Miracle-dz/UniFAR-FTUs huggingface dataset:
Pérdidas Joule en alimentadores que transportan corrientes armónicas en baja tensión Joule losses in feeders that transport harmonic currents in low voltage

A study of Joule losses in electrical feeder lines carrying harmonic currents is presented. Different formulae proposed in the literature were used to estimate the neutral current and electrical losses. In the environment of the Alternative Transients Program, different levels of harmonic distortion were simulated, arriving at findings that show that losses may become considerably higher than in the condition in which active power without distortion is carried. A real case and the importance of reducing the harmonic content associated with losses are analyzed.
Phylogenetic relationships of a rabies virus isolate in Costa Rica

Introduction: The sylvatic cycle of rabies is a significant sanitary burden in Central America. The Costa Rican government monitors cases since 1985 and infections from bats are still reported for wild animals, livestock, and humans, generating a need of further pathogen characterization in the region. Objective: To compare rabies phylogenetic analyses from complete genomes with nucleoprotein gene studies. Methods: For the phylogenetic analyses we used four rabies tissue samples collected in 2018, and generated complete genomes by Next-Generation sequencing (NGS). We also extracted RNA from tissues of confirmed cases and generated ssDNA using several primers. Double-stranded DNA was generated and used to generate genomic libraries. Results: We describe, for the first-time, the complete genome of four sequences of the rabies virus isolated in Costa Rica in 2018. Complete genome trees resembled the topology of nucleoprotein gene trees. All isolates were related to Desmodus rotundus. One sample group into Lineage (L)2, and the remaining samples group in L1, matched previous reports from regional rabies viruses. Conclusion: Our method produces valid viral assemblies from clinical specimens without target enrichment or viral isolation.
Lumped capacity thermal circuit diagram of active chip cooling schemes

There is a strong need to improve our current capabilities in thermal management and electronic cooling, since estimates indicate that IC power density level could reach 50 W/cm in the near future. This paper presents an innovative approach for thermal modeling of active cooling schemes. It is shown that the principles of energy conversion can be used to overcome the problems of thermal resistance narrowing. Cooling schemes such as mesoscale vapor compression refrigeration, liquid cooling, thermoelectric microcoolers and microchannel heatsinks are discussed and compared relative to heat dissipation potential.
Dynamic roles of social presence and individual differences in social TV platforms

These days, many individuals engage in a unique form of TV viewing that includes a simultaneous act of watching television content and talking about it with others in a mediated environment. This phenomenon is commonly referred to as social TV viewing. Responding to the popularity of this form of TV viewing behavior, the present study examines the individual differences of the social TV viewing experience, particularly with regard to different communication platforms (e.g. private vs. public). Based on the data collected from an online survey, primary findings indicate that extroverted and lonely individuals have different social TV viewing experiences such as preferences for a particular type of platforms for social TV viewing. Further, social presence plays an important role in the understanding of social TV enjoyment in private and public platforms.
Proposing a Performance and Change Management Framework

The literature entitled results of implementing the performance measurement and management process in Arab countries may be totally different than the results reached when implementing it in Western countries because of cultural aspects which mean that culture is an important aspect when using performance measurement within an organization or country as the results may fail only because of culture. In turn, the change management will change the organizational state from the undesirable "before" to an improved or desirable "after" state as it takes culture into consideration when implementing change which can help in the performance measurement and management process. The purpose of this paper is to propose a framework that links the performance measurement and management process to the change management framework in order to be used in the Arab countries to overcome the cultural problems that hinder progress.
Urban positioning: 3D mapping‐aided GNSS using dual‐frequency pseudorange measurements from smartphones

A smartphone with a highly sensitive antenna receiving numerous unhealthy measurements suffers from non-line-of-sight (NLOS) reception and multipath effects. 3D mapping-aided (3DMA) GNSS has been proven to be effective in urban environments. However, the multipath effect remains challenging for urban positioning. In nature, the new GNSS civilian L5-band signal with a shorter chip length shows a much better resistibility to multipath than the conventional L1-band signal. Therefore, this study integrated the multi-constellation L5-band measurements into 3DMA GNSS to improve the positioning performance in urban canyons, namely the L1-L5 3DMA GNSS. Furthermore, this study compares different approaches on the receiver clock biases estimation for 3DMA GNSS. Finally, the integration of different 3DMA GNSSs is presented. The experiments conducted using smartphone data show that the L1-L5 3DMA GNSS is available for a better position solution than the 3DMA GNSS with L1-band only, thereby achieving a positioning accuracy within 10 m on average.
Author’s response to PR Tregenza and E Ng

Taking the case, outlined by Dr Tregenza, of windows in the side of a tall vertical recess receiving a flow of light at a glancing horizontal angle. A laser cut panel with the laser cuts vertical, hinged to the near vertical edge of the window and swung out through 458 will intercept the horizontal flow of light and redirect it through 908 and horizontally into the room. A conventional mirror, hinged to the far vertical edge of the window will intercept and redirect light in a similar manner. Usually the available illuminance in a deep vertical recess arrives, on average, from some modest elevation angle, typically 308 above the horizontal. The vertical laser cut panel or the vertical conventional mirror panel will redirect the light through 908 and, at 308 downwards, into the room. In order to illuminate the rear of the room it is desirable that the light be redirected into the room near horizontally. This can be achieved by rotating the laser cut panel about the normal to its face by about 308 or by rotating the conventional mirror panel about the horizontal axis parallel to its face by about 308. In each case the panel edge is no longer collinear with the vertical edge of the window. This is a major problem with a conventional mirror. However, if the cuts in the laser cut panel are made 308 off vertical rather than vertical the simple vertical orientation of the panel against the edge of the window may be retained. Redirection of light by laser cut panel can easily exceed 908. This is sufficient to accommodate most situations in windows. However, two or more opposed laser cut panels are used in skylights for the more complex task of admitting low elevation light while rejecting high elevation light*/useful in sunny climates. Dr Ng also makes several relevant comments:
Effect of Vinasse Application on Soil in Sugarcane Fields

The article mainly regards the soil of sugarcane fields in Guangxi as the research object. The study will discuss the changes of the sugarcane soil after vinasse application, including physical and chemical properties of soil, heavy metals content, soil microorganism and soil enzyme activities. The results showed that, vinasse application can reduce soil pH, improve the total N,P,K content; decrease the soil heavy metals, showing a significant impact on Cd. In addition, the influences to the number of culturable bacteria in the soil were more obvious than to the number of fungi and actinomycetes. And the activity of invertase in soil was also improved, which was advantaged of the carbon cycle in the soil. In short, vinasse can be used as a kind of liquid fertilizer to improve soil fertility and protect micro ecological environment of the soil.
Effect of GNPs on the Piezoresistive, Electrical and Mechanical Properties of PHA and PLA Films

Sustainability has become the primary focus for researchers lately. Biopolymers such as polyhydroxyalkanoate (PHA) and polylactic acid (PLA) are biocompatible and biodegradable. Introducing piezoresistive response in the films produced by PLA and PHA by adding nanoparticles can be interesting. Hence, a study was performed to evaluate the mechanical, electrical and piezoresistive response of films made from PHA and PLA. The films were produced by solvent casting, and they were reinforced with graphene nanoplatelets (GNPs) at different nanoparticle concentrations (from 0.15 to 15 wt.%). Moreover, cellulose nanocrystals (CNC) as reinforcing elements and polyethylene glycol (PEG) as plasticizers were added. After the assessment of the nanoparticle distribution, the films were subjected to tests such as tensile, electrical conductivity and piezoresistive response. The dispersion was found to be good in PLA films and there exist some agglomerations in PHA films. The results suggested that the incorporation of GNPs enhanced the mechanical properties until 0.75 wt. % and they reduced thereon. The addition of 1% CNCs and 20% PEG in 15 wt. % GNPs’ tensile values deteriorated further. The PHA films showed better electrical conductivity compared to the PLA films for the same GNPs wt. %. Gauge factor (GF) values of 6.30 and 4.31 were obtained for PHA and PLA, respectively.
Google’s Driverless Cars Run into Problem: Cars with Drivers

This article updates readers on driverless cars and the newly-discovered issue of integrating the “correct” style of autonomous vehicles with the messy world of live human drivers. Focusing on Google’s driverless cars, the authors note that the cars regularly perform quick, evasive maneuvers or exercise caution in ways that, while correct, may be more cautious than the other vehicles on the road. The article discusses lane departure technology, auditory warning systems in vehicles, adaptive cruise control, teaching autonomous vehicles to be more confident, coping with poorly-parked vehicles, vehicle behavior at signalized intersections, and current testing at Google designed to smooth out the relationship between the car’s software and the human drivers. A final section consider the positive impact of autonomous vehicles and other driver assistance strategies to help when drivers are distracted by cell phones and other in-car technology. The article includes a short video (2.5 minutes) that shows the Google self-driving car.
A Resolution-Improved Imaging Algorithm Based on Uniform Circular Array

Radar imaging can provide important information of target for recognition. However, due to the limited azimuth resolution, it is difficult to improve the imaging quality of the existing imaging technology based on the uniform circular array (UCA), due to the Bessel function modulation in the frequency domain of the echo received by the UCA. A resolution-improved imaging method based on the uniform circular array antenna (UCA) is proposed. The time–frequency dual relationship between vortex electromagnetic echo and UCA echo is deduced; on this basis, the Bessel function modulation compensation method is constructed to realize the azimuth high-resolution imaging of the target. The algorithm process is based on a UCA echo, which is independent of vortex electromagnetic waves. Theoretical analysis and simulation show that, compared with the existing vortex electromagnetic wave radar imaging methods, the azimuth resolution of the proposed method is improved.
A low-profile power converter using printed-circuit board (PCB) power transformer with ferrite polymer composite

A new design of low-cost and low-profile power transformer is presented in this paper. The manufacturing cost of a power transformer can be reduced using the proposed printed-circuit board (PCB) transformer. The transformer windings are etched on the opposite sides of a double-sided PCB. Self-adhesive ferrite polymer composite (FPC) sheets are stuck on the two PCB surfaces to shield the magnetic flux induced from the transformer windings. The PCB transformer does not require manual winding and bobbin. A power converter prototype employing the PCB transformer has been implemented. The technique of choosing the optimum switching frequency of the power converter using the PCB transformer is addressed in this paper. The maximum power delivered from the prototype is 94 W. The maximum efficiency of the power converter is 83.5%.
RESONANCE EFFECTS DUE TO CONDUCTOR TRANSPOSITION IN THREE-PHASE POWER LINES

This paper is concerned with the effects produced by conductor transposition in long overhead three-phase power lines. We conduct a frequency domain analysis that shows for the first time to our knowledge that the modal attenuation constants and modal phase veloci- ties characterizing the transmission line structure exhibit a repetitive resonant behavior for frequencies such that the overall transposition cycle length gets close to an integer multiple of one half wavelength. Consideration of these resonance phenomena is of major importance and should be taken into account in a variety of situations, PLC com- munications, EMI, and line transient studies.
Buyer-supplier relationships in industrialized building

Close collaboration is considered important; but is close collaboration for all purchases necessary to create value-in-production? In construction as well as in other industries, companies purchase a variety of items that require different amounts of attention to the relationship with suppliers. Buyer-supplier relationships are investigated in relation to how they bring value-in-production in the industrialized building sector. An adaptation of the Kraljic model is applied to the context of industrialized housebuilding in Sweden. Different relationships and different purchased items are classified with the aim of revealing patterns that may prove useful when determining purchasing strategies intended to create value-in-production. Purchasing strategies were studied through data collection at four industrialized housebuilders. Analysis of these strategies suggests that the total product offer from suppliers in terms of customization, logistics and standardization plays an important role in the choice of suppliers in order to satisfy the requirement for efficient production. Long-term relationships enable the development of a specific way of working that adds value-in-production. A new purchasing portfolio model for determining the effectiveness of purchasing strategies on the production process is thus presented, where products are classified according to value-in-production.
On the feasibility of four-switch three-phase BLDC motor drives for low cost commercial applications: topology and control

The main purpose of this paper is to develop low cost four-switch brushless DC (BLDC) motor drives for practical industrial applications. To drive this system effectively, a novel direct current controlled PWM scheme is designed and implemented to produce the desired dynamic and static speed and torque characteristics. Also, the feasibility of the four-switch converter is extended to the two-phase BLDC motor drives and the six-switch converter for power factor correction and speed control. The operational principle of the four-switch BLDC motor drive and the developed control scheme are theoretically analyzed and the performance is demonstrated by the simulation and experimental results, along with high-speed DSP, TI TMS320C F243.
Reliability Improvement of Gate-All-Around SONOS Memory by Joule Heat From Gate-Induced Drain Leakage Current

Endurance to cyclic program/erase (P/E) in a gate-all-around (GAA)-based SONOS flash memory device is improved by Joule heat, which was driven by gate-induced drain leakage (GIDL) current (<inline-formula> <tex-math notation="LaTeX">${I}_{\text {GIDL}}$ </tex-math></inline-formula>) with a current level of microamperes. By use of COMSOL simulation, induced temperature (<inline-formula> <tex-math notation="LaTeX">${T}$ </tex-math></inline-formula>) by the <inline-formula> <tex-math notation="LaTeX">${I}_{\text {GIDL}}$ </tex-math></inline-formula> is higher at the GAA with the ONO gate dielectrics than at a GAA with a thermal gate oxide due to the confined heat inside a silicon nanowire channel wrapped by a relatively thick ONO. Furthermore, <inline-formula> <tex-math notation="LaTeX">${T}$ </tex-math></inline-formula> is high enough to cure the damage from the iterative P/E operations. For a quantitative evaluation of the damage level before and after cyclic P/E, border trap density (<inline-formula> <tex-math notation="LaTeX">${N}_{\text {bt}}$ </tex-math></inline-formula>) in a tunneling oxide was analyzed with the aid of low-frequency noise (LFN) measurements. The damage was almost fully cured by <inline-formula> <tex-math notation="LaTeX">${I}_{\text {GIDL}}$ </tex-math></inline-formula> without an external Joule heater or structural modifications because it is always around a MOSFET.
Tuning fuzzy ship autopilots using artificial neural networks

This paper is concerned with an investigation into the use of artificial neural networks in the design of fuzzy autopilots for controlling the non-linear yaw dynamics of a modern Royal Navy warship model. Artificial neural networks are used to tune the consequent portion of the fuzzy conditional statements which constitute the fuzzy autopilots and comparisons are made between several training algorithms and two different network structures. Results are presented to show the viability of such an approach and that effective designs can be produced.
Analysis of a Microstrip Leaky-Wave Antenna Loaded with Shorted Stubs

A new theory is provided to analyze a novel microstrip leaky-wave antenna (MLWA) with shorted stub loading, used for fixed-frequency beam steering applications. Formulas for calculating the radiation angle of MLWA with stub loading are deduced. The radiation angle estimated theoretically agrees very well with the rigorous numerical result calculated with the finite difference time domain (FDTD) method. This new theory can be used to explain the MLWA behavior with any reactive element loading, if the input admittance of the reactive element is known.
DESIGNANDFABRICATIONOFA MICROCOULTERCOUNTER WITH THINFILMELECTRODES

We report anewapproach formicro Coulter counter withthin film electrodes. Traditional Couilter counter measures DC resistance change tosense particles passing through anaperture between twoflowchambers. Oneofthe, biggest challenges to miniaturize thedevice istoovercome thelarge resistance encountered. We propose anewapproach tousethin film metal electrodes inmicron size ran:ge fbrsensing. Resolution canbeimproved andit's easyfbrsystem integration. A device based on: this approach wasbuilt an:d tested.
Design Optimization of MEMS Based LLC Tunable Resonant Converter for Power Supplies on Chip

In this paper, a novel MEMS based LLC converter is proposed for on chip power supplies. The design is optimized based on commercially available Metal MUMPs process for fabrication. The resonant frequency is optimized at 20MHz and MEMS based variable capacitor is fabricated on the chip to tune the peak resonance frequency of circuit which varies due to the load variations. The Design is simulated in FEM based numerical software COMSOL and Intellisuite. According to analysis the magnetizing inductance of 42nH and leakage inductance of 40nH has been achieved from 16 mm2 rectangular coil transformer. The total capacitance of 1500pF has been achieved from parallel plate capacitors and variation of 3pF has been achieved from variable capacitor.
Production and bio-active potential of old tomato cultivars originating from former Yugoslavia.

Two old tomato cultivars (Sarajevski jabucar and Novosadski jabucar) have been studied for the production and bio-active potential. Investigation was performed in Burmir, Sarajevo, BH. The research included fruit weight and the yield of the fresh fruits per hectare. Lycopene was found in fresh fruits both in physiological and technological maturity. Fruit weight was significantly higher for Sarajevski jabucar than for Novosadski jabucar. Lycopene level in Sarajevski jabucar in physiological maturity was from 6.20 to 9.95, and in technological from 8.35 to 13.60 mg per 100 grams of fruit. Old varieties that have become domestic in the Balkan belong to genotypes rich in lycopene. The production potential was at the satisfactory level in some growing areas.
INFLUENCE FACTORS OF THE TACIT KNOWLEDGE ELICITATION PROCESS: SYSTEMATIC LITERATURE REVIEW

Goal: This systematic review aimed at highlighting and performing an integrated discussion of the factors of the tacit knowledge elicitation process. Design/Methodology/Approach: The research method adopted in this study was (PRISMA) Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The databases, Science Direct, Web of Science, Scopus, and Emerald Insight were chosen based on the possibility of finding articles from collections such as Elsevier, Springer e Taylor & Francis. Search terms related to “knowledge Elicitation” are the following: "knowledge Elicitation" OR "knowledge acquisition" AND technique AND “Tacit Knowledge". Results: The main research findings listed by the article were the inclusion of a knowledge engineer considering the SECI model, the indication of predictability in the perception of episodic knowledge in a tacit knowledge elicitation process, and the hybrid adoption of knowledge elicitation techniques. Limitations of the research: The selection criteria were based only on articles written in the English language and taking into consideration the period from 2008 to 2020. Originality/value: The structure of this article was based on the indication of theoretical gaps and the need to deepen the themes underlying the process of eliciting tacit knowledge, which allowed a systematic exposure of a broad scenario that represents the scope and complexity.
Early Development of Modern Vertical and Horizontal Axis Wind Turbines: A Review

This paper reviews the initial development of the design and operation of modern vertical and horizontal axis wind turbines, with the aim of comparing the development of the two types. Application in developing countries concentrates on the Savonius rotor. The review aims to record important early developments, including the years following the first oil crisis of 1973.