Miracle-dz/UniFAR-FTUs huggingface dataset:
School Climate and Self-Efficacy as Predictor of Job Satisfaction

: In this research, the direct effect of school climate on teacher job satisfaction and the indirect effect of school climate on job satisfaction through self-efficacy were investigated. International Teaching and Learning Survey-2018 data collected by the Organization for Economic Co-operation and Development from Turkish teachers were used in the study. The research data were obtained from the responses of the participants to the Teacher SelfEfficacy, Job Satisfaction and School Climate scales in the International Teaching and Learning Research Teacher Questionnaire. Although a total of 15498 teachers working in primary school, lower secondary school and upper secondary school participated in the research, participants with missing data were excluded from the analysis. Within the scope of the research, data obtained from 12111 teachers were used. Following the testing of the constructed model with the structural equation model, the following results were obtained: Teachers’ self-efficacy directly affects job satisfaction. The perceived disciplinary dimension of the school climate directly and negatively affects job satisfaction. The other two dimensions of the school climate, teacher-student relations and the dimensions of participation among stakeholders, affect job satisfaction directly and positively. All dimensions of the school climate indirectly affect job satisfaction through self-efficacy.
Grinding precision forecasting in optical aspheric grinding using artificial neural network and genetic algorithm

A new approach based on an artificial neural network (ANN) was presented for the prediction of machining precision of optical aspheric grinding. The ANN model is based on Globally Convergent Adaptive Quick Back Propagation algorithm (GCAOBP). A genetic algorithm (GA) was then applied to the trained ANN model to predict the gridding precision. The integrated GCAOBP-GA algorithm was successful in predicting the Root Mean Square of profile error (RMS) of optical aspheric workpiece in parallel grinding method using machining parameters. The results of experiments have shown that RMS of machined workpiece in parallel grinding can be predicted effectively through this approach.
The Global Conductivity Structure of the Lunar Upper and Midmantle

Magnetic sounding is a powerful tool to explore the interior of planetary bodies through the electrical conductivity structure. The electrical conductivity structure of the lunar mantle has previously been derived from surface magnetic field measurements as part of the Apollo 12 mission and concurrent magnetometer data acquired from orbit through the Explorer 35 satellite. Here, we derive the first global conductivity structure of the upper and midmantle using only satellite magnetometer data collected by the recent Lunar Prospector and Kaguya Selene satellite missions. We show that the field in the geomagnetic tail exhibits a simple geometrical structure and can be well described by a single spherical harmonic of degree and order one. Employing this information about the inducing field geometry and assuming a potential representation of the field in the geomagnetic tail, we derive a frequency‐dependent transfer function and invert it for a one‐dimensional (1‐D) electrical conductivity profile of the lunar upper and midmantle. Our global transfer function shows striking similarity with the local one obtained from joint analysis of Apollo 12 and Explorer 35 magnetometer data. This indicates the lack of local variations at the Apollo 12 landing site compared to the globally averaged upper to midmantle electrical conductivity structure.
Aceh's special autonomy in the perspective of asymmetric decentralization policies

This paper aims to reveal the implementation of autonomy in Aceh by using descriptive research methods through literature review. Based on the analysis of the literature sources, it can be found that the policy of regulation and division of territory as well as the pattern of relations between the Central Government and Regional Governments at the beginning of independence were pragmatic and tended to generalize, this could lead to armed conflicts such as in Aceh. Thus, an asymmetric decentralization policy is needed so that it can meet the demands of the Acehnese people, which historically, geographically, and socio-religiously have their own uniqueness and have made a major contribution to the struggle to achieve and maintain Indonesian independence.
Damage Detection in Prestressed Concrete Slabs Using Wavelet Analysis of Vibration Responses in the Time Domain

Detection of damages in structures during their service life is of vital importance and under attention of researchers. In this paper, it is attempted to identify damages in prestressed concrete slabs using vibration responses obtained from modal testing in the time domain. For this purpose, first some damage scenarios with various geometric shapes and at different locations of numerical models, corresponding to a prestressed concrete slab, were created. Next, the impact hammer force in the modal test was simulated and the accelerations time histories at different degrees of freedom corresponding to the numerical models per two states of damaged and undamaged structure were selected as the inputs for a number of damage indices to identify the damage locations. Some of these damage scenarios have been located at the middle of prestressed concrete slabs and some at the corners. The proposed damage indices in this research are obtained based on the area under the diagram of acceleration time histories, maximum and also the area under diagram of detail coefficients of the wavelet transform using the three wavelet families of Daubechies, Biorthogonal and Reverse Biorthogonal. The results showed that using damage index obtained from the area under diagram of detail coefficients of wavelet transform with the mother wavelet db2 could detect the damage scenarios at the middle and corners of the slab with a well precision. Furthermore, the damage scenarios at the corners of numerical models could be detected properly by using the mother wavelet rbio2.2 in the proposed damage index.
HIGH SPEED IMPACT AND AGGRESSIVITY ANALYSIS OF THE CALSPAN/CHRYSLER RESEARCH SAFETY VEHICLE (RSV)

The Calspan/Chrysler Research Safety Vehicle Program has developed a light weight vehicle with increased occupant and pedestrian crash protection over present vehicles. It was determined that for an efficient structure, high speed car-to-car aggressivity is not a function of either the struck or striking vehicle alone, but rather is a structural burden that must be shared by both vehicles.
Enhanced densely dehazing network for single image haze removal under railway scenes

This paper aims to propose an enhanced densely dehazing network to suit railway scenes’ features and improve the visual quality degraded by haze and fog. ,It is an end-to-end network based on DenseNet. The authors design enhanced dense blocks and fuse them in a pyramid pooling module for visual data’s local and global features. Multiple ablation studies have been conducted to show the effects of each module proposed in this paper. ,The authors have compared dehazed results on real hazy images and railway hazy images of state-of-the-art dehazing networks with the dehazed results in data quality. Finally, an object-detection test is taken to judge the edge information preservation after haze removal. All results demonstrate that the proposed dehazing network performs better under railway scenes in detail. ,This study provides a new method for image enhancing in the railway monitoring system.
Accurate fault location technique for power transmission lines

The authors describe a very accurate fault location technique which uses post-fault voltage and current derived at both line ends. Fault location is independent of fault resistance and the method does not require any knowledge of source impedance. It maintains high accuracy for untransposed lines and no fault type identification is required. The authors present the theory of the technique and the results of simulation studies to determine its performance. < >
The effect of triple well implant dose on performance of NMOS transistors

The application of triple well (TW) structures provides important advantages for different types of silicon-integrated circuits. In a triple-well technology, the addition of a high energy implant allows the creation of a separate tub which is junction isolated from the substrate. We study the dependence of NMOS transistor performance and leakage current in diode test structures on the dose of a 1 MeV phosphorus TW implant. We observe that initial increase in the implant dose leads to increase in threshold voltage of the devices with a peak at a dose of about 1 /spl times/ 10/sup 14/ cm/sup -2/. With a further increase in dose the threshold voltage decreases: the decrease corresponds to the onset of Si amorphization induced by the TW implant. We explain this anomalous behavior using a model that accounts for suppression, due to formation of a buried amorphous layer, of transient enhanced diffusion of boron in the n-channel region. The dose dependence of leakage current in junction diode structures is explained by the formation of threading dislocations.
High-Order-Mode Cavity Fed Antenna Arrays for Diverse Polarizations With Compact Size, High Gain, and High Efficiency

In this article, a novel structure of the high-order-mode cavity fed sequentially rotated patch antenna array is proposed for diverse polarizations. The diverse polarizations, including right-hand circular polarization (RHCP), left-hand circular polarization (LHCP), −45° linear polarization (LP), 0° LP, 45° LP, and 90° LP, are achieved based on the current distribution on the patches and different electric field modes in the high-order-mode cavity by adjusting the phase and amplitude of the two orthogonal feeding ports. Furthermore, from the electric field distribution in the high-order-mode cavity with different feeding schemes, arbitrary polarizations were analyzed and obtained. An $8\,\times \, 8$ dual-circularly polarized (dual-CP) antenna is demonstrated. Good agreement between the simulated and measured results is obtained, validating the design. The experimental results show that the impedance bandwidths (<−10 dB) for the two ports are 14.2% and 13.3%. The 3 dB axial ratio (AR) overlapping bandwidth is 10.5%. The maximum gain is 25 dBic. Attributed to its compact size, high gain, and high efficiency, the presented array is a good candidate for millimeter-wave applications.
Motives for Playing Video Games in the Context of Time. Results of Empirical Research

Video games are one of the most popular leisure activities. The multitude of games and ways of playing (individually, in a team, online, offline, etc.) allows players to meet their various needs. Thus, from the point of view of game developers, it becomes important to recognise these needs and adapt the product to the expectations of players. Taking the dynamic development of the video game market into account, it seems significant to recognise the players’ motives for spending their time on playing. Therefore, the aim of the article is to identify the players’ motives in terms of the type of need being met and to find an answer to the question whether there is a relationship between the time spent on games and the motives for playing (does the fact that we play longer change the type of need being satisfied? ). The text refers to the results of research conducted in April 2020 on a sample of 2,527 players in Poland. The subjects of the study were people who actively played video games – every day or several times a week.
FLOW DEVELOPMENT IN RADIAL TURBINE ROTORS

This paper surveys the development of the primary and secondary flows in the rotors of radial-inflow turbines. Information previously scattered throughout the literature has been brought together, and it has been possible to create a coherent picture and a good understanding of the complex flow processes which occur. The secondary flow is generated by cross-passage forces due to the turning of the blades, and Coriolis forces. Near the leading edge these give rise to a strong vortex adjacent to the pressure surface, moving low momentum fluid from hub to tip. This feature helps to explain why best efficiency occurs typically at 20°–30° negative incidence. Attempts to correlate the optimum incidence angle using traditional slip factor expressions can give quite misleading results, but a new approach based on the blade loading shows considerable promise. Nearer the exit there is motion of fluid from hub to tip near the suction surface and a vortex in the suction surface-shroud corner, and this is linked to the highly non-uniform flow at exit. The latter effect makes the prediction and correlation of rotor deviation information very difficult, despite the development of a rational exit averaging procedure. The present deviation data are sparse and not easy to correlate.Copyright © 1996 by ASME
On Solving the Problem of Quasi-Two-Dimensional Supercrystal Nonlinear Resonance Response

Taking into account the foundations of the generalized two-level scheme, an analytical solution to the problem of the evolution of superradiance in a quasi-two-dimensional supercrystal formed by quantum dots is obtained under homogeneous lasing ﬁeld assumption in the resonant medium of the quasicrystal. The calculation was performed for the physical parameters of a semiconductor structure with quantum-well eﬀects in the presence of resonant nonlinearity and intraband relaxation. We use the generalized two-level scheme, which allows us to take into account the self-modulating spectral broadening of the light ﬁeld due to the absorption of radiation in quasi-resonant transitions in the quantum mechanical material equations, which are solved together with the ﬁeld coupling equations. A relation is formulated that is analo-gous to the law of conservation of the polar angle of the Bloch vector for the more general case of interaction under consideration, in which, along with the phase nonlinearity of the response, the spread rate of active dipoles within the spectral line width is taken into account (i.e., the ﬁniteness of the phase relaxation time of elementary emitters). The use of the Bloch vector formalism in this case makes it possible to obtain an analytical solution of the original modiﬁcation of the nonlinear system of equations for the semiconductor supercrystals response variables and to calculate the shape of the superradiance pulses. The calculations predict the pronounced asymmetry of the pulses emitted by the semiconductor supercrystals. The calculated estimates of the time dynamics of the superradiance process, taking into account the nonlinearities typical for the resonant response, can be used in the development of methods for obtaining and proﬁling optical pulses in the sub-picosecond range of durations in modern compact nanophotonics devices.
A multiband antenna with MIMO implementation for USB dongle size wireless devices

A compact multiband antenna is proposed for future 4G Long‐Term Evolution (LTE) wireless devices of USB dongle. The antenna covers LTE band‐3 (1710–1880 MHz)/DCS1800 and LTE band‐7 (2500–2690 MHZ based on S11 = −6 dB matching criterion. Next the multiple‐input‐multiple‐output configuration of this antenna is investigated. Prototype antennas were fabricated and experimentally verified. Both measured and simulated results are presented. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1990–1994, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26967
Experimental measurement of Heavy Flavours and jets

Recent results of the heavy flavors and jet production in proton-proton collisions using the data collected by the ALICE, ATLAS, CMS, and LHCb detector at the Large Hadron Collider are presented. These measurements are crucial for precise tests of electroweak and next-to-leadingorder pQCD calculations, improving the understanding of the proton structure. The measured results are compared with theoretical predictions from several Monte Carlo event generators using different parton shower simulations which provide valuable inputs for tuning of Monte Carlo event generators.
1200-V, 50-A, Silicon Carbide Vertical Junction Field Effect Transistors for Power Switching Applications

High-voltage normally-on VJFETs of 0.19 cm2 and 0.096 cm2 areas were manufactured in seven photolithographic levels with no epitaxial regrowth and a single ion implantation event. A self aligned guard ring structure provided edge termination. At a gate bias of -36 V the 0.096 cm2 VJFET blocks 1980 V, which corresponds to 91% of the 12 μm drift layer’s avalanche breakdown voltage limit. It outputs 25 A at a forward drain voltage drop of 2 V (368 A/cm2, 735 W/cm2) and a gate current of 4 mA. The specific on-resistance is 5.4 mΩ cm2. The 0.19 cm2 VJFET blocks 1200 V at a gate bias of -26 V. It outputs 54 A at a forward drain voltage drop of 2 V (378 A/cm2, 755 W/cm2) and a gate current of 12 mA, with a specific on-resistance of 5.6 mΩ cm2. The VJFETs demonstrated low gate-to-source leakage currents with sharp onsets of avalanche breakdown.
Characterization and expression analysis of heat shock protein 90β from golden pompano (Trachinotus ovatus, Linnaeus 1758) in responses to stock density stress and Cryptocaryon irritans infection

Heat shock protein 90 family, a class highly conserved protein and important molecular chaperone and its plays a role in enhancing animal adaptability to environmental stress and improving immunity. In this study, a full-length HSP90β cDNA (ToHSP90β) sequence was identified from Trachinotus ovatus. The cDNA of ToHSP90β was 2648 base-pairs (bp) long and contained a 5′-terminal untranslated region of 130 bp, a 3′-terminal untranslated region of 334 bp, and the open reading frame length 2184 bp, which can encode 728 amino acids. The ToHSP90β has a heat shock protein 90 family signature. The ToHSP90β amino acid sequence has high homology with other fish HSP90β amino acids (92.5-99.17%) and contains five conserved signal regions and a structural feature of the cytoplasmic HSP90 family. Phylogenetic tree analysis indicated that ToHSP90β was most closely related to Seriola dumerili HSP90β. Tissues expression analysis showed that the ToHSP90β was expressed in all nine tissues of T. ovatus, and its expression was the highest in the intestine. The stocking density significantly affected the expression of ToHSP90β in the kidney and brain tissues, and its expression levels increased significantly with increasing stocking densities, indicating that it plays an important regulatory role in the process of T. ovatus’ chronic stress response. After Cryptocaryon irritans infection, the mRNA expression of ToHSP90β was signiﬁcantly increased in liver and kidney tissues, indicating that ToHSP90β would be involved in the immune regulatory response. This study was the first to analyze the expression pattern of HSP90β mRNA in T. ovatus tissues and their expression responses to stocking density stress and C. irritans infection. To provide a theoretical basis for further study of the function of fish HSP90 and its physiological mechanism in environmental stress and parasite infection.
A Dynamic Power Management Mechanism for Embedded System with Micro-Kernel Operating System

As mobile devices of embedded systems prevail in our daily life, energy saving emerges as one very important issue and power management techniques are desirable. This paper presents the design and the implementation of a dynamic power management mechanism (DPMM) for embedded systems running micro-kernel operating systems. The DPMM is composed of policy manager, DVFS (Dynamic Voltage Frequency Scaling) controller, DPM (Dynamic Power Management) server, resource management flags, and DPM library. They are imple-mented to execute on an embedded system platform equipped with an XScale PXA270 processor and various I/O interfaces or devices running Zinix micro-kernel operating system. Testing results indicate that this DPMM effectively achieves power management in the system.
Genetic Feature Selection Applied to KOSPI and Cryptocurrency Price Prediction

Feature selection reduces the dimension of input variables by eliminating irrelevant features. We propose feature selection techniques based on a genetic algorithm, which is a metaheuristic inspired by a natural selection process. We compare two types of feature selection for predicting a stock market index and cryptocurrency price. The first method is a newly devised genetic filter involving a fitness function designed to increase the relevance between the target and the selected features and decrease the redundancy between the selected features. The second method is a genetic wrapper, whereby we can find the better feature subsets related to KOPSI by exploring the solution space more thoroughly. Both genetic feature selection methods improved the predictive performance of various regression functions. Our best model was applied to predict the KOSPI, cryptocurrency price, and their respective trends after COVID-19.
A Wideband Dual V shape Slot Microstrip Antenna for Wireless Applications

In this paper, a wideband slot antenna fed by microstrip line with dual V-shape slot operates in wireless communication. This work design and perform characteristics of array structure. The antenna is designed for working at 2.45GHz and covers multiband ,GPS(1.575GHz) ,DCS(1.710 to 1.880GHz), PCS(1.850 to1.990GHz), UMTS(1.920 to2.170GHz), Bluetooth (2.400 to 2.484GHz) ,WLAN(2.40GHz to 2.48GHz) IEEE802.11b/g,WiMAX(2.312 to 2.352GHz) and bidirectional radiation pattern. The Simulation and design optimization are done by a Commercial software (IE3D) using Moment Method(MoM). Simulation of the results are given and compared with those antennas operation as same band. Its VSWR 4.5dBi, uses FR4 substrate (low cost) .
Towards the biological degradation of plastics: Genetic engineering of Saccharomyces cerevisiae to secrete Ideonella sakaiensis derived PETase.

In this project we demonstrated that two strains of Saccharomyces cerevisiae, were able to produce the heterologous protein Polyethylene Terephthalate (PET) hydrolase from the novel bacterium Ideonella sakaiensis. This novel enzyme has been shown to have the capability of degrading PET into its subsequent monomers, Ethylene Glycol and Terephthalic acid. The original native form of PET hydrolase was mutated by the Beckham lab (Skaf et al. 2018) to increase efficiency of degradation, the two residues changed were at the active site which resulted in the narrowing of the cleft. The residues changed were Tryptophan at position 159 to a Histidine residue; and Serine at position 238 to a Phenylalanine. In this study the double mutant form of the enzyme was used. In this project we also demonstrated the capability of PETase expressed by Saccharomyces cerevisiae to cause surface changes on waste PET samples. Lastly, we have also shown that Saccharomyces cerevisiae has the ability to form cell clusters similar to biofilms on a PET surface. All of these findings point to the viability of using Saccharomyces cerevisiae as a novel system for plastic waste removal in an industrial setting.