Miracle-dz/UniFAR-FTUs huggingface dataset:
The Longitudinal Relationship between Internet Addiction and Depressive Symptoms in Adolescents: A Random-Intercept Cross-Lagged Panel Model

Internet addiction and depressive symptoms are extremely common problems among teenagers, and the coping strategy has been proved to be closely related to internet addiction and depressive symptoms. Based on three waves of data from a sample of Chinese middle-school students (N = 1545, Mage = 14.88 years old, SD = 1.81; 55.00% females), this study examines the longitudinal relationship between internet addiction and depressive symptoms among adolescents ultilizing the random-intercept cross-lagged panel model. Results revealed a unidirectional predictive effect of depressive symptoms at T2 on internet addiction at T3, but not vice versa, the effect was more significant in the male group. Positive coping strategies had a significant negative predictive effect on the random intercept of internet addiction and depressive symptoms, while negative coping style had a significant positive predictive effect on the random intercept of internet addiction and depressive symptoms. Effective identification and intervention of depressive symptoms may be beneficial to the intervention and prevention for internet addiction, and we should pay attention to the cultivation of middle school students’ positive coping strategies.
Integration of RF-MEMS resonators on submicrometric commercial CMOS technologies

Integration of electrostatically driven and capacitively transduced MEMS resonators in commercial CMOS technologies is discussed. A figure of merit to study the performance of different structural layers and different technologies is defined. High frequency (HF) and very high frequency (VHF) resonance MEMS metal resonators are fabricated on a deep submicron 0.18 µm commercial CMOS technology and are characterized using electrical tests without amplification, demonstrating the applicability of the MEMS fabrication process for future technologies. Moreover, the fabricated devices show comparable performance in terms of Q × fres with previously presented MEMS resonators, whereas the small gap allows obtaining a low motional resistance with a single resonator approach.
Sustainability Awareness of In-Service Physical Education Teachers

Physical Education has been described as a subject with unique characteristics that can contribute to achieving Sustainable Development Goals. However, an analysis of PE teachers’ (PETs) sustainability consciousness has not yet been conducted. For this purpose, a total of 203 PETs completed the validated SCQ-S instrument to measure the three dimensions of sustainable development in three components of consciousness (attitudes, knowledge and behaviours). The results obtained show that the PETs have a high consciousness for sustainable development (SD), except for attitudes within the economic dimension. Sex has been identified as a variable that determines awareness in sustainability with significantly higher scores for women in all the variables evaluated, except for knowledge and behaviour in the social dimension. These findings provide new knowledge within the Physical Education and SD paradigm, serving as a link for future research that aims to harness the benefits of Physical Education for the sustainability of the planet.
A comparative study into the effects of venous and arterial blood on clot microstructure in critically unwell patients. Assessment of the diagnostic potential of a biomarker of haemostasis

Blood for coagulation analysis can be sampled from the arterial or venous system in intensive care units (ICU). The determination of clot microstructure and strength by fractal analysis (d f ) gives valuable information in a range of vascular haemostatic disease and sepsis. We aimed to determine if d f could be measured equally and comparatively in arterial or venous blood, and 45 critically ill patients in an ICU were recruited. d f was found to be readily measured in arterial blood with results comparable to those in venous blood and that add value of d f as a potential marker of haemostasis in these patients.
Intensive Care Antifungal Stewardship Programme Based on T2Candida PCR and Candida Mannan Antigen: A Prospective Study

Non-culture-based biomarkers may improve diagnosis and antifungal treatment (AFT) of invasive candidiasis (IC). We evaluated an antifungal stewardship programme (AFSP) in a prospective intensive care unit (ICU) study, which included T2Candida and Candida mannan antigen (MAg) screening of patients with sepsis and a high risk of IC. Patients with non-neutropenic sepsis and a high risk of IC from two large tertiary ICUs were prospectively included, during a one-year period. IC was classified as proven, likely, possible or unlikely. The AFSP, diagnostic values of T2Candida and MAg, and the consumption of antifungals were evaluated. An amount of 219 patients with 504 T2Candida/MAg samples were included. IC was classified as proven in 29 (13.2%), likely in 7 (3.2%) and possible in 10 (5.5%) patients. Sensitivity/specificity/PPV/NPV values, comparing proven/likely versus unlikely IC, were 47%/100%/94%/90% for BC alone, 50%/97%/75%/90% for T2Candida alone, and 39%/96%/67%/88% for MAg alone. For the combination of T2Candida/MAg taken ≤3 days after AFT initiation, sensitivity/specificity/PPV/NPV was 70%/90%/63%/93%. T2Candida/MAg contributed to early (<3 days) AFT initiation in 13%, early AFT discontinuation in 25% and abstaining from AFT in 24% of patients. No reduction in overall use of AFT during the study period compared with the previous year was observed. An AFSP based on T2Candida and MAg screening contributed to a reduction of unnecessary treatment, but not overall AFT use. The diagnostic performance of T2Candida was lower than previously reported, but increased if T2Candida was combined with MAg.
Detailed design of a 30-kW switched reluctance starter/generator system for a gas turbine engine application

A switched reluctance starter/generator (SR S/G) system has been developed for an aircraft engine application. The system is rated at 30 kW, 270 VDC, 52 kRPM maximum operating speed. The system also provides 17 hp to start the 1400 hp engine. The system consists of an SR machine directly coupled to the gas turbine engine, an inverter converter unit (ICU), and an electronic controller. The system is designed to meet requirements such as power quality per MIL-STD-704E, 30% (9 kW) step loads, 75% constant power loads, operation over a wide speed range, and a -51 degrees C to +125 degrees C environment. The emphasis in the present work is on the design and implementation of the system. The SR S/G system is currently undergoing design assurance tests. Test results are given to validate the system design and performance. System efficiency is about 80% when generating 30 kW. <<ETX>>
Computer generation of correlated non-Gaussian radar clutter

We develop computer simulation procedures which enable us to generate any correlated non-Gaussian radar clutter that can be modeled as a spherically invariant random process (SIRP). In most cases, when the clutter is a correlated non-Gaussian random process, performance of the optimal radar signal processor cannot be evaluated analytically. Therefore, in order to evaluate such processors, there is a need for efficient computer simulation of the clutter. We present two canonical simulation procedures for the generation of correlated non-Gaussian clutter. A new approach for the goodness-of-fit test is proposed in order to assess the performance of the simulation procedure. >
A combined framework for service identification and congestion management

Service identification and congestion management are important functions of the ISO in maintaining system security and reliability. Most approaches in the literature solve the problem sequentially, which may lead to an under or over-estimation of the service requirement and transaction curtailment. A few of them do it iteratively which is quite time consuming. In this paper, a combined framework for service identification and congestion management is proposed. The ideal objective function is to maximize the overall profit of all market participants. Practically, an upper bound cost minimization is suggested and has been applied to identify two of the services, the reactive support and real power loss services, in case of congestion. The service costs plus the congestion cost are minimized. Results show that the proposed approach results in a smaller transaction curtailment. The curtailment also depends on the relative cost of congestion with respect to the cost of services.
Magnetomechanical characterization and unified energy model for the quasistatic behavior of ferromagnetic shape memory Ni–Mn–Ga

This paper presents an overview of the characterization and modeling of single crystal ferromagnetic shape memory Ni–Mn–Ga. A continuum thermodynamics model is presented which describes the magnetomechanical characterization of single crystal Ni–Mn–Ga for the following behavior: (i) sensing effect; (ii) actuation effect; (iii) blocked force (stress generation). The thermodynamic potentials, namely the magnetic Gibbs energy and the Gibbs energy, are obtained from the Helmholtz energy in order to arrive at the set of required independent and dependent variables; the potentials include magnetic energy consisting of Zeeman, magnetostatic and anisotropy components, and mechanical energy consisting of elastic and twinning components. Mechanical dissipation and the microstructure of Ni–Mn–Ga are incorporated in the continuum model through the internal state variables volume fraction, domain fraction, and magnetization rotation angle. The constitutive response of the material is obtained by restricting the process through the second law of thermodynamics. The model requires only seven parameters identified from two simple experiments. Several interesting characteristics of Ni–Mn–Ga are examined in concert with the magnetomechanical characterization.
Challenge to world‐class manufacturing

Deals with the basic requirements for world‐class manufacturing and discusses the role of total productive maintenance (TPM) in helping to achieve world‐class manufacturing. Examines the roles of TPM in TQM and JIT. Finally, impacts of TPM on the culture and structure of the organization are discussed and pitfalls of TPM implementation are dealt with. Provides an in‐depth look at the development of Japanese manufacturing strategy and concludes with the view that the first step to world‐class manufacturing is to implement TPM successfully and to create an active organization.
Coordinated Voltage and Reactive Power Control Strategy with Distributed Generator for Improving the Operational Efficiency

This study proposes a voltage and reactive coordinative control strategy with distributed generator (DG) in a distribution power system. The aim is to determine the optimum dispatch schedules for an on-load tap changer (OLTC), distributed generator settings and all shunt capacitor switching on the load and DG generation profile in a day. The proposed method minimizes the real power losses and improves the voltage profile using squared deviations of bus voltages. The results indicate that the proposed method reduces the real losses and voltage fluctuations and improve receiving power factor. This paper proposes coordinated voltage and reactive power control methods that adjust optimal control values of capacitor banks, OLTC, and the AVR of DGs by using a voltage sensitivity factor (VSF) and dynamic programming (DP) with branch-and-bound (B&B) method. To avoid the computational burden, we try to limit the possible states to 24 stages by using a flexible searching space at each stage. Finally, we will show the effectiveness of the proposed method by using operational cost of real power losses and voltage deviation factor as evaluation index for a whole day in a power system with distributed generators.
Novel approach for the design of two channel perfect reconstruction linear phase FIR filter banks

This correspondence presents a novel approach for the design of two channel perfect reconstruction (PR) linear phase finite-impulse response (FIR) filter banks. A broad class of even and odd filter length PR filter bank cases can be obtained by simply reordering an appropriate cascade form synthesizing the polyphase components of a linear phase FIR filter.
Understanding Consumers’ Perceived Risk during the COVID-19 Threat: A Scenario-Based Experiment

ABSTRACT The COVID-19 outbreak had a substantial effect on the world economy. The hospitality industry is experiencing severe financial strain. There is a need to understand consumer perceptions better to overcome this crisis. This study aims to gain insights into the impact of consumption orientation, trip mode, and hotels’ environmental sustainability decisions on consumers’ perceived risk factors. A 2 (consumption orientation: utilitarian/hedonic) x 2 (trip mode: solo/with family) x 2 (environmental sustainability decision: maintained/abandoned) scenario-based experiment was conducted to explore the main and interaction effects on consumers’ perceived overall, social, time, financial, physical, performance, psychological risk. The study’s findings reveal that during the COVID-19 situation, consumers perceive more risk when consumption orientation is utilitarian, the trip mode is with family, and hotels maintain sustainability practices.
An Orthotopic Model of Uveal Melanoma in Zebrafish Embryo: A Novel Platform for Drug Evaluation

Uveal melanoma is a highly metastatic tumor, representing the most common primary intraocular malignancy in adults. Tumor cell xenografts in zebrafish embryos may provide the opportunity to study in vivo different aspects of the neoplastic disease and its response to therapy. Here, we established an orthotopic model of uveal melanoma in zebrafish by injecting highly metastatic murine B16-BL6 and B16-LS9 melanoma cells, human A375M melanoma cells, and human 92.1 uveal melanoma cells into the eye of zebrafish embryos in the proximity of the developing choroidal vasculature. Immunohistochemical and immunofluorescence analyses showed that melanoma cells proliferate during the first four days after injection and move towards the eye surface. Moreover, bioluminescence analysis of luciferase-expressing human 92.1 uveal melanoma cells allowed the quantitative assessment of the antitumor activity exerted by the canonical chemotherapeutic drugs paclitaxel, panobinostat, and everolimus after their injection into the grafted eye. Altogether, our data demonstrate that the zebrafish embryo eye is a permissive environment for the growth of invasive cutaneous and uveal melanoma cells. In addition, we have established a new luciferase-based in vivo orthotopic model that allows the quantification of human uveal melanoma cells engrafted in the zebrafish embryo eye, and which may represent a suitable tool for the screening of novel drug candidates for uveal melanoma therapy.
Solidity and Blade Number Effects on a Fixed Pitch, 50 W Horizontal Axis Wind Turbine

Experimental studies were conducted on a modified Rutland 500 horizontal axis wind turbine to evaluate numerical implications of solidity and blade number on the aerodynamic performance. Wind tunnel data were acquired on the turbine with flat-plate, constant-chord blade sets and optimum-designed blade sets to compare with theoretical trends, which had indicated that increased solidity and blade number more than conventional 3-bladed designs, would yield larger power coefficients, CP. The data for the flat plate blades demonstrated power coefficient improvements as the range of solidities was increased from 7% to 27%, but did not indicate performance gains for increased blade numbers. It was also observed that larger pitch angles decreased the optimum tip speed ratio range significantly with a small (5% or less) change in maximum CP. The optimum-design 3-bladed rotors produced an increased experimental CP as solidity increased, with reduced tip speed ratio, at the optimum operating point. As blade number was increased at a constant solidity of 10% from 3 to 12 blades, aerodynamic efficiency and power sharply decreased, contrary to the numerical predictions and the flat plate experimental results. Low Reynolds numbers and wind tunnel blockage effects limit these conclusions and a full scale prototype rotor is being constructed to examine the results of the numerical and experimental studies using a side-by-side comparison with a commercially available wind turbine at the Clarkson University wind-turbine test site.
Social networking sites and its relation to social comparison and psychological well-being among medical university students

Background: Social networking sites (SNSs) have become an indispensable part of young adults in India. The content on one's profile and that of others on social media makes social comparison easier among young adults leading to poor mental health and life dissatisfaction. Aims: To assess the relationship between the pattern of SNS use among young adults and depression, anxiety, and social comparison. Materials and Methods: This was a cross-sectional study among medical students done using a questionnaire consisting of pattern of SNS use and scales for social comparison, depression, and anxiety. Results: We collected data from 220 students (mean age 20.44 years). Impression management was associated with higher social comparison, depression, and anxiety scores. Social comparison had a significant correlation between depression and anxiety scores. Conclusion: A complex association exists between duration or time spent on SNS use and psychopathology.
Direct Plasmonic Solar Cell Efficiency Dependence on Spiro-OMeTAD Li-TFSI Content

The proliferation of the internet of things (IoT) and other low-power devices demands the development of energy harvesting solutions to alleviate IoT hardware dependence on single-use batteries, making their deployment more sustainable. The propagation of energy harvesting solutions is strongly associated with technical performance, cost and aesthetics, with the latter often being the driver of adoption. The general abundance of light in the vicinity of IoT devices under their main operation window enables the use of indoor and outdoor photovoltaics as energy harvesters. From those, highly transparent solar cells allow an increased possibility to place a sustainable power source close to the sensors without significant visual appearance. Herein, we report the effect of hole transport layer Li-TFSI dopant content on semi-transparent, direct plasmonic solar cells (DPSC) with a transparency of more than 80% in the 450–800 nm region. The findings revealed that the amount of oxidized spiro-OMeTAD (spiro+TFSI−) significantly modulates the transparency, effective conductance and conditions of device performance, with an optimal performance reached at around 33% relative concentration of Li-TFSI concerning spiro-OMeTAD. The Li-TFSI content did not affect the immediate charge extraction, as revealed by an analysis of electron–phonon lifetime. Hot electrons and holes were injected into the respective layers within 150 fs, suggesting simultaneous injection, as supported by the absence of hysteresis in the I–V curves. The spiro-OMeTAD layer reduces the Au nanoparticles’ reflection/backscattering, which improves the overall cell transparency. The results show that the system can be made highly transparent by precise tuning of the doping level of the spiro-OMeTAD layer with retained plasmonics, large optical cross-sections and the ultrathin nature of the devices.
Storytelling and Teaching English to Young Learners: A Vietnamese case study

Storytelling, which is often promoted as a suitable methodological approach in teaching young learners, has been under-used and under-researched in EFL primary schools. This study introduces a storytelling innovation to put the young learner-oriented approach in practice. The innovation provides a structure to redesign textbook lessons into storytelling lessons in order to offer young learners interactive opportunities to use language in meaningful contexts. The research was conducted in two phases. The first phase employed a qualitative approach to examine the current state of using stories and storytelling in teaching EFL in state primary schools in Vietnam. This phase involved the participation of 21 teachers and groups of Grade 5 students from 18 primary schools. Classroom observations, in-depth interviews with teachers, and group interviews with students were conducted to collect data. The results showed that stories were mainly used to introduce target language items in the presentation stage of the textbook lessons which had a presentation-practice-production structure. The lessons consisted mainly of mechanical practice and, ineffective group work, and afforded learners few opportunities for interactive activities. The second phase was an intervention study to examine the implementation of storytelling innovation lessons. Two teachers and two classes, who participated in Phase 1, joined Phase 2 of the study. One teacher and one class were used as the comparison group while the others employed the innovation for one teaching term. Data were collected from pre-and post-storytelling speaking tests, classroom observations, in-depth interviews with teachers, and group interviews with students. The quantitative findings revealed that at the end of the study the intervention group significantly outperformed the comparison group in their oral language production. The qualitative data showed that the students in the intervention group were highly engaged in storytelling activities as well. A feature contributing to the learners’ engagement was found to be effective cooperation in group work, as the students were afforded opportunities for meaningful interactions. Both the teacher and the students perceived the positive change in their teaching and learning practices. The innovation could transform a mechanical teaching practice to a more interactive and meaningful learning approach. The results indicate the storytelling innovation as a successful model for introducing change into teaching English in primary schools and contributing to an understanding of the implementation of storytelling, the nature of interactions and learning engagement in EFL contexts.
Compact and selective lowpass filter with very wide stopband using tapered compact microstrip resonant cells

A novel microstrip lowpass filter is proposed. It consists of a simple tapered structure using periodical compact microstrip resonant cells. Owing to the introduction of the tapered structure, the proposed lowpass filter has successfully addressed simultaneously the problems of compactness, matching, selectivity, insertion loss and the suppression of spurious frequency bands. A demonstration filter has been designed, fabricated and tested to show the validity of the proposed structure.
Changes in Asphalt Pavement Friction Components and Adjustment of Skid Number for Temperature

The results of a study aimed at investigating the effects of temperature and surface texture on the friction force developed at the tire–pavement interface during skidding are presented. Ten field sites representing a variety of asphalt pavements in the State of Ohio were selected for the study. Five laboratory briquettes made from the same materials used in the construction of the pavements were prepared for each of the sites. Skid resistance measurements were performed on the briquettes using a portable British pendulum tester. The friction force was considered to consist of two parts, namely, the wet adhesion and the hysteresis components. The adhesion and hysteresis components were measured separately using water and liquid hand soap as lubricants. To simulate the changes due to wear and aging of pavements, several cycles of mechanical polishing were conducted and the available contact area after polishing was determined using a digital image processing technique. Tests were conducted at five differen.