Miracle-dz/UniFAR-FTUs huggingface dataset:
Theoretical study of a power generation unit based on the hybridization of a fuel cell stack and ultracapacitors : application to the design of an aircraft emergency electrical network

Le travail presente dans ce memoire porte sur la conception d'un reseau electrique a base d'une pile a combustible et son organe de stockage associe. Le contexte de ce travail se place dans une application aeronautique. Les piles a combustible a air comprime ont besoin de certains dispositifs auxiliaires qui permettent la bonne diffusion des gaz. A cause de ces dispositifs auxiliaires, la dynamique globale du systeme est limitee, et une hybridation avec une source de puissance auxiliaire peut etre necessaire. En outre, l'hybridation a un impact positif sur la taille du systeme, et peut mener a la reduction du poids et du volume du systeme global. Les supercapacites semblent bien adaptees pour cette mission. Etant donne que notre systeme est dedie a une application embarquee, le volume, le poids, le cout ainsi que la consommation d'hydrogene sont des parametres cles pour le choix de l’une des architectures proposees. Donc, une optimisation globale du systeme semble necessaire
Short-Term Licence Suspensions for Drinking Drivers: An Assessment of Effectiveness in Saskatchewan

Short-term (i.e., 12-hour to 24-hour) administrative licence suspensions have been used in Canada for over 20 years as a means to remove from the road those drivers with relatively low blood-alcohol concentrations (BACs) and to provide them with ample time to have their BAC return to zero before their driving privileges are reinstated. The procedure is quick and efficient and is carried out at the side of the road. It provides the police with an efficient tool for dealing decisively with drivers who have consumed relatively small amounts of alcohol but who are not sufficiently impaired to warrant criminal charges. At the same time, the procedure provides swift and certain punishment―two elements required for effective deterrence. Because the procedure is administrative, it avoids the complications, procedural details, and delays imposed by the criminal process and applies an immediate sanction that is considered appropriate for the level of impairment and risk associated with low BACs. Despite the long history and large number of offenders who have been issued short-term suspensions, there has never been a comprehensive and rigorous evaluation of the effect of these laws. The purpose of the present study was to conduct an evaluation of the short-term suspension law in the province of Saskatchewan. This law came into effect on August 1, 1996. It provides the police with the authority to suspend immediately, for a period of 24 hours, the licence of any driver who has a BAC in excess of 0.04%. This report presents the results from four studies: (1) the general deterrent impact, (2) the specific deterrent impact, (3) the characteristics of drivers issued short-term suspensions, and (4) a survey of police officers.
Speech Recognition in Hindi

This project is an attempt towards reducing the gap between the computer and the people of rural India, by allowing them to use Hindi language, the most common language being used by the people in rural areas. Speech recognition will, indeed, play a very significant role in promoting the technology in the rural areas. Although many speech interfaces are already available, the need is for speech interfaces in local Indian languages, hence we attempt to build a speech recognition system in Hindi, in this project. The project report explains in brief about the basic model of a speech recognition engine and its different modules. It also briefs about the construction of the Hindi language dictionary and training the model for recognition of speech and finally testing the model for accuracy. The results of the tests have been provided and finally the report ends with the derived conclusion and recommended future work.
Sustainability Reporting with Regard to Environmental Performance by Top Indian Textile Companies

A sustainability report is an organizational report that informs about economic, social, and environmental performance caused by its business activities. The purpose of this paper is to determine the level of sustainability reporting of environmental performances across the top textile companies in India. The content analysis method was used to describe the sustainability reporting method. It was found that, 20% of them are reporting as per global reporting initiative (GRI) guidelines and 50% as per the business responsibility format mandated by the Ministry of Corporate Affairs, Government of India. It may be concluded that 70% of the industries are adhering to the business responsibility report. It may be hence concluded that the policy makers may need to 1. Upgrade the business responsibility reporting with a few definite quantitative measures 2. Make third party audits mandatory for business responsibility reporting
Direct Digital Control

From the Publisher: This 496-page reference brings you 21 chapters detailing direct digital control specification and operation - including user training and financing options - for any type of building. Loaded with practical tips for successful building automation decision-making, the handbook guides the reader in insuring that the building will fulfill both present and future operational demands. Topics covered include distributive direct digital control, networking and integrating automated buildings, strategies for DDC system project success, project financing, guidelines for conducting a building control survey, recent technology developments, sequence of operation considerations, equipment and zone level DDC control, hand-held and central operator interface, DDC specification and procurement guidelines, DDC system management, operator training, and case studies for both industrial and commercial DDC installations.
Two Compact Microstrip Patch Antennas for 2.4 GHz Band - A Comparison

Two low profile patch antennas for Wireless LAN 802.11b communication standard are proposed and investigated. In the first structure, the radiating structure consists of a square patch with four equal length slits cut along the diagonal of the patch and four angular grooves cut along the edges of the patch. The second structure consists of a fractal microstrip patch configuration. Both the structures provide an optimized patch area resulting into a substantial reduction in size compared to a typical microstrip square patch designed at the same frequency of operation. It is found that the characteristics of the Grooved patch antenna are comparable to the Fractal patch antenna.
Practical Guide to RF-MEMS

PREFACE RF-MEMS APPLICATIONS AND THE STATE OF THE ART Introduction A Brief History of MEMS and RF-MEMS from the Perspective of Technology RF-MEMS Lumped Components RF-MEMS Complex Networks Modeling and Simulation of RF-MEMS Devices Packaging of RF-MEMS Brief Overview of Exploitation of RF-MEMS in RF Systems Conclusions THE BOOK IN BRIEF Introduction A Brief Introduction to the FBK RF-MEMS Technology An RF-MEMS Series Ohmic Switch (Dev A) RF-MEMS Capacitive Switches/Varactors Conclusions DESIGN Introduction Design Rules of the Fondazione Bruno Kessler RF-MEMS Technology Design of an RF-MEMS Series Ohmic Switch (Dev A) Generation of 3D Models Starting from the 2D Layout Conclusions SIMULATION TECHNIQUES (COMMERCIAL TOOLS) Introduction Static Coupled Electromechanical Simulation of the RF-MEMS Ohmic Switch (Dev A) in ANSYS Multiphysics Modal Analysis of the RF-MEMS Capacitive Switch (Dev B2) in ANSYS Multiphysics Coupled Thermoelectromechanical Simulation of the RF-MEMS Ohmic Switch with Microheaters (Dev C) in ANSYS Multiphysics RF Simulation (S-parameters) of the RF-MEMS Variable Capacitor (Dev B1) in ANSYS HFSS? Conclusions ON-PURPOSE SIMULATION TOOLS Introduction MEMS Compact Model Library A Hybrid RF-MEMS/CMOS VCO Excerpts of Verilog-A Code Implemented for MEMS Models Conclusions PACKAGING AND INTEGRATION Introduction A WLP Solution for RF-MEMS Devices and Networks Encapsulation of RF-MEMS Devices Fabrication Run of Packaged Test Structures Electromagnetic Characterization of the Package Influence of Uncompressed ACA on the RF Performance of Capped MEMS Devices Conclusions POSTFABRICATION MODELING AND SIMULATIONS Introduction Electromechanical Simulation of an RF-MEMS Varactor (Dev B2) with Compact Models RF Modeling of an RF-MEMS Varactor (Dev B2) with a Lumped Element Network Electromechanical Modeling of an RF-MEMS Series Ohmic Switch (Dev A) with Compact Models Electromagnetic Modeling and Simulation of an RF-MEMS Impedance- Matching Network (Dev E) for a GSM CMOS Power Amplifier Electromagnetic Simulation of an RF-MEMS Capacitive Switch (Dev B1) in ANSYS HFSS Electromagnetic Simulation of a MEMS-Based Reconfigurable RF Power Attenuator (Dev D) in ANSYS HFSS Conclusions APPENDIX A RIGID PLATE ELECTROMECHANICAL TRANSDUCER (COMPLETE MODEL) Introduction Mechanical Model of the Rigid Plate with Four DOFs Extension of the Mechanical Model of the Rigid Plate to Six DOFs Contact Model for Rigid Plates with Four and Six DOFs Electrostatic Model of the Rigid Plate Electrostatic Model of the Plate with Holes Electrostatic Model of the Fringing Effect Viscous Damping Model Conclusions APPENDIX B FLEXIBLE STRAIGHT BEAM (COMPLETE MODEL) Mechanical Model of the Flexible Beam with Two Degrees of Freedom Mechanical Model of the Flexible Beam with 12 DOFs Complete Mechanical Model of the Euler Beam with 12 DOFs ElectrostaticModel of the Euler Beamwith 12 DOFs Viscous Damping Model Conclusions INDEX
Node replica detection in wireless sensor networks

In various applications of wireless sensor network, nodes are mostly deployed unattended and unsupervised in hostile environment. They are exposed to various kinds of security threat, and node replication attack is one among them. In this attack, an adversary captures a legitimate node from the network. Then, she creates a number of clones of the original node, and deploys them back into the network. The adversary can gain control of various network activities and launch other insider attacks using these replicas. Most of the replica detection schemes reported in the literature are centralized and location dependent. Centralized schemes are vulnerable to a single point of failure. Forwarding location information incurs additional overhead in location dependent schemes. Most replica detection schemes require exchange of membership information among nodes. To reduce communication overhead we propose two techniques called transpose bit-pair coding (TBC), and sub-mat coding (SMC) for efficient exchange of group membership information among the nodes in wireless sensor network. These schemes are lossless and do not generate false positive. Next, we propose two replica detection schemes for static wireless sensor networks called zone-based node replica detection (ZBNRD), and node coloring based replica detection (NCBRD). In ZBNRD, nodes are divided into a number of zones. Each zone has a zone-leader, who is responsible for detecting replica. ZBNRD is compared with a few existing schemes such as LSM, P-MPC, SET and RED. It is observed that ZBNRD has higher detec-tion probability and lower communication cost. In NCBRD, each node is assigned with a color (value), which is unique within its neighborhood. A color conflict within the neighborhood of a node is detected as a replica. The performance of NCBRD is compared with LSM, SET, and RED. It is found that NCBRD has higher detection probability than the above schemes and lower communication overhead than LSM and RED. The techniques for replica detection in static wireless sensor networks cannot be applied to mobile wireless sensor networks (MWSN) because of nodes mobility. We propose a technique called energy based replica detection (EBRD) for MWSN. In EBRD, the residual energy of a node is used to detect replicas. Each node in the network monitors and is monitored by a set of nodes. Conflict in the timestamp-residual energy pair of a node is detected as replica. EBRD is compared with two existing schemes EDD, and MTLSD. It is found that EBRD has excellent detection probability in comparison to EDD and MTLSD, and the communication overhead of EBRD is higher than EDD and lower than MTLSD. Simulations were performed using Castalia simulator.
Hybrid feature tweaking: Combining random forest similarity tweaking with CLPFD

When using prediction models created from data, it is in certain cases not sufficient for the users to only get a prediction, sometimes accompanied with a probability of the predictive outcome. Instead, a more elaborate answer is required, like given the predictive outcome, how can this outcome be changed to a wished outcome, i.e., feature tweaking. In this paper we introduce a novel hybrid method for performing feature tweaking that builds upon Random Forest Similarity Tweaking and utilizing a Constraint Logic Programming solver for the Finite Domain (CLPFD). This hybrid method is compared to only using a CLPFD solver and to using a previously known feature tweaking algorithm, Actionable Feature Tweaking. The results show that the hybrid method provides a good balance between the distances, comparing the original example and the tweaked example, and completeness, the number of successfully tweaked examples, compared to the other methods. Another benefit with the novel method, is that the user can specify a prediction threshold for feature tweaking and adjust weights of features to mimic the real-world cost of changing feature values.
Expert judgment in contaminated land assessment

Motivation - Engineering judgment forms an integral part of the contaminated land risk assessments required to develop land in the UK (ODPM, 2004). This study investigated how the complex, uncertain site information is used by expert engineers in these assessments. Research approach - Site reports with different cue combinations were assessed and the findings were compared quantitatively to the predictions of three theories of decision making: Recognition-primed decision making (RPD), fast and frugal heuristics and the Lens model. Findings / Design - Support was found for a process of combining several sources of information simultaneously, rather than a matching heuristic in which cues are tested serially. Experts appear to focus on a limited set of information rather than treating all cues equally as recommended in current guidance (Defra, 2004). Research limitations / Implications - The site reports and assessment format, although reflective of real projects, was simplified to meet time constraints of the participants. The sample size used was sufficient to fit the chosen models to the average expert response, though insufficient to enable predicting of individual responses. Both of these aspects could be addressed with further research. Originality / Value - An understanding of expert judgment in contaminated land assessment can be used to improve future training and guidance required to address the current industry skill shortage (ASC, 2008). Take away message - Despite the apparently holistic approach to contaminated land risk assessment described in the qualitative responses to this study, the numeric analysis of the expert's rating of risk showed that it was based on a limited number of cues.
NSF Science of Science Proposal: Randomized Trial of Registered Reports

In theory, Registered Reports eliminate publication bias against negative results because publication decisions are made without knowledge of the results; increase clarity between planned (hypothesis testing; confirmatory) and unplanned (hypothesis generating; exploratory) analyses, thereby increasing the diagnosticity of statistical inferences; and, leverage peer review expertise more effectively to foster better research methodology and more informative outcomes--regardless of whether they are positive or negative results, or are consistent or inconsistent with hypothesized outcomes. With the RRs published to date, there is observational evidence for some of these expectations. But, given the potentially transformative impact of RRs on the research process, we believe that it is essential to conduct a randomized trial to evaluate the model’s qualities. By collaborating with journals, we can conduct a randomized trial of RRs in an ecologically valid context. Authors who receive revise-and-resubmit decision letters asking for an additional study will be invited to participate in the trial. Those that opt-in will be randomized to either a status quo (i.e., standard of care) or RR condition for their resubmission with the additional study. We will examine the impact of RRs on publication (e.g., acceptance rate), research outcomes (e.g., rate of positive results), and qualities of methodology (e.g., sample size, transparency, rigor).
Required level of motivation to revitalize the workforce in software industry of Pakistan

Pakistan's IT industry is currently one of the top performers as compared to other industrial sectors within Pakistan. As per the findings of Ahsan (2008), despite the fact that Pakistan's IT industry is competitive, its true potential is yet to be unfolded. Ahsan (2008); states that Pakistan's so called competitive IT industry has to be in lined with the international performers. A simple proof of this statement can be obtained from the fact that Pakistan's general economy is 1/5th of Indian economy. This must be true for IT sector of both the economies as well, which, unfortunately is not the case as because Pakistan's IT sector is currently 1/27th of the Indian IT Sector. Ahsan (2008) believes that partial reason of this unwanted difference may be revenue models, business practices and political situations of the two countries. Other than these Ahsan (2008) believes that several soft issues are also responsible for this industrial difference. Out of the soft issues 'motivation' is one such important factor. In this research report several motivational factors' are identified and a 'table' is developed to measure the motivation level of employees working in IT Industry of Pakistan. Frequency, Variance and Score of all the motivational factors is identified. These computations and certain numerical calculations and priorities are set against the identified factors in order to perform necessary analysis. Recommendations and findings are given to improve the motivation level of employees working in IT Industry of Pakistan.
A Smart Video Coding Method for Time Lag Reduction in Telesurgery

Abstract : In the future war against terror and new types of offensive activities away from home, telemedical systems, including a telesurgical system, may become standard military medical equipment. In recent years, there have been significant technological advances in both telecommunications and robotics. These advances have made remotely operable telemedicine possible. However, a key technology that rapidly encodes, transmits, and decodes surgical video with the minimum round-trip delay and the least influence by network jitter (random fluctuation of delay) is not currently available. This paper presents a special purpose video coding method to support telesurgery, telemonitoring, and teleconsultation, with special emphasis on telesurgery. Our method utilizes advanced image processing algorithms which prioritize the importance of the scene shown on the video screen. This prioritization is performed according to a gaze map constructed based on tracking the eye movements of the remote observer. During network congestion, our system processes video data more aggressively and transmits non-essential data at reduced data rates. As a result, the essential information necessary to perform surgery is protected against network deterioration.
IPv6 Reverse Routing Header and its application to Mobile Networks

NEMO basic support enables Mobile Networks by extending Mobile IP to Mobile Routers. In the case of nested Mobile Networks, this involves the overhead of nested tunnels between the Mobile Routers and their Home Agents, and causes a number of security issues. This proposal alleviates those problems as well as other minor ones, by using a source routing within the mobile nested structure, introducing a new routing header, called the reverse routing header.
Statistical process control of dye solution stream using spectrophotometer

The need for statistical process control to check the performance of a process is becoming more important in chemical and pharmaceutical industries. This study illustrates the method to determine whether a process is in control and how to produce and interpret control charts. In the experiment, a stream of green dyed water and a stream of pure water were continuously mixed in the process. The concentration of the dye solution was measured before and after the mixer via a spectrophotometer. The in-line mixer provided benefits to the dye and water mixture but not for the stock dye solution. The control charts were analyzed, and the pre-mixer process was in control for both the stock and mixed solutions. The R and X-bar charts showed virtually all of the points within control limits, and there were no patterns in the X-bar charts to suggest nonrandom data. However, the post-mixer process was shown to be out of control. While the R charts showed variability within the control limits, the X-bar charts were out of control and showed a steady increase in values, suggesting that the data was nonrandom. This steady increase in dye concentration was due to discontinuous, non-steady state flow. To improve the experiment in the future, a mixer could be inserted into the stock dye tank. The mixer would ensure that the dye concentration of the stock solution is more uniform prior to entering the pre-mixer ow cell. Overall, this would create a better standard to judge the water and dye mixture data against as well.
A statistical analysis of Los Angeles class OPTAR expenditures between Pacific Fleet homeports

Abstract : For the past several years, average OPTAR expenditures for Los Angeles class submarines have differed between their three homeports in the Pacific Ocean. In an attempt to justify expenditures or find efficiencies, three statistical analyses were performed to verify these differences. OPTAR data were cross-referenced with expenditure information from the NCCA s VAMOSC database. The database produced the data set which consisted of samples from three OPTAR populations: Total OPTAR, Repair OPTAR and Other OPTAR. These population samples were analyzed using the Student-t test, the Wilcoxon rank-sum test and regression with panel data. The main analysis was done comparing the samples from different ports. A follow-on analysis was completed using schedule data as an input. Statistically significant differences were discovered between homeports within the Other OPTAR population. In the follow on analysis, using regression with panel data, correlations were found between OPTAR expenditures and ship schedules.