Articles

Found 25 Documents
Search

AN-AGRIC ANALYSIS ANALYSIS OF MAGNET MEDAN SENSOR MAKING MATERIAL WITH ION IMPLANTATION METHOD Istiyono, Edi
Jurnal Penelitian Saintek Vol 8, No 1: April 2003
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (10355.931 KB) | DOI: 10.21831/jps.v8i1.5476

Abstract

The national instrumental industries need support materials that have goodelectrical and magnetic properties. One is for sensor to measure magnetic field,  i. e.: magnetic layer. The experiment is to find  material for  magneticlayer that has high GMR ratio requiredfor sensor. The sample is an Ag-Fe thin film produced by ion implantation: silver implanted with iron ions at various doses from  1.5 x 1017 ions/em' to 9.0 x 1017 ions/em' and energyfrom 40 ke V to 100 ke V GMR is determined by four-point probe method inmagneticfield  Based on data analysis is conclused that: (1) Increasing of iron ions in Ag-Fe that produced by ion implantation causes decreasing of resistivity. Initially, increasing of annealing temperature causes decreasing of resistivity to minimum point, then the resistivity increases by increasing of annealing temperature; (2) Influence of ions dose, energy and annealing temperature to GMR:' (a) Initially, increasing of iron ions increases GMR ratio to the maximum point, then the GMR ratio decreases, (b) Increasing of the ion energy that is used the GMR ratio produced decreases and (c) Increasing of annealing temperature can rise GMR ratio; (3) Ag-Fe for ion. dose of 6. 0 x 1017  ions/em', energy of 100 ke)',  and annealing temperatureat 300 'C has a minimum resistivity of (16.7 :f: 3) x 10.9 f2m and optimum of GMR ratio  of  6.49%.   Ag-Fe  in  the  condition  is  a good  material fot: magneticfield sensor; and (4) the curves of magnetoresistance are simetry and maximum resistance about magneticfield equal to zero.
PENGEMBANGAN INSTRUMEN ASESMEN PENGETAHUAN FISIKA BERBASIS KOMPUTER UNTUK MENINGKATKAN KESIAPAN PESERTA DIDIK DALAM MENGHADAPI UJIAN NASIONAL BERBASIS KOMPUTER suyoso, suyoso; Istiyono, Edi; Subroto, Subroto
Jurnal Pendidikan Matematika dan Sains Vol 5, No 1 (2017): June 2017
Publisher : Faculty of Mathematics and Natural Sciences, Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.531 KB) | DOI: 10.21831/jpms.v5i1.12461

Abstract

Penelitian ini bertujuan untuk 1) menghasilkan instrumen penilaian berbasis komputer yang layak untuk mengukur kemampuan kognitif  peserta didik SMA, 2) menguji efektivitas instrumen penilaian berbasis komputer yang dikembangkan untuk mengukur pengetahuan Fisika peserta didik SMA, 3) mengukur tingkat kesiapan peserta didik dalam menghadapi ujian nasional berbasis komputer.Penelitian ini menggunakan model Research and Development (R&D). Model R&D terdiri atas tiga tahap utama yaitu: tahap pendahuluan, tahap pengembangan dan tahap evaluasi. Pada tahap pendahuluan telah diidentifikasi permasalahan  penilain pembelajaran fisika berbasis komputer. Tahap pengembangan telah dilakukan pembatan disain instrumen peniliaian fisika berbasis komputer, validasi produk, revisi produk dan uji coba produk secara terbatas. Pada tahap evaluasi telah dilakukan uji coba secara luas, revisi produk, dan pembuatan produk akhir. Uji statistik deskritif digunakan untuk mendeskripsikan hasil aplikasi penilaian pengetahuan berbasis komputer.Hasil penelitian ini: (1) Instrumen soal yang dikembangkan layak untuk untuk mengukur kemampuan kognitif peserta didik SMA, (2)  instrumen penilaian  berbasis kompunter  lebih efektif dan efisien untuk mengukur kemampuan pengetahuan Fisika peserta didik SMA daripada paper and pencil test,  (3) Peserta didik 58,67% sudah siap menghadapi tes berbasis komputer ,34% peserta didik belum siap melakukan tes berbasis komputer dan 7,33 % tidak siap melakukan tes berbasis komputer. Kata Kunci: Penilain berbasis Komputer, FisikaThe Development of Computer?Based Assessment of Physics Science to Improve Readiness of Students in Dealing Computer?Based National Examanation AbstractThis research aims to 1) produce computer-based assessment instruments eligible to measure the cognitive abilities of senior high school students, 2) test the effectiveness of computer-based assessment instrument developed to measure the knowledge of physics in senior high school students, 3) measuring the level of readiness of students in dealing computer-based national examanation. This research  uses a model of Research and Development (R & D) which consists of three main stages: the preliminary stage, the stage of development and evaluation phase. At the preliminary stage has been identified problems of computer-based assessment of learning physics. At the development stage has been carried out the design manufacture of computer-based assessment instrument physics, product validation, product revisions and testing of products on a limited basis. In the evaluation stage has been tested extensively, product revision, and the final product. Descriptive statistical test used to describe the results of the application of computer-based knowledge assessment. The results research show that : 1) computer-based assessment instruments eligible to measure cognitive abilities of senior high school students, 2) computer-based assessment instruments are more effective and efficient to measure the students knowledge of physics in senior high school rather than paper and pencil test, 3) 58.67% of students are ready to face computer-based test, 34% of students not yet ready for the computer based test and 7.33% are not ready to perform the test based computer.Keywords: Computer-Based Assessment, Physics  
PENILAIAN PEMBELAJARAN YANG MENERAPKAN LESSON STUDY PADA FISIKA ZAT PADAT LANJUT Istiyono, Edi; Suparno, Suparno; Ariswan, Ariswan; Kuswanto, Heru; Sari, R. Yossi Aprian
Jurnal Pendidikan Matematika dan Sains Vol 1, No 2: December 2013
Publisher : Faculty of Mathematics and Natural Sciences, Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.426 KB) | DOI: 10.21831/jpms.v2i2.2486

Abstract

Telah dilakukan penelitian yang memiliki tujuan umum untuk menguji pengaruh lesson study dengan teknik guided teaching dengan hasil pembelajaran Fisika Zat Padat Lanjut. Tujuan khusus tulisan ini meli-puti: (1) menyusun instrumen penilaian pembelajaran Fisika Zat Padat Lanjut yang menerapkan lesson study; (2) mengukur prestasi belajar; dan (3) mengukur aktivitas mahasiswa dalam pembelajaran. Penelitian ini dilaksanakan di FMIPA Universitas Negeri Yogyakarta. Subjek penelitian adalah semua mahasiswa Program Studi Fisika Jurusan Pendidikan Fisika yang mengambil mata kuliah Fisika Zat Padat Lanjut. Penelitian ini berupa penelitian tindakan kelas. Penskoran hasil tes dengan politomus dan aktivitas mahasis-wa dinyatakan dalam persentase. Hasil pengukuran menunjukkan bahwa: (1) Instrumen penilaian terdiri atas lembar observasi dan tes yang berupa: (a) uraian untuk materi: sifat dielektrik dan optik bahan pada siklus I, (b) berupa isian singkat untuk materi bahan magnetik pada siklus II, dan (c) berupa tes isian singkat-uraian pada materi ketidaksempurnaan kristal pada siklus III; (2) prestasi belajar mahasiswa meningkat dari siklus I, II, dan III; dan (3) aktivitas mahasiswa dalam diskusi kelas meningkat dari siklus I, II, dan III.Kata kunci: penilaian, pembelajaran, lesson study, fisika zat padat lanjut
REMEDIBERBANTUANKOMPUTERSEBAGAIUPAYA UNTUK MENINGKATKAN PRESTASI BELAJAR FISLKA ZAT PADAT Istiyono, Edi
Jurnal Cakrawala Pendidikan No 2 (2003): CAKRAWALA PENDIDIKAN, EDISI JUNI 2003, TH. XXII, NO. 2
Publisher : LPPMP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (618.806 KB) | DOI: 10.21831/cp.v1i2.8714

Abstract

The objectiveofresearch were: (I) to determine the influenceof remedial program by computer on the achievement of the SolidState Physics and (2)to determine the students self-learning in theremedial program by computer.Subjectof research was the student of the Study Program ofPhysics of Mathematics and Science Faculty in Yogyakarta- StateUniversity who took the Solid State Physics Subject. Data weregathered by meantof: (1) test and (2) observation. Test was used tocollect the students achievementin the Solid State Physics.By analyzing of data, it was concluded that: (1) remedialprogramby computer increases the learning achievement of theSolid State Physics and (2) the mostof students are self-learning inthe remedial programby computer
PEMBELAJARAN KONTEKSTUAL DALAM PENINGKATAN EFEKTIVITAS PEMBELAJARAN ANALISIS RANGKAIAN LISTRIK Istiyono, Edi; Supahar, Supahar; Pujianto, Pujianto
Jurnal Cakrawala Pendidikan Vol 2, No 2 (2008): Cakrawala Pendidikan, Juni 2008, Th. XXVII, No. 2
Publisher : LPPMP Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.026 KB) | DOI: 10.21831/cp.v2i2.8509

Abstract

The objectiveof research are: (1) to discover step of learning community; (2) todiscover acomputer based media and module thatsupport of learning community;and (3) to discover type of authentic assessment that support of learningcommunity that can raise effectively of learning of Circuit Analysis. Subject ofresearch is the student of the Study Program of Physics of Mathematics and ScienceFacultyin Yogyakarta State University that takes the Circuit Analysis Subject of 28students. To detetrr)ine daia of the research is used methods: (1) test, (2)observation, and (3) questioner. Test is used to detetrr)ine data of the learningachievement of the Circuit Analysis. Observationto determine of student activity.By analyzingof data, it is concluded that: (1) Steps of learning community thatcan raise effectively of learning of Circuit Analysis are: (a) Lecturer explains pointsof lecture,(b) Lecturer gives different tasks to each group, (c) class is divided to 3-4person/ group, and (d) each of group present their paper and another groupperceive; (2) Type of authentic assessment in contextual teaching and learning thatapply learningcommunity can rise effectively of learning of Circuit Analysis are:(a) activity,(b) task, (c) quiz, and (d) test; and (3) Media of learning and modulethat support to learning community to rise effectively of learning of CircuitAnalysis. Media construction is figure, simple explanation, color-animation font.Module constructionis complete theory, problem solving, and drill
STATEMENT OF MECHANICAL PROPERTIES OF MATERIALS WHICH HAVE ANALYZED Istiyono, Edi
Jurnal Penelitian Saintek Vol 11, No 1: April 2006
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11954.014 KB) | DOI: 10.21831/jps.v11i1.5545

Abstract

The experiment  purposes  to observe  0(' (1)  the influence  of temperatureto the  [ensile strength   of  material.   (2) the  influence  of anneal  lime  to the tensile  strength  of material.   (3) the influence  (if temperature   to the torsion  modulus  (if material,   (4)  the  irfluence   (if anneal  lime  to  the torsion  modulus   of  material.   and  (5j  discover   the  material   that  has optimum  of tensile strength  and torsion  modulus.Sample  of the  experiment   is win! of  ion.  steel  and  copper  which  areannealed   011   temperature    of   15()°C,  25{)°C,  350°C,   45()"C,  550"C,650"C.  750°C. 850°C, and  950°Cfor   30 minutes.  Besides.  the wires are annealed  on temperature   350°Cfor    30.60,   9().120.  150. IBO. ]J()   and240  minutes.   The  tensile   strength   of  materials   is  measured   with  atensometer.   Tension  modulus   of  materials   is  measured   with  tension modulus  meter.Based   on  data   analysis    is  concluded    thai.   ( l )   Increasing    of  thetemperature   anneal  causes   decreasing   of  ttle  tensile  strength   of  the materials.   (2) increasing   of the  time  anneal  causes  decreasing   of the tensile  strength   (if  the  materials.    (3)  increasing   (if the  temperature anneal  causes  decreasing   of the torsion  modulus  of the materials.   (-/) increasing  of the anneal  time causes  decreasing  of the torsion  modulus of the materials.  and  (5) the optimum  tensile  strength  is the steel  which anneal   temperature    of  450°C  and  anneal   time   (if  30  minutes.   The optimum  torsion  modulus  is iron, which is not annealed.
A DIAGNOSIS OF STUDENTS' ERRORS IN ANSWERING THE MATHEMATICS TEST IN SENIOR HIGH SCHOOL Shantika, Evana Gina; Istiyono, Edi
Jurnal Penelitian dan Evaluasi Pendidikan Vol 23, No 2 (2019): December
Publisher : Graduate School, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.207 KB) | DOI: 10.21831/pep.v23i2.16370

Abstract

This study aims to reveal: (1) the characteristics of diagnostic test items used in mathematics subject of the first grade of senior high school (SHS); (2) the degree of errors from several types of students? errors in answering mathematics test; and (3) the dominant factor causing the students to make mistakes in answering mathematics test. This study used a quantitative approach involving the first graders of eight SHSs in Mataram as the population. The sample was collected by a proportionate random sampling technique, consisting of 350 students for preliminary field testing and 450 students for main field testing. The research instrument was a mathematics diagnostic test, questionnaire, and interview guidelines. The results show that: (1) the diagnostic test instrument meets the qualitative and quantitative content validity, proves empirically fit with Partial Credit Model (PCM), has reliability index of 0.92 (high category), and all items in the diagnostic test instrument are categorized in moderate difficulty; (2) misrepresentation becomes dominant errors if compared with misconceptions, the counting errors, and procedural errors. The errors dominant in the topic domain are Inequalities Linear System Two Variables if compared with Rational and Irrational Inequality One Variable, Equations and Inequalities of Absolute Value, and Linear Equations System Three Variables; and (3) most of the students do not understand how to solve the problem of inequality, determining factor quadratic equations, determining the members of the set completion, problems concerning graphs, and problems that require the capability of language interpretation into the mathematics model.
EVALUATION MODEL OF CAREER COUNSELING PROGRAM IN VOCATIONAL HIGH SCHOOL Martaningsih, Sri Tutur; Soenarto, Soenarto; Istiyono, Edi
International Journal of Evaluation and Research in Education (IJERE) Vol 8, No 2: June 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (456.97 KB) | DOI: 10.11591/ijere.v8i2.14986

Abstract

ocational high school graduates are expected to readily enter the work field, nevertheless, the number of unemployment from vocational high school graduates is still big. Optimizing a career guidance service requires complete evaluation feedback. In detail, this research aims to: identifying a construct instrument applicable to evaluate a career guidance program at vocational high school; Developing an evaluation model; and Examining the measurement, structure and the effectivity of the model. The research?s approach and development employ Borg & Gall?s Model. The test toward the product is addressed to nine vocational high schools in Yogyakarta. The validity and reliability instruments are verified through expert judgment, alpha Cronbach analysis, Exploratory Factor Analysis (EFA), testing the measurement model, and for the structural model, it is verified by means of partial least square (PLS) SmartPLS 3.0. The product constitutes a career guidance evaluation model at vocational high school, complete with its application, manipulation, and analysis up to recommendation construction. The result of the EFA test shows six measurement factors of counseling service: assertiveness, career readiness, self-awareness, career awareness, work characteristics, and positive attitude towards guidance and counseling service. The quality instrument product of TADIPHE consists of the target component (3 items), assessment (13 items), design (13 items), installation (22 items) process (44 items), the result (70 items), and effectiveness of the program (7 items). The result of the partial least square shows that all predictors contribute (Q2) as much as 88.91%, and 11.09 % and the rest may be determined by other variables.
A COMPUTERIZED ADAPTIVE TEST FOR MEASURING THE PHYSICS CRITICAL THINKING SKILLS IN HIGH SCHOOL STUDENTS Abidin, Aang Zainul; Istiyono, Edi; Fadilah, Nunung; Dwandaru, Wipsar Sunu Brams
International Journal of Evaluation and Research in Education (IJERE) Vol 8, No 3: September 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (693.474 KB) | DOI: 10.11591/ijere.v8i3.19642

Abstract

Classical assessments that are not comprehensive and do not distinguish students' initial abilities make measurement results far from the actual abilities. This study was conducted to produce a computerized adaptive test for physics critical thinking skills (CAT-PhysCriTS) that met the feasibility criteria. The test was presented for the physics subject of 11th grade high school students with two-tier multiple-choice format. This development research was based on the 4-D model combined with the test development model by Oriondo & Antonio. Eleven experts and 577 11th grade high school students in Kulonprogo, Indonesia, have participated. The media feasibility and the content validity of the items was assessed by experts, while item and abilities parameters were estimated by item response theory. The results obtained: 1) CAT media was declared very feasible and content validity of 136 items was declared valid; 2) all items fitted to partial credit model, the item reliability was classified as good, and the difficulty index of items was good; 3) the results of the CAT-PhysCriTS were equivalent to students academic achievement. Based on the results, CAT-PhysCriTS has fulfilled the requirements as a measuring instrument with measurement times were faster and more comprehensive for large-scale assessments.
Physics Comprehensive and Contextual Teaching Material (PhysCCTM) untuk Meningkatkan Higher Order Thinking Skill (HOTS) Siswa SMA Adi, Nugroho Prasetya; Suparno, Suparno; Mudilarto, Mudilarto; Istiyono, Edi; Alpin Y, Rattiwizal; Zaini, Muhammad; M.J.A, Syayid Qosim
Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (977.011 KB) | DOI: 10.20961/prosidingsnfa.v2i0.16388

Abstract

Abstract: This study aimed to: (1) produce Physics Comprehensive and Contextual Teaching Material (PhysCCTM) which was reasonably for physics learning in SMA, and (2) examine the effectiveness of Physics Comprehensive and Contextual Teaching Material (PhysCCTM) to increase students Higher Order Thinking Skill (HOTS). This research used R&D methods with 4D models consisting of (1) Define, (2) Design, (3) Developt, and (4) Disseminate. The resulted product is PhysCCTM. The data were colleted by using an evaluation sheet of product, and test of HOTS. The data were analyzed using Aiken V to assess the product quality, and N-Gain analysis. The result of this research produced teaching material PhysCCTM which: (1) was reasonably to increase students HOTS with very good category based on expert, teachers, and good category based the response of students, and (2) effective to increase students HOTS significantly by effectivity on Partial Eta Squared in Multivariate Test with the value is 90,4%. Abstrak: Penelitian ini bertujuan: (1) untuk menghasilkan Physics Comprehensive and Contextual Teaching Material (PhysCCTM) yang layak untuk pembelajaran fisika di SMA, dan (2) menguji efektivitas Physics Comprehensive and Contextual Teaching Material (PhysCCTM) dalam meningkatkan Higher Order Thingking Skill (HOTS) siswa SMA. Penelitian pengembangan ini menggunakan metode R&D dengan model 4D yang meliputi tahap (1) Define, (2) Design, (3) Develop, dan (4) Disseminate. Produk yang dihasilkan adalah PhysCCTM. Instrumen pengumpulan data yang digunakan adalah lembar penilaian perangkat pembelajaran, dan lembar penilaian HOTS. Teknik analisis data yang digunakan adalah Aiken V untuk melihat kualitas produk dan analisis General Linier Model (GLM). Hasil penelitian menunjukkan bahwa telah dihasilkan produk PhysCCTM yang: (1) layak digunakan untuk meningkatkan HOTS dengan kategori sangat baik berdasarkan penilaian ahli dan guru, serta kategori baik berdasarkan respon siswa, dan (2) efektif untuk meningkatkan HOTS siswa secara signifikan berdasarkan efektivitas pada Partial Eta Square di Multivariate Test dengan nilai 90,4%.