bluuebunny/crossref_metadata_2025 huggingface dataset:
Professionalism of Casino Employees: Relationship with Job Satisfaction and Organizational Commitment
Authors:   The Tourism Sciences Society Of Korea, Lee Min-Jae , Seo Won-Seok , Kim Jin-Young
Published: January 2019

With intensifying global competition in the casino industry, it has become critically important to strengthen employee professionalism. Nonetheless, there has been little research about this aspect. As such, we investigated how casino employees perceive the constructs that constitute professionalism and its impacts on job satisfaction and organizational commitment. From a survey of 141 employees in four casinos in Jeju Island, 137 responses were used in the analysis. First, factor analysis validated the two constructs of affective and normative commitments among three theory-suggested constructs of organizational commitments (affective, normative, and continuance commitments). Then, research hypotheses were tested by structural equation modeling (SEM). The results show that “the sense of calling” and “belief in public service” affected job satisfaction; “belief in self-regulation and autonomy” influenced affective commitment; and “using the professional organization as a major referent” affected both affective and normative commitments. We also found that job satisfaction affected affective and normative commitments. In conclusion, the contribution of this study lies in that we identified the sub-constructs of organizational commitment for the casino industry, and we found that perceived professionalism contributes not only to the individuals’ satisfaction but also to the commitment to the organization. Based on these findings, we provide meaningful implications to the industry.
Algorithms of Terminal Control of Multi-Copters
Authors: Pshikhopov V. Kh. , Medvedev M. Yu. , Gurenko B. V.
Published: January 2019

The article is devoted to the development of algorithms for terminal control of mobile objects. A moving object of multicopter type described by a nonlinear model of motion of a solid body in three-dimensional space is considered. A three-stage procedure for solving the problem of terminal control of a moving object when it moves to a given point is proposed. The main difference of the proposed procedure is the correction of the desired trajectory so that it passes through the current position of the moving object at each moment of time. This method of constructing the desired trajectory allows you to automatically adjust the speed when moving to a given point. The need for correction of the desired trajectory can be caused by the presence of obstacles, differences between the model and the real object, and the influence of external disturbances. At the first stage, the desired trajectory taking into account a given finite time of motion is constructed. The motion trajectory represents the desired velocity and orientation angles of a moving object of multi-copter type. At the second stage, the method of position-trajectory control is used to synthesize feedback, which provides stabilization of the moving object relative to the calculated desired trajectory. The result of the second stage is the thrust and torque generated by the motors, which are then recalculated in the speed of rotation of the rotors. At the third stage, the desired trajectory is corrected depending on the current position of the moving object. As a result of the correction, a singularity occurs at the target point. In order to eliminate the singularity at the target point, the problem is solved in the formulation of weak terminal control. Before the target point hits the given neighborhood, the velocity of the moving object is calculated based on the remaining distance and time of movement. When a given neighborhood of the target point is reached, the speed of movement becomes constant. The analysis of the closed-loop system is carried out, as a result of which the asymptotic stability of the desired trajectory and the hit of a moving object in a finite given neighborhood of the target point at a finite time are shown. The results of numerical modeling, confirming the performance of the proposed algorithms in the example of hexacopter, are presented.
Concept of Construction of Ergatical Interface of Multifunctional Aviation Complex with Integrated Modular Avionics
Authors: Vorobyov A. V. , Silvestrov M. M. , Begichev Y. I. , Kotitsyn L. O. , Levin D. N.
Published: January 2019

In the focus of this research are the concept of construction and the architecture of the ergatical interface of a prospective aviation complex using integrated modular avionics, which are based on the methodology of rational coordination of the aggregate properties of human operator interaction, technology and the image forming module of the management goal and application in the interests of increasing the efficiency of crew activity and flight safety. Information display and control systems, which are based on digital electronic devices and integrated information management, with the separation of the time of operations for monitoring and displaying data and providing the most convenient form of information representation, are examined in this article. In such systems, only the information that the pilot needs for a given flight mode is reproduced, or called upon them on demand. Wide opportunities in varying the volume and type of presentation of individual parameters depending on the flight modes require engineering and psychological justification for the principles of rational information support for the pilot in the process of solving professional problems. The results of comparative studies of the principles of mapping the spatial position of aircraft for three types of indication are presented: "view from aircraft to ground" (type 1), "view from ground to plane" (type 2) and "view of aircraft and "leader" from another aircraft located behind at the same altitude and ground sp eed" (type 3), which showed the advantages of the third type of indication — information command-leader display. This type of indication provides the pilot with the geocentric image of the flight relative to the earth’s normal coordinate system, the directions of which are the vector of the ground speed, the gravitational vertical and the horizon line, and the image of the control objective and app lication in the form of reflection of change in attitude and change in the configuration position in accordance with the "do as I do" management principle. The possibilities of using IMA-technology and mnemonic frames with information command-leader indication, which allow to increase the efficiency of the crew of multifunctional aviation complexes, are presented.
THE ROLE OF THE WORLD CONGRESS OF UKRAINIANS (UWC) IN CONSOLIDATION OF UKRAINIANS IN POSTCOLONIAL OPTION
Authors: Kononenko Alla
Published: January 2019

The article says that young people, starting with kindergarten, school, higher education institution, along with their mentor mentors, should deal with the issues of consolidation of Ukrainians. By the way, uniting Ukrainians, for whom the unresolved war with Russia is a big problem, there is a falsification of real facts in mass media, changing worldview, vital values and judgments is rather difficult. After the restoration of Ukraine's independence, the issue of the dissemination of truthful information about Ukraine and Ukrainians around the world became very relevant, which directly involves the Ukrainian Ukrainian Civic Congress (UCU), whose activities help to bring the full political, social, economic and other aspects to the Ukrainian and world community. the life of the Ukrainian diaspora and the Ukrainian state. I think that the most important thing in this issue is the formation of a national identity. I set myself before the goal to find out how the world can influence or help a person who does not realize which national group she belongs to. What does she know about her own historical territory, does she owns and uses the language of the state of Ukraine, which (its) citizen considers himself ... Not the formation of a national identity leads to a threat to the national security of the state - the layered society, the low level of culture and political culture (it prompts buckwheat), separatism intensifies, civil society is not seriously formed or in any way formed ... Returning to the main task of the UWC - the preservation of the national identity of Ukrainians, we must emphasize that this is the support and development of Ukrainian culture, the protection of the rights and interests of Ukrainians both in the diaspora and in Ukraine, the coordination of the international ties of their constituent organizations that support and develop Ukraine's national identity, spirituality, language, culture and heritage of Ukrainians around the world. The UWC assists in the development of public life of Ukrainians in the countries where they live, and also strengthens the positive attitude towards Ukrainians and the Ukrainian state and protects the rights of Ukrainians, regardless of their place of residence, in accordance with the Universal Declaration of Human Rights. So the article is intended for educators in the first place. To sum up, it should be noted that the formation of a national identity is one of the main tasks of the Ukrainian state at the present stage. To implement it, it is necessary to actualize the efforts of educators of all levels and non-governmental organizations in the field of public and, above all, interethnic relations.
CORRUPTION AND BIG BUSINESS: THE REALITIES OF UKRAINE
Authors: Teleshun Yaroslav
Published: January 2019

This paper examines the problem of large capital influence on public policy. The main sources of corruption in modern societies are considered: clientelism and rent-seeking. It was identified and analyzed the problem of clientelism in developed democracy and in States with unstable institutional environment, including Ukraine. Clientelism involves such relationships, which are based on a mutually beneficial services exchange between persons of different status and power, the client is usually provided with protection in exchange for his loyalty and political support. The stability of client-patrimonial connections is profitable for both socially unequal sides: for patron, for them these links are the mechanisms of their influence, and for the clientage - a form of protection. In turn, the economic rent is received by advocacy groups through a monopoly on scarce resources or through access to an administrative resource (the ability of the government, local authorities to create artificial shortages, licensing mechanisms, import tariffs regulation, tax rate regulation, open bidding with "special" conditions, etc.). The problem of the rentier formation and functioning, both in developed democracies and in States with unstable institutional environment, in particular in Ukraine, is analyzed. The first approach, under the "rentier", is understood by persons who live on the basis of rent, that is, income derived from capital, usually in the form of bank deposits, securities, revenues from real estate, land, business, copyright, etc. According to this definition, there is no clear distribution between the rentier and the entrepreneur. The second approach, understands not the sources of income of individuals, but the way of their lives. At that, this way of life absolutely contrasts with the way of life of an entrepreneur. The main threats to society in connection with the functioning of clients and rent-seeking groups in societies like the Ukrainian one are identified.
DEPÓSITOS FLÚVIO-EÓLICOS DA FORMAÇÃO SÃO SEBASTIÃO, NA BORDA OESTE DA BACIA DE JATOBÁ, NORDESTE DO BRASIL
Authors: Veras José Diego Dias , Neumann Virginio Henrique de Miranda Lopes , Valença Lucia Maria Mafra , Cabral Flávia Araújo de Arruda , De Oliveira Silvio Roberto
Published: January 2019

A Bacia de Jatobá, juntamente com a Sub-bacia de Tucano Norte, representam a extremidade setentrional do Sistema Rifte Recôncavo-Tucano-Jatobá, que possui direção geral N-S até a altura do Rio São Francisco, onde sofre uma inflexão para E-NE.  Ao contrário das bacias da margem continental que evoluíram ao estágio de margem passiva, as Bacias Recôncavo, Tucano e Jatobá, constituem um ramo do Rifte Sul-Atlântico abortado no Eoaptiano. A Formação São Sebastião está inserida no estágio rifte da Bacia de Jatobá. Possui uma fácies fluvial que é composta por arenitos finos a grossos, por vezes conglomeráticos e, localmente, níveis seixosos. Os perfis estratigráficos realizados nesta fácies e a associação de fácies ressaltam suas características de composição e estruturas. A fácies eólica apresenta uma característica marcante como a sua bimodalidade no tamanho dos grãos de quartzo. Além disso, as estratificações cruzadas de alto ângulo corroboram a definição de ambiente eólico. São arenitos finos, às vezes médios, bem selecionados e variando de esbranquiçados a amarelados. Portanto, esta unidade é caracterizada como um sistema fluvial entrelaçado de alta energia que, posteriormente, passa por um retrabalhamento eólico
ANÁLISE TECTÔNICA DO SEGMENTO CENTRAL DA ZONA DE CISALHAMENTO PERNAMBUCO LESTE, PROVÍNCIA BORBOREMA, NE DO BRASIL
Authors: França Rafaela Henrique Mendes , Neves Sérgio Pacheco , Bezerra João Pedro Santana
Published: January 2019

Este trabalho apresenta dados de campo, petrográficos, aerogeofísicos e de sensoriamento remoto de ortognaisses que ocorrem no segmento central da zona de cisalhamento Pernambuco Leste (ZCPE), Bezerros (PE). O principal objetivo foi analisar a influência da ZCPE na evolução geodinâmica da Província Borborema. A interpretação dos mapas aerogeofísicos gamaespectrométricos permitiu a caracterização das litologias em relação aos seus teores de radioelementos (K, Th e U). A caracterização estrutural da área de estudo realizada a partir de dados geofísicos e de sensoriamento remoto (ASTER-GDEM) evidenciou o predomínio de lineamentos de direção NE-SW, resultantes de foliações a norte e a sul da ZCPE. As rochas miloníticas apresentam feições microestruturais de deformação a temperaturas relativamente baixas (400-500°C), com grãos de quartzo apresentando extinção ondulante e recristalização por rotação de subgrãos e, mais raramente, bulging. A interpretação integrada dos dados proporcionou a delimitação das faixas miloníticas na área em estudo. A análise das características estruturais apresentadas pelos domínios adjacentes, Rio Capibaribe (subprovíncia Central) e Pernambuco-Alagoas (subprovíncia Sul), permitiu identificar que a ZCPE não separa blocos crustais distintos. Portanto, o segmento central da ZCPE, não pode ser considerado como um limite de terreno tectônico.
«Con licencia de la devoción y privilegio del regozijo»: las siestas en las celebraciones religiosas extraordinarias de la Valencia seiscentista
Authors: Villanueva Serrano Francesc
Published: January 2019

Las siestas o sesiones musicales vespertinas en los templos hispánicos son un objeto de estudio relativamente reciente. Su celebración suele asociarse a las festividades eucarísticas, en las cuales cumplía la función de atraer público a la adoración del Santísimo Sacramento, patente en el altar, y a los posteriores oficios de vísperas y completas. Las relaciones de fiestas valencianas del siglo XVII muestran diáfanamente que estos actos ―al igual que otros poéticos, dancísticos o combinación de ellos― tuvieron lugar asimismo en diversos templos de la ciudad durante las jornadas festivas de las grandes celebraciones extraordinarias ante otros objetos de veneración relacionados con el asunto particular como reliquias o imágenes. La minuciosidad de algunas descripciones también ayuda a conocer mejor cómo transcurrían estos eventos. 
La actividad musical en la catedral de la Seu d’Urgell en 1781-1801, a partir del ms.890 del “Llevador de la obra”
Authors: Benavent Peiró Joan
Published: January 2019

La documentación relacionada con la actividad musical conservada en los archivos catedralicios premite conocer como fueron las prácticas musciales de otros tiempos. Si en un primer término, tanto los códices, como los pliegos, como la música a papeles, muestran toda la actividad musical, las tipologías de agrupaciones musicales y los estilos musicales en boga, según las épocas presentes en un archivo concreto; en un segundo término, los registros documentales, relacionados con los gastos catedralicios y el quehacer cotidiano, juntamente con registros de actas capitulares y el estudio de los “Quinque libris”, permiten reconstruir una realidad social y musical mucha más amplia, que conforman una visión holística de un período en concreto. En el caso urgelense los libros de cuentas, conocidos como “Llevadors de l’obra”, brindan la oportunidad de conocer determinados detalles acerca del quehacer cotidiano catedralicio, con detalle de cuentas de compras, reparaciones y, en mayor medida, del apunte y conocimeinto de determinados escolanes, que no quedaron registrados en ningún otro documento catedralicio. Es por todo lo anterior por lo que el presente estudio, realizado a partir del vaciado sistemático de los aspectos relacionados con la activadad musical urgelense entre el 1781-1801, aporta nueva información dentro del período musical que estuvo bajo la tutela del maestro de capilla de la Catedral d’Urgell Bruno Pagueras Portavella.
Estructuras musicales en la obra poética de José Ángel Valente: de Schenker a Guillaume de Machaut
Authors: Pastor Comín Juan José
Published: January 2019

Los textos poéticos no constituyen entidades autorreferenciales limitadas a la propiedades de la palabra como signo lingüístico. Para José Ángel Valente, existe, más allá de la palabra, una estructura musical prelingüistica que contribuye a componer las reglas de interpretación de su obra literaria. Dichas claves musicales son imprescindibles para la comprensión extensa de los posibles sentidos comprendidos en sus versos y su consideración se impone como necesaria. En este trabajo veremos cómo la experiencia musical del poeta se convierte en instrumento decisivo para el ejercicio de la hermenéutica literaria.  
The Merchant of Venice at the Utah Shakespeare Festival
Authors: Volz Jim
Published: January 2019

A Production Notice for the Utah Shakespeare Festival's 2018 The Merchant of Venice.
Catalytic Purification of Gas Emissions from Carbon Dioxide and Sulfur
Authors: Ivanova M.S. , Vishnetskaya M.V. , Skrepleva I.Yu. , Tomsky K.O.
Published: January 2019

The optimal parameters of catalytic purification of flue gases from SO2 and CO2 in trifluoroacetic acid solutions are determined. It is shown that flue gas cleaning from carbon dioxide and sulfur dioxide using trifluoroacetic acid solutions as a catalyst is carried out at room temperature and atmospheric pressure with an efficiency of 100%. The process of gas purification from sulfur dioxide and carbon dioxide is carried out in a non-aggressive medium of trifluoroacetic acid (TFA) solutions. The possibility of increasing the absorption capacity of the reaction medium by pumping the exhaust gases through trifluoroacetic acid solutions has been established. At the same time, polluting waste gases — toxic sulfur and carbon oxides — are converted into higher oligomers (oxides), and then, as a result of their interaction with water, present directly in the reaction medium — TFA aqueous solution, into the corresponding acids. The formation of trifluoroacetic acid esters to a lesser extent leads to an increase in the absorptivity of the reaction medium, a reduction in the number of regeneration stages, a simplified separation of by-products, and, consequently, a simplification of their utilization process due to the absence of the need to purify the latter from these esters.
Emergence and Associated Risk Factors of Vector Borne West Nile Virus In¬fection in Ilorin, Nigeria
Authors: Matthew Kolawole Olatunji , Adelaiye Glory , Ikhevha Ogah Jeremiah
Published: January 2019

Background: West Nile Virus (WNV) is a mosquito-borne viral pathogen that is the causative agent of West Nile fever and encephalitis. Diagnostic tools for WNV infection in Nigeria are not well established hence the current prevalence rate of WNV infection in Nigeria is unknown. We aimed to establish the serological prevalence of WNV infection in febrile patients in Ilorin, Nigeria in 2016, and to assess the risk factors associated with the acquisition of the virus.
Methods: This was a cross-sectional study involving the screening of subjects presenting with febrile illnesses. While specific IgM ELISA was used to determine the seroprevalence, a closed-ended questionnaire was used to as­certain the risk factors associated with this viral infection.
Results: Fifteen (7.5%) of the respondents were positive for WNV infection. Subjects living in areas in close prox­imity to trees and bushes (P= 0.011) and stagnant water (P= 0.001) were at a higher risk of having WNV infection. Other risk factors associated with WNV among the respondents include the none use of insecticide (P= 0.001), sitting out at night (P= 0.044), HIV positivity (P= 0.003) and having an organ transplant (P= 0.002).
Conclusion: This study clearly shows a considerable WNV infection in Ilorin, with the presence of factors that can promulgate an outbreak, hence a need for further surveillance in the study area.
Seasonal Activity of Adult Mosquitoes (Diptera: Culicidae) in a Focus of Dirofilariasis and West Nile Infection in Northern Iran
Authors: Azari-Hamidian Shahyad , Norouzi Behzad , Noorallahi Ayoob , Ali Hanafi-Bojd Ahmad
Published: January 2019

Background: Mosquito-borne arboviruses such as West Nile, dengue, Rift Valley fever, and Sindbis viruses and the nematode Dirofilaria are reported in Iran, but there is little information on the seasonal activity of their vectors in the country. We aimed to determine the seasonal activity of adult mosquitoes (Diptera: Culicidae) in a focus of diro­filariasis and West Nile infection in Guilan Province, northern Iran. 
Methods: Collections were carried out using light traps in seven counties at least two times from random sites and every two weeks from a fixed site (Pareh Village, Rudbar County) during Aug–Dec 2015 and Apr–Oct 2016.
Results: Overall, 16327 adult mosquitoes comprising 18 species representing seven genera were identified. The most prevalent species were Cx. theileri (23.59%), Cx. tritaeniorhynchus (20.75%), Cx. pipiens (19.37%), Ae. vexans (18.18%), An. pseudopictus (10.92%) and An. maculipennis s.l. (5.48%). Aedes pulcritarsis and Cx. perexiguus were found for the first time in Guilan Province. The active season of adult mosquitoes extended from early May to early Oct in the fixed site. There was no significant regression between the abundance of adult mosquitoes and the meteor­ological data during active season in the fixed site (P> 0.05, R2= 0.31).
Conclusion: Though no significant regression between the abundance of mosquitoes and the meteorological data was observed during active season, temperature and rice fields had a great influence in starting and ending active season in the region.
Troubleshooting Real-Time PCR Screening for Leishmania infantum
Authors: Gil de Mendonça Philippe
Published: January 2019

Article's abstract is no available
The Path of Creating Co-Researchers in the File Hills Qu'Appelle Tribal Council
Authors: Dieter Jessica , McKim Lauren T , Tickell Jenna , Bourassa Carrie A , Lavallee Jaime , Boehme Gail
Published: January 2019

Currently, there is a need for implementing ethical, culturally safe practices when engaging in research with Indigenous communities. As a result, best practices in culturally-safe Indigenous health research have been created to mitigate the existing barriers in health and health research stemming from Canada’s colonial history. This article includes a brief examination of those best practices, including community-based participatory research, OCAP® principles, knowledge translation, and positioning communities as co-researchers. Furthermore, it provides an overview of a community-based research project that examines community members’ knowledge of and experiences with dementia. The central themes that emerged during this project are also discussed, reaffirming the need for a culturally safe dementia research model in Indigenous communities.
Kilka spostrzeżeń na temat odbioru tekstu nacechowanego ideologicznie
Authors: Laskowska Elżbieta
Published: January 2019

Autorka analizuje pod względem nacechowania aksjologicznego, w tym ideolo- gicznego, wybrany tekst. Tekst ten wyraźnie deklaruje światopogląd chrześcijański nadawcy. Następnie autorka artykułu omawia wyniki ankiety przeprowadzonej wśród studentów dziennikarstwa. Badani odpowiadają na pytania mające wskazać sposób rozumienia tekstu, przypisywaną autorowi ideologię, odczucia, jakie budzi tekst, oraz określić postawę ideologiczną badanych. Ankietowani studenci – w odpowiedzi na pytania dotyczące treści – w większości opierają się na tekście. To samo oparcie ma przypisywanie ideologii jego autorowi. Większość badanych uważa, że autor przejawia chęć narzucania swoich przekonań. Ideologiami deklarowanymi są w większości konserwatyzm i liberalizm, a najwięcej odrzuceń ma fundamentalizm religijny.
Obiekty ideologiczne w dyskursie parlamentarnym
Authors: Filipczak-Białkowska Anita
Published: January 2019

W artykule przedstawiona jest implementacja metody identyfikowania obiektów ideologicznych w dyskursie na przykładzie debaty parlamentarnej. Analiza prowadzona jest zgodnie z założeniami metodologicznymi gramatyki komunikacyjnej. Wykazała ona, że takie obiekty, jak demokracja, prawo do życia, ograniczenie liczby aborcji czy zapłodnienie in vitro mają status obiektów ideologicznych, bowiem uczestnicy dyskursu odwołują się do różnych parametrów, jakimi charakteryzują się te obiekty. Brak świadomości uczestników dyskursu społeczno-politycznego w zakresie wieloznaczności tych obiektów prowadzi do braku zrozumienia właściwego sensu generowanych w jego zakresie wypowiedzi.
„Kocham Cię” jako performatyw
Authors: Piotrkowski Maciej Sergiusz
Published: January 2019

Sformułowanie: „Kocham Cię” zazwyczaj kojarzone jest z opisem uczuć nadawcy tego komunikatu, jako coś, co mówi o stanie emocjonalnym mówiącego. Jednak nie zawsze tak jest. Istnieją takie wypadki użycia tego zdania, które nie służą funkcji poznawczej, kiedy „Kocham Cię” nie „zdaje sprawy” ze stanu uczuć nadawcy. Słowa te mają w tych wypadkach moc sprawczą, są działaniem. Wypowiedzenie, które jest „robieniem czegoś” John L. Austin nazywa „zdaniem performatywnym”, „wypowiedzią performatywną” bądź, w skrócie, „performatywem”. „Kocham Cię” zdaje się spełniać warunki takiego zaszeregowania w co najmniej trzech przypadkach. Po pierwsze, gdy zdanie to wypowiedziane jest dla stworzenia związku (to zazwyczaj pierwsze wypowiedzenie go przez nadawcę i odbiorcę, choć czas, jaki upłynie między tymi dwiema wypowiedziami może być długi). Po drugie, gdy mamy sytuację odnowienia takiego zobowiązania – do bycia w związku i działania na jego rzecz. Wreszcie w sytuacji, gdy inne formy okazania miłości są niemożliwe z różnych powodów.
Serialowy obraz spotkania międzykulturowego Studium przypadku serialu Dziewczyny ze Lwowa
Authors: Drąg Katarzyna
Published: January 2019

Artykuł dotyczy sposobu pokazania spotkania międzykulturowego Polaków i Ukraińców w serialu telewizyjnym. Serial Dziewczyny ze Lwowa został stworzony przez Polaków i prezentuje historie Ukrainek migrujących do Warszawy z przyczyn ekonomicznych. W tekście podjęto próbę ukazania najważniejszych wątków serialu z perspektywy komunikowania międzykulturowego. Omówiono recepcję serialu na podstawie recenzji opublikowanych w języku ukraińskim i w języku polskim. Zwrócono uwagę na kompetencje międzykulturowe autorów treści medialnych, które dotyczą tematyki spotkania międzykulturowego.
No Need for Dark-Matter, Dark-Energy or Inflation, Once Ordinary Matter Is Properly Represented?
Authors: Knoll Yehonatan
Published: January 2019

In a recent Foundations of Physics paper [5] by the current author it was shown that, when the self-force problem of classical electrodynamics is properly solved, it becomes a plausible ontology underlying the statistical description of quantum mechanics. In the current paper we extend this result, showing that ordinary matter, thus represented, possibly suffices in explaining the outstanding observations currently requiring for this task the contrived notions of dark-matter, dark-energy and inflation. The single mandatory 'fix' to classical electrodynamics, demystifying both very small and very large scale physics, should be contrasted with other adhoc solutions to either problems. Instrumental to our cosmological model is scale covariance (and 'spontaneous breaking' thereof), a formal symmetry of classical electrodynamics treated on equal footing with its Poincare covariance, which is incompatible with the (absolute) metrical attributes of the GR metric tensor.
Microwave Assisted Novel Efficient Pd-free Catalyst for Suzuki C-C Coupling Reaction
Authors: Alzhrani Ghalia , Ahmed Nesreen , Aazam Elham , Mokhtar Mohamed , Saleh Tamer
Published: January 2019

Suzuki cross-coupling reaction has developed one of the furthermost effectual approaches for the synthesis of biaryls or substituted aromatic moieties from aryl halides and arylboronic acids with a palladium-catalyst in the past two era’s. Herein, Pd-free layered double hydroxide containing nickel catalysts were prepared by co-precipitation method under ultrasonic irradiation and N2 atmosphere with different molar ratios of Ni: Mg: Al and coded as (1NiLDHs-Dr), (1.5NiLDHs-Dr) and (2NiLDHs-Dr). A series of reduced catalysts under 5%H2/N2 at different temperatures were coded as 1NiLDHs-R200, 1.5NiLDHs-R200 and 2NiLDHs-R200. As-synthesized 2NiLDHs-Dr was the superlative catalyst when coupling different aryl halides with different boronic acids derivatives. Deep investigation of all catalysts was done using different techniques such as inductively coupled plasma optical emission spectroscopy (ICP-OES), x-ray photoelectron spectroscopy (XPS), powder x-ray diffraction (XRD), thermogravimetric analyses (TGA), Fourier transfer infrared (FTIR), scanning electron microscope (SEM) connected with energy dispersive x-ray (EDX) and N2-physisorption at -196 ℃. The results attained verified that ɑ-Ni(OH)2 was fashioned for 2NiLDHs-Dr catalyst and the enclosure of nickel ions in the cationic sheet of layered structure were responsible for the fascinating catalytic efficacy rather than the basic nature of material. The Ni-containing LDHs catalysts encourage forthcoming studies in Pd-free catalyzed C-C coupling reactions.
RGB Imaging as Tool to Analyze the Growth of Fusarium graminearum in Infected Oats (Avena sativa) and Rice (Oryza sativa)
Authors: Cambaza Edgar , Koseki Shigenobu , Kawamura Shuso
Published: January 2019

Fusarium graminearum is a cereal pathogen responsible for economic losses worldwide every year. An understanding of its growth is key to control its infection, but current growth models are limited because their size-based approach provides little information about the mold's metabolism. Recently, a RGB (red, green and blue) imaging analysis demonstrated the predictability of F. graminearum color change as it grows in yeast extract agar (YEA). This study aimed to verify the same phenomenon in oats (aw = 0.94, 0.97 and 0.99) and rice (aw = 0.97, 0.98 and 0.99). Photos were taken using a professional camera and a smartphone (iPhone 6) after incubation and during the subsequent 16 days, and average RGB was quantified using ImageJ software. The photos showed very similar color variations, regardless of the type of grain or aw. The mold first adopted a k-selection strategy by growing as a mycelium and then a r-selection strategy, increasing spore production. All RGB channels showed positive Pearson correlations between them (p < 0.001) and it was possible to design a model showing two lag phases, the first prior to a mycelial phase and the second prior to a sporular phase at the end of the experiment.
Magnetic Otto Engine for an Electron in a Quantum Dot: Classical and Quantum Approach
Authors: Peña Francisco J. , Negrete Oscar , Alvarado Barrios Gabriel , Zambrano David , González Alejandro , Nuñez Alvaro S. , Orellana Pedro A. , Vargas Patricio
Published: January 2019

We study the performance of a classical and quantum magnetic Otto cycle with a quantum dot as a working substance using the Fock-Darwin model with the inclusion of the Zeeman interaction. Modulating an external/perpendicular magnetic field, we found in the classical approach an oscillating behavior in the total work that is not perceptible under the quantum formulation. Also, we compare the work and efficiency of this system for different regions of the Entropy, $S(T,B)$, diagram where we found that the quantum version of this engine always shows a reduced performance in comparison to his classical counterpart.
Nonoperative Treatment of Medial Ulnar Collateral Ligament Injuries in the Throwing Athlete
Authors: Kadri Omar M. , Okoroha Kelechi R. , Patel Ravi B. , Berguson Jon , Makhni Eric C. , Moutzouros Vasilios
Published: January 2019

* Ulnar collateral ligament (UCL) injuries are common in overhead throwing athletes, particularly baseball players. Appropriate diagnosis, treatment, and rehabilitation are important in order for athletes to return to their preinjury condition.

* Many patients, including the noncompetitive athletes and those with partial ligament tears, benefit from nonoperative treatment. Elite athletes desiring a return to play benefit from UCL reconstruction.

* Rest, anti-inflammatory drugs, focused physical therapy, and biologic adjuncts are options that may allow athletes to return to play while avoiding the morbidity associated with operative treatment.
Percepción del profesorado universitario sobre la integración de las Tecnologías de la Información y la Comunicación (TIC) en las modalidades docentes. Influencia del género y la edad.
Authors: Hernández Ramos Juan Pablo , Torrijos Fincias Patricia
Published: January 2019

Este artículo presenta una investigación cuyo objetivo es el de conocer la percepción que tiene el profesorado de la Universidad de Salamanca sobre la integración de las Tecnologías de la Información y la Comunicación (TIC) en las diferentes modalidades que emplea en su práctica docente (Proyecto de investigación subvencionado por La Junta de Castilla y León, orden EDU/1933/2008). En base a una muestra representativa por rama y categoría profesional de 161 docentes, con una metodología cuantitativa, un método no experimental y descriptivo; se muestra como los profesores emplean y compatibilizan las diferentes modalidades docentes, desarrollando metodologías de trabajo tanto autónomo como colaborativo, donde perciben a las TIC como recursos docentes parcialmente integrados. Así mismo, a pesar de la existencia de estudios previos que constatan que el género del docente y su edad son variables influyentes, los resultados obtenidos en esta investigación muestran que el género del docente y la edad son factores que no influyen significativamente en la integración de las TIC a la docencia.
Análisis comparativo y evaluación de la calidad de los recursos electrónicos para aprender lenguas extranjeras: el caso de Cambridge English y Aveteca
Authors: Hilinger Angelica , Pérez Rodríguez Vanessa
Published: January 2019

Vivimos en un mundo global donde la necesidad de comunicación con personas de cualquier país y lengua es un hecho. El siguiente estudio parte de la necesidad social de conseguir ciudadanos bilingües o multilingües a la mayor brevedad, para lo que es necesario disponer de recursos online de calidad, accesibles a los usuarios. Este trabajo compara las características técnicas y de contenido de dos webs de acceso libre, una dedicada al aprendizaje de inglés y otra al aprendizaje de español como lengua extranjera. Ambas webs son consideradas representativas, dada su importancia y prestigio: Cambridge English (inglés), y Aveteca (Aula Virtual de Español) del Instituto Cervantes. Para la recogida de datos se han utilizado las plantillas diseñada por los investigadores del proyecto LinguApp, que han sido validadas a través del método Delphi por un comité internacional de expertos en educación y en segundas lenguas. Los resultados de nuestro análisis comparativo nos permiten concluir que la conjunción de un buen diseño y de la calidad de las actividades y de los recursos técnicos de la propia página es clave para incitar al aprendizaje de lenguas.
Evaluación técnica de sitios web para el aprendizaje autónomo de inglés como segunda lengua
Authors: Aguayo Arrabal Natividad , Ramírez Delgado Cristina de las Montañas
Published: January 2019

Conscientes de la necesidad imperiosa de ser competente en lenguas extranjeras en nuestros días, y habida cuenta de las directrices europeas en materia de multilingüismo y las exigencias actuales del mercado laboral, en el presente estudio dirigimos nuestra atención al aprendizaje autónomo de idiomas y a los recursos en Internet disponibles para tal fin. Concretamente, nuestro trabajo tiene por objetivo analizar una herramienta didáctica en línea gratuita y de acceso libre para la enseñanza del inglés (ESOL Courses) con el propósito de evaluar su calidad desde un punto de vista técnico, esto es, atendiendo a los criterios de funcionalidad y usabilidad. Este sitio web forma parte de la selección de herramientas realizada para el proyecto de investigación LinguApp en el que participamos activamente como investigadoras, donde detectamos la necesidad de explorar, además del contenido per se, aspectos escasamente estudiados relativos a la funcionalidad y usabilidad como subcaracterísticas de la utilidad de una herramienta (Lu y Yeung, 1998) y que condicionan la experiencia del usuario. Para ello, hemos creado una lista de verificación (checklist) que cubra los elementos esenciales en términos de funcionalidad y usabilidad web en función de la literatura revisada y del análisis previo del proyecto LinguApp. Los resultados obtenidos revelan que las limitaciones o deficiencias técnicas pueden conllevar a la desmotivación del alumno y a la falta de aprovechamiento de la herramienta por no cumplir unos estándares mínimos de calidad.
A formula for the settling velocity of cohesive sediment flocs in water
Authors: Zhu Zhongfan
Published: January 2019

A simple formula is developed to relate the size and settling velocity of cohesive sediment flocs in both the viscous and inertial settling ranges. This formula maintains the same basic structure as the existing formula but is amended to incorporate the fact that the flocculated sediment has an internal fractal architecture and is composed of different-sized primary particles. The input parameters needed for calculating the settling velocity include the median size and size distribution of the primary particles, the fractal dimension of the floc, the density of the sediment, and two calibrated coefficients that incorporate the effects of floc shape, permeability, and flow separation on drag. The proposed formula is compared with four data sets of settling velocity–floc size collected from the published literature, and a good agreement between the model and these data can be found.
Oxidative Stress and Kidney Function: A Brief Update
Authors: Coppolino Giuseppe , Leonardi Giuseppe , Andreucci Michele , Bolignano Davide
Published: January 2019

In this review we summarized some information regarding the link between kidney and oxidative
stress. Accruing evidences indicated the kidney as a fundamental organ in reactive oxygen species (ROS) production.
ROS are highly reactive and cause in single cells: protein alteration, DNA damage, cellular senescence and
apoptosis; while the effect of ROS in biological tissues leads to a harmful oxidation effect on all their biochemical
components: lipids, proteins, carbohydrates, and nucleic acids. Oxidative stress plays a role in the pathophysiology
of renal impairment and is a mediator of CKD progression; furthermore, during substitutive therapy with
haemodialysis or peritoneal dialysis and in case of transplantation, organism continues to be exposed to oxidation
causing the development of major systemic comorbidities in particular cardiovascular diseases.
Nanonetworks in Biomedical Applications
Authors: Marzo Jose Luis , Jornet Josep Miquel , Pierobon Massimiliano
Published: January 2019

By interconnecting nanomachines and forming nanonetworks, the capacities of single nanomachines are expected to be enhanced, as the ensuing information exchange will allow them to cooperate towards a common goal. Nowadays, systems normally use electromagnetic signals to encode, send and receive information, however, in a novel communication paradigm, molecular transceivers, channel models or protocols use molecules. This article presents the current developments in nanomachines along with their future architecture to better understand nanonetwork scenarios in biomedical applications. Furthermore, to highlight the communication needs between nanomachines, two applications for nanonetworks are also presented: i) a new networking paradigm, called the Internet of NanoThings, that allows nanoscale devices to interconnect with existing communication networks, and ii) Molecular Communication, where the propagation of chemical compounds like drug particles, carry out the information exchange.
Chitosan and Its Derivatives - Biomaterials with Diverse Biological Activity for Manifold Applications
Authors: Paul Paulina , Kolesinska Beata , Sujka Witold
Published: January 2019

Derived from chitin, chitosan is a natural polycationic linear polysaccharide being the second most abundant polymer next to cellulose. The main obstacle in the wide use of chitosan is its almost complete lack of solubility in water and alkaline solutions. To break this obstacle, the structure of chitosan is subjected to modification, improving its physic-chemical properties and facilitating application as components of composites or hydrogels. Derivatives of chitosan are biomaterials useful for different purposes because of their lack of toxicity, low allergenicity, biocompatibility and biodegradability. This review presents the methods of chemical modifications of chitosan which allow to obtain tailor- made properties required for a variety of biomedical applications. Selected pharmaceutical and biomedical applications of chitosan derivatives are also highlighted. Possibility to manage waste from arthropod and crab processing is also emphasized.
Zoledronic Acid Inhibits the RhoA-mediated Amoeboid Motility of Prostate Cancer Cells
Authors: Pietrovito Laura , Comito Giuseppina , Parri Matteo , Giannoni Elisa , Chiarugi Paola , Taddei Maria Letizia
Published: January 2019

Background:

The bisphosphonate Zoledronic acid (ZA) is a potent osteoclast inhibitor currently used in the clinic to reduce osteoporosis and cancer-induced osteolysis. Moreover, ZA exerts an anti-tumor effect in several tumors. Despite this evidence, the relevance of ZA in prostate cancer (PCa) is not completely understood.

Objective:

To investigate the effect of ZA administration on the invasive properties of PC3 cells, which are characterised by RhoA-dependent amoeboid motility.

Methods:

The effect of ZA administration on the in vitro invasive properties of PC3 cells was evaluated by cell migration in 3D collagen matrices, immunofluorescence and Boyden assays or transendothelial migration. Lung retention and colonization assays were performed to assess the efficacy of ZA administration in vivo.

Results:

PC3 cells are characterised by RhoA-dependent amoeboid motility. We now report a clear inhibition of in vitro PC3 cell invasion and RhoA activity upon ZA treatment. Moreover, to confirm a specific role of ZA in the inhibition of amoeboid motility of PC3 cells, we demonstrate that ZA interferes only partially with PC3 cells showing a mesenchymal phenotype due to both treatment with conditioned medium of cancer associated fibroblasts or to the acquisition of chemoresistance. Furthermore, we demonstrate that ZA impairs adhesion to endothelial cells and the trans-endothelial cell migration, two essential properties characterising amoeboid motility and PC3 metastatic dissemination. In vivo experiments prove the ability of ZA to inhibit the metastatic process of PC3 cells as shown by the decrease in lung colonization.

Conclusion:

This study demonstrates that ZA inhibits Rho-dependent amoeboid motility of PC3 cells, thus suggesting ZA as a potential therapy to impede the metastatic dissemination of PC3 cells.
Bilateral Interrelationship of Diabetes and Periodontium
Authors: Badiger Apoorva B. , Gowda Triveni M. , Chandra Khyati , Mehta Dhoom S.
Published: January 2019

:

Periodontitis is a chronic inflammatory disease characterised by destruction of the supporting
structures of the teeth which is a common cause of tooth mortality in all individuals throughout the
world. Diabetes is a group of metabolic dysregulation, primarily of carbohydrate metabolism, characterized
by hyperglycemia that results from defects in insulin secretion, impaired insulin action, or both.
Systematic reviews and meta-analysis have shown that the prevalence of periodontitis is increased in
diabetic patients. Based on the evidence, degree of hyperglycemia and severity of periodontitis are inter-
related. Diabetic patients with severe periodontitis have six times more poor glycemic control than
patients with healthy periodontium. However, improved glycemic control has been postulated to reduce
the severity of periodontal disease.

:

In this mini-review, we have presented the previously reviewed studies from the literature and focused
on a two-way relationship of diabetes and periodontitis, various pathways involved in it such as
RANK/RANKL/OPG axis, AGE-RAGE pathway, Oxidative stress mechanism, and obesity that influence
the possibility of periodontitis-Diabetes Mellitus (DM).
Nicotinamide Overcomes Doxorubicin Resistance of Breast Cancer Cells through Deregulating SIRT1/Akt Pathway
Authors: Wei Yingze , Guo Yan , Zhou Jianyun , Dai Kui , Xu Qiang , Jin Xiaoxia
Published: January 2019

Background and Purpose:

Breast cancer is one of the leading causes of cancer deaths in female
worldwide. Doxorubicin represents the most common chemotherapy for breast cancer, whereas side effects and
development of resistance impede its effect on chemotherapy. Nicotinamide (NAM), serves as the sirtuins’
inhibitor, effectively suppressing various types of cancer. However, the effects of NAM on drug resistance of
breast cancer are need to be fully investigated.

Methods:

Breast cancer doxorubicin-resistant cells MCF-7/ADR and doxorubicin-sensitive cells MCF-7 were
applied in this study. Cell proliferation was assessed by CCK8 and colony-forming assays. Cell migration was
evaluated by scratch test and transwell assay while cell apoptosis was measured by TUNEL analysis. Expression
levels of SIRT1, phosphate Akt (P-Akt, Ser-473) and Akt were measured using western blot analysis. The interrelation
between SIRT1 and Akt was investigated by co-immunoprecipitation assay.

Results:

Treatment of nicotinamide combined with doxorubicin effectively inhibited cell growth, suppressed
cell migration, and promoted cell apoptosis of MCF7/ADR cells. Mechanistically, nicotinamide translocated
SIRT1 from the cell nucleus to cytoplasm, dissociated the connection between SIRT1 and Akt, and consequently
decreased expressions of SIRT1, and P-Akt, thereby inhibiting the growth of MCF7/ADR cells.

Conclusion:

Our results suggested that the value of nicotinamide is a potential therapeutic agent for breast
cancer treatment through downregulating SIRT1/Akt pathway, leading to the valid management of breast cancer
patients.