Miracle-dz/UniFAR-FTUs huggingface dataset:
A Study of Active Access-Point Selection Algorithm for Wireless Mesh Network under Practical Conditions

As an inexpensive, scalable, and flexible Internet- access nctwork, a wireless Internet-access mesh network (WIMNET) is composed of multiple access-poants (APs) that arc connected by wireless links. WIMNET can improve the dependability to link or AP failures by allocating APs redundantly in the network field. Because the redundant APs may increase the operational cost and degrade the performance due to increasing radio interferences, only the necessary APs for communications between the hosts and the Internet gateway should be activated in conventional situations. Previously, we have proposed an actzve AP selectzon algorithm to sclect the minimum number of APs to be activated for WININET that has a single Internet gateway ('GW), such that the overall throughput is maximized, under thc assumption that every link has the same constant speed. However, our preliminary experiments for the emerging high-speed IEEE802.lln protocol that should be introduced into WIMNET found that this speed is greatly affected by the link environment such as the distance. Besides, in practical implementations of large-scale WIMNET, multiple GWs are usually necessary to increase the capacity of Internet connections, and the number of hops between a GW and a host should be limited. Furthermore, the minimum throughput should be provided to a host as QoS (Quality of Service) when it is exclusively connected with the GW. In this thesis, we first present the extension of the active AP selection algorithm to select active APs under practical conditions of link speed changes, multiple GWs, the hop count limitation, and QoS constraints. We also extend the routing algorithm used in the activc AP selection algorithm procedure and the WIMNET simulator for throughput €valuations. we verify the eEectiveness of the extended active AP selection algorithm through extensive simulations using the extended WIMNET simulator. Then, we present link speed measurement results when fiansmission Control Protocol (TCP) is adopted with IEEE 802.11ac devices from three vendors. In our measurements, we adopt different conditions for network fields such as AP locations, link distances, one or two-hop communications, wall existences, and repeater existences. Then, the experimental results show that TCP throughputs are greatly affected by vendors, communication conditions and physical conditions. In future studies, we will study the proper assignment of the minimurn link speed parameter that is critical for the active AP minimization and the overall throughput maximization, thc proper handling of dynamic traffic changes, the further algorithm extension to different hop limitations, and the systern implementation for real networks.
Product Mix Changes and Performance in Chilean Plants

A recent theoretical literature on multiproduct firms has given relevance to the study of the relationship between product mix changes and firm productivity. In this article, taking advantage of a unique data set for manufacturing plants in Chile available for the period 1996–2003, we use matching techniques and a difference-in-difference approach to estimate the causal impact of product mix changes on productivity and other plant-specific outcomes. Our results suggest a positive impact of product mix changes on total factor productivity and labor productivity 2 years after the product mix changes were introduced. We also find positive effects on employment and sales. Nevertheless, this positive effect is mainly driven by those firms that add and drop products at the same time. Our results are in line with recent theoretical developments on productivity determinants for multiproduct firms and illustrate how product creation and destruction are a source of within-firm productivity growth.
The Water Drop Lens: Revisiting the Past to Shape the Future

This vision paper provides a brief overview on recent developments related to a new solution of quasi-optical beamformer, referred to as the water drop lens. This parallel plate waveguide beamformer, which is a revisited geodesic lens with a shaped profile, is attracting attention for applications in the millimetre-wave range, where more conventional dielectric lenses prove to be too lossy and standard geodesic lenses are still too bulky. On-going investigations include satellite and terrestrial communication systems, radar systems and imaging systems with wideband operation at centre frequencies ranging from about 20 GHz to over 120 GHz.
Adopting Automated Essay Scoring Feedback In Malaysia: A Review Of The Literature

Assessing essays and providing feedback to learners is undoubtedly a daunting, time consuming task for language teachers especially for formative assessment. Formative assessment requires feedbacks that indicate learning gaps that inform ideas for further improvement. Although providing high quality feedback is important, teachers are often in dilemma to beat the deadline and hold accountable to huge class size despite the need for iterative and frequent practice. The laboriousness of essay marking often limits the occurrence of essay writing in classroom. A possible solution is to make use of an Automated Essay Scorer (AES) system that could score and generate feedback immediately. The purpose of this paper is to review on the importance of feedback and the feasibility of adopting an automated mechanism to help Malaysian English teachers to mark essays and provide feedbacks instantly. Features of good feedback, commercially available AES, reasons in favour of automated feedback based on the Malaysian context and some limitations of the system are examined. Our findings suggest that relevant and effective automated feedback mechanism can be possible through home-grown AES supplemented with properly phrased feedbacks. It can lead to self-regulated learning that empowers them for sustainable development. It is a laborious but attainable task with the cooperation and supports all parties. Hence, introducing Automated Essay Scoring Feedback (AESF), a home-grown AES is a feasible and highly anticipated tool for the Malaysian classroom.
Six‐way power divider for series feed using H‐plane T‐junctions

This article presents a six‐way series power divider that consists of a series of H‐plane T‐junctions. A design methodology for controlling a dividing power ratio with optimum design of irises and septum is also proposed, and formulas for determining the power ratio of each T‐junction are introduced. Moreover, design equations have been developed for an H‐plane T‐junction operating at normalized frequency of 1.3745 (λ = 105 mm) by using a curve‐fitting approach. The return loss of the designed power divider is −36.3 dB and the insertion loss is about 0.3 dB at operating frequency. The maximum magnitude and phase variation at output ports are 0.4 dB and 2.8°, respectively. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1622–1626, 2016
Biodiversity Conservation: A Preventive Tool for Epidemics and Pandemics

Accepted: 18 Nov. 2021 Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services highlights that there is a close nexus between the global health pandemics and the biodiversity. The COVID-19 pandemic has clearly indicated the importance of environmental health. Seeing the advancement of scientific field, it is clear that there is some link between the biodiversity and spread of outbreaks of epidemics and pandemics. Interestingly, preservation of biodiversity has been recognized as an important step to control the disease outbreaks since last one year. If biodiversity is well managed and conserved, it will act as a barrier against the spill-over of infectious diseases.
Trajectory Tracking Control of an Autonomous Ground Vehicle

This thesis proposes a solution to the problem of making an autonomous nonholonomic ground vehicle track a special trajectory while following a reference velocity profile. The proposed strategies have been analyzed, simulated and eventually implemented and verified in Alice, Team Caltech's contribution to the 2007 DARPA Urban Challenge competition for autonomous vehicles. The system architecture of Alice is reviewed. A kinematic vehicle model is derived. Lateral and longitudinal controllers are proposed and analyzed, with emphasis on the nonlinear state feedback lateral controller. Relevant implementation aspects and contingency management is discussed. Finally, results from simulation and field tests are presented and discussed.
Regulatory proteins in placental angiogenesis

The vasculature of the placenta plays a crucial role during the course of pregnancy in order to maintain the growing need of the fetus. Abnormal placental structure and function significantly increase the risk of stillbirth. Various growth factors and cytokines play an important role in the vasculogenesis and angiogenesis of placenta. These processes are stimulated by various pro-angiogenic factors. The activities of these factors are also stimulated by hypoxia. In some of the physiological phenomenon like ovulation, embryogenesis as well as in wound healing intense blood vessel growth can be seen similar to that seen in placenta. Therefore, factors that induce and maintain placental vascular growth and function are of considerable developmental and clinical significance. The total arterial architecture may also depend upon the pro-angiogenic factors. Hormones and other growth factors are other contributors of this vasculogenesis and angiogenesis. Any dysfunction of factors can lead to foetal hypoxia and related complications. This review describes the major growth factors and their significant role in vasculogenesis and angiogenesis of placenta.
Business Design and Feasibility of Humblezing Store Branch Establishment in South Jakarta

Humblezing is a clothing line business that sells clothing products such as outerwear, shirts, jackets, pants, and bag with the concept of modern adventure wear. Humblezing sells online and offline with the first store in Bandung. Based on Humblezing's online sales data shows that DKI Jakarta is in the second position with the highest percentage of online sales after West Java. The purpose of this research is to find out if Humblezing established an offline store branch in South Jakarta is feasible or not to run. The feasibility measurement pay attention to market aspects, technical aspects and financial aspects which will be projected for 5 years. The tools that used in this research are Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period (PBP), Sensitivity Analysis and Risk Analysis. Based on the results of the feasibility analysis, shows that the establishing a Humblezing offline store branch is feasible to run with NPV value is IDR 185,343,832, IRR 38%, PBP for 3.81 years with a MARR value is 11,25%. Sensitivity measurements on the increase in product costs sensitive at 9.31%, increase in labor costs at 14.07%, decrease in selling prices at 3.19% and decrease in market demand at 2.33%. Furthermore, the estimated accumulated risk of establishing a Humblezing offline store branch is 5.50%.
Application of Bayesian networks in the risk decision of mining investment

Aiming at dynamic character that the risk factors changed with the updating information in the process of assessing mining investment risk,this paper analyzed the disadvantages of the traditional methods,introduced the Bayesian networks method.The basic concept and properties of Bayesian networks was discussed.This paper also combined the risk decision theory with the Bayesian networks and used the combination in the mining investment risk decision analysis.This paper also built up the risk decision model in the field of mining investment based on Bayesian networks.At last,we used a example to demonstrate the efficient of this method,which provided a new idea for decision analyst of mining investment
Balance Assessment in Children with Down Syndrome Who Practice Dance

Background. It is observed that dance delivers a valuable contribution to the development of bodily motor functions. Objectives. To evaluate the static and dynamic balance in children with Down syndrome DS enrolled in a Dance Workshop for people with disabilities. Methods. Balance tests proposed by Oliveira (2009) were used on 14 children with DS aged between 8 and 12 (mean 9.36 ± 1.2 years.). Who has been practicing dance for not less than two years? A Control Group was formed with 14 children with DS who do not dance with the same age group (mean 9.43 ± 1.09 years). Results. While the maximum effect of the proposed tests is 12 points and 42.08% of the sample obtained a score below 5. It is considered relevant the percentage of 57.13% of the participants to have scored five, six, or seven. It can be stated that dance proved too significant a considerable means of stimulating balance development in children with DS. It was considering the results regarding the CG that pointed to 42.25% of the sample with a score of zero and 57.25% with a rating of 4, 3, or 2. Conclusion. The constant and systematic dance practice can present a considerable development in the balance of children with DS. This favors their inclusion and permanence in physical exercise and sports programs.
The valuable use of Microsoft Kinect™ sensor 3D kinematic in the rehabilitation process in basketball

Subjects who practice sports either as professionals or amateurs, have a high incidence of knee injuries. There are a few publications that show studies from a kinematic point of view of lateral-structure-knee injuries, including meniscal (meniscal tears or chondral injury), without anterior cruciate ligament rupture. The use of standard motion capture systems for measuring outdoors sport is hard to implement due to many operative reasons. Recently released, the Microsoft Kinect™ is a sensor that was developed to track movements for gaming purposes and has seen an increased use in clinical applications. The fact that this device is a simple and portable tool allows the acquisition of data of sport common movements in the field. The development and testing of a set of protocols for 3D kinematic measurement using the Microsoft Kinect™ system is presented in this paper. The 3D kinematic evaluation algorithms were developed from information available and with the use of Microsoft’s Software Development Kit 1.8 (SDK). Along with this, an algorithm for calculating the lower limb joints angles was implemented. Thirty healthy adult volunteers were measured, using five different recording protocols for sport characteristic gestures which involve high knee injury risk in athletes.
Novel methods for elucidating modality importance in multimodal electrophysiology classifiers

Multimodal classification is increasingly common in biomedical informatics studies. Many such studies use deep learning classifiers with raw data, which makes explainability difficult. As such, only a few studies have applied explainability methods, and new methods are needed. In this study, we propose sleep stage classification as a testbed for method development and train a convolutional neural network with electroencephalogram (EEG), electrooculogram, and electromyogram data. We then present a global approach that is uniquely adapted for electrophysiology analysis. We further present two local approaches that can identify subject-level differences in explanations that would be obscured by global methods and that can provide insight into the effects of clinical and demographic variables upon the patterns learned by the classifier. We find that EEG is globally the most important modality for all sleep stages, except non-rapid eye movement stage 1 and that local subject-level differences in importance arise. We further show that sex, followed by medication and age had significant effects upon the patterns learned by the classifier. Our novel methods enhance explainability for the growing field of multimodal classification, provide avenues for the advancement of personalized medicine, and yield novel insights into the effects of demographic and clinical variables upon classifiers.
Biocatalytic and Biological Activities of Cassia Occidentalis Mediated Silver Nanoparticles

Silver nanoparticles (AgNPs) were synthesized using the leaf extracts from Cassia occidentalis. The reactions were marked by a distinct colour change and the formation of AgNPs was monitored by measuring the UV-Vis spectra. The morphology and crystalline phase of the metal nanoparticles were determined using Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray analysis (EDX) and Fourier-Transform-Infrared Spectroscopy (FTIR). The biocatalytic activity of the AgNPs against nitrifying compounds was determined using 4-nitrophenol and 4-nitroalanine. The biological screening involved analyzing the AgNPs effectiveness against gram-negative and gram-positive bacteria (Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bacillus cereus and Enterococcus faecalis). The AgNPs displayed minimal inhibition at low concentrations ranging from 25 to 50 μg/mL. The toxicity of the AgNPs was tested using the brine shrimp assay and was observed as non-toxic with a nearly zero mortality rate. The AgNPs exhibited an antioxidant potential of 70.90 % inhibition at 1000 µg/mL. C. occidentalis is noted as a potential bioresource for synthesizing AgNPs with applications as antibacterial, antioxidant and biocatalytic agents. HIGHLIGHTS The addition of Ag nanoparticles to C. occidentalis plant extracts resulted in the formation of AgNPs-C. occidentalis complexes The AgNPs-C. occidentalis complexes were characterized using Transmission Electron Microscopy, Scanning Electron Microscopy with EDX, UV-Vis spectrophotometry and IR spectroscopy These AgNPs-C. occidentalis complexes were very stable and showed antibacterial activity against a range of tested gram-positive and gram-negative bacteria at low doses, thus proving to be good antimicrobial agents The AgNPs-C. occidentalis complexes showed higher scavenging activity than leaf extracts of C. occidentalis. The AgNPs have increased catalytic ability for the reduction of 4-nitrophenol and 4-nitroalanine after a 30 min time interval GRAPHICAL ABSTRACT
Chatbot: Virtual Counsellor Using Speech Emotion Recognition System

An individual usually stops disclosing deeply to other people because of the fears of bad judgement. They are concerned about being judged, rejected or burdening the listener, thus preventing potential benefits. Some students struggle with embarrassment and shame about topics that need to be discussed to keep to themselves. Technology involvements, such as chatbot, have been designed to help with these problems, such as stress, anxiety, and depression. Thus, this study proposed developing a mobile application with chatbot implementation for students to improve and manage their mental health. Using the Speech Emotion Recognition system, the Virtual Counsellor was developed using Android Studio and Visual Studio Microsoft and implemented a chatbot using Watson Assistant API. The result showed positive feedback from the testing participant. However, some of the features need to be enhanced, including creating mood analysis for the chatbot.
Study on the Perfection of Confidential Aviation Safety Reporting System in China

In view of the short operational time and the bad operational effect of confidential aviation safety reporting system in China, a deep study on confidential aviation safety reporting system both home and abroad is made from the operation of confidential aviation safety reporting system, functional design of the system platform and information process and analysis. Shortcomings and problems on the aspects of system design, system operation, information disposal and analysis, information promulgation and utilization are pointed out. Key problems are elaborated such as how to coordinate conflicts between the neutral operational organization and the system operational principles, how to strengthen human-based design of the system platform, how to enhance the information analysis effect, how to perfect the utilization mechanism of information issue and how to enhance the information degree of utilization. Finally, some practical improvement suggestions about how to perfect confidential aviation safety reporting system in China are presented.
PREDICTABILITY OF PERSONALITY DIMENSIONS ON PERCEIVED STRESS AND COPING STYLES AMONG MIZO COLLEGE STUDENTS

Personality has been believed to affect the way individuals perceive stress and how they cope with it. This paper reports the predictability of personality on perceived stress and coping styles among two hundred and forty Mizo students (120 extraverts and 120 neurotics), who were screened out using Maudsley Personality Inventory. Incorporating a between-subjects design, it was hypothesized that significant correlations among the measures as well as predictability of personality on the behavioral measures would be established. Contrary to previous researches, results failed to evince any significant gender effects on the measures. Extraversion is significantly and negatively related to neuroticism, perceived stress, emotion-oriented coping, and avoidance-oriented coping. Neuroticism is significantly and negatively related to stress, but positively and significantly related to task-oriented coping and emotion-oriented coping. Moreover, personality is found to significantly predict perceived stress and coping styles. Findings corroborate the link between personality, stress and coping styles and thus substantiate the already established connotation of the variables on the sampled Mizo population.
Wi-Fi Effects on Human Health: Review

Wi-Fi findings show that Wi-Fi causes cell death, prostate / scrotal damage, neurocognitive consequences include improvements in the EEG, biliary tree, and cellular DNA harm, differences in endocrine and calcium surtax. Every one of these affects is often caused by interactions to other EMFs with only a mwave frequencies that are each reported in 10 to 16 studies. Subsequently, each one of these 7 EMF symptoms were established results with Wi-Fi and other EMFs of mwave frequencies. The downward results of the key stimulation of such EMFs, the VGCC calcium stream, are also given for all of these 7. Even though VGCC is apparently the influential EMF known mechanism through an EMF communication with both the VGCC voltage sensor, other systems have smaller parts. Essential tasks include activating several voltage-gated ion streams, calcium cyclotron vibration and magnetic receiving system. Of the noninvasive EMF results five attributes are addressed. Pulsed EMFs were also, in the majority of circumstances, more effective unlike – antipulsed EMFs, synthetic EMFs polarized and sometimes more energetic unlike non-polarized EMFs; Docer reaction curves are complex and non-monotonous; EMF responses are sometimes measurable; and EMFs can have a greater influence on child then adult individuals. Furthermore, 7 Wi-Fi signs are commonly observed and even other associated exposures to EMFs were shown. Every one of the seven must therefore be considered to have demonstrated wireless internet effects.