Miracle-dz/UniFAR-FTUs huggingface dataset:
Perceptions Of Covid 19 Survivors: Prevention and Transmission Education Virus in Era New Normal

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is a new type of coronavirus that causes disorders of the respiratory system, acute pneumonia, and can lead to death. This community service is intended to provide understanding and knowledge about the prevention and transmission of COVID-19 to the wider community. This health education webinar community service activity is carried out online via Zoom. The material presented was about preventing and transmitting the virus during a pandemic according to the perception of COVID-19 survivors. Prior to the implementation of the educational webinar, participants were asked to register as well as fill out a questionnaire to measure the level of knowledge about preventing the transmission of COVID-19 (pre-test). Then at the end of the meeting, participants were asked to fill out the attendance list, and then fill out the questionnaire again (post-test). The results of the educational activity questionnaire showed that there was a good change in the level of knowledge between before and after being given educational materials with an average pre-test score of 63.84 and a post-test of 91.53 from 13 participants. So it can be concluded that this education can confirm audiovisually which can change the level of knowledge for the better.
A Quad-Antenna System Operating at the 2.4/5.2/5.8 GHz WLAN Bands for Laptop Computers

In this paper, a quad-antenna system for laptop computers is studied. Because two dual- antenna systems can construct a quad-antenna system, the dual-antenna systems in the open literature are utilized. The mutual coupling between the two dual-antenna systems is analyzed and reduced. To validate the design of a quad-antenna system, the quad-antenna system, consisting of two dual- antenna systems proposed in the open literature and a decoupling element, is fabricated and tested. Its measured i10dB impedance bandwidths are 200MHz (2.33{2.52GHz) and 1.62GHz (4.5{6.12GHz). The measured mutual couplings are below i15:5/i19dB at the 2.4- and 5.2/5.8-GHz WLAN bands, respectively. The measured gains are better than 2.4/3.9dBi with e-ciencies higher than 70%/72% at the two bands, respectively. The envelop correlation coe-cient is evaluated based on the measured results.
Fear of Becoming Infected and Fear of Doing the Wrong Thing – Cross-Cultural Adaptation and Further Validation of the Multidimensional Assessment of COVID-19-Related Fears (MAC-RF)

Background With the COVID-19 infection speeding around the world, many experience fear and anxiety. To detect those at risk of psychopathology and provide treatment, valid instruments are needed. The aim of this study was to cross-culturally validate the theory-based instrument Multidimensional Assessment of COVID-19-Related Fears (MAC-RF) in Croatian and to further examine the scale’s validity by exploring its relationship with relevant constructs. Method A total of 477 participants completed an online survey during a rapid rise in new daily COVID-19 cases in Croatia and while new restrictions were being imposed. Results MAC-RF had a stronger association with health anxiety, cyberchondria, and anxiety sensitivity compared to depression, attesting to its convergent and divergent validity. However, a 2-factor structure was revealed in this sample: Fear of infection and Fear of using an inadequate strategy in dealing with pandemic. Fear of infection had a stronger association with health anxiety and COVID-19 anxiety and was a better predictor of COVID-19 related protective health behaviors. Fear of choosing an inadequate strategy had a stronger association with cyberchondria, fear of consequences of the epidemic on mental health, as well as financial consequences, and loss of civil liberties. Conclusion Fear of infection captures negative emotional states due to feared consequences on personal somatic health and the health of loved ones, while Fear of choosing an inadequate strategy in dealing with the pandemic reflects a metacognitive aspect. Treatments may have to target both aspects of COVID-19 related fear.
A Community in Quarantine: The Social Worlds of Alternative Theater During the Pandemic

The article describes the functioning of alternative theater community during the COVID-19 pandemic. The theoretical framework of analysis is determined by the social worlds theory, allowing us to capture the processual nature of reconstructing the social world of alternative theater in the era of COVID-19. We explore the ways in which independent theater is coping with the threat to its practice, understood as a tool for building a community “here and now,” i.e. its main technology, values, and the primary activity that organizes communication within the social worlds of alternative theater. We take into account changes brought on by the pandemic (the inability to build relationships via direct interaction with audience members/participants) and the constant, everyday experiences of people working in alternative theater (their ability to function in a crisis). Our analysis is based on empirical data collected in the course of socio-anthropological studies into: (1) the working conditions of Polish theater workers during the pandemic, carried out by the Zbigniew Raszewski Theater Institute in Warsaw; and (2) the modus operandi of the Wegajty Theater from the perspective of its participants’ experiences.
Reflection analysis of FDTD boundary conditions. II. Berenger's PML absorbing layers

For pt. I see ibid., vol. 45, no. 8, Aug. 1997. This paper presents an in-depth analysis of Berenger's perfectly matched layer (PML) boundary truncation technique. The impedance and dispersion relationships for the fields within the PML media are derived to gain a better understanding of the nature of field propagation within such regions. The mechanisms which contribute toward reflection from a PML region are then described. Using this knowledge of the PML absorbing layers, a numerical method is developed, which allows the reflection from such layers to be calculated exactly.
Roughness Assessment for Machined Surfaces in Turning Operation Using Neural Network

Feed forward artificial neural network has been applied to predict the quality of turned surfaces for two types of coated carbide inserts. Four networks were proposed for each insert. The networks have been trained and tested using a former experimental data. The input data, represented by cutting parameter values, and output data, represented by surface roughness, were fed into the network model. Each network has three layers adopted for prediction. The first one is the input layer which involves cutting parameters: cutting speed, feed rate, and depth of cut; the second layer is hidden layer consisting of two hidden layers. The third layer of the network is the output layer which gives the surface roughness value. Levenberg - Marquardt algorithm is used in the back-propagation algorithm to train these networks. The best result was obtained for networks which have (12) neurons in the first hidden layer and (9) neurons in the second hidden layer. These networks had given R =0.9902 and mean square error = 0.0033 for the first insert, whereas, for the second insert, R =0.9892 and mean square error = 0.0023. These networks were used to predict the optimum cutting parameters which give minimum surface roughness.
The Role of Supply Chain Integration and Agile Practices in Improving Lead Time During the COVID-19 Crisis

Long lead time is hurting the competitiveness of the supply chain, while the shorter is considered to be better in order to add value to the customer and to improve the supply dependability. Supply chain integration increases the coordination and shortens the processes. Agile practices also enable the supply chain to be more responsive to market variability. The aim of this research is to investigate the impact of supply chain integration and agile practices on lead-time reduction at Dubai HealthCare City. An empirical survey has been conducted in which the data were retrieved from 150 respondents and then analyzed using SPSS to examine the model. The result also showed a positive relationship between supply chain integration and lead-time reduction. Meanwhile, results indicated a positive relationship between agile practices on lead-time reduction. The study recommends promoting companies’ capabilities through flexibility and information sharing to achieve supply chain integration and agile practices such as responsiveness and alertness.
Rejection Sensitivity on Social Networking Sites: How It Differently Impacts Late Adolescents’ Positive and Negative Affect

Rejection sensitivity online was prevalent among adolescents that was potential risk factor for affect. The purpose of the study was to examine the relationship between rejection sensitivity on networking sites and sentimental responses through self-assesion and self-esteem respectively and the sequential mediated effect both of them, the research also tested the moderated role of gender. There were 823 adolescents included in this research. They completed a questionnaire packages consisting of 4 scales. The findings indicated that adolescents’ emotional responses to rejection sensitivity on networking sites was significant, the mediating model was remarkable through self-assesion and significant sequential mediated effect both of self-assesion and self-esteem for affect among girls but not boys, however, rejection sensitivity on social networking sites was directly related to negative affect among boys, gender played a moderating role in the relationship between rejection sensitivity on social networking sites and positive affect/negative affect respectively, boys were sensitive to negative affect but girls were sensitive to both of positive and negative affect and boys responsed to stimulus slightly than girls. The findings provided a new insight to the prevention and intervention for the negative affect and improvement for positive affect among adolescents. The implication of the conclusions for understanding and counteracting rejection sensitivity on networking sites were discussed.
Class-E, Class-C, and Class-F power amplifiers based upon a finite number of harmonics

Class-E operation at UHF and microwave frequencies is achieved by using transmission-line networks to provide the drain harmonic impedances of an ideal class-E power amplifier (PA). This paper develops a technique for analysis of such amplifiers that are based upon a finite number of harmonics. The technique is generally applicable to classes E, C, and F as well as PAs with harmonic reactances not corresponding to those of established classes. The analysis shows that the maximum achievable efficiency depends not upon the class of operation, but upon the number of harmonics employed. For any set of harmonic reactances, the same maximum efficiency can be achieved by proper adjustment of the waveforms and the fundamental-frequency load reactance. The power-output capability depends upon the harmonic reactances and is maximum for class F.
An attention mechanism-based multi-scale network crowd density estimation algorithm

— It is becoming more and more important to calculate the people number in terms of the requirement for the safety management, because that the crowd gathering scenes are common whether or not it is daily urban traffic or some special gatherings. Calculating the people number in high-density crowd is a very difficult challenge due to the diversity of ways people appear in crowded scenes. This paper proposes a multi-branch network which combines the dilated convolution and attention mechanism. By combining dilated convolution, the context information of different scales of the crowd image are extracted. The attention mechanism is introduced to make the network pay more attention to the position of the head of the crowd and suppress the background noise, so as to obtain a higher quality density map. Then add all the pixels in the density map to get the total people number. Through a large number of experiments, this network can better provide effective crowd density estimation features and improve the dissimilarity of density map distribution, which has stronger robustness.
English Negative Polarity Item Any Acquisition by Indonesian Speaking Learners of English

This study conducted an approximate replication of Marsden, Whong, & Gil's (2018) ‘What’s in the Textbook and What’s in the Mind: Polarity Item Any in Learner English’. Forty Indonesian speaking learners of English knowledge of English Negative Polarity Item any was investigated and the results were compared with the results of the original study (ibid.) including the additional study conducted by the same authors (Gil et al., 2017). The purpose of this study is to provide a replicated and extended study to the reliability of the original study by investigating different populations and comparing their performance with the performance of the population in the original study as well as by adding an additional language item some to be tested in a Truth Value Judgment Task (TVJT). This study focused on English NPI any and how Indonesian speaker learners of English acquire its properties when the properties were both taught and not taught. The results confirmed the original study with an additional finding that there was no correlation between the learners’ knowledge of any with their knowledge of some. Therefore, it is suggested that the existing instruction of the use of any should no longer be contrasted with some, but presented in a more meaningful context.
Providing practitioners with techniques for cognitive work analysis

Contributing to the advancement of cognitive ergonomics, both as a scientific discipline and as a field of professional activity, is a major challenge for the future of ergonomics. It is to advance this objective that I want to make my contribution: while cognitive ergonomics has undoubtedly become established as a scientific discipline, it is still only applied in an approximate fashion by consultant ergonomists in their day-to-day work of analysing and improving socio-technical systems. The cognitive analysis of work is still too close to a research activity rather than a practice. Beyond the protected frontiers of university laboratories and research departments of large corporations, cognitive engineering often draws more on intuition derived from operators' cognitive activities than from the results of rigorous methodological approaches. This hampers the expansion of cognitive ergonomics as a vehicle for transforming socio-technical systems. Developing practical means of applying cognitive ergonomics within the context of operation on the ground is, thus, a challenge to be met, if this scientific discipline is to contribute fully to the improvement of working systems on a daily basis.
Broadband spectrum surveys in Denver, CO, San Diego, CA, and Los Angeles, CA: methodology, analysis, and comparative results

The Institute for Telecommunication Sciences (ITS) has performed a set of automated, broadband measurement surveys of spectrum usage in several metropolitan areas in the United States across the frequency range 108 MHz to 19.7 GHz. The methodology, hardware and software used to conduct the surveys are described. The survey results are broken down into separate categories for mobile, point-to-point and radiolocation bands. In mobile bands, maximum, minimum and average levels of usage during the survey periods are measured. Relatively light usage by terrestrial point-to-point microwave systems is observed. Broadband occupancy at relatively levels is shown for radar systems in the radiolocation bands.
Desiccant-Based Combined Systems: Integrated Active Desiccant Rooftop Hybrid System Development and Testing Final Report- Phase 4

This report summarizes the results of a research and development (RD Fischer 2000; and Fischer and Sand 2004. All initial design objectives established for this development program were successfully achieved. The performance flexibility desired was accomplished by a down-sized active desiccant wheel that processes only a portion of the supply airflow, which is pre-conditioned by a novel vapor compression cycle. Variable-speed compressors are used to deliver the capacity control required by a system handling a high percentage of outdoor air. An integrated direct digital control system allows for control capabilities not generally offered by conventional packaged rooftop systems. A 3000-cfm prototype system was constructed and tested in the SEMCO engineering test laboratory in Columbia, MO, and was found to operate in an energy-efficient fashion relative to more conventional systems. Most important, the system offered the capability to independently control the supply air temperature and humidity content to provide individual sensible and latent loads required by an occupied space without over-cooling and reheating air. The product was developed using a housing construction similar to that of a conventional packaged rooftop unit. The resulting integrated active desiccant rooftop (IADR) is similar in size to a currently available conventional rooftop unit sized to provide an equivalent total cooling capacity. Unlike a conventional rooftop unit, the IADR can be operated as a dedicated outdoor air system processing 100% outdoor air, as well as a total conditioning system capable of handling any ratio of return air to outdoor air. As part of this R&D program, a detailed investigation compared the first cost and operating cost of the IADR with costs for a conventional packaged approach for an office building located in Jefferson City, MO. The results of this comparison suggest that the IADR approach, once commercialized, could be cost-competitive with existing technology--exhibiting a one-year to two-year payback period--while simultaneously offering improved humidity control, indoor air quality, and energy efficiency.
Effects of ramp slope on usability when a wheelchair is propelled by attendant

Many wheelchair users are accompanied by an attendant, but most prior studies did not consider this fact. This study investigated effects of ramp slope on wheelchair velocity and subjective discomfort considering both the wheelchair occupant and the attendant while ascending with the occupant facing forward, descending with the occupant facing forward, and descending with the occupant facing backward. Forty (20 male, 20 female) participants were dividing into four groups: male – male (attendant – occupant), male – female, female – male, female – female. To evaluate the usability of the ramp, analysis considered the four levels of user group and five levels of the ramp slope (1:6, 1:8, 1:10, 1:12 and 1:14) as independent variables, and mean wheelchair velocity, attendants’ physical discomfort, and occupants’ psychological anxiety as dependent variables. Considering the opinions of both the attendant and the occupant, 1:12 was recommended as the appropriate ramp slope. Furthermore, when descending a ramp, the occupant should be able to look forward.
High frequency bandwidth polarization and strain control using a fractional derivative inverse model

The present paper proposes an inverse dynamical model based on fractional derivatives in order to simulate the electrical field versus the polarization field E(P) as well as the electrical field versus the mechanical strain E(S) of ferroelectric hysteresis. By considering a fractional derivative term, the frequency bandwidth of the inverse model is greatly increased. As a consequence, the model became suited for the usual inverse model applications, such as adaptive inverse control of piezoelectric actuators, high-speed positioning or high precision positioning. The proposed high-accuracy inverse model rendered it possible to avoid standard feedback mechanisms that usually exhibit restrain frequency bandwidths due mainly to high frequency noise. Starting from a quasi-static inverse model, and based on a simple mechanism related to the dry-friction concept, a polarization fractional derivative term was added in order to take into account the dynamical effects. The order of the fractional derivative was, using a direct model P(E) and experimental data on a large frequency bandwidth (10 − 3 Hz < f < 102 Hz), found to be equal to 0.5. A quadratic relation was used to link the ferroelectric strain and the polarization field. Moreover, a dynamical strain control based on an inverse dynamic polarization field contribution was proposed. Experimental procedures were developed to verify the accuracy of the polarization as well as of the strain control. Good results were obtained and exposed for sinus and triangular polarization-imposed waveforms. Various frequencies and amplitudes were tested in both cases.
Common cathode VCSEL driver in 90 nm CMOS enabling 25 Gbit/s optical connection using 14 Gbit/s 850 nm VCSEL

The design and electro-optical measurements of a 25 Gbit/s common cathode vertical cavity surface-emitting laser (VCSEL) driver in 90 nm bulk CMOS technology is presented. The driver is bonded to a 14 Gbit/s commercial VCSEL providing both DC and modulation current to the laser. The power consumption including the VCSEL is 60 mW. Since the DC bias of the VCSEL exceeds the breakdown voltage of thin oxide transistors, a novel output stage configuration using isolated wells is proposed. The active area is only 127 × 50 μm.
Use of Digital Cameras for Pavement Surface Distress Survey

The categorization and quantification of the type, severity, and extent of surface distress is a primary method for assessing the condition of highway pavements. Several methodologies are reviewed that were developed to automate pavement distress surveys. Existing available applications of automated pavement surface distress surveys rely on analog video technology, which poses several limitations on the performance of the systems. Through the use of new digital, high-performance cameras, high-definition images of pavement surfaces were acquired. These images were directly captured, archived, and analyzed by microcomputers. Two types of digital cameras were used in the research: area scan and line scan. Research revealed that high-performance area scan cameras may have advantages over line scan cameras. However, line scan cameras based on the technique of time delayed integration have good potential when tight synchronization and correct timing control are fully integrated into the system. The imaging subsystem of a full digital highway data vehicle that has been developed at the University of Arkansas is also discussed.
Authentic activity as a model for Web-based learning

There has been a renewed interest in the role of authentic activities within courses as constructivist philosophy and advances in technology influence instructional design in higher education. This paper proposes ten characteristics of authentic activities, based on a substantial body of educational theory and research, which can assist teachers in designing more engaging and effective web-based learning environments. The paper presents the preliminary results of an in-depth investigation of two web-based courses using the aforementioned characteristics as an analytical framework. Preliminary analysis of the data generally supports the design of web-based courses around authentic activities.
Automatic synthesis algorithms for supervisory controllers

Describes the authors' experience with a prototype system capable of synthesizing supervisor controller programs based largely on the theory of discrete event systems (DES) first proposed by Ramadge and Wonham (1987). The authors augment the theory by also allowing continuous time trajectories modeling transitions between events. The authors illustrate their approach by an example, the discrete control of a walking machine, which poses some challenges on the applicability of the theory and finally, discuss some possible solutions. <<ETX>>