bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANALISIS UNJUK KERJA MESIN DIESEL DENGAN BAHAN BAKAR CAMPURAN PERTADEX DAN BIODIESEL DARI BIJI KEMIRI
Authors: Wafir Moh. , Listyadi Digdo , Sakura Rahma Rei 
Published: September 2020

The decline in fuel oil production has led to the development of alternative fuels that are renewable and more environmentally friendly. An alternative fuel that can be developed is biodiesel. In this study aims to develop alternative biodiesel fuels as a substitute for fossil oil fuels that are feasible applied to diesel engines. This study conducted a diesel engine performance test using mixed fuel from pertadex and biodiesel Aleurites Moluccana with a variation of biodiesel mixture B10, B20, and B30. From the test results using a mixture of biodiesel, the ef ective power and torque produced by the engine decreases compared to using pure pertadex. Among the three variations of the biodiesel mixture, the best ef ective power produced by B10 fuel is 277 Watt and the best torque produced by B10 fuel is 1,238 Nm. Specific fuel consumption in all biodiesel blends is increased compared to pure pertadex. Among the three variations of the biodiesel mixture, the best specific fuel consumption produced by B30 fuel is 1197,67 g/kWh. The thermal ef iciency in all biodiesel blends is increased compared to pure pertadex in B20 and B30 blends. Among the three variations of the biodiesel mixture, the best thermal ef iciency produced by B20 fuel is 7,883 %. The opacity of the engine exhaust gas produced in all biodiesel mixes is getting better compared to using pure pertadex. The best opacity of the engine exhaust gas produced in the use of B30 fuel is 2,3% HSU.
Keywords: Biodiesel, Aleurites Moluccana, Diesel Engine Performance, Opacity
KARAKTERISTIK SPRAY BAHAN BAKAR CAMPURAN MINYAK DIESEL DAN BIODIESEL CALLOPHYLLUM INOPHYLLUM
Authors: Azis Muhammad Lutfi , Hakim Lukman , Ilminnafik Nasrul 
Published: September 2020

The characteristic of spray largely determines of combustion quality. Before testing the fuel of diesel engine, characteristic of spray is needed to know. Biodiesel made from nyamplung seeds (callophyllum inophylum) mixed with diesel oil for spray characteristics test. The research was conducted at 1 atm ambient pressure, 15 MPa injection pressure. The fuel used Oil diesel added biodiesel variation B0, B20, B30, dan B100. The fuel mixture sprayed by nozzle tester and recorded using a 480 fps camera at 224x168 resolution to cognize spray tip penetration and spray angle. The result of research showing viscosity of fuel mixture has huge impact on spray characteristic. At high viscosity, longer spray tip penetration longer and smaller spray angle. Its affects the homogeneity of the mixture of fuel and the air.
Keywords: spray characteristic, biodiesel, callophyllum inophylum
КЛИНИЧЕСКАЯ ХАРАКТЕРИСТИКА КОРОНАВИРУСНОЙ ИНФЕКЦИИ COVID-19 У ДЕТЕЙ
Authors: Горелов Александр , Николаева Светлана , Акимкин Василий 
Published: September 2020

Новая коронавирусная инфекция COVID-19 поражает людей всех возрастных групп, характеризуется разнообразной клинической симптоматикой с поражением не только респираторного тракта, но и других органов и систем, отсутствием этиотропной терапии и довольно высокой летальностью.
Цель: определить клинические особенности новой коронавирусной инфекции COVID-19 у детей.
Результаты.
У 18,2% детей в дебюте болезни отмечено повышение температуры, при этом гипертермия выше 39°С была выявлена лишь у 3,5% детей. Кашель регистрировался в 50,8% случаев. Ринит/ринофарингит развивался лишь у каждого четвёртого ребенка. Такие патогномоничные для COVID-19 симптомы как потеря обоняния (аносмия) и вкуса (агевзия) регистрировались у детей только в 17% случаев. Доля пневмонии среди детей, получавших стационарное лечение, составила 4,4%, при этом 2/3 детей были старше 3 лет (р<0,001).
Заключение. Наиболее частыми клиническими проявлениями являются кашель и повышение температуры тела (не выше фебрильных значений), катаральные симптомы при первичном обращении за медицинской помощью регистрируются лишь у каждого четвёртого ребёнка.
Traveler’s Willingness to Accept and Provide Carpooling Services: A Case Study in Beijing
Authors: Xiao Lingling , Zhou Zhitian 
Published: September 2020

AbstractCarpooling as a transportation demand management (TDM) tool is currently being prevalent in major Chinese cities and producing much diminishment in the frequency of solo-driving trips. Meanwhile, much disputes relating to carpooling is arising. To better understand the acceptance and the influence factors of carpooling, this paper investigates travelers’ willingness to provide and accept carpooling services. Firstly, a questionnaire survey was conducted. Secondly, we proposed a theoretical model, both car-owners and non-car-owners were sampled as respondents, and a multi-variable regression method was employed to analyze the survey data. Finally, we found that the higher acceptance, the more positive reactions to carpooling. The results indicate that it is necessary to improve the public’s acceptance of carpooling, because lower acceptance will lead to more negative reactions towards the carpooling, which may weaken its effectiveness.
Statistical analysis of teachers' digital competence levels
Authors: Avilkina S. V. 
Published: September 2020

Purpose of the study. The study of the qualitative parameters of the human resources potential of the economy is necessary to describe the conditions in which digitalization processes develop, to identify the problems of training specialists. The professional education system is considered in the article as an institution that provides human resources to the digital economy of the region. Innovative processes increase the requirements not only for the system of training specialists, but also for the skills of the lecturer, individual level of mastering information and communication technologies. The purpose of this study is to diagnose the levels of digital competencies of lecturers of professional educational institutions and to identify, on the basis of statistical analysis, the impact on the level of digital competencies of a lecturer of various parameters, such as the lecturer’s age; the disciplines he/her teaches; the data of continuing education in the field of information and communication technologies.Materials and methods. This paper provides an overview of approaches to solving the problems of staffing education in the context of informatization. Taking into account the proposed model of digital competencies of lecturers, the testing complex was approved. Methods of statistical data analysis were applied: descriptive statistics, correlation coefficients were calculated, a range diagram and scatter diagrams of lecturers' testing results were constructed. For the information processing, the qualitative indicators were converted into quantitative ones and the statistical analysis software packages were used: Microsoft Excel and STATISTICA 10.0.Results. As a result of the lecturers’ testing of professional educational institutions and statistical analysis, data were obtained on the level of human resources in terms of the formation of knowledge and skills in the field of information and computer technologies. The relationship between the level of digital competence and various factors has been identified. The factors that were analyzed in the course of the study: age, subjects taught, the period of limitation of the advanced training in the field of information and communication technologies.Conclusion. The introduction of the proposed model of competencies and diagnostic methods will allow diagnosing lecturers' skills in working in a digital environment and will ensure the adoption of informed managerial decisions in the development of the human resources of the vocational education system both at the level of the educational organization and at the level of public administration bodies. This model can be used to obtain information about the formation of digital competencies of different groups: employees of organizations and enterprises, state and municipal employees.
Construction of an Economically Effective System of Target Indicators for the Development of University Research Activities Considering Correlation Dependencies
Authors: Sandler D. G. , Gladyrev D. A. 
Published: September 2020

The development programs of Russian universities contain many different target indicators. Many of these indicators are focused on the development of the research activities. In the context of limited financial resources for development, the question of an effective system of target indicators is very important. To construct such a system of target indicators, three conditions must be met: 1) these target indicators do not contradict each other; 2) there are indicators with a positive effect on economic indicators; 3) subject areas are taken into account.The aim of the research. This study is aimed to study linear correlation dependencies between the main indicators measuring the university’s publication activity and other scientometric, social and structural indicators.Materials and methods. The study used economic, structural and scientometric data for 49 largest universities in Russia over 4 years, downloaded from monitoring the performance of educational institutions of higher education and the SciVal analytical tool.Results. As part of the research, it was studied which variables are correlated with the taken scientometric variables. Due to the large number of variables involved in the primary analysis, the table contains only those variables that correlate with the variables under consideration with a correlation coefficient of more than 0.3 modulus.Conclusion. The results obtained allow both to resolve the contradiction of the simultaneous increase in the number and quality of publications, and to highlight a number of links between scientometric indicators and indicators of university economics, internationalization and quality of admission. Knowledge of these dependencies is useful for compiling university development programs that do not contain internal contradictions. The conclusions obtained make it possible to increase the efficiency of construction a system of university target indicators in the research field in three areas: compiling the university development program with consistent target indicators, the inclusion of indicators with a positive impact on economic indicators, taking into account the peculiarities of the field of science and education in which the university operates.
PENGARUH LINGKUNGAN KELUARGA, EFIKASI DIRI DAN PRESTASI BELAJAR EKONOMI TERHADAP PERILAKU ANTI KORUPSI
Authors: Muwardi Eko Siam , Muhson Ali 
Published: September 2020

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh lingkungan keluarga terhadap efikasi diri, pengaruh lingkungan keluarga terhadap prestasi belajar ekonomi, pengaruh efikasi diri terhadap prestasi belajar ekonomi, pengaruh efikasi diri terhadap perilaku anti korupsi, pengaruh prestasi belajar ekonomi terhadap perilaku anti korupsi dan pengaruh lingkungan keluarga terhadap perilaku anti korupsi pada siswa SMAN 1 Karanganyar Kabupaten Kebumen. Penelitian ini merupakan penelitian ex-post facto dengan menggunakan pendekatan kuantitatif teknik analisis jalur (path analisis). Hasil penelitian menunjukkan bahwa; Lingkungan keluarga berpengaruh positif dan signifikan terhadap efikasi diri. Lingkungan keluarga tidak berpengaruh positif dan signifikan terhadap prestasi belajar ekonomi. Efikasi diri tidak berpengaruh positif dan signifikan terhadap prestasi belajar ekonomi. Efikasi diri berpengaruh positif dan signifikan terhadap perilaku anti korupsi. Prestasi belajar ekonomi tidak berpengaruh positif dan signifikan terhadap perilaku anti korupsi. Lingkungan keluarga tidak berpengaruh positif dan signifikan terhadap perilaku anti korupsi.Abstract: This study aims to find out: the effect of the family environment on the self-efficacy, the effect of the family environment on the economics learning achievement, the effect of the self-efficacy on the economics learning achievement, the effect of the self-efficacy on the anti-corruption behaviour, the effect of the economics learning achievement on the anti-corruption behaviour, and the effect of the family environment on the anti-corruption behaviour among students of SMAN 1 Karanganyar, Kebumen Regency. This research was an ex post facto study using the quantitative approach. The data were collected using questionnaires and documentation and were analyzed using the path analysis technique. The results of the study are as follows. The family environment variable has a significant positive effect on the self-efficacy and on the economics learning achievement. The self-efficacy variable does not have an effect on the economics learning achievement. The self-efficacy variable has a significant positive effect on the anti-corruption behavior. The economics learning achievement does not have an effect on the anti-corruption behavior. The family environment variable has a significant positive effect on the anti-corruption behavior.
Investigating the Effects of Government Expenditure and Money Supply on Unemployment in Namibia
Authors: Shigwedha Wilhelmine Naapopye , Kaulihowa Teresia 
Published: September 2020

This paper examines how government expenditure and money supply affect unemployment in Namibia. It employs the ARDL and ECM estimation techniques to establish the underlying relationship for the period 1980-2018. The results support the hypothesis that government expenditure and money supply can be used to contain unemployment. Additionally, an evidence of both long and short-run causality from government expenditure and money supply to unemployment is found. Practical policy implications indicate that in order to effectively combat unemployment problem in Namibia, the study recommends that there is a need for policy makers to ensure that the goal of employment creation is mainstreamed in all relevant fiscal and monetary policies responses in the country. Moreover, there is also a need to identify and propose policies that can help to do away with the lack of effective policy interventions
The Effect of Capital Structure, Liquidity, and Company Size towards Profitability
Authors: Pandapotan Joy , Lastiningsih Noegrahini 
Published: September 2020

This study aims to determine the effect of capital structure, liquidity, and company size on profitability in state-owned companies listed on the Indonesian state-owned enterprise website in 2016 - 2018. This research uses a quantitative approach. This study uses secondary data from company financial and annual report, the sample consists of 65 stated-owned companies. The data analysis technique in this study uses multiple linear regression, classic assumption test, and the hypothesis test consists of the t-test. Based on the results of data analysis known that capital structure has a insignificant negative effect on profitability, liquidity has a significant positive effect on profitability, and company size has a significant negative effect on profitability. The results of this study are expected to be useful for managers in making decisions related to company management, beneficial for investors in choosing investments, and being useful as a reference for further researchers who studying profitability variables
Lexical and Grammatical Metaphors in Newsweek
Authors: Nasution Sarah , Saragih Amrin , Gurning Busmin 
Published: September 2020

This study investigates lexical and grammatical metaphors in Newsweek Weekly Magazines. The objectives of the study are to identify what lexical and grammatical metaphors used in Newsweek, to describe the way those metaphors are used, and to explain why the Newsweek use those lexical and grammatical metaphors. A qualitative descriptive research was applied. The data were taken from eight texts published on November and December in 2010. The data were collected by selecting the texts contained the issue of Barack Obama, The President of United States of America because of his visit to Indonesia on November. As the result, the use of lexical and grammatical metaphors has been found in Newsweek. The metaphors in Newsweek realized into four types of lexical metaphors and eight groups data of grammatical metaphor. The Newsweek used more grammatical metaphor than Lexical metaphor in order to make information contained in Newsweek it more coherent and compact, and to help readers more easily understand the information. Keywords: metaphors; lexical; grammatical; mass media
The Effect of Teaching Strategies and Learning Styles on the Students’ Achievement
Authors: Amin Teguh Satria , Setia Eddi , Sihombing Lince 
Published: September 2020

This research investigates 1) students’ achievement in reading comprehension taught by using Direct Reading Thinking Activity (DR-TA) strategy is higher than taught by using Know, What to Learn, and Learned (KWL) strategy, 2) students’ achievement in reading comprehension with impulsive learning style is higher than students’ achievement in reading comprehension with reflective learning style, and (3) there is interaction between teaching strategies and learning styles on the students’ achievement. Two classes containing of 70 students were chosen as sample by apllying cluster random sampling technique. The experimental group 1 was treated by using DR-TA and the experimental group 2 was treated by using KWL. The students’ achievement was measured by using test. The questionnaire was conducted to find out the students’ learning style. The data were analyzed by applying two-ways analysis of variance. The findings show that (1) the students’ achievement in reading comprehension taught by using DR-TA higher than using KWL; (2) students’ achievement in reading comprehension with impulsive learning style is lower than that with reflective learning style; (3) there is interaction between teaching strategies and learning styles on the students’ achievement in reading comprehension. The analysis revealed that the teaching strategies significantly affected the students’ reading achievement. Keywords: DR-TA, KWL, Impulsive Learning Style, Reflective Learning Style, Reading Comprehension
Improving Students’ Achievement in Reading Comprehension Through Advance Organizer Strategy
Authors: Siregar Tuti Andriani , Santoso Didik , Pulungan Anni Holila 
Published: September 2020

This study deals with the improvement of the students’ achievement in reading comprehension through advance organizer strategy. The objectives of this research were to improve the students’ achievement in reading comprehension as well as the process of learning reading comprehension by using advance organizer strategy. The subject of the study was grade XI IPA 2 Madrasah Aliyah Negeri Binjai consisting of 33 students. The data of this study were obtained by using test, observation sheets and interview. This research was conducted in two cycles because in the pre-test (without treatment), the average of the students’ score was 59,24. In the first cycle test, it was 74,30. It is lower than the minimum passing grade, and if is viewed from the observation sheets, the situation of the learning process hasn’t met the criteria of the success. So the writer continued to the second cycle. There was a significant progress on the students’ achievement in reading comprehension in the second cycle, and the average of the students was 82,94. The students were more active and enthusiastic in following the lesson. Therefore, the teaching reading comprehension through advance organizer strategy can improve the students’ achievement in reading comprehension quantitatively and qualitatively. Key words: improving, reading comprehension, advance organizer strategy.
Pragmatic Features In The Utterances Of Male And Female Of Siladangnese
Authors: Minda Sri , Murni Sri Minda , Zein T. Tyrhaya 
Published: September 2020

The objective of this study is to describe the pragmatic features of tag question and hedge in the utterances of male and female of Siladangnese. The research was designed with qualitative descriptive method. The data were obtained by implementing participant observation and interview. The finding shows that there are two types of pragmatics features of tag question in the utterances of male and female of Siladangnese. Five pragmatic features of hedge in the utterances of male and female of Siladangnese found; a) hedge as a means of protection, b) hedge as a means of certainty, c) hedge as a means of uncertainty, d) hedge as a means of politeness, and e) hedge as a means of limitation. Male Siladangnese tend to utter modal tag as a sign of uncertainty while female Siladangnese tend to utter affective tag as a sign of politeness. One of the pragmatic features of hedge in the utterances of female Siladangnese is a means of politeness, but it was not found in the utterances of male Siladangnese. The total number of tag question and hedge in the utterances of male and female of Siladangnese is different but it did not show a significant differences. Keywords: Pragmatic feature; tag question; hedge; gender.
The Structure of English Classroom Discourse in SMP Negeri 1 Tebing Tinggi
Authors: Siregar Eva Novelia , Sinar T. Silvana 
Published: September 2020

This study is concerned with the structure of English classroom discourse in SMP Negeri 1 Tebing Tinggi. The objectives of this study were to describe the structures of English classroom discourse, to describe how the structures are linguistically realized and to reason for the realizations of the English class structure. The source of the data in this study was English teachers and also the students while the data are the utterances from the teacher and the students and semiotic markers as marked in the text. The instruments used for colleting data were video tape recorder and researcher’s fieldnote. The data were collected by observing and recording the utterances uttered by the teachers and students and writing all semiotics then classified them into types of exchanges as Sinclair and Coulthard theory. The research result mentioned that he structure of English classroom were teacher elicit, teacher direct, teacher information, boundary, pupil elicit, check, repeat, reinforce and reinitiating (II). These structures were dominantly realized by IR structure. English as a foreign language was also one point made the students afraid of uttering the utterances in teaching learning process. Keywords: classroom discourse, pattern, Sinclair and Coulthard theory, structures.
Presupposition Triggers in Editorials of the Jakarta Post
Authors: Fitriani Eka Surya , Murni Sri Minda 
Published: September 2020

The objectives of the study were to find out: (1) the realization of presupposition triggers in editorials of The Jakarta Post (2) the reasons for using presupposition triggers. The study was descriptive qualitative. The source of data was The Jakarta Post online website. The data of the study were the sentences or clause which triggered the presupposed meaning in editorials. The data were identified, analyzed, and categorized based on Levinson’s theory. The findings of the study showed that: (1) 12 from 13 presupposition triggers were found namely: definite description, factive verb, implicative verb, change of state verbs, judging verbs, iterative item, cleft sentences, questions, temporal clause, comparison clause, counterfactual conditional sentence and non-restrictive relative clause, while implicit cleft with stressed constituents was not found. (2) The reasons were a) commonly to present the background information which is assumed to be true, b) to recall the readers toward the information of the event that they have not unintentionally acknowledged, c) to interpret the editorialists’ attitude on the fact of the event and d) to awaken the readers’ curiosity to the questioning things. Keywords: Editorials, Presupposition Triggers, Levinson theory.