Miracle-dz/UniFAR-FTUs huggingface dataset:
A Comparative Overview of ICT Tools between the Pre-Service Teachers

Information and Communication Technology or widely known as ICT is not something new nowadays. In fact, computers and ICT are things we cannot do without today and in the future. Due to that, this study is conducted with t he aim to investigate the pre-service teachers' usage of ICT, competency level, their perceptions o n ICT as well as their attitudes towards ICT. This study involves 80 pre-service teachers from tw o courses, Teaching English as Second Language (TESL) and Sports & Recreation, in one of the public universities in Malaysia. Questionnaires comprising of 5 sections were distri buted and analysed using SPSS. The findings revealed that there is no significant difference in terms of the ICT usage between the two courses. However, in terms of the ICT competency, p erceptions of ICT as well as attitudes towards ICT, TESL students were found to be on the upper hand as compared to the counterpart, Sports and Recreation students. The study revealed that there is a significant and positive relationship between ICT usage, competency level, p erceptions and attitudes towards using ICT in the interactive learning process. Therefore, mor e emphasis on the importance of ICT utilization should be encouraged among the pre-serv ice teachers to enhance the teaching and learning process.
Workplace bullying as an organisational issue: Aligning climate and leadership

ABSTRACT Although workplace bullying has been long recognised as an organisational level phenomenon, few studies have explored how different organisational factors come together to influence bullying risk. In this study, we integrate theories on organisational psychosocial safety climate (PSC) and social information processing to understand how PSC is related to bullying exposure, mediated through leadership. We conceptualise and find support for how both organisational and supervisory factors align to shape the likelihood of bullying. Both constructive and laissez-faire leadership are incorporated into the model to explore the positive and negative pathways from PSC to bullying in a high-risk sample: 1,231 employees from 47 New Zealand public sector agencies who face high levels of emotional labour demands in their work. Findings from multilevel modelling corroborate the direct negative effect of PSC on bullying and confirm the predicted mediated pathways through both types of leadership to bullying, which is negatively associated with job satisfaction. Our findings shed light on how organisational factors at different levels combine to influence bullying, highlighting the potential (and need) for a multi-faceted approach to the prevention of bullying and mitigation of its negative effects.
Gate-all-around OTA's for rad-hard and high-temperature analog applications

Performance of operational transconductance amplifiers (OTA's) fabricated in the gate-all-around SOI technology is described at elevated temperature and after total dose irradiation. Design guidelines using two analog parameters (early voltage and transconductance to drain current ratio) are proposed for correct operation in these two different harsh environments. The design methodology using the two analog parameters of interest is proposed and applied to the specific case of the GAA technology. The temperature and dose dependence of the two above design parameters are then presented. Two different OTA architectures are considered: a single-stage amplifier and a folded cascode amplifier. Experimental results obtained separately for each environment are discussed. High-temperature measurements were performed up to 300/spl deg/C, while total dose measurements were obtained for doses up to 15 Mrad(Si) total dose of gamma rays from a /sup 60/Co source.
Breeding Value Estimation for Iranian Holsteins through Using Random Regression and Test Day Records Model

Test day (TD) milk yields of Iranian Holstein cows were analyzed with a et of random regression models. Data included 203,498 TD records of first l actation from 22,986 cows calving in 286 herds between 2002 and 2009. (Co) variance componen ts were estimated using six random regression models. Random regression models were st udied in respect of different orders of fitting for fixed and random regression. Also, diff erent methods of residual variance in the statistical model assum that included assumption of constant and variable residual variance during lactation. Residual variance as the order of legendre polynomials (LP) increased when it was assumed constant, and it was highest at the beg inning of lactation. The range for the estimates of heritability (0.074 - 0.23) was simila r for all models and higher in mid lactations. High genetic correlations were obtained between ran dom regression coefficients. In the additive selected model specifically LP(3,4), the maximum am ount of estimated additive genetic variance was related to day 223 of lactation. Additive genet ic value of each animal for each lactation day was estimated and then additive genetic value or ge netic merit curves were drawn for each animal. Breeding values of each animal for the whol e lactation period is computed by sum of the estimated breeding values for every single lactatio n day. Keyword: Dairy cattle, random regression, breeding value.
EFFECT OF DIFFERENT SCARIFICATION TECHNIQUES ON THE GERMINATION OF SOME ENDEMIC MEDICAGO SPECIES IN ALGERIA

This work aims at dormancy in medics. At the same time, the storage effect of eleven years. The best results are obtained by mechanical scarification (with glass paper). The percentage of germination reaches up to 100%. However, the average passage in the liquid nitrogen also gives high results, the average germination of passage of the seed in sulfuric acid at 98% for 60 minutes is 65.63% approaches the control. With the mechanical method we noticed that the dormancy differs between species with big seed and small seed. Within the small seeds M polymorpha have a very high germination rate compared to M truncatula. On the other hand, in large seeds it is homogeneous and the germination rate is very close between M. ciiliaris and M. intertexta. Regarding storage, there is no significant difference in germination between populations harvested in 2004 and those harvested in 2012 and treated in 2015, ie 11 years of storage, for all scarification processes. Moist heat treatment was the exception, accounting for 40% of germination variations (p <0,05) and mechanical scarification seems very efficient, easy to apply in the field, and the scope of the farmer but the breaking of seeds is inevitable, so it can be replaced by liquid nitrogen treatment which does not cause breakage or the removal of the seed coat in a short time.
Cyber dating abuse and ghosting behaviours: personality and gender roles in romantic relationships

BACKGROUND Cyber dating abuse (CDA) refers to physical, verbal, and psychological violence perpetrated towards a romantic partner via technology and social media. Another emerging form of online abuse is ghosting, a silent strategy to dissolve undesired relationships without openly having to break them up. The aims of the current study were (i) to explore the relationship between CDA and ghosting behaviours in romantic relationships and (ii) to investigate the roles of gender and personality traits (conscientiousness, agreeableness, extraversion, emotional stability, openness) in prediction of CDA (perpetration and victimization). PARTICIPANTS AND PROCEDURE A sample of 409 participants (64.8% females), aged between 18 and 53 years (Mage = 26.40, SD = 6.06), took part in the study. RESULTS CDA and ghosting behaviours are interrelated, and women were more prone than men were to use ghosting strategies, such as stopping messages abruptly and punishing the partner through silence. Moreover, gender and personality traits differently predicted direct aggression and control/monitoring perpetration and direct aggression victimization, but they were not significant predictors of control/ monitoring victimization. CONCLUSIONS The findings are discussed in light of gender differences to improve our understanding of the psychological factors involved in cyber dating violence.
Damping controller design for power system oscillations using global signals

This paper describes a new power system stabilizer (PSS) design for damping power system oscillations focusing on interarea modes. The input to the PSS consists of two signals. The first signal is mainly to damp the local mode in the area where PSS is located using the generator rotor speed as an input signal. The second is an additional global signal for damping interarea modes. Two global signals are suggested; the tie-line active power and speed difference signals. The choice of PSS location, input signals and tuning is based on modal analysis and frequency response information. These two signals can also be used to enhance damping of interarea modes using SVC located in the middle of the transmission circuit connecting the two oscillating groups. The effectiveness and robustness of the new design are tested on a 19-generator system having characteristics and structure similar to the Western North American grid.
Analysis of an End Launcher for an X-Band Rectangular Waveguide

The analysis of an end-launcher type, coaxial-to-rectangular waveguide transition, exciting dominant TE/sub 01/ mode in X-band rectangular waveguide is presented. Expressions for the real and imaginary parts of the input impedance seen by the coaxial line are derived for the general case of an offset launcher using self-reaction of an assumed current over the loop. The dimensions of the combined electric and magnetic loops having low input VSWR in the coaxial line are determined. There is satisfactory agreement between theoretical and experimental results.
Design of Microirrigation Submain Units using the Lateral Discharge Equation

A method was developed for designing microirrigation submain units. Hydraulic analysis is implemented by combining the lateral discharge equation, the back step method, the forward step method, and the golden section search. When the required uniformity of water application, the required average emitter discharge, one parameter of the lateral length and diameter, one parameter of the submain length and diameter, and the field conditions are given, the unknown parameters of the lateral and submain, the best submain position (paired laterals), and the operating pressure head of a submain unit can be accurately designed using a personal computer. The calculations in design procedures are simple and fast. It was found that the lengths of a lateral and submain may have two or three solutions and the diameters may have two solutions for some values of a uniformity coefficient of water application in slope conditions.
Formal and Informal Contracting in Interfirms Relationships

In this paper, using a large database concerning more than 3 400 strategic relationships in force between French firms in 2003, we study the way they govern their relationships. More precisely, we show that depending on the characteristics of their relationships observed governance structures features combined relational as well as formal elements. Those two dimensions might be complement or substitute depending on characteristics and expected results of the relationships as well as reputation of contracting partners. Our results thus suggest that competing theoretical frameworks focusing on informal agreements or on formal agreements might miss a part of the story. Our results, by showing how those dimensions might complete or substitute each other shed new light on previous empirical works on this issue.
The effect of cylinder deactivation on the performance of a diesel engine

In this paper, the deactivation of diesel engines used in road vehicles was studied because it changes the progress of combustion, which might be advantageous to the economy of engines. Based on a one-dimensional simulation and an experimental study of a supercharged diesel engine which deactivates half the cylinders at light loads and idle, this paper presents results which show that, when the mean effective pressure of the engine is lower than 3.5 bar, cylinder deactivation decreases the brake specific fuel consumption by 0–17% and by 26% at idle if the intake valves and the exhaust valves are kept closed at the same time. However, the engine and the supercharger do not match well after deactivation and the mass of intake air decreased greatly, which also resulted in a large decrease in the nitrogen oxide emissions.
Decentralised coordination of power system operation using dual evolutionary programming

This paper proposes a decentralised coordination framework for operating power systems with dispersed generation and energy storage. It then develops a novel decentralised approach for calculating the system optimal operation of resources with intertemporal links. The method combines elements of dynamic programming with evolutionary programming. Each power system resource evolves a 'future benefit' function that describes the impact of its own possible decisions on future power system operation. This 'dual evolutionary programming' approach can handle complex resource models and objective functions. It is shown to be computationally faster than discrete dynamic programming for a number of power system problems with multiple storage resources.
Zero Energy Windows

LBNL-60049 To be presented and published in the Proceedings of the 2006 ACEEE Summer Study on Energy Efficiency in Buildings, August 13-18, 2006, Pacific Grove, CA. Zero Energy Windows Dariush Arasteh, Steve Selkowitz, Josh Apte Lawrence Berkeley National Laboratory Marc LaFrance U.S. Department of Energy This work is supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Building Technologies, U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
Robust Estimation of High-dimensional non-Gaussian Autoregressive Models

High dimensional non-Gaussian time series data are increasingly encountered in a wide range of applications. Conventional estimation methods and technical tools are inadequate when it comes to ultra high dimensional and heavy-tailed data. We investigate robust estimation of high dimensional autoregressive models with fat-tailed innovation vectors by solving a regularized regression problem using convex robust loss function. As a significant improvement, the dimension can be allowed to increase exponentially with the sample size to ensure consistency under very mild moment conditions. To develop the consistency theory, we establish a new Bernstein type inequality for the sum of autoregressive models. Numerical results indicate a good performance of robust estimates.
Modeling Service Trade-Offs in Air Itinerary Choices

The application of a mixed logit approach using stated-preference survey data to the development of itinerary choice models is described. The models include the effects on itinerary choices of airline, airport, aircraft type, fare, access time, flight time, scheduled arrival time, and on-time performance. The empirical results demonstrate the importance of explicitly accounting for traveler preference heterogeneities by using segmentation by trip purpose, interaction effects involving frequent flier status, and random parameter specifications. Explicitly including preference heterogeneity by using the mixed logit specification results in significant statistical improvements and important coefficient differences as compared with using a standard fixed-parameter logit model. The calculated marginal rates of substitution show the relative importance that travelers assign to key service variations among itineraries. All service features that were included in the model had significant values to travelers, and the values were affected, as would be expected, by the traveler's frequent flier status. Although current reservation and ticketing services provide information to prospective travelers on most of these itinerary features, most services do not report on-time performance, which, however, can be an important selection criterion for travelers.
Does Institutional Distance Affect Transnational Knowledge Spillovers Between Countries?

This article studies the impacts of the institutional distances between home and host countries on technology spillovers and reverse technology spillovers of multinational investment. Extant research has studied the impacts of the technological spillover effects of foreign direct investment (FDI) and outward FDI (OFDI) on the technology innovation of home and host countries and the impact of the institutional environment on the technological spillovers of transnational investments. However, these studies have failed to distinguish the impacts of institutional profiles and institutional distances on multinational investments. The impacts of institutional profiles and institutional distances on cross-border business activities require additional, diligent theoretical and empirical research. We believe that the technological spillovers of multinational enterprises (MNEs) are affected not only by their institutional environments but also (and perhaps more importantly) by the institutional distances between home and host countries. We used data for Chinese investment in 11 countries over the past 15 years, and the analytical results showed some interesting conclusions. China's OFDI has not produced significant technology spillover effects, so overseas investment by MNEs needs to be more mature and return to rationality. However, FDI has a significant technology spillover effect, and institutional distance has indeed hindered FDI technology spillovers in China.
A Single-Stage Boost-Derived T-Type Inverter With Self-Balanced Capacitor Voltage

This article proposes a novel single-stage three-level buck–boost inverter based on voltage multiplier cells. The characteristics of the proposed topology are listed as 1) providing buck–boost operation in a single-stage power conversion, 2) reducing the number of components, 3) low component rating, and 4) automatic capacitor voltage balance without requiring any voltage sensors. A space-vector modulation (SVM) technique is introduced to control the proposed inverter and improve the quality of the output voltage waveform. In the SVM scheme, three nearest vectors are used to generate the output voltage vector in any switching period. The upper shoot-through switching state is adopted to provide buck–boost operations. This state is added within the small N-type vectors. The operating states, steady-state analysis, component selections, and comparison analysis are detailed. A 1-kVA laboratory prototype is built to validate the effectiveness of the proposed inverter. The experimental results show that the switch operates under a zero-voltage switching conditions for both turning-on and -off. Moreover, the capacitor voltage self-balanced characteristic keeps the voltage difference within 3.8% of the average capacitor voltage.
Mapping rework causes and effects using artificial neural networks

Rework can have adverse effects on the performance and productivity of construction projects. Techniques such as artificial neural networks (ANN) are widely used for prediction and classification problems and thus can be used to map the causes and effects of rework. The traditional back propagation neural network and general regression neural network data from 112 Hong Kong construction projects are used to examine the influence of rework causes on the various project performance indicators such as cost overrun, time overrun, and contractual claims. The results from this research could be used to develop forecasting systems and appropriate intelligent decision support frameworks for enhancing performance in construction projects. Furthermore, analysis of the neural network results indicates that the general regression neural network architecture is better suited for modelling rework causes and their impacts on project performance. Les travaux de reprise peuvent avoir des effets néfastes sur les performances et la productivité dans les projets de construction. Des techniques comme les réseaux neuronaux artificiels (AAN) sont largement utilisés pour résoudre les problèmes de prévision et de classification et peuvent donc servir à cartographier les causes et les effets des travaux de reprise. Les données de réseaux neuronaux classiques à rétropropagation et les données de réseaux neuronaux à régression générale provenant de 112 projets de construction à Hong Kong sont utilisées pour examiner l'influence des travaux de reprise sur les divers indicateurs de performances de projets, comme les dépassements de coûts, les dépassements de délais et les réclamations contractuelles. Les résultats de cette recherche pourraient servir à développer des systèmes de prévision et des cadres appropriés et intelligents de soutien à la décision pour améliorer les performances de projets de construction. En outre, l'analyse des résultats de réseaux neuronaux indique que l'architecture du réseau neuronal à régression générale convient mieux à la modélisation des causes des travaux de reprise et à leurs conséquences sur les performances des projets. Mots cle´s: projet de construction, dépassement des coûts, productivité, performances de projets, travaux de reprise, dépassement des délais
Windage Heating of Air Passing Through Labyrinth Seals

The viscous drag on rotating components in gas turbine engines represents both a direct loss of power from the cycle and an input of heat into the secondary (cooling) air system. Hotter cooling air in turn means increased flow requirements. The effects of windage on performance are therefore compounded.To facilitate accurate temperature predictions of highly stressed components, information is needed on windage characteristics of all elements in the secondary cooling system. Much information is available in the literature for discs, cones, cylinders, bolts etc but little has been published on windage heating in high speed seals.Results are presented for experiments carried out (at representative non-dimensional conditions) on different designs of labyrinth seals. The results are compared with values calculated from the simple momentum balance theory suggested by McGreeham and Ko (1989) and with several values determined from CFD analysis.Copyright © 1994 by ASME
Globex: wave dynamics on a gently sloping laboraty beach

As waves approach the shore, non-linearity in their dynamics becomes increasingly important. Most of our understanding of wave non-linearity has resulted from theoretical work, laboratory experiments and field studies on beaches slopes steeper than about 1:40. Here, very strong non-linear processes happen locally and on a short time scale, as demonstrated by narrow surf zones with plunging or collapsing breakers. The non-linearity on lower sloping beaches, typical of high-energy dissipative environments, has a different character, as it can now build up over a long period of time in a cross-shore extensive area. This second case of strong non-linearity is not well understood. This contribution serves to introduce the GLOBEX project, during which a high-resolution (in space and time) data set of the cross-shore evolution of short and infragravity waves was collected on a low-sloping (1:80) non-mobile laboratory beach for a range of wave conditions. Various other presentations at the conference will build on this introductory contribution.