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All Journal Jurnal Teknik ITS Jurnal Riset Industri Hasil Hutan CCIT (Creative Communication and Innovative Technology) Journal Fairness and Justice: Jurnal Ilmiah Ilmu Hukum SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Causa: Jurnal Hukum dan Kewarganegaraan

Djoko Purwanto

Kementerian Perindustrian

Author-ID : 255065

Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

Published : 12 Documents Claim Missing Document

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EDGE DETECTION USING CELLULAR NEURAL NETWORK AND TEMPLATE OPTIMIZATION Widodo Budiharto; Djoko Purwanto; Mauridhi Hery Purnomo
CCIT Journal Vol 4 No 1 (2010): CCIT JOURNAL
Publisher : Universitas Raharja

Result of edge detection using CNN could be not optimal, because the optimal result is based on template applied to the images. During the first years after the introduction of the CNN, many templates were designed by cut and try techniques. Today, several methods are available for generating CNN templates or algorithms. In this paper, we presented a method to make the optimal result of edge detection by using TEMPO (Template Optimization). Result shown that template optimization improves the image quality of the edges and noise are reduced. Simulation for edge detection uses CANDY Simulator, then we implementing the program and optimized template using MATLAB. Comparing to Canny and Sobel operators, image shapes result from CNN edge detector also show more realistic and effective to user.

Algoritma Menghadang Bola dengan Metode Fuzzy Logic untuk Robot Penjaga Gawang Sepak Bola Beroda Kamal Arief; Djoko Purwanto; Hendra Kusuma
Jurnal Teknik ITS Vol 7, No 2 (2018)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Robot sepak bola beroda adalah suatu robot yang bekerja secara tim untuk melakukan permainan sepak bola. Peran penjaga gawang dalam permainan ini sangat vital karena merupakan pertahanan terakhir sebelum mendapatkan gol. Oleh karena itu, perlu penjagaan yang responsif dalam menghadang bola. Untuk mendapatkan penghadangan bola yang responsif metode Fuzzy Logic dapat diterapkan disini. Input Fuzzy Logic dalam penelitian ini berupa sudut bola terhadap robot dan kecepatan pergerakan bola. Dengan mengetahui sudut bola terhadap robot kita akan mendapatkan orientasi pergerakan robot tersebut menuju bola. Lalu, dengan mengetahui kecepatan bola kita akan mendapatkan kecepatan robot yang diperlukan untuk menghadang bola dengan tepat. Robot penjaga gawang pada tugas akhir kali ini menggunakan robot dari Tim Robot Sepak Bola Beroda ITS. Pengujian dalam penelitian ini untuk mengetahui respon robot dalam menghadang bola pada setiap tendangan. Pada hasil pengujian yang dilakukan robot telah berhasil menghadang bola dengan tepat, dari 10 percobaan tendangan, robot ini dapat menghadang 7 tendangan. Persentase penyelamatan yaitu 70%. Dari data sudut bola, kecepatan pergerakan bola dan keluaran dari metode fuzzy sesuai dengan rule yang direncanakan.

PENINGKATAN KENAMPAKAN SERAT DAN WARNA BEBERAPA JENIS KAYU KURANG DIKENAL UNTUK BAHAN MEBEL Djoko Purwanto
Jurnal Riset Industri Hasil Hutan Vol 2, No 1 (2010)
Publisher : Kementerian Perindustrian

Improved performance of fibers and colors some non commercial timber species for furniture two materials. This study used three types of non commercial wood were Lua (Ficus glomevata Roxb), Tarap (Arthocarpus sp) and Kambang (Goniothalamus sp). Finishing materials used Poly Urethane (PU), Nitro Cellulose (NC), and Antique Finish (AF). Number of spray to finishing material is one time and two times. Results showed that treatment of the finishing process using PU, NC and AF can increase the value of fiber and color performance is quite interesting and attractive, althouht it was decreasing of brightness a decrease in brightness of colors. Spraying of finishing materials one time and two times the power is not obtained by sticking a significant difference. The using of finishing materials to produce type PU adhesive power is better than NC and AF.Keywords: non commercial wood, fibre, colors

Ekstraksi Zat Warna dari Kulit Kayu Galam (Melaleuca leucadendron Linn) dan Evaluasi dalam Pewarnaan Kain Satin (The Extraction of Natural Dyes from Galam (Melaleuca leucadendron Linn) Bark and The Evaluation on Satin Dye Application) Rinne Nintasari; Djoko Purwanto
Jurnal Riset Industri Hasil Hutan Vol 8, No 2 (2016)
Publisher : Kementerian Perindustrian

Galam bark has not been widely used, it was only stacked and burned. Tree bark usually contains lignocellulose and natural dye. This study aimed to evaluate the application of galam bark for natural dyes on fabric. Galam bark was extracted using soxhlet and maceration methods, with time and solvent extraction variations. The obtained natural dye was used for dyeing using lime and alum for fixation. The results showed that the soxhlet extraction with water as the solvent for 5 hours produced dye with pH value 7 (neutral) and color sharpness 21 PtCo. The soxhlet extraction with water as the solvent for 7 hours produced dye with pH 5 (acid) and the highest color sharpness 68 PtCo. The most favorable color (value 3.3) was obtained from the soxhlet extraction technique with alum fixation. The highest color adsorption value (1.95%) was obtained from the lime fixation process. The natural dye extracted from Galam bark produced color sharpness, dyes and color absorption that had not met the expected result.Keywords: galam bark, extraction, dye, fabric dyeing

PAPAN GYPSUM DARI SERBUK KAYU DAN SENYAWA BOR TERHADAP SIFAT MEKANIK DAN UJI BAKAR Djoko Purwanto
Jurnal Riset Industri Hasil Hutan Vol 5, No 2 (2013)
Publisher : Kementerian Perindustrian

The using saw dust Lua, Kambang, Tarap wood and addition of boron solution on Modulus of Rupture (MOR), Modulus of Elasticity (MOE) and the fire resistant gypsum boar. The purpose of using saw dust wood and down the process of fire gypsum board. Treatment research that used of particle size (40 mesh and 60 mesh) saw dust wood, the percentage of sawdust and gypsum (300%, 400% and 500%), and the percentage of boron solution (1% and 2%). The results showed that the average value of Modulus of Rupture is between 16.68 to 31.11 kg/cm2; average Modulus of Elasticity is between 1129.80 to 3972.32 kg/cm2, and the average value of the fire resistant is between 20.32 to 46.88%. Value of the largest / best for Modulus of Rupture (31.11 kg/cm2), Modulus of Elasticity (3972.32 kg/cm2), and the burned area (20.32%) resulted tha tratment of sawdust particle size Kambang 40 mesh, the percentage wood sawdust and gypsum 500% and 2% boron solution. The increasing particle size saw dust, and the amount of concentration gypsum, then the value Modulus of Rupture and ), Modulus of Elasticity the greater, and percentage the fire resistant small.Keywords: gypsum board, wood sawdust, boron solution, mechanical strength, fire resistant.

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL Djoko Purwanto
Jurnal Riset Industri Hasil Hutan Vol 4, No 1 (2012)
Publisher : Kementerian Perindustrian

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

ANALISA SIFAT KETEGUHAN PATAH DAN TEKAN BETON SEMEN DARI TULANG ROTAN Djoko Purwanto
Jurnal Riset Industri Hasil Hutan Vol 6, No 2 (2014)
Publisher : Kementerian Perindustrian

Indonesia has the potential of rattan is enough large, but the value of the sale and utilization is still limited as materials for baskets, furniture, handicrafts and so on. This research purpose to obtain bending and compressure strength properties when the rattan used for substitution of iron materaial making to cement concrete building simple houses. The raw material of used for research this is rattan has done processing (preservation and drying). Cement concrete frame made of rattan and molds for casting. Concrete frame rattan incorporated in the mold and filled dough (cement: gravel: sand = 1: 2: 3 plus water as needed). Treatment was observed that the diameter rattan (A) which includes: 8 mm (a1), 10 mm (a2) and 12 mm (a3); and the distance between the iron ring (B) which includes 11 cm (b1); 15 cm (b2); and 19 cm (b3). The number of repeat 3 times. Parameters observed bending and compressure strength.The results of the research rattan diameter 8-12 mm and the distance ring iron 11-19 cm produces bending strength from 18.24 to 40.13 kg /cm2 lower than cement concrete from iron materials (95.76 to 120.36 kg / cm2); and compressure strength from 28.33 to 42.85 kg/cm2 larger than from iron cement concrete materials (20 to 34.67kg/cm2). The results of the research show bending strength from rattan lower and compressure sterngth than big concrete from iron.Keywords: rattan, cement concrete, bending strength, compressure strength

SIFAT PAPAN PARTIKEL DARI SERAT TANDAN KOSONG SAWIT DAN SERBUK KAYU DENGAN PEREKAT UREA FORMALDEHIDA (The Properties of Particle Board from Oil Palm Empty Fruit Bunches Fiber Sawdust with Urea Formaldehyde Resin) Djoko Purwanto
Jurnal Riset Industri Hasil Hutan Vol 8, No 1 (2016)
Publisher : Kementerian Perindustrian

A palm oil mill with a capacity of hundred thousand tons of fresh fruit bunches per year will produce palm fiber waste about 12,000 tons. Recently, the use of palm empty fruit bunches (OPEFB) fiber is as fuel for electricity generation in the industry. Palm fiber waste contains lignocellulose materials as a feedstock to particle board manufacture. The aim of this research is to evaluate the properties of particle board from a mixture of OPEFB fiber and sawdust. The ratio of OPEFB fiber and sawdust are 100% : 0%; 75% : 25%; 50% : 50%; 25% : 75% and 0% : 100%, plus urea formaldehyde adhesive in a concentration of 11%. The boards were pressed using a clamp pressure of 16 kg/cm2 for 15 minutes at a temperature of 110 – 120 0C. The testing methods and standards of physical properties (moisture contents, thickness swelling, density) and mechanical (modulus of elasticity/MOE, modulus of rupture/MOR, screw withdrawal and internal bond strengths) refers to the SNI. 03 – 2105 - 2006. The results showed that the particle board made from 100% OPEFB fiber produces modulus of elasticity/MOE 1594.88 kg/cm2; modulus of rupture/MOR 18.08 kg/cm2; screw withdrawal 31.34 kg/cm2 and internal bond strength 0.86 kg/cm2. The addition of sawdust for 50% can improve modulus of elasticity/MOE, modulus of rupture/MOR and internal bond strength.

Peningkatan Ekonomi Rumah Tangga Melalui Budidaya Sayuran Organik Berbasis Kemitraan Dan Berwawasan Lingkungan di Kelurahan Jebres Surakarta Djoko Purwanto; Catur Sugiarto; Pram Suryanadi; Tastaftiyan Risfandy; Sunarjanto Sunarjanto; Muhammad Yusuf Indra Purnama
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 8, No 1 (2019)
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v8i1.40280

Peningkatan Ekonomi Rumah Tangga Melalui Budidaya Sayuran Organik Berbasis Kemitraan dan Berwawasan Lingkungan di Kelurahan Jebres Surakarta dimaksudkan untuk memberikan salah satu alternatif bagi pemenuhan kebutuhan sayuran organik yang sehat bagi keluarga di wilayah Kelurahan Jebres Surakarta. Kegiatan tersebut dimaksudkan selain pemenuhan terhadap kebutuhan sayuran yang sehat, tetapi secara ekonomis juga memberikan manfaat terhadap penghematan pengeluaran belanja sehari-hari khususnya sayuran. Di sisi yang lain, budidaya tanaman sayuran organik yang sehat, segar dan hijau memberikan dampak positif terhadap lingkungan sekitarnya yang semakin asri dan sehat. Kegiatan Pengabdian Kepada Masyarakat ini melibatkan ibu-ibu PKK di wilayah Kelurahan Jebres termasuk ibu-ibu PKK RW 10 Jebres Surakarta sebagai salah satu mitra dalam berbudidaya sayuran organik. Ibu-ibu PKK RW 10 Jebres Surakarta nantinya akan memperoleh ilmu praktis tentang budidaya sayuran organik yang dapat diaplikasikan dikemudian hari. Disamping itu peserta akan memperoleh bekal bertanam yang berupa media tanam dan benih sayur, misalnya: sawi, kangkung atau selada.

PERANAN BADAN PERMUSYAWARATAN DESA DALAM PENYELENGGARAAN PEMERINTAHAN DESA MENURUT UNDANG-UNDANG NO. 32 TAHUN 2004 djoko Purwanto
FAIRNESS AND JUSTICE Vol 9, No 1 (2013): FAIRNESS AND JUSTICE
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/.v9i17.625

Badan Permusyawaratan Desa merupakan lembaga perwujudan demokrasi dalam penyelenggaraan pemerintahan desa. BPD dapat dianggap sebagai "parlemen"-nya desa. BPD merupakan lembaga baru di desa pada era otonomi daerah di Indonesia. Peranan BPD menurut Pasal 209 UU No. 32 tahun 2004 tentang Pemerintahan Daerah adalah berfungsi menetapkan peraturan desa bersama Kepala desa, menampung dan menyalurkan aspirasi masyarakat, lalu diimplementasikan peran BPD pada Peraturan Pemerintah yang mengaturnya yaitu Pasal 35 PP tahun 2005 tentang Desa bahwa BPD juga mempunyai wewenang yang luas yaitu mengawasi pelaksanaan Peraturan Desa.Wewenang Badan Perwakilan Desa yang bermasalah berkaitan peraturan desa, yang dalam Undang- Undang No. 32 tahun 2004 dijelaskan terdapat campur tangan BPD dalam pembuatannya. Sekarang menjadi tidak jelas implementasinya pada Undang-Undang No. 12 tahun 2011 tentang Pembentukan Perundang-undangan, disitu tidak disebutkan tentang peraturan desa sama sekali padahal pada Undang-Undang sebelumnya yaitu Undang-Undang No. 10 Tahun 2004 disebutkan dalam Pasal 7 ayat (2) huruf c dengan jelas menyebutkan ”Peraturan Desa/peraturan yang setingkat, dibuat oleh badan perwakilan desa atau nama lainnya bersama dengan kepala desa atau nama lainnya.” dan dengan adanya UU Nomor 12 tahun 2011 jelas bahwa dalam Pasal 7 hanya menyebutkan jenis dan hierarki perundangan hanya sampai peraturan daerah.Kata kunci: Wewenang, Peraturan Daerah

Co-Authors Ahmad Firdaus Catur Sugiarto Dadet Pramadihanto Hendra Kusuma Kamal Arief Mauridhi Hery Purnomo Muhammad Yusuf Indra Purnama Pram Suryanadi Rinne Nintasari Sunarjanto Sunarjanto Tastaftiyan Risfandy Widodo Budiharto Zainal Arief

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