Miracle-dz/UniFAR-FTUs huggingface dataset:
A general theory to analyse and design wireless power transfer based on impedance matching

We propose a general theory to analyse and design the wireless power transfer (WPT) systems based on impedance matching. We take two commonly used structures as examples, the transformer-coupling-based WPT and the series/parallel capacitor-based WPT, to show how to design the impedance matching network (IMN) to obtain the maximum transfer efficiency and the maximum output power. Using the impedance matching theory (IMT), we derive a simple expression of the overall transfer efficiency by the coils’ quality factors and the coupling coefficient, which has perfect accuracy compared to full-circuit simulations. Full-wave electromagnetic software, CST Microwave Studio, has been used to extract the parameters of coils, thus providing us a comprehensive way to simulate WPT systems directly from the coils’ physical model. We have also discussed the relationship between the output power and the transfer efficiency, and found that the maximum output power and the maximum transfer efficiency may occur at different frequencies. Hence, both power and efficiency should be considered in real WPT applications. To validate the proposed theory, two types of WPT experiments have been conducted using 30 cm-diameter coils for lighting a 20 W light bulb with 60% efficiency over a distance of 50 cm. The experimental results have very good agreements to the theoretical predictions.
Motor vehicle safety levels: considerations for consumers in used vehicle purchasing decisions

The Australasian New Car Assessment and the Used Car Safety Rating Programs are aimed at both promoting improvements in the level of vehicle safety in the Australian vehicle fleet and at providing information to consumers to enable them to select safer vehicles. However, the role of safety features in consumers’ purchase decisions is not well understood, nor is the relative importance of different sources of vehicle safety information. This paper reports the preliminary findings of a survey involving around 175 participants that investigated a range of issues related to the purchase of a used vehicle, including the role of safety features in the purchasing decision and the relative use of sources of vehicle safety information. In particular, it discusses three assumptions: 1. The safety aspects of a vehicle are important to consumers - safety being ranked the joint fifth most important attribute in a prospective future used vehicle purchase. 2. Information from sources like ANCAP and UCSR will influence consumer perceptions of the safety aspects of particular vehicles – nearly 90% of respondents were aware of independent crash testing of vehicles with awareness levels of the ANCAP and UCSR programs of over 46% and 20% respectively. 3. Consumers will seek out information on the safety aspects of vehicles - over half the respondents considered the advice from motoring clubs and magazine road tests on vehicle safety to be very useful while nearly 80% considered the seller of their last purchased vehicle did not inform them very well about its safety features. While these findings show there are encouraging signs of awareness of safety in vehicles, mixed results in other aspects show there are both significant challenges and opportunities ahead to communicate these benefits and encourage the purchase of safer vehicles.
Mobile Telemedicine Application and Technologies on GSM

Usually, most people use cell phone only to community. However, we hope without changing users' habits, using communicating wireless technique and embedding system editing to provide people the media of long-distant caretaking. Contrasting with GPRS and 3G system etc, this research of GSM system especially strives for the combination of popularization, high using and covering rate, and lower fee needed for the patients who need help, to provide the method of diagnosis of blood pressure measurement and include emergency processing function for the patients who need healthy care and emergency help etc.
Octafilar Helical Antenna for Portable UHF-RFID Reader

Octafilar helical antenna (OFHA) is proposed for handheld ultra-high-frequency (UHF) radio frequency identification (RFID) reader. The investigated antenna configuration consists of OFHA placed on reader device in the presence of human hand model. The antenna is designed at UHF band centered at 915 MHz. The antenna return loss, axial ratio, gain, co-polarized and cross-polarized field components are calculated using the finite element method (FEM) and compared with that calculated by finite integration technique (FIT) for verification of the simulated results. A comparison between the performance of the quadrifilar helical antenna (QFHA) and the octafiliar helical antenna (OFHA) designed at 915 MHz in the presence of the reader device and human hand model is investigated. The OFHA introduces high gain, high front to back ratio, good axial ratio and omnidirectional coverage.
ValuED: A Blockchain-based Trading Platform to Encourage Student Engagement in Higher Education

The provision of higher education has been changing ever more quickly in the UK and worldwide, as a result of technological, economic, and geopolitical factors. The Covid-19 pandemic has accelerated such changes. The “student experience”—the interaction of students with their institution and with each other—has been changing accordingly, with less face-to-face contact. In this work, we have explored a way to improve student engagement in higher education. We describe “ValuED”, a blockchain-based trading platform using a cryptocurrency. It allows students both to buy and sell goods and services within their university community and to be rewarded for academic engagement. ValuED involves a reputation system to further incentivise participants. We describe the implementation and piloting of this platform and draw conclusions for its future use. The platform’s source code is publicly available.
A comparative study of the performance of push and pull systems in the presence of emergency orders

Upon receiving emergency orders, managers often expedite the orders when inventories are insufficient to fulfil orders from current stocks. These practices not only disrupt production flow on the shop floor, but also complicate capacity planning because of unexpected set-ups. While the use of safety stock is a clear option that can be used to overcome the impact of emergency orders, the effectiveness of the option needs to be examined. We compare the performance of push and pull systems with explicit consideration of order-expediting and capacity constraints. Using service level, operating costs, and delivery time for late orders as relevant performance measures, we provide insights for managers who suffer from uncertain demand.
Tactical mobile robotic search and rescue mission modules

Foster-Miller, under the sponsorship of LTC John Blitch's DARPA TMR program, has developed a number of prototype payloads that can be fit onto small robotic platforms for the purpose of performing various search and rescue functions. Presently they have been designed for the Lemmings-type vehicle but the intent in to construct them so that they are plug and play modules for a larger variety of systems. The function modules include: modified image intensifiers and thermal cameras for dark terrain search; two-way voice communications; fingerprint identification; door breaching for operation in hazardous environments; water, material and air sampling and monitoring kits; deployable combat casualty rescue nets; and rescue line launchers with fire control. The vehicle is amphibious to 90-ft and has been fitted with various underwater sensors for search and recovery operations. The vehicle can be fitted with a 14, 18 or a 40-in fold-up mast for out of reach operations. This paper will discuss the functionality of the subsystems and how they relate to robotic platforms.
Impact of mobile phone usage on psychological health status and academic performance of under graduate students in a private medical college

Introduction: Mobile Phone Culture is most widely spreading in the present era. It has become an essential part of modern life and is playing a vital role in decreasing distance and increasing communication among people. Mobile phone has affected almost every field of life but its effects on students learning especially at college level are deep and are multidimensional. With the passage of time, the darker side of technology is also revealed. Mobile devices have both positive and negative effects on human health and behaviour. Material and Methods: This is a cross-sectional study using purposive 120 sampling among newly intake of undergraduate students in tertiary care teaching hospital. Those who were absent and, withdraw during data collection as well as uncompleted questionnaire were excluded in the study. A pilot study was administered to 120 undergraduate students who were not participating in the study. Result showed that the students did not have difficulty in understanding and completing the questionnaire. Then, actual study was carried out. Result: Result from this study found 45.0% of students spent 4-6 hours a day to use the smartphone. Meanwhile, 30% of the students spend more than seven hours on and this figure is quite worrying. This is because time allocation for smartphones more than 5 hours is inappropriate for a student who should prioritize academic issues and concentrate on learning rather than social issues as it will affect the academic achievement. The finding of this study showed that most of the students used smartphones to browse social networking sites. Conclusion: It was observed in our study that many students use mobile phones excessively and inappropriately. They are giving more preference for mobile phone usage than their health and academics. As mobile phone usage is highly prevalent among college students their impact on mental health and academic performance should be discussed and judicial use recommended.
Moderne medikamentöse Therapie der interstitiellen Lungenerkrankung bei systemischer Sklerose

Zusammenfassung Die systemische Sklerose mit interstitieller Lungenerkrankung (SSc-ILD) ist mit einem erhöhten Morbiditäts- und Mortalitätsrisiko verknüpft. Da es an zugelassenen Medikamenten mangelt, die den Krankheitsverlauf einer SSc-ILD effektiv beeinflussen, besteht ein hoher Bedarf an neuen Therapieoptionen. Die Behandlung mit immunmodulierenden Therapien sowie der autologen Stammzelltransplantation wird in klinischen Studien aktuell weiter untersucht. Kürzlich belegte zudem eine Phase-III-Studie die positive Wirkung des antifibrotischen Wirkstoffs Nintedanib auf den Verlust an Lungenvolumen und somit die Krankheitsprogression bei Patienten mit SSc-ILD. Eine Kombinationstherapie aus Nintedanib und Mycophenolat könnte basierend auf synergistischen Wirkprinzipien zukünftig einen ergänzenden Behandlungsansatz der SSc-ILD darstellen.
An Experimental Study on Electric Hot Milling for T10A Tool Steel

This paper introduces a kind of electric hot milling method for T10A tool steel and analyses its feasibility. Collect temperature signals and vibration signals in the machining process by a set of signal acquisition system. Afterwards, process these signals by using wavelet transform and wavelet packet transform, compare and analyze them in different working conditions. The results of the study indicate that through comparison between dry milling and electric hot milling, the latter can be more effectively milling tool steel, and improve the cutting tool durability.
Pharmacological Action of Kankasavain Bronchial Asthma Based on Practical Experience: A Review

Ayurveda is among the most important systems of Indian medicine, and as we all know, it is a science of life. After much research, observations, experiments, thoughts, trials, and judgements, the ancient sages developed several types of Ayurvedic remedies.Ayurveda provides us with this health expertise. As opposed to many ailments that may be related to contemporary man's lifestyle, asthma is an old sickness. Bronchial Asthma is caused by a combination of factors. The illness is linked to geographical location, environmental, racial, and behavioral and lifestyle variables. Tamaka Shwasais a condition described in Ayurvedic literature that, based on clinical signs, is quite similar to bronchial asthma. According to conventional medical science, there is no treatment for asthma. Ayurvedic medicines have the potential to be a viable and successful therapy option for bronchial asthma. Ayurvedic medications are utilized for illness treatment all around the globe, thus people all around the globe may have trust in them based on scientific proof. The current study was a review to determine the effectiveness of Kanakasavaon Tamaka Shwasa(bronchial asthma). Kanakasavais a composition that has been used for thousands of years by Ayurvedic physicians to alleviate the symptoms of Tamaka Shwasa.
A novel active line conditioner for a three-phase system

A novel configuration for an active line conditioner is proposed for correcting voltage unbalances in a three-phase AC power system. The proposed system injects a correction voltage V/sub inj/ with proper magnitude and phase in one phase to guarantee balanced voltages at the load terminals. The negative voltage components in the input supply are effectively nullified by the injected voltage. The kVA requirement of the proposed active line conditioner is small, typically 3% for a 10% unbalance in the input supply. The dynamic cancellation of the negative sequence voltage component by the proposed scheme drastically improves the performance of induction-motor-type loads connected to a weak AC system. A thorough analysis of the scheme along with suitable design guides is presented. Selected experimental results on a laboratory prototype active line conditioner are detailed. <<ETX>>
Key factors in tourism management to improve competitiveness in Latin America

PurposeThis paper analyzes tourism competitiveness in Latin America, providing a country-level ranking of tourism competitiveness. The study also identifies which areas of management to focus on in order to increase competitiveness in each case.Design/methodology/approachThe study is based on the variables used by the World Economic Forum (WEF) to measure tourism competitiveness. The DP2 distance method is used to create a synthetic indicator. This method helps identify which areas best explain differences in competitiveness between countries.FindingsIn tourism, the most competitive Latin American countries are Costa Rica, Chile, Panama, Mexico and Uruguay. The areas that best explain the differences between countries relate to cultural and natural resources, the implementation of information and communication technologies (ICTs), international openness and transport infrastructure. These are therefore priority areas for tourism managers.Practical implicationsThis paper provides detailed analysis for each country. The situation in each country is presented in terms of the key areas highlighted by the analysis. This approach can aid the individual decisions of companies and public managers, thus enhancing tourism competitiveness. This greater competitiveness can strengthen the tourism sector, which is crucial in uncertain times.Originality/valueBased on a synthetic indicator, this research offers the first country-level analysis of tourism competitiveness in Latin America. The study is also novel in its ability to detect the areas where action should be taken to improve tourism competitiveness. This analysis offers an alternative to the WEF Travel and Tourism Competitiveness Index (TTCI), which has certain weaknesses. The results can help enhance tourism competitiveness in Latin American countries through the specific recommendations presented in this paper.
Modeling Traffic Safety Benefits of Intelligent Transportation System Technologies at Truck Inspection Facilities: Microscopic Simulation

A microscopic simulation model was developed to capture the traffic safety benefits of using intelligent transportation system (ITS) technologies, including weigh-in-motion scales with variable message signs, at truck inspection facilities. The development of the simulation model was motivated by prevalent safety concerns at congested truck inspection facilities nationwide. Three primary safety components (roadway, driver, and vehicle) were considered in the model. The roadway component focuses on the varying size of truck queues at inspection facilities and safety implications. The driver component captures key human factor elements and their variability, including distributions for perception-reaction time, speed, gap acceptance, headway, and braking characteristics. The vehicular component incorporates the size distribution of vehicles (trucks and nontrucks), proportion of trucks with defective braking systems, and their safety implications with respect to stopping distance. The primary objective for the model is to depict variations in traffic pattern for baseline (pre-ITS) and post-ITS situations. Measures of effectiveness used for evaluating traffic benefits of using ITS technologies include percent reduction in sudden deceleration of vehicles resulting from shock wave phenomena and percent reduction in duration of truck-queue overflow resulting from a high traffic intensity. Results from simulation runs support the hypothesis that the use of ITS technologies at truck inspection facilities significantly reduces the frequency of experiencing the high-risk traffic phenomena (e.g., hard braking and truck-queue overflow). The postulation is made that the reduction in the frequency of high-risk phenomena will translate into a decrease in the likelihood of experiencing crash-related incidents in the vicinity of truck inspection facilities.
Car Branding and Communication Strategy Research Based on Microblogging

Through in-depth research on branding and marketing microblogging theory, summarizes the advantages and methods based automotive marketing microblogging branding strategy, analyze the current situation of the car microblogging marketing, implementation and effectiveness of the monitoring of the development of automobile brand communication strategy will be comprehensive exposition, based on theoretical build car branding and marketing strategy microblogging system.
Effect of mineral admixture on resistance to sulphuric and hydrochloric acid attacks in selfcompacting concrete

This paper presents a detailed experimental investigation of the acid resistance of economical self-compacting concrete (SCC) prepared with natural pozzolan, immersed for up to 12 weeks in sulphuric acid (H2SO4) and hydrochloric acid (HCl) solutions. The results are compared with those from a control concrete and other SCCs prepared with fly ash and limestone filler. The different factors considered in this study were the effect of mineral admixture type and the strength classes (30, 50, and 70 MPa) of the concrete specimens. In total, 12 formulations were tested. Mass and compressive strength losses are the main properties investigated. Scanning electron microscope (SEM) and X-ray diffraction (XRD) analyses were used to better understand the kinetics of deterioration of each type of concrete. The results show the positive influence of natural pozzolan on the behaviour of SCC under both sulphuric and hydrochloric acid mediums.
A compact, low-cost WDM transceiver for the LAN

As the bandwidth requirements of local area networks (LANs) continue to increase, ever-faster fiber-optic links will be required in the backbones which aggregate the traffic of many users. A need has emerged for low-cost 10-Gb/s fiber-optic links in LAN backbones, prompting the IEEE to begin work on a standard for "10-Gigabit Ethernet". To take advantage of the large installed base of multimode optical fiber, as well as low-cost electronics and electrical interconnect technologies, a wavelength-division-multiplexed (WDM) fiber-optic module has been proposed in which four data channels, each transmitting at a data rate of 2.5 Gb/s on a different wavelength, are carried over a single fiber. In this paper, a fully integrated transceiver is described in which four lasers, four detectors, a wavelength multiplexer, a wavelength demultiplexer, and all necessary electronics are contained within a duplex-connectorized module. The component technologies that enable the transceiver to be compact and low-cost are also described.
Tumor protein D54 binds intracellular nanovesicles via an amphipathic lipid packing sensor (ALPS) motif

Tumor Protein D54 (TPD54) is an abundant cytosolic protein that belongs to the TPD52 family, a family of four proteins (TPD52, 53, 54 and 55) that are overexpressed in several cancer cells. Even though the functions of these proteins remain elusive, recent investigations indicate that TPD54 binds to very small cytosolic vesicles with a diameter of ca. 30 nm, half the size of classical transport vesicles (e.g. COPI and COPII). Here, we investigated the mechanism of intracellular nanovesicle capture by TPD54. Bioinformatical analysis suggests that TPD54 contains a small coiled-coil followed by several amphipathic helices, which could fold upon binding to lipid membranes. One of these helices has the physicochemical features of an Amphipathic Lipid Packing Sensor (ALPS) motif, which, in other proteins, enables membrane binding in a curvature-dependent manner. Limited proteolysis, CD spectroscopy, tryptophan fluorescence and cysteine mutagenesis coupled to covalent binding of a membrane sensitive probe show that binding of TPD54 to small liposomes is accompanied by large structural changes in the amphipathic helix region. TPD54 binding to artificial liposomes is very sensitive to liposome size and to lipid unsaturation but is poorly dependent on lipid charge. Cellular investigations confirmed the key role of the ALPS motif in vesicle targeting. Surprisingly, the vesicles selected by TPD54 poorly overlap with those captured by the golgin GMAP-210, a long vesicle tether at the Golgi apparatus, which displays a dimeric coiled-coil architecture and an N-terminal ALPS motif. We propose that TPD54 recognizes nanovesicles through a combination of ALPS-dependent and -independent mechanisms.
A Survey of Emerging Materials for Revolutionary Aerospace Vehicle Structures and Propulsion Systems

Abstract The NASA Strategic Plan identifies the long-term goal of providing safe and affordable spaceaccess, orbital transfer, and interplanetary transportation capabilities to enable scientific research,human and robotic exploration, and the commercial development of space. Numerous scientificand engineering breakthroughs will be required to develop the technology required to achievethis goal. Critical technologies include advanced vehicle primary and secondary structure,radiation protection, propulsion and power systems, fuel storage, electronics and devices, sensorsand science instruments, and medical diagnostics and treatment. Advanced materials withrevolutionary new capabilities are an essential element of each of these technologies. A surveyof emerging materials with applications to aerospace vehicle structures and propulsion systemswas conducted to assist in long-term agency mission planning. The comprehensive surveyidentified materials already under development that could be available in 5 to 10 years and thosethat are still in the early research phase and may not be available for another 20 to 30 years. Thesurvey includes typical properties, a description of the material and processing methods, thecurrent development status, and the critical issues that must be overcome to achieve commercialviability.