bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of High Salt Concentration on Ion Clustering and Transport in Polymer Solid Electrolytes: a Molecular Dynamics Study of PEO-LiTFSI
Authors: Molinari Nicola , Mailoa Jonathan P. , Kozinsky Boris
Published: May 2018

The model and analysis methods developed in this work are generally applicable to any polymer electrolyte/cation-anion combination, but we focus on the currently most prominent polymer electrolyte material system: poly(ethylene) oxide/Li- bis(trifluoromethane) sulfonamide (PEO + LiTFSI). The obtained results are surprising and challenge the conventional understanding of ionic transport in polymer electrolytes: the investigation of a technologically relevant salt concentration range (1 - 4 M) revealed the central role of the anion in coordinating and hindering Li ion movement. Our results provide insights into correlated ion dynamics, at the same time enabling rational design of better PEO-based electrolytes. In particular, we report the following novel observations. 1. Strong binding of the Li cation with the polymer competes with significant correlation of the cation with the salt anion. 2. The appearance of cation-anion clusters, especially at high concentration. 3. The asymmetry in the composition (and therefore charge) of such clusters; specifically, we find the tendency for clusters to have a higher number of anions than cations.
Non-Equilibrium Crystallization Pathways of Manganese Oxides in Aqueous Solution
Authors: Sun Wenhao , Kitchaev Daniil A. , Kramer Denis , Ceder Gerbrand
Published: May 2018

Aqueous precipitation of transition metal oxides often proceeds through non-equilibrium phases, whose appearance cannot be anticipated from traditional phase diagrams. Without a precise understanding of which metastable phases form, or their lifetimes, targeted synthesis of specific metal oxides can become a trial-and-error process. Here, we derive a new thermodynamic potential for the free-energy of a metal oxide in water, which reveals a hidden metastable energy landscape above the equilibrium Pourbaix diagram. By combining this ‘Pourbaix potential’ with classical nucleation theory, we interrogate how solution conditions can influence the multistage oxidation pathways of manganese oxides. We calculate that even within the same phase stability region of a Pourbaix diagram, subtle variations in pH and redox potential can redirect a crystallization pathway through different metastable phases. Our theoretical framework offers a predictive platform to navigate through the thermodynamic and kinetic energy landscape towards the rational synthesis of target metal oxide phases.
Miss Universo: Representaciones de El Dorado y el Traje Típico Colombiano
Authors: Piza André Leonardo Caballero
Published: May 2018

A través de los conocidos “trajes típicos” se ha representado la cultura de los países en el concurso de Miss Universo. Este artículo analiza cómo a partir de los trajes utilizados por las concursantes de Colombia, específicamente aquellos inspirados en la orfebrería precolombina, se ha hecho una construcción distinta a la difundida por los medios, que busca transmitir una imagen favorable del país. Por una parte este estudio muestra lo positivo de utilizar la transmisión de la cultura como herramienta política y publicitaria y, por otra, hace una reflexión sobre la sexualización de la cultura a través de la exhibición y cosificación del cuerpo de la mujer. La investigación usa como fuentes primarias recursos audiovisuales y recortes de prensa.
A beleza do divino: vestes como ornamento na imaginária cristã
Authors: Moreira Fuviane Galdino
Published: May 2018

As roupas das esculturas cristãs são caras aos estudos dos têxteis. Qualificados como ornamentos por Bonne (1996), os tecidos investigados aqui se conectam a traços do conceito de beleza inspirado na Antiguidade grega. Este artigo propõe uma interpretação sobre o contato entre a História da Arte Sacra e a História do Vestuário a partir da aná- lise dos modos vestimentares de duas padroeiras da América Latina: Nossa Senhora dos Anjos, da Costa Rica, e Nossa Senhora Mãe da Divina Providência, de Porto Rico. Ambas são objeto de nossa pesquisa de doutorado. A teoria desse estudo se fundamenta em obras advindas da história medieval que continuam repercutindo em períodos mais recentes.
Reflexões sobre a profissão de modelo: a categoria do exótico na moda e na Antropologia
Authors: Palmeira Lara Virgínia Saraiva
Published: May 2018

Este artigo tem por objetivo analisar como a categoria do exótico é abordada no campo da moda e nos escritos antropológicos. Inicialmente, procurou-se tratar de questões relativas à profissão de modelo, a construção histórico-social da supervalorização e da padronização corporal e, posteriormente, analisar como o exótico apareceu nesse contexto. A questão racial surgiu atrelada ao termo em evidência nos exemplos dos jovens modelos africanos presentes no campo. Assim, tal conceito nos auxilia a refletir sobre importantes relações de poder existentes nesse universo subscritas por meio da linguagem. Os dados baseiam-se em uma pesquisa etnográfica realizada durante 2012 e 2013 em uma agência de modelos na cidade de Fortaleza (CE).
Monitoramento de cor
Authors: Neder Mônica
Published: May 2018

Este artigo trata do monitoramento de cor realizado durante as semanas de moda do Rio de Janeiro e de São Paulo no período de 2013 a 2016. O objetivo era perceber congruências de cores nos lançamentos. Para tanto, foi feito um estudo bibliográfico sobre tendências e pesquisas de moda, além de coleta das cores. Devido ao alto poder de disseminação da informação na rede, as informações analisadas foram coletadas na internet. Para o registro dos dados, construímos mapas de cores que, posteriormente, foram analisados por meio de fichas visuais e escritas. Para o entendimento da repetição dos padrões coloridos ao longo do período abrangido pelo estudo, produzimos gráficos comparativos categorizados por família, luminosidade e saturação.
Fashion Victims: The Pleasures and Perils of Dress in the 19th Century
Authors: Rochedo Aline Lopes
Published: May 2018

Uma narrativa crítica sobre moda, economia, política, moral e estética que contempla produção e consumo, passado e presente, prazer e perigo. Assim é Fashion Victims: The Pleasures and Perils of Dress in the 19th Century (Vítimas da moda: os prazeres e perigos do vestuário no século XIX), exposição temporária instalada em junho de 2014 no Bata Shoe Museum (BSM), em Toronto, Canadá. Organizada por Elizabeth Semmelhack, curadora do museu, e Alison Matthews David, professora de História de Têxteis e Vestuário da The School of Fashion da Ryerson University, a mostra se encerraria em junho de 2016, mas foi estendida até abril de 2018. Graças à prorrogação, tive a oportunidade de vê-la em maio de 2017. [...]
The Interpersonal Meanings Used in the Drink Labels
Authors: Susanto Dias Andris
Published: May 2018

This research aims at describing the Interpersonal Meanings used in the drink labels. The objectives of this research are to investigate clauses and their constituents realized in the English sentences used and to map out the interpersonal meanings realized in the clauses on the drink labels. The writer used qualitative descriptive analysis to find out the characteristics of English sentences used in the drink labels. The object of the study is the sentences used in the drink labels. The unit analysis is a clause used in the drink labels. The data were collected by the use of document. To analyze the data and Method of data analysis, the writer took some steps; there are identification of 19 products of the drink labels, identification of the labels, identification of the sentences used in the drink labels, and identification of interpersonal meaning. The result shows that, the 19 drink labels have 79 clauses and each clause has different constituents there are two, three, four, five, six, seven, eight, nine, and ten constituents. The dominant constituent is nine constituents. The interpersonal meaning realized in the labels are; a) exchanging information which consists of giving information and demanding goods and services. b) Exchanging goods & services, which consist of demanding goods & services, and giving goods & services. The dominant interpersonal meaning on the drink labels is declaratives mood – giving information of exchanging information. It has 58 clauses. On this drink labels, there is no interrogative mood – demanding information of exchanging information. It is suggested that labels are good media for teaching English. By understanding the meaning of the labels, students and or readers will get the knowledge about the meaning of the clauses on the drink labels. They also will get the benefit of the drinks. The other researchers would be able to continue analyzing for the next steps using different points of view.
Repair Strategies of Teacher’s Talk in EFL Classroom
Authors: Ardini Sukma Nur
Published: May 2018

This study investigated the curiosity of how an eminent senior high teacher handled the communication in EFL classroom when he has problems in expressing ideas during the learning process where English is unlikely to be spoken than Javanese. It examined two repair strategies; repetition and self-initiated repair since these two are prominent features of daily communication mostly in the setting of English as a foreign language. It was a classroom discourse analysis study which used a descriptive qualitative approach. Numbers used in the form of percentage to support the findings. The participant of this study was an eminent teacher of a private senior high in Semarang. The learning session was video recorded then was carefully transcribed. Then, the repair strategies of the teacher’s talk were analyzed through the study. The findings revealed that self-initiated repair was used less frequently than repetition. There were 45 out of 210 utterances done for repetition (13.81%) and 16 out of 210 utterances done for self-initiated (7.61%). It was also found the combination of those two repair strategies in one utterance. The findings indicate that the effort of the teacher to build English speaking classroom atmosphere is very high even though the students were lack of motivation in speaking English. Yet, the teacher shows the repair strategy mostly in the beginning of the learning session, but he finally made it through the rest of the session. The findings may inspire those of many other English teachers, especially in Indonesia, in giving positive contribution in building EFL classroom.
Using a Teaching Media of “Homophone Stories“ to Improve Students’ Vocabulary Mastery: a Case of Seventh Grade Students at SMPN 1 Kranggan in Academic Year 2014/2015
Authors: Hidayati Nur
Published: May 2018

The objectives of the study are (1) To find out the students’ vocabulary mastery before being taught by using homophone stories, (2) To find out the students’ vocabulary mastery after being taught by using homophone stories, (3) To find out the significant difference the vocabulary mastery of the seventh grade students of SMP N 1 Kranggan before and after being taught using homophone stories. The population of the study was the seventh grade students of SMP N 1 Kranggan. The writer took class 7D as a sample of the study. The class consists of 31 students. The writer used experimental quantitative research in the study. Test as the instrument was used to collect the data. The objective of conducting try out test was to measure the validity, reliability, discrimination power, and level difficulty of the test. The data was computed and it was find out that 30 items were valid. Then, the valid items were used for the pre-test and post-test of vocabulary mastery item tests. The result of the mean score of students before being taught by using homophone stories was 56.34 and the mean score of students after being taught by using homophone stories was 77.5. The result showed that the mean score of post-test was higher than pre-test. Then, the writer calculated t-test to know whether or not there was significant difference students’ achievement between them who were taught before using homophone stories and students who were taught after using homophone stories. The result showed that t-test was higher than t-table. It was 9.19> 1.697. It means that there is significant difference between the students’ vocabulary mastery after being taught by using homophone stories and before being taught by using homophone stories. From the data above, it can be concluded that the students’ vocabulary mastery after being taught by using homophone stories was higher than the students’ vocabulary mastery before being taught by using homophone stories. The data prove that it is effective to use homophone stories as a media teaching in improving students’ vocabulary mastery.
Application of Design Sprint for Educational Purposes: a Case Study at Federal Institute of Goiás
Authors: Gomes Ferreira Vinícius , Cordeiro Maurício , Dias Canedo Edna
Published: May 2018

Design techniques focused in user are desirable for undergraduates, but there are few initiatives that address the insertion of these techniques into the curricula of Higher Education Brazilian's colleges. This article sought to develop hypotheses that would help to construct a model for insertion of learning in design-based techniques for Brazilian's academies through the use of Design Sprint adjusted for educational purposes applied as a case study at the Federal Institute of Goiás. To that end, exploratory research methodology was used. In the survey applied, 91% of students considered Design Sprint  productive in learning context and 100% of students agreed that Design Sprint can creatively solve problems. They also expressed a desire to participate in new applications of it for educational purposes. After the case study was planned, applied and validated, it is inferred that possibility of Design Sprint's insertion in curricula exists and that, in fact, such techniques add value to teaching when applied in some classes, making it dynamic and intuitive in addition to solve real problems which students are experiencing.
Factors Affecting the Implementation of Canal Blocking Development as A Fire Prevention Solution In River Village Tohor Regency
Authors: Yuliani Febri , Erlina Nova
Published: May 2018

The area of forest and burning land in Riau Province until 2016 has reached 3,218 hectares with the highest number of fires in Rokan Hilir Regency with 32 points. Other fire spots are also spread in Pelalawan, Meranti, Rokan Hulu, Bengkalis, Inhil, and Inhu districts. Meanwhile, forest fires and peat lands in the eastern coastal region also continue. Up to now, there have been 310.25 hectares of peat land already burned in Meranti Regency. To know and analyze the factors that influence the development of canal blocking as a peat land fire prevention solution in Sungai Tohor village, Kepulauan Meranti regency. The type of this research is qualitative with explorative method. In the construction of canal blocking as a peat land fire prevention solution in Sungai Tohor Village is influenced by several factors. The first is the government regulation factor, community participation in the form of participation and public awareness in the construction of canal blocking. As well as public awareness as a subject who felt the benefits of the existence of this blocking canal. Next is the local wisdom of peat communities. Which communities should maintain the sustainability of peat lands that are the source of their lives that have traditionally used them to cultivate sago.
Pengembangan Model Diklat Interaksi dan Komunikasi Anak dengan Autisme
Authors: Ikhwanudin Trisno
Published: May 2018

This research is motivated by the need for the design and implementation of training model for the development of interaction and communication of children with autism that is effective according to the needs of the institution and the field. The formulation of the problem is "what kind of training model that suits the needs of teacher competence improvement in developing interaction and communication skills of children with autism disorder?". This research uses Research and Development (R & D) model of Dugan Laird model. This research uses purposive sampling which involves all respondents of alumni of related training. Data were analyzed using t-test and qualitative analysis. The conclusions are: (1) based on the result of the test on the data of the alumni of training perception on his own competence and the implementation of the training result in their schools, the result of the test shows that the autistic training conducted in Bandung is more effective than the previous two training, Medan and Semarang training. (2) The resulting training design model is assumed to be more effective than the previous training design because it has the clarity of the program structure and its evaluation system.
Peta Konsep Mahasiswa dalam Penelitian Sastra: Studi Kasus Tahun Kademik 2013 dan 2014
Authors: Prasetyo Hazairin Eko , Prastanti Afria Dian
Published: May 2018

A preliminary observation on the students’ term papers of the English language education department of Sarjanawiyata Tamansiswa University showed that, in terms of using of concept maps, some were completed with ones and the others were not. Therefore, it was interesting to do a research on this issue. However, due to time limitation, this study focused on the term papers with concept maps and the objective of the research was to find out how students developed their concept maps. The research method was a mixed-method between quantitative and qualitative techniques. The objects of the research were the term papers on literature accomplished during the academic year 2013/2014. The quantitative technique was applied in classifying the objects according to the proportion of interest, while the qualitative technique was used to analyze the findings descriptively. The results of the research showed that 16.39% of 137 students writing term papers during the academic year analyzed literary works 91.30%  of which used concept maps. The concept maps could be classified into two groups: comprehensive and partial.
Efektivitas Pembelajaran Think-Talk-Write Terhadap Hasil Belajar Matematika Siswa Kelas VIII SMP N 9 Yogyakarta
Authors: Adi Nur Romdlon Maslahul , Harini Esti
Published: May 2018

Penelitian ini bertujuan untuk mengetahui efektivitas model Think-Talk-Write dan instruksi langsung. Populasi penelitian ini adalah semua siswa kelas VIII terdiri dari 6 kelas di SMP N 9 Yogyakarta 2014-2015. Sampel dari penelitian ini adalah 2 kelas yaitu kelas kelas eksperimen VIIIF dan VIIIE sebagai kelas kontrol. Analisis data menggunakan analisis deskriptif dan korelasi t-test. Hasil penelitian ini adalah: 1) matematika hasil eksperimen kelas belajar dalam kategori tinggi (x ̅ = 85,59), (2) matematika hasil kelas kontrol belajar dalam kategori tinggi (x ̅ = 81,61), (3) hasil penghitungan menunjukkan bahwa tobs = 4309> ttabel = 2,035. Sehingga penggunaan jenis pembelajaran kooperatif Think-Talk-Write (TTW) model memiliki lebih efektif untuk matematika hasil belajar, dibandingkan dengan penggunaan model pembelajaran konvensional dengan matematika hasil belajar.
Peningkatan Keaktifan dan Hasil Belajar IPS Melalui Model Pembelajaran Kooperatif Tipe Make A Match
Authors: Maharani Okti Desta tri , Kristin Firosalia
Published: May 2018

Tujuan penelitian ini yaitu untuk mengetahui langkah-langkah model pembelajaran kooperatif tipe Make a Match, peningkatan keaktifan serta hasil belajar siswa melalui penerapan model pembelajaran kooperatif tipe Make a Match. Ada 2 siklus, terdiri 4 tahap: perencanaan,pelaksanaan,observasi dan refleksi. Subyek penelitiannya siswa kelas V SD Negeri Jati Jajar 02 sebanyak 26 siswa. Teknik pengumpulan data menggunakan teknik tes dan nontes. Instrumen penelitian menggunakan butir-butir soal dan lembar observasi. Hasil penelitian menunjukkan peningkatan hasil belajar dan keaktifan siswa pembelajaran IPS dengan model pembelajaran kooperatif tipe Make a Match. Hasil ini dilihat melalui perbandingan antar siklus yaitu ketuntasan belajar PraSiklus 42%,skor rata-rata 71,3. Siklus I 73%,skor rata-rata naik 76,1%. Siklus II 100%,skor rata-rata 81,3. Keaktifan siswa juga mengalami peningkatan, PraSiklus 15% siswa aktif. Siklus I 73% siswa aktif. Siklus II 81% siswa sangat aktif. Dengan demikian dapat disimpulkan penerapan model pembelajaran kooperatif tipe Make a Match dapat meningkatkan hasil belajar dan keaktifan siswa.
UPAYA MENINGKATKAN KEMAMPUAN MEMBACA DALAM PELAJARAN BAHASA INGGRIS DENGAN STRATEGI CHORAL READING MELALUI POWERPOINT
Authors: Supiningsih Supiningsih
Published: May 2018

The purpose of this research are: (1) to know the implementation of choral reading strategy with variation of powerpoint learning media in English learning; (2) to know the effectiveness of applying choral reading strategy with variation of powerpoint learning media in learning English to students' reading ability. This type of research is a classroom action research consisting of 2 cycles. Subjects in the study were students of class XI majoring in Accounting, amounting to 28 people. Data collection techniques used were observation, documentation, and tests. Technique of data analysis with qualitative that is by doing record of reflection, that is thinking which arise at the time of observing and is result of process compare, linking or connecting data which is displayed with previous data.Results of Action Research This class has an increase from initial ability compared to cycle 1 that is complete students in cycle 1 amounted to 18 students or 64.28%. From the 2nd cycle results can be written the completed student is 24 students from 28 students or 85.71%. From cycle 1 to cycle 2 there is an increase of 21.43%. This proves that the use of choral reading strategy through powerpoint is very effective.
Talking Stick: Hasil Belajar IPA Dan Kemampuan Kerjasama Siswa
Authors: Sari Swastika , Wijayanti Astuti
Published: May 2018

This study aims to determine the influence of cooperative learning model type of talking stick to the results of science learning class vii students in smp n 5 banguntapan, bantul in 2016/2017 academic year in terms of cooperation ability. this study is quasi-experimental. techniques of collecting data using test techniques, questionnaires and documentation. the instrument test contains 30 multiple choice questions, and the questionnaire instrument contains 20 statements. the result, the researcher obtained fcount = 1.082 and p = 0.283, the average learning outcome was 21.75, the average questionnaire was 80.13. based on the average learning outcomes and questionnaires, then there is the influence of talking stick to the results of science learning grade vii students in terms of students' cooperation ability.
Penerapan Metode Problem Solving Untuk Meningkatkan Kreativitas Dan Prestasi Belajar Statistika
Authors: Hidayati Hidayati
Published: May 2018

The purpuse of this research is to determine the application of problem solving methods that can improve the creativity and achievvement studying statistics of science education student of FKIP UST Yogyakarta academic year. The methode of research is classroom action research consisting of four components of action that is planning, action implementation, observation and reflection. Data can be form of observation sheet, questionnaire and interview result and statistical achievement test. Quantitative data analysis technikques are calculated by descriptive statistics. The result shows 1. Student creativity increment 15.41 at cycle I and 15.71 at cycle II. Avarege percentage of pre cycle 52.90 with medium cotegory, in cycle I 68.30 with high category, and in cycle II 84.02 with high category. There was an increase in statistical achievement 25.97 in cycle I and 17.90 in cycle II. The average pre cycle score were 48.53, in cycle I 74.50 and cycle II 92.40.
MENINGKATKAN HASIL BELAJAR IPA DENGAN PENERAPAN MODEL PEMBELAJARAN JIGSAW BERBASIS KURIKULUM 2013
Authors: Aprilia Lindha Andhita , Setyaningtyas Eunice Widyanti , Slameto Slameto
Published: May 2018

Proses pembelajaran pada Kurikulum 2013 masih membutuhkan perbaikan kualitas yang ditunjukkan dari rendahnya hasil belajar siswa di salah satu SD di Salatiga. Penelitian ini bertujuan untuk meningkatkan hasil belajar siswa dengan cara menerapkan model pembelajaran Jigsaw berbasis kurikulum 2013. Jenis penelitian yang digunakan yaitu penelitian tindakan kelas melalui dua siklus pembelajaran. Setiap siklus terdiri dari 3 pertemuan. Hasil belajar sebelum diadakan tindakan pra siklus siswa yang sudah mencapai KKM dengan presentase 42,86%, sedangkan setelah dilaksanakan siklus I jumlah siswa yang sudah mencapai KKM meningkat dengan presentase 71,42% dan setelah dilaksanakan siklus II jumlah yang sudah mencapai KKM meningkat dengan presentase 85,71%. Hal tersebut membuktikkan dengan menerapkan model pembelajaran Jigsaw dapat meningkatkan hasil belajar IPA.
Pengembangan Media Pembelajaran Interaktif Pada Konsep Monera Berbasis Smartphone Android
Authors: Amirullah Gufron , Susilo Susilo
Published: May 2018

This study aims to develop media learning of Android-based mobile for students of Senior High School class X, and to know the quality of mobile media learningproducts on the concept of monera. The research was done through 2 stages, namely Preliminary and Formative Evaluation. Formative Evaluation Phase was divided into 3 stages namely, Self-Evaluation, Prototyping and Field Test. Validation was done by material experts and media experts. The developed media was tested to 100 students of class X IPA SMAN 5 Bekasi. Data analysis techniques were used the feasibility and quality of media obtained with the instrument in the form of a questionnaire. The results showed that the value of media-based learning feasibility of Android-based monera of 93.92% with Excellent category and material expert judgment of 97% with Excellent category. Trial on students at SMAN 5 Bekasi school obtained the quality of media learning is 91.40% with Excellent category. Based on the results of data acquisition shows that learning media based on Android mobile learning on the concept of monera worthy of use as a source of learning class X high school students.
Abby as Ally: An Argument for Culturally Disruptive Pedagogy
Authors: San Pedro Timothy
Published: May 2018

This article re-stories the navigation of one White female student, Abby, enrolled in a 12th grade ethnic studies course titled Native American literature. Abby reveals tensions, disruptions, and self-discoveries within a course that recentered Indigenous histories and literacies while, concurrently, decentered dominant knowledge systems. Her story addresses this article’s central question: How does Whiteness operate in an ethnic studies course? Eleven vignettes trace Abby’s critical consciousness development within and beyond this course. Relying on Paris and Alim’s (2014, 2017) culturally sustaining pedagogy and McCarty and Lee’s (2014) culturally revitalizing pedagogy, I offer culturally disruptive pedagogy to argue that as educators, researchers, and community members seek ways to sustain and revitalize cultural practices, we must also consider the ways hegemonic norms—as perpetuated by ideologies of whiteness—require a needed disruption.
Does the Package Matter? A Comparison of Five Common Multilevel Modeling Software Packages
Authors: McCoach D. Betsy , Rifenbark Graham G. , Newton Sarah D. , Li Xiaoran , Kooken Janice , Yomtov Dani , Gambino Anthony J. , Bellara Aarti
Published: May 2018

This study compared five common multilevel software packages via Monte Carlo simulation: HLM 7, M plus 7.4, R (lme4 V1.1-12), Stata 14.1, and SAS 9.4 to determine how the programs differ in estimation accuracy and speed, as well as convergence, when modeling multiple randomly varying slopes of different magnitudes. Simulated data included population variance estimates, which were zero or near zero for two of the five random slopes. Generally, when yielding admissible solutions, all five software packages produced comparable and reasonably unbiased parameter estimates. However, noticeable differences among the five packages arose in terms of speed, convergence rates, and the production of standard errors for random effects, especially when the variances of these effects were zero in the population. The results of this study suggest that applied researchers should carefully consider which random effects they wish to include in their models. In addition, nonconvergence rates vary across packages, and models that fail to converge in one package may converge in another.
La cobertura del cultivo como indicador de la productividad de maíz en un lote con siembra variable
Authors: De la Casa A. , Ovando G. , Bressanini L. , Martínez J. , Miranda C. , Díaz G.
Published: May 2018

La variabilidad del rendimiento de un lote se puede monitorear por diversos medios remotos. El objetivo del trabajo fue determinar la cobertura del cultivo (CC) de maíz (Zea mays L.) a partir de datos de NDVI, para evaluar las diferencias productivas en un lote de 45 ha bajo riego ubicado al sur de la ciudad de Córdoba, Argentina, durante el ciclo 2013-2014. En el lote se establecieron seis sectores de muestreo donde periódicamente fueron adquiridas fotografías con una cámara digital que produce datos de NDVI. A los efectos de determinar CC, las imágenes de NDVI se clasificaron aplicando distintos umbrales para discriminar entre píxeles con vegetación y suelo. Cualquiera de los umbrales utilizados permitió establecer diferencias de CC entre sectores que se incrementaron durante la etapa reproductiva. El contraste entre los valores de NDVI locales y los de AQUA-MODIS mostró relaciones lineales muy consistentes, que permite distinguir un potencial productivo diferente entre los sectores norte y sur del lote. El contenido de agua del suelo acusó diferencias significativas (P<0,01) entre los sectores durante las etapas R1 y R4 que, concurrente con la disminución de CC y la menor densidad de siembra, explicaría la merma productiva al norte del lote de maíz.
Caracterización de harinas de tritíceas híbridas
Authors: Castaño M.N. , Ferrari E.D. , Picca A.T. , Curti M.I. , Ribotta P.D. , León A.E. , Ferreira V.A. , Grassi E.M. , Ferreira A. , Di Santo H.E. , Castillo E.A. , Paccapelo H.A.
Published: May 2018

Triticales (x Triticosecale Wittmack) y tricepiros (x Triticosecale Witt. X xAgrotricum A. Camus) se mejoran con la finalidad de obtener cultivares de doble propósito (forraje y grano). Para su utilización en consumo humano, la calidad de las harinas de triticales es frecuentemente evaluada midiendo el diámetro y factor de expansión de las galletitas horneadas. Estos indicadores están fuertemente relacionados al contenido de almidón dañado, proteína y polisacáridos no amiláceos de la harina que determinan sus propiedades de absorción de agua. Se evaluaron 25 líneas experimentales, ocho cultivares de triticale y uno de tricepiro en Santa Rosa, La Pampa, Argentina, durante 2012, mediante análisis de correlación simple y de conglomerados. Se observaron correlaciones positivas entre los valores de la capacidad de retención del solvente agua, carbonato de sodio, ácido láctico y sacarosa, índice de retención de agua alcalina, pentosanos solubles y almidón dañado. La caracterización de las harinas y la separación en grupos según sus propiedades fisicoquímicas permitieron la selección de genotipos con diferentes propiedades funcionales. En el análisis de conglomerados, el cluster 1 agrupó los materiales con mejorescaracterísticas fisicoquímicas de las harinas, lo cual aumenta las posibilidades de su empleo en la alimentación humana.
Estimación no destructiva del área foliar en plantas individuales de maíz (Zea mays L.) creciendo en canopeos
Authors: Razquin C.J. , Maddonni G.A. , Vega C.R.C.
Published: May 2018

En maíz (Zea mays L.), la competencia intraespecífica por recursos abióticos afecta atributos morfofisiológicos claves como el tamaño y duración del área foliar verde. En este estudio, se calibraron y validaron cuatro ecuaciones (Ec.1 a Ec.4) de estimación no destructiva del área foliar por planta en floración (AFp) en cuatro genotipos creciendo en canopeos con distinta disponibilidad de N (0 y 400 kg de N ha-1) y tres densidades de siembra (2, 9 y 16 pl m-2). El genotipo y la densidad produjeron las mayores variaciones del perfil vertical del área foliar. Las ecuaciones exhibieron distinta bondad de ajuste (Ec.4 > Ec.1=Ec.2> Ec.3). La Ec.4, que utiliza un parámetro asociado con la senescencia foliar, superó al resto en su capacidad predictiva para estimar AFp en un amplio rango de crecimiento, particularmente en los individuos más suprimidos de la población. Dada la simplicidad de su aplicación por sus parámetros de fácil y rápida medición, la Ec.4 sería más apropiada para la estimación del AFp en estudios poblacionales que valoran la habilidad competitiva de individuos que crecen en canopeos con distinta presión de competencia por recursos.
Caenodelphax teapae (Fowler) (Hemiptera: Delphacidae): nuevo vector natural del Mal de Río Cuarto virus (MRCV, Fijivirus) en Argentina
Authors: Velázquez P.D. , De Remes Lenicov A.M.M. , Truol G.A.
Published: May 2018

El Mal de Río Cuarto virus (MRCV) es el agente causal del mal de Río Cuarto, una de las principales enfermedades del maíz en Argentina. Es transmitido en la naturaleza principalmente por Delphacodes kuscheli (Insecta: Hemiptera). La presencia de otros delfácidos en áreas afectadas por la enfermedad, permite suponer que éstos tendrían un rol en su epidemiología. En prospecciones realizadas entre los años 2003 y 2006 en las provincias de Tucumán y Salta (noroeste argentino), Caenodelphax teapae se destacó por ser una de las especies más abundantes en la vegetación espontánea. El MRCV fue transmitido experimentalmente a trigo a partir de ejemplares naturalmente infectados provenientes de campo en Tucumán. La reacción del virus en las pruebas serológicas realizadas a insectos y plantas infectadas, así como la sintomatología observada en éstas y la presencia de agregados de partículas virales en células floemáticas, confirmaron que C. teapae tuvo la capacidad de transmitir el MRCV a trigo desde poblaciones naturales capturadas en la provincia de Tucumán. Las evidencias demostraron por primera vez que las poblaciones naturales de C. teapae son portadoras del MRCV y que actúan como vectoras del virus con importantes implicancias en la epidemiología del mal de Río Cuarto.
Método alternativo de germinación para determinar calidad de semillas en Buffel Grass (Cenchrus ciliaris L.)
Authors: Agüero C.G. , Pereyra G.R. , Rolando R.O.
Published: May 2018

Un problema que surge al evaluar la calidad fisiológica en Cenchrus ciliaris L. es el bajo porcentaje de germinación obtenido en los ensayos el ISTA debido a que la dormición en las semillas no es eliminada eficazmente con los pretratamientos indicados. El objetivo de este trabajo que desarrollar un método de análisis que permitiera determinar de manera más precisa la calidad de la semilla en C. ciliaris L. Se utilizaron semillas recién cosechadas del cultivar Texas. Los ensayos se extendieron por 6 meses, con intervalos de 3 meses entre cada uno. Se determinó la relación porcentual de fascículos llenos y la viabilidad por tetrazolio. En los ensayos de germinación se utilizaron diferentes alternativas de reparación de las semillas: fascículos intactos, fascículos escarificados, cariópsides intactas y cariópsides escarificadas. Se evaluó la evolución de la dormición en el tiempo (0, 3 y 6 meses) y la ruptura de ésta con diferentes tratamientos (testigo, frío, calor, KNO3 y AG3). Para determinar la calidad fisiológica en C. ciliaris L. es recomendable la utilización de cariópsides escarificadas y el tratamiento con ácido giberélico.
Análisis de la evolución del clima y los pastizales naturales en el noroeste de la provincia de Chubut, Argentina, durante el período 2000-2014: identificación de variables asociadas a la disminución de las existencias ganaderas en la región
Authors: García Martínez G.C. , Ciari G. , Gaitán J. , Caruso C. , Nagahama N. , Opazo W. , Nakamatsu V. , Lloyd C. , Cotut C. , Irisarri G. , Escobar J.
Published: May 2018

Una elevada proporción del territorio argentino corresponde a tierras secas yuna tercera parte de éstas se hallan en la Patagonia. Esta región históricamenteha sufrido procesos de deterioro del pastizal. Generalmente, la degradación es atribuida al uso ganadero; sin embargo, el efecto del clima sobre estos sistemas ha sido poco analizado. El objetivo de este trabajo fue analizar la evolución del clima y de los pastizales naturales, a través de la identificación de variables que permitan comprender los posibles cambios en las existencias ganaderas para el noroeste de la provincia de Chubut, en el período 2000-2014. Para ello se analizaron diferentes tipos de datos: climáticos, índice verde normalizado (NDVI), lecturas de monitores MARAS y existencias ganaderas. Los resultados indican incrementos de temperatura y tendencias negativas de la productividad y estructura del pastizal. Asimismo se observó una disminución de las existencias ganaderas. El incremento de las temperaturas podría estar relacionado con balances hídricos desfavorables, los cuales, combinados con el sobrepastoreo, pueden ser factores claves en los procesos de deterioro del pastizal. Resulta fundamental continuar con el monitoreo de las diferentes variables que caracterizan a estos sistemas y diseñar estrategias que permitan mitigar los procesos descriptos.
Efecto del porcentaje de pildorado sobre la implantación y productividad de alfalfa (Medicago sativa L.)
Authors: Odorizzi A.S. , Arolfo V. , Basigalup D.H. , Solá S.
Published: May 2018

El pildorado consiste en revestir a la semilla de alfalfa con una mezcla de rizobios, un fungicida o un insecticida, carbonato de calcio y un aglutinante. El objetivo fue comparar porcentajes de pildorado (10%, 20%, 30%, 50% y 75%) y semilla desnuda, con respecto a la densidad de plantas establecidas y la producción forrajera. Se implantó un ensayo con tres repeticiones en otoño de 2013 con una densidad fija (10 kg por ha), y se analizó el número de plantas por m2 a diferentes días de la siembra, y al finalizar la primera temporada y la producción forrajera. Hasta los 17 y 29 días las plantas por m2 fueron superiores en los dos tratamientos con semilla desnuda. A partir de los 46 días, los tratamientos con menor porcentaje de pildorado se ubicaron entre los mayores valores de plantas por m2. Los niveles altos de pildorado (30, 50 y 75%) presentaron la menor cantidad de plantas por m2. Las mayores producciones de forraje se obtuvieron con bajos porcentajes de pildorado y con semilla desnuda. Las semillas con 75% de pildorado tuvieron el menor rendimiento acumulado de forraje y uno de los menores valores de número de plantas por m2 al final de la temporada.
Expansion Of Value And Form Dol Musicality As Ritual Tabot In Bengkulu
Authors: Parmadie Bambang , Arya Sugiartha I Gede
Published: May 2018

The expansion of value and form musicality in Tabot ritual music includes ideology, musicality and new sociocultural phenomena in the performing arts extend to all elements of Bengkulu society in general. The sacred music referred to in the Tabot rituals of Bengkulu is Dol music. The transformations in forms of Dol music and musicality are: sacred musicality becomes secular or profane. The physical form, function, and aesthetic of Dol music in Tabot rituals have an ever-increasing creativity in their development, musical progress and sociocultural-supporter progress. The commodification of Dol music transforms the artistic identity associated with new music from Bengkulu. The development of musicality moves freely, making changes in sacred ideology. This analysis reveals problems using social practice theory, hegemonic theory, and popular culture theory, applied eclectically by using a qualitative method. Data is collected Through observation, interview, and document study. The findings of this research are that there are forms of exploration and exploitation of Dol music from sacred to secular or profane and vice versa in the context of the commodification of physical musicality, function, and aesthetics in the ideological identity of the supporting community and the musical space dimension. The secular or profane Dol music permeates and indoctrinates the sacred Dol musical ideology as the musical ceremony of Tabot ritual. The counter-assumption about a sacred art form that will experience a shift into secular or profane is not entirely true for Dol music in Bengkulu.
Influence of Planting Medium on Different Nutrient Concentration to The Growth and Yield of Celery (Apium graveolens L.) With The Nutrient Film Technique Hydroponic Cultivation System
Authors: Sari Kun Rawan
Published: May 2018

Celery is a commercial plant that should be cultivated. Nutrient Film Technique Hydroponic cultivation systems is one of the technologies that can be applied in a narrow area, but research of the planting medium and the concentration of nutrients in hydroponic cultivation system for celery plants are rare. This study aimed to analyze the influence interaction and single factors planting medium and nutrient concentrations on the growth and yield of celery. The design of this study used split plot design. The main plot were the concentration of nutrients (n): 1200 ppm (n1), 1300 ppm (n2), and 1400 ppm (n3). Subplot were the planting mediums (m): rockwool as control (m0), sawdust (m1), husk fuel (m2), and rice straw (m3). There were twelve combinations, with three replicates. The results showed that treatment interaction was not significant effect on growth and yield, but a single treatment of plant media rockwool and nutrient concentration of 1300 ppm able to increase the growth and yield of celery.
Süt Üretim Kooperatiflerinde Etkinlik Ve Verimlilik: Biga Örneği
Authors: BEKTAŞ Selahattin , SEKİ İsmail
Published: May 2018

Biga

İlçesinin hayvancılıkta büyük gelişme potansiyeline sahip olması aynı zamanda

bölgeyi bir süt üretim merkezi haline getirebilecek bir potansiyeli de

beraberinde getirmektedir. Rekabet gücünün verimlilik artışına bağlı olduğu

gerçeğinden hareketle Biga ilçesindeki kooperatifler vasıtası ile yapılan süt

üretiminin etkinlik ve verimlilik analizinin yapılması ve mevcut etkinlik ve

verimlilik seviyelerini artırıcı iktisat politikalarının belirlenmesi Biga

ilçesinin bölgesel kalkınma stratejisinin oluşturulmasında önemli bir rol

üstlenecektir.Araştırma

konusu olan kooperatiflerin etkinlik seviyeleri düşüktür. Bu bakımdan süt

üretiminin artırılması için girdi artışına yönelik uygulamalardan ziyade

yapısal sorunları giderici önlemler alınmalıdır. Kooperatif üyelerinin teknolojik donanımları

yetersizdir. Çiftliklerdeki söz konusu yetersizlik giderilirse toplam faktör

verimliliğinde dolayısı ile kooperatiflerin rekabet gücü artacaktır.
Kalkınma Ajanslarında Merkezi Ve Yerel Unsurların Etkisi: Kalkınma Ajanslarının Türkiye Uygulaması Üzerine Bir Değerlendirme
Authors: KUTLU Salih Ziya , GÖRÜN Mustafa
Published: May 2018

After 1970’s, the becoming of regional development

policies increasingly more popular has led to the emergence of

institutionalized efforts of the region. The development agencies, established

first in 1933 in the United States, emerge as a reflection of the

institutionalization efforts in Europe. The establishment of agencies in

Turkey, which try to make cooperation among public-private-civil sector in

local, coincides in 2006. In the study which will be conducted as a literature

survey, it is attempted to analyse the impact of central government on

administrative and financial structure and transaction of development agencies

of which the basic philosophy is to actualise local governance in Turkey in

which the centralized management system is dominated. For this purpose,  the administrative structures and  budgets of the 26 development agencies, which

were established in Turkey, and their relationship with the Ministry of

Development will be investigated.
D.H. Lawrence ve Baba Katilliği
Authors: AYVAZ Özgü
Published: May 2018

D. H. Lawrence

(1885-1930) is an English writer and poet of the 20th century. He wrote many

novels, short stories, and poems reflecting human psychology. His short story

“The Rocking-Horse Winner” is an autobiographical work delineating the

mother-son and father-son relationships with reference to the Freudian theory

of “patricide”. Therefore, this article portrays how the protagonist of the

short story resembles Lawrence himself in the sense that they both kill their

fathers symbolically.  
Tüketimde Benlik Algısı: Sosyal Medya Hesaplarında Tüketici Olmak
Authors: ASIL Sermin
Published: May 2018

Today,

while the individuals are searching for products that fit their real self and

make it easier to reach their ideal self in the consumption process, self respect

undertake the main determinant of consumption. In this context, research aims

to determine relationship between a sustainable consumption behavior with self

respect. To achieve this goal, shopping clubs' sharings in social media

accounts has been subject to content analysis covering the first six months of

2016. The factors examined in the analysis were determined by considering the

subscales of self respect. This work, which is supposed to help reconstruction

of the shopping clubs, is based on consumption and self perception.
Seyahat Acentalarında Internet Kullanımı ve Sosyal Medya
Authors: GÖKDEMİR Sinan , ERDEM S. Haluk
Published: May 2018

The

involvement of information technology in every aspect of life leads to more

frequent and effective use of information technology in the individuals

involved in tourism. Travel agencies, one of the most active actors of tourism

marketing. They have to use systems based on information technology and

parallel to information technology. The use of the Internet in travel agencies,

especially Global Distribution Channels (GDS) and Central Reservation Systems

(CRS), is becoming widespread in order to reach new markets. Especially with

the use of 3G and 4,5 G technologies, internet agency has become very

important. It is observed that dynamic web sites over the Internet and strong

demand for travel and tourism products increase interest and competition to online

travel agency. The aim of this study is to provide travel agencies with

developing technologies and social media as a marketing tool. For this reason,

developments related to information technology, internet and social media usage

of the final consumer have been discussed. In particular, the use of social

network sites has been emphasized. Facebook which is one of the most popular social

sharing site with 1.7 billion of users is examined. In addition, advantages of

Facebook in marketing has been checked and given to the travel agencies. It is

thought that this matter is important in terms of travel agencies. In this

context, the document examination method in qualitative research methods is

used for the research. The main result of the research is travel agencies need

to use web sites, internet and social media to secure their future business. Recommendations

have been developed for travel agencies which have not been able to catch up the

age regarding internet usage.