All About Earth (Core to Crust; Includes Facts; Q/A & much more) Arnold_Anand
This presentation is made in power point 2016.with lots of exciting transitions and animation. With loads of information and pictures.Helpful for students in classes 8,9,10 in social studies (SSC syllabus)
The Earth is made up of four main layers from outermost to innermost - the crust, mantle, outer core and inner core. The crust is the thinnest solid rock layer on top, while the thick mantle below is made of semi-molten rock and metal. Within this lies the outer core of fully molten metal like iron, and deepest is the inner solid metal core.
The document describes the four main layers of Earth: crust, mantle, outer core, and inner core. The crust is the thinnest layer and is divided into continental and oceanic crust. Below the crust is the mantle, which makes up over 80% of Earth's volume and is composed of iron-rich rock. Within the mantle are the lithosphere and asthenosphere layers. The outer core is liquid, while the inner core is solid due to extreme pressure. Seismic waves have helped scientists determine the composition of Earth's layers.
The document summarizes key facts about the four inner planets of our solar system: Mercury, Venus, Earth, and Mars. It provides details on each planet's diameter, mass, density, atmosphere, distance from the sun, orbital path, moons, surface features, and core composition. Notably, it describes Mercury as the closest planet to the sun with no moons and a heavily cratered surface. Venus is similar in size to Earth but has a dense carbon dioxide atmosphere and retrograde rotation. Earth is unique in its liquid water and life. Mars has the largest volcano in the solar system called Olympus Mons and two small moons.
The document summarizes the structure and composition of Earth's interior. It has four main layers from innermost to outermost - the solid inner core made of iron and nickel, the liquid outer core also made of iron and nickel, the solid mantle made of iron, silicon and magnesium minerals, and the rigid outer crust made of lighter rock. Temperature and pressure increase from the crust towards the core. The crust is thinnest under oceans and thickest under mountains.
The Earth is divided into three main layers - the crust, mantle, and core - based on their composition.
The crust is the outermost layer and exists as either oceanic or continental crust. Below the crust lies the mantle, which is thick and composed of heavier minerals. The core is at the center and consists of a solid inner core surrounded by a liquid outer core.
The paper presents a fundamental study of the polymer flow within a “wave” type screw channel. The analysis is performed on an “unwrapped” form of a conventional screw channel and a “wave” type channel of similar size. A 3D Finite Element Method
(FEM) simulation was used to simulate the flow field and flow characteristics of the wave channel are compared relative to the plain channel.
Single sideband modulation is more spectrally efficient than double sideband modulation by transmitting only one sideband. In single sideband modulation, there is a 90 degree phase offset between the sine and cosine signals. In practice, I/Q imbalance and carrier leakage are inevitable due to imperfections in the I/Q modulator and DC offsets. I/Q imbalance results in an undesired sideband and constellation distortion, degrading modulation accuracy. Carrier leakage arises from LO leakage and DC offsets, degrading SNR. Techniques like calibration circuits, balanced mixing, and adjusting I/Q gains/offsets can help minimize these impairments.
All About Earth (Core to Crust; Includes Facts; Q/A & much more) Arnold_Anand
This presentation is made in power point 2016.with lots of exciting transitions and animation. With loads of information and pictures.Helpful for students in classes 8,9,10 in social studies (SSC syllabus)
The Earth is made up of four main layers from outermost to innermost - the crust, mantle, outer core and inner core. The crust is the thinnest solid rock layer on top, while the thick mantle below is made of semi-molten rock and metal. Within this lies the outer core of fully molten metal like iron, and deepest is the inner solid metal core.
The document describes the four main layers of Earth: crust, mantle, outer core, and inner core. The crust is the thinnest layer and is divided into continental and oceanic crust. Below the crust is the mantle, which makes up over 80% of Earth's volume and is composed of iron-rich rock. Within the mantle are the lithosphere and asthenosphere layers. The outer core is liquid, while the inner core is solid due to extreme pressure. Seismic waves have helped scientists determine the composition of Earth's layers.
The document summarizes key facts about the four inner planets of our solar system: Mercury, Venus, Earth, and Mars. It provides details on each planet's diameter, mass, density, atmosphere, distance from the sun, orbital path, moons, surface features, and core composition. Notably, it describes Mercury as the closest planet to the sun with no moons and a heavily cratered surface. Venus is similar in size to Earth but has a dense carbon dioxide atmosphere and retrograde rotation. Earth is unique in its liquid water and life. Mars has the largest volcano in the solar system called Olympus Mons and two small moons.
The document summarizes the structure and composition of Earth's interior. It has four main layers from innermost to outermost - the solid inner core made of iron and nickel, the liquid outer core also made of iron and nickel, the solid mantle made of iron, silicon and magnesium minerals, and the rigid outer crust made of lighter rock. Temperature and pressure increase from the crust towards the core. The crust is thinnest under oceans and thickest under mountains.
The Earth is divided into three main layers - the crust, mantle, and core - based on their composition.
The crust is the outermost layer and exists as either oceanic or continental crust. Below the crust lies the mantle, which is thick and composed of heavier minerals. The core is at the center and consists of a solid inner core surrounded by a liquid outer core.
The paper presents a fundamental study of the polymer flow within a “wave” type screw channel. The analysis is performed on an “unwrapped” form of a conventional screw channel and a “wave” type channel of similar size. A 3D Finite Element Method
(FEM) simulation was used to simulate the flow field and flow characteristics of the wave channel are compared relative to the plain channel.
Single sideband modulation is more spectrally efficient than double sideband modulation by transmitting only one sideband. In single sideband modulation, there is a 90 degree phase offset between the sine and cosine signals. In practice, I/Q imbalance and carrier leakage are inevitable due to imperfections in the I/Q modulator and DC offsets. I/Q imbalance results in an undesired sideband and constellation distortion, degrading modulation accuracy. Carrier leakage arises from LO leakage and DC offsets, degrading SNR. Techniques like calibration circuits, balanced mixing, and adjusting I/Q gains/offsets can help minimize these impairments.
This report summarizes a computational simulation of the solidification behavior of a eutectic system in response to changes in pulling velocity. A phase field model was developed to simulate the solidification dynamics when increasing or decreasing the pulling velocity of a thin succinonitrile–(D)camphor film. The model was improved by increasing the domain size to include multiple alternating layers, adding a function to change the pulling velocity during solidification, and utilizing a shift function to increase computational efficiency. Simulation results showed changes in lamellar spacing and solidification behavior consistent with experimental observations of a similar system when increasing or decreasing the pulling velocity.
Investigation of Supercavitation PhysicsSiyao Shao
1. The document summarizes an investigation into supercavitation physics conducted in two laboratories. It included studies of ventilated cavitation, configuration effects, and a comparison of ventilated and natural supercavitation.
2. Key findings included that results from the two laboratories for ventilated cavitation agreed well, and that a backward facing model provided better visualization of natural supercavitation compared to a forward facing model.
3. The formation and evolution of natural supercavitation was observed, including four stages of cavity development. Choking behavior, where cavity size remains constant despite pressure changes, was demonstrated and used to measure minimum cavitation numbers.
This document summarizes a study using Star-CCM+ software to model microfluidic flows. Single-phase flow in rectangular and circular microchannels was modeled and validated against analytical solutions. Droplet formation in a microfluidic T-junction and flow focusing device was also modeled using the volume of fluid method. High spurious currents were observed at fluid interfaces with coarse meshes. Adaptive mesh refinement was employed for the flow focusing device to minimize currents and sharpen interfaces, improving the model.
This document discusses flow nets, which are used to analyze seepage problems in soil mechanics. It covers:
1. Common boundary conditions like impermeable boundaries which are modeled as flow lines and submerged boundaries which are equipotentials.
2. Procedures for drawing flow nets including satisfying boundary conditions and creating a square mesh.
3. Using flow nets to calculate quantities of interest like flow and pore water pressure by relating the number of flow tubes and equipotentials.
4. Examples of applying flow nets to problems like seepage under a dam or stranded vessel rescue.
This document discusses flow nets, which are used to represent groundwater flow and calculate quantities of interest like flow rate and pore water pressure. It begins by introducing flow nets and their components - flow lines and equipotentials. It then discusses procedures for drawing flow nets and using them to calculate important values, providing examples of boundary conditions like impermeable boundaries and lines of constant pressure. It also introduces the concept of anisotropic permeability in layered soils and its effects on flow net analysis. Exercises are provided to help the reader practice applying these flow net concepts.
1) The document describes using SEEP/W software to model seepage through an earth dam in four scenarios: a homogeneous dam with downstream seepage, the same dam with a toe drain, and dams with a clay core where the core's hydraulic conductivity is reduced by factors of 10 and 100.
2) The first scenario models a homogeneous dam and shows a seepage face developing on the downstream slope. Adding a toe drain in the second scenario prevents a seepage face by directing all seepage into the drain.
3) Introducing a clay core with hydraulic conductivity 10 times lower than the shell materials in the third scenario causes most potential energy to dissipate in the core, as
This document summarizes research on the influence of database accuracy on ray-tracing based radio wave propagation predictions in urban microcellular environments. The researchers compared prediction results using different building layout databases to measurements. They found that predictions using a manually vectorized cadastre map agreed best with measurements, while a city map led to extra peaks due to omitted building details. Small changes to the base station location or building features like passageways significantly impacted results. Reflection coefficients could be adjusted to improve fitting but their appropriateness is unclear. Accurate building databases and component placements are essential for acceptable ray-tracing predictions.
Real Time Power System and Sub Synchronous Inter HarmonicsIJAEMSJORNAL
Real time Power system is associated with different types of abnormalities which percolate into the system thus generating various spurious signals, which ultimately results in massive breakdown of the same. In this scope of work, we have intended to design a real time power system using MATLAB (Version7.8.0.347) (R2009a) and incorporating Continuous Wavelet Transform and also we have developed a program for effective identification of sub-harmonics, generated or carried into the system due to the power system behavioral nature.
This document summarizes research optimizing the performance of MuGFET transistors on Super Critical-Strained SOI (SC-SSOI) substrates featuring raised source/drain regions and dual Contact Etch Stop Layers (CESL). Short channel nMOS drive current can be improved up to 15% with SC-SSOI and 50% with high tensile 30nm SSOI substrates. The combination of SC-SSOI, raised source/drain regions to reduce resistance, and dual CESL stressors provides the best performance for nMOS, while standard SOI and compressive CESL is best for pMOS.
The document summarizes an experiment investigating flow around a 90-degree bend in a rectangular duct. Pressure measurements were taken along the inner and outer curved walls and across a radial section of the bend. The measurements showed that pressure decreases around the inner wall and increases around the outer wall, as predicted by assuming a free vortex velocity distribution in the bend. The pressure distribution across the radial section also closely matched the calculated values. The loss coefficient for pressure loss around the bend was determined to be 0.15 based on the change in pressure coefficient from the inlet to outlet sections.
The document summarizes a master's thesis that evaluated advanced turbulence models in CFD software to simulate flow over airfoils with thick trailing edges. The student conducted simulations using SST and SAS-SST turbulence models to predict vortex shedding and aerodynamic drag on a truncated trailing edge airfoil. Results from simulations of a NACA 64-621 airfoil were validated against wind tunnel experiments and used to assess errors in CFD predictions of pressure coefficients and base pressure. Simulations were also conducted and validated against water tunnel experiments for a GKN airfoil to evaluate the SAS-SST model's ability to capture unsteady wakes.
Railroad Signal Protection: Planning New Power Transmission lines or Planning...Power System Operation
Railroad companies and power distribution networks often work together by sharing the same right of way. There are several concerns
surrounding power transmission lines in proximity to railways. Current running in transmission line conductors produce an electric field that
induces a voltage in the rail circuits running parallel to them. When a new transmission line is being planned it’s important to make sure that its
inherent design does not cause operating issues with rail circuits. This means that at steady-state nominal current flow the voltage induced in the
rail circuits is at least below the 50 Vrms IEEE human safety standard, ideally lower to increase signaling efficiency.
When examining the effects of overhead power lines on railroad circuits there are many factors that can contribute to unwanted induced voltage.
The two largest factors are the level of current running through the conductors and the physical layout of the power poles and phase conductors
in relation to the rails. Other factors that add to induction are phase conductor geometry, current imbalance and ground conductivity. When
planning a new power line that shares a right of way with a rail circuit it is imperative to know that its inherent characteristics will not poorly
effect signaling, rail detection and other rail circuits.
Ever thought what's an interviewer's favorite questions to rip you off - all of my previous post :).
And On-Chip Variation (OCV) is one of them, specifically for Static Timing Analysis interview. This analysis is coming from people who got interviewed and recruited into leading VLSI industries.
Most importantly, my posts and videos have helped most of them and I really feel proud about it. Nice feeling.
This document describes the design and testing of a hexagonal fractal ultra-wideband antenna using Koch geometry. The introduction of Koch fractal geometry to the monopole and ground plane generates additional resonances, achieving an operational bandwidth of 122%. The compact 31 mm × 28 mm antenna exhibits an omnidirectional radiation pattern with good reflection coefficient across the UWB frequency range. Measurements of the fabricated prototype match well with simulations and demonstrate UWB performance from 3.4 to 13 GHz. Time-domain analysis shows good pulse preservation capability. In summary, the use of Koch fractal geometry enables both miniaturization and wide bandwidth in the proposed UWB antenna design.
Improved Blocked Impedance Model for LoudspeakersAndy Unruh
This document presents an improved electrical circuit model for dynamic loudspeakers that incorporates semi-inductive behavior. The traditional model uses a simple inductor to model impedance, but real speakers exhibit properties not captured by this, such as eddy currents and skin effect. The improved model adds elements to represent these phenomena more accurately. It is verified through impedance measurements on a subwoofer and fitting the data to the new model. The model agrees better with physical behavior and measurement, and allows more precise derivation of loudspeaker parameters.
The document is a lab manual for experiments with analog electronics and cathode ray oscilloscopes (CROs). It includes:
1) An introduction to CRO components and how they work to display voltage signals over time.
2) Instructions for two experiments - the first to familiarize students with CRO functions like measuring voltage, current, frequency and phase shift. The second examines the performance of half wave, full wave and bridge rectifiers with and without capacitor filters.
3) Details on CRO measurements including amplitude, frequency, and the design of rectifier circuits.
A block diagram uses blocks and lines to show the related functions of parts of an electric circuit or system. Such a diagram shows the normal order of progression of the signal through a circuit.
A system is an assembly of parts (components) connected together to perform a stated function.
The system may be comprises of:
• A number of individual components connected together
• A number of smaller units called subsystem.
o Each subsystem itself consists of individual parts
Performance Analysis of savonius hydro turbine using CFD simulationIRJET Journal
This document analyzes the performance of a Savonius hydro turbine using computational fluid dynamics (CFD) simulations and experimental data. It discusses modeling the turbine geometry in SolidWorks and importing it into ANSYS for meshing and simulations. Velocity and pressure contours are presented for different turbine configurations and canal widths. The maximum power coefficient Cp is found to occur at a canal width of 5D. Experimental and simulated results are compared, finding good agreement. In conclusion, a canal width of 5D is determined to provide optimal Cp for the turbine design at low fluid velocities of 0.6 m/s.
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
This report summarizes a computational simulation of the solidification behavior of a eutectic system in response to changes in pulling velocity. A phase field model was developed to simulate the solidification dynamics when increasing or decreasing the pulling velocity of a thin succinonitrile–(D)camphor film. The model was improved by increasing the domain size to include multiple alternating layers, adding a function to change the pulling velocity during solidification, and utilizing a shift function to increase computational efficiency. Simulation results showed changes in lamellar spacing and solidification behavior consistent with experimental observations of a similar system when increasing or decreasing the pulling velocity.
Investigation of Supercavitation PhysicsSiyao Shao
1. The document summarizes an investigation into supercavitation physics conducted in two laboratories. It included studies of ventilated cavitation, configuration effects, and a comparison of ventilated and natural supercavitation.
2. Key findings included that results from the two laboratories for ventilated cavitation agreed well, and that a backward facing model provided better visualization of natural supercavitation compared to a forward facing model.
3. The formation and evolution of natural supercavitation was observed, including four stages of cavity development. Choking behavior, where cavity size remains constant despite pressure changes, was demonstrated and used to measure minimum cavitation numbers.
This document summarizes a study using Star-CCM+ software to model microfluidic flows. Single-phase flow in rectangular and circular microchannels was modeled and validated against analytical solutions. Droplet formation in a microfluidic T-junction and flow focusing device was also modeled using the volume of fluid method. High spurious currents were observed at fluid interfaces with coarse meshes. Adaptive mesh refinement was employed for the flow focusing device to minimize currents and sharpen interfaces, improving the model.
This document discusses flow nets, which are used to analyze seepage problems in soil mechanics. It covers:
1. Common boundary conditions like impermeable boundaries which are modeled as flow lines and submerged boundaries which are equipotentials.
2. Procedures for drawing flow nets including satisfying boundary conditions and creating a square mesh.
3. Using flow nets to calculate quantities of interest like flow and pore water pressure by relating the number of flow tubes and equipotentials.
4. Examples of applying flow nets to problems like seepage under a dam or stranded vessel rescue.
This document discusses flow nets, which are used to represent groundwater flow and calculate quantities of interest like flow rate and pore water pressure. It begins by introducing flow nets and their components - flow lines and equipotentials. It then discusses procedures for drawing flow nets and using them to calculate important values, providing examples of boundary conditions like impermeable boundaries and lines of constant pressure. It also introduces the concept of anisotropic permeability in layered soils and its effects on flow net analysis. Exercises are provided to help the reader practice applying these flow net concepts.
1) The document describes using SEEP/W software to model seepage through an earth dam in four scenarios: a homogeneous dam with downstream seepage, the same dam with a toe drain, and dams with a clay core where the core's hydraulic conductivity is reduced by factors of 10 and 100.
2) The first scenario models a homogeneous dam and shows a seepage face developing on the downstream slope. Adding a toe drain in the second scenario prevents a seepage face by directing all seepage into the drain.
3) Introducing a clay core with hydraulic conductivity 10 times lower than the shell materials in the third scenario causes most potential energy to dissipate in the core, as
This document summarizes research on the influence of database accuracy on ray-tracing based radio wave propagation predictions in urban microcellular environments. The researchers compared prediction results using different building layout databases to measurements. They found that predictions using a manually vectorized cadastre map agreed best with measurements, while a city map led to extra peaks due to omitted building details. Small changes to the base station location or building features like passageways significantly impacted results. Reflection coefficients could be adjusted to improve fitting but their appropriateness is unclear. Accurate building databases and component placements are essential for acceptable ray-tracing predictions.
Real Time Power System and Sub Synchronous Inter HarmonicsIJAEMSJORNAL
Real time Power system is associated with different types of abnormalities which percolate into the system thus generating various spurious signals, which ultimately results in massive breakdown of the same. In this scope of work, we have intended to design a real time power system using MATLAB (Version7.8.0.347) (R2009a) and incorporating Continuous Wavelet Transform and also we have developed a program for effective identification of sub-harmonics, generated or carried into the system due to the power system behavioral nature.
This document summarizes research optimizing the performance of MuGFET transistors on Super Critical-Strained SOI (SC-SSOI) substrates featuring raised source/drain regions and dual Contact Etch Stop Layers (CESL). Short channel nMOS drive current can be improved up to 15% with SC-SSOI and 50% with high tensile 30nm SSOI substrates. The combination of SC-SSOI, raised source/drain regions to reduce resistance, and dual CESL stressors provides the best performance for nMOS, while standard SOI and compressive CESL is best for pMOS.
The document summarizes an experiment investigating flow around a 90-degree bend in a rectangular duct. Pressure measurements were taken along the inner and outer curved walls and across a radial section of the bend. The measurements showed that pressure decreases around the inner wall and increases around the outer wall, as predicted by assuming a free vortex velocity distribution in the bend. The pressure distribution across the radial section also closely matched the calculated values. The loss coefficient for pressure loss around the bend was determined to be 0.15 based on the change in pressure coefficient from the inlet to outlet sections.
The document summarizes a master's thesis that evaluated advanced turbulence models in CFD software to simulate flow over airfoils with thick trailing edges. The student conducted simulations using SST and SAS-SST turbulence models to predict vortex shedding and aerodynamic drag on a truncated trailing edge airfoil. Results from simulations of a NACA 64-621 airfoil were validated against wind tunnel experiments and used to assess errors in CFD predictions of pressure coefficients and base pressure. Simulations were also conducted and validated against water tunnel experiments for a GKN airfoil to evaluate the SAS-SST model's ability to capture unsteady wakes.
Railroad Signal Protection: Planning New Power Transmission lines or Planning...Power System Operation
Railroad companies and power distribution networks often work together by sharing the same right of way. There are several concerns
surrounding power transmission lines in proximity to railways. Current running in transmission line conductors produce an electric field that
induces a voltage in the rail circuits running parallel to them. When a new transmission line is being planned it’s important to make sure that its
inherent design does not cause operating issues with rail circuits. This means that at steady-state nominal current flow the voltage induced in the
rail circuits is at least below the 50 Vrms IEEE human safety standard, ideally lower to increase signaling efficiency.
When examining the effects of overhead power lines on railroad circuits there are many factors that can contribute to unwanted induced voltage.
The two largest factors are the level of current running through the conductors and the physical layout of the power poles and phase conductors
in relation to the rails. Other factors that add to induction are phase conductor geometry, current imbalance and ground conductivity. When
planning a new power line that shares a right of way with a rail circuit it is imperative to know that its inherent characteristics will not poorly
effect signaling, rail detection and other rail circuits.
Ever thought what's an interviewer's favorite questions to rip you off - all of my previous post :).
And On-Chip Variation (OCV) is one of them, specifically for Static Timing Analysis interview. This analysis is coming from people who got interviewed and recruited into leading VLSI industries.
Most importantly, my posts and videos have helped most of them and I really feel proud about it. Nice feeling.
This document describes the design and testing of a hexagonal fractal ultra-wideband antenna using Koch geometry. The introduction of Koch fractal geometry to the monopole and ground plane generates additional resonances, achieving an operational bandwidth of 122%. The compact 31 mm × 28 mm antenna exhibits an omnidirectional radiation pattern with good reflection coefficient across the UWB frequency range. Measurements of the fabricated prototype match well with simulations and demonstrate UWB performance from 3.4 to 13 GHz. Time-domain analysis shows good pulse preservation capability. In summary, the use of Koch fractal geometry enables both miniaturization and wide bandwidth in the proposed UWB antenna design.
Improved Blocked Impedance Model for LoudspeakersAndy Unruh
This document presents an improved electrical circuit model for dynamic loudspeakers that incorporates semi-inductive behavior. The traditional model uses a simple inductor to model impedance, but real speakers exhibit properties not captured by this, such as eddy currents and skin effect. The improved model adds elements to represent these phenomena more accurately. It is verified through impedance measurements on a subwoofer and fitting the data to the new model. The model agrees better with physical behavior and measurement, and allows more precise derivation of loudspeaker parameters.
The document is a lab manual for experiments with analog electronics and cathode ray oscilloscopes (CROs). It includes:
1) An introduction to CRO components and how they work to display voltage signals over time.
2) Instructions for two experiments - the first to familiarize students with CRO functions like measuring voltage, current, frequency and phase shift. The second examines the performance of half wave, full wave and bridge rectifiers with and without capacitor filters.
3) Details on CRO measurements including amplitude, frequency, and the design of rectifier circuits.
A block diagram uses blocks and lines to show the related functions of parts of an electric circuit or system. Such a diagram shows the normal order of progression of the signal through a circuit.
A system is an assembly of parts (components) connected together to perform a stated function.
The system may be comprises of:
• A number of individual components connected together
• A number of smaller units called subsystem.
o Each subsystem itself consists of individual parts
Performance Analysis of savonius hydro turbine using CFD simulationIRJET Journal
This document analyzes the performance of a Savonius hydro turbine using computational fluid dynamics (CFD) simulations and experimental data. It discusses modeling the turbine geometry in SolidWorks and importing it into ANSYS for meshing and simulations. Velocity and pressure contours are presented for different turbine configurations and canal widths. The maximum power coefficient Cp is found to occur at a canal width of 5D. Experimental and simulated results are compared, finding good agreement. In conclusion, a canal width of 5D is determined to provide optimal Cp for the turbine design at low fluid velocities of 0.6 m/s.
Similar to Core and inner screen structures doc (20)
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?Speck&Tech
ABSTRACT: A prima vista, un mattoncino Lego e la backdoor XZ potrebbero avere in comune il fatto di essere entrambi blocchi di costruzione, o dipendenze di progetti creativi e software. La realtà è che un mattoncino Lego e il caso della backdoor XZ hanno molto di più di tutto ciò in comune.
Partecipate alla presentazione per immergervi in una storia di interoperabilità, standard e formati aperti, per poi discutere del ruolo importante che i contributori hanno in una comunità open source sostenibile.
BIO: Sostenitrice del software libero e dei formati standard e aperti. È stata un membro attivo dei progetti Fedora e openSUSE e ha co-fondato l'Associazione LibreItalia dove è stata coinvolta in diversi eventi, migrazioni e formazione relativi a LibreOffice. In precedenza ha lavorato a migrazioni e corsi di formazione su LibreOffice per diverse amministrazioni pubbliche e privati. Da gennaio 2020 lavora in SUSE come Software Release Engineer per Uyuni e SUSE Manager e quando non segue la sua passione per i computer e per Geeko coltiva la sua curiosità per l'astronomia (da cui deriva il suo nickname deneb_alpha).
20 Comprehensive Checklist of Designing and Developing a WebsitePixlogix Infotech
Dive into the world of Website Designing and Developing with Pixlogix! Looking to create a stunning online presence? Look no further! Our comprehensive checklist covers everything you need to know to craft a website that stands out. From user-friendly design to seamless functionality, we've got you covered. Don't miss out on this invaluable resource! Check out our checklist now at Pixlogix and start your journey towards a captivating online presence today.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
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- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
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* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
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#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
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TrustArc Webinar - 2024 Global Privacy SurveyTrustArc
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See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AIVladimir Iglovikov, Ph.D.
Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentations
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
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Presentation of the OECD Artificial Intelligence Review of Germany
Core and inner screen structures doc
1. UltraScreen TM
Core and Inner Screen Structures
June 2015
Author: Dr Gareth Humphreys-Jones
gareth.h-jones@acuityproducts.co.uk
www.acuityproducts.co.uk
2. Introduction to UltraScreen Operation and B Scan Display Format
Each of the following exemplar single channel B Scan displays represents about 15s of
production run with typical line speeds in the range 1–2m/min, So each display presents a
cable length of typically 25-50cm. Twin Channel displays present about half of that, so
typically 12.5-25cm per channel. Radially the system measures to an accuracy of ~10 micron
and on one of the displays radial cursor measurements are included to provide a sense of
scale. As presented in this note, the cable is running through the machine from the bottom to
the top of the displays.
3. Overview of Core and Inner Screen Structures
Fig 1 presents a sketch of a cable core showing two generic features:
1. The tape wrapped around the cable core – with the overlaps indicated by the blue lines on
the sketch.
2. The ‘valleys’ at the boundaries between the four sectors in the core – indicated by the red
lines in the sketch.
The large black arrow overlaid on the sketch shows an illustration of the path that an individual
transducer channel on UltraScreen would scan along as the cable passes through the machine on
the production line.
Fig 1 – Sketch of Cable Core Structures
Fig 2 presents these structures as seen in an UltraScreen ultrasonic image.
Fig 2 – Structures as seen in an Ultrasonic Image
On this figure, four different types of structure have been marked up:
A This periodic structure at the core /inner screen interface is the tape overlapping structure,
i.e. the green pattern in Fig 1, as the longitudinal periodicity seems to match well with the declared
tape widths. (Note: that when ‘Tape Ruckles’ are mentioned this refers to specific situations when
a mis-winding of this tape has caused a much larger, but very localised, disturbance at this
interface). From Acuity’s observations, the pattern above is the ‘normal’ pattern for this interface.
4. B This structure at the inner screen / insulation interface is also the ‘normal’ pattern for this
interface. And the matching of the periodicities of structures A and B, suggests that structure B is
caused as a ramification of structure A, i.e. perhaps that a variation in extrusion pressure caused
by ‘tape overlap’ structure A causes the extrusion perturbation, structure B.
C This structure at the core /inner screen interface that occurs at intervals throughout the run
is, as will be shown in this note, the valley structure, i.e. the red pattern on Fig 1. (Note that such
valleys appear more extended on an ultrasonic image than on an a ‘cable slice’ image due to the
fact that the ultrasonic image is obtained by scanning longitudinally over this structure at a
relatively acute ‘incident’ angle – between the red lines and the black arrow). Nevertheless, this
structure shows clearly that the ‘tape’ surface is clearly depressed below its normal level either
side of the valley and, as such, has fallen into the valley between the core sectors.
D This structure at the inner screen / insulation interface is what Acuity terms a Protrusion,
and/or a Fall-in, depending upon its exact structure, and is believed to be the ramification of
structure C (just as structure B is a ramification of structure A). For that reason it is also believed
to have been caused by, perhaps, a more significant variation in extrusion pressure resulting from
structure C – which is why structure D is more pronounced than structure B.
The time sequence of the occurrence of structures C and D is considered in the following section
to tie them definitively to the red line, valley structure shown in Fig 1.
‘Valley’ Structure Time Sequence
As already noted, the sequencing of the data displayed in Fig 2 is best understood by noting that
the display presents a section of time with the earliest time at the top of the display and the latest
time at the bottom of the display. Thus, moving down the display is the same as moving along the
cable. And as the individual UltraScreen channels are positioned 22.5o
apart, then the fact that a
feature is slowly winding around the cable will be seen from the fact that the same feature will be
seen in adjacent channels with a time delay between its appearance in the channels.
Fig 3 presents a composite B Scan re-presenting the UltraScreen Channel 13 image in the upper
screen, along with the Channel 14 image for the same time period, in the lower screen.
Fig 3 – Channels 14 & 13
Looking at the top of the lower screen, the same feature can be seen in Channel 14 as can be
seen a bit later on in the upper screen, Channel 13. Now the detail of the feature is not identical as
5. the Channel 14 image is taking a different longitudinal ‘slice’ through the feature than that taken in
Channel 13 and, as will be discussed later, the fact this feature itself is not constant ‘channel-to-
channel’ has important ramifications.
As the feature appeared first in Channel 14, and then in Channel 13, it would be logical to expect
that it would next appear in Channel 12. And this fact is demonstrated in Fig 4 which shows the
composite B Scan for Channels 13 & 12.
Fig 4 – Channels 13 & 12
And again in this figure the same feature can be seen at the top of the lower screen, Channel 13,
and a bit later on at the bottom of the upper screen, Channel 12. Logically then the feature would
next be expected to appear in Channel 11, then Channel 10, and then Channel 9, and so on.
Figs 5, 6 & 7 show this progression which is as far as this progression can be taken within this
individual file of data. And again the difference in the appearance of the feature across these five
channels should be noted.
Fig 5 – Channels 12 & 11
6. Fig 6 – Channels 11 & 10
Fig 7 – Channels 10 & 9
Time Sequence Summary
The schema below attempts to summarise the time sequence that has been presented in the
figures above.
From this it may be seen that the time delay between the appearance of the feature in successive,
adjacent channels on the B Scan image reflects the fact that the feature itself is winding around
the cable as the cable moves through the UltraScreen Scanning.
Also, as in this trial the cable had valleys at 90o
separation around the cable, it may be expected
that the adjacent valleys should also be seen 90o
away, i.e. four Channels away, from the valley
highlighted in black in the schema above, i.e. in a positions highlighted in red!
And this fact is confirmed in Fig 8 below, which shows the adjacent valley (and protrusions)
appearing in Channels 10 & 9 at the start of this data set, and in Fig 9 below, which shows the
other adjacent valley (and protrusions) appearing in Channels 14 & 13 at the end of this data set.
7. Time Sequence v Channel Number Schema
Fig 8 – Channels 10 & 9 at the start of the data set.
8. Fig 9 – Channels 14 & 13 at the end of the data set.
Observations
What is clearly shown in this note is the link between features at the core, e.g. tape
overlaps and valleys between adjacent core sectors, and ‘instability’ features at the inner
screen / insulation interface.
However, what is also clear is that the same core feature does not always produce the
same instability feature. Consider the inner screen / insulation interface towards the bottom
of Fig 2, where a small fall-in can be clearly seen in response to a core ‘tape overlap’
feature that looks no different to the others on the figure that have produced no such level
of response. Consider also that all of the protrusion / fall-in features presented in Figs 3 – 7
have been produced in response to the same valley in the core as it has wound its way
around the core. However, what is clear is the structure of the protrusion / fall-in features,
which occur in the different channels, is not constant, and that it can be seen from these
exemplars that there is a variation in the magnitude of the protrusion / fall-in produced by
different instances of the same valley.
The observation that this suggests is that the link between core and ’instability’ features is
not ‘deterministic’, i.e. where the same demand always generates the same response. And,
perhaps, such a non-deterministic response is what should be expected to a perturbation of
what is essentially a ‘fluid’ screen extrusion process.
And the non-deterministic, or ‘chaotic’, nature of this link is important because what it
implies is that if steps are taken to control link, e.g. to try and reduce such protrusions, then
it is likely to only be controllable in a ‘probabilistic’ manner, i.e. the probability of a large
protrusion arising can be reduced, but this should not be taken as implying that large
protrusions still can’t arise – as they can – it’s just less likely.
Thus improving the quality of extrusion does not remove the need to monitor the cable for
the presence of such protrusion / fall-in features!
Note: None of the above, should not be interpreted as saying that the only cause of protrusion /
fall-in features at the inner screen are core structures, other extrusion effects, e.g. hang up, etc.,
can produce inner screen features, and it is also thought that ‘pips’ in the semicon material can
also produce smaller features.