One of the project estimation technique in analytical estimation technique is Halsteads Software Science. Halstead's Technique measure 1) size, 2) Development effort, 3) Development cost
Language and Processors for Requirements Specificationkirupasuchi1996
This document discusses several languages and processors that have been developed for requirements specification in software development. It describes Problem Statement Language (PSL) and its processor, the Problem Statement Analyzer (PSA), which were developed to allow concise statement and automated analysis of requirements. It also discusses the Requirements Statement Language (RSL) and Requirements Engineering Validation System (REVS). Finally, it provides a brief overview of Structured Analysis and Design Technique (SADT), including its data and activity diagram components.
UML (Unified Modeling Language) is a standard modeling language used to visualize, specify, construct, and document software systems. It uses graphical notation to depict systems from initial design through detailed design. Common UML diagram types include use case diagrams, class diagrams, sequence diagrams, activity diagrams, and state machine diagrams. UML provides a standard way to communicate designs across development teams and is supported by many modeling tools.
Here is the NFA in formal notation:
Q = {q0, q1, q2}
Σ = {a, b}
q0 = q1 (the initial state)
F = {q0} (the single accepting state)
q0
The transition function δ is:
a
q1 → {q0, q2}
q2 → {q0}
b
This NFA accepts ε, a, baba, baa, and aa since there is a path from the initial state q1 to the accepting state q0 under those inputs. It does not accept b, bb, or babba since there is no path from
The document discusses software process models. It describes the waterfall model, which is a generic process framework for software engineering that defines five framework activities: communication, planning, modeling, construction, and deployment. It also discusses umbrella activities that are applied throughout the process, such as project tracking and control. The waterfall model prescribes distinct activities, actions, tasks, milestones, and work products for software development. However, process models need to be adapted to meet the needs of specific projects.
This document discusses various techniques for estimating software costs:
1. Expert judgment relies on experienced people's assessments but can be unreliable due to biases. The Delphi technique improves expert judgment by anonymously aggregating estimates over multiple rounds.
2. Work breakdown structures break projects down into components to estimate costs bottom-up. The COCOMO model also estimates bottom-up using algorithmic formulas adjusted by multipliers for attributes.
3. COCOMO is demonstrated through an example estimating effort of 191 person-months and a 13 month schedule for a 30,000 line embedded software project with high reliability requirements.
The document discusses conventional software management and its challenges. It provides three key points:
1. Only 10% of software projects were delivered successfully on time and budget in the 1990s due to software development being unpredictable and management discipline being a bigger factor in success than technology.
2. The waterfall model was the conventional approach but had issues like late risk resolution, requirements-driven decomposition, and adversarial stakeholder relationships.
3. Modern practices from the 2000s onward used more repeatable processes, off-the-shelf tools, and commercial products for improved economics compared to custom approaches of the 1960-1990 period.
Unit testing is often automated but it can also be done manually. Debugging is a process of line by line execution of the code/ script with the intent of finding errors/ fixing the defects.
Branch and Bound is a state space search algorithm that involves generating all children of a node before exploring any children. It uses lower bounds to prune parts of the search tree that cannot produce better solutions than what has already been found. The algorithm is demonstrated on problems like the 8-puzzle and Travelling Salesman Problem. For TSP, it works by reducing the cost matrix at each node to calculate lower bounds, and exploring the child with the lowest estimated total cost.
Language and Processors for Requirements Specificationkirupasuchi1996
This document discusses several languages and processors that have been developed for requirements specification in software development. It describes Problem Statement Language (PSL) and its processor, the Problem Statement Analyzer (PSA), which were developed to allow concise statement and automated analysis of requirements. It also discusses the Requirements Statement Language (RSL) and Requirements Engineering Validation System (REVS). Finally, it provides a brief overview of Structured Analysis and Design Technique (SADT), including its data and activity diagram components.
UML (Unified Modeling Language) is a standard modeling language used to visualize, specify, construct, and document software systems. It uses graphical notation to depict systems from initial design through detailed design. Common UML diagram types include use case diagrams, class diagrams, sequence diagrams, activity diagrams, and state machine diagrams. UML provides a standard way to communicate designs across development teams and is supported by many modeling tools.
Here is the NFA in formal notation:
Q = {q0, q1, q2}
Σ = {a, b}
q0 = q1 (the initial state)
F = {q0} (the single accepting state)
q0
The transition function δ is:
a
q1 → {q0, q2}
q2 → {q0}
b
This NFA accepts ε, a, baba, baa, and aa since there is a path from the initial state q1 to the accepting state q0 under those inputs. It does not accept b, bb, or babba since there is no path from
The document discusses software process models. It describes the waterfall model, which is a generic process framework for software engineering that defines five framework activities: communication, planning, modeling, construction, and deployment. It also discusses umbrella activities that are applied throughout the process, such as project tracking and control. The waterfall model prescribes distinct activities, actions, tasks, milestones, and work products for software development. However, process models need to be adapted to meet the needs of specific projects.
This document discusses various techniques for estimating software costs:
1. Expert judgment relies on experienced people's assessments but can be unreliable due to biases. The Delphi technique improves expert judgment by anonymously aggregating estimates over multiple rounds.
2. Work breakdown structures break projects down into components to estimate costs bottom-up. The COCOMO model also estimates bottom-up using algorithmic formulas adjusted by multipliers for attributes.
3. COCOMO is demonstrated through an example estimating effort of 191 person-months and a 13 month schedule for a 30,000 line embedded software project with high reliability requirements.
The document discusses conventional software management and its challenges. It provides three key points:
1. Only 10% of software projects were delivered successfully on time and budget in the 1990s due to software development being unpredictable and management discipline being a bigger factor in success than technology.
2. The waterfall model was the conventional approach but had issues like late risk resolution, requirements-driven decomposition, and adversarial stakeholder relationships.
3. Modern practices from the 2000s onward used more repeatable processes, off-the-shelf tools, and commercial products for improved economics compared to custom approaches of the 1960-1990 period.
Unit testing is often automated but it can also be done manually. Debugging is a process of line by line execution of the code/ script with the intent of finding errors/ fixing the defects.
Branch and Bound is a state space search algorithm that involves generating all children of a node before exploring any children. It uses lower bounds to prune parts of the search tree that cannot produce better solutions than what has already been found. The algorithm is demonstrated on problems like the 8-puzzle and Travelling Salesman Problem. For TSP, it works by reducing the cost matrix at each node to calculate lower bounds, and exploring the child with the lowest estimated total cost.
The document provides an overview of the Software Engineering course for the second semester of the second year (B.Tech IT/II Sem-II). It includes details about the term, text books, unit syllabus, index of topics, and slides covering introductions to software engineering, the changing nature of software, software myths, generic views of process, the Capability Maturity Model Integration and personal and team software processes.
Practical Malware Analysis: Ch 6: Recognizing C Code Constructs in AssemblySam Bowne
This document discusses techniques for recognizing C constructs in assembly code, including function calls, variables, arithmetic operations, and branching. It explains that function arguments are pushed onto the stack in reverse order before a call instruction launches the function. Global variables are stored in memory and available to all functions, while local variables are stored on the stack and only available within their local function. Arithmetic operations move variables into registers, perform operations like addition and subtraction, and move results back to variables. Branching compares values and uses conditional jump instructions like jz and jnz to follow red or green arrows for false or true outcomes.
This document discusses various design notations that can be used at different levels of software design, including:
- Data flow diagrams, structure charts, HIPO diagrams, pseudo code, and structured flowcharts, which can be used for external, architectural, and detailed design specifications.
- Data flow diagrams use nodes and arcs to represent processing activities and data flow. Structure charts show hierarchical structure and interconnections. HIPO diagrams use a tree structure.
- Other notations discussed include procedure templates for interface specifications, pseudo code for algorithms and logic, and decision tables for complex decision logic.
The document describes Agile Unified Process (AUP), a simplified version of Rational Unified Process (RUP) for developing business application software. AUP has seven steps - Model, Implementation, Test, Deployment, Configuration Management, Project Management, and Environment. It follows an iterative approach with incremental releases over time, releasing portions of the product in versions with development releases at the end of each iteration and subsequent production releases taking less time.
This document discusses 2D geometric transformations including translation, rotation, and scaling. It provides the mathematical definitions and matrix representations for each transformation. Translation moves an object along a straight path, rotation moves it along a circular path, and scaling changes its size. All transformations can be represented by 3x3 matrices using homogeneous coordinates to allow combinations of multiple transformations. The inverse of each transformation matrix is also defined.
The document discusses the equivalence between context-free grammars (CFGs) and pushdown automata (PDAs). It states that for any CFG, an equivalent PDA can be constructed to accept the language generated by the grammar, and vice versa. This allows a programming language to be specified by a CFG and implemented with a PDA in a compiler. The document also provides procedures for converting between CFGs and PDAs, including an example of constructing a PDA from a given CFG.
This document discusses the process of converting a context-free grammar (CFG) into Chomsky normal form (CNF) in multiple steps. It first recalls the definition of CNF and the theorem that every context-free language minus the empty string has a CFG in CNF. It then outlines the steps to convert a CFG to CNF: 1) remove epsilon productions, 2) remove unit rules, 3) break productions with more than two variables into chains of productions with two variables, and 4) ensure all productions are in the forms A->BC or A->a. The document provides two examples showing the full conversion process.
Systemd: the modern Linux init system you will learn to loveAlison Chaiken
The talk combines a design overview of systemd with some tutorial incofrmation about how to configure it. Systemd's features and pitfalls are illustrated by short demos and real-life examples. Files used in the demos are listed under "Presentations" at http://she-devel.com/
Video of the live presentation will appear here:
http://www.meetup.com/Silicon-Valley-Linux-Technology/events/208133972/
source code metrics and other maintenance tools and techniquesSiva Priya
The document discusses two source code metrics: Halstead's effort equation and McCabe's cyclomatic complexity measure. Halstead's metrics are based on counts of operators, operands, unique operators, and unique operands in source code. McCabe's measure defines the complexity of a program's control flow graph based on the number of edges, nodes, and connected components. The document also mentions that software maintenance involves a range of activities from code modification to tracking complexity metrics over time.
The document discusses software requirements and requirements engineering. It introduces concepts like user requirements, system requirements, functional requirements, and non-functional requirements. It explains how requirements can be organized in a requirements document and the different types of stakeholders who read requirements. The document also discusses challenges in writing requirements precisely and provides examples of requirements specification for a library system called LIBSYS.
This document discusses processes in Linux. It defines a process as a running instance of a program in memory that is allocated space for variables and instructions. All processes are descended from the systemd process. It describes process states like running, sleeping, stopped, and zombie. It also discusses process monitoring and management tools like top, ps, kill, and setting process priorities with nice and renice. Examples are provided on using ps to view specific processes by user, name, ID, parent ID, and customize the output.
This document discusses various techniques for evaluating projects, including:
- Strategic assessment to evaluate how projects align with organizational goals and strategies.
- Technical assessment to evaluate functionality against available hardware, software, and solutions.
- Cost-benefit analysis to compare expected project costs and benefits in monetary terms over time.
- Cash flow forecasting to estimate costs and benefits over the project lifecycle.
- Risk evaluation to assess potential risks and their impacts.
Project evaluation is important for determining progress, outcomes, effectiveness, and justification of project inputs and results. The challenges include commitment, establishing baselines, identifying indicators, and allocating time for monitoring and evaluation.
Software maintenance typically requires 40-60% of the total lifecycle effort for a software product, with some cases requiring as much as 90%. A widely used rule of thumb is that maintenance activities are distributed as 60% for enhancements, 20% for adaptations, and 20% for corrections. Studies show the typical level of effort devoted to software maintenance is around 50% of the total lifecycle effort. Boehm suggests measuring maintenance effort using an activity ratio that considers the number of instructions added or modified over the total instructions. The effort required can then be estimated using programmer months based on the activity ratio and an effort adjustment factor. Emphasis on reliability during development can reduce future maintenance effort.
A syntax-directed definition (SDD) is a context-free grammar with attributes and semantic rules. Attributes are associated with grammar symbols and rules are associated with productions. An SDD can be evaluated on a parse tree to compute attribute values at each node. There are two types of attributes: synthesized attributes depend on child nodes, while inherited attributes depend on parent or sibling nodes. The order of evaluation is determined by a dependency graph showing the flow of information between attribute instances.
Single Instruction Multiple Data (SIMD) is an approach to improve performance by replicating data paths rather than control. Vector processors apply the same operation to all elements of a vector in parallel. The ILLIAC IV was an early SIMD computer from 1972 with 64 processing elements. Vector processors store vectors in registers and apply the same instruction to all elements simultaneously. The Cray-1 was an influential vector supercomputer from 1978 that used vector registers and optimized memory access for vectors. Vectorization improves performance by performing the same operation on multiple data elements with a single instruction.
This document provides an overview of class diagrams in UML. It describes the key components of a class diagram including classes, attributes, operations, and relationships. A class represents a set of objects with common properties and behavior. It includes a name, attributes, and operations. Relationships between classes such as dependencies, generalizations, and associations are also depicted. The document provides examples of how to represent these components and relationships in a UML class diagram.
Greate Introduction to Software Engineering @ Track IT AcademyMohamed Shahpoup
The document provides an overview of software engineering concepts including software processes, rapid software development, practices, and a case study on the V-Model process. It defines software and software engineering. It describes common software process models like waterfall, iterative development, and component-based development. It also covers rapid software development approaches like incremental delivery and agile methods. Key practices discussed include pair programming, prototyping, and activities in the software development lifecycle. Finally, it presents the phases of the V-Model process and how it maps testing to requirements and design.
Algorithmic software cost modeling uses mathematical functions to estimate project costs based on inputs like project characteristics, development processes, and product attributes. COCOMO is a widely used algorithmic cost modeling method that estimates effort in person-months and development time based on source lines of code and cost adjustment factors. It has basic, intermediate, and detailed models and accounts for factors like application domain experience, process quality, and technology changes.
This document discusses parallel algorithms for sorting. It begins by defining parallel algorithms and explaining that the lower bound for comparison-based sorting of n elements is Θ(n log n). It then discusses several parallel sorting algorithms: odd-even transposition sort on a linear array, quicksort, and sorting networks. It also covers sorting on different parallel models like CRCW, CREW, and EREW. An example is provided of applying an EREW sorting algorithm to a sample data set by recursively dividing it into subsequences until single elements remain to be sorted locally.
A comparative review of various approaches for feature extraction in Face rec...Vishnupriya T H
This document provides an overview of various approaches for feature extraction in face recognition. It discusses common feature extraction algorithms such as PCA, DCT, LDA, and ICA. PCA is aimed at data compression while ensuring no information loss. DCT transforms images from spatial to frequency domains. LDA maximizes between-class variations and minimizes within-class variations. ICA determines statistically independent variables and minimizes higher-order dependencies. The document reviews several papers comparing the performance of these algorithms individually and in combination for face recognition applications.
The document provides an overview of the Software Engineering course for the second semester of the second year (B.Tech IT/II Sem-II). It includes details about the term, text books, unit syllabus, index of topics, and slides covering introductions to software engineering, the changing nature of software, software myths, generic views of process, the Capability Maturity Model Integration and personal and team software processes.
Practical Malware Analysis: Ch 6: Recognizing C Code Constructs in AssemblySam Bowne
This document discusses techniques for recognizing C constructs in assembly code, including function calls, variables, arithmetic operations, and branching. It explains that function arguments are pushed onto the stack in reverse order before a call instruction launches the function. Global variables are stored in memory and available to all functions, while local variables are stored on the stack and only available within their local function. Arithmetic operations move variables into registers, perform operations like addition and subtraction, and move results back to variables. Branching compares values and uses conditional jump instructions like jz and jnz to follow red or green arrows for false or true outcomes.
This document discusses various design notations that can be used at different levels of software design, including:
- Data flow diagrams, structure charts, HIPO diagrams, pseudo code, and structured flowcharts, which can be used for external, architectural, and detailed design specifications.
- Data flow diagrams use nodes and arcs to represent processing activities and data flow. Structure charts show hierarchical structure and interconnections. HIPO diagrams use a tree structure.
- Other notations discussed include procedure templates for interface specifications, pseudo code for algorithms and logic, and decision tables for complex decision logic.
The document describes Agile Unified Process (AUP), a simplified version of Rational Unified Process (RUP) for developing business application software. AUP has seven steps - Model, Implementation, Test, Deployment, Configuration Management, Project Management, and Environment. It follows an iterative approach with incremental releases over time, releasing portions of the product in versions with development releases at the end of each iteration and subsequent production releases taking less time.
This document discusses 2D geometric transformations including translation, rotation, and scaling. It provides the mathematical definitions and matrix representations for each transformation. Translation moves an object along a straight path, rotation moves it along a circular path, and scaling changes its size. All transformations can be represented by 3x3 matrices using homogeneous coordinates to allow combinations of multiple transformations. The inverse of each transformation matrix is also defined.
The document discusses the equivalence between context-free grammars (CFGs) and pushdown automata (PDAs). It states that for any CFG, an equivalent PDA can be constructed to accept the language generated by the grammar, and vice versa. This allows a programming language to be specified by a CFG and implemented with a PDA in a compiler. The document also provides procedures for converting between CFGs and PDAs, including an example of constructing a PDA from a given CFG.
This document discusses the process of converting a context-free grammar (CFG) into Chomsky normal form (CNF) in multiple steps. It first recalls the definition of CNF and the theorem that every context-free language minus the empty string has a CFG in CNF. It then outlines the steps to convert a CFG to CNF: 1) remove epsilon productions, 2) remove unit rules, 3) break productions with more than two variables into chains of productions with two variables, and 4) ensure all productions are in the forms A->BC or A->a. The document provides two examples showing the full conversion process.
Systemd: the modern Linux init system you will learn to loveAlison Chaiken
The talk combines a design overview of systemd with some tutorial incofrmation about how to configure it. Systemd's features and pitfalls are illustrated by short demos and real-life examples. Files used in the demos are listed under "Presentations" at http://she-devel.com/
Video of the live presentation will appear here:
http://www.meetup.com/Silicon-Valley-Linux-Technology/events/208133972/
source code metrics and other maintenance tools and techniquesSiva Priya
The document discusses two source code metrics: Halstead's effort equation and McCabe's cyclomatic complexity measure. Halstead's metrics are based on counts of operators, operands, unique operators, and unique operands in source code. McCabe's measure defines the complexity of a program's control flow graph based on the number of edges, nodes, and connected components. The document also mentions that software maintenance involves a range of activities from code modification to tracking complexity metrics over time.
The document discusses software requirements and requirements engineering. It introduces concepts like user requirements, system requirements, functional requirements, and non-functional requirements. It explains how requirements can be organized in a requirements document and the different types of stakeholders who read requirements. The document also discusses challenges in writing requirements precisely and provides examples of requirements specification for a library system called LIBSYS.
This document discusses processes in Linux. It defines a process as a running instance of a program in memory that is allocated space for variables and instructions. All processes are descended from the systemd process. It describes process states like running, sleeping, stopped, and zombie. It also discusses process monitoring and management tools like top, ps, kill, and setting process priorities with nice and renice. Examples are provided on using ps to view specific processes by user, name, ID, parent ID, and customize the output.
This document discusses various techniques for evaluating projects, including:
- Strategic assessment to evaluate how projects align with organizational goals and strategies.
- Technical assessment to evaluate functionality against available hardware, software, and solutions.
- Cost-benefit analysis to compare expected project costs and benefits in monetary terms over time.
- Cash flow forecasting to estimate costs and benefits over the project lifecycle.
- Risk evaluation to assess potential risks and their impacts.
Project evaluation is important for determining progress, outcomes, effectiveness, and justification of project inputs and results. The challenges include commitment, establishing baselines, identifying indicators, and allocating time for monitoring and evaluation.
Software maintenance typically requires 40-60% of the total lifecycle effort for a software product, with some cases requiring as much as 90%. A widely used rule of thumb is that maintenance activities are distributed as 60% for enhancements, 20% for adaptations, and 20% for corrections. Studies show the typical level of effort devoted to software maintenance is around 50% of the total lifecycle effort. Boehm suggests measuring maintenance effort using an activity ratio that considers the number of instructions added or modified over the total instructions. The effort required can then be estimated using programmer months based on the activity ratio and an effort adjustment factor. Emphasis on reliability during development can reduce future maintenance effort.
A syntax-directed definition (SDD) is a context-free grammar with attributes and semantic rules. Attributes are associated with grammar symbols and rules are associated with productions. An SDD can be evaluated on a parse tree to compute attribute values at each node. There are two types of attributes: synthesized attributes depend on child nodes, while inherited attributes depend on parent or sibling nodes. The order of evaluation is determined by a dependency graph showing the flow of information between attribute instances.
Single Instruction Multiple Data (SIMD) is an approach to improve performance by replicating data paths rather than control. Vector processors apply the same operation to all elements of a vector in parallel. The ILLIAC IV was an early SIMD computer from 1972 with 64 processing elements. Vector processors store vectors in registers and apply the same instruction to all elements simultaneously. The Cray-1 was an influential vector supercomputer from 1978 that used vector registers and optimized memory access for vectors. Vectorization improves performance by performing the same operation on multiple data elements with a single instruction.
This document provides an overview of class diagrams in UML. It describes the key components of a class diagram including classes, attributes, operations, and relationships. A class represents a set of objects with common properties and behavior. It includes a name, attributes, and operations. Relationships between classes such as dependencies, generalizations, and associations are also depicted. The document provides examples of how to represent these components and relationships in a UML class diagram.
Greate Introduction to Software Engineering @ Track IT AcademyMohamed Shahpoup
The document provides an overview of software engineering concepts including software processes, rapid software development, practices, and a case study on the V-Model process. It defines software and software engineering. It describes common software process models like waterfall, iterative development, and component-based development. It also covers rapid software development approaches like incremental delivery and agile methods. Key practices discussed include pair programming, prototyping, and activities in the software development lifecycle. Finally, it presents the phases of the V-Model process and how it maps testing to requirements and design.
Algorithmic software cost modeling uses mathematical functions to estimate project costs based on inputs like project characteristics, development processes, and product attributes. COCOMO is a widely used algorithmic cost modeling method that estimates effort in person-months and development time based on source lines of code and cost adjustment factors. It has basic, intermediate, and detailed models and accounts for factors like application domain experience, process quality, and technology changes.
This document discusses parallel algorithms for sorting. It begins by defining parallel algorithms and explaining that the lower bound for comparison-based sorting of n elements is Θ(n log n). It then discusses several parallel sorting algorithms: odd-even transposition sort on a linear array, quicksort, and sorting networks. It also covers sorting on different parallel models like CRCW, CREW, and EREW. An example is provided of applying an EREW sorting algorithm to a sample data set by recursively dividing it into subsequences until single elements remain to be sorted locally.
A comparative review of various approaches for feature extraction in Face rec...Vishnupriya T H
This document provides an overview of various approaches for feature extraction in face recognition. It discusses common feature extraction algorithms such as PCA, DCT, LDA, and ICA. PCA is aimed at data compression while ensuring no information loss. DCT transforms images from spatial to frequency domains. LDA maximizes between-class variations and minimizes within-class variations. ICA determines statistically independent variables and minimizes higher-order dependencies. The document reviews several papers comparing the performance of these algorithms individually and in combination for face recognition applications.
The document is a resume for an applicant seeking a job in a professional environment where they can apply their technical skills and grow as a fresh graduate. It summarizes the applicant's education in electronics and communication engineering, technical skills in Java, SQL, and JDBC programming, projects involving automation and security systems, and proficiency in Microsoft Office and web development tools. The applicant's objective is to contribute their knowledge and skills while fulfilling organizational goals.
Encouraged by the strong desire to manufacture a comprehensive selection of unmatched quality furniture products, we C. P. M. Systems Pvt. Ltd., have commenced our operations in the year 2011,.
Swpanica Exim; India II Proma Doors II OB Modular Kitchen II Omeya Bath Set I...Swapan Bose
We, Swapnica Exim Trading Solutions Private Limited. (SETS.) the marketing partners of Proma Doors; OB Kitchens; Kider Wooden Flooring; and Omeya Bath Set bring the best of European products here in India. Having references worldwide, we introduce these for the first time in India with an idea of creating a beautiful, economical as well as luxurious and green experience in the country.
Este documento describe el cableado estructurado y sus características. El cableado estructurado permite integrar servicios de voz, datos y video, así como sistemas de control y automatización de un edificio bajo una plataforma estandarizada. Consiste en una infraestructura flexible de cables que puede aceptar y soportar sistemas de computación y teléfonos múltiples. Puede utilizar cable de par trenzado de cobre, fibra óptica o cable coaxial para transportar señales de un emisor a un receptor dentro de un edific
The Industrial Revolution was a period from the 18th to 19th century where major changes in agriculture, manufacturing, transportation, and technology had a profound socioeconomic impact. This included a shift from an agricultural to industrial economy based on factory production rather than home production. New technologies like the steam engine allowed factories to mass produce goods. This led to urbanization as people moved to cities to work in the factories. While industrialization increased production, it also led to poor living and working conditions for many.
El documento describe los pasos para elaborar formularios de pruebas Saber en Microsoft Formularios. Explica cómo crear una carpeta de formularios, agregar títulos e imágenes a las preguntas, configurarlas como preguntas de selección múltiple y marcarlas como obligatorias. También cubre cómo crear una hoja de cálculo para almacenar los resultados y llenar los datos personales del estudiante antes de que pueda responder la prueba.
Este documento describe las diferentes etapas del desarrollo humano desde la etapa prenatal hasta la ancianidad. Explica las características de cada etapa, incluyendo cambios físicos, cognitivos y emocionales. El objetivo es ayudar a las personas a entender mejor las etapas por las que todos pasamos a lo largo de la vida. Se basa en información de páginas web sobre el tema del desarrollo humano.
The document discusses 21st century skills and how to develop them for improved teaching and learning. It identifies critical thinking, problem solving, creativity, communication, collaboration, and information and communications technology literacy as key 21st century skills. Examples are provided of how these skills can be incorporated into classroom activities and instruction, such as having students work in teams to solve problems, make presentations using different media, and complete project-based learning. The document emphasizes that education must focus on developing skills like critical thinking that will allow students to continuously learn and adapt to new information and technologies in the future.
The document discusses the use of management information systems (MIS) at AB Bank Limited in Bangladesh. It provides an overview of the bank and describes how MIS is used across various departments. The objectives are to identify the components of the existing MIS, problems with the current system, and information sources. Recommendations will be made to improve how MIS is utilized at AB Bank Limited.
This document discusses software metrics and how they can be used to measure various attributes of software products and processes. It begins by asking questions that software metrics can help answer, such as how to measure software size, development costs, bugs, and reliability. It then provides definitions of key terms like measurement, metrics, and defines software metrics as the application of measurement techniques to software development and products. The document outlines areas where software metrics are commonly used, like cost estimation and quality/reliability prediction. It also discusses challenges in implementing metrics and provides categories of metrics like product, process, and project metrics. The remainder of the document provides examples and formulas for specific software metrics.
This document discusses people-empowered planning in education. It defines key terms like empowerment, community participation, planning, and participatory planning. It explains that participatory planning in education involves representatives from students, teachers, administrators, decision-makers, parents/guardians, and organizations. The planning process should include briefing local leaders, conducting orientation sessions, forming committees, and creating simple manuals and plans. Benefits of participatory planning include increased relevance and quality of education, while doubts relate to efficiency, conflict, and loss of authority. Beneficiary participation in projects ranges from consultation to collaboration to full enterprise.
it's about new business plan of green coconut. here specially show the cost sheet that help new entrepreneur to come to this business. Here also show the break even chart that is more important for sustaining in the market rather than making profit.
A microprogrammed control unit stores control signals for executing instructions in a control memory rather than using dedicated logic. It has four main components: 1) a control memory that stores microinstructions specifying microoperations, 2) a control address register that selects microinstructions, 3) a sequencer that generates the next address, and 4) a pipeline register that holds the selected microinstruction. Microprograms are sequences of microinstructions that are executed to carry out machine-level instructions. Microinstructions can implement conditional branching to alter the control flow.
The document discusses control structures in Java, including selection (if/else statements), repetition (loops like while and for), and branching (break and continue). It provides examples of if/else, switch, while, do-while, for, and break/continue statements. The key structures allow sequencing, selecting between alternatives, and repeating actions in a program.
La conferencia presentó un proyecto matemático para estudiantes de grado 7o en el que participarían los profesores Arnovia Gómez y Jairo Segundo Inagan. Se explicaron los objetivos del proyecto y padres de familia dieron su apoyo. Los estudiantes participaron leyendo objetivos y resolvieron ejercicios matemáticos en grupos.
El documento describe una conferencia de matemáticas en la que estudiantes del séptimo grado recibieron ejercicios de la profesora Arnovia Gómez. Los estudiantes comenzaron a desarrollar los ejercicios con la ayuda del profesor Jairo, y luego varios representantes explicaron sus soluciones en el tablero. La profesora Arnovia luego explicó los ejercicios resueltos por los estudiantes.
El documento describe el mantenimiento de tabletas realizado por estudiantes en la Institución Educativa Municipal Luis Eduardo Mora Osejo en Colombia. Los estudiantes limpiaron, enumeraron y cargaron las tabletas para luego entregarlas a los niños de cuarto grado, quienes se muestran manejando las tabletas después de recibirlas. El documento incluye créditos a los estudiantes y docente involucrados, así como los softwares utilizados.
Halsted’s Software Science-An analytical techniqueNur Islam
Halstead's software science is an analytical estimation method that uses simple assumptions and program parameters like unique operators, unique operands, total operators, and total operands to estimate properties of a program like overall length, potential minimum volume, actual volume, effort required, and development time. It defines terms like program vocabulary, program length, program volume, potential program volume, program level, and uses equations involving these terms to estimate effort and length of a program based on the counts of unique operators and operands.
The article describes 7 types of metrics and more than 50 their representatives, provides a detailed description and calculation algorithms used. It also touches upon the role of metrics in software development.
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4. INTRO (cont’d)
Halstead used few primitive program parameters to develop expressions for:
● Overall program length
● Potential minimum volume and Program level
● Actual volume
● Effort
● Development time
5. INTRO (cont’d)
For any giving programs lets define the following parameters:
● η1
be the number of unique operators used in the program
● η2
be the number of unique operands used in the program
● N1
be the number of the total operators used in the program
● N2
be the number of the total operands used in the program
6. INTRO (cont’d)
Operator in general: a symbol or function representing a mathematical
operation.
● assignments arithmetic and logical operators
● Parentheses pair, block begin/end pair
● If…then… else… endif
● Do…. While
● Statement terminator “;”
● Bitwise operator
● Pointers operator
7. INTRO (cont’d)
Operands in general: A quantity to which an operator is applied
● Subroutine declarations
● Variable declarations
● Variables and constants used with operators in an expression
8. Operators and Operands for the ANSI C Language
● List of operators
( [ . , -> * + - ~ ! ++ -- * / % + - << >> < > <= >= != == & ^ | && ||
= *= /= %= += -= <<= >>= &= ^= |= : ? { ; CASE DEFAULT IF ELSE SWITCH
WHILE DO FOR GOTO CONTINUE BREAK RETURN and a function name in
function call
● Operands are those variables and constants which are used with
operators in expressions
Eg : a=&b;
a,b are operands and = & are operators
9. Length and Vocabulary
● Length : total usage of all operators and operands ie., total number of
tokens used in the program
Program Length (N)= N1
+ N2
● Vocabulary : is the number unique operands and operators used in the
program
Program Vocabulary (η)= η1
+ η2
10. Program Volume
● Program vocabulary and length depends on the programming style
● Different lengths of programs, corresponding to the same problem when
different languages are used
● We need to express the program length by taking the programming
language into consideration
Program volume (V) is the minimum number of bits needed to encode the
program
11. Program Volume (cont’d)
Program volume V = N log2
(η)
● To represent η different tokens we need log2
(η) bits
○ Example: to represent 8 operands we need 3 bits
● For a program of N length, we need N log2
(η) bits
Program volume represents the size of the program by approximately
compensating the effect of the programming language used
12. Potential Minimum Volume (V*)
● V* is the volume of the most concise program in which the problem can
be coded
● A program require at least 2 operators (η1
=2) and the required number of
operands is η2
=n
V* = (2+η2
) log2
(2+η2
)
13. Potential Minimum Volume (V*) (cont’d)
Program Level (L) = V*/V
● Program level measures the level of abstraction provided by
programming language
● Higher L, less effort it takes to develop a program using that language
○ Example: Assembly vs. C#
14. Effort and Time
● To obtain the needed effort , we divide the program volume (size) on the
program level (complexity)
Effort (E) = V / L
= V2
/ V* (as L = V*/V)
● The programmer’s time needed to finish the program
T = E / S
where S is the speed of mental discriminations, recommended value of S
is 18
15. Length Estimation
● Although the program length can be estimated easily using the previous
discussed equation N = N1
+N2
, this can be done before starting the
programming activities.
● Instead, we can calculate the length depending on the unique numbers of
operands and operators
16. Length Estimation (cont’d)
Halstead assumptions are based on:
● Program are unlikely to have several identical parts that are greater than
(η)
● Identical parts are usually made into procedures and functions
N = η1
log2
(η1
) + η2
log2
(η2
)
● Experimental evidence showed that the actual and the computed values
are very close
● Results may be inaccurate when dealing with small programs or
subsystems individually
17. Recap
● Unique operators : η1
● Unique Operands : η2
● Total Operators : N1
● Total Operands : N2
● Program Vocabulary: η=η1
+η2
● Program Length : N=N1
+N2
● Program Volume : Nlog2
η
● Effort : E=V/L
● Time : T=E/S
● Estimated Length : N=η1
log2
η1
+η2
log2
η2
18. Example
Main()
{
int a, b, c, avg;
scanf(“%d %d %d”, &a, &b, &c);
avg = (a +b +c )/3;
printf(“avg = %d”, avg);
}
19. Example (cont’d)
● The unique operators are: main, (), {}, int, scanf, &, “, “, “ ; ”, =, +, /, printf
● The unique operands are : a, b, c, &a, &b, &c, a +b +c, avg, 3, “%d %d %d”,
“avg = %d”
therefore η1 = 12, η2 = 11
N = 12 log2(12)+ 11log2(11) = 81
V = Nlog2(η) = 81log2(23) = 366