bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation and ion sensing property of the self-assembled microgels by QCM
Authors: Cao Zheng , Chen Yuyuan , Zhang Qianpeng , Xia Yanping , Liu Gang , Wu Dun , Ma Wenzhong , Cheng Junfeng , Liu Chunlin
Published: April 2018

The polyanion polystyrene sulfonate (PSS), the polycation poly (allylamine hydrochloride) (PAH), and the anionic poly (N-isopropylacrylamide-co-acrylic acid) [P(NIPAM-co-AA)] microgels were self-assembled onto the polyethylene imine (PEI) adsorbed gold surfaces of quartz crystal microbalance (QCM) because of the electrostatic attractions. The interactions of various metal particles including Ca2+, Bi3+, Cu2+, Zn2+, Ni2+, Sn2+, Co2+, and Cd2+with the obtained PEI/PSS/PAH/microgel layer in aqueous solutions were evaluated by QCM. The PEI/PSS/PAH/Microgel covered QCM sensor demonstrates the lowest detection limit of 0.1 ppm in aqueous solutions and the obviously linear connection between the frequency response and Ni2+concentration from 0.1 to 20 ppm, which is due to the complexation of Ni2+with the carboxyl groups of microgels. Atomic force microscopy (AFM) was used to reveal the morphology and stability of the self-assembled polyelectrolyte/microgel layer before and after adsorbing heavy metal ions. These self-assembled materials of polyelectrolyte/microgel layer will be helpful for manufacturing ion-selective materials for separation and identification purposes.
PERBANDINGAN PEMAKAIAN BAHAN BAKAR MINYAK ANTARA KENDARAAN RODA DUA MANUAL DAN MATIC
Authors: Ayatullah Ayatullah , Anggraini Renni , Saleh Sofyan M.
Published: April 2018

Ownership of motorcycles as an alternative mode of choice is an affordable and economical increase along with the convenience offered by many dealers. However, there is no precise model to describe Vehicle operational cost (BOK) information of motorcycles based on the use of fuel oil. The purpose of this study is to identify the effect of the speed of two-wheeled vehicles to the consumption of fuel oil based on the type of motorcycle (manual or automatic), determine the appropriate model and as reference data for transportation feasibility studies especially for motorcycle. The research conducted on the main road of Banda Aceh City with five different mean speed to reach 50 km distance. The result analysis is done by using SPSS program with linear or nonlinear regression. Model of the influence of the speed of two-wheeled vehicles to the consumption of fuel oil (BBM) based on the type of motorcycle for manual Y = 0,598 + 0,003X, for automatic that is Y = 0,427 + 0,099X-0,004X2 + 0,00003750X3. The result shows that the manual saw a tendency of linear increase for the use of fuel oil for each average speed. Motorcycle automatic is an upside trend that the greater the speed, the smaller the use of oil fuel volume, especially at the speed of 40 km/hour and 50 km/hour seen a significant decrease and increased at speeds above 50 km/hour. This study can be a recommendation to choose an efficient motor vehicle from BOK based on the use of fuel oil.
SISTEM JARINGAN DISTRIBUSI AIR BERSIH PDAM TIRTA TAWAR KABUPATEN ACEH TENGAH
Authors: Zamzami Zamzami , Azmeri Azmeri , Syamsidik Syamsidik
Published: April 2018

The provision of clean water in Takengon City, Aceh Tengah Regency is provided by PDAM Tirta Tawar, one of which is through the water network of Oregon Mendale Water Treatment Plant (IPA). However, a preliminary survey at the Oregon Mendale IPA source suggested inadequate water for the community. The aim of this research is to know the factors that must be fulfilled so that a clean water network system can run smoothly. This includes water flow, pressure and flows continuity, maximum daily factor (Fmax) and real peak factor (Fpeak) of the existing network. This study is also to understand the clean water distribution network in the Oregon Mendale IPA resource area. This research uses a descriptive method and field observation. This study suggests the following: the average water consumption is 0,426 m3/customer/day, the maximum water pressure is 1.517 m and the continuity of flow is 6 hours every day. The maximum daily factor value (Fmax) in Kecamatan Kebayakan is 1.13-1.39 and the peak hour factor (Fpeak) is 1.13-1.41. These results suggested that the existing Oregon Mendale IPA is not running optimally.
MODEL UTILITAS PEMILIHAN MODA ANGKUTAN LAUT KE SABANG DAN SEBALIKNYA
Authors: Nursyah Mahlil , Isya Muhammad , Anggraini Renni
Published: April 2018

Sabang Island is a prospective tourist destination for generating regional and national income. The city of In terms of the number of lodging and visitor, Sabang is very much changed every year. The number of tourists both Domestic and Foreign has steadily increased since 2011. In 2014 the number of tourists reached 299,881 visitors and in 2015 the number of tourists reached 366,195 visitors. At present, to get to Sabang the visitors must use a boat. Currently, only two boat providers are available. One boat provider is managed by the government (KMP BRR) and another one is by private companies (KM Express Bahari). Each provider has its own services characteristics offered to prospective passengers. Therefore, in this research, we want to know the factors that influence the passenger selection between KMP BRR and KM Express Bahari. The used model is in the form of mathematical transformation which is usually called as Binomial Logit Model. This model using the dependent variable (y) is the provider name and the variable (x) of 6 variables, namely: (x2) Age, (x3) Occupation, (x5) Income, (x6), Reason for Selection Mode, and (x8) Schedule Selected. The results are presented and discussed in this paper.
Pengembangan Kompetensi Profesional Guru dalam Menghadapi Sertifikasi
Authors: Cahyana Ade
Published: April 2018

Certification of teacher have been accounted for as one of the education core reforms to improve teacher professionalism. The release of the Act No. 14/ 2006 for Teacher and Lecturer (atÂ higher education) is noticeable to be a historical tombstone which sets teacher and lecturer as profession as well as doctor, engineer or others. This will change the public perception to teacher to become more positive, to build up the teacher self-confident, and to magnetize the interest of those first quality candidates to turn out to be teachers, and to give the public trust back to school as an educational institution. It isÂ highly recommended that the enhancement of teacher professional capacity to be integrated with the instructional activities implemented at schools, which, on one hand are capable of improving their quality of teaching as teachers, on the other hand capable of giving them the opportunities to improve their professional capacity while toting-up their cummulative credits mandatory for teacher certification.Â ABSTRAKSertifikasi guru dinilai sebagai salah satu kebijakan reformasi pendidikan untuk meningkatkan profesionalisme guru. Keluarnya Undang-Undang Nomor 14/2006 tentang Guru dan Dosen adalah merupakan tonggak sejarah tentang bagaimana guru dan dosen diakui sejajar sebagai pekerja profesi sebagaimana pula dokter, insinyur, atau profesi lainnya. Hal ini akan mengubah opini publik terhadap guru menjadi semakin positif, selain juga akan meningkatkan kepercayaan diri mereka, juga akan menarik minat orang-orang yang potensial dan berkualitas untuk menjadi guru, serta mengembalikan kepercayaan masyarakat kepada sekolah sebagai lembaga pendidikan yang berwibawa. Berdasarkan elaborasi aspek aspek profesi guru, sangat disarankan bahwa peningkatan kemampuan profesional guru merupakan kegiatan yang terintegrasi dengan kegiatan pembelajaran di sekolah, satu sisi mampu meningkatkan kualitas mengajar mereka sebagai guru, di sisi lain dapat memberi peluang bagi mereka meningkatkan kemampuan profesional sekaligus menambah kredit akumulatif mereka untuk kepentingan sertifikasi.
Penuntasan Wajib Belajar 12 Tahun di Provinsi DKI Jakarta
Authors: Husin Muhamad
Published: April 2018

Program nine years of compulsory education in Indonesia started launched in 1994 and finished in the year targeted 2008. However, in practice still have a lot of obstacles, among others, is the cost factor, the means of schooling, and the circumstances that require students to work, so that the target of completing the nine-year compulsory education as a whole have not been met. Special Province of DKI Jakarta program compulsory education of 9-year, has been successfully completed. Gross Enrollment Rate (GER) Junior High School for DKI Jakarta province in 2004 has reached 102.86%, while for senior high school by 81.41%. Based on these facts, it should provincial DKI Jakarta began improving education quality by improving citizens 12 years of mandatory programs. This is in accordance with the development of Jakarta as a city service that is parallel to the major cities the other in Asia, which requires human resources and strong excel in the service industry. In order for completing compulsory education reached 12 years, still required additional budget from the state budget, budget and community participation and the business world. Financing programs compulsory education to 12-year, should be directed to the management and supervision of financial resources and improving the quality of education.
Belajar dari Iran: Dialektika Agama dan Politik Pasca Khomeini
Authors: Rochmat Saefur
Published: April 2018

Ethesami and Abrahamian named Iran Pst Khomeini as the Second Republic with a different reason. While Halliday name it with post-achundism. This paper is conduxted to show dialectic of religion and politics that goes rationally, so it can be used as the reflectionfor Moeslem in Indonesia. This paper used a multidimensional historical approach in order to get a complete view. This approach is expected to accomodate both of Enthesami view which focus on economic aspectsm and Abrahamian view which focus on cultural aspects, also Halliday view which saw the involvement of clerics in politics. The modification of Islamic system of government of Iran post Khomeini can not be separated from the basics of the changes that have been placed by Khomeini.Â ABSTRAKEhthesami dan Abrahamian menamakan Iran Pasca Khomeini sebagai the Second Republic dengan alasan yang berbeda. Sedangkan Halliday menamainya dengan post-akhundism. Tulisan ini ingin menampilkan dialektika agama dan politik yang berlangsung secara rasional, agar bisa dijadikan cermin bagi umat Islam di Indonesia. Tulisan ini menggunakan pendekatan sejarah multidimensional agar didapat pandangan yang lebih utuh. Pendekatan ini diharapkan dapat menampung baik pandangan Ehthesami yang lebih menekankan pada aspek ekonomi, dan pandangan Abrahamian yang lebih menekankan pada aspek budaya, maupun pandangan Halliday yang melihat keterlibatan ulama dalam politik. Modifikasi sistem pemerintahan Islam Iran pasca Khomeini tidak dapat dilepaskan dari dasar dasar perubahan yang telah diletakkan oleh Khomeini.
Second language writing instruction: A recent practice in Indonesia
Authors: Hapsari Elsa Widya , Sukavatee, P.hD. Pornpimol
Published: April 2018

Today, a majority of people appear to agree that with the rapid development of English, writing skills cannot be isolated as a standout amongst the most critical skills ((Ali & Hasanah, 2014; Asrifan, 2015). Mustafa and Samad (2015, p. 32) identified two roles of writing for English learners. To start with, it promotes the learnersâ€™ thinking skills, manages their ideas, and enhances their ability in concluding, analyzing and criticizing. Also, it encourages learning, thinking and reflecting on their ability in English. Besides, H Douglas Brown (2007) emphasized that writing is an ability that cannot be produced naturally. Writing is often viewed as a result of the thinking, drafting and revising process that requires particular skills.
Correlation Analyses of Herbage Yield and Quality Components in Certain Sorghum × Sudangrass (Sorghum bicolor L.×Sorghumsudanense Staph.) Hybrid Cultivars
Authors: Kızıl Aydemir Serap , Turhal Kutalmış
Published: April 2018

The purpose of this research study was to evaluate phenotypic correlation between yield, quality and certain yield components, and to determine the direct and indirect effects of 13 different components on yield and quality in sorghum×sudangrass hybrids. The research was conducted in the trial area of the Bilecik Seyh Edebali University Faculty of Agriculture and Natural Sciences in Bilecik, Turkey, in the 2015 crop year. The randomized complete block design with 4 replications was used. In the study, Aneto and Teide sorghum×sudangrass hybrid varieties belonging to Fito Seed Company and Gözde 80, Leoti, Nes, Rox and Early Sumac sorghum×sudangrass hybrid varieties belonging to Mediterranean Agricultural Research Institute were used as the materials. Relationships between ADF (Acid Detergent Fiber) and NDF (Neutral Detergent Fiber) ratios, RFV (Relative Feed Value) and ME (Metabolic Energy) values and characters were investigated in the study, in addition to plant height, panicle height, leaf ratio, stem ratio, panicle ratio, green grass yield, hay yield and crude protein yields of sorghum×sudangrass hybrid varieties. Results show that the Teide variety showed the highest performance in terms of herbage yield, crude protein ratio, ADF, NDF, RFV and ME, while the lowest yields were obtained from Rox and Early Sumac. Crude protein ratio was found to significantly correlate with leaf ratio, ADF, NDF, RFV and ME similarly, leaf ratio correlated with ADF and NDF; ADF with NDF; RFV with leaf ratio, ADF and NDF; and ME with leaf ratio, ADF, NDF and RFV.
Semi-Arid Plantation by Anatolian Black Pine and Its Effects on Soil Erosion and Soil Properties
Authors: Hacisalihoglu Sezgin
Published: April 2018

In this study, the effects of Anatolian Black pine [(Pinus nigra Arn. subsp. pallasiana (Lamb.) Holmboe] plantation on hydro-physical soil properties and soil loss were investigated. This study was carried out on the afforestation field of Anatolian Black Pine in the Gölbaşı district of Ankara province, which is included in the arid and semi-arid regions. Totally 48 soil sample in two soil depth level (0-20cm, 20-50cm) were collected from forest (36 soil sample) and barren (control) area (12 soil sample). Hydro-physically important soil properties were analysed [Sand (%), Silt (%), Clay (%), Organic Matter (%), pH, Field Capacity (%), Wilting Point (%), Saturation (%), Available Water Holding Capacity (cm/cm) Saturated Hydraulic Conductivity (cm/hr), Bulk Density (gr/cm3)]. And soil loss in a unit area by using ABAG (Allgemeine Boden Abtrags Gleichung) model was estimated. Soil properties and soil loss amount relations among the land use group were determined. Topsoil (0-20cm) and subsoil (20-50cm) properties except subsoil organic matter were significantly affected by land use group. Finally, Significant changes were found for annual soil loss amounts in a unit area. Avarage annual soil loss in planted area was found approximately 5.5 times less than barren area at 0-50 cm soil depth. Vegetation factor (C) which is one of the most important components of the soil loss equation, has been significantly affected by afforestation in a short period of 40 years and thus it was a variable to reduce to soil loss.
PERMAINAN TRADISIONAL DHAKONAN MENCEGAH PROGRESIFITAS TINGKAT DEMENSIA PADA LANSIA
Authors: Lathifah Mita Nur , Haryanto Joni , Fauziningtyas Rista
Published: April 2018

One of the elderly problem is dementia, which can interfere daily activity. One of the safetreatment for elderly with dementia is reminiscence therapy with dhakonan traditional games. Thepurpose of this study is explain the effect of dhakonan traditional games on dementia level in theelderly.The design of this study was quasy-experiment design. The population was elderly withdementia in Desa Wedoro Kecamatan Waru Kabupaten Sidoarjo. The total sample were 20respondents who appropriate to inclusion criteria. The sampling was simple random sampling. Theindependent variable was dhakonan traditional games, the dependent variable were cognitivefunction, depression, and dementia level. Data were collected using quissionaires of Mini MentalState Examination (MMSE), Geriatric Depression Scale (GDS), dan Functional AssessmentStaging Tool (FAST). Data analysis were Wilcoxon Sign Rank Test and Mann Whitney Test withsignificance level of α<0,05.Based on Wilcoxon Sign Rank Test found that p<0,05 for cognitive function, depression level,and dementia level in treatment group (cognitive function, p= 0,005; depression level, p= 0,005;dementia level, p= 0,014), it means the dhakonan traditional games had an effect to the dementialevel in the elderly.The conclusions of this study was the dhakonan traditional games significantly increasedcognitive function, decreased depression level and prevent progressifity of dementia level. Thefuture studies can add the respondents and behavioral changes in elderly with dementia.
HUBUNGAN PENGETAHUAN IBU DENGAN PEMBERIAN ASI EKSKLUSIF USIA > 6-12 BULAN DI KECAMATAN TALANGO KABUPATEN SUMENEP
Authors: Sumarni Sri , Oktavianisya Nelyta
Published: April 2018

The first and main food for babies is breast milk (ASI). Breast milk contains the most completenutritional composition and ideal for the growth and development of infants during the first 6months. The percentage of coverage of exclusive breastfeeding in Sumenep in 2011-2013decreased but increased in 2014 (45.5%) but has yet to reach the target (80%). Coverage rate ofexclusive breastfeeding in the District Talango any decline of the Year The year 2012-2014 is stillfar from the target attainment (80%). This study aims to determine the relationship betweenknowledge of mothers exclusively breastfeeding infants aged> 6-12 months.This research is analytic survey with cross sectional approach. The number of samples in thisstudy were as many as 38 nursing mothers who have infants aged> 6-12 months in the workingarea of Puskesmas (Health Center) Talango sub-district Talango taken using proportionate randomsampling technique. Collecting data through interviews using a questionnaire. The statistical testused to analyze the relationship between variables using chi square.The results showed that most respondents (55.3%) had good knowledge and 60.5% ofrespondents who breastfed exclusively. The results of data analysis showed a significantrelationship between knowledge and exclusive breastfeeding (p = 0.028).Efforts to improve the implementation of exclusive breastfeeding for infants aged> 6-12months through empowerment to health workers, such as by an increase in personnel and skills inorder to increase the use of breast milk.
Inteligencia empresarial adaptativa y su aplicación predictiva sobre patrones taxonómicos de deserción
Authors: Roldán Marcelo Fabio
Published: April 2018

Las variables que surgen de las bases de datos de una Universidad Nacional de Argentina, favorecen el análisis y aplicación de una metodología de Inteligencia de Negocio Adaptiva, mediante la cual, aplicando los filtros adecuados de manera metodológica, como se expone en el presente trabajo, permitirán encontrar los alumnos en riesgo de desertar y realizar un trabajo preventivo sobre ellos. Existen datos socio-psicométricos, económicos y culturales, además de elementos físicos que han de ser tomados en consideración relacionándolos con la terminalidad de estudios de los sujetos evaluados. Surge a partir de allí, un modelo predictivo de aprendizaje que clasifica las causalidades de deserción. Finalmente, se puede explotar este conocimiento para desarrollar la aplicación en cualquier lenguaje de programación, de manera que aproveche tal conocimiento, con uso en nuevos sujetos y sus datos. En virtud de ello, se exponen las principales ventajas obtenidas de las capacidades predictivas sobre los datos del caso.
Acciones y herramientas de software para implementar entornos de inclusión educativa en Colombia
Authors: Bustamante Juan S. , Mejía Carolina
Published: April 2018

Una educación inclusiva promueve el acceso equitativo y la permanencia de los estudiantes con el fin de garantizar igualdad de oportunidades para todos. Las implementaciones pueden estar basadas tanto en  estudios como en prácticas empíricas, y se enfocan principalmente desde tres aspectos: lo físico, lo cognitivo y lo social. Es así, como se hace relevante identificar y analizar casos exitosos y mejores prácticas realizadas por las instituciones educativas colombianas. De igual manera, dados los avances tecnológicos, es imperativo lograr una fusión entre la tecnología y la inclusión con el fin de llegar al objetivo deseado.
Estrategia mediada por TIC para la enseñanza de la tecnología y la informática
Authors: Echavarría Jiménez Jaime Andrés , Baldiris Navarro Silvia Margarita , Vélez Saldarriaga Gloria Liliana
Published: April 2018

El Ministerio de Educación Nacional tiene en cuenta la cantidad de promociones al interior de la institución educativa para la medición de la eficiencia institucional. Los actuales indicadores de la Institución Educativa Padre Roberto Arroyave Vélez son negativos por el alto porcentaje de reprobación académica en los grados sextos, en áreas como informática. El paso del método monodocente al multidocentes incide considerablemente en esos indicadores. Este trabajo presenta los resultados de un estudio realizado a en la Institución sobre las incidencias de este método, en las áreas de tecnología e informática. Para lo cual se realizó una prueba piloto de una estrategia educativa basada en la implementación de las TIC, para el desarrollo del contenido temático de un periodo, en aras de comparar los índices de aprobación y reprobación con los dos años anteriores. La evaluación de esta estrategia se realizó mediante la comparación directa, usando el programa de minería de datos WEKA, que permitió analizar desde una simulación de posibles escenarios, la comparación de los resultados con los índices de los años anteriores. El resultado obtenido presentó mejoramiento grupal de los índices de promoción de estudiantes, en las áreas de tecnología e informática.
Does metacognitive knowledge mediate the relation between goal orientations and educational achievement in secondary school students?
Authors: Neuenhaus Nora , Artelt Cordula , Schneider Wolfgang , Lingel Klaus
Published: April 2018

Introduction. Student’s metacognitive knowledge as well as their goal orientations are related to educational achievement. Metacognitive knowledge enables the learner to choose learning strategies in such a way that they are situation-appropriate as well as efficient. It develops in conjunction with domain-related learning activities, which in turn are influenced by students’ goal orientations. This leads to the assumption that goal orientations differentially influence the development of metacognitive knowledge, and that the latter mediates the effect of goal orientations on educational achievement.Method. Respective hypotheses were tested using data from a longitudinal study with 928 German secondary school students in which goal orientations were assessed in grade five and metacognitive knowledge and educational achievement in the domains of reading and English as a foreign language (EFL) were repeatedly tested from grade five to seven.Results. Findings indicate that learning goal orientation had a positive impact on metacognitive knowledge and on achievement in reading, which was mediated by metacognitive knowledge. The opposite was found for performance goal orientation, which focuses on the demonstration of competence and the intention to outperform others.Conclusion. Learning goal orientation not only affects achievement directly but also indirectly through a positive effect on metacognitive knowledge. Performance orientation does not have a positive effect on the relation between metacognitive knowledge and performance.
THE ROLE OF QUALITY IN THE PROCESS OF IMPROVING COMPETITIVENESS OF DOMESTIC ECONOMY
Authors: Đorđević Dejan , Ćoćkalo Dragan , Bešić Cariša , Bogetić Srdjan
Published: April 2018

International business practice has proved that there is a correlation between the improvement of the quality of business and establishment and development of the competitive capabilities of business organizations. Application and development of the concept of quality creates the preconditions to improve the other factors of competitiveness, such as productivity and innovation. Domestic companies for many years have a problems with the competitive ability on international level. Insufficient investment in qualiz, low productivity and inadequate investments in recearsch and development activity has resulted poor competitive position of the domestic economy. Improving the quality of business in domestic enterprises will affect the improvement of the competitiveness of enterprises. The application of modern methods and management techniques should enable improvement of productivity, as well as the quality of business.
Determination of the Size and Depth of Craters on the Moon
Authors: Grubelnik Vladimir , Marhl Marko , Repnik Robert
Published: April 2018

Experimental work in the research of astronomical phenomena is often difficult or even impossible because of long-lasting processes or too distant objects and correspondingly too expensive equipment. In this paper, we present an example of observation of the Moon, which is our nearest astronomic object and therefore does not require professional astronomic equipment for observation. We focus on the observation of craters on the Moon, determining their lateral size and depth on the basis of photographs and simple calculations. The fieldwork with students of junior grade school education was performed within the framework of the optional subject Astronomy. An analysis of the results of the students’ experimental work, as well as of curricula on various levels of education, led us to conclusion that this kind of experimental work is suitable for incorporation in secondary school physics education. With some mathematical simplifications, however, the treatment of the topic can also be appropriate in primary school. Such experimental work enables students to gain specific natural science and mathematical competences that are also required for the study of other natural  phenomena.
Professionalising Physics Teachers in Doing Experimental Work
Authors: Haagen-Schützenhöfer Claudia , Joham Birgit
Published: April 2018

It is commonly agreed that experiments play a central role in teaching and learning physics. Recently, Inquiry-Based Learning (IBL) has been introduced into science teaching in many countries, thus giving another boostfor experiments. From a didactical point of view, experiments can serve a number of different goals in teaching and learning physics. First of all, experiments can support learners in understanding some of the centralconcepts of physics. Besides this function of “learning physics”, empirical evidence shows that experimental work in general has a high potential for promoting “learning about science” and finally “doing science”. Promoting aspects of how science works has become important, as the ideas of scientific literacy and competence orientation have been established as central educational goals in many national education systems. However, empirical studies show that the reality in schools does not match these expectations. Conventional physics classes still aim only at the mastery of content, and experiments that cognitively activate students and address issues related to the Nature of Science (NOS) have not been implemented extensively. The reasons for this can be found in teachers’ attitudes and beliefs, as well as in their PCK concerning experiments and scientific knowledge production. In past decades in Austria, teacher education did not focus a great deal on the didactical aspects of experiments or their integration into physics classes in order to promote aspects of scientific literacy and competence orientation. Furthermore, there is a lack of high quality continuing professional development courses that promote the concepts of Inquiry-Based Learning (IBL) in combination with relevant ideas of NOS. The present study examines inservice teachers’ beliefs about the function of experiments in science teaching and their meaningful integration into science classes. In the form of case studies, we follow the professional development of teachers in this field during continuing teacher training.
Taxonomy of Teaching Methods and Teaching Forms for Youth in Non-Formal Education in the National Youth Council of Slovenia
Authors: Miloševič Zupančič Vesna
Published: April 2018

Research from the field of non-formal education (NFE) in youth work emphasises the central role of experiential learning and learning in groups. The present paper aims to research teaching methods and teaching formsin NFE in youth work. The research sought to answer the following research questions: ‘What teaching forms can be found in NFE for young people in youth councils on a national level in Slovenia?’ and ‘What teachingmethods can be found in NFE for young people in youth councils on a national level in Slovenia?’ Data was collected using semi-structured interviews; the instrument was a list of questions. The empirical research was conducted in July 2016 with six interviewees. The results indicate that learning in selected NFE in the National Youth Council of Slovenia (MSS) is participatory, interactive, inclusive and student-focused; with central concepts of experiential learning and learning in groups. The key teaching form is learning in groups. However, individual work, work in pairs, programmed instruction and direct instruction are also present. The central and omnipresent teaching method is experiential learning. Problem-based learning, case-study method, action learning, and project-based learning are intertwined and connected to the experiential learning method. Other methods include verbal-textual methods, illustrative-demonstration methods, experimental methods, peer learning, and support methods. The conclusions are applicative in the didactic spectrum of NFE in youthwork and in the wider didactic spectrum of adult learning. Implications for further research include teaching methods and forms in NFE inside the wider youth sector, internationally comparative and through quantitativeresearch.
Teaching and Learning Vocabulary: What English Language Learners Perceive to Be Effective and Ineffective Strategies
Authors: Tamimi Sa’d Seyyed Hatam , Rajabi Fereshte
Published: April 2018

Vocabulary constitutes an essential part of every language-learning endeavour and deserves scholarly attention. The objective of the present study was three-fold: 1) exploring Iranian English language learners’Vocabulary Learning Strategies (VLSs), 2) examining language learners’ perceptions of vocabulary learning, and 3) exploring Iranian English language teachers’ Vocabulary Teaching Strategies (VTSs). In total, 145  intermediate learners of English as a foreign language, consisting of 114 males and 31 females aged 15 to 27, participated in the study. The triangulated data were collected using three tools: questionnaires, interviews, and class observations. Sixty-seven learners (31 females and 36 males) filled out a 56-statement questionnaire, adopted and adapted from Takač (2008) and translated into Persian. The questionnaire comprised two parts, enquiring as to the learners’ VLSs and the teachers’ VTSs. The findings indicated that females and males differed significantly in their reported VLSs and their teachers’ use of various VTSs. Additionally, 78 learners were interviewed as to their perceptions of effective and ineffective VLSs as well as VTSs. The findings revealed that the most effective VLSs were reported to be: a) reciting, repeating and listening to words, b) using words, and c) memorising words while the most effective VTSs revolved around: a) explanation, b) repetition, and c) dictation. The observations also confirmed the findings obtained via the questionnaire and interviews. In general, the findings are indicative of the limited repertoire of vocabulary acquisition techniques employed by Iranian EFL learners, hence the need for strategy training in how to acquire vocabulary.
Studi Deskriptif mengenai Grit pada Mahasiswa Fakultas Psikologi Universitas Kristen Maranatha Bandung
Authors: Vivekananda Ni Luh Ayu
Published: April 2018

Penelitian dilaksanakan untuk mengetahui gambaran Grit mahasiswa Fakultas Psikologi di Universitas Kristen Maranatha Bandung. Alat ukur pada penelitian ini menggunakan konsep Grit dari Angela Lee Duckworth (2007) yang telah diujikan sebelumnya oleh Edwina & Vivekananda (2017). Alat ukur berupa kuesioner-self report yang menggunakan skala Likert dan berjumlah 18 item, dengan mengukur kedua aspek dari Grit yaitu konsistensi minat (Passion) dan ketekunan usaha (Perseverance) validitas r=0,300-0,654 dan reliabilitas r=0,888. Teknik analisis data menggunakan distribusi frekuensi. Responden pada penelitian ini adalah 423 orang mahasiswa Fakultas Psikologi Universitas Kristen Maranatha Bandung. Hasil penelitian ini menunjukan bahwa 93,4% mahasiswa memiliki derajat Grit yang tinggi. Hal ini menunjukan bahwa mahasiswa memiliki konsistensi minat (Passion) dan ketekunan usaha (Perseverance) yang tinggi dalam mencapai tujuannya menjadi seorang Sarjana Psikologi. Disarankan bagi peneliti lain untuk meneliti kaitan Grit dengan faktor-faktor yang dapat memengaruhi Grit, yaitu faktor internal ini terdiri dari Interest, Practice, Purpose dan Hope. Serta faktor eksternal yang dapat mempengaruhi Grit seperti Parenting, The Playing Field of Grit dan Culture of Grit. serta mengkaitkan dengan variabel lain seperti Happiness, Self Regulation, Risk Taking dan Humility. Bagi mahasiswa, hasil penelitian ini dapat digunakan sebagai salah satu bahan pertimbangan bahwa mereka memiliki modal dasar untuk dapat mencapai tujuannya sebagai seorang Sarjana Psikologi dan dalam merencanakan pengembangan diri. Selain itu bagi pengelola Fakultas Psikologi Universitas Kristen Maranatha, dapat dijadikan dasar acuan untuk menentukan modul pengembangan yang sesuai dengan trait dan kebutuhan mahasiswa.
Efecto de los biofertilizantes sobre la asimilación de nitrógeno por el cultivo de trigo
Authors: Grageda-Cabrera Oscar Arath , González-Figueroa Sarahyt Santamaría , Vera-Nuñez José Antonio , Aguirre-Medina Juan Francisco , Peña-Cabriales Juan José
Published: April 2018

Los cultivos absorben en promedio de 20 a 40% del fertilizante aplicado, el porcentaje restante se pierde del sistema agrícola por diversos mecanismos, ocasionando cuantiosas pérdidas económicas y contaminación ambiental. Entre los beneficios del uso de microorganismos en la agricultura está su capacidad para mejorar la asimilación de nutrimentos. Se realizó un experimento en campo cuyo objetivo fue evaluar el efecto de la inoculación de biofertilizantes bacterianos y fúngicos sobre la eficiencia de asimilación del fertilizante nitrogenado en el cultivo de trigo. El diseño experimental fue de bloques completos al azar con cuatro repeticiones y nueve tratamientos de biofertilización empleando la técnica de dilución isotópica de 15N para determinar el N en la planta derivado del fertilizante y el porcentaje de utilización del fertilizante N. La fertilización química produjo los mayores rendimientos de grano y asegura su calidad. La inoculación del trigo con HVA incrementó significativamente el rendimiento de grano hasta en 1 291 kg ha-1, la cantidad de N en la planta proveniente del fertilizante hasta en 15 kg y la eficiencia de utilización del fertilizante nitrogenado hasta en 11% en comparación con el testigo sin inocular. Hubo diferencias significativas en la interacción planta-microorganismo en la producción de biomasa y asimilación de N.
Respuesta de genotipos de avena a la infección por Puccinia graminis f. sp. avenae en Valles Altos de México
Authors: Gerardo Leyva-Mir Santos , Villaseñor-Mir Héctor Eduardo , Camacho-Tapia Moisés , Ávila-Quezada Graciela Dolores , García-León Elizabeth , Tovar-Pedraza Juan Manuel
Published: April 2018

La roya del tallo de la avena, causada por Puccinia graminis f. sp. avenae, ha aumentado su incidencia y severidad significativamente en parcelas de temporal distribuidas en Valles Altos de México. El objetivo de este estudio fue de determinar la respuesta de 28 genotipos de avena de temporal a la infección por Puccinia graminis f. sp. avenae bajo condiciones de campo, durante los ciclos primavera-verano 2013 y 2014. Se utilizó un diseño experimental completamente al azar con cuatro repeticiones, y un arreglo de tratamientos en parcelas divididas. Las parcelas grandes fueron cinco fechas de siembra y las parcelas chicas estuvieron constituidas por los 28 genotipos de avena. La variable respuesta fue el porcentaje de daño de roya del tallo en cada uno de los genotipos, desde que se inició la enfermedad hasta el término de cada ciclo del cultivo. La variedad de avena más resistente a la roya del tallo fue Diamante R-31, seguida por Nodaway, AB177 y Teporaca. Mientras que las variedades más susceptibles fueron Guelatao, Tulancingo y Ópalo. Asimismo, las fechas de siembra 1 (23 de junio) y 2 (30 de junio) presentaron los menores porcentajes de severidad de la enfermedad. Adicionalmente, se observó que el rendimiento de grano de avena disminuye severamente en presencia de la roya del tallo y sin ser controlada con algún fungicida.
Efecto de número de tallos en la producción y calidad de jitomate cultivado en invernadero
Authors: Mendoza-Pérez Cándido , Ramírez-Ayala Carlos , Martínez-Ruiz Antonio , Rubiños-Panta Juan Enrique , Trejo Carlos , Vargas-Orozco Alejandra Gabriela
Published: April 2018

El jitomate es una de las hortalizas de mayor consumo en todo el mundo, su producción, calidad y tamaño es afectada por condiciones climáticas, necesidades hídricas y manejo de número de tallos. El objetivo de este trabajo fue evaluar la producción de jitomate y algunas variables de calidad, en tres condiciones de manejo, en función de número de tallos. El trabajo se realizó en un invernadero del Colegio de Postgraduados. Se trasplantó el 20 de abril de 2015 con tezontle como sustrato, bajo riego por goteo. El experimento consistió en tres tratamientos (T1), con uno (T1), dos (T2) y tres (T3) tallos por planta. Se realizaron muestreos en el 1er, 5to y 10mo racimo de la planta, para determinar de los frutos el rendimiento, tamaño, firmeza, solidos solubles totales, acidez titulable, pH y cantidad de vitamina C. Se obtuvo rendimiento de 6.55, 5.91 y 5.45 kg pl-1 para T1, T2 y T3. T1 fue mejor con 69, 23, 8 y 1% de tamaño grande, mediano, chico y muy pequeño por planta. En las variables de calidad, los sólidos solubles totales y el pH aumentaron a medida que se incrementó el número de tallos por planta comparado con la firmeza que disminuyó. Se encontró mayor contenido de vitamina C en el 10mo racimo del T3. Se observó que al aumentar el número de tallos se incrementó la cantidad de frutos por planta, pero el tamaño y la firmeza disminuyeron por lo tanto se recomienda utilizar el T1 para frutos de exportación y T2 para consumo interno.
Influencia de rizobacterias en la producción y calidad nutracéutica de tomate bajo condiciones de invernadero
Authors: González Rodríguez Gabriela , Espinosa Palomeque Bernardo , Cano Ríos Pedro , Leos Escobedo Lucio , Sánchez Galván Homero , Sáenz Mata Jorge
Published: April 2018

Una alternativa en la agricultura orgánica es la utilización de biofertilizantes base rizobacterias promotoras del crecimiento vegetal y abonos orgánicos “plant growth promoting rhizobacteria (PGPR) por sus siglas en inglés”. El objetivo fue evaluar el efecto de la inoculación de PGPR (Bacillus sp., Aeromonas sp. y Pseudomonas lini), utilizando dos sustratos: S1= compost+arena de río+perlita, y S2= arena de río y como testigos ambos sustratos sin PGPR (ocho tratamientos), sobre el rendimiento y calidad de frutos de tomate producidos en invernadero. El diseño experimental utilizado fue completamente al azar con tres repeticiones en un arreglo factorial (2×4), donde los factores A y B fueron: a) sustratos y b) PGPR. Los resultados indican que el sustrato S1 incremento los contenidos de SST, licopeno, azúcares totales, ácido ascórbico y el porcentaje de ácido cítrico en frutos de tomate. La inoculación de la cepa Bacillus sp., produjo los mayores contenidos de SST, licopeno y ácido ascórbico en frutos de tomate. En base al conjunto de respuestas en los frutos de tomate desarrollados con diferentes sustratos y PGPR, el mejor tratamiento fue el T1 (Bacillus sp. + S1) el cual incremento un 17.54, 8.77, 17.34, 31.31 y 11.52%, el rendimiento, los contenidos de SST, licopeno, azúcares reductores y ácido ascórbico, respectivamente, en relación con el resto de los tratamientos. Por lo tanto, la cepa Bacillus sp. y el sustrato base compost podrían ser una alternativa, debido que mejoran la calidad nutracéutica de frutos, sin disminuir el rendimiento de tomate en invernadero.
Variabilidad genética en algunas especies cultivadas y silvestres de amaranto
Authors: Ruiz Hernández Víctor Cuauhtémoc , Legaría Solano Juan Porfirio , Sahagún Castellanos Jaime , De la O Olan Micaela
Published: April 2018

El género Amaranthus se distribuye ampliamente en América. El estudio de la diversidad genética dentro y entre las poblaciones y especies de Amaranthus es importante para planear estrategias de su conservación y la continuidad. En el presente estudio, se evaluó mediante marcadores moleculares tipo ISSR 2 especies cultivadas (A. hypochondriacus y A. cruentus) y 5 especies silvestres (A. hybridus, A. retroflexus, A. powellii, A. palmeri y A. spinosus). Se analizaron 154 loci, encontrándose que el porcentaje de polimorfismo promedio para los iniciadores fue de 97.9%. Los amarantos cultivados mostraron estar genéticamente muy relacionados entre sí y con sus posibles progenitores silvestres (A. hybridus y A. powellii). Dentro de los materiales silvestres los que estuvieron más cercanos fueron A. hybridus, A. powellii y A. retroflexus, mientras que A. spinosus y A. palmeri fueron los más alejados. La mayor parte de la diversidad genética detectable se encontró entre las especies y las poblaciones, mientras que la menor parte estuvo dentro de las mismas.
Efectividad biológica del nematicida Nemmax en el cultivo del cafeto (Coffea arabica L.)
Authors: Cepeda-Siller Melchor , Cerna-Chávez Ernesto , Ochoa-Fuentes Yisa María , Dávila Medina Miriam Desireé , Garrido Cruz Fabiola , Hernández Juárez Agustín
Published: April 2018

Los nematodos fitoparásitos constituyen uno de los principales patógenos que afectan el cultivo del cafeto (Coffea arabica L.), reduciendo el rendimiento entre 10 y 70 %. El objetivo de este estudio, fue evaluar la efectividad biológica del nematicida de origen biológico Nemmax, para el control de Meloidogyne incognita, Pratylenchus spp. y Dorylaimus spp., asociados a este cultivo en Motozintla, Chiapas, en el año 2014. Se realizaron dos muestreos poblacionales, uno previo a la aplicación de tratamientos, y otro a los 120 días posteriores, obteniendo el número de nematodos en 100 g de suelo. Los tratamientos Nemmax (a dosis de 2, 4 y 6 L ha con 3 aplicaciones), Nemacur 400 CE (Fenamifos) (3 L ha-1 una aplicación) y un testigo absoluto. En el control de Meloidogyne incognita, se observó diferencia significativa en el tratamiento 5 (133.2), que representa al testigo, ya que se observó un incremento en la población de los nematodos, comparado con los demás tratamientos, los cuales fueron iguales estadísticamente, presentándose las mismas diferencias para Pratylenchus spp. Con el nematodo Dorylaimus spp., se presentaron diferencias estadísticas, siendo el tratamiento 5 (249.6) con mayor diferencia, 4 (18), 1 (8.2), 2 (6) y 3 (3.4). El tratamiento 3, de Nemmax a dosis de 6 L ha-1 fue el que presentó la menor población de los nematodos filiformes del género Meloidogyne incognita, Pratylenchus spp. y Dorylaimus spp.
Jaguar: cultivar de chile habanero para México
Authors: Ramírez Meraz Moisés , Arcos Cavazos Gerardo , Méndez Aguilar Reinaldo
Published: April 2018

La siembra de chile habanero (Capsicum chinense Jacq.) en México se encuentra concentrada en alrededor de 80% en la península de Yucatán. Aproximadamente 50% del área dedicada a esta hortaliza se siembra con materiales criollos, el resto con variedades de polinización libre y un área mínima con híbridos de reciente formación, desarrollados por empresas transnacionales, lo que propicia fuga de divisas que afecta la economía del país. Por lo antes mencionado, el objetivo de este trabajo fue obtener una variedad de chile habanero con alto rendimiento y calidad de fruto para las regiones productoras de México, como resultado, el INIFAP desarrolló la variedad de chile habanero Jaguar en el año 2009, la cual inicia su floración y cosecha de 70-85 y 115-120 días después de la siembra, respectivamente. Produce frutos uniformes, de color verde esmeralda que se tornan anaranjado brillante en madurez total, muy atractivos para mercado en ambos estados de madurez. Esta variedad alcanza rendimientos de alrededor de 15 t ha-1 en condiciones de buen temporal y de 30 t ha-1 a cielo abierto con tecnología de media a alta. Mientras que en condiciones de agricultura protegida es de hasta 43 t ha-1.
Sugar, Salt and Fat Consumption of Population in Batur Kidul Village Getasan Subdistrict Semarang Regency
Authors: Triandhini R.L.N.K. Retno , Rahardjo Monika , Putranti Magdalena
Published: April 2018

The prevalence of non-contagious diseases such as diabetes mellitus, hypertension and obesity are increasing from year to year. Unhealthy diet such as excessive consumption of sugar, salt and fat is one of the factors causing these diseases. The result of data analysis shown that 21.5% of respondents had consumed sugar exceeding the recommendation of Permenkes no 30 year 2013 (>50 gram/day), 73.7% of respondents consume salt exceeding the recommendation of Permenkes no 30 year 2013 (5 gram/day), and as many as 7% of respondents consume fat exceeds the recommendation Permenkes no 30 year 2013 (> 67% gram /day). The highest consumption of salt and fat occurs in the age group of 56 - 65 years, while the highest sugar consumption occurs in the age group 40 - 45 years. Based on sex, women tends to consume sugar, salt and fat higher than men. Consumption of salt and sugar of respondents is high. This needs special attention because excessive salt and sugar consumption can cause non-contagious diseases such as hypertension and Diabetes Mellitus type 2, whose prevalence in Indonesia is increasing.
Pengaruh Faktor Eksposi dengan Ketebalan Objek pada Pemeriksaan Foto Thorax Terhadap Gambaran Radiografi
Authors: Sari Ayu Wita , Fransiska Enggel
Published: April 2018

Telah dilakukan penelitian tentang hubungan faktor exspos dengan ketebalan objek pada pemeriksaan foto thorax terhadap hasil gambaran radiografi menggunakan pesawat sinar-X. Pemberian faktor ekspos yang tidak sesuai dapat menyebabkan radiograf tidak dapat memberikan informasi secara optimal, faktor ekspos yang terlalu tinggi dapat menyebabkan hasil radiografi hitam (gelap) begitu juga pemberian faktor ekspos yang terlalu rendah akan mengakibatkan hasil menjadi putih (terang). Perbedaan pemberian faktor ekspos pada setiap pengambilan foto radiografi dipengaruhi oleh ketebalan yang dimiliki tiap objek. Semakin tebal objek yang akan difoto maka faktor ekspos yang digunakan akan semakin tinggi. Untuk mendapatkan hasil radiografi yang bagus diperlukan faktor ekspos yang tepat sehingga dapat membantu dalam mendiagnosa untuk tahap selanjutnya. Dari hasil pengamatan di lapangan didapatkan nilai untuk faktor eksposipada ketebalan objek 14cm; kV:47, mAs:7,1, t:35 ,16cm; kV:48, mAs:8, t:39 ,18cm; kV:49, mAs:9, t:45.