This document proposes a new method for constructing sets of ternary zero correlation zone (ZCZ) sequences. The construction is based on binary mutually orthogonal complementary sets (MOCS). It involves three steps: 1) Generating a MOCS matrix, 2) Constructing an initial sequence set from the MOCS by concatenation and interleaving, 3) Recursively generating new sequence sets from the initial set by further interleaving. Examples are provided. The properties of the proposed ZCZ sequence sets are shown to achieve the theoretical upper bound, making them almost optimal ZCZ sequence sets.
This document provides information about an optimization problem. It defines a set function v over subsets of a ground set N, and a constraint set C(v) consisting of vectors x satisfying certain conditions defined in terms of v. It then formulates the optimization problem of minimizing the maximum imbalance e(S,x) over all S subsets of N and x in C(v). It provides an example instance of the problem with N={1,2,3} and defines v on subsets. It then derives properties of the optimal solution for this example instance.
The document defines a model for coalition formation with three players (1, 2, 3). It specifies the values of different coalitions and defines the feasible set and payoff functions. It then calculates the payoff functions sij(x) for each pair of players i,j in terms of the values of the different coalitions and the feasible set constraints.
The document defines an ordering โซ on the set A(v) based on the values of ฮธ1(x), ฮธ2(x),...,ฮธ2n-4(x). For any x,y in A(v), x โซ y if and only if there exists 1 โค k โค 2n-4 such that ฮธl(x) = ฮธl(y) for l = 1,...,k-1 and ฮธk(x) < ฮธk(y). It also defines the sets C(v) and properties of the functions v(S) and ฮธl(x).
This document discusses game theory and bargaining sets. It begins by reviewing the definitions of objections and counter-objections in bargaining situations. It then proves that the bargaining set of a game is always non-empty using the relationship between the bargaining set and the core. As an example, it calculates the core and examines different allocations to determine which belong to the bargaining set for a specific characteristic function game.
This document contains a chapter on preliminaries from a mathematics textbook. It reviews concepts like rational numbers, dense sets, and theorems. It then presents a problem set with 14 problems involving algebraic expressions and equations. The problems cover topics like combining like terms, distributing, factoring, and solving quadratic equations.
1. The document provides examples and concepts related to limits, including definitions, evaluating limits of various functions as the variable approaches a number, and evaluating one-sided and two-sided limits.
2. Worked examples evaluate limits of rational functions, radical functions, and trigonometric functions as the variable approaches numbers or infinity.
3. Key concepts such as left-hand and right-hand limits, and limits at infinity, are demonstrated through multiple examples.
Vector Calculus and Linear Algebra (2110015) covers topics in inner products including the Cauchy-Schwarz inequality, orthogonal vectors, the Pythagorean theorem, orthogonal projections, the Gram-Schmidt process, and least squares solutions. The document provides examples and explanations of these concepts, such as finding the orthogonal projection of a vector onto a subspace and using the normal equations to solve the least squares problem for an inconsistent system of linear equations.
This document provides examples of calculating area under curves using the integral. It contains 19 practice problems that involve slicing areas vertically or horizontally and integrating to find the area. The key steps are to identify intersection points, set up integrals using appropriate bounds, and evaluate the integrals to obtain area estimates.
This document provides information about an optimization problem. It defines a set function v over subsets of a ground set N, and a constraint set C(v) consisting of vectors x satisfying certain conditions defined in terms of v. It then formulates the optimization problem of minimizing the maximum imbalance e(S,x) over all S subsets of N and x in C(v). It provides an example instance of the problem with N={1,2,3} and defines v on subsets. It then derives properties of the optimal solution for this example instance.
The document defines a model for coalition formation with three players (1, 2, 3). It specifies the values of different coalitions and defines the feasible set and payoff functions. It then calculates the payoff functions sij(x) for each pair of players i,j in terms of the values of the different coalitions and the feasible set constraints.
The document defines an ordering โซ on the set A(v) based on the values of ฮธ1(x), ฮธ2(x),...,ฮธ2n-4(x). For any x,y in A(v), x โซ y if and only if there exists 1 โค k โค 2n-4 such that ฮธl(x) = ฮธl(y) for l = 1,...,k-1 and ฮธk(x) < ฮธk(y). It also defines the sets C(v) and properties of the functions v(S) and ฮธl(x).
This document discusses game theory and bargaining sets. It begins by reviewing the definitions of objections and counter-objections in bargaining situations. It then proves that the bargaining set of a game is always non-empty using the relationship between the bargaining set and the core. As an example, it calculates the core and examines different allocations to determine which belong to the bargaining set for a specific characteristic function game.
This document contains a chapter on preliminaries from a mathematics textbook. It reviews concepts like rational numbers, dense sets, and theorems. It then presents a problem set with 14 problems involving algebraic expressions and equations. The problems cover topics like combining like terms, distributing, factoring, and solving quadratic equations.
1. The document provides examples and concepts related to limits, including definitions, evaluating limits of various functions as the variable approaches a number, and evaluating one-sided and two-sided limits.
2. Worked examples evaluate limits of rational functions, radical functions, and trigonometric functions as the variable approaches numbers or infinity.
3. Key concepts such as left-hand and right-hand limits, and limits at infinity, are demonstrated through multiple examples.
Vector Calculus and Linear Algebra (2110015) covers topics in inner products including the Cauchy-Schwarz inequality, orthogonal vectors, the Pythagorean theorem, orthogonal projections, the Gram-Schmidt process, and least squares solutions. The document provides examples and explanations of these concepts, such as finding the orthogonal projection of a vector onto a subspace and using the normal equations to solve the least squares problem for an inconsistent system of linear equations.
This document provides examples of calculating area under curves using the integral. It contains 19 practice problems that involve slicing areas vertically or horizontally and integrating to find the area. The key steps are to identify intersection points, set up integrals using appropriate bounds, and evaluate the integrals to obtain area estimates.
1. This document provides examples and problems related to concepts involving the definite integral.
2. There are 30 problems involving calculations of definite integrals, summations, and other concepts related to the definite integral.
3. The problems progress from simpler calculations and concepts to more complex examples involving multiple steps and terms in the integrals and summations.
1. This document provides a review of concepts and sample problems related to multiple integrals. It covers topics such as iterated integrals, changing the order of integration, and evaluating double integrals over various regions.
2. The problem set contains 14 problems evaluating double integrals over different regions using techniques like iterated integration and changing the order of integration.
3. Multiple integrals are used to find volumes, masses, moments, and other physical quantities over regions in 2D and 3D space. The document demonstrates how to set up and evaluate multiple integrals to solve applied problems.
The document provides solutions to physics problems for chapter 4 of mathematics 2. It includes solutions for determining derivatives and differentials of various functions with respect to variables like x, y, r, and ฮธ. The highest level of mathematics involved includes taking second order derivatives and solving simultaneous equations. Sample problems include determining derivatives of functions that define relationships between polar and Cartesian coordinates.
This document provides examples and solutions to problems involving indeterminate forms and improper integrals. It covers various limits that are of the form 0/0 or โ/โ and how to evaluate them using techniques like L'Hopital's rule. Some example limits are evaluated directly, while others require applying L'Hopital's rule multiple times. The document also contains problems evaluating definite integrals that result in indeterminate forms, along with their solutions.
This document provides examples and solutions for differential equations. It begins with concepts like general solutions involving complex conjugate roots. It then provides worked problems finding general and particular solutions of differential equations with various roots. It discusses repeated roots, finding constants from initial conditions, and complex conjugate roots. It also covers nonhomogeneous and nonlinear differential equations, and using an exponential substitution to solve a differential equation.
This document provides solutions to 40 problems involving techniques of integration. The problems cover a variety of integration techniques including substitution, integration by parts, and trigonometric substitutions. The solutions show the setup and evaluation of each integral, with many resulting in expressions involving common functions such as logarithms, inverse trigonometric functions, and hyperbolic functions.
1. The document discusses concepts related to derivatives including tangent lines, secant lines, and average velocity. It provides examples of calculating the slope of various functions at given points.
2. Formulas are given for calculating the instantaneous rate of change and average rate of change for functions related to distance, velocity, and other variables with respect to time.
3. Examples are worked through for finding the instantaneous rates of change for various functions at given points to determine when the rates are positive, negative, or zero.
The document discusses Fourier series and periodic functions. It provides:
- Definitions of Fourier series and periodic functions.
- Examples of periodic functions including trigonometric and other functions.
- Euler's formulae for calculating the coefficients of a Fourier series.
- Integration properties used to solve Fourier series problems.
- Two examples of determining the Fourier series for given periodic functions and using it to deduce mathematical results.
This document presents the solution to quadruple Fourier series equations involving heat polynomials. Quadruple series equations are useful for solving four-part boundary value problems in fields like electrostatics and elasticity. The document considers two sets of quadruple series equations, the first kind and second kind, involving heat polynomials of the first and second kind. The solutions are obtained by reducing the problems to simultaneous Fredholm integral equations of the second kind. The specific equations considered and the steps to solve them using operator theory are presented.
The document describes a recursive process for assigning values to x variables indexed from 1 to m. For each even index k, xk is defined as a polynomial in ฮด with decreasing powers and alternating signs. For each odd index k, xk is defined as the same polynomial but with the signs flipped. It is shown that as m approaches infinity and ฮด approaches 1, the pair of values (x1, x2) approach the point (1/2, 1/2).
IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) is an open access international journal that provides rapid publication (within a month) of articles in all areas of electronics and communication engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electronics and communication engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
This document contains problems related to Boolean algebra and logic gates. It asks the reader to:
- Convert between binary, decimal, hexadecimal, and octal number systems
- Derive truth tables for logic gates and Boolean functions
- Use Boolean algebra to simplify and prove equivalences between Boolean functions
- Express Boolean functions in sum of products and product of sums form
- Write Boolean functions in canonical form using minterms and maxterms
1. The document defines various functions and relations using set-builder and function notation.
2. Examples of linear, quadratic, and polynomial functions are provided with their domain and range restrictions.
3. Common transformations of basic quadratic functions like y=x^2 are demonstrated, such as shifting the graph left or right and changing the sign of coefficients.
1. The document contains an assignment on mathematics involving ordinary and partial differential equations, matrices, vector calculus, and their applications. It includes solving various types of differential equations, finding eigenvectors and eigenvalues of matrices, evaluating line, surface and volume integrals using Green's theorem and Stokes' theorem. The assignment contains 20 problems spanning these topics.
2. The assignment covers key concepts in differential equations, linear algebra, and vector calculus including solving ordinary differential equations, partial differential equations, systems of linear equations, eigenproblems, line integrals, surface integrals, divergence, curl, gradient, Laplacian, and theorems like Green's theorem and Stokes' theorem.
3. Students are required to solve 20 problems involving these
The document appears to discuss Bayesian statistical modeling and inference. It includes definitions of terms like the correlation coefficient (ฯ), bivariate normal distributions, and binomial distributions. It shows the setup of a Bayesian hierarchical model with multivariate normal outcomes and estimates of the model parameters, including the correlations (ฯA and ฯB) between two groups of bivariate data.
This document presents three theorems that further generalize previous results on the distribution of zeros of polynomials. Theorem 1 states that if the coefficients of a polynomial satisfy certain monotonicity conditions involving parameters ฮป, ฯ, and ฮผ, then the zeros of the polynomial lie within defined disks. Theorem 2 makes a similar statement about the zeros, but applies the conditions to the imaginary coefficients rather than the real coefficients. Theorem 3 gives disk regions containing the zeros when the coefficients satisfy different monotonicity conditions and the arguments of the coefficients are bounded. The theorems reduce to previous results as special cases when certain parameters are set to 1.
1) The document presents a wavelet collocation method for numerically solving nth order Volterra integro-differential equations. It expands the unknown function as a series of Chebyshev wavelets of the second kind with unknown coefficients.
2) It states and proves a uniform convergence theorem that establishes the convergence of approximating the solution using truncated Chebyshev wavelet series expansions.
3) The paper demonstrates the validity and applicability of the proposed method through some illustrative examples of solving integro-differential equations using the Chebyshev wavelet collocation approach.
The document discusses inner product spaces and orthonormal bases. It defines an inner product space as a vector space with an inner product defined on it. An orthonormal basis is introduced as a set of orthogonal unit vectors that form a basis. The Gram-Schmidt process is presented as a method for transforming a basis into an orthonormal basis. Properties of inner products, such as the Cauchy-Schwarz inequality and orthogonal projections, are covered.
This document contains an exercise set with 46 problems involving real numbers, intervals, and inequalities. The problems cover topics such as determining whether numbers are rational or irrational, solving equations, graphing inequalities on number lines, factoring polynomials, and solving compound inequalities.
1. The document provides 14 problems involving partial differential equations (PDEs). The problems involve forming PDEs by eliminating arbitrary constants from functions, finding complete integrals, and solving PDEs.
2. Methods used include taking partial derivatives, finding auxiliary equations, and making substitutions to isolate the PDE or solve it.
3. The document covers a range of techniques for working with PDEs, including eliminating constants, finding trial solutions, integrating subsidiary equations, and solving auxiliary equations to find complete integrals.
This document proposes a variation of the StriFA pattern matching technique for intrusion detection. StriFA converts input streams into shorter integer streams to accelerate matching. The variation layers StriFA in a four-step process. First, a dataset is preprocessed by mapping symbolic attributes to integers. Then it is split into four subsets, each containing normal and attack records. Feature values are extracted and stored as integer strings. These strings are used to train a layered StriFA architecture to detect 22 attack types mixed with normal data. Performance is evaluated against other algorithms, finding this variation achieves the highest accuracy with the lowest error rate.
The document discusses vulnerabilities in the Border Gateway Protocol (BGP) and proposes solutions to secure BGP. It begins by providing an overview of BGP, describing how it exchanges routing information but lacks security mechanisms. This makes it vulnerable to attacks like prefix hijacking. The document then proposes using X.509 certificates to authenticate BGP speakers and their address spaces. It also suggests applying IPsec to secure communications. The proposed solution authenticates BGP speakers by verifying certificates before establishing sessions, aiming to overcome BGP vulnerabilities with low computational cost.
1. This document provides examples and problems related to concepts involving the definite integral.
2. There are 30 problems involving calculations of definite integrals, summations, and other concepts related to the definite integral.
3. The problems progress from simpler calculations and concepts to more complex examples involving multiple steps and terms in the integrals and summations.
1. This document provides a review of concepts and sample problems related to multiple integrals. It covers topics such as iterated integrals, changing the order of integration, and evaluating double integrals over various regions.
2. The problem set contains 14 problems evaluating double integrals over different regions using techniques like iterated integration and changing the order of integration.
3. Multiple integrals are used to find volumes, masses, moments, and other physical quantities over regions in 2D and 3D space. The document demonstrates how to set up and evaluate multiple integrals to solve applied problems.
The document provides solutions to physics problems for chapter 4 of mathematics 2. It includes solutions for determining derivatives and differentials of various functions with respect to variables like x, y, r, and ฮธ. The highest level of mathematics involved includes taking second order derivatives and solving simultaneous equations. Sample problems include determining derivatives of functions that define relationships between polar and Cartesian coordinates.
This document provides examples and solutions to problems involving indeterminate forms and improper integrals. It covers various limits that are of the form 0/0 or โ/โ and how to evaluate them using techniques like L'Hopital's rule. Some example limits are evaluated directly, while others require applying L'Hopital's rule multiple times. The document also contains problems evaluating definite integrals that result in indeterminate forms, along with their solutions.
This document provides examples and solutions for differential equations. It begins with concepts like general solutions involving complex conjugate roots. It then provides worked problems finding general and particular solutions of differential equations with various roots. It discusses repeated roots, finding constants from initial conditions, and complex conjugate roots. It also covers nonhomogeneous and nonlinear differential equations, and using an exponential substitution to solve a differential equation.
This document provides solutions to 40 problems involving techniques of integration. The problems cover a variety of integration techniques including substitution, integration by parts, and trigonometric substitutions. The solutions show the setup and evaluation of each integral, with many resulting in expressions involving common functions such as logarithms, inverse trigonometric functions, and hyperbolic functions.
1. The document discusses concepts related to derivatives including tangent lines, secant lines, and average velocity. It provides examples of calculating the slope of various functions at given points.
2. Formulas are given for calculating the instantaneous rate of change and average rate of change for functions related to distance, velocity, and other variables with respect to time.
3. Examples are worked through for finding the instantaneous rates of change for various functions at given points to determine when the rates are positive, negative, or zero.
The document discusses Fourier series and periodic functions. It provides:
- Definitions of Fourier series and periodic functions.
- Examples of periodic functions including trigonometric and other functions.
- Euler's formulae for calculating the coefficients of a Fourier series.
- Integration properties used to solve Fourier series problems.
- Two examples of determining the Fourier series for given periodic functions and using it to deduce mathematical results.
This document presents the solution to quadruple Fourier series equations involving heat polynomials. Quadruple series equations are useful for solving four-part boundary value problems in fields like electrostatics and elasticity. The document considers two sets of quadruple series equations, the first kind and second kind, involving heat polynomials of the first and second kind. The solutions are obtained by reducing the problems to simultaneous Fredholm integral equations of the second kind. The specific equations considered and the steps to solve them using operator theory are presented.
The document describes a recursive process for assigning values to x variables indexed from 1 to m. For each even index k, xk is defined as a polynomial in ฮด with decreasing powers and alternating signs. For each odd index k, xk is defined as the same polynomial but with the signs flipped. It is shown that as m approaches infinity and ฮด approaches 1, the pair of values (x1, x2) approach the point (1/2, 1/2).
IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) is an open access international journal that provides rapid publication (within a month) of articles in all areas of electronics and communication engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electronics and communication engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
This document contains problems related to Boolean algebra and logic gates. It asks the reader to:
- Convert between binary, decimal, hexadecimal, and octal number systems
- Derive truth tables for logic gates and Boolean functions
- Use Boolean algebra to simplify and prove equivalences between Boolean functions
- Express Boolean functions in sum of products and product of sums form
- Write Boolean functions in canonical form using minterms and maxterms
1. The document defines various functions and relations using set-builder and function notation.
2. Examples of linear, quadratic, and polynomial functions are provided with their domain and range restrictions.
3. Common transformations of basic quadratic functions like y=x^2 are demonstrated, such as shifting the graph left or right and changing the sign of coefficients.
1. The document contains an assignment on mathematics involving ordinary and partial differential equations, matrices, vector calculus, and their applications. It includes solving various types of differential equations, finding eigenvectors and eigenvalues of matrices, evaluating line, surface and volume integrals using Green's theorem and Stokes' theorem. The assignment contains 20 problems spanning these topics.
2. The assignment covers key concepts in differential equations, linear algebra, and vector calculus including solving ordinary differential equations, partial differential equations, systems of linear equations, eigenproblems, line integrals, surface integrals, divergence, curl, gradient, Laplacian, and theorems like Green's theorem and Stokes' theorem.
3. Students are required to solve 20 problems involving these
The document appears to discuss Bayesian statistical modeling and inference. It includes definitions of terms like the correlation coefficient (ฯ), bivariate normal distributions, and binomial distributions. It shows the setup of a Bayesian hierarchical model with multivariate normal outcomes and estimates of the model parameters, including the correlations (ฯA and ฯB) between two groups of bivariate data.
This document presents three theorems that further generalize previous results on the distribution of zeros of polynomials. Theorem 1 states that if the coefficients of a polynomial satisfy certain monotonicity conditions involving parameters ฮป, ฯ, and ฮผ, then the zeros of the polynomial lie within defined disks. Theorem 2 makes a similar statement about the zeros, but applies the conditions to the imaginary coefficients rather than the real coefficients. Theorem 3 gives disk regions containing the zeros when the coefficients satisfy different monotonicity conditions and the arguments of the coefficients are bounded. The theorems reduce to previous results as special cases when certain parameters are set to 1.
1) The document presents a wavelet collocation method for numerically solving nth order Volterra integro-differential equations. It expands the unknown function as a series of Chebyshev wavelets of the second kind with unknown coefficients.
2) It states and proves a uniform convergence theorem that establishes the convergence of approximating the solution using truncated Chebyshev wavelet series expansions.
3) The paper demonstrates the validity and applicability of the proposed method through some illustrative examples of solving integro-differential equations using the Chebyshev wavelet collocation approach.
The document discusses inner product spaces and orthonormal bases. It defines an inner product space as a vector space with an inner product defined on it. An orthonormal basis is introduced as a set of orthogonal unit vectors that form a basis. The Gram-Schmidt process is presented as a method for transforming a basis into an orthonormal basis. Properties of inner products, such as the Cauchy-Schwarz inequality and orthogonal projections, are covered.
This document contains an exercise set with 46 problems involving real numbers, intervals, and inequalities. The problems cover topics such as determining whether numbers are rational or irrational, solving equations, graphing inequalities on number lines, factoring polynomials, and solving compound inequalities.
1. The document provides 14 problems involving partial differential equations (PDEs). The problems involve forming PDEs by eliminating arbitrary constants from functions, finding complete integrals, and solving PDEs.
2. Methods used include taking partial derivatives, finding auxiliary equations, and making substitutions to isolate the PDE or solve it.
3. The document covers a range of techniques for working with PDEs, including eliminating constants, finding trial solutions, integrating subsidiary equations, and solving auxiliary equations to find complete integrals.
This document proposes a variation of the StriFA pattern matching technique for intrusion detection. StriFA converts input streams into shorter integer streams to accelerate matching. The variation layers StriFA in a four-step process. First, a dataset is preprocessed by mapping symbolic attributes to integers. Then it is split into four subsets, each containing normal and attack records. Feature values are extracted and stored as integer strings. These strings are used to train a layered StriFA architecture to detect 22 attack types mixed with normal data. Performance is evaluated against other algorithms, finding this variation achieves the highest accuracy with the lowest error rate.
The document discusses vulnerabilities in the Border Gateway Protocol (BGP) and proposes solutions to secure BGP. It begins by providing an overview of BGP, describing how it exchanges routing information but lacks security mechanisms. This makes it vulnerable to attacks like prefix hijacking. The document then proposes using X.509 certificates to authenticate BGP speakers and their address spaces. It also suggests applying IPsec to secure communications. The proposed solution authenticates BGP speakers by verifying certificates before establishing sessions, aiming to overcome BGP vulnerabilities with low computational cost.
This document describes the development of a mini unmanned aerial vehicle (UAV) by students. Key points:
1. Students developed a prototype mini UAV using sensors, a small camera, ZigBee, and a microcontroller. This could be useful for applications like disaster response, weather monitoring, and surveys.
2. The document evaluates parameters like lift, drag, centrifugal force, endurance, and altitude that were achieved with the prototype. Temperature, humidity, and CO2 readings were also obtained using sensors.
3. Potential applications of the mini UAV include aerial photography, surveying, disaster monitoring, carrying small payloads, military, and detecting forest fires. The conclusion is that
1. The document proposes using magnetic lifts to safely evacuate people from high-rise buildings during fires.
2. It suggests installing ferro-magnetic lifts on the top floors that can drop and be slowed under controlled magnetic fields, reducing evacuation time by 75% and saving a similar number of additional lives.
3. The system would use a solenoid made of current-carrying wire wound around the bottom of the lift shaft to generate a magnetic field strong enough to gently stop a falling lift, keeping deceleration below safe limits.
This document describes a proposed method to improve image classification accuracy and speed using the bag-of-features model with spatial pooling. The proposed method has two phases: a training phase to create an image feature database, and an evaluation phase to classify new images. In the evaluation phase, spatial pooling is applied to input image features before classification with KNN. Variance-based feature selection is also used to reduce features before KNN classification. Experimental results show the proposed method improves classification accuracy up to 5% and reduces classification time by up to 50% compared to the standard bag-of-features model.
This document provides a review of engineered composite materials that use natural fibers as reinforcement. It discusses the classification and properties of different types of composites, including polymer matrix composites, metal matrix composites, ceramic matrix composites, and bio-matrix composites. The document also reviews the use of natural fibers as an alternative reinforcement to glass fibers in fiber reinforced polymer composites due to their low cost, good mechanical properties, renewability, and biodegradability. However, natural fiber composites have shortfalls related to the hydrophilic nature of the fibers and their incompatibility with hydrophobic polymer matrices. Engineering approaches aim to overcome these issues to improve the performance of natural fiber reinforced polymer composites.
This document proposes a new shape-adaptive reversible integer lapped transform (SA-RLT) method for region-of-interest (ROI) coding of 2D remote sensing images. SA-RLT performs better than other transforms like SA-DWT and SA-DCT. The method segments the ROI using a new algorithm rather than hand segmentation. It then designs a SA-RLT based ROI compression scheme using object-based set partitioned embedded block coding (OBSPECK). Experimental results show that SA-RLT compression outperforms DCT and DWT compression for remote sensing images. The method provides flexible bit rate control and allows lossless ROI coding without background areas.
Quantum communication and quantum computingIOSR Journals
ย
Abstract: The subject of quantum computing brings together ideas from classical information theory, computer
science, and quantum physics. This review aims to summarize not just quantum computing, but the whole
subject of quantum information theory. Information can be identified as the most general thing which must
propagate from a cause to an effect. It therefore has a fundamentally important role in the science of physics.
However, the mathematical treatment of information, especially information processing, is quite recent, dating
from the mid-20th century. This has meant that the full significance of information as a basic concept in physics
is only now being discovered. This is especially true in quantum mechanics. The theory of quantum information
and computing puts this significance on a firm footing, and has led to some profound and exciting new insights
into the natural world. Among these are the use of quantum states to permit the secure transmission of classical
information (quantum cryptography), the use of quantum entanglement to permit reliable transmission of
quantum states (teleportation), the possibility of preserving quantum coherence in the presence of irreversible
noise processes (quantum error correction), and the use of controlled quantum evolution for efficient
computation (quantum computation). The common theme of all these insights is the use of quantum
entanglement as a computational resource.
Keywords: quantum bits, quantum registers, quantum gates and quantum networks
1) The document discusses various ways that artificial intelligence can be applied to different phases of the software engineering lifecycle, including requirements specification, design, coding, testing, and estimation.
2) It provides examples of using techniques like natural language processing to clarify requirements, knowledge graphs to manage requirements information, and computational intelligence for requirements prioritization.
3) For design, the document discusses using intelligent agents to recommend patterns and designs to satisfy quality attributes from requirements and assist with assigning responsibilities to components.
This document describes an evaluation of natural draft wet cooling tower (NDWCT) performance using different packing fills in Iraq via artificial neural networks (ANN). Experimental tests were conducted on a NDWCT rig using honeycomb, splash, and trickle fills under varying conditions. An ANN with 10 hidden neurons was developed using the Levenberg-Marquardt backpropagation algorithm in MATLAB to predict the experimental results. The ANN predictions showed good agreement with the experiments based on correlation coefficients above 0.994, low root mean square errors below 6%, and mean relative errors below 8.4%.
This document proposes a reversible non-blind video watermarking technique based on interlacing using 3-level discrete wavelet transform (DWT) and alpha blending. The technique selects frames from a video, decomposes them using 3-level DWT, and embeds the watermark into the low frequency sub-band of original frames using alpha blending. Additionally, the Arnold transform is used as an encryption method before embedding for added security. The results of this technique are then analyzed and compared to other techniques. The technique aims to address the issues of non-blind watermarking requiring the original data for extraction and double bandwidth requirements.
This document analyzes the reliability of the 11kV and 33kV distribution feeders of the Idi-Araba injection substation in Mushin, Lagos over a 5-year period from 2007-2011. Key reliability metrics like failure rate, mean time between failures, mean time to repair, availability and reliability were calculated for each feeder using failure and downtime data collected from the substation. The results showed that the 2011 electricity supply was the most reliable for the 11kV feeders, while the 33kV feeder showed maximum reliability in 2007. Overall, the 11kV feeders had 63.61% reliability and the 33kV feeders had 93.39% reliability over the 5
This document describes the development of an automatic single-axis solar tracking system using a servo motor mechanism. The system includes light dependent resistors (LDRs) to sense sunlight intensity, a microcontroller to send signals to the servo motor, and a mechanical structure to support the photovoltaic panel. The controller coding and servo mechanism were first simulated using PROTEUS 7 software. Then a prototype was developed including the mechanical design, active control components like the LDRs, microcontroller and servo motor, and a power system. Testing showed the tracking system improved average efficiency by 7.67% compared to a fixed panel.
This document discusses speed control of a DC motor using a chopper (buck converter) and PI controller. A buck converter is used to vary the armature voltage of the separately excited DC motor, allowing control of motor speed. A PI controller is employed to remove delay and provide fast control by minimizing the error between the reference speed and actual motor speed measured by a tachogenerator. The complete system including DC motor, buck converter and PI controller is modeled in MATLAB/Simulink. Simulation results for motor parameters like speed, current and torque are analyzed to verify the speed control methodology.
This document provides a review of previous research on thermoelectric generators. It begins with an introduction to solar energy and thermoelectric generation technologies. It then discusses the basic components of a thermoelectric module, including the thermocouple. The document reviews three previous works: 1) fabrication and testing of flat plate solar thermoelectric generators for near-earth orbits, which achieved power outputs of 3-3.3 watts; 2) development of a high efficiency thermoelectric power generator using bismuth telluride that achieved a maximum efficiency of 1.85%; 3) parametric analysis and modeling of a solar heat pipe thermoelectric generator unit comprising a thermoelectric module, finned heat pipe,
This document provides a review of optimization techniques for the wire electrical discharge machining (WEDM) process. It begins with an introduction to WEDM, describing the working principle and important process parameters like pulse width, time between pulses, servo reference voltage, and wire tension. The document then reviews literature on optimization methods that have been used to maximize material removal rate while minimizing electrode wear rate. Specifically, it discusses two studies that used Taguchi's design of experiments approach and desirability functions to optimize cutting conditions for different materials like minimizing wear rate and maximizing material removal rate in WEDM.
An Investigation of Practicing Carrollโs Pyramid of Corporate Social Responsi...IOSR Journals
ย
This study has been conducted to explore the present scenario of implementing corporate social responsibility in our garment industry by using Carrollโs (1991) pyramid. Garments sector is one of the most important sectors of industries in our country. Practicing CSR in this industry is very much necessary. This paper aims to investigate that what level of CSR activities are practiced by our garment industry. This study also identifies to what extend Carrollโs (1991) pyramid is understood by the corporate body of our garment industry. In this regard, we take interviews of 50 garments workers and top executives from the areas of Savar, Gazipur, Ashulia and Tongi. At the end of the study, we explore the implications of these findings and suggest actions to practice CSR properly in the Bangladesh garment industry.
This document provides an overview of concept drift, which refers to changes in the underlying patterns or distributions of data over time. The main types of concept drift are discussed, including changes in class probabilities, class-conditional probabilities, and posterior probabilities. Several techniques for detecting concept drift are also summarized, such as the Drift Detection Method (DDM) and its modification EDDM, the ADWIN method using variable-sized windows, paired learners using stable and reactive models, and the ECDD method based on exponentially weighted moving averages. The document reviews these concept drift detection algorithms and their applications for adapting models to changing data streams.
This document compares the Perturb and Observe (P&O) and fuzzy logic controller (FLC) maximum power point tracking (MPPT) techniques for photovoltaic (PV) systems. It introduces PV cell modeling and characteristics, and discusses various MPPT techniques including P&O, incremental conductance method, and fuzzy logic control. The document aims to design an FLC-based MPPT controller and compare its performance to P&O control in tracking the maximum power point under changing environmental conditions for improved PV system efficiency.
This document discusses estimating hand muscle power using surface electromyography (EMG). EMG is used to evaluate electrical activity in muscles during activities to grade muscle strength. The research aims to develop an automatic method for grading muscle power. EMG is acquired from hand muscles during different activities and analyzed. Analysis includes root mean square, maximum amplitude, and burst time of EMG signals. Results from fifty young subjects show these metrics increase with greater muscle contraction and resistance, allowing muscle strength grading. The method could improve on manual muscle testing which depends on examiner judgment.
The document provides solutions to recommended problems from a signals and systems textbook. It solves problems related to signal properties such as periodicity, even and odd signals, transformations of signals, and convolutions. Key steps and reasoning are shown for each part of each problem. Graphs and diagrams are included to illustrate signals and solutions.
The document discusses systems of two variable equations and inequalities. It defines a system of two variable equations as a collection of two or more equations involving two variables (linear-linear, linear-quadratic, quadratic-quadratic) whose solutions are points satisfying the equations. The solution graph is the intersection of the equations. It also defines systems of two variable inequalities and explains how to graphically represent the solution sets. Examples of solving systems using graphical and substitution methods are provided.
Further Results On The Basis Of Cauchyโs Proper Bound for the Zeros of Entire...IJMER
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International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessmentโฆ. And many more.
1. The document contains the name, student ID, class, and week of a student completing circuit analysis homework.
2. It analyzes three circuits to find impedances and current values. Circuit equivalents are drawn using Laplace transforms.
3. Expressions for the currents i1(t) and i2(t) are derived. As t becomes sufficiently large, i1(t) equals 10/8 and i2(t) equals 0.
The document summarizes properties of 3x3 magic squares and shows that they form a vector space. Specifically:
- A 3x3 magic square is a matrix where each row, column and diagonal sum to the same number.
- It shows that if a 3x3 matrix A is a magic square, then A3 and A-1 (if it exists) are also magic squares.
- It proves that the set of all 3x3 magic squares satisfies the seven properties to be a vector space, including vector addition and scalar multiplication.
This document contains calculations and equations related to diode circuits. It defines terms like reverse saturation current (IS), thermal voltage (VT), and determines values like junction voltage (VZ) and terminal voltages (VS) for various diode circuits. Key results include:
- The terminal voltage VS is equal to the junction voltage VZ when the applied voltage VE is less than VZ.
- When VE is greater than VZ, VS takes on a value between 0V and VE depending on the resistor ratios.
- For a circuit with VE = 25V, VZ = 12V, and resistor values of 2kฮฉ and 1.2kฮฉ, the calculated terminal voltage is VS = 15.
The document discusses applications of vector spaces and subspaces in telecommunications engineering. It provides examples of how vector spaces are used in areas like electromagnetic wave transmission, wired and wireless data transmission, and color image coding. Vector spaces allow modeling of physical phenomena like electric and magnetic field vectors. Color spaces also represent vector spaces used in television systems. Matrix transformations are used to relate different color spaces like RGB and YCbCr. The document concludes that linear algebra provides engineers powerful mathematical tools for solving problems across telecommunications.
1) The document describes a fractional order nonlinear quarter car suspension model. It establishes integer and fractional order differential equations to model the system.
2) Key parameters of the suspension system are defined including mass, stiffness coefficients, and hysteretic nonlinear damping forces. State space and discrete forms of the fractional order model are presented.
3) Numerical methods for solving the fractional order differential equations are discussed, including the Adams-Bashforth-Moulton algorithm used to analyze the quarter car model. Stability of equilibrium points is analyzed.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
The document discusses convolution, which is a mathematical operation used to describe the output of a linear time-invariant system when its input is another function. Convolution combines two sequences to produce a third sequence. It has properties like commutativity and associativity. To perform a convolution, the sequences can be directly evaluated as a summation, plotted graphically and multiplied/summed, or calculated using a slide rule method by shifting and multiplying corresponding terms.
The document defines the trapezoidal rule for approximating definite integrals. It provides the trapezoidal formula, explains the geometric interpretation of dividing the region into trapezoids, and outlines an algorithm and flowchart for implementing the trapezoidal rule in Python. Sample problems applying the trapezoidal rule are included to evaluate definite integrals numerically.
This document discusses different interpolation methods:
- Interpolation finds values of a function between known x-values where the function values are given.
- Newton's forward and backward interpolation formulas are presented along with examples.
- Newton's divided difference interpolation uses a formula involving differences to find interpolating polynomials.
- Langrange's interpolation formula expresses the interpolating polynomial as a linear combination of basis polynomials defined in terms of the x-values. An example computing an interpolated value is shown.
Some properties of two-fuzzy Nor med spacesIOSR Journals
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The study sheds light on the two-fuzzy normed space concentrating on some of their properties like convergence, continuity and the in order to study the relationship between these spaces
This document describes hysteretic mechanical systems and materials using a generalized force-displacement model. It presents the analytical formulation of the model, including expressions for the generalized force and tangent stiffness during loading and unloading. It defines the model parameters and describes four possible hysteresis loop shapes (S1-S4) depending on the parameter values. Examples of each shape type are given through simulated hysteresis loops. The implementation algorithm is also outlined.
En el presente trabajo encontraremos conceptos bรกsicos sobre nรบmeros reales al igual que ejemplos. Tambiรฉn conceptos sobre inecuaciones y desigualdades y sus ejercicios, operaciones con conjuntos
The aim of this paper is to study the existence and approximation of periodic solutions for non-linear systems of integral equations, by using the numerical-analytic method which were introduced by Samoilenko[ 10, 11]. The study of such nonlinear integral equations is more general and leads us to improve and extend the results of Butris [2].
The document discusses linear combinations and linear independence of vectors and functions. It defines a linear combination of vectors as a vector that can be expressed as a sum of scalar multiples of other vectors. A set of vectors is linearly dependent if one vector can be written as a linear combination of the others. A set is linearly independent if the only solution to the equation involving scalar multiples of the vectors is when all scalars are zero. It also discusses the Wronskian and its use in determining linear independence of functions. Examples are provided to illustrate these concepts.
The document discusses linear transformations. It provides examples of determining if functions define linear transformations by checking if they satisfy the property that T(ฮฑu + ฮฒv) = ฮฑT(u) + ฮฒT(v). It then gives an example of using a system of equations to determine the output of a linear transformation T for a given input, when the outputs of T for two other example inputs are given.
The document presents information about submodular functions including:
1) It defines a submodular function v as a set function whose domain is the power set of a ground set N, and discusses properties of submodular functions.
2) It provides an example of a submodular function v with ground set N={1,2,3} and defines the polyhedron and base polyhedron associated with v.
3) It introduces the concept of a greedy algorithm for maximizing a submodular set function and outlines the steps of the greedy algorithm.
This document provides a technical review of secure banking using RSA and AES encryption methodologies. It discusses how RSA and AES are commonly used encryption standards for secure data transmission between ATMs and bank servers. The document first provides background on ATM security measures and risks of attacks. It then reviews related work analyzing encryption techniques. The document proposes using a one-time password in addition to a PIN for ATM authentication. It concludes that implementing encryption standards like RSA and AES can make transactions more secure and build trust in online banking.
This document analyzes the performance of various modulation schemes for achieving energy efficient communication over fading channels in wireless sensor networks. It finds that for long transmission distances, low-order modulations like BPSK are optimal due to their lower SNR requirements. However, as transmission distance decreases, higher-order modulations like 16-QAM and 64-QAM become more optimal since they can transmit more bits per symbol, outweighing their higher SNR needs. Simulations show lifetime extensions up to 550% are possible in short-range networks by using higher-order modulations instead of just BPSK. The optimal modulation depends on transmission distance and balancing the energy used by electronic components versus power amplifiers.
This document provides a review of mobility management techniques in vehicular ad hoc networks (VANETs). It discusses three modes of communication in VANETs: vehicle-to-infrastructure (V2I), vehicle-to-vehicle (V2V), and hybrid vehicle (HV) communication. For each communication mode, different mobility management schemes are required due to their unique characteristics. The document also discusses mobility management challenges in VANETs and outlines some open research issues in improving mobility management for seamless communication in these dynamic networks.
This document provides a review of different techniques for segmenting brain MRI images to detect tumors. It compares the K-means and Fuzzy C-means clustering algorithms. K-means is an exclusive clustering algorithm that groups data points into distinct clusters, while Fuzzy C-means is an overlapping clustering algorithm that allows data points to belong to multiple clusters. The document finds that Fuzzy C-means requires more time for brain tumor detection compared to other methods like hierarchical clustering or K-means. It also reviews related work applying these clustering algorithms to segment brain MRI images.
1) The document simulates and compares the performance of AODV and DSDV routing protocols in a mobile ad hoc network under three conditions: when users are fixed, when users move towards the base station, and when users move away from the base station.
2) The results show that both protocols have higher packet delivery and lower packet loss when users are either fixed or moving towards the base station, since signal strength is better in those scenarios. Performance degrades when users move away from the base station due to weaker signals.
3) AODV generally has better performance than DSDV, with higher throughput and packet delivery rates observed across the different user mobility conditions.
This document describes the design and implementation of 4-bit QPSK and 256-bit QAM modulation techniques using MATLAB. It compares the two techniques based on SNR, BER, and efficiency. The key steps of implementing each technique in MATLAB are outlined, including generating random bits, modulation, adding noise, and measuring BER. Simulation results show scatter plots and eye diagrams of the modulated signals. A table compares the results, showing that 256-bit QAM provides better performance than 4-bit QPSK. The document concludes that QAM modulation is more effective for digital transmission systems.
The document proposes a hybrid technique using Anisotropic Scale Invariant Feature Transform (A-SIFT) and Robust Ensemble Support Vector Machine (RESVM) to accurately identify faces in images. A-SIFT improves upon traditional SIFT by applying anisotropic scaling to extract richer directional keypoints. Keypoints are processed with RESVM and hypothesis testing to increase accuracy above 95% by repeatedly reprocessing images until the threshold is met. The technique was tested on similar and different facial images and achieved better results than SIFT in retrieval time and reduced keypoints.
This document studies the effects of dielectric superstrate thickness on microstrip patch antenna parameters. Three types of probes-fed patch antennas (rectangular, circular, and square) were designed to operate at 2.4 GHz using Arlondiclad 880 substrate. The antennas were tested with and without an Arlondiclad 880 superstrate of varying thicknesses. It was found that adding a superstrate slightly degraded performance by lowering the resonant frequency and increasing return loss and VSWR, while decreasing bandwidth and gain. Specifically, increasing the superstrate thickness or dielectric constant resulted in greater changes to the antenna parameters.
This document describes a wireless environment monitoring system that utilizes soil energy as a sustainable power source for wireless sensors. The system uses a microbial fuel cell to generate electricity from the microbial activity in soil. Two microbial fuel cells were created using different soil types and various additives to produce different current and voltage outputs. An electronic circuit was designed on a printed circuit board with components like a microcontroller and ZigBee transceiver. Sensors for temperature and humidity were connected to the circuit to monitor the environment wirelessly. The system provides a low-cost way to power remote sensors without needing battery replacement and avoids the high costs of wiring a power source.
1) The document proposes a model for a frequency tunable inverted-F antenna that uses ferrite material.
2) The resonant frequency of the antenna can be significantly shifted from 2.41GHz to 3.15GHz, a 31% shift, by increasing the static magnetic field placed on the ferrite material.
3) Altering the permeability of the ferrite allows tuning of the antenna's resonant frequency without changing the physical dimensions, providing flexibility to operate over a wide frequency range.
This document summarizes a research paper that presents a speech enhancement method using stationary wavelet transform. The method first classifies speech into voiced, unvoiced, and silence regions based on short-time energy. It then applies different thresholding techniques to the wavelet coefficients of each region - modified hard thresholding for voiced speech, semi-soft thresholding for unvoiced speech, and setting coefficients to zero for silence. Experimental results using speech from the TIMIT database corrupted with white Gaussian noise at various SNR levels show improved performance over other popular denoising methods.
This document reviews the design of an energy-optimized wireless sensor node that encrypts data for transmission. It discusses how sensing schemes that group nodes into clusters and transmit aggregated data can reduce energy consumption compared to individual node transmissions. The proposed node design calculates the minimum transmission power needed based on received signal strength and uses a periodic sleep/wake cycle to optimize energy when not sensing or transmitting. It aims to encrypt data at both the node and network level to further optimize energy usage for wireless communication.
This document discusses group consumption modes. It analyzes factors that impact group consumption, including external environmental factors like technological developments enabling new forms of online and offline interactions, as well as internal motivational factors at both the group and individual level. The document then proposes that group consumption modes can be divided into four types based on two dimensions: vertical (group relationship intensity) and horizontal (consumption action period). These four types are instrument-oriented, information-oriented, enjoyment-oriented, and relationship-oriented consumption modes. Finally, the document notes that consumption modes are dynamic and can evolve over time.
The document summarizes a study of different microstrip patch antenna configurations with slotted ground planes. Three antenna designs were proposed and their performance evaluated through simulation: a conventional square patch, an elliptical patch, and a star-shaped patch. All antennas were mounted on an FR4 substrate. The effects of adding different slot patterns to the ground plane on resonance frequency, bandwidth, gain and efficiency were analyzed parametrically. Key findings were that reshaping the patch and adding slots increased bandwidth and shifted resonance frequency. The elliptical and star patches in particular performed better than the conventional design. Three antenna configurations were selected for fabrication and measurement based on the simulations: a conventional patch with a slot under the patch, an elliptical patch with slots
1) The document describes a study conducted to improve call drop rates in a GSM network through RF optimization.
2) Drive testing was performed before and after optimization using TEMS software to record network parameters like RxLevel, RxQuality, and events.
3) Analysis found call drops were occurring due to issues like handover failures between sectors, interference from adjacent channels, and overshooting due to antenna tilt.
4) Corrective actions taken included defining neighbors between sectors, adjusting frequencies to reduce interference, and lowering the mechanical tilt of an antenna.
5) Post-optimization drive testing showed improvements in RxLevel, RxQuality, and a reduction in dropped calls.
This document describes the design of an intelligent autonomous wheeled robot that uses RF transmission for communication. The robot has two modes - automatic mode where it can make its own decisions, and user control mode where a user can control it remotely. It is designed using a microcontroller and can perform tasks like object recognition using computer vision and color detection in MATLAB, as well as wall painting using pneumatic systems. The robot's movement is controlled by DC motors and it uses sensors like ultrasonic sensors and gas sensors to navigate autonomously. RF transmission allows communication between the robot and a remote control unit. The overall aim is to develop a low-cost robotic system for industrial applications like material handling.
This document reviews cryptography techniques to secure the Ad-hoc On-Demand Distance Vector (AODV) routing protocol in mobile ad-hoc networks. It discusses various types of attacks on AODV like impersonation, denial of service, eavesdropping, black hole attacks, wormhole attacks, and Sybil attacks. It then proposes using the RC6 cryptography algorithm to secure AODV by encrypting data packets and detecting and removing malicious nodes launching black hole attacks. Simulation results show that after applying RC6, the packet delivery ratio and throughput of AODV increase while delay decreases, improving the security and performance of the network under attack.
The document describes a proposed modification to the conventional Booth multiplier that aims to increase its speed by applying concepts from Vedic mathematics. Specifically, it utilizes the Urdhva Tiryakbhyam formula to generate all partial products concurrently rather than sequentially. The proposed 8x8 bit multiplier was coded in VHDL, simulated, and found to have a path delay 44.35% lower than a conventional Booth multiplier, demonstrating its potential for higher speed.
This document discusses image deblurring techniques. It begins by introducing image restoration and focusing on image deblurring. It then discusses challenges with image deblurring being an ill-posed problem. It reviews existing approaches to screen image deconvolution including estimating point spread functions and iteratively estimating blur kernels and sharp images. The document also discusses handling spatially variant blur and summarizes the relationship between the proposed method and previous work for different blur types. It proposes using color filters in the aperture to exploit parallax cues for segmentation and blur estimation. Finally, it proposes moving the image sensor circularly during exposure to prevent high frequency attenuation from motion blur.
This document describes modeling an adaptive controller for an aircraft roll control system using PID, fuzzy-PID, and genetic algorithm. It begins by introducing the aircraft roll control system and motivation for developing an adaptive controller to minimize errors from noisy analog sensor signals. It then provides the mathematical model of aircraft roll dynamics and describes modeling the real-time flight control system in MATLAB/Simulink. The document evaluates PID, fuzzy-PID, and PID-GA (genetic algorithm) controllers for aircraft roll control and finds that the PID-GA controller delivers the best performance.
Connector Corner: Seamlessly power UiPath Apps, GenAI with prebuilt connectorsDianaGray10
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Join us to learn how UiPath Apps can directly and easily interact with prebuilt connectors via Integration Service--including Salesforce, ServiceNow, Open GenAI, and more.
The best part is you can achieve this without building a custom workflow! Say goodbye to the hassle of using separate automations to call APIs. By seamlessly integrating within App Studio, you can now easily streamline your workflow, while gaining direct access to our Connector Catalog of popular applications.
Weโll discuss and demo the benefits of UiPath Apps and connectors including:
Creating a compelling user experience for any software, without the limitations of APIs.
Accelerating the app creation process, saving time and effort
Enjoying high-performance CRUD (create, read, update, delete) operations, for
seamless data management.
Speakers:
Russell Alfeche, Technology Leader, RPA at qBotic and UiPath MVP
Charlie Greenberg, host
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
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Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
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5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power gridโs behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
"$10 thousand per minute of downtime: architecture, queues, streaming and fin...Fwdays
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Direct losses from downtime in 1 minute = $5-$10 thousand dollars. Reputation is priceless.
As part of the talk, we will consider the architectural strategies necessary for the development of highly loaded fintech solutions. We will focus on using queues and streaming to efficiently work and manage large amounts of data in real-time and to minimize latency.
We will focus special attention on the architectural patterns used in the design of the fintech system, microservices and event-driven architecture, which ensure scalability, fault tolerance, and consistency of the entire system.
How information systems are built or acquired puts information, which is what they should be about, in a secondary place. Our language adapted accordingly, and we no longer talk about information systems but applications. Applications evolved in a way to break data into diverse fragments, tightly coupled with applications and expensive to integrate. The result is technical debt, which is re-paid by taking even bigger "loans", resulting in an ever-increasing technical debt. Software engineering and procurement practices work in sync with market forces to maintain this trend. This talk demonstrates how natural this situation is. The question is: can something be done to reverse the trend?
Main news related to the CCS TSI 2023 (2023/1695)Jakub Marek
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An English ๐ฌ๐ง translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech ๐จ๐ฟ version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
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This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...Jason Yip
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The typical problem in product engineering is not bad strategy, so much as โno strategyโ. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If youโre wrong, it forces a correction. If youโre right, it helps create focus. Iโll share how Iโve approached this in the past, both what works and lessons for what didnโt work so well.
Fueling AI with Great Data with Airbyte WebinarZilliz
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This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
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A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
Monitoring and Managing Anomaly Detection on OpenShift.pdfTosin Akinosho
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Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
3. What is ArgoCD?
- Discover ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes, and its role in deploying applications on edge devices.
4. Deployment Using ArgoCD for Edge Devices
- Step-by-step guide on deploying anomaly detection models on edge devices using ArgoCD.
5. Introduction to Apache Kafka and S3
- Explore Apache Kafka for real-time data streaming and Amazon S3 for scalable storage solutions.
6. Viewing Kafka Messages in the Data Lake
- Learn how to view and analyze Kafka messages stored in a data lake for better insights.
7. What is Prometheus?
- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
- Learn how to configure Camel K for seamless data pipeline integrations in your anomaly detection workflow.
11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
Taking AI to the Next Level in Manufacturing.pdfssuserfac0301
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Read Taking AI to the Next Level in Manufacturing to gain insights on AI adoption in the manufacturing industry, such as:
1. How quickly AI is being implemented in manufacturing.
2. Which barriers stand in the way of AI adoption.
3. How data quality and governance form the backbone of AI.
4. Organizational processes and structures that may inhibit effective AI adoption.
6. Ideas and approaches to help build your organization's AI strategy.
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...Alex Pruden
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Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor IvaniukFwdays
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At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
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I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.
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B010310813
1. IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
e-ISSN: 2278-2834,p- ISSN: 2278-8735.Volume 10, Issue 3, Ver. I (May - Jun.2015), PP 08-13
www.iosrjournals.org
DOI: 10.9790/2834-10310813 www.iosrjournals.org 8 | Page
A New Class of Ternary Zero Correlation Zone Sequence Sets
Based on Mutually Orthogonal Complementary Sets
B. Fassi, H. Mimoun, R. Messaoudi, M. Addad
Telecommunications and Digital Signal Processing Laboratory, Djillali Liabes University of Sidi Bel Abbes,
Algeria
Abstract: This paper proposes a new class of ternary zero correlation zone (ZCZ) sequence sets based on
mutually orthogonal complementary sets (MOCS), in which the periodic cross-correlation function and the out-
of-phase of the periodic auto-correlation function of the proposed sequence set are zero in a specified zone of
phase shift. It is shown that the proposed zero correlation zone sequence set can achieve the upper bound on the
ternary ZCZ codes.
Keywords - Sequence design, mutually orthogonal complementary sets, theoretical upper bound, zero
correlation zone (ZCZ) sequences.
I. Introduction
Different types of sequence set used in communications systems have been studied in order to reduce
the Multiple Access Interference (MAI) [1-6].
Zero correlation zone (ZCZ) sequences, which have vigorously been studied now, are defined to be a
sequence set with ZCZ which means the duration with zero auto-correlation function and zero cross-correlation
function at out-of-phase state [1-12]. When ZCZ sequences are used as spreading sequences in DS-CDMA, it
can effectively eliminate MAI if all multiple access delays are inside ZCZ [1-6]. There are various intensive
studies on the constructing of ZCZ sequences including binary, ternary and polyphase sequences [1-12].
Generally, sets of ZCZ sequences are characterized by the period of sequences N, the family size,
namely the number of sequences M, and the length of the zero-correlation zone ZCZ [7]. A ZCZ (N, M, ZCZ)
sequence set that satisfies the theoretical bound defined by the ratio M Zcz + 1 /N = 1 is called an optimal
zero-correlation zone sequence set [7, 10].
In this paper, we propose a new construction method to obtain ternary ZCZ sequence sets based on
binary mutually orthogonal complementary set (MOCS) and from padding zero between sequences of MOCS.
Our proposed ternary zero-correlation zone sequence set is almost optimal ZCZ sequence set.
The paper is organized as follows. Section 2 introduces the notations required for the subsequent
sections, the proposed scheme for sequence construction is explained in section 3. Examples of new ZCZ
sequence sets are presented in Section 4. The properties of the proposed sequence sets are shown in Section 5.
Finally, we draw the concluding remarks.
II. Notations
2.1 Definition 1: Suppose Xj=(xj,0, xj,1, โฆ โฆ . xj,Nโ1) and, Xv =(xv,0, xv,1, โฆ โฆ . xv,Nโ1) are two sequences of period
N. Sequence pair (Xj, Xv) is called a binary sequence pair if
xj,i, xv,i โ โ1, +1 , i = 0,1,2, โฆ โฆ โฆ N โ 1 [2].
The Periodic Correlation Function (PCF) between Xj and Xv at a shift ฯ is defined by [8]:
โฯ โฅ 0, ฮธ Xj ,Xv
ฯ = xj,ixv, i+ฯ mod (N)
Nโ1
i=0 and ฮธ Xv ,Xj
โฯ = ฮธ Xj ,Xv
ฯ (1)
2.2 Definition 2: A set of M sequences X0, X1, X2, โฆ โฆ , XMโ1 is denoted by Xj j=0
Mโ1
.
A set of sequences Xj j=0
Mโ1
is called zero correlation zone sequence set, denoted by Z(N,M,ZCZ) if the periodic
correlation functions satisfy [8] :
โj, 0 < ฯ โค Zcz , ฮธ Xj ,Xj
ฯ =0 (2)
โj, j โ v , ฯ โค Zcz , ฮธ Xj ,Xv
ฯ =0 (3)
2.3 Definition 3: Let each element of an H ร H matrix F(n)
(n โฅ 0 ) be a sequence of length l = 2n
ร lm =
2m+n, where lm=2m and mโฅ0 [5].
2. A New Class of Ternary Zero Correlation Zone Sequence Sets Based on Mutually Orthogonalโฆ
DOI: 10.9790/2834-10310813 www.iosrjournals.org 9 | Page
F(n)
=
F11
n
F12
n
F21
n
F22
n
โฏ
F1k
n
F1H
n
F2k
n
F2H
n
โฎ โฑ โฎ
FH1
n
FH2
n
โฏ FHk
n
FHH
n
(HรH)
(4)
If F satisfies the following formulas, then F is a MOCS [13]:
ฯFj,k Fj,k
(ฯ)H
k=1 = 0, for โj, โฯ โ 0 (5)
ฯFj,k Fs,k
(ฯ)H
k=1 = 0, for โj โ s , โฯ (6)
Where ฯFj,k Fj,k
(ฯ) and ฯFj,k Fs,k
(ฯ) are the aperiodic autocorrelation and cross-correlation functions, respectively
[10].
III. Proposed Sequence Construction
In this section, a new method for constructing sets of ternary ZCZ sequences is proposed.
The construction is accomplished through three steps.
3.1 Step 1: The matrix MOCS of dimension H ร H = (2n+1
, 2n+1
). Since each element in F(n)
is a sequence
of length l = 2n
ร lm = 2m+n
, each raw has a length of L = 22n+m+1
. The matrix MOCS is (2n+1
ร
22n+m+1
) with n โฅ 0 and m โฅ 0 [5].
F(n)
=
F11
(n)
F12
(n)
F21
(n)
F22
(n)
โฏ
F1k
(n)
F1H
(n)
F2k
(n)
F2H
(n)
โฎ โฑ โฎ
FH1
(n)
FH2
(n)
โฏ FHk
(n)
FHH
(n)
=
f1
โฎ
fj
โฎ
fH
(7)
A set of ๐ = 2๐ป = 2 ๐+2
sequences ๐๐ , each of length ๐ = 2๐ฟ + 2 = 22๐+๐+2
+ 2, is constructed as
follows:
For 1 โค ๐ โค ๐ป
๐๐ +0 = โ๐๐ 0 ๐๐ 0 =[ โ๐น๐1
(๐)
โฆ โ๐น๐๐
(๐)
โฆ . โ๐น๐๐ป
๐
0 ๐น๐1
(๐)
โฆ ๐น๐๐
(๐)
โฆ. ๐น๐๐ป
๐
0] (8)
๐๐ +1 = ๐๐ 0 ๐๐ 0 =[ ๐น๐1
(๐)
โฆ ๐น๐๐
(๐)
โฆ. ๐น๐๐ป
๐
0 ๐น๐1
(๐)
โฆ ๐น๐๐
(๐)
โฆ. ๐น๐๐ป
๐
0] (9)
Where [๐๐ 0 ๐๐ 0] is called the concatenation operation between two rows ๐๐ and ๐๐ of the matrix ๐น(๐)
and two
zeros.
3.2 Step 2: For the first iteration, ๐ = 0, we can generate , based on interleaving technique in [10], a series of
sets ๐๐ of ๐ sequences.
A pair of sequences ๐๐ +0 and ๐๐ +1of length ๐ = 2 ๐+1
ร ๐ = 2 ๐+1
ร 22๐+๐+2
+ 2 = 2 ๐+1
ร
2ร ๐ฟ+2 is constructed by interleaving elements (ยฑ ๐น๐๐๐ ๐๐ก 0 ) of a sequence pair ๐๐+0 and ๐๐+1 as follows (by
using equations (8) and (9)):
For 1 โค ๐ โค ๐ป,
๐๐ +0 = [๐๐ +0,1, ๐๐ +1,1, ๐๐ +0,2, ๐๐+1,2, โฆ โฆ , ๐๐+0,๐, ๐๐ +1,๐] (10)
๐๐ +0 = [โ๐น๐1
๐
๐น๐1
๐
โฆ โ ๐น๐๐
๐
๐น๐๐
๐
โฆ โ๐น๐๐ป
๐
๐น๐๐ป
๐
0 0 ๐น๐1
๐
๐น๐1
๐
โฆ ๐น๐๐
๐
๐น๐๐
๐
โฆ ๐น๐๐ป
๐
๐น๐๐ป
๐
0 0]
and,
๐๐ +1 = [๐๐ +0,1, โ๐๐ +1,1, ๐๐ +0,2, โ๐๐ +1,2, โฆ โฆ , ๐๐ +0,๐, โ๐๐ +1,๐] (11)
๐๐ +1 = [โ๐น๐1
๐
โ ๐น๐1
๐
โฆ โ ๐น๐๐
๐
โ ๐น๐๐
๐
โฆ โ ๐น๐๐ป
๐
โ ๐น๐๐ป
๐
0 0 ๐น๐1
๐
โ ๐น๐1
๐
โฆ ๐น๐๐
๐
โ๐น๐๐
๐
โฆ ๐น๐๐ป
๐
โ ๐น๐๐ป
๐
0 0 ]
The member size of the sequence set ๐๐ is ๐ = 2๐ป = 2 ๐+2
.
3.3 Step 3: For ๐ > 0, we can recursively construct a new series of set, T๐ , by interleaving of actual ๐๐ (in
equations (10) and (11)). Both sequences ๐๐ +0 and ๐๐ +1 are of length ๐ = 2 ๐+1
ร ๐ .
5. A New Class of Ternary Zero Correlation Zone Sequence Sets Based on Mutually Orthogonalโฆ
DOI: 10.9790/2834-10310813 www.iosrjournals.org 12 | Page
Figure 2. The cross-correlation function between ๐1+0 and ๐2+0 with ๐๐ถ๐(72,8,6)
The periodic correlation function confirm that ๐๐ is a ZCZ (72,8,6) sequence set.
V. The Properties Of The Proposed Sequence
The proposed ternary ZCZ sequence set can satisfy the ideal autocorrelation and cross-correlation properties in
the zero-correlation zone.
The generated sequence set satisfies the following properties:
โ๐, โ๐ โ 0, ๐ โค ๐ ๐ถ๐
๐ ๐ ๐ ,๐ ๐
๐ =0 (14)
and,
โ๐ โ ๐ฃ, โ๐, ๐ โค ๐ ๐ถ๐
๐ ๐ ๐ ,๐๐ฃ
๐ =0. (15)
The ๐๐ is a ternary ZCZ sequence set having parameters:
1) For ๐ + ๐ = 0, ๐๐ถ๐ ๐, ๐, ๐ ๐ถ๐ = ๐๐ถ๐(2 ๐+2
1 + 22๐+๐+1
, 2 ๐+2
, 2 ๐+๐+๐+1
โ 1) = ๐๐ถ๐ 2 ๐+1
ร
6,4,2 ๐+1โ1.
2) For ๐ + ๐ = 1, ๐๐ถ๐ ๐, ๐, ๐ ๐ถ๐ = ๐๐ถ๐(2 ๐+2
1 + 22๐+๐+1
, 2n+2
, 2n+m+p+1
โ 2) = ZCZ 2p+2
1 +
2n+2,2n+2,2p+2โ2.
3) For n + m > 1, ZCZ N, M, ZCZ = ZCZ(2p+2
1 + 22n+m+1
, 2n+2
, 2n+m+p
+ 4 ร p).
VI. Conclusion
In this paper, we have proposed a new method for constructing sets of ternary ZCZ sequences based on
binary mutually orthogonal complementary set (MOCS) and from padding zero between sequences of MOCS.
The periodic auto-correlation function side lobes and the periodic cross-correlation function of the proposed
sequence set is zero for the phase shifts within the zero correlation zone. The proposed ternary ZCZ sequence
set is almost optimal ZCZ sequence set.
0 10 20 30 40 50 60 70 80
0
5
10
15
20
25
30
35
Delay Time
PeriodicCross-CorrelationFunction
The Periodic Cross-Correlation Function
6. A New Class of Ternary Zero Correlation Zone Sequence Sets Based on Mutually Orthogonalโฆ
DOI: 10.9790/2834-10310813 www.iosrjournals.org 13 | Page
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