bluuebunny/crossref_metadata_2025 huggingface dataset:
Developing a Taxonomy of Communication Techniques and Aids Used By Healthcare Providers During Patient Consultations: Protocol for a Systematic Review (Preprint)
Authors: Shersher Violetta , Haines Terry P , Williams Cylie , Willoughby Louisa , Sturgiss Elizabeth , Weller Carolina
Published: October 2019

BACKGROUND

Currently, there is no available standardized taxonomy of defined communication techniques and aids used by healthcare providers during patient consultations. It is challenging to identify communication techniques that contribute to effective healthcare provider and patient consultations and to replicate communication interventions in research.

OBJECTIVE

The aim of this paper is to describe a protocol for the development and pilot of a taxonomy of communication techniques and aids used by healthcare providers during patient consultations.

METHODS

A systematic review will be completed to identify eligible studies. Extracted techniques and aids will be organized into a preliminary taxonomy by a multidisciplinary team. The preliminary taxonomy will be piloted by two groups: research assistants trained in taxonomy application and healthcare providers and healthcare professional students not trained in taxonomy use. The pilot will use custom developed video footage of health provider and patient interactions. Interrater validity and interview feedback will be used to inform a Delphi panel of multidisciplinary healthcare providers and patient experts when they convene to finalize the preliminary taxonomy.

RESULTS

This study was funded in November 2017 by the Monash University Interdisciplinary Research Seed Funding Scheme. Data collection commenced in March 2018, and data analysis is in progress. We expect the results to be published in 2021.

CONCLUSIONS

This is the first known attempt to develop a defined and standardized taxonomy of communication techniques and aids used by healthcare providers in patient consultations. The findings will be used to inform future research by providing a detailed taxonomy of healthcare providers’ communication techniques and standardized definitions.

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/16801
Blockchain-Authenticated Sharing of Genomic and Clinical Outcomes Data of Patients With Cancer: A Prospective Cohort Study (Preprint)
Authors: Glicksberg Benjamin Scott , Burns Shohei , Currie Rob , Griffin Ann , Wang Zhen Jane , Haussler David , Goldstein Theodore , Collisson Eric
Published: October 2019

BACKGROUND

Efficiently sharing health data produced during standard care could dramatically accelerate progress in cancer treatments, but various barriers make this difficult. Not sharing these data to ensure patient privacy is at the cost of little to no learning from real-world data produced during cancer care. Furthermore, recent research has demonstrated a willingness of patients with cancer to share their treatment experiences to fuel research, despite potential risks to privacy.

OBJECTIVE

The objective of this study was to design, pilot, and release a decentralized, scalable, efficient, economical, and secure strategy for the dissemination of deidentified clinical and genomic data with a focus on late-stage cancer.

METHODS

We created and piloted a blockchain-authenticated system to enable secure sharing of deidentified patient data derived from standard of care imaging, genomic testing, and electronic health records (EHRs), called the Cancer Gene Trust (CGT). We prospectively consented and collected data for a pilot cohort (N=18), which we uploaded to the CGT. EHR data were extracted from both a hospital cancer registry and a common data model (CDM) format to identify optimal data extraction and dissemination practices. Specifically, we scored and compared the level of completeness between two EHR data extraction formats against the gold standard source documentation for patients with available data (n=17).

RESULTS

Although the total completeness scores were greater for the registry reports than those for the CDM, this difference was not statistically significant. We did find that some specific data fields, such as histology site, were better captured using the registry reports, which can be used to improve the continually adapting CDM. In terms of the overall pilot study, we found that CGT enables rapid integration of real-world data of patients with cancer in a more clinically useful time frame. We also developed an open-source Web application to allow users to seamlessly search, browse, explore, and download CGT data.

CONCLUSIONS

Our pilot demonstrates the willingness of patients with cancer to participate in data sharing and how blockchain-enabled structures can maintain relationships between individual data elements while preserving patient privacy, empowering findings by third-party researchers and clinicians. We demonstrate the feasibility of CGT as a framework to share health data trapped in silos to further cancer research. Further studies to optimize data representation, stream, and integrity are required.
Coal Fly Ash-based Geopolymer Spheres Coated with Amoxicillin and Nanosilver for Potential Antibacterial Applications
Authors: Lira Brandon  Cyril S. , Dellosa Sophia  Bianca A. , Toh Casey  Irene L. , Quintero Al Patrick A. , Nidoy Andre   Leopold S. , Cerna Kimmie  Dela , Yu Derrick Ethelbhert C. , Janairo Jose Isagani B. , Promentilla Michael Angelo B.
Published: October 2019

Geopolymers are emerging “green” materials for its low embodied energy and carbon footprint, and its potential to valorize wastes, such as coal fly ash. It is an inorganic cementitious material formed from the polymerization of aluminosilicates in an activating solution such as that of alkali hydroxides or silicates. Their superior mechanical properties, including heat and fire resistance make them an excellent material for diverse applications. Recent studies have also exploited the tunable open porosity and adsorbing properties of geopolymers. Our work thus explores the potential of porous geopolymer spheres for antibacterial applications. These spheres were synthesized using coal fly ash as the geopolymer precursor and the porous surface is coated with either amoxicillin or silver nanoparticles (AgNPs) adsorbed in the matrix. For the AgNP geopolymer spheres, SEM images show spherical nanostructures when using ascorbic acid as a reducing agent, while spherical, cubical, and wire structures were observed when reduced using NaBH4. Indication from UV-Vis results also suggests the gradual release of both amoxicillin and AgNPs in the solution from the functionalized geopolymer spheres. Using E. Coli as the test organism for a modified disk diffusion assay, both showed zones of inhibition against the bacteria. Further tests on antibacterial application of AgNP geopolymer spheres show their effectiveness to kill at least 95% of the E. coli in a water sample initially containing 105 cfu/mL in just 30 minutes.
Demographics of Students in Their Perspectives on Examination Cheating in Basic Education in Kenya
Authors: Ojwan’g Millicent Adhiambo
Published: October 2019

This study sought to find out in depth the demographics of students in their perspectives on examination cheating in Basic education in Kenya. The target population was 838 university freshmen of 2018/2019 academic year in a selected faith-based University in Kenya. The sample was 272 students. This study was guided by Kohlberg’s theory of moral development and Ajzen’s theory of planned behavior. Descriptive survey research design was used. Questionnaires comprising both closed and open-ended questions were administered. Data was analyzed by the use of descriptive statistics. Findings reveal that lack of preparedness and an excessive emphasis on grades are the main causes of cheating, while punishment is a critical deterrent to cheating in examinations. The study recommends that schools should ensure that students are adequately prepared for examinations; emphasize mastery of content as opposed to grades; and subject examination offenders to more severe punishment.
Challenges of Being a Chinese Principal: Practitioner Perspectives
Authors: Vogel Linda R. , Liu Dongfang
Published: October 2019

This qualitative study examined how public-school principals spent their professional day, the challenges they faced, and their advice to new principals regarding how to respond to the challenges they identified. The themes that emerged from the data underscored the demands of high-stakes test preparation that the participants felt undermined education quality and stifled student creativity. The relationships across themes that emerged identified being a good teacher and life-long learner as essential to instructional supervision and maintaining one’s focus on raising the quality of student’s educational experiences. Demonstrating a good moral character was even more critical, however, to maintaining one’s priorities and serving as a role model for teachers and students.
Impacto del IVA en la metodología de formulación y evaluación de proyectos de inversión
Authors: Gallardo Cervantes Juan
Published: October 2019

Como resultado de una investigación realizada en el primer trimestre de 2017 en el acervo bibliográfico de la Biblioteca “Enrique González Aparicio” de la Facultad de Economía de la Universidad Nacional Autónoma de México (UNAM) se encontró que actualmente ninguno de los libros de texto sobre formulación y evaluación de proyectos de inversión incluye al Impuesto al Valor Agregado (IVA) como parte de los aspectos financieros, especialmente en el tratamiento y análisis del presupuesto de inversiones y reinversiones. Consecuentemente, también se encontró que los diversos trabajos de investigación (tesis o tesinas) sobre proyectos de inversión presentados en exámenes profesionales, tanto de la Facultad de Economía como de otras Facultades de la UNAM, omiten la inclusión del IVA dentro del presupuesto de inversiones sin tener en cuenta los efectos fiscales que tal exclusión tiene en el desarrollo de los aspectos financieros y, en especial, en el cálculo de los indicadores de evaluación de proyectos.
Análise de dor e funcionalidade de pacientes com distúrbios osteomioarticulares de membros inferiores
Authors: Weber Cristiane Luci , Parenti Paula
Published: October 2019

Introdução: os distúrbios do sistema muscular acarretam dor e alteração da funcionalidade. A qualidade de vida é prejudicada e a execução das atividades de vida diária torna-se restrita. Objetivos: caracterizar os pacientes com distúrbios osteomioarticulares de membros inferiores, incluindo as condições de funcionalidade e intensidade da dor ao início da intervenção fisioterapêutica e analisar fatores sociodemográficos e aspectos inerentes aos atendimentos prestados. Metodologia: estudo do tipo retrospectivo, por meio da análise descritiva de prontuários dos pacientes em processo de reabilitação no setor de traumatologia, pelo serviço de fisioterapia no Centro Clínico da Universidade de Caxias do Sul/Reabilitação (CECLIN-UCS/REAB). Os dados foram coletados nos meses outubro e novembro de 2018. A amostra foi composta de 44 prontuários catalogados, e somente 21 adequaram-se aos critérios de seleção. Para análise de dor e funcionalidade foram examinadas a Escala Visual Analógica (EVA) e a Lower Extremity Functional Scale (LEFS). Resultados: o perfil dos pacientes constitui-se por maior predominância do sexo masculino, idade média de 40,14 (±16,9) anos, número de sessões fisioterapêuticas com média de 17,71 (±8,6), e média de 5,62 (±3,0) fisioterapeutas/estagiários e envolvidos em cada caso. O diagnóstico clínico mais prevalente foi de fratura de tíbia e fíbula. A média encontrada na LEFS é de 58,90 (±13,8) pontos. Conclusão: verificou-se que não há correlação entre a dor e funcionalidade pelas escalas EVA e LEFS (p=0,548). Sugere-se a necessidade de prosseguir o estudo de avaliação dos prontuários, a partir dos dados já existentes e maior número amostral.
Herramienta multimodal basada en tareas para el aprendizaje del inglés en el grado sexto en Florencia, Caquetá (Colombia)
Authors: Aguilar-Cruz Paola Julie
Published: October 2019

Este artículo da cuenta de un proceso de investigación-acción educativa, cuyo objetivo fue proponer una herramienta multimodal contextualizada teniendo en cuenta el Aprendizaje Basado en Tareas (TBL, por sus siglas en inglés), con el fin de contribuir al aprendizaje del inglés de un grupo de estudiantes de grado sexto en una institución educativa pública de Florencia, Caquetá. La herramienta se diseñó partiendo del análisis de la revisión documental, de encuestas y de un examen diagnóstico y, para su implementación, se utilizó el diario de campo y evidencia del trabajo de los estudiantes. Los resultados sugieren que el material contextualizado, la multimodalidad y el TBL promueven ambientes efectivos de aprendizaje en los que los estudiantes construyen conocimiento a partir de temas de su interés, de recursos como videos, juegos y plataformas digitales y, además, desarrollan de manera integrada las habilidades del idioma.
El componente pragmático: elemento indispensable para la lectura en contexto
Authors: Palacio Medina Adriana María , Palacio Medina Bibiana Andrea , Perea Mercado Leysy , Moreno Romaña María Claribeth
Published: October 2019

Una de las prioridades, al finalizar el primer ciclo de educación primaria en Colombia, es que los estudiantes puedan reconocer la función social que cumplen los diferentes tipos de texto que leen. Para ello, dentro de los Lineamientos curriculares de lenguaje se aborda como proceso indispensable el desarrollo del componente pragmático referido al uso del lenguaje en contexto, aprendizaje necesario no solo para la vida escolar sino también para la vida social del niño. El objetivo de esta investigación fue analizar cómo se enseña la lectura desde el componente pragmático en el grado 3.° de cuatro instituciones educativas públicas de Medellín. Se utilizó una modalidad de investigación cualitativa bajo el enfoque histórico-hermenéutico y el método estudio de caso múltiple donde participaron ocho docentes que fueron entrevistadas y observadas en su práctica de aula. Para fundamentar esta investigación nos apoyamos en varios referentes teóricos: el componente pragmático referido al uso del lenguaje de María Victoria Escandell (1996), la competencia comunicativa desde la mirada de Dell Hymes (1984), la lectura como actividad social comunicativa de Teresa Colomer (2001), la función social de la lectura de Judith Kalman (2003) y el conocimiento disciplinar y didáctico de Andrés Perafán (2014).

Entre los resultados más relevantes, encontramos que las concepciones de las docentes hacen que en las prácticas de aula prioricen más los aspectos gramaticales de la lengua, además, se le da preferencia a los componentes semánticos y sintácticos y se deja de lado el pragmático. Hallamos que es predominante el uso de la narración en las prácticas lectoras frente a otras tipologías textuales, impidiendo de esta manera explorar otras formas de ver el contexto, además, las docentes requieren de conocimiento disciplinar y orientaciones curriculares sobre el componente pragmático.

Se puede concluir que, debido a que el rol docente está sujeto a los guiones y rutinas, el desarrollo de las clases de lectura se vuelve esquemático y dificulta la posibilidad de ampliar las perspectivas didácticas; además, la apropiación que hace el docente de todas estas orientaciones ministeriales no genera interacción con el saber científico, es decir, la pragmática. Igualmente, en las clases se deben abrir espacios donde los estudiantes practiquen las tipologías argumentativas como lo hacen en los espacios no escolares, pues se resalta que el aula de clase hace parte de los diferentes espacios sociales donde interactúan los alumnos dentro de su cotidianidad.
Financeirização das commodities agrícolas e economia do agronegócio no Brasil: notas sobre suas implicações para o aumento dos conflitos pela terra
Authors: Michelotti Fernando , Siqueira Hipólita
Published: October 2019

A articulação entre financeirização das commodities e a corrida global por terras constitui um importante objeto de reflexão no debate contemporâneo. Esses movimentos têm sido associados a processos múltiplos que vão desde o aumento da demanda chinesa por matérias-primas à apropriação de terras em países com abundância em recursos naturais na América Latina e na África. Com ênfase nas implicações desses processos no Brasil, o objetivo deste artigo é identificar as relações entre as dinâmicas econômicas sistêmicas e a configuração de uma economia do agronegócio e suas implicações para o aumento dos conflitos territoriais e o agravamento da questão fundiária. A metodologia consiste em revisão crítica da literatura e análise de informações institucionais. O artigo destaca que a maior complexidade do regime de acumulação contemporâneo está associada à intensa apropriação territorial e à ampliação de conflitos fundiários no Brasil.
Economia brasileira no início do século xxi: desaceleração, crise e desindustrialização (2000-2017)
Authors: Pereira Sampaio Daniel
Published: October 2019

O objetivo do artigo é discutir a hipótese de desindustrialização absoluta no Brasil, principalmente a partir da segunda década do século XXI, quando o país entrou no ciclo da desaceleração e, posteriormente, da crise econômica. Para atingir tais objetivos, a trajetória da economia brasileira é organizada em ciclos: início de reversão (1999-2002), recuperação do crescimento (2003-2006), aceleração do crescimento (2007-2010), desaceleração (2011-2014), crise econômica (2015-2017). São utilizados dados do Produto Interno Bruto (PIB), produção industrial, contas externas e empregos. Os resultados apontam que o país está a caminho da desindustrialização absoluta desde o ciclo da desaceleração, tendo em vista que se observa queda da produção industrial e baixo dinamismo do PIB. Os setores de bens de capital e bens de consumo duráveis são os mais afetados, com reduções expressivas, em face da grande recessão.
Desconcentração regional da indústria no Brasil: razões para comemorar?
Authors: Monteiro Neto Aristides , De Oliveira Silva Raphael
Published: October 2019

O artigo analisa a desconcentração da indústria e seus rebatimentos no território nacional entre 1996 e 2015, utiliza um conjunto de indicadores, tais como valor de transformação industrial, produtividade da indústria e índice de Theil de desigualdade para cinco grupos de indústrias, definidos segundo o fator competitivo predominante. Conclui-se pela continuidade do movimento de desconcentração regional de atividades industriais. Contudo, sublinha que há também razões para se preocupar: uma é que a desconcentração ocorre em ambiente de perda de relevância da atividade industrial e outra é que a desconcentração se verifica de modo mais significativo em ramos intensivos em recursos naturais e em trabalho, setores tradicionais com baixa capacidade de produção e difusão de progresso técnico.
Exportações e o desenvolvimento regional: um balanço da Lei Kandir para o Rio de Janeiro, Paraná e Minas Gerais
Authors: Dias Da Silva Robson , Mello Gonçalves Gabriela
Published: October 2019

O estudo apresenta um dos pontos de mais intenso debate nos estudos regionais da economia brasileira: os efeitos da Lei Kandir sobre a arrecadação tributária de estados produtores de produtos primários destinados ao mercado mundial. O ciclo de alta dos preços internacionais dos produtos básicos, associado à busca de saldos em balança comercial, ensejou um claro processo de reprimarização da economia brasileira e aumentou a dependência de alguns territórios em relação à produção de recursos naturais. Com foco no caso de três estados da federação (Minas Gerais, Rio de Janeiro e Paraná), o estudo mostra as perdas que os três principais produtores de commodities têm tido, do ponto de vista fiscal, por ocasião da Lei Kandir e da busca de maior competitividade nacional nos mercados globais.
Sparse regularized fuzzy regression
Authors: Rapaic Danilo , Krstanovic Lidija , Ralevic Nebojsa , Obradovic Ratko , Klipa Djuro
Published: October 2019

In this work, we focus on two things: First, in addition to the data measurement uncertainty, we develop a novel probabilistic model by imposing the additive noise in the classical fuzzy regression model. We obtain the baseline LS estimation as the maximum likelihood estimation for regression parameters. Moreover, by assuming the heavy tail distribution and by introducing the Huber norm instead of square in the cost function, we obtain more general robust fuzzy M-estimator, much more suitable for modeling the outliers often present in the data sets.
Remarks on a family of complex polynomials
Authors: Andrica Dorin , Bagdasar Ovidiu
Published: October 2019

Integral formulae for the coefficients of cyclotomic and polygonal polynomials were recently obtained in [2] and [3]. In this paper, we define and study a family of polynomials depending on an integer sequence m1,?, mn,?, and on a sequence of complex numbers z1,?, zn, ? of modulus one. We investigate some particular instances such as: extended cyclotomic, extended polygonal-type, and multinomial polynomials, for which we obtain formulae for the coefficients. Some novel related integer sequences are also derived.
The inverse of a triangular matrix and several identities of the Catalan numbers
Authors: Qi Feng , Zou Qing , Guo Bai-Ni
Published: October 2019

In the paper, the authors establish two identities to express higher order derivatives and integer powers of the generating function of the Chebyshev polynomials of the second kind in terms of integer powers and higher order derivatives of the generating function of the Chebyshev polynomials of the second kind respectively, find an explicit formula and an identity for the Chebyshev polynomials of the second kind, conclude the inverse of an integer, unit, and lower triangular matrix, derive an inversion theorem, present several identities of the Catalan numbers, and give some remarks on the closely related results including connections of the Catalan numbers with the Chebyshev polynomials of the second kind, the central Delannoy numbers, and the Fibonacci polynomials respectively.
On the order of odd integers modulo 2n
Authors: Jung Soon-Mo , Nam Doyun , Rassias Michael
Published: October 2019

In this paper, we investigate the order of odd integers of the forms 2ju + 1
and 2ju+3 modulo 2n, where j is an integer with j ? 2, u is an odd positive
integer, and n is an integer with n ? j + 3.
Vertebral Fractures in Individuals With Type 2 Diabetes: More Than Skeletal Complications Alone
Authors: Koromani Fjorda , Oei Ling , Shevroja Enisa , Trajanoska Katerina , Schoufour Josje , Muka Taulant , Franco Oscar H. , Ikram M. Arfan , Zillikens M. Carola , Uitterlinden André G. , Krestin Gabriel P. , Anastassiades Tassos , Josse Robert , Kaiser Stephanie M. , Goltzman David , Lentle Brian C. , Prior Jerilynn C. , Leslie William D. , McCloskey Eugene , Lamy Olivier , Hans Didier , Oei Edwin H. , Rivadeneira Fernando
Published: October 2019

OBJECTIVE

We aimed to assess whether individuals with type 2 diabetes (T2D) have increased risk of vertebral fractures (VFs) and to estimate nonvertebral fracture and mortality risk among individuals with both prevalent T2D and VFs.

RESEARCH DESIGN AND METHODS

A systematic PubMed search was performed to identify studies that investigated the relationship between T2D and VFs. Cohorts providing individual participant data (IPD) were also included. Estimates from published summary data and IPD cohorts were pooled in a random-effects meta-analysis. Multivariate Cox regression models were used to estimate nonvertebral fracture and mortality risk among individuals with T2D and VFs.

RESULTS

Across 15 studies comprising 852,705 men and women, individuals with T2D had lower risk of prevalent (odds ratio [OR] 0.84 [95% CI 0.74–0.95]; I2 = 0.0%; Phet = 0.54) but increased risk of incident VFs (OR 1.35 [95% CI 1.27–1.44]; I2 = 0.6%; Phet = 0.43). In the IPD cohorts (N = 19,820), risk of nonvertebral fractures was higher in those with both T2D and VFs compared with those without T2D or VFs (hazard ratio [HR] 2.42 [95% CI 1.86–3.15]) or with VFs (HR 1.73 [95% CI 1.32–2.27]) or T2D (HR 1.94 [95% CI 1.46–2.59]) alone. Individuals with both T2D and VFs had increased mortality compared with individuals without T2D and VFs (HR 2.11 [95% CI 1.72–2.59]) or with VFs alone (HR 1.84 [95% CI 1.49–2.28]) and borderline increased compared with individuals with T2D alone (HR 1.23 [95% CI 0.99–1.52]).

CONCLUSIONS

Based on our findings, individuals with T2D should be systematically assessed for presence of VFs, and, as in individuals without T2D, their presence constitutes an indication to start osteoporosis treatment for the prevention of future fractures.
Economic and Clinical Burden of Nonalcoholic Steatohepatitis in Patients With Type 2 Diabetes in the U.S.
Authors: Younossi Zobair M. , Tampi Radhika P. , Racila Andrei , Qiu Ying , Burns Leah , Younossi Issah , Nader Fatema
Published: October 2019

OBJECTIVE

Nonalcoholic steatohepatitis (NASH) is a progressive form of nonalcoholic fatty liver disease (NAFLD) and is strongly associated with type 2 diabetes mellitus (T2DM). Patients with both T2DM and NASH have increased risk for adverse clinical outcomes, leading to higher risk for mortality and morbidity. We built a Markov model with 1-year cycles and 20-year horizon to estimate the economic burden of NASH with T2DM in the U.S.

RESEARCH DESIGN AND METHODS

Cohort size was determined by population size, prevalence of T2DM, and prevalence and incidence of NASH in 2017. The model includes 10 health states—NAFL, NASH fibrosis stages F0 through F3, compensated and decompensated cirrhosis, hepatocellular carcinoma, 1 year post–liver transplant, and post–liver transplant—as well as liver-related, cardiovascular, and background mortality. Transition probabilities were calculated from meta-analyses and literature. Annual costs for NASH and T2DM were taken from literature and billing codes.

RESULTS

We estimated that there were 18.2 million people in the U.S. living with T2DM and NAFLD, of which 6.4 million had NASH. Twenty-year costs for NAFLD in these patients were $55.8 billion. Over the next 20 years, NASH with T2DM will account for 65,000 transplants, 1.37 million cardiovascular-related deaths, and 812,000 liver-related deaths.

CONCLUSIONS

This model predicts significant clinical and economic burden due to NASH with T2DM over the next 20 years. In fact, this burden may be greater since we assumed conservative inputs for our model and did not increase costs or the incidence of T2DM over time. It is highly likely that interventions reducing morbidity and mortality in NASH patients with T2DM could potentially reduce this projected clinical and economic burden.
VARIASI UKURAN MESH (Al-Si) DAN KARBON TEMPURUNG KELAPA DENGAN MENGGUNAKAN POLYESTER BQTN 157 TERHADAP NILAI PENGUJIAN KEKERASAN
Authors: Purboputro Pramuko Ilmu , Awaluddin Diki
Published: October 2019

Pada penelitian ini peneliti ingin memahami dan membuat sampel kampas rem sepeda motor dengan menggunakan bahan komposit ramah lingkungan. Bahan yang digunakan dalam penelitian ini yaitu fiberglass, karbon, serbuk Al-Si variasi mesh 50, 60, 100, kalsium karbonat, barium sulfat dan resin polyester dengan katalis sebagai matriks. Kemudian di uji gesek dengan uji kering, uji air, uji air garam, uji oil dan uji minyak rem dengan beban 20 kg selama 3 jam dan di uji kekerasan menggunakan Durometer dengan standar ASTM D2240. Dari hasil uji kekerasan nilai tertinggi pada variasi Al-Si mesh 100 yaitu 92,7 ShoreD. Hasil pengujian gesek nilai keausan tertinggi pada semua kondisi dari variasi Al-Si mesh 100 yaitu 33,171 mm³/jam, 29,025 mm³/jam, 29,025 mm³/jam, 30,393 mm³/jam, 37,310 mm³/jam. Dari hasil pengujian gesek di dapat nilai koefisien gesek nilai tertinggi pada semua kondisi dari variasi Al-Si mesh 100 yaitu 0,7084, 0,6322, 0,6025, 0,6393, 0,6345. Pada foto mikro setelah uji gesek kampas rem variasi mesh 50 mengalami kegagalan bonding adhesive sedangkan variasi mesh 60, 100 dan pasaran x mengalami kegagalan bonding kohesive. Dari hasil pebahasan dapat di simpulkan besar kecil butiran Al-Si mempengaruhi nilai kekerasan, keausan dan koefisien gesek kampas rem.
SIMULASI THERMAL TRANSIENT KACA LEMBARAN TERPAPAR TEMPERATUR RADIASI DENGAN ANALISA THERMAL STRESS
Authors: Julianto Eko , Siswanto Waluyo Adi
Published: October 2019

Untuk melakukan pengujian temperatur radiasi. Peneliti menggunakan simulasi untuk mempelajari perilaku kerusakan atau keretakan kaca float lembaran menggunakan sofware Mecway 8 FEA . Dimana waktu dan suhu sekitar pada lembaran kaca float yang pertama mengalami perubahan temperatur adalah parameter yang paling utama untuk mengetahui bagian kaca yang retak. Analisa hasil simulasi dari paparan panas radiasi dan konveksi mensimulasikan thermal transient kepermukaan kaca lembaran menjadi rusak atau retak dan mengetahui perkiraan waktu sampai kaca lembaran retak dengan simulasi thermal stress. Memberikan temperatur radiasi ke permukaan lembaran kaca, diasumsikan dengan paparan temperatur dari kurang lebih 20 menit yaitu 32º sampai 150ºC dengan ketebalan kaca 4 mm menggunakan software Mecway 8 FEA. Pada proses ini hasil simulasi dan exsperiment juga akan dibahas pada batas besaran temperatur radiasi sehingga lembaran kaca retak atau thermal shock. Perbedaan temperatur dan waktu akan meningkat seiring bertambahnya temperatur radiasi pada lembaran kaca. Waktu kritis dan perbedaan termperatur sebagai nilai referensi untuk memprediksi Thermal stress dalam aplikasi software Mecway 8 Fenite element analisis.
ANALISIS TINGKAT KEKASARAN PERMUKAAN PADA HASIL PEMESINAN MESIN MILLING DENGAN VARIASI TINGGI PENCEKAMAN BENDA KERJA DAN TINGGI PEMASANGAN ENDMILL CUTTER
Authors: Zainuddin Z
Published: October 2019

Studi ini ditujukan untuk mengetahui tekstur permukaan dari proses pemesinan dengan beberapa variasi posisi. Posisi yang diuji dalam penelitian ini adalah posisi tinggi pencekaman endmill dan posisi pencekaman specimen. Menurut penelitian-penelitian yang terdahulu, variabel yang menyebabkan kekasaran permukaan adalah penggunaan variasi parameter pemesianan, jenis perlakuan pemesinan yang kurang optimal dan geometri pahat. Oleh karena itu, penelitian ini mengambil variabel perlakuan posisi dan pencekaman baik spesimen maupun pemasangan endmill untuk mengetahui kondisi paling optimal terhadap tingkat kekasaran permukaan. Hasil Penelitian ini didapatkan Tingkat kekasaran pada tinggi pencekaman endmill menunjukkan bahwa semakin mendekati flute maka akan semakin kasar karena ada rongga flute yang tidak tercekam, dan pencekaman semakin ke atas dari panjang endmill juga akan semakin kasar karena terjadi vibrasi yang besar saat proses pemakanan, rekomendasi dari penelitian ini agar mendapat nilai kekasaran yang optimal adalah memasang pahat di antara batas tengah panjangnya endmill sampai ke batas flute pada endmill.
STUDY OF ALTERNATIVE FUELS AND EFFECTS OF COMPRESSION RATIO ON THERMAL EFFICIENCY AND ENGINE POWER
Authors: Sarjito Sarjito
Published: October 2019

This paper was a case study during the sabatical program at Kingston University London in February 2007. It has been studied by team of motorsport automotive department Kingston University London and it has been elaborated as a final project on Master Program. This study takes into account some of the issues surrounding the debate about alcohol fuels in Motorsport and the wider automotive sector and is primarily concerned to add data where there seems to be little existing research since Motorsport is a secretive business. Motorsport plays an important part in the automotive industry and is a sport enjoyed worldwide. Racing practice is regarded as using the best available resources and technology as it requires optimal performance. The racing arena gives engineers the opportunity to test valuable technological solutions to prove their merits. Therefore, racing is the natural starting point for introducing new technological solutions to the public and could lead to the wholesale conversion to renewable fuels to meet our automotive energy needs. Alcohol has unique properties that make superior in many ways to ordinary gasoline. The higher knock resistance allows for higher compression ratios to be utilized resulting in higher power outputs and thermal efficiency. The efficient use of energy is of growing concern in all spheres of life and the automotive sector needs to be front runner in these efforts.
Monitoring and Controlling Electric Power Stations Using GSM Network
Authors: Ismail Goran , A. Mubdir Bilal , Majeed Asso , Al-Hindawi Asaad Mubdir Jassim
Published: October 2019

This paper introduces a system design for monitoring and controls the components of power generation station and substation with help of existing communication link based on GSM network. In this design, a selected Programmable Logic Controller (PLC) connected to the fields that needed to be monitored and continuously read changes in measurements of electrical parameters like voltage, current, bus bar circuit breakers…..etc.. These parameters have been monitored by PLC, on the base of conditions that PLC is programmed. PLC generates a text message and forward to other side; control center or mobile phone of engineer and technicians; who are responsible of monitoring. At control center, another GSM modem which has capability to connect with personal computer, receives that text massage using SMS and executes it. Software written with Vb.Net, works as Human Machine Interface (HMI) for this purpose. The system performance is acceptable in terms of errors in readings and time delay. The percentage error for the current is about 1%, and for the voltage is about 0.2%. The delivery time to receive new analog and digital inputs data is about 14.125 seconds, while the control of the circuit done after 4.68 seconds.
Effects of Additive Materials on Indirect Tensile Strength and Moisture Sensitivity of Recycled Asphalt Pavement (RAP)
Authors: Ebrahim Soz Mohammed , Kamal Karim Hardy
Published: October 2019

Using reclaimed asphalt pavement with additives as part of new road construction has economic and environmental advantages. As an attempt to preserve aggregate resources and save money, and knowing the effects of the selected additive materials, this study was done in Sulaimani City. The samples of the RAP were selected from the Sulaimani municipality stockpiles. The ignition and centrifuge testing machines were used to separate the aggregate and binder of the RAP. Based on the standard deviation of the obtained asphalt content, the blend was decided to be 40% RAP and 60% new material. The aggregate tests were conducted to evaluate the characteristics of the PAR aggregate. The performance grade test was done for the reclaimed asphalt binder. Three types of additives, which were Styrene Butadiene-Styrene (SBS), Crumb Rubber (CR), and Polypropylene (PP), mixed with the reclaimed asphalt binder with three different percentages of the binder which were 3%, 5%, and 7%. Indirect Tensile Strength (ITS) test was performed to the conditioned and unconditioned mixtures. To evaluate the effects of additives on the moisture sensitivity of the reclaimed mixtures, ITS Ratios were obtained. Most of the percentages of additives decreased the ITS of the conditioned and unconditioned samples. The only percentage of the additive material increased the ITS was 5% of PP in conditioned case. However, additives did not benefit the ITS, they benefited the ITSR greatly. The best obtained ITSR for each additive material was 7% SBS, 3% CR, and 5% PP that had 99.71%, 97.1%, and 90.7%, respectively.
URUF DAN IMPLIKASINYA TERHADAP KEDUDUKAN NAFKAH ISTRI KARIR
Authors: Alimuddin Harwis
Published: October 2019

The law should be changed because of the changes in the public's ‘urf. Changes to the law are built on the basis of benefit, needs and principles of Shari'a which always adjust to the conditions of society. In order to maintain the balance principle of the rights and obligations of a husband and wife, the rights and obligations of a husband should be adapted to the prevailing development of the ‘urf. After being adapted to the ‘urf, the results of this research indicated that the career wife’s living is not only obliged to the husband. Further more, the wife who has a career should participate in family income as a partner for her husband.
Possibilities and limitations of the key methodological approaches to the study of happiness
Authors: Trotsuk I. V. , Grebneva V. Ye.
Published: October 2019

In recent years, the issue of happiness, including the practical searches for it, has become phenomenally popular. However, this trend was set many decades ago, already in the 1970s, when the first empirical studies were conducted to reveal that the personal feeling and self-identification as happy/unhappy are related to the pursuit of pleasure (i.e. to hedonism as a lifestyle). Over the past decades, happiness has become a legitimate object of conceptual and methodological research within almost all humanities, social and even natural sciences due to the fact that searches for the definition and acquisition of happiness went far beyond the limits of fiction that has always been involved in providing people with answers to questions on what happiness is and how to find one’s place in life. As a result, today every scientific discipline should outline the contours of its own interpretation of happiness albeit not a single one, not an unambiguous one and not without intersections with other disciplines’ approaches. The article aims at systematizing methodological approaches to the sociological analysis of happiness and identification of their possibilities and limitations. The authors show that sociologists can use a huge variety of works with different conceptual and operational definitions of happiness, and many methods to assess the level of happiness and the factors determining it. The presented review is not complete or final, it only systematizes the developments in the study of happiness and identifies two promising directions for further sociological searches — the “objectivist” econometric approach (happiness indexes based on social-economic indicators) and the “subjectivist” social-psychological approach (self-assessments of happiness in public opinion polls).
Online community of Russian volunteers (on the example of social network vkontakte)
Authors: Smirnov V. A.
Published: October 2019

The article analyzes the features of the current stage of development of volunteerism in the Russian Federation. As the information base of the research data from online communities of the social network vkontakte are used. The total number of analyzed groups is 2894, the number of participants is 1446008 people. To extract data about online communities and participants, a script was written in the programming language Python3, which allowed to gather relevant information using the vkontakte API.

Based on the analysis, the author’s typology of volunteer communities is proposed in the article, including franchise groups, online service communities and direct action groups. The author analyzes the distribution of communities on the subject of their activities. The dominant positions in terms of the number of participants and the number of groups are occupied by communities based on the search for missing people. The least represented in the space of the social network vkontakte community of volunteers — animal advocates.

Based on the socio-demographic analysis of community members, the author draws conclusions about the features of their distribution in terms of age and sex. In particular, young people between the ages of 14 and 30 take the dominant position among group members. This is largely due to the underdevelopment of the mechanisms for including middle-aged and older people in volunteer activities. As for the gender of the participants, the main contingent of the communities are women, while their relationship with men changes with age.

The article presents an analysis of the participants’ value orientations. Conclusions are drawn about the domination of individual values and interests, which are based on the desire for self-development and personal growth. On the basis of this, a conclusion is drawn on the need to develop new social technologies for involving Russian citizens in the volunteer activity.

The article explores some dysfunctions in the development of volunteerism in the Russian Federation: the lack of mechanisms for involving middle-aged and older citizens, the imitative nature of many volunteer projects. Based on this, conclusions are drawn about the need to adjust the social, educational, youth policy in the field of volunteer development in Russia.
Natural Mathematics, the Fibonacci Numbers and Aesthetics in Art
Authors: Shannon Anthony G , Power Seamus A.
Published: October 2019

The Mathematics of beauty and beauty in mathematics are important ingredients in learning in the liberal arts. The Fibonacci numbers play an important and useful role in this. This paper seeks to present and illustrate a grounding of visual aesthetics in natural mathematical principles, centered upon the Fibonacci numbers. The specific natural mathematical principles investigated are the Fibonacci numbers, the Fibonacci Spiral, and the Cosmic Bud.
The Quality and Antioxidant Content of Salted Eggs Made By Addition of Bay Leave Crude Extract on the Salting Media
Authors: Agustina Kadek Karang , Mardyawati Ida Ayu Putu Aselya , Suada I Ketut
Published: October 2019

This research aims to produce salted eggs with antioxidant content from bay leave extract. The study used a completely randomized design (CRD) in which there were 3 treatments, namely, control with 0% bay leaf extract, treatment 1 with adding 25% crude extract of bay leaves, and treatment 2 with a 50% addition of crude bay leaf extract. All treatments were pressed for 14 days before testing. The parameters observed in the study were the antioxidant capacity, albumin index, yolk index, and Haugh unit. The results show that the sated eggs with the different concentration of bay leave extract contain antioxidant 4.445%, 30.853%, and 44.32% respectively, albumin index of treated eggs was lower than control, while Haugh unit of treated eggs was higher than control, and no differentiation of yolk index between the treatments. To conclude, the addition of bay leave crude extract can increase the value of salted eggs without disturbing the quality.
ISOLASI BAKTERI SELULOLITIK PENDEGRADASI SELULOSA DARI KOMPOS
Authors: Arifin Zainul , Gunam Ida Bagus Wayan , Antara Nyoman Semadi , Setiyo Yohanes
Published: October 2019

This study aimed to isolate cellulolytic bacteria that have the potential to degrade cellulose taken compost samples from Temesi and Bondowoso, this study was also conducted to determine the ability of bacteria to degrade cellulose based on Congo red test and filter paper degradation test. All isolates were tested for cellulolytic activity using soluble Carboxymethyl Cellulose (CMC). Characterization was carried out by growing selected pure isolates on CMC media and then dripping 0.1% congo red to test the cellulolytic potential (cellulolytic potential was characterized by the emergence of clear zones around the colony). The results of isolation of bacteria obtained 38 isolates, namely 26 Bondowoso sample isolates and 12 Temesi isolates that were able to grow and utilize cellulose as a carbon source. But only fourteen isolates produced clear zones in the Congo red test with diameters ranging from 1.66  cm to 6.76 cm. Six isolates that have the largest diameters clear zone, were tested for  degradation of filter paper  (Whatman no. 1). Isolates bacteria of B2S8 obtained from Bondowoso compost samples has the highest ability to degrade cellulose on Whatman paper no. 1 as much as 51.30%.

Keywords: Compost, Isolation, Screening, Cellulolytic Bacteria.
PENGARUH KONSENTRASI NATRIUM METABISULFIT DAN LAMA PERENDAMAN TERHADAP KARAKTERISTIK BUBUK BUNGA KENIKIR (Tagetes erecta L.)
Authors: Darmawan Komang Adi , Wartini Ni Made , Wrasiati Luh Putu
Published: October 2019

Marigold powder can be used as natural orange dyes extract of marigold powder contain ?-carotene. The aim of this research was to investigate the effect of sodium metabisulfite (Na2S2O5) concentration and soaking time on the characteristics of marigold flower powder and determine the best treatment of the concentration of sodium metabisulphite (Na2S2O5) and soaking time to produce powdered marigold flowers. This research used factorial randomized block design with 2 factor experiments. The first factor is the concentration of sodium metabisulfite (Na2S2O5) which consists of 3 levels: 2000, 2500, and 3000 ppm. The second factor is the soaking time which consists of 3 levels: 10, 20, and 30 minutes. The results of research showed that the treatment of sodium metabisulfite (Na2S2O5) concentration take effect on water content, total carotenoid levels, brightness (L*), yellowish level (b*), and sulfite residue levels, but no effect to the level of redness (a*). The treatment of soaking time take effect on the levels of sulfite residues but no effect on water content, total carotenoid levels, brightness level (L*), yellowish level (b*), and redness level (a*). Soaking treatment in sodium metabisulfite (Na2S2O5) solution with a concentration of 2500 ppm and soaking time of 10 minutes, is the best treatment to produce marigold flower powder with the characteristics of water content 11,40%, total carotenoid levels of 18.91%, brightness level (L*) 44.19, redness level (a*) 63.80, yellowish level (b*) 56.86, and sulfite residue levels of 182.40 ppm.

Keywords : Tagetes erecta L, sodium metabisulfite, carotenoid, color.
ANALISIS INDEKS KINERJA USAHA KECIL MENENGAH DI KOTA BOGOR
Authors: Ramdhani Faisal , Hardjomidjojo Hartrisari
Published: October 2019

Small and Medium Enterprises (SMEs) is the locomotive of economic development of Indonesia. Within the framework of the national economy, SMEs have contributed to the recruitment of labor, the increase of Gross Domestic Product (GDP) as well as the increase of export value and national investment. In the vision and mission of Bogor city government, SMEs are expected to become the economic buffer of the city of Bogor in the face of free market competition. Currently there are 13.953 SMEs in the city of Bogor. Sustainability Index based on multi dimensional scaling can be used to measure the performance status of SMEs and formulate specific strategies that need to be done to improve their competitiveness. This research was conducted from dimension setting, attribute determination, attribute review, multidimentional scaling analysis, Monte Carlo and Leverage. The value of  Stress and R2 resulted  is less than 0.25 and more than 0.80 so that the data has good of fit. The Monte Carlo analysis results for all SMEs have been valid because it has sustainability index ratio with Monte Carlo index less than 5%.  The results show that the average sustainability index for SMEs in Bogor city is 49.8, which means that the city of Bogor is in sufficient condition (index value is below 50). The result also shows that ecological and economical factors are the important factors for increasing the performance of SMEs. The simulation results show that changes in related dimensions can increase the average value of the sustainability index to above 60 (good category).

Key Words : Small and Medium Enterprises (SMEs), Sustainability Index, competitiveness, multi dimensional scaling.