Miracle-dz/UniFAR-FTUs huggingface dataset:
The Definitive Guide to the Xen Hypervisor

The Xen hypervisor has become an incredibly strategic resource for the industry, as the focal point of innovation in cross-platform virtualization technology. Davids book will play a key role in helping the Xen community and ecosystem to grow. Simon Crosby, CTO, XenSource An Under-the-Hood Guide to the Power of Xen Hypervisor Internals The Definitive Guide to the Xen Hypervisor is a comprehensive handbook on the inner workings of XenSources powerful open source paravirtualization solution. From architecture to kernel internals, author David Chisnall exposes key code components and shows you how the technology works, providing the essential information you need to fully harness and exploit the Xen hypervisor to develop cost-effective, highperformance Linux and Windows virtual environments. Granted exclusive access to the XenSource team, Chisnall lays down a solid framework with overviews of virtualization and the design philosophy behind the Xen hypervisor. Next, Chisnall takes you on an in-depth exploration of the hypervisors architecture, interfaces, device support, management tools, and internalsincluding key information for developers who want to optimize applications for virtual environments. He reveals the power and pitfalls of Xen in real-world examples and includes hands-on exercises, so you gain valuable experience as you learn. This insightful resource gives you a detailed picture of how all the pieces of the Xen hypervisor fit and work together, setting you on the path to building and implementing a streamlined, cost-efficient virtual enterprise. Coverage includes Understanding the Xen virtual architecture Using shared info pages, grant tables, and the memory management subsystem Interpreting Xens abstract device interfaces Configuring and managing device support, including event channels, monitoring with XenStore, supporting core devices, and adding new device types Navigating the inner workings of the Xen API and userspace tools Coordinating virtual machines with the Scheduler Interface and API, and adding a new scheduler Securing near-native speed on guest machines using HVM Planning for future needs, including porting, power management, new devices, and unusual architectures
Wearable high-tech gear for homeland security personnel

Recent homeland security problems in various countries indicate that fixed surveillance systems at important places are not adequate enough. As the security threats take new dimensions in future, mobile smart security personnel wearing high-tech gear will form the basic infrastructure. See first, listen first, detect first, track first, communicate first with peers, assess the threat and coordinate with security head-quarters are the functions of high-tech gear. This paper proposes a high-tech gear involving (i) hands-free and obtrusion-free textile-based wearable microphone array to capture users voice and interface with body-worn computer, (ii) microphone arrays embedded in textiles to listen and record others voices from a distance, (iii) miniature cameras embedded in the shirt to provide the user with omni vision (iv) wireless personal display as GUI hidden in textile or natural glasses, (v) GPS and body area network for positional awareness for information in the form of text or textile integrated, (vi) reconfigurable HW/SW for all the above functions configured in the form of a usual belt. The main focus of this paper is how to configure the high-tech gear with all these sophisticated functions to disappear into the natural wearables of the user giving him normal look in the public. This project is sponsored by Defence Science & Technology Agency, Ministry of Defence, Singapore. This paper covers multi-discipline technologies at system level, hence not possible to go into details of any subsystem. The main objective of this paper is to share our thoughts and get feedback. Progress and some critical design issues are discussed in this paper.
Optical properties of liquid crystal polarization converting devices and their application to optical wavelet transforms

The optical properties of the liquid crystal (LC) polarization-converting device, which can convert a uniformly-distributed polarization state to a radially- distributed one (a radially polarized light), are measured. The availability of such the unique device for optical wavelet transforms is discussed experimentally and theoretically. It is found from the observation of Fourier images that the radially polarized light can be regarded as a 1D Haar wavelet and a circular Haar wavelet in the case with and without an analyzer, respectively. Therefore, we can select two types of Haar wavelets by attaching or removing the analyzer. To discuss the edge extraction properties, the wavelet transforms are implemented by using computer simulations. It is confirmed that the radially polarized light produced by the LC polarization-converting device is useful for extracting edge features of 1D and 2D images in the case with and without the analyzer, respectively.
Research on use of Nature Inspired Algorithms in Software Testing

The intention behind software testing is discovering defects in the developed software, making it error-free, robust and trustworthy. A large quantum of total efforts in the development of software is done on software testing. These efforts may include time, cost and most importantly manpower. The number of efforts required in software testing may be reduced if test data is generated automatically, without trade off the quality of the developed software. In literature, various nature inspired algorithms are used for the optimization of the software testing process. This article is a brief study on the applications of nature inspired algorithms in software testing. To keep the study succinct this study considers only two widely used testing types, structural and functional testing and literature available, since 2010 by considering only SCI or SCOPUS indexed publications.
Dynamic Self Adjusting FACTS-Switched Filter Compensation Schemes for Wind-Smart Grid Interface Systems

This paper validates a number of Flexible AC transmission system (FACTS) filter compensator devices on voltage stabilization and reactive power compensation in a distribution network with embedded wind energy conversion system (WECS). The FACTS filter compensator schemes provide Better voltage stabilization, improved power quality, Interface security, efficient utilization, minimum harmonics levels and energy loss minimization of electricity networks with reactive power and FACTS control, while satisfying the network operating voltage. A novel optimal modified PID controller based on Asymmetrical Switched Pulse Width Modulation (ASPWM) for a set of FACTS devices has been developed for enhancing the dynamic performance of a power system with wind power generation in a wide range of transient conditions including wind gusts. The low cost FACTS filter compensator devices are tested for standalone system (No AC Grid interface) and for AC-Grid interface. The paper presents the application of Multi Objective Particle Swarm Optimization (MOPSO) and Multi Objective Genetic Algorithm (MOGA) techniques in online optimal modified PID controller gain adjusting that dynamically minimize the global dynamic error.
Automotive winter testing with path-following steering robot

When testing modern active safety systems on cars, it is essential to test vehicle response to steering inputs. This paper highlights the use of a path-following steering robot for repetitive car testing in winter conditions. Experiments have been made with commonly used test sequences, e.g., lane-change, double lane-change, constant radius circle, and handling circuit. The steering input from the human driver is replaced by a steering robot and a path-following algorithm. The main focus for this paper is to describe what happens when one pushes the path-following system to, and beyond, the physical limitations of road grip when cornering at high vehicle speed. It shows that, with an appropriate tuning of the path-following parameters, the system performs predictably and satisfactorily. The overall conclusion is that a path-following steering robot is indeed useful for repetitive test in winter conditions with poor road grip.
Development of Prediction Models for the Dengue Survivability Prediction: An Integration of Data Mining and Decision Support System

Dengue is a viral disease that has been feared by people globally. Due to its rapid prevalence and increasing threat, this study explored on the use of data mining techniques together with decision support system to develop prediction models of dengue survivability. This study was focused on three important points namely: identify significant predictor attributes to dengue survivability prediction, development of a rule-based and decision tree models for dengue survivability prediction, and the development of a dengue survivability platform for prediction purposes. The developed rule-based and decision tree models were compared according to accuracy and they underwent the 10-fold cross validation procedure and were integrated in the system to provide a platform to predict the survivability of a patient given the input medical data using a client-server configuration via the Internet. The result of the prediction for the dengue survivability may be used as an intervention by medical practitioners in the general management of dengue cases.
Application of Metal Magnetic Memory Testing Technology to the Detection of Stress Corrosion Defect

The damage of equipment manufactured with ferromagnetic materials in service can be effectively detected by Metal Magnetic Memory Testing (MMMT) technology, which has received extensive attention in various industry fields. The effect of stress or strain on Magnetic Flux Leakage (MFL) signals of ferromagnetic materials has been researched by many scholars for assessing stress concentration and fatigue damage. However, there is still a lack of research on the detection of stress corrosion damage of ferromagnetic materials by MMMT technology. In this paper, the electrochemical corrosion system was designed for corrosion experiments, and three different experiments were performed to study the effect of corrosion on MFL signals. The distribution of MFL signals on the surface of the specimen was investigated. The results indicated that both the normal component Hn and tangential component Ht of MFL signals presented different signal characteristics when the specimen was subjected to different working conditions. Finally, two characterization parameters, Sn and St, were defined to evaluate the corrosion degree of the specimen, and St is better. The direct dependence of corrosion depth on the parameter was developed and the average error rates between the predicted and measured values are 8.94% under the same working condition. Therefore, the expression can be used to evaluate the corrosion degree of the specimen quantitatively. The results are significant for detecting and assessing the corrosion defect of ferromagnetic materials.
Discrete-time automatic spike detection circuit for neural recording implants

A circuit for automatic detection of action potentials (spikes) in neural recording devices is presented. This circuit, designed to operate in discrete time, provides an analogue threshold level based on standard deviation of the analogue samples of the input neural signal. Functionality of the circuit was tested for normal prerecorded neural signals as the input. To examine whether the spike detection threshold level tracks low-frequency baseline variations (e.g. local field potentials), the input neural signal was superposed on both a step function and a low-frequency sine wave. Designed in a 0.18 um CMOS technology, according to simulations the circuit consumes 47 µW from a ±0.9 V supply. A prototype version of the circuit was implemented and successfully tested.
Hydrodynamic Characteristics of a Swimmer’s Hand

The main purpose of this study was to develop a model for calculating forces produced by a swimmer’s hand, with the thumb adducted, accelerating in the direction of flow. The model included coefficients to account for the velocity and acceleration of the hand. These coefficients were designed to calculate forces in the direction opposite the motion (drag) and two components of lift orthogonal to the direction of motion. To determine the coefficients, three-dimensional forces acting on a resin cast of a swimmer’s hand were recorded while accelerating the hand from rest to 0.45 m · s−1 and 0.6 m · −1 in a towing tank. The hand orientation was varied throughout the entire range at 5° increments. Three-dimensional surfaces describing the magnitude of the coefficients as functions of pitch and sweepback angle were produced. It was found that acceleration coefficients as well as velocity coefficients are required for accurate modeling of the forces produced by the hand in swimming. The forces generated by the h.
Simplified portable 4 MHz RF plasma demonstration unit

This paper documents the design of an RF plasma demonstration unit. The paper shows that there are significant challenges associated with the generation of high frequency plasma under atmospheric pressure, but it yields some interesting results and a simple and elegant design. The generator makes use of a standard power MOSFET in a modern switching amplifier design to produce the required RF power and drive the resonator to produce the high frequency discharge.
The influence of the dynamic response of the rider’s body on the open-loop stability of a bicycle

The passive response of the rider’s body to bicycle oscillations is experimentally studied by means of laboratory tests. Lumped element models of the rider’s body are developed and the relevant stiffness and damping parameters are identified from experimental results. The biomechanical model of the rider is coupled with the benchmark model of the bicycle and open-loop stability analysis is carried out. Results show that the stiffness and damping parameters of the waist do not strongly affect bicycle stability. Uncontrolled arm stiffness has a very detrimental effect on stability and destroys the self-stabilization mechanism. Arm damping has a more complex effect and reduces the self-stability region.
Design of a poultry disease isolation facility with programmable environmental control

An 8¥25 m (26¥82 ft) block building was converted from an outdated environmental research facility to a state-of-the-art biological isolation laboratory for poultry disease research. Modification included interior partitioning into two large environmental chambers, the addition of insulation in walls and ceiling, 70 kW (20 tons) of refrigeration, 32 fiber glass biological isolation units, appropriate air handling and waste removal, and a computer-based environmental controller.
Groundwater Quality Assessment of Nanjangud Industrial Hub using Statistical Tool

Hydrogeochemical data pertaining to thirty five groundwater samples in Nanjangud Industrial area were considered in this research work. The water quality parameters were analyzed for physico-chemical characteristics and correlation analysis was used as a statistical tool. Analysis of groundwater revealed that the parameters like EC, TDS, hardness and chlorides in many sampling points exceeded the limits of BIS Standards. EC varied from 0.4 – 12.7mmho/cm and hardness varied from 112 to 2545 mg/L as CaCO3. The correlation matrix clearly indicated that EC was mainly controlled by, TDS, Chlorides and Hardness in a sequence with high positive correlation(> 0.7). Acidity and Sulphates of the ground water samples indicated negative values of Kurtosis (flat peak). The skewness values for the parameters of concern were positive, indicating that data were distributed in the right direction of the tail. It can be concluded that the results of physico-chemical and statistical analysis depicted the deterioration of groundwater in the Nanjangud Industrial area.
Solar irradiance and illuminance models for Japan II: Luminous efficacies

The present study was undertaken to develop simple luminous efficacy models for Japan using the data now emerging from the CIE International Daylight Measurement Programme. Kyushu University in Japan is the national and international co-ordinating centre for this programme. The models proposed herein have been evaluated against data from an independent station. Further, the estimated horizontal and global illuminances have been used to calculate vertical surface illuminances for the independent station. The results show that the method presented herein has the potential to be evaluated for other sites in Japan and world-wide.
Light Enhancement of Solar Module

This paper presents sputtered-deposited Ag nanoparticles (NPs) on the encapsulant material (ethylene vinyl acetate, EVA) with the variation of annealing condition on crystalline silicon solar cell to enhance the light intensity, and a conventional solar cell is also performed for comparison. It was found that an increase in the transmittance at the wavelength of 500 - 800 nm was detected in the Ag nanoparticle solar cells. And red-light enhancement of around 2% was measured in the Ag-sputtered solar module under annealing condition of 700℃ for 3 min from incident photon to converted electron (IPCE) profile. The photovoltaic performance of solar modules was characterized by a flasher system in AAA class (temporal instability, spectral match, and irradiance non-uniformity). The IV curve showed a current enhancement with Ag-EVA sample, and thus a high power output around 0.250 W was observed. A high fill factor of 73.63% also implied a high performance in series and shunt resistance. Surface plasmonic resonance effects of Ag nanoparticles deposited on the surface of solar cell were examined and discussed. This paper not only illustrated the performance of the surface plasmonic resonance of a solar device but also verified the application in the industrial production.
Fin formation using graphoepitaxy DSA for FinFET device fabrication

A 27nm-pitch Graphoepitaxy directed self-assembly (DSA) process targeting fin formation for FinFET device fabrication is studied in a 300mm pilot line environment. The re-designed guiding pattern of graphoepitaxy DSA process determines not only the fine DSA structures but also the fin customization in parallel direction. Consequently, the critical issue of placement error is now resolved with the potential of reduction in lithography steps. However, challenges in subsequent pattern transfer are observed due to insufficient etch budget. The cause of the issues and process optimization are illustrated. Finally, silicon fins with 100nm depth in substrate with pre-determined customization is demonstrated.
Wet Night Visibility of Pavement Markings

Fifty-three participants evaluated the visibility of four different pavement marking materials under a simulated rain system operating at 0.8 in. (20 mm) of rain per hour at night while driving a vehicle on a closed test track. The conditions tested include a variable lighting condition, glare, pavement types, and two different vehicle types. The evaluation consisted of determining the detection distance of a start or an end point of a white 4-in. edge line. Results showed that lighting improved visibility and mitigated the effects of glare. Results also showed that the wet retroreflective tape provided the longest visibility distance, followed by equivalent performance of profile thermoplastic; large glass beads with standard paint provided the shortest visibility distance. The detection distance was compared with the retroreflective performance of the pavement marking technology. It was found that a log-linear relationship exists between the retroreflectivity and the detection distance. It was also found that the level of retroreflectivity provided by the materials tested did not provide adequate visibility distance for a sedan with a 2-s visibility time at speeds greater than 45 mph.
A new active power factor correction method for single-phase buck-boost AC-DC converter

A current mode control technique suitable for a single-phase AC-DC converter is presented. It is shown that application of this technique to a single-phase AC fed buck-boost AC-DC converter yields a sinusoidal input current waveform at unity input power factor. The proposed converter retains this property even under distorted AC input voltage conditions. In addition, the proposed technique offers definite advantages over the conventional boost converter and it is easy to understand, is easy to implement, and draws sinusoidal input current from the AC source for any DC output voltage condition. That is, the DC output voltage may be less than the peak AC input voltage. Furthermore, the proposed technique attenuates substantially the low-frequency harmonic components of the rectifier input current while shifting the unwanted harmonic components near the switching frequency. These unwanted high-frequency components can be easily filtered out using lightweight filter components. <<ETX>>
Environmental benefits of forms of innovations in french manufacturing firms

This paper aims at studying the benefits of forms of innovations on the environment. Using two waves of Community Innovation Survey - CIS datasets, we are able to investigate the impact of four forms of innovations (Product, Process, Organizational and Marketing) during the 2004-2006 period on two types of environmental benefits (for the firm and for the end user) during the period 2006-2008. Our findings indicate that product innovation as no significant impact on environmental footprint whereas three other forms: process, organizational and marketing innovations have a positive and significant impact. Companies that implement specific procedures dedicated to measure and control their environmental impact are more prone to reduce their negative outcomes on the environment.
Wafer-level packaging technology for RF applications based on a rigid low-loss spacer substrate

As mobile portable devices such as cellular system/phones, smart handheld devices and laptop computers acquire wireless connectivity there is a growing demand for greater levels of RF integration. The holy grail of integration is to have a whole set of different components integrated into one chip. However, for RF front-end the problem is the passive device integration. Moreover, protection of noise-sensitive analog circuits from "noisy" digital circuits becomes increasingly difficult for highly integrated components. To meet these challenges new enabling packaging technologies may be considered. The cost of wireless communications systems is often quoted as a most important driver. Thus, wafer-level packaging (WLP) may be considered as a promising solution to cost-effective RF system manufacturing, due to substantial cost savings with WLP's massively parallel processing and testing potential. In this thesis a wafer-level packaging concept based on a rigid spacer technology is proposed, that addresses both the issue of high-Q passive device integration and of on-chip isolation.