bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementation of Inquiry Method on Students' Critical Thinking Ability in the Concept of Structure and Function of Plant Networks
Authors: Andalia Nurlena , Ridhwan Muhammad , Roslina Roslina , Afni Nur , AG Burhanuddin
Published: September 2019

This study aims to determine the implementation of inquiry methods that can improve students' critical thinking skills on the concept of structure and function of plant tissues at the Sekolah Keberbakatan Olah Raga Negeri Aceh (Aceh State Sports School). The population of this research is the many 112 students of class XI of the Sekolah Keberbakatan Olah Raga Negeri Aceh. The sample in this study were 26 students in class XI-1 as an experimental class and 26 students in class XI-2 as a control class. The method used is a descriptive method with a structural approach. Data collection is done by test techniques and data processing using the t-test formula. The results of the data analysis showed that the average ability or average value of class XI-1 students of the Sekolah Keberbakatan Olah Raga Negeri Aceh in taking the test received 80.7. While the average value of class XI-2 students of the Sekolah Keberbakatan Olah Raga Negeri Aceh in taking the test gets 70. Based on the price of t-counts and t-tables at a significant level of 0.05 with db: 50 of the sample class XI, then t- the count is 6.40 and the t-table is 1.66. So that the hypothesis proposed the implementation of inquiry methods can improve students' critical thinking skills on the concept of the structure and function of plant tissues in the Sekolah Keberbakatan Olah Raga Negeri Aceh is Accepted. It is recommended that this research can increase knowledge through the use of inquiry methods in all biological science subject matter.
Blended Learning Development In Islamic Religious Education Lessons Make Use of Web and Android
Authors: Suhada H. , Nulhakim Lukman , Sudarto Ferry , Kristiadi Dedy Prasetya
Published: September 2019

The study of Islamic religious education in the era of industrial revolution 4.0 requires teaching methods which involve the role of information and communication technology in order to produce the expected quality. students cannot participate in learning maximally which has an impact on the quality of learning.The independence of learning is the goal of this study because to be able to absorb the knowledge of Islamic education it requires a great deal of motivation both theory and practice. Blended learning is a learning model which combines study in the classroom  transitional which combines conventional learning with e-learning while increasing student independence. In its implementation, blended learning allows students to get explanations from lecturers in class, then proceed with collaboration in groups and present assignments online by video conference presentations made separately by each group member. The video then uploaded to the e-learning system by group members and it can be seen online by the class participants according to the lesson schedule, to be given a score and description of the presentation to each group member online. Blended learning represents new method  to create learning experiences that can provide the right learning at the right time and in the right place for each and every individual and bringing groups of learners together through different cultures.
Life Skills Education Programs; The Bridge to the Employment of the Poors
Authors: Mulyadi Didi , Rosyidi Unifah , Suryadi Suryadi
Published: September 2019

Employment is such kind of a very rare opportunity for the poors unable to attend formal schoolings. This research is examining the implementation effectiveness of skills based education program designed by the government through grant and scholarship to reduce the poverty and unemployment. It also tries to compare the design and its result to find whether the program was effectivey implemented or not. This research uses qualitative method through CIPP evaluation model. The research found that in a policy layer, context and input  evaluation steps, the life skills education program is comprehensively thought and considered as it covers aspects including the regulation, the program guidance, the fund aids, the curriculla, the guide for selected institutions ,the report mechanism. While at the process and product evalauation steps, the reserach found that there were huge gaps in implementation especially at the placement at the industries. There were only less than 10% of participants entering to work fields while most of its program participants work only as a parttimers which don’t provide reguler income,.So the target of decreasing the poverty and reducing the unemployment was not well measured.
Results of the Feasibility of Material and Media Aspects of Teaching Books on Sports Nutrition
Authors: Lufthansa Luthfie , Rusdiawan Afif , Yahya Alfian , Pawitra Paulus Rah Adi , Sari Reno Siska
Published: September 2019

This study aims to determine the results of the feasibility of the material aspects and media of sports nutrition teaching textbooks. This research is a research on the development of sports nutrition science textbooks. The development of the teaching book on Nutrition Sports Science refers to the 4D model developed by Thiagarajan, et al. (1974) which consists of 4 stages, namely Define, Design, Development, and Disseminate, modified to be adapted to this study. This textbook is tested by material and media experts. The instrument used is an expert validation instrument. Based on the results of the study it can be concluded that the Sports Nutrition Science textbook was declared fit for use as a sports Nutrition Science textbook by material and media experts.
Using Schoology in the Era of IR 4.0 (Factors Analysis From Students’ Perception)
Authors: Sriyanto Widi , Kaniadewi Nita
Published: September 2019

This study aimed to gain students' perceptions in the use of Schoology to assist their learning activities in the era of industrial revolution 4.0. This study involved four classes that applied online and offline learning systems that used Schoology in their lecture activities. This type of research is quantitative description with a factor analysis involving 100 respondents who were given a questionnaire. The instrument of the study was close-ended questionnaire that refer to several indicators such as student technology literacy, student learning styles, lecturer roles, and features of Schoology. Then, the results of this study showed that there were five important factors about the use of Schoology in facilitating their learning activities both inside and outside the classroom.
Effect of Principal's Transformational Leadership Style on Teacher Performance
Authors: Rahayu Bekti , Idris Fahmi , Herawati Tuti
Published: September 2019

The purpose of this study is to examine how Transformational Leadership is Teacher Performance. Research methods; descriptive analysis, quantitative approach, product moment correlation analysis techniques, determination and regression. Data collected through questionnaires. The population in this study were teachers in two elementary schools in East Bogor City, totaling 54 people, with a total sample of 34 respondents with simple random sampling technique. The results showed a significant relationship between transformational leadership and teacher teaching performance. The recommendation to improve teacher performance is to improve the dimensions of intellectual stimulation and the sensitivity of individual principals and teacher participation in training to improve teacher professional competence.
Pancasila as Ideology and Characteristics Civic Education in Indonesia
Authors: Dewantara Jagad Aditya , Suhendar Ilham Fajar , Rosyid Rum , Atmaja Thomy Sastra
Published: September 2019

The role of Civic Education in its era of globalization is very necessary, given its very strategic position, especially for the formation of nation and character building. The purpose of this study is to prove that Civic Education in Indonesia is inseparable from the values of Pancasila. The literature method is used to get conclusions in proving that Pancasila is an ideology and characteristic of civic education in Indonesia. The results prove that Civic Education must be in accordance with Pancasila values in all aspects of citizenship learning. Therefore Pancasila is a characteristic of the State of Indonesia as a philosophical system animating all the concepts of Citizenship teachings and must be applied in the life of the nation and state.
Effect of Performance Assessment and Compensation on Lecturer and Employee Productivity in The Faculty of Education and Science North Sumatera Islamic University
Authors: Siregar Melinda
Published: September 2019

Performance Appraisal is an effort to identify, measure (assess) and manage (management) to determine decisions about success or failure in carrying out work carried out by workers with work standards set by the company. Compensation for organizations / companies means rewards / rewards to workers who have contributed in realizing their goals, through activities called work. Total productivity is nothing but the ratio of what is produced (out put) to all what is used (in put) to obtain these results. FKIP-UISU Medan is part of one of the faculties at the Islamic University of North Sumatra Medan and its address at Jalan Puri Number 18 Simpang Jalan Alloy Tenaga Medan. The problem formulation is "How big is the effect of performance appraisal and compensation on the productivity of lecturers and staff at the Teaching and Education Faculty of the Islamic University of North Sumatra".The purpose of this study was to determine the FKIP-UISU lecturer and staff assessment of performance appraisals, compensation provided, level of productivity. The results of the study using the formula of multiple correlation between variables x1 (performance appraisal) and x 2 (compensation) together with variable y (productivity of lecturers and staff) that is 0.826 which means it has a positive relationship because r count is greater than rtable (0.826> 0.361 ).  Based on the table, it is known that = 0.826 is at the coefficient interval 0.80 - 1,000, then the relationship of variable x1 (performance appraisal) with variable x2 (compensation) which is jointly correlated with variable y (lecturer and employee productivity) is included in the category very strong relationship. Based on the calculation of the value of Fcount = 28.890 this value is then consulted with Ftable with an error rate of 5% based on the numerator dk = k (2) and the denominator dk = n-k-1 (27), then Ftable = 3.35 is obtained. These results indicate that Fcount is greater than Ftable, 28.890> 3.35. Because the price of Fcount is far greater than the price of Fable, the proposed Zero Hypothesis (H0) is rejected and the Alternative Hypothesis (Ha) is accepted. According to the results of these calculations it can be concluded that the productivity of lecturers and staff at the Teaching and Education Faculty of the Islamic University of North Sumatra, Medan is influenced by performance evaluation and compensation variables of 68.15%, while 31.85% is influenced by other variables.
Students’ English Language Learning Strategy and Implication to the Teaching and Learning Activity: A Study at Health Vocational Schools (SMK Kesehatan) in Ruteng at Flores
Authors: Daar Gabriel Fredi
Published: September 2019

Different theorists proposed different definition of learning strategies (Wenden, 1987, O’Malley and Chamot, 1990, Oxford, 1990).  All the definitions highlighted that learning strategies are the actions taken to make learning easier, faster, more enjoyable, more self-directed, more effective, and more transferrable. The study aims to find out how Health Vocational School students in Ruteng, Flores employ learning strategies, what strategy is mostly employed and the implications of learning strategy employed to language learning and teaching which cover cognitive strategy, meta cognitive strategy and social strategy. It’s mixed method research combining the use of quantitative and qualitative study.  For the purpose of quantitative study, it was chosen 123 students by using the technique of cluster random sampling, meanwhile for the purpose of qualitative data, it was chosen 12 students and three English teachers by using purposive sampling. The research result shows that students of health vocational schools in Ruteng, Flores employ medium language learning strategy for the three learning strategies studied (Cognitive strategy employed by 90,2% (111) students, meta cognitive strategy employed by 86,2%(106) students, and social strategy employed by 86,2% (106) students. Regarding learning strategy mostly employed, the most frequent strategy is cognitive strategy which gains the mean 3.33. Meanwhile, the least strategy is social strategy and it reaches the mean of 3.26.  Medium learning strategy for the three strategies studied, and cognitive strategy as the most frequent strategy employed has the implication to applying teaching method which is oriented to raise up students’ cognitive strategy, adopting regularly the meta cognitive instruction in the classroom to help students improve academic achievement, and providing the opportunity for students to practice speaking English out of the classroom.
Effectiveness of Students Independence Instruments Learning Cake Products and Indonesian Cake
Authors: Rahmah Latifahtur , Nurlaela Luthfiyah , Santosa Agus Budi
Published: September 2019

Independence is a needed skill in the 21st century. Learning independence will form a habit that will improve work skills. The focus of this research is to see the effectiveness of student independence instruments in learning cake products and Indonesian cake. The approach of this study is a qualitative approach with the trial subjects in this study involving 32 students of class XI Culinary 1 who were teaching cake products and Indonesian cake lessons at SMKN 8 Surabaya. The method used in this study is development research with a 4D model. The results of the validation of the instruments of the students' independence in the decoration material were on average material aspects of 4.36. The construction was 4.51, language or culture as well as 4.44. The assessment of the three validators of the students' independence instruments obtained the results of an average validation of 4.44 in the valid category. The result shows that the instrument was developed accordingly and can use as an instrument of student independence in Indonesian cake and cake product lessons. The reliability of the kappa coefficient for the three observers is 0.548 > 0.349. Based on the analysis carried out, it can conclude that the instrument tests the independence of independence and can use as an independent instrument for Indonesian cake and cake product lessons.
Common Mistakes Found in Essay Writing of Chemical Engineering Department First Grade Students in Politeknik Negeri Lhokseumawe
Authors: Marzuki Marlina
Published: September 2019

Many students often face difficulties when they are writing an essay in English while they are required to master written English as one of their basic competencies as the vocational students. The study observes common mistakes occurring in English essays written by first grade students of Oil and Gas Processing Study Program of Chemical Engineering Department in Politeknik Negeri Lhokseumawe, Aceh, Indonesia. The mistakes were categorized into seven types, i.e. word collocation and phrase, preposition, article/determiner, verb form, word order, spelling and punctuation. This research aims to find out the relation between the occurrences of the mistakes to the background of the students as the non-native English speaker. The methodology used in this study was combined between descriptive analysis and quantitative method. Data were analyzed by calculating the mistakes number done the students in their essays. The percentage of each mistake parameter is presented in pie chart form. Twenty-two students were involved in this study. Based on the result found in the study, the writer has gained several points that can be used to improve the teaching material for writing for academic purpose course. The study suggests that the course should focus on word collocation and some basic grammars instead of giving them English text.
Using Gauss - Jordan elimination method with The Application of Android for Solving Linear Equations
Authors: Hasanudin Muhaimin , Kristiadi Dedy Prasetya , Yuliana Khozin , Tarmizi Rasyid , Kuswardani Dwina , Abdurrasyid A
Published: September 2019

Problems involving mathematical models appear in many scientific disciplines. Complex mathematical models sometimes cannot be solved by analytic methods using standard algebraic formulas. Computers play a major role in the development of the field of numerical methods because the calculation uses numerical methods in the form of arithmetic operations, the number of arithmetic operations is very large and repetitive, so manual calculations are often tedious and errors occur. This study aims to develop software solutions for linear equations by implementing the Gauss-Jordan elimination(GJ-elimination) method, building software for linear equations carried out through five stages, namely: (1) System Modeling (2) Simplification of Models, (3) Numerical Methods and algorithms, (4) programming languages using The Android Studio and (5) Simulation programs. Overall regarding content, proper software that can be used by students and lecturers in implementing numerical methods because there are ways to use the application and steps to solve linear equation problems using the GJ-elimination method.
Three In One : Character Building And Academic Achievement With The Making Of Game Religion Multimedia Vocational School
Authors: Suhada H.
Published: September 2019

Cases of student brawling, pornography to drug use by students are still concern today. Meanwhile, concerns about the quality of education in our country are increasing because the influence of technology is growing rapidly but it is not being used to the fullest for learning needs. Therefore we need solutions to improve the quality of learning by using information technology. Vocational high school multimedia study program offers the solution of culturally charged religious games, religious education and expertise. Making this religion game was directed by a multimedia productive teacher assisted by both religious and Indonesian Language teacher because the production of religious video game is the result of combining religion, narration and video game making skills. Video game religion can begin with an observation of social and religious life in schools or homes. Literacy can be done to help giving new ideas and value to character, morals and religion. Through the manufacture of religion games, it is expected that students interchange every existing role while learning religion. In addition to video games production can enhance students’ skills and accomplishments in multimedia majors. The study set out to describe the creation of a game of religion that features the values of character education and Indonesian Language education in multimedia skills programs and make an attractive learning model
Refusing Without “No”: The Way Lecturers Indicate Disagreement of Asian Efl Learners In Speaking Class
Authors: Novalina Niyan Wahyu , Setiawan Slamet , Mustofa Ali
Published: September 2019

Refusal is a part of face threatening act which belong to one of politeness. Refusal is being phenomenon in language education especially in classroom. Learners often refuse lecturers’ instruction when they teach in the class. One of refusal strategies is disagreement which is a part of traditional politeness theories. In language teaching, not only learners but also lecturers also often disagree with the learners and the disagreement is also necessary for the learners. In this study, lecturers used linguistic markers to express disagreement in mitigating the face threatening. In Asian context, there were vary disagreements which were expressed by Asians. In this study, head movement and hand gesture is analyzed as disagreement of linguistic markers to stress the utterances in implicit meaning. They might become the way of disagreement communication for lecturers who taught language education in EFL context. This study observed lecturers’ disagreements in Asian language classroom context with heterogeneous learners (Indonesian, Malaysian, and Thai EFL learners). The result of this study is lecturers disagree for dispreferred options in certain aspect and the silence was minimized to avoid negative gesture or head movement. The way of lecturer in disagreement influenced by western culture when respond the learners’ refusal act.
A Portrait About Writing Explanatory Skill of Fifth-Grade Elementary School
Authors: Palupi Bening Sri , Subiyantoro Slamet , Rukayah Rukayah
Published: September 2019

Indonesia has implemented the 2013 curriculum as a text-based learning framework. The text is used as a defender of science. The logical consequence, language skills are an absolute requirement for students so that they can achieve learning goals. On the other hand, writing is the highest skill in the language. Therefore, the study was aimed to describe the explanatory writing skills of fifth-grade elementary students. This research is a descriptive qualitative study using a sample of fifth-grade students in public elementary schools in the city of Surakarta, Central Java, Indonesia. Data collection techniques using documents and interviews. Source triangulation is used as data validity. The results showed that the greatest difficulty students had in writing explanations was writing cohesive and coherent sentences and paragraphs. They are only able to write their ideas without regard to syntactic rules. These writing skills involve students' metacognitive skills which also reflect other language skills such as listening and reading. This research output will be useful for academics and practitioners in determining the right learning approach to improve the success of text-based learning or the 2013 curriculum.
Implementation of Predict-Observe-Explain (POE) Strategy to Reduce Misconception in Thermochemistry
Authors: Zakiyah Imroatuz , Widodo Wahono , Tukiran Tukiran
Published: September 2019

This research aims to determine that the implementation of the POE (predict-observe-explain) strategy can be used to correct misconceptions in thermochemistry. This research uses One Group Pretest-Posttest Design. This research was conducted in class XI MIA 5 students at Bhayangkari 3 Porong Senior High School. The sample used was 33 students who were divided into 6 heterogeneous groups. The students are given a conceptual understanding test as pretest and posttest in the form of a three-tier diagnostic test which amounts 20 questions. After pretest the next stage is to do remediation given learning process using worksheet of POE strategy. Then the results of pretest and posttest were then analyzed using Wilcoxon signed rank test. The result is POE (predict-observe-explain) strategy can be used to correct misconceptions in thermochemistry sub-topic for students in class XI of Bhayangkari 3 Porong Senior High School. This is indicated by a decrease in the percentage of students' misconceptions from 66.36% to 6.36%. In addition, based on the Wilcoxon Sign Rank Test, Asymp. Sig (2-Tailed) has 0 value, it means hypothesis 0 is rejected, which means there is a significant influence on the implementation of learning with POE strategies to improve the student’s status of knowing the concept.
Policy Making of Strategic Plan for Success of Five-Year Development Agenda of Local Governance
Authors: Taufiqurokhman Taufiqurokhman , Andriansyah Andriansyah
Published: September 2019

The policy making of the five-year strategic plan of its substance, involves participation in the process of policy formulation through Development Deliberation discussion in decentralization of regional autonomy. That is, it delivers the authority of the central government to the autonomous regions in determining the policy (political authority) and implementing the policy (administrative authority), based on local voice and local choice. The local government is expected to identify needs, formulate development goals. The research used qualitative method with ethnography approach by collecting various data from various sources with deep-interview technique. The purpose of the study describes the three things, namely setting agenda, policy formulation and budgeting in a formulation of stakeholders' participation. For contribution: First: participation in development planning in tokenism and elitist party stages, partnerships between communities with bureaucracy and political officials are still subordinate union of partnership. Dialogue held is still pseudo and decision making are not done by bargaining among actors. Second: The quality of planning is still bad, because it has not been able to answer the needs of the community and there is no interconnected substance between documents with one another.
Licensing Services Innovation Establishing Buildings in One Stop Integrated Services in North Jakarta
Authors: Hakim Lukman , Basuki Johanes , Soemartono Triyuni , Kusworo Kusworo
Published: September 2019

This article aimed to determine and analyses the implementation of innovation forms as well as the factors supporting and inhibiting the implementation of innovation in local government level. The research was conducted in north Jakarta. The research conducted One-Stop Integrated Service Office. The results showed that the licensing office innovated to accelerate building permits, which was easy and inexpensive with describe establishing building procedures, then start a variety of innovations carried out by One-Stop Integrated Service Office one day, register IMB online, IMB 3.0, bleaching IMB. And this is an important requirement for the business world. In providing services to business operators, efforts are needed from the government to implement good services by applying transparent, participatory and accountable principles, so that the community as a group that is served will get good service. Supporting factors for service innovation in the three regions were regulation and commitment of the local governments while the inhibiting factors of innovation implementation were the limited fund and incompetent personnel in service duties.
Espaços Públicos, Planejamento e a Sustentabilidade para o turismo no Circuito Oeste Rios
Authors: Ribeiro Renata Maria , Granado Danielli Cristina , Barros de Souza Guilherme Henrique
Published: September 2019

Observadas as preocupações com a qualidade de vida do homem urbano, destacada aqui o lazer, baseadas no princípio de Le Cobusier (Carta de Atenas, 1933) em estruturas interconectadas pelo princípio: circular, morar, trabalhar e recrear: projeta-se essa discussão em um escopo geográfico voltado às cidades de interior, com populações modestas, que possuem poucas alternativas de lazer e que buscam o desenvolvimento no turismo. As cidades pequenas reduzem escalas para o estudo de problemas urbanos, principalmente em escala ambiental, podendo basear modelos de planejamento. Os municípios de Paulicéia, Panorama, Presidente Epitácio e Rosana, objetos dessa pesquisa possuem balneários públicos, os quais foram pensados e construídos para o lazer da população local. Partindo da base documental e de visitas in loco, que incluíram entrevistas com gestores municipais observou-se que não há integração entre ações para estruturar territórios para o turismo, nem mesmo ações de planejamento integrado e contínuo, que considere o uso sustentável dos recursos hídricos e das estruturas de lazer. A falta de nitidez entre as políticas de desenvolvimento para o turismo denotam ações pontuais e pouco estratégicas. Há necessidade de desenvolver pesquisas sobre demanda e fluxo de visitação, associadas a estratégias que, entre outros aspectos visem atender bem o turista e que considerem a capacidade de carga do meio. Além disso, se faz necessário o desenvolvimento de novos produtos turísticos para aumentar a permanência de visitantes na localidade e assim movimentar a economia e os serviços da cidade. Acredita-se que será necessário mudar o paradigma da gestão municipal em turismo, tendo como prerrogativa que o turismo instaura-se na ocupação de espaços e que os gestores necessitam articular políticas públicas envolvendo o planejamento territorial e a atividade turística, com vistas à sustentabilidade e a continuidade da atividade, em longo prazo.Palavras-chave: Planejamento do turismo, Circuito Oeste Rios, Balneário municipal.
CRIMINALIDADE, SEGURANÇA PÚBLICA E SUSTENTABILIDADE EM DESTINOS TURÍSTICOS
Authors: Costa Jean Henrique , Herrera Manuel Ramón González
Published: September 2019

Este estudo possui como objetivos: a) levantar trabalhos realizados, na realidade brasileira, acerca das problemáticas do turismo, da segurança pública e da criminalidade; b) realizar uma leitura crítica de cada trabalho; c) tecer um diagnóstico de seu estado da arte, visando apontar os caminhos seguidos, algumas lacunas percebidas e as possibilidades de conexões entre as pesquisas. Em termos metodológicos, trata-se de uma pesquisa bibliográfica de análise teórica. Não se prende as convenções metodológicas de uma pesquisa bibliométrica, tampouco realiza uma análise de conteúdo quantitativa com o material textual levantado. Trata-se de um livre exercício ensaístico. O recorte temporal foi estabelecido da forma mais dilatada possível, isto é, a partir do ano de publicação do primeiro trabalho encontrado até o último (2004-2018). Os trabalhos foram captados, de forma livre, no Google Acadêmico e no Portal de Periódicos da Capes. Como conclusões, verificou-se que que parte significativa dos estudos brasileiros não reproduz o alarme midiático acerca do medo social como fator determinante para o afastamento de turistas. Contudo, problematizamos que parte desses estudos, ou a quase totalidade deles, não relaciona o aumento da criminalidade (e suas múltiplas possibilidades de manifestação) com as variações da demanda turística em séries temporais dilatadas, tampouco “espacializam” a criminalidade por zonas/áreas, visando correlacionar os encontros – e desencontros – com a dinâmica do turismo. Além disso, reforçamos que parte das pesquisas também não realiza o esforço de tipificar os principais crimes contra o turista (destacando o dano, horário e local) e de que forma essa violência termina afetando a sustentabilidade dos espaços turísticos e a imagem dos lugares. Deste modo, algumas pesquisas repetem clichês já doutos no campo do turismo de que o crime e a violência sistêmica afastam o turismo, ou, no melhor dos casos, que os crimes são, em sua maioria, contra o patrimônio (por furtos e roubos).
CHOOSING APPROPRIATE IMPUTATION METHODS FOR MISSING DATA: A DECISION ALGORITHM ON METHODS FOR MISSING DATA
Authors: A. Mahmood Wisam , S. Rashid Mohammed , Wala Aldeen Teaba , Wala Aldeen Teaba
Published: September 2019

Missing values commonly happen in the realm of medical research, which is regarded creating a lot of bias in case it is neglected with poor handling. However, while dealing with such challenges, some standard statistical methods have been already developed and available, yet no credible method is available so far to infer credible estimates. The existing data size gets lowered, apart from a decrease in efficiency happens when missing values is found in a dataset. A number of imputation methods have addressed such challenges in early scholarly works for handling missing values. Some of the regular methods include complete case method, mean imputation method, Last Observation Carried Forward (LOCF) method, Expectation-Maximization (EM) algorithm, and Markov Chain Monte Carlo (MCMC), Mean Imputation (Mean), Hot Deck (HOT), Regression Imputation (Regress), K-nearest neighbor (KNN),K-Mean Clustering, Fuzzy K-Mean Clustering, Support Vector Machine, and Multiple Imputation (MI) method. In the present paper, a simulation study is attempted for carrying out an investigative exploration into the efficacy of the above mentioned archetypal imputation methods along with longitudinal data setting under missing completely at random (MCAR). We took out missingness from three cases in a block having low missingness of 5% as well as higher levels at 30% and 50%. With this simulation study, we concluded LOCF method having more bias than the other methods in most of the situations after carrying out a comparison through simulation study.
Caracterización morfológica y fisicoquímica de frutos de accesiones de guanábanas seleccionadas en Nayarit
Authors: Nolasco-González Yolanda , Hernández-Fuentes Luis Martín , Montalvo González Efigenia
Published: September 2019

En México existe una variabilidad morfológica y bioquímica del germoplasma de guanábano, debido principalmente a su propagación por semilla. Los últimos años se identificaron en Nayarit accesiones (TR, VCA1, VCA4, VCA5 y VCA10) con características sobresalientes; por lo que, en 2017 se realizó la caracterización morfológica y fisicoquímica de frutos de estas accesiones. La caracterización morfológica se realizó con los descriptores de la guía de pruebas de distinción, homogeneidad y estabilidad de la unión internacional para la protección de las obtenciones vegetales (UPOV) en anonáceas. Los parámetros fisicoquímicos se determinaron por los métodos de la AOAC. Se encontraron diferencias morfológicas en tamaño y forma de frutos, tamaño de espinas, cantidad y tamaño de semillas. En los frutos de TR y VCA4 predominó el mayor tamaño y en los VCA5 menor tamaño. La forma trapezoidal predominó en los TR y la cónica en VCA1 y VCA4. Los frutos TR y VCA10 tuvieron mayor grosor de corteza y menor tamaño de espinas; mientras que los VCA4 tuvieron espinas más grandes. Los frutos TR, VCA4 y VCA10 presentaron mayor número de semillas y el VCA5 menor número; con semillas de mayor tamaño en los TR y de menor en VCA1 y VCA4. No hubo diferencias en rendimiento de pulpa (68.7-72.4%), pero resultó directamente proporcional al tamaño de fruto (r= 0.532) con p< 0.001. En las características fisicoquímicas los frutos TR a madurez de consumo tuvieron mayor intensidad del verde de cáscara, mayor firmeza, contenido de sólidos solubles (SST) y relación °Brix/acidez.
Nuevos causantes de la pudrición en panel de pica en hule: caso Fusarium spp.
Authors: López-Moreno Bernardo , Gutiérrez Contreras Maribel , Aguirre Paleo Salvador , Vargas-Sandoval Margarita , Guzmán de Casa Atahualpa , García-Saucedo Pedro Antonio , Ávila-Val Teresita del Carmen
Published: September 2019

La pudrición mohosa en el panel de pica de hule disminuye el rendimiento y la regeneración de su corteza. El objetivo fue identificar el agente causal de la enfermedad en San Juan Bautista Tuxtepec, Oaxaca y evaluar su sensibilidad in vitro a fungicidas. Para ello se colectó tejido del panel de pica enfermo y realizaron aislamientos. Se caracterizaron los aislados en los medios nutritivos PDA (papa-dextrosa-agar), CLA (hojas de clavel-agar), FLA (fermentación líquida-agar), CDA (café-dextrosa-agar) y ZA (zanahoria-agar). Se evaluaron tasas de crecimiento y realizaron pruebas de patogenicidad en laboratorio y campo, así como de sensibilidad in vitro a Mancozeb 70%, Benomilo, Carbendazin, Propiconazol, Clorotalonil, y Carboxamida, en 10 tratamientos y ocho repeticiones. Los resultados evidenciaron cuatro aislados del género Fusarium, que mostraron polimorfismo de acuerdo con el medio de cultivo, con crecimiento radial y anillos marcados. Se observaron microconidios y macroconidios dispersos en el micelio y en esporodoquios de color blanco, naranja y azul a 36 días. La tasa de crecimiento varió con el medio nutritivo y la cepa inoculada. Se identificaron a F. circinatum, F. lateririum, F. decemcellulare y F. mangiferae. En las pruebas de patogenicidad en laboratorio todas las cepas inoculadas fueron positivas y en campo solo F. circinatum y F. mangiferae. El bioensayo de sensibilidad mostró respuesta dependiente de fungicida y aislamiento. Con estos se concluye que las especies F. circinatum, F. mangiferae, F. lateririum y F. decemcellulare pueden causar pudrición mohosa en el panel de pica del clon IAN 710. Este es un primer reporte que involucra estas especies. Su control depende de la especie de Fusarium y el fungicida utilizado.
Propiedades fisicoquímicas de frutos silvestres de Rubus con potencial nutracéutico y alimenticio
Authors: Rubio Ochoa Eréndira , Pérez Sánchez Rosa Elena , Ávila Val Teresa C. , Gómez Leyva Juan Florencio , García Saucedo Pedro Antonio
Published: September 2019

Las especies del género Rubus, comúnmente son explotados para su consumo en fresco, gastronomía regional y herbolaria tradicional, dichos beneficios son atribuidos a la presencia y acción de sus metabolitos polifenólicos como los flavonoides y antocianinas, que son conocidos por su actividad antidiabética, anticancerígena, etc. En México se reportan alrededor de 15 especies silvestres del género Rubus. No obstante, el crecimiento poblacional ha invadido su territorio, comprometiendo su desarrollo. Por lo anterior y con el fin de rescatar e incorporar en programas de mejoramiento genético los materiales silvestres, el objetivo del presente trabajo fue evaluar la composición fisicoquímica y actividad antioxidante en frutos de tres especies silvestres (Rubus adenotrichus, Rubus pringlei y Rubus glaucus Beth), comparados contra una variedad comercial (Tupy). Se colectaron frutos en el estado de Michoacán y se evaluaron parámetros fisicoquímicos, polifenoles, flavonoides, antocianinas y capacidad antioxidante (CA) en extractos etanólicos. En los resultados, la longitud del fruto vario de 1.7-2.23 cm y el peso unitario de 1.1-3.1 g, la relación de sólidos solubles totales y acidez titulable de 8.32-14.76. Los polifenoles totales reportaron datos de 285.06-592.61 mg EAG/100 g PF, flavonoides totales de 93.13-36.4 mg EQ/100 g PF y antocianinas de 18.43-4.32 mg L-1. La CPA de 65.7-25.15 μM ET/g PF. Este estudio demostró que las especies silvestres cumplen con características fisicoquímicas y nutracéuticas para ser incorporadas en programas de fitomejoramiento o la industria farmacéutica.
Identificación del ácaro y el patógeno asociado a la malformación floral de mango en Gabriel Zamora, Michoacán
Authors: Ayala-Ortega José de Jesús , Gutiérrez-Cuevas Osiel Adrián , Ávila-Val Teresita del Carmen , Vargas-Sandoval Margarita
Published: September 2019

Dentro de los factores que limitan la producción de mango, los ácaros son uno de los más importantes debido a la asociación que tienen con patógenos que dañan al cultivo. Los objetivos de este trabajo fueron identificar los ácaros y patógenos asociados a la malformación floral del mango, así como los ácaros en follaje en un huerto de Gabriel Zamora, Michoacán. Se tomaron muestras de follaje y de malformaciones de la inflorescencia de mango en un huerto del municipio de Gabriel Zamora de noviembre de 2015 a enero 2016, las cuales se llevaron al laboratorio para realizar una disección del materia vegetal y realizar montajes de las especies de ácaros colectadas; de igual manera se sembraron en medio PDA los ácaros asociados a la malformación y se separaron las colonias de hongos que germinaron en el medio, para finalmente identificarlos con claves taxonómicas. Se identificó a Aceria mangiferae y Fusarium mexicanum como el ácaro y el hongo asociado a la malformación de la inflorescencia del mango, así como a Oligonychus mangiferus como la especie de ácaro asociado al follaje en Gabriel Zamora, Michoacán.
YAS SÜRECİNDEKİ ERGENLERİN DİSSOSİYATİF YAŞANTILARI VE PSİKOLOJİK BELİRTİLERİNİN İNCELENMESİ
Authors: AVCI Mahsun
Published: September 2019

Yas,
bireylerin geri dönüşü olmayan bir kayba karşı gösterdiği doğal bir tepki
olarak tanımlanabilir. Yası olan bir birey intihar, öfke, maddeyi kötüye
kullanma, kendini suçlama, kişiler arası duyarsızlık, kimlikte ayrışma, geçmiş anıları hatırlayamama, depresif davranışlar
sergileme gibi problemler yaşar. Bu çalışmada yas sürecindeki bireylerin
dissosiyatif yaşantıları ve psikolojik belirtilerinin incelenmesi amaçlanmaktadır.
Araştırma grubunu 92 lise öğrencisi oluşturmaktadır. Veri toplama yöntemi
olarak, amaçlı örnekleme yöntemi kullanılmıştır. Araştırmadan elde edilen
verilerin analizinde betimsel analizler kullanılmıştır. Verilerin analizinde
betimsel istatistik, değişkenler arasındaki ilişkiyi incelemek için Pearson
korelasyonu kullanılmıştır. Araştırmanın sonuçları göre, yas düzeyi ile
psikolojik belirtiler, dissosiyatif yaşantılar arasında orta düzeyde pozitif
yönlü bir ilişkinin olduğu görülürken, aynı şekilde psikolojik belirtiler ile
dissosiyatif yaşantılar arasında da orta düzeyde pozitif yönlü bir ilişkinin
olduğu görülmektedir.
A Tale of Two Roofs: A Large Private Organization Achieves High Performance but Reverts to Traditional Procurement Practices
Authors: Rivera Alfredo , Kashiwagi Jacob
Published: September 2019

The Best Value Approach (BVA) is a new project delivery method that has been documented to increase performance and value. It does this by changing the traditional project delivery characteristics of managing the expert and focusing on the technical side of the project, to utilizing the expertise of the experts and using performance information and risk mitigation to manage the project. Large organizations have had difficulty in sustaining the BVA. A large private organization agreed to test the BVA on the replacement of a roofing system on one of its facilities. A case study research was performed on this project, using the grounded research approach, to identify if a large supply chain stakeholder can utilize the BVA to sustain high performance, value, and low price at the same time in a highly competitive marketplace. The research proposal is to document issues and benefits of utilizing the BVA. Identifying why large organizations have an issue with sustaining the approach and being utilized on more projects. The results of the paper will identify issues organizations have with implementing the BVA and the benefits in using the delivery system on construction services. The case study utilizes a stakeholder in the roofing industry supply chain and shows an approach to construction services that utilizes performance information and risk mitigation.
Daya Terima Minuman Sari Buah Pisang Tongka Langit dengan Perlakuan Lama Blansing
Authors: Lawalata Vita N , Tetelepta Gilian
Published: September 2019

Tongka langit banana is one of specific local fruits in Maluku Province, and is potential to be developed due to its good nutritional contents. The purpose of this research was to determine the exact blanching time on the acceptance of tongka langit banana juice drink. An experimental research with different blanching time, i.e 5, 10, 15, and 20 minutes replicated twicw was applied in this study. Results showed that tongka langit banana juice drink treated with 5-minute blanching time had the best acceptance level sensorically, that is yellow in colour (3.23), had banana like taste (3.14), no off flavour aroma (1.46), had aroma almost like banana (2.86) and a little bit cloudy (2.17).

Keywords: acceptance, blanching, fruit juice, tongka langit banana

 

ABSTRAK

Pisang tongka langit merupakan salah satu jenis buah lokal yang khas di Provinsi Maluku, dan berpotensi dikembangkan karena memiliki nilai nutrisi yang baik. Tujuan penelitian ini untuk menentukan lama blansing yang tepat terhadap daya terima minuman sari buah pisang tongka langit. Penelitian ini merupakan penelitian eksperimental dengan perlakuan lama blansing 5, 10, 15, dan 20 menit, yang diulang sebanyak dua kali. Hasil penelitian menunjukkan bahwa Minuman sari buah pisang tongka langit dengan perlakuan lama blansing 5 menit memiliki tingkat penerimaan terbaik secara organoleptik, yaitu warna kuning (3,23), berasa pisang (3,14), tidak beraroma langu (1,46), mendekati beraroma pisang (2,86), dan agak keruh (2.17).

Kata kunci: blansing, daya terima, sari buah, pisang tongka langit
Analisis Mutu Dodol Rumput Laut Eucheuma cottonii Dengan Penambahan Tepung Maizena dan Sari Buah Nenas
Authors: Setha Beni , Arfah Hairati , Pattipeilohy Ferdinand
Published: September 2019

Seaweed dodol is processed using basic ingredients such as Eucheuma cottonii seaweed and additives such as sugar, flour, coconut milk, salt, vanilla and other additives as well. This study was aimed to study the effect of both maizena flour and pineapple juice extract addition on the quality of seaweed dodol. Two factors of treatments were applied in this study, namely maizena flour with six levels of concentrations (0%, 10%, 20%, 30%, 40%, and 50%), and pineapple juice extract with six levels of concentrations (0%, 1%, 2%, 3%, 4%, and 5%). Sensory data of seaweed dodol were analyzed using the Friedman test, while crude fiber, protein, fat, moisture, carbohydrate and ash contents were analyzed using a descriptive statistic method. The results showed that the best sensory values (appearance, smell, taste and texture) were obtained by seaweed dodol with the treatment of 30% maizena flour and 1% pineapple juice extract. The average crude fiber, protein, fat, moisture, ash and carbohydrate contents of seaweed dodol with this treatment was 4.24%, 1.65%, 1.79%, 23.74%, 0.74% and 72.09%, respectively.

Keywords: dodol, Eucheuma cottonii, maizena flour, pineapple extract

 

ABSTRAK

Dodol rumput laut diolah dengan menggunakan bahan dasar berupa rumput laut jenis Eucheuma cottonii dan bahan tambahan seperti gula, tepung, santan kelapa, garam, vanili dan lainnya. Penelitian ini bertujuan untuk mempelajari pengaruh penambahan tepung maizena dan ekstrak buah nenas terhadap kualitas dodol rumput laut. Perlakuan yang diberikan dalam penelitian ini terdiri atas dua faktor, yaitu konsentrasi tepung maizena (0%, 10%, 20%, 30%, 40%, dan 50%), dan konsentrasi sari buah nenas (0%, 1%, 2%, 3%, 4%, dan 5%). Data organoleptik dodol rumput laut dianalisis menggunakan uji Friedman, sedangkan data kadar serat kasar, kadar protein, kadar lemak, kadar air, kadar karbohidrat dan kadar abu dianalisa menggunaka statistik deskriptif. Hasil penelitian menunjukkan bahwa nilai organoleptik (kenampakan, bau, rasa dan tekstur) dodol rumput laut yang terbaik adalah perlakuan konsentrasi tepung maizena 30% dan konsentrasi ekstrak nenas 1%. Rata-rata kadar serat kasar dodol rumput laut pada perlakuan tersebut sebesar 4,24%, sedangkan kadar protein sebesar 1,65%, kadar lemak sebesar 1,79%, kadar air sebesar 23,74%, kadar abu sebesar 0,74% dan kadar karbohidrat sebesar 72,09%.

Kata kunci: dodol, Eucheuma cottonii, sari buah nenas, tepung maizena