Miracle-dz/UniFAR-FTUs huggingface dataset:
Pampering the Client: Calibrating Vehicle Parts to Satisfy Customers

We present in this paper a statistical methodology to address the following industrial problem. Car manufacturers haveto calibrate their vehicles in order to reach a level of quality which is acceptable to the customer. We consider here thespecific case of a gear-box. Our study relies on a dataset consisting of evaluations by 507 testers of 28 configurations,each described by 12 physical parameters. We suggest a procedure for selecting and calibrating the physical parameterswhich have an impact on the evaluations. Our procedure consists of two steps. We first compute the regularization pathof an L1 – penalized logistic likelihood from which we extract an increasing sequence of models. In the second step of ourprocedure, we apply the BIC criterion to select a model in the sequence obtained in the first step. We provide a simplenumerical procedure for this approach and discuss its application to the data. This article is accessible to readers with atleast an intermediate knowledge of statistics; previous exposure to logistic regression and the principles of model selectionwould be useful, although not strictly necessary.
The Reflection of Income Segregation and Accessibility Cleavages in Sydney's House Prices

This paper explores the relationships between accessibility, income segregation, and house prices in the Greater Sydney Area. Sydney is found to have reasonably even employment accessibility, reflecting the increasingly polycentric nature of the modern city; however, it also shows considerable income segregation and variance in property prices between different parts of the city. Entropy is used to examine the diversity and mixing of different income groups. Finally, hedonic price models using ordinary least square and geographically-weighted regression techniques to show the differing effects of employment accessibility on house prices in different parts of the city. The results show that accessibility has small to negative effects on prices in the most valuable areas, suggesting that other effects such as recreational access and employment type/quality may be important to investigate further in this context.
In‐process measurement system based on laser triangulation during heat treatment

This paper presents the calibration and the use of a laser triangulation system for non‐contact measurements of workpiece geometry changes during heat treatment. The system was developed within the scope of the Collaborative Research Centre SFB570 of the Deutsche Forschungsgemeinschaft to provide geometrical information obtained in hot environments (temperatures up to 900 °C) for the verification of heat treatment simulations. Due to its in‐process‐measurement capability, this system also enables the closed‐loop control of distortion compensation. It will be applied in a furnace specially designed for heating steel rings symmetrically or asymmetrically.
Triple‐band CPW‐FED L‐shaped monopole antenna with small ground plane

This article presents a CPW‐fed planar monopole antenna with a small ground‐plane size. The monopole antenna is a triple‐band design and is meant for mobile handsets with WiFi and WiMAX features. The planar structure comprises an L‐shaped monopole backed by a stub‐loaded open‐loop resonator. The proposed antenna features three bandwidths of 2.25–2.62 GHz, 3.25–4.97 GHz, and 5.2–6.30 GHz, which yielded the maximum gain of around 1 to 2 dBi. Reduction effects of ground‐plane on antenna's performance rectified by the parameters of open‐loop resonator are also investigated. The overall dimensions are 46 (W) × 34 (L) × 0.8 (d) mm3. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2274–2277, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26240
Influence of pH of the electrolyte on the formation and properties of electrodeposited ZrSe2 thin films

Abstract Zirconium diselenide thin films were electrodeposited on the stainless steel substrates for various pH values ranging from 2.0 to 3.5. The deposition potential range suitable for the deposition has been optimized using cyclic voltammetry (CV). The X-Ray Diffraction (XRD) results confirm that the thin films produced were polycrystalline in nature with hexagonal structure peak at 2θ = 43.8° (003) of ZrSe2. The surface morphology of the film indicate, as the pH was increased the grain size of the film become larger due to agglomeration. The direct band gap energy of the films was found to be in the range of 1.77–1.83 eV.
GaN nanowire light emitting diodes based on templated and scalable nanowire growth

GaN optoelectronic devices based on nanowires offer potential advantages that merit further investigation for applications in solid-state lighting and displays. Reported is the operation GaN nanowire, light-emitting diodes that are based on a uniform and scalable nanowire process. For light-emitting diodes consisting of approximately 300 nanowire pn homojunctions, operating in parallel, the electroluminescence intensity was found to grow superlinearly with current. For individual nanowire light-emitting diodes the forward and reverse leakage current was<1 pA. The low leakage current of individual light-emitting nanowire diodes indicates that surface effects do not dominate the electrical behaviour of these LEDs.
A compact one‐dimensional modal FDTD method

The finite‐difference time‐domain (FDTD) method is an effective technique for computing wideband electrical parameters such as scattering parameters of waveguide structures. in the computations, a known incident is normally required and is usually obtained with a simulation of a long uniform structure. For a three‐dimensional problem, simulation of a long structure can be very memory‐ and CPU time‐intensive. In addition, effective absorbing boundary conditions are needed to effectively terminate the structure even at and below the cutoff frequencies. To address these issues, many one‐dimensional FDTD methods and absorbing schemes were proposed. However, they all have dispersion characteristics different from those of the conventional FDTD method, leading to undesired errors or reflections. In this paper, a new one‐dimensional scheme is developed that has numerical dispersion characteristics very similar to that of the conventional FDTD method. When used as the absorbing boundary condition, it generates reflections of less than −200 dB even at and below the cutoff frequencies for the considered modes. When used to obtain the incident wave, its results have difference of less than −200 dB from that produced by the conventional FDTD method. Copyright © 2007 John Wiley & Sons, Ltd.
Detection and Diagnosis Solutions for Fault-Tolerant VSI

This paper presents solutions for fault detection and diagnosis of two-level, three phase voltage-source inverter (VSI) topologies with IGBT devices. The proposed solutions combine redundant standby VSI structures and contactors (or relays) to improve the fault-tolerant capabilities of power electronics in applications with safety requirements. The suitable combination of these elements gives the inverter the ability to maintain energy processing in the occurrence of several failure modes, including short-circuit in IGBT devices, thus extending its reliability and availability. A survey of previously developed fault-tolerant VSI structures and several aspects of failure modes, detection and isolation mechanisms within VSI is first discussed. Hardware solutions for the protection of power semiconductors with fault detection and diagnosis mechanisms are then proposed to provide conditions to isolate and replace damaged power devices (or branches) in real time. Experimental results from a prototype are included to validate the proposed solutions.
First operation of the HAP/MOPA traveling wave structure at Boeing FEL

The first of six 1.3-GHz, 18-cell, constant impedance, traveling wave linac structures has been placed under RF power and used to accelerate an electron beam. The design of the structures and low power measurements of insertion loss and group delay are described. The observed voltage gain under high power is compared with predictions based on low power measurements and URMEL calculations for the accelerator mode in a single cell.
Efficient Hyper-Volumetric Contact Dynamic Modelling of the Foot Within Human Gait Simulations

This study describes the development of a multi-body foot contact model consisting of spherical volumetric models for the surfaces of the foot. The developed model is two-dimensional, and consists of two segments, the hind-foot, mid-foot, and forefoot as one rigid body and the phalanges collectively as the second rigid body. The model has four degrees of freedom: ankle x, y, hind-foot orientation, and metatarsal joint angle. Both ankle and metatarsal joints are assumed to be revolute joints. Three different types of contact elements are targeted: Kelvin-Voigt, linear volumetric, and nonlinear volumetric. The models are kinematically driven at the ankle and the metatarsal joints, and simulated horizontal and vertical ground reaction forces as well as center of pressure location are compared against the measured quantities within a complete human gait cycle. The hyper-volumetric foot contact model was found to be a suitable choice for foot/ground interaction modelling within human gait simulations.Copyright © 2013 by ASME
The Design of Three-Dimensional Computer Room Monitoring System Based on Unity3D

Based on the Unity3D platform, using 3D MAX as the modeling tool, and the combined with the JSP and the C# to realize the interactive design, through the integration and XML integration, Completed the 3D engine room monitoring system design and implementation, practice shows that, Unity3D has a good network of 3D display and interactive function, it will have broader prospects of development in the virtual platform development, virtual reality technology has important strategic significance in the development of enterprise information management.
Blast induced air overpressure and its prediction using artificial neural network

Air blast is considered to be one of the most hazardous environmental disturbances created by blasting operation. Prediction of air overpressure (AOP) generated owing to blasting is difficult due to the influence of several factors in the air wave transmission. Blast design parameters, wind direction and speed, atmospheric temperature, humidity and topography, etc. are all affecting AOP. In this paper, an attempt has been made to predict AOP using artificial neural network (ANN) by incorporating the most influential parameters like maximum charge weight per delay, depth of burial of charge, total charge fired in a round and distance of measurement. To investigate the effectiveness of this approach, the predicted values of AOP by ANN were compared with those predicted by generalised equation incorporating maximum charge weight per delay and distance of measurement. Air overpressure data sets obtained from four different mines in India were used for the neural network as well as to form generalised equation. The network was trained by 70 data sets and validated with 25 data sets. The network and generalised predictor equations were tested with 15 AOP data sets obtained from another two mines. The results obtained from neural network analysis showed that the depth of burial of the charges and maximum charge weight per delay were among the blast designed parameters that have most influence on AOP. Based on the ANN result, depth of burial of charge has more relative sensitivity and weight than the maximum charge weight per delay. The average percentage of prediction error for ANN was 2·05, whereas for generalised equation, it was 5·97. The relationship between measured and the predicted values of AOP was found to be more logical in the case of ANN (correlation coefficient: 0·931) than that of generalised equation (correlation coefficient: 0·867).
Ergonomic analysis of slip-resistance measurement devices

Several measurement devices and techniques have been developed during the past 50 years in an attempt to quantify the static and/or dynamic coefficient of friction (COF) of shoe and floor surface interfaces. Much of this work has been laboratory research with bulky equipment, but recently portable measurement devices have evolved to the extent that field measurements can be taken. Six such devices, three for static COF (Bigfoot, Slipometer and NBS-Brungraber) and three for dynamic COF (British Portable Skid Tester, TORTUS and FIDO), were tested in laboratory and field studies so that an ergonomic assessment of device performance could be made. Device consistency, repeatability, accuracy and ease of use were examined for a variety of shoe, floor and floor preparation conditions. All of the devices had advantages and disadvantages for field use; these are summarized and recommendations are made for successfully measuring COF values in the field. Application of ergonomic principles can facilitate the selecti.
Readiness for Flexible Learning amidst COVID 19 Pandemic of Saint Michael College of Caraga, Philippines

With the current situation in the educational system amidst the coronavirus pandemic and the call for flexible learning, Saint Michael College of Caraga has deemed it necessary to survey its stakeholders, particularly the students’ and teachers’ readiness for flexible learning. The researchers used descriptive research design by Creswell & Creswell (2017) in conducting the study. Based on the findings, the result shows that the respondents, the Junior High School (JHS), Senior High School (SHS), College, and Teachers of Saint Michael College of Caraga, are ready for flexible learning. The majority of the respondents have smartphones, laptops and can connect to the internet through mobile data and Wi-Fi providers. Since smartphones, laptops and an internet SMCC Teacher Education Journal ISSN Print: 20080598 • ISSN Online: 2008-0601 Volume 2 • June 2020 DOI: SMCC Teacher Education Journal 2 connections are the technical requirements for online education. It was recommended that the official online platforms or learning management system first be established by the institution. Also, the respondents use mobile data as their source of internet connection, a flexible learning scheme that would have low usage of mobile data to lessen the students’ expenses, and offline class or use of modules or learning materials should also be an option for those students who don’t have connectivity. Moreover, teachers should undergo trainings and seminars on how to conduct online classes, and the curriculum should be revisited to accommodate the paradigm shift.
A system for online detection and classification of wafer bin map defect patterns for manufacturing intelligence

Wafer bin maps (WBM) in circuit probe (CP) tests that present specific defect patterns provide crucial information to identifying assignable causes in the semiconductor manufacturing process. However, most semiconductor companies rely on engineers using eyeball analysis to judge defect patterns, which is time-consuming and not reliable. Furthermore, the conventional statistical process control used in CP tests only monitors the mean or standard deviation of yield rates and failure percentages without detecting defect patterns. To fill the gap, this study aims to develop a manufacturing intelligence solution that integrates spatial statistics and neural networks for the detection and classification of WBM patterns to construct a system for online monitoring and visualisation of WBM failure percentages and corresponding spatial patterns with an extended statistical process control chart. An empirical study was conducted in a leading semiconductor company in Taiwan to validate the effectiveness of the proposed system. The results show its practical viability and thus the proposed solution has been implemented in this company.
Ergonomics is good for business

Ergonomics refers to the complex relationship between workers and their work that permeates every aspect of the workplace. Originally defined in 1717 by Bernadino Ramazinni, an Italian physician credited as the founder of occupational medicine, it is only recently that ergonomics has attracted widespread attention. This article will illustrate that the increasing interest in ergonomics is warranted and that appropriate ergonomic management is a process that will have a significant, positive effect on a company′s profits through cost reduction, quality improvement, performance improvement and productivity enhancement. Derived from the Greek words ergo and nomos meaning “work” and “natural laws”, ergonomics literally means the laws of work.
Voltage overshoots and n-MOSFET hot carrier robustness in VLSI circuits

Capacitive coupling and charge redistribution effects in product circuits can result in large V/sub ds/ overshoots which cause much larger reductions in n-MOSFET hot carrier failure times than the transition time dependencies previously studied. Using a variety of simulations, we show that these effects can occur in typical high performance microprocessor circuits. Controlling these effects and verifying circuit compliance are key to ensuring hot carrier robust circuit design. Although we focus on n-MOSFET's a symmetrical argument can be made for p-MOSFET's. <<ETX>>
Controllable high-power, variable-frequency CMOS circuit for microactuator applications

A large-output power, high-current high-voltage, CMOS driving circuit for electrothermal microactuators is presented in this work. The circuit addresses the challenge of providing microelectromechanical systems devices with a monolithic integrated circuit that is capable of outputting high voltage with low output resistance that matches the actuator load for maximum power transfer. The circuit is implemented using a modified eight-stage charge pump. A digital control logic is designed to control the working charge pump stages in order have a variable output voltage between 4 and 15.5 V on a load producing about 150 mW maximum output power. To the authors’ knowledge, the circuit’s output resistance is the lowest among charge pumps that are capable of producing such high voltages. An AC pulse output of 15.5 V amplitude and variable frequency between 60 and 2000 Hz is included in the circuit. The circuit is operated by a conventional 5 V supply. With the variable DC output voltage level and AC output capability, the circuit is suitable for driving many electrothermal microactuators. The total size of the chip excluding pads is 5 mm2.
Development and Operation of the El Gueria Reservoir, Ashtart Field, Offshore Tunisia

The Ashtart field is the second largest oil field in Tunisia, and maintaining a high level of production is important to the country's economy. The field's development is a good example of what can be accomplished through prudent operations and timely acquisition of reservoir and performance data. The analysis of these data has resulted in a better understanding of reservoir characteristics and field performance under pressure maintenance operations. This paper discusses the field performance history and the results of reservoir simulation studies designed to investigate means of achieving maximum oil recovery. The operational aspects of injecting seawater and artificial lifting of directional wells also are discussed. Performance data that were acquired after the projection of future performance are compared to predicted results. The geological and petrophysical characteristics of the reservoir rock are of interest because field case histories of nummulitic limestone reservoirs have not been reported in SPE literature.
Analysis on Coupling Relations between Industrialization and Ecological Environmental in Inner Mongolia

Based on the connotation and characteristics on cross coupling of industrialization and eco-environmental, the paper constructed the index system and measurement model on the coupling correlation evaluation of regional industrialization process and eco-environmental quality. The temporal feature of coupling factors and coupling degree between industrialization and eco-environmental in Inner Mongolia during 1990 to 2010 were analyzed. The results show: (1) The correlation degree of industrialization and eco-environmental in Inner Mongolia is between moderate to extremely close relationship, it shows that there is stronger coupling between industrialization and eco-environmental. (2) Environmental improvement and ecological protection are the main driving forces to promote the eco-environmental quality, industrial economy development is the stress factors for eco-environmental in Inner Mongolia. The feedback of eco-environment on industrialization is mainly on the support, restraint and limit function which the resource, environment, economy, science and technology factors on industrialization. (3) The coupling degree between industrialization and eco-environmental in Inner Mongolia has a fluctuation and stage feature. The coupling relation between industrialization and eco-environmental lies between the antagonistic period to running in stage.
Computational Issues in Micro-Genetic Algorithms for Traffic Management

Emerging artificial intelligence techniques such as genetic algorithms (GAs) allow a more realistic representation and solution of difficult and combinatorial problems such as the dynamic traffic queue management problem. Computational experience in solving such complex large-scale problems by use of micro-GAs is described. In addition to providing evidence of the ability of micro-GAs to successfully identify optimal traffic management schemes, some micro-GA-associated computational issues that warrant attention are highlighted. Choosing a proper population size is a critical decision, and internal variability must be accounted for to assess the goodness of the optimization results properly. A simple rule for deciding the best population size for micro-GAs is proposed. Micro-GAs may converge to low-quality solutions, particularly with very small population sizes; convergence of micro-GAs by itself is not a sufficient indication of good performance. The size of the search space for some real-world systems can pose some difficulties to micro-GAs. Choosing between micro-GAs and regular GAs is a problem-dependent decision.
Part 2: Pavement Strength and Deformation Characteristics: Validation of Material-Level Performance Models: Using the Third-Scale Model Mobile Loading Simulator

A mechanistic pavement analysis with laboratory fatigue cracking and rutting models was validated with the response and performance measured from asphalt pavements. Asphalt pavements with different air void contents were tested using the third-scale Model Mobile Loading Simulator (MMLS3). The fatigue life prediction algorithm adopts a cumulative damage analysis; the permanent deformation prediction algorithm uses a sublayering method. These algorithms, which are similar to the ones adopted in the NCHRP 1-37A Mechanistic-Empirical Pavement Design Guide (MEPDG), account for the loading rate and temperature variation along the depth of the pavements. The major difference between the algorithms used in this study and the ones in the MEPDG is that the difference in loading frequencies between the laboratory test method and the MMLS3 test was accounted for in this study using the time-temperature superposition principle with growing damage. The predictions of fatigue life and permanent deformation growth in the.