bluuebunny/crossref_metadata_2025 huggingface dataset:
Spatial variation of stable isotopic composition in surface waters of the Huai River basin, China and the regional hydrological implication
Authors: Zhang Liang , Yuan Ruiqiang , Song Xianfang , Xia Jun
Published: October 2017

Oxygen (δ18O) and hydrogen (δD) stable isotopes in the surface waters of the Huai River basin were analyzed in this study. Results indicated the northern waters had higher δ18O and δD than the southern waters, the water δ18O and δD increased along the water flow directions. These variations mostly resulted from the spatial differences of precipitation and evaporation. Comparing with published different continents' river water δ18O data, this study suggests that evaporation effect is a more plausible interpretation than altitude effect as the cause of δ18O increasing from upriver to downriver waters. This region's local surface water line (LSWL, δD = 5.36δ18O − 18.39; r2 = 0.84) represents one of the first presented LSWLs in eastern China. The correlation between d-excess and δ18O demonstrates this region is dominated by the Pacific oceanic moisture masses in summer. Comparing the various LSWLs from eastern China and eastern United States river waters, this study proposes a hypothesis that the water LSWLs slopes of lower latitude regions may be less than those of higher latitude regions within similar topographic areas. This hypothesis may be tested in other geographically comparable coupled areas in the world if corresponding large-scale data can be found.
Adsorption performance of polydopamine-modified attapulgite granular adsorbent for methylene blue
Authors: Zheng Weisheng , Wang Hailing , Zhu Zhaolian , Wei Peng
Published: October 2017

Polydopamine-modified granule organo-attapulgite adsorbent (PDA-GOAT) was facilely prepared via a dip-coating approach. The samples were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Surface area and pore size were calculated from the Brunauer–Emmett–Teller method by N2 adsorption–desorption isotherm. The adsorption behaviour of methylene blue (MB) onto PDA-GOAT was systematically investigated. The experimental data revealed that the adsorption process fitted well with the pseudo-second-order kinetics equation and the adsorption isotherm fitted better with the Langmuir model. Thermodynamic analyses illustrated that MB adsorption onto PDA-GOAT was a physisorption endothermic process. Importantly, PDA-GOAT can be regenerated by NaBH4 aqueous solution. The obtained results prove that PDA-GOAT can be a superior reusable adsorbent for the removal of MB from effluent.
Modeling and Simulation of Pressure Equalization Step Between a Packed Bed and an Empty Tank in Pressure Swing Adsorption Cycles
Authors: Chahbani Mohamed Hachemi , Talmoudi R. , Abdel Jaoued Amna , Tondeur D.
Published: October 2017

Background:

It is of paramount importance to pay a great attention when modeling pressure equalization step of pressure swing adsorption cycles for its notable effect on the accurate prediction of the whole cycle performances. Studies devoted to pressure equalization between an adsorption bed and a tank have been lacking in the literature. Many factors could affect the accuracy of the dynamic simulation of pressure equalization between a bed and an empty tank.

Methods:

The method used for the equilibrium pressure evaluation has a significant impact on simulation results. The exact equilibrium pressure (Peq) obtained when connecting an adsorption column and an empty tank could only be obtained by numerical simulation given the complexity of the set of partial differential equations.

Results:

It has been shown that, with some simplifying assumptions, one can analytically determine Peq with satisfactory precision. The analytical solution proposed permits to assess rapidly the equilibrium pressure and the equilibrium mole fraction of the adsorbable species in the tank (Yeq) and without the need to resort to a cubersome modeling.

Conclusion:

Based on the comparisons presented, one can conclude that the agreement between the experimental and numerical results relative to Peq and Yeq is very satisfactory.
Sexual Misconduct on Campus: Compliance Problems with a Sexual Conduct Code for College Students and Potential Solutions
Authors: Dunn Michael E , Borjesson-Holman Wiveca , Tantleff-Dunn Stacey
Published: October 2017

Background:

The prevalence of unwanted sexual contact on college campuses is a well-documented problem. Sexual conduct codes have been adopted at most institutions, but very little empirical research has examined the content or effectiveness of these codes in relation to student behavior.

Objective:

We assessed compliance with the sexual conduct code at a large state university to evaluate the correspondence of sexual behavior and the requirements of the code.

Methods:

Two surveys were conducted to obtain information from students on their behavior in relation to each aspect of the sexual conduct code. The code at the target university requires that students verbally request and receive permission before initiating sexual conduct and eschew sexual conduct with persons who are under the influence of alcohol, prescription medications, or illegal drugs.

Results:

In both studies, majorities of sexually active men and women reported engaging in sexual conduct that violates the code, as well as having been the target of such behavior. Sexual activity under the influence of alcohol and without prior verbal consent were most prevalent. Men and women did not differ in the likelihood of violating the code or being a target of such violations.

Conclusion:

Our results identify problems in conduct codes in defining consent and sexual misconduct, and raise serious doubts about the efficacy of such conduct codes in influencing behavior or protecting students. We present potential solutions based on our results and information from conduct codes of other institutions.
Stigmatising Attitudes Towards Co-workers with HIV in the Workplace of a Metropolitan State, Southwestern Nigeria
Authors: Utuk Idongesit Godwin , Osungbade Kayode Omoniyi , Obembe Taiwo Akinyode , Adewole David Ayobami , Oladoyin Victoria Oluwabunmi
Published: October 2017

Background:

Despite demonstrating global concerns about infection in the workplace, very little research has explored how co-workers react to those living with HIV in the workplace in sub-Saharan Africa. This study aimed to assess the level of stigmatising attitude towards co-workers living with HIV in the workplace.

Methods:

The study was a descriptive cross-sectional survey involving 403 respondents. They were recruited from selected companies through a multistage sampling technique. Survey was carried out using pre-tested semi-structured questionnaires. Data were analyzed using the Statistical Package for the Social Sciences to generate frequencies, cross tabulations of variables at 5% level of significance. Logistic regression model was used to determine the predictors at 95% confidence intervals.

Results:

Mean age of respondents was 32.9 ± 9.4 years with 86.1% being females. Overall, slightly below two-third (63.0%) had good knowledge on transmission of HIV/AIDS while 218 (54.1%) respondents had a high stigmatising attitude towards co-workers with HIV in the workplace. More female respondents (69.6%) demonstrated high stigmatising attitudes towards co-workers with HIV in the workplace (p = 0.012). Female workers were twice more likely to have high stigmatising attitudes towards co-worker with HIV [OR 2.1 (95% CI: 1.13 – 3.83)].

Conclusion:

Stigma towards people living with HIV/AIDs is still very persistent in different settings. Good knowledge amongst our participants about HIV/AIDs did not translate to low stigmatising attitudes among workers. Concerted efforts and trainings on the transmission of HIV/AIDs are essential to reduce stigma that is still very prevalent in workplace settings.
Pengembangan penilaian proyek pembelajaran IPA berbasis discovery learning untuk mengukur keterampilan pemecahan masalah
Authors: Sukmasari Vidya Putri , Rosana Dadan
Published: October 2017

Penelitian ini bertujuan untuk mengembangkan instrumen penilaian proyek berbasis model discovery learning yang layak digunakan dan sebagai salah satu inovasi pengembangan penilaian proyek secara lebih oprasional. Penelitian ini merupakan penelitian pengembangan dengan mengintegrasikan model 4-D dengan model pengembangan instrumen non tes. Subjek uji coba yaitu peserta didik Kelas VIII SMP Muhammadiyah 3 Depok, Kabupaten Sleman. Data dalam penelitian ini diperoleh melalui: (1) penilaian berdasarkan masukan para ahli, untuk menentukan validitas isi instrumen; (2) hasil uji coba terbatas untuk menentukan reliabilitas instrumen, instrumen pengumpulan data berupa lembar observasi penilaian proyek untuk mengukur keterampilan pemecahan masalah. Instrumen penilaian proyek berbasis model discovery learning yang dikembangkan dinyatakan valid dan reliabel sehingga layak digunakan serta terbukti dapat digunakan untuk mengukur keterampilan pemecahan masalah peserta didik.Kata Kunci: penilaian proyek, keterampilan pemecahan masalah, discovery learning, pembelajaran IPA Developing Discovery-Learning Based Natural Sciences Learning Project Assessment to Assess Problem Solving Skill  AbstractThis research aims to develop project-based assessment instruments model discovery learning a proper use. This research is research development by integrating 4-D model with the model development of noninstrument test. The subject of the test i.e. learners Class VIII Junior High School of Muhammadiyah 3 Depok Sleman Regency. The data in this study were obtained through (1) assessment based on the input of experts, to determine the validity of the content of the instrument; (2) the limited Test Results to determine the reliability of the instrument, the instrument of data collection in the form of sheets of observation project assessment to measure problem-solving skills. The instruments of project-based assessment model of discovery learning developed declared valid and reliability so that the feasibility as well as proven can be used to measure student’s problem-solving skills.Keywords: project assessment, problem-solving skills, discovery learning, learning science
Peningkatan kreativitas siswa kelas IV SD melalui pembelajaran tematik integratif dengan pendekatan open-ended
Authors: Bernadi Resna Maulia Ayu
Published: October 2017

Penelitian ini bertujuan untuk meningkatkan kreativitas peserta didik kelas IV SD Negeri I Prapaglor, Pituruh, Purworejo melalui pembelajaran tematik integratif dengan menerapkan pendekatan open ended. Penelitian ini merupakan penelitian tindakan kelas yang dilaksanakan dalam tiga siklus. Hasil penelitian menunjukkan bahwa setelah diterapkan pendekatan open endedkreativitas peserta didik mengalami peningkatan. Peserta didik yang telah mencapai kriteria kreatif atau sangat kreatif sebanyak 12 anak (75%). Hasil tes kreativitas peserta didik mengalami peningkatan dari siklus I ke siklus II dan dari siklus II ke siklus III. Hasil tes kreativitas peserta didik yang mencapai kategori kreatif dan sangat kreatif pada siklus I sebesar 0%, siklus II 31,25%, dan siklus III 75%.Kata Kunci: kreativitas, tematik integratif, pendekatan open ended Enhancing creativity class IV SD tematik learning through integrative approach to open-endedAbstrackThis research aims at revealing the creativity of the fourth grade students of Prapaglor 1 State Elementary School, Pituruh, Purworejo throughthematic integrative teaching with the open ended approach. This research is a classroom action research conducted in three cycles. The result of the research shows that there is an improvement on the students after the open ended approach was implemented in the teaching and learning process. There are 12 students having high creativity (75%). There is enhancement on the students’ creativity from Cycle I to Cycle II and from Cycle II to Cycle III. The result of the creativity test of the students having high creativity (very creative) in Cycle I is 0%, Cycle II was 31.25%, and Cycle III is 75%.Keywords: creativity, thematic integrative, open ended approach
Web-Based Physical Activity Intervention for Latina Adolescents: Feasibility, Acceptability, and Potential Efficacy of the Ni�as Saludables Study (Preprint)
Authors: Larsen Britta , Benitez Tanya , Cano Mayra , Dunsiger Shira S , Marcus Bess H , Mendoza-Vasconez Andrea , Sallis James F , Zive Michelle
Published: October 2017

BACKGROUND

Physical activity is markedly low in Latina adolescents, yet few physical activity interventions have been attempted in this population. Web-based interventions can incorporate theory-based components, be appealing to adolescents, and have potential for low-cost dissemination.

OBJECTIVE

This study aimed to assess the feasibility, acceptability, and potential efficacy of a Web-based physical activity intervention for Latina adolescents in a single-arm pilot trial.

METHODS

A total of 21 Latina adolescents (aged 12-18 years) who could read and write in English and were underactive (<90 min/week) participated in a 12-week, theory-informed Web-based physical activity intervention. The intervention website was modified from a previous Web-based intervention for Latina adults. Web content was individually tailored based on the responses to monthly questionnaires. Feasibility was measured by recruitment, retention, and adherence/engagement, and acceptability was measured by satisfaction surveys. Physical activity was measured at baseline and follow-up (12 weeks) using the 7-day physical activity recall (PAR) interview and accelerometers.

RESULTS

Baseline activity as measured by the 7-day PAR and accelerometers was 24.7 (SD 26.11) and 24.8 (SD 38.3) min/week, respectively. At 12 weeks, 19 participants (90%, 19/21) returned. Adherence and engagement with materials were low, but 72% (15/21) of the participants indicated that they were satisfied with the intervention. Activity at 12 weeks increased by 58.8 (SD 11.33) min/week measured by the 7-day PAR (P<.001). Accelerometer-measured activity did not increase. Activities reported at follow-up were more varied than at baseline, including some activities measured poorly by accelerometers (eg, biking and swimming). Participants suggested simplifying the website and incorporating other technologies.

CONCLUSIONS

Good retention and increases in self-reported activity suggest a promising approach to delivering a physical activity intervention to Latina adolescents. Incorporating other technologies, such as smartphone apps, could make the intervention more engaging, acceptable, and effective.
Production and Application of Lactobacillus plantarum IBL-2 Bacteriocins as Meat Product Biopreservatives
Authors: Wibowo Marlia Singgih , Muzakiyah Isra , Nurhayati Betty , Padmasawitri Tjokorde Armina , Widiastuti Yantyati , Gusdinar Tutus
Published: October 2017

Biopreservation is one of the alternatives to obtain safe food products. The produced bacteriocin by Lactic Acid Bacteria (LAB) is potential as biopreservatives, which is safe for consumption, since it was a protein degradable by proteolytic enzymes. This study aimed to optimize bacteriocin production from L. plantarum IBL-2 and to evaluate the effectiveness of bacteriocins in reducing the number of total plate count and Salmonella typhimurium in ground beef. Bacteriocin was produced through fermentation of L. plantarum IBL-2, under various conditions to yield the compound with the best antimicrobial activity. The total number of bacteria in ground beef after the addition of L. plantarum IBL-2 fermentation supernatant was determined. The result was compared with the sample without preservatives (control), and sample added with commercial Nissin. All three samples of ground beef were spiked with S. typhimurium and incubated for 0, 2, 6, 8, 12, 14 days at a temperature of 4-10 ° C. Total Plate Count (TPC) method was utilized to determine the number of bacteria in the samples. The fermentation process resulted in bacteriocin with the strongest antimicrobial activity when using low molecular weight liquid medium (LMWLM), followed by a series of refining process. From day 0-14, the number of S. typhimurium, in sample added with L. plantarum IBL-2 fermentation supernatant, was lower than control and sample added with Nissin. The most optimal antimicrobial activity of bacteriocin was obtained using LMWLM as fermentation media, and using a series of refining process consist of bacteriocin supernatant evaporation, membrane ultrafiltration, and gradual fractionation using 80% ammonium sulphate. Bacteriocin from L. plantarum IBL-2 showed antimicrobial activity against S. typhimurium.
Development of Dutatani Website Using Rapid Application Development
Authors: Delima Rosa , Santosa Halim Budi , Purwadi Joko
Published: October 2017

Rapid Application Development (RAD) is a methodology used to develop software. This method is able to reduce time to develop software. This becomes consideration in order to choose the Rapid Application Development as a methodology to develop Dutatani Website. Dutatani is a portal and a part of Integrated Agriculture Information System (IAIS). IAIS is an agriculture information system that has some subsystems that are connected and linked to each other. It also has an integrated database. In particular, Dutatani is able to manage user, manage content, and manage link in the IAIS. This website will be a link to other applications in the IAIS. This article especially discusses the development of the Dutatani Website using Rapid Application Development that is implemented by combining iterative development and system prototyping. There are some phases in the development using the RAD: planning, analysis, main design specific design, implementation and testing, and integrating prototype. This system was developed by a team which consists five members. The implementation of this prototyping technique was done by dividing five people into two groups in which each group had different responsibilities to different module/functions. This website had been developed within 150 days. Thus, in implementing the RAD, it is important for the team leader to monitor continuously. Monitoring is a useful technique to ensure the productivity and performance of each members in order to gain optimal development process.
Synthesis of Fatty Acid Methyl Esters from Jatropha curcas Oil and Its Purification Using Solvent Fractionation
Authors: Wardhani Avita Kusuma , Hidayat Chusnul
Published: October 2017

Fatty acid methyl esters (FAME) are produced by transesterification. The problem in the product of transesterification is the presence of impurities such as mono-, di-, triglycerides, and free fatty acids. So that, the purification using solvent fractionation is needed to separate them from FAME. The objective of this research were to determine the effects of crude fatty acid methyl esters-to-acetone (CFAME/acetone) ratio on yield, purity, purification factor, and recovery of FAME after fractionation and to evaluate the impurities which were separated in each step of fractionation. FAME were produced from Jatropha curcas oil using Berchmans’s and Tiwari’s methods. The impurities were separated by solvent fractionation using acetone. CFAME/acetone ratios were 1, 2, 3, 4, and 5. Fractionation was done stepwise namely 21°C, 16°C, 12°C, and 5°C. The results showed that the conversion of FAME using Tiwari’s method was 1.7-fold higher than Berchmans’s method. Purification of FAME using solvent fractionation resulted that the best CFAME/acetone ratio was 1. Yield decreased 1.6-fold at CFAME/acetone ratio 4. Purity decreased 8.74% with an increase in CFAME/acetone ratio 1 to 5. Purification factor decreased 2-fold at CFAME/acetone 1 to 3. Recovery decreased 1.3-fold at CFAME/acetone ratio 1 to 4. The impurities which were separated from FAME were mono-, di-, triglycerides, and free fatty acids and the major component of impurities was triglycerides (>59%). The results indicated that solvent fractionation could be used as an alternative method for purifying FAME and further study to optimize this method was needed.
Penicillium Species Isolated From Cocoa, Coffee Beans, and Dried Cassava in Yogyakarta Indonesia and Their Ochratoxin Production
Authors: Moulia Mona Nur , Setyabudi Sigit , Salleh Baharuddin , Rahayu Endang S.
Published: October 2017

The presence of Penicillium in cocoa and coffee beans, and dried cassava are detrimental due to its ability in ochratoxin A (OTA) production which carcinogenic and mutagenic to human. Objectives of this study were to isolate and identify Penicillium from cocoa, coffee beans and dried cassava in Yogyakarta by morphological and molecular characteristics, as well as to observe the ability of these isolates in OTA production on Yeast Extract Sucrose Agar (YES) medium. In this study, morphological characteristics were mainly based on the growth of isolates on identification media, while molecular characteristics were based on the similarity of PCR products using ITS4 and ITS5 as primers. OTA was detected by ELISA and UPLC methods. The result showed that 15 of 16 representative isolates obtained during this study were identified as Penicillium citrinum, one of the representative isolate from cocoa beans was identified as Penicillium paneum. Surprisingly, 13 among 15 of the obtained P. citrinum isolates from cocoa and coffee beans were positive in the production of OTA in YES medium, at the concentration of 4.64 to 25.26 µg/g media, while OTA was not detected in YES grown media by P. paneum and two isolates of P. citrinum from dried cassava. Conclusion of this study, the most found species Penicillium in cocoa and coffee beans were belong to P. citrinum which likely have a capability in the production of OTA.
Thrombotic Microangiopathy and the Kidney
Authors: Brocklebank Vicky , Wood Katrina M. , Kavanagh David
Published: October 2017

Thrombotic microangiopathy can manifest in a diverse range of diseases and is characterized by thrombocytopenia, microangiopathic hemolytic anemia, and organ injury, including AKI. It can be associated with significant morbidity and mortality, but a systematic approach to investigation and prompt initiation of supportive management and, in some cases, effective specific treatment can result in good outcomes. This review considers the classification, pathology, epidemiology, characteristics, and pathogenesis of the thrombotic microangiopathies, and outlines a pragmatic approach to diagnosis and management.
Proveedores e industrias de destino de maíz en México
Authors: Ortiz-Rosales Miguel A. , Ramírez-Abarca Orsohe
Published: October 2017

El objetivo de este trabajo fue analizar la oferta, la demanda y las industrias de destino del maíz, desde la perspectiva de las relaciones de compra y venta que establecen los almacenes en México. Se procede con Análisis de Redes Sociales (ARS), para lo cual se utiliza Microsoft Excel para la construcción de matrices, y Ucinet 6 - NetDraw 2.097 para el análisis y representación gráfica. Los resultados muestran que en el abasto de maíz a los almacenes predominan los productores individuales como proveedores, los principales compradores son empresas nacionales y los principales destinos son las industrias de la masa y la tortilla y de alimentos balanceados.
Preservice childcare teachers' career motivations, college adjustment, and teaching efficacy
Authors: Kim Sanglim , Yang Sungeun
Published: October 2017

We investigated the effect of college adjustment and motivation for choosing a teaching career as factors that influence preservice childcare teachers' teaching efficacy. Participants were 200 preservice childcare teachers enrolled at colleges in South Korea. The results demonstrated
that college adjustment had a significant mediating effect in the relationship between the active career motivation of preservice childcare teachers and their teaching efficacy. Specifically, active career motivation was positively correlated with teaching efficacy via the process of college
life adjustment. It can be inferred that the choice of college major based on an active personal preference, compared to passive motivation, leads to better college life adjustment, which, in turn, correlates with higher efficacy in one's career path. This suggests the need to support students'
academic and socioemotional adjustment at college as well as enhancing their course satisfaction.
Organizational structure and employees' innovative behavior: The mediating role of empowerment
Authors: Rhee Jaehoon , Seog Seo Dae , Bozorov Faridun , Dedahanov Alisher Tohirovich
Published: October 2017

We examined the mediating role of empowerment in the associations among centralization, formalization, and employee innovative behavior in organizations. Respondents were 750 highly skilled full-time employees of manufacturing organizations in the Republic of Korea who completed a self-administered
survey. Structural equation modeling was used to evaluate the hypotheses of our study. The findings demonstrated that centralization and formalization were negatively related with empowerment. Empowerment was positively associated with employee innovative behavior, and played a mediating role
among centralization, formalization, and innovative behavior. We recommend that managers of organizations establish self-managed teams that are able to make decisions autonomously, and that managers use a less formalized organizational structure to enhance employee empowerment.
Is lottery playing always harmful? Development of the Lottery Playing Health Scale
Authors: Hu Yue , Wang Bin , Liu Lian , Li Gai , Huang Xiantao , Guo Dongdong
Published: October 2017

We developed a multidimensional measure of lottery playing health, simultaneously considering the positive and negative perspectives of playing the lottery. Participants were 4,521 sports lottery players. The final version of the Lottery Playing Health Scale (LPHS) comprised 17 items
divided across 5 factors: enjoyable experience, favorable socialization, rational control, negative mood, and social harm. The LPHS showed good psychometric properties, including level of fit to the data, discriminant validity, and reliability. Several lottery player characteristics (i.e.,
age, perceived risk, and urge to play) were found to be significant predictors of players' LPHS scores. This study represents an initial effort to understand the multidimensional effects of lottery playing on health.
Estudio Inferencial en el desarrollo de Competencias Científicas que orientan los docentes en Básica Primaria
Authors: Marulanda-Echeverri Alba Yuli
Published: October 2017

El propósito de la investigación es caracterizar las prácticas pedagógicas que se utilizan en el desarrollo de competencias científicas en educación básica primaria. Así mismo, surge la inquietud de crear actividades didácticas que fortalezcan las competencias científicas tendientes a mejorar el desempeño por parte de los estudiantes a través de la práctica pedagógica. El diseño de la investigación se realiza bajo el paradigma cuantitativo apoyado en análisis cualitativo, es de Campo; los datos son recopilados en forma directa a través de encuesta escala tipo Likert con preguntas dirigidas de los estándares establecidos por el Ministerio de Educación Nacional, organizadas por Competencias Genéricas, Competencias Docentes y Competencias científicas; con una fiabilidad del (0,87), y un R de (0,93). En los hallazgos, Se pudo observar en el semáforo amarillo que aún falta un cambio en la aplicación de las competencias específicas y genéricas por falta de mayor entrega de los docentes; que deberían generar aprendizajes socialmente significativos, tener dominio y destrezas para enseñar y desarrollar habilidades de pensamiento en los niños, situar su práctica pedagógica de acuerdo a las condiciones del contexto del educando.
Influencia de curso precálculo y actividades de apoyo institucional en desarrollo de competencias y creencias en matemáticas
Authors: Vergel-Ortega Mawency , Hernández Rosa Virginia , Rincón-Leal Olga Lucy
Published: October 2017

La investigación siguió un enfoque cuantitativo con apoyo del enfoque cualitativo, descriptivo, diseño cuasi experimental. En esta investigación se plantearon los objetivos: estudiar si mejoran las competencias en pensamiento variacional y didácticas de los estudiantes con la utilización de curso precálculo utilizando plataforma virtual respecto a enseñanza tradicional; examinar la influencia en las creencias sobre las matemáticas y su enseñanza; así como analizar qué tipología de alumnos obtiene mejores resultados en relación a su nivel de competencia digital. Se han obtenido las siguientes conclusiones: el grupo experimental ha obtenido una mejora estadísticamente significativa de sus competencias interpretativas y de pensamiento variacional respecto al grupo control, las creencias sobre las matemáticas mejoran en ambos grupos del postest al pretest, pero no puede atribuirse al uso de herramientas web.
Lineamientos de la enseñanza de la matemática y la formación docente
Authors: Jaimes-Duque Dany Gabriela , Rodríguez-Celis Teófilo Arturo , Aguilar-Barreto Andrea Johana
Published: October 2017

El presente artículo muestra un recorrido histórico de la enseñanza de la matemática desde los acuerdos firmados por los países miembros de la ONU (1948) hasta las políticas educativas generadas por el Ministerio de Educación de Colombia para favorecer la enseñanza de las matemáticas. Se hace revisión de las políticas generadas a partir de los resultados de las pruebas de medición realizadas periódicamente (PERCE, SERCE, TERCE, PISA, Y SABER) y las falencias encontradas en los resultados tanto de estudiantes como de docentes y propone que a través de la mejora de los procesos formativos de los docentes no solo en la formación inicial, también en la formación en ejercicio, así como el enriquecimiento en el tema pedagógico y didáctico, se logra un cambio trascendental en el actuar del docente de matemáticas.
Motivación para la “inclusión”, características y necesidades de los estudiantes y docentes en la universidad. (Aplicativo con análisis de Recibido: Abril 02 de 2015 Aceptado: Junio 10 de 2015 gráficos estadísticos)
Authors: González-Sepúlveda Ruth Mery
Published: October 2017

Actualmente existe la necesidad y preocupación por el derecho a garantizar a la  población vulnerable el acceso a una educación de calidad my al mismo tiempo, a la informaciónmy al conocimiento. No obstante,  aunque en varios países  del mundo los gobiernos han hecho grandes esfuerzos por traducir en acciones concretas el derecho a la educación y construir sistemas educativos más inclusivos; aproximadamente un porcentaje mínimo  de la población mundial presenta algún tipo de discapacidad y la tarea es integrarlas en todos los ámbitos de la vida social. 

 El Gobierno exige a las Instituciones educativas y entre ellas a las de Educación Superior, asumir nuevos retos y por  tanto “la inclusión de personas en situación de discapacidad” es uno de ellos; participar en la  construcción de  sociedades más inclusivas, justas e igualitarias, através del desarrollode modelos educativos de calidad, sensibles a la enorme diversidad con necesidades múltiples de aprendizaje. Por lo anterior, surge la inquietud de conocer estas necesidades y características específicas de los grupos de interés, percepciones, que con soportes estadísticos determinan en ellos,  interacciones de factores intervinientes que  explique tipos de innovación requerida por estas personas en situación de discapacidad y dé respuesta a sus necesidades siendo integrantes de la sociedad  Nortesantandereana. De Allí el propósito de participar en una “Inclusión” .Con propuestas educativas que orienten el desarrollo de competencias en estudiantes con alguna clase de discapacidad y cursen educación superior. 

El diseño de la investigación corresponde a una perspectiva en torno al paradigma cuantitativo con apoyo de metodología cualitativa; un enfoque multimétodo por su desarrollo como modelo operativo viable para solucionar problemas,  requerimientos o necesidades de un grupo social. La búsqueda de la información seguirá diferentes fases  resultado de análisis descriptivos mirando la realidad del objeto de estudio desde diferentes puntos de vista.  Para el análisis e interpretación de la información se utilizó herramientas de Excel, Spss. Con esta investigación  se espera participar en el inicio a la “Inclusión” funcionando como esquema mediador entre la realidad educativa y el conocimiento.
WBCs Segmentation and Identification System using PCA and PNN
Authors: Salih Thair Ali , Younus Ibrahim Mohammed
Published: October 2017

Numerous diseases can be diagnosed based on the number of cells for each class of White Blood cells (WBCs) in the blood, therefore extracting information about that is considered very important for hematologists. the types of WBCs are Neutrophil, Eosinophil, Basophil, Monocyte and Lymphocyte; Each one of these classes is different from the other in the size and the shape of nucleus. This paper aimed to present automatic medical diagnostic system has the ability to segment the WBC from other components in microscopic blood images (95.65% accuracy rate of segmentation process) and then identify each type of WBCs using Principle Component Analyses (PCA) which is used for feature extraction operation then these extracted features are applied to the Probabilistic Neural Network (PNN) to classify the extracted features to the five classes of WBCs (94% accuracy rate of identification process). This system is implemented under the MATLAB® (version R2012b) platform.
Estrés y estilos de afrontamiento de las enfermeras de un hospital en Veracruz / Stress and confronting styles of the nurses of a hospital in Veracruz
Authors: León Noris Martha Lilia , López González Javier , Posadas Tello Mayra Hellen , Gutiérrez Serrano Leticia , Sarmiento Vega E. Salvador
Published: October 2017

Hoy en día el estrés se ha convertido en un problema de salud para los individuos por diversas situaciones como la inseguridad, la economía personal, los divorcios y, sobre todo, el entorno laboral. Uno de estos sectores laborales es el hospitalario donde las necesidades de la sociedad por problemas de enfermedades han llevado a un incremento de pacientes en cuidados intensivos, propiciando que muchos profesionistas del sector salud tengan que afrontar diversos problemas para su solución. Por ello, el objetivo de este estudio fue determinar el estrés y los estilos de afrontamiento del personal de enfermería de cuidados intensivos de un hospital en Veracruz Puerto. La metodología aplicada fue cuantitativa, descriptiva, transversal y prospectivo. La población fue de cinco enfermeros (15.2%) y 28 enfermeras (84.8%), que participaron con previo consentimiento, sumando un total de 33 enfermeros de los tres turnos. Los instrumentos aplicados fueron una entrevista y la prueba de Perfil del Estrés de Nowack. Los resultados mostraron que 21 enfermeros (2 enfermeros y 19 enfermeras), reportaron percepción moderada de estrés y el resto baja. En estilos de afrontamiento, 16 enfermeros (4 hombres y 12 mujeres) usaron moderadamente la valoración positiva ante un problema presentado. En la entrevista, aproximadamente 60% del personal (3 hombres y 17 mujeres) manifestaron que el mayor problema laboral es la falta de insumos; seis trabajadores con una antigüedad menor a cinco años, presentaron mayor percepción de estrés. Por otro lado, en cuanto al género y estado civil se resalta que las enfermeras y los enfermeros que tienen de dos a tres hijos su estrés es moderado, no así con los que tienen solo uno o ninguno. Se denota también que las mujeres presentaron un estrés mayor que los hombres. Por otra parte, los turnos laborables de la población encuestada reflejan que 11 del turno matutino y 8 del turno vespertino evidencian estrés moderado. Con base en el perfil de estrés, se concluye que el estrés en el hospital estudiado es moderado y en el caso de los estilos de afrontamiento se observaron respuestas adecuadas en soluciones positivas ante una situación laboral estresante.
Väitöskirja kielitiedon opettamisesta
Authors: Tarnanen Mirja
Published: October 2017

Arvioitu teos:

Kaisu Rättyä: Kielitiedon didaktiikkaa. Kielentäminen ja visualisointi sanaluokkien ja lauseenjäsenten opetusmenetelminä. Kasvatustieteellisiä tutkimuksia 1. Helsinki: Helsingin yliopisto 2017. 208 s.

isbn 978-051-51-2860-7.
Responsiivisten vuorojen kielioppia
Authors: Niemi Jarkko
Published: October 2017

Arvioitu teos:

Sandra A. Thompson, Barbara A. Fox & Elizabeth Couper-Kuhlen: Grammar in everyday talk. Building responsive actions. Studies in Interactional Sociolinguistics 31. Cambridge: Cambridge University Press 2015. 341 s. isbn 978-1-107-03102-9.
Kielitiedon didaktiikkaa: Kielentäminen ja visualisointi sanaluokkien ja lauseenjäsenten opetusmenetelminä
Authors: Rättyä Kaisu
Published: October 2017

Kaisu Rättyän kasvatustieteen alaan kuuluva väitöskirja tarkastettiin Helsingin yliopistossa keskiviikkona 4. tammikuuta 2017. Vastaväittäjänä toimi professori Mirja Tarnanen Jyväskylän yliopistosta ja kustoksena professori Liisa Tainio.

Kaisu Rättyä: Kielitiedon didaktiikkaa. Kielentäminen ja visualisointi sanaluokkien ja lauseenjäsenten opetusmenetelminä. Helsinki: Helsingin yliopisto 2017.

Artikkeliväitöskirjan yhteenveto-osa on luettavissa osoitteessa https://helda.helsinki.fi/handle/10138/170150
«El universo dramático de Rojas Zorrilla», de Rafael González Cañal (ed.)
Authors: González Ladrón de Guevara Cristina
Published: October 2017

Reseña del libro El universo dramático de Rojas Zorrilla, de Rafael González Cañal (ed.)
EKSTRAKSI ALUMINIUM DARI TANAH LEMPUNG GAMBUT SEBAGAI KOAGULAN CAIR
Authors: Darnas Yeggi
Published: October 2017

ABSTRAKAluminium adalah bahan utama yang terkandung dalam koagulan yang umum digunakan dalam proses koagulasi. Aluminium merupakan kandungan elemen ketiga terbesar yang terdapat pada lapisan kulit bumi, yang terdapat dalam mineral, bebatuan dan tanah liat, seperti tanah lempung gambut yang mengandung garam aluminium, telah dapat dijadikan koagulan bantu. Pada penelitian ini dilakukan pengembangan dengan mengekstraksi aluminium yang terkandung dalam tanah lempung gambut yang mengandung 18,78% Al2O3 dijadikan kogulan pengganti (PAC) untuk menurunkan zat organik alam pada air gambut. Hal yang ingin dicapai dari penelitian ini adalah dihasilkannya koagulan cair dari tanah lempung gambut yang ada di Indonesia. Koagulan cair diekstraksi dari tanah lempung gambut dari Kalimantan Selatan dengan menggunakan pelarut asam sulfat (H2SO4). Untuk mendapatkan Al2O3 dari tanah lempung gambut tersebut, tanah dikalsinasi dan diekstraksi. Proses pengaktifan Aluminium dari tanah dipengaruhi oleh ukuran butiran tanah, temperatur kalsinasi dan waktu kalsinasi. Untuk proses leaching dipengaruhi konsentrasi dan jumlah H2SO4 dalam kondisi mendidih.Kata kunci: asam sulfat, ekstraksi, kalsinasi, koagulan cair, tanah lempung gambut. ABSTRACTAluminum is the primary material contained in commonly used coagulant in the coagulation process. Aluminum is the third largest content of elements found in the earth's crust in the form of minerals, rocks and clay. Peat loam soil is one of the class that contains of aluminum salts and can be used as coagulant aids. In this research, further development by extracting aluminum contained in peat clay. In which the aluminum in the form of 18.78% Al2O3 on clay peat coagulant used as a substitute for the (PAC). The aim of this research was the production of liquid coagulant of clay peat in Indonesia. This liquid coagulant extracted from peat loam soil of South Kalimantan using sulfuric acid solvent (H2SO4) with a concentration of 40%. To obtain Al2O3 from the peat loam soil, the soil had to be calcinated and extracted. The aluminum activating processes of soil was influenced by soil particle size, temperature and duration of calcination. Meanwhile the leaching process was affected by the amount and concentration of H2SO4 in boiling conditions.Keywords: calcinations, extraction, liquid coagulant, sulfuric acid, the clay peat
SATUAN TIMBULAN DAN KOMPOSISI SAMPAH INDUSTRI KOTA PADANG
Authors: Ruslinda Yenni
Published: October 2017

ABSTRAKDalam perencanaan dan pengembangan sistem pengelolaan sampah suatu kota, diperlukan data timbulan dan komposisi sampah dari berbagai sumber sampah. Penelitian ini bertujuan untuk menentukan timbulan dan komposisi sampah industri Kota Padang berdasarkan SNI 19-3964-1994. Dari penelitian diperoleh rata-rata sampah industri Kota Padang sebesar 5,057 kg/orang/hari (0,164 kg/m2/hari) dalam satuan berat atau 6,569 liter/orang/hari (0,441 liter/m2/hari) dalam satuan volume. Berdasarkan kategori industri (jumlah karyawan), timbulan sampah industri besar 9,606 liter/orang/hari, timbulan sampah industri sedang 5,644 liter/orang/hari, dan timbulan sampah industri kecil 4,457 liter/orang/hari. Produksi sampah mengalami pengurangan pada akhir minggu yaitu hari Jumat sampai hari Minggu karena waktu kerja lebih singkat dari hari biasanya. Komposisi sampah industri Kota Padang didominasi oleh sampah organik (79,31%) yang terdiri atas sampah makanan (9,90%), kertas (20,06%), plastik (18,86%), tekstil (8,69%), karet (1,62%), sampah halaman (0,54%), kayu (14,18%), dan kulit (5,47%), sedangkan sampah anorganik (20,69%) terdiri dari kaca (0,28%), kaleng (1,36%), logam (0,12%), dan lain-lain (serbuk gergaji, busa) sebesar 18,93%. Kajian awal pengolahan yang diusulkan untuk sampah industri berdasarkan data timbulan dan komposisi adalah daur ulang untuk sampah kertas dan plastik, dan reuse untuk sampah lain-lain (campuran tanah dan serbuk gergaji).Kata kunci: sampah industri, timbulan sampah, komposisi sampah ABSTRACTTo plan and develop a solid waste management system, some data are needed such as generation and composition of solid waste from several sources. The aim of this research was to determine the generated solid wastes and their composition from industrial wastes based on SNI 19-3964-1994. The researchs results shows that average waste generation for industrial solid waste in Padang city was 5,057 kg/person/day (0,164 kg/m2/day) in weight unit, or 6,569 liter/person/day (0,441 liter/m2/day) in volume unit. Based on industry category (number of employees), the generation of solid waste from large scale industries, medium scale industries, and small scale industries were 9,606 liter/person/day, 5,644 liter/person/day, and 4,457 liter/person/day consecutively. Waste productions were decreased at the end of the week (Friday to Sunday) due to shorter working time. The composition of the industrial solid waste was dominated by organic waste (79,31%) which consists of food waste 9,90%, paper waste 20,06%, plastics waste 18,86%, textiles waste 8,69%, rubber waste 1,62%, yard waste 0,54%, wood waste 14,18%, and leather waste 5,47%, while the 20,69% inorganic waste consists of glass waste 0,28%, tin 1,36%, metal 0,12%, and others (mixture of soil, sawdust) 18.93%. Preliminary assessment for the proposed processing industrial waste based on data of solid waste generation and composition were recycling for paper and plastic wastes, and reuse for other wastes (mixture of soil and sawdust).Keywords: industrial waste, waste generation, waste composition
PENYISIHAN KALIUM DARI LIMBAH CAIR PERSAWAHAN DENGAN METODE MULTI SOIL LAYERING (MSL)
Authors: Ihsan Taufiq , Indah Shinta , Helard Denny
Published: October 2017

Metode Multi Soil Layering (MSL) telah diujicobakan untuk menyisihkan kalium pada limbah cair persawahan.Lokasi pengambilan sampel berada di daerah Tunggang, Kelurahan Pasar Ambacang, Kecamatan Pauh, KotaPadang. Hasil analisis karakteristik limbah cair tersebut menunjukkan bahwa konsentrasi melebihi standarkonsentrasi kalium pada air. Penelitian ini menggunakan 2 buah reaktor berbahan fiberglass, berbentuktrapesium untuk sisi tegaknya, dengan dimensi panjang dan lebar alas 37 cm, panjang dan lebar sisi atas 44 cmdan tinggi 60 cm, serta lapisan aerob berupa batuan kerikil berdiameter 3-5 mm. Kedua reaktor dibedakan atasmaterial organik dalam campuran tanah pada lapisan anaerob, dimana reaktor 1 terdiri dari campuran tanahandisol dan arang, sedangkan reaktor 2 terdiri dari campuran tanah andisol dengan serbuk gergaji. Limbahcair ini dialirkan pada variasi konsentrasi antara 1,048 6,237 mg/l, serta pada Hydraulic Loading Rate (HLR)dengan variasi 1.000, 2.000, dan 4.000 l/m2hari. Hasil penelitian menunjukkan bahwa kedua reaktor mampumenyisihkan kalium mencapai 100% baik pada reaktor 1, maupun pada reaktor 2. Variasi material organikdalam campuran tanah pada lapisan anaerob, variasi konsentrasi influen, dan variasi HLR berpengaruh padapenyisihan kalium. Efisiensi penyisihan kalium didapatkan lebih tinggi pada reaktor 2 pada variasi konsentrasiinfluen terkecil, dengan pengaliran limbah cair pada HLR 1000 l/m2hari. Secara umum MSL dapatdiaplikasikan pada pengolahan limbah cair persawahan.Kata Kunci : Limbah cair persawahan, MSL, kalium
SATUAN TIMBULAN DAN KOMPOSISI SAMPAH DOMESTIK KABUPATEN TANAH DATAR
Authors: Dewilda Yommi , Darnas Yeggi
Published: October 2017

Penelitian ini bertujuan untuk mendapatkan data timbulan dan komposisi sampah domestik di Kabupaten Tanah Datar serta dapat membandingkan perbedaan timbulan dan komposisi sampah yang dihasilkan berdasarkan tingkat pendapatan masyarakat (High income, Medium income dan Low income). Data timbulan dan komposisi sampah diperlukan dalam perencanaan dan pengembangan sistem pengelolaan sampah. Sampling timbulan dan jumlah sampling dilakukan berdasarkan SNI 19-3964-1994. Hasil penelitian timbulan sampah domestik dalam satuan berat 0,232 kg/o/h dan dalam satuan volume 3,646 l/o/h. Berdasarkan tingkat pendapatan dalam satuan berat High Income (HI) 0,308 kg/o/h, Medium Income (MI) 0,198 kg/o/h dan Low Income (LI) 0,190 kg/o/h dalam satuan volume HI 4,269 l/o/h, MI 3,835 l/o/h dan LI 2,835 l/o/h. Timbulan sampah yang dihasilkan penduduk dengan High Incame lebih besar dibandingkan dengan penduduk dengan pendapatan Medium Income dan Low Income. Komposisi sampah domestik untuk sampah basah 75,5%; sampah plastik 16,6%; sampah kertas 5,3%; sampah tekstil 0,8%; sampah kayu 0,3%; sampah kaca 0,7%; sampah logam ferrous 0,2%; sampah logam non ferrous 0,1%; dan sampah lain-lain 0,5%.Kata kunci: sampah domestik, komposisi sampah, timbulan Sampah
PREDIKSI TINGKAT EMISI GAS KARBON DIOKSIDA (CO2) DARI KEGIATAN TRANSPORTASI AKIBAT BEROPERASINYA RUMAH SAKIT PENDIDIKAN DI KAMPUS UNIVERSITAS ANDALAS LIMAU MANIS
Authors: Goembira Fadjar , Surianti Irma , Ihsan Taufiq
Published: October 2017

Penelitian ini dilaksanakan untuk memprediksi pengaruh beroperasinya Rumah Sakit Pendidikan (RSP) di Kampus Universitas Andalas (Unand) Limau Manis terhadap emisi dan dispersi CO2 dari aktivitas transportasi, serta dampak lain terhadap tingkat pelayanan ruas jalan. Perhitungan volume kendaraan dilakukan di jalan-jalan yang direncanakan akan menjadi akses ke RSP Unand, yaitu Jalan Utama Gerbang Depan, Jalan Utama Gerbang Samping, dan Jalan Lingkar Selatan Unand dengan metode survei pencacahan lalu lintas. Perhitungan dispersi CO2 dilakukan menggunakan software Caline4. Hasil analisis menunjukkan bahwa volume kendaraan terbesar terdapat di Jalan Utama Gerbang Depan sebesar 1.708 smp/jam, diikuti oleh Jalan Lingkar Selatan sebesar 266 smp/jam, dan Jalan Utama Gerbang Samping sebesar 157 smp/jam. Beroperasinya RSP Unand diprediksi meningkatkan emisi CO2 dari aktivitas transportasi di Jalan Utama Gerbang Depan, Jalan Utama Gerbang Samping, dan Jalan Lingkar Selatan sebesar 76.403,77 mg/m.jam, 7.356,61 mg/m.jam, dan 11.123,31 mg/m.jam, dan diperkirakan akan terdispersi ke arah timur laut. Diperkirakan akan terjadi kenaikan konsentrasi CO2 ambien di kawasan kampus hingga 6,5 ppm, serta derajat kejenuhan ruas jalan naik hingga 0,25. Pengoptimalan Jalan Utama Gerbang Samping sebagai jalan akses utama ke RSP Unand diperkirakan dapat mereduksi emisi CO2 dari aktivitas transportasi dan menurunkan derajat kejenuhan jalan di Jalan Utama Gerbang Depan Sebesar 15.449 mg/m.jam dan 0,05, serta menurunkan konsentrasi CO2 ambien hingga 1,5 ppm.Kata kunci: Laju emisi CO2, dispersi CO2, Transportasi, RSP Unand