bluuebunny/crossref_metadata_2025 huggingface dataset:
Attitude of the Community People towards Health and Environmental Hazards of Tanneries in Dhaka
Authors: Abdur Rahman  , Dr. Azizur Rahman  , Biplob Kumar Dey
Published: May 2021

The purpose of the present study was to investigate the attitudes of the community people towards health and environmental hazards of tanneries in Dhaka city of Bangladesh. 200 community people were selected as respondents. A semi-structured interview guide was used to collect relevant data. It was an exploratory study following qualitative approach. The findings of the study revealed all of the community people at Hazaribagh felt that their environment is being seriously polluted by tanneries. Most of them suffered from skin disease, allergy, diarrhea, asthma, typhoid, head ache and fever. They have been seriously suffering while moving from one place to another. They mentioned tanneries are responsible for extreme pollution of the Buriganga River. The majority of the respondents think that tanneries should move from Hazaribagh & relocate at any industrial area.
Psychometric Properties and Confirmatory Factor Analysis of the Social Support Scale
Authors: Dr. Deepak Pandey  , Dr. Priyamvada Shrivastava
Published: May 2021

The aim of the present study was to investigate the reliability and validity of a standardized assessment of social support towards HIV positive patients is considered to be associated with improved physical health outcomes. Many scales have been developed to measure social support in psychological professional and researchers. The social support scale has been widely used. This study was designed to examine the psychometric properties and the theoretical structure of the Social support scale. A total of 200 HIV positive participants responded to the social support scale. A hypothetical model was evaluated by structural equation modeling to determine the adequacy of goodness-of-fit to sample data. The model showed excellent goodness-of-fit. The results supported multidimensionality. The 18 item social support provides a valid and reliable scale to measure social support among participants.
A Comparative Study and Association between Depression and Male Infertility
Authors: Pratiti Pattnaik  , Sarat Chandra Gharai  , Narendranath Samantaray
Published: May 2021

Introduction- Infertility affects both male and female. Little attention has been given to the psychological status of infertility male. Aim of this study is to study the association between depression and male infertility. Methods- 61 infertile men and 61 fertile men were randomly selected from DHH Kendrapada, Bhagabati hospital of Kendrapada and CHC of Derabish, Odisha and further administered HAM-D. Present study adopted case controlled design. Data analysis was done by using R statistical software. Results-Statistically significant association between depression and infertility men was found out [p<o.oo1]. It has also been found out that the lower the age group, higher the depressive symptoms. Conclusion-Depression among infertile men is remarkably high and individuals with low age range are at higher risk of developing depression.
A Study of Teacher Effectiveness of Secondary School Student In Relation To Their Emotional Intelligence
Authors: Aruna Yadav  , Aruna Yadav
Published: May 2021

The main objective of the study to investigate the Teacher Effectiveness, Emotional Intelligence and Competence of secondary school teachers. For the present study, 480 teachers and 480 students were listed from 120 schools as a sample. The present study is an ex-post facto type of study involving descriptive survey method. Co-efficient of correlation and t-test are used to analyze the results. The main findings of the present study reveal that the co-efficient of correlation between teacher effectiveness and emotional intelligence of secondary school teachers with respect to total sample study is .70, which is significant beyond .01 levels. It indicates that the relationship between the two variables is positive. Thus a high significant positive relationship is found between teacher effectiveness and emotional intelligence.
The Effect of Musically Perceived Pleasantness and Unpleasantness on Cognitive Functioning of Patients with Depression: An Experimental Approach
Authors: Namrata Chakraborty
Published: May 2021

Research with Indian classical raga on clinical depression has identified a host of emotional factors that guides the harmonious interaction between feeling tone and cognition. Such a harmony between cognition and music which leads to subjectively pleasant and unpleasant mood can extract maximum possible cognitive output in human beings. To test this hypothesis, 36 female subjects with clinically diagnosed depression were taken, of which 16 preadolescent subjects were between the age 7-12 years and the rest 20 subjects was the adolescent group age ranging between 13-15 years. There were three conditions of this research study, A) a control condition where no IV (classical music) was presented; B) experimental condition 1, where pleasantness inducing classical music was presented, C) experimental condition 2, where unpleasantness inducing classical music was presented. Subjects’ mood was estimated before and after the administration of the IV and also their cognitive faculties- attention, perception, learning-memorization and problem solving with different renowned tests and scales. Result was that all the faculties showed improvement due to the effect of independent variable except for the faculty of perception. It was also to be noted that the pre-adolescent group showed better performance in the experimental condition where a musical piece (dhun) with pleasant tone was presented and the adolescent group showed better performance in the experimental condition where less pleasant or mournful musical piece (dhun) was presented.
Creativity in Children: The Role of Child Abuse, Socio-Economic Status and Age
Authors: Abhay Pratap Singh
Published: May 2021

Present study endeavored to investigate the role of child abuse, socio-economic status and age in creative development of children. A 2x3x3 factorial design with two groups (abused and non-abused), socio-economic status (High, Middle, Low) and three age group (Childs i.e., 6 – 10 Yrs., Preadolescents i.e., 11 – 14 Yrs. & Adolescents i.e., 15 – 18 Yrs.). A total of 90 children from Gorakhpur belonging to deferent strata of society participated as respondents. Child abuse checklist (Pandey, 2002) was used to determine various forms of abused and non-abused cases, and to determine the deferent forms of creativity in children, verbal and non-verbal tests of creative  thinking (Mehdi, 1973)  was also used.

Results revealed that the level of creativity varied across different group of children. Moreover, abused children were found inferior on verbal fluency, verbal flexibility, elaboration N (picture), elaboration V (title), originality N (picture), and originality V (title) than non-abused children. Low SES children achieved poor on verbal related fluency, flexibility, originality as well as non-verbal related elaboration N (picture), elaboration V (title), originality N (picture), and originality V (title) than middle and high SES. Furthermore, Childs scored very poor on various dimensions of verbal and non-verbal creativity than pre-adolescents and adolescents respectively. Results have been discussed in the light of individual and social factors
Effects of Life – Skills Counseling In Enhancing Self-Sufficiency among High School Students
Authors: Surma, S  , Sampathkumar  , Surma, S
Published: May 2021

The purpose of the present paper is to know the effectiveness of life-skills counseling intervention in enhancing self-sufficiency of high school students. Life-skills counseling is an educational approach, which is used to inculcate the essential life-skills in an individual to meet the challenges of everyday life.  It is also known to be very effective and appropriate for present day scenario.  It is easily adaptable for larger groups.  High School students are in the stage of adolescence.  High school students face a wide variety of problems out of which the major ones are lack of self-sufficiency, inability to manage emotions, decision-making skills etc.  The present study involves 300 high school students (150 Boys and 150 Girls) who are selected from various schools in Mysore city corporation limit. High School Personality Questionnaire (HSPQ) was administered to find out the personality problems of high school students.  Experimental design has been applied and Life-skills counseling intervention has been given for the experimental group.  Life-skills counseling was found to be very effective in enhancing the self-sufficiency of high school students.
Optimism and Adjustment among Adolescent Girls of Working Mothers and Homemakers: A Comparative Study
Authors: Urvashi Singh  , Shalini Singh
Published: May 2021

The present study aimed to study the differences in Optimism and Adjustment of adolescent girls of mothers working in corporate world and homemakers. The sample consisted of 100 adolescent girls, belonging to an age group of 16-17 years and studying in XI class. Out of 100, 50 girls were those whose mothers were working in Corporate World and 50 were those whose mothers were homemakers. Optimism scale developed by Scheier and Carver (1985) and named as Life Orientation test (LOT) and Bell Adjustment Inventory (1961) were administered to measure optimism and adjustment respectively. The sample was selected from Gurgaon. Findings suggested the significant differences between these two groups. Daughters of homemakers were found high in optimism and social adjustment.
Correlation between Family Environment and Self Esteem of Adolescents
Authors: Aditi Bansal
Published: May 2021

The present investigation attempted to find out the correlation between the family environment and self esteem of adolescents. The study was conducted on 200 adolescents (100 male and 100 female) studying in various educational institutes located in Bathinda.  For data collection Family Environment Scale and Self Esteem Scale were used. For the data analysis various statistical techniques were used. Statistical techniques used were Pearson’s product moment correlation and t-test were used. Pearson’s product moment correlation was used to determine the correlation between different dimensions of family environment scale i.e. Cohesion, Expressiveness, Conflict, Independence, Achievement Orientation, Intellectual Cultural Orientation, Active Recreational Orientation, Moral Religious Emphasis, Organization and control with the self-esteem of adolescents. The results of the investigation shows that their exist no gender differences in the mean scores of all the ten dimensions of family environment and even no gender differences exist in the mean score scores of self esteem of adolescents. Further co-relational analysis revealed that self esteem is positively correlated to Moral Religious Emphasis and negatively correlated to conflict dimension of family environment. The results indicated a clear correlation between family environment and self esteem of adolescents.
Use of ICT in Higher Education
Authors: Dr. Md. Mahmood Alam
Published: May 2021

Information and Communication Technology (ICT), being the building blocks of modern society, has fundamentally changed the practices and procedures of nearly all forms of endeavor within academics and governance. The revolutionary change which is taking place in Information and Communication Technologies (ICTs) has dramatic effects on the way universities carry out their functions of teaching, learning and research, particularly on the creation, dissemination and application of knowledge.  This requires a shift in the delivery and pedagogy used in the current education system. For India to emerge as knowledge super power of the world it is imperative to convert our demographic advantage into knowledge powerhouse by nurturing and honing our working population into knowledge enabled working population. Thus ICT integration is a crying need for capacity building efforts of educational institutions. Research has suggested that using ICT in instruction enables students to take a more active role in their learning rather than their more traditional role of passive observer and listener. With all parameters it acts as a change agent in education and society by promoting a proper balance between content generations and research in critical areas. Therefore it is pertinent to pay attention to the ICT implementation in educational system for imparting easily accessible, affordable and quality higher education.
Perceived Stress as Predictor of Psychological Well-being among Indian Youth
Authors: Kalpna Anand  , Y K Nagle
Published: May 2021

College is a time of varied experiences and expectations wherein students are striving to give a direction to their life and make a career for themselves. Unemployment, fierce competition and insecurity are some of the many problems that the youth of India faces everyday which culminate into stress and has the potential to affect psychological health. Thus, the present study seeks to explore perceived stress and psychological wellbeing among college students and their interrelationship. A total of 281 college students (Males=174, Females= 107) in the age range of 18-24 years, participated in the study. They were administered Perceived Stress Scale and Ryff’s Scale of Psychological Wellbeing. Results revealed that perceived stress had significant negative relation with all the six dimensions of psychological wellbeing.  Perceived Stress accounted for a large variance in all the dimensions of psychological wellbeing. Perceived Stress came out to be one of the major contributors to psychological health and wellbeing.
Personality Correlates of Optimism among Couples
Authors: Naseem Ahmad  , Azmat Jahan  , Nasheed Imtiaz
Published: May 2021

This study aimed to examine the relationship between optimism and personality traits (extraversion-introversion, emotional stability-neuroticism and psychoticism) among couples. The study sample consisted of 30 couples, N=60 (30 males and 30 females) with age ranging from 22 to 28 years were selected from the various places of Delhi NCR. For assessing personality traits, Eysenck Personality Inventory-Revised (EPI-R) by Hans Eysenck was employed and for assessing optimism, Life Orientation Test-Revised (LOT-R) developed by Scheier, Carver, and Bridges (1994) was used. Results of the present study were analysed using Pearson-r correlation and t test. Results of study revealed that:  there is a significant positive correlation between optimism and extraversion (personality traits), (r=.368) and no significant correlation between any other constructs of personality and optimism.  Also, there is no significant difference found between male and female on any of the personality traits (extraversion, (t=.912); neuroticism, (t=-.134); and psychoticism, (t=-.423).) and optimism, (t=1.548). The study has important implications for intervention programs.
Ethics in Psychiatric Research: Issues and Recommendations
Authors: Altaf Ahmad Malla  , Nasir Mohammad Bhat
Published: May 2021

Psychiatric research has increased remarkably over recent decades to help in understanding the current trends and better therapeutic options for illness. On the other hand, there is also a trend toward higher rates of retraction of published papers in the recent years. Ethics is required to maintain and increase the overall quality and morality of research. Psychiatric research faces several unique ethical challenges. Ethical guidelines are very important tool of research which safeguards participants; however, there is a dearth of such guidelines in India. The present paper aims to review available ethical issues and guidelines pertaining to psychiatric research. A search was conducted on Pubmed using search terms (e.g., “ethics,” “psychiatry,” “research”). Relevant studies were selected for the review after manual screening of title/abstract. Additional sources were referred to using cross references and Google Scholar. Psychiatric research has several important ethical issues which are different from other medical disciplines. These issues are related to informed consent, confidentiality, conflict of interest, therapeutic misconception, placebo related, vulnerability, exploitation, operational challenges, among others. The current paper has made several recommendations to deal with ethical challenges commonly faced in psychiatric research. The ethical guidelines are utmost needed for Indian psychiatric research. Specific guidelines are lacking pertaining to psychiatric research. The issues and recommendations merit a further discussion and consideration.
Pediatric middle meningeal artery embolization for chronic subdural hematoma: A case report
Authors: Faber Randall , Feller Christina N. , Gofman Natalie , Fletcher John , Hedayat Hirad S.
Published: May 2021

Background:

The most common neuroradiological finding in pediatric nonaccidental trauma (NAT) is subdural hematoma (SDH). Management options for pediatric SDH range from conservative clinical surveillance to craniotomy or decompressive craniectomy. The middle meningeal artery (MMA) indirectly feeds the hematoma; thus, MMA embolization is an alternative or adjunct to current surgical treatments in adults. Herein, we present, to the best of our knowledge, the first reported case of successful MMA embolization in a pediatric patient as an adjunct to current standard treatment for chronic SDH (cSDH).

Case Description:

An 18-month-old male with a history of NAT presented at 5 months of age with an acute right parietal skull fracture and bilateral SDH treated with burr hole drainage. He was lost to follow-up until 15 months of age with an increased head circumference and new dysconjugate gaze. Imaging revealed a right-sided cSDH and underwent craniotomy. Six-week follow-up revealed significant improvement in the SDH but cSDH remained at the periphery of the craniotomy’s reach. The patient symptoms continued. The right-sided MMA embolization was offered as option to avoid repeat craniotomy. Follow-up CTs at 2 weeks, 3 months, and 6 months postprocedure revealed decrease of cSDH size and density. At 8-month follow-up, the patient continued to meet developmental milestones with near resolution of his dysconjugate gaze.

Conclusion:

This case report details the first successful use of MMA embolization in the treatment of pediatric cSDH as an adjunct to standard treatment. Further investigation of MMA embolization in pediatrics should be made to expand options available for cSDH in this patient population.
Giant posterior mediastinal schwannoma requiring a thoracoabdominal approach for excision: Case report and literature review
Authors: Bhowmik Anindya , Bisht Sneha , Zayar Toe Ko Ko , Joshi George K
Published: May 2021

Background:

A schwannoma is a tumor of the peripheral nerve sheath. They are the most common benign tumor; presenting at any age, and at any site of the body and also one of the most common posterior mediastinal tumors. Posterior mediastinal schwannoma is usually identified incidentally in chest radiographs and with follow-up imaging such as CT scan. Large posterior mediastinal schwannoma usually presents with local symptoms. To confirm diagnosis and obtain local control, surgical excision is the usual approach.

Case Description:

Here, we present a case of a 56-year-old female who presented with chronic low back pain. The lesion was picked up on an ultrasound scan to look at her kidneys. She was not experiencing any neurological symptoms. Excision of the tumor was made through a right thoracoabdominal approach. A WHO Grade 1 tumor was diagnosed on histology. There were no signs of recurrence in the follow-up scans.

Conclusion:

Giant posterior mediastinal schwanommas are very rare with only one other reported case requiring a thoracoabdominal approach for excision. Though giant schwanommas raise concern for malignancy due to their large size, they generally turn out to be benign
Effects of intercropping on growth, elemental composition and antioxidant activity of Artemisia scoparia and Raphanus sativus under lead supply
Authors: Golubkina Nadezhda , Logvinenko Lidia , Koshevarov Andrew , Ushakova Olga , Kosheleva Olga , Shevchuk Oksana , Caruso Gianluca
Published: May 2021

Artemisia species and radish demonstrate intensive allelopathic properties and high ability to hyperaccumulate heavy metals, but their interaction has not been studied up to date. In a pot experiment, the relationship between wormwood (A. scoparia L.) and radish grown individually or intercropped, without and with Pb(NO3)2 supply, was investigated. The intercropping had significant effects in both species, as a consequence of metal allelopathy. Radish showed decrease of root biomass (1.75- fold), Fe, Mn and Zn content (2-fold), Cu level (5.4-fold), and a 1.59-fold Pb increase in the leaves. In wormwood, a 1.75-fold increase of root biomass, as well as a 7.2- and 2.8-fold increase of root and leaf Fe content, respectively, were recorded. A. scoparia, the most Pb tolerant out of the 11 Artemisia species investigated, accumulated 6.6 and 9.9 times more Pb in leaves and roots respectively, compared to radish, under Pb supply which encouraged the growth of both plants. The intercropping under Pb supply induced a three-fold decrease of radish root biomass and 7.8-fold decrease of Pb content. Changes in plant antioxidant activity were recorded only under Pb supply and were not related to radish-wormwood interaction: the leaf phenolics content and antioxidant activity displayed 1.4- and 2- fold increases, respectively, in radish, and 1.4- and 1.6-fold decreases in wormwood. Synchronous changes in elemental composition of wormwood and radish in intercropping conditions, without or under Pb supply, suggest the significance of this phenomenon in plants interaction and arise high prospects of A. scoparia utilization to tackle weeds and soil Pb pollution
RE-SELEX: Restriction Enzyme-Based Evolution of Structure-Switching Aptamer Biosensors
Authors: Sanford Aimee A. , Rangel Alexandra E. , Feagin Trevor A. , Lowery Robert G. , Argueta-Gonzalez Hector , Heemstra Jennifer
Published: May 2021

ABSTRACT Aptamers are widely employed as recognition elements in small molecule biosensors due to their ability to recognize small molecule targets with high affinity and selectivity. Structure-switching aptamers are particularly promising for biosensing applications because target-induced conformational change can be directly linked to an output. However, traditional evolution methods do not select for the significant conformational change needed to create structure-switching biosensors. Modified selection methods have been described to select for structure-switching architectures, but these remain limited by the need for immobilization. Herein we describe the first homogenous, structure-switching aptamer selection that directly reports on biosensor capacity for the target. We exploit the activity of restriction enzymes to isolate aptamer candidates that undergo target-induced displacement of a short complementary strand. As an initial demonstration of the utility of this approach, we performed selection against kanamycin A. Four enriched candidate sequences were successfully characterized as structure-switching biosensors for detection of kanamycin A. Optimization of biosensor conditions afforded facile detection of kanamycin A (90 µM – 10 mM) with high selectivity over three other aminoglycosides. This research demonstrates a general method to directly select for structure-switching biosensors and can be applied to a broad range of small molecule targets.
Open-shell Donors and Closed-shell Acceptors in Organic Solar Cells
Authors: Chen Zhongxin , Li Yuan , Li Wenqiang , Zhu Weiya , Zeng Miao , Wang Jingwen , Zhang Xiaojin , Peng Xiaobin , Du Tian , Deng Yunfeng , Zhang Ren , Li Gongqiang , Hou Jianhui , huang fei , YUAN LI
Published: May 2021

The active materials of organic solar cells are widely recognized to show closed-shell singlet ground state and their electron spin resonance signals are attributed to the defects and impurities. Herein, we disclose the inherent open-shell singlet ground state of donors and the closed-shell structure of acceptors via the combination of variable temperature NMR, electron spin resonance, superconducting quantum interference device and theoretical calculation, providing a new perspective to understand the intrinsic molecular structure in organic solar cells.
Rh2(II)-Catalyzed Intermolecular N-Aryl Aziridination of Olefins using Nonactivated N-Atom Precursors
Authors: Mazumdar Wrickban , Deng Tianning , Yoshinaga Yuki , Patel Pooja B. , Malo Dana , Malo Tala , Wink Donald , Driver Tom
Published: May 2021

The development of the first intermolecular Rh2(II)-catalyzed aziridination of di-, tri-, or tetraubstituted olefins using aryl- or heteroaryl amines as nonactivated N-atom precursors and an iodine(III) reagent as the stoichiometric oxidant is reported. The Rh2(II)-catalyzed N-atom transfer to the olefin is stereospecific, chemo- and diastereoselective to produce the N-aryl aziridine as the only amination product.
Dehydrogenative Double C—H Bond Activation in a Germylene-Rhodium Complex
Authors: Bajo Sonia , Alcaide Maria M. , López-Serrano Joaquin , Campos Jesus
Published: May 2021

Transition metal tetrylene complexes offer great opportunities for molecular cooperation due to the ambiphilic character of the group 14 element. Here we focus on the coordination of germylene [(ArMes2)2Ge:] (ArMes = C6H3-2,6-(C6H2-2,4,6-Me3)2) to [RhCl(COD)]2 (COD = 1,5-cyclooctadinene), which yields a neutral germyl complex in which the rhodium center exhibits both η6- and η2-coordination to two mesityl rings in an unusual pincer-type structure. Chloride abstraction from this species triggers a singular dehydrogenative double C—H bond activation across the Ge/Rh motif. We have isolated and fully characterized three rhodium-germyl species associated to three C—H cleavage events along this process. The reaction mechanism has been further investigated by computational means, supporting the key cooperative action of rhodium and germanium centers.Transition metal tetrylene complexes offer great opportunities for molecular cooperation due to the ambiphilic character of the group 14 element. Here we focus on the coordination of germylene [(ArMes2)2Ge:] (ArMes = C6H3-2,6-(C6H2-2,4,6-Me3)2) to [RhCl(COD)]2 (COD = 1,5-cyclooctadinene), which yields a neutral germyl complex in which the rhodium center exhibits both η6- and η2-coordination to two mesityl rings in an unusual pincer-type structure. Chloride abstraction from this species triggers a singular dehydrogenative double C—H bond activation across the Ge/Rh motif. We have isolated and fully characterized three rhodium-germyl species associated to three C—H cleavage events along this process. The reaction mechanism has been further investigated by computational means, supporting the key cooperative action of rhodium and germanium centers.
Citizen-Led Sampling to Monitor Phosphate Levels in Freshwater Environments Using a Simple Paper Microfluidic Device
Authors: Richardson Samantha , Iles Alexander , Rotchell Jeanette M. , Charlson Tim , Hanson Annabel , Lorch Mark , Pamme Nicole
Published: May 2021

We demonstrate how a combination of paper microfluidic devices and handheld mobile technology can be used by citizen scientists to carry out a sustained water monitoring campaign. We have developed a paper-based analysis device and a 3 minute sampling workflow that requires no more than a container, a test device and a smartphone app. The contaminant measured in these pilots are phosphates, detectable down to 3 mg L-1. Together these allow volunteers to successfully carry out cost-effective, high frequency, phosphate monitoring over an extended geographies and periods.
Gamma Radiation Induced Contraction of Alkyne Modified Polymer Hydrogels
Authors: Brevé Tobias , Liu Huanhuan , Denkova Antonia , Eelkema Rienk
Published: May 2021

We describe the gamma radiation induced crosslinking of alkyne-modified dextran polymer gels. Crosslinking of the alkyne moieties leads to gel contraction and fusion with other gel objects, and can be used for controlled release.
Elucidation of Charge Contribution in Iridium-Chelated Hydrogen-Bonding Systems
Authors: Balonova Barbora , Blight Barry
Published: May 2021

We present two iridium complexes 1H+ and 2H+ 9 that contain cationic ligands to extend the knowledge 10 of charge-assisted hydrogen bonding (CAHB), which counts among the strongest non-covalent 11 bonding interactions. Upon protonation, both complexes were converted into new hydrogen-bonding 12 arrays with various selectivity for respective H-bonding partners. This study compares the association 13 strengths of four hydrogen-bonding co-systems, emphasizing the roles of CAHB in supramolecular systems. We determined that the cationic charge in these systems contributed up to 2.7 kJ mol-1 14 in the 15 H-bonding complexation processes
An Inquiry Into the Pedagogy of the Sensory Perception Tasting Component of Wine Courses in the Time of COVID-19
Authors: Carmer Adam , Velikova Natalia , Hertzman Jean , Bergman Christine , Wray Michael , Pippert Taricia LaPrevotte
Published: May 2021

In March 2020, universities switched to online learning in response to the COVID-19 pandemic. The use of technology, asynchronous scheduling, and the semi-anonymous nature of online courses created challenges for engaging students and the teacher-student relationship. The problem was especially relevant for curricula with multisensory components like wine tasting. In Summer 2020, the BevEd SIG became a virtual faculty learning community of both experienced and novice beverage instructors. The group discussed their experiences and addressed the pedagogy, logistics, and potential problems of maintaining the sensory perception (seeing, smelling, and tasting) component as an integral part of wine courses regardless of the class format. The experiential learning of sensory perception as the skill of tasting and evaluating wine is also essential in the industry, including wineries, distributorships, wine sales, serving, bartending, and training. The evaluation of the challenges of teaching the sensory perception tasting component of wine courses during COVID-19 and the solutions developed by the BevEd SIG to address them can be considered best practices for wine course instruction and experiential training for staff and customer sales and events.
Revisão de literatura em ambiente virtual de aprendizagem no Ensino Básico com uso de plataformas digitais
Authors: Fiori Raquel , Goi Mara Elisangela Jappe
Published: May 2021

O objeto deste artigo é uma investigação bibliométrica baseada em 30 artigos apresentados a partir da análise em periódicos com estratos Qualis A na área de Ensino que apresenta o uso dos Ambientes Virtuais de Aprendizagem (AVA) no Ensino Básico. O objetivo é investigar se há limitações e potencialidades, especificamente no Ensino de Ciências quando aplicado de forma remota ou híbrida. Na metodologia, iniciou-se pelo aspecto quantitativo de publicações, e, após, feita a seleção de artigos para uma análise qualitativa. Foram analisados os artigos de periódicos nacionais e internacionais, entre os anos 2010 e 2020 através do Portal Periódicos da CAPES. A seleção dos artigos foi através do gerenciador de referências Mendeley com o uso de palavras-chave. A partir desta busca emergiram categorias de análise que foram analisadas pela ferramenta de Análise de conteúdo de Bardin. Os resultados demonstram que houve uma predominância de publicações multidisciplinares sobre este assunto, a partir do ano 2014 tanto no ensino a distância e híbrido como no presencial, mais especificamente na Educação Básica: nível Médio e Fundamental centrados nas necessidades de professores e alunos como estratégias para a construção dos processos de ensino e de aprendizagem.
Laser-ultrasonic study of the local porosity of reactive cast aluminum-matrix composites
Authors: Podymova N. B. , Kalashnikov I. E. , Kobeleva L. I.
Published: May 2021

One of the most critical manufacturing defects of cast metal-matrix composites is a non-uniform porosity distribution over the composite volume. Unevenness of the distribution leads not only to local softening, but also plays a key role in the evolution of the damage process under the external loads. The goal of the study is to apply a new laser-ultrasonic method to in-situ study of a local porosity in reactive cast aluminum-matrix composites. The proposed method is based on statistical analysis of the amplitude distribution of backscattered broadband pulses of longitudinal ultrasonic waves in the studied materials. Laser excitation and piezoelectric detection of ultrasound were carried out using a laser-ultrasonic transducer. Two series of reactive cast aluminum-matrix composites were analyzed: reinforced byin situsynthesized Al3Ti intermetallic particles in different volume concentrations and by Al3Ti added with synthetic diamond nanoparticles. It is shown that for both series of the composites, the amplitude distribution of backscattered ultrasonic pulses is approximated by the Gaussian probability distribution applicable for statistics of large number of independent random variables. The empirical dependence of the half-width of this distribution on the local porosity in composites of two series is approximated by the same nearly linear function regardless of the size and fraction of reinforcing particles. This function was used to derive the formula for calculation of the local porosity in the studied composites. The developed technique seems to be promising in revealing potentially dangerous domains with high porosity in reactive-cast metal-matrix composites.
Study of the damage to 12Cr18Ni10Ti steel samples under low cycle fatigue using methods of nondestructive control
Authors: Khlybov A. A. , Kabaldin Yu. G. , Ryabov D. A. , Anosov M. S. , Shatagin D. A.
Published: May 2021

The possibility of determining the degree of damage to flat samples in the area of low-cycle fatigue at the stage of accumulation of scattered damage before the appearance of a macroscopic crack is demonstrated. Flat samples were tested for cantilever bending at room temperature with a constant loading amplitude until a fatigue crack appeared. Austenitic steel 12Cr18Ni10Ti was used as a test material. The velocity (propagation time) of elastic waves in the material and the coercive force were measured upon testing at intervals of 500 cycles. The zone of damage development was analyzed and value of hardening (based on microhardness measurements) was determined within 15 mm of the developed crack. The analysis of the images of the alloy microstructures in the zone of the most likely crack propagation was performed following different number of cycles at the same point on the sample surface. The structural changes (γ – α transition (formation of martensite deformation)) that occur during cyclic loading, as well as nucleation and development of damage, followed by the formation of fatigue cracks, inevitably lead to changes in the elastic and magnetic properties of the material. At the initial stages of loading, we observed changes in the initial (both acoustic and magnetic) characteristics of the material, which later became stable or changed slightly. When operating time exceeded 80 % of the number of cycles before failure, a significant change in the measured parameters occurred. The obtained dependences of the acoustic and magnetic characteristics of the material provide reliable information about the current damage and can be used in estimating the residual life of the structures made of 12Cr18Ni10Ti steel.
Special empirical processes of independence indexed by classes of measurable functions
Authors: Abdushukurov A. A.
Published: May 2021

When analyzing statistical data in biomedical research, insurance, demography, as well as in other areas of practical research, random variables of interest take on certain values depending on the occurrence of certain events, e.g., when testing physical systems (individuals), the values of their operating time depend on the failures of subsystems; in the insurance business, the payments of insurance companies to their customers depends on insured events. In such experimental situations, the problems of studying the dependence of random variables on the corresponding events become rather important thus entailing the necessity to study the limiting properties of empirical processes indexed by classes of functions. The modern theory of empirical processes generalizes the classical results of the laws of large numbers, central and other limit theorems uniformly over the entire class of indexing under the imposition of entropy conditions. These theorems are generalized analogs of the classical theorems of Glivenko – Cantelli and Donsker. Special empirical processes are proposed in the study to check the independence of a random variable and an event. The properties of convergence of empirical processes to the corresponding Gaussian processes are analyzed. The results obtained are used to test the validity of the random right censoring model.
SİBER GÜVENLİK KAPSAMINDA ENERJİ SİSTEMLERİ GÜVENLİĞİNİN DEĞERLENDİRİLMESİ
Authors: AYDIN Hakan , BARIŞKAN Mehmet Ali , ÇETİNKAYA Ali
Published: May 2021

Günümüzde enerji sistemlerinde Bilgi ve İletişim Teknolojilerine (BİT) ve özellikle de İnternete olan artan oranlardaki bağımlılık, bu sistemlerde siber güvenliğin sağlanmasını zorunlu hale getirmiştir. Enerji sistemlerinde kullanılan bilişim teknolojilerinde meydana gelebilecek siber güvenlik olayları; enerji hizmetlerinin durmasına, aksamasına, büyük ölçekli ekonomik zarar görülmesine, kamu düzeninin bozulmasına, can kaybı yaşanmasına ve hatta ülkelerin ulusal güvenliğinin tehlikeye düşmesine neden olma risklerini içermektedir. Bu araştırmanın amacı; enerji sistemlerinde siber güvenlik kavramlarının genel çerçevesini çizmek, enerji sistemlerine yönelik yaşanmış siber saldırıları araştırmak, bu çerçevede SCADA ile yönetilen kritik altyapılarda, özellikle de enerji sistemleri altyapılarında, siber güvenliğin önemini ortaya koymak ve bu konuya ilişkin mevcut farkındalığın artırılmasına yönelik öneriler getirmek olarak belirlenmiştir. Araştırmada betimleme yöntemi kullanılmıştır. Araştırmada elde edilen bilgiler, enerji sistemlerinde siber güvenliğin sağlanmasının hayati derecede öneme sahip olduğu yönündedir. Çalışmada getirilen öneriler arasında, özellikle Türkiye’de enerji sektöründe ulusal siber güvenlik testlerinden geçirilmiş ve ulusal sertifikasyona sahip akredite yerli güvenlik danışman şirketleri tarafından tasarlanmış ve test edilmiş milli siber güvenlik bilgi teknolojileri ve ürünleri kullanılması hususuna özellikle vurgu yapılmıştır.
Experimental and Mesoscopic Lattice Numerical Investigation of Increase of Chloride Diffusivity Coefficient during Uniaxial Loading Model
Authors: Bui Truong Son , DUC THO Pham
Published: May 2021

This paper presents experimental and simulation results of the change in the chloride diffusion coefficient of concrete C40 (f’c=40 MPa) during axial loading. Test Method for Electrical Indication was used to measure the chloride diffusivity of the concrete sample during the axial loading. A mesoscopic lattice model is proposed to describe the variation of chloride diffusion coefficient versus damage variable. In such a model, the domain of material is discretized randomly by using Voronoi tessellation for the transport element and Delaunay triangulation for a mechanical element. At the mesoscale, the concrete is constituted by three phases: aggregate, cement paste and ITZ, in which aggregate is assumed to be elastic while cement matrix and ITZ are represented by a damage model with softening. The experimental and numerical results show that in the first stage, without crack (s < 40%smax), the chloride diffusion coefficient remains almost constant, however in the crack initiation and propagation stage (s = 60-80%smax) chloride diffusion coefficient increases significantly. An empirical power model is also proposed to describe the increase of the chloride diffusion coefficient versus stress level and damage variable.
Estimation of Coal and Rock Mechanical Properties for Numerical Modelling of Longwall Extraction
Authors: Dung Le Tien , NGUYEN Chi Thanh , DAO Van Chi
Published: May 2021

Reliable estimation of coal and rock mechanical properties at field scale is a prerequisite for numerical modelling of rock behaviours associated with longwall extraction. This paper describes a systematic approach from data collection, laboratory testing to rock mass properties derivation for simulation of longwall extraction, taking two longwall panels at Quang Ninh coalfield in Vietnam for example. The mechanical properties are verified through comparison with published data of the field, indicating close agreements. A simple numerical model is further developed to demonstrate the proper use of the obtained data. The simulation suggests that the ratio of model length to excavation length should be in the range of 2.5–5; uniaxial compressive strength, deformation modulus and tensile strength can be reduced by a factor of 5.0, 2.13 and 2.0, respectively; and a calibration and validation process must be performed to match in-situ longwall’s behaviours. The approach can be applied for derivation of reliable rock mass properties for numerical simulation of underground excavations.
Identification of Extension Methods Based on Local Wisdom to Increase Public Awareness and Understanding of Antimicrobial Control
Authors: Mashur  , Kholik Kholik , Oktaviana Dina , Munawaroh Muhammad , Rama Imam Saputra Muhammad , Sa’diyah Siti Nurus
Published: May 2021

The number of people experiencing antimicrobial resistance continues to increase from year to year it can be a global threat to public health and animal health that can have an impact on the sustainability of the agricultural sector, food security, and environmental security. One of the contributing factors is the lack of public awareness and understanding of the dangers of antimicrobial resistance. For that, we need efforts to increase outreach activities to the community. This study aims to identify the most effective local wisdom- based extension methods for increasing public awareness and understanding of antimicrobial control. The research was conducted using a survey method from September to December 2020 in 10 districts/cities in West Nusa Tenggara. The number of respondents was 71 people determined by positive random sampling. Data were analysis descriptively based on frequency distribution data. The results showed that there were 45 types of extension media that could be used to convey information on antimicrobial control, namely: media extension based on local wisdom as much as 59.15%; conventional extension media 35.21% and modern extension media 5.64%. Extension methods that are effectively applied are extension methods with an 80% group approach; direct communication 86.67% and extension methods with a combination of 91.11% senses. The conclusion is that the local wisdom-based extension method is the most effective method with a group approach, direct communication and uses a combination of the senses of acceptance (sight, hearing, touch, taste, and smell).
THE IMPACT OF MARKETING MIX ON THE PURCHASE DECISION WHEN BORROWING CONSUMER LOANS
Authors: Athar Handry Sudiartha
Published: May 2021

The purpose of this study was to determine the importance of the influence of the marketing mix, consisting of products, prices, places, promotions, physical evidence, people and processes on the customer's decision to borrow consumer credit, and to find out which of the seven marketing mix variables had the most impact dominant in the customer's decision to borrow consumer credit from PT. Bank NTB Syariah. This study is a descriptive study with both a population and a sample of 50 people obtained by non-probability techniques that is, using targeted sampling. Data collection techniques used were interviews, observation and documentation. This type of research data is quantitative data and qualitative data. Data sources used are primary data and secondary data. Data analysis was performed by multiple regression analysis with the F test to test the significance of the relationship of the seven independent variables along with the dependent variable. The results showed that 1) the marketing mix of services consisting of products, prices, promotions, places, people, processes and physical evidence had a significant impact on customer loan decision making; 2) Process variables have the most dominant influence on the customer's decision to borrow consumer credit from PT. Bank NTB Syariah.
The Source of Stress of Students During Pandemic COVID-19: a Qualitative Study
Authors: Fitriyana Susan , Respati Titik , Sartika Dewi
Published: May 2021

The COVID-19 pandemic can lead to students' mental health problems, such as anxiety, depression, and stress. The government's policy for study from home exacerbates mental health problems. This study aimed to determine the source of student stress during the study from home during the COVID-19 pandemic. The study design used qualitative research. The sampling technique uses consecutive sampling. This research involved 36 students from the faculty of psychology and the faculty of medicine in Bandung city who underwent study from home (SFH). Data were collected by interviewing participants in May 2020. This study's results are the dominant thing that participants feel during the study from home is boredom, relaxed, and complicated; the things they missed during learning at home were friends, playing, and chatting; and they feel fear, sadness, and anxiety when heard the news about COVID-19. This study concludes that the source of student stress was being far from friends, limited communication and face-to-face contact with friends and lecturers, and did not get direct attention from friends or lecturers. SUMBER STRES MAHASISWA SELAMA MASA PANDEMIK COVID-19: PENELITIAN KUALITATIFPandemik COVID-19 dapat mengakibatkan masalah kesehatan mental untuk mahasiswa seperti kecemasan, depresi, dan stress. Kebijakan pemerintah untuk melakukan pendidikan jarak jauh (PJJ) telah memperburuk masalah kesehatan mental. Tujuan dari penelitian ini adalah untuk menentukan sumber stres mahasiswa selama menjalani PJJ di masa pandemik COVID-19. Desain penelitian ini adalah penelitian kualitatif. Metode pengambilan sampel adalah consecutive sampling dengan melibatkan 36 mahasiswa dari fakultas psikologi dan fakultas kedokteran di Kota Bandung yang menjalani PJJ. Data diambil dengan melakukan wawancara kepada partisipan pada bulan Mei 2020. Hasil dari penelitian ini adalah perasaan dominan yang dirasakan partisipan selama PJJ adalah bosan, santai dan tidak praktis; hal yang dirindukan selama masa kuliah di rumah adalah teman, bermain dan mengobrol; dan hal yang terlintas ketika mendengar berita tentang COVID-19 adalah takut, sedih dan cemas. Kesimpulan dari penelitian ini adalah sumber stres mahasiswa adalah merasa jauh dengan teman, komunikasi dan kontak tatap muka dengan teman dan dosen yang terbatas serta tidak mendapatkan perhatian langsung dari teman dan dosen.