Miracle-dz/UniFAR-FTUs huggingface dataset:
Enhancing robustness of handset antennas to finger loading effects

A novel handset antenna consisting of two small antennas is proposed to mitigate finger loading effects. Both antennas are excited with a different phase in order to maximise the bandwidth. A phantom hand has been used to perform the experiments. It demonstrates how the finger affects the radiation behaviour for three particular positions of the finger over the antenna area. Experimental results feature a wider input impedance bandwidth and a higher degree of immunity to finger loading effects when compared with a single-element approach.
An Examination of Sarikamiş Destination Competitiveness from the Luge Athletes’ Perspective: the relationship between tourism experience and perceived destination competitiveness

The purpose of this research is to examine the competitiveness of Sarıkamış destination from the perspectives of the licensed luge athletes participating in 2019 Interclub Natural Luge Turkey Championship competition. The research also intends to reveal the relationship between perceived destination competitiveness and tourism experience. Two research questions were addressed in this research. The first question was to examine to what extent the competitiveness of Sarikamis destination from the luge athletes’ perspective. The second question was to reveal the relationship between the tourism experience and perceived destination competitiveness. The Luge athletes have the opportunity to get experience in a wide range of ski centers at national or international area. Therefore, the perspectives of experienced athletes are important in determining the competitive advantage elements of Sarikamis destination. The data collection of this research is the questionnaire conducted with the luge athletes participating in the competition (n=191). The results indicated Sarikamis destination competitiveness from the luge athletes’ perspective that the highest three mean scores were “The destination’s overall favorable image in the world community, “The destination’s commitment to promoting a positive image” and this was following: “The destination’s commitment to providing a safe and secure environment. The research also revealed that the luge athletes’ perception of destination competitiveness and tourism experience in the destination do positively relate to each other. The research provided managerial implications to Sarıkamış destination managers and marketers based on the research findings. Effective image studies should be conducted in order to ensure that the Sarıkamış Cıbıltepe Ski Center can compete with other destinations internationally. In Sarıkamış Cıbıltepe Ski Center, high-quality health services should be provided against the possible injuries and accidents of the athletes. Key words: Destination Competitiveness, Tourism Experience, Sports Tourism, Luge Athletes, Sarıkamış.
An open randomized cross over study to compare the clinical effectiveness and safety of economical generic with branded generic telmisartan in essential hypertension

Background: Hypertension is a chronic disease and is a major risk factor for chronic heart disease, stroke, coronary heart disease, and its complications include heart failure, peripheral vascular disease, renal impairment, retinal hemorrhage, and visual impairment. Antihypertensive drugs are important to avoid such complications but compliance of patient is needed which may depend on the cost of therapy. Aim and Objective: This study aimed to assess the efficacy and safety of a branded generic with an economical generic. Materials and Methods: Out of 110 patients, 105 patients (53 patients in group A and 52 patients in group B) completed the study with follow-up over a period of 6 months. Group A patients received generic Telmisartan 40 mg in the beginning (0th day) which was continued for 12 weeks, cross-over was done with branded generic Telmisartan (Telma 40) which was given for further 3 months. Group B patients received the branded generic followed by generic Telmisartan in that sequence for 3 months each. Blood pressure (BP) was recorded at the baseline visit and at the end of 4, 8, 12, 16, 20, and 24 weeks. The adverse events were assessed throughout the study period. Results: Intra-group comparison show significant reduction in systolic (SBP) and diastolic BP (DBP) in each groups (P < 0.001) but when we compare the reduction of SBP and DBP in between the two groups the difference was not significant. Common adverse events were headache, dizziness, light-headedness, and vertigo. Conclusion: There was a huge difference between the prices of branded generic and unbranded generic. This study showed that both branded generic and unbranded generic are comparable in terms of efficacy, safety except the cost of therapy. Thus substitution of a Pharmacological generic (unbranded generic) drug could save lot of expenses.
Acoustic Characteristics of T‐AG0S19 Class SWATH Ships

Small Waterplane Twin Hull (SWATH) vessels exhibit superior seakeeping capabilities in rough water, which render them more capable than monohull ships for many missions. SWATH vessels are currently in use for a variety of acoustic missions, including oceanographic research and surveillance, which render it necessary to assess and minimize underwater noise generated by the ship. In addition, potential future missions such as anti-submarine warfare require the development of quiet SWATH ships. A wide range of acoustic and vibration data are needed to support the design and construction of SWATH ships with acoustic missions. A number of acoustic tests and trials have been conducted on USNS Victorious (T-AGOS 19) Class ships. During these tests, several innovative acoustic and vibration measurement and analysis techniques were used to identify, investigate and correct a number of acoustic deficiencies. This paper provides an overview of these trials and the acoustic-deficiency correction process. Personnel from a variety of organizations worked as a focused team to provide the technical and implementable solutions necessary to improve the acoustic characteristics of the T-AGOS 19 class. Additionally, the results of a diagnostic acoustic trial conducted on the Victorious are prepared and discussed in terms of the unique platform acoustic characteristics found on SWATH ships.
Influence of device engineering on the analog and RF performances of SOI MOSFETs

This work presents a systematic comparative study of the influence of various process options on the analog and RF properties of fully depleted (FD) silicon-on-insulator (SOI), partially depleted (PD) SOI, and bulk MOSFET's with gate lengths down to 0.08 /spl mu/m. We introduce the transconductance-over-drain current ratio and Early voltage as key figures of merits for the analog MOS performance and the gain and the transition and maximum frequencies for RF performances and link them to device engineering. Specifically, we investigate the effects of HALO implantation in FD, PD, and bulk devices, of film thickness in FD, of substrate doping in SOI, and of nonstandard channel engineering (i.e., asymmetric Graded-channel MOSFETs and gate-body contacted DTMOS).
A stochastic approach for the operation of a wind and pumped storage plant under a deregulated environment

ABSTRACT To improve the competiveness in the energy market, it is necessary that the wind power plants provide guaranteed power generation, although, it is not possible to forecast power availability from wind power plant accurately. This paper presents a stochastic model and solution technique for the combined operation of wind and pumped storage power plants to improve the power availability and increasing the profit considering uncertainties of wind power generation. In this model, uncertainties in wind data have been forecasted for grid connected day-ahead market using Weibull distribution model. The imbalances in the forecasted wind data and the market demand have been reduced by operating the pumped storage power plant. In this stochastic mixed integer problem, pumped storage plant can take the supply either from the grid or from the wind power plant for the pumping operation to store the energy in order to utilize this energy during peak hours for increasing the overall revenue. The reliability of the pumped storage is improved by replacing the conventional unit with the adjustable speed type pumped storage unit. In order to prove the optimality of the solution, two case studies were considered. In case study–I, scheduling is provided by operating the conventional pumped storage unit, whereas in case study–II, adjustable speed pumped storage unit has been used. It has been found that the adjustable speed pumped storage unit has further reduced the imbalance between generated power and demand. The complete approach has been formulated and implemented using AMPL software.
Assessing Group Projects in Design Education

The ability to work in teams is increasingly demanded by the ‘digital melting pot’ of current design practice. In design education group projects with group-based assessment are strategies often adopted to reap the benefits of economy of scale. However there is a fundamental problem with group-based assessment. Those who work hard are demotivated through lack of acknowledgement and ‘free riders’ receive the same grade. The design of an effective learning environment for group work clearly needs to employ methodologies which encourage students to adopt a deep approach to the learning activities. This article illustrates some vital educational concepts which clarify the dynamics of the learning environment and offer a framework for the design of group-based assessment. The author was part of a multidisciplinary team which designed an online Self and Peer Assessment Resource Kit (SPARK). The system solves the problems and yields the generic skill benefits arising from well-designed group projects.
Numerical Investigation of Laminar to Turbulent Boundary Layer Transition on a Naca 0012 Airfoil for Vertical-Axis Wind Turbine Applications

Laminar to turbulent transition in vertical-axis wind turbines has a dramatic effect on overall rotor performance, especially in fast rotating machines, where reliable prediction of the total drag coefficient for high values of tip speed ratio is one of the most critical topic in CFD simulations. This paper presents a 2D numerical investigation of the capability of the γ–θ transition model to predict the laminar to turbulent transition and consequent friction drag over a NACA 0012 airfoil for a Reynolds number of 360,000, which is typical of vertical-axis wind turbine blades during operation. The analized range of angles of attack varies from 0 deg to 10 deg. The commercial CFD solver ANSYS FLUENT® is used. In particular, the sensitivity to grid resolution is investigated for four different architectures: a completely unstructured mesh, a hybrid structured-triangular one and two distinct hybrid structured-triangular meshes where the wake region behind the airfoil is discretized using a fully structured grid. The effect of freestream turbulence intensity on the transition onset is also analyzed. Finally, CFD results are compared to experimental data, although affected by some uncertainty, and to the predictions of an interactive program for the design and analysis of subsonic isolated airfoils (XFOIL), showing a very good agreement provided that the value of freestream turbulence intensity is known.
The Application of Improved Cyclical Spectrum Density Method in Fault Diagnosis of Rolling Bearing

The characteristic of cyclical impact is reflected on the signal of rolling bearing in fault condition. The carrier frequency is modulated by times of the failure frequencies. When the traditional cyclical spectrum density (CSD) method is used to analyze the signal, all the modulation frequencies will be demodulated in the cyclic frequency spectrum. In this case, it is difficult to recognize the fault type of the bearing. Therefore, a new cyclical spectrum density method based on the kurtosis energy (CSDK) is proposed. The kurtosis of every cyclic frequency’s slice is used as the weight coefficient of the cyclic frequency’s energy accumulation to extract fault feature effectively. The proposed method has greatly reduced times of the harmonic frequencies’ effect in traditional CSD method. The analysis of the signal gathered from the outer rolling bearing of blast furnace belt cylinder shows that the fault feature extracted by the new method is more clear and accurate than CSD method.
Aperture slot size effect to wide band open air gap radial‐line slot array performance

A wideband open air gap radial line slot array (RLSA) antenna is presented for point‐to‐point application. This article investigates the optimum slot arrangement and the effect of slot width to the RLSA antenna. Eight models were developed and simulated with slot width taking range in values from 1 to 8 mm. Results from simulation shows optimum performance at 6‐mm slot width. The 2‐mm slot width gave similar performance to the 6‐mm slot width in term of gain and directivity. Both antennas were fabricated and measured, from the measurement; a better return loss performance of about 28% was realized at 6‐mm slot width when compared to 2‐mm slot width RLSA. However, both antennas produced the same gain. A better sidelobe level of 2.9 dB was achieved with the 2‐mm slot width antenna. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2974–2978, 2014
Az ESG-információk hozzájárulása az európai bankok pénzügyi stabilitásához

Napjainkban egyre több gazdasági szereplő tesz közzé információkat a fenntarthatósághoz való hozzájárulásáról, környezeti (E), társadalmi (S) és vállalatirányítási (G) teljesítményéről. A bankok viszonyulása ezekhez a tényezőkhöz azért fontos, mert a befektetési és hitelezési stratégiájukon keresztül hatnak a többi iparágra is. Jelen kutatásunk során – panel regressziós eljárásokkal – azt vizsgáljuk, hogy milyen a kapcsolat a pénzügyi stabilitás és az ESG-teljesítmény között. Az Európai Unió (EU) és az Európai Szabadkereskedelmi Társulás (EFTA) országaiban tőzsdén jegyzett hitelintézetek (243 bank) vizsgálata nyomán megállapíthattuk, hogy az ESG-teljesítmény szignifikánsan csökkentette a nem fizető hitelek mértékét. Továbbá a szavatolótőke kedvező hatását is alátámasztotta modellünk. A vizsgálat alapján kijelenthetjük, hogy a környezeti, társadalmi vállalatirányítási teljesítmények pénzügyi stabilitásra gyakorolt hatásai pozitívak, tehát ezen szempontok figyelembevétele fontos a befektetőknek, a bankoknak és a szabályozóknak is.
High-power and high-efficiency electrostatic actuator

The authors have previously developed two types of concatenated electrostatic actuators which are driven by pulse excitation profiles. One of these actuators had excellent performance, but the efficiency of the driving circuit for the actuator was insufficient for practical applications. To improve the efficiency, an electrostatic actuator that can be driven by an AC excitation profile was developed. This linear surface-drive actuator weighs 7 g and consists of a thin slider and a stator. Each element has three-phase electrodes with the same pitch, and a three-phase AC driver connected to the electrodes operates the actuator. The efficiency is enhanced by a factor of approximately four. In addition, force and power generation performance is also improved; it produces 1.6 W of power and a 4.4-N propulsive force. The power/weight ratio is improved by a factor of about three, reaching 230 W/kg. <<ETX>>
CATEGORIZATION OF WEAR WORK IN A BUSINESS UNIT

The inherent complexity of the business units, the categorization of burnout in the literature also referred to as burnout syndrome, to identify opportunities for improvement in organizational strategies to safeguard the welfare of human capital without affecting productivity at this research aims to identify the dimensions of the wear seen by the labor force. The depth of this study was classified as explanatory design field and taken as unit of analysis for a marketing company, where interviews were structured and applied the Maslach Burnout Inventory (MBI) subscales obtained in reliability with Cronbach's alpha between 0.5 and 0.7, and statistical validation. We applied factor analysis and principal component extraction burnout categorized as: 1) Affinity Industrial Relations, 2) Concept of Industrial Relations, 3) Management of Industrial Relations, 4) Professional Conduct, 5) Welfare Transfer personal and emotional, giving evidence that the original dimensions of MBI suffer amendment to change the application context, and identifying labor relations and staff welfare as main factors in the perception of wear.
Compact broadband U‐slot‐loaded rectangular microstrip antennas

A compact variation of a U‐slot‐loaded rectangular microstrip antenna—a half U‐slot (L‐shaped slot) loaded rectangular microstrip antenna—is proposed. The bandwidth of a shorted compact square microstrip antenna is increased by cutting a quarter‐wavelength step U‐slot. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 556–559, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21049
Performance Improvement on RED Based Gateway in TCP Communication Network

: (cid:1659)(cid:1659) Internet Engineering Task Force (IETF) has been considering the deployment of the Random Early Detection (RED) in order to avoid the increasing of packet loss rates which caused by an exponential increase in network traffic and buffer overflow. Although RED mechanism can prevent buffer overflow and hence reduce an average values of packet loss rates
UTILIZAÇÃO DE BANCADAS DE ENSAIO PARA ESTUDO DO COMPORTAMENTO DINÂMICO DE MÁQUINAS ROTATIVAS - VIBRAÇÕES MECÂNICAS -

As maquinas rotativas sao equipamentos utilizados nos diversos ambientes do cotidiano, tornando-se elementos indispensaveis nas atividades humanas. Devido ao alto nivel de exigencia em tais especialidades, conhecer o comportamento dinâmico dessas maquinas e fundamental. Como estudo de caso neste trabalho foi feito a analise experimental para um conjunto suportado por 2 mancais de deslizamento, localizado na Refinaria Landulpho Alves (RLAM) – PETROBRAS, e em seguida, foi analisado a resposta para o fenomeno de desbalanceamento, desalinhamento e rocamento. Como resultado tem-se a obtencao de conhecimento relativo aos principais fenomenos que afetam os equipamentos rotativos, atraves da aquisicao de dados e analise da resposta do sistema simulando condicoes especificas de operacao de equipamentos industriais, podendo-se assim, investigar, entre outros, fenomenos tais como desalinhamentos e desbalanceamentos em maquinas.
Design Optimisation of Passenger Car Hood Panels for Improved Pedestrian Protection

This article presents research motivated by the prospect of imminent implementation of the new regulatory requirement for pedestrian protection GTR9 (Global Technical Regulation9). A new methodology has been developed for optimisation of the hood panel of passenger cars to ensure that the pedestrian Head Injury Criterion (HIC) falls below the threshold values specified by both the GTR9 and the consumer metric, the Australian New Car Assessment Program (ANCAP). To meet the performance criteria for pedestrian protection head impact, it is vital to incorporate the associated design parameters into the hood design process at an early stage. These parameters are architectural in nature whereby changing them later in the vehicle design process would be very expensive and difficult to implement. The developed methodology for the design of a hood configuration aims to provide a robust and homogeneous HIC for different impact positions in the central area of the hood of a large sedan, taking into consideration the limited space available for deformation. The non-linear Finite Element Analysis (FEA) software LS-DYNA was used in this research to simulate the GTR-9/ANCAP pedestrian head impact testing procedures. The efficiency of a hood design was calculated as the ratio of the theoretical optimal deformation of hood assembly for a given value of HIC to the actual deformation calculated for the same HIC value of the corresponding numerical test. The efficiency and HIC value were derived for each configuration and compared to obtain the optimal solution for homogeneous performance and minimal deformation of outer and inner hood panels. The Kriging response surface and the Monte Carlo method were used in the design of numerical experiments. The outcomes of this study provide a clear indication that an optimum configuration of the hood panel of a passenger car can be developed to minimize the hood deformation while meeting the requirement for HIC value.
Sensitivity of the Numerical Prediction of Flow in the LIMOUSINE Combustor on the Chosen Mesh and Turbulent Combustion Model

The objective of this study is to investigate the sensitivity and accuracy of the combustible flow field prediction for the LIMOUSINE combustor with regards to choices in computational mesh and turbulent combustion model. The LIMOUSINE combustor is a partially premixed bluff body stabilized natural gas combustor designed to operate at 40–80 kW and atmospheric pressure and used to study combustion instabilities. The transient simulation of a turbulent combusting flow with the purpose to study thermo-acoustic instabilities is a very time consuming process. For that reason the meshing approach leading to accurate numerical prediction, known sensitivity, and reduced amount of mesh elements is important. Since the numerical dissipation (and dispersion) is highly dependent on, and affected by, the geometrical mesh quality, it is of high importance to control the mesh distribution and element size across the numerical model. Typically, the structural mesh topology allows using much less grid elements compared to the unstructured grid, however an unstructured mesh is favorable for flows in complex geometries. To explore computational stability and accuracy, the numerical dissipation of the cold flow with mixing of fuel and air is studied first in the absence of the combustion process. Thereafter the studies are extended to combustible flows using standard available ANSYS-CFX combustion models. To validate the predicted variable fields of the combustor’s transient reactive flows, the numerical results for dynamic pressure and temperature variations, resolved under structured and unstructured mesh conditions, are compared with experimental data. The obtained results show minor dependence on the used mesh in the velocity and pressure profiles of the investigated grids under non-reacting conditions. More significant differences are observed in the mixing behavior of air and fuel flows. Here the numerical dissipation of the (unstructured) tetrahedral mesh topology is higher than in the case of the (structured) hexahedral mesh. For that reason, the combusting flow resolved with the use of the hexahedral mesh presents better agreement with experimental data and demands less computational effort. Finally in the paper the performance of the combustion model for reacting flow as a function of mesh configuration is presented, and the main issues of the applied combustion modeling are reviewed.Copyright © 2013 by ASME