Articles
SISTEM PAKAR DIAGNOSA KERUSAKAN PADA TELEVISI LED DENGAN MENGGUNAKAN METODE FORWARD CHAINING (Studi Kasus di Wijaya Servis Elektronik)
Purwanto, Purwanto;
Putra, Bramuditya Adi
ELKOM : JURNAL ELEKTRONIKA DAN KOMPUTER Vol 9, No 1 (2016)
Publisher : Sekolah Tinggi Elektronika dan Komputer (STEKOM)
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (723.987 KB)
Adanya aktifitas yang padat membuat masyarakat menginginkan kerusakan pada Televisi yang cepatmenyelesaikan kerusakan yang terjadi. Teknisi baru yang mengalami kendala saat malakukan perbaikan Televisi akanbertanya kepada teknisi ahli atau senior namun tidak selalu berada ditempat. Dibutuhkan sistem cerdas berbasiskomputer (sistem pakar) yang dapat membantu, kinerja teknisi dalam menyelesaikan kerusakan Televisi.Metode penelitian yang digunakan dalam sistem pakar diagnosa kerusakan televisi LED adalah Research andDevelopment (R&D), menggunakan metode Forward Chaining, menggunakan Microsoft Visual Basic 6.0 dan databaseMicrosoft Access. Hasil penelitian berupa prototype produk aplikasi yang telah diuji di lapangan serta dinyatakanmemenuhi tujuan dalam proses diagnosa kerusakan Televis LED di Wijaya Servis Elektronik.Kata kunci : Sistem Pakar Diagnosa Kerusakan Televisi LED, Forward Chaining, Research and Development (R&D).
EFEKTIFITAS SOLAR ILLUMINATION DAN SOLAR LIGHT COLLECTORS PADA RUANG TERTUTUP
Purwanto, Purwanto
ELKOM : JURNAL ELEKTRONIKA DAN KOMPUTER Vol 8, No 1 (2015)
Publisher : Sekolah Tinggi Elektronika dan Komputer (STEKOM)
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (751.385 KB)
Penelitian tentang pencahayaan alami dalam ruang tertutup dapat menggunakan SOLAR ILLUMINATIONatau juga SOLAR LIGHT COLLECTORS. Penjelasan masing-masing penelitian sebagai berikut: (1) mekanismepemanduan cahaya dalam Solar Illumination adalah mengumpulkan cahaya menjadi berkas titik oleh panel solar;(2) mekanisme pemanduan cahaya dalam Solar Light Collectors menggunakan Solar Collector dan serat optikdengan uraian bahwa Solar collector merupakan alat yang digunakan untuk memantulkan dan mengumpulkansinar matahari pada satu titik, sedangkan serat optik digunakan sebagai media transmisi cahaya.Efisiensi ditentukan oleh berdasarkan besar intensitas dititik fokus yang ditentukan oleh Indeks bias udaradan Sudut penerimaan. Berdasarkan hasil penelitian, efisiensi pemanduan cahaya dalam Solar Illuminationmencapai 786,45 lux dan efisiensi pemanduan cahaya dalam Solar Light Collectors mencapai 483,84 lux.Berdasarkan hasil analisis menggunakan pendekatan efisiensi intensitas cahaya dalam ruang tertutupdiperoleh simpulan bahwa mekanisme pemanduan cahaya dalam Solar Illumination menghasilkan intensitascahaya yang lebih efektif.Kata Kunci : Solar Illumination, Solar Light Collectors, efisiensi intensitas cahaya.
IMPLEMENTASI METODA MATRIX BERBASIS DISKRIT UNTUK MENDETEKSI OBYEK BERGERAK DI DALAM AIR
Purwanto, Purwanto;
Achlison, Unang
ELKOM : JURNAL ELEKTRONIKA DAN KOMPUTER Vol 12, No 1 (2019)
Publisher : Sekolah Tinggi Elektronika dan Komputer (STEKOM)
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (673.674 KB)
Number of fish seed can be measured by means of conventional observation using eye senses. But when the fish seed measured pretty much it will take a long time (not efficient) and cause incorrect measurement results (inaccurate). The accuracy of calculation of fingerlings is crucial trust between seller and buyer. During this time a sensor is used to detect the amount of fish seed is passed through a transparent hose using a light sensor (Light Dependent Resistor) and photodiode sensors as infra red light receiver. The level of accuracy of the sensor lies in the intensity of the light beam is received so that the sensor will be impaired if airya murky and there are air bubbles pass through the sensor so that the fish count error occurs. This research will be conducted design counters the number of fingerlings using infra red phototransistor sensor with a frequency of 20KHz to fish and then processed using the logic matrix. Results matrix logic into the data input to be processed by a microcontroller as the basis of results of calculation of the amount of fish. Development model studies using models of R & D (research and development) that produce a product in the form of the final product. Experiments were carried out using the type and length of catfish fingerlings with a length of 3 cm to 5 cm. Fish seed count tool has been tested to catfish farmers in the village Siwarak Ungaran City. The trial results calculators fish seeds have difference of 3% of the calculated results Manual or accuracy of calculation results have fish reaches 97%, then a counter of fish seed is acceptable to be used by catfish farmers. Keywords: calculating the number of fingerlings, matrix logic NAND, Microcontroller
EXISTING PROGRAM TANGGUNG JAWAB SOSIAL (CSR) HOTEL BERBINTANG TERHADAP MASYARAKAT DI KOTA SURAKARTA
Purwanto, Purwanto;
Suhardjanto, Djoko;
Warto, Warto;
Supriyadi, Supriyadi
Proceeding SENDI_U 2018: SEMINAR NASIONAL MULTI DISIPLIN ILMU DAN CALL FOR PAPERS
Publisher : Proceeding SENDI_U
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
Full PDF (595.724 KB)
Hotel sebagai sebuah perusahaan yang memberikan jasa penginapan tidak luput dari munculnya berbagai dampak terhadap masyarakat di sekitarnya. Tujuan dari penelitian ini adalah (1) untuk mengidentifikasi program CSR hotel berbintang terhadap masyarakat di Kota Surakarta dan (2) untuk mengetahui existing program CSR terhadap masyarakat di Kota Surakarta. Jenis penelitian ini adalah penelitian kualitatif dengan strategi penelitian studi kasus. Penelitian ini di Hotel K yang beralamat di Jl. Sugiyopranoto dan Hotel PI yang beralamat di Jl. W. Monginsidi, Kota Surakarta, Provinsi Jawa Tengah. Teknik pengumpulan data menggunakan (1) observasi, (2) wawancara, (3) Focus Group Discussion (FGD), dan (4) studi dokumen. Selain itu, uji validitas dilakukan dengantriangulasi sumber dan triangulasi metode. Selain itu, peneliti menggunakan teknik analisis data interaktif Miles dan Huberman. Hasil dari penelitian menunjukkan program CSR yang dilaksanakan dalam bentuk pemberian bantuan dana dan pembangunan sarana sekitar hotel. Terkait Existing program tanggung jawab sosial perusahaan (CSR) bagi warga sekitar sudah cukup baik, namun belum bisa dirasakan secara merata manfaatnya. Selain itu, CSR tersebut masih sebatas charity dan temporer, bukan dalam bentuk pemberdayaan masyarakat yang bertujuan untuk peningkatan kesejahteraan masyarakat dalam jangka panjang. Berdasarkan hasil temuan diatas, peneliti dapat menyimpulkan bahwa CSR sangat membantu pihak hotel dalam memberdayakan masyarakat sekitar termasuk meningkatkan citra perhotelan.
BACURAMIN KA’ SARUGA: A SUSTAINABLE PRESERVATION LOCAL PRINCIPLE IN KAPUAS HULU FOR KERUPUK BASAH AS GEOGRAPHICAL INDICATION
Purwanto, Purwanto
INTERNATIONAL JOURNAL OF RESEARCH IN LAW, ECONOMIC AND SOCIAL SCIENCES Vol 1, No 2 (2019)
Publisher : Faculty of Law Universitas Panca Bhakti
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.32501/injuriless.v1i2.46
Kerupuk Basah called temet by Kapuas Hulu Local Community was provided for home consumption long long time ago. But lately, it was spread throughout Kalimantan Barat Province, likely Pontianak, Mempawah and Sintang. The taste proved that Kerupuk Basah from Kapuas Hulu had some differences than others, including finer surface structure, stronger fish taste, and softer when pressed or chewed. The study used statute approach and method through indepth interview. The study found there were 3 (three) factors which influenced Kerupuk Basah taste from Kapuas Hulu, namely 1) natural factor (Toman and Belida fish were the main composition in making Kerupuk Basah were only find in upstream of Kapuas Hulu river); 2) human factor (Kerupuk Basah was initially processed by Kapuas Hulu local community in the past and had been preserved until now then made them had a special expertise and able to make good quality of Kerupuk Basah; 3) combination of natural and human factor (Belida and Toman fish lived there combined with local community ability made Kerupuk Basah had a good reputation and unique characteristic). All of those factors led Kerupuk Basah could be Kapuas Hulu Geographical Indication. Then, Bacuramin Ka?Saruga (Dayak principle as most of local people there) agreed choice by the community, local government and Small and Medium Enterprises in Kapuas Hulu.
PRE-SERVICE ELEMENTARY TEACHERS’ WRITTEN COMMUNICATIONS: EXPLAINING MULTIPLICATION USING AREA REPRESENTATIONS
Saleh, Sitti Fithriani;
Purwanto, Purwanto;
Sudirman, Sudirman;
Hidayanto, Erry
International Journal of Insights for Mathematics Teaching (IJOIMT) Vol 1, No 1 (2018)
Publisher : Universitas Negeri Malang
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
This research was conducted to proposepre-service elementary teachers? (PsET)written communication in explaining multiplication representation, especially using area representation. Communication has an important role in learning process. Through communication, one can show or confirm his or her knowledge. The subjects of this research were 9 university students as the PsET. The subjects were asked to write the explanation of multiplication using area representation on a paper. After that, the researcher confirmed it by asking the subjects to re-explain that mentioned representation on a board as if they really taught elementary school students. From the result of this research, it is identified three main findings that can be obtained from written communication of the PsET, they are 1) expressing procedural and conceptual knowledge, 2) expressing ability in constructing connection, and 3) improvingthe confidence of PsET.
REPRESENTATION OF SCHEMATIC VISUAL IN SOLVING PYTHAGORAS’ WORDPROBLEM
Suryaningrum, Christine Wulandari;
Purwanto, Purwanto;
Subanji, Subanji;
Susanto, Hery
International Journal of Insights for Mathematics Teaching (IJOIMT) Vol 1, No 1 (2018)
Publisher : Universitas Negeri Malang
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
The aim of this article is to identify the steps which were done by the students in solving Pythagoras? word problems. This study used qualitative research by using explorative descriptive approach. The subject of this study was four students who werein seventh grade of Junior High school of Muhammadiyah 1 Jember. The subjects givenone problem in the form of story that had to be done based on their styles. From the result analysis of the study was found that the students tried to understand the aim of the problems by using picture, compass direction, and Pythagoras? pattern. In solving Pythagoras? word problem, the students used representation of schematic visual. In making schematic picture, the students were supposedto be consistent with compass direction. The student that isconsistent with compass direction can make the schematic picture correctly and with a picture,the student can solve the word problems by using Pythagoras? pattern correctly. The student who is inconsistent with compass direction will get difficulties in making schematic picture and not be able to solve Pythagoras? word problems correctly.
STUDENTS’ REVERSIBLE REASONING ON FUNCTION COMPOSITION PROBLEM: REVERSIBLE ON FUNCTION AND SUBSTITUTION
Ikram, Muhammad;
Purwanto, Purwanto;
Parta, I Nengah;
Susanto, Hery
International Journal of Insights for Mathematics Teaching (IJOIMT) Vol 1, No 1 (2018)
Publisher : Universitas Negeri Malang
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
In this paper we report students? reversible reasoning types on function composition problem. Reversible reasoning can be observed according to operation and structural correlation among input, process, and result. There are seven students participate in doing function composition related to structural correlation in (f?g)(x)=h(x), The researchers assume that there are four types of reversible reasoning in composition problem, namely: (1) reversible on composition; (2) reversible on function; (3) reversible on substitution; (4) reversible on variables. However, there are only two appearing reversible reasoning, they are: reversible on function and reversible on substitution. Each type were selected a subject to be interviewed for 25 minutes and asked to do the Function Composition Task (FCT). Subject with reversible on function type identifies structural correlation among input, source and result as well as involving inverse in input with permissibility (f(y)) to produce basic function (f(x)). Meanwhile, subject with reversible on substitution type, constructs result based on the input, identifies structural similarity and generalizes from the structural similarity to produce basic function.
THINKING INTERACTION OF STUDENT IN SOLVING OPEN-ENDED PROBLEMS
Sulandra, I Made;
As'ari, Abdur Rahman;
Subanji, Subanji;
Syarifudin, Syarifudin;
Purwanto, Purwanto;
Irawan, Edy Bambang
International Journal of Insights for Mathematics Teaching (IJOIMT) Vol 1, No 2 (2018)
Publisher : Universitas Negeri Malang
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
The purpose of this research is to describe the process of thinking interaction of students in solving the open-ended problem. The thinking interaction of students' in this study is defined as an activity of exchanging thoughts between students one with other students through communication to produce the suitability of the thinking process between them through the resolution of open-ended problems. This study was conducted on a group of junior high school students with heterogeneous capabilities, consisting of 5 students, and have taken the material to build space. The data of thought interaction activity is obtained from discussion result in solving open-ended problem analyzed by information processing theory. Students' thinking interaction activities begin from one subject person who gives statement and understanding about the problem provided. Activity mutual ideas, complement or give feedback to other subject's comments, ask questions that have not been understood, or give an explanation in deciding the answer to be agreed. Subsequent activities decide the answer orally to be written by each subject. All subjects poured the agreed result on the answer sheet, but there were still doubts from the two subjects on the answer, so the subject looked back at the answers from other subjects. Some subjects continue to write answers and in the end, each subject has a form of answer in accordance with their respective understanding.
IDENTIFICATION ERRORS OF PROBLEM POSED BY PROSPECTIVE PRIMARY TEACHERS ABOUT FRACTION BASED MEANING STRUCTURE
Prayitno, Lydia Lia;
Purwanto, Purwanto;
Subanji, Subanji;
Susiswo, Susiswo
International Journal of Insights for Mathematics Teaching (IJOIMT) Vol 1, No 1 (2018)
Publisher : Universitas Negeri Malang
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
The purpose of this study was to identify problem posed by prospective teachers about addition fractions based on meaning structure. This study is a quantitative descriptive to identify errors of fraction problem posed by prospective teachers based on the meaning. 46 prospective primary teachers in 8th semester in universities at Surabaya were involved in this research. Instrument in this study is a problem posing worksheet consisting two operations on fractions. Problems posed by prospective teachers were analyzed through three stages, grouping problems based on categories, structure of meaning, and analyze the error of the problem posed. The results of data analysis indicated that: (1) on the category of questions about fractions of 93.48% for 1stoperations and 97.83% for 2ndoperation, (2) on the Non-question category about operations fraction is 6.52% for 1st operations and 1.17% for 2nd operation. Grouping problems posed by prospective teachers based on structure meaning combined category is 62.79% for 1st operations and 75.56% for 2nd operation. For category of part relationships overall is 27.91% for 1st operations and 20% for 2ndoperation, while those which not belonging to the second category are 9.3% for 1st operations and 4.44% for 2nd operation. The errors of problem posed by prospective teacher based on meaning structure are (1) not related to daily life situation, (2) illogical problem, (3) unit is not appropriate, (4) fractions incompatible with the sum operation (5) gives whole number to give meaning fraction, (6) lost information, and (7) the added result exceeds the overall concept of the fraction.