Miracle-dz/UniFAR-FTUs huggingface dataset:
Pitch Attitude Control Design of Unmanned Aerial Vehicle via Hardware-in-the-Loop Simulation

This paper describes an investigative hardware-in-the-loop simulation (HILS) effort through virtual instrumentation on longitudinal control of an unmanned aerial vehicle (UAV). The proportional-integral-differential (PID) controller and fuzzy logic controller (FLC) are designed for the pitch angle hold mode of autopilot; moreover, they are implemented by an embedded real-time control system as a prototype autopilot and tested by hardware-in-the-loop simulation. The hardware configuration of HILS is composed of a personal computer, an embedded real-time control system, several data acquisition devices, servo and sensor unit. The real-time control and data acquisition tasks in HILS is carried out by virtual instruments that is developed by graphical programming language LabVIEW. HILS provides a platform for researchers to correct and improve their design efficiently. The closed-loop performance between PID controller and FLC is evaluated in HILS. The results demonstrate that in the presence of unmodelled dynamics and nonlinear saturation the FLC has an excellent robust performance.
Comparison of the performance of maximum power point tracking schemes applied to single-stage grid-connected photovoltaic systems

This work presents a comparison of various maximum power point tracking (MPPT) techniques applied to 1-Phi, single-stage, grid-connected photovoltaic (PV) systems. A representative single-stage grid-connected PV system, based on buck-boost converter topology operating in discontinuous current mode (DCM) with sine-triangle pulse width modulation (SPWM) and feeding sinusoidal power into the grid, is considered for this study. MPPT techniques are compared on the basis of the time taken to reach (track) the MPP, operating point oscillations in the vicinity of MPP and the dependence of the algorithms, if any, on array configuration and parameters. Comparison is also made on the basis of the energy extracted from the PV source during the transient tracking phase. In this context, an energy tracking factor term (E TF ) is introduced and defined. It is observed that all the MPPT schemes studied have their own merits and demerits. The ripple correlation and beta methods offer an overall good combination of desirable features. All the results of this study are presented.
Organizational Power in Perspective

Power and influence are fundamental human phenomena that are deeply ingrained on the psyche and conscious personality of individuals. The difference between proper and improper use of power is the difference between success and failure, high and low productivity, motivation and disillusionment. This paper includes a review and analysis of the classical concepts of power in management literature, a description of power styles, and classical research findings on the optimum use of power. In it I describe power bases and cover the relationship of power with project uncertainty, organizational climate, situational leadership, productivity, and individual independence. Links are made to leadership styles, and references are made to negative uses of power. Overall, the concept of power is placed in perspective as it relates to management needs, and ideas are discussed for managing and controlling power for the benefit of organizations. The immense advantages of expert power and personal influence (reference pow.
A CMOS Input Buffer for High-Resolution A/D Converters with High Sampling Rates

With respect to the application of high-speed, high-resolution A/D converter, the design and implementation of a CMOS input buffer is introduced. The buffer features high-speed and high-linearity. Its performances have been verified in a 14-bit 250MSPS pipelined A/D converter which is developed in 0.18um CMOS-based process technology. The simulation shows that the SFDR of the buffer is up to 104dB at an input clock of 250MHz with an input signal of 25MHz.
New boost converter based on Sheppard-Taylor topology

This study presents a new boost converter based on Sheppard-Taylor topology for low-power applications. The proposed converter is capable of regulating output voltage under wide range of input voltage or load variations. Compared with the Sheppard-Taylor converter, the converter can be implemented with fewer components. The main switches of converter are turned on with zero-current-switching, and the rectifier diodes are turned off with zero-voltage-switching. A small-signal average model for the proposed converter is derived and transfer functions for the system output voltages are derived. The guidelines for the system design are provided. Finally, experimental results are given to confirm the system performance.
Comparison between narrow-angle-band and wide-angle-band spatio-temporal FEM and FD BPM codes for the propagation of ultrashort optical pulses

An efficient finite-element formulation for the simulation of ultrashort optical pulses is thoroughly presented. This numerical propagator, capable to take into account spatial and temporal effects, incorporates a wide-angle-band Pade approach and perfectly matched layers (PML) at the truncated boundaries. Its effectiveness and higher performance over other similar approaches are clearly demonstrated through key simulations.
Efficiency enhancement of RF power amplifier using reconfigurable power dividers

A reconfigurable power divider is proposed using coupled lines and switches. It routes the input signal to one of two outputs with low insertion loss and good impedance matching. The proposed power divider is applied to a dual-mode power amplifier (PA). Measurement at 900 MHz shows that the efficiency of the PA can be greatly improved at low input powers thanks to the developed reconfigurable power dividers.
A wet chemistry approach to sub-micron removable flip chip interconnects

Higher performance is the main driver in the integrated circuit (IC) market, but along with added function comes the cost of increased input/output connections and larger die sizes. Space saving approaches aimed at solving these challenges includes two technologies; 3D stacking (3D-ICs) and flip chip assemblies. Emerging ICs require sub-micron scale interconnects which include vias for 3D-ICs and bump bonds for flip chips. Photolithographic techniques are commonly used to prepare templates followed by metal vapor deposition to create flip chip bump bonds. Both the lithography step and the metal properties required for bump bonding contribute to limiting this approach to a minimum bump size of ~10 μm. Here, we present a wet chemistry approach to fabricating uniform bump bonds of tunable size and height down to the nanoscale. Nanosphere lithography (NSL), a "soft" lithographic technique, is used to create a bump bond template or mask for nanoscale bumps. Electrochemical deposition is also used through photoresist templates to create uniform bump bonds across large area wafers or dies. This template approach affords bumps with tunable diameters from 100s of nanometers to microns (allowing for tunable interconnect pitch and via diameters) while the use of constant current electoplating gives uniform bump height over large areas (>1 cm2).
Interpersonal Conflict in Construction: Cost, Cause, and Consequence

AbstractInterpersonal conflict on the job is identified as one of the top occupational job stressors, strongly linked to a reduction in worker psychological and physical health. In addition, interpersonal conflict has been identified as a determinant of work disability, occupational accidents, and other costs related to reduced quality, loss of skilled employees, restructuring inefficiencies, decreased motivation and productivity, absenteeism, and employee turnover. For the construction industry, studies suggest that construction owners and contractors ranked conflict among construction project participants as the highest factor affecting project cost. It is astonishing, in light of this fact, that no research studies exist which attempt to expose the unmistakable financial cost of day-to-day conflict in the construction industry among project participants at the supervisory and trades level. Therefore, the research question being explored is: What are the triggers and consequences of interpersonal confli.
Clinical profile and outcome of pediatric surgical patients in a rural tertiary centre

Background: Pediatric surgery is a sub-speciality involving the surgery of foetuses, infants, children and adolescents. Congenital malformations, trauma and childhood cancers are their three major concerns requiring the focus of their attention. Rural pediatric population in India still remains devoid of such facilities. Little is factually known about the burden of surgical disease globally. Surgical treatment is an essential component of basic medical care and an important means of providing preventive and curative therapy. Pediatrician has a significant role in caring for surgical patients. There is a need to know the spectrum of diseases that warrant admission into the pediatric surgical units. Current study was conducted to find out the clinical profile and immediate outcome of the various pediatric surgical conditions. Methods: This prospective observational study was conducted at Vadodara. All the patients 0-18 years, with surgical condition were enrolled in the study. Patients were followed from the time of admission to discharge. All the clinical data from admission to discharge were recorded and analyzed.Results: Total 127 (3%) patients were enrolled in the study. Males were 93 (73.2%). One to 5 years 45 (35.4%) was the largest age group folowed by infants 23 (18.1%). Largest number of patients were from Gastro Intestinal Condition 52 (40.9%) and congenital causes forms 83 (65.35%) of admissions. Commonest congenital anomaly was inguinal hernia 23 (27.7%). Complications were recorded in 46 (36.22%) patients. The average duration of stay was 7.7 days. The 124 patients were discharged successfully.Conclusions: Surgical conditions are important part of pediatric and neonatal care. Management of congenital surgical condition is important to decrease infant and under five mortality and other comorbidities as well.
Impact Response Spectrum for Design of Ship-Bridge Collisions

Due to the complexity involved and limited study on the topic, the equivalent static method, adopted in the current codes for structural design of bridges under ship collisions, does not take into account the dynamic amplification effect correctly. An accurate assessment of impact force based on refined numerical simulation is time consuming and is normally too complex for ordinary design procedure. Herein, with reference to the earthquake response spectrum method, an impact response spectrum method, which considers the dynamic amplification effect and is efficient for design, is proposed. Through refined numerical simulations of ship-rigid wall collisions, 81 impact force time histories associated with 9 typical ships under 9 velocities are obtained. The dynamic magnification factor (DMF) of single-degree-of-freedom (SDOF) systems with different periods and damping ratios experiencing the 81 impact force time histories are then studied. The relationship of DMF and period under different damping ratios, i.e. the DMF spectrum, is yielded by statistical analysis, based on which the impact response spectrum is obtained. Finally, the design combination method for multi-degree-of-freedom based on the impact response spectrum of SDOF is discussed for a continuous beam bridge.
Application of Collision Detection in Visual Simulation System for Bridge Cranes

Collision detection is the key technology in the visual simulation system for bridge cranes. According to analyse the collision between hook and virtual objects in visual simulation system for bridge cranes, collision detection method of visual simulation system for bridge cranes is determined based on the collision detection principle. First of all, LOS intersection vector method is chosen based on the principle of collision detection in Vega. Hook is designed for the collision target using Isector module in Lynx and the same intersection vector masks in Isector Class are guaranteed. Then, the BUMP collision detection for hook is created by calling vgIsector functions in VC++ and BUMP detection method of hook is bounded with hook. Finally, conditional statements which ensure hook to move without collision are compiled. Therefore, the virtual scene around the hook is detected in real time. The results show that the phenomenon of passing through by mistake for the hook can be avoided applying the BUMP collision detection method in Vega software in visual simulation system for bridge cranes, and the accuracy for BUMP method detecting the goods is improved using LOS collision detection method.
Comparison of phenomenological membrane bioreactor activated sludge biological models with alternative versions based on time series input-output approaches

Data was taken from a full scale sidestream membrane bioreactor (MBR) plant that has been treating industrial wash water from a salad processing factory based in Worcestershire. Various online and offline measurements were taken during an intensive sampling period for the complete flow train. Offline tests included measuring extra-cellular polymeric substance (EPS) and soluble microbial product (SMP) levels in the sludge water which are the main foulants on the associated membrane [1]. Two modified phenomenological Activated Sludge models based upon the ASM1 and ASM3 that included EPS/SMP concentrations were calibrated and validated using these offline and online measurements [2–6]. In order to see whether a simpler model structure could be formulated for advanced control purposes that was based wholly upon measured historical data sets, further conceptual models were developed based on system identification procedures and input-output times series analysis methods [7]. These model forms utilised autoregr.
Flatness Measurement Using Two Laser Stripes to Remove the Effects of Vibrations

Flatness measurement and control is a requirement in the production of high-quality rolled steel products. One of the most popular measurement methods is based on laser light-sectioning sensors. This method is based on the projection of a laser stripe onto the steel strip while it moves forward along a roll path. The extraction of the laser stripes provides information about the lengths of the strip fibers, which are used to compute flatness. This flatness measurement method is easy to maintain, provides accurate results, and can be built using low-cost components. However, it has a major disadvantage: it is severely affected by vibrations. Thus, when the movement of the strips is affected by vibrations, the resulting flatness measurement is inaccurate. This paper proposes a solution: using a second laser stripe and taking advantage of this redundant information to estimate and remove vibrations. This paper presents the procedure required to combine the laser stripes and produce a vibration-free result. In order to test the proposed approach, a mechanical prototype is built and used to produce vibrations. Results show excellent performance and indicate that the proposed approach presents a far more efficient solution than traditional methods using a single laser stripe.
A 1.8-V 2.4/5.15-GHz dual-band LCVCO in 0.18-/spl mu/m CMOS technology

A dual band, fully integrated, low phase-noise and low-power LC voltage-controlled oscillator (VCO) operating at the 2.4-GHz industrial scientific and medical band and 5.15-GHz unlicensed national information infrastructure band has been demonstrated in an 0.18-/spl mu/m CMOS process. At 1.8-V power supply voltage, the power dissipation is only 5.4mW for a 2.4-GHz band and 8mW for a 5.15-GHz band. The proposed VCO features phase-noise of -135dBc/Hz at 3-MHz offset frequency away from the carrier frequency of 2.74GHz and -126dBc/Hz at 3-MHz offset frequency away from 5.49GHz. The oscillator is tuned from 2.2 to 2.85GHz in the low band (2.4-GHz band) and from 4.4 to 5.7GHz in the high band (5.15-GHz band).
Écoulements permanents à surface libre en lits composés

Si la direction generale de l'ecoulement est suffisamment rectiligne, la surface libre peut etre consideree comme horizontale sur un meme profil en travers. Par contre, les diverses parties de l'ecoulement peuvent avoir des vitesses tres differentes; le lit majeur encombre de vegetation ou de constructions est tres frequemment plus rugueux que le lit mineur. L'hypothese classique des methodes de calcul utilisees couramment pour rendre compte des ecoulements en section composite est d'admettre qu'il existe une ligne de charge globale qui s'applique aussi a chacun des ecoulements elementaires pris isolement, ce qui revient a admettre que la debitance d'un ecoulement elementaire n'est pas affectee par la presence de lits adjacents
Improved Fuzzy Cognitive Maps for Gene Regulatory Networks Inference Based on Time Series Data

Recently with the advancement of high-throughput sequencing, gene regulatory network inference has turned into an interesting subject in bioinformatics and system biology. But there are many challenges in the field such as noisy data, uncertainty, time-series data with numerous gene numbers and low data, time complexity and so on. In recent years, many research works have been conducted to tackle these challenges, resulting in different methods in gene regulatory networks inference. A number of models have been used in modeling of the gene regulatory networks including Boolean networks, Bayesian networks, Markov model, relational networks, state space model, differential equations model, artificial neural networks and so on. In this paper, the fuzzy cognitive maps are used to model gene regulatory networks because of their dynamic nature and learning capabilities for handling non-linearity and inherent uncertainty. Fuzzy cognitive maps belong to the family of recurrent networks and are well-suited for gene regulatory networks. In this research study, the Kalman filtered compressed sensing is used to infer the fuzzy cognitive map for the gene regulatory networks. This approach, using the advantages of compressed sensing and Kalman filters, allows robustness to noise and learning of sparse gene regulatory networks from data with high gene number and low samples. In the proposed method, stream data and previous knowledge can be used in the inference process. Furthermore, compressed sensing finds likely edges and Kalman filter estimates their weights. The proposed approach uses a novel method to decrease the noise of data. The proposed method is compared to CSFCM, LASSOFCM, KFRegular, ABC, RCGA, ICLA, and CMI2NI. The results show that the proposed approach is superior to the other approaches in fuzzy cognitive maps learning. This behavior is related to the stability against noise and offers a proper balance between data error and network structure.
Current reused LC VCOs

This paper presents current reused voltage controlled oscillator (VCO) topologies by stacking switching transistors in series like a cascode. The VCOs can operate with only half the amount of dc current compared to those of the conventional VCO topologies. Fabricated in 0.18-/spl mu/m CMOS process, a differential VCO operates in a 2.1-GHz band with a phase noise of -110dBc/Hz at 1-MHz offset, and a quadrature VCO operates in a 3.1-GHz band with a phase noise of -102dBc/Hz at 1-MHz offset. The proposed topologies can be adopted for low-power applications.
Scheduling a flow-line manufacturing cell: a tabu search approach

Abstract The performance of two heuristic procedures for the scheduling of a flow-line manufacturing cell was compared. We propose a procedure based on a combinatorial search technique known as tabu search. The new procedure is compared with a heuristic based on simulated annealing which was proposed in earlier research. The scheduling problem addressed here differs from the traditional flow-shop scheduling problem in the sense that we are interested in sequencing part families (i.e. groups of jobs which share a similar setup) as well as individual jobs within each family. The results reveal that the tabu search heuristic outperforms the simulated annealing heuristic by generating 'better solutions' in less computation time.
Geosynthetic-Reinforced Piled Embankments: Comparison of Numerical and Analytical Methods

Geosynthetic reinforced piled embankment systems (GRPESs) have proven to be an effective and economical technique to address the problems posed during the construction of embankments on soft soils. In this paper, the predictions of the performance of GRPESs from three modeling approaches [axisymmetric, three-dimensional (3D) column, and full 3D models] were compared. The numerical models in this study were calibrated against the measured data of GRPESs from a full-scale field test. The load distribution between different components of the GRPES and the tensile force developed in the geosynthetic reinforcement were compared with the results obtained using various design methods and other analytical results. Further, the numerical investigation was extended to examine the tensile force developed among the layers of a multilayer GRPES, and the results were compared with the empirical solutions.
Characterizing the Spatiotemporal Evolution of Building-Stock Age in Poultney, Vermont: A GIS-Based Approach to Improve Thermal Efficiency in Historical Buildings

Many industrialized countries are exploring ways to facilitate the prioritization of efforts targeting improved thermal efficiency in an aging building stock. Older buildings, typically, have inefficient building envelopes and higher energy-consumption patterns relative to new construction, which contributes to higher overall energy consumption at the local and regional scale. Reducing energy consumption by increasing the efficiency of older buildings will result in lower anthropogenic greenhouse gas emissions and help address the growing issues related to climate change. To address these concerns a GIS-based approach is developed to evaluate building-stock age in rural communities with limited access to historical parcel data. This approach involves georeferencing historical Sanborn insurance maps, digitizing building footprints for each year. This methodology is applied to a small town in rural Vermont and a map is produced depicting the spatiotemporal evolution of building construction over the years 1885–1940. 1091 structures built prior to 1941 are identified and it is argued that weatherization efforts should focus on the oldest buildings first and sequentially address younger structures, lowering both energy consumption and greenhouse gas emissions associated with the least-efficient building stock.
Establishing 3D Mandible FEA Model via Clinical CT Images

Aiming at the filature of titanium plates and screws after defective mandible reconstruction surgery, a method named Finite Element Analysis （FEA）was conducted in this paper through FEA software Abaqus with which a 3D model of defective mandible was established. The mandible 3D model was input into the Magics and remeshed. The mandible model was output in the format of . inp file from the Magics and import to Abaqus for converting from triangular meshes to tetrahedral meshes. The tetrahedral meshes totally had 71057 tetrahedral elements and 10720 nodes. The boundary constraints of the mandible 3D model were arranged. The force was applied separately in the direction of vertical, 15° and 30° with the occluding plane (teeth force range when occluding) to analyze the force. The mandible 3D model was established and prepared to be done a biomechanical analysis.