Miracle-dz/UniFAR-FTUs huggingface dataset:
Performance study on high power linear induction motor in transportation

This paper, on the base of the two-dimensional magnetic equations of linear induction motor (LIM), achieves the phase current and excited voltage expressions by dummy electric potential method. Then it deduces the air-gap flux linkage expression by connecting Maxwell electromagnetic field equations, complex power method with conformal transformation method fully considering half-filled slots, york magnetic saturation, back iron resistance. This article, by the equal complex power relationship between magnetic and circuit, obtains some expressions involving excited reactance xm0, secondary resistance r2', secondary leakage reactance x2, longitudinal end effect coefficients Kr(s) and Kx(s), transverse end edge effect coefficients Cr(s) and Cx(s), skin effect coefficient Kf. Depending on the T-model of rotary induction motor (RIM), this paper presents a new revised T-model equivalent circuit for LIM by superposition theorem. This new model makes calculation for Japanese 12000-LIM in detail. Many curves attained by new model including thrust force, phase current, power factor and efficiency are compared with those of space harmonic method and experience. The contrastive curves and error analysis indicate that this model is credible and accords with engineering application requirement. Therefore, it is so useful that establishes foundation for design and optimization of high-power LIM in transportation.
Influence of the soil–structure interaction on the fundamental period of buildings

This paper includes an investigation of the influence of the soil–structure interaction (SSI) on the fundamental period of buildings. The behaviour of both the soil and the structure is assumed to be elastic. The soil‐foundation system is modelled using translational and rotational discrete springs. Analysis is first conducted for one‐storey buildings. It shows that the influence of the SSI on the fundamental frequency of building depends on the soil–structure relative rigidity Kss. Analysis is then extended for multi‐storey buildings. It allows the generalization of the soil–structure relative rigidity Ks to such complex structures. Charts are proposed for taking into account the influence of the SSI in the calculation of the fundamental frequency of a wide range of buildings. Copyright © 2007 John Wiley & Sons, Ltd.
Engineering the community of practice for maintenance of organizational knowledge

Organizational knowledge is normally viewed as something that can be captured, transmitted, processed, stored and retrieved. In this paper we argue for a transactional view in which knowledge is collective, distributed and dynamic. By that view, organizational knowledge is created and maintained primarily through seamless collaborative and social processes. This implies that storage of and access to knowledge is less of a concern than is the reciprocity inherent in shared practice. We argue that the most effective goal for cognitive analysis and design is to promote development of a work-place community of practice in which knowledge is created, shared and maintained via natural processes of communication, negotiation and collaboration. We use descriptions from ethnographic, studies to identify a number of important processes and argue for workplace reengineering strategies that strengthen natural interactions within the workplace.
Comparative Study of Application of the EFQM Excellence Model in Central Libraries of Governmental & Medical Sciences Universities of Tabriz (Iran)

Purpose: This paper aims to provide knowledge about the Application of the EFQM Excellence Model in Central Libraries of Governmental & Medical Sciences Universities of Tabriz (Iran). ð Design/methodology/approach: The present study is analysis of the survey. The research society includes 22 managers and officials working in Central Library in Tabriz University and Medical university of Tabriz. These people were selected by the census. The Tools for data collection was an explanatory interview and questionnaires. The questionnaire was approved by the European Foundation Quality Standards in Europe (EFQM) which consist of a set of methods and tools to evaluate the excellence of organization. Strengths and weaknesses of 9 fields of managements at Central Library of Tabriz Governmental and Medical Universities identified and eventually weaknesses of these fields were analyzed for improving. Scores calculated using the European Quality Model Special Voting. In order to analyze research findings, descriptive statistics (frequency and percentage) and statistical inference (t-test) used and for this purpose the software applications such as SPSS and EXCELL applied. ð Findings: Findings of research reveal that the rate of management quality at central library of medical university of Tabriz is scoring 446/07 points out of a total of 1000, is on a fairly middle level of quality of management that 240/36 and 205/71 of this score belong to empower and result fields respectively. The highest points belong to shares and resources and lowest points belong to human resources results. Rate of management quality at central library of Tabriz is 546/45 points out of a total of 1000 which is also on a fairly middle level of quality of management that 285/03 and 260/41 of it belong to empower and result fields respectively. Most points belong to shares and resources and lowest points belong to planning and strategy. Between Libraries studied, except the criteria and component, processes”, in none of the fields related to other criteria, no significant difference is observed. However, strengths and weaknesses are identified in detail. ð Conclusion: By using the excellence model of EFQM in libraries of Tabriz Governmental and Medical Sciences Universities, the results of the study reveal that: first, the model (with some modifications) is applicable in library environment; second, it identifies the strengths
Regenerative properties of a pump-modulated four-wave mixing scheme in dispersion-shifted fibers

A new scheme for all-optical signal reshaping is proposed. It is shown that proper adjustment of the operating conditions of a wavelength converter based on four-wave mixing (FWM) in dispersion-shifted fiber (DSF) results in significant extinction ratio enhancement and noise suppression of the converted signal. The key issue in the proposed idea is the application of the modulation bitstream on the input pump wave. Detailed numerical simulation shows that it is possible to achieve a wavelength-converted output with extinction ratio of 20 dB when the extinction ratio of the input signal is 10.5 dB, while at the same time, the improvement in the Q-factor is almost 6 (from 6.5 at the input, it becomes more than 12 at the output). The theoretical predictions have been experimentally confirmed by measuring the transfer function of the FWM in a 17-km-long DSF under different operating conditions. The obtained results are in a very good agreement with those predicted theoretically.
Design of high-gain SIW and HMSIW H-plane horn antenna using metamaterial

In this paper, a substrate-integrated waveguide (SIW) H-plane horn antenna has been designed for X-band applications. Metamaterial is incorporated for performance enhancement of the designed antenna. Capacitively loaded loop is used as the unit cell of metamaterial for achieving negative values of relative permittivity and relative permeability. A half-mode SIW H-plane horn antenna is also proposed in this paper which reduces the size of the antenna without much effect on its performance. Metamaterial is integrated on the half-mode horn as well for improvement in gain and radiation pattern. The antennas are fabricated and tested. Excellent agreement between the measured and simulated results was obtained.
A passive compliant wrist for chamferless peg-in-hole assembly operation from vertical and horizontal directions

Abstract This paper presents a chamferless vertical/horizontal remote centre compliance (CVHRCC) mechanism developed for robotic peg-in-hole assembly operations. The wrist adopts the passive accommodation approach and differs from other devices in its category in its ability to accommodate positional errors between the mating parts without a chamfer on either part. In addition, the wrist is designed to work from both the vertical and the horizontal directions. A series of experiments have been carried out for testing the new wrist. The main conclusion of the assembly experiments is that the CVHRCC can work effectively from the vertical direction in accommodating positional errors between chamferless mating parts with large clearance (over 0.2 mm) between the peg and hole.
GEOPHYSICAL SURVEY AS AN AID TO EXCAVATION AT MITROU: A Preliminary Report

Abstract:ABSTRACTVarious geophysical methods were used to explore the subsurface of the prehistoric site of Mitrou. Geophysical research was essential for selecting significant areas for excavation as well as for guiding archaeological fieldwork and complementing its results. Resistivity mapping and differential magnetometry detected patterns of well-structured anomalies, suggesting that a regularly laid-out urban complex covered most of the site; electrical resistivity tomographies yielded three-dimensional views of buried structures and indicated promising areas for further exploration. Subsequent excavation uncovered the targeted parts of this complex. The results of this combined research provide new information about crucial periods of change in Greek prehistory.
Study of Internal Flows in a Mixed-Flow Pump Impeller at Various Tip Clearances Using 3D Viscous Flow Computations

The complex three-dimensional flow fields in a mixed-flow pump impeller are investigated by applying the incompressible version of the Dawes’ 3D Navier-Stokes code. The applicability of the code is confirmed by comparison of computations with a variety of experimentally measured jet-wake flow patterns and overall performances at four different tip clearances including the shrouded case. Based on the computations, the interaction mechanism of secondary flows and the formation of jet-wake flow are discussed. In the case of large tip clearances, the reverse flow caused by tip leakage flow is considered to be the reason for the thickening of the casing boundary layer followed by the deterioration of the whole flow field.Copyright © 1990 by ASME
Application of wavelet transform and neural networks to fault location of a teed-circuit

A new technique using wavelet transform and neural network for fault location in a teed-circuit is proposed in this paper. Fault simulation is carried out in EMTP96 using a frequency dependent transmission line model. Voltage and current signals are obtained for a single phase (phase-A) to ground fault at every 500 m distance on one of the branches, which is 64.09 km long. Simulation is carried out for 3 cycles (60 ms) with step size at, of 2.J μs to abstract the high frequency component of the signal and every 100 points have been selected as output. Two cycles of waveform, covering pre-fault and post-fault information are abstracted for further analysis. These waveforms are then used in wavelet analysis to generate the training pattern. Two different mother wavelets have been used to decompose the signal, from which the statistical information is abstracted as the training pattern. RBF network was trained and cross-validated with unseen data. (5 pages)
The Effectiveness of Functional Analytical Therapy on Controlling, Expressing and Internalizing Anger in Patients with a Borderline Personality Disorder

Introduction : Borderline personality disorder affects many cognitive, behavioral, and even emotional domains of individuals. This study aimed to evaluate the effectiveness of functional analytical therapy on controlling, expressing, and internalizing anger in patients with a borderline personality disorder. Methods : The research method was a quasi-experimental pre-test-post-test with experimental and control groups. The statistical population of this study included all 43 women referred to Asal Psychological Clinic in Karaj city in 2020. Out of 33 patients with moderate borderline personality disorder, 24 were selected by simple random sampling method and were randomly assigned to two groups of 12 (experimental and control groups). The functional analytical psychotherapy package of Tsai, Kohlenberg, Kanter & Waltz (2010) was performed on the experimental group in 10 sessions of 45 minutes. For experimental and control groups in pre-test and post-test Anger Questionnaire of Spielberg (1988) was used. Data were analyzed using analysis of covariance mixed with SPSS18 software. Results: The results showed that functional analytical therapy has a significant effect on improving controlling, expressing, and internalizing anger in patients with borderline personality disorder (Pvalue≤0.001). Conclusions: These results emphasize the level of performance of functional analytical psychotherapy in different areas of cognitive, behavioral, and emotional in the treatment of people with a borderline personality disorder. Keywords: Functional therapy, Anger, Borderline personality disorder.
Thermal Model and Experimental Validation of Humidifier Systems as Commissioning Tools in HVAC Systems

This paper presents the results of an experimental study performed to obtain a simplified model applicable to two adiabatic humidification systems: wetted wires and centrifugal atomizing. The aims of this study are to provide a model to be used in situ as a diagnosis tool in the commissioning of air-conditioning systems, and to develop a comparison between “wet” and “therma” effectiveness methodologies that also can be useful for the commissioning process. The model is able to predict the exhaust dry-air temperature, exhaust humidity ratio, and the humidifier effectiveness by using as inputs the supply-air temperature and relative humidity as well as the air and water mass flow rates. Simplicity and accuracy are the crucial factors. A series of tests are performed in order to validate the model.
Factors Affecting Clinical High Risk for Psychosis

Background: For early detection of schizophrenia, we investigated the factors influencing young adults at clinical high risk (CHR) of psychosis and explained the structural model based on the Adolescent Resilience Model and the Stress Vulnerability Model. Methods: Based on web-based questionnaires, we measured perceived stress, family adaptability and cohesion, social support, coping, resilience, social function, and CHR in 907 cases. Results: Among 907 subjects, 102 (11.3%) were classified as CHR, and there was no difference according to demographic variables. Influencing factors of CHR were perceived stress, resilience, and social function. In the modified model, perceived stress, family adaptability and cohesion, and social support demonstrated a significant effect on coping. Perceived stress, family adaptability, cohesion, and coping demonstrated a significant influence on resilience. Perceived stress, coping, resilience, and social function demonstrated a significant influence on CHR. Conclusions: We suggest future research on the early stages of adolescence, and research that includes face-to-face surveys. Moreover, we recommend the development and selection of tools that can explain each influencing factor more lucidly.
39.2: Fast layer‐based algorithm in computer‐generated holography by using the frequency sparsity of hologram

Fast layer‐based is proposed to speed up the calculation of computer‐generated holograms. In a layer‐based method, each layer image may contain large areas in which the pixel values are zero considering the occlusion effect among the different depth layers. By taking advantage of this feature, the fast algorithm only calculates the non‐zero image areas of each layer. In addition, two one‐dimensional fast Fourier transforms (1DFFT) are implemented to compute a 2DFFT without calculating the rows or columns in which the image pixels are all zero. Since the size of the active calculation is reduced, the computational speed is considerably improved. Numerical simulations and optical experiments are performed to confirm these methods. The results show that the total computational time can be reduced by 5 times for a three‐dimensional (3D) object of a train with 50 depth layers.
A Systemic Functional Analysis of Theme in Modern Standard Arabic Texts

The concept of Theme is regarded as a functional linguistic element that exists in many languages. The main aim of this study is to explore the functions of Theme in Arabic, applying the Systemic Functional Linguistics framework adopted by Downing (1991). Methodologically, several related real examples have been selected from the written discourse of Modern Standard Arabic and then analyzed contextually. The empirical analysis has revealed that (i) Theme can provide different functions, such as Individual, Circumstantial and Subjective and Logical Frameworks for the interpretation of the Rheme, and (ii) Theme can interact dynamically with different grammatical functions (e.g. Subject, Object, etc.) and have different pragmatic functions (e.g. Topic, Given and New information). Therefore, the view that makes a necessary link between Theme on the one hand and Noun Phrase, Topic or Given information on the other hand is proven incorrect and empirically invalid. Similar results have been obtained in the context of English (Downing 1991) but not yet for Arabic? This strengthens not only the universality of the concept of Theme but also its functions.
What contents from the history of chemistry are estimated as useful for chemistry lessons – attitudes of chemistry teachers

ABSTRACT Background In the previous decades many research papers and educational documents have emphasized the importance of the application of history of science in the science education of students. Consequently, chemistry teachers are expected to be familiar with the historical development of science and capable of incorporating historical contents in teaching practice in order to support the development of students’ conceptual understanding and the understanding of the nature of science. Purpose The aim of this study was to investigate chemistry teachers’ attitudes towards the impact of history of chemistry in promoting students’ understanding of chemistry and the inclusion of topics from history of chemistry in regular teaching practice. Sample The sample comprised 272 chemistry teachers working in primary schools (for students aged 7 to 14), who teach chemistry in the seventh and eighth grade (students aged 13 to 14). Design and methods A questionnaire which consisted of three parts and contained 11 questions altogether was used for data collection. Results The most common topics from history of chemistry in the respondents’ classes were how some discoveries had been made, most often the structure of atoms and the periodic table of elements. Two-thirds of the teachers estimated such contents as useful and interesting, but over half of the respondents assessed the contribution of the historical context to the understanding of chemical concepts as moderate. Conclusion Based on the teachers’ answers it can be concluded that they recognize some potential benefits of the implementation of history of chemistry in teaching chemistry, but their answers also indicate that they need some additional support in the application of historical topics in their regular teaching practice.
A new zenith hydrostatic delay model for real-time retrievals of GNSS-PWV

Abstract. The quality of the zenith hydrostatic delay (ZHD) could significantly affect the accuracy of the zenith wet delay (ZWD) of the Global Navigation Satellite System (GNSS) signal, and from the ZWD precipitable water vapor (PWV) can be obtained. The ZHD is usually obtained from a standard model – a function of surface pressure at the GNSS station. When PWV is retrieved from the GNSS stations that are not equipped with dedicated meteorological sensors for surface pressure measurements, blind models, e.g., the global pressure and temperature (GPT) models, are commonly used to determine the pressures for these GNSS stations. Due to the limited accuracies of the GPT models, the ZHD obtained from the model-derived pressure value is also of low accuracy, especially in mid- and high-latitude regions. To address this issue, a new ZHD model, named GZHD, was investigated for real-time retrieval of GNSS-PWV in this study. The ratio of the ZHD to the zenith total delay (ZTD) was first calculated using sounding data from 505 globally distributed radiosonde stations selected from the stations that had over 5000 samples. It was found that the temporal variation in the ratio was dominated by the annual and semiannual components, and the amplitude of the annual variation was dependent upon the geographical location of the station. Based on the relationship between the ZHD and ZTD, the new model, GZHD, was developed using the back propagation artificial neural network (BP-ANN) method which took the ZTD as an input variable. The 20-year (2000–2019) radiosonde data at 558 global stations and the 9-year (2006–2014) COSMIC-1 (Constellation Observing System for Meteorology, Ionosphere, and Climate) data, which were also globally distributed, were used as the training samples of the new model. The GZHD model was evaluated using two sets of references: the integrated ZHD obtained from sounding data and ERA5 reanalysis data. The performance of the new model was also compared with GPT3, the latest version. Results showed the new model outperformed GPT3, especially in mid- and high-latitude regions. When radiosonde-derived ZHD was used as the reference, the accuracy, which was measured by the root mean square error (RMSE) of the samples, of the GZHD-derived ZHD was about 21 % better than the GTP3-derived ones. When ERA5-derived ZHD was used as the reference, the accuracy of the GZHD-derived ZHD was about 30 % better than GPT3-derived ZHD. In addition, the real-time PWV derived from 41 GNSS stations resulting from GZHD-derived ZHD was also evaluated, and the result indicated that the accuracy of the PWV was improved by 21 %.
Genetic diversity and relationship of Korean chicken breeds using 12 microsatellite markers

A number of Korean Chicken breeds were registered in Domestic Animal Diversity Information System (DAD-IS, http://dad.fao.org/) of the Food and Agriculture Organization (FAO). Evaluation of genetic diversity and relationship of local breeds is an important factor towards the identification of unique and valuable genetic resources. Therefore, this study aimed to analysis the genetic diversity and relationship of 22 Korean Chicken breeds using 12 microsatellite (MS) markers. The mean number of alleles for each variety was 5.52, ranging from a 3.75 (Leghorn F; NF) to a 7.0 (Ross). The most diverse breed was the Hanhyup3 (HCC), which had the highest expected heterozygosity (H Exp ) (0.754) and polymorphic information content (PIC) (0.711). The NF was the least diverse population, having the lowest H Exp (0.467) and PIC (0.413). As a result of the principal coordinates analysis (PCoA) and factorial correspondence analysis (FCA) confirmed that Hy-line Brown (HL) and Lohmann Brown (LO) are very close to each other and that Leghorn and Rhode Island Red (RIR) are clearly distinguished from other groups. Thus, the reliability and power of identification using 12 types of MS markers were improved, and the genetic diversity and probability of individual discrimination were confirmed through statistical analysis. This study is expected to be used as basic data for the identification of Korean chicken breeds, and our results indicated that these multiplex PCR marker sets will have considerable applications in population genetic structure analysis.