bluuebunny/crossref_metadata_2025 huggingface dataset:
Using Communication Boundaries to Minimize Athlete Social Media Distractions During Events
Authors: Hayes Michelle , Filo Kevin , Riot Caroline , Geurin Andrea N.
Published: February 2021

Sport organizations regulate athletes’ use of social media for many reasons including the protection of the organization’s reputation. Several strategies have been introduced to minimize issues related to the negative consequences athlete social media use may present, yet whether these strategies also work to address social media distractions experienced by athletes during major sport events is not well known. Utilizing communication privacy management (CPM) theory, the purpose of the current research was to examine the aspects of social media that sport administrators perceive to be distracting to athletes and what support and management mechanisms are utilized to address such concerns during major sport events. Semi-structured interviews (N = 7) with Australian national sport organizations (NSOs) administrators were conducted. Sport administrators reported several aspects of social media that are perceived to distract athletes including personal and performance criticism and a fixation with social media profiles. Social media could also be used to manage athlete temperament. As a result, organizations highlighted both proactive and reactive communication boundaries and mechanisms that could be used to address concerns including content restrictions, best practice case studies, engaging in conversations, and monitoring. Opportunities for sport practitioners are described including conducting consultation sessions with athletes to better understand their needs regarding their social media use.
Evaluation of Katara Cultural Village Events And Services: a Visitors' Perspective
Authors: Al-Sulaiti Khalid Ibrahim , Abaalzamat Khalid Hamad , Khawaldah Hamzah , Alzboun Nidal
Published: February 2021

Perceived value is understood to be a precursor of visitor satisfaction and loyalty and it is impacted by product quality. The relations between quality, value, and satisfaction have been gaining increasing attention in the marketing and tourism fields. Accordingly, this study examines
visitors' evaluations of Katara Cultural Village events and services and their satisfaction. To achieve this aim, a questionnaire was conducted and distributed to 532 visitors in Katara. Results showed that Katara was a successful tourism destination in Doha, which attracts large numbers of
visitors with different demographic characteristics. According to respondents, Katara has several social, economic, and environmental impacts, which are mainly positive. The social impacts of Katara seemed to be most noticeable because cultural events and activities represent the core of Katara's
model. As mentioned, results showed a high level of visitors' satisfaction with Katara's events and services, with an overall assessment score of 78.6% and 71.3%, respectively. Additionally, the results from one-way ANOVA and t tests revealed that there are no significant differences
in visitors' assessment of Katara's events and services between demographic groups in terms of gender, nationality, and age. However, these results contribute to the understanding of event attendee behavior, providing researchers, practitioners, and policy makers in Katara with insights into
how to effectively design and manage events.
Inhomogeneous Analysis of Novel Model of CFAR Approaches to Detect Two-Degrees of Freedom Partially-Correlated χ2-Targets
Authors: El-Mashade Mohamed Bakry
Published: February 2021

Reliable and high performance radar systems have ubiquitous demand. The operation of such systems is affected by the presence of natural and artificial noise sources. One of the basic radar concepts is to decide whether the target is present or not. Meanwhile, the general objective of all radar detection schemes is to ensure that false alarms don't fluctuate randomly. Thus, to cope with an inhomogeneous changing clutter environment, it is beneficial to be able to detect both high- and low-fidelity targets while maintaining the rate of false alarm fixed. This calls for an adaptive thresholding strategy that vary the detection threshold as a function of the sensed environment, and most modern radars implement this approach automatically. The feature of constant false alarm rate (CFAR) activates the threshold in such a way that it becomes adaptive to the local clutter environment. Many alternatives have been proposed to achieve such demanded property. Owing to the diversity of the radar search environment (target multiplicity & clutter edges), there exists no universal CFAR procedure. This prompts the necessity to investigate the composite architecture as a novel strategy. The goal of this paper is to analyze the fusion of CA, OS, and TM processors in post-detection integration of M-pulses. The primary and outlying targets are assumed to obey χ 2 -distribution with two-degrees of freedom in their fluctuation. Closed-form expression is derived for the detection performance. Our simulation results show robust behavior of the new model in the absence as well as in the presence of outlying targets. In addition, a significant improvement of the detection performance of novel strategy over the individual CFAR detectors is noticed. Moreover, the outweighing, over Neyman-Pearson (N-P) detector, of the fusion model, in ideal background, is evidently demonstrated. This ability to obtain improved performance compared to existing models is the major contribution of this work.
Hubungan Lama Menderita Dengan Kebutuhan Spiritual Pasien HIV-AIDS
Authors: Ahmad Ikhlasul Amal  , Mohammad Arifin Noor
Published: February 2021

ABSTRAK

Latar Belakang: Pada orang yang memeiliki penyakit kronis yang salah satunya adalah HIV, kemaknaan tentang kebutuhan spiritual tersebut juga dapat berdampak terhadap kelanjutan menjalankan terapi atau pengobatan yang lama. Perawat memiliki andil dalam memenuhi kebutuhan spiritual pada pasien dengan penyakit kronis tersebut. Lamanya pasien HIV yang mendapatkan Kebutuhan spiritual menjadi salah satu bagian yang penting untuk dipenuhi selama menjadi ODHA guna mendapatkan solusi dari masalah hidup. Studi ini memiliki tujuan untuk mengidentifikasi korelasi antara lama menderita dengan kebutuhan spiritual pasien HIV-AIDS.

Metode: Desain penelitian ini menggunakan rancangan cross sectional dengan melibatkan 51 sampel. Analisis data menggunakan Uji Spearman.

Hasil: Dominasi responden menurut jenis kelamin adalah laki-laki (58,8%), pendidikan terakhir SMA (49,0%) dan Agama Islam (96,1%). Analisis bivariate variabel lama terdiagnosis dengan kebutuhan spiritual ditemukan p-value sebesar 0,025 (p<0,05).

Kesimpulan: Terdapat hubungan yang bermakna antara lama menderita dengan kebutuhan spiritual pasien HIV-AIDS, dengan tingkat keeratan lemah. Hal ini dapat berarti bahwa semakin lama menderita maka kebutuhan spiritual juga semakin meningkat.

Kata Kunci       : HIV-AIDS, Lama Menderita, Kebutuhan Spiritual
El reconocimiento de validez oficial de las epistemologías del sur, en el contexto colonial dominante
Authors: García Rangel Fabiola
Published: February 2021

La teoría de las Epistemologías del Sur, propuesta por el sociólogo portugués Boaventura de Sousa Santos, es el marco conceptual explicativo en este trabajo, desde las luchas epistemológicas que los gestores educativos realizan en México para la obtención de validez oficial de nuevos programas educativos de nivel superior. Mediante la traducción intercultural, es posible el encuentro de intersecciones conceptuales que comuniquen las propuestas del Sur epistemológico con el Norte (colonial, patriarcal y capitalista); así como la complementación de los saberes para una verdadera diversidad cultural.
Studying the Rheological Properties of a Polylactide Melt Mixed with Wood Filler
Authors:   Kazan National Research Technological University, Sabirova Gul’naz A. , Safin Ruslan R. , Galyavetdinov Nour R. , Shaikhutdinova Aigul R. , Khayrullin Ruslan Z.
Published: February 2021

Composite materials based on wood filler are promising materials that are actively conquering the market. This is due to the advantages of using these materials in various fields: weather resistance and environmental compatibility, easy machining and possibility of recycling. Furthermore, it is sustainable use of wastes of timber sawing and furniture and woodworking industries, as well as low-grade wood. Wood powder is also known to be one of the components of consumables used in additive 3D printing technologies. Over the last decade, the commercial use of 3D printers has increased rapidly due to the fact that it allows creating prototype objects of complex shape based on a computer model. Experimental studies were carried out to determine the tensile strength and rheological properties of a composite made of polylactide 4043D, untreated wood powder brand 140 and wood powder thermally modified at 200 and 240 °C. The composite is intended for creation of three-dimensional objects by extrusion using a 3D printer. It was found that with an increase in the amount of filler in the composite, the tensile strength decreases. Also, samples with thermally modified filler show an increase in tensile strength in comparison with samples with untreated filler. Prototypes of 3D threads with different composition were obtained, during the study of which the melt flow index was examined. It was found that with increasing temperature of wood filler treatment the melt flow index increases. With a lower content of wood powder in the melt composition, there is a 2-fold increase in the melt flow index. The knowing of the rheological properties of the resulting compositions will allow achieving maximum performance and reduction of energy and production costs.
Radial Growth of Scots Pine (Pinus sylvestris L.) under Inhibition
Authors:   Bryansk State Engineering and Technology University, Ivanov Valery P. , Marchenko Sergey I. , Nartov Dmitry I. , Balukhta Leonid P.
Published: February 2021

Predicting tree growth processes is important due to the exceptional ecosystem role of forests, which carry out global climate regulation by sequestrating carbon, conserving drinking water, and providing habitat for living organisms. Trees are known to respond to any fluctuations in the environment. The research purpose is to identify weather and climatic factors that significantly affect the inhibition of growth of Scots pine (Pinus sylvestris L.) in conditions of constant moisture deficit. The studies were carried out in the eastern part of the Bryansk region within the territory the Bryansk administrative district, in the educational and experimental forestry of the Bryansk State Engineering and Technological University and the Styazhnovskoye forest district. Methods of dendrochronology were used to assess the response of 93 pine trees to fluctuations in the external environment by changing the width of annual rings (available anatomical feature of a tree) using indices of radial growth. An original approach was proposed to analyze the reasons for a sharp decline in the annual radial growth under the influence of temperature and precipitation. The years with abnormally low increments (1963, 1972, 1985, 2002 and 2010) were identified against the background of the weather-climatic situation for 5 years before and after the fall in growth. Similar dynamics of absolute values of radial increments and their indices was established, which is caused by fluctuations of natural factors, manifestation of hereditary traits, etc. Significant differences were revealed between the growth rates at average multiyear values of January, May and August air temperatures with growth rates in the years of abnormally low radial growth, which are observed in pine against the background of colder January and warmer May and August of the current year, as well as under the condition of warmer January of the previous year. At the same time, no significant role of precipitation was detected. The obtained data, expanding the idea of the features of growth processes and formation of annual increments in diameter of Scots pine in the conditions of changing climate at the turn of the 20th–21st centuries, allowed us to suggest a possible manifestation of physiological features of the species, the homeostasis optimum zone of which is located in the conditions of colder boreal climate. This information expands our understanding of the features of growth processes and formation of annual increments in diameter of Scots pine in changing climatic conditions.
Calorific Value of Pine Wood in Crops of the Northern Taiga Forest Area
Authors:   Northern (Arctic) Federal University named after M.V. Lomonosov, Tyukavina Olga N. , Klevtsov Denis N. , Adaj D.M. ,   Northern (Arctic) Federal University named after M.V. Lomonosov,   Takoradi Technical University
Published: February 2021

Calorific value of plants is an important characteristic for evaluation of material cycles and energy conversion in forest ecosystems, as well as a qualitative characteristic of plant raw materials as fuel. Wood biofuel is increasingly used in the production of thermal energy, in this regard, it is important to study the calorific value of wood, as well as the conditions for growing high-quality raw materials. The research purpose is to identify the dependence of the calorific value of pine wood in crops on its macroscopic structure, the assimilation apparatus characteristics, density and height of the stand. Small, medium, and large not damaged model trees without pathologies were selected on temporary sample plots. Cores from which were taken with an increment borer at a height of 1.3 m to measure radial growth on the semi-automatic complex Lintab-6 with an accuracy of ±0.01 mm. The calorific value of pine wood was determined in an absolutely dry state using an automated bomb calorimeter ABK-1V. To study the influence of the assimilating apparatus on the wood calorific value, needles of all ages were selected from the middle branch of the model tree crown. Cross sections were prepared from the middle part of a needle using a sledge microtome MS-2. Histological elements of a needle were measured by the Axio Scope.A1 microscope using the IMAGE-PRO INSIGHT 8.0 software. The average heat capacity of pine wood in heath-lichen pine forests is (20 731±133) J/g; in cowberry pine forests – (20 618±141) J/g; in bilberry pine forests – (20 513±104) J/g at a stand density from 1160 to 3806 pcs/ha. The highest pine wood heat capacity is found in heath-lichen pine forests with the density of stand 5021 pcs/ha. The increased pine wood heat capacity in pine forests with high stand density is due to a reduction in the number of needles on the branch (r = –0.75) and an increase in the diameter of resin channels (r = – 0.88). The influence of the average stand height and the annual layer structure on the calorific value of pine wood was found.
Concentration of Certain Trace Elements in the Soils of Dagestan Lowlands and Its Medical and Ecological Significance
Authors:   Dagestan State Medical University, Ibnumaskhudova Patimat M. , Kazanbieva Patimat D. , Magomedova Umiyat A. , Abdurazakova Khadizhat N. , Surkhaeva Zarema Z. , Ibragimova Sevdet S.
Published: February 2021

Neurological and endocrine diseases, being widespread and producing significant impact on peopleʼs health as well as increasing the risk of disability of the working population (thus burdening the state budget), remain a most important medical and economic problem today. The study aimed to establish a link between these pathologies and the content of trace elements (cobalt, copper, zinc and manganese) in the soils of Dagestan plains. The concentration of active forms of cobalt, copper, zinc and manganese in the soil was established using the atomic absorption spectrophotometer model 170-70 (Hitachi, Japan) at the Biogeochemistry Laboratory of the Caspian Institute of Biological Resources, Dagestan Federal Research Centre, Russian Academy of Sciences. To determine the morbidity rate in the population, we turned to the data of the Ministry of Health of the Republic of Dagestan. The study revealed that the relevant pathologies in Dagestanʼs population, leading to disability, are caused by the trace element composition of the soil. Having compared the data on the content of cobalt, copper, zinc and manganese in the soils of the republicʼs lowland districts (Kizilyurt, Khasavyurt, Babayurt) and the prevalence of endocrine and neurological pathologies, we found a high correlation. The number of patients was in direct proportion to the content of manganese and in inverse proportion to the content of cobalt, copper and zinc. However, in Kizlyar District endocrine pathologies only correlated with zinc in the soil, which, apparently, can be explained by the local diet, fish products playing an important role, and by the fact that the territory is often flooded with coastal waters, changing the elementsʼ concentration in the soil.
Bats of the Prespa Basin in northern Greece: acoustic survey, new records and relationships to light pollution (Chiroptera)
Authors: Uhrin Marcel , Balogová Monika , Uhrinová Romana , Vargová Viktória
Published: February 2021

The bat survey in the Greek part of the Prespa basin in 2018–2020 confirmed, despite the limited methods used, its extraordinary importance for bat diversity. The study documented the presence of 22 bat forms (20 species) by acoustic surveys and a favourable status of some roosts including several nursery colonies. Three of the recorded species are here reported for the first time, Eptesicus nilssonii (the first record for Greece), Nyctalus lasiopterus, and Barbastella barbastellus, however, confirmation by a capture or direct observation of an individual is still needed. The collected data showed that bats do not avoid the urbanized parts of the study area and underlined the importance of old houses, churches, and ruins providing suitable roosting and foraging opportunities. The measurements of light pollution in villages revealed a high amount of light diffusion caused by the used type of shieldless luminaires. Heat maps of light intensity revealed a slightly higher bat activity in almost all villages in 2020, upon the situation in 2018. Bat passes were recorded not only in the peripheries of the highest illumination zones but also inside them, although some of the bat passes may belong to bats flying enough in the dark above the light levels of the installed lamps. The study provides application of mitigation actions for the Municipality of Prespa with the main aim to reduce the current level of the ALAN (Artificial Light At Night).
EMOTIONAL REJECTION OF A CHILD IN THE FAMILY AS A FACTOR CONTRIBUTING TO THE FORMATION OF GENERAL PERSONAL DISEASE AND BEING A PSYCHOLOGICAL BACKGROUND TO CRIMINAL BEHAVIOR
Authors: Корепанова Юлия Николаевна
Published: February 2021

Социальное отчуждение - одна из серьезных проблем современности, способствующая формированию деструктивной модели поведения, затрагивающей важнейшие сферы жизни человека: здоровье, социализацию, духовность и др. Одна из возможных причин данного явления - искаженный процесс воспитания ребенка в условиях травмирующей эмоциональной депривации, влекущей за собой существенное искажение его личности и жизни в целом. Статья посвящена анализу феномена материнской «нелюбви». Рассмотрены возможные последствия такого отношения в виде эмоциональных расстройств и формирования негативных поведенческих установок. Показана роль эмоционального отвержения ребенка в механизме криминализации личности. Указаны современные тенденции, усугубляющие проблему личностной отчужденности, имеющие существенные психологические и социальные последствия. Акцентируется внимание на необходимости усиления духовной составляющей молодого поколения, психолого-педагогической и социальной культуры потенциальных родителей. Отмечается важность перестройки описанных неблагоприятных тенденций в вопросах воспитания, опасных как для личного благополучия ребенка, так и благополучия общественного.

Social exclusion is one of the serious problems of our time, contributing to the formation of a destructive model of behavior that affects the most important areas of human life: health, socialization, spirituality, etc. One of the possible reasons for this phenomenon is the distorted process of raising a child in conditions of traumatic emotional deprivation, which entails a significant distortion of his personality and life in general. The article is devoted to the analysis of the phenomenon of maternal «dislike». Possible consequences of such attitude in the form of emotional disorders and formation of negative behavioral attitudes are considered. The role of emotional rejection of the child in the mechanism of criminalization of personality is shown. Current trends are indicated, exacerbating the problem of personal alienation, with significant psychological and social consequences. Attention is focused on the need to strengthen the spiritual component of the younger generation, the psychological, pedagogical and social culture of potential parents. The importance of restructuring the described adverse trends in upbringing, which are dangerous both for the personal well-being of the child and for the well-being of the community, is noted.
You won’t believe what this guy is doing with the potato: The ObjAct stimulus-set depicting human actions on congruent and incongruent objects
Authors: Shir Yarden , Abudarham Naphtali , Mudrik Liad
Published: February 2021

Perception famously involves both bottom-up and top-down processes. The latter are influenced by our previous knowledge and expectations about the world. In recent years, many studies have focused on the role of expectations in perception in general, and in object processing in particular. Yet studying this question is not an easy feat, requiring—among other things—the creation and validation of appropriate stimuli. Here, we introduce the ObjAct stimulus-set of free-to-use, highly controlled real-life scenes, on which critical objects are pasted. All scenes depict human agents performing an action with an object that is either congruent or incongruent with the action. The focus on human actions yields highly constraining contexts, strengthening congruency effects. The stimuli were analyzed for low-level properties, using the SHINE toolbox to control for luminance and contrast, and using a deep convolutional neural network to mimic V1 processing and potentially discover other low-level factors that might differ between congruent and incongruent scenes. Two online validation studies (N = 500) were also conducted to assess the congruency manipulation and collect additional ratings of our images (e.g., arousal, likeability, visual complexity). We also provide full descriptions of the online sources from which all images were taken, as well as verbal descriptions of their content. Taken together, this extensive validation and characterization procedure makes the ObjAct stimulus-set highly informative and easy to use for future researchers in multiple fields, from object and scene processing, through top-down contextual effects, to the study of actions.
Chiral Isothiourea-Catalyzed Kinetic Resolution of 4-Hydroxy[2.2]paracyclophane
Authors: Weinzierl David , Waser Mario
Published: February 2021

We herein report a method for the kinetic resolution of racemic 4-hydroxy[2.2]paracyclophane by means of an chiral isothiourea-catalyzed acylation with isobutyric anhydride. This protocol allows for a reasonable synthetically useful s-factor of 20 and provides a novel entry to obtain this interesting planar chiral motive in an enantioenriched manner.
PERBANDINGAN METODE ALTMAN Z-SCORE, BENEISH M-SCORE-DATA MINING DAN SPRINGATE DALAM MENDETEKSI FRAUDULENT FINANCIAL REPORTING (Studi Empiris Perusahaan Manufaktur Tahun 2014-2018)
Authors: Putra Yudi Partama
Published: February 2021

Yudi Partama Putra. This study is based on the number of fraud cases that occur both domestically and abroad. Financial reporting fraud that occurs within the company is a major concern throughout the world. This study aims to investigate whether there are significant differences between the Altman Z-score, the beneish m-score - data mining, and springate methods in detecting fraudulent financial reporting. This is quantitative research, and the data used are secondary data. The population of this study is Manufacturing companies listed on the Indonesia Stock Exchange in 2014-2018. Sample is selected by using purposive sampling method so that there are 26 companies to be the samples. The analysis technique of this study is Regression Analysis on Partial Least Square using SmartPLS. The results of this study indicate that altman z-score and springate have a positive and significant effect on fraudulent financial reporting, while the beneish m-score-data mining has no effect on the fraudulent financial reporting. However, of the three methods, the Altman Z-score method is more influential in detecting the fraudulent financial reporting than the Springate method.

Keywords:      Altman Z-Score, Beneish M-Score - Data Mining, Springate, Fraudulent Financial Reporting
HUBUNGAN EKUITAS MEREK (BRAND EQUITY) DENGAN LOYALITAS PELANGGAN PADA PT. ENSEVAL PUTERA MEGATRADING TBK CABANG BENGKULU
Authors: Radansyah Sadad , Indriasari Nia , Wagini Wagini
Published: February 2021

Sadad Radansyah, Nia Indriasari, The purpose of this study was to determine the correlation between brand equity with customer loyalty at Enseval Putera Megatrading Tbk Company BengkuluBranch. The analytical method used is Spearman’s rank correlation and hypothesis testing.

Based on the Spearman correlation analysis of the correlation between brand equity with customer loyalty at Enseval Putera Megatrading Tbk Company Bengkulu Branchobtained the value of rho ( )the correlation between brand equity with customer loyalty at Enseval Putera Megatrading Tbk Company Bengkulu Branchis 0.841 at the interval of the correlation interpretation of 0.800-1,000, with very strong criteria, meaning the correlation between brand equity with customer loyalty at Enseval Putera Megatrading Tbk Company Bengkulu Branchis very strong. To test the hypothesis between brand equity and customer loyalty at Enseval Putera Megatrading Tbk Company Bengkulu Branchis obtained a calculated rho value greater than rho table (0.841> 0.364) so ​​that Ho is rejected and Ha is accepted, meaning that there is a significant correlation between brand equity and customer loyalty at Enseval Putera Megatrading Tbk Company Bengkulu Branch.  

Key Words: Liquidity,
PENGARUH MODUL ASUHAN PERSALINAN KALA III DENGAN METODE PRECEPTORSHIP TERHADAP PENINGKATAN KETERAMPILAN MAHASISWA DIII KEBIDANAN
Authors: HILINTI  YATRI , SULASTRI MEPI , PUTRI YESI
Published: February 2021

Pendahuluan: suatu bahan ajar yang dibuat untuk dapat digunakan oleh mahasiswa dalam proses belajar mandiri disebut dengan modul. Keterampilan mahasiswa yang rendah akan berpengaruh pada kualitas lulusan, salah satunya pada keterampilan dalam memberikan asuhan persalinan kala III. Penelitian ini bertujuan untuk  menganalisis adanya pengaruh modul asuhan persalinan kala III terhadap keterampilan mahasiswa DIII Kebidanan. Metode: Desain penelitian yang digunakan yaitu quasy eksperiment dengan menggunakan rancangan pre-posttest design, Besaran sampel dalam penelitian ini yaitu 94 orang mahasiswa semester IIIAKBID Pelamonia Kesdam VII Wirabuana Makassar dilakukan sejak bulan November hingga Desember 2019. Keterampilan diukur sebanyak 2 kali yaitu sebelum dan setelah dilakukan pembelajaran praktikum dengan metode demonstrasi sebanyak 3 kali pertemuan selama 2x60 menit/pertemuan. Setiap pertemuan diberikan selang waktu selama 7 hari untuk pertemuan selanjutnya. Data yang didapatkan tersebut kemudian dianalisis menggunakan Uji chi square dan Mann-Whitney Hasil dan Pembahasan: hasil yang didapatkan adalah terbitnya modul asuhan persalinan kala III sebagai panduan bagi mahasiswa DIII Kebidanan. Dari hasil analisis didapatkan pembelajaran pada kelompok modul asuhan persalinan kala III lebih baik meningkatkan keterampilan saat memberikan asuhan bayi baru lahir, melakukan manajemen aktif kala III dan melakukan pemantauan perdarahan. Peningkatan keterampilan kelompok modul dengan metode demonstrasi yaitu 52,1%, 60,4%, 43,7%. Kesimpulan: Modul Asuhan Persalinan kala III lebih baik dalam membantu meningkatkan keterampilan mahasiswa melakukan asuhan persalinan kala III dibandingkan dengan kelompok pembelajaran tanpa menggunakan modul.
Videoaulas no contexto de alunos PROEJA
Authors: Argüelles Lupi Marcia Estela , Da Silveira Alves Rozane
Published: February 2021

Este trabalho traz um recorte da pesquisa de Mestrado em Educação Matemática da Universidade Federal de Pelotas (UFPel) na linha de Tecnologias e Educação Matemática. O estudo investigou como a utilização de videoaulas com conteúdos de Matemática pode contribuir na aprendizagem de alunos da Educação de Jovens e Adultos (EJA) de uma turma do PROEJA de um Instituto Federal no município de Pelotas, RS. O trabalho foi norteado por uma abordagem qualitativa do tipo pesquisa-ação. A coleta de dados foi realizada por meio de questionário e entrevistas semiestruturadas com os sujeitos da pesquisa. Foi utilizada a Análise de Conteúdo de Bardin (2016) para examinar os dados coletados e deles emergiram quatro categorias: a reflexão da professora sobre a utilização das videoaulas; a realização profissional da professora de ensinar na EJA; os relatos dos alunos sobre suas experiências escolares e a opinião dos alunos do PROEJA sobre a utilização das videoaulas.

Palavras-chave: Videoaulas. Prática docente. EJA.
Multi-Objective Power Distribution Network Reconfiguration using Chaotic Fractional Particle Swarm Optimization
Authors: Mousavi Yashar , Atazadegan Mohammad Hosein , Mousavi Arash
Published: February 2021

Optimization of power distribution system reconfiguration is addressed as a multi-objective problem, which considers the system losses along with other objectives, and provides a viable solution for improvement of technical and economic aspects of distribution systems. A multi-objective chaotic fractional particle swarm optimization customized for power distribution network reconfiguration has been applied to reduce active power loss, improve the voltage profile, and increase the load balance in the system through deterministic and stochastic structures. In order to consider the prediction error of active and reactive loads in the network, it is assumed that the load behaviour follows the normal distribution function. An attempt is made to consider the load forecasting error on the network to reach the optimal point for the network in accordance with the reality. The efficiency and feasibility of the proposed method is studied through standard IEEE 33-bus and 69-bus systems. In comparison with other methods, the proposed method demonstrated superior performance by reducing the voltage deviation and power losses. It also achieved better load balancing.
Study of RSS-Based Indoor Positioning System for Target Using Visible Light Communication
Authors: Chaabna Ameur , Babouri Abdesselam , Zhang Xun , Boulsina Fayçal , Hafsi Takoua
Published: February 2021

An optical wireless positioning system that uses white light-emitting diodes (LEDs) based on Visible Light Communication (VLC) is presented in this paper. In the proposed system, four LEDs are employed for illumination and communication. The trilateration technique is used for determining the receiver's location and the practical Received Signal Strength (RSS) measurements are used for distance estimation. The impact of ambient light on Signal-to-Noise-Ratio (SNR) is studied by taking into consideration the first-order light reflection off of the ceiling, floor, and walls for channel modeling with both direct and indirect sunlight exposure. A modeling equation from the RSS measurements is proposed. The results show that the illuminance in all of the places in the room can be satisfied. Furthermore, the average positioning error by adopting the derived equation and trilateration technique was an error of less than 3 cm.
Dual Current Loop Control for a Third-Order Passive Damped Filter Based Quasi-Z-Source Inverter
Authors: Yadav Arvind , Deolia Vinay Kumar , Agrawal Sanjay
Published: February 2021

An Impedance Source Inverter (ZSI) offers a solution to low output renewable energy sources, because it provides an unconventional high boost. The interaction of Quasi-Z-Source (qZS) inverter with the load side raises stability concerns. Multiple resonant features need attention when grid is connected. In this paper, the resonant feature of a third order filter based on a qZS inverter is explored, and DC and AC sides dynamic characteristics are analyzed for optimum size selection of passive components. Coupled response of a qZS inverter and the AC side filter is presented. For input variation, a closed loop control is established to take care of stability and the multiple resonant feature. A voltage loop and a dual current loop are used for DC and AC side dynamics respectively. Controllers are designed to mitigate input side disturbance. Results are provided for two design cases (case I, II), the need for damping is highlighted, and measured results validate the design and control methodology.
Investigation of the chemical composition of turnip treated with sodium selenite by atomic absorption spectroscopy
Authors:   Russian Timiryazev State Agrarian  University, Eliseeva Olga V. , Eliseev Alexander F. ,   Russian Timiryazev State Agrarian  University, Belopukhov Sergey L. ,   Russian Timiryazev State Agrarian  University
Published: February 2021

The paper presents data on the study of the chemical composition of Petrovskaya turnip variety when using non-root treatment of vegetating plants with a selenium-containing solution. Treatment of plants was carried out with a solution of sodium selenite with a concentration of 0.0005 and 0.001% by Se. The experiment was carried out according to the following scheme: 1) NPK (background) – control variant; 2) NPK + NRT Se 0.0005%; 3) NPK + NRT Se 0.001%. As a background macro fertiliser, nitroammophosca was added to the soil at the rate of 30 g/m2. In the background options the treatment of plants was carried out with distilled water. The content of selenium in turnip roots was determined by atomic absorption spectroscopy. It is shown that when treated with a solution of sodium selenite, the selenium content in the product part of plants in the variant of NPK + Se 0.0005% increased by 1.5 times, and in the variant of NPK + Se 0.001% – by 1.8 times compared to the control variant. It was found that non-root treatment of vegetating plants with selenium-containing solution led to a decrease in the content of dry matter in turnip roots by 1.5-1.6%, and the content of dry soluble substances remained at the level of the control variant. At the concentration of selenium in the 0.0005% solution, the content of ascorbic acid in root crops decreased by 7%, and the content of nitrates increased by 10.1% relative to the control variant. An increase in the concentration of selenium in the 0.001% solution led to a decrease in the content of ascorbic acid in root crops by 15.9% and an increase in the content of nitrates in them by 20.6% compared to the control variant.
Total oxidation of decahydroxypillar[5]arene with copper(II) and iron(III) nitrates
Authors:   Kazan Federal University, Gorbachuk Vladimir V. , Marysheva Anna R. ,   Kazan Federal University, Stoykov Ivan I. ,   Kazan Federal University
Published: February 2021

Pillar[n]arenes are suitable synthetic platforms for synthesis of functionalized p-cyclophanes, versatile building blocks for creating supramolecular polymers and (pseudo)rotaxanes. The presence of hydroquinone fragments in unsubstituted pillar[n]arene derivatives opens wide opportunities for their application in electrochemical sensors and for their use as reducing agents for synthesis of hybrid materials. Macrocyclic cavity plays the key role in molecular recognition, supramolecular self-assembly of pillararenes, and therefore possibility of switching electron donor properties of aromatic moieties, forming macrocyclic cavity presents specific interest. Synthesis of pillar[n]quinones is non-trivial goal, usually, it requires expensive reagents (сerium(IV) ammonium nitrate). As an oxidized compound alkoxy-derivatives of pillararenes are used. While possibility of red-ox transitions of decahydroxypillar[5]arene are well known, to the date in literature there are no examples of total oxidation of decahydroxypillar[5]arene. We have studied interaction of decahydroxy-pillar[5]arene with a row of inorganic oxidants: catalytic oxidation with air oxygen in presence of copper(II) and iron(III) nitrates, and oxidation with ammonium persulfate. In order to find the optimal conditions for oxidation of pillar[5]arene the series of solvents were tried (proton donor alcohols and acetic acid, proton acceptor dimethylformamide and dimethylsulfoxide). It was established that using glacial acetic acid as a solvent with ultrasonication leads to total oxidation of pillar[5]arene to pillar[5]quinone. This fact is explained by strong proton-donor properties of glacial acetic acid, to prevent formation of insoluble quinhydrone complexes of pillar[5]arene oxidation products. Using ammonium persulfate does not lead to the product of total oxidation.
Oxidative stress and antioxidant enzymes in triticale shoots under chloride salinization
Authors:   Tula State Lev Tolstoy Pedagogical University, Ivanishchev Viktor V.
Published: February 2021

We studied alterations in oxidative stress indicators (hydrogen peroxide, superoxide radical, lipid peroxidation – LPO) and alterations in the activity of antioxidant enzymes (catalase, ascorbate peroxidase, guaiacol peroxidase, glutathione reductase) in triticale shoots (Triticosecale) during short-term (0-96 h) sodium chloride stress (120 mM) with statistical methods: principal component analysis (PCA) and cluster analysis. Analysis of alterations in the activity of enzymes with the PCA method does not allow them to be unambiguously included in a single group, despite the fact that they all belong to antioxidant enzymes. The inclusion of oxidative stress indicators in this analysis did not make the picture simpler. Using the cluster analysis method, it can be concluded that under conditions of short-term chloride stress in the shoots of triticale, much more catalase (than other enzymes studied) is associated with the protection of membranes from lipid peroxidation than with the utilization of hydrogen peroxide. This is also reflected by the highest correlation coefficients: catalase – LPO (0.94), catalase – hydrogen peroxide (0.79). The formation of primary clusters between ascorbate peroxidase and glutathione reductase reflect the significance of the association of the ascorbate – glutathione cycle with the processes of utilization of reactive oxygen species (primarily hydrogen peroxide) under experimental conditions. It was also shown that under conditions of short-term chloride stress in the shoots of triticale, guaiacol peroxidase plays the least role in the utilization of hydrogen peroxide. In this case, salt ions again form a single primary cluster, which combines with other clusters at the maximum Euclidean distance in the experiment.
Deniz Taşımacılığında Akıllı Gemiler: Gemi Kaptanlarının Bakış Açısı
Authors: YORULMAZ Murat , KARABULUT Kaan
Published: February 2021

Deniz taşımacılığında “insansız”, “mürettebatsız”, “özerk” veya “otonom” gemi, kavramları ile de ifade edilen, akıllı karar destek sensörleri ve cihazları yardımıyla uzaktan kumandalı “akıllı” gemilerin önemi her geçen gün artmaktadır. Bu çalışmada, bahse konu akıllı gemilerin deniz taşımacılığında kullanılması ana teması dâhilinde; akıllı gemilerin olası gemi kazalarına etkileri, taşınabilecek yük miktarının değişimi, gemi adamlarının işsiz kalması alt temaları, gemi kaptanlarının bakış açısından incelenmiştir. Araştırmada nitel araştırma modellerinden olgu bilim deseni kullanılmış olup, verilerin toplanması, görüşme tekniği dâhilinde hazırlanan açık uçlu sorulardan oluşan anket ve doküman analizi tekniği ile sağlanmıştır. Toplanan verilerin içerik ve betimsel analiz yöntemleri ile yorumlanması sonucunda elde edilen başlıca bulgular, akıllı gemilerin olası karaya oturma ve çatma türü kazaları azaltacağı, olası yangın kazasına neredeyse etkisi olmayacağı, ancak olası su alma / batma ve yükün zarar görmesi kaza türlerini ise arttıracağı yönündedir. Bunun yanı sıra yönetici düzeyinde çok yönlü gemi adamlarına her durumda ihtiyaç olacağı ve taşınacak yük miktarının ise etkilenmeyeceği sonuçlarına ulaşılmıştır.
TD 2627 - Determinantes do Custo de Comércio Bilateral
Authors: Kume Honorio
Published: February 2021

Custos elevados de comércio dificultam o aproveitamento pleno das vantagens comparativas e reduzem o nível de renda. Este trabalho estima o custo de comércio e seus principais determinantes no período 1995-2015 utilizando informações sobre vendas internas e exportações por país de destino da matriz de insumo produto entre países da Organização para a Cooperação e Desenvolvimento Econômico (em inglês, Organisation for Economic Co-Operation and Development – OECD). Os resultados indicam neste período o custo mediano de comércio bilateral caiu 8,7% nos países de renda alta, 14,9% nos países de renda média e 15,5% nos países de renda baixa, sendo que a queda foi mais acentuada no subperíodo 1995-2005 do que no subperíodo 2005-2015 e que a política tarifária – unilateral ou por acordos comerciais – e a gestão da cadeia logística são os instrumentos que provocam maiores impactos nos custos de comércio.
Moses Mendelssohn
Authors: Altmann Alexander
Published: February 2021

This acclaimed, wide-ranging biography of Moses Mendelssohn (1729–96) was first published in 1973, but its stature as the definitive biography remains unquestioned. Moses Mendelssohn came to be recognized as the inaugurator of a new phase in Jewish history. His life was a kaleidoscope of the European intellectual scene, Jewish and non-Jewish. As both a prominent philosopher and a believing Jew, Mendelssohn became a spokesman for the Jews and Judaism. What was Mendelssohn's Judaism like? To what extent did the disparate worlds of Judaism and modern Enlightenment jostle each other in his mind and to what degree could he harmonize them? These questions are not easily answered, and it is only in the aggregate of a multitude of accounts of experiences, reaction, and statements on his part that the answer is to be found. The book will be of interest not only to those who are concerned with Jewish intellectual history but also to those interested in eighteenth-century cultural and social history, philosophy and theology, literary criticism, aesthetics, and the other areas of intellectual activity in ferment at that time. The general reader will also find much of contemporary relevance in Mendelssohn's life, not only because of his exemplary devotion to reason and tolerance, but also because of his lifelong struggle with the basic dilemma of the Jew in the modern world: the attraction of assimilation versus the singularity of Jewish life, and the preservation of Jewish identity versus integration in the wider society.
Contemplative Prayer
Authors: Jacobs Louis
Published: February 2021

This chapter focuses on a specific aspect of contemplative prayer — the Habad contemplation. Contemplation during prayer is an essential feature of the Habad movement in Hasidism. The word ‘Habad’ is formed from the initial letters of Hokhmah (‘Wisdom’), Binah (‘Understanding’), and Daat (‘Knowledge’). In within the context of Hasidism, Hokhmah, Binah, and Daat are descriptions of man’s contemplative life. Hokhmah is, in Habad thought, the first flash of intuitive knowledge and awareness, the emergence in the mind of a bare idea not as yet elaborated in thought. Binah denotes reflection on the elaborate details of the idea, the giving of form and content to it in the mind. Daat means an attachment of the mind to the idea so that it is fully grasped by the mind and acquires such a firm lodgement therein that, in turn, it is capable of arousing the emotions. Daat both follows on Hokhmah and Binah and is the motivating power, the essential interest, which propels a man towards Hokhmah and Binah.
A Hebrew Account of the Tortosa Disputation
Authors: Yehuda Shevet
Published: February 2021

This chapter presents a Hebrew account of the Tortosa Disputation. It looks at the report sent by the great scholar Bonastruk Demaistre to the holy congregation of Gerona, when the leaders of Israel stood in trouble and distress before Pope Benedict XIII at the request of Joshua Halorki, who, after his apostasy, was called among the Gentiles Master Geronimo de Santa Fe. Geronimo de Santa Fe asked the Pope that the scholars of Israel should come before him, and he would prove to them that the Messiah has come, and is Jesus, and he would prove this from their own Talmud. The report then details the arguments between the representatives of the congregations and Geronimo de Santa Fe over the subject of the Messiah and the Talmud. The representatives of the congregations include Don Vidal ben Benvenista and Rabbi Zeraḥia Halevi of Saragossa, as well as Don Astruk Halevi of Doroca.
Drumont, La France Juive and La Libre Parole
Authors: Wilson Stephen
Published: February 2021

This chapter assesses how the popularization of antisemitism as an ideology providing a total and detailed system of social explanation came in 1886 with the publication of Edouard Drumont's La France juive. La France juive was an almost instant success, selling over 100,000 copies by the end of the first year of its publication. However, the success of this large, two-volume work surprised contemporaries, and has surprised historians, who have seen it as simply “a conglomeration of stupidities and untruths,” or “a collection of scandalous or obscene anecdotes.” As such, its appeal testifies to the strength of the demand which it satisfied. As Drumont himself put it, his “only merit had been to put into print what everyone was thinking.” Meanwhile, the antisemitic movement had consolidated its influence with the foundation in 1892 of an independent antisemitic daily, La Libre Parole, edited by Drumont. By the mid-l890s, Drumont was the generally recognized leader of an antisemitic movement of some importance, “the accepted head of antisemitism.” However, though he enjoyed an “immense popularity” with the public at large, or a section of it, he was a curious and ineffective political leader.
The Antisemitic Movement: Miscellaneous Organizations, General Characteristics and the Press
Authors: Wilson Stephen
Published: February 2021

This chapter highlights the other antisemitic organizations that sprang up in France at the time of the Dreyfus Affair. Many political groups then competed to exploit what seemed a promising means of obtaining popular support, and politicians and publicists across the whole political spectrum openly espoused antisemitism. The chapter looks at those who dubbed themselves, or were known, as “the professional antisemites.” These were the formal groupings and organs whose main declared raison d'être was ideological hostility to Jews, though the distinction between these and less committed organizations is, of course, not absolute or always easy to make. The chapter then analyses the general characteristics of organized antisemitism in France, as well as the role of the press as an instrument for exploiting popular credulity, which is a crucial aspect of the antisemitic movement.