bluuebunny/crossref_metadata_2025 huggingface dataset:
Ergen-Ebeveyn Kariyer Uyumu Ölçeği'ni Türkçeye Uyarlama Çalışması
Authors: Bacanlı Feride , Yıldız Akyol Elvan , Kaynak Semih , Özhan Mehmet Buğra
Published: December 2018

Bu
araştırmanın temel amacı Ergen-Ebeveyn Kariyer Uyumu Ölçeği’nin (Sawitri vd.,
2012) geçerlik ve güvenirliğinin Türkiye’deki ergen öğrenciler üzerinde
incelenmesidir. İlk olarak ölçeği oluşturan maddeler Türkçeleştirilmiştir.
Türkçeleştirilen maddeler psikolojik danışma ve rehberlik, ölçme ve
değerlendirme ve Türkçe alanlarından uzmanlar tarafından incelenmiş, alınan
dönütler kapsamında gerekli düzenlemeler yapılmıştır. Ölçeğin Türkçe formu Ankara
il merkezinde üçü lise, üçü ortaokul düzeyinde olmak üzere altı farklı okulda
öğrenim görmekte olan toplam 494 ergen öğrenciye uygulanmıştır. Ölçeğin yapı geçerliliğine
kanıt sağlamak amacıyla doğrulayıcı faktör analizi yapılmıştır. Yapılan birinci
ve ikinci düzey DFA sonuçları birlikte değerlendirildiğinde; ölçeğin orijinal
formunda yer alan iki faktörlü yapısının araştırmanın çalışma grubu olan Türk ergen
öğrencilerde de desteklendiği görülmüştür. Ölçeğin geçerliğine kanıt sağlamak amacıyla
Kariyer Seçiminde Aile Etkisi Ölçeği ile ilişkisi incelenmiştir. Ölçeğin güvenirliği, Cronbach Alpha
katsayısı ile iç tutarlılık,  test-tekrar
test tekniği ile de kararlılık bağlamında incelenmiştir. Yapılan inceleme sonucunda
Cronbach Alpha katsayısı değerleri tamamlayıcı uyum alt boyutu için .77,
benzerlik uyumu alt boyutu için .73, ölçeğin bütünü için ise .82 olarak
bulunmuştur. Test-tekrar test güvenirlikleri ise tamamlayıcı uyum alt boyutu
için .84, benzerlik uyumu alt boyutu için .79, ölçeğin bütünü için ise .89
olarak hesaplanmıştır. Araştırma bulguları bir bütün olarak değerlendirildiğinde
Ergen-Ebeveyn
Kariyer Uyumu Ölçeği’nin ebeveynler ile onların ergen çocuklarının kariyer
beklentileri arasındaki uyumu ölçen, 11 maddeden ve tamamlayıcı uyum ve
benzerlik uyumu olmak üzere iki alt faktörden oluşan, gelecek teorik ve
uygulamalı araştırmalarda kullanılabilecek geçerli ve güvenilir bir ölçme aracı
olduğu söylenebilir.
Turismo y terrorismo. Crisis y medios de comunicación
Authors: Almeida García Fernando , Jiménez Serrano Sandra
Published: December 2018

La actividad turística es muy sensible a cualquier situación que afecte a la seguridad del turista. El terrorismo ha encontrado a través de los atentados en los espacios turísticos un gran eco en los medios de comunicación y una herramienta de presión hacia los gobiernos de los países afectados. Los medios de comunicación juegan un papel fundamental en la trasmisión de los sucesos relacionados con el terrorismo. Esta investigación estudia la afección del terrorismo en el panorama turístico de diversos países y destinos. Se realiza un análisis de la influencia que ejercen los medios de comunicación en la sociedad y los intereses relacionados con la difusión de estas noticias. Esta investigación se realiza mediante un análisis documental de noticias y fuentes estadísticas. Este estudio muestra que los medios de comunicación seleccionan las noticias relacionadas con el terrorismo por afinidad geográfica, cultural y económica, las noticias de los atentados europeos tienden a mostrar el hecho como asunto puntual y bajo control y que la mayor parte de los atentados terroristas se producen fuera del ámbito occidental.
Comportamiento del turismo nacional y crecimiento en España
Authors: Flores Ruiz David , Bago Sotillo Elena , Barroso González María de la O
Published: December 2018

En este artículo se estudia el comportamiento de la demanda turística de los españoles respecto al crecimiento de la economía en los primeros años de este siglo. El estudio se centra exclusivamente en la población residente en España, de forma que se analizan las relaciones de causalidad entre las variaciones del Producto Interior Bruto y las preferencias turísticas de los españoles. En primer lugar, se evalúa esta influencia sobre el flujo turístico de los residentes en España, haciendo una distinción entre el turismo emisor y el turismo interno y, en segundo lugar, las distinciones se realizan sobre el turismo rural y el resto de tipologías alojados en establecimientos hoteleros. Para ello, se utilizan datos de las series temporales trimestrales del producto interior bruto nacional, del número de viajes al extranjero, del número de viajes internos, del total de pernoctaciones en hoteles nacionales y del número de pernoctaciones en alojamientos de turismo rural. Los resultados confirman una causalidad bidireccional entre el turismo nacional y crecimiento económico, detectándose una ruptura estructural en 2008 que no afecta a las relaciones entre las variables y no producen alteraciones en las causalidades.
Marruecos y su nueva política exterior hacia África. Continuidades, discontinuidades y perspectivas
Authors: Camps-Febrer Blanca , Mateos Óscar
Published: December 2018

En los últimos años, Marruecos ha efectuado un notable giro en su agenda exterior hacia África. De la mayor discreción que ha caracterizado la posición del régimen alauí en las últimas tres décadas, el país ha pasado a poner en marcha una serie de decisiones que indican que algo muy de fondo podría estar cambiando en la política internacional marroquí hacia esta región. Sin duda, el retorno a la Unión Africana (UA), en febrero de 2017, o la demanda formal de adhesión a la CEDEAO/ECOWAS (organización que agrupa a los Estados de la región de África Occidental), pocos meses después, son decisiones de un gran alcance, que indican que África podría erigirse en una de las piedras angulares de la nueva diplomacia marroquí. El presente artículo tiene tres objetivos principales. En primer lugar, analizar desde una perspectiva histórica las relaciones del régimen marroquí con el conjunto de países del continente africano, especialmente con la región subsahariana. Segundo, entender las causas de fondo que han motivado esta nueva estrategia diplomática, contextualizando también el conjunto de la agenda internacional del Gobierno de Mohamed VI, e incidiendo de manera especial en las implicaciones que esta estrategia tiene para la cuestión del Sáhara Occidental, o bien en lo que respecta al presente y futuro de la UA. Finalmente, el artículo tratará de abordar algunas de las posibles perspectivas e implicaciones que ello puede tener para los principales retos que afronta la región.
Focus 7 - février 2013
Authors: Hindriks Jean
Published: December 2018

Quel est le mécanisme proposé par le ministre wallon de l'énergie Jean-Marc Nollet ? La gratuité des 500 premiers KWh financée par une hausse du prix du KWh au delà de 500 KWh : celui qui consomme peu d'électricité est donc avantagé par rapport à celui qui en consomme beaucoup. Une mesure que l'on pourrait qualifier de «sociale» si l'on considère que les démunis consomment moins que les nantis. Une mesure que l'on pourrait qualifier d'«écologique» si l'on considère qu'elle va encourager les économies d'énergie.
Focus 8 (nl) - avril 2013
Authors: Cockx Bart , Van der Linden Bruno
Published: December 2018

Het Grondwettelijk Hof stelt in zijn arrest van juli 2011 dat het onderscheid tussen arbeiders en bedienden in de bepaling van opzegtermijnen ongrondwettelijk is en dat men dit onderscheid ten laatste tegen 8 juli 2013 dient op te heffen. De urgentie om een compromis te vinden mag de fundamentele uitdagingen waarvoor we staan niet uit het oog doen verliezen: hoe kunnen we best de behoefte aan meer flexibiliteit voor de werkgevers verzoenen met die aan zekerheid voor werknemers?
Focus 8 (fr) - avril 2013
Authors: Cockx Bart , Van der Linden Bruno
Published: December 2018

La cour constitutionnelle a déclaré que la distinction établie en matière de délais de préavis entre employés et ouvriers est inconstitutionnelle et qu'elle doit disparaître le 8 juillet 2013 au plus tard. La recherche dans l'urgence d'un compromis ne doit pas faire perdre de vue les défis fondamentaux : comment concilier au mieux le besoin de flexibilité accrue pour les entreprises et celui de sécurité pour les travailleurs ?
Focus 9 - mai 2013
Authors: Belleflamme Paul
Published: December 2018

Vous avez certainement déjà entendu parler de "Games of Thrones". C'est la série télé la plus populaire du moment. Ses deux premières saisons ont fait un carton et HBO (chaine américaine à péage, productrice de la série) diffuse pour l'instant la saison 3. Ce sont quelque 4,5 millions d'abonnés qui suivent la série. Mais, au total, l'audience est bien plus large car il convient de compter aussi plusieurs millions (le chiffre exact est difficile à estimer) de téléspectateurs «illégitimes». En effet, le dernier épisode diffusé par HBO le 31 mars a été téléchargé plus d'un million de fois en l'espace de 24 heures.
Focus 11 - juillet 2013
Authors: Dejemeppe Muriel , Van der Linden Bruno
Published: December 2018

Le marché du travail wallon a présenté quelques signes encourageants au cours des années 2000, tant sur le plan de la création d'emplois (souvent soutenus par des aides publiques) que du chômage. La Wallonie connaît néanmoins depuis plus de trois décennies un chômage très élevé, souvent de longue durée, en particulier pour certains groupes (les jeunes peu scolarisés par exemple) et certaines sous-régions. Une telle expérience marque profondément. Des politiques fédérales de soutien financier à l'emploi vont prochainement être transférées à la Région wallonne. Qu'en faire ? Le marché du travail wallon connaît simultanément un problème de rareté d'offres d'emploi (même si cette insuffisance est souvent exagérée1) et des difficultés de rencontres entre offre et demande d'emploi. Confrontés à un manque important d'évaluations rigoureuses des politiques menées, nous préconisons les orientations suivantes en ce qui concerne les politiques d'emploi
Focus 21 - juin 2018
Authors: Gautier Axel
Published: December 2018

Le paysage de l’Internet est en train de se transformer radicalement aux États-Unis. Deux décisions récentes vont modifier en profondeur la manière dont les fournisseurs d’accès à Internet (ci-après FAI, tel que Proximus) et les fournisseurs de contenu (tel que YouTube) interagissent. Le 11 juin, le régulateur américain des télécoms (FCC) a édicté de nouvelles règles concernant la neutralité du net. Alors que l’Open Internet Order de 2015 et abrogé en décembre réaffirmait le principe de neutralité du net et limitait sévèrement les pratiques des FAI, les nouvelles règles parues le 11 juin (ou plutôt l’absence de règles) permettent aux FAI de faire plus ou moins ce qu’ils veulent sous la seule obligation de transparence. La même semaine, la justice américaine validait la fusion entre AT&T (un des plus importants FAI américain) et Time Warner (fournisseur de contenu), alors que continue la bataille entre Disney et le FAI Comcast pour le rachat de la Fox. A travers ces fusions, on assiste à une intégration des FAI et des fournisseurs de contenu. Dans ce focus, je reviens sur les implications de la neutralité du net.*
Perception of Semi-Professionals in using ICT in Manipal Academy of Higher Education Libraries
Authors: Rao Ashish Kumar , Rao Mahabaleshwara , Bhat Shivananda Kukdel
Published: December 2018

Application of Information and Communication Technology (ICT) is one of the best practices observed in libraries as it enables automation and modernisation of library services. Today’s environment is digitally driven and library semi-professionals play an important role in providing up-to-date information to the users using modern technologies. The objective of the present study was to assess the perception of semi-professionals with respect to the use of ICT in Manipal Academy of Higher Education Libraries by them. 58 Library Assistant working in the seven constituent institutional libraries of MAHE at Manipal campus were included in the study and data were collected using questionnaire. The findings of the study revealed that EasyLib, the library automation software, and Electronic Public Access Catalogue (EPAC) had most impact on the role of semi-professionals (84.2 %) in providing ICT enabled services to the users. More than thirty percent (31.5 %) of the semi-professionals were of the opinion that ICT has considerably changed their duties and responsibilities. Semi-professionals are also of the opinion that they are now in a position to provide faster, more accurate and up-to-date information services to the users in their libraries. The findings of the present study support a need to implement the appropriate technologies in the libraries as they support the semi-professionals in their library housekeeping activities as well as in providing effective library services to the users.
Library Drone Delivery Programme: A Study
Authors: Nath Francis
Published: December 2018

There has been a significant paradigm shift in drone applications. Exclusively available only for military missions in the past application of drones has made its way to various platforms and the library is the one such platform that is being examined here. A significant feature of a drone that is its delivery feature can prove immense potential in bringing information to the users in the form of books or other library documents. A study is done on various elements of the drone facility, its payload capacity, the integration of such a facility with the library, the procedure of processing user requests via drone delivery, drone technology and procedure for making delivery, the regulations in India concerning flying of drones and the advantages and limitations of using drone delivery service. It is an emerging technology that has yet to see its full potential in civilian platform. In today’s digital era with diminishing demand for physical books caused by electronic documents, drone delivery can breathe fresh air into the library services by bringing back the popularity of books and making them available to the users in the click of a button.
Relationship between Online Journal Usage and their Citations in the Academic Publications: A Case Study
Authors: Abdul Jessy , Rao Mahabaleshwara , Puranik Amitha
Published: December 2018

The advancement of science and technology has impacted functioning of the libraries of higher educational institutions, and the mode of providing resources for various academic activities. For many years, libraries attached to educational institutions have been labouring with the question of how to determine the value of journals in their specific library collection. The Health Sciences Library of Manipal Academy of Higher Education at Manipal, subscribed a vast number of online journals for their users. A relation between the usage and citations of subscribed online journals might provide a basis for the collection management in the libraries of academic and research institutions. The current study resolved to identify whether relationship exists between usage of subscribed online journals and their citations in the academic publications of the health science professionals from 2010 to 2015. The study found a statistically significant relationship between subscribed online journal usage and their citations in the publications through the inferential test of Spearman’s rank-order correlation. For collection development of online journals, libraries can utilise the usage or citation data of journals as a decision making tool.
Selecting an Appropriate Web-Scale Discovery Service: A Study of the Big 4’s
Authors: Kumar Vinit
Published: December 2018

Seeing the dynamic user demands the libraries are changing their approach to the user services. The web-scale discovery (WSD) service is the latest attempt in this direction. There are several players in the marketplace providing solutions for WSD with products having basic features and subtle features as well. As more players are entering the marketplace, it becomes challenging to select appropriate WSD system. It is also paramount for the library managers to be aware of the myriad range of features and underlying technology of WSD. This understanding will be for making informed purchase decisions. This paper attempts to explain in detail the components of a typical WSD system. Further, the paper evaluates the features of the Big 4’s in WSD. The paper concludes by discussing some of the parameters to consider while evaluating the WSD system.
Publications by Faculty Members of Humanities and Social Science Departments of IIT Kharagpur : A bibliometric study
Authors: Bhui Trishna , Sahu Nivedita Bhattacharyya
Published: December 2018

This paper evaluates the citation count of article publications in journals by faculty members in the Humanities and Social Science (HSS) Departments of Indian Institute of Technology (IIT) Kharagpur. The publication data is retrieved from the individual bio-sketch and annual reports available in the websites for 17 years from 2000-2016. Web of Science database has been used for counting the citations. Parameters like total publications in journals, most preferred journal for publication, highly cited journals, collaborative status of faculty publications and thereby their citation counts, faculty member receiving highest citation are studied. The finding reveals that 623 articles are found in total 359 journal. There is an increasing trend in the number of publications over the years. The journal named Psychological Studies ranked first with 27 publications of faculties whereas Journal of Business Ethics received highest citations and grabbed the first position amongst the journals. Collaborative researches by three authors received maximum citations. The faculty members are engaged in variant fields of research but the impact is higher at national level than that of international level. Sage is found to be the most preferred publisher publishing journal articles of the faculty members from HSS Departments of IIT, Kharagpur.
Experimental Studies on Axial Bolted Joint between E Glass Epoxy Flat Laminate and Steel Flat Plates Subjected to Uni-Axial Tensile Repeated Loading for 15 Cycle
Authors: Chavali Sharada Prabhakar , Das Dilikeswar , Babu Ramesh
Published: December 2018

Axial bolted joint between EN-31 steel flat plates and E-Glass Epoxy thick, flat laminate consisting of helical winding layers with ±30° helical angle of winding and fabric prepreg layers, was realised with 3 number of M10, 12.9 property class steel fasteners on each side and assembly was tested under uni-axial tensile repeated loading and unloading up to 8.1 ton proof load and to 0 respectively, for 15 cycle. Aim of the experiment was to study the damage induced if any and further increased, in E-Glass epoxy laminate near joint regions, under tensile repeated loading and unloading for 15 cycle. Total length, width and thickness of metal composite axial bolted joint test assembly were 700 mm, 150 mm, and 22 mm, respectively. Longitudinal and transverse strain was monitored at 31 strain gauge locations in composite laminate near joint regions, in all the 15 cycle. For first cycle, longitudinal strain was plotted during loading up to proof load of 8.1 ton and unloading to 0, to check the linearity of strain variation with increase and decrease in load, respectively. It was observed that strain at all strain gauge locations was varying linearly. Maximum strain measured was 4035 micro strain in 1st cycle. Residual strain at all strain gauge locations was observed very less. No defects were induced in composite laminate after 15 cycle.
Data Analysis and Validation of Acquired Temperature Data on Underwater Platform
Authors: Kumar Arun , Anjaneyulu Lokam
Published: December 2018

Underwater missiles are launched from canister by hot gasses produced by a gas generator. Hot gasses eject the missile out of canister, positioned on an underwater platform in high seas at a depth of 50 m to 70 m. During development phase of submarine launched missile, maximum number of physical parameters related to platform and launching mechanism are acquired on a data acquisition system on-board platform and selected critical parameters are transmitted to control station in real time through an optical data communication link. Missile parameters are recorded on-board and transmitted to the control station by delayed transmission technique once the missile is out of water. Exit velocity of missile is very important parameter for the missile trajectory and range, which depends upon the heat loss in canister and annular gap pressure between missile and canister during the ejection process. Prediction of exit velocity is validated by heat loss calculation by measured temperature at different stations during the test. Temperature measurement is carried out by sensors mounted on the inner wall of canister and also by jumping type of temperature sensor, which measures canister gas temperature. In spite of all efforts, few sensors do not work as expected. It is important to measure various parameters according to instrumentation measurement plan. In case of temperature measurement, sometimes, it is required to predict temperature at location, where sensor was originally not mounted. To validate the recorded test data, another set of data is needed for which one has to wait till next test is conducted that may take years and practically impossible to ensure identical test setup and environmental condition. A mathematical approach to predict temperature at required location and to validate the recorded test data is presented.

 

 
A Compact Reconfigurable Multi-mode Resonator-based Multi-band Band Pass Filter for Intelligent Transportation Systems Applications
Authors: Triapthi Shivesh , Pathak Nagendra Prasad , Parida Manoranjan
Published: December 2018

A compact wide band reconfigurable bandpass filter (BPF) which utilises a hemi-circular flower shaped multimode resonator (MMR) is presented. The proposed MMR provides three resonant modes which fall within the broad frequency spectra. Among these, two modes are even and one is odd. These modes are optimised by varying the dimensions so as to obtain the desired frequency response. The fractional bandwidth is more than 96 per cent. The filter can be operated as multi-band BPF. In OFF condition of ‘Pin’ diode, the centre frequencies are 2.43 GHz, 3.5 GHz, and 5.9 GHz in ON condition of ‘Pin’ diode centre frequencies are 2.43 GHz, 3.5 GHz, 5.9 GHz, 6.5 GHz, and 8.8 GHz which are used for vehicular, WiMAX, intelligent transportation systems and satellite communication respectively. Microstrip filter structures are integrated with ‘Pin’ diodes. Appropriate biasing has been provided by choosing lumped components with precise values. The insertion loss in OFF condition are 0.5 dB, 0.67 dB, and 0.8 dB and in ON condition 0.5 dB, 0.7 dB, 1.2 dB, and 1.9 dB. The measured results agree well with the full-wave simulated results.
Effect of two pre-freezing methods on quality of sexed semen in Ettawa Grade goat
Authors: Ondho Y.S. , Udrayana S.B.
Published: December 2018

The aim of this study was to determine the influence of pre-freezing different procedures to the quality of Ettawa Grade goat frozen semen-sexing. The research material was semen sexing consisted of 2 layers those were top layer and bottom layer. The quality of frozen semen sexing was observed by comparing the pre-freezing technique (factory standard operating procedure: FSOP) according to the  Artificial Insemination Center operating procedure (pre-freezing by placing the straw of semen for about 4 cm above liquid nitrogen for 9 minutes) with the modification procedure (MP), pre-freezing by placing the straw of semen 16 cm above liquid nitrogen for 9 minutes and then it was lowered to 4 cm above liquid nitrogen for 9 minutes during the pre-freezing phase. The parameters observed were motility, progressive motility, hyperactivation, and sperm linearity. Data were analyzed using Student's t-test.The results of this study indicated that the quality of sexed-semen in the standard operating procedures of frozen semen compared to the treatment of modifications to the top and bottom layers were motility at the top layer (46.06 ± 7.52% vs 55.6 ± 7.78%) and bottom layer (36.82 ± 6.49% vs. 41.47 ± 6.57%); progressive top layer (16.34 ± 4.27 vs. 32.83 ± 5.9%) and bottom layer 15.97 ± 2.72% vs. 19.79 ± 3.97%); hyperactivity in the top layer (0.81 ± 0.6% vs 4.09 ± 1.98%) and the bottom layer (0.71 ± 0.68% vs. 1.50 ± 1.05%); linearity consisted of linear and non-linear, the top layer (12.19 ± 2.94 vs. 20.52 ± 3.97%) and bottom layer (12.32 ± 2.63 vs 14.70 ± 2.6); while non-linear in top layer (0.14 ± 0.2 vs 0.68 ± 0.85%) and bottom layer (0.4 ± 0.13% vs 0.34 ± 0.4%). The conclusions in this study indicated that the quality of the frozen sexed-semen that has processed by pre-freezing modification technique was better than the frozen sexed-semen obtained from the Artificial Insemination Center Standard Operating procedure.
Egg's vitamin E deposition of Kedu breeder chicken fed improved diets
Authors: Wahyuni H.I. , Suthama N. , Mangisah I. , Krismiyanto L.
Published: December 2018

The research aimed to evaluate dietary vitamin E deposited into the egg of Kedu breeder hen reared in situ and fed an improved diet supplemented with vitamin E. A total of 75 breeder hens and 15 cockerel of Kedu chicken aged ± 12 months, with average body weight of 1667 ± 237 and 2295 ± 250 g/bird, respectively, were distributed into 15 units of semi intensive housing system. A completely randomized designed (CRD) was arranged in the present research with 3 dietary treatments, namely farmer formulated ration (T0), improved ration (T1), and T1 + 6.28 mg/kg vitamin E (T2). Parameters observed were feed consumption, consumption and retention of vitamin E, egg’s vitamin E, egg’s vitamin E deposition efficiency, hen day production (HDP) and egg weight. All data gathered were subjected to analysis of variance and Duncan’s multiple range test to differentiate between treatments. Variables, except feed consumption, HDP and egg weight, were significantly (P<0.05) influenced by dietary treatment. Vitamin E consumption and retention, and deposition increased due to feeding effect of improved diet and supplementation of vitamin E. Dietary vitamin E of farmer’s ration deposited into the egg indicated the highest value (229.23%) followed by improved ration (51.85%), and improved ration + vitamin E was the lowest (5.38%). In conclusion, Kedu hen is likely have a limitation on vitamin E deposited into the egg when the improved ration supplemented with vitamin E is fed, and vitamin E supplementation should be implemented together with the increase of fat content in the ration.
Razón y emoción en la selección de pareja online de los chilenos / Reason and emotion in Chileans partner’s online selection
Authors: Tello Navarro Felipe
Published: December 2018

En línea con la Teoría Critica, las páginas de citas (dating websites) son consideradas como un elemento que “racionaliza” las interacciones sexual-emocionales contemporáneas (lógica de los “mundos hostiles”). Por medio de una encuesta online y entrevistas, este trabajo analiza los criterios de elección de pareja de los usuarios chilenos en los sitios de encuentro digital. El objetivo es poner a prueba la hipótesis de la “racionalización”. Los datos muestran que a pesar de la variedad de criterios de elección de pareja, estos deben cumplir dos requisitos: a) permitir observar el capital sociocultural de los otros; b) y hacerlo sin romper el imaginario exclusivamente emocional del proceso.
From technology transfer to innovation-based rural development: A necessary turn at the Indio Hatuey experimental station
Authors: Miranda Tortoló Taymer , Machado Martínez Hilda , Suset Pérez Antonio , Lamela López Luis , Oropesa Casanova Katerine , Alfonso Yanes Juan Albero , García Naranjo Marco Antonio , Campos Acosta Iraida María
Published: December 2018

The collapse of the socialist bloc in the early 1990s led to a severe economic crisis in Cuba, unleashing various processes of change to confront the situation. One such process involved taking a new look at the role of the scientific sector in the management and development of science, technology and innovation, and moving from a reductionist approach to a holistic, endogenous and territorial one. This article describes a process of change that occurred at the Indio Hatuey Experimental Station for Pasture and Forage, or EEPFIH, an experimental station for research and education in Matanzas province, Cuba. This article also presents environmental outcomes obtained on farms as a result of this new approach, and institutional outcomes such as the creation of new structures making it possible to address issues such as food security and sovereignty, sustainable agriculture, and climate change at the local and provincial levels. These transformations allow the EEPFIH to respond effectively to the demands of Cuban society in collaboration with other institutions, implementing practices that stimulate these institutions to play a central role in managing their development. More horizontal spaces for exchange and innovation have been opened up, and new mechanisms for management established, consolidating alliances and connections among actors at different levels. Please refer to Supplementary Materials, Full text Spanish version of this article, for a full text Spanish version of this article.
BMAL1 but not CLOCK is associated with monochromatic green light-induced circadian rhythm of melatonin in chick pinealocytes
Authors: Ma Shuhui , Wang Zixu , Cao Jing , Dong Yulan , Chen Yaoxing
Published: December 2018

The avian pineal gland, an independent circadian oscillator, receives external photic cues and translates them for the rhythmical synthesis of melatonin. Our previous study found that monochromatic green light could increase the secretion of melatonin and expression ofCLOCKandBMAL1in chick pinealocytes. This study further investigated the role ofBMAL1andCLOCKin monochromatic green light-induced melatonin secretion in chick pinealocytes using siRNAs interference and overexpression techniques. The results showed that si-BMAL1destroyed the circadian rhythms ofAANATand melatonin, along with the disruption of the expression of all the seven clock genes, exceptCRY1. Furthermore, overexpression ofBMAL1also disturbed the circadian rhythms ofAANATand melatonin, in addition to causing arrhythmic expression ofBMAL1andCRY1/2, but had no effect on the circadian rhythms ofCLOCK,BMAL2andPER2/3. The knockdown or overexpression ofCLOCKhad no impact on the circadian rhythms ofAANAT, melatonin,BMAL1andPER2, but it significantly deregulated the circadian rhythms ofCLOCK,BMAL2,CRY1/2andPER3. These results suggested thatBMAL1rather thanCLOCKplays a critical role in the regulation of monochromatic green light-induced melatonin rhythm synthesis in chicken pinealocytes. Moreover, both knockdown and overexpression ofBMAL1could change the expression levels ofCRY2, it indicatedCRY2may be involved in theBMAL1pathway by modulating the circadian rhythms ofAANATand melatonin.
Sex hormones, obesity and type 2 diabetes: is there a link?
Authors: Gambineri Alessandra , Pelusi Carla
Published: December 2018

An imbalance in sex hormones has an important impact on type 2 diabetes (T2DM) mainly through the involvement of visceral adipose tissue. Androgens have an interesting sex-dimorphic association with T2DM, since hyperandrogenism in females and hypogonadism in males are risk factors for T2DM. Thus, treatments aimed at correcting hyperandrogenism in females and hypogonadism in males may prevent the development of T2DM or help in its treatment.
Necmettin Erbakan Üniversitesi Diş Hekimliği Fakültesi’ne Başvuran Hastaların Dental Anksiyete Düzeylerinin Değerlendirilmesi
Authors: Mağat Güldane
Published: December 2018

Amaç: Bu
çalışmanın amacı, hastaların diş hekimlerinde yaşanan kaygı düzeylerinin
prevelansını belirlemek ve anksiyete düzeylerinin yaş, cinsiyet, eğitim düzeyi
ve diş hekimi ziyaret sıklığı ile ilişkisini değerlendirmektir.Gereç ve Yöntemler:Bu
çalışmaya Necmettin Erbakan Üniversitesi Diş Hekimliği Fakültesi’ne başvuran,
yaşları 18-85 arasında (Ortalama 36,96 ± 14,74) değişen, 404 kadın (% 53,9) ve
346 erkek (% 46,1) toplam 750 birey katıldı. Dental anksiyete düzeyini
belirlemek için Corah Dental Anksiyete Skala (CDAS) formu kullanıldı. Verilerin
analizinde tanımlayıcı istatistikten ve Ki-kare testinden yararlanıldı.Bulgular:Dental
anksiyeteye sahip birey oranı %24 (n=180) olarak saptandı. Eğitim düzeyleri ve
diş hekimine gitme sıklığı dental anksiyeteye üzerine istatistiksel olarak
etkili değilken (p>0,05); yaş ve cinsiyet istatistiksel olarak etkili idi
(p<0,01). Yaş azaldıkça dental anksiyete düzeyi de azalmaktaydı. Dental
anksiyete düzeyi ise bayanlarda erkeklerden daha fazla idi.Sonuçlar:Bu
çalışmanın sonuçları, dental anksiyete sahip bireylerin sayısının fazla
olduğunu göstermiştir. Yaş ve cinsiyet dental anksiyete üzerine önemli bir
faktörken diş hekimine gitme sıklığı ve eğitim düzeyi anksiyete üzerine etkili
birer faktör değildir. Diş hekimleri kadın ve genç hastaların dental anksiyete
seviyelerinin daha yüksek olduğunu göz önünde bulundurmalıdırlar.Anahtar Kelimeler:dental
anksiyete, yaş, cinsiyet
PERCEPCIÓN DE LA PERSONA ADULTA MAYOR ACERCA DE LOS FACTORES QUE DETERMINAN LA PARTICIPACIÓN AL PREDEPORTIVO VOLIOCHO DEL CANTÓN DE SANTO DOMINGO DE HEREDIA, COSTA RICA
Authors: Herrera Monge María Fernanda , Salas Cabrera Jorge , Fonseca Schmidth Héctor , Alonso Ubieta Suyen , Álvarez Bogantes Carlos
Published: December 2018

El objetivo de esta investigación fue conocer los factores que determinan la participación de la persona adulta mayor en el predeportivo voliocho del cantón de Santo Domingo de Heredia. Este es un estudio de teoría fundamentada, con enfoque cualitativo. Participaron 20 personas adultas mayores con edades entre los 65 y 81 años, con 7 años o más de practicar el juego pre-deportivo del voleibol, llamado “voliocho”. Para la recolección de los datos se utilizaron las técnicas de historia de vida, la entrevista semiestructurada y la observación pasiva. El análisis fue realizado por medio de la codificación en categorías establecidas por la Teoría Social Cognitiva de Bandura (1986). Los resultados muestran que los principales factores que determinan la participación son la autoeficacia percibida, los beneficios esperados, el autocontrol, las habilidades motrices, las relaciones del entorno social y el ambiente físico. En conclusión, se puede apreciar la importancia que tienen los factores personales, conductuales y ambientales, para poder iniciar y mantener, con el tiempo, cualquier programa físico-deportivo para las personas adultas mayores.
EL COMPROMISO Y ENTREGA EN EL APRENDIZAJE, LA COMPETENCIA MOTRIZ PERCIBIDA Y LA ANSIEDAD ANTE EL ERROR Y SITUACIONES DE ESTRÉS: FACTORES DE MOTIVACIÓN DE LOGRO DURANTE LAS CLASES DE EDUCACIÓN FÍSICA EN ADOLESCENTES
Authors: Márquez-Barquero Magally , Azofeifa-Mora Christian
Published: December 2018

Objetivo: determinar los factores asociados a la motivación de logro en los estudiantes de III Ciclo (séptimo, octavo y noveno) de la Educación General Básica durante las clases de Educación Física. Metodología: Se aplicó el cuestionario AMPET (Achievement Motivation in Physical Education Test) a un total de 396 estudiantes (178 mujeres y 218 hombres) de secundaria en cinco centros educativos públicos ubicados en el cantón Central de la Provincia de Heredia, Costa Rica. Se realizó análisis descriptivo promedios y desviaciones estándar, ANOVA factorial 2x3 para grupos independientes. Resultados: Se observan diferencias (p = .000) en el factor de compromiso y entrega en el aprendizaje según el nivel académico. Al realizar un post-hoc de Tukey, se encontró que a menor nivel académico mayor es el compromiso y entrega en el aprendizaje; es decir, los estudiantes de séptimo grado reflejan un mayor puntaje en el factor de compromiso y entrega en el aprendizaje (4.03±.06) en comparación con los estudiantes de octavo nivel (3.60±.05) y los estudiantes de noveno nivel (3.62±.06). Con respecto al factor competencia motriz percibida, se obtuvieron diferencias (p =.000) según el sexo. Lo anterior refleja que los hombres, poseen una mayor competencia motriz percibida (3.03±.06) en comparación con las mujeres (2.62±.07). En el factor ansiedad ante el error y las situaciones de estrés, se encontraron diferencias estadísticamente significativas (p =.000) según el sexo, las mujeres obtuvieron un puntaje mayor, en la ansiedad ante el error y las situaciones de estrés 2.51±.06) en comparación con los hombres (2.16±.05). Conclusión: La investigación reveló que las mujeres responden diferente que los hombres a los factores asociados a la motivación de logro y cabe resaltar que EF es una fuente de estrés para ellas, dato importante de analizar para identificar a qué obedece y determinar si se debe a que existe un desfase en la competencia motriz, lo que acarrea consecuencias en el comportamiento y comparar si dicho comportamiento se repite en los centros educativos de las distintas regiones del país.
IDENTIDADES Y POLÍTICA EN LA ERA DE LOS FUNDAMENTALISMOS
Authors: Alvarenga Venutolo Patricia
Published: December 2018

Con el fin de contribuir a la discusión sobre la pasada ronda electoral en febrero de 2018 en Costa Rica, el presente artículo acude a teóricos de la política, como Norbert Lechner, Ernesto Laclau y Chantal Mauffe. Este se propone explicar por qué la instauración de ver- dades inconmovibles en la esfera pública atenta directamente contra las dinámicas propias de lo político. Pero, a la vez, propone ubicar en el análisis teórico cómo en el juego político entran en disputa dinámicas culturales contradictorias que alimentan las subjetividades po- líticas. Reflexiona acerca de los riesgos que actualmente corren los significativos triunfos de los movimientos en torno a la sexualidad, ante la embestida del fundamentalismo religioso a la cultura de la tolerancia. El artículo también se propone ubicar el caso costarricense en dinámicas propias de lo que podríamos llamar la globalización cultural, la cual hoy tiende hacia el desprecio de la agenda que se ha venido construyendo en torno a los derechos humanos, a partir de la Segunda Guerra Mundial. Se ofrecen reflexiones comparativas con Nicaragua y Guatemala.
Microscopic Calculation of Josephson Current in Tunnel Junctions with Two-Gap Superconductors
Authors: Shutovskyi A. M. , Svidzinskyi A. V. , Sakhnyuk V. E. , Pastukh O. Yu.
Published: December 2018

Quasiclassical equations of the one-gap superconductivity theory have been applied to superconductors with two energy gaps. Using the equations for Green’s functions obtained in the t-representation, the Josephson current density through tunnel junctions with two-gap superconductors is calculated.
Phase Equilibrium, Thermodynamic Limit, and Melting Temperature in Nanocrystals
Authors: Bulavin L. A. , Alekseev O. M. , Zabashta Yu. F. , Lazarenko M. M.
Published: December 2018

The phase equilibrium condition is shown to be strictly satisfied only in the thermodynamic limit. The notion of melting temperature in the thermodynamic limit is introduced. Formulas are obtained that determine the melting conditions and the melting temperature for finite systems including nanocrystals. The validity of those formulas is confirmed, by comparing them with experimental data for organic materials in porous solids.
“In-gap” Spectroscopy: Reflected-Wave Phase and Film Characterization
Authors: Turchin A. V.
Published: December 2018

Optical methods that are used to characterize the state of a surface covered with films are based on the measurement of either the ratio between the complex reflection coefficients for mutually orthogonal light polarizations (ellipsometry) or the magnitudes of reflection coefficients themselves; afterward, the parameters of films such as their number, thicknesses, and transparencies can be determined by the fitting, while solving the corresponding inverse problem. In order to extend the set of quantities that can bemeasured experimentally, a method is proposed that allows the phase of the reflected light wave to be determined, by analyzing the spectral features for light reflected from a plane-parallel gap between the surface of analyzed specimen and the environment. In particular, the spectrum obtained, by using the “moving specimen” procedure, can be transformed into the spectral dependences of the magnitude and phase of the reflection coefficient. As a result, the inverse problem of finding the dielectric permittivity of a single-layer film is reduced to the solution of a linear matrix equation, which makes the proposed method more advantageous in comparison with the ellipsometric one, for which there is no direct relationships between the ellipsometric angles and the physical parameters of the film.
The Quantum analysis of Nondegenerate Three-Level Laser with Spontaneous Emission and Noiseless Vacuum Reservoir
Authors: Abebe T.
Published: December 2018

The analysis of quantum properties of the cavity light produced by a coherently driven nondegenerate three-level laser possessing an open cavity and coupled to a two-mode vacuum reservoir is presented. The normal ordering of noise operators associated with the vacuum reservoir is considered. Applying the solutions of the equations of evolution for the expectation values of the atomic operators and the quantum Langevin equations for the cavity mode operators, the squeezing properties, entanglement amplification, and the normalized second-order correlation function of the cavity radiation are described. The three-level laser generates squeezed light under certain conditions, with maximum intracavity squeezing being 50% below the vacuum-state level. Moreover, it is found that the presence of spontaneous emission increases the quadrature squeezing and entanglement and decreses the mean photon number of the two-mode cavity radiation.
Nature of Isoscalar Dipole Resonances in Heavy Nuclei
Authors: Abrosimov V. I. , Davydovska O. I.
Published: December 2018

The isoscalar dipole nuclear response reveals low- and high-energy resonances. The nature of isoscalar dipole resonances in heavy spherical nuclei is studied, by using a translation-invariant kinetic model of small oscillations of finite Fermi systems. Calculations of the velocity field at the centroid energy show a pure vortex character of the low-energy isoscalar dipole resonance in spherical nuclei and confirm the anisotropic compression character of the high-energy one. The evolution of the velocity field as a function of the excitation energy of the nucleus within the resonance width is studied. It is found that the low-energy isoscalar dipole resonance retains a vortex character, while with this collective excitation also involves a compression, as the energy increases. The high-energy resonance keeps the compression character with a change in the excitation energy within the resonance width, but the compression-expansion region of the velocity field related to this resonance shifts inside the nucleus.
Approximation of Cluster Integrals for Various Lattice-Gas Models
Authors: Ushcats S. Yu. , Ushcats M. V. , Sysoev V. M. , Gavryushenko D. A.
Published: December 2018

An approximation for cluster integrals of an arbitrary high order has been proposed for the well-known lattice-gas model with an arbitrary geometry and dimensions. The approximation is based on the recently obtained accurate relations for the convergence radius of the virial power series in the activity parameter for the pressure and density. As compared to the previous studies of the symmetric virial expansions for the gaseous and condensed states of a lattice gas, the proposed approximation substantially approaches the pressure values at the saturation and boiling points. For the Lee–Yang lattice-gas model, the approximation considerably improves the convergence to the known exact solution.
The Effect of Shallow Impurities on the Light Absorption by the Nanocrystals CdS
Authors: Boichuk V. I. , Leshko R. Ya. , Karpyn D. S.
Published: December 2018

The energy of quantum transitions of exciton-impurity states in a heterosystem with nanocrystals is calculated. The absorption spectra associated with the indicated transitions are analyzed. It is qualitatively shown that broad luminescence bands in the red region are related to the impurity acceptor states, and the high narrow ones in the violet region to pure excitonic states and excitonic states interacting with the ion of a donor. The satisfactory quantitative agreement of our calculations with experimental data for high energy luminescence bands is obtained.
Hypothesized mechanisms through which acute exercise influences episodic memory
Authors: Loprinzi PD , Ponce P , Frith E
Published: December 2018

Emerging research demonstrates that exercise is favorably associated with several cognitive outcomes, including episodic memory function. The majority of the mechanistic work describing the underlying mechanisms of this effect has focused on chronic exercise engagement. Such mechanisms include, e.g., chronic exercise-induced neurogenesis, gliogenesis, angiogenesis, cerebral circulation, and growth factor production. Less research has examined the mechanisms through which acute (vs. chronic) exercise subserves episodic memory function. The purpose of this review is to discuss these potential underlying mechanisms, which include, e.g., acute exercise-induced (via several pathways, such as vagus nerve and muscle spindle stimulation) alterations in neurotransmitters, synaptic tagging/capturing, associativity, and psychological attention.
Strengthening of reinforced concrete frames with engineered cementitious composite panels
Authors: Ayatar Mehmet Engin , Canbay Erdem , Binici Barış
Published: December 2018

Infill walls in reinforced concrete frames are susceptible to failure owing to their brittle nature. Their interaction with boundary columns during earthquakes may also cause shear damage in the columns. It is crucial to employ effective seismic strengthening strategies in order to mitigate the seismic risk induced by the infill walls. In this study, a new strengthening technique, conducted by bonding engineered cementitious composite (ECC) precast panels onto infill walls, was investigated. Three reinforced concrete frames, termed bare frame, infilled frame and strengthened frame, were tested by using the pseudo-dynamic testing method. The test specimens were three-storey, three-bay, half-scaled frames with the central bay having hollow clay brick infill walls. The specimens were subjected to three consecutive ground motions scaled to represent earthquakes with return periods of 144, 475 and 2475 years. The experimental results were compared to observe the influence of the infill walls on the reinforced concrete frames, and to demonstrate the performance of the proposed strengthening technique. It was found that application of ECC panels significantly increased the frame strength and stiffness while allowing the system to have a displacement ductility of about four.
Tapered beam–column analysis by analytical solution
Authors: Rezaiee-Pajand Mohammad , Masoodi Amir R. , Bambaeechee Mohsen
Published: December 2018

By calculating the accurate solution of the governing differential equation for a non-prismatic beam–column, the exact elemental stiffness matrix will be obtained. The Euler–Bernoulli beam theory is used in the proposed formulation. This study considers the second-order effects and flexibility of the connections and supports. The effects of the ends’ flexibilities are investigated by utilising the general boundary conditions of the governing differential equation. In addition, shape factors of 2 and 4 in which the cross-section moment of inertia changes by second- and fourth-order functions through the length, respectively, are studied separately. The suggested stiffness matrix is general and can be utilised in the various analyses for a non-prismatic member belonging to a plane frame with different types of connections and restraints. It should be added that the presented stiffness matrix can be used in the finite-element method. To demonstrate the abilities of the formulation, stability analyses of columns and frames with non-prismatic members are performed. Comparing the responses with the available results shows the accuracy, efficiency and capabilities of the presented matrix.