bluuebunny/crossref_metadata_2025 huggingface dataset:
Including a service learning educational research project in a biology course-II: Assessing community awareness of legionnaires' disease?
Authors: Abu-Shakra Amal
Published: March 2016

For a university service learning educational research project addressing Legionnaires’ disease (LD), a Yes/No questionnaire on community awareness of LD was developed and distributed in an urban community in North Carolina, USA. The study showed that the age of the participant was a major factor in enhancing awareness of LD, whereas education was a minor factor at best. Differences in responses among the age groups were strongly significant for general LD awareness, knowledge of its causes and prevalence, as well as body systems affected, prevention and treatment. Interest among the participants in learning more about LD (68%) was higher than in attending a university seminar on the topic (54%). This study provided many educational opportunities to the students to enhance and apply their data analysis skills and to intensify several aspects of their knowledge acquisition and communication skills. Fostering the active involvement of students in an educational activity that can set the stage for an innovative university-community partnership on enhancing awareness of the preventable environmental disease LD is of benefit to all stakeholders.
Improving Science, Technology and Mathematics Students’ Achievement: Imperatives for Teacher Preparation in the Caribbean Colleges and Universities
Authors: J. Babalola
Published: March 2016

The concerns of this article are the unacceptable status of Science, Technology and Mathematics (STM) Education in the Caribbean and how to improve the students’ achievement in the subjects involved through the instrumentality of better preparation of teachers by the Colleges and University faculties training teachers in the region. The index for measuring development among nations of the world is the level of scientific and technological advancement because the factors that influence development are based on human ability to explore, invest and utilize the natural endowments available in the nation. In other words, no nation can attain any reasonable level of development without meeting the vital demands of development particularly in the areas of science, technology and mathematics. Therefore, the article begins with the presentation of the importance and the status of STM education using the mirror of science students’ achievement at global level. Moreover, it is established that the Caribbean education also has some challenges to deal with in the areas of science, technology and mathematics education. The tertiary institutions, particularly the colleges training teachers and the universities are then challenged with suggestions of what they can or should do in teacher preparation that may have direct impact on improving the science students’ achievement in the Caribbean.
PERFIL DE PACIENTES CADASTRADOS NO HIPERDIA: CONHECENDO O ESTILO DE VIDA
Authors: Silva Fernanda Oliveira da , Suto Cleuma Sueli Santos , Costa Laura Emmanuela Lima
Published: March 2016

O objetivo deste artigo é descrever a população atendida pelo HIPERDIA e avaliar o conhecimento dos pacientes sobre diabetes e hipertensão arterial, verificando mudanças no estilo de vida após ingresso no programa. Trata-se de uma pesquisa descritiva e explicativa, com abordagem qualitativa e quantitativa, realizada com 52 pacientes. Obteve-se alta prevalência de idosos e de sujeitos que afirmaram ter conhecimento sobre a patologia e suas complicações; 99% realizavam tratamento medicamentoso. Concluiu-se que, entre as mulheres, o sedentarismo é menor, porém os homens apresentaram modificações significativas nos hábitos alimentares após ingresso no programa, com redução de gordura (77,8%) e sal (18,8); encontrou-se Índice de Massa Corporal e circunferência abdominal acima dos padrões normais e 80% das mulheres com sobrepeso. Recomenda-se, de acordo com os achados, que a equipe de saúde da família realize mais ações de promoção de saúde e de incentivo a pratica de atividade física, assim como melhora nos registros em prontuário.
CATADORES DE LIXO DO CONJUNTO HABITACIONAL FEIRA VI: CONDIÇÕES SOCIOECONÔMICAS E RISCOS À SAÚDE
Authors: Peixoto Marcelo Torres , Oliveira Milena Reis Santos de , Rosa Karine Grilo , Monteiro Dalva de Andrade , Carvalho Rosely Cabral de
Published: March 2016

Os resíduos sólidos são materiais heterogêneos resultantes das atividades humanas e da natureza, os quais podem ser parcialmente reaproveitados. No Brasil, a partir do processo de reciclagem, surge uma nova categoria profissional: os catadores de lixo. O objetivo deste trabalho é descrever o perfil socioeconômico, as condições de moradia e as principais doenças e riscos à saúde a que estão expostos os catadores de lixo que trabalham no Conjunto Habitacional Feira VI, Feira de Santana-BA. Trata-se de um estudo descritivo com dados obtidos através da aplicação de um formulário específico sobre as condições de trabalho, contendo o SRQ-20, e da observação direta dos catadores e sua moradia. Foram entrevistados oito profissionais, sendo seis mulheres. A maioria (7) possuía apenas o ensino fundamental incompleto e os resíduos sólidos eram armazenados nas moradias em sete casos. Metade dos catadores estava doente no dia da entrevista (diarréias, parasitoses e dermatites) e a totalidade das mulheres apresentava algum grau de sofrimento mental. Os indicadores diretos e indiretos construídos a partir deste trabalho subsidiaram a elaboração de um programa de atenção integral às necessidades de saúde dos catadores e reforçam a necessidade de políticas públicas voltadas para a saúde desta categoria profissional.
DESENVOLVIMENTO E VALIDAÇÃO DE UMA ESCALA DIRETA PARA MENSURAÇÃO DE ATITUDES RELATIVAS A DESTINOS TURÍSTICOS
Authors: Santos Glauber Eduardo De Oliveira , Giraldi Janaina De Moura Engracia
Published: March 2016

A mensuração das atitudes é um dos principais desafios para a utilização desse conceito na explicação e na previsão do comportamento dos consumidores e dos turistas. Tal mensuração tem sido usualmente feita por meio de escalas indiretas, através das quais as atitudes são inferidas a partir de uma série de indicadores. Contudo, escalas diretas nas quais os indivíduos julgam suas próprias atitudes por meio de declarações abertamente avaliativas podem ser mais adequadas a determinadas circunstâncias, especialmente quando o objeto em questão é pouco conhecido pelo sujeito. Atualmente, poucas escalas diretas de atitudes estão disponíveis na literatura, formando uma base teórica e empírica frágil para a adoção dessa alternativa. Na tentativa de preencher esta lacuna, o presente estudo visa desenvolver uma escala direta para a mensuração das atitudes dos indivíduos em relação a destinos turísticos de lazer. Isto é feito por meio de um trabalho baseado no procedimento para desenvolvimento de escalas sugerido por DeVellis (2003) e composto por oito etapas distintas. O instrumento desenvolvido foi empiricamente testado junto a uma amostra de estudantes. Os resultados obtidos apontam que as escalas diretas são adequadas para a mensuração das atitudes relativas a destinos turísticos. É evidenciado também que escalas diretas de único item são mais adequadas do que as de múltiplos itens. Palavras-chave: Atitude. Destino turístico. Comportamento do consumidor.
A COOPERAÇÃO ENTRE OS STAKEHOLDERS E O DESENVOLVIMENTO TURÍSTICO DOS TERRITÓRIOS RURAIS – O CASO DA SUB-REGIÃO DO BAIXO ALENTEJO (ALENTEJO - PORTUGAL)
Authors: Amaral Marta Isabel Casteleiro
Published: March 2016

Este artigo, que resultou de uma investigação de Doutorado, tem como objetivo analisar a importância da cooperação entre os stakeholders para o desenvolvimento turístico dos territórios rurais, numa perspectiva de sustentabilidade. A cooperação entre os atores chave do setor turístico 30representa uma mais valia, no sentido de promover os destinos turísticos rurais. Baseando-se numa investigação empírica de caráter quantitativo, procurou-se, com um questionário estruturado, aplicado via e-mail e correio tradicional aos stakeholders do setor público, setor privado e associativo do turismo, avaliar a percepção daqueles agentes, sobre as medidas e as áreas de atuação prioritária em termos de cooperação de modo a contribuir para o desenvolvimento turístico de uma sub-região de Portugal, o Baixo Alentejo, tipicamente rural. Concluiu-se que os agentes consideram importante haver uma cooperação intersetorial, pois: fortalece o turismo, contribuindo para a revitalização econômica e social dos territórios rurais; aumenta a competitividade empresarial; permite as trocas de recursos onde se inclui o capital, o conhecimento; e reforça a legitimidade das políticas de turismo. PALAVRAS-CHAVE: Turismo. Desenvolvimento Sustentável. Cooperação entre Atores.
Locating Chicago’s charter schools: A socio-spatial analysis
Authors: LaFleur Jennifer C.
Published: March 2016

This project contributes to the body of research examining the implications of the geographic location of charter schools for student access, especially in high-poverty communities. Using geographic information systems (GIS) software, this paper uses data from the U.S. Census American Community Survey to identify the socioeconomic characteristics of the census tracts in which Chicago’s charter schools tend to locate. Echoing the findings of other researchers who have examined charter school locational patterns, the present analyses found evidence of a “ceiling effect” by which many charter schools appear to locate in Chicago’s higher-needs census tracts, broadly cast, but avoid locating directly within those that are highest-need. The findings suggest that because Chicago’s charter schools face per-pupil expenditures that are often up to 20% less than those of traditional public schools, they may strategically leverage location to help shape student enrollment. By frequently locating near, but not directly within highest-need communities, charter schools may find it easier to attract a quorum of relatively higher achieving students who are less expensive to educate, therefore increasing their chances of meeting academic benchmarks and retaining their charters. By extending the findings of other researchers to the context of Chicago—where charters represent an ever-increasing share of the public school market—the present analyses may inform future revisions to the policies governing the authorization of charter schools in Chicago, with the goal of increasing access for highest-need students.
A Research on relationship between organizational commitment and self respect of personnel working at domestic security services: Turkish Police Constabulary sample
İç Güvenlik Hizmetlerinde Çalışanların örgütsel bağlılık ile benlik saygısı arasındaki ilişki: Türk Polis Teşkilatı Örneklemi
Authors: Tavas Bekir , Öztürk Cemal
Published: March 2016

In general definition, organizational commitment is an indicator of affiliation level of workers in an organization. Self respect is related with how individuals see themselves. Both organizational commitment and self respect are cognitive properties of individuals. For this reason there may be a relation between organizational commitment and self respect. Thus, relationship between organizational commitment and self respect for domestic security personnel were evaluated in this research.In the research, (n=422) law enforcement agency personnel working at Izmir City police department in 2015 year were subjected to survey including organizational commitment and self respect scales.According to results of the study, harmony factor among organizational commitment factors has significant difference between gender groups (p<0,05), whereas other organizational commitment factors did not showed statistically significant difference based on demographic properties (p>0,05). Correlation analysis results did not indicate a statistically significant relation between organizational commitment and self respect (p>0,05). ÖzetÖrgütsel bağlılık, en genel tanımıyla bir örgüt içerisindeki çalışanların, kendilerini o örgüte ne derece ait hissettiklerinin bir göstergesidir. Benlik saygısı ise bireylerin kendi kişiliklerini nasıl gördükleri ile ilişkilidir. Gerek örgütsel bağlılık, gerekse benlik saygısı bireylerin bilişsel özellikleridir. Bu nedenle benlik saygısı ile örgütsel bağlılık arasında ilişki olabilir. Bundan dolayı bu araştırmada, iç güvenlik hizmetleri personelinin örgütsel bağlılık ile benlik saygısı düzeyleri arasındaki ilişki incelenmiştir. Araştırmada, 2015 yılında İzmir İl Emniyet Müdürlüğü bünyesinde görev yapan (n=422) personel üzerinde algılanan örgütsel bağlılık ve benlik saygısı ölçekleri uygulanmıştır.Araştırma sonuçlarına göre katılımcıların örgütsel bağlılık boyutlarından uyum boyutu cinsiyete göre istatistiksel olarak anlamlı farklılık göstermekteyken (p<0,05), diğer örgütsel bağlılık boyutlarının gruplar arasındaki fark analizi sonuçları istatistiksel olarak anlamlı değildir (p>0,05). Benlik saygısı puanı da yine katılımcıların demografik özelliklerine göre istatistiksel olarak anlamlı bir fark göstermemektedir (p>0,05). Korelasyon analizi sonuçları, benlik saygısı ile örgütsel bağlılık arasında istatistiksel olarak anlamlı bir ilişkiye işaret etmemektedir (p>0,05).
PELAYANAN PASAR HARJODAKSINO DI KAWASAN PERBATASAN KOTA SURAKARTA DAN KABUPATEN SUKOHARJO
Authors: Ulya Himmatul , Wahyono Hadi
Published: March 2016

Kawasan perbatasan merupakan kawasan permeabel yang mudah terpengaruh oleh kewenangan,  kebijakan, dan kepentingan dari dua atau lebih kawasan perbatasan. Dalam hal ini  termasuk  tentang pelayanan sarana publik. Pemanfaatan sarana publik lintas batas dapat terjadi karena berbagai alasan yang melatarbelakanginya. Demikian juga fenomena yang terjadi di Pasar Harjodaksino yang terletak di kawasan perbatasan Kota Surakarta dengan Kabupaten Sukoharjo. Pedagang yang berjualan di Pasar Harjodaksino tidak hanya berasal dari Kota Surakarta saja, tetapi juga dari Kabupaten Sukoharjo, khususnya Kecamatan Grogol. Untuk itu, fenomena tersebut sangat menarik untuk diteliti lebih jauh. Berdasarkan uraian tersebut, dirumuskan pertanyaan penelitian yaitu bagaimana pelayanan Pasar Harjodaksino di kawasan perbatasan kota dan mengapa terjadi pelayanan lintas batas. Untuk itu, penelitian ini bertujuan untuk mendeskripsikan  pelayanan Pasar Harjodaksino yang terletak di kawasan perbatasan tersebut. Untuk mencapai tujuan penelitian, metode yang digunakan adalah pendekatan kualitatif dengan strategi penelitian analisis studi kasus, sedangkan untuk metode pengumpulan data dilakukan dengan observasi lapangan dan wawancara. Selanjutnya informasi tersebut dianalisis dengan menggunakan metode analisis isi (content) dan dilanjutkan dengan analisis tematik. Kesimpulan dari temuan penelitian di atas adalah Pasar Harjodaksino yang dikelola oleh Pemerintah Kota Surakarta merupakan pasar lintas daerah yang melayani Kota Surakarta dan sekitarnya karena didukung oleh sifat pengelolaan yang permisif, sarana prasarana yang memadai, dan akses yang mudah.
PERAN LEMBAGA LOKAL DALAM PENATAAN RUANG DI KELURAHAN NGROTO, KECAMATAN CEPU, KABUPATEN BLORA
Authors: Hidayat Andre Cahya , Manaf Asnawi
Published: March 2016

A development that implements the concept of participation, involves the people in planning process, implementation, and also control the development program. In relation with implementation of participatory on development process, the Indonesian Government actualized it on PLP-BK program. PLP-BK is a spatial management program that implemented in rural or village. This program develops social capital in community level, particularly the established local institutions. Local institutions have an important role in the planning, implementation, control of this program, and also as a community representatives. The importance of local institutions on PLP-BK becomes the background of this research.The goal of research is to examine the role of local institutions in the implementation of PLP-BK at Ngroto Village, Cepu Sub-Regency, Blora Regency, Central Java. The goal is achieved by use a qualitative approach that called case study research. The analysis method are using qualitative description and domain analysis. The result of this research can explain the institutionalization process of spatial management in Ngroto. This process is mixing new values from the outside (i.e.spatial management) with local values in Ngroto through the roles of local institutions. The sustainability roles of local institutions is needed to achieve the result of this process, is called “pranata penataan ruang”. Therefore, the  researcher give a strategy and some actions to achieve the sustainability roles of local institutions in Ngroto, are: capacity building of local empowerment agent, partnership development, and preserve some local institutions. These actions to keep ongoing the institutionalization process in community level, although PLP-BK has ended at October 2012. Thus, community self-reliance can be achieved to realize the goal of spatial management in Ngroto
ANALISIS KESESUAIAN RENCANA PENGEMBANGAN WILAYAH PULAU DOMPAK DENGAN KONDISI EKSISTING BANGUNAN (Studi Kasus: Pulau Dompak, Kota Tanjungpinang, Provinsi Kepulauan Riau)
Authors: Amelia Puteri Rizqi , Mussadun Mussadun
Published: March 2016

Evaluasi merupakan bagian penting dalam sebuah perencanaan. Pulau Dompak menjadi salah satu pulau yang direncanakan sebagai kawasan pusat pemerintahan Provinsi Kepulauan Riau perlu evaluasi rencana mengingat rencana yang dibuat pada tahun 2007 tidak sesuai impelementasinya. Selain itu, rencana detil kawasan yang dibuat ternyata terdapat ketidaksesuaian dengan RTRW Kota Tanjungpinang. Evaluasi ini berguna untuk mengukur sejauh mana perubahan antara dokumen rencana dan kondisi di lapangan yang terjadi di Pulau Dompak. Penelitian ini bertujuan mengidentifikasi perbedaan antara rencana dan kondisi lapangan yang terjadi di Pulau Dompak, Kepulauan Riau. Metode yang digunakan dalam analisis ini adalah kuantitatif dengan teknik analisis deskriptif dan analisis skoring. Secara fisik, masyarakat menilai kesesuaian di Pulau Dompak tergolong sesuai dengan skor 33,80, perencana menilai cukup sesuai dengan skor 28,4, dan pemerintah menilai cukup sesuai dengan skor 28,1. Berdasarkan sosial dan ekonomi, masyarakat menilai kurang sesuai dengan skor 12,98, perencana menilai tidak sesuai dengan skor 10,13, dan pemerintah menilai kurang sesuai dengan skor 11,77. Sesuai aspek kelembagaan, masyarakat menilai sesuai dengan skor 8,24, perencana menilai kurang sesuai dengan skor 6,625, dan pemerintah menilai kurang sesuai dengan skor 6,59. Secara keseluruhan, aspek fisik dinilai cukup sesuai dengan skor 30,1, aspek sosial dan ekonomi dinilai cukup sesuai dengan skor 11,62 dan aspek kelembagaan dinilai cukup sesuai dengan skor 7,151. Namun terdapat beberapa hal yang tidak sesuai antara rencana detail, RTRW dan kondisi eksisting. Terdapat bangunan yang direncanakan dan dibangun di kawasan ruang terbuka hijau, pengembangan ekonomi yang belum terstruktur dan banyaknya peraturan yang tumpang tindih. Berdasarkan ketidaksesuaian ini maka perlu adanya pengaturan pemerintah untuk memberikan ketegasan dalam implementasi rencana di lapangan dan melakukan perbaikan dalam rencana detil yang mengacu pada RTRW.
PENGUJIAN BAHAN BAKAR GAS PADA MESIN SEPEDA MOTOR KARBURATOR DITINJAU DARI ASPEK TORSI DAN DAYA
Authors: Arijanto Arijanto , Saputra Topan Frans
Published: March 2016

Bahan bakar fosil merupakan sumber energi yang sangat penting dalam kehidupan sehari-hari terutama dibidang  transportasi dan merupakan sumber energi tak terbarukan, sedangkan data yang ada didapatkan saat ini kendaraan yang beredar di Indonesia mencapai 80 juta unit dimana 85 persen jumlah tersebut merupakan sepeda motor dengan mayoritas menggunakan mesin karburator. Penelitian ini bertujuan untuk menguji bahan bakar bakar alternatif pengganti bahan bakar minyak yaitu bahan bakar gas. Pengujian dilakukan di laboratorium Fenomena Teknik Mesin Undip, menggunakan mesin Honda Supra. Dengan mengukur torsi pengereman dan komposisi gas buang menggunakan Fluid disk brake serta gas Analizer diperoleh hasil yang cukup memadai.  Setelah dilakukan pengujian didapatkan bahwa torsi terbaik yang dihasilkan bahan bakar gas lpg yaitu 4,77 N.m dan blue gas 4,69 N.m pada putaran 5000 rpm. Untuk laju konsumsi bahan bakarnya pertamax lebih irit dibanding bahan bakar gas pada setiap putaran rpm ujinya. Sedangkan untuk efisiensi pada bahan bakar gas lpg tercapai 51,61 %, dan blue gas 51,46 %, serta pertamax 44,02 % pada putaran 5000 rpm
DETEKSI KERUSAKAN RODA GIGI DENGAN ANALISIS SINYAL GETARAN
Authors: Widodo Achmad , Satrijo Djoeli , Prahasto Toni
Published: March 2016

Roda gigi adalah salah satu komponen mesin yang banyak digunakan dalam sistem transmisi daya. Roda gigi meneruskan daya dari motor melalui mekanisme kontak antar gigi-gigi pada gear dengan gigi-gigi pada pinion. Dengan mekanisme ini, diharapkan tidak terjadi slip selama proses transmisi daya berlangsung. Akibat adanya beban kontak dan kondisi operasi, kerusakan roda gigi dapat terjadi baik kerusakan permukaan seperti pitting, scoring maupun gigi patah. Kerusakan tersebut berpengaruh terhadap kinerja roda gigi, timbulnya noise dan getaran yang berlebih. Oleh karena itu, deteksi dini dari kerusakan roda gigi diperlukan karena dapat mengurangi kerugian terjadinya kerusakan yang bersifat katastropik. Penelitian ini bertujuan untuk menganalisis karakteristik sinyal getaran domain waktu dan frekuensi roda gigi pada kondisi normal, aus dan patah. Metode penelitian ini dilakukan dengan menggunakan test rig roda gigi lurus dengan rasio 1:2. Data akuisisi sinyal getaran dilakukan pada putaran 1000 rpm. Analisis sinyal getaran dilakukan dengan time synchronous averaging (TSA), wavelet transform dan cepstrum.  Hasil analisis menunjukkan bahwa metode TSA dan wavelet mampu mendeteksi kerusakan roda gigi serta mampu menentukan lokasi relatif dari cacat roda gigi berdasarkan sudut putar. Metode cepstrum mampu mendetekasi frekuensi kerusakan roda gigi tetapi tidak bisa menentukan lokasi relatif cacat roda gigi berdasar sudut putar.
PENGAMATAN STRUKTUR MIKRO DAN KEKERASAN PADA RODA GIGI PASCA PENGERASAN PERMUKAAN MENGGUNAKAN PEMANAS INDUKSI
Authors: Ismail Rifky , Aprilitama Nizar Rahman , Sugiyanto Sugiyanto
Published: March 2016

Pemanasan induksi merupakan proses pemanasan benda kerja menggunakan metode induksi elektromagnetik. Arus eddy yang dihasilkan dalam  logam menyebabkan pemanasan pada logam. Pemanas induksi dapat digunakan dalam berbagai fungsi, antara lain pengerasan permukaan, peleburan logam, pengelasan, dan pemanasan pada temperatur yang diinginkan. Pada industri otomotif, dibutuhkan pengerasan pada permukaan beberapa komponen seperti roda gigi, katup dan cranksaft dengan tetap menjaga keuletan di bagian dalam komponen tersebut. Objek pada penelitian ini adalah roda gigi transmisi yang membutuhkan tahan aus dann sifat keras pada permukaan serta tangguh dan ulet di bagian dalam. Proses pengerasan permukaan dilakukan menggunakan alat pemanas induksi. Material yang digunakan adalah baja AISI 4140 dan baja ST60 yang banyak digunakan sebagai bahan baku dalam industri alat transportasi. Spesimen berbentuk gear ditempatkan di tengah koil induksi dan dipanaskan sampai suhu austenit kemudian dicelupkan ke dalam minyak pendingin dengan cepat. Percobaan terhadap 12 spesimen dibedakan oleh variasi modul roda gigi induksi, serta temperatur dan waktu penahanan. Spesimen dianalisis dengan uji komposisi kimia, uji kekerasan makro dan uji mikrografi. Hasilnya adalah peningkatan nilai kekerasan permukaan dan ketebalan pengerasan permukaan. Semakin rendah frekuensi induksi maka pengerasan yang terjadi semakin tebal dan struktur martensit semakin dominan. Alat pemanas induksi terbukti mampu meningkatkan nilai kekerasan permukaan spesimen sebesar 65 - 75 HRC dengan ketebalan 3-4 mm sesuai yang distandarkan oleh ASTM
Complete Classification of the Positive Solutions of Heat Equation with Super Critical Absorption
Authors: Gkikas Konstantinos T. , Véron Laurent
Published: March 2016

Let . We prove that any positive solution of (E) ∂tu − Δu + uq = 0 in ℝN × (0, ∞) admits an initial trace which is a nonnegative Borel measure, outer regular with respect to the fine topology associated to the Bessel capacity in ℝN (qʹ = q/(q − 1)) and absolutely continuous with respect to this capacity. If ν is a nonnegative Borel measure in ℝN with the above properties we construct a positive solution u of (E) with initial trace ν and we prove that this solution is the unique σ-moderate solution of (E) with such an initial trace. Finally we prove that every positive solution of (E) is σ-moderate.
Optimal Mass Transport in Thin Domains
Authors: Navarro-Climent José C. , Rossi Julio D. , Volpe Raúl C.
Published: March 2016

We find the behavior of the solution of the optimal transport problem for the Euclidean distance (and its approximation by p−Laplacian problems) when the involved measures are supported in a domain that is contracted in one direction.
Non-hyperbolic Closed Characteristics on Symmetric Compact Convex Hypersurfaces in R2n
Authors: Liu Hui , Long Yiming , Wang Wei
Published: March 2016

In this paper, let Σ ⊂ R2n be a symmetric compact convex hypersurface. We prove that either there are infinitely many closed characteristics or there exist at least 2[n/2] nonhyperbolic closed characteristics on Σ. Due to the example of weakly non-resonant ellipsoids, this estimate is sharp when n is even. Moreover, we prove that if Σ carries exactly n closed characteristics, then at least n − 2 of them possess irrational mean indices.
Three Weak Solutions for Nonlocal Fractional Equations
Authors: Bisci Giovanni Molica , Pansera Bruno Antonio
Published: March 2016

This article concerns a class of nonlocal fractional Laplacian problems depending of three real parameters. More precisely, by using an appropriate analytical context on fractional Sobolev spaces due to Servadei and Valdinoci (in order to correctly encode the Dirichlet boundary datum in the variational formulation of our problem) we establish the existence of three weak solutions for fractional equations via a recent abstract critical point result for differentiable and parametric functionals recently proved by Ricceri.
Global Smooth Solutions for the Zakharov System with Quantum Effects in Two Space Dimensions
Authors: Gan Zaihui , Zhong Ting , Guo Boling
Published: March 2016

We consider the Zakharov system with quantum effects in the framework of the scalar mode in two space dimensions

iEt + ΔE = nE + ΓΔ2E,

nt = −∇ · V, (ZSQ)

Vt = −∇n − ∇|E|2 + Γ∇Δn,

which is related to quantum corrections to the Zakharov system for Langmuir waves in plasma. We prove the existence and uniqueness of global smooth solutions to the Cauchy problem for (ZSQ) in the Sobolev space through making a priori integral esimates and utilizing the so-called continuity method.
A Harnack-Type Inequality for a Prescribed-Curvature Equation on a Domain with Boundary
Authors: Gluck Mathew R. , Guo Ying , Zhang Lei
Published: March 2016

In this paper the method of moving spheres is used to derive a Harnack-type inequality for positive solutions of

where n ≥ 4, ℝ+
n is the upper half of Euclidean space and B1
+ is the upper half unit ball. Under suitable assumptions on K(x) and c(x), we show that there is a positive constant C such that for all positive solutions u, a Harnack-type inequality holds. As a consequence of this inequality we obtain the following energy estimate

.
Qualitative Properties of Anisotropic Elliptic Schrödinger Equations
Authors: Afrouzi Ghasem A. , Mirzapour M. , Rdulescu Vicenţiu D.
Published: March 2016

We consider a class of nonlinear stationary Schrödinger-type equations and we are concerned with sufficient properties that guarantee the existence of multiple solutions in a suitable Sobolev space with variable exponents. We first establish that in the case of small perturbations, the problem admits at least two weak solutions. Next, in the case of convexconcave nonlinearities, we obtain conditions for the existence of infinitely many solutions with high (resp., small) energies. The arguments combine variational techniques with a careful analysis of the energy levels.
Nonuniform Hyperbolicity and Admissibility
Authors: Barreira Luis , Valls Claudia , Dragičevič Davor
Published: March 2016

For a nonautonomous dynamics defined by a sequence of linear operators, we consider the notion of an exponential dichotomy with respect to a sequence of norms and we characterize it completely in terms of the admissibility in pairs of spaces (ℓp, ℓq), with p and q not necessarily equal. This includes the notion of a nonuniform exponential dichotomy as a very special case. Moreover, we consider a general noninvertible dynamics and a strong nonuniform exponential behavior. The latter is the typical situation from the point of view of smooth ergodic theory.
A Correction and an Extension of Stampacchia’s Work on the Geometric BVP
Authors: Vidossich Giovanni
Published: March 2016

G. Stampacchia introduced the geometric boundary value problem for ODEs in his doctoral thesis and published four papers related to it. Here we point out that the proof of his last theorem on the subject is incorrect and we provide a substitute for it as well as a generalizations of some of his earlier results.
Variational Methods on Finite Dimensional Banach Spaces and Discrete Problems
Authors: Bonanno Gabriele , Candito Pasquale , D’Aguí Giuseppina
Published: March 2016

In this paper, existence and multiplicity results for a class of second-order difference equations are established. In particular, the existence of at least one positive solution without requiring any asymptotic condition at infinity on the nonlinear term is presented and the existence of two positive solutions under a superlinear growth at infinity of the nonlinear term is pointed out. The approach is based on variational methods and, in particular, on a local minimum theorem and its variants. It is worth noticing that, in this paper, some classical results of variational methods are opportunely rewritten by exploiting fully the finite dimensional framework in order to obtain novel results for discrete problems.
An Elliptic Equation Involving Exponential Critical Growth in ℝ2
Authors: Albuquerque Francisco S. B. , Medeiros Everaldo S.
Published: March 2016

We study the following class of nonhomogeneous Schrödinger equations

−Δu + V(|x|)u = Q(|x|) f(u) + h(x) in ℝ2,

where V and Q are unbounded or decaying radial potentials, the nonlinearity f (s) has exponential critical growth and the nonhomogeneous term h belongs to the dual of an appropriate functional space. By combining minimax methods and a version of the Trudinger-Moser inequality, we establish the existence and multiplicity of weak solutions for this class of equations.
Resonant-Superlinear Elliptic Problems Using Variational Methods
Authors: Silva Edcarlos Domingos da , Ribeiro Bruno
Published: March 2016

In this work we establish existence and multiplicity of solutions for resonant-superlinear elliptic problems using appropriate variational methods. The nonlinearity is resonant at −∞ and superlinear at +∞ and the resonance phenomena occurs precisely in the first eigenvalue of the corresponding linear problem. Our main theorems are stated without the well known Ambrosetti-Rabinowitz condition.
Positive and Nodal Solutions of Nonlinear Schrödinger Equations in a Saturable Medium
Authors: Maia Liliane A. , Ruviaro Ricardo
Published: March 2016

We consider the nonlinear Schrödinger equation −Δu + V(x)u = f (x, u), x ∈ ℝN, where V is invariant under an orthogonal involution and converges to a positive constant as |x| → +∞ and the nonlinearity f is asymptotically linear at infinity. Existence of a positive solution, as well as some results on the existence of a class of sign-changing solutions is presented. The new idea is to use the projection on the Pohozaev manifold associated with the problem at infinity in order to show that a min-max energy level is in the appropriate range for compactness.
New Asymptotic Stability and Uniqueness Results on Periodic Solutions of Second Order Differential Equations Using Degree Theory
Authors: Zamora Manuel
Published: March 2016

We present new criteria for uniqueness and asymptotic stability of periodic solutions of a second order differential equation based on topological degree theory. As an application, we will study some well known equations and some illustrative examples.
Dynamics of a Class of Advective-diffusive Equations in Ecology
Authors: Aleja D. , López-Gómez J.
Published: March 2016

In this paper we characterize the dynamics of a generalized version of the model of Belgacem and Cosner [5] within the range of values of the parameters where the trivial steady state is unstable and the problem cannot admit a positive steady state. In such regimes, the dynamics is governed by the metasolutions.
Symmetry of Entire Solutions to the Allen-Cahn Equation
Authors: Gui Changfeng , Zhang Fang
Published: March 2016

In this paper, we shall prove even symmetry of monotone entire solutions to the balanced Allen-Cahn equation with one spatial variable. Related results for the unbalanced Allen- Cahn equation are also discussed.
On Von Kármán Equations and the Buckling of a Thin Circular Elastic Plate
Authors: Janczewska Joanna , Zgorzelska Anita
Published: March 2016

We shall be concerned with the buckling of a thin circular elastic plate simply supported along a boundary, subjected to a radial compressive load uniformly distributed along its boundary. One of the main engineering concerns is to reduce deformations of plate structures. It is well known that von Kármán equations provide an established model that describes nonlinear deformations of elastic plates. Our approach to study plate deformations is based on bifurcation theory. We will find critical values of the compressive load parameter by reducing von Kármán equations to an operator equation in Hölder spaces with a nonlinear Fredholm map of index zero. We will prove a sufficient condition for bifurcation by the use of a gradient version of the Crandall-Rabinowitz theorem due to A.Yu. Borisovich and basic notions of representation theory. Moreover, applying the key function method by Yu.I. Sapronov we will investigate the shape of bifurcation branches.
Ground States for Nonlinear Schrödinger Equations with a Sign-changing Potential Well
Authors: Wang Zhi-Qiang , Xia Jiankang
Published: March 2016

In this paper, we consider the ground state solutions for a class of nonlinear Schrödinger equations

where 2 < p < 2*. We investigate the case λ > inf σ (−Δ + V), i.e., an indefinite problem.

We characterize the ground states as minimizers of the variational functional on a modified Nehari manifold.
Semilinear Elliptic Equation with Biharmonic Operator and Multiple Critical Nonlinearities
Authors: Bhakta Mousomi
Published: March 2016

We study the existence and non-existence of nontrivial weak solution of

,

where N ≥ 5, and . Using Pohozaev type of identity, we prove the non-existence result when 1 < q < 2**. On the other hand when the equation has multiple critical nonlinearities i.e. q = 2** and −(N − 2)2 ≤ μ < μ1, we establish the existence of nontrivial solution, using the Mountain-Pass theorem by Ambrosetti and Rabinowitz.
Liouvillian First Integrals for Generalized Riccati Polynomial Differential Systems
Authors: Llibre Jaume , Valls Claudia
Published: March 2016

We study the existence and non-existence of Liouvillian first integrals for the generalized Riccati polynomial differential systems of the form xʹ = y, yʹ = a(x)y2 +b(x)y+c(x), where a(x), b(x) and c(x) are polynomials.
Infinitely Many Sign-changing Solutions for Quasilinear Elliptic Systems in ℝN
Authors: Zhang Wei , Liu Xiangqing
Published: March 2016

In this paper, by using a perturbation method together with the method of invariant sets of descending flow, we obtain the existence of infinitely many sign-changing solutions of quasilinear elliptic systems in ℝN.
Zur Schärfung des Bibliotheksprofils durch Vermittlung von Informationskompetenz an Lehrende: Ein Praxisbericht
Authors: Wollschläger-Tigges Martin , Simpson Anna Lea
Published: March 2016

Lehrende der FH Bielefeld identifizieren die Bibliothek der Hochschule z. T. in einem klassischen Verständnis mit Büchern und Einführungsveranstaltungen. Damit zeigen sie ein ungenaues Bild von den vielfältigen Dienstleistungen und Services der Bibliothek. Um dieses ungenaue Verständnis zu verbessern, sollen die Dienstleistungen und Services der Hochschulbibliothek besser kommuniziert werden. Ein hierzu entwickelter Workshop zum Erwerb von bzw. zur Weiterentwicklung der persönlichen Informationskompetenz (IK) für Lehrende soll zu einer Schärfung des Bibliotheksprofils führen. Die Anknüpfungspunkte und v. a. die Entwicklung, Umsetzung und Weiterentwicklung dieses Ansatzes zeichnet dieser Praxisbericht nach. Es zeigt sich, dass das Konzept inhaltlich und auch methodisch auf Interesse stößt; sich aber Entwicklungspotentiale v. a. in einer Sequenzierung einzelner IK-Inhalte, einer dezentralen Veranstaltungsform sowie in einer direkten Initiierung von Workshops durch die Bibliothek ergeben. Mit dem vorgestellten Ansatz sind Bibliotheken in der Lage, ihr Image bei einer spezifischen Zielgruppe zu korrigieren, indem über sachliche Inhalte sowohl ein Nutzen für Lehrende als auch für die Bibliothek geschaffen wird.
Economic Development and the Direction of FDI Flows
Authors: Gomtsyan David
Published: March 2016

Evidence suggests that advanced economies make and attract relatively more FDI as a share of GDP than developing countries. Comparing the composition of international liabilities across countries the paper argues that higher risks and regulatory barriers in developing countries are the primary reasons behind the relatively lower levels of FDI liabilities to GDP in developing countries. The paper uses a model with heterogeneous multinational firms to explain this empirical observations. In the model developed countries make relatively more FDI because the average productivity of firms in these countries is higher, thus there are relatively more firms with sufficiently high productivity levels, that can profitably enter into foreign markets.
Uniaxial Properties versus Temperature, Creep and Impact Energy of an Austenitic Steel
Authors: Brnic Josip , Turkalj Goran , Krscanski Sanjin , Vukelic Goran , Canadija Marko
Published: March 2016

In this paper, uniaxial material properties, creep resistance and impact energy of the austenitic heat-resistant steel (1.4841) are experimentally determined and analysed. Engineering stress–strain diagrams and uniaxial short-time creep curves are examined with computer-controlled testing machine. Impact energy has been determined and fracture toughness assessed. Investigated data are shown in the form of curves related to ultimate tensile strength, yield strength, modulus of elasticity and creep resistance. All of these experimentally obtained results are analysed and may be used in the design process of the structure where considered material is intended to be applied. Based on these results, considered material may be classified as material of high tensile strength (688 MPa/293 K; 326 MPa/923 K) and high yield strength (498 MPa/293 K; 283 MPa/923 K) as well as satisfactory creep resistance (temperature/stress

→

$ \to $

strain (%) at 1,200 min: 823 K/167 MPa

→

$ \to $

0.25 %; 923 K/85 MPa

→

$ \to $

0.2 %).
Simulation of the Selective Hydrogenation of C3-Cut in the Liquid Phase
Authors: Mary Gaetan , Esmaeili Amin , Chaouki Jamal
Published: March 2016

In this work, the selective hydrogenation of C3-cut in the liquid phase has been investigated. A realistic model has been developed to simulate the selective transformation of methylacetylene (MA) and propadiene (PD) into propylene in an industrial-scale reactor. The reaction rates have been determined for the gas phase hydrogenation process and adapted for the liquid phase by considering several changes including the catalyst activity and the concentration of reactive components. In the last part of this work, a three-phase hydrodynamic model was developed and the kinetic and hydrodynamic models were then combined in order to achieve the global reactor model. In addition, the results obtained from the model were compared to those from an industrial reactor. It was found that there is a good agreement between the simulation predictions and the output of the real industrial reactor.
Examining the usefulness to learners of processes taught in L2 English listening courses
Authors: Yeldham Michael
Published: March 2016

Scholars have recommended various listening processes to help develop second language listeners’ abilities, processes that have been largely included in current listening course materials. However, there has been little research examining the usefulness of these various processes for the listeners, and therefore knowledge is lacking into which of these processes may be worth foregrounding in such courses and why. This study provides initial insights into these areas. Lower-intermediate level learners are taught in two listening courses, and then provide accounts of which strategies and skills benefitted them the most (and also the least, in some instances), and also reasons why. Learners’ views are supported by their accompanying growth in listening proficiency, and where possible, in the relevant strategy or skill they are evaluating. The study also provides information regarding the possible sequencing of some processes in a listening course.
Glucose absorption in the intestine of albino rats
Authors: Oluwasogo Olalubi A. , Victor Owoyele B. , Tayo Ayinla M. , Kehinde Akintunde J.
Published: March 2016

Background: The ability to absorb substances from the external environment is one of the features that make animals different from inanimate objects. In mammalian species, this quality is mainly the role of the small intestine. The process of absorption mainly takes place in the small intestine. This study was carried out to investigate the rate of glucose absorption in the intestine of albino rats and the effect of calcium and ouabain on the rate of glucose absorption.

Methods: Albino rats weighing between 200 and 250 g were used for this experiment. Guts were isolated and cut to segments. Test solution was injected into each of the isolated segments, which were then assayed for glucose.

Results: The result revealed that the rate of glucose absorption in the intestine of albino rats were found to be 3.02×10−1 g/min at the mucosa-to-serosa surface and 3.00×10−1 g/min at the serosa-to-mucosa surface, indicating that glucose was absorbed at both surfaces and that the rate of glucose absorption was higher in the mucosa-to-serosa direction than in the opposite direction. The rate of intestinal glucose absorption at different regions of the intestine and the effect of varying concentrations of calcium on the rate of glucose absorption revealed that glucose absorption was highest at the duodenum and lowest at the ileum.

Conclusions: Ouabain blocked the rate of absorption of glucose in the intestine of albino rats.
Identification of a dominant vocabulary in ELF interactions
Authors: Gilner Leah
Published: March 2016

This paper reports on several studies whose common theme is the elicitation of the lexical preferences of speakers of English in localized and globalized settings. Findings from analyses of various corpora show that there exists a relatively small set of preferred words that speakers of English rely on regardless of where the interaction takes place, with whom they are interacting, and what the purpose of the interaction is. Results also show that these lexical preferences are consistently prevalent to the extent that it is possible to advance the hypothesis that a relatively stable dominant vocabulary dynamically emerges out of ELF speaker interactions in order to serve certain communicative functions.
A case of mature teratoma with a falsely high serum estradiol value measured with an immunoassay
Authors: Hosokawa Mayumi , Shibata Hironori , Ishii Tomohiro , Fujino Akihiro , Kuroda Tatsuo , Kosaki Kenjiro , Kameyama Kaori , Hasegawa Tomonobu
Published: March 2016

Immunoassays (IAs) are widely used to measure concentration of serum estradiol (E2) despite some limitations including cross-reactivity. Liquid chromatography-tandem mass spectrometory (LC-MS/MS) for E2 measurement has a theoretically greater specificity and sensitivity than IAs. We report a case with unexpected discrepancy in E2 values measured by IA and LC-MS/MS.

A 7-year-old girl was referred because of an ovarian tumor. Physical examinations revealed prepubertal statuses. Serum E2 with ECLIA was 69 pg/mL. GnRH stimulation test revealed a prepubertal response. On imaging studies, the diagnosis was mature teratoma of the right ovary. After tumor enucleation, the diagnosis was pathologically confirmed. E2 with ECLIA decreased to 11 pg/mL. Preoperative E2 with LC-MS/MS was 1.15 pg/mL.

We conclude the preoperative E2 with ECLIA was falsely high. We speculate the antibody used in ECLIA had cross-reactivity to endogenous compounds. LC-MS/MS should be considered when high serum E2 measured with IA is inconsistent with physical and/or endocrinological data.
Solving Problems Associated with the Brain Drain: Fair Contracts, Legitimate States, and Appropriate Policy Measures
Authors: Brock Gillian
Published: March 2016

Several commentators focus substantial criticism on my proposals that require skilled citizens in poor developing states to assist those countries for short periods or with additional taxation measures. In particular, they are skeptical about any so-called fair contracts between governments and students that can defensibly bind students to perform service and pay taxes. They worry that the conditions and terms of these contracts cannot make for morally binding agreements. In Section 1 I review some key points from my overall argument strategy, indicating why the mechanism of fair contracts is a good focal point within the context of the debate. In Section 2 I consider and respond to several of the criticisms that aim to undermine the idea that students can enter into fair contracts that cover compulsory service and taxation programs. In Section 3, I consider prospects and pitfalls concerning extending some core lines of argument, mainly in response to Lea Ypi’s creative ideas.
Originating souls and original sin: An Initial Exploration of Dualism, Anthropology, and Sins Transmission
Authors: Farris Joshua
Published: March 2016

The doctrine of Original Sin is a subject of perennial theological fascination. Comparatively little attention has been paid, however, to the doctrine of original sin and discussions about the origin of the soul. In this article, I argue that of the various models of the soul’s origin on offer, it is something akin to what I call emergent-creationism that naturally provides the most explanatory metaphysical resources for making sense of the transmission of original sin.
Comparisons of Two Non-probabilistic Structural Reliability Analysis Methods for Aero-engine Turbine Disk
Authors: Liu Zheng , Yu Le , Li Yan-Feng , Mi Jinhua , Huang Hong-Zhong
Published: March 2016

Turbine disk is a key component of aero-engine and the failure of turbine disk will lead to disastrous consequences, making the structural reliability analysis for the turbine disk as an urgent issue. Taking the turbine disk as the case study, this paper will compare two non-probabilistic structural reliability analysis methods of imprecise structural reliability analysis and interval structural reliability analysis aiming at providing a more profound understanding about the theoretical system of imprecise probability theory. Moreover, according to the comparisons, this paper will predict the prospects or the works should to be done for the widely application of imprecise probability theory.