Miracle-dz/UniFAR-FTUs huggingface dataset:
A Theoretical Approach for SAR Calculation in Human Head Exposed to RF Signals

The worldwide use of cellular phones has generated public concern about exposure to the microwave radiation associated with these phones. The probable biological effects due to the use of mobile phones can be regarded as a result of energy absorbed by the head that may damage the brain and nervous tissues. This paper discusses the probable health effects of mobile phones radio emissions, and presents a theoretical method to calculate the specific absorption rate (SAR) in human head exposed to the microwaves of frequency range used in GSM-900, and GSM-1800 mobile phones. A mobile phone with a single direction antenna as an electromagnetic fields source positioned near the head is assumed, and a four layers head model is constructed to calculate the penetration depth in human head, to analyze the SAR and heat distribution in head tissues. ضرعتملا ناسنلإا سأ ر يف ةصتمملا ةقاطلا باسحل ةيرظن ةقيرط ةيويدا رلا تا راشلإل
Autonomous path following by fuzzy adaptive curvature-based point selection algorithm for four-wheel-steering car-like mobile robot

Autonomous path following in mobile robots with nonholonomic constraints can be divided into two problems: first, selecting the tracking point, and then designing an appropriate controller to follow the selected point. When selecting tracking point, considering the kinematics of the robot as well as characteristics of the desired path is of considerable importance. For these purposes, a curvature-based point selection algorithm is first proposed for the car-like mobile robot with independent steering mechanisms. Each instant, the proposed algorithm finds a point which enables the robot to be tangent to the path at that specific point. Afterwards, in order to take into consideration characteristics of the path, a fuzzy adaptive curvature-based point selection algorithm is proposed. In this algorithm, in addition to the kinematic constraints, path characteristics are also considered in selecting the tracking point. This gives the robot the ability to show better performance when the path slope changes suddenly, resulting in less overshoot/undershoot around the desired path. The fuzzy adaptive curvature-based point selection algorithm is combined with a controller based on the Takagi–Sugeno fuzzy logic, such that the fuzzy adaptive curvature-based point selection algorithm selects the tracking point, while the Takagi–Sugeno fuzzy logic controller makes the robot follow the selected point. Finally, the fuzzy adaptive curvature-based point selection–Takagi–Sugeno fuzzy logic tracker is implemented on the robot, and the results are compared with a similar path-following algorithm. Obtained results show that for tracking a piecewise linear path, the steering activity and the following root mean square error decrease from 170.74° and 0.37 m for the conventional fuzzy controller to 63.37° and 0.09 m for the fuzzy adaptive curvature-based point selection–Takagi–Sugeno fuzzy logic controller, respectively.
The influence of business schools on the ethical behavior of students: A study from Ghana

ABSTRACT Business schools are key actors in the education of the future managers of corporate bodies. The incessant business scandals and negative environmental impact by businesses across the world are exposing business school shortcomings. To instill the benefits of ethical practices at the individual, corporate, national and global level in the next generation of managers, business schools are being encouraged to purposefully incorporate business ethics education as a key component of responsible management education in their practices. This study examines the influence of business schools on students’ ethical behavior. The study employs structural equation modeling to validate the hypotheses developed from the literature review. Using empirical data from Ghana, the results firstly show that compared to business schools with public ownership, those with private ownership impact more positively on students’ ethical behavior. Secondly, is found that business schools which have an affiliation status with bigger business schools impact positively on students’ ethical behavior. Lastly, the findings show that teaching of business ethics in business schools, whether as a core course or an elective, has no significant effect on the ethical behavior of students. Implications of the findings on responsible management education, policy and practice are suggested.
Analysis of preview and review patterns in undergraduates' e-book logs

The purpose of this study is to investigate the relationship between academic achievement and learning patterns of students using e-book logs. Specifically, we examined patterns of students’ e-book logs before and after the main content learning in class (that is, ‘Preview’ and ‘Review’). Logs were collected from first-year students in an information science course at Kyushu University. To measure preview and review learning, we analyzed data using three types of measurement: Change indicates how many times a student changed e-books over the course of one hour. Duration indicates how many seconds a student access a given e-book for during one Change (i.e., one turn). Page flip indicates how many pages of a given e-book a student flipped through during one Change. To analyze the relationship between academic achievement and preview/review, the students were categorized into six groups according to their scores on midterm and final (term-end) examinations. For preview, students who had consistent good achievement showed higher values for all three measurements than students who showed poor achievement. In contrast, for review, none of the three measurements showed differences among the six groups. These results suggest that preview is more deeply relevant to academic achievement and assessment than review.
Teaching natural science concepts to young children with mobile devices and hands-on activities. A case study

Over the years, researchers and educators have used various forms of ICT to deliver innovative ideas and teach young children. Technologies are always perceived as catalysts which can enliven the process of teaching and learning. The present study presents, an experimental teaching intervention, which seeks to examine whether early childhood children aged five to seven can develop an understanding of the concept of gravity and knowledge about the planets using hands-on activities, as well as smart mobile devices and the programming environment of ScratchJr. The need to use ScratchJr emerged from the lack of developmentally appropriate software suitable for digital creation and programming in preschool education. The results of the study were quite encouraging as the children started developing an understanding of the concept of gravity, and there was an improvement in their existing knowledge of the planets.
Crossed Product of Hopf Algebras

The main properties of the crossed product in the category of Hopf algebras are investigated. Let A and H be two Hopf algebras connected by two morphism of coalgebras ▹: H ⊗ A → A, f: H ⊗ H → A. The crossed product is a new Hopf algebra containing A as a normal Hopf subalgebra. Furthermore, a Hopf algebra E is isomorphic as a Hopf algebra to a crossed product of Hopf algebras if and only if E factorizes through a normal Hopf subalgebra A and a subcoalgebra H such that 1 E ∈ H. The universality of the construction, the existence of integrals, commutativity or involutivity of the crossed product are studied. Looking at the quantum side of the construction we shall give necessary and sufficient conditions for a crossed product to be a coquasitriangular Hopf algebra. In particular, all braided structures on the monoidal category of -comodules are explicitly described in terms of their components. As an example, the braidings on a crossed product between H 4 and k[C 3] are described in detail.
Een nieuw instrument voor sensorische gevoeligheid

Binnen de DSM-5 wordt sensorische gevoeligheid opgenomen als een van de symptomen binnen het domein van repetitief en stereotiep gedrag. In Nederland zijn er geen korte vragenlijsten beschikbaar om sensorische gevoeligheid bij volwassenen met autismespectrumstoornissen (ASS) te onderzoeken. De vraag is of de Vragenlijst voor Sensorische Gevoeligheid (Lever & Geurts, 2012; Minshew & Hobson, 2008) uitkomst biedt. Deze 13 vragen tellende zelfrapportage lijst is bij 63 volwassenen met en 64 volwassenen zonder ASS afgenomen en richt zich zowel op sensorische hyper- als hypogevoeligheid. Er waren significante verschillen in het aantal gerapporteerde sensorische gevoeligheden tussen beide groepen. Er kwamen echter er ook duidelijk individuele verschillen naar voren in de ASS groep. De vragenlijst lijkt een bruikbaar instrument binnen de klinische praktijk. Verder onderzoek naar de psychometrische eigenschappen is echter gewenst.
Medical student depression and its correlates across three international medical schools

BACKGROUND Medical students have high rates of depression, anxiety, and burnout that have been found to affect their empathy, professional behaviors, and performance as a physician. While studies have examined predictors for burnout and depression in the United States (US), no study, to our knowledge, has compared depression in medical students cross-culturally, or has attempted to examine the effect of factors influencing rates including burnout, exercise, stress, unmet mental health needs, and region. AIM To examine rates of depression in three international cohorts of medical students, and determine variables that may explain these differences. METHODS Convenience samples of medical students from three countries (US, China, and a Middle Eastern country whose name remains anonymous per request from the school) were surveyed in this observational study. Using the Patient Health Questionnaire-2 (PHQ-2) and a modified Maslach Burnout Inventory, depression and burnout were examined among medical students from the three cohorts (n = 473). Chi-square test and analysis of variance were used to examine differences in demographics, behavioral, and psychological variables across these three schools to identify potentially confounding descriptive characteristics. Analysis of covariance compared depression and the emotional exhaustion component of burnout identified through Principal Component Analysis across countries. Multiple linear regression was used to analyze the impact of demographic, behavioral, and psychological variables on screening positive for depression. RESULTS Medical students from the Middle Eastern country had the highest rates of positive depression screens (41.1%), defined as a PHQ-2 score of ≥ 3, followed by China (14.1 %), and then the US (3.8%). More students in the Middle Eastern school had unmet mental health needs (50.8%) than at the medical school in China (34.8%) or the school in the US (32.8%) (Pearson chi-square significance < 0.05). Thus, PHQ-2 scores were adjusted for unmet mental health needs; however, the Middle Eastern country continued to have the highest depression. Adjusting for PHQ-2 score, medical students from the US scored the highest on emotional exhaustion (a measure of burnout). Demographic variables did not significantly predict medical student depression; however, lack of exercise, unmet mental health needs, stress, and emotional exhaustion predicted nearly half of depression in these cohorts. In comparison to the US, coming from the Middle Eastern country and China predicted higher levels of depression. CONCLUSION Depression rates differ in three international cohorts of medical students. Measured factors contributed to some observed differences. Identifying site-specific prevention and intervention strategies in medical student mental health is warranted.
Design rules for non-Manhattan shapes

An approach to MEMS Computer Aided Design tools has been to make use of Integrated Circuits CAD suites with specific enhancements for MEMS designs. Extending the IC Design Rule Checkers to non-manhattan shapes is one of these needed enhancements. IF anecdotally used in IC designs, non- manhattan shapes are intensively used in today state of the art MEMS products. High performance gyroscopes and yaw rate sensor made in surface micromachining processes feature spiral springs and torsional combdrives made of toroidal fingers. Applying classical DRCs to these layouts generate thousands of false errors. The errors are false because they do not affect the manufacturability of the device. But because of their number, they prevent the designers from detecting real errors in their layout. Most false errors are generated by rounding floating point vertices' coordinates, translating different data types and snapping points to a grid. This paper presents a new methodology to eliminate false errors generated by the DRC of non-manhattan shapes. This methodology includes adding a tolerance factor to Microsystem design rules with respect to the geometric properties of non-manhattan shapes and the manufacturing grid parameters, closely control the vertices coordinates when automatically generating the non manhattan shapes and control the snapping on the grid. This methodology has been implemented in MEMSCAP Microsystem engineering kits and has been validated for three foundries design rules: BOSCH, SensoNor, and AMS.
Trajectory analysis : bridging algorithms and visualization

• A submitted manuscript is the version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers.
A non-iterative formula for straightening fillings of Young diagrams

Young diagrams are fundamental combinatorial objects in representation theory and algebraic geometry. Many constructions that rely on these objects depend on variations of a straightening process that expresses a filling of a Young diagram as a sum of semistandard tableaux subject to certain relations. This paper solves the long standing open problem of giving a non-iterative formula for straightening a filling. We apply our formula to give a complete generalization of a theorem of Gonciulea and Lakshmibai.
Enhancing Critical Thinking using LCDS-Based Interactive Electronic School Book in Physics

This study aims to describe the effectiveness of interactive BSE utilization as a supplement for blackbody radiation learning in improving student’s critical thinking skills. The methods used were qualitative and quantitative with purposive sampling technique. We applied scientific based learning, where the experimental class used BSE interactive, while the control one used BSE non interactive. The results indicated that the learning used BSE interactive significantly and effectively could improve student's critical thinking skills at the 95% confidence level. Furthermore, there were significant differences in the critical thinking skills improvement between the experimental and control classes at the 95% confidence level with an N-gain value of 0.64 for the class that used interactive BSE and 0.53 for the class that used non-interactive BSE. The effect size value of interactive BSE utilization compared to non-interactive BSE was categorized in a high criteria with a Cohen's value of 1.78. These results were also supported by students' positive responses to interactive BSE utilization. Keywords: LCDS, critical thinking, blackbody radiation, BSE DOI: http://dx.doi. org/10.23960/jpf.v7. n1.201902
Isoclinism in Lie superalgebras

In this paper using the concept of isoclinism, we give the structure of all covers of Lie superalgebras when their Schur multipliers are finite dimensional. Further it has been shown that, each stem extension of a finite dimensional Lie superalgebra is a homomorphic image of a stem cover for it and as a corollary it is concluded that maximal stem extensions of Lie superalgebras are precisely same as the stem covers. Moreover, we have defined stem Lie superalgebra and show that a Lie superalgebra with finite dimensional derived subalgebra and finitely generated central factor is isoclinic to a finite dimensional Lie superalgebra.
User’s guide to viscosity solutions of second order partial differential equations

The notion of viscosity solutions of scalar fully nonlinear partial differential equations of second order provides a framework in which startling comparison and uniqueness theorems, existence theorems, and theorems about continuous dependence may now be proved by very efficient and striking arguments. The range of important applications of these results is enormous. This article is a self-contained exposition of the basic theory of viscosity solutions
Tau Functions and Matrix Integrals

We consider solvable matrix models. We generalize Harish-Chandra-Itzykson-Zuber and certain other integrals (Gross-Witten integral and integrals over complex matrices) using the notion of tau function of matrix argument. In this case one can reduce the matrix integral to the integral over eigenvalues, which in turn is certain tau function. The resulting tau function may be analyzed either by the method of orthogonal polynomials or by the Schur functions expansion method.
Synchronisation and Wavelet Compression for Background Interference Classification in Wireless Environments

Dense wireless deployment environments are increasingly facing Radio Frequency (RF) spectrum congestion and increased levels of interference. Addressing the interference will require a distributed decision-making application on wireless nodes, that characterize the state of the channel with respect to the presence (or not) of interference, allowing the nodes to adopt mitigation strategies. In this thesis, through a study of empirical data, we examine if each node was to separately characterize the state of the channel and then form consensus with other nodes, whether this consensus correctly reflects the similarity of the per-node sensed background interference. Towards this goal we develop a distributed synchronization scheme that reduces the inaccuracy inherent in distributed data sampling in local node clocks. As an alternative to consensus of per-node characterization we also examine the effectiveness of the Discrete Wavelet Transform (DWT) to communicate to other nodes the state of the channel, as sampled by a node, in a compressed, denoised form. Our early results show that wavelet compression of the sampled time series may produce significant data volume savings, to allow the full time series to be communicated e.g. to a cloud infrastructure where large scale planning of spectrum usage can take place.
Occupational injuries of upper extremities among workers in industries of Yazd, Iran (2015-2016)

Article Info Background: Upper extremity injuries can induce disability and lead to lost workdays. Given the importance of occupational injuries as one of the main causes of upper extremity injuries, this study was conducted to evaluate these kinds of injuries with regard to the age of the injured workers, degree of disability and lost workdays in the city of Yazd. Materials and Methods: In this cross-sectional study, 55 workers with occupational upper extremity injuries were recruited during 2015 to 2016 in Yazd. Data recorded in the labor office of Yazd were collected. The characteristics of the injuries were also collected using the Quick DASH questionnaire. Descriptive statistics were used to report the results. Statistical analyses were carried out using SPSS (version 16) software. Results: Mean Quick DASH (disabilities of the Arm, Shoulder and Hand) score was 60 ± 21.3. Lost workdays of more than 6 months were observed in 52.7% of the cases. Conclusion: This study showed a large number of lost workdays and high levels of disability in individuals with occupational upper extremity injuries.
WiMAX spectrum virtualization and network federation

Spectrum management in wireless broadband networks as regards its cost and its efficient usage, has posed a huge challenge for mobile network operators. Traditionally, network operators had exclusive rights to access the band of spectrum allocated to them, but with the high price of spectrum license, it is becoming necessary to find alternative ways to use and access spectrum more efficiently. Resource virtualization is a method which has been extensively adopted in hardware computing for creating abstract versions of physical hardware resources and it has proven to be a powerful technique for customized resource provision and sharing. This idea of resource virtualization is gradually being transferred into the domain of wireless mobile network resource management but the ideas around it are still evolving. Since spectrum is an important wireless network resource, it is imperative to provide an efficient and cost effective means for the resource to be accessed and utilized. Therefore the idea of spectrum virtualization is investigated in this research as a possible solution to this problem. To expand on the notion of spectrum virtualization, this research further explores the idea of network federation. Network Federation involves the interconnection of diverse network components to be operated as a single seamless network. This will enable them share their network resources while the networks are geographically dispersed and managed by different network operators. To fully implement these concepts there is a need for a welldeveloped network framework. This research proposes two novel architectures for spectrum virtualization and network federation using the WiMAX (Worldwide Interoperability for Microwave Exchange) wireless broadband technology. The proposed WiMAX spectrum virtualization architecture introduces a novel entity known as the Virtual Spectrum Hypervisor (VS-Hypervisor). This VSHypervisor bears the responsibility of spectrum management and virtualization within the WiMAX framework. In the implementation of WiMAX network federation, the novel architecture enables the cooperative existence of multiple WiMAX base-stations having virtualization capabilities with overlapping cellular coverage areas for the purpose of sharing