bluuebunny/crossref_metadata_2025 huggingface dataset:
KESULITAN MAHASISWA CALON GURU FISIKA DALAM MEREPRESENTASIKAN KONSEP LISTRIK MAGNET
Authors: Handayani Wahyuni , Setiawan Wawan , Sinaga P , Suhandi Andi
Published: April 2020

Communication in science is multimodal (verbal and visual). Representation skills are one of the communication skills in science. A physics teacher is required to have representation skills so that the students more easily to acsess the concept that they have to lean and the teacher  communicate physics concepts more easily to his students. This study examines the representation skills of preservice physics teacher. Three aspects of representation skills, that examined are: 1) the skill of making a single mode representation, 2) the skills of translation between representation modes and 3) multi-representation skills. The instrument used to measure representation skills has been validated and used to measure representation skills of preservice physics teacher in Listrik-Magnet courses. The results showed that the preservive physics student have difficulty in making all of the aspect of representation. It is occured because there has never been learning related to representation or assessment skills that specifically test their representation skills
MENGANALISIS HUBUNGAN RODA-RODA MENGGUNAKAN APLIKASI TRACKER
Authors: Ratna Nurzaman Resy Fauziah
Published: April 2020

Dalam kehidupan sehari-hari, banyak peristiwa Gerak Melingkar Beraturan yang dapat kita temui. Dalam penelitian ini, kami mencoba untuk membuat alat peraga sederhana yang terkait dengan hubungan roda-roda dari alat dan bahan yang dapat kita temui dalam kehidupan sehari-hari. Tujuan penelitian ini adalah membuktikan hubungan roda-roda menggunakan aplikasi tracker. Metode penelitian yang digunakan adalah eksperimen dengan membuat alat peraga sederhana yang dianalisis melalui video menggunakan aplikasi tracker. Hasil analisis menunjukkan bahwa roda-roda yang dihubungkan dengan tali memiliki kecepatan linear yang sama, akan tetapi untuk roda-roda sepusat kecepatan angularnya berbeda. Hasil penelitian ini dapat dikembangkan dengan menggunakan alat dan bahan yang lebih baik dari yang kami gunakan.
Development of an algorithm to train artificial neural networks for intelligent decision support systems
Authors: Sova Oleg , Turinskyi Oleksandr , Shyshatskyi Andrii , Dudnyk Volodymyr , Zhyvotovskyi Ruslan , Prokopenko Yevgen , Hurskyi Taras , Hordiichuk Valerii , Nikitenko Anton , Remez Artem
Published: April 2020

The algorithm to train artificial neural networks for intelligent decision support systems has been constructed. A distinctive feature of the proposed algorithm is that it conducts training not only for synaptic weights of an artificial neural network, but also for the type and parameters of membership function. In case of inability to ensure the assigned quality of functioning of artificial neural networks due to training of parameters of artificial neural network, the architecture of artificial neural networks is trained. The choice of the architecture, type and parameters of membership function occurs taking into consideration the computation resources of the facility and taking into consideration the type and the amount of information entering the input of an artificial neural network. In addition, when using the proposed algorithm, there is no accumulation of an error of artificial neural networks training as a result of processing the information entering the input of artificial neural networks.Development of the proposed algorithm was predetermined by the need to train artificial neural networks for intelligent decision support systems in order to process more information given the unambiguity of decisions being made. The research results revealed that the specified training algorithm provides on average 16–23 % higher the efficiency of training artificial neural networks training that is on average by 16–23 % higher and does not accumulate errors in the course of training. The specified algorithm will make it possible to conduct training of artificial neural networks; to determine effective measures to enhance the efficiency of functioning of artificial neural networks. The developed algorithm will also enable the improvement of the efficiency of functioning of artificial neural networks due to training the parameters and the architecture of artificial neural networks. The proposed algorithm reduces the use of computational resources of decision support systems. The application of the developed algorithm makes it possible to work out the measures aimed at improving the effectiveness of training artificial neural networks and to increase the efficiency of information processing
Batken’de (Kırgızistan) ve Batman’da (Türkiye) Ters Lale Efsaneleri
Authors: SATICIOĞLU Hüseyin
Published: April 2020

Lalenin Türk kültür, sanat ve edebiyat hayatında olduğu kadar halk anlatılarında ve inancında eşsiz bir yeri vardır. Sert iklim koşullarında yaşayan Türkler için lale yeniden doğuşun, uyanışın, hayatın, bereketin simgesi ve kışın ardından gelen baharın müjdecisi sayılmaktadır. Ters lale ise halk anlatılarında ve inancında şekline bağlı olarak hüznü, acıyı ve gözyaşını temsil etmektedir. Kırgızistan’ın Batken ilinde ve Türkiye’nin birçok bölgesinde ters lale ile ilgili çeşitli efsaneler söylenmektedir. Batken’de bir dağa, kayaya ve köye adı verilen Aygül çiçeği eyaletin en önemli sembollerindendir. Türkiye’nin Doğu Anadolu Bölgesinde yetişen ve çeşitli adlarla anılan ters lale Batman’ın Sason ve Kozluk ilçelerinde kültürel ve maddi bir değerdir. Aynı familyadan olan bu endemik türler yaşam alanları ve dış görünüşleri açısından birbirine oldukça benzemektedir. Bu çiçeklere bağlı olarak Batken’de “Aygültaş” ve Batman’da “Ters Lale” adında bir kayalık etrafında cereyan eden olay örgüleri, şahıs kadroları ve içerikleri açısından benzerlik gösteren iki farklı efsane anlatılagelmektedir. Bu efsanelerdeki benzerlikler ve farklılıklar hangi sebeplerden kaynaklanmış olabilir? Göç, kültür ve halk anlatısı olguları arasında nasıl bir ilişki vardır? Türkiye Türklerinin yüzyıllar önce Anadolu’ya ilk yerleştikleri bölge olan Doğu Anadolu’daki bir ters lale efsanesiyle atayurtlarındaki efsanenin karşılaştırmalı olarak incelenmesi Türk Dünyasındaki ortak folklor, kültür, inanç ve değerler konusunda ipuçları verecektir. Söz konusu efsaneler olay örgüsü, şahıs kadrosu ve içerikleri açısından halkbilimi kuram ve yaklaşımları çerçevesinde incelenerek karşılaştırılmaya çalışılmıştır.
Analysis of the guiding rules of the nurse technician’s practice in Brazil
Authors: Araújo Marília Souto de , Medeiros Soraya Maria de , Costa Edilma de Oliveira , Oliveira Jonas Sâmi Albuquerque de , Costa Raphael Raniere de Oliveira , Sousa Yanna Gomes de
Published: April 2020

ABSTRACT Objectives: to analyze the normative bases that guide the nurse technician’s practice, clarifying how the performance of this category happens. Methods: this is a qualitative study of exploratory and descriptive nature and of documentary type, held on the basis of the resolutions of the Brazilian Federal Nursing Council (Cofen). From a total of 364 resolutions published from 1975 to 2018, 15 accounted for the objective of the study and were therefore selected. Results: this study systematized two analytical categories: areas of practice of the nurse technician, according to Cofen resolutions; and description of the professional’s activities based on the resolutions. Final Considerations: the analysis of the normative bases that guide the nurse technician’s practice leads to the conclusion of a possible frailty of theoretical and normative content to justify the practice of these professionals.
Nursing outcome “airway permeability” in postoperative patients
Authors: Sousa Giana Gislanne da Silva de , Pascoal Lívia Maia , Nunes Simony Fabíola Lopes , Lima Neto Pedro Martins , Santos Francisco Dimitre Rodrigo Pereira , Santos Neto Marcelino , Ferreira Adriana Gomes Nogueira
Published: April 2020

ABSTRACT Objectives: to evaluate the evolution of clinical indicators that characterize airway permeability in patients in the postoperative period of thoracoabdominal surgeries and to analyze their relationship with the occurrence of the diagnosis “ineffective airway clearance”. Methods: descriptive, quantitative, longitudinal research with 60 patients who were followed for five consecutive days. Eleven indicators of the nursing outcome “respiratory status: airway permeability” were used. Results: on the first day of evaluation, the most compromised indicators were: respiratory rate, cough, depth of breath and use of accessory muscles. During follow-up, most of the indicators presented a slight deviation from normal variation and, in the last evaluation, there was a predominance of indicators with some degree of impairment. Conclusions: with the aid of the Nursing Outcomes Classification, it was observed that patients submitted to thoracoabdominal surgeries may present compromised airway permeability even days after surgery.
Social representations of transsexual women living with HIV/AIDS
Authors: Abreu Paula Daniella de , Araújo Ednaldo Cavalcante de , Vasconcelos Eliane Maria Ribeiro de , Ramos Vânia Pinheiro , Moura Jefferson Wildes da Silva , Santos Zailde Carvalho dos , Santos Claudia Benedita dos
Published: April 2020

ABSTRACT Objectives: identify the social representations of transsexual women living with HIV/AIDS. Methods: this is a qualitative descriptive exploratory study, based on the theory of social representations, conducted with six HIV/AIDS seropositive transsexual women from a hospital for patients with HIV/AIDS. For data collection, semi-structured interviews were conducted and later transcribed and analyzed with the help of Iramuteq (version 0.7) to produce a dendrogram of the descending hierarchical classification. Results: data were grouped into three classes: social thought and health/disease process; subjectivity and identity coping; and social determination and the context of vulnerability. Final Considerations: the elements of social representations were identified, based on commonsense knowledge, resulting from the way of thinking and acting and associated with the syndrome and social actors and sectors of the daily life of transsexual women. This study highlights the relevance of representational processes for humanized health care.
Income and out-of-pocket health expenditure in living arrangements of families with older adults in Brazil
Authors: Faustino Christine Grutzmann , Levy Renata Bertazzi , Canella Daniela Silva , Oliveira César de , Novaes Hillegonda Maria Dutilh
Published: April 2020

Abstract: The main objective of this study was to characterize household sociodemographic and economic patterns of different living arrangements of families with older adults in Brazil and their relationship with income and out-of-pocket health expenditure. Data were extracted from the 2008-2009 Brazilian Household Budget Survey (POF, in Portuguese) database of the Brazilian Institute of Geography and Statistics. Families with older adults represented 28% of all families, being smaller and having higher average income when compared to families without older adults. Older adults were head of the household in 85% of the families, with income based mainly on social protection policies. The families with older adult or couple as head of the household had significantly higher average monthly income. The proportion of out-of-pocket health expenditure per income quintile per capita was higher for families with one older adult or couple as head of the household, when compared to families without older adult as head of the household and even more in families without older adults at all. These findings allow the identification of potential positive impacts on the quality of life of families with older adults in Brazil. The higher household income of families with older adults is a consequence of the expansion of inclusive social protection policies for this population in the 2000s in Brazil, especially for families with lower average income levels, representing 4/5 of this population. The economic and political crisis in the 2010s have probably reduced these families’ relative advantage, and this study will compare with results of the next survey.
Satisfaction with food-related life and life satisfaction: a triadic analysis in dual-earner families
Authors: Schnettler Berta , Miranda-Zapata Edgardo , Grunert Klaus G. , Lobos Germán , Lapo María , Hueche Clementina
Published: April 2020

This study explored the spillover and crossover associations between satisfaction with food-related life and life satisfaction in mothers, fathers and adolescent children in dual-earned families. This is a cross-sectional design study with mothers, fathers and children surveyed in Temuco, Chile. The participants were 303 dual-earner parents and their adolescent children (mean age 13.3 years, 51.5% female). Actor-partner Interdependence Model (APIM) and structural equation modeling were used to explore spillover (actor effect) and crossover (partner effect) associations among family members. As a result, fathers’ satisfaction with food-related life was positively associated with their own life satisfaction (p ≤ 0.01), as well as with their partner’s (mother’s) satisfaction with life (p ≤ 0.05), but not with their adolescent child’s life satisfaction (p > 0.1). Mothers and children presented positive spillovers between their own levels of satisfaction with food-related life and life satisfaction (p ≤ 0.01). No crossover effects were found between mothers and children (p > 0.1). This study results underscore the positive association between satisfaction with food-related life and life satisfaction among members of dual-earner families with adolescent children. Special efforts should be made by dual-earner parents to improve the variables related to their satisfaction with food-related life as well as their children’s satisfaction.
Avaliação neurocomportamental e níveis de acetilcolinesterase cerebral em ratos expostos subcronicamente ao fipronil
Authors: Barretto M.L.M. , Horta D.F. , Anselmo F. , Godinho A.F. , Oliveira A.A.F.
Published: April 2020

RESUMO O fipronil é um inseticida de toxicidade seletiva amplamente empregado na agricultura e na medicina veterinária. Porém, há relatos de efeitos neurotóxicos dessa substância, que geram prejuízos para vertebrados. Avaliou-se a atividade locomotora, a coordenação motora e a atividade da enzima acetilcolinesterase cerebral em ratos expostos ao fipronil. Ratos Wistar machos adultos (n=15) receberam fipronil em dose de 30mg/kg, por via oral, durante 15 dias; o grupo controle (n=15) foi tratado com solução fisiológica, por via oral, no mesmo período. No 16° dia de experimentação, os animais foram submetidos aos testes de arena de campo aberto e hole board. No 17° dia, foram anestesiados e eutanasiados, procedendo-se à coleta de órgãos, e posteriormente foi feita a avaliação da AChE cerebral. A exposição ao fipronil não provocou alterações significativas sobre a coordenação motora e a atividade locomotora, porém gerou inibição significativa da atividade da acetilcolinesterase cerebral. Esses achados sugerem que o fipronil pode provocar efeitos neurotóxicos em curto prazo, os quais podem ser exacerbados caso a exposição seja prolongada.
Acute-on-chronic subdural cranial hematoma in a dog: case report
Authors: Bonelli M.A. , Silva I.C.C. , Fernandes T.H.T. , Schwarz T. , Costa F.S.
Published: April 2020

ABSTRACT A ten-month-old male Yorkshire terrier dog was evaluated via CT four months after traumatic brain injury. The head CT scan showed dilated ventricles associated with a peripheral crescent-shaped collection of blood near the right parietal bone with a mineralized area. The visceral layer of the hematoma was hyperattenuating on the native scan and showed moderate contrast enhancement after administration of intravenous iodinated contrast medium. No fractures were identified in the calvarium. These findings were compatible with acute-on-chronic calcified subdural hematoma, which have been described with more detail in humans. This is the first report to include the description of the imaging findings related to this condition using computed tomography in a dog.
Efeito da somatotropina bovina recombinante (rbST) na produção in vivo e na maturação in vitro de oócitos bovinos da raça Sindi
Authors: Ribeiro L.G.M. , Bastos B.D.M. , Silva M.N.P. , Oliveira R.A. , Pinto A.F.B.P. , Lima I.R.A. , Melo L.H.A. , Sousa R.K.C. , Gonçalves P.R. , Bonfa H.C. , Cordeiro M.F. , Nogueira D.M. , Barbosa R.S. , Lopes Júnior E.S.
Published: April 2020

RESUMO A fim de avaliar o efeito de diferentes doses da rbST sobre a dinâmica folicular, a produção e a maturação in vitro de oócitos, 20 vacas Sindi, divididas em três grupos, receberam um dispositivo de progesterona intravaginal, estradiol e PGF2α, além de 2mL de solução salina (grupo controle), 250 (grupo rbST 250) ou 500mg de rbST (grupo rbST 500). Cinco dias depois, realizou-se a ovum pick up, e os complexos cumulus-oócitos (CCOs) recuperados foram selecionados, classificados e maturados in vitro. Os dados de contagem foram comparados pelo procedimento glht (General Linear Hypothesis Test), e os dados em porcentagem foram submetidos ao qui-quadrado, no programa estatístico R, onde as diferenças foram consideradas significativas quando P<0,05. Não houve diferença (P>0,05) entre os grupos quanto à quantidade de folículos e à taxa de maturação. Os grupos rbST 250 e rbST 500 foram significativamente superiores (P<0,05) ao grupo controle em relação ao número de folículos grandes (0,42±0,20 vs. 0). O grupo rbST 500 apresentou maior (P<0,05) porcentagem de oócitos viáveis (91,52%) do que os grupos controle (67,85%) e rbST 250 (53,33%). A rbST aumenta o número de folículos grandes, e 500mg de rbST aumentam a porcentagem de oócitos viáveis em vacas Sindi.
Identifying hydric, electrolytic and acid-base imbalances through traditional and quantitative approaches in dogs with hemorrhagic gastroenteritis
Authors: Hasuda A.L. , Flaiban K.K.M.C. , Lisbôa J.A.N. , Gomes L.A. , Polizelli I.G. , Santana L.S.
Published: April 2020

ABSTRACT Vomiting and diarrhea are two important clinical signs that can cause significant electrolytic and acid-base imbalances. The purposes of this study were to characterize hydric, electrolytic and acid-base disorders presented by puppies with hemorrhagic gastroenteritis and to compare the traditional and quantitative approaches to acid-base status interpretation. Sixty-one animals with a history of vomiting and/or diarrhea were used in this study and the following tests were performed: complete blood count, total plasma protein concentration and hemogasometry. Mean, standard deviation and Kappa values were calculated. The imbalances characterized by both approaches were: 42 (69%) animals without imbalance, 17 (28%) with metabolic alkalosis and 2 (3%) with metabolic acidosis by the traditional approach and 17 (28%) dogs without imbalance, 26 (43%) with metabolic alkalosis and 18 (29%) with metabolic acidosis by the quantitative approach. The agreement calculated between two approaches coincide in 28 cases, with a moderate Kappa value equivalent to 0.459. The most found imbalances were metabolic alkalosis, hypokalemia, and mild dehydration. Most of acid-base disturbances were not identified by the traditional approach, whereas by the quantitative approach, they were easily determined. Thus quantitative approach proved to be superior in identification of possible acid-base imbalances.
Ultrasonographic diagnosis of twins in two pregnant bitches: case report
Authors: Pavan L. , Gasser B. , Santos V.J.C. , Maronezi M.C. , Silva P. , Assis A.R. , Garcia P.H.S. , Martins Junior R. , Uscategui R.A.R. , Feliciano M.A.R.
Published: April 2020

ABSTRACT Multiple pregnancies in humans account for only 3% of pregnancies, 97-98% of which are twin pregnancies and the morbimortality is higher in the monochorionic twins when compared to dichorionic ones. The canine species is naturally multiparous, but the diagnosis of monochorionic twin pregnancy is not common. The objective of this report was to describe the ultrasonographic diagnosis of monochorionic twin pregnancies in two bitches [Pug (case 1) and Shih tzu (case 2)]. It was possible to verify the presence of one gestational vesicle containing two fetuses in each female by observing two heads or two bodies within the same placental site. These fetuses presented adequate viability and normal organogenesis. Their development was similar to the other fetuses. In case 1 they were stillborn and smaller than the other five live-born fetuses. The twins in case 2 were born alive, but they also appeared smaller when compared to the littermates. The gestational risks associated with this condition in pregnant bitches are still unknown, however, there are reports of fetal death in monochorionic pregnancies in this species. Therefore, ultrasonographic exam during pregnancy allows an early monochorionic diagnosis and monitoring the fetal viability could bring health benefits to both the female and the littermates.
Maturation, morphological, motor and technical characteristics of under 16 female track and field athletes
Authors: Freitas Jefferson Verbena de , Werneck Francisco Zacaron , Souza Renato Siqueira de , Castro Phelipe Henrique Cardoso de , Figueiredo António José , Lima Jorge Roberto Perrout de
Published: April 2020

Abstract There is growing interest in identifying morphological, motor, maturation characteristics, as well as their changes, of children and adolescents in systematized training in various sports. Knowledge of these characteristics is important for coaches and researchers because they provide parameters for assessing youth development during training. For track and field, studies on the category under 16 are scarce. Thus, the objectives of this study are to describe the profile and to design a percentile table of morphological, motor, maturation and event-specific variables of under 16 athletes. 105 young athletes were evaluated on two consecutive days. On the first day, an anamnesis of athletes and coaches was performed. Anthropometric and anaerobic measurements were analyzed in shot put, long jump, 800 m run. On the second day, flexibility, vertical impulse, upper limb strength, speed and maximal aerobic speed were evaluated. The biological maturation was evaluated by the percentage of the predicted height. A table with percentiles was prepared with the data of all athletes. Another table with the results of the whole group plus mean and standard deviation was prepared. A last table was prepared containing data divided by group of sports events. The morphological variables presented differences between the groups as to body mass, BMI and sum of skinfolds. Significant differences were observed only for the motor variable VMA. No significant differences were observed only for long jump. When divided by groups, it was evident that throwers are different from the other athletes in some morphologic variables and in specific sports events.
The effects of the Paleolithic Diet on obesity anthropometric measurements
Authors: Parente Nara de Andrade , Sampaio Helena Alves de Carvalho , Carioca Antônio Augusto Ferreira , Brito Filipe Oliveira
Published: April 2020

Abstract Comparing the effects of Paleolithic Diet (PD) and of a Guidelines Substantiated Diet (GSD) on anthropometric indicators of obese individuals. Randomized clinical trial. Obese patients were divided into two groups based on dietary prescription: PD and GSD. These diets encompassed 82 and 73 patients, respectively, who were followed-up for 60 days. Anthropometric measurements were taken before the beginning of the trial, at the 30th day of it and at the end of the experimental period. At the 60th experimental day, there was 26.8% treatment abandonment by individuals in group PD and 19.2% by the ones in group GSD; there was not difference between groups (p = 0.684). Weight and height measurements were taken in order to determine body mass index (BMI), waist circumference (WC) and hip circumference (HC), which allowed determining the waist/hip ratio (WHR). There was no initial difference between groups in demographic, socioeconomic, exercising and anthropometric variables (p > 0.05). Group PD recorded the highest weight (p = 0.003), BMI (p = 0.002) and WC (p = 0.033) values at the 30th experimental day. Group PD kept the highest weight loss at the 60th day (p < 0,001), as well as the highest BMI (p < 0.001), WC (p = 0.002) and WHR (p = 0.002) reduction. PD is a feasible option to treat obesity, it led to reduced anthropometric markers. Other studies are necessary to assure the safety of its use for longer periods of time.
Feeding preference of Euborellia annulipes to Plutella xylostella: effects of temperature and prey development stage
Authors: Nunes Gilmar da Silva , Paulo Hágabo Honorato de , Dias Welliny Soares Rocha , Bortoli Sergio Antonio De
Published: April 2020

ABSTRACT The ring-legged earwig Euborellia annulipes has been studied as a natural enemy of pest-insects and a potential predator of diamondback moth. Temperature is an important factor that mediates the pest population density and may affect the predator-prey relationship dynamics. This study aimed to evaluate the effect of the temperature and development stage of Plutella xylostella individuals on the feeding preference of E. annulipes females. Three temperatures (18 ºC, 25 ºC and 32 ºC), two development stages (larvae and pupae) and two feeding conditions related to the prey capture (with or without choice) were assessed. No matter the temperature, ring-legged earwig females showed a preference for eating larvae, instead of pupae. The temperature and choice conditions influenced the amount of consumed preys, but only for larvae (not for pupae). The lowest larvae consumption was observed at 18 ºC, in both prey capture conditions.
Compatibility and yield of ‘Santa Cruz 47’ okra onto rootstocks of the Malvaceae family
Authors: Andrade Francisco Laurimar do Nascimento , Monteiro Silvia Marcela Ferreira , Muniz Carla Caroline Santana , Gomes Rafaelle Fazzi , Santos Lucas da Silva
Published: April 2020

ABSTRACT The little-known use of okra grafting, mainly to incorporate nematode resistance, requires evaluation of interspecific compatibilities. This study aimed to determine the compatibility of the okra ‘Santa Cruz 47’ cultivar grafted onto different rootstocks of the Malvaceae family. The research was divided into two experimental stages, with the treatments consisting of non-grafted, self-grafted or grafted okra plants onto rootstocks of mallow, roselle and pima cotton. In the first stage, a completely randomized design was used, with four replications and seedlings grown in a humidity chamber. In the second stage, the seedlings were transplanted to a greenhouse and a randomized block design was used, with five replications. The results of the first stage demonstrated that the self-grafting provided the best results for the growth characteristics assessed, except for the diameter of the grafted region. There was no difference among the treatments for the graft survival rate. In the second stage, the use of roselle as a rootstock enabled an adequate vegetative development, but did not differ from the treatments of self-grafting and mallow rootstock for the graft survival rate. The treatments did not differ for fruit diameter, length and average mass. Grafts onto roselle were the most precocious ones, with estimated means for production per plant (478.75 g), commercial yield (10.07 t ha-1) and total yield (10.64 t ha-1) similar to those observed for self-grafted and non-grafted plants. Hence, among the assessed rootstocks, roselle was identified as the most promising one for grafting with okra.
Vitamin D Toxicity
Authors: Lim Kenneth , Thadhani Ravi
Published: April 2020

Abstract Fortification of food products with vitamin D was central to the eradication of rickets in the early parts of the 20th century in the United States. In the subsequent almost 100 years since, accumulating evidence has linked vitamin D deficiency to a variety of outcomes, and this has paralleled greater public interest and awareness of the health benefits of vitamin D. Supplements containing vitamin D are now widely available in both industrialized and developing countries, and many are in the form of unregulated formulations sold to the public with little guidance for safe administration. Together, this has contributed to a transition whereby a dramatic global increase in cases of vitamin D toxicity has been reported. Clinicians are now faced with the challenge of managing this condition that can present on a spectrum from asymptomatic to acute life-threatening complications. This article considers contemporary data on vitamin D toxicity, and diagnostic and management strategies relevant to clinical practice.
Collapsing focal segmental glomerulosclerosis probably triggered by dengue virus infection - two case reports
Authors: Queiroz Patrícia Cruz , Jorge Ana Elisa Souza , Mourão Plínio Henrique Vaz , Penido Maria Goretti Moreira Guimarães
Published: April 2020

Abstract The reported cases describe the association between collapsing focal segmental glomerulosclerosis (FSGS) and acute dengue virus infection. In both cases, patients were diagnosed with dengue virus infection and had a severe kidney disease, with nephrotic syndrome and acute kidney injury. Kidney biopsy was performed and showed collapsing FSGS. The first patient, a 27-year-old man, was diagnosed with dengue virus infection and developed nephrotic syndrome after two weeks of illness. He was treated with methylprednisolone for three days and intravenous furosemide. This patient evolved well, although his renal function did not fully recover. The second patient, a 32-year-old man, was diagnosed with a milder clinical presentation of dengue virus infection. He had a past medical history of nephrotic syndrome in childhood, which might have caused its relapse. This patient was treated with intravenous furosemide and also did not fully recover renal function. These cases highlight the possible implication of dengue virus infection in the etiology of collapsing variant of FSGS. Healthcare professionals should be prepared to identify similar cases.
Evaluation of Stadium Locations Using AHP and TOPSIS Methods
Authors: KARAKÖPRÜ Uğur Orhan , KABADURMUŞ Özgür
Published: April 2020

With
the industrialization of the sports, stadiums started to mean more than a venue
for playing games. Therefore, choosing the best location of a stadium is an
important problem for the sports clubs. In this paper, a two-step hierarchical
multi-criteria decision-making model has been developed to evaluate stadium
locations. In the first step, Analytic Hierarchy Process (AHP) has been used to
determine the criteria weights. In the second step, TOPSIS has been used to
evaluate the alternatives. Four main criteria have been identified to evaluate
alternatives: (1) stadium capacity, (2) construction cost, (3) accessibility
and (4) distances. As a case study, the proposed model has been applied to
three new stadium constructions in Izmir, Turkey.
Yüksek ve Düşük Teknolojili Sektörlerde Piyasaya Girişin Belirleyicileri
Authors: GÜREL GÜNAL Gülçin , DELİKTAŞ Ertuğrul
Published: April 2020

Bu çalışmada, sürdürülebilir bir büyümenin en önemli unsurlarından birisi olan imalat sanayii, piyasa yapısı analizi çerçevesinde piyasaya giriş modeli oluşturularak incelenmektedir. Bu çerçevede kullanılan modellerde düşük teknolojili ve yüksek teknolojili imalat sanayii sektörleri, 2003-2015 yılları için lojistik regresyon modeli kullanılarak analiz edilmektedir. Analiz sonuçlarına göre piyasaya girişte, farklı teknoloji düzeyindeki firmalar farklı değişkenlerden etkilenmektedir. Diğer taraftan makroekonomik gelişmelerin, firmaların sektöre giriş kararında firma ve piyasa özelindeki gelişmelerden daha etkili olduğu da görülmektedir. Özellikle teknoloji yoğun firmaların makroekonomik gelişmelerden çok fazla etkilendiği dikkat çekmektedir. Çalışmanın, firmaların piyasaya giriş kararlarının mikro ve makro düzeyde nasıl değiştiğini görebilmek adına politika yapıcılar için önemli olduğu düşünülmektedir.
Is Gossip Associated with Nurses’ Job Performance Perceptions?
Authors: DURMUŞ Ayhan , KIRILMAZ Harun , ŞAHİN Özlem
Published: April 2020

This study seeks to reveal the relationship
between nurse job performance and gossip level. The data were collected from
211 nurses working in training and research hospitals and public hospitals
affiliated with the Provincial Directorate of Health in Sakarya province of
Turkey between April and June 2018. The data collection tool is a scale
consisting of three sections that are Nurse Performance Scale, Gossip
Questionnaire, and Introductory Information Form. For analysis, independent
sample t test, one-way variance analysis, and correlation and regression
analyses were employed. The study showed that there is a negative,
insignificant relationship between nurses’ gossip perceptions and performance
perceptions (r= -0.134; p>0.05). It is possible to say that despite the
negative relationship between influences, one of the sub-dimensions of gossip,
and nurse performance, informal communication among nurses does not create a
negative effect on nurse performance.
K-ortalamalar Kümeleme Analizi İle Belediyelerin Çevre Hizmetlerinin Değerlendirilmesi
Authors: KILIÇ Günay , BUDAK İbrahim , ORGAN Arzu
Published: April 2020

Halkın yerel ihtiyaçlarını karşılamak üzere kurulan, kuruluş esasları kanunla belirlenen yerel yönetim türle-rinden biri de belediyelerdir. Belediyelerin amacı, beledi-ye sorumluluk ve görevleri kapsamındaki hizmetlerini belediye nüfusunun tamamına ulaştırmaktır. Belediyele-rin birçok görev ve sorumluluğu bulunmakla birlikte bu çalışmada, Türkiye’deki 81 il belediyesi, çevre hizmetleri açısından değerlendirilmiştir. Bu çalışmada, Türkiye İstatistik Kurumu (TÜİK) tarafından 2001-2016 yılları arasında yayımlanan belediye hizmetleri ile ilgili istatis-tikler kullanılmıştır. Bu çerçevede, altı adet kriter ele alınmıştır. Kriterlerin ağırlıklarını belirlemek için Çok Kriterli Karar Verme Yöntemlerinden AHP kullanılmıştır. Belirlenen ağırlıklar, ilgili yılların değerleri ile çarpılarak ağırlıklandırılmış bir değer elde edilmiştir. İlgili yılın ağırlıklandırılmış değeri, tek boyutlu kümeleme analizi ile kümelendirilmiştir. İllerin yıllar bazında belediye performanslarının değişimi analiz edilmiştir.
Etkileşimci Liderlik Yaklaşımının Hemşirelerin İşten Ayrılma Niyetlerine Etkisi: Bursa İlinde Özel Hastanelerde Bir Alan Araştırması
Authors: CIRANOĞLU Mehmet
Published: April 2020

Bu
çalışmada, özel hastanelerde, ilk kademe sağlık yöneticilerinin sergiledikleri
etkileşimci liderlik davranışlarının, kendilerine bağlı çalışan hemşirelerin
işten ayrılma niyetlerini ne yönde ve ne kadar etkilediğinin ölçülmesi
amaçlanmıştır. Bununla birlikte, hemşirelerin işten ayrılma niyetlerinin
birtakım demografik faktörlere göre ne şekilde farklılık gösterdiği de ayrıca T
testi ve ANOVA testleri kullanılarak test edilmiştir. Toplanan veriler (N=241)  Yapısal Eşitlik Modeli kullanılarak değerlendirilmiştir.
Araştırma kapsamında ortaya konan hipotez; 
yöneticilerin sergiledikleri etkileşimci liderlik tarzının, hemşirelerin
işten ayrılma niyetlerini negatif yönde etkilediğidir. Araştırma sonucunda
hemşirelerin işten ayrılma niyetlerinin hem meslekteki hem de çalıştıkları
kurumdaki kıdemlerine göre anlamlı farklılıklar gösterdiği tespit edilmiştir.
Ayrıca yapısal modelin test edilmesi sonucunda; modelin araştırma için uygun
olduğu ve elde edilen p ve t değerlerine göre de hipotezin desteklendiği
görülmüştür.
Bilim Sanat Merkezi Yöneticilerinin Bağlamsal Performansının Sosyal Ağ Analizi Yaklaşımı ile Değerlendirilmesi
Authors: EREN Zeynep
Published: April 2020

Bu araştırmada Bilim Sanat Merkezleri’nin (BİLSEM) üst yöneticilerinin bağlamsal performansı, profesyonel destek ağı örüntüleri aracılığıyla açığa çıkarılarak analiz edilmiştir. Nitel ve sosyal ağ analizi yöntemlerinin birlikte kullanıldığı karma araştırma yöntemi ile yürütülen araştırmaya Türkiye genelindeki çeşitli il ve bölgelerde görevli 30 BİLSEM üst düzey yöneticisi destek vermiştir. Araştırmanın verileri 2018 yılında, yarı-yapılandırılmış görüşme formu ile çevrimiçi olarak toplanmıştır. Araştırmada yöneticilerin birbirlerinin işlerini kolaylaştırma ve kendilerini geliştirmek için hangi diğer meslektaşlarından hangi konularda destek aldıkları ve profesyonel destek ilişkilerinin geliştirilmesine yönelik önerileri sorulmuş ve profesyonel destek ağı örüntüleri ortaya çıkarılarak sosyal ağ analizine özgü olarak geliştirilen UCINET 6.0 yazılımı ile analiz edilmiştir. Araştırmanın bulgularına göre, yöneticilerden 30 katılımcının profesyonel destek ağı örüntüsü 68 aktörden ve 113 bağlantıdan oluşmuştur. Farklı coğrafi bölgelerde ve birbirinden uzak olmalarına rağmen aralarında profesyonel destek ilişkisi oluştuğu, eğitim değişkenine göre kıdem değişkeninin katılımcılar için profesyonel destek alma açısından daha değerli bulunduğu, üst yöneticilerin maksimum gerçekleştirilecek bağlantının %25’ini gerçekleştirdiği bulunmuştur.
Factors Affecting the Financial Leverage of Service Firms in Turkey: An Empirical Investigation
Authors: BİLEN Abdulkadir , KALASH İsmail
Published: April 2020

This research investigates the factors affecting the financial leverage of 52 service firms listed on Istanbul Stock Exchange during the period from 2008 to 2017. Using Ordinary Least Squares (OLS) regressions, our results indicated that, as assumed by the pecking order model, leverage increases with investment opportunities and decreases with profitability, liquidity and tangibility. Furthermore, we find that larger firms tend to have high leverage. However, contradicting the trade-off model, non-debt tax shields are positively and significantly related to leverage.
Nitrik asit ile modifiye edilmiş biyokütle temelli aktif karbonun süperkapasitör performansının incelenmesi
Authors: GÜRTEN İNAL İffet İşıl , GÖKÇE Yavuz , YAĞMUR Emine , AKTAŞ Zeki
Published: April 2020

Bu çalışmada çay fabrikası atığından H3PO4
aktivasyonu ile aktif karbon üretilmiş, üretilen örneklere farklı derişimlerde
(v/v, % 3,33, % 10, % 20 ve % 40) HNO3 kullanılarak asidik yüzey
modifikasyonu işlemi uygulanmıştır. Örneklerin süperkapasitör elektrot
malzemesi olarak kullanılabilirliği, sulu asidik elektrolit (1 M H2SO4)
ortamında test edilmiştir. İşlem görmemiş ve modifiye aktif karbon örneklerinin
yüzey karakterizayonu çeşitli kimyasal ve fiziksel yöntemlerle
gerçekleştirilmiş, yüzey oksijenli grupların tipi ve miktarının elektrokimyasal
performans üzerine etkisi araştırılmıştır. Sonuç olarak, modifikasyonda kullanılan
asit derişiminin aktif karbonun yüzey alanı ve gözenekliliğini önemli oranda
etkilediği belirlenmiştir. Asit derişimi % 3,33’ün üzerine çıktığında yüzey
alanında büyük düşüş gözlenmiştir. Asit derişiminin artmasıyla yüzeydeki
oksijenli grupların derişiminde artış gözlenirken, fonksiyonel grup tipi
farklılık göstermektedir. % 3,33 HNO3 ile modifiye edilen örnekten
hazırlanan elektrot, işlem görmemiş aktif karbondan hazırlanan elektrota göre
daha iyi performans sergilemiş, asit derişimi arttıkça elektrot performansında
elektrot iç direncindeki artışa bağlı olarak önemli ölçüde düşüş gözlenmiştir.
Hazırlık maliyetli stoğa-üretim sistemlerinin kontrolü
Authors: ÖZKAN Sinem , Bulut Önder
Published: April 2020

Bu çalışma, paralel ve özdeş üretim
hatları, çeşitli müşteri sınıfları, üretim başlatma, elde stok tutma ve kayıp
satış maliyetlerinin mevcut olduğu Markov yapılı stoğa-üretim sistemleri için
üretim-envanter ortak kontrolünü ele almaktadır. Üretimin tamamlanması veya
müşteri talebi gelmesi olaylarında verilmesi gereken kararlar: i. Yeni kaç tane üretim hattının aktive
edileceği ii. Gelen talebin
karşılanıp karşılanmayacağıdır. Bazı sistem durumlarında düşük önceliğe sahip
sınıfların taleplerinin reddedilmesi ve eldeki stoğun daha öncelikli/değerli
sınıfların gelecek talepleri için saklanması daha ekonomiktir. Bu çalışma,
sabit üretim maliyetleri, birden fazla üretim hattı ve çeşitli müşteri
sınıflarının aynı anda çalışılması ile stoğa-üretim sistemlerinin kontrol
teknik yazınına katkıda bulunmaktadır. 
İncelenen sistemin dinamik programlama formülasyonu geliştirilmiş ve
değer yineleme algoritması kullanılarak eniyi üretim ve stok tayınlama politikalarının
yapısı karakterize edilmiştir. Eniyi politikaların yapısının karmaşık ve
dinamik olması nedeniyle, uygulanması kolay ve iyi performans gösteren
alternatif politikalar da sunulmuştur.
Regression Analysis of Masked Competing Risks Data under Cumulative Incidence Function Framework
Authors: Yousif Yosra , Elfaki Faiz Ahmed Mohamed , Hrairi Meftah
Published: April 2020

In the studies that involve competing risks, somehow, masking issues might arise. That is, the cause of failure for some subjects is only known as a subset of possible causes. In this study, a Bayesian analysis is developed to assess the effect of risks factor on the Cumulative Incidence Function (CIF) by adopting the proportional subdistribution hazard model. Simulation is conducted to evaluate the performance of the proposed model and it shows that the model is feasible for the possible applications.
Optic Nerve Atrophy in Heroin Intoxication
Authors: Ioyleva E. E. , Zinov’eva A. V.
Published: April 2020

Drug dependence is one of important social problems in modern society. It became more actual because of the high morbidity in young working-age patients. The central nervous system is the main target for psychoactive substances. Long-term drug intoxication results in functional and structural brain alterations, it leads to cognitive impairment and disturbances of higher mental functions rendering patients’ disadapted in their work and daily life activities. Eye disorders due to drug abuse are multifaceted and can vary from conjunctival damage to severe endogenous endophthalmitis. Opioid dependence can result not only from intentional self-administration of narcotic drugs, but also from long-term prescribed use of these medicinal products owing to their potent analgesic effect exhibited in somatically ill patients with severe chronic pain. Opioid derivatives act as partial or full agonists of three types of opioid receptors (δ, κ, and µ) extensively expressed by the neurons of the central and, to a lesser extent, peripheral nervous system. The most dangerous complication of intoxication with this group narcotic drugs is opioid induced-respiratory depression resulting in hypoxaemia and hypercapnia. The paper presents a case report of bilateral optic nerve atrophy that developed in a young female patient after a long period of intravenous heroin use. There are practically no reports of optic nerve damage due to heroin intoxication in the current literature. Possible optic nerve atrophy mechanisms under discussion include generalized hypoxia developing against a background of chronic heroin intoxication and direct toxicity of admixtures used to dilute home-made narcotic drugs. In view of the growing use of these substances, physicians have to consider their effects in the differential diagnosis in patients with atypical eye disorders.
Posterior Capsulorhexis for Draining Berger Space
Authors: Shilovskih O. V. , Ulyanov A. N. , Rebrikov I. S.
Published: April 2020

Lens material can be detected behind posterior capsule in case of infusion misdirection syndrome development during phacoemulsification. This condition is associated with Wieger ligament damage. There is no accepted management options for this issue. Authors offer original technique of small diameter (2–3 mm) posterior capsulorhexis performed before IOL implantation for evacuation of infusion fluidics and lens material from Berger space. Safety of new technique was evaluated by OCT images analyzing central foveal thickness in 1 day, 3 weeks and 6 weeks after cataract surgery. There were 3 patients groups: I — uneventful phacoemulsification (10 eyes) (control group); II — phacoemulsification with development of infusion misdirection syndrome and lens material behind posterior capsule without performing posterior capsulorhexis (10 eyes); III — phacoemulsification with development of infusion misdirection syndrome performing posterior capsulorhexis for draining Berger space. There was no significant difference in central foveal thickness between patients groups. There was trend of central foveal thickness increase in 3 weeks after surgery in all groups. Central foveal thickness returns to initial values in 6 weeks after surgery in all patients groups. There was no cases of cystoid macular edema in study. In conclusion, small diameter posterior capsulorhexis technique is useful in clinical practice for evacuation of infusion fluidics and lens material from Berger space before IOL implantation.
Mathematical Modeling of Eyeball Vitreous Cavity and Software Based Thereon for Automatic Calculation of Individual Doses of Antibiotics for Intravitreal Injection in Treating Bacterial Endophthalmitis
Authors: Kazaykin V. N. , Ponomarev V. O. , Ponomarev O. P. , Dudorov A. G. , Israfilov K. T.
Published: April 2020

Purpose: Mathematical modeling of the eyeball vitreous cavity and analysis of the vitreous cavity volume vs. eyeball length correlation dependence; software for automatic calculation of individual doses of antibiotics for intravitreal injection in treating bacterial endophthalmitis.

Materials and methods: The study included three sequential stages: 1st stage — mathematical modeling of the vitreous cavity of human eye based on data of 77 phakic eyes, by the least square method. The data were obtained by Tomey UD-8000 ultrasonography (Japan) and VuMax Sonomed ultrasound biomicroscopy (USA). 2nd stage — study of the vitreous cavity residual volume, free from silicon oil, by measuring a volume of vitreous body substitute injected to 64 pseudophakic patients who underwent a vitrectomy on account of detached retina. 3d stage — development of a computer program based on the data of the vitreous cavity volume vs. eyeball length dependence, vitreous cavity residual volume, and anterior chamber volume, and description of an algorithm for diluting antibiotics for intravitreal injection, based on a required concentration.

Results. Vitreous cavity of eyeball was approximated by ellipsoid. Statistical analysis has shown a linear dependence of eyeball length vs. vitreous cavity volume; vitreous cavity calculation accuracy does not depend on the cavity size, and a relative error of volume calculations that were performed from the resulting data of a single determination of the cavity surface point coordinates, with a probability of 0.866, does not exceed 1 %. Average residual volume of the vitreous cavity subjected to silicon oil tamponade was 332.36 ± 0.02 mm3, and average anterior chamber volume, 246.36 ± 0.06 mm3. The resulting data were exported to the computer program kernel.

Conclusion. The developed original mathematical model of the eyeball made it possible to calculate a vitreous cavity volume vs. eyeball length dependence and whereby to plot calibration nomograms that allow individual doses of antibiotics for intravitreal injection to be precisely calculated, thus providing a desired concentration thereof to suppress bacterial microflora and preventing toxic effect on retinae.