bluuebunny/crossref_metadata_2025 huggingface dataset:
Advances in Hollow Core Fiber for the 1μm and Visible Wavelength Regions
Authors: Sakr H. , Chen Y. , Bradley T. D. , Jasion G. T. , Hayes J. R. , Davidson I. A. , Fokoua E. Numkam , Wheeler N. V. , Richardson D. J. , Poletti F.
Published: October 2020

We report advances in Nested Antiresonant Nodeless hollow-core Fiber (NANF) operating in the visible and 1µm wavelength regions achieving record low optical losses of 2.8dB/km and 1.23dB/km at 650nm and 1070nm, respectively at these wavelengths.
Noble and Raman-active Gas-Filled Hollow-Core Fiber Lasers
Authors: Adamu Abubakar I. , Wang Yazhou , Amezcua-Correa Rodrigo , Bang Ole , Markos Christos
Published: October 2020

We present the generation of mid-IR light in anti-resonant hollow-core fiber using Raman-active gas for 4.2µm laser and Raman-inactive gas for multi-octave SC spanning from 200 nm to 4µm.
Chalcogenide Optical Fiber Components
Authors: Rochette Martin
Published: October 2020

This talk features recent achievements of the Nonlinear Photonics Group at McGill University towards the fabrication of chalcogenide-based optical fiber components such as nonlinear gain fibers, optical fiber couplers, filters, and saturable absorbers.
Vector modes generation using efficient on-axis system
Authors: García-Martínez Pascuala , Marco David , Martínez-Fuentes José Luis , Sánchez-López María del Mar , Moreno Ignacio
Published: October 2020

Arbitrary polarized vector beam modes are efficiently generated. We use two flicker-free liquid-crystal on silicon (LCOS) spatial light modulators (SLM) in an on-axis common path architecture. Different superpositions of vector modes are obtained with high light efficiency.
Circuit architecture and integration feasibility of a high-resolution broadband on-chip spectral sensor
Authors: Hasan Mehedi , Rad Mohammad , Hasan Gazi Mahamud , Ghorbani Houman , Liu Peng , dumais Patric , Bernier Eric , Hall Trevor
Published: October 2020

On-chip spectral monitoring of dense multi-carrier superchannels in flex grid architectures across the entire C-band is challenging. A compact architecture, integration feasibility and simulation verification targeting high resolution is presented.
Silicon Photonic Modulators for Space Applications
Authors: Najeeb Najla , Ménard Michaël
Published: October 2020

We investigate the impact of large temperature fluctuations on the performance of unbalanced and balanced Mach-Zehnder silicon photonic modulators and explore the trade-offs between the extinction ratio and thermal resilience.
InP-based Transceivers for Generation and Transmission of 800 Gbit/s Signals
Authors: Wolf S. , Going R. , Porto S. , Maher R. , Xu X. , Studenkov P. , Lal V. , Tsai H.-S. , Corzine S. , Zhang J. , Behnia B. , Hoshino K. , Di Giovanni C. , Chitgarha M.R. , Olmedo M.I. , Diniz J. , Kerns S. , Samra P. , Vallaitis T. , Yan J. , Osenbach J. , Kuntz M. , Frost T. , Pavinski D. , Buggaveeti S. , Hodaei H. , Wang Z. , Evans P. , Sanders S. , Ziari M.
Published: October 2020

We present our recent progress in coherent transmitters (Tx) and receivers (Rx) based on Photonic Integrated Circuits (PIC) on the InP platform. We demonstrate signal generation and transmission at 800 Gbit/s per optical channel.
Single-LED VLC-Transmission with AMI and RZ-OOK for Dimming Support at Fixed Data Rate
Authors: Krohn Adrian , Hoeher Peter A. , Pachnicke Stephan
Published: October 2020

We present a method for VLC data transmission using a single LED and a driver with dimming support. AMI and RZ-OOK coding are applied as modulation schemes and experimental measurements in a testbed were performed.
Low Complexity MIMO Detection for CDL Mitigation in Multi-Core Fiber Transmission
Authors: Abouseif Akram , Othman Ghaya Rekaya-Ben , Jaouën Yves
Published: October 2020

MIMO decoding for multi-core fibers c ould i nduce v ery h igh processing complexity. In this paper, we propose a low complexity coding and decoding scheme allowing to mitigate completely the CDL effect.
Transmitter frequency-dependent IQ imbalance characterization and pre-emphasis
Authors: Skvortcov Pavel , Phillips Ian , Forysiak Wladek
Published: October 2020

The detrimental effect of frequency-dependent IQ imbalance is analyzed via numerical simulations. A MIMO pre-emphasis based on pre-trained adaptive filters is proposed to compensate for the joint impact of cross-talk, skew and frequency response mismatch.
Inter-Channel Interference Estimation based on IQHistograms including Machine Learning
Authors: Pérez Alejandro Escobar , González Neil Guerrero , Granada Torres Jhon J.
Published: October 2020

We propose a method for inter-channel interference estimation based on the k-Nearest Neighbors algorithm applied to histograms of I-Q components of received symbols. We experimentally validated its performance in a 3 × 16 Gbaud 16-QAM Nyquist-WDM system.
A Fully Connected Neural Network to Mitigate 200G DP-16-QAM Transmission System Impairments
Authors: Catanese Clara , Ayassi Reda , Pincemin Erwan , Jaouën Yves
Published: October 2020

We show here the efficiency of neural network to assist the linear DSP for mitigating 200G DP-16QAM transmission system impairments. We measure up to 1-dB Q-factor improvement in our Nx100-km G.652 fiber link experiment.
Pre-compensation for Attenuation-induced Distortions in NFT-based Optical Fiber Communication with EDFA
Authors: Shahriar Kh Arif , Alam Md Samiul , Morsy-Osman Mohamed , Plant David V.
Published: October 2020

For nonlinear Fourier transform based communication over periodically amplified optical fiber links, we demonstrate a pre-compensation technique to minimize attenuation-induced distortions and thus significantly improve system performance.
Investigation of CCDM Implementation in Long-haul Subcarrier-multiplexing Transmissions
Authors: Fu Mengfan , Lun Huazhi , Liu Qiaoya , Liu Xiaomin , Cai Meng , Yi Lilin , Hu Weisheng , Zhuge Qunbi
Published: October 2020

We investigate the CCDM performance in subcarrier-multiplexing systems and show the reduced nonlinear tolerance with conventional CCDM implementation. A dimension-interleaved (DI) CCDM scheme is evaluated for fiber nonlinearity mitigation.
Impact of Cascaded Signal and Noise Responses on the Performance of a DP-QPSK System with Optical Filtering
Authors: Cartledge J. C. , Laperle C. , Charlton D. , O’Sullivan M.
Published: October 2020

The implications of cascaded optical filters on the real-time performance of a 140 Gb/s DP-QPSK transceiver are investigated by emulating passband variations through cascaded responses for both the signal and noise, and bandwidth narrowing.
Performance and Complexity Analysis of Blind Timing Phase Error Detectors in Pluggable Coherent Receivers
Authors: Alam Md Samiul , Abdo Ahmad , Li Xueyang , Aouini Sadok , Parvizi Mahdi , Ben-Hamida Naim , Plant David V.
Published: October 2020

The computational complexity and performance of various blind timing phase estimators in coherent optical system with small roll-off-factor is analyzed. The Monte-Carlo simulation results are discussed.
On Computational Complexities of KK Algorithms with Frequency-domain Digital Resampling
Authors: Xing Zhenping , Li Xueyang , Mousa-Pasandi Mohammad E. , O’Sullivan Maurice , Plant David V.
Published: October 2020

We determine that with frequency-domain implementation of digital resampling, upsampling-free KK algorithm achieves lower computational complexity than conventional KK algorithm in a SP-SSB short-reach link.
Efficient and Nonlinearity-tolerant Probabilistic Shaping for Capacity-approaching Optical Transmission Systems
Authors: Zhuge Qunbi , Fu Mengfan , Liu Qiaoya , Yi Lilin , Hu Weisheng
Published: October 2020

Recent progress of the efficient methods to implement probabilistic shaping and the schemes to improve nonlinear tolerance of probabilistic shaping is reviewed and discussed.
Experimental study of the effect of integral nonlinearity in 8-bits resolution DACs on 256-QAM
Authors: Abu-Romoh Mahmood , Skvortcov Pavel , Zhang Tingting , Nguyen Tu T. , Phillips Ian , Forysiak Wladek
Published: October 2020

We experimentally quantify the effect of digital to analogue converter’s integral nonlinearity on effective number of bits and its signal to noise ratio penalties on 256-QAM.
Machine Learning in Quantum Communication
Authors: Rückmann Max , Kleis Sebastian , Schaeffer Christian G. , Zibar Darko
Published: October 2020

Phase estimation of signals below noise is a main challenge in optical quantum communication receivers. Heterodyne detection at a SNR of less than -20 dB with machine learning based optimized carrier phase estimation is demonstrated.
Determinantes del uso político de Facebook en Ecuador: actitudes, reclutamiento y emociones
Authors: Zumárraga-Espinosa Marcos , Silva-Valdivieso Laura , Trujillo-Sánchez Andrea
Published: October 2020

Esta investigación tiene el propósito de contribuir al entendimiento de los determinantes de la participación política en Facebook. Partiendo del modelo de voluntarismo cívico se pudo verificar, mediante regresiones múltiples, que las actitudes políticas, las emociones y los esfuerzos de reclutamiento influyen sobre el uso político de Facebook. Contrariamente, la disponibilidad de recursos no constituye un predictor significativo. Asimismo, el efecto movilizador de las emociones cambia según los niveles individuales de eficacia política.
Utilization of bull fertility-associated antigen to improve the quality of frozen bull semen
Authors: Suprayogi Tri Wahyu , Hardijanto Hardijanto , Hariadi Mas'ud , Rantam Fedik Abdul , Darmanto Win
Published: October 2020

Background and Aim: The implementation of artificial insemination (AI) is one of the strategies to use superior male semen optimally to improve the genetic quality of livestock. One of the factors that influence AI is a fertility-associated antigen (FAA). This research aimed to examine the effects of FAA extracted from the accessory sex glands of a bull from a slaughterhouse that was added in bull semen freezing medium to increase cattle (bull) fertilization.

Materials and Methods: This research used a randomized complete block design. It consisted of two research phases, namely, explorative and experimental phases. The first phase involved determining the FAA molecular weight using the SDS-PAGE method, and the second phase consisted of laboratory and field testing, including testing the quality of frozen semen supplemented with FAA extracted from the accessory glands of a bull's genital organ from a slaughterhouse with various doses (0, 5, 10, and 15 μg in every 200 million progressively motile spermatozoa).

Results: The results showed that the percentages of bull sperm motility between the groups without and with the additional administration of FAA with a dose of 5 μg did not significantly differ. However, there was a difference between the groups without and with the additional administration of FAA with doses of 10 and 15 μg. After further testing, the highest percentage of sperm progressive motility occurred at a dose of 15 μg/200 million progressively motile spermatozoa (P3), which was equal to 2.59±46.88b (%).

Conclusion: This research found that not all of the accessory glands (seminal vesicles) of bulls taken from the slaughterhouse contain the FAA. An FAA level between the accessory glands (seminal vesicles) of one cattle to another is different. The addition of the FAA protein from the accessory sex glands of a bull's organ in cattle semen can improve fertility by increasing the percentage of viability, motility, intact plasma membrane of spermatozoa, and pregnancy rate of bulls and decreasing the sperm capacitation post-thawing.
Tornar-se professor: o ordinário e o extraordinário formativo das professoralidades na educação profissional e tecnológica
Authors: Miranda Neurisângela Maurício dos Santos , Sales Márcea Andrade
Published: October 2020

Este artigo atualiza dados de incursões investigativas realizadas, desde o ano de 2013, no campo da formação de professores em exercício da Educação Profissional e Tecnológica (EPT), particularmente em um Instituto Federal de Educação, e se inscreve em uma discussão perspectivada na Filosofia da Linguagem e da Diferença. A escolha desse campo justifica-se por constituir-se cenário em que conceitos e práticas sobre a formação e inserção dos professores iniciantes são produzidos a partir de diferentes deslocamentos epistemológicos, ontológicos e metodológicos, tendo em vista a natureza dos processos de admissão e atuação dos docentes, cuja maioria é de não licenciados, os quais tornam-se professores no exercício da profissão. Assim, entre o ordinário e o extraordinário do acontecimento da docência na EPT, valendo-nos de gestos de escuta, numa perspectiva derridiana de otobiografia, mobilizamos uma dimensão pedagógica implicada nestes gestos, propondo uma desconstrução da lógica racionalista atribuída à formação em exercício, na qual deslocamos o entendimento de exercício como mero status de quem está exercendo a profissão, para aproximá-lo da ideia de atividade aprendente e formadora da professoralidade. Nesse processo, mobilizamos alternativas metodológicas que transformam os tradicionais encontros pedagógicos em espaços-tempos de planejamento e formação, considerando as narrativas escritas dos professores, com atenção às dos iniciantes, como principal dispositivo de produção e gestão curricular, bem como de problematização do exercício profissional como geotemporalidade formativa. Com isso, desvencilhamo-nos da formação de professores referendada na instrumentalização e certificação pedagógicas, para atentarmo-nos aos fluxos da autoria e da invenção na produção de cada professoralidade.
Indução profissional e o início do trabalho docente: debates e necessidades
Authors: Cruz Giseli Barreto da , Farias Isabel Maria Sabino de , Hobold Márcia de Souza
Published: October 2020

Este escrito, em forma de um ensaio teórico, objetiva problematizar o conceito de indução profissional docente, reflexão desenvolvida em diálogo com a análise sobre as possibilidades e fragilidades que permeiam o começo da carreira docente. O artigo parte da distinção dos termos inserção profissional, professores iniciantes, professores principiantes, professores ingressantes e indução docente, todos articulados ao campo da formação de professores. Neste percurso discute concepções e políticas de indução profissional docente na busca por evidenciar a indução não como uma forma de induzir os professores em início de carreira à continuidade no trabalho docente, mas como um constructo que reconhece e defende a necessidade de que esses professores tenham espaço de formação, acolhimento e acompanhamento de sua atuação profissional. Argumenta-se que o conceito de indução entre nós não pode ser incorporado sem uma compreensão crítica em relação às condições objetivas e subjetivas de trabalho vividas pelos professores, as quais, em muitos países estrangeiros, são bem mais adequadas do que na realidade brasileira. As análises deste ensaio encontram-se sustentadas nos estudos de: Alarcão e Roldão; Cochran-Smith; Lima; Marcelo; Marcelo e Vaillant; Vaillant.
As pesquisas sobre professores iniciantes: uma revisão integrativa
Authors: Almeida Patrícia Cristina Albieri de , Reis Adriana Teixeira , Gomboeff Ana Lucia Madsen , André Marli Eliza Dalmazo Afonso de
Published: October 2020

Este texto apresenta uma revisão integrativa da literatura em que se buscou analisar as tendências dos estudos sobre o professor iniciante e identificar se e como as produções têm indicado, a partir dos resultados das pesquisas, recomendações para promover a inserção profissional dos docentes no início da carreira. Optou-se por realizar o levantamento no período de 2000 a 2019 e tomou-se, como corpus de análise, os trabalhos apresentados nas reuniões anuais da Anped, as dissertações e teses disponíveis no catálogo de Teses e Dissertações da Capes e, ainda, os artigos disponíveis no website do SciELO e do Educ@. Destacam-se nos achados da revisão que, depois de 2014, houve um aumento importante de publicações sobre o tema. Nesse período mais recente emergiu o interesse pelo estudo com egressos de programas públicos de iniciação à docência na formação inicial com destaque ao Pibid e de ações de formação continuada propostas em secretarias estaduais e municipais. Aumentaram, também, os trabalhos com foco nas ações formativas de apoio e acompanhamento ao professor que ingressa na profissão, destacando-se as contribuições do uso de dispositivos de formação e dos grupos colaborativos. Por outro lado, persistem algumas lacunas e conclui-se que ainda há muito que aperfeiçoar nas pesquisas para que haja uma contribuição efetiva na constituição do campo, pois são poucos os estudos que problematizam seus resultados, aprofundam as análises e interpretações, de modo que se possa gerar um conhecimento mais abrangente e consistente permitindo indicar caminhos, ações e práticas que favoreçam a inserção profissional dos docentes.
O isolamento docente e seus condicionantes no início da docência em ciências
Authors: Amorim Mariana Barbosa de , Maestrelli Sylvia Regina Pedrosa
Published: October 2020

Este trabalho direciona o olhar para o início da docência em ciências e mais especificamente para a questão do isolamento docente, trazido como um dos principais problemas enfrentados no período de inserção profissional. A partir de breve aporte teórico sobre o tema, fundamentado em autores que discutem a questão da formação, da cultura profissional e do trabalho docentes, e do contato com a perspectiva de professoras iniciantes de ciências de Florianópolis sobre o tema por meio da realização de entrevistas narrativo-reflexivas, buscou-se identificar quais são os principais condicionantes do isolamento destes sujeitos. Os condicionantes identificados se relacionam a compreensões sobre a docência e à trajetória formativa (história de vida, opção pela docência, formação profissional), a condições de trabalho (mais ou menos imediatas, mas bastante vinculadas à condição de substituto nas escolas), a relações interpessoais na escola (a importância da equipe pedagógica, as dificuldades nas relações com colegas, a motivação proporcionada pelo contato com estudantes) e aos modos de funcionamento da escola (se estimulam o isolamento ou a colaboração). A cultura escolar foi identificada como fio que conecta estes condicionantes, evidenciando que a mudança escolar necessária, que possibilite a humanização dos sujeitos, passa pela superação do choque cultural no início da docência, o que demanda da formação inicial, da escola, das redes de ensino e de políticas públicas articulações para uma maior aproximação com a realidade profissional, colocando em diálogo conhecimentos que sustentam práticas pedagógicas coerentes.
Comunidades de Aprendizagem e práticas colaborativas nos processos de inserção profissional
Authors: Passos Laurizete Ferragut , Andrade Maria de Fátima Ramos de , Aparicio Ana Silvia Moço , Costa Elana Cristiana dos Santos
Published: October 2020

O trabalho colaborativo se apresenta como resposta ao individualismo marcado historicamente na cultura das instituições escolares. O artigo analisa os modos de colaboração que constituem as comunidades de aprendizagem profissional, suas relações com a cultura da escola e com o processo de inserção de professores iniciantes. As formas de interação entre docentes nos locais de trabalho e descritas como colaboração nem sempre expressam metas, ações comuns e decisões mais amplas que envolvem a melhoria das práticas, dos conhecimentos e das concepções e que resultem na qualidade da docência e da gestão. A instituição escolar precisa se posicionar em relação a essas decisões e criar condições para que novas formas de colaboração beneficiem o trabalho pedagógico do professor. As características e dimensões dos grupos colaborativos constituídos como comunidades de aprendizagem são exploradas a partir de critérios apresentados pela literatura na perspectiva de assegurar a aprendizagem e o desenvolvimento profissional dos professores em inserção profissional. A análise de uma experiência pedagógica de aprendizagem colaborativa no âmbito da pesquisa de professores e da relação universidade-escola é apresentada como potencializadora da reflexão, do questionamento de crenças e valores, assim como da problematização das escolhas didáticas que orientarão a prática de professores na sala de aula.
Formadores de professores: conceito, contextos e perspectivas de atuação em processos de indução à docência
Authors: Ambrosetti Neusa Banhara , Lima Francine de Paulo Martins , Signorelli Glaucia , Calil Ana Maria Gimenes Corrêa
Published: October 2020

O objetivo do presente artigo é contribuir para a reflexão em torno da figura do formador escolar, examinando a natureza e as especificidades do seu trabalho, o papel e as perspectivas de atuação desse profissional nos processos de indução de professores iniciantes. O texto apresenta-se em forma de um ensaio teórico, na interlocução com autores que vêm discutindo essas questões. A discussão apoiou-se em estudos sobre os formadores de professores que atuam na formação continuada, no âmbito das escolas ou sistemas de ensino. Os estudos apontaram a complexidade e relevância dessa função no processo de desenvolvimento profissional de professores e na busca pela qualificação dos processos de ensino. Os formadores de professores revelam-se figuras essenciais nos processos de indução de professores novatos, tendo sob sua responsabilidade o desenvolvimento de ações de acolhimento e apoio necessários aos iniciantes, de forma a favorecer a inserção gradativa na cultura e no grupo profissional. A partir das análises dos diferentes estudos contemplados no texto, são destacados alguns aspectos a serem considerados, no sentido de contribuir para o desenvolvimento de iniciativas no delineamento de processos de indução de professores iniciantes.
Uma professora em início de carreira: narrativas sobre as tensões em seu desenvolvimento profissional
Authors: Anjos Daniela Dias dos , Nacarato Adair Mendes
Published: October 2020

Este texto objetiva analisar as tensões que foram marcantes no desenvolvimento profissional de uma professora dos anos iniciais, ao ingressar numa rede pública de ensino. Inicialmente apresentam-se algumas concepções de professor iniciante, presentes na literatura, e adota-se a perspectiva histórico-cultural como quadro teórico, com os estudos de Yves Clot e colaboradores sobre a atividade docente, o gênero profissional do professor. Os dados consistem de diferentes narrativas da professora: memorial de formação na dissertação de mestrado, narrativas escritas e orais produzidas durante sua participação no Programa Observatório da Educação e uma narrativa produzida especificamente para a pesquisa. A análise centra-se em três unidades temáticas: ingresso na carreira; tensões entre a formação acadêmica e o real da atividade docente; e o coletivo de trabalho. A análise aponta indícios de um desenvolvimento marcado por avanços e por momentos de realização profissional, mas também por retrocessos e angústias, principalmente quando a professora reflete sobre sua formação acadêmica, contrapondo-se com seu poder de agir com os alunos no processo de alfabetização. Destacam-se os seus momentos de tensão, ao ingressar numa escola periférica com condições de trabalho adversas e sem o apoio da gestão escolar, culminando em adoecimento.
Solitary central neurofibroma of the maxilla: A Case Report
Authors: Danesteh Hossein , Sadeghzade Azita , Jafarpour Dana
Published: October 2020

Neurofibroma is a benign tumor which rarely occurs in the oral cavity. Generally, oral neurofibroma is part of a neurofibromatosis type-1 like syndrome (Von Recklinghausen’s disease) and rarely occurs as a solitary lesion of oral cavity. Up to now, few cases have been reported with the solitary neurofibromas of tongue and submandibular gland. The tumor can also be rarely located centrally in the bone. This research presents a central neurofibroma case in the maxillary bone which has no relationship with the neurofibromatosis.
Keywords
Central neurofibroma; Neurofibromatosis; Solitary neurofibroma; Von Recklinghausen’s disease.
Evaluation the Effect of Different Antioxidants Applied After Bleaching on Teeth Color Stability
Authors: Degirmenci Alperen , Kara Emine , Unalan Degirmenci Beyza , Ozcan Mutlu
Published: October 2020

Objective: Vital bleaching is popular treatment option for discolored teeth. But at post-treatment stage, loss of adhesion is highly reported. Literature focused on antioxidant application for the answer of this issue. The aim of this study is comparing effects of six different antioxidants on color stability of bleached teeth. Material and Methods: This study includes total of 84 extracted intact non-carious lower incisors. 35% hydrogen peroxide was applied on the labial surfaces of specimens in accordance with manufacturer's instructions. The bleached teeth were divided into 7 groups. No antioxidants were applied to the control group. For the experimental groups, the following antioxidants were applied for 10 minutes each: 5% proanthocyanidin, 5% sodium ascorbate, 5% lycopene, %5 green tea, %5 white tea and %5 ?-tocopherol. CIE L*, a* and b* values of the teeth were measured by a spectrophotometer. The data were analyzed using IBM SPSS version 23. Results: The differences between the groups were determined with one-way ANOVA. The one-way ANOVA test revealed a statistically significant difference between the groups (p<0.005). Highest color change was observed in lycopene group and the lowest was belongs to green tea group. Conclusions: Proanthocyanidin, white tea and green tea could be good post-bleaching antioxidant alternatives based on their herbal nature.
Quality of life in a smoking cessation program: lifestyle, anxiety, and depression
Authors: Junqueira de Faria Daniela , Almeida Adriana Ávila de , Boaventura da Silva Igor , Balducci Ivan , Faig Lima Carta Celina , Nicodemo Denise , Dias Almeida Janete
Published: October 2020

Objective: Tobacco dependence is quite variable among individuals because it includes many aspects such as psychological, emotional, behavioral, and cultural perspectives. This study aimed to evaluate the social and emotional issues of patients in a smoking cessation program through the generic and specific quality of life questionnaires. Material and Methods: Two generic questionnaires (SF36 and Fantastic Lifestyle) and two specific (SRQ-20 for depression and IDATE s/t for levels of state and anxiety trait) were applied at the first meeting and after three months of treatment. Data were statistically analyzed by the Pearson correlation coefficient (significance level of 5%). Results: In total, 15 participants (10 men, 5 women), with mean age of 60 and 56, respectively. The mean of the smoking intake was 65.88±34.37 for men and 35.66±11.17 for women. SRQ20 and IDATE s/t indicated that poor improvement in depression and anxiety was related to relapse; SF36 questionnaire indicated improvement in the domains of physical aspect limit, pain, social and emotional aspects; Fantastic Lifestyle indicated improvement according to its scale, being in a first moment "Regular" (53 points), and later, "Good" (55.67 points). Conclusion: In conclusion, smoking cessation treatment is correlated to the decrease in anxiety and depression levels and improvement of the general quality of life.
Keywords
Quality of life; Smoking cessation; Life style; Anxiety; Depression.
Building a Successful and Sustainable Academic Career in Gastroenterology
Authors: Sprung Brandon , Marino Danielle , Yoon Sonia , Kaul Vivek
Published: October 2020

Starting a new job as an academic gastroenterologist can be very exciting and anxiety provoking at the same time. This is particularly true when the junior faculty member is faced with the unique challenges of practicing medicine in today's world while still attempting to maintain work-life balance and avoid professional burnout. In discussions with several junior colleagues in the specialty over the years, it became clear that there is a relative lack of structured guidance in the literature regarding helping them navigate these turbulent waters in their early careers and setting them up for professional success in the long term. Although there is no guaranteed single formula or recipe for academic success, in this review, we attempt to outline in a stepwise fashion the critical components that we believe are important for junior faculty to consider as they embark on this journey. The significance and value of each step from job selection through promotion and mentorship is discussed in detail based on insights gleaned from experience and the published literature. The importance of citizenship, networking, mission and community-based activities, and work-life balance is highlighted as well. The concept of appreciating and enjoying the “journey,” rather than focusing solely on the destination, is emphasized in this paper. We truly believe that these are critical core concepts for junior faculty to grasp that will allow them to derive immense professional gratification in the long run while building successful professional careers along the way.
Contrasting Clinician and Insurer Perspectives to Managing Irritable Bowel Syndrome: Multilevel Modeling Analysis
Authors: Shah Eric D. , Chang Lin , Salwen-Deremer Jessica K. , Gibson Peter R. , Keefer Laurie , Muir Jane G. , Eswaran Shanti , Chey William D.
Published: October 2020

INTRODUCTION:

Insurance coverage is an important determinant of treatment choice in irritable bowel syndrome (IBS), often taking precedence over desired mechanisms of action or patient goals/values. We aimed to determine whether routine and algorithmic coverage restrictions are cost-effective from a commercial insurer perspective.

METHODS:

A multilevel microsimulation tracking costs and outcomes among 10 million hypothetical moderate-to-severe patients with IBS was developed to model all possible algorithms including common global IBS treatments (neuromodulators; low fermentable oligo-, di-, and mono-saccharides, and polyols; and cognitive behavioral therapy) and prescription drugs treating diarrhea-predominant IBS (IBS-D) or constipation-predominant IBS (IBS-C) over 1 year.

RESULTS:

Routinely using global IBS treatments (central neuromodulator; low fermentable oligo-, di-, and mono-saccharides, and polyols; and cognitive behavioral therapy) before US Food and Drug Administration-approved drug therapies resulted in per-patient cost savings of $9,034.59 for IBS-D and $2,972.83 for IBS-C over 1 year to insurers, compared with patients starting with on-label drug therapy. Health outcomes were similar, regardless of treatment sequence. Costs varied less than $200 per year, regardless of the global IBS treatment order. The most cost-saving and cost-effective IBS-D algorithm was rifaximin, then eluxadoline, followed by alosetron. The most cost-saving and cost-effective IBS-C algorithm was linaclotide, followed by either plecanatide or lubiprostone. In no scenario were prescription drugs routinely more cost-effective than global IBS treatments, despite a stronger level of evidence with prescription drugs. These findings were driven by higher prescription drug prices as compared to lower costs with global IBS treatments.

DISCUSSION:

From an insurer perspective, routine and algorithmic prescription drug coverage restrictions requiring failure of low-cost behavioral, dietary, and off-label treatments appear cost-effective. Efforts to address insurance coverage and drug pricing are needed so that healthcare providers can optimally care for patients with this common, heterogenous disorder.
KUALITAS PENGUNGKAPAN CSR PADA PERUSAHAAN LQ45 DAN FAKTOR YANG MEMPENGARUHINYA
Authors: Solikhah Badingatus , Kuswoyo Adistya
Published: October 2020

The purpose of this study is to examine the effect of board commissioners meeting frequency, board directors gender diversity, institutional ownership, managerial ownership, industrial sensitivity, and slack resources on CSR disclosure. The population of this study is LQ45 companies listed on the Indonesia Stock Exchange. The sample selection used purposive sampling method, thus obtained 77 unit of analysis. This study used multiple regression analysis. The results showed that frequency of board commissioners meeting and indsutry sensitivity has positive significant effect on CSR disclosure. Meanwhile, boar director gender diversity, innstitutional ownership, managerial ownership, and slack resources do not affect the CSR disclosure.
Simulation study of signal gain optimization based on hybrid composition techniques for high-speed optically dense multiplexed systems
Authors: Eid Mahmoud M. A. , Rashed Ahmed Nabih Zaki , El-Meadawy Shimaa , Ahmed Kawsar
Published: October 2020

This study created a 13 Gb/s transmission speed per 300 channel dense wavelength division multiplexing system based on hybrid optical fiber amplifiers and filter techniques to enhance signal gain. The filter techniques used here included a hybrid optical amplifier, a gain flattening filter (GFF), a Fabry–Perot filter, a fiber Bragg grating (FBG), and glass composition technique. The techniques were combined to optimize signal gain as follows: the study began with an erbium-doped fiber amplifier (EDFA), added a Raman amplifier, added GFF, added fiber Bragg grating, added glass composition, and finally achieved a hybrid-modified model after adding Fabry–Perot filter. The signal gain was optimized with the hybrid-modified model via the different operating parameters of the EDFA. The proposed model also showed a better performance (30–40 dB greater) than the previous model (Mahran O, Aly MH. Performance characteristics of dual-pumped hybrid EDFA/Raman optical amplifier. OSA – Applied Optics Jan 2016;55:22–6) after changing the values of the signal wavelength, the EDFA, and the length of the Raman amplifier.
Relación entre hábitos y actitudes hacia la alimentación con indicadores antropométricos por sexo en adolescentes de secundaria
Authors: Ávalos Latorre María Luisa
Published: October 2020

En la actualidad, el sobrepeso y la obesidad son problemas de salud que ponen en riesgo la vida de las personas. Aunque existen estudios al respecto, son pocos los que abordan de manera exhaustiva y específica los hábitos, pensamientos y actitudes relacionados con estos problemas de salud. Por ello, la presente investigación analiza la relación entre los hábitos y actitudes de adolescentes con los indicadores antropométricos de acuerdo con el sexo. Participaron 673 estudiantes de educación secundaria, quienes respondieron una ficha de datos sociodemográficos y escolares, así como el Cuestionario de Sobreingesta Alimentaria (OQ, por sus siglas en inglés), el cual cuenta con índice y consistencia interna de 0.65 a 0.87 en población mexicana. Se tomaron medidas de peso, talla y circunferencias. Los resultados muestran que tanto las mujeres como los hombres con IMC > 29.9 experimentan ciclos de subingesta de alimento (r = 0.120, p < 0.05; y r = -0.153, p < 0.01, respectivamente), racionalizan su peso (r = 0.239, p < 0.01; y r = 0.387, p < 0.01) y muestran interés para bajar de peso (r = 0.533, p < 0.01; y r = 0.497, p < 0.001). La presencia de sobrepeso y la obesidad en adolescentes contribuyen al deseo de perder peso y a recurrir a estrategias hipocalóricas, por lo que resultará importante promover hábitos saludables en los estudiantes adolescentes.
Estudio sobre conocimiento de la biodiversidad faunística en niños de primaria de tres comunidades del Área Natural Protegida Laguna de Términos, Campeche, México
Authors: Trejo Jenner Rodas , Ocampo-González Paola , Rau-Acuña Jaime
Published: October 2020

El dibujo ha sido empleado como una herramienta de análisis del conocimiento de los niños hacia su medio natural. El objetivo del trabajo fue analizar el conocimiento de niños de primaria hacia la diversidad faunística en comunidades del Área de Protección de Flora y Fauna Laguna de Términos (APFFLT) utilizando al dibujo como una herramienta exploratoria. Los dibujos fueron analizados con la técnica de análisis de contenido, agrupando los elementos gráficos en cinco categorías: animales, elementos terrestres, acuáticos, aéreos y antrópicos. Se analizaron 101 dibujos, identificando 648 animales de 83 especies: 35 mamíferos, 18 aves, 13 reptiles, 11 peces, cuatro invertebrados y dos anfibios. La mayoría de los elementos estuvieron representados en ambientes de selva y ríos (> 90%). Especies con las que se realizaron actividades de educación ambiental, como cocodrilo, manatí y tortugas, fueron las más representadas. Se concluye que existió una relación y conocimiento amplio de los niños hacia el ecosistema.
Utility of a Shortened Isometric Midthigh Pull Protocol for Assessing Rapid Force Production in Athletes
Authors: Suarez Dylan G. , Carroll Kevin M. , Slaton Jake A. , Rochau Kyle G. , Davis Michael W. , Stone Michael H.
Published: October 2020

Suarez, DG, Carroll, KM, Slaton, JA, Rochau, KG, Davis, MW, and Stone, MH. Utility of a shortened isometric midthigh pull protocol for assessing rapid force production in athletes. J Strength Cond Res 36(7): 1819–1825, 2022—The purpose of this investigation was to determine the magnitude of difference, reliability, and relationship to performance of a shortened isometric midthigh pull (IMTP) protocol. Fourteen strength-trained men (age: 26.8 ± 5.0 years, height: 176.3 ± 6.9 cm, body mass: 86.8 ± 13.9 kg, and training age: 8.5 ± 6.9 years) performed 1-second (SHORT) and traditional (TRAD) IMTP protocols during consecutive weeks. Peak force (PF), instantaneous force (90 & 200 ms), rate of force development (RFD) (0–90 ms & 0–200 ms), and impulse (0–90 ms & 0–200 ms) from each protocol were collected. Paired samples t test and Hedge's g were calculated to determine the magnitude of difference in each variable between protocols. Within-session and between-session reliability was assessed with intraclass correlation coefficient, coefficient of variation, and 95% confidence intervals. Static jumps were performed to compare relationships of the IMTP variables from each protocol with jumping performance. There was no statistically significant (p > 0.05) difference in PF between the protocols (p = 0.345; g = −0.07). All early force-time variables were significantly higher in the SHORT protocol (p = <0.001–0.018; g = 0.38–0.79). The SHORT protocol resulted in more reliable RFD measures within-session. Correlations with jumping performance were mostly similar between protocols (r = 0.253–0.660). The SHORT IMTP protocol resulted in comparable PF values and considerably higher early force-time characteristics despite a restrained time to produce force and shorter rest. The SHORT protocol allows for an accurate assessment of rapid force-generating abilities while necessitating shorter collection periods than typical IMTP protocols.
Stretch-Shortening Cycle Function of Lower Limbs After Cycling in Triathletes
Authors: Takahashi Keigo , Shirai Yusuke , Nabekura Yoshiharu
Published: October 2020

Takahashi, K, Shirai, Y, and Nabekura, Y. Stretch-shortening cycle function of lower limbs after cycling in triathletes. J Strength Cond Res 36(9): 2610–2614, 2022—Impaired cardiorespiratory response and changes in biomechanical variables occur when running after cycling relative to isolated running. Nevertheless, little is known about the causes of these changes or the training to prevent them. This study aimed (a) to determine whether stretch-shortening cycle (SSC) function decreases after cycling exercise and (b) to determine whether the decreases in SSC function are related to brick training. Eleven male university triathletes performed hopping tests to measure SSC function before and after cycling (30 minutes of cycling at 110% ventilatory threshold). Stretch-shortening cycle function was calculated as the ratio of the jump height to the time spent in contact with the ground (reactive strength index [RSI]). Brick training was evaluated by the total experience of brick training. The RSI significantly decreased after the cycling exercise (−10.7%; p < 0.01), but changes in RSI after cycling did not significantly correlate with the total experience of brick training, despite a large effect size (p < 0.10; r = 0.62). These results suggest that SSC function decreases after cycling and that brick training is potentially useful for inhibiting decreases in SSC function after cycling.
A Retrospective Analysis of the National Youth Teams in Volleyball: Were They Always Faster, Taller, and Stronger?
Authors: Mostaert Mireille , Pion Johan , Lenoir Matthieu , Vansteenkiste Pieter
Published: October 2020

Mireille, M, Johan, P, Matthieu, L, and Pieter, V. A retrospective analysis of the national youth teams in volleyball: Were they always faster, taller, and stronger? J Strength Cond Res 36(9): 2615–2621, 2022—Although there are numerous studies comparing the characteristics of young and adult volleyball players of different levels, it remains unclear to what extent these findings can be used for performance prediction because very few are based on longitudinal or retrospective analyses. The aim of the current retrospective study was to test to what extent anthropometry, physical performance, and motor coordination can predict future selection in national youth teams. From 2012 to 2015, 1738 10- to 13-year-old boys and girls who played volleyball completed 3 anthropometric, 4 physical performance, and 3 motor coordination tests. In January 2020, 52 athletes of this sample were found to be part of one of the national youth teams of Belgium. A multivariate analysis of covariance, discriminant analyses, and logistic regression analyses were conducted to compare the test results of the selected vs. the nonselected players. Significance level was set at p ≤ 0.05. Results showed that the selected players were already taller and showed better jumping performance, and for females, they tended to have better motor coordination at the time of baseline measurement. Therefore, it seems important to focus on the development of motor coordination and jumping performance at young ages because superiority in these characteristics increases the chances to be selected for the national team 4–8 years later. Nevertheless, considering the large variation in results, selection cannot be made based on these characteristics alone. The practical implications for coaches and federations with respect to training and talent detection are discussed.
Settled
Authors: Rudy Jason R.
Published: October 2020

Jason R. Rudy, “Settled: Dorrit Down Under” (pp. 184–206)

Although the conclusion to Charles Dickens’s Little Dorrit (1855–57) finds the protagonists Arthur Clennam and Amy Dorrit comfortably situated in London, the novel’s long and meandering narrative entertains alternate possibilities. This essay considers the relation of emigration to British middle-class identity, both in the historical context of the 1850s and in the fictional world of Dickens’s novel. Australian free emigration, which saw a significant rise in the 1850s, serves as a limit case against which to test the significance of remaining at home in England. Little Dorrit is a novel that “settles” on a domestic life of bourgeois stability, but it arrives at this conclusion only after contemplating less-predictable futures abroad. Dickens himself considered emigrating to Australia while writing Little Dorrit, and the novel’s quiet conclusion reflects the author’s own conflicted resolution to forego life beyond British shores. Dickens’s novel ultimately suggests that Victorian middle-class stability depended at least in part on the rejection of economic possibilities abroad.
Effect of Silver Content on the Crystalline Phase and Microstructure of TiO2 Coating Deposited on Unglazed Ceramics Tile
Authors: Hafizah N.Z. , M. Juoi J. , Zulkifli M.R. , Musa M.A.
Published: October 2020

The synthesis of Ag-TiO2 coating using AgNO3 precursor is expected to give the properties as pure as Ag nanoparticles. Commonly, high concentration of Ag attributed to agglomeration of silver species and reduction to Ag0 particles on TiO2 surface. In contrast, at lower concentration, Ag species exist as AgO, Ag2O and Ag0. Hence, the exact amount of Ag, which can effectively control the particle growth and agglomeration, surface area, thermal stability and band gap of the TiO2 coating, are still vague and stated differently. In the present study, the effect of Ag content on the phase transformation and surface morphology of Ag-TiO2 coating were reported. TiO2 sol were prepared by incorporating Ag at 2.5, 5 and 7.5 mol % and deposited on unglazed ceramic tiles thru five times dip coating. The deposited Ag-TiO2 coatings were heat treated at 500 °C for 1 hour soaking time. XRD analyses revealed that the deposited Ag-TiO2 coating consists of anatase, rutile, Ag2O and metallic Ag. Almost all the coating surfaces illustrated cracks. Increased Ag content lead to presence of tiny particles on the surfaces and EDX spectrum revealed the presence of Ti, O and metallic Ag particles. However, at the addition of 5 mol % Ag, there was no metallic Ag presence and a dense coating with the lowest thickness of ±11.4µm is observed.
Are Ethical Issues Becoming Prevalent Among Business Management Researchers?
Authors: Ayodele Freida Ozavize , Cheng Eaw Hooi , Haron Hasnah , Dabor Eyasan Leslie
Published: October 2020

This study investigates the prevalence of unethical issues among business-management researchers based on retraction publications from the retraction watch database. Forty-two publications retracted between 2007 and 2019 were analyzed based on the frequency of retraction over time, Journals’ impact factors, the type of Journals, the publisher, and the nature of the misconduct. The retraction analysis revealed that research misconduct in business management research is fast evolving around known and emerging themes. The study, therefore, suggests business academics stakeholders rethink the institutional policies for better moral based publication strategies to tackle the upsurge and promotes the continuous supply of reliable information necessary for decision-making in the business management field.