This document discusses light waves and optics. It begins by defining key terms like wavelength, frequency, and speed of light. Light waves travel more slowly in materials than a vacuum. The index of refraction is defined as the ratio of the speed of light in a vacuum to its speed in a material. Refraction occurs when light waves change direction as they pass from one material to another with a different index of refraction. Common materials and their indices of refraction are listed in a table.
The document provides an overview of spectrophotometry and different types of spectrophotometers. It discusses how spectrophotometers work by using properties of light and its interaction with substances to determine presence or concentration. The key components of spectrophotometers are described including light sources, monochromators, sample holders, detectors, and reading systems. Different spectrophotometer types are examined such as colorimeters, flame photometers, and their measurement processes.
This document outlines the syllabus breakdown for the O Level Physics class of O2 for the first and second terms. It includes topics, subtopics, learning objectives, and the number of weeks allocated for each topic. Some of the main topics covered are temperature, thermal properties of matter, waves, light, sound, and static electricity. The learning objectives describe key concepts to be learned for each topic, such as describing thermometers, calculating heat transfer during phase changes, explaining wave properties and behaviors, and outlining the laws of electrostatics. Revision is allocated time at the end of each term.
The document summarizes research determining the optical constants and thickness of tin oxide (SnO2) thin films. Ellipsometry was used to measure the delta and psi values of the thin film coated on a glass substrate. Software analysis of the ellipsometry data found the refractive index of the SnO2 film to be 1.517 and the thickness to be 250 nm. Additional modeling of the complex dielectric function was also discussed to better understand the optical properties of conductive thin films like SnO2.
This document is a 38-page seminar report on spectroscopy submitted by two students, Arpit Modh and Parth Kasodariya. It includes an introduction to spectroscopy, descriptions of various spectroscopy techniques like atomic absorption spectroscopy, infrared absorption spectroscopy, and ultraviolet-visible spectroscopy. The report covers principles, instrumentation, applications, and more for different spectroscopy methods. It aims to provide a basic review of spectroscopy and its uses in various important fields like structure analysis.
Laser Physics Department -ALNeelain University 5 thGazy Khatmi
The document discusses a new approach for laser surgery and cancer treatment using COMSOL Multiphysics simulation software. Physicians would be able to specify various parameters like tissue type, tumor size, laser properties, and treatment time to simulate scenarios. COMSOL would then be developed into an app for physicians to access and run simulations remotely on their laptops or smartphones. This would allow physicians to interactively plan laser procedures digitally before performing treatments.
NOVEL METHODOLOGY OF THE ULTRA SONIC BEAM IN LINEAR ARRAY TRANSDUCER FOR HIGH...Journal For Research
In this paper, the focusing of ultrasound beam is considered. Electronic circuitry is considered as support to the theme of the work. The results presented in this paper are notable for improved resolution. The extension of the application diversity is also proposed based on use of Piezo electric transceducers.
This document provides an introduction to radiographic testing (RT). It discusses how RT works by exposing test objects to radiation like X-rays to produce images. RT is used to inspect items like castings and welds. Advantages include the ability to test most materials and provide permanent records, but it has limitations like requiring access to both sides and difficulty detecting some discontinuities. The document also covers safety considerations, personnel qualifications, testing principles like penetration and image quality, and the physics of X-ray and gamma radiation production.
The document provides an overview of spectrophotometry and different types of spectrophotometers. It discusses how spectrophotometers work by using properties of light and its interaction with substances to determine presence or concentration. The key components of spectrophotometers are described including light sources, monochromators, sample holders, detectors, and reading systems. Different spectrophotometer types are examined such as colorimeters, flame photometers, and their measurement processes.
This document outlines the syllabus breakdown for the O Level Physics class of O2 for the first and second terms. It includes topics, subtopics, learning objectives, and the number of weeks allocated for each topic. Some of the main topics covered are temperature, thermal properties of matter, waves, light, sound, and static electricity. The learning objectives describe key concepts to be learned for each topic, such as describing thermometers, calculating heat transfer during phase changes, explaining wave properties and behaviors, and outlining the laws of electrostatics. Revision is allocated time at the end of each term.
The document summarizes research determining the optical constants and thickness of tin oxide (SnO2) thin films. Ellipsometry was used to measure the delta and psi values of the thin film coated on a glass substrate. Software analysis of the ellipsometry data found the refractive index of the SnO2 film to be 1.517 and the thickness to be 250 nm. Additional modeling of the complex dielectric function was also discussed to better understand the optical properties of conductive thin films like SnO2.
This document is a 38-page seminar report on spectroscopy submitted by two students, Arpit Modh and Parth Kasodariya. It includes an introduction to spectroscopy, descriptions of various spectroscopy techniques like atomic absorption spectroscopy, infrared absorption spectroscopy, and ultraviolet-visible spectroscopy. The report covers principles, instrumentation, applications, and more for different spectroscopy methods. It aims to provide a basic review of spectroscopy and its uses in various important fields like structure analysis.
Laser Physics Department -ALNeelain University 5 thGazy Khatmi
The document discusses a new approach for laser surgery and cancer treatment using COMSOL Multiphysics simulation software. Physicians would be able to specify various parameters like tissue type, tumor size, laser properties, and treatment time to simulate scenarios. COMSOL would then be developed into an app for physicians to access and run simulations remotely on their laptops or smartphones. This would allow physicians to interactively plan laser procedures digitally before performing treatments.
NOVEL METHODOLOGY OF THE ULTRA SONIC BEAM IN LINEAR ARRAY TRANSDUCER FOR HIGH...Journal For Research
In this paper, the focusing of ultrasound beam is considered. Electronic circuitry is considered as support to the theme of the work. The results presented in this paper are notable for improved resolution. The extension of the application diversity is also proposed based on use of Piezo electric transceducers.
This document provides an introduction to radiographic testing (RT). It discusses how RT works by exposing test objects to radiation like X-rays to produce images. RT is used to inspect items like castings and welds. Advantages include the ability to test most materials and provide permanent records, but it has limitations like requiring access to both sides and difficulty detecting some discontinuities. The document also covers safety considerations, personnel qualifications, testing principles like penetration and image quality, and the physics of X-ray and gamma radiation production.
This document provides an introduction to analyzing signals in the time, frequency, and modal domains. It discusses:
1) The time domain directly records how a parameter varies over time, while the frequency domain represents a signal as the sum of its sine wave components.
2) Analyzing signals in the frequency domain can make it easier to detect small signals masked by large ones, as components are separated. Instruments like dynamic signal analyzers are useful for frequency domain analysis.
3) Examples show that a sine wave has a single frequency component, while square waves and transients have multiple components. The spectrum of an impulse is flat, containing all frequencies.
The document discusses stress, strain, and Hooke's law in the context of aircraft design and construction. It defines stress as a load applied to a unit area of material, which produces a deformation called strain. Stress is always accompanied by strain. Modern aircraft are constructed primarily of aluminum alloys, held together with rivets, bolts, screws, and adhesives. Structural integrity is essential for aircraft and every component is analyzed for stresses and maximum capability.
Design, Electrostatic and Eigen Frequency Analysis of Fixed– Fixed Beam MEMS ...IOSR Journals
The objective of this paper is to design of fixed–fixed MEMS Resonator. The beam of resonator is
made up of poly-silicon. This paper also presents the electrostatic and Eigen frequency analysis of MEMS
resonator. The resonator used in oscillator which can be fabricated on chip. It can also be used as Switch. The
size of crystal oscillator is in order of centimeter but the size of MEMS Resonator is in order of microns, so by
replace a crystal oscillator by MEMS Resonator, we can reduce the size of the system. The dc voltage is given to
the beam of resonator for electrostatic analysis & Eigen frequency analysis in different modes
Design, Electrostatic and Eigen Frequency Analysis of Fixed–Fixed Beam MEMS R...IOSR Journals
This document describes the design, electrostatic analysis, and eigenfrequency analysis of a fixed-fixed beam MEMS resonator using COMSOL Multiphysics software. The resonator is made of poly-silicon with dimensions of 50um length, 10um width, and 2um thickness. Electrostatic analysis shows the pull-down voltage is achieved at a displacement of 2/3 the initial gap. Eigenfrequency analysis reveals 6 vibration modes with fundamental frequency of 7.09MHz and higher frequencies up to 71.55MHz, following the expected relationship between frequency and beam dimensions. The resonator could enable miniaturized oscillators for various applications.
The document is a daily lesson log for a Grade 11 physics class. It outlines the objectives, content, learning resources, and procedures for four class periods on the topics of:
1) Alternating current, LC circuits and their applications (Day 1)
2) Electric charge, Coulomb's law, and electric fields and flux (Day 2)
3) Reflection, refraction, total internal reflection, and applications of geometric optics (Day 3)
4) Reflection, refraction, dispersion, and polarization (Day 4)
The log provides details on the standards, competencies, examples, group activities, and concepts that will be discussed to teach the physics principles for each day.
The document presents a table of specification for a physics test. It lists 3 units covering electromagnetic waves, optics, and electricity & magnetism. For each learning competency, it specifies the number of days taught, the percentage and number of test items. Most items (60%) will focus on remembering and understanding, 30% on applying and analyzing, and 10% on evaluating and creating. The table provides a framework to ensure test content is distributed proportionally according to the curriculum coverage and cognitive demand.
The document discusses spectrophotometry, which uses spectrophotometers to measure how light interacts with a sample. It describes how spectrophotometers work by passing light through a sample and measuring the light intensity. The document outlines the basic principles, including the Beer-Lambert law which states that absorbance is proportional to concentration and path length. Different types of spectrophotometers are identified and their applications discussed, such as quantification of compounds and quality control.
Infrared image enhancement using wavelet transformAlexander Decker
This document summarizes an article about enhancing infrared images using wavelet transforms. It discusses how wavelet transforms can be used to separate image details into different frequency subbands. Then a homomorphic enhancement algorithm is applied to transform the details into illumination and reflectance components, amplifying the reflectance to make details more clear. Finally, an inverse wavelet transform is performed to reconstruct an enhanced infrared image with more visible details. The document provides background on infrared imaging and different infrared bands. It also reviews literature on using wavelets for target detection by exploiting scale, edge, and contrast differences between targets and clutter.
Quantum Mechanics information imoortant.pptxXigfonSqitro
This document provides an overview of a course on quantum mechanics for engineering students. The course objectives are to make students industry-ready by teaching them basic concepts and applications of advanced engineering physics. Students will learn about fundamental concepts like lasers, optical fibers, crystallography, and quantum mechanics. Specifically, they will learn about phase and group velocity, how the concepts arise from the need to reconcile classical physics with relativity and quantum theory, and the relationship between phase and group velocity. The course aims to enhance students' skills so they can solve problems and develop systems using concepts taught in the course for future applications.
Electrons fill orbitals according to the Aufbau principle and Hund's rule:
- Aufbau principle states that electrons fill orbitals of the lowest energy first before occupying higher energy orbitals.
- Hund's rule states that in degenerate orbitals (same energy), electrons occupy orbitals singly with parallel spins before pairing.
So the ground state electron configuration is the lowest energy arrangement according to these principles.
EDM & GPS Surveys. Topographical, elevation and building surveys We Measure – What?
Linear
Angular
Modern Equipments
Requirements
Accuracy
Functionality
Integration
Productivity
Ease of Use
Optical Phenomena related to Optometric Optics (Reflection, Refraction, Interference, Diffraction, Polarisation) and also their Optometric Uses or their uses in the Optometry Field
Optical Phenomena related to Optometric Optics (Reflection, Refraction, Interference, Diffraction, Polarisation) and also their Optometric Uses or their uses in the Optometry Field
The document outlines the daily lesson plan for a unit on the electromagnetic spectrum. It includes objectives, content, learning resources, procedures, activities, and assessments for lessons covering topics like radio waves, infrared, ultraviolet, visible light, microwaves, x-rays, and gamma rays. The lessons involve experiments, group work, discussions, and short quizzes to help students understand the different types of electromagnetic waves and their characteristics and applications.
This document provides an introduction to spectroscopic methods of analysis. It defines spectroscopy as the study of interactions between electromagnetic radiation and matter. It describes the wave and particle properties of electromagnetic radiation and defines key terms related to waves like wavelength, frequency, speed of light. It discusses the components of optical instruments for spectroscopy including sources of radiation, wavelength selectors, radiation transducers, and signal processors. It also explains the differences between atomic and molecular transitions and different types of spectra.
This document discusses voltammetry, an electroanalytical technique used in qualitative and quantitative analytical chemistry. It introduces the basic concepts and principles of voltammetry, including instrumentation, excitation signals, types of voltammetry, and features of voltammograms. Specifically, it discusses the fundamentals of voltammetric cells, electrodes, hydrodynamic voltammetry, and common shapes of voltammograms including linear scan and peak voltammograms. The overall purpose is to explain the fundamental concepts and applications of voltammetry as an analytical technique.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document discusses wave motion and resonance. It defines transverse and longitudinal waves, progressive and stationary waves, and key wave parameters like amplitude, wavelength, frequency, and speed. It presents the wave formula that relates wavelength, frequency and speed. Resonance is described as occurring when the frequency of an oscillating body matches the natural frequency of vibration of a cord or string, causing large amplitude vibrations. Diagrams show normal modes of vibration on a cord with different wavelengths corresponding to the index of the mode.
This document provides an introduction to analyzing signals in the time, frequency, and modal domains. It discusses:
1) The time domain directly records how a parameter varies over time, while the frequency domain represents a signal as the sum of its sine wave components.
2) Analyzing signals in the frequency domain can make it easier to detect small signals masked by large ones, as components are separated. Instruments like dynamic signal analyzers are useful for frequency domain analysis.
3) Examples show that a sine wave has a single frequency component, while square waves and transients have multiple components. The spectrum of an impulse is flat, containing all frequencies.
The document discusses stress, strain, and Hooke's law in the context of aircraft design and construction. It defines stress as a load applied to a unit area of material, which produces a deformation called strain. Stress is always accompanied by strain. Modern aircraft are constructed primarily of aluminum alloys, held together with rivets, bolts, screws, and adhesives. Structural integrity is essential for aircraft and every component is analyzed for stresses and maximum capability.
Design, Electrostatic and Eigen Frequency Analysis of Fixed– Fixed Beam MEMS ...IOSR Journals
The objective of this paper is to design of fixed–fixed MEMS Resonator. The beam of resonator is
made up of poly-silicon. This paper also presents the electrostatic and Eigen frequency analysis of MEMS
resonator. The resonator used in oscillator which can be fabricated on chip. It can also be used as Switch. The
size of crystal oscillator is in order of centimeter but the size of MEMS Resonator is in order of microns, so by
replace a crystal oscillator by MEMS Resonator, we can reduce the size of the system. The dc voltage is given to
the beam of resonator for electrostatic analysis & Eigen frequency analysis in different modes
Design, Electrostatic and Eigen Frequency Analysis of Fixed–Fixed Beam MEMS R...IOSR Journals
This document describes the design, electrostatic analysis, and eigenfrequency analysis of a fixed-fixed beam MEMS resonator using COMSOL Multiphysics software. The resonator is made of poly-silicon with dimensions of 50um length, 10um width, and 2um thickness. Electrostatic analysis shows the pull-down voltage is achieved at a displacement of 2/3 the initial gap. Eigenfrequency analysis reveals 6 vibration modes with fundamental frequency of 7.09MHz and higher frequencies up to 71.55MHz, following the expected relationship between frequency and beam dimensions. The resonator could enable miniaturized oscillators for various applications.
The document is a daily lesson log for a Grade 11 physics class. It outlines the objectives, content, learning resources, and procedures for four class periods on the topics of:
1) Alternating current, LC circuits and their applications (Day 1)
2) Electric charge, Coulomb's law, and electric fields and flux (Day 2)
3) Reflection, refraction, total internal reflection, and applications of geometric optics (Day 3)
4) Reflection, refraction, dispersion, and polarization (Day 4)
The log provides details on the standards, competencies, examples, group activities, and concepts that will be discussed to teach the physics principles for each day.
The document presents a table of specification for a physics test. It lists 3 units covering electromagnetic waves, optics, and electricity & magnetism. For each learning competency, it specifies the number of days taught, the percentage and number of test items. Most items (60%) will focus on remembering and understanding, 30% on applying and analyzing, and 10% on evaluating and creating. The table provides a framework to ensure test content is distributed proportionally according to the curriculum coverage and cognitive demand.
The document discusses spectrophotometry, which uses spectrophotometers to measure how light interacts with a sample. It describes how spectrophotometers work by passing light through a sample and measuring the light intensity. The document outlines the basic principles, including the Beer-Lambert law which states that absorbance is proportional to concentration and path length. Different types of spectrophotometers are identified and their applications discussed, such as quantification of compounds and quality control.
Infrared image enhancement using wavelet transformAlexander Decker
This document summarizes an article about enhancing infrared images using wavelet transforms. It discusses how wavelet transforms can be used to separate image details into different frequency subbands. Then a homomorphic enhancement algorithm is applied to transform the details into illumination and reflectance components, amplifying the reflectance to make details more clear. Finally, an inverse wavelet transform is performed to reconstruct an enhanced infrared image with more visible details. The document provides background on infrared imaging and different infrared bands. It also reviews literature on using wavelets for target detection by exploiting scale, edge, and contrast differences between targets and clutter.
Quantum Mechanics information imoortant.pptxXigfonSqitro
This document provides an overview of a course on quantum mechanics for engineering students. The course objectives are to make students industry-ready by teaching them basic concepts and applications of advanced engineering physics. Students will learn about fundamental concepts like lasers, optical fibers, crystallography, and quantum mechanics. Specifically, they will learn about phase and group velocity, how the concepts arise from the need to reconcile classical physics with relativity and quantum theory, and the relationship between phase and group velocity. The course aims to enhance students' skills so they can solve problems and develop systems using concepts taught in the course for future applications.
Electrons fill orbitals according to the Aufbau principle and Hund's rule:
- Aufbau principle states that electrons fill orbitals of the lowest energy first before occupying higher energy orbitals.
- Hund's rule states that in degenerate orbitals (same energy), electrons occupy orbitals singly with parallel spins before pairing.
So the ground state electron configuration is the lowest energy arrangement according to these principles.
EDM & GPS Surveys. Topographical, elevation and building surveys We Measure – What?
Linear
Angular
Modern Equipments
Requirements
Accuracy
Functionality
Integration
Productivity
Ease of Use
Optical Phenomena related to Optometric Optics (Reflection, Refraction, Interference, Diffraction, Polarisation) and also their Optometric Uses or their uses in the Optometry Field
Optical Phenomena related to Optometric Optics (Reflection, Refraction, Interference, Diffraction, Polarisation) and also their Optometric Uses or their uses in the Optometry Field
The document outlines the daily lesson plan for a unit on the electromagnetic spectrum. It includes objectives, content, learning resources, procedures, activities, and assessments for lessons covering topics like radio waves, infrared, ultraviolet, visible light, microwaves, x-rays, and gamma rays. The lessons involve experiments, group work, discussions, and short quizzes to help students understand the different types of electromagnetic waves and their characteristics and applications.
This document provides an introduction to spectroscopic methods of analysis. It defines spectroscopy as the study of interactions between electromagnetic radiation and matter. It describes the wave and particle properties of electromagnetic radiation and defines key terms related to waves like wavelength, frequency, speed of light. It discusses the components of optical instruments for spectroscopy including sources of radiation, wavelength selectors, radiation transducers, and signal processors. It also explains the differences between atomic and molecular transitions and different types of spectra.
This document discusses voltammetry, an electroanalytical technique used in qualitative and quantitative analytical chemistry. It introduces the basic concepts and principles of voltammetry, including instrumentation, excitation signals, types of voltammetry, and features of voltammograms. Specifically, it discusses the fundamentals of voltammetric cells, electrodes, hydrodynamic voltammetry, and common shapes of voltammograms including linear scan and peak voltammograms. The overall purpose is to explain the fundamental concepts and applications of voltammetry as an analytical technique.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document discusses wave motion and resonance. It defines transverse and longitudinal waves, progressive and stationary waves, and key wave parameters like amplitude, wavelength, frequency, and speed. It presents the wave formula that relates wavelength, frequency and speed. Resonance is described as occurring when the frequency of an oscillating body matches the natural frequency of vibration of a cord or string, causing large amplitude vibrations. Diagrams show normal modes of vibration on a cord with different wavelengths corresponding to the index of the mode.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...shadow0702a
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
An improved modulation technique suitable for a three level flying capacitor ...IJECEIAES
This research paper introduces an innovative modulation technique for controlling a 3-level flying capacitor multilevel inverter (FCMLI), aiming to streamline the modulation process in contrast to conventional methods. The proposed
simplified modulation technique paves the way for more straightforward and
efficient control of multilevel inverters, enabling their widespread adoption and
integration into modern power electronic systems. Through the amalgamation of
sinusoidal pulse width modulation (SPWM) with a high-frequency square wave
pulse, this controlling technique attains energy equilibrium across the coupling
capacitor. The modulation scheme incorporates a simplified switching pattern
and a decreased count of voltage references, thereby simplifying the control
algorithm.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...IJECEIAES
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Sinan KOZAK
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
Null Bangalore | Pentesters Approach to AWS IAMDivyanshu
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
Rainfall intensity duration frequency curve statistical analysis and modeling...bijceesjournal
Using data from 41 years in Patna’ India’ the study’s goal is to analyze the trends of how often it rains on a weekly, seasonal, and annual basis (1981−2020). First, utilizing the intensity-duration-frequency (IDF) curve and the relationship by statistically analyzing rainfall’ the historical rainfall data set for Patna’ India’ during a 41 year period (1981−2020), was evaluated for its quality. Changes in the hydrologic cycle as a result of increased greenhouse gas emissions are expected to induce variations in the intensity, length, and frequency of precipitation events. One strategy to lessen vulnerability is to quantify probable changes and adapt to them. Techniques such as log-normal, normal, and Gumbel are used (EV-I). Distributions were created with durations of 1, 2, 3, 6, and 24 h and return times of 2, 5, 10, 25, and 100 years. There were also mathematical correlations discovered between rainfall and recurrence interval.
Findings: Based on findings, the Gumbel approach produced the highest intensity values, whereas the other approaches produced values that were close to each other. The data indicates that 461.9 mm of rain fell during the monsoon season’s 301st week. However, it was found that the 29th week had the greatest average rainfall, 92.6 mm. With 952.6 mm on average, the monsoon season saw the highest rainfall. Calculations revealed that the yearly rainfall averaged 1171.1 mm. Using Weibull’s method, the study was subsequently expanded to examine rainfall distribution at different recurrence intervals of 2, 5, 10, and 25 years. Rainfall and recurrence interval mathematical correlations were also developed. Further regression analysis revealed that short wave irrigation, wind direction, wind speed, pressure, relative humidity, and temperature all had a substantial influence on rainfall.
Originality and value: The results of the rainfall IDF curves can provide useful information to policymakers in making appropriate decisions in managing and minimizing floods in the study area.