bluuebunny/crossref_metadata_2025 huggingface dataset:
ICT-mediated education in youth and adult literacy programmes in the Dominican Republic: an approach to the state of the art
Authors: Sena Rivas Wiselis Rosanna , Herrero Gutiérrez Francisco Javier , Casillas Martín Sonia
Published: December 2018

ABSTRACT:This research focuses on the relation between Education and ICT/Internet in the Dominican Republic. Specifically, we focus on the context of basic literacy education in young people and adults, the overall aim being to learn the extent to which ICT are used in adult education in that country. To this end, we administered a questionnaire to a sample of teachers to learn what digital resources they have access to, how they are used, and a diagnosis of self-perceived digital competences. The main results point to an ever-increasing number of resources for use in the classroom, although there is still room for improvement. Moreover, the implantation of the Internet as a basic tool for strengthening the educational system is progressing but is not yet complete. We conclude that the lack of resources may be partially contributing to this shortfall in immersion in the new technologies, but that it is necessary to continue to implement programs to reinforce the digital competences of teachers, even at a basic level and taking particular account of older teachers. This would certainly improve the teaching-learning process, especially if we consider that the teachers themselves consider ICT as a key factor in the educational process.KEYWORDS: ICT; education; Dominican Republic; youth and adult literacy programmes; basic digital resources. RESUMO: Esta pesquisa enfoca a relação entre Educação e TIC/Internet na República Dominicana. Especificamente, nos concentramos no contexto da educação básica em alfabetização em jovens e adultos, com o objetivo geral de compreender até que ponto as TIC são usadas na educação de adultos nesse país. Para isso, aplicamos um questionário a uma amostra de professores para saber a que recursos digitais eles têm acesso, como são usados e o diagnóstico de competências digitais percebidas por eles mesmos. Os principais resultados apontam para um número cada vez maior de recursos para uso em sala de aula, embora ainda haja espaço para melhorias. Além disso, a implantação da Internet como ferramenta básica para o fortalecimento do sistema educacional está progredindo, mas ainda não está completa. Concluímos que a falta de recursos pode estar contribuindo parcialmente para essa deficiência na imersão nas novas tecnologias, mas que é necessário continuar a implementar programas para reforçar as competências digitais dos professores, mesmo em um nível básico e tendo particularmente em conta os professores mais velhos. Isso certamente melhoraria o processo de ensino-aprendizagem, especialmente se considerarmos que os próprios professores consideram as TIC como um fator-chave no processo educacional.PALAVRAS-CHAVE: TIC; educação; República Dominicana; programas de alfabetização de jovens e adultos; recursos digitais básicos.
Dispositivos móviles para el aprendizaje: análisis de la investigación doctoral sobre mobile learning en España
Authors: Hinojo Lucena Francisco Javier , Aznar Díaz Inmaculada , Romero Rodríguez José María
Published: December 2018

RESUMEN:Las prestaciones de los dispositivos móviles actuales han hecho posible que su uso ya no se limite únicamente al acto comunicativo. En este trabajo, se analiza la influencia de los dispositivos móviles en el aprendizaje a partir del análisis de las tesis doctorales defendidas en España sobre mobile learning. Se ha seguido una estrategia metodológica de revisión sistemática con meta-análisis para conocer el impacto real de los dispositivos móviles en el aprendizaje de los estudiantes de diferentes niveles educativos. Entre los resultados, resalta la variedad de ámbitos de enseñanza que son objeto de interés de la investigación doctoral en España, la diversidad de objetivos en la investigación sobre aprendizaje móvil y los métodos utilizados para obtener la información. Por otro lado, el meta-análisis muestra el efecto estadísticamente significativo a favor del grupo experimental de las distintas tesis doctorales en su conjunto. Finalmente, es relevante conocer y tener ejemplos concretos sobre mobile learning, dado que los resultados del meta-análisis muestran que la implementación de los dispositivos móviles en la educación produce mejoras en el aprendizaje de los estudiantes.

PALABRASCLAVE: dispositivos móviles; mobile learning; tesis doctorales; comunicación.

 

ABSTRACT:The benefits of current mobile devices have made it possible for their use to no longer be limited to the communicative act. In this paper, the influence of mobile devices on learning is analyzed from the studies of a doctoral thesis defended in Spain on mobile learning. Thus, a methodological strategy of systematic review with meta-analysis has been followed to know the real impact of mobile devices in the learning of students of different educational levels. Among the results, the variety of teaching fields that are the subject of doctoral research in Spain, the diversity of objectives in mobile learning research and the methods used to obtain the information stand out. On the other hand, the meta-analysis shows the statistically significant effect in favor of the experimental group of the different doctoral thesis in general. Finally, it is important to know and have concrete examples about mobile learning, once the results of the meta-analysis show that the implementation of mobile devices in education produces improvements in student learning.

KEYWORDS: mobile devices; mobile learning; doctoral thesis; communication.
A leitura do mundo através da tecnologia educacional: a adoção da Robótica Pedagógica nas práticas de democratização do conhecimento científico
Authors: Silva Heitor Felipe da , Carvalho Ana Beatriz Gomes Pimenta de
Published: December 2018

RESUMO:Este artigo apresenta um Mapeamento Sistemático da Literatura (MSL) acerca da democratização do conhecimento científico e das práticas de alfabetização e letramento científico com adoção da robótica pedagógica em tais práticas, a fim de consolidar resultados publicados em veículos dedicados à divulgação do conhecimento científico. O mapeamento sistemático da literatura foi realizado em 2018, considerando trabalhos entre os anos de 2010 a 2017. Como base de dados, inicialmente foram escolhidos o Catálogo de Teses e Dissertações da CAPES e a Biblioteca Digital Brasileira de Teses e Dissertações, e posteriormente o Google Scholar. A partir da combinação de buscas foram recuperados quatro artigos, dos quais três foram considerados relevantes para extração e análise de dados via software EndNote. O mapeamento pode mostrar o quão pouco são realizados trabalhos voltados ao uso da robótica pedagógica como ferramenta de auxílio às práticas de democratização do conhecimento científico.

PALAVRAS-CHAVE: robótica pedagógica; letramento científico; democratização; conhecimento; ciência e tecnologia.

 

ABSTRACT:This article presents a Systematic Literature Mapping (MSL, in Portuguese) about the democratization of scientific knowledge and the practices of literacy and scientific literacy with the adoption of pedagogical robotics in such practices, in order to consolidate results published in vehicles dedicated to the dissemination of scientific knowledge. The systematic mapping of the literature was carried out in 2018, considering works between the years 2010 to 2017. As a database, the Catalog of Theses and Dissertations of CAPES and the Brazilian Digital Library of Theses and Dissertations were initially chosen, and later Google Scholar. From the combination of searches, four articles were retrieved, of which three were considered relevant for extraction and data analysis through EndNote software. The mapping can show how little work is done on the use of pedagogical robotics as a tool to help the practices of democratization of scientific knowledge.

KEYWORDS: pedagogical robotics; scientific literacy; democratization; knowledge; science and technology.
Implicações docentes e discentes na utilização das novas TIC no processo de ensino-aprendizagem de língua inglesa
Authors: Brandão Luiz Henrique Mendes , Silva Jesiel Soares
Published: December 2018

RESUMO: Neste trabalho, objetivamos analisar as implicações docentes e discentes no processo de ensino-aprendizagem de língua inglesa. Para tal, avaliamos a utilização, por parte dos professores dessa língua, de materiais em vídeo, músicas, entre outras mídias advindas dessas novas TIC, tanto em escolas públicas quanto particulares, considerando a percepção dos professores e alunos. Como procedimento de investigação, aplicamos um questionário a professores e alunos de seis escolas da região do Barreiro, em Belo Horizonte – MG (Brasil). Com base nas respostas obtidas, verificamos um baixo índice de aproveitamento das potencialidades das novas TIC, em especial nas escolas públicas, mas também nas escolas particulares.

PALAVRAS-CHAVE: novas TIC; ensino-aprendizagem de língua inglesa; materiais autênticos.

 

ABSTRACT:In this paper we aimed at analyzing the implications concerning teachers and students in the English teaching-learning process. To do so, we assessed the English teachers’ use of video materials, music, among other media provided by the new ICT, both in public and private schools, relying on teachers’ and students’ perceptions. As investigation procedure, we applied a multiple-item questionnaire to teachers and students from six schools in the neighborhood of Barreiro, in Belo Horizonte – Minas Gerais (Brazil). Through the answers, we verified a low rate of exploration of the potentialities provided by the new ICT, especially in public schools, but also in the private ones.

KEYWORDS: new ICT; English language teaching-learning; authentic materials.
Türkiye’de İllerin Gelişmişlik Düzeyi Dikkate Alınarak Sağlık Hizmetlerinin Kümeleme Analizi Aracılığıyla Değerlendirilmesi
Authors: Gençoğlu Pelin
Published: December 2018

Health is defined as a state of complete well-being and health services are such a kind of services which help to protect and sustain the health situation. There are several factors which affect health services and the level of services individuals utilized. One of the factors is that social and economic development level where individuals live. Turkey is one of the developing countries and despite this there are huge development differences among the cities. Differences could be seen in health services at the city level. Because of this reason, this study investigates the differences among the cities on the consideration of development and health service level. Ward clustering method is chosen for the analysis. The analysis consists of 81 cities and uses 31 health variables. Health variables are taken from “Health Statistics Annual” prepared by The Ministry of Health. Results reveal that there is a positive correlation between social-economic development and health service level for cities.
İnternet Bankacılığında Hedonik Motivasyon Unsurları, E-tatmin ve E-bağlılık Etkileşimi: Nevşehir İli Örneği
Authors: Çoban Suzan , KESKİN Serhan
Published: December 2018

The aim of this research is to determine the effect of hedonic motivational factors on internet banking on e-satisfaction and e-loyalty. It is also aimed to determine the effect of e-satisfaction on e-loyalty in the study. The questionnaires developed for these purposes were applied to 324 people in Nevşehir using internet banking. Data were analyzed using factor analysis and regression analysis. The main findings are: Hedonic motivation factors; adventure, material value, help for others, innovation and socialization. Hedonic motivation factors have an influence on e-satisfaction and e-loyalty. In particular, there is a significant impact of researching material value and socialization. E-satisfaction affects e-loyalty.
Örgütsel Davranışta Yeni Ufuklar: Yüksek Lisans Öğrencileri Bağlamında Bir Çalışma
Authors: Tunç Tülin
Published: December 2018

20. yüzyılın başlarından itibaren iş örgütlerinde çalışan iş görenlerin davranışlarını ve bunların sonuçlarını odağa alan çalışmalar, içinde bulunulan bağlamın etkileriyle zaman içinde evrilmiştir. Örgütsel davranış disiplininin gelecekte odaklanacağı konuların neler olabileceğine yönelik bir öngörü kazanmak için, ilişkili konuları ele alarak gidişatlarını değerlendirmenin, geleceğe yönelik tahminlerde bulunmada faydalı olacağı düşünülmektedir.Bir üniversitenin sosyal bilimler enstitüsünde eğitim gören ve örgütsel davranış dersi almış yüksek lisans öğrencileri (n=91) üzerinde yürütülen bu çalışmanın amacı, örgütsel davranış disiplininin gelecekte hangi konulara odaklanacağını ortaya koymaktır. Elde edilen sonuçlar, öğrencilerin örgütsel davranış disiplininin gelecekte en çok ‘sanal örgüt’ (n=68) temasına odaklanacağını düşündüklerini ortaya koymuştur.
Küresel Rekabetin Karşılaştırmalı Bir Analizi: Kuzey Atlantik Antlaşması Örgütü (NATO) ve Şangay İşbirliği Örgütü (ŞİÖ)
Authors: EMİNOĞLU Ayça , DEMİR Sertif
Published: December 2018

Bu makalenin amacı, Türkiye’de gündemde olan Avrasyacılık tartışmaları bağlamında iki örgütün karşılaştırmalı analizini yapmak ve böylece NATO ve ŞİÖ’nün benzerliklerini ve farklılıklarını ortaya koymaktır. Bu amaçla örgütlerin, kuruluş amaçları ve sınıflandırılmaları, kuruluş süreçleri, ittifak yükümlükleri, tehdit algılamaları, üyelerin nitelikleri, karar alma sistemleri, sorumluluk sahaları ve etkinlikleri karşılaştırma yöntemi ile analiz edilmiştir. Yapılan analiz sonucunda, bazı benzerliklere rağmen, NATO ile ŞİÖ arasında nitelik, nitelik, amaç ve kapsam açısından önemli farklar olduğu tespit edilmiştir. Türkiye NATO yükümlülüklerine zarar vermeden ŞİÖ ile yakın işbirliği yapması olası görünmektedir.
Anonim Şirket Genel Kurul Toplantılarında Pay Sahibinin Temsilinde Güncel Gelişmeler
Authors: TEKTEN Emel
Published: December 2018

10.03.2018 tarihinde, 30356 sayılı Resmi Gazete’de yayımlanan 7099 sayılı Kanun’la TTK’da yapılan değişikliklerden biri de; m. 23 ile toplu temsille ilgili TTK m. 428, “bildirge” kenar başlıklı TTK m. 430 ve “bildirim” kenar başlıklı TTK m. 431 hükümleri yürürlükten kaldırılmıştır. Bu makalede söz konusu değişiklik sonrası anonim şirket genel kurulunda pay sahibinin temsiline etkileri bakımından inceleme yapılmıştır. Çalışmada önce toplu temsilcilerle alakalı TTK m. 428 hükmünün yürürlükten kaldırılması ve buna ilişkin değerlendirmeler, sonrasında “bildirge” kenar başlıklı TTK m. 430 ve “bildirim” kenar başlıklı TTK m. 431 hükümlerinin yürürlükten kaldırılması ve bunların değerlendirilmesi ve son bölümde ise yapılan değişikliklerle birlikte pay sahibinin temsilinin son durumu hakkında değerlendirmeler ve ulaşılan sonuçlar açıklanmıştır.
Hanehalkı Elektrik Talebini Etkileyen Faktörler: Türkiye Üzerine Bir Uygulama
Authors: ÇALMAŞUR Gürkan , İNAN Kadir
Published: December 2018

19. yy’da insanlığın kullanımına sunulan elektrik enerjisi 20. yy’ın başlarında Türkiye’de halkın hizmetine sunulmuştur. Temiz ve kolay bir kullanımının olması, hem fosil hemde yenilenebilir kaynaklardan üretilebilmesi elektrik enerjisini diğer enerji formlarından üstün kılmaktadır. Çalışmada Türkiye için hanehalkı elektrik tüketimini etkileyen faktörlerin neler olduğu ve bu faktörlerin elektrik tüketimini ne yönde etkilediği araştırılmıştır. Çalışmada sıralı logit modelin özel bir türü olan Kısmi Oransal Bahis Modeli (PPOM) kullanılmış ve ayrıca tahmin sonrası marjinal etkiler hesaplanmıştır. Çalışma sonucunda aylık gelir, hanede yaşayan kişi sayısı, konut özellikleri ve hanedeki teknolojik aletlerin elektrik tüketimi üzerinde önemli etkileri olduğu tespit edilmiştir.
Vergi Uyuşmazlıklarında Yargısal Çözüm Yollarının Çeşitli Göstergeler ile Analizi: İstanbul Vergi Mahkemeleri Örneği
Authors: İRTEŞ GÜLŞEN Meltem
Published: December 2018

Verginin tarafları olan vergi yönetiminin ve mükelleflerin farklı düşünce ve davranış yapısı içerisinde olmaları, çeşitli uyuşmazlıkların meydana gelmesine neden olmaktadır. Vergi yönetiminin vergiyi en kısa sürede tahsil etme arzusu ile mükellefin kanunlardaki boşluklardan yararlanarak ödeyeceği vergi borcunu en aza indirme veya hiç ödememe arzusu, uyuşmazlıkların ana nedenidir. Çalışmamızda idari çözüm yollarından kısaca bahsedildikten sonra yargısal çözüm yolları sayısal verilerle incelenmiştir. Ülke geneli ve İstanbul ilindeki mükellef sayıları ile vergi dava dosyalarının sayısı ve bu davaların tamamlanma süreleri karşılaştırılarak yargı üzerindeki iş yükünün fazlalığı tespit edilerek idari çözüm yollarına ağırlık verilmesi ve bu konuda alternatiflere yer verilmesi gerektiği düşünülmektedir.
Teaching Note: Making Sense of Poverty Through the Use of Simulative Learning
Authors: Jackson Cora S. , Savage Angela , Gaddis Angela , Donahoe Jana
Published: December 2018

Undergraduate social work students are often challenged by their inability to integrate the implicit and explicit course content in the matriculation of their studies. As educational mandates push for greater integration of skills and knowledge, some BSW programs are turning to the use of simulations to supplement classroom experiences and enhance competency-based training. This teaching note explores the authors' use of the Poverty Simulation, copyrighted by the Missouri Community Action Network, as a type of experiential learning in BSW education. Simulative learning is then linked to the Council on Social Work Education (CSWE) 2015 Educational Policy and Accreditation Standards (EPAS) Competencies to explore its usefulness in undergirding implicit course content.
Determination of Mass Attenuation Coefficients of High Strength Lightweight Concrete Which Producing Using Raw Perlite Aggregate
Authors: ULUSU İsmet , YILMAZ Demet , UZUNOĞLU Zeynep , AKALTUN Yunus
Published: December 2018

The development of technology increases the
environmental pollution and radiological effects. In the present work, the radiation
effects were determined experimentally, in the high strength lightweight
concrete according to  water /cement ratio . Also, the mass attenuation coefficients of the high strength lightweight concrete samples which producing with perlite aggregate were determined. The measurements were performed using a high-purity germanium detector. Ten different gamma rays energies were used. It is observed that the mass attenuation coefficients of the concrete samples are decreasing with the increasing photon energies. The concrete obtained with perlite aggregate can be used for protect from the radiation.water /cement ratio . Also, the mass attenuation coefficients of the high strength lightweight concrete samples which producing with perlite aggregate were determined. The measurements were performed using a high-purity germanium detector. Ten different gamma rays energies were used. It is observed that the mass attenuation coefficients of the concrete samples are decreasing with the increasing photon energies. The concrete obtained with perlite aggregate can be used for protect from the radiation.
Correlation of HER2/neu receptors and other prognostic factors in breast carcinoma
Authors: S. Srihari , A. John Amalan , D. Sivakumar , M. Gobinath
Published: December 2018

Background: Breast cancer is the most common malignancy and the leading cause of cancer related death among women all around the world. Evaluation of prognostic factors including biomarkers is highly recommended for the best management and therapeutic decision of breast cancer patients. Aim was to study the correlation of HER2/Neu receptors and other prognostic factors in breast carcinoma.Methods: Patients who are clinically diagnosed as carcinoma breast a detailed history will be taken. Patients were assigned TNM staging according to AJCC classification and posted for surgery than to find out the receptor status from that specimen.Results: In 60 cases, there is no significant correlation and association between the prognostic factors (age, menstrual status, tumour size, side of disease, nodal positivity, pathological subtypes, histological grading except ER receptor positivity PR receptor positivity) and HER2neu receptor positivity. Significant association noted between the HER2NEU receptor positivity and ER, PR receptor negativity. ER AND PR receptor status it shows that a significant proportion of PR receptor activation is independent on ER receptor activation. And also this independent PR receptor positive status give false positive results depends upon staining pattern ,transport method of tissue specimen.Conclusions: Our study results indicate the importance of ER, PR and HER-2/neu expression as prognostic factors for therapeutic decision.
A predictive factor for axillary lymph node metastasis in invasive ductal breast cancer: the value of tumor and breast volume ratio
Authors: Kubat Mehmet , Dinç Soykan
Published: December 2018

Background: The objective of this study was to witness the effect of tumor volume/breast volume ratio on the presence of axillary lymph node metastasis and to examine the strategy in surgical treatment approach for patients.Methods: This study was carried out prospectively by examining the patients undergoing modified radical mastectomy surgery due to breast cancer (n=99).  Breast volumes were measured through liquid overflow method in graduated bowl tumor volume was measured according to ellipsoid volume formula with diameters determined by pathological specimen, ultrasonography or MRI.Results: Axillary lymph node metastasis (ALNM) was positive in 64.6% of them (n=64). Average breast volume was found to be 693.89cm³ in the measurement of mastectomy materials. Average tumor volume was found to be 9.58cm³. In line with these results, average tumor volume/breast volume (vTm/vMm) ratio was: 0.0176. Author found axillary lymph node metastasis possibility significantly higher in patients with vTm/vMm ratio>0.016 (Odds ratio 9.437, p-value 0.007).Conclusions: The presence of ALNM is the most important factor in indicating the prognosis of patients with invasive breast cancer and planning the treatment. Thus, knowing whether there exists an ALNM or not during preoperative period draws the attention of both the doctors performing treatment and patients. In this study efficiencies of largest tumor diameter, tumor volume and tumor volume (vTm)/Breast volume (vMm) ratio in indicating ALNM presence in cases with T2 invasive ductal breast cancer were evaluated. It was found that vTm/vMm ratio was a recent and effective prognostic criterion in determining ALNM.
A study on comparison of conventional suturing and tissue adhesive (2-octyl cyanoacrylate) for skin closure in inguinal hernia surgeries
Authors: Swaminathan Shanthi Ponnandai , Jebasingh Arun Victor , Annadurai Anbuselvi , Mannan Mannar
Published: December 2018

Background: Wound closure techniques have evolved from suture material to advanced techniques that include skin staplers, skin glue and adhesive tapes. Based on efficacy of advanced suturing techniques patient may be benefited with better cosmesis, lesser postoperative pain, less wound infection and lesser hospital stay. The aim of the study was to compare the results of adhesive glue with suture material in skin closure in hernia surgeries.Methods: This study involves 100 patients undergoing open inguinal hernia surgery.  In 50 of the patient’s skin closure was done with conventional suturing (3-0 ETHILON) and other 50 patients with tissue glue (2-octyl cyanoacrylate). Observation regarding postoperative pain, skin closure time and scar assessment were made, and their results were compared.Results: The mean time taken for skin closure in adhesive group was 2.72±1.32minutes and that of suture group was 4.88±1.533minutes. This difference was of great significance with p value of <0.001. The visual analogue scale shows mean value of 5.3±0.68 for suture group and for skin group it was 3.68±0.62. This value was of great significance with p value <0.001. Postoperative pain was comparatively less in tissue glue group. Postoperative scar was analysed with Vancouver scar scale at regular intervals. The mean score for suture group was 8.3±0.8 and for skin glue group it was 2.8±0.75. These differences of score was of great significance with p value <0.001.Conclusions: Adhesive glue is superior to conventional suturing in clean elective surgeries. It is a safe and an effective method of skin closure with less postoperative pain and better cosmesis of the scar.
Congenital vaginal obstruction in young girls: need for standard post-operative dilatation protocol
Authors: Okoro Philemon E. , Eli Sukarime S.
Published: December 2018

Background: Congenital vaginal obstruction is a rare disorder in which there is blockage of the vaginal tract during the developmental stage and subsequently leading to accumulation of secretions and or menstrual blood. Surgical relief of obstruction is an effective treatment. Ensuring patency of the tract following surgery in young girls not sexually active can be challenging.Methods: This is a 10-years retrospective analytical study of cases of congenital vaginal obstruction in young girls seen in two centres from February 2007 to January 2017. Data retrieved from the case notes included age at presentation, presenting features, prior intervention, diagnosis, surgery performed, vaginal dilatations, outcome, duration of follow-up. Data was subjected to simple statistical analysis.Results: Eight patients met the inclusion criteria. The age range was 7 to 15years with a median of 12years. The cause of obstruction was transverse vaginal septum in 5 cases, imperforate hymen 2, vaginal hypoplasia 1. Three of the patients had no dilatation post operatively and of these, two came back with recurrent obstruction and hematometra. The third one was a case of imperforate hymen and did not develop stenosis despite not being dilated. There were no mortalities.Conclusions: The occurrence of recurrent obstruction following surgical treatment of congenital vaginal obstruction is high. Post-operative dilatation reduces incidence of recurrence.
Assessment of predictors and prognostic factors for locoregional recurrent breast cancer
Authors: Elfol Hossam A. , Rageh Tarek M. , Hamed Mohammed A.
Published: December 2018

Background: Assessment of predictors and prognostic factors of locoregional recurrent breast cancer will help in management of those patients. The aim of this study was to assess and identify the predictors and prognostic factors for locoregional current breast cancer.Methods: This prospective study will be carried out on 50 female patients with history of breast cancer underwent surgical procedures either modified radical mastectomy (MRM) or conservative breast surgery (CBS) and adjuvant therapy (chemotherapy, radiotherapy, hormonal therapy).Results: Significant relationship between recurrence of breast cancer and Oral contraceptive pills of the studied female patients with history of breast cancer underwent surgery.Conclusions: Number of positive lymph nodes, lympho-vascular invasion, positive safety margin and presence of extensive intra-ductal component all these factors increase risk of recurrent breast cancer.
A clinical study of incidence of malignancy in solitary thyroid nodule in a tertiary care hospital
Authors: V. Palani , S. Reshma
Published: December 2018

Background: Thyroid nodules are common endocrine problem. A discrete swelling in an otherwise impalpable gland is termed as solitary nodule of thyroid. Solitary nodules have a high likelihood of being malignant. They should be characterized properly for optimum management. Aim of the study is to identify the incidence of malignancy in solitary nodule thyroid.Methods: A prospective study had been carried out from January 2018 to October 2018, in the Department of General surgery, ACS Medical College and Hospital, Chennai, India. Fifty patients, who presented with solitary thyroid swelling were examined clinically and confirmed after taking a detailed history and underwent thyroid surgery were included in this study. The histopathological reports were evaluated by standard statistical methods.Results: There were 50 cases of clinically detected solitary thyroid nodule with female preponderance more than males. The mean age of the incidence of solitary thyroid nodule is 35years. The incidence of malignancy in solitary thyroid nodule is 20%.Conclusions: It is concluded from the present study that 20% of solitary thyroid nodules are malignant, with female preponderance and a mean age of solitary thyroid nodule is 35years.
An unusual case of venous varix on forehead
Authors: Bali Sharadendu , Pundeer Sameer , Utaal Maneshwar Singh
Published: December 2018

Vascular anomalies include a wide number of disorders from a simple birthmark to life threatening entities. One such vascular anomaly is venous varix which is a commonly encountered case by a general surgeon although venous varix occurring on the forehead as being reported here is a rarity. Authors present a case of swelling over forehead at orbital verge which becomes prominent on performing valsalva maneuver. Case is of a 10year old girl brought to OPD with complaints of swelling over the left side of forehead since birth which becomes prominent on valsalva maneuver, with no associated complaints of pain or difficulty in eye opening. On examination, there was a 2cm diameter swelling present over the left forehead just above the medial margin of left eyebrow. CECT Brain showed no bony or intra orbital extension. Patient underwent excision of the varix. Postoperatively patient recovered well and discharged with cosmetic satisfaction.
High performance 2D simulations for the problem of optical breakdown
Authors:   Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS), Fadeev D.
Published: December 2018

Methods of numerical simulation of two-dimensional short laser pulse nonlinear dynamics are discussed. In this work parallel processing methods for modern CPU (central processing units) architectures supporting non-uniform memory access are considered. The method of adaptive mesh subdivision is proposed to reduce non-uniform load of each CPU during processing of nonlinearity. The results of the tests performed on the Intel Nehalem based a workstation with eight cores are presented.
Tunable diffraction grating with transparent indium-tin oxide electrodes on a lithium niobate X-cut crystal
Authors:   Image Processing Systems Institute оf RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Paranin V. , Karpeev S. ,   Image Processing Systems Institute оf RAS – Branch of the FSRC “Crystallography and Photonics” RAS,   Samara National Research University, Tukmakov K. ,   Image Processing Systems Institute оf RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Volodkin B. ,   Image Processing Systems Institute оf RAS – Branch of the FSRC “Crystallography and Photonics” RAS
Published: December 2018

A tunable diffraction grating based on an electrooptic X-cut lithium niobate crystal has been manufactured and experimentally analyzed. The period of electrodes is 290 μm, the electrode width is 117.5 μm, and the thickness of an electrode is 150 – 160 nm. The electrodes are made of a transparent conducting indium-tin oxide that serves as an antireflection coating with the aim of increasing the optical transmission. In order to prevent crystal polarization switching and electrical breakdown an optimized electrode topology with end ellipticity 1:1 and increased interelectrode gap is used. The optical diagram of the tunable grating with alternating electrode potentials for various gap voltages is analyzed. The intensity of the zero order of diffraction is shown to decrease by 40 % at a voltage of 800 V. At the same time, the origination of new diffraction orders at angles ± λ / (2d) is noted. The measurement of the forward-bias and reverse-bias regions of the modulation characteristic reveals the absence of hysteresis, which confirms the correctness of the electrode topology design.
Optimal placement of surveillance devices in a three-dimensional environment for blind zone minimization
Authors:   Yu. A. Gagarin Saratov State Technical University, Pechenkin V. , Korolev M. ,   Yu. A. Gagarin Saratov State Technical University
Published: December 2018

This paper discusses the usage of devices of various types and configuration in the developed software for blind zone minimization via optimal placement of the surveillance devices when observing targets in a complex three-dimensional dynamic scene. We describe the architecture of the software complex, the principle of operation of the surveillance devices, and a blind zone detection algorithm. We propose a formalization of the problem, also describing specific tasks of object visibility definition, reduced to solving the optimization problems of different complexity classes based on a special visibility graph.
Some Null Quaternionic Curves in Minkowski spaces
Authors: Kahraman Tanju
Published: December 2018

In
this work, we examine null quaternionic rectifying curves and null quaternionic
similar curves in Minkowski space E1^3. Also, we defined null quaternionic (1,3)-Bertrand partner
curves in E1^4. Thus, we have characterizations between curvatures of these
curves in Minkowski spaces.
An Approach to Estimate Aircraft Fuel Consumption for the Descent Phase
Authors: Şahin Özlem , Ağayeva Çerkez
Published: December 2018

In this study, the static
(based on Base of Aircraft Data) and the dynamic aircraft fuel consumption
models are constructed for the descent phase. Therefore, two flight
trajectories, from Istanbul to Frankfurt (LTBA- EDDF) and from Los Angeles to
New York (KLAX-KJFK), are chosen in order to analyze the appropriate
relationships between the different parameters such as altitude, speed and
time. A medium range aircraft is taken into consideration while developing
linear and quadratic models. For LTBA- EDDF, fuel consumption as 200 kg, 193,89
kg and 193,58 kg are found for BADA, linear and quadratic models, respectively.
It corresponds to about a 3 % difference from BADA. Furthermore, for KLAX-KJFK,
approximately a 5% difference is obtained.
Frequencies of CYP1A2 Single Nucleotide Polymorphism in Indonesian and Its Effect on Blood Pressure
Authors: Sugiono Erizal , Wijaya Andi , Santoso Anwar , Sandra Ferry , Patellongi Ilham Jaya , Yusuf Irawan
Published: December 2018

BACKGROUND:  The association between caffeine with blood pressure (BP) still remains controversial. Caffeine is mainly metabolized by cytochrome-P450 (CYP)1A2 enzyme. Polymorphism of CYP1A2 is known to cause interindividual variation on enzymatic activity, thus affects caffeine metabolism and its effect on cardiovascular (CV) system.METHODS: We conducted a cross-sectional study and recruited 121 Indonesian subjects aged 25-60 years with varying coffee-drinking habits. DNA was extracted from peripheral blood and genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCRRFLP) technique. Blood pressures were measured in the morning prior to the daily activity. Caffeine concentration in blood plasma was measured using high-performance liquid chromatography (HPLC). The differences between variables were analyzed using MannWhitney analysis and the correlations among variables were determined using multivariate logistic regression analysis.RESULTS: This study showed that the frequencies of single nucleotide polymorphisms (SNPs) among Indonesian were 31.8%, 18.2%, 25.2% and 24.8% respectively for CYP1A2*1A, CYP1A2*1B, CYP1A2*1C and CYP1A2*1F alleles. The genotype analysis showed that the subject number of the wild type (*1A/*1A) and the variants were 9.92% and 90.08%. There were no significant differences in term of BP levels among CYP1A2 genotypes and coffee drinking habit groups.CONCLUSIONS: The frequencies of CYP1A2 SNPs in Indonesian are different with frequencies in other populations. Since the association were not statistically significant, CYP1A2 polymorphisms as the predictor of elevated blood pressuare should be investigated further.KEYWORDS: coffee, caffeine, blood pressure, single nucleotide polymorphism, CYP1A2
Screening of Extended-Spectrum β-Lactamases (ESBL)-producing Klebsiella pneumoniae with ChromID ESBL Media
Authors: Noerwidayati Emy , Dahesihdewi Andaru , Sianipar Osman
Published: December 2018

BACKGROUND: Klepsiella pneumoniae, one of clinical isolates, is frequently found causative agent of hospital acquired infection. Currently, K. pneumoniae is found as extended-Spectrum β-lactamases (ESBL) producer, allowing it to become multidrugresistant. A clinical laboratory with limited facility needs a valid, reliable, inexpensive and simple laboratory test to control its infection and antimicrobial-resistancy. The aim of this study is to evaluate the diagnostic performance of a ESBL media to detect ESBL-producing K. pneumoniae.METHODS: An independent and blind comparative study of ChromID ESBL media and Double Disc Synergy Test (DDST) was conducted for detecting the clinical isolate of ESBL-producing K. pneumoniae. Clinical isolates of K. pneumoniae collected from the Clinical Laboratory of Dr. Sardjito Hospital were isolated.RESULTS: There were 103 clinical isolates of K. pneumoniae, which were isolated from urine, pus, blood, stool, cerebrospinal fluid, sputum, drain liquid, nasal sinus liquid, gastric wash, bronchi liquid, injury liquid and nasal swab. The number of true positive, true negative, false positive and false negative results were 74, 18, 9 and 2, respectively. Meanwhile, the sensitivity, specificity, positive predictive value, negative predictive value, likelihood ratio for positive result and likelihood ratio for negative result of the new ESBL media were 97.4%, 66.7%, 89.2%, 90%, 2.9 and 0.03, respectively.CONCLUSION: Since the new ESBL media and DDST results were similar, so the new ESBL media could be used for screening patients with clinical presentation that indicating a high suspicious of ESBL-producing bacteria.KEYWORDS: K. pneumoniae, ChromID ESBL, DDST, ESBL, sensitivity
High Expression of FcγII (CD32) Receptor on Monocytes in Dengue Infected Patients
Authors: Intansari Umi Solekhah , Salim Harina , Sukorini Usi , Arjana Adika Zhulhi , Juffrie Muhammad
Published: December 2018

BACKGROUND: Pathogenesis of severe dengue infection has not been elucidated. Immune complex of pre-existing antibodies and heterotypic dengue virus bind to FcγII (cluster of differentiation (CD32)) receptor (FcγIIR) on monocyte facilitates entry and replication of dengue virus. Aim of this study was to evaluate the expression of FcγIIR on monocytes in patients infected with dengue and in healthy subjects.METHODS: This study used a cross-sectional design that included patients infected with dengue who were hospitalized in Dr. Sardjito General Hospital, Panembahan Senopati Hospital, and Sleman Hospital, who met the inclusion criteria and selected consecutively. Examinations were completed using a lyse, no-wash method of flow cytometry. Computerized statistical analysis was conducted and was considered to be significant if p<0.05.RESULTS: Sixty-five study subjects were divided into healthy subjects (24 subjects) and patients with dengue infection (41 subjects). There were no significant differences in hemoglobin (Hb) and hematocrit (Hct) values between the groups, but differences were found in the number of leukocytes, absolute number of monocytes and platelet count (p<0.001, 0.002 and <0.001, respectively). The mean expression of FcγIIR monocytes in patients with dengue infection (208.77±32.06 median fluorescent intensity (MFI)) and the healthy subjects (124.03±47.76 MFI) with p<0.0001.CONCLUSION: The mean expression of FcγIIR monocytes in patients with dengue infection was higher than in healthy subjects.KEYWORDS: dengue infection, FcγII (CD32) receptor monocyte, flow cytometry
High VEGF Level is Produced by Human Umbilical Cord- Mesenchymal Stem Cells (hUC-MSCs) in Amino Acid-Rich Medium and under Hypoxia Condition
Authors: Sidharta Veronika Maria , Herningtyas Elizabeth Henny , Lagonda Christine Ayu , Fauza Dilafitria , Kusnadi Yuyus , Susilowati Rina , Partadiredja Ginus
Published: December 2018

BACKGROUND: Secretome production by stem cells depends on their culture conditions such as oxygen concentration and the composition of the culture media. In this study, we investigated the secretion of neurotrophic growth factors of human umbilical cord mesenchymal stem cells (hUC-MSCs) in amino acid-rich culture medium and under hypoxic condition.METHODS: hUC-MSCs were cultured in normoxic and various hypoxic (1%, 5%, 10%) conditions in an amino acid-rich culture medium. The end-point parameters (cell proliferation and survival, cell morphology and growth factor secretion) were measured at 3 time-points (48 hours, 72 hours and 96 hours). ELISA-based methods were used for neurotrophic factors detection, including neurotrophic growth factor (NGF), vascular endothelial factor (VEGF), and brain-derived neurotrophic factor (BDNF).RESULTS: NGF secretion was not detectable at any time points both in normoxia and hypoxia. BDNF secretion under normoxia was induced at 48 h time point and reached the highest level at an average of 181.9±13.01 pg/mL at 96 hours, whereas hypoxia exposure to hUC-MSCs only induced the BDNF secretion at low level. VEGF secretion was barely detectable in normoxic condition. However, VEGF secretion reached the highest level at an average of 7707.55±2110.85 pg/mL in 5% hypoxia at 96 hours.CONCLUSION: Combination of amino acid-rich culture medium and hypoxia condition dramatically induced high VEGF secretion by hUC-MSCs, especially at 5% hypoxia, induced mild BDNF secretion and had no effect toward NGF secretion.KEYWORDS: human umbilical cord mesenchymal stem cells, neurotrophic growth factor, amino acid-rich, hypoxia
Aproximación a la investigación psicológica en Internet y redes sociales
Authors: Pérez Vanessa
Published: December 2018

El objetivo de este artículo es presentar un resumen de las principales líneas de investigación psicológica en internet y las redes sociales. Dentro de las áreas de investigación más frecuentes se encuentran la construcción de la identidad online, las relaciones personales en internet, el apoyo social online y el bienestar psicológico. Las personas utilizan las redes sociales como una forma de autopresentación y autopromoción, en la que suelen destacar los rasgos narcisistas al desear ser percibidos de manera positiva por los demás. También, se han convertido en espacios de interrelación en los que se sostienen vínculos de amistad, familiares, de pareja y de relaciones grupales en general. Las investigaciones sostienen que las redes sociales aumentan la percepción de capital y apoyo social y contribuyen de manera positiva al bienestar psicológico. Actualmente, las oportunidades de investigación están en el big data y las aplicaciones informáticas para el análisis y la intervención en psicología.
Classification of Communicative Strategies in the Implementation of Management Decisions
Authors: Shilova Valentina A. , Ugrinovich Daria A.
Published: December 2018

The article systematizes knowledge about communication strategies and ideas about the types and structures of different organizations in which they can be applied to the implementation of management decisions. The notion of a communicative strategy are compared with the notion of a managerial communicative action (MCA) according to J. Habermas. Highlights approaches and grounds for the classification and typology of communication strategies implemented by different authors. Considered: the model of four basic communication strategies of B. van Rouler (informing, agreement, dialogue, persuasion) extended by T. Orlova; classification S. Datsyuk (passive, active, interactive); the typology of O. Issers, focusing on the tactics and strategies of the Russian language; approaches to systematization of E. Surovtseva, who linked communicative and organizational strategies; M. Kravets, generalizing works that related to strategic planning; T. Adamyants, who singled out four normative communication fields on the basis of the communicator’s relationship to respondents and competitors; N. Kirillova, focusing on moral categories, as well as the classification of innovative communications M. Hulsman and N. Pfefferman, who identified three main communicative strategies (knowledge, positioning and management). As a result, the authors form a general universal list of classification grounds, for which you can systematize communicative strategies.
Risky Sexual Behavior of Modern Teenagers in Russia. Part I
Authors: Bruno Victoria V.
Published: December 2018

The article is devoted to the consideration of risky sexual behavior of adolescents and young people. The first part of the article presents an overview of statistical data from Rosstat and the Ministry of Health on the problem of the incidence of adolescents with sexually transmitted infections and HIV. It has been shown that despite a noticeable decrease in the incidence of sexually transmitted infections among children and adolescents in recent years, this age population is a vulnerable risk group. The main trend – against the general decrease in the incidence of sexually transmitted infections, an increase in the incidence of viral sexual infections and their hidden forms is observed. It has been revealed that the age structure among newly diagnosed HIV patients has changed: over the past two decades, there has been a decrease in the incidence of HIV infection among adolescents, and the epidemic is migrating to older age groups. Based on a review of various studies, as well as the results of our own surveys of high school students and college students, the peculiarities of adolescent sexual activity were considered: the prevalence of early sexual intercourse, the use of contraception, awareness of sexual hygiene and sexually transmitted infections. It was revealed that the rate of decline in the average age of sexual debut that has lasted over the last decades has slowed down, but the proportion of sexually active minors is quite large, while many adolescents do not use means of protection, having certain prejudices about their use, and awareness of infections is not satisfactory.
Risky Sexual Behavior Among Alcohol Consumers in the Youth Environment (Sociologic Analysis)
Authors: Kozlova Irina V.
Published: December 2018

The article presents the results of the study “Lifestyle of student youth: behavioral risks”, which was carried out in 2016–2017. The survey was conducted among college and university students aged 17–23 years. The particularities of influence of alcohol on the guideline beliefs of young people about sexuality and in particular on sexual behavior are revealed. Youth consuming alcohol beverages systematically is distinguished by a more liberal attitude towards sex and premarital sexual contacts, as well as broad guideline beliefs about the acceptability of various sexual activities, and a lower sexual culture. The results of a sociological survey indicate a high sexual activity of students. The low level of social culture and education, the immature system of sexual education, a large number of questionable sources of information on this topic are the causes of this problem. The article identifies the negative effects of alcohol consumption before intimacy, as well as the level of knowledge of young people on safe sex issues. An analysis of medical statistics indicates that alcohol and drugs that are consumed even periodically increase the potential risk of HIV infection. The extensive empirical material of the sociology sector of deviant behavior shows the main behavioral risks to the health of the youth: alcohol consumption, risky sexual behavior. Also, the role of prevention of risky sex among the young is indicated, which should be based on timely moral and ethical education. The need was emphasized for prevention of alcohol abuse to the extent of the spiritual and moral education of young people, as well as the propaganda of safe sexual behavior.