bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Kualitas Soal Buatan Guru Pendidikan Pancasila dan Kewarganegaraan (PPKn)
Authors: Adawiah Rabiatul , Ruchliyadi Dian Agus 
Published: February 2020

Tujuan penelitian ini adalah untuk mengetahui kualitas soal Pendidikan Kewarganegaraan dari aspek daya beda soal, tingkat kesukaran dan efektivitas pengecoh. Penelitian ini merupakan penelitian evaluasi. Evaluasi dalam penelitian ini dilakukan terhadap butir soal mata pelajaran Pendidikan Kewarganegaraan kelas XI pada penilaian akhir semester ganjil di SMA Negeri 6 Banjarmasin Tahun pelajaran 2018/2019 yang berjumlah 50 soal, dengan subjek penelitian 200 orang siswa. Data yang dikumpulkan berupa : (1) lembar Soal Ujian Akhir Semester, (2) lembar kunci jawaban soal, dan (3) lembar jawaban siswa. Semua data tersebut diperoleh dengan teknik dokumentasi. Analisis data menggunakan program AnBuso versi 8.0. Hasil penelitian ini menunjukkan bahwa indeks daya beda butir soal 18% berkategori baik, 26% berkategori sedang, dan 56% berkategori jelek. Untuk tingkat kesukaran, 58% berkategori mudah, 16% berkategori sedang dan 26% berkategori sulit. Sedangkan untuk keefektifan pengecoh, 58% berkategori sangat baik, 26% berkategori baik, 14% berkategori jelek dan 2% berkategori sangat jelek. Dari hasil analisis indeks daya beda soal, tingkat kesukaran, dan efektivitas pengecoh dapat diketahui bahwa kualitas butir soal Pendidikan Kewarganegaraan 10% berkualitas baik, 14% perlu revisi pengecoh, 20% cukup baik, dan 56% berkualitas tidak baik. Kata kunci: indeks daya beda soal, tingkat kesukaran, pengecoh
KARAKTERISTIK BERPIKIR KREATIF SISWA KELAS VII SMP N 1 KRAGAN DALAM MEMECAHKAN DAN MENGAJUKAN MASALAH MATEMATIKA MATERI PERBANDINGAN DITINJAU DARI GAYA KOGNITIF
Authors: Argarini Dian Fitri , Budiyono Budiyono , Sujadi Imam 
Published: February 2020

<p><strong>Abstract:</strong> The research objectives were to determine and to describe creative thinking characteristic of 7<sup>th</sup> grade students of SMP N 1 Kragan in solving and proposing problem at comparative case seen from the cognitive style. This research belonged to descriptive research by qualitative-explorative approach. The sample was taken by purposive sampling technique. The subjects being used in this research were 4, those were 2 students with field dependent cognitive style and 2 students with field independent cognitive style. The subject grouping based on cognitive style was taken by group embedded figures test. There were two instruments that were used to collect the data of this research. The first instrument was solving and proposing problem test instrument. The second was interview guidance. They were validated by using the time triangulation test and the reference fulfillment. The data were analyzed using a Miles and Huberman’s concept, that was data reduction, presentation, and conclusion.. The results of this research show as follows, (1) Creative thinking characteristics of students who had field dependent cognitive style in solving and proposing problem were as follows. The fluency aspect was shown by the students through 4 stages of creative thinking process, both in solving and proposing the problem. The four stages were preparation stage, incubation stage, illumination stage, and verification stage. The flexibility aspect in solving problems appeared when the students gave the other alternative answer, whereas this aspect was not fulfilled in proposing the problems. The originality aspect was not fulfilled in solving and proposing problems. (2) Creative thinking characteristics of students who had field independent cognitive style in solving and proposing problem were as follows. The fluency aspect was shown by the students through 4 stages of creative thinking process, both in solving and proposing the problem. The four stages were preparation stage, incubation stage, illumination stage, and verification stage. The flexibility aspect in solving problems was shown when the students gave the other alternative answer, while in proposing the problem this aspect was not completed because students were able to make only one question. The originality aspect in solving the problem could be seen when the students gave a new way solution and this was different from the previous one. Meanwhile in proposing the problems, aspet of originality was not fulfilled.</p><p><strong>Keywords</strong>: creative thinking characteristics, solving problems, proposing problems, cognitive style</p>
EKSPERIMENTASI MODEL PEMBELAJARAN KOOPERATIF TIPE THINK PAIR SHARE (TPS) DENGAN PROBLEM POSING PADA POKOK BAHASAN PELUANG DITINJAU DARI ADVERSITY QUOTIENT (AQ) SISWA KELAS XI SMK DI KABUPATEN BOYOLALI TAHUN AJARAN 2013/2014
Authors: Bahktiar Hidayat , Usodo Budi , Riyadi Riyadi 
Published: February 2020

<p><strong>Abstract:</strong> This research aimed to find out: (1) which one gives better in mathematics learning achievement, learning model of Think Pair Share (TPS) with Problem Posing, Think Pair Share (TPS) or conventional, (2) which one have better in mathematics learning achievement, students having climbers, campers or quitters of Adversity Quotient, (3) in each learning model, which one have better mathematics learning achievement, students having climbers, campers or quitters of Adversity Quotient, (4) in each student’s level of Adversity Quotient which one gives better in mathematics learning achievement, learning model of TPS with Problem Posing, TPS or conventional. This research was a quasi-experimental research with 3 x 3 factorial design. The population of the research was all students class XI majors group technology, health and agriculture of SMK in Boyolali. The samples were chosen by using stratified cluster random sampling. The instruments that were used to collect the data were the documentation of mathematics achievement, questionnaire of Adversity Quotient and test of mathematics achievement. The technique of analyzing the data was two-ways ANOVA with unbalanced cells. The result of research showed as follows: (1) learning model of TPS with Problem Posing provided better learning achievement than model of TPS and conventional, learning model of TPS provided better learning achievement than conventional, (2) the students having climbers and campers had same achievement, and the students having climbers and campers had better achievement than those having quitters, (3) in each learning model, the students having climbers and campers had the same achievement, and the students having climbers and campers had better achievement than those having quitters, (4) in each Adversity Quotient, learning model of TPS with Problem Posing provided better learning achievement than TPS and conventional, learning model of TPS provided better learning achievement than conventional.</p><p><strong>Key words: </strong>Think Pair Share (TPS), Problem Posing, and Adversity Quotient (AQ)</p>
EKSPERIMENTASI MODEL PEMBELAJARAN KOOPERATIF TIPE JIGSAW DAN NUMBERED HEADS TOGETHER PADA POKOK BAHASAN BANGUN RUANG SISI DATAR DITINJAU DARI KECERDASAN INTERPERSONAL SISWA KELAS VIII SMP NEGERI DI KOTA MADIUN
Authors: Kurniawati Kiki Riska Ayu , Budiyono Budiyono , Sari S Dewi Retno 
Published: February 2020

<p><strong>Abstract</strong>: The aims of this research were to find out the different effect of each categories of learning model, students interpersonal intelligence and their interaction towards students mathematics learning achievement on the subject of plane geometry. The research was quasi experimental with 3×3 factorial design. The population was all students of grade VIII State Junior High School in Madiun City on the second semester of 2013/2014 academic years. Sampling was done by stratified cluster random sampling technique. The sample of this research consisted of the students of SMP N 3 Madiun, SMPN 7 Madiun, and SMPN 10 Madiun. The sample consisted of 260 students. The hypothesis test used unbalanced two ways analysis of variance at the significance level of 0,05. Based on hypothesis test, it can be concluded that: (1) the cooperative learning model of <em>Jigsaw</em> type gives a better mathematics achievement than cooperative learning model of NHT type and direct learning model, and the cooperative learning model of NHT type gives a better mathematics achievement than direct learning model; (2) students with the high interpersonal intelligence had the same achievement as students with the medium interpersonal intelligence, students with the high interpersonal intelligence had better achievement than students with the low interpersonal intelligence and the students with the medium interpersonal intelligence had the same achievement as students with the low interpersonal intelligence; (3) on the cooperative learning model of <em>Jigsaw</em> type, NHT type and direct learning model, students with the high interpersonal intelligence had the same achievement as students with the medium interpersonal intelligence, students with the high interpersonal intelligence had better achievement than students with the low interpersonal intelligence and the students with the medium interpersonal intelligence had the same achievement as students with the low interpersonal intelligence; and (4) on students interpersonal intelligence high, medium and low, the cooperative learning model of <em>Jigsaw</em> type gives a better mathematics achievement than cooperative learning model of NHT type and direct learning model, and the cooperative learning model of NHT type gives a better mathematics achievement than direct learning model.</p><p><strong>Keywords</strong>: <em>Jigsaw</em>, NHT, interpersonal intelligence</p>
EKSPERIMENTASI MODEL PEMBELAJARAN KOOPERATIF TIPE TEAM ASSISTED INDIVIDUALIZATION DENGAN PENDEKATAN CONTEXTUAL TEACHING AND LEARNING PADA MATERI POKOK BANGUN RUANG SISI DATAR DITINJAU DARI SIKAP SISWA TERHADAP MATEMATIKA DAN PEMBELAJARAN MATEMATIKA SMP NE
Authors: Ardianzah Ferri , Kusmayadi Tri Atmojo , Usodo Budi 
Published: February 2020

<p><strong>Abstract: </strong>The aim of the research was to determine the effect of cooperatif learning models viewed from the attitude of students. The learning model compared were TAI-CTL, TAI and direct instruction. This was quasi-experimental research designed by factorial 3x3. The population was 8<sup>th </sup>grade students of junior high school even semester academic year 2013/2014 in Magetan regency. The sample was taken by using stratified cluster random sampling. Total sample was 231 students, consisted of 77 students as TAI-CTL class, 78 students as TAI class, and 76 students as direct instruction class. Hypothesis testing was performed using two-way analysis of variance with unequal cells. Based on the results of hypothesis testing, it is concluded that: (1) students learns using TAI-CTL and TAI had better achievement than students learnt using direct instruction, students learnt using TAI-CTL had better achievement than students learnt using TAI (2) positive attitude students had better achievement than those of neutral and negative attitudestudents, neutral attitude students had better achievement than negative attitude students (3) for TAI-CTL and TAI, students with positive attitude had better achievement than neutral and negative attitude, however neutral attitude students had the same achievement as negative attitude students, for direct instruction, positive attitude students had the same achievement as neutral attitude students, meanwhile positive attitude students had better achievement than negative attitudeand students with neutral attitude had the same achievement as negative attitude students (4) for positive attitude students, students learnt using TAI-CTL had the same achievement as students learnt using TAI, meanwhile students learnt using TAI-CTL and TAI had better achievement than students learnt using direct instruction, for neutral and negative attitude students, students learnt using TAI-CTL, TAI, and direct instruction had the same achievement.</p><strong>Keywords: </strong>TAI-CTL<em>,</em> TAI, Direct Instruction, Attitude
Pressure Interference Correction to the Material Balance Equation for Water-Drive Reservoirs Using a Digital Computer
Authors: Robinson Michael P. 
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 213, 1958, pages 418–422.

Abstract
The material balance equation for partial or complete water-drive reservoirs has been re-arranged to include a pressure interference term. This pressure interference term was obtained from the theory established by Mortada. A successful program was devised to solve the resulting equation in a few hours on a medium sized, digital computer. No prior knowledge of the properties of the aquifer is required in the solution. Trial calculations are made using various assumed combinations of aquifer properties. The optimum value of the constant expressing the aquifer properties corresponds to the best fit obtained between observed and calculated field history. Details of the method of calculation are illustrated by an example.

Introduction
A method of calculating the material balance equation for a partial water-drive reservoir completed in an aquifer has been described in the literature. Pressure interference from other pools located in the same aquifer is not taken into account in this solution. When present, the pressure interference effect must be included in order to make a complete performance analysis. A correction for this effect has been developed using the theory established by Mortada.
Manual calculation of the material balance for water-drive reservoirs is a formidable task. Such manual calculation when interference effects are included would be impossible to complete in any reasonable time period. However, a medium-sized stored program, digital computer can be used satisfactorily. The method is described in the following sections.
The Injection of Detergent Slugs in Water Floods
Authors: Taber J.J. 
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 213, 1958, pages 186–192.

Abstract
A major obstacle to the use of wetting agents in secondary recovery by water flooding is the adsorption of the agents on the sand. As a result of adsorption, the surfactant always lags behind the floodwater front. Consideration of the chromatographic theory of adsorption indicates that the detergents will not lag as much if used in very high concentrations. An investigation was made of the possibility of using high concentrations economically by flowing slugs of wetting agents followed by normal flood water. The experiments consisted of adsorption studies on Alundum powder and Berea sandstone. Flow tests on a 12-in. Alundum core and 22-in. Berea core were used to determine rate of detergent movement. The results of the flow experiments indicate that the relative rate of surfactant advance is, indeed, sensitive to the concentration of the agent. A 10 per cent slug moved with a rate that was 78 to 95 per cent as fast as the rate of advance of the flood water. By contrast, one with 25 ppm (the number of parts of commercial detergent in a million parts of water on a weight basis) concentration moved less than one-fourth as fast as the flood water, and calculations indicate that in very long porous systems the rate of movement of the lower concentrations will be a small fraction of the rate of advance of the flood front.
The results of the adsorption studies were utilized to calculate the rate of advance of the detergent when only the initial concentration was known. The calculated rates showed substantial agreement with the experimental flow tests in the high concentration ranges. The adsorption results were also used to estimate the cost of the materials for a slug-type surfactant flood in the field.
In addition to the faster rates of movement, the concentrated detergent slugs removed much more oil than the dilute solutions. However, the effectiveness of the slug process depends on many variables. The quantity of oil removed is increased markedly by increasing the flooding rate. The efficiency is also influenced by the type of crude, type of reservoir rock and initial water saturation. Therefore, a careful analysis of each reservoir system is required before the economic value of the process can be determined.
On the Streaming Potential Problem in Well Logging
Authors: Wyllie M.R.J. , de Witte A.J. , Warren J.E. 
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 213, 1958, pages 409–417.

Abstract
It has been suggested that streaming potentials are not normally logged because the streaming potentials known to be generated across mud filter cakes are substantially cancelled by streaming potentials generated in contiguous shale beds. Laboratory measurements of streaming potentials across hand specimens of shale have been adduced as evidence to support the suggestion. The experiments show that streaming potential depends on the resistivity of the equilibrating solution and on pressure drop. Measurements were made perpendicular to the bedding planes of the shales.
The mechanism of streaming potential generation in shale which the suggested cancellation theory implies has been critically examined. Conclusions reached are tested by comparing self potentials logged before and immediately after changing the resistivity (but not the weight) of mud in a borehole. The resultant SP change is found to equal the theoretical electrochemical potential change, i.e., cancellation of streaming potential is independent of mud resistivity. Since streaming potentials generated across mud filter cakes depend critically upon mud resistivity, shale streaming potential in situ must be equally sensitive.
Using plausible values for the permeability, porosity and compressibility of shale, the van Everdingen-Hurst approach shows that the pressure drop between borehole pressure and formation pressure in a radially homogeneous shale is unlikely to coincide with the zone of filtrate invasion. If, perchance, this coincidence occurs with one mud a change to a second must result in noncoincidence, i.e., a SP logged in the second mud should show a streaming potential. The dilemma may be overcome by postulating:permeabilities of shales parallel to their bedding planes greatly exceed their cross-bedding permeabilities;a resistivity-sensitive mud cake of low permeability forms either on the face of, or probably in the laminations of, many shales.
These postulates are examined with reference to the pressure and SP histories of the McClosky and Aux Vases zones in the Illinois Basin and some support for them found.
It is concluded that a definitive solution to the streaming potential problem does not exist.
Effect of Fractures on Sweep-out Pattern
Authors: Dyes A.B. , Kemp C.E. , Caudle B.H. 
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 213, 1958, pages 245–249.

Abstract
It has been suggested that formation fractures created by well stimulation treatments will adversely affect sweep-out efficiency in injection operations. Fluid-flow model studies involving vertical fractures of various lengths and fluid systems of various mobility ratios have been carried out to study this subject. In addition, limited data have been obtained on one model containing a horizontal fracture. It was found that relatively long and highly conductive fractures (not generally obtained in fracturing operations) were required to affect the sweep-out efficiency substantially.
In a given case in the field an approximate distinction can be made between the presence of long conductive fractures and shorter or less conductive ones. This is done with pressure build-up analyses along with data on the relationship of fracture length and conductivity to well productivity. This type analysis shows that usually the fractures induced are either short or of limited conductivity and therefore do not damage sweep-out efficiency.

Introduction
Improved well productivity and injectivity can frequently be exploited in injection operations. Higher total throughput can yield improved economics. On occasion, the achievement of an increased productivity or injectivity in specific wells can bring about a more uniform sweep of the reservoir.
Velocity Log Characteristics
Authors: Stripling A.A. 
Published: February 2020

Published in Petroleum Transactions, AIME, Volume 213, 1958, pages 207–212.

Introduction
This paper discusses the characteristics of the velocity logs now available to the petroleum industry, and some of their advantages and limitations. The velocity log was designed as an aid to the geophysicist to determine velocity layering in the earth and to provide fast, accurate and economical vertical travel time data. After a number of logs had been made, studies were carried out on their use in correlating strata in adjacent wells. It was found that adjacent strata usually show sufficient velocity contrast to make it possible to correlate these from well to well, even in areas where electric or radioactive logs fall. In addition, velocity logs have been useful in the determination of porosity and thickness of reservoir rock. These uses for velocity logs require an understanding of the characteristics of the log in response to the changes in velocity and in borehole conditions encountered normally in logging.

General Discussion of Instrumentation
The measurement made in velocity logging is more accurately described as a measurement of nine rather than velocity. Ideally the log is obtained by measuring the length of time required for compressional sound waves to travel through a fixed distance in the formation. In practice, the time measurement may be made accurately but the distance through which the waves have traveled may vary slightly. Changes in borehole diameter are responsible largely for the difficulty in maintaining a fixed distance, especially if the diameter variations are so abrupt and frequent that the borehole instrument cannot follow contours of the hole. Several service companies have velocity logging equipment available or under development which have different transmitters, receivers, and measuring systems. While these differences are important, there are actually only two systems in use at the present time (Fig. 1). The first system initiates a pulse at a transmitter and detects it at a single receiver. The transmitter and receiver are separated by a fixed distance, called the spacing. The time measured is that between the initiation of the pulse and the first arrival of acoustical energy at the receiver.