bluuebunny/crossref_metadata_2025 huggingface dataset:
Physical activity parameters and Body Mass Index among Public Secondary School Teachers, Oyo State. Nigeria
Authors: Fabunmi Ayodeji A. , Oyedokun Barakat O. , Omole John O.
Published: October 2019

Introduction: Physical inactivity is an important contributor to obesity epidemic. In Nigeria, public secondary school teachers are prone to sedentary lifestyle. This study determined physical activity parameters and Body mass index (BMI) among public secondary school teachers in Ibadan North Local Government Area of Oyo State. It also compared physical activity parameters and BMI between male and female teachers.
Materials and methods: This study is a cross sectional survey and 101 (65 females and 36 males) public secondary school teachers participated. Physical activity parameters (number of steps, distance covered and energy expenditure) were assessed using pedometer while the Body Mass Index (BMI) was computed from participant’s height and weight. Data were analyzed using descriptive (percentage, mean, standard deviation) and inferential (Independent ‘t’ test and Pearson product moment correlation coefficient) statistics. Alpha level was set at p<0. 05.
Results: Participants mean age, BMI, number of steps and energy expenditure were 43.67±9.49 years, 26.70±5.55 kg/m2, 7429.06±5469.6 steps per day and 185.26± 158.64 kcal/day respectively. There was a negative, non-significant correlation between number of steps and BMI (r = -0.004, p = 0.969), a significant positive correlation between Energy Expenditure and number of steps taken (r = 0.766, p = 0.001) and a positive, non-significant correlation between Energy Expenditure and BMI (r = 0.150, p = 0.135). Females had significantly higher body weight and BMI than male teachers.
Conclusions: Body weight and BMI was significantly higher among female than male participants. Men were physically active more than women but not significantly.
Relevance, Novelty, Diversity and Personalization in Tag Recommendation
Authors: Belém Fabiano Muniz , Almeida Jussara Marques , Gonçalves Marcos André
Published: October 2019

The design and evaluation of tag recommendation methods have historically focused on maximizing the relevance of the suggested tags for a given object, such as a movie or a song. Tag relevance can be defined in two perspectives. In an object-centered perspective, a tag is relevant if it correctly describes the content of the target object, while in a personalized perspective, a relevant tag not only describes well the content of the target object, but also matches the interests of the target user. However, even enriched by a personalized perspective, relevance by itself may not be enough to guarantee recommendation usefulness. Promoting novelty and diversity in tag recommendation not only increases the chances that the user will select some of the recommended tags, but also promotes complementary information (i.e., tags), which helps cover multiple aspects or topics related to the target object. Yet, no prior work has tackled novelty and diversity in the specific context of tag recommendation. In this thesis, we aim at proposing novel solutions that effectively address multiple aspects related to the tag recommendation problem, notably, relevance, novelty, diversity and personalization of the suggested tags. We evaluate our strategies using real data from five Web 2.0 applications, namely, Bibsonomy, LastFM, MovieLens, YahooVideo and YouTube. Our experimental results demonstrate the effectiveness of our new methods over state-of-the-art approaches, and attest the viability to effectively increase novelty and diversity with only a slight impact (if any) on relevance. We also found that our proposed syntactic attributes are responsible for significant improvements (up to 17% in precision) over the best relevance-driven method in a cold start scenario. In addition, we assessed the benefits of personalization to provide better descriptions of the target object, with average gains of 15% in relevance over the best object-centered approach.
User Preference Dynamics on Evolving Social Networks - Learning, Modeling and Prediction
Authors: Pereira Fabiola S. F. , Oliveira Gina M. B. , Gama João
Published: October 2019

The preferences adopted by individuals are constantly modified as these are driven by new experiences, natural life evolution and, mainly, influence from friends. Studying these temporal dynamics of user preferences has become increasingly important for personalization tasks. Online social networks contain rich information about social interactions and relations, becoming essential source of knowledge for the understanding of user preferences evolution. In this thesis, we investigate the interplay between user preferences and social networks over time. We use temporal networks to analyze the evolution of social relationships and propose strategies to detect changes in the network structure based on node centrality. Our findings show that we can predict user preference changes by just observing how her social network structure evolves over time.
Time Reduction on 3D-HEVC Depth Maps Coding using Static Decision Trees Built Through Data Mining
Authors: Saldanha Mário , Porto Marcelo , Marcon César , Agostini Luciano
Published: October 2019

This dissertation presents a fast depth map coding for 3D-High Efficiency Video Coding (3D-HEVC) based on static Coding Unit (CU) splitting decision trees. The proposed solution is based on our previous works and avoids the costly Rate-Distortion Optimization (RDO) process for depth maps coding, which evaluates several possibilities of block partitioning and encoding modes for choosing the best one. This coding approach uses data mining and machine learning to extract the correlation among the encoder context attributes and to build the static decision trees. Each decision tree defines if a depth map CU must be split into smaller blocks, considering the encoding context through the evaluation of the CU features and encoder attributes. The results demonstrated that this approach can halve the 3D-HEVC encoder processing time with negligible coding efficiency loss. Besides, the obtained results surpass all related works regarding processing time and coding efficiency. The results reported in this dissertation were published in three journals and two events, besides generate a patent deposit. These products have the master student as the first author.
A Social Network Analysis of Football with Complex Networks
Authors: Felix Lucas G. S. , Barbosa Carlos M. , Vieira Vinícius da F. , Xavier Carolina Ribeiro
Published: October 2019

Soccer is the most popular sport in the world and due its popularity, soccer moves billions of euros over the years, in most diverse forms, such as marketing, merchandising, TV quotas and players transfers. As example, in the 2016/2017 season, only England has moved about 1.3 billion of euros only in players transfers. In this work, it is performed a study of the transfer market of player. To do so, players transfer data were gathered from the website Transfermarkt and were modeled as a graph. In order to perform this study, different Complex Networks techniques were applied, such as Overlap Community Detection and Property Analysis. Through our results we could evaluate the soccer players market, and see a pattern that every market has at least one farm country, which has a main function of selling athletes, or a buyer country, which most of its transactions is buying players.
A Context-Aware Platform For Personalized Content Delivery In Educational Environments
Authors: Rodrigues Victoria Ribeiro , Barreto Raquel , Monteiro André Felipe de A.
Published: October 2019

In most educational environments, the process of communication with students is performed on ad hoc basis, with lowstandardization and few interaction. However, a more dynamic communication is demanded by the young profile of most students. In this way, mobile devices are an efficient and flexible channel to reach this public. In this scenario, we present a context-aware platform to provide the distribution of educational content using a sensitive model context based on the users location. Thus, the platform can satisfy the specific demands informed by the user, and also respond to the current context, delivering personalized content according to the users location. Moreover, this is a multidisciplinary project, involving students in the role of users and also as collaborators for modeling, development and testing of the platform.
BumbAR: Multimedia Authoring Through Augmented Reality
Authors: Mendes Paulo R. C. , Soares Neto Carlos de S.
Published: October 2019

This work describes the evolution of an approach based on augmented reality for authoring multimedia presentations. The BumbAR approach is based on the NCM model and explores the use of augmented reality and real-world objects (markers) as an innovative user interface for describing the behavior and relationships between the media objects that are part of a multimedia presentation. It was evaluated through a qualitative study based on the TAM model. The qualitative study aimed at evaluating users’ attitude towards using BumbAR. The results showed that the participants found that the proposed approach is both useful and easy-to-use, but comments made by them showed the need of including new functionalities in the BumbAR tool, which are described in this paper.
ENEM na Rede: a social, online and free environment to support Brazilian students in knowledge creation
Authors: Arrais Marcos , Oliveira Jonice
Published: October 2019

This paper presents the structure and functionalities of the “ENEM na Rede” tool, a free online platform that helps students from Brazil in preparing for the National High School Exam (Exame Nacional do Ensino Médio – ENEM). The application uses social networking and gamification concepts to build an engaging environment conducive to knowledge building. During the use of the platform students are introduced to the exam content through an automated method that detects deficiencies and proficiency in the exam areas.
Videocolaboração no Hospital Militar de Área de São Paulo - Exército Brasileiro
Authors: Segobia Mauricio M. M. , Novoa Claudia Galindo , Silva Cicero I. da , Melo Paulo M. Porto de , Almeida Jane de
Published: October 2019

This article analyzes the experience of the São Paulo Military Hospital (HMASP) in the area of digital health, telemedicine and telehealth. The goal is to present the state of the art of digital health at the HMASP, a history of its recent implementation and the challenges regarding the technological conditions existing in the field of videocolaboration for surgery and teleassistance. The article also analyzes some experiences in the area of telemedicine used at the HMASP by the Brazilian Army and also lists future challenges regarding the intensive use of videocolaborative processes in digital health.
A Proposal for Supporting Sensory Effect Rendering in Ginga-NCL
Authors: Rodrigues Renato de Oliveira , Josué Marina I. P. , Abreu Raphael S. , Amorim Glauco F. , Muchaluat-Saade Debora C. , Santos Joel A. F. dos
Published: October 2019

This contribution proposes an extension to middleware Ginga- NCL as a way to provide a declarative approach for the creation and execution of interactive mulsemedia applications. It enables the author to create mulsemedia applications in NCL, defining sensory effects as nodes. Therefore, one is able to reuse all the language support for content synchronization, user interaction, context adaptation, etc.
H.761 Support of a New Syntax to Refer NCL-Node-Properties Instead of the Current "Take It From There" Syntax
Authors: Guedes Alan L. V. , Colcher Sergio
Published: October 2019

Every NCL link relates two or more Node interfaces. When an NCL developer defi ne a link bind, however, it should always use BOTH component and interface attributes. This leads to two problems: (a) require defi ne two XML elements, which is tedious and error- prone; (b) require bad "Take It From There" workaround to access an interface from a Node participating in the link. We propose that component is optional. Then each interface can be accessed by an id which must be unique regarding the events of the same type in its container object. We propose a naming convention for identifying interfaces within a Document
Outage and Bit Error Probability Analysis in Energy Harvesting Wireless Cooperative Networks
Authors: Hoc Ly Tran Thai , Nguyen Hoang-Sy , Ma Quoc-Phu , Huynh Van Van , Nguyen Thanh-Long , Phuoc Huynh Tan , Voznak Miroslav
Published: October 2019

This study focuses on a wireless powered cooperative communication network (WPCCN), which includes a hybrid access point (HAP), a source and a relay. The considered source and relay are installed without embedded energy supply (EES), thus are dependent on energy harvested from signals from the HAP to power their cooperative information transmission (IT). Taking inspiration from this, the author group investigates into a harvest-then-cooperate (HTC) protocol, whereas the source and the relay first harvest the energy from the AP in a downlink (DL) and then collaboratively work in uplink (UL) for IT of the source. For careful evaluation of the system performance, derivations of the approximate closed-form expression of the outage probability (OP) and an average bit error probability (ABER) for the HTC protocol over Rayleigh fading channels are done. Lastly, the author group performs Monte-Carlo simulations to reassure the numerical results they obtained.
Comparison of High-Throughput Fully Automated Immunoanalyzers for Detecting Hepatitis B Virus Infection
Authors: Won Dongju , Park Younhee , Choi Dasom , Kim Hyon-Suk
Published: October 2019

Context.—

High-throughput automated immunoanalyzers for hepatitis B virus serologic markers have been introduced but have not been compared to existing systems.

Objective.—

To compare hepatitis B surface antigen, hepatitis B surface antibody, and total hepatitis B core antibody analyses between our Architect i2000 platform and newer high-throughput fully automated immunoanalyzers.

Design.—

From May to June 2018, a total of 932, 914, and 1055 samples tested for hepatitis B surface antigen, hepatitis B surface antibody, and total hepatitis B core antibody, respectively, with the Architect i2000 system for routine testing in our center were tested again with Alinity i, Atellica IM, and Cobas e801 systems.

Results.—

Total concordance rates among the systems were 98.0%, 89.5%, and 93.0% for hepatitis B surface antigen, hepatitis B surface antibody, and total hepatitis B core antibody, respectively. Cohen's κ values exceeded 0.8. The correlations between serum hepatitis B surface antibody levels quantified by all 4 systems were high (r > 0.85). The hepatitis B surface antibody averages were greater for the Alinity i, Atellica IM, and Cobas e801 than for the Architect i2000 (P < .001).

Conclusions.—

Alinity i, Atellica IM, and Cobas e801 automated immunoanalyzers performed well when compared with the existing Architect i2000 system with regard to detection of hepatitis B viral infection. However, the new systems have higher titer and positivity rates for hepatitis B surface antibody and are more sensitive. Notably, the Atellica IM has a lower positive rate for total hepatitis B core antibody than does the Architect i2000.
"Amenemope: sobre o uso do tempo", de Molefi Kete Asante
Authors: Carmo Aline Cristina Oliveira de
Published: October 2019

Neste texto, Molefi Kete Asante apresenta Amenemope como um importante representante da filosofia ética egípcia antiga, por sua capacidade de combinar elementos da cosmogonia de seu povo, expressando o desenvolvimento de um humanismo fundado no modo de vida egípcio. Assim, são destacados três capítulos das Instruções de Amenemope, geralmente datadas do século 10 a.C., e conhecidas como Seboyet. A respeito de sua importância, essa obra é indicada como um possível modelo para todas as literaturas antigas de tipo proverbial, tais como os provérbios de Salomão e os Analectos de Confúcio.
Filosofia política moçambicana: por um novo projeto de democracia
Authors: Oliveira Lorena Silva
Published: October 2019

O presente artigo visa apresentar como o filósofo Severino Ngoenha coloca a filosofia moçambicana a serviço da reflexão sobre sua temporalidade e contexto histórico, tendo em vista pensar o processo democrático de Moçambique e apresentar os fundamentos necessários para uma dimensão moçambicana da Democracia. Nesta perspectiva, este trabalho amparado em suas obras Os Tempos da Filosofia: Filosofia e Democracia Moçambicana e Filosofia Africana: Das independências às Liberdades apresenta, através de um triplo contratualismo, os fundamentos propostos pelo filósofo para que Moçambique conquiste um modelo institucional de Democracia. Em tom conclusivo, consideramos que a filosofia africana pode ser compreendida como um instrumento fundamental na construção de um projeto de futuro melhor para o continente africano, como para Moçambique, pois ela pode fornecer outras alternativas para que os povos africanos caminhem rumo à Liberdade.
Percepción de riesgo ante el consumo de alcohol y tabaco en estudiantes de ciencias de la salud de Saltillo
Authors: González Angulo Pedro , Hernández Martínez Eva Kerena , Rodríguez Puente Linda Azucena , Castillo Vargas Raúl , Salazar Mendoza Javier , Camacho Martínez Jasmin Urania
Published: October 2019

Introduction: Public health problems caused by the consumption of psychoactive substances have reached alarming proportions and constitute an important and largely preventable health and social burden on a global scale. Objective: To identify the relationship between risk perception and alcohol and tobacco consumption in health sciences university students of a public educational institution of Saltillo, Coahuila, Mexico.Methodology: The study design is descriptive and correlational, with a sample of 609 students selected by stratified probabilistic sampling. A personal data card and the prevalence of alcohol and tobacco consumption, the risk perception questionnaire for the consumption of licit drugs and the test for the identification of disorders due to alcohol use were used. The present study is under the provisions of the Regulation of the General Health Law on Research for Health in Human Beings in Mexico. Results: The amount of cigarettes consumed and the age of the participants presented a statistically significant relationship (rs=0.156, p= .026) as well as the perception of risk and the amount of alcoholic beverages consumed, had a significant negative relationship (rs=-0.102, p=.026 Conclusion: The study provides accurate and timely information regarding the profile of alcohol and tobacco consumption in health science students.

Introducción: Los problemas de salud pública causados por el consumo de sustancias psicoactivas han alcanzado proporciones alarmantes y constituyen a escala mundial una carga sanitaria y social importante y en gran medida prevenible. Objetivo: Identificar la relación entre la percepción de riesgo y consumo de alcohol y tabaco en estudiantes universitarios de ciencias de la salud de una institución pública educativa de Saltillo, Coahuila, México.Metodología: El diseño del estudio es de tipo descriptivo y correlacional, con una muestra de 609 estudiantes seleccionados por el muestreo probabilístico estratificado. Se utilizó una cédula de datos personales y de prevalencia de consumo de alcohol y tabaco, el cuestionario de percepción de riesgo hacia el Consumo de Drogas Lícitas y la Prueba de Identificación de Desórdenes por Uso de Alcohol. El presente estudio se apegó a lo dispuesto en el Reglamento de la Ley General de Salud en Materia de Investigación para la Salud en Seres Humanos en México. Resultados: La cantidad de cigarrillos consumidos y la edad de los participantes presentaron una relación estadísticamente significativa (rs=0.156, p= .026) al igual que la percepción de riesgo y la cantidad de bebidas Alcohólicas consumidas, tuvo una relación significativa negativa (rs=-0.102, p=.026 Conclusión: El estudio aporta información veraz y oportuna en cuanto al perfil del consumo de alcohol y tabaco en estudiantes de ciencias de la salud.
Atención sanitaria trans* competente, situación actual y retos futuros. Revisión de la literatura
Authors: García-Acosta Jesús Manuel , De Castro Peraza María Elisa , Arias-Rodríguez María de los Ángeles , Llabrés-Solé Rosa , Lorenzo-Rocha Nieves Doria , Perdomo-Hernández Ana María
Published: October 2019

Introduction: We know as a transgender person who is not identified with the sex of birth, this fact still collected as pathology by the current Diagnostic and Statistical Manual of Mental Illness (DSM-V) will cause inequalities and barriers At the time of health care.Objective: To explore the difficulties for health care perceived by trans* people and by the professionals who assist them in health centres.Material and method: Literature review.Results: Both professionals and trans* people perceive significant barriers. They could be grouped by diverse topics: healthcare inequalities noticed by trans* patients, prejudices and felt discrimination, specific health risks, lack of professional knowledge and deficit of training in current curricula. On the other hand, nursing with trans* patients may result in a facilitator. Conclusions: There are multiple factors which can be modified and which produce that trans* people do not notice appropriate care. Appropriate training of health professionals is the one which acquires more relevance. The results found provide key information for the future design of interventions aimed at improving the quality of the assistance in this group.

Introducción: Conocemos como una persona trans* a aquella que no se identifica con el sexo de nacimiento, este hecho aún recogido como patología por el actual manual diagnóstico y estadístico de enfermedades mentales (DSM-V) va a provocar que existan desigualdades y barreras significativas a la hora de la atención sanitaria.Objetivo: Explorar las dificultades para la asistencia sanitaria percibidas por las personas trans* y por los profesionales que los atienden en centros sanitarios.Material y método: Revisión de la literatura.Resultados: Tanto los profesionales como las personas trans* perciben barreras significativas. Se podrían agrupar en diversos temas: desigualdades en la atención sanitaria percibidas por los pacientes trans*, prejuicios y discriminación sentida, riesgos específicos de salud, déficit de conocimientos de los profesionales y déficit de formación en los planes de estudio actuales. Por otro lado, enfermería ante los pacientes trans* puede resultar un facilitador.Conclusiones: Existen numerosos factores que pueden ser modificables y que provocan que las personas trans* no perciban una asistencia adecuada. La adecuada formación de los profesionales sanitarios es uno de los que adquiere mayor relevancia Los resultados encontrados aportan una información clave para el futuro diseño de intervenciones dirigidas a mejorar la calidad de la asistencia en este colectivo.
A Purely Algebraic Justification of the Kabsch-Umeyama Algorithm
Authors: Lawrence Jim , Bernal Javier , Witzgall Christoph
Published: October 2019

The constrained orthogonal Procrustes problem is the least-squares problem that
calls for a rotation matrix that optimally aligns two matrices of the same order.
Over past decades, the algorithm of choice for solving this problem has been the
Kabsch-Umeyama algorithm which is essentially no more than the computation of the
singular value decomposition of a particular matrix. Its justification as presented
separately by Kabsch and Umeyama is not totally algebraic as it is based on solving
the minimization problem via Lagrange multipliers. In order to provide a more
transparent alternative, it is the main purpose of this paper to present a purely
algebraic justification of the algorithm through the exclusive use of simple
concepts from linear algebra. For the sake of completeness, a proof is also included
of the well-known and widely-used fact that the orientation-preserving rigid motion
problem, i.e., the least-squares problem that calls for an orientation-preserving
rigid motion that optimally aligns two corresponding sets of points in d-dimensional
Euclidean space, reduces to the constrained orthogonal Procrustes problem.
Measles Outbreak Among Healthcare Professionals: Operational Response and Remedial Measures
Authors: Dari Silvia , Cassano Anna Maria , Di Lorenzo Sabrina , Napoli Raffaela , Manini Elisabetta , Simeone Valentina , De Paolis Fabrizio , Aquilani Silvia
Published: October 2019

Given the numerous cases recorded in 2017, a descriptive epidemiological study was conducted in the Viterbo Local Health Unit (LHU) area, Italy. Hospital Discharge Sheets (HDSs) and the notifications of infectious diseases (NOIDs) were used.We were able to trace the distribution of the disease both in the general population and, in particular, among the staff of Belcolle Hospital in Viterbo. In 2017, 50 cases of measles were detected among the population in the area of Viterbo. Of these, 10 concerned healthcare professionals and 3 employees of the Viterbo LHU.Due to the education and information campaign on the measles, mumps, and rubella (MMR) vaccine and the close monitoring of the vaccination coverage among the employees of the hospital (performed for the first time), only 4 cases were registered from January 1, 2018 to December 31, 2018 in the same area, and no healthcare workers were involved.
Lazarus, aplicación de apoyo para personas con problemas de visión
Authors: Sánchez Natalia
Published: October 2019

Las personas con discapacidad visual encuentran grandes dificultades en realizar tareas como identificar objetos, textos y colores. La incógnita de no saber si están identificando correctamente la realidad ocasiona que estas personas tengan mayor inseguridad en sus capacidades. El objetivo de Lazarus es proporcionar una herramienta que pueda ayudarlas en tareas sencillas pero a la vez importantes de su vida diaria.
RELACIJE PROCJENE MOTORIČKIH SPOSOBNOSTI FUNCTIONAL MOVEMENT SCREENING METODOM I USPJEHA IZVOĐENJA ELEMENATA NA PARTERU I PRESKOKU
Authors: Jovanović Saša , Ljubojević Adriana , Novaković Violeta
Published: October 2019

Cilj ovog rada bio je provjera FMS (Functional Movement Screening) metode kao prediktora uspješnosti u izvođenju gimnastičkih elemenata na parteru i preskoku, na selekcionisanom uzorku koji je sačinjen od 36 muških ispitanika studenta Fakulteta Fizičkog vaspitanja i sporta Univerziteta u Banjoj Luci, starosti između 20-22 godine. Na uzorku od 11 varijabli na parteru: premet strance bočno (PRSTBO), premet strance čeono (PRSTČE), rondat (RONDAT), premet naprijed (PRENAP), premet nazad (PRENAZ), salto naprijed (SALNAP) i salto nazad (SALNAZ); i na preskoku: zgrčka sa fazom leta (ZGRLET), raznoška sa fazom leta (RAZLET), premet naprijed (PRNAPR) te rondat (PRERON); te FMS testiranju dobijene su normalne distribucije i relativno niska prosječna FMS vrijednost (14.313), koja prema mnogim autorima je blizu granične vrijednosti rizika od povrede (14). Daljom analizom dobijene su korelacione statistički značajne veze između FMS i varijabli PRENAZ (0.049) i SALNAZ (0.038) na nivou značajnosti 0.05, dok je primjenjena regresiona analiza dala generalne podake o predikcionom modelu koji je pokazao statističku značajnost0.03 sa prediktorskom varijablom FMS na nivou značajnosti 0.05. Posmatrajući vrijednosti koeficijenata determinacije R2, ustanovljeno je da se FMS metodom može izvršiti predikcija uspješnosti izvođenja odabranih gimnastičkih elemenata na parteru i preskoku kao cjelovitom modelu objašnjavajući oko 96 %zajedničkog varijabiliteta sa kriterijem, predstavljajući značajnu statističku vrijednost.
REZULTATSKA USPJEŠNOST U PLIVANJU NA 400 SLOBODNO U ZAVISNOSTI OD PROLAZNIH VREMENA PO DIONICAMA
Authors: Trivun Milomir , Panić Željko , Németh Zsolt
Published: October 2019

U ovom istraživanju na uzorku od 36 ispitanika podjeljenih na tri subuzorka od 12, plivača učesnika otvorenog prvenstva Bosne i Hercegovine 2018 i 2017, godine, kao i mitinga na 25 Međunarodnom memorijalu „Ante Lambaša“ u Beogradu 2017. godine, uzetu su podaci sa zapisnika plivačkih takmičenja prolaznih vremena, kao i krajni rezultati plivanja slobodno na 400 metara.Istraživanje je sprovedeno s ciljem utvrđivanja uticaja dionica plivanja (50, 100, 150, 200, 250, 300 i 350) metara, kao prediktorskog seta varijabli i uticaj na kriterijsku varijablu rezultatske uspješnosti plivanja 400 m slobodno. Dobijeni rezultati regresione analize ukazuju na statistički značajnu povezanost seta varijabli (50, 100, 150, 200, 250, 300 i 350) na kriterijsku varijablu plivanja 400 slobodno.Vrijednost koeficijenata multiple korelacije koji determinišu uticaj setat prediktorskih varijabli (50, 100, 150, 200, 250, 300 i 350) na kriterisku varijablu 400 m plivanja slobodno iznosi: za 50 m 42%, 100 m 52%, 150 m 65%, 200 m 67%, 250 m 67%, 300 m 68%, 350 m 43% zajedničke varijanse plivača Mitinga Olimp Banja Luka u 2018. godini.Vrijednost koeficijenata multiple korelacije koji determinišu uticaj setata prediktorskih varijabli (50, 100, 150, 200, 250, 300 i 350) na kriterisku varijablu 400 m plivanja slobodno iznosi: za 50 m 58%, 100 m 59%, 150 m 71%, 200 m 70%, 250 m 71%, 300 m 70%, 350 m 41% zajedničke varijanse plivača Mitinga Olimp Banja Luka u 2017. godini. Vrijednost koeficijenata multiple korelacije koji determinišu uticaj setata prediktorskih varijabli na kriterisku varijablu 400 m plivanja slobodno iznosi: za 50 m 58%, 100 m 65%, 150 m 62%, 200 m 84%, 250 m 67%, 300 m 89%, 350 m 76% zajedničke varijanse plivača Mitinga „Memorijal Ante Lambaša“ 2017. godini u Beogradu.Zaključak. Setat prediktorskih varijabli (50, 100, 150, 200, 250, 300 i 350) plivanja slobodno ima značajan procenat uticaja na kriterisku varijablu 400 m slobodno kod plivača mitinga na 25 Međunarodnom memorijalu „Ante Lambaša“ u Beogradu 2017. godine Srbija u odnosu na isti kod plivača učesnika otvorenog prvenstva Bosne i Hercegovine 2018 i 2017, godine.
THE RELATION BETWEEN MOTOR SKILLS AND PERFORMANCE OFSPECIFIC TECHNICAL ELEMENTS IN HANDBALL
Authors: Žakula Goran , Jovanović Saša
Published: October 2019

The aim of this research was to establish a relationship between motor skills andperformance of specific elements in handball. A battery of 18 motor skills tests was assessed on thesample of 58 male subjects, students of Faculty of Physical Education and Sport, aged 21-23years.Variables of coordination, figure eight running drill with bending under rope, lateral shuffle,agility on the floor, and agility in the air, all indicate to negative projection on the first isolatedcanonical factor, as do the two flexibility tests, shoulder and chest opener with rod and standingshoulder extension were applied as predictor variables and two tests dribbling around thecones (Metikoš and al. 1989) and throwing the ball against the wall (Rogulj and al. 1995).Theoverall results of the canonical correlation analysis indicated to the evaluation of the appliedcanonical model on motor tests in relation to the performance of specific handball elements,to the canonical correlation value of 0.765, with the Chi-Square test value of 320.101, and tostatistically significant correlation of used variables on level p .008. Through further analysis,4 canonical roots were extracted, out of which only the first one was statistically significant (p.008). Through observation of data on the correlation between motor variables and canonicalroots, it can be concluded that the MRCZTL (0.58) and MFEBML (0.56)variables have thehighest projection on the canonical factor, and thus are also most significant in conditioningthe results achieved. Also the MAGKUS (0.55), MBFTAP (0.51) and MBAU1Z (0.51)variables has statisticaly significant results in conditioning the results achieved.Results of thisanalisys are ppointing to the fact that the subjects with lower degree of those motor skills havealso had lower performance of specific handball elements, indicating the need for greater engagementof motor skills in performing the aforementioned elements.
ECOLOGICAL CERTIFICATION IN TOURISM SECTOR IN MONTENEGRO – ADVANTAGES AND CHALLENGES
Authors: Subotić Viktor , Popović Saša
Published: October 2019

The aim of this paper is to analyze concept of ecological certification, its advantages and challenges in the context of Montenegrin tourism accommodation sector. Based on EU Eco Label and Travelife certification schemes we tested advantages of greening tourist offer and contribution to the climate change combat in the country. Sample of 40 accommodation facilities are taken into consideration, and being offered series of presentations, direct interviews and incentives. Our results show that 10 out of 40 accommodation facilities are awarded with certificate, while 15 more facilities are in the process of gaining it in 2018. The main challenges we evidenced are as follows: limited human and financial resources to implement certification requirements; low level of understanding of marketing advantages that green certification brings; absence of national and local incentives to support certification implementation and destination safety and security aspects becoming main interest of tourism entrepreneurs.
THE NECESSITY OF BUSINESS RESTRUCTURING OF STATE-OWNED AND PUBLIC ENTERPRISES IN BOSNIA AND HERZEGOVINA
Authors: Šunje Aziz , Kulović Dženan
Published: October 2019

The restructuring of state-owned and public enterprises has attracted the attention of numerous researchers in the transition and post-transition period. The goal of restructuring as a business philosophy is to change and establish a new business philosophy, a new way of thinking. The correct interpretation of this term goes beyond its narrow and misleading translation, which equates to restructuring with a measure of change in structure. This paper examines the situation with the state-owned enterprises in Bosnia and Herzegovina. Although Bosnia and Herzegovina is characterized by the presence of two completely separate systems of corporate governance (corporate governance is regulated at an entity level without any common grounds at the level of Bosnia and Herzegovina), the symptoms of the situation are identical in both entities: state enterprises are commercially inefficient in both entities, and the reasons for their inefficiency are identical. The paper attempts to identify the symptoms and causes of such a state with a set of recommendations for the restructuring of state-owned enterprises, with clear definitions that, considering the trend of expansion of state-owned enterprises in highly developed countries, state-owned enterprises are needed here. It turns out that the privatized companies do not take into account the state interest. Following the logic of the OECD Guideline No. 2 (Ownership of State), first, it is considered how the state should manage the state-owned companies, and then by following the logic of the OECD Guideline no. 6 (Responsibilities of Committee) the complete corporation of state-owned enterprises is advocated in the way that state-owned enterprises have all the prerogatives of corruption, and are sufficiently distanced from political parties in power. Such an approach will significantly contribute to the improvement of corporate governance rating in Bosnia and Herzegovina that shows the atrophy of the system.
SLOW TOURISM IN VOJVODINA – MOTIVES AND GOALS OF CONSUMERS
Authors: Đuranović Dragan , Tomić Slavica , Leković Ksenija , Marić Dražen
Published: October 2019

Tourism is one of the fastest growing sectors in the world characterized by numerous new forms aimed at satisfying the sophisticated needs of the modern consumer. In such circumstances, the concept of slow tourism is gaining in importance with emphasized need for slowing down the pace of life. Slow tourism offers a solution to this need. In developing countries, this concept frequently tied with sustainable tourism, is linked to social movements such as: “slow food” (authentic, local food), “slow cities” (environmentally responsible and peaceful environment) and “slow transportation” (local buses and trains). The aim of the paper is the explanation of this phenomenon from the perspective of consumers. The authors conduct research based on a model consisting of: six general slow tourism motivations (relaxation, self-reflection, escape, novelty-seeking, engagement and discovery), two universal goals of slow tourism (revitalization and self-enrichment) and travel outcomes (satisfaction, future return intention and recommendations). The sample included 320 respondents from the territory of the Republic of Serbia who have visited some of the destinations in Vojvodina labeled as “slow place” in the past two years.
Length regulation of multiple flagella that self-assemble from a shared pool of components
Authors: Fai Thomas G , Mohapatra Lishibanya , Kar Prathitha , Kondev Jane , Amir Ariel
Published: October 2019

The single-celled green algae Chlamydomonas reinhardtii with its two flagella—microtubule-based structures of equal and constant lengths—is the canonical model organism for studying size control of organelles. Experiments have identified motor-driven transport of tubulin to the flagella tips as a key component of their length control. Here we consider a class of models whose key assumption is that proteins responsible for the intraflagellar transport (IFT) of tubulin are present in limiting amounts. We show that the limiting-pool assumption is insufficient to describe the results of severing experiments, in which a flagellum is regenerated after it has been severed. Next, we consider an extension of the limiting-pool model that incorporates proteins that depolymerize microtubules. We show that this ‘active disassembly’ model of flagellar length control explains in quantitative detail the results of severing experiments and use it to make predictions that can be tested in experiments.
Cocaine-induced endocannabinoid signaling mediated by sigma-1 receptors and extracellular vesicle secretion
Authors: Nakamura Yoki , Dryanovski Dilyan I , Kimura Yuriko , Jackson Shelley N , Woods Amina S , Yasui Yuko , Tsai Shang-Yi , Patel Sachin , Covey Daniel P , Su Tsung-Ping , Lupica Carl R
Published: October 2019

Cocaine is an addictive drug that acts in brain reward areas. Recent evidence suggests that cocaine stimulates synthesis of the endocannabinoid 2-arachidonoylglycerol (2-AG) in midbrain, increasing dopamine neuron activity via disinhibition. Although a mechanism for cocaine-stimulated 2-AG synthesis is known, our understanding of 2-AG release is limited. In NG108 cells and mouse midbrain tissue, we find that 2-AG is localized in non-synaptic extracellular vesicles (EVs) that are secreted in the presence of cocaine via interaction with the chaperone protein sigma-1 receptor (Sig-1R). The release of EVs occurs when cocaine causes dissociation of the Sig-1R from ADP-ribosylation factor (ARF6), a G-protein regulating EV trafficking, leading to activation of myosin light chain kinase (MLCK). Blockade of Sig-1R function, or inhibition of ARF6 or MLCK also prevented cocaine-induced EV release and cocaine-stimulated 2-AG-modulation of inhibitory synapses in DA neurons. Our results implicate the Sig-1R-ARF6 complex in control of EV release and demonstrate that cocaine-mediated 2-AG release can occur via EVs.
Mitochondrial fusion is required for spermatogonial differentiation and meiosis
Authors: Varuzhanyan Grigor , Rojansky Rebecca , Sweredoski Michael J , Graham Robert LJ , Hess Sonja , Ladinsky Mark S , Chan David C
Published: October 2019

Differentiating cells tailor their metabolism to fulfill their specialized functions. We examined whether mitochondrial fusion is important for metabolic tailoring during spermatogenesis. Acutely after depletion of mitofusins Mfn1 and Mfn2, spermatogenesis arrests due to failure to accomplish a metabolic shift during meiosis. This metabolic shift includes increased mitochondrial content, mitochondrial elongation, and upregulation of oxidative phosphorylation (OXPHOS). With long-term mitofusin loss, all differentiating germ cell types are depleted, but proliferation of stem-like undifferentiated spermatogonia remains unaffected. Thus, compared with undifferentiated spermatogonia, differentiating spermatogonia and meiotic spermatocytes have cell physiologies that require high levels of mitochondrial fusion. Proteomics in fibroblasts reveals that mitofusin-null cells downregulate respiratory chain complexes and mitochondrial ribosomal subunits. Similarly, mitofusin depletion in immortalized spermatocytes or germ cells in vivo results in reduced OXPHOS subunits and activity. We reveal that by promoting OXPHOS, mitofusins enable spermatogonial differentiation and a metabolic shift during meiosis.
A single regulator NrtR controls bacterial NAD+ homeostasis via its acetylation
Authors: Gao Rongsui , Wei Wenhui , Hassan Bachar H , Li Jun , Deng Jiaoyu , Feng Youjun
Published: October 2019

Nicotinamide adenine dinucleotide (NAD+) is an indispensable cofactor in all domains of life, and its homeostasis must be regulated tightly. Here we report that a Nudix-related transcriptional factor, designated MsNrtR (MSMEG_3198), controls the de novo pathway of NAD+biosynthesis in M. smegmatis, a non-tuberculosis Mycobacterium. The integrated evidence in vitro and in vivo confirms that MsNrtR is an auto-repressor, which negatively controls the de novo NAD+biosynthetic pathway. Binding of MsNrtR cognate DNA is finely mapped, and can be disrupted by an ADP-ribose intermediate. Unexpectedly, we discover that the acetylation of MsNrtR at Lysine 134 participates in the homeostasis of intra-cellular NAD+ level in M. smegmatis. Furthermore, we demonstrate that NrtR acetylation proceeds via the non-enzymatic acetyl-phosphate (AcP) route rather than by the enzymatic Pat/CobB pathway. In addition, the acetylation also occurs on the paralogs of NrtR in the Gram-positive bacterium Streptococcus and the Gram-negative bacterium Vibrio, suggesting that these proteins have a common mechanism of post-translational modification in the context of NAD+ homeostasis. Together, these findings provide a first paradigm for the recruitment of acetylated NrtR to regulate bacterial central NAD+ metabolism.
Certificering og kvalificering
Authors: Duch Henriette
Published: October 2019

Nye lærere certificeres og kvalificeres gennem uddannelse til professionen som lærer. De vurderes ofte på flere måder gennem deres uddannelsesforløb, og forskning viser, at der findes en række forskellige metodiske tilgange til at kvalificere sådanne forløb. For gymnasielærere og erhvervsskolelærere i Danmark gælder, at de skal tage en pædagogiske uddannelse som forudsætning for deres undervisning på en ungdomsuddannelse. Rammerne for de to uddannelser er forskellige, men der indgår i begge uddannelser en afsluttende skriftlig opgave. Sådanne opgaver er indgår i datamaterialet indsamlet i to kvalitative studier. På baggrund af Bernstiens teori om den pædagogiske anordning og Dahler-Larsens opdeling af evaluering som kontrol og som konstitutiv analyseres indhold, karakterer for og litteraturvalg i disse afsluttende opgaver.

Konklusionen er, at form og indhold i opgaverne varierer mellem de to uddannelser, ligesom karakterniveauer er forskelligt. Desuden bygger de studerende på de to uddannelser på forskellige litteratur i forhold til rettethed mod sektor og målgruppe på ungdomsuddannelser, anvendelse af internationale referencer samt metodisk og videnskabsteoretisk orienteret litteratur. På den baggrund diskuteres skriftlige opgavers betydning for læreres professionalisering gennem læreruddannelser.
INFLUENCE OF SCATTERED NÉRÉ AND KARITÉ TREES ON MICROCLIMATE, SOIL FERTILITY AND MILLET YIELD IN BURKINA FASO
Authors: Jonsson K. , Ong C. K. , Odongo J. C. W.
Published: July 2002

Microclimate and soil fertility were measured under and away from the canopies of small and large scattered trees of néré (Parkia biglobosa) and karité (Vitellaria paradoxa) to explain their influence on pearl millet (Pennisetum glaucum). During the rainy season, photosynthetically active radiation under both tree canopies was reduced to 24% of incident radiation but, surprisingly, millet biomass was not significantly different from that in the open. Millet seedlings under the tree canopies experienced only 1–9 h week−1 of supra-optimal temperatures (>40 °C) compared with 27 h week−1 in the open. Reduction in windspeed and soil evaporation was observed under the trees but was unlikely to have a significant influence on millet growth since water was not limiting (rainfall = 920 mm).

Exchangeable potassium, percentage carbon and pH were significantly higher and δ13C lower in soil under trees than in the open. Nitrogen levels were not significantly higher than in the open except for large néré trees. Carbon derived from C3 plants, calculated from δ13C, was significantly higher in soils under trees than in the open and is recommended as a good indicator of the influence of trees on soils. These results show that the combined beneficial effects of temperature modifications and soil fertility could exceed the negative effect of tree shade.
The evolutionary genetics of adaptation: a simulation study
Authors: ALLEN ORR H.
Published: July 2002

It is now clear that the genetic basis of adaptation does not resemble that assumed by the
infinitesimal model. Instead, adaptation often involves a modest number of factors of large effect
and a greater number of factors of smaller effect. After reviewing relevant experimental studies, I
consider recent theoretical attempts to predict the genetic architecture of adaptation from first
principles. In particular, I review the history of work on Fisher's geometric model of adaptation,
including recent studies which suggest that adaptation should be characterized by exponential
distributions of gene effects. I also present the results of new simulation studies that test the
robustness of this finding. I explore the effects of changes in the distribution of mutational effects
(absolute versus relative) as well as in the nature of the character studied (total phenotypic effect
versus single characters). The results show that adaptation towards a fixed optimum is generally
characterized by an exponential effects trend.

The situation to which these studies point is not one of a
large number of genes all with more or less equal effect. It
seems, rather, that a small number of genes with large effects
are responsible for most of the response, the remainder of
the response being due to a larger number of loci with small
effects.

D. S. Falconer (1981)
Properties of spontaneous mutations affecting quantitative traits
Authors: GARCÍA-DORADO A. , LÓPEZ-FANJUL C. , CABALLERO A.
Published: July 2002

Recent mutation accumulation results from invertebrate species suggest that mild deleterious
mutation is far less frequent than previously thought, implying smaller expressed mutational loads.
Although the rate (λ) and effect (s) of very slight deleterious mutation remain unknown, most
mutational fitness decline would come from moderately deleterious mutation (s ≈ 0·2, λ ≈ 0·03),
and this situation would not qualitatively change in harsh environments. Estimates of the average
coefficient of dominance (h¯) of non-severe deleterious mutations are controversial. The typical
value of h¯ = 0·4 can be questioned, and a lower estimate (about 0·1) is suggested. Estimated
mutational parameters are remarkably alike for morphological and fitness component traits
(excluding lethals), indicating low mutation rates and moderate mutational effects, with a
distribution generally showing strong negative asymmetry and little leptokurtosis. New mutations
showed considerable genotype–environment interaction. However, the mutational variance of
fitness-component traits due to non-severe detrimental mutations did not increase with
environmental harshness. For morphological traits, a class of predominantly additive mutations
with no detectable effect on fitness and relatively small effect on the trait was identified. This
should be close to that responsible for standing variation in natural populations.