Miracle-dz/UniFAR-FTUs huggingface dataset:
Wireless Power Transfer Based on Spider Web–Coil for Biomedical Implants

A biomedical implant (BMI) is a device that allows patients to monitor their health condition at any time and obtain care from any location. However, the functionality of these devices is limited because of their restricted battery capacity, such that a BMI may not attain its full potential. Wireless power transfer technology–based magnetic resonant coupling (WPT–MRC) is considered a promising solution to the problem of restricted battery capacity in BMIs. In this paper, spider web coil–MRC (SWC-MRC) was designed and practically implemented to overcome the restricted battery life in low–power BMIs. A series/parallel (S/P) topology for powering the BMI was proposed in the design of the SWC-MRC. Several experiments were conducted in the lab to investigate the performance of the SWC-MRC system in terms of DC output voltage, power transfer, and transfer efficiency at different resistive loads and distances. The experimental results of the SWC-MRC test revealed that when the Vsource is 30 V, the DC output voltage of 5 V can be obtained at 1 cm. At such a distance (i.e., 1 cm), the SWC-MRC transfer efficiency is 91.86% and 97.91%, and the power transfer is 13.26 W and 23.5 W when 50- and 100- $\Omega $ resistive loads were adopted, respectively. A power transfer of 12.42 W and transfer efficiency of 93.38% were achieved at 2 cm for when a 150- $\Omega $ resistive load and a Vsource of 35 V were considered. The achieved performance was adequate for charging some BMIs, such as a pacemaker.
Public Space and the Contracting-out of Publicness: A Framework for Analysis

During the last two decades the literature on public space has registered the emergence of alternative forms of pubic space provision that depart from the traditional model of direct state ownership and management. The picture that emerges is a complex one, not so much one of privatization, but instead one of complex redistribution of roles, rights and responsibilities in public space governance to a range of social actors beyond the state. This paper discusses an approach to understanding the forms of publicness implicit in alternative forms of public space governance. Issues of rights, access, accountability and control could be examined in public space governance arrangements based on contracts, legal agreements and performance management mechanisms involving private and voluntary entities instead of the traditional public sector processes of policy delivery and accountability. The paper proposes a framework for investigating how ‘publicness’ is constructed and maintained through these arrangements.
Transferability of Hurricane Evacuation Choice Model: Joint Model Estimation Combining Multiple Data Sources

Inferences on hurricane evacuation behavior are usually drawn through developing empirical models. These models are estimated using data that are specific to a given hurricane context. One important issue, therefore, is whether such models are applicable to different hurricane contexts. This paper investigates this transferability issue of evacuation choice models across different hurricanes. Initially, we estimate three separate models of the binary decision to evacuate or not, using data sets from three hurricanes (Andrew, Ivan, and Katrina) that occurred at different periods. Then a joint model is estimated combining these three evacuation data sources. When estimating the model jointly, the differences among the scale parameters of the data sets are specifically accounted for. The results from joint and separate models are then statistically tested to evaluate whether evacuation decision model parameters are transferable across different hurricane contexts. The result from the statistical test suggests that the parameters of the evacuation choice models are transferable over different hurricane contexts in similar regions, an important implication for policymakers and emergency preparedness agencies. DOI: 10.1061/(ASCE)TE.1943-5436 . 0000365. © 2012 American Society of Civil Engineers.
Loss-freedom, Order-preservation and No-buffering: Pick Any Two During Flow Migration in Network Functions

Network Functions (NFs) provide security and optimization services to networks by examining and modifying packets and by collecting information. When NFs need to be scaled out to manage higher load or scaled in to conserve energy, flows need to be migrated from one instance of an NF, called the source instance, to another, called the destination instance, or from one chain of instances to another chain of instances. Before flows are migrated, the state information associated with the source instance needs to be migrated to the destination instance. Packets that arrive at the destination instance meanwhile need to be either buffered or dropped until the state information is migrated, for correct functioning of some stateful NFs, while for some others, the destination NF may continue to function. We define the properties of Loss-freedom, where the flow migration system does not drop packets, No-buffering, where it does not buffer packets, and Order-preservation, where it processes packets in the same manner as the source NF, if there was no flow migration. We formalize these properties, for the first time, and prove that it is impossible for a flow migration algorithm in stateful NFs to guarantee satisfying all three of the properties of Loss-freedom (L), Order-preservation (O) and No-buffering (N) during flow migration, even if messages or packets are not lost. We demonstrate how existing algorithms operate with regard to these properties and prove that these properties are compositional.
Experimental Study on Impeller Blade Vibration During Resonance: Part 2—Blade Damping

Forming the second part of a two-part paper, the estimation of damping is presented here. Part 1 discusses the experimental approach and the results on blade resonant response measurements. In the study of forced response damping is a crucial parameter which is measured to quantify the ability of a vibrating system to dissipate vibratory energy in response to a given excitation source. The blading of turbomachinery components is particularly prone to forced response excitation which is one of the major causes of high cycle fatigue failure during operation. In turbocharging applications forced response can not be avoided due to a number of factors, i.e. change in speed, inlet bends or obstructions in the flow field. This study aims to quantify the damping parameter for the lightly damped blades of a centrifugal compressor. The impeller geometry is typical of turbocharging applications. As a first step the non-rotating impeller was excited using piezos and the transfer function was derived for a number of pressure settings. Both circle-fit and a curve-fit procedure were used to derive material damping. In the second step, measurements were taken in the test facility where forced response conditions were generated using distortion screens upstream of the impeller. Main blade strain response was measured by sweeping through a number of resonant points. A curve-fit procedure was applied to estimate the critical damping ratio. The contribution of material and aerodynamic damping was derived from a linear curve fit applied to damping data as a function of inlet pressure. Overall, it will be shown that aerodynamic damping dominates the dissipation process for applications with inlet pressure of 1 bar. Damping was found to depend on the throttle setting of the compressor and where applicable CFD results were used to point towards possible causes of this effect.Copyright © 2008 by ASME
Impact of Differences in Driver-Desired Speed on Steady-State Traffic Stream Behavior

This paper analyzes steady-state behavior of car-following models within state-of-the-practice commercial traffic simulation software. Car-following models are classified on the basis of their uncongested regime steady-state behavior into two categories. Apart from the INTEGRATION software that uses the Van Aerde car-following model, the research demonstrates that all state-of-the-practice traffic simulation software assumes a constant desired speed that is insensitive to the flow level within the uncongested regime. The paper then quantifies the effect of speed variability, as a common approach to model driver differences with respect to desired speed, on steady-state traffic stream behavior. The paper not only demonstrates that speed variability has a significant impact on the speed at capacity but also develops procedures for calibrating the steady-state relationship while accounting for the effects of speed variability. Finally, the effectiveness and validity of the proposed procedure are demonstrated with an example.
Design and analysis of thick-film integrated inductors for power converters

This paper describes the design procedures followed to obtain a thick-film inductor for its application in DC/DC power microconverters. The main characteristics of the new technology used are commented upon and design equations are given. Results are compared to those obtained by means of finite-element analysis tools. Details of some thick-film inductors developed with this technique (within the framework of the IMPASS Esprit Project (number 23910), financed by the European Community) are also given. The inclusion of one of these inductors in a 5-to-3.3-V DC/DC converter contributes to obtaining a very high power density: 6.25 W/cm/sup 3/.
Influence of curing on durability performance of concrete

Durable concrete experiences a long service life in most natural environments without deterioration. One of the important factors that influence the durability of concrete is curing. This paper represents a comprehensive investigation to study the effect of method and duration of curing on concrete durability. The techniques of curing used in this study encompass the majority of methods commonly encountered on site. The methods of curing were freshwater, wet burlap, plastic film, liquid membrane and air (no curing). The study considered different durations of curing of 3, 7, 14, 21 and 28 days. Concrete specimens were exposed to various conditions of deterioration: sulphate attack, cycles of wetting and drying, temperature changes, high temperature, fire and corrosion of reinforcing steel. Compression, tensile strength, weight and corrosion of steel were then monitored. Each of these parameters is utilized to evaluate the durability performance. Durability performance is defined as the ratio between a mon.
Lightweight Apparel Classification with Residual and Inverted Residual Block based Architectures

Classification of Apparel and Clothing has been the centerpiece in recommendations made for Fashion and E-commerce. This paper explores the applicability of light Deep Learning based classifiers for fast and accurate category classification of images. We use Residual and Inverted Residual Network Based Convolutional Neural Network models, and demonstrate their ability to generalize well and overcome the problems of overfitting. Extensive evaluation on a large dataset with highly class-imbalanced data suggests that the proposed models are fast, compact, and exceed the performance of state-of-the art models with up to approximately 10 times fewer parameters and 4.5 times the speed.
Mobility-Enabling Edge Cloud Infrastructure: Testbed and Experimental Evaluation

Mobility management is a key feature of mobile edge computing. We present an edge cloud infrastructure testbed to explore various mobility scenarios. The design objection of this testbed has been a flexible open platform based on commodity hardware that can easily be scaled with more edge devices and compute resources to perform various edge cloud experiments. As first experiments on our testbed, we have investigated the feasibility of task migration among edge devices caused by edge device overload and unpredictable user movements. We describe the migration process and present some measurements to demonstrate the feasibility.
Comparison of US (FAA) and French (DGAC) airport pavement HMA

Hot mix asphalt (HMA) design for commercial airports in the USA is performed in accordance with the Federal Aviation Administration Advisory Circular 150/5370-10E, ‘Standards for Specifying Construction of Airports’, Item P-401 – Plant Mix Bituminous Pavements (2009). HMA for airports in France is designed in accordance with ‘Bituminous mixtures and surface dressings for airport pavements – Guide to the application of standards’ developed by French Civil Aviation Center (STAC). This paper presents test results from the laboratory characterisation of HMA used in USA and French airport pavements.
A new quasi-static multi-degree of freedom tapered roller bearing model to accurately consider non-Hertzian contact pressures in time-domain simulations

The accuracy of the fatigue life calculations in rolling bearing simulations is highly dependent on the precision of the roller-raceway contact simulations and the ability to accurately include structural deflections of the supporting structure. Several different methods exist to simulate the pressure distributions, and in time-domain bearing simulations, where many contacts need evaluation, the simple and time efficient methods are more popular. These methods underestimate the fatigue life reduction due to roller end effects, overload and misalignments. Furthermore, existing time-domain rolling bearing models assume that the bearing rings remain circular, which can be a poor approximation, especially for large and flexible supported bearings. This paper presents a new multi-degree of freedom frictionless quasi-static time-domain tapered roller bearing model that uses high precision elastic half-space theory to simulate the contact pressures and allows for an arbitrary stiffness of the outer ring supporting structure. The potentially higher computational demand using the advanced contact calculations is addressed by pre-processing series of contacts at different centreline approaches and roller tilt angles, which are used for interpolating contact results during time-domain simulations. The stiffness of the outer ring supporting structure is included by condensing a FE-model using an assumed modes method also known as modal flexibility. It is demonstrated that this new model allows for simulation of bearing misalignments and structural deflections, and that the effect of these conditions is directly evaluated in a detailed fatigue life analysis.
Experimental investigation of photonic millimeter‐wave, beam‐splitter‐type coupler in image guide technology

Optical control of the coupling characteristics of beam‐splitter‐type directional couplers in image guide technology is investigated experimentally at W‐band. A highly resistive thin silicon lamella is used as a photosensitive beam splitter inside a rectangular junction of two image guides with dielectric strips made of quartz. Measurement results are compared with theory based on a combined approach of the effective dielectric constant method and geometrical optics assuming a uniform photoinduced plasma density inside the semiconductor lamella. The coupling of the device can be controlled optically from about 10 to 23 dB with a variation of less than 2 dB across the whole W‐band. Apart from the application as a directional coupler with controllable coupling characteristics the structure can be used as a cross‐over switch. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2526–2530, 2007; Published online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.22740
Machine Learning Approaches for Marketing Campaign in Portuguese Banks

Bank is a type of business that deals with saving, circulation of money, deposits and others. The number of services provided by banks is very diverse, this depends on the capabilities of each bank. The more capable and better the bank is, the more services it will offer. Introducing the product directly has been commonly used for various industries, one of them is the banking industry. In directly introducing products, banks can conduct market analysis by utilizing the information technology space that can assist in making decisions. By analyzing bank marketing data, it can be used to select the type of marketing to do. Marketing campaigns can be carried out via email, telephone, and direct email to prospective customers that allow potential customers to decide whether to take the product offered or not. With increasing time, the amount of incoming data continues to grow. With this increasing data, one of the bank institutions found it difficult to predict whether their clients would subscribe to a term deposit or not. Therefore, in this paper, the data mining process will be carried out using classification (Decision Tree, Naïve Bayes, and Random Forest) and clustering (K-Means, K-Medoids, and DBSCAN) methods to predict if the client will subscribe a term deposit.
Proficiency Estimation Method in Vibrato: A Special Technique of an Electric Guitar

Many systems that provide automatic evaluation and feedback of electric guitar have been developed. However, they have a serious weakness, only “timing” and “pitch” are the focus of users performance in evaluation. In fact, a wide range of factors are involved in the evaluation. In order to solve this problem, previous studies used acoustic features for automatic evaluation of single-note playing. On the other hand, these are not possible to evaluate the sound using the special technique of guitar. In this study, we proposed a method for automatically estimating the proficiency of vibrato. As the method, we extracted the acoustic features focusing on the peak of Mel fundamental frequency and regressed the evaluation values using a support vector machine; SVM. As the result, we were able to perform regression with a coefficient of determination 0.68. This result indicates extracted features are highly relevant to evaluation values by person.
Analysis of diffraction from abruptly-terminated optical fibers by the method of lines

The diffraction of the two lowest order LP modes of an abruptly-terminated weakly guiding optical fiber is studied by the method of lines. The full formalism of the application of the method is given. The method is shown to be suited to studies of the scatter of guided modes at abrupt discontinuities. >
Quality and performance of tunable waveguide backshorts

A technique is presented for determining the quality of tunable short circuits used as backshorts in waveguide mixers. A backshort, suitable for use in a reduced height 345 GHz Schottky mixer block, has been fabricated in a novel manner and the VSWR determined, using our technique, to be > 90 at room temperature.
Special Issue: A decade of social media elections – a longitudinal and cross-national perspective Introduction: The Revolving Door of Australia’s Prime Ministership

This special issue of Social Media + Society develops a cross-national, longitudinal perspective on the use of social media in election campaigns. Australia, where leading social media platforms such as Facebook and Twitter were adopted early and widely by the general population, and where federal election cycles are unusually short (often less than 3 years), provides a particularly suitable environment for observing the evolution of social media campaigning approaches. This article extends our analysis of previous federal election campaigns in Australia by examining Twitter campaigning in the 2019 election; to allow for a direct comparison with previous campaigns, it builds on a methodological and analytical framework that we have used since the 2013 election.
Special Issue on A decade of social media elections – a longitudinal and cross-national perspective

In this case study on Denmark, we particularly focus on trajectories of participation, the question of increasing mobilization, and the perceived outcomes in terms of efficacy. Contrary to other studies, we seek to establish a coherent perspective including the “silent majority. ” By combining studies of participation, mobilization, and efficacy, we wish to provide not only a rigorous documentation of mobilization and efficacy of social media during election campaigns, but also a historic documentation of the participatory use and perception of social media as a democratic and political tool during three national election campaigns from 2011 to 2019.
Radiation effects in SOI technologies

Silicon-on-insulator (SOI) technologies have been developed for radiation-hardened applications for many years and are rapidly becoming a main-stream commercial technology. The authors review the total dose, single-event effects, and dose rate hardness of SOI devices. The total dose response of SOI devices is more complex than for bulk-silicon devices due to the buried oxide. Radiation-induced trapped charge in the buried oxide can increase the leakage current of partially depleted transistors and decrease the threshold voltage and increase the leakage current of fully depleted transistors. Process techniques that reduce the net amount of radiation-induced positive charge trapped in the buried oxide and device design techniques that mitigate the effects of trapped charge in the buried oxide have been developed to harden SOI devices to bulk-silicon device levels. The sensitive volume for charge collection in SOI technologies is much smaller than for bulk-silicon devices potentially making SOI devices much harder to single-event upset (SEU). However, bipolar amplification caused by floating body effects can significantly reduce the SEU hardness of SOI devices. Body ties are used to reduce floating body effects and improve SEU hardness. SOI ICs are completely immune to classic four-layer p-n-p-n single-event latchup; however, floating body effects make SOI ICs susceptible to single-event snapback (single transistor latch). The sensitive volume for dose rate effects is typically two orders of magnitude lower for SOI devices than for bulk-silicon devices. By using body ties to reduce bipolar amplification, much higher dose rate upset levels can be achieved for SOI devices than for bulk-silicon devices.
Load-Carrying Mechanism to Resist Progressive Collapse of RC Buildings

AbstractThe slew of high profile engineering calamities in the past decade has demonstrated the disastrous consequence of progressive collapse. However, the low probability of such events actually occurring means it is uneconomical to spend extreme resources to design every building against progressive collapse. A more feasible proposition would be to consider alternative fall-back parameters such as secondary load carrying mechanisms that can help to reduce the severity of the collapse, should it actually occur. However, to date, very limited studies have been carried out to quantify the effectiveness of such secondary load carrying mechanisms in resisting progressive collapse, especially membrane actions developed in RC slabs. Therefore, a series of 6 one-quarter scaled specimens were tested and the failure modes, load-displacement relationships, load redistribution responses, and strain gauge results are presented herein. The contribution of each mechanism on the load-carrying capacity is discussed. A .
Inverter output voltage synthesis using novel dead time compensation

In this paper, a novel dead time compensation method is presented which produces inverter output voltages equal to reference voltages. The experimental result is also presented to demonstrate the validity of the proposed method. It shows that the compensation of the distorted voltage is possible up to sub-microsecond range. The reference voltage can be used as a feedback value, which is essential for sensorless vector control and flux estimation. The method is based on space vector PWM strategy and it can be carried out automatically by an inverter controller for initial set-up without any extra hardware. <<ETX>>