bluuebunny/crossref_metadata_2025 huggingface dataset:
Influências teóricas de Jürgen Habermas na ciência da informação indexada na BRAPCI
Authors: Gabriel Junior Rene Faustino , Bufrem Leilah Santiago , Lima Marcia Heloisa Tavares de Figueredo
Published: March 2021

Parte do reconhecimento do filósofo alemão Jürgen Habermas, pertencente à segunda geração de Escola de Frankfurt, participante da tradição da teoria crítica e do pragmatismo, considerando sua importância não só nos estudos de informação, como em outros domínios.  Tem como objetivo assinalar sua presença material via base de dados BRAPCI a fim de mapear em uma série de pesquisas, as influências das reflexões deste filósofo.  Para este fim, nesta fase, utiliza a metodologia dos Estudos Métricos da Informação com análises dos textos completos dos artigos indexados na Brapci. O resultado recupera os primeiros trabalhos indexados na BRAPCI produzidos no Brasil e fora dele; diagnostica a maior concentração de frequência em razão de um congresso (?) publicado na Revista “Comunicação & Informação” e na Revista Logeion; apresenta uma prevalência de pesquisadores no núcleo do IBICT/UFRJ e UNIRIO que mais foram influenciados por Habermas, estabelecendo uma reflexão sobre a rede de influências derivadas de orientações de Maria Nélida González de Gómez e identifica a obra mais citada “Mudança estrutural da esfera pública” a qual deverá ser o ponto de partida para a continuidade das reflexões sobre a presença do autor na literatura em CI no Brasil. Conclui apresentando uma série de questões desdobradas a partir desses resultados iniciais.
Immune Checkpoint Inhibitors in the Treatment of Cancer
Authors: Zam Wissam , Ali Lina
Published: March 2021

Background:

Immunotherapy drugs, known as immune checkpoint inhibitors (ICIs),
work by blocking checkpoint proteins from binding with their partner proteins. The two main pathways
that are specifically targeted in clinical practice are cytotoxic T-lymphocyte antigen-4 (CTLA-
4) and programmed cell death protein 1 (PD-1) that showed potent immune-modulatory effects
through their function as negative regulators of T cell activation.

Methods:

In view of the rapid and extensive development of this research field, we conducted a
comprehensive review of the literature and updated on the use of CTLA-4, PD-1, and PD-L1 targeted
therapy in the treatment of several types of cancer, including melanoma, non-small-cell lung carcinoma,
breast cancer, hepatocellular carcinoma, Hodgkin lymphoma, cervical cancer, and head
and neck squamous cell carcinoma.

Results:

Based on the last updated list released on March 2019, seven ICIs are approved by the
FDA, including ipilimumab, pembrolizumab, nivolumab, atezolizumab, avelumab, durvalumab,
and cemiplimab.

Conclusion:

This review highlighted the most common adverse effects caused by ICIs which affect
people in different ways.
ADHD WITH NON-ORGANIC ENURESIS AND BORDERLINE INTELLIGENT QUOTIENT
Authors:   Department Psychiatry Brawijaya University, Putri Frilya , Yosef Herman ,   Clinic IHC Bentoel Karanglo Malang
Published: March 2021

Symptoms of Attention Deficit Hyperacitivity Disorder (ADHD) can be associated with nocturnal enuresis. Nocturnal enuresis cases are common occur in children with Mental Retardation. There are several hypotheses underlying this comorbidity, such as genetic, neurophysiological, environmental and psychosocial factors. We report the case of a 7 year old boy with symptoms such as inability to concentrate, active movement, talk a lot, unable to wait his turn, unable to delay desires, easy fighting and behaving and speaking harshly. Patients still wet the bed at night at least 3-4 times a week The Abbreviated Conners Score rating scale assessed by the mother at the start of treatment was 21. The IQ test score was 71 and the Strength and Difficulty Questionnaire (SDQ) score was 35. The patient's symptoms were reduced after 4-month therapy with 2x5mg of methylphenidate administration, psychoeducation of parents to implement toilet training and behavior therapy for patients, apply reward and punishment with the principle of token economy. In the development process of children and adolescents, parenting is an important factor. Many studies shows that parenting can impact the resilience and vulnerability of a child to behavioral disorders. In children with ADHD with borderline IQ and enuresis, parenting with a high parental control component can cause psychological symptoms to worsen without being balanced with the attitude of parents who are responsive to the psychological needs of the child.
MASS THERAPEUTIC EDUCATION FOR MONITORING SUICIDAL BEHAVIOR IN COMMUNITY
Authors:   Medical Faculty Brawijaya University, Sofyan Fadhillah
Published: March 2021

Background: Suicide is a worrying problem in Indonesia because of increase in case reported. There has been an increase in suicide rates both globally and in Indonesia. The negative stigma, lack of education, and lack of understanding of the role of the community make it difficult to reduce the number of suicides. This study aims to discuss mass therapeutic education for monitoring suicidal behavior in community. Method: Researchers used 15 journals and literature that discuss the impact and vulnerability of distance learning on students' mental health conditions. Conclusion: The role of society in reducing the suicide rate is very much needed. The community can help make early detection of suicide. Society can help prevent suicidal ideas from arising in those around them. The public can provide information to the authorities and give advice for suicide perpetrators to visit a health center. The role of the community can be integrated in a structured and neat system that can make suicide prevention efforts become optimal.
IMPACT AND VULNERABILITY OF DISTANCE LEARNING ON THE MENTAL HEALTH CONDITIONS OF STUDENTS
Authors:   Medical Faculty Brawijaya University, Aditya Raden
Published: March 2021

Background: Since the first cases of COVID-19 were discovered, various countries have sought various methods and ways to deal with the pandemic. Some adaptations also need to be made to avoid further adverse effect, such as lockdown which has an impact in learning for all students around the world.. The face-to-face or offline learning system that has been applied as a learning method has also been changed to a distance or online lerning method. This has the potential to have a negative impact on the mental health of students . This study aims to discuss the impact and vulnerability of students to distance or online learning methods. Method: Researchers used 15 journals and literature that discuss the impact and vulnerability of distance learning on students' mental health conditions. Conclusion: Distance or online learning is one of the methods to reduce the spread of covid, but this has a negative impact on mental health especially on the students. The effects experienced by students include anxiety, mild to severe stress, social media fatigue, and depression. The things that underlie this impact have several factors such as unfamiliarity and time needed for adaptation , the ability to use technology, a heavy burden of responsibility, and concerns about the economic burden of parents to finance learning activities. In this pandemic condition, efforts from all parties are needed so that the bad impact on the mental health of students can be minimized.
Measuring industry employment, 1990–2018: a look at the auxiliary-unit concept
Authors: Robertson Kenneth
Published: March 2021

The North American Industry Classification System (NAICS) replaced the Standard Industrial Classification (SIC) system in 1997. Since the change, some analysts have expressed concerns about the elimination in NAICS of the concept of auxiliary units, which are now classified with other worksites that perform similar functions. This article examines how employment trends by broad industry groups would have differed over the past few decades if the auxiliary-unit concept had been used to estimate employment in those units as it was in the SIC system.
AIR QUALITY INDEX PREDICTION IN BESIKTAS DISTRICT BY ARTIFICIAL NEURAL NETWORKS AND K NEAREST NEIGHBORS
Authors: BARAN Burhan
Published: March 2021

In this study, Air Quality Index (AQI) in Besiktas was intended to be predicted by Artificial Neural Networks (ANN) and k Nearest Neighbors (kNN) algorithms. For this purpose, eight parameters have been selected which may affect the AQI. These parameters are PM10, SO2, CO, O3, temperature, humidity, pressure and wind speed, respectively. 124 data for 2015, 2016, 2017 and 2018 January, which includes eight parameters, were determined as training data. The first 14-day data of January 2019 were determined as test data. Similarly, the first 14-day data of January, March and December of 2018 were used as test data. In addition, The first 14-day data for January 2019 were normalized and set as test data. The success of ANN and kNN were measured by comparing. Performance rate of ANN with raw data for January 2018 was 85.71%, for March 2018 was 71.43%, for December 2018 was 78.57%. Both with raw and with normalized data for January 2019 was 85.71% performance rate. Performance rate of kNN with raw data for January 2019 was 92.86%, for March 2018 was 28.57%, for December 2018 was 71.43%. Performance rate of kNN with normalized data for January 2019 was 92,86%.
TEMİZLİK ÇALIŞANLARININ ÇALIŞMA POZİSYONLARININ BAUA YÖNTEMİ İLE İNCELENMESİ: GIDA ÜRETİM FABRİKASI ÖRNEĞİ
Authors: ÖZCAN Gülçin , ENSARİ ÖZAY Müge
Published: March 2021

Gıda üretim fabrikalarında yapılan temizlik işlerinde kaldırma, indirme, itme-çekme gibi işlerde oluşan uygunsuz çalışma pozisyonlarına bağlı olarak çalışanlarda kas iskelet sistemi hastalıkları meydana çıkabilmektedir. Araştırma kapsamında gıda üretim fabrikasında çalışan temizlik işçilerinin duruş pozisyonları BAUA yöntemi kullanılarak analiz edilmiştir. BAUA risk analizi metodunda yapılan işin türü, süresi ve iş yapılma esnasındaki fiziki özellikler ön plandadır. 1 ay süresince fabrikada tüm temizlik işleri izlenerek, hatalı duruş oluşturabilecek 101 adet fotoğraf çekilmiştir. 101 adet fotoğraf içerisinden, 5 tanesi manuel yapılan işler, 3 tanesi kaldırma işleri ve 4 tanesi itme-çekme işleri olarak iş bazından en uygun olan toplamda 12 adet çalışma pozisyonu seçilmiştir. Analiz sonuçlarına göre manuel yapılan işlerde risk seviyesinin daha yüksek olduğu, itme-çekme işlerinin orta riskli ve kaldırma işlerinin daha az riskli olduğu tespit edilmiştir. Temizlik çalışanlarının uygun fiziki duruşlarda çalışması, çalışma ortamındaki ergonomik risklerin giderilmesi, kas iskelet sistemi hastalıklarının azaltılması ve önlenmesi konularında önerilerde bulunulmuştur.
ZIMPARA TAŞI İÇEREN CEVHER ALANINA AİT MANYETİK VERİLERİN SINIR ANALİZİ YÖNTEMLERİ İLE DEĞERLENDİRİLMESİ: MUĞLA, TÜRKİYE ÖRNEĞİ
Authors: ÖKSÜM Erdinç , DOLMAZ M. Nuri , DEMİR Muhterem , PHAM Luan
Published: March 2021

Doğal zımpara taşları çoğunlukla Türkiye’de Ege bölgesinde ve Yunanistan’da görülür. Türkiye’nin batısında yer alan Menderes Masifi demir bakımından zengin zımpara taşı yatakları içermektedir. Önemli zımpara taşı yataklarından biri, GB Türkiye’de Milas’ın KB da yer alan Kayabaşı köyü güneyinde görülmektedir. Zımpara taşları bünyesinde çoğunlukla alüminyum ve demir mineralleri içerdiği için ölçülebilir manyetik anomalilere neden olabilmektedir. Bu çalışma, Kayabaşı Köyü GB’da yer alan bir maden sahasının 150 x 200 m boyutlarında lokal bir bölgesinde potansiyel zımpara taşı kaynaklarının yer altındaki konumlarının ve devamlılıklarının araştırılmasını amaçlamaktadır. Bu amaç doğrultusunda inceleme sahasında jeofizik potansiyel alan verilerinden olan manyetik alan verilerinin ölçümleri gerçekleştirilmiştir. Çalışma sahasının manyetik anomalilerine kaynak olan yapıların konumlarının tespiti için sınır analizleri kapsamında analitik sinyal, yatay türevlerin analitik sinyali, toplam yatay gradyanın tilt açısı ve yatay gradyanın lojistik fonksiyonu esasına dayanan dört farklı analiz tekniği uygulanmıştır. Elde edilen sınır analizleri haritalarının birlikte yorumlanması ile inceleme alanının doğusunda genel olarak sığ kaynaklı yapısal unsurların, batısında ise göreceli olarak daha derin kaynaklı yapısal unsurların varlığı gözlemlenmiştir.
STATİK YÜKLÜ RADYAL KAYMALI YATAKLARDA HİDRODİNAMİK YAĞLAMANIN ANALİZİ
Authors: ÖNCÜ Güler , DURAK Ertuğrul
Published: March 2021

Hidrodinamik yağlamalı kaymalı yataklarda basınç dağılımı, sürtünme katsayısı, yağ film kalınlığı, yağ debisi, vb. gibi değerler yatak tasarımı ve optimum enerji verimliliği açısından büyük öneme sahip tasarım kriterleridir. Bu çalışmada basınç dağılımını ifade eden Reynolds Yağlama Diferansiyel denklemi sonlu farklar metodu ile çözülerek her bir basınç noktası için iteratif çözüm yapılmıştır. Çalışmada kurgulanan algoritma ile muylu hızını değişimi ile basınç değeri, yağlayıcı katman kalınlığı, sürtünme katsayısı ve yatak kapasitesi belirlemek mümkündür. Hazırlanan MATLAB programı ile elde edilen sonuçlar benzer çalışmalarla kıyaslanmıştır.
Understanding the Role of Social Media–Based Mental Health Support Among College Students: Survey and Semistructured Interviews
Authors: Vornholt Piper , De Choudhury Munmun
Published: March 2021

Background

Mental illness is a growing concern within many college campuses. Limited access to therapy resources, along with the fear of stigma, often prevents students from seeking help. Introducing supportive interventions, coping strategies, and mitigation programs might decrease the negative effects of mental illness among college students.

Objective

Many college students find social support for a variety of needs through social media platforms. With the pervasive adoption of social media sites in college populations, in this study, we examine whether and how these platforms may help meet college students’ mental health needs.

Methods

We first conducted a survey among 101 students, followed by semistructured interviews (n=11), of a large public university in the southeast region of the United States to understand whether, to what extent, and how students appropriate social media platforms to suit their struggle with mental health concerns. The interviews were intended to provide comprehensive information on students’ attitudes and their perceived benefits and limitations of social media as platforms for mental health support.

Results

Our survey revealed that a large number of participating students (71/101, 70.3%) had recently experienced some form of stress, anxiety, or other mental health challenges related to college life. Half of them (52/101, 51.5%) also reported having appropriated some social media platforms for self-disclosure or help, indicating the pervasiveness of this practice. Through our interviews, we obtained deeper insights into these initial observations. We identified specific academic, personal, and social life stressors; motivations behind social media use for mental health needs; and specific platform affordances that helped or hindered this use.

Conclusions

Students recognized the benefits of social media in helping connect with peers on campus and promoting informal and candid disclosures. However, they argued against complete anonymity in platforms for mental health help and advocated the need for privacy and boundary regulation mechanisms in social media platforms supporting this use. Our findings bear implications for informing campus counseling efforts and in designing social media–based mental health support tools for college students.
Behavior Change Techniques in Popular Mobile Apps for Smoking Cessation in France: Content Analysis
Authors: Bustamante Luz Adriana , Gill Ménard Cédric , Julien Sabrina , Romo Lucia
Published: March 2021

Background

The mobile app market differs from country to country, and to date, no previous review of the content quality of smoking cessation apps has been conducted in France.

Objective

This study aimed to examine the general quality of the most popular smoking cessation apps in France and also determine the degree to which apps adhere to established behavioral and cognitive techniques (BCTs) proven effective in clinical practice.

Methods

A systematic research of smoking cessation apps was conducted in both the Google Play Store and Apple Store in the French market. The general quality of popular apps was rated with the Mobile App Rating Scale (MARS), and the therapeutic quality was assessed with the ratio of adherence of the behavior change technique taxonomy for smoking cessation treatment.

Results

A total of 14 mobile apps met all the inclusion criteria of the content analysis. The interrater reliability varied from “substantial” (0.79) to “almost perfect” (0.9) for the two measures. The mean MARS score was 3.5 out of 5 (median 3.6, IQR 0.6 [3.2-3.8]). The findings suggest that popular apps focus primarily on the functionality dimension of the MARS scale (4.2/5). The mean number of BCTs was 22, with a large difference between apps (minimum 4, maximum 38). At least half of the apps addressed motivation (8.8/14, 63%) and advised on using behavioral skills in order to quit smoking or stay a nonsmoker (8.7/14, 62%). However, only a handful of apps gathered important information (5.9/14, 42%) in order to deliver proper advice regarding the use of approved medication or the implementation of behavioral techniques (4.3/14, 31%). The mean MARS score was positively correlated with the price (r=0.70, P=.007) and the number of BCTs used (r=0.67, P=.01). User rating was not correlated with any quality scale (P=.67).

Conclusions

The content quality of popular smoking cessation apps in France varied by app type and price. Most popular apps propose in general good quality content but lack implementation of evidence-based BCTs associated with effectiveness on smoking cessation treatment. Further research is needed to evaluate the improvement in the content quality of smoking cessation apps in France.
Spatial-Temporal Relationship Between Population Mobility and COVID-19 Outbreaks in South Carolina: Time Series Forecasting Analysis
Authors: Zeng Chengbo , Zhang Jiajia , Li Zhenlong , Sun Xiaowen , Olatosi Bankole , Weissman Sharon , Li Xiaoming
Published: March 2021

Background

Population mobility is closely associated with COVID-19 transmission, and it could be used as a proximal indicator to predict future outbreaks, which could inform proactive nonpharmaceutical interventions for disease control. South Carolina is one of the US states that reopened early, following which it experienced a sharp increase in COVID-19 cases.

Objective

The aims of this study are to examine the spatial-temporal relationship between population mobility and COVID-19 outbreaks and use population mobility data to predict daily new cases at both the state and county level in South Carolina.

Methods

This longitudinal study used disease surveillance data and Twitter-based population mobility data from March 6 to November 11, 2020, in South Carolina and its five counties with the largest number of cumulative confirmed COVID-19 cases. Population mobility was assessed based on the number of Twitter users with a travel distance greater than 0.5 miles. A Poisson count time series model was employed for COVID-19 forecasting.

Results

Population mobility was positively associated with state-level daily COVID-19 incidence as well as incidence in the top five counties (ie, Charleston, Greenville, Horry, Spartanburg, and Richland). At the state level, the final model with a time window within the last 7 days had the smallest prediction error, and the prediction accuracy was as high as 98.7%, 90.9%, and 81.6% for the next 3, 7, and 14 days, respectively. Among Charleston, Greenville, Horry, Spartanburg, and Richland counties, the best predictive models were established based on their observations in the last 9, 14, 28, 20, and 9 days, respectively. The 14-day prediction accuracy ranged from 60.3%-74.5%.

Conclusions

Using Twitter-based population mobility data could provide acceptable predictions of COVID-19 daily new cases at both the state and county level in South Carolina. Population mobility measured via social media data could inform proactive measures and resource relocations to curb disease outbreaks and their negative influences.
Comparative Success of Recruitment Strategies for an Exercise Intervention Trial Among Women With Polycystic Ovary Syndrome: Observational Study (Preprint)
Authors: Benham Jamie L , Booth Jane E , Friedenreich Christine M , Rabi Doreen M , Sigal Ronald J
Published: March 2021

BACKGROUND

Effective and efficient participant recruitment is a key determinant of the success of a research program. Previously reported recruitment strategies have displayed variable success rates in studies on women with polycystic ovary syndrome (PCOS).

OBJECTIVE

This study aimed to evaluate the effectiveness and cost per participant of the recruitment strategies that we used in a prospective randomized controlled trial to examine the effects of exercise training among inactive women with PCOS, who are aged 18-40 years.

METHODS

The 4 recruitment methods we used were as follows: (1) referral by health care providers or by word of mouth, (2) media (eg, local newspaper stories and radio interviews), (3) Facebook advertisements, and (4) unpaid advertisements including posters and websites. The proportions of potential, eligible, and enrolled participants recruited with each method were determined and compared using tests of proportion. The time investment and cost per participant enrolled were calculated for each recruitment strategy.

RESULTS

Of 200 potential participants screened, 98 (49%) were recruited from unpaid advertisements (posters and websites), 70 (35%) from Facebook advertisements, 16 (8%) by referral, and 16 (8%) from traditional media (newspaper and radio). Every potential participant was recruited from separate means (ie, no participant was approached through more than one recruitment method). A total of 109 (54.5%) women were deemed eligible for participation in the trial, and 60 (30.0%) were enrolled. The proportion of potential participants who completed the trial was higher for those recruited from traditional media than from Facebook advertisements (n=7/16, 44% vs n=13/70, 19%, respectively; P=.03) or unpaid advertisements (n=7/16, 44% vs n=13/98, 13%, respectively; P=.002). The cost per participant was Can $18.21 for Facebook advertisements and Can $43.88 for unpaid advertisements. There were no direct trial costs for referrals or traditional media.

CONCLUSIONS

For this trial, each method was important for recruiting inactive women with PCOS because no participant reported learning about the trial through more than one method. Unpaid advertisements and Facebook advertisements helped recruit the largest number of participants in the trial, the former resulting in a higher cost per participant than the latter.

CLINICALTRIAL

ClinicalTrials.gov NCT03362918; https://clinicaltrials.gov/ct2/show/NCT03362918
Peer Review of “Forecasting the COVID-19 Pandemic in Saudi Arabia Using a Modified Singular Spectrum Analysis Approach: Model Development and Data Analysis” (Preprint)
Authors:   Anonymous Reviewer
Published: March 2021

UNSTRUCTURED

This is an anonymous peer review report.
Author’s Responses to Peer Reviews of “Forecasting the COVID-19 Pandemic in Saudi Arabia Using a Modified Singular Spectrum Analysis Approach: Model Development and Data Analysis” (Preprint)
Authors: Alharbi Nader
Published: March 2021

UNSTRUCTURED

This is author responses.
Keragaman Konsumsi Pangan Rumah Tangga di Provinsi Jawa Tengah
Authors: Dewanti Sukmasari
Published: March 2021

Provinsi Jawa Tengah adalah salah satu provinsi dengan ketersediaan pangan yang cukup baik ditandai dengan kontribusinya sebagai salah satu lumbung pangan nasional yang menghasilkan berbagai jenis pangan, seperti padi, jagung, ubi kayu, kacang tanah, kedelai, dan kacang hijau. Meskipun demikian, hal itu tidak membuat provinsi ini terbebas dari persoalan pangan. Salah satu persoalan pangan yang dihadapi Provinsi Jawa Tengah adalah konsumsi kalori yang masih di bawah angka nasional pada tahun 2017 dan konsumsi pangan yang belum beragam. Konsumsi pangan yang terlalu bertumpu pada jenis pangan tertentu dikhawatirkan akan mengganggu stabilitas ketahanan pangan. Penelitian ini bertujuan untuk menganalisis keragaman konsumsi pangan, variasi keragaman konsumsi pangan antar wilayah ekskeresidenan; faktor sosial demografi dan ekonomi yang memengaruhi keragaman konsumsi pangan rumah tangga; serta menganalisis hubungan tingkat keragaman konsumsi pangan dengan tingkat ketahanan pangan di Provinsi Jawa Tengah. Penelitian ini menggunakan data bersumber dari Survei Sosial Ekonomi Nasional (Susenas) Maret 2018 yang dianalisis menggunakan analisis deskriptif dan analisis inferensia menggunakan regresi logistik biner. Hasil penelitian menunjukkan bahwa kondisi keragaman konsumsi pangan di Provinsi Jawa Tengah tahun 2018 sudah cukup baik yang tercermin dari skor pola pangan harapan mencapai 89,07. Konsumsi padi-padian dan minyak & lemak sudah melebihi kondisi ideal. Selain itu, terdapat vasiasi keragaman konsumsi pangan pada keenam wilayah ekskeresidenan di Jawa Tengah. Analisis regresi logistik biner menyimpulkan jenis kelamin, umur, tingkat pendidikan kepala rumah tangga, jumlah anggota rumah tangga, status daerah tempat tinggal dan pendapatan perkapita rumah tangga memengaruhi keragaman konsumsi pangan. Keragaman konsumsi pangan dan ketahanan pangan rumah tangga terbukti memiliki hubungan positif dan signifikan
Online Teaching in Higher Education during COVID-19 Pandemic
Authors: Panev Ida
Published: March 2021

The whole world population witnesses changes that are happening due to COVID-19 pandemic. One of the greatest changes is shown in the manner of conducting the educational process that has been transferred from traditional onsite to online. This paper analyses what are advantages and what are disadvantages of online teaching in higher education in Croatia, but it is applicable to all levels of education system. As approximately one year has passed since first lockdown and consequently closing all educational institutions, some experience is gained. This paper will try to systematize most of the findings that practice of online education has shown. In a few words, some advantages of quality online teaching are: low expenses, timesaving, learning at one’s own pace, motivation, communication, attention etc. Disadvantages of online teaching are: lack of social face-to-face contact, extreme exposure to screens, all sorts of distractions due to inappropriate work environment, inadequate technical equipment, lack of digital skills etc. Although the key role is on the teachers as creators of the educational process, students, as participants of the process, should also make an effort to adjust and embrace new ways of teaching and learning. Both teachers and students should express their opinions and all sorts of needs, to take the best out of online education during a pandemic.
МЕХАНИЗМЫ ФОРМИРОВАНИЯ ТОКОПРОВОДЯЩИХ КАНАЛОВ В МЕМРИСТОРАХ РАЗНОГО ТИПА И УСЛОВИЯ ИХ СТАБИЛЬНОЙ РАБОТЫ
Authors: Алёшин А.Н. , Зенченко Н.В. , Рубан О.А.
Published: March 2021

Рассмотрены механизмы формирования токопроводящих каналов в мемристорах на базе оксидов переходных металлов и твердых электролитов, в основе которых лежат процессы переноса заряженных кислородных вакансий (в оксидах переходных металлов) или ионов активного электрода (в твердых электролитах) в условиях, определяемых сильными электрическими полями, обусловленными наноразмерными эффектами.
EDUCATIVE ASPECTS OF DOPING PREVENTION IN SCHOOL-AGED CHILDREN AND ADOLESCENTS
Authors: Stojanović Emilija , Radovanović Dragan
Published: March 2021

The aim of this study was to provide an overview of doping prevention strategies in school-aged children and adolescents. To preserve the spirit of sport, the Anti-Doping Code requires that each anti-doping organization should develop and implement education and prevention programs for athletes, including the young and support staff. Education programs that encourage respect, equity, and inclusion, are closely related to fairness and should be implemented in school-aged children. The focus on school-aged children is essential, since early adolescence is a critical stage associated with a distorted body image (muscle dysmorphia), which in turn can lead to deliberate use of prohibited substances (mostly androgenic anabolic steroids) or methods. Since adolescents are focused on the "here" and "now", the conception of anti-doping programs should emphasize the adverse effects of doping at the early stage of use, as well as a high probability of health consequences. Encouraging prevention should raise awareness of the recipients about adverse effects, which in turn should produce anti-doping behavior. Moreover, the goal of preventive actions should be the development of self-esteem, which equals the observance of rights and values of other people, and the ability to refuse through the strategy termed "A way to say: No".
PHYSICAL ACTIVITY LEVELS IN PHYSICAL EDUCATION TEACHERS BEFORE AND DURING SCHOOL SUSPENSION BROUGHT BY THE COVID-19 QUARANTINE
Authors: Hall-López Javier Arturo
Published: March 2021

The aim of this paper was to compare the physical activity (PA) levels in physical education (PE) teachers before and during school suspension brought by the COVID-19 quarantine. Thirty-seven PE teachers participated in the descriptive cross-sectional comparative methodological design study. In order to evaluate the PA levels, the International Physical Activity Questionnaire (IPAQ) was applied. As a statistical method, the equality of variance was calculated using the Student t test for independent samples. The results revealed less total PA MET-minutes/week in PE teachers (p=.005), with a percentage difference of 69.8 Δ%, during the COVID-19 quarantine compared to the state before the COVID-19 pandemic. PE teachers are considered professionals who help public health by reducing sedentary lifestyle in society. In that context, decrement in PA level, i.e., their inactivity determined during the COVID-19 pandemic is unacceptable.
ВОЂЕЊЕ УРБАНЕ ПОЛИТИКЕ У ПРАВЦУ РАЗВОЈА И БЛАГОСТАЊА ГРАЂАНА – ЛЕКЦИЈЕ ИЗ СКАНДИНАВИЈЕ
Authors: Đorđević Snežana
Published: March 2021

This article analyses the way of managing urban policy in Scandinavian countries, as an example for Serbia. By analyzing urban policy as complex activity, because it demands contextual approach, democratic governmental capacities, good management with capacities to tail services according to the needs of citizens in their community, we could understand cities as stimulators of development and creators of welfare. This analysis tries to identify how Serbia, as transitional country can learn lessons from Scandinavian countries, to modernize management, democratize political system (decentralization and strengthening local government capacities), as well as to decrease corruption and misuses in public affairs.In methodological sense this article includes analysis of the system, the way of creation and steering urban policy in Scandinavian countries with affirmation of knowledge (evidence based public policy) and professionalism. Case study of Copenhagen city and experiences from other cities from this region, will procure in view of potential benefits of such an approach. On this basis comparison is made with similar processes in Serbia, which give us possibility to identify necessary corrections in our system.Some of the results of this paper are better knowledge of Serbian system weaknesses (especially in way of managing cities), loss of benefits which democratic and decentralized society enables, modern management, creation of policies on evidence, and creative searching for solution.One can conclude that reform changes, which turn out to be impossible for implementation in our society, do not demand great material investments, but demand the changing of values, priorities and model of behavior.
ABOUT THE LEGAL RESPONSIBILITY OF THE CENTRAL BANK IN MONETARY LAW
Authors: Dimitrijevic Marko , Golubovic Srdjan
Published: March 2021

The subject of the analysis in this paper is to identify and evaluate the concept of central bank legal responsibility in the contemporary monetary law. In this regard, the research focuses on issues related to the need of clarifying and defining the nature, type and extent of central bank liability and compensation mechanisms for damage that may be caused to third parties in the implementation of the transferred lex monetae in practice. The first part of the paper focuses on the axiological and dogmatic analyses of the legal framework of the central bank, which is governed by the national monetary legislation sui generis, and the interpretation of different legislative solutions in the practice of comparative monetary law in the area of responsibility and legal protection of the central bank. The subject of special interest of the authors is the monetary-legal analysis of the relevant provisions of the Law on the National Bank of Serbia, since in their opinion, a clear determination of the responsibility of the supreme monetary institution is a precondition for its credibility, not only in national but also in the international monetary order, and a conditio sine qua non of creating a reputable and consistent national monetary jurisdiction.
СОЦИЈАЛНО ПОРЕКЛО СТУДЕНТСКЕ ОМЛАДИНЕ И ИЗБОР СТУДИЈСКИХ ПРОГРАМА ФАКУЛТЕТА УНИВЕРЗИТЕТА У НИШУ
Authors: Marković Krstić Suzana , Milošević Radulović Lela
Published: March 2021

Based on the tenets of the theory of cultural capital (P. Bourdieu) and the results of studies on the social dimension of education, the paper analyzes the connection between the social origin and educational orientation of the student population of the University of Niš. It also focuses on family socio-economic status and cultural-educational status as socially differentiated factors of educational orientation (choice of program of study).The paper presents the results of the study carried out from April until June 2019. The sample included 374 students from 13 faculties of the University of Niš. A comparative analysis of the social origin of the students (operationalized through the educational and socio-professional status of their parents and the financial status of their families) represented the starting point for the study of the social determination of their educational orientation. The findings indicate that children of agricultural workers and farm laborers more often choose the Faculty of Agriculture, Faculty of Pedagogy and Faculty of Economics, while children of business professionals and professionals with a non-business background more often choose the Faculty of Science and Mathematics, Faculty of Arts and the Faculty of Law, compared to the students with origins from other socio-professional groups. Since the research has confirmed the existence of social differentiation in educational orientation, it is necessary to design and realize adequate educational policy measures to overcome social inequality in education.
Ambient seismic noise tomography to build up a 3D shear-wave velocity model
Authors: Cárdenas Soto Martín , Piña Flores José , Escobedo Zenil David , Sánchez González Jesús , Martínez González José Antonio
Published: March 2021

To explore the usefulness of the ambient seismic noise tomography method for characterizing the subsoil surface structure, in this study, we apply this method to contribute to geotechnical decision-making in the construction of a school building. We used a rectangular array (36x56 m) of 48-4.5 Hz vertical geophones and produce surface wave tomographies from the travel times of Rayleigh waves extracted by cross-correlation of seismic noise. We determined a final 3D Vs model using 1D models derived from the inversion of dispersion curves obtained from the tomography maps for different frequencies. The 3D model shows an excellent resolution (vertical and lateral); we observe critical velocity contrasts in the range of 2 to 15 m deep. At depths higher than 15 m, the velocity has values close to 900 m/s; however, we observe a low-velocity anomaly associated with a lava tube or crack that seems to continue under an adjacent building.
Lignocellulosic Content and Biofuel Potential of Post-harvest Sugarcane Leaves from Commonly Cultivated Indian Varieties
Authors:   ", Palliprath Suchithra ,   Department of Plant Science, Central University of Kerala, Tejaswini Hills, Periye, Kasaragod, 671 320 (India)", Poolakkalody Najya Jabeen , Ramesh Kaviraj , Manisseri Chithra
Published: March 2021

Sugarcane is one of the most important crops in India and its post-harvest leaves having low fodder value compared to many other agri residues, can be utilized for biofuel production. There is no detailed information on the lignocellulosic content of cane straw from different varieties, which could be helpful for the selection of potential biofuel feedstock and designing suitable pretreatment methods. Hence, in the present study, lignocellulosic content of post-harvest leaves from seventeen Indian cane varieties was analyzed for its better utilization in bioethanol production. Major cell wall polymers such as cellulose, hemicellulose and lignin were estimated in a range of 53.8-38.7%, 34.4-23.6% and 18.9-13.3% dry weight of biomass respectively in these varieties. Cellulose, hemicellulose and lignin contents in Nayana (CO 86032) were found to be 53.8%, 31% and 18.4% respectively. Among the tested varieties, Nayana was selected for further pretreatment studies being one of the candidates widely cultivated in India with high sucrose and cellulose content. 1-ethyl,3-methylimidazolium acetate ([Emim][Ac]) pretreatment at 150°C for 3 hr was found to be effective in biomass depolymerization. Higher degree of delignification was observed in [Emim][Ac] (62.1%) compared to hot water pretreatment (13.4%). FTIR spectra also confirmed the effective depolymerization of the biomass. The biofuel potential of [Emim][Ac] pretreated biomass was assessed in terms of saccharification efficiency and was found 3.8 fold higher compared to untreated biomass at 72 hr of enzymatic hydrolysis.
Phytochemical Screening and Allelopathic Effects of Ageratum conyzoides L.
Authors:   ", Lalrindiki J.C. Angel ,   Laboratory of Ecology, Department of Botany, School of Life Sciences, Mizoram University Tanhril–796004, India", Zohmachhuana Alex ,   "Laboratory of Ecology, Department of Botany, School of Life Sciences, Mizoram University Tanhril–796004, India", Lalnunmawia F.
Published: March 2021

A weed is a plant that grows and compete with other plants for food, light, moisture and space. Ageratum conyzoides L. is a common weed belonging to the Asteraceae family. They are annual aromatic weed. They are invasive of pastures, vacant lots and even entire forest areas. Phytochemicals are secondary metabolites that are known to influence various activities of plants. The qualitative phytochemical analysis of the methanol leaf extract of A. conyzoides revealed the presence of phenols, flavonoids, alkaloids, quinones, cardiac glycosides, terpenoids and tannins except saponins and anthraquinones, whereas the quantification revealed that the methanol extract contained flavonoid content (27.8±0.685 mg/g), phenol content (8.6±0.446 mg/g) and alkaloid content (2.06±0.53 mg/g). The fresh leaf extract of A. conyzoides was treated to the seeds of Zea mays to study the allelopathic effect of the weed. The germination rate shows a gradual decline with increase in the concentration of the weed extracts.
The 2,2’ Dipyridyl-Induced Iron Starvation and its Effects on Growth and Photosynthesis in Cyanobacterium Nostoc punctiforme ATCC 29133
Authors:   ", Vanlalsangi Rebecca ,   Department of Biotechnology, Mizoram University, PB No 190, Aizawl-796004, Mizoram, India", Samanta Loknath ,   "Department of Biotechnology, Mizoram University, PB No 190, Aizawl-796004, Mizoram, India", Bhattacharya Jyotirmoy ,   "Department of Biotechnology, Mizoram University, PB No 190, Aizawl-796004, Mizoram, India"
Published: March 2021

Iron is essential for growth of most organisms, including cyanobacteria, a ubiquitous and ecologically important group of microorganisms in nature. The present study was initiated to investigate the effects of iron starvation on the growth, frequency of heterocysts (the sites for nitrogen-fixation), photosynthetic pigments and photosynthesis in the filamentous, nitrogen-fixing cyanobacterium Nostoc punctiforme ATCC 29133. Iron starvation was achieved in cyanobacterial cultures by growing them in medium free of combined nitrogen containing 2,2’dipyridyl (a high affinity iron-chelator) without any addition of iron source. Compared to iron-sufficient control cultures, the iron-starved cultures showed decrease in growth determined for 15 days. The reduction in growth was coupled with a decreased heterocyst (N2-fixation sites) frequency and the number of cells per filament measured after 2 and 4 days of iron-starvation. Similarly, a considerable drop in the concentration of photosynthetic pigments such as, phycocyanin and chlorophyll a were also noticed in iron-starved cultures. Carotenoid level, however, was higher in iron-starved cultures compared to control. The maximum quantum efficiency of photosystem II photochemistry indicating the photosynthetic efficiency was severely affected in iron-starved Nostoc punctiforme ATCC 29133. Overall, the results presented in this study suggest that deficiency of iron negatively impacts growth, photosynthesis and perhaps nitrogen-fixation in the cyanobacterium N. punctiforme ATCC 29133. Given the role of cyanobacteria in biofertilizer technology, it is suggested that iron bio-availability in agricultural fields may strongly impact the biofertilizer potential of diazotrophic cyanobacteria. Therefore, efforts to improve biofertilizer potential of cyanobacteria may be directed towards identifying strains which can better adapt to iron deficiency.
AGRICULTURA FAMILIAR E SUSTENTABILIDADE NO ESTADO DO AMAZONAS: DO DESENVOLVIMENTO LOCAL PARA O SETORIAL
Authors: Conceição de Oliveira Elane , Farias Libania Giovanna Beatriz , Marques Gama Lucilene , Ribeiro Felipe José
Published: March 2021

O objetivo deste trabalho é contribuir com as discussões sobre agricultura familiar e    sustentabilidade como prerrogativa para o desenvolvimento do setor primário no estado do Amazonas (AM). Para isto, foi realizado levantamento teórico sobre as interrelações existentes entre agricultura familiar, desenvolvimento local e sustentabilidade; diagnóstico socioeconômico e ambiental da região da Amazônia Ocidental; e, levantamento analítico do setor familiar das propriedades rurais do AM por meio do Censo Agropecuário 2017. Segundo os resultados, teoricamente há uma relação direta entre as contribuições da agricultura familiar para o desenvolvimento local, inclusive sob a perspectiva do desenvolvimento sustentável. Muito embora o setor agropecuário do AM participe apenas com 7% da economia estadual, o setor é expressivamente composto por pequenos agricultores familiares localizados no interior do Estado. O número dos estabelecimentos rurais, em sua maioria, atinge 90% do total, excetuando a pecuária e a aquicultura. As categorias de estrato de terra são inferiores a 10 hectares. O fortalecimento da agricultura familiar na região aumentaria a participação da agropecuária na economia estadual, ajudaria no controle da grande incidência de pobreza monetária da região, controlaria a insegurança alimentar e nutricional e promoveria o desenvolvimento sustentável local.
IDENTIFYING THE FACTORS INHIBITING RESEARCH ON URBAN FREIGHT TRANSPORT IN DEVELOPING COUNTRIES: REVIEW OF STUDIES IN INDIA
Authors: Dhonde Bhavesh , Patel Chetan
Published: March 2021

Most of the cities in developing countries are found to have non-uniform distribution of urban space, complex land use patterns, mixed traffic conditions, extensive use of non-motorized vehicles and lack of traffic discipline. In comparision to the developed countries, it is more complicated to manage urban freight transport in developing countries due to the lack of sufficient infrastructure, wide socio-economic gaps between urban and non-urban areas and haphazard peripheral developments. Therefore the methods and strategies used to manage urban freight transport in developed countries cannot be directly used for cities in developing countries. It is necessary to devise distinctive solutions to improve the efficieny of urban freight transport in these cities, which may otherwise, inhibit the economic growth of these cities as well as hamper the overall momentum of country’s GDP growth gathered over decades. In recent years some studies focussing on urban freight transport are carried out in India, China and Brazil. This paper reviews urban freight studies carried out for Indian cities. India, world’s second most populous country to China, has 39 cities with a million plus population. Most of its cities are facing problems like congestion and air quality degradation due to inefficient freight movement practices. Review of urban freight studies is carried out based on different parameters influencing efficiency of freight movement. Various challenges and limitations faced by the researchers and administrators are discussed. Based on the review results, suggestions and future scope for research in different aspects of urban freight are presented in the paper.
The coronavirus pandemic narratives in Italian digital media
Authors: Milan Fitera Jorge , Abuín-Vences Natalia , Sierra Sánchez Javier
Published: March 2021

In this paper we discuss the SARS-CoV-2-related information coverage (beginning of the epidemic) in Italian digital media narratives. We surveyed the digital articles that reported the highest engagement level. The aim was to identify the most prominent variables (topics, players and news coverage area). Similarly, a discourse analysis was carried out by analyzing the tone used in relation to the variables mentioned. The results show that the most important topics were health, politics and the economy. Headlines appeared to be more likely to have a negative tone, although neutral headlines were the most common. The main feature in digital media headlines was civil society.
Descrição e análise do uso de orações gerundivas nos comandos dos itens do Enem e sua relação com os aspectos avaliativos da prova: desafios na elaboração de itens avaliativos
Authors: Rocha Ana Paula Antunes , Lima Bruno Assis Freire
Published: March 2021

Itens de provas são elaborados segundo critérios de diversas naturezas. Conciliar esses critérios é um desafio, sobretudo em uma prova com a abrangência do Enem. Neste texto, descreve-se e analisa-se um tipo de oração muito comum nos comandos de itens: as orações gerundivas, como “Considerando X, faça Y”. Para tanto, foi constituído o corpus com provas do Enem, realizadas de 2010 a 2019, das quais foram extraídas as ocorrências de orações gerundivas. A partir desse levantamento, verificou-se se os comandos assim formulados estão adequados às normas do português padrão prescritas pelas gramáticas tradicionais. Nos casos em que se encontram desvios, se discute se uma simples revisão gramatical resolveria o problema, já que, na elaboração de itens, correção gramatical é um critério técnico indissociável.