1,720,958 research outputs found
PENGARUH SISTEM PEMBAKARAN TERHADAP JENIS DAN KONSENTRASI GAS BUANG PADA SEPEDA MOTOR BERDASARKAN TAHUN PEMBUATAN DENGAN SISTEM PENGAPIAN AC DAN DC
Get PDFPenelitian ini dilakukan untuk mengetahui konsentrasi emisi gas buang yang dihasilkan sepeda motor tahun pembuatan 2005, 2006, dan 2007 masing-masing 3 motor setiap tahunnya. Pengukuran dilakukan menggunakan PEM (Portable Emissions Analyzer???9004) dengan variasi putaran mesin 1500, 2600, 4000, dan 5600. Hasil penelitian menunjukkan setiap putaran mesin sepeda motor dinaikkan maka konsentrasi CO dan NOx meningkat. Bertambahnya kecepatan dan tingginya konsumsi bahan bakar serta tingginya suhu ruang mengakibatkan terjadi pembakaran yang tidak sempurna. Pembakaran yang tidak sempurna inilah yang mengakibatkan tingginya emisi gas buang yang dihasilkan. Walaupun konsentrasi terus meningkat namun, masih dibawah standar baku mutu Peraturan Menteri Negara Lingkungan Hidup Nomor 12 Tahun 2010 yaitu 4,5 % untuk sepeda motor empat langkah dengan sistem pengapian AC-CDI dan DC-CD
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
PENGARUH MODEL PEMBELAJARAN LANGSUNG DENGAN PENDEKATAN MULTIPLE INTELLIGENCES TERHADAP SIKAP DAN HASIL BELAJAR FISIKA PESERTA DIDIK KELAS XI IPA SMA 1 LIMBUNG
Get PDFABSTRAKTelah dilakukan penelitian yang bertujuan untuk mengetahui pengaruh pendekatan multiple intelligences melalui model pembelajaran langsung terhadap sikap dan hasil belajar Fisika peserta didik kelas XI IPA di SMA 1 Limbung. Selain itu, penelitian ini juga bertujuan untuk mengetahui besarnya korelasi antara sikap dan hasil belajar Fisika peserta didik kelas XI IPA setelah diajar dengan pendekatan multiple intelligences melalui model pembelajaran langsung di SMA 1 Limbung.Penelitian ini merupakan jenis penelitian true eksperimen dengan desain posttest only group design. Lokasi penelitian bertempat di SMA 1 Limbung. Variabel dalam penelitian terdiri dari dua variabel yaitu variabel bebas (pendekatan pembelajaran) dan variabel terikat (sikap dan hasil belajar Fisika). Instrumen yang digunakan dalam penelitian ini berupa tes sikap dan hasil belajar. Tes ini akan diberikan kepada kelas eksperimen dan kelas kontrol setelah pembelajaran selesai. Teknik analisis data menggunakan analisis statistik deskriptif dan analisis statistik inferensial.Statistik deskriptif digunakan untuk mendeskripsikan sikap dan hasil belajar peserta didik yang diperoleh. Selanjutnya, statistik inferensial digunakan untuk menguji hipotesis. Hasil penelitian menunjukkan bahwa untuk sikap siswa terhadap Fisika diperoleh nilai sig. = 0,001 < sig
The Effect Of Intellectual, Emotional, And Spiritual Intelligence On The Economic Learning Achievement Of SMA Negeri 1 Soppeng
Get PDFThis study aimed to examine the effect of intellectual intelligence on the students’learning achievement, the effect of emotional intelligence on the learning achievement students, the effect of spiritual intelligence on the learning achievement students, and stimulatingly examine the effect of intellectual, emotional, and spiritual intelligence on the economic learning achievement of students in SMA Negeri 1 Soppeng, Soppeng. Afterward, this study included as descriptive quantitative study. Population the study was all students of SMA Negeri 1 Soppeng which is 955 students. For the sample, 90 students were chosenusing simple random sampling technique. Further, data collection techniques used was questionnaire and documentation. Meanwhile, data analysis techniques used was descriptive analysis, analysis test requirements, and data analysis used SPSS 21 program. The result of this study showed that (1) intellectual intelligence variable significantly influenceon the economic learning achievement of students; (2) emotional intelligence variable significantly influencesthe economic learning achievement of students; (3) spiritual intelligence variable significantly effects the economic learning achievement of students; and (4) There was significant variables of intellectual, emotional, and spiritual intelligence on the economic learning achievement. Determination coefficient of X1, X2, and X3 to Y (r2Y.123) was 0,153 which showed that intellectual, emotional, spiritual intelligence factors have contribution to influence the economic learning achievement of students in SMA Negeri 1 Soppeng that was 15,3%, while 84,7% was influenced by another variable that was not analyzed further. DOI: https://dx.doi.org/10.17977/um014v13i12020p05
An Analysis of EFL Students’ Difficulties in Writing At The Second Grade of SMAN 1 Wundulako
Get PDFThis research was conducted to investigate the most difficult aspect faced by students in writing. The research question addressed in this research was: “what is the most difficult aspect faced by the students in writing?”.The design of this research was a case study. In conducting this research, the researcher took class XI IPA 1 of SMAN 1 Wundulako as a subject of the research with considerable that the class have the low est score in writing. The researcher used two kinds of data collection. They were questionnaire and interview. The sample of the research was class IX IPA 1 which consisted of 28 students. While in analyzing the data, the researcher analyzed the data of questionnaire by using the formula which proposed by Nazir and for the data of interview the researcher used technique of data analysis proposed Ngabut such as data reduction, data display and verifying and conclusion.
In representing the analysis, it was found out that the students of SMAN 1 Wundulako especially in the second grade class XI IPA 1 got four difficulties in writing. They were content organization vocabulary and grammar. From four aspects of three components, the vocabulary mastery aspect was considered as the difficult aspects that faced by the students in writing. The third statement of vocabulary aspect in the questionnaire was a difficulties that often faced by the students. It was shown by the result of questionnaire and interview with the percentage 3,53 mean and writng test also to support its students lack vocabulary, its concluded students of SMAN 1 Wundulako difficulties in writing
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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