Penghitung Biaya Pemakaian Telepon Lokal Interlokal dengan Menggunakan IBM PC

Pada rumah tangga atau kantor seringkali dikejutkan dengan besarnya biaya pemakaian telepon yang harus dibayar hal tersebut disebabkan karena pemakaian telepon tidak terkontrol dan termonitor. Pada tugas akhir ini akan direncanakan dan dibuat sebuah alat yang akan mendeteksi besarnya biaya pemakaian telepon lokal maupun untuk interlokal yang dapat ditampilkan pada layar monitor komputer dan juga dapat dicetak pada kerta

Penerapan Model Pembelajaran Problem Solving Berbantuan Web Pada Materi Ekstraksi Terhadap Hasil Belajar Dan Motivasi Mahasiswa

: Development of teaching and learning aided by communication technology is rapid today. Chemistry teaching and learning in higher education is now commonly used. This study aimed to determine: (1) students learning outcomes and; (2) students motivation after being taught by problem solving learning model assisted by web. The study was carried out using pre-experimental design (one-shot case study). The subjects were given treatment and followed by posttest. The treatment was problem solving learning model assisted by web. Subject of research were 32 students of fourth semester of Chemical Education UM, they were selected using random cluster sampling technique. Instruments used were achievement test which was consist of 20 item of essay questions, motivation questionnaire, and observation sheet student learning activities. Descriptive analysis were used to analyze the data. The results of the study showed that 26 or 81.25% of the 32 students gained scores above 70 with an average of 77.969. Learning motivation of students has increased after the learning

Pengaruh Pembelajaran Berbasis Web terhadap Hasil Belajar Mahasiswa Jurusan Kimia pada Materi Kimia Inti dengan Kemampuan Self Regulated Learning Berbeda

This research aimed to identify the influence of web-based learning on the learning outcomes of the students which was seen from different self regulated learning and interaction between students with, contens, students, and teacher on web based learning with different self regulated learning ability. This research employed quasi-experimental design with posttest only control group design. Subjects were the students in the second semester of Chemistry Department in Malang. The treatment instruments used in this research were syllabus, RPP, teaching materials, LKM, and online media. The other instruments of this research was measurement instrument which consists of self regulated learning questionnaire and learning outcomes test consist of 23 multiple choices. Data analysis was done with t-test and post hoc anova. The results of the study showed that (1) there is no significant difference in the cognitive learning outcomes of the students that are taught to use either blog or moodle as the web based learning media on different self regulated learning, and (2) on the blog class learning media more contribute to the learning process rather than students' SRL ability, while on the moodle class students' SRL ability more contribute to the process of learning rather than learning media.Penelitian ini bertujuan untuk mengetahui pengaruh pembelajaran berbasis web terhadap hasil belajar ditinjau dari kemampuan self regulated learning yang berbeda, serta interaksi antara mahasiswa dengan konten, mahasiswa, dan dosen pada pembelajaran berbasis web dengan kemampuan self regulated learning yang berbeda. Penelitian ini menggunakan rancangan penelitian eksperimen semu dengan posttest only control group design. Subjek penelitian adalah mahasiswa semester 2 jurusan kimia salah satu perguruan tinggi negeri di Malang. Instrumen perlakuan terdiri dari silabus, RPP, bahan ajar, LKM, dan media online, yaitu blog dan moodle. Instrumen pengukuran terdiri dari angket self regulated learning dan tes hasil belajar yang terdiri dari 23 soal pilihan ganda. Analisis data dilakukan dengan uji-t dan post hoc anava. Hasil penelitian menunjukkan bahwa: (1) tidak ada perbedaan hasil belajar kognitif mahasiswa yang dibelajarkan menggunakan pembelajaran berbasis web dengan media blog maupun moodle dari SRL yang berbeda, dan (2) pada kelas blog media pembelajaran lebih memberikan kontribusi pada proses pembelajaran daripada kemampuan SRL yang dimiliki mahasiswa, sedangkan pada kelas moodle kemampuan SRL yang dimiliki mahasiswa lebih memberikan kontribusi pada proses pembelajaran daripada media pembelajaran

Partisipasi Online Dalam Pembelajaran Community of Inquiry (Coi) Pada Materi Distilasi

Participation of chemistry student State University of Malang in the course of chemical separation is not maximized. It is necessary to apply one student centered learning strategy, that inquiry. Inquiry who form a learners group called the Community of Inquiry (CoI). Face-to-face meeting is a little on the distillation that can not maintain CoI in the classroom so that online learning is applied. The purpose of this study was to determine the online participation through CoI in the distillation. The method used is the pre-experimental with descriptive data analysis. Descriptive analysis states student participation in online learning in the distillation was high.Partisipasi mahasiswa Jurusan Kimia Universitas Negeri Malang dalam matakuliah pemisahan kimia belum maksimal sehingga perlu diterapkan salah satu strategi pembelajaran berpusat pada mahasiswa, yaitu inkuiri. Penerapan inkuiri dapat dilakukan dengan membentuk suatu kelompok mahasiswa yang disebut Community of Inquiry (CoI). Pertemuan tatap muka yang sedikit pada materi distilasi tidak dapat mempertahankan CoI di dalam kelas sehingga dilakukan pembelajaran online. Tujuan penelitian ini adalah mengetahui partisipasi online mahasiswa melalui penerapan pembelajaran CoI pada materi distilasi. Metode penelitian yang digunakan adalah pra-eksperimental dengan analisis data deskriptif. Hasil analisis deskriptif menyatakan partisipasi mahasiswa dalam pembelajaran online pada materi distilasi adalah tinggi

Thermal comfort survey in office buildings in Bandung, Indonesia

The comfort state of office building’s occupants is crucial since its related to the worker’s productivity. This comfort temperature of people from tropical climate might be different from temperate climate area. This study aimed to investigate thermal comfort and adaptive behaviour of occupants in office buildings with different ventilation modes: air-conditioned, mixed-mode, and free running. On February and March 2015, approximately 400 responses has been obtained through field surveys in three office buildings Bandung, Indonesia. The results has shown quite different comfort range between occupants in three ventilation modes: 24.7 oC, 26.3 oC, and 27.5 oC operative comfort temperature for FR, CL, and MM accordingly

Analisis Senyawa Volatil Dari Ekstrak Tanaman Yang Berpotensi Sebagai Atraktan Parasitoid Telur Wereng Batang Coklat, Anagrus Nilaparvatae (Pang Et Wang) (Hymenoptera: Mymaridae)

Plants produce volatiles as communication cues intra- or inter- species. Infested plants by herbivores will produce volatiles as indirect defense mechanism that attracts natural enemies of herbivores. Analysis of volatiles compounds produced by rice plant as result of infested brown plant hopper (BPH), Nilaparvata lugens Stâl, was done to identify compounds in the volatiles that potentially can be used as attractant for egg parasitoids of BPH, Anagrus nilaparvatae (Pang et Wang) (Hymenoptera: Mymaridae). This research was an early stage to develop formulation of parasitoid attractant. The research activities include volatiles extraction of infested rice stem by BPH eggs using acetone, n-hexane as the extraction solvents; analyses of volatile compounds with GC-MS; and bioassay of parasitoid orientation behavior to the volatiles using olfactometer methods. Extraction methods applied were maceration and continuous extraction followed by concentration. Bioassay on the parasitoid orientation behavior was done by using Y-tube olfactometer and every lot of bioassay using 30 parasitoid females with 3 replicates. The results showed that the volatile compounds of extract of infested rice stem by BPH eggs comprise of 16 components. The highest proportion of the components extracted with acetone is 2-Pentanone, 4-hydroxy-4-methyl (19,9%), while those with n-hexane is Hexanedioic acid, dioctyl ester (65%). A. nilaparvatae showed positive response to the volatiles extracted from infested rice plant by N. lugens eggs. Therefore, the volatiles can be used as an attractant for the egg A. nilaparvatae to support rice pest management