bluuebunny/crossref_metadata_2025 huggingface dataset:
ILLUMINATING STUDENTS’ UNDERSTANDING AND ACCEPTANCE TOWARDS THE DUAL LANGUAGE PROGRAMME (DLP)
Authors: Suliman Ashairi , Mohd Nor Mohamed Yusoff , Md Yunus Melor
Published: October 2020

The Dual Language Programme (DLP) is an initiative introduced by the Ministry of Education to advocate the teaching and learning of science and mathematics in the English language. Resembling the previous educational policy named PPSMI, this programme commenced in 2016, offering the flexibility for English to be used as the instructional medium for the two subjects. After four years of its inception, it is crucial to discover the programme's acceptance among those involved directly with the programme. Thus, this study expounds students’ understanding and acceptance of the programme by investigating the influence of age, gender, locality and the type of school on their understanding and acceptance of DLP.   This study involved 2162 students, and it was found that their understanding and acceptance level of the programme are at a moderately high level. The findings also revealed a significant difference between the acceptance of the programme. As an alternative to solidify the English mastery, the implementation of DLP needs to be improved for it to be well-accepted by interest groups.
WEBSITE-BASED TECHNOLOGICAL PEDAGOGICAL AND CONTENT KNOWLEDGE FOR LEARNING PREPARATION OF SCIENCE TEACHERS
Authors: Wilujeng Insih , Tadeko Nugan , Dwandaru Wipsar Sunu Brams
Published: October 2020

This study produces technological pedagogical and content knowledge (TPACK) instruments, which conventionally use print modules. The aims of this study were 1) to develop appropriate website-based TPACK instruments, and 2) to determine the effect of the produced website-based TPACK instruments toward the pedagogy competence of Science teachers in their learning preparation in the classroom. The methodology used was based on the ADDIE stages which stand for analyze, design, develop, implement, and evaluate. The results of this study include 1) instructions for producing TPACK instruments based on the results of synthesis; 2) instructions for making a website format based on the synthesis results; 3) TPACK framework design in website content; 4) TPACK instruments validation results; and 5) website validation results. Moreover, limited and field tests were conducted upon the website-based TPACK instruments to determine their effect toward the pedagogy competence of Science teachers.  Quantitatively, the TPACK instruments scored 70 out of 76, while the website scored 60 out of 90. Finally, the limited and field tests results showed that website-based TPACK instruments positively affect the pedagogy competence of Science teachers in their learning preparation in the classroom with an overall Good category and a Very Good category for the usage evaluation from the users.
School management: The optimization of learning facilities to improve the quality of vocational schools
Authors: Setia Rahman , Nasrudin Dindin
Published: October 2020

The creation of qualified graduates is a parameter of the implementation of quality education. Vocational schools become one of the learning places to produce quality human resources who are ready to enter the world of business and industry. Effective and efficient management of learning facilities and infrastructure is a leadership strategy of the related parties in the school to improve the quality of graduates. This research uses a qualitative approach with a case-study design. A total of three vocational schools in Sumedang Regency were selected as participants. This research aims to understand, describe, and analyze the school principals' leadership strategies in managing and developing learning facilities and infrastructure to improve the quality of their graduates. The research data were collected through observation, interviews, documentation studies, and field notes. The results showed that despite all the problems due to the limited availability of practical equipment and the minimal cost allocated, vocational schools in Sumedang Regency are able to produce graduates with the certified expertise competencies by the industrial world. The use of learning facilities and infrastructure to improve the quality of graduates in the three vocational schools participating in the research has been running optimally. However, the strategy for developing learning facilities and infrastructure has not been implemented as expected. Planning, implementation, and supervision are stages that must be highly considered by school principals in managing learning facilities and infrastructure.
Design and Printing of a Low-Cost 3D-Printed Nasal Osteotomy Training Model: Development and Feasibility Study
Authors: Ho Michelle , Goldfarb Jared , Moayer Roxana , Nwagu Uche , Ganti Rohan , Krein Howard , Heffelfinger Ryan , Hutchinson Morgan Leigh
Published: October 2020

Background

Nasal osteotomy is a commonly performed procedure during rhinoplasty for both functional and cosmetic reasons. Teaching and learning this procedure proves difficult due to the reliance on nuanced tactile feedback. For surgical simulation, trainees are traditionally limited to cadaveric bones, which can be costly and difficult to obtain.

Objective

This study aimed to design and print a low-cost midface model for nasal osteotomy simulation.

Methods

A 3D reconstruction of the midface was modified using the free open-source design software Meshmixer (Autodesk Inc). The pyriform aperture was smoothed, and support rods were added to hold the fragments generated from the simulation in place. Several models with various infill densities were printed using a desktop 3D printer to determine which model best mimicked human facial bone.

Results

A midface simulation set was designed using a desktop 3D printer, polylactic acid filament, and easily accessible tools. A nasal osteotomy procedure was successfully simulated using the model.

Conclusions

3D printing is a low-cost, accessible technology that can be used to create simulation models. With growing restrictions on trainee duty hours, the simulation set can be used by programs to augment surgical training.
The Role of Technology and Social Media Use in Sleep-Onset Difficulties Among Italian Adolescents: Cross-sectional Study
Authors: Varghese Nirosha Elsem , Santoro Eugenio , Lugo Alessandra , Madrid-Valero Juan J , Ghislandi Simone , Torbica Aleksandra , Gallus Silvano
Published: October 2020

Background

The use of technology and social media among adolescents is an increasingly prevalent phenomenon. However, there is a paucity of evidence on the relationship between frequency of use of electronic devices and social media and sleep-onset difficulties among the Italian population.

Objective

The aim of this study is to investigate the association between the use of technology and social media, including Facebook and YouTube, and sleep-onset difficulties among adolescents from Lombardy, the most populous region in Italy.

Methods

The relationship between use of technology and social media and sleep-onset difficulties was investigated. Data came from the 2013-2014 wave of the Health Behavior in School-aged Children survey, a school-based cross-sectional study conducted on 3172 adolescents aged 11 to 15 years in Northern Italy. Information was collected on difficulties in falling asleep over the last 6 months. We estimated the odds ratios (ORs) for sleep-onset difficulties and corresponding 95% CIs using logistic regression models after adjustment for major potential confounders.

Results

The percentage of adolescents with sleep-onset difficulties was 34.3% (1081/3151) overall, 29.7% (483/1625) in boys and 39.2% (598/1526) in girls. It was 30.3% (356/1176) in 11-year-olds, 36.2% (389/1074) in 13-year-olds, and 37.3% (336/901) in 15-year-olds. Sleep-onset difficulties were more frequent among adolescents with higher use of electronic devices, for general use (OR 1.50 for highest vs lowest tertile of use; 95% CI 1.21-1.85), use for playing games (OR 1.35; 95% CI 1.11-1.64), use of online social networks (OR 1.40 for always vs never or rarely; 95% CI 1.09-1.81), and YouTube (OR 2.00; 95% CI 1.50-2.66).

Conclusions

This study adds novel information about the relationship between sleep-onset difficulties and technology and social media in a representative sample of school-aged children from a geographical location that has not been included in studies of this type previously. Exposure to screen-based devices and online social media is significantly associated with adolescent sleep-onset difficulties. Interventions to create a well-coordinated parent- and school-centered strategy, thereby increasing awareness on the unfavorable effect of evolving technologies on sleep among adolescents, are needed.
Smartphone Overuse and Visual Impairment in Children and Young Adults: Systematic Review and Meta-Analysis
Authors: Wang Jian , Li Mei , Zhu Daqiao , Cao Yang
Published: October 2020

Background

Smartphone overuse has been cited as a potentially modifiable risk factor that can result in visual impairment. However, reported associations between smartphone overuse and visual impairment have been inconsistent.

Objective

The aim of this systematic review was to determine the association between smartphone overuse and visual impairment, including myopia, blurred vision, and poor vision, in children and young adults.

Methods

We conducted a systematic search in the Cochrane Library, PubMed, EMBASE, Web of Science Core Collection, and ScienceDirect databases since the beginning of the databases up to June 2020. Fourteen eligible studies (10 cross-sectional studies and 4 controlled trials) were identified, which included a total of 27,110 subjects with a mean age ranging from 9.5 to 26.0 years. We used a random-effects model for meta-analysis of the 10 cross-sectional studies (26,962 subjects) and a fixed-effects model for meta-analysis of the 4 controlled trials (148 subjects) to combine odds ratios (ORs) and effect sizes (ES). The I2 statistic was used to assess heterogeneity.

Results

A pooled OR of 1.05 (95% CI 0.98-1.13, P=.16) was obtained from the cross-sectional studies, suggesting that smartphone overuse is not significantly associated with myopia, poor vision, or blurred vision; however, these visual impairments together were more apparent in children (OR 1.06, 95% CI 0.99-1.14, P=.09) than in young adults (OR 0.91, 95% CI 0.57-1.46,P=.71). For the 4 controlled trials, the smartphone overuse groups showed worse visual function scores compared with the reduced-use groups. The pooled ES was 0.76 (95% CI 0.53-0.99), which was statistically significant (P<.001).

Conclusions

Longer smartphone use may increase the likelihood of ocular symptoms, including myopia, asthenopia, and ocular surface disease, especially in children. Thus, regulating use time and restricting the prolonged use of smartphones may prevent ocular and visual symptoms. Further research on the patterns of use, with longer follow up on the longitudinal associations, will help to inform detailed guidelines and recommendations for smartphone use in children and young adults.
Associations Between Patient Health Outcomes and Secure Message Content Exchanged Between Patients and Clinicians: Retrospective Cohort Study (Preprint)
Authors: Heisey-Grove Dawn M , McClelland Laura E , Rathert Cheryl , Tartaglia Alexander , Jackson Kevin , DeShazo Jonathan P
Published: October 2020

BACKGROUND

The number of electronic messages securely exchanged between clinic staff and patients has risen dramatically over the last decade. A variety of studies explored whether the volume of messages sent by patients was associated with outcomes. None of these studies, however, examined whether message content itself was associated with outcomes. Because secure messaging is a significant form of communication between patients and clinic staff, it is critical to evaluate the context of the communication to best understand its impact on patient health outcomes.

OBJECTIVE

To examine associations between patients’ and clinicians’ message content and changes in patients’ health outcomes.

METHODS

We applied a taxonomy developed specifically for secure messages to 14,394 patient- and clinic staff–generated messages derived from patient-initiated message threads. Our study population included 1602 patients, 50.94% (n=816) of whom initiated message threads. We conducted linear regression analyses to determine whether message codes were associated with changes in glycemic (A1C) levels in patients with diabetes and changes in systolic (SBP) and diastolic (DBP) blood pressure in patients with hypertension.

RESULTS

Patients who initiated threads had larger declines in A1Cs (P=.01) compared to patients who did not initiate threads. Clinic nonresponse was associated with decreased SBP (β=–.30; 95% CI –0.56 to –0.04), as were staffs’ action responses (β=–30; 95% CI –0.58 to –0.02). Increased DBP, SBP, and A1C levels were associated with patient-generated appreciation and praise messages and staff encouragement with effect sizes ranging from 0.51 (A1C) to 5.80 (SBP). We found improvements in SBP associated with patients’ complaints (β=–4.03; 95% CI –7.94 to –0.12). Deferred information sharing by clinic staff was associated with increased SBP (β=1.29; 95% CI 0.4 to 2.19).

CONCLUSIONS

This is the first research to find associations between message content and patients’ health outcomes. Our findings indicate mixed associations between patient message content and patient outcomes. Further research is needed to understand the implications of this work; in the meantime, health care providers should be aware that their message content may influence patient health outcomes.
Consumer-Guided Development of an Engagement-Facilitation Intervention for Increasing Uptake and Adherence for Self-Guided Web-Based Mental Health Programs: Focus Groups and Online Evaluation Survey (Preprint)
Authors: Gulliver Amelia , Calear Alison L , Sunderland Matthew , Kay-Lambkin Frances , Farrer Louise M , Banfield Michelle , Batterham Philip J
Published: October 2020

BACKGROUND

Self-guided web-based mental health programs are effective in treating and preventing mental health problems. However, current engagement with these programs in the community is suboptimal, and there is limited evidence indicating how to increase the use of existing evidence-based programs.

OBJECTIVE

This study aims to investigate the views of people with lived experience of depression and anxiety on factors influencing their engagement with self-guided web-based mental health (e–mental health) programs and to use these perspectives to develop an engagement-facilitation intervention (EFI) to increase engagement (defined as both uptake and adherence) with these programs.

METHODS

A total of 24 community members (female=21; male=3) with lived experience of depression and anxiety or depression or anxiety alone participated in 1 of 4 focus groups discussing the factors influencing their engagement with self-guided e–mental health programs and the appearance, delivery mode, and functionality of content for the proposed EFI. A subsequent evaluation survey of the focus group participants (n=14) was conducted to evaluate the resultant draft EFI. Data were thematically analyzed using both inductive and deductive qualitative methods.

RESULTS

Participants suggested that the critical component of an EFI was information that would challenge personal barriers to engagement, including receiving personalized symptom feedback, information regarding the program’s content or effectiveness and data security, and normalization of using e–mental health programs (eg, testimonials). Reminders, rewards, feedback about progress, and coaching were all mentioned as facilitating adherence.

CONCLUSIONS

EFIs have the potential to improve community uptake of e–mental health programs. They should focus on providing information on the content and effectiveness of e–mental health programs and normalizing their use. Given that the sample comprised predominantly young females, this study may not be generalizable to other population groups. There is a strong value in involving people with a lived experience in the design and development of EFIs to maximize their effectiveness.
Validation of Visual and Auditory Digital Markers of Suicidality in Acutely Suicidal Psychiatric Inpatients: Proof-of-Concept Study (Preprint)
Authors: Galatzer-Levy Isaac , Abbas Anzar , Ries Anja , Homan Stephanie , Sels Laura , Koesmahargyo Vidya , Yadav Vijay , Colla Michael , Scheerer Hanne , Vetter Stefan , Seifritz Erich , Scholz Urte , Kleim Birgit
Published: October 2020

BACKGROUND

Multiple symptoms of suicide risk have been assessed based on visual and auditory information, including flattened affect, reduced movement, and slowed speech. Objective quantification of such symptomatology from novel data sources can increase the sensitivity, scalability, and timeliness of suicide risk assessment.

OBJECTIVE

We aimed to examine measurements extracted from video interviews using open-source deep learning algorithms to quantify facial, vocal, and movement behaviors in relation to suicide risk severity in recently admitted patients following a suicide attempt.

METHODS

We utilized video to quantify facial, vocal, and movement markers associated with mood, emotion, and motor functioning from a structured clinical conversation in 20 patients admitted to a psychiatric hospital following a suicide risk attempt. Measures were calculated using open-source deep learning algorithms for processing facial expressivity, head movement, and vocal characteristics. Derived digital measures of flattened affect, reduced movement, and slowed speech were compared to suicide risk with the Beck Scale for Suicide Ideation controlling for age and sex, using multiple linear regression.

RESULTS

Suicide severity was associated with multiple visual and auditory markers, including speech prevalence (β=−0.68, P=.02, r2=0.40), overall expressivity (β=−0.46, P=.10, r2=0.27), and head movement measured as head pitch variability (β=−1.24, P=.006, r2=0.48) and head yaw variability (β=−0.54, P=.06, r2=0.32).

CONCLUSIONS

Digital measurements of facial affect, movement, and speech prevalence demonstrated strong effect sizes and linear associations with the severity of suicidal ideation.
Retention of the Aboriginal Health, Ageing, and Disability Workforce: Protocol for a Mixed Methods Study (Preprint)
Authors: Gilroy John , Bulkeley Kim , Talbot Folau , Gwynn Josephine , Gwynne Kylie , Henningham Mandy , Alcorso Caroline , Rambaldini Boe , Lincoln Michelle
Published: October 2020

BACKGROUND

Despite a plethora of research into Aboriginal employment and recruitment, the extent and nature of the retention of frontline Aboriginal people in health, ageing, and disability workforces are currently unknown. In this application, frontline service delivery is defined as Aboriginal people who are paid employees in the health, ageing, and disability service sectors in roles that involve direct client, participant, or patient contact. There is a need to identify the factors that inhibit (push) and promote (pull) staff retention or departure of this workforce from the sectors. This study will provide additional insight about this topic.

OBJECTIVE

The objective of this project is to uncover the factors that influence the retention of frontline Aboriginal workers in the health, ageing, and disability workforces in New South Wales (NSW) who do not have university qualifications. The aim of the proposed project aims to discover the push and pull factors for the retention of the frontline Aboriginal workforce in the health, ageing, and disability sectors in NSW in relation to their role, employment, and community and design evidence-based strategies for retaining the Aboriginal frontline workforce in the health, ageing, and disability sectors in NSW.

METHODS

The proposed research will use a mixed methods approach, collecting both quantitative and qualitative data via surveys and interviews to capture and represent the voices and perspectives of Aboriginal people in a way that the participants chose.

RESULTS

Indigenous research methodologies are a growing field in Aboriginal health research in Australia. A key strength of this study is that it is led by Aboriginal scholars and Aboriginal controlled organizations that apply an Indigenous methodological framework throughout the research process.

CONCLUSIONS

This study uses a mixed methods design. The survey and interview questions and model were developed in partnership with Aboriginal health, ageing, and disability service workers rather than relying only on research publications on the workforce, government policies, and human resources strategies. This design places a strong emphasis on generalizable findings together with an inductive approach that explores employers and workers’ lived experience of the Aboriginal health workforce in NSW. Excluding workers who have graduated from university places a strong focus on the workforce who have obtained either school or Technical and Further Education or registered training organizations qualifications. Data collection was conducted during the COVID-19 pandemic, and results will include the unique experiences of Aboriginal workers and employers delivering services in an extremely challenging organizational, community, and personal context.

INTERNATIONAL REGISTERED REPORT

PRR1-10.2196/25261
The impact of COVID-19 on sport in twitter: a quantitative and qualitative content analysis (Preprint)
Authors: González Luis-Millán , Devís-Devís José , Pellicer-Chenoll Maite , Pans Miquel , Pardo-Ibañez Alberto , García-Massó Xavier , Peset Fernanda , Garzón-Farinós Fernanda , Pérez-Samaniego Victor
Published: October 2020

BACKGROUND

The spread of the SARS-CoV-2 virus has transformed many aspects of people’s daily life, including sport, and social networks have been flooded on these issues.

OBJECTIVE

The present study aims to analyse the tweets that were produced relating to sports and COVID-19.

METHODS

From the end of January to the beginning of May 2020, over 4,000,000 tweets on this subject were downloaded through the Twitter search API. Once the duplicates, replicas, and retweets were removed, 119,253 original tweets were analysed. A quantitative-qualitative content analysis was used to study the selected tweets.

RESULTS

Posts dynamics regarding sport and exercise evolved according to the COVID-19 pandemic and subsequent lockdown, shifting from considering sport as a healthy bastion to an activity exposed to disease as any other. The most mediatic professional sporting events received great attention in Twitter while grassroots and women’s sport were relegated to a residual role. The analysis of the 30 topics identified focused on the social, sporting, economic and health impact of the pandemic on sport. Sporting cancellations, leisure time and socialization disruptions, clubs’ bankruptcy, sport training and athletes’ uncertain career development were issues of main concern.

CONCLUSIONS

Although general health measures appeared in the tweets analysed, those addressed to sport practice were relatively scarce. Finally, this study shows the importance of Twitter as a means of conveying social attitudes towards sports and COVID-19 as well as its potential to generate alternative responses in future stages of the pandemic.

CLINICALTRIAL

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A Study on Classroom Feedback and Effectiveness in College English Teaching
Authors: Lyu Na
Published: October 2020

The classroom feedback of English teachers plays an important role in classroom teaching. It is part of the comprehensible input of students and also effectively promotes the language output of students. With the continuous promotion of mixed teaching mode, college English classroom feedback has different characteristics from the original teaching feedback. How to make good use of the feedback of college English class under the mixed teaching mode and improve its effectiveness is a subject that needs to be studied seriously.
“No me cuidan, me violan”: la esfera civil y la protesta feminista
Authors: Cardona Acuña Luz Angela , Arteaga Botello Nelson
Published: October 2020

El objetivo es analizar la competencia discursiva por significar la protesta #NoMeCuidanMeViolan, ocurrida en la Ciudad de México en 2019. Siguiendo la teoría y la metodología de la esfera civil, se analizaron las motivaciones, las relaciones y las instituciones que se imputaron al movimiento en la competencia por su sentido en cinco diarios de circulación nacional. En términos metodológicos, se revisaron 64 columnas periodísticas con el fin de identificar dichas imputaciones. La protesta detonó: 1) un espacio de solidaridad y empatía para enfrentar la violencia contra la mujer; 2) una disputa acerca de la civilidad o incivilidad de las mujeres que participaron en la manifestación; y 3) una disputa frente al desempeño de las instituciones del gobierno. Se concluye que las mujeres traducen demandas de inclusión, solidaridad y membresía civil alterando el orden social. Una limitante del análisis es que deja de lado el papel de las organizaciones feministas en la disputa por el sentido de la marcha. Convendría cubrir esta limitación en futuras investigaciones.
La educación ambiental en instituciones de educación superior del Estado de Chiapas, México
Authors: Ruiz González Rosey Obet , Victorino Ramírez Liberio
Published: October 2020

Actualmente, el sistema educativo mexicano ha reproducido ideologías de un modelo capitalista de producción que busca mercantilizar los servicios de los ecosistemas del planeta, el cual ha originado una problemática socio-ambiental. Las Instituciones de Educación Superior (IES) juegan un papel importante en la formación en materia ambiental para disminuir el deterioro de los ecosistemas y mejorar la calidad de vida de la sociedad. Esta investigación se realizó durante 2015 y 2016 en cuatro IES del estado de Chiapas, combinando métodos cuantitativos y cualitativos para diagnosticar la educación ambiental de estudiantes universitarios inscritos en instituciones públicas. Debido a que los resultados arrojan que los estudiantes carecen de habilidades necesarias para realizar cambios ambientalmente favorables en sus estilos de vida, se infiere que poseen una formación ambiental baja, aunque los estudiantes muestran interés por la temática ambiental, pero el contexto educativo institucional y los intereses del profesorado operan como factores que polarizan el entusiasmo de los estudiantes.
Cuerpos tatuados, “almas” tatuadas: nuevas formas de subjetividad en la contemporaneidad
Authors: Pérez Fonseca Andrea Lissett
Published: October 2020

Este artículo hace una descripción etnográfica contemporánea del tatuaje, desde una perspectiva conceptual que prioriza el sentido de práctica, de las interacciones y de las experiencias vividas durante el proceso de tatuarse. Esta reflexión intenta reconstruir una visión holística del tatuaje que abarca el mundo subjetivo de los actores, así como la dinámica social que hace parte de ese acto. Las principales conclusiones son: El surgimiento de una nueva “normalidad” estética y vivencial en el seno de la sociedad Occidental y la configuración de la nueva subjetividad de los “tatuados”, entendida como un proceso interactivo, innovador, emotivo y reflexivo, en el que el cuerpo se convierte en forma de expresión y construcción del sujeto.
En clave corporal: conocimiento, experiencia y condición humana
Authors: Pedraza Gómez Zandra
Published: October 2020

Este artículo responde al interés de explorar intersecciones en áreas de la investigación social como la antropología, la sociología y la historia y analiza el caso de los estudios del cuerpo en América Latina. Inicialmente, expone la comprensión de la Antropología Histórica sobre el cuerpo; después, muestra la relación intrínseca de conocimiento y ejercicio del poder como vínculo constitutivo de la comprensión y la experiencia del cuerpo, y señala el orden corporal en el que se sitúan algunos de los esfuerzos hechos en la región para afrontar las condiciones corporales de la existencia humana. Por último, estudia formas específicas de la relación entre el cuerpo, como núcleo histórico-antropológico y el poder ejercido sobre él a través de formas particulares de conocerlo, contenidas en el pensamiento latinoamericano.
El discurso sobre el fenómeno de la médium unidad en las religiones afrocubanas
Authors: Von Wangenheim Huberta
Published: October 2020

El propósito de este artículo es examinar el discurso de los(as) practicantes de las religiones afrocubanas de La Habana sobre la médium unidad, una manera particular de percepción que se atribuye a la influencia de espíritus y que juega un papel clave como modo de experimentar el mundo y la realidad en la sociedad cubana. El concepto de la médium unidad como una práctica de percepción sensorial socialmente construida, representa una alternativa a ideas y manejos sociales relacionados con fenómenos semejantes en el contexto occidental-científico, en particular en el marco de la psiquiatría biomédica que los entiende como patologías de carácter alucinatorio. El texto intenta demostrar el papel que la médium unidad juega en la sociedad cubana, mediante la exploración de los discursos religiosos y la descripción de la práctica ritual afrocubana en la que se desarrolla, la que le asigna un significado intersubjetivo y un manejo de amplio reconocimiento social.
https://imsciences.edu.pk/files/journals/vol12_2/New%201%20MA.864.pdf
Authors: Siddique Muhammad , Shoaib Shandana , Jan Zahoor
Published: October 2020

A key aspect of work processes in service sector firms is the interconnection between tasks and performance. Relational coordination can play an important role in addressing the issues of coordinating organizational activities due to high level of interdependence complexity in service sector firms. Research has primarily supported the aspect that well devised high performance work systems (HPWS) can intensify organizational performance. There is a growing debate, however, with regard to understanding the “mechanism” linking HPWS and performance outcomes. Using relational coordination theory, this study examines a model that examine the effects of subsets of HPWS, such as motivation, skills and opportunity enhancing HR practices on relational coordination among employees working in reciprocal interdependent job settings. Data were gathered from multiple sources including managers and employees at individual, functional and unit levels to know their understanding in relation to HPWS and relational coordination (RC) in 218 bank branches in Pakistan. Data analysis via structural equation modelling, results suggest that HPWS predicted RC among officers at the unit level. The findings of the study have contributions to both, theory and practice.
End view of the 71st Annual meeting of the International Society of Electrochemistry, Belgrade Online
Authors: Bajat Jelena , Dekanski Aleksandar
Published: October 2020

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Numerical simulation and experimental verification of stability on multi-cavity spiral cascade heat transfer system
Authors: Liu Haijun , Guo Zhanbin , Zhao Lixin , Wang Xinyu , Lan Shan
Published: October 2020

In order to improve the insufficient effect of heat transfer in pyrolysis carbonization system and reveal the effects of velocity and temperature field of hot flue gas on heat transfer and stability in the biomass, the structure with rectangular groove combined with a spiral baffle is designed to form a multi-cavity spiral cascade heat transfer system. Numerical simulation and experimental verification of stability are carried on multi-cavity spiral cascade heat transfer system. The results show that the hot flue gas with high temperature flows fast at the inlet and outlet, while the flow speed is slow and stable in the cavity of heat transfer. The temperature of hot flue gas reaches the highest at the entrance, and decreases in the heat exchange chamber in a cascade. The spiral inclination angle of 35? and the itch of 1.2 m. The combustion of gas produced by pyrolysis of raw materials can meet the requirement of continuous and stable operation, when the temperature of monitor point 1, 3, 6, and 8 reaches 800?C, 530?C, 250?C, and 200?, respectively. The temperature of hot flue gas changes fluctuate in the range of 15?. The combustion of pyrolysis gas generated during the pyrolysis process of raw materials can ensure the continuous and stable operation of the equipment.
Analysis of rock cracking characteristics during pyrolysis drilling
Authors: Wang Guohua , Tan Jun , Li Chengxiao
Published: October 2020

Thermal jet rock breaking technology refers to the use of high temperature medium such as supercritical water for a rapid local heating of rocks to break the rocks. Because of the low thermal conductivity of the rock matrix, thermal stress will only form on the rock surface. When the temperature stress exceeds the strength of the rock, micro-cracks will appear in the rock, and continue to expand, resulting in the thermal cracking on the rock surface, which will cause the rock surface to fall off from the body and break the rock. Based on thermal-solid coupling theory, a pyrolysis drilling model was established, and the distribution law of temperature field and temperature stress of bottom hole rock during pyrolysis was obtained by using a finite element method. The results show that during the pyrolysis drilling process, the temperature of the heated part of the rock increases rapidly, producing temperature gradients in radial and axial directions. The expansion of the heated volume is affected by compressive stress in the radial direction, buckling in the axial direction and shear stress. This is very important to the field application of pyrolysis drilling.
INVESTIGATION OF SPATIAL AND TEMPORAL VARIABILITY OF CHLOROPHYLL “A” CONCENTRATION IN THE TSIMLYANSK RESERVOIR USING OLCI SATELLITE IMAGES (2016–2019)
Authors:   Southern scientific center of the Russian Academy of Sciences, Saprygin V.V. , Kleshchenkov A.V. ,   Southern scientific center of the Russian Academy of Sciences, Korshun A.M. ,   North Caucasus Branch of Moscow Technical University of Communications and Informatics
Published: October 2020

The spatial and temporal distribution of chlorophyll “a” concentration in the Tsimlyansk reservoir in the modern period was analyzed using an algorithm developed at the SSC RAS based on satellite images of the OLCI scanner for the period 2016–2019 and data from field research. The latest data was compared with the period 2003–2012 covered by the MERIS satellite scanner survey. According to satellite imagery in the water area of the Tsimlyansk reservoir for 2003–2012 and 2016–2019, two annually recurring peaks of phytoplankton development in the dam and central areas can be distinguished: spring, associated with the bloom of diatoms and summer-autumn, due to the rapid development of blue-green algae. It was found that the seasonal dynamics of chlorophyll a concentration in the central and near-dam areas of the reservoir in the modern period has not undergone significant changes in comparison with 2003–2012. However, in the upper region of the reservoir, the seasonal dynamics of chlorophyll a concentration in the modern period has become very similar to that in the central region. At the same time, the average concentration of chlorophyll a has increased significantly, which may indicate a change in the hydrological regime of the reservoir
THE USING OF GIS TOOLS IN THE STUDY SOCIO-ECOLOGICAL AND ECONOMIC WELL-BEING OF THE REGIONS OF SIBERIA AND THE FAR EAST
Authors:   Institute of Natural Resources, Ecology and Cryology SB RAS, Transbaikal State University, Chita, Zabelina I.A.
Published: October 2020

This paper presents the results of a comparative spatial analysis of socio-ecological and economic well-being for the Russian regions of the Far East and Siberia. We use a multiplicative model, based on the A. Sen extended function. It include GRP per capita, share of personal incomes in GRP, cost of living index in the region, intra-regional income inequality and the integrated environmental index (it is defined as the arithmetic mean of the environmental indices calculated on the basis of the indicators: share of the negative water, air and soil tests). Calculations revealed that a high level of social welfare obtained on the basis of the four-component multiplicative model (i.e. without taking into account the environmental factor) is observed in the Chukotka Autonomous Area, Magadan and Sakhalin Regions. The inclusion of the environmental component in the comprehensive assessment of the regional development had a significant impact on the level of social well-being. In most of analyzed regions, the ecologically adjusted characteristic was significantly lower than the indicator obtained on the basis of the four-component multiplicative model. The most significant difference is observed in the Primorye Territory (51 %), Jewish Autonomous Region and Omsk Region (25 %), which is significantly higher than the average level for the Russian Federation – 16 %. The analysis results can be used in the development of management decisions in environmental and economic interactions, as well as in the preparation of strategic planning documents
USING REANALYSIS DATA FOR RESEARCHING THE ICE COVER OF THE SEA OF AZOV
Authors:   Federal Research Center Southern Scientific Centre of the Russian Academy of Sciences, Rostov-on-Don, Russia, Magaeva A.A. ,   Institute of Earth Sciences SFU, Rostov-on-Don, Russia
Published: October 2020

The article presents an analysis of the results of the OSI-450 reanalysis as an alternative data source for the study of the ice cover of the Azov Sea. OSI-450 is the second major version of the OSI SAF Global Sea Ice Concentration Climate Data Record (CDR). The OSI-450 product is available for the period 1979 to 2015.Using licensed software ArcGIS 10.*, a model for data processing was created. The average long-term value of the ice cover for the period 2000–2015 according to the OSI-450 reanalysis data is 23.3 %, according to GIS data – 37.2 %; the maximum and minimum values are 43 % / 69.4 % and 8.2 % / 8 %, respectively. The correlation coefficient with the sum of average monthly air temperatures is minus 0.87 (air temperature for the winter season is a main factor that determines the ice conditions of the Sea of Azov). It is shown that the OSI-450 reanalysis data underestimate the ice extent for the season, but on the whole reproduces the long-term dynamics of the ice cover for the period under consideration. Based on the study, it was concluded that the OSI-450 reanalysis can act as an alternative source of data on the state of the ice cover, but taking into account correction factors.
GEOGRAPHY OF THE TREES DENSITY IN OPEN WOODLANDS THAT ARE FORMED ON THE TERRITORY OF THE EROSIONAL NETWORK IN THE BELGOROD REGION
Authors:   Belgorod National Research University, Ukrainskiy P.A. , Terekhin E.A. ,   Belgorod National Research University
Published: October 2020

Over the past two decades, in the Belgorod region there has been a spread of woody vegetation along the erosional network. One of the forms of this process is the formation of open woodlands. In this work, we research the density of trees in such light forests. On the territory of the Belgorod region, we chose 200 sites with an area of 1 ha each. We mapped trees inside the sites using mosaics of satellite images Google Map. For this, we used the QGIS program and the plugin Quick Map Services. Based on these data, by interpolation, maps of changes in the density of trees in open woodlands were constructed. To show local variation, interpolation by the method of inverse-weighted distance is used. To identify trends at the subregional and regional level, we applied smoothing interpolation (based on a locally weighted mean according to the Nadaraya-Watson formula.) with a bandwidth of 20 and 50 km, respectively. We performed the interpolation in the environment for statistical computing R using an additional spatstat package. Among 200 plots, tree density ranged from 21 to 415 pcs / ha. On average, it was equal to 111.2 pcs / ha. At the local level, there are no clearly visible patterns. At the subregional level, alternation occurs when moving from west to east areas with increased and reduced density of trees open woodlands. At the regional level, there is a decrease in tree density when moving from the northwest to the southeast.
USING MEDIUM RESOLUTION SATELLITE REMOTE SENSING DATA FOR COASTLINE DETECTION AND INTERPRETATION
Authors:   St Petersburg State University, Volynets E.I. , Volynetc A.V. ,   St Petersburg State University, Panidi E.A.
Published: October 2020

Remote sensing data are widely used in coastal zones monitoring, since they provide radiometric information with the possibility to automate the data processing. Due to the lack of high resolution satellite images in free access using the medium resolution satellite images is widespread. The study is dedicated to the development of a coastline detection method based on medium resolution satellite images. It is proposed to use a semi-automatic method based on uncontrolled classification of a mid-resolution image by water indices, followed by expert refinement of classes and the use of machine learning methods. The shorelines of the eastern part of the Gulf of Finland have been extracted from Landsat 8 Level-2 image, using proposed method. The position accuracy of the generated shorelines has been analyzed using manually digitized shoreline from high-resolution image Resurs-P1 processing level 2А. The results showed that in the test areas the best output for extracting the coastline are given by the MNDWI with a fixed threshold value equal to zero. The Random Forest machine learning algorithm was used to refine the type of coastline, especially in wetlands where water indices showed poor accuracy. The study showed a significant increase in the position accuracy with the use of the algorithm. However, the accuracy of manually classified wetlands for training the model has a significant impact on the result.
ACADEMICIAN I. I. VOROVICH – INITIATOR AND CO-LEADER OF WORK ON CREATION OF AN IMITATION MODEL OF THE ECOSYSTEM OF THE SEA OF AZOV
Authors:   Southern Federal University, Rostov-on-Don, Surkov F.A.
Published: October 2020

Among the mathematical models of marine ecosystems, the simulation model of the Sea of Azov occupies a special place both in terms of the time of creation, and in the detail and adequacy of the description of the ecosystem, and in recognition in the scientific community. The preconditions for the emergence of the idea of system analysis and modeling of the ecosystem of the Sea of Azov, associated with a catastrophic decline by the beginning of the 70s of the last century, of its former record fish productivity are described. The main stages of creating a model are described, the provision of the created models with primary information of field observations over the components of the ecological system of the sea, carried out for 20–40 years by employees of the Azov Research Institute of Fisheries (AzNIIRKh). The choice of the environmental factors taken into account, the ecosystem components taken into account, is substantiated, the blocks of the model are listed, the interaction of which is the reproduction of the functioning of the ecological system of the sea. The reasons for choosing the time step are presented, the technology of conducting simulation experiments with the model is described. It was noted that a comprehensive testing of the intermediate results of modeling the ecosystem of the Sea of Azov was carried out at numerous scientific seminars and conferences, including the annual All-Russian conference “Mathematical Modeling in Problems of Environmental Management” established in 1973 and continuing to this day. The main scientific and practical results obtained are described, including the formulation of the generalized Le Chatelier – Brown principle for the Sea of Azov ecosystem, the definition of the concepts of “critical surfaces” and “critical modes” in the parameter space of the ecosystem model. The reactions of the ecosystem to disturbances of the tuning parameters are analyzed, the principle of localization of disturbances is formulated, the ecosystem of the Sea of Azov was considered as a control system
ANALYSIS OF CHANGES IN VEGETATION COVER FOR NORTHERN PART OF UVS NUUR BASIN
Authors:   Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, Golubyatnikov L.L. , Zarov E.A. ,   Yugra State University, Khanty-Mansiysk
Published: October 2020

To analyze changes in the vegetation cover on the territory of the Russian part of the Uvs Nuur Basin the images from the Landsat-5 and Landsat-8 satellites for the summer periods of 1988 and 2019 were used. Satellite images were processed in the GRASS geographic information system using the SMAP classification method. The Uvs Nuur Basin is located on the border of the Republic of Tuva and Mongolian People’s Republic. The region is characterized by a sharply continental climate with low snowy winters, hot and dry summers. A mosaic landscape structure of typical, dry and desert steppes is presented on the flat territory of the northern part of the Uvs Nuur Basin. Based on satellite information and the cartographic information, 9 landunits were identified in the studied territory of the Uvs Nuur Basin. According to the satellite images, the total area of the Russian part of the Uvs Nuur Basin is 19.5 thousand km2 . Changes in the areas of the selected landunits are estimated as a result of the satellite images classification. From the obtained results it was found that over the past 30 years, the area of cultivated fields in the northern part of the Uvs Nuur Basin has decreased by 80 %. Steppe vegetation is gradually occupying the abandoned arable lands. Desertification processes are ongoing in the Uvs Nuur Basin territory. There was a reduction in the area of meadows and an expansion of the territories of dry and desert steppes with the participation of shrubs of Caragana Bunge.