Miracle-dz/UniFAR-FTUs huggingface dataset:
New approach for high-performance PMSM drives without rotational position sensors

A new approach to the position sensor elimination of permanent magnet synchronous motor (PMSM) drives is presented in this paper. With the help of the modern drive technique, the actual rotor position as well as the machine speed can be estimated accurately even in the transient state using the "electrical steady-state" operation concepts. Due to the angle-modification scheme with error-tracking function, the sensorless drive system has robustness to parameter variations. As well as giving a detailed explanation of the new algorithm, the paper presents a wide range of experimental results, demonstrating the feasibility of the proposed method under full operating conditions in the /spl plusmn/50/spl sim//spl plusmn/2000 [RPM] speed range and 0/spl sim/1 per unit (p.u.) load conditions.
Probabilistic Coordination of Heterogeneous Teams From Capability Temporal Logic Specifications

This letter explores coordination of heterogeneous teams of agents from high-level specifications. We employ Capability Temporal Logic (CaTL) to express rich, temporal-spatial tasks that require cooperation between many agents with unique capabilities. CaTL specifies combinations of tasks, each with desired locations, duration, and set of capabilities, freeing the user from considering specific agent trajectories and their impact on multi-agent cooperation. CaTL also provides a quantitative robustness metric of satisfaction based on availability of required capabilities for each task. The novelty of this letter focuses on satisfaction of CaTL formulas under probabilistic conditions. Specifically, we consider uncertainties in robot motion (e.g., agents may fail to transition between regions with some probability) and local probabilistic workspace properties (e.g., if there are not enough agents of a required capability to complete a collaborative task). The proposed approach automatically formulates a mixed-integer linear program given agents, their dynamics and capabilities, an abstraction of the workspace, and a CaTL formula. In addition to satisfying the given CaTL formula, the optimization considers the following secondary goals (in decreasing order of priority): 1) minimize the risk of transition failure due to uncertainties; 2) maximize probabilities of regional collaborative satisfaction (if there is an excess of agents); 3) maximize the availability robustness of CaTL for potential agent attrition; 4) minimize the total agent travel time. We evaluate the performance of the proposed framework and demonstrate its scalability via numerical simulations.
Reconfiguration in sensor networks

To be practical, sensor networks need to adapt to changes in their environment. This thesis explores reconfiguration in sensor networks to endow them with greater adaptability. We study functional reconfiguration in static networks, and spatial reconfiguration in networks with limited mobility and networks whose constituent nodes are highly mobile. In static sensor networks, reconfiguration can be thought of as the ability to dynamically reconfigure nodes in the network to perform different functions over time. We study a tiered sensor network where the roles of microserver and sensor are dynamically assigned. We propose a framework for redesigning services by partitioning the workload in a distributed fashion among the microservers. We apply this distribution formulation to connectivity-based localization and show that it converges to within 10% of the centralized solution in ten iterations. We also show a similar formulation for flow-based routing. In mobile sensor networks, one potential means of reconfiguration is the ability of the network to reposition its nodes using controlled mobility in service of a particular objective. We address the problem of improving connectivity in a robot network by proposing an algorithm for autonomous reconfiguration that causes an initially connected network to be transformed into a biconnected network. First, we show that the robot network biconnectivity problem is NP-hard. We propose a heuristic that uses bearing-only measurements of node neighbors to achieve biconnectivity. Simulations and experiments suggest that this algorithm performs well even when the bearing measurements are coarse (errors upto 30 degrees have little impact on the outcome). As a practical matter, we describe a novel technique to obtain such bearing measurements from commodity radios on simple robots. The biconnectivity algorithm requires a stable connected network. However, experiments reveal that the routing protocol (in our case OLSR) does not necessarily produce routes that are persistant in time. We conjecture that providing location and direction cues improves route stability in robot networks. Test results bear this out - route switches decrease by upto 20% when the routing protocol is given position and directional cues.
Influence of a lossy ground on lightning-induced voltages on overhead lines

A comprehensive study on the effect of a lossy ground on the induced voltages on overhead power lines by a nearby lightning strike is presented. The ground conductivity plays a role in both the evaluation of the lightning radiated fields and of the line parameters. To be calculated by means of a rigorous theory, both fields and line constants need important computation time, which, for the problem of interest, is still prohibitive. The aim of this paper is to discuss and analyze the various simplified approaches and techniques that have been proposed for the calculation of the fields and the line constants when the ground cannot be assumed as a perfectly conducting plane. Regarding the radiated electromagnetic field, it is shown that the horizontal electric field, the component which is most affected by the ground finite conductivity, can be calculated in an accurate way using the Cooray-Rubinstein simplified formula. The presence of an imperfectly conducting ground is included in the coupling equations by means of two additional terms: the longitudinal ground impedance and the transverse ground admittance, which are both frequency-dependent. The latter can generally be neglected for typical overhead lines, due to its small contribution to the overall transverse admittance of the line. Regarding the ground impedance, a comparison between several simplified expressions used in the literature is presented and the validity limits of these expressions are established. It is also shown that for typical overhead lines the wire impedance can be neglected as regard to the ground impedance.
Multiple-input single-output current-mode universal filter using translinear current conveyors

This paper presents a new current-controlled current-mode universal filter with multiple inputs and single output employing one translinear current conveyor (CCCII), one CCCII with controlled current gain and two grounded capacitors. The employment of grounded capacitors makes the circuit ideal for integration. The proposed circuit can provide low-pass, band-pass, high-pass, band-stop and all-pass current responses by appropriately connecting the input terminals. The natural frequency (ωo) and the quality factor (Q) can also be controlled independently and electronically through adjusting the bias currents of the CCCIIs. Furthermore, no critical matching conditions are required for realizing all the filter responses. The characteristics of the proposed circuit are simulated using PSPICE to confirm the theory. Key words: Universal filter, current-mode circuit, translinear current conveyor
Impact of HR Practices on Organizational Citizenship Behavior and Turnover Intentions

In 21st century, human resource is major and most valuable asset of organization. Human resource is one of the major tool for organization that will help to achieve competitive advantage in the age of competition. Without a good human resource, companies cannot establish a good team of professional for their jobs. Great human asset should have such qualities as high satisfaction with their employments, high responsibility towards the organization, high inspiration to serve general society and solid aims to work for the association eagerly and dependably. Organization can upgrade inside capacities to manage present or future difficulties to be looked by an organization through great Human Resource practices. Human Resource Practices is a hierarchical capacity assume a critical part in overseeing workforce through it proactive approach in lessening disparities and also to draw in, create, hold and propel workforces. In that capacity, when organization energizes value and decency, their representatives is anticipated to wind up more dedicated in their activity & job. In the field of HRM, employee turnover is a major problem. Employee turnover is a cause for concern when the best and efficient employees intend to switch towards another organization, and there may be something that organization could do to retain those employees. Most of the Telecom sector in Pakistan faces a serious problem of high employee turnover. Now employees are considered as a main source to achievement of competitive advantage and organizations should give more focus in order to compete in the market with competitors. Organizations higher performance will depend on their incomparable employees; employees would not only adequately perform their required job but exert efforts that are beyond necessities. Employee turnover expectation is the huge reason that gives guidance to hold the specific conduct. This investigation is investigating the effect of HR practices on representative turnover and OCB in Telecom part of Pakistan that is Warid and Mobilink. This exploration will add to the group of writing relating HR practices and effect of HR practices on representative turnover and OCB, in hypothetical casing work will depict the measurements of HR practices for estimation worker turnover aims and OCB. The examination will clarify of how HR rehearses influences worker maintenance and OCB in telecom associations of Pakistan. The investigation will inspect through experimental discoveries in which including descriptive examinations, and regression for finding the effect of HR hones on representative turnover and OCB. Data will be collected using standardized questionnaire administered. Data collected from the sample size of one hundred and fifty people. In this study one hundred and fifty questionnaires were distributed only eighty was returned included in sample size in which forty employees and forty supervisors are included from both the company.
Osteocytic Pericellular Matrix (PCM): Accelerated Degradation under In Vivo Loading and Unloading Conditions Using a Novel Imaging Approach

The proteoglycan-containing pericellular matrix (PCM) controls both the biophysical and biochemical microenvironment of osteocytes, which are the most abundant cells embedded and dispersed in bones. As a molecular sieve, osteocytic PCMs not only regulate mass transport to and from osteocytes but also act as sensors of external mechanical environments. The turnover of osteocytic PCM remains largely unknown due to technical challenges. Here, we report a novel imaging technique based on metabolic labeling and “click-chemistry,” which labels de novo PCM as “halos” surrounding osteocytes in vitro and in vivo. We then tested the method and showed different labeling patterns in young vs. old bones. Further “pulse-chase” experiments revealed dramatic difference in the “half-life” of PCM of cultured osteocytes (~70 h) and that of osteocytes in vivo (~75 d). When mice were subjected to either 3-week hindlimb unloading or 7-week tibial loading (5.1 N, 4 Hz, 3 d/week), PCM half-life was shortened (~20 d) and degradation accelerated. Matrix metallopeptidase MMP-14 was elevated in mechanically loaded osteocytes, which may contribute to PCM degradation. This study provides a detailed procedure that enables semi-quantitative study of the osteocytic PCM remodeling in vivo and in vitro.
Nanopore Long-Read Transcriptomics Profiling Reveals Gene Expression Signatures of Mouse Tumor Endothelial Cells 2H-11

Background:Tumor endothelial cells (TECs) play an indispensable role in tumor growth and metastasis. Compared with normal endothelial cells (NECs), TECs exhibit unique phenotypic and functional heterogeneity in terms of metabolism, genetics, and transcriptomics. It is not only the key to coordinate tumor angiogenesis, but also an important factor of immune regulation in the tumor microenvironment. In recent years, the role of TECs in tumor metabolism and invasion has been continuously reported. However, the research on the mechanism behind the complex functions of TECs is still at the basic stage. We use Oxford Nanopore Technology (ONT) three-generation full-length transcriptome sequencing to detect all genetic structural changes in the transcriptome of mouse TECs 2H-11 and mouse NECs SVEC4-10.Results: In Tumor endothelial cells 2H-11,1847genes are up-regulated and 1202 genes are down-regulated. According to the Gene ontology (GO) enrichment analysis of differentially expressed genes (DEGs), we found that different functional trends related to metabolic processes, developmental processes, localization, immune system processes, and locomotion are the main reasons for the differences. DEGs are mainly enriched in signal pathways related to cancer, immunity and metabolism, involving Pathways in cancer,Antigen processing and presentation , Proteoglycans in cancer, Focal adhesion, MAPK signaling pathway ,Protein digestion and absorption，ECM-receptor interaction，PI3K-Akt signaling pathway and Glutathione metabolism. We also obtained the structural variation of transcripts such as alternative splicing, gene fusion, and alternative polyadenylation and accurately quantified the expression of the transcript. Some of our results have been confirmed in other documents. But other data have not been reported yet, which is the focus of our future exploration.Conclusion: We try to use transcriptomics and bioinformatics methods to characterize tumor endothelial cell-related genes and signaling pathways.It could help better understand the molecular mechanisms of tumor endothelial cells involved in tumorigenesis and development. DEGs in key pathways may be potential diagnostic markers or therapeutic targets of TECs. Our data also provide useful genetic resources for improving the genome and transcriptome annotations of TECs and NECs.
The Role of Birch Tar in Changing the Physicochemical and Biocidal Properties of Polylactide-Based Films

The objective of this study was to produce bactericidal polymer films containing birch tar (BT). The produced polymer films contain PLA, plasticiser PEG (5% wt.) and birch tar (1, 5 and 10% wt.). Compared to plasticised PLA, films with BT were characterised by reduced elongation at break and reduced water vapour permeability, which was the lowest in the case of film with 10% wt. BT content. Changes in the morphology of the produced materials were observed by performing scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis; the addition of BT caused the surface of the film to be non-uniform and to contain recesses. FTIR analysis of plasticised PLA/BT films showed that the addition of birch tar did not change the crystallinity of the obtained materials. According to ISO 22196: 2011, the PLA film with 10% wt. BT content showed the highest antibacterial effect against the plant pathogens A. tumefaciens, X. campestris, P. brassicacearum, P. corrugata, P. syringae. It was found that the introduction of birch tar to plasticised PLA leads to a material with biocidal effect and favourable physicochemical and structural properties, which classifies this material for agricultural and horticultural applications.
A CPW‐fed triple band OCSRR embedded monopole antenna with modified ground for WLAN and WIMAX applications

A coplanar waveguide fed triple band antenna is proposed for wireless local area network (WLAN) and worldwide interoperability for microwave access (WIMAX) applications. The proposed antenna consists of rectangle monopole with modified ground plane and open complementary split ring resonator (OCSRR) loading. The overall size of the antenna is 30 × 40 × 0.8 mm3, which provides Omnidirectional pattern in all three bands. The prototype of antenna is designed, fabricated, and measured. The measured −10 dB impedance bandwidths are 300 MHz (2.40–2.70 GHz), 680 MHz (3.32–4.00 GHz), and 1040 MHz (4.76–5.8 GHz) with resonance frequency at 2.6 GHz,3.4GHz, and 5GHz, respectively, which is suitable for WLAN/WiMAX applications. Parametric study on OCSRR is discussed to validate the results. Simulated and measured results of the antenna are presented and discussed. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2413–2418, 2015
The Role of Service Provider’s Rapport Behavior on Customers’ Empathy

The study is intended to explore the validity of the component system of the rapport behavior of service providers. The purpose of this study was to understand how the components of the rapport behavior of service providers affect rational and emotional empathy. This study is intended to understand the relationship between rational and emotional empathy and customer satisfaction and the effect of customer satisfaction on revisit intentions. The main purpose was to identify the moderating effect of perceived authenticity on the causal relationship between rapport behavior, empathy, and customer satisfaction and revisit intentions. The sampling method used in this study was the judgment sampling, which is a method in which the researcher selects those study subjects that are thought by the researcher to be the most suitable samples for the purpose of the study. The total questionnaire period was a total of three months, from March 15 to May 15, 2020. The total number of valid samples was 1668. Uncommonly attentive behavior, courteous behavior, information-sharing, and connecting behavior, which are components of the rapport behaviors of service providers, were found to have positive effects on rational empathy with the service provider, but common grounding behavior, which is also a component of the rapport behaviors of service providers, was found to have no statistically significant effect on rational empathy with service providers. The rapport behaviors of service providers are judged to play an important role in maintaining and developing strong ties through long-term and continuous interactions with customers.
Forecasting the Post Fracturing Response of Oil Wells in a Tight Reservoir

This paper proposes a two-stage multi-system architecture for forecasting post-fracturing responses in a tight oil reservoir using historical fracturing data. The first stage predicts the 180-day cumulative liquid (oil + water) production directly, and the second stage uses differential correction to predict the prediction error resulting from the first stage. The final prediction is a combination of the two stages. 5-fold cross-validation is used in each stage, resulting in five forecasters for each stage. The average of the five predictions is taken as the output of the corresponding stage. Each of the five forecasters in each stage consists of three independent subsystems (Location, Completion and Fracturing), whose inputs are subsets of the well properties. The Location subsystem is constructed by a weighted average, whereas Completion and Fracturing are constructed by fuzzy logic systems. The parameters of the three subsystems are optimized simultaneously using simulated annealing. The final design achieved over 70% prediction accuracy for more than 96% of the testing wells. The main advantages of our approach are that 1) it does not require a large training dataset; 2) it can cope well with incomplete data entries and uncertainties; and, 3) the redundancy in the input parameters is used to improve accuracy.
Plant Factory: A New Playground of Industrial Communication and Computing

Plant Factory is a newly emerging industry aiming at transforming crop production to an unprecedented model by leveraging industrial automation and informatics. However, today’s plant factory and vertical farming industry are still in a primitive phase, and existing industrial cyber-physical systems are not optimal for a plant factory due to diverse application requirements on communication, computing and artificial intelligence. In this paper, we review use cases and requirements for future plant factories, and then dedicate an architecture that incorporates the communication and computing domains to plant factories with a preliminary proof-of-concept, which has been validated by both academic and industrial practices. We also call for a holistic co-design methodology that crosses the boundaries of communication, computing and artificial intelligence disciplines to guarantee the completeness of solution design and to speed up engineering implementation of plant factories and other industries sharing the same demands.
Mine Power System Reliability

This paper summarizes over a decade of research to apply the principles of reliability theory to mine electrical power systems. The paper can be divided into two major portions. The first portion describes the multifaceted effort to estimate the failure rates of equipment applicable to the mine environment. The second part deals with the use of fault tree analysis to predict the probability of hazardous voltages on the frames of various pieces of mining equipment. The primary emphasis is on underground coal mines but some results have also been developed for other types of mining operations. For the underground coal mine case the analysis has been developed to the point where an estimate of fatalities and lost time injuries is available to compare to historical records. This comparison is reasonably close and instills a great deal of credibility in the modeling effort. This research effort was supported by three U.S. Bureau of Mines contracts, G0144137, G0188097 and J0199119 with George J. Conroy and Dean Ambrose as the technical project officers.
A radiation hardened hybrid spintronic/CMOS nonvolatile unit using magnetic tunnel junctions

Conventional complementary metal-oxide semiconductor (CMOS)-based devices are approaching their physical limits to continue the Moore's law. Spintronic devices that exploit the intrinsic spin freedom of the electron in addition to its fundamental electrical charge show great potential in nanoscale technology nodes. In particular, hybrid spintronic/CMOS technology based on magnetic tunnel junctions (MTJs) has been considered as a very promising approach thanks to the high speed, low power, good scalability and full compatibility of MTJs with CMOS technology. It is also considered as a potential technology for high-reliability electronics due to the intrinsic hardness to the radiation effect of the MTJs. However, hybrid spintronic/CMOS circuits are still vulnerable to the radiation effect due to their CMOS peripheral circuits (e.g. write/read circuits) during the access operations. In this paper, we propose a radiation hardened hybrid spintronic/CMOS nonvolatile unit to address this issue effectively. By using a physics-based pMTJ compact model and a 40 nm CMOS design kit, hybrid simulations are performed to demonstrate the performance of the proposed unit. The simulation results show that the proposed unit is quite robust against radiation effects with less overhead in terms of hardware area and power consumption compared with the previous works.