Miracle-dz/UniFAR-FTUs huggingface dataset:
The Impact of Working from Home on Compulsive Buying Behavior

This research is motivated by the working from home phenomenon which is one of the consequences of the COVID-19 pandemic. The purpose of this study is to investigate whether the work from home system affects the consumption patterns of workers. To achieve the research objectives, data were collected through questionnaires which were distributed to workers in Indonesia who implement the work from home system. Previous studies noted that working from home will increase the intensity of internet use, causing depression problems among workers which in turn affects their buying patterns. The survey participants are 145 workers who have monthly income and have worked in the current employer for minimum 6 months. Data collected were analyzed using a quantitative method, in which the relationship between two or more variables are examined. The mediating theoretical model was tested using Process Model 4. Results revealed that workers who work from home have higher tendency to involve in compulsive buying behavior than those who work onsite. We also found that the effect was mediated by the feeling of loneliness. Theoretical and practical contributions are discussed.
Young driver perceptions of police traffic enforcement and self reported driving offences

Purpose - Road policing is a key method used to improve driver compliance with road laws. However, we have a very limited understanding of the perceptions of young drivers regarding police enforcement of road laws. This paper addresses this gap. Design/Methodology/Approach - Within this study 238 young drivers from Queensland, Australia, aged 17-24 years (M = 18, SD = 1.54), with a provisional (intermediate) driver’s licence completed an online survey regarding their perceptions of police enforcement and their driver thrill seeking tendencies. This study considered whether these factors influenced self-reported transient (e.g., travelling speed) and fixed (e.g., blood alcohol concentration) road violations by the young drivers. Findings - The results indicate that being detected by police for a traffic offence, and the frequency with which they display P-plates on their vehicle to indicate their licence status, are associated with both self-reported transient and fixed rule violations. Licence type, police avoidance behaviours and driver thrill seeking affected transient rule violations only, while perceptions of police enforcement affected fixed rule violations only. Practical implications - This study suggests that police enforcement of young driver violations of traffic laws may not be as effective as expected and that we need to improve the way in which police enforce road laws for young novice drivers. Originality/value - This paper identifies that perceptions of police enforcement by young drivers does not influence all types of road offences.
Device Breakdown and Dynamic effects in GaN Power Switching Devices: Dependencies on Material Properties and Device Design

High voltage GaN based transistors already showed promising de-vice properties which makes them very attractive for future highly efficient power switching application. To further optimize device switching performance at high bias voltages the dependency of de-vice breakdown and dynamic effects on device layer epitaxy and processing has to be analyzed. This paper discusses the dependen-cies of breakdown events, predominantly vertical breakdown be-tween the device on the chip front side and the conductive n-type SiC or Si substrate on various technological parameters. They comprise high voltage buffer design and material quality, SiC sub-strate conductivity as well as metal contact technology of GaN HEMT devices. Furthermore a correlation between many of those parameters and dynamic switching properties has been determined. Physical mechanisms are then proposed to explain the basic inter-dependencies.
ACEC2012- PEDAGOGY! IPADOLOGY! NETBOOKOLOGY! LEARNING WITH MOBILE DEVICES.

This paper explores two different schools’ approaches to implementing an iPad program and a Netbook program to a year level of students. The aim of the study was to determine how these mobile devices were being used in the classroom and whether they enhanced teaching and learning. The experiences of students and parents were obtained through questionnaires and the teacher’s reflections were obtained through interviews. The data were triangulated to determine how iPads and Netbooks were utilised in the classroom, and if there were any concerns about the use of each device. The research findings are presented in a thematic style, and provide an insight into how each device is used in a variety of subjects and at home. The paper concludes with some recommendations to inform school principals and leaders about the effectiveness of these devices as an educational tool.
Optimal Power Flow via Teaching-Learning-Studying-Based Optimization Algorithm

Abstract The teaching-learning-based optimizer (TLBO) algorithm is a powerful and efficient optimization algorithm. However it is prone to getting stuck in local optima. In order to improve the global optimization performance of TLBO, this study proposes a modified version of TLBO, called teaching-learning-studying-based optimizer (TLSBO). The proposed enhancement is based on adding a new strategy to TLBO, named studying strategy, in which each member uses the information from another randomly selected individual for improving its position. TLSBO is then used for solving different standard real-parameter benchmark functions and also various types of nonlinear optimal power flow (OPF) problems, whose results prove that TLSBO has faster convergence, higher quality for final optimal solution, and more power for escaping from convergence to local optima compared to original TLBO.
Feature Matching-based Approaches to Improve the Robustness of Android Visual GUI Testing

In automated Visual GUI Testing (VGT) for Android devices, the available tools often suffer from low robustness to mobile fragmentation, leading to incorrect results when running the same tests on different devices. To soften these issues, we evaluate two feature matching-based approaches for widget detection in VGT scripts, which use, respectively, the complete full-screen snapshot of the application (Fullscreen) and the cropped images of its widgets (Cropped) as visual locators to match on emulated devices. Our analysis includes validating the portability of different feature-based visual locators over various apps and devices and evaluating their robustness in terms of cross-device portability and correctly executed interactions. We assessed our results through a comparison with two state-of-the-art tools, EyeAutomate and Sikuli. Despite a limited increase in the computational burden, our Fullscreen approach outperformed state-of-the-art tools in terms of correctly identified locators across a wide range of devices and led to a 30% increase in passing tests. Our work shows that VGT tools’ dependability can be improved by bridging the testing and computer vision communities. This connection enables the design of algorithms targeted to domain-specific needs and thus inherently more usable and robust.
Team Coordination and Strategies Under Automation

This study evaluated the effects of different forms of automation on team communication and coordination in a complex decision making task. Two person teams performed a Theatre Defense task in which they defended a home base from enemy aircraft attack using two networked computer workstations. Four automation conditions were simulated with computer assistance applied to information acquisition, information analysis, and decision making functions across two levels of task difficulty. Dependent measures for the experiment included team performance, counts of different types of verbal communication, team coordination ratings by external observers, and team member subjective workload ratings. Results on coordination ratings, communication counts, and correlations between communication and team effectiveness measures agreed with historical research showing that high performing teams exhibit efficient communication and frequent planning and situation assessments. In general, it was observed that automation conditions that support these behaviors by removing or reducing requirements for continuous verbal information transfer allow more time for sharing of a wider range of situation assessment information and development of more effective team strategies.
Evaluation and Analysis of Curvature-Corrected Filter-based Turbulent Model

Abstract Prediction of the characteristics of turbulent flow with streamline curvature is of great importance in engineering applications. In this paper, a curvature-corrected filter-based turbulent model is suggested by applying the Spalart-Shur correction term. This new version of the model (FBM-CC) has been tested and verified through two canonical benchmarks with strong streamline curvature: the flow in a two-dimensional U-duct and the free shear flow past NACA0012 airfoil with a round tip. Predictions of the FBM-CC model are compared with available experimental data and the corresponding results of the original FBM model. The numerical results show that the FBM-CC model significantly improves the sensitivity to the effect of streamline curvature and the numerical calculation accuracy, in relatively good agreement with the experimental data, which suggests that this proposed model may be employed to simulate the turbulent curved flow in engineering applications.
MEASURING USER EXPERIENCE IN AN ONLINE STORE USING PULSE AND HEART METRICS

MEASURING USER EXPERIENCE IN AN ONLINE STORE USING PULSE AND HEART METRICS Paulus Insap Santosa Department of Electrical Engineering and Information Technology, Universitas Gadjah Mada Email: insap@ugm.ac. id Abstrak Beberapa sukses faktor toko daring dapat diringkas ke dalam elemen kebergunaan toko daring tersebut. Secara umum, kebergunaan berfokus pada kegunaan dan dapat digunakanya toko daring untuk membantu kustomer belanja secara daring. Akhir-akhir ini pengalaman positif pengguna ketika berbelanja secara daring menjadi tuntutan yang semakin nyata. Kebergunaan dan pengalaman pengguna adalah dua hal yang berbeda meskipun sangat berkaitan. Kebergunaan berfokus pada produk, dan pengalaman pengguna berfokus pada perasan dan emosi pengguna. Artikel ini melaporkan studi empiris untuk mengidentifikasi faktor yang berkontribusi pada pengalaman positif situs belanja daring. Responden berjumlah 121 yang merupakan mahasiswa yang belum pernah melakukan belanja daring. Para responden dihadapkan pada sebuah toko daring yang menjual beberapa barang. Mereka mengikuti skenario yang memungkinkan mereka melihat hampir semua fitur toko daring. Pengalaman pengguna diukur dengan menggunakan kombinasi metrik PULSE dan HEART dengan beberapa modifikasi untuk disesuaikan dengan keadaan. Analisis data menunjukkan bahwa responden mendapatkan manfaat yang lebih tinggi dibanding biaya yang harus ditanggung, dan kebahaguiaan dan sukses menjalankan tugas merupakan dua peubah yang memberikan pengaruh tertinggi kepada pengalaman pengguna. Kata kunci:pengalaman pengguna, kebergunaan, toko daring, PULSE, HEART, scenario Abstract Several success factors of online store can be summarized as usability. In general, usability focuses on how useful and usable the online store toward helping customers in doing their online shopping. Recently, more demand towards user positive experience becomes apparent. Usability and user experience are two different things but closely related. Usability focuses on products, and user experience focuses on user’s feelings and emotion. This paper reports an empirical study to determine factors contribute to positive experience in an online store success. There were 121 respondents who were students who had never done online shopping. They were exposed to a mockup online store selling several merchandises. They followed certain scenario that allowed them experiencing most online store features. User experience was measured using a combination of PULSE and HEART metrics with some modification to suit the current condition. Data analysis showed that respondents gained more benefit compared to the incurred cost, and happiness and task success were two variables provided more influence to user experience. Keywords: user experience, usability, online store, PULSE, HEART, scenario.
SM-NET: Reconstructing 3D Structured Mesh Models from Single Real-World Image

Image-based 3D structured model reconstruction enables the network to learn the missing information between the dimensions and understand the structure of the 3D model. In this paper, SM-NET is proposed in order to reconstruct 3D structured mesh model based on single real-world image. First, it considers the model as a sequence of parts and designs a shape autoencoder to autoencode 3D model. Second, the network extracts 2.5D information from the real-world image and maps it to the latent space of the shape autoencoder. Finally, both are connected to complete the reconstruction task. Besides, a more reasonable 3D structured model dataset is built to enhance the effect of reconstruction. The experimental results show that we achieve the reconstruction of 3D structured mesh model based on single real-world image, outperforming other approaches.
Application of fiber optic interferometers for Cook-off measurements

A Cook-off test is an experiment to investigate the sensitivity and response of an explosive subtonic to high temperatures. A steel cylindrical Cook-off tube is filled with the explosive material under investigation. During the Cook- off test, the Cook-off tube will be heated up to several hundreds of degrees and, upon explosion, the rate of change of the diameter of the Cook-off tube is monitored to obtain information about the reaction process in the tube. To detect these expansion velocities, TNO has developed a system based on Fiber Optic interferometer. This system includes a Sagnac interferometer and a Mach-Zehnder interferometer. Part of the fiber loop of each interferometer is wrapped around the tube and is indicated as the sensing fiber. The change in the length of the sensing fiber is measured by analyzing the interferometric signals. The phase of the Sagnac interferometric signal is proportional to the rate of change in length of the sensing fiber, while the phase of the Mach- Zehnder interferometric signal is proportional to the absolute length change of the sensing fiber. The simplest method to analyze the interferometric signal is counting the fringes as a function of time. A more dedicated signal-processing scheme is proposed to obtain additional information. This scheme is designed for interferometers with 3 phase shifted output signals. The output signals from both the interferometers were recorded by a Digital Signal Analyzer (DSA). The signal to noise ratio was found to be sufficient. We have carried out several Cook-off experiments with the explosive Comp. B. for different configurations of the Cook-off tube, difference in the reaction process can indeed be observed. One or more oscillations in the expansion velocity of the tube were found at the start of the expansion process. As far as known, the presence of these oscillations has never been reported before. A discrepancy between the results of the two interferometer systems was observed. This is probably caused by the application of two different sensing fibers. A configuration applying a single sensing fiber for both interferometer systems is proposed.
Absolute Reactivity Calibration of Accelerator-Driven Systems after RACE-T Experiments

The RACE-T experiments that were held in november 2005 in the ENEA-Casaccia research center near Rome allowed us to improve our knowledge of the experimental techniques for absolute reactivity calibration at either startup or shutdown phases of accelerator-driven systems. Various experimental techniques for assessing a subcritical level were inter-compared through three different subcritical configurations SC0, SC2 and SC3, about -0.5, -3 and -6 dollars, respectively. The area-ratio method based of the use of a pulsed neutron source appears as the most performing. When the reactivity estimate is expressed in dollar unit, the uncertainties obtained with the area-ratio method were less than 1% for any subcritical configuration. The sensitivity to measurement location was about slightly more than 1% and always less than 4%. Finally, it is noteworthy that the source jerk technique using a transient caused by the pulsed neutron source shutdown provides results in good agreement with those obtained from the area-ratio technique. (authors)
A Rayleigh quotient‐gradient neural network method for computing 𝒵 ‐eigenpairs of general tensors

Recently, Zhao, Zheng, Liang and Xu (A locally and cubically convergent algorithm for computing 𝒵 ‐eigenpairs of symmetric tensors. Numer Linear Algebra Appl, 2020, 27:e2284) studied on an efficient method for computing 𝒵 ‐eigenpairs of symmetric tensors. Whereas, symmetric tensors are just special tensors. This article is concerned with the computation of 𝒵 ‐eigenpairs of general real tensors. We propose a Rayleigh quotient‐gradient neural network model (RGNN) for computing 𝒵 ‐eigenpairs of a general real tensor and the Euler‐type difference rule is used to discretize RGNN model. Theoretical analysis of the convergence for RGNN model is provided. Numerical experiments show that our method can capture all 𝒵 ‐eigenpairs for some small‐scale general tensors and enjoys efficient computation for large‐scale tensors.
Upper Secondary School and University Level Students’ Perceptions of Extractions in Context: Experiences from a Simple Laboratory Experiment

We discuss the pedagogical challenges associated with the current way of introducing extraction in upper secondary school chemistry education. These challenges were identified based on a survey of upper secondary school textbooks and verified through a questionnaire study. To address the identified challenges, we introduce a simple and effective extraction experiment which focuses on building a deeper conceptual understanding of extraction processes. The operationally simple extraction experiment and the accompanying questionnaire revealed that while students have several chemical misconceptions arising from the use of superficial everyday examples, they have all the necessary knowledge for developing a deeper understanding of chemistry. Providing a suitable experimental platform for developing and re-evaluating their knowledge allows the students to reasonably independently re-conceptualize their thinking toward a more coherent view of the surrounding world and the related scientific models. Furthermore, the work analyses the challenges that can be encountered when using everyday examples in teaching, and demonstrates that student-discovered examples of chemical systems can be a powerful method for generating meaningful and relevant ways to introduce scientific phenomena in STEM education.
A new computer-aided tuning scheme for general lossy coupled-resonator bandpass filters based on the Cauchy method

In this paper, a novel analytical circuit model extraction scheme for the computer-aided tuning (CAT) of general lossy coupled-resonator bandpass filters is proposed based on the Cauchy total least squares (TLS) method. The new approach enforces the realisable condition of a set of scattering rational functions that is required for a lossy two-port network in extracting the transfer and reflection characteristics of a filter. Thus, a lossy circuit model can be synthesised from the extracted scattering polynomials using the well-known coupling matrix synthesis method from the literature. To illustrate the effectiveness of the new scheme, measured data of two different kinds of dual-mode filters are used. Using the proposed method, the extracted coupling matrix can give nearly identical frequency responses with the measured data, regardless of whether the filter is well-tuned or badly detuned.
The Critical Need for Increased Selectivity, Not Increased Water Permeability, for Desalination Membranes

Desalination membranes are essential for the treatment of unconventional water sources, such as seawater and wastewater, to alleviate water scarcity. Promising research efforts on novel membrane materials may yield significant performance gains over state-of-the-art thin-film composite (TFC) membranes, which are constrained by the permeability–selectivity trade-off. However, little guidance currently exists on the practical impact of such performance gains, namely enhanced water permeability or enhanced water–solute selectivity. In this critical review, we first discuss the performance of current TFC membranes. We then highlight and provide context for recent module-scale modeling studies that have found limited impact of increased water permeability on the efficiency of desalination processes. Next we cover several important examples of water treatment processes in which inadequate membrane selectivity hinders process efficacy. We conclude with a brief discussion of how the need for enhanced selectivity .
Reconfigurable Flight Control System Design Using Discrete Model Reference Adaptive Control

In this study, the considered system model has the same structure as the ARX(Auto Regressive eXternal) model, and therefore any recursive system identification algorithm can be used. In this study discrete model reference adaptive control scheme is used for the purpose of reconfiguration. Numerical simulation is performed to validate the proposed reconfigurable controller. The control surface slow down case is considered as the fault or damage of the aircraft system, and the performance of the controller is verified for the high performance aircraft.
fMRI investigations into the effect ofspatial attention shifting and visualperception of separation on BOLDresponses in the superior parietallobule

Multiple conflicting claims have been made about the function of the superior parietal lobule (SPL), but no consensus reached. This thesis investigates the functionality of the SPL by challenging existing attention shifting hypotheses and proposing an alternative visual separation hypothesis, in which the perception of changing distances between objects relative to each other is potentially supported in the SPL. Replicating Vandenberghe et al. (2001), activation was observed in the SPL for conditions containing a fixed and displacing element, and minimal activation in the conditions containing only fixed elements. However, a key condition consisting of attention shifts to a single displacing stimulus failed to activate the SPL, which was not compatible with the shifting spatial attention hypothesis. In contrast, the proposed visual separation hypothesis correctly predicted no significant activation in SPL because there was no perception of changing distances between elements. Although, for two conditions, the results could not be explained by this hypothesis: in these two conditions multiple objects displaced in unison and there were no changes in separation. It was proposed that the stimuli’s abrupt displacement to new locations might be responsible for these unexpected results by disrupting the natural occurrence of adaptation. This was further explored in experiment 2, where displacing stimuli comprising of multiple elements again activated the SPL whereas smoothly translating stimuli consisting of multiple elements did not, these results supported the visual separation hypothesis. Experiment 3 explored visual separation further by examining two components: interobject distance and visual angle. Using complex visual stimuli, results showed that the SPL is particularly sensitive to relative changes to interobject distance and visual angle. Finally, these experimental results and previous ones were overlaid on a SPL parcellation (Wang et al., 2015) showing that activation produced by perceiving visual separation was not concentrated in one subregion of SPL, but rather across multiple subregions.