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PENGEMBANGAN LEMBAR KERJA SISWA (LKS) BERORIENTASI GUIDED INQUIRY UNTUK MELATIHKAN KETERAMPILAN PROSES SAINS PADA MATERI ASAM-BASA (DEVELOPMENT OF STUDENTS WORKSHEET WITH GUIDED INQUIRY ORIENTATION TO PRACTICE SCIENCE PROCESS SKILLS IN ACID-BASE TOPIC) KURNIAWAN, EDI
UNESA Journal of Chemical Education Vol 6, No 3 (2017): Vol. 6, No.3, (2017)
Publisher : State University of Surabaya

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Abstract

Penelitian ini bertujuan mengetahui kelayakan lembar kerja siswa, melatihkan keterampilan proses sains siswa, serta hasil belajar siswa. Desain penelitian ini menggunakan model pengembangan 4-D, tetapi tahap penyebaran tidak dilakukan. Instrumen yang digunakan adalah lembar telaah, validasi, respon siswa, evaluasi keterlaksanaan guided inquiry, evaluasi keterampilan proses sains, tes keterampilan proses sains, evaluasi hasil belajar, serta pengamatan aktivitas siswa. Uji coba terbatas dilakukan terhadap 12 siswa kelas XI SMAN 16 Surabaya. Metode yang digunakan adalah angket, evaluasi, dan pengamatan. Hasil validasi menyatakan lembar kerja siswa sangat layak berdasarkan kriteria isi, bahasa, penyajian, kegrafikan, guided inquiry, dan keterampilan proses sains dengan persentase 84,63%; 89,06%; 81,25%; 84,25%; 85,42%; 78,13%. Siswa memiliki keterampilan proses sains yang mulai membudaya dengan persentase 91,66%, dan hasil belajar yang baik dengan ketuntasan 80%. Kata Kunci: lembar kerja siswa, guided inquiry, keterampilan proses sains, hasil belajar, asam-basa, kelayakan.  The aim of this study was known the feasibility of students worksheet, practice science process skills, and students’s cognitive result. This study using 4-D models, with no disseminate step. The instrument used in this study were review, validity, students’s response questionnaire, guided inquiry evaluation, science process skills evaluation, students’s cognitive evaluation, and observation of activity students sheet. Limited trial test was conducted to 12 students of 11th grade of SMAN 16 Surabaya. The method used in this study were questionnaire, evaluation, and observation. Validation result showed that students worksheet was very feasible based on criteria of content, language, presentation, graphical, guided inquiry, and science process skills as followed: 84,63%; 89,06%; 81,25%; 84,25%; 85,42%; 78,13%. Students had good developing science process skills with percentage as followed  91,66%, and good students’s cognitive result with percentage 80%. Key words: students worksheet, guided inquiry, science process skills, students’s cognitive result, acid-base, feasibility.
TRANSESTERFICATION PROCESS OF WASTE COOKING OIL CATALYZED BY NA/CAO DERIVED FROM BLOOD CLAM (ANADARA GRANOSA) SHELLS Kurniawan, Edi; Nurhayati, Nurhayati
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 1, ISSUE 1, February 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol1.iss1.art1

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Abstract: Blood clam (Anadara granosa) shells has the potential to be developed as a base heterogeneous catalysts for biodiesel production. Blood clam (Anadara granosa) shells has a high mineral content of calcium carbonate (CaCO3). CaCO3 can be decomposed into CaO at high temperature heating. In this study, CaO catalyst synthesized from the blood clam (Anadara granosa) shells calcined of 900 °C for 10 hours and then impregnated using NaOH (1, 3, and 5% w/w) the activation temperature of 600 °C for 5 hours. 3% Na/CaO catalyst was the most better catalyst with maximum biodiesel results obtained at 83,57% using the 3% Na/CaO catalyst. The maximum conditions obtained from biodiesel production using the 3% Na/CaO catalyst on the reaction temperature at 60 °C, the reaction time of 3.5 hours, stirring speed of 250 rpm, 3 g weight of catalyst, and the mole ratio of oil: methanol 1: 6.Keywords: Biodiesel, Transesterification, Blood clam shells, Heterogeneous base catalystReceived: 29 September 2019; Accepted: 2 December 2019; Published: 15 January 2020
ON COMPARISON BETWEEN REPETITIVE CONTROLLER AND PI CONTROLLER TRACKING PERFORMANCE Kurniawan, Edi
INKOM Journal Vol 8, No 2 (2014)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.inkom.417

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Tracking periodic signals are common task in many control problems. One of the examples is movement control of pick and place robot in industry. The requirement of high tracking accuracy becomes very important in many applications. Therefore, a sophisticated control algorithm that manages to achieve high accuracy tracking of periodic command is required. Repetitive Control (RC) based on internal model principle is one of control schemes that can be employed to achieve perfect tracking of periodic signal. On the other hand, Proportional Integral (PI) controller can also be used for tracking. This paper compares the tracking performance of PI controller, RC, and PI with RC, where PI with RC here is integration between PI controller and RC. Step by step design to obtain the parameters of PI, RC and PI with RC are given. A simulation on servo motor system is carried out to assess the performance of RC, PI, andPI with RC respectively. From the simulation results, the transient response and tracking accuracy are thoroughly discussed.
ANALISIS KARAKTERISASI TEKNOLOGI DIRECT SEQUENCE SPREAD SPECTRUM DAN FREQUENCY HOPPING SPREAD SPECTRUM Bawahab, Fawzan Galib Abdul Karim; Yuniarti, Elvan; Kurniawan, Edi
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Vol 2, No 2 (2019)
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.724 KB) | DOI: 10.15408/fiziya.v2i2.9513

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Abstrak. Pada penelitian ini, telah dilakukan analisa karakterisasi pada teknologi Direct Sequence Spread Spectrum dan Frequency Hopping Spread Spectrum, sebagai salah satu teknik multiple-access pada sistem komunikasi. Karakterisasi dilakukan untuk mencari bagaimana cara meningkatkan keoptimalan kedua sistem tersebut, dalam mengatasi masalah interferensi dengan sistem dan channel yang sama. Dan juga untuk menentukan veriabel apa yang mempengaruhi keoptimalan kedua sistem tersebut. Karakterisasi dilakukan dengan menentukan variabel-variabel yang mempengaruhi keoptimalan keduanya. Hasil dari karakterisasi, diketahui variabel-variabel yang mempengaruhi kemampuan sistem DSSS yaitu nilai frekuensi spreading (). Sedangkan untuk sistem FHSS yaitu nilai frekuensi spreading ( dan ) dan selisih antara frekuensi hopping data dengan frekuensi hopping interferensi . Kata Kunci: BER, DSSS, FHSS, Interference, Spread spectrum. Abstract. In this study, characterization of Direct Sequence Spread Spectrum and Frequency Hopping Spread Spectrum technologies have been done, as one of the multiple-access techniques in communication systems. Characterization is done to find out how to improve the ability of the two systems, in solving interference problems with the same system and channel. And also to determine what veriabel affects the ability of the two systems. Characterization is done by determining the variables that affect the ability of both. The results of the characterization, known variables that affect the ability of the DSSS system are the spreading frequency value (). As for the FHSS system, the spreading frequency value ( and ) and the difference between frequency hopping data with frequency hopping interference .
ANALISIS RESPON SISTEM KENDALI LQR (LINEAR QUADRATIC REGULATOR) PADA SIMULASI GIMBAL KAMERA DUA SUMBU Syahna, Qalisha Putri; Yuniarti, Elvan; Kurniawan, Edi
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Vol 2, No 1 (2019)
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (341.211 KB) | DOI: 10.15408/fiziya.v2i1.11178

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Research has been conducted to analyzed the responses of the two axis camera gimbal control system for pitch and roll direction using the Linear Quadratic Regulator (LQR) control system. It focused on the effect from the value of gain Q in calculation of the LQR. The system output was plotted into a step signal so it will be analyzed with transient response method and plotted into sinusoidal signals to find the amplitude value along with the amplitude time. For comparison, the PID control system with the auto-tuning method was also used in this study. It has been done in order to find out whether the LQR control system is more appropriate to use in the two axis camera gimbal system or not. The result from the analysis of the variation of the Q value given at both angles is that the system runs stable when the value of P= 4 for roll angle and P= 6 for pitch angle. For the effect from value of gain Q on the whole system is it will make the output significally changed when the P=1-10. While the results of the comparison can prove that the LQR control system has a better system responses.
Rancang Bangun Sistem Informasi Pelayanan Online dan SMS Gateway Pada Pdam Tirta Daroy Banda Aceh Kurniawan, Edi
JURNAL ILMIAH Al BATTANI Vol 1, No 1 (2015)
Publisher : FTK UIN AR-RANIRY

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Abstract

Sistem informasi merupakan gabungan antara teknologi informasi dan ending user yang menggunakan teknologi informasi. Hasil penelitian membuktikan bahwa PDAM Tirta Daroy Banda Aceh belum maksimal dalam hal pelayanan dan penyampaian informasi aktual kepada pelanggan. Hal tersebut disebabkan penyampaian informasi sangat sulit diakses publik dan membutuhkan biaya besar. Hasil rancangan sistem informasi dalam artikel ini merupakan hasil penelitian dan observasi langsung yang diperoleh di PDAM Tirta Daroy Banda Aceh yang belum memiliki website resmi untuk layanan informasi. Rancangan Website dan SMS gateway tersebut diharapkan mampu memberikan layanan informasi kepada pelanggan yang menerima menerima manfaat langsung dari PDAM Tirta Daroy Banda Aceh. Kata Kunci: Sistem Informasi, Layanan Online, dan SMS Gateway.
Teknik Pembibitan Gofasa (Vitex cofassus Reinw) Kurniawan, Edi
Buletin Eboni Vol 10, No 1 (2013): Info Teknis Eboni
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar

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Abstract

Gofasa merupakan salah satu spesies lokal (native species)  Sulawesi. Kayu Gofasa sebagai kayu industri perkapalan dan perahu tradisional banyak diminati masyarakat di Sulawesi. Permintaan terhadap kayu gofasa dari waktu ke waktu yang semakin tinggi seiring dengan meningkatnya permintaan terhadap perahu phinisi, sehingga perlu digalakkan pembudidayaan yang lebih intensif. Salah satu kegiatan yang mendorong keberhasilan budidaya jenis ini adalah ketersediaan bibit yang bermutu. Tulisan ini memaparkan teknik pembibitan gofasa dimulai dari pengadaan benih, perkecambahan hingga pembibitan di persemaian.
PENATAAN KAWASAN WISATA DAKWAH OKURA DENGAN PENDEKATAN ARSITEKTUR EKSPRESIONISME Kurniawan, Edi; Hidayat, Wahyu; Faisal, Gun
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Dakwah Okura Tourism is a sunnah sport tours located in the village of Okura, Rumbai district. Dakwah Okura Tourism is the first sharia tourist attraction using the concept of sunnah sports as their tourist activity. There are sunnah sports recommended in Islam, in a hadith of the Prophet, those 3 types of sports are swimming, horseback riding and archery. In order to keep the aesthetics and the comfort of the user, there should be an optimization at this tourist area, so thatthe infrastructure could work synergistically and comprehensively to support more adequate activities and to complete some sunnah sports activities. This design method used the theme of expressionism architecture as the form of building architecture that could realize a concept of how the building are able to accommodate well and becoming the identity of the region and having anattractive aesthetic. The design of this tourist area is aimed to introduce the sunnah sports to the community, especially Riau community, so that the community are able to get closer to the sunnah, which is recommended by the Prophet Muhammad Shallallahu 'Alaihi Wasallam. The result of this design is the visitors can feel the differences that exist in each building and feel the sensation as well as expressing their emotions or feelings through the form. There are 3 functions that exist in this area, which is: primary function, secondary function and support function. Activities in this primary function are: horseback riding, swimming, archery and airsoft gun/paintball, the secondary function is in the form of trade and services, the supporting function is in the form of treatment, management and service.Keyword: Aesthetics, Dakwah Okura, Expressionism Architecture, Sunnah Sports
ANALISIS KESALAHAN DALAM MENYELESAIKAN SOAL CERITA MATEMATIKA DENGAN MENGUNAKAN PROSEDUR NEWMAN Kurniawan, Edi
EKUIVALEN - Pendidikan Matematika Vol 28, No 1 (2017): EKUIVALEN
Publisher : Universitas Muhammadiyah Purworejo

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Abstract

Penelitian ini bertujuan untuk mengetahui kesalahan-kesalahan siswa dalam menyelesaiakan soal cerita pokok bahasan sistem persamaan linier dua variabel dan untuk mengetahui faktor penyebab siswa melakukan kesalahan. Penelitian ini merupakan penelitian kualitatif. Subjek dalam penelitian ini adalah siswa kelas VIII SMP N 43 Purworejo sebanyak 3 orang. Penentuan subjek menggunakan teknik purposive sampling dan snowboll sampling. Data yang dikumpulkan berasaal dari hasil tes, hasil rekaman suara, catatan lapangan, dan dokumentasi sebagai pendukung. Tahapan analisis data yaitu: data reduction, datadisplay,conclusion drawing/verification. Hasil dari analisis data terdapat lima kesalahan siswa dan faktor penyebabnya yaitu: (1) kesalahan menuliskan kembali apa saja yang diketahui dalam soal dan kurang bisa dalam memaknai arti kata, (2) kurang bisa memahami soal dan pertanyaan yang dimaksud dalam soal, (3) tidak mampu mengubah soal cerita ke bentuk model matematika sesui prosedur dan tidak tahu rumus yang akan digunakan, (4) tidak mampu menyelesaikan soal menggunakan operasi hitung dengan tepat dan salah dihasil diopersi hitungnya, (5) tidak dapat menyelesaikan hasil akhir dan tidak bisa menyimpulkan sesuai dengan yang diminta dalam soal. Adapun penyebabnya adalah tidak bisa menyusun makna kata yang dipikirkan ke bentuk struktur gramatikalnya, tidak memahami makna yang diminta, kurang teliti, kurang bisa mengatur waktu, kurang serius mengikuti pelajaran, kurang dapat menangkap informasi masalah yang terkandung dalam soal, lupa, kurang latihan mengerjakan bentuk soal cerita, salah menangkap informasi dari guru, kurang memahami soal, kurang memahami materi.   Kata kunci: soal cerita, prosedur Newman
PENGARUH KOMUNIKASI DAN MOTIVASI KERJA TERHADAP KINERJA KARYAWAN CV. CIPTA PERDANA SIDOARJO KURNIAWAN, EDI
Jurnal Pendidikan Administrasi Perkantoran (JPAP) Vol 4, No 3 (2016)
Publisher : Jurnal Pendidikan Administrasi Perkantoran (JPAP)

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ABSTRAK Penelitian ini menjelaskan hubungan komunikasi dan motivasi kerja terhadap kinerja karyawan CV. Cipta Perdana Sidoarjo. Penelitian ini bertujuan untuk mengetahui pengaruh komunikasi dan motivasi kerja terhadap kinerja karyawan CV. Cipta Perdana Sidoarjo.Sedangan hipotesis penelitian ini yaitu komunikasi berpengaruh signifikan terhadap kinerja karyawan, motivasi terhadap kinerja karyawan serta komunikasi dan motivasi kerja terhadap kinerja karyawan.Teknik pengumpulan data menggunakan observasi, dokumentasi dan kuesioner. Responden dalam penelitian ini sebanyak 77 responden dengan kriteria memiliki usia 19 tahun.Hasil penelitian menunjukkan bahwa komunikasi dan motivasi kerja berpengaruh positif dan signifikan terhadap kinerja karyawan CV. Cipta Perdana Sidoarjo, hal ini berarti bahwa variabel bebas positif dan berpengaruh terhadap signifikan variabel terikat. Kata Kunci: Komunikasi, Motivasi Kerja, Kinerja Karyawan   ABSTRACT This study describes the relationship of communication and work motivation on employee performance CV. Cipta Perdana Sidoarjo. This study aims to determine the effect of communication and work motivation on employee performance CV. Cipta Perdana Sidoarjo.Whereas research hypothesis is that communication significantly influence employee performance, motivation on employee performance as well as communication and work motivation on employee performance. Data collection technique used observation, documentation and questionnaires. Respondents in this study were 77 respondents to the criteria of having the age of 19 years The results showed that communication and work motivation positive and significant impact on employee performance CV. Cipta Perdana Sidoarjo, this means that the independent variable positive and significant effect on the dependent variable. Keywords: Communication, Work Motivation, Employee Performance