Jurnal Teknosains
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    EDITORIAL

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    Sekolah Pascasarjana Universitas Gadjah Mada dengan berbagai program studinya menjadi salah satu tempat untuk berkembangnya ilmu-ilmu lintas disiplin. Bukan hanya permasalahan bangsa saja, tetapi juga permasalahan dalam kehidupan manusia di bumi serasa tidak pernah ada habisnya. Dengan dasar keilmuan bidang teknologi, agronomi serta kesehatan, Sekolah Pascasarjana Universitas Gadjah Mada menunjukkan kepeduliannya terhadap beragamnya permasalahan tersebut. Harapannya semoga hasil penelitian yang ditampilkan melalui penerbitan ini dapat memberikan kontribusi akademik sebagai solusi terhadap permasalahan dalam kehidupan

    DENTAL MATERIALS FOUNDATIONS AND APPLICATIONS

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    Rongga mulut merupakan lingkungan yang amat beragam kondisinya. Material yang akan digunakan dalam lingkungan tersebut harus mampu bertahan dalam segala kondisi. Dalam lingkungan rongga mulut hal-hal ini sangat biasa terjadi: perubahan temperatur yang drastis, tekanan mekanis yang besar, melekatnya komunitas mikroorganisme pada semua permukaan maupun adanya serangan bahan kimiawi dari makanan maupun cairan tubuh. Memahami dasardasar ilmu material merupakan kunci untuk dapat mengembangkan material yang cocok dengan lingkungan mulut serta relevan dengan kenyataan klinis yang dihadapi. Dengan mengerti dasar ilmu material diharapkan pembaca dapat memprediksi keberhasilan perawatan dengan material kedokteran gigi. Buku yang ditulis oleh John M. Powers dan John C. Wataha ini menjelaskan material dental dari hal yang paling dasar, yaitu atom penyusunnya, hingga aplikasinya dalam praktik klinis. Consice but precise, begitulah cara materi dalam buku ini disampaikan. Diulas dalam 15 bab plus 1 bab pendahuluan dengan alur yang runtut pada tiap bahasannya. Dimulai dari sifat-sifat material, kegunaan, manipulasi spesifik, serta aplikasi klinis dalam dunia kedokteran gigi, sehingga memudahkan pembaca dalam memahami dan membandingkan tiap material. Setiap akhir dari bab dalam buku ini juga dilengkapi dengan self-test questions, untuk mengukur seberapa dalam pemahaman pembaca terhadap materi yang telah disajikan. Tentunya berbagai material dan teknologi terbaru yang digunakan di kedokteran gigi juga tidak lupa diuraikan

    EDITORIAL

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    Sekolah Pascasarjana Universitas Gadjah Mada mempunyai minat serta program studi yang sangat beragam. Dengan dasar keilmuan dalam bidang teknologi, agronomi, lingkungan, dan kesehatan, maka Sekolah Pascasarjana UGM menjadi tempat bagi pengembangan ilmu-ilmu multi dan lintas disiplin. Sebagai tuntutan dari pengembangan ilmu pengetahuan dan teknologi, Jurnal Teknosains terbit satu tahun – dua kali menjadi wadah untuk mempublikasikan hasil penelitian yang bersifat inovatif

    KERANGKA KERJA PERENCANAAN PENGEMBANGAN PRODUK SEBAGAI PENINGKATAN DAYA SAING INDUSTRI KECIL MENENGAH

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    This study developed a new product development planning framework for small and medium enterprise (SME) in creative industry sector to increase the business competitiveness. The development process referred to the stages of design science research. The development stage adapted the first two stages of the modular function deployment (MFD), those are the description stage of consumer need through the house of quality, and functional decomposition. The study explained that the application of MFD adaptation is effective and adequate to the creative SME condition. The technical concepts were   able to be screened and scored by using pugh selection matrix. However, every technical concepts could not be described into detailed domain functions and means. Therefore, the addition of methods applied in parallel was carried out, that is the concept decomposition with the function means tree, and the technical solution synthesis with the axiomatic design so that the design process is easier to handle. It’s recommended to eliminate the zigzagging process in axiomatic design, since it has been done on the function means tree and the use of customer relationship management data base to support voice of customer

    BUSINESS FEASIBILITY AND STRATEGY OF BUSINESS DEVELOPMENT OF CATFISH HATCHERY IN MINAPOLITAN AREA OF MAGELANG DISTRICT

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    This study aims to (1) identify the feasibility of catfish hatchery business and (2) to know the alternative and strategic priorities that can be applied in the development of catfish hatchery business in the Minapolitan Area of Magelang District. Research location in sub-District of Muntilan, Mungkid, and Sawangan, was chosen by purposive sampling. Respondents were chosen by snowball 42 as samples from farmers and stakeholders related to catfish hatchery business.  Data analysis used on the business feasibility is BEP and R/C ratio criteria. The analysis of business development strategy uses SWOT analysis. The business feasibility analysis tool used is cost analysis, revenue, and nett revenue. Feasibility analysis result obtained BEP revenue of Rp53.587.484,00, BEP production of 255.087,71 unit fish, BEP price of Rp 56.00 per unit fish, and R/C ratio of 1,67. The development of strategy of catfish hatchery business are (1) maintaining good relationship with stakeholders and maximizing natural resources management for business development due to low interest of community on catfish hatchery business, and (2) utilizing expert resources (practitioners and academics) in the field of hatchery by government assistance to improve the quality of seed products and for expanding market size to meet the increased demand

    PENENTUAN LOKASI TEMPAT EVAKUASI AKHIR PENGUNGSI PADA ANCAMAN BENCANA TSUNAMI KOTA PADANG

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    Padang is capital city of West Sumatera whose coastal layout and approximately 50% of population live in low area. It opposites to the Indian Ocean which near the Megathrust subduction which can trigger a powerful earthquake and generate tsunami. Because of the potential risk, important to finding the final evacuated region (TEA) location addressed by evacuee of each affected village, and defining the evacuee population and its susceptive population on each TEA. Defining the location TEA is provided by formulating the linear programming model which minimizing the total traveled distance. Then, defining of population and susceptive of evacuee in each TEA also analyzed to support the response disaster occurred. The optimization model is conducted in three level scenarios of tsunami scale, that are big, medium, and small

    ANALISIS KURVA RESESI ALIRAN DASAR MENGGUNAKAN MODEL RESERVOIR LINIER RECESSION CURVE HYDROOFFICE PADA DAS WURYANTORO KABUPATEN WONOGIRI PROPINSI JAWA TENGAH

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    The hydrograph recession curve expresses the theoretical relationship between the aquifer structure and the flow of groundwater flowing into the river basin channel. These theoretical relationships are often empirically depicted using the base flow recession curve. The hydrograph recession curve is commonly used to estimate the recessionary parameters, aquifer properties and to evaluate alternative hydrological hypotheses. The river basin hydrograph recession curve records the behavior of the relationship between the aquifer structure and its association with groundwater outflow to the river channel. This research was conducted with the aim: to analyze the characteristics of the baseflow recession based on the parameters and coefficients of the recession, and the shape of the individual recession curve and the master recession curve. The characteristics of the baseflow recession to research sub-watershed have the recession curves tend to sloped, describing the water storage well enough. The parameter Q0 (recession early), α and the recession constant Krb ranging from 0,80 – 0,90 for the individual and master recession curve in all three research sub-watershed. This calculation result indicates that the recession characteristics in three research sub-watershed have the condition of water storage is excellent, because they are supported by the aquifer characteristics dominated by the geological structures are more permeable (porous)

    PENDEKATAN ANN (ARTIFICIAL NEURAL NETWORK) UNTUK PENENTUAN PROSENTASE BOBOT PEKERJAAN DAN ESTIMASI NILAI PEKERJAAN STRUKTUR PADA RUMAH SAKIT PRATAMA

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    Pengambilan keputusan dalam estimasi biaya dalam proses perancangan bangunan memiliki peranan penting. Oleh sebab itu kebutuhan akan alat estimasi baik dari sisi desain perencanaan maupun manajemen proyek perlu dikembangkan. Makalah ini membahas manfaat metodologi jaringan syaraf tiruan (Artificial Neural Network) untuk mengatasi masalah estimasi biaya nilai pekerjaan struktural pada tahap proses perancangan bangunan. Nilai pekerjaan struktural sendiri memiliki alokasi yang cukup besar dari total kontrak dan merupakan item pekerjaan yang cukup penting dalam suatu pekerjaan konstruksi bangunan. Data terkait nilai pekerjaan struktural dan desain item pekerjaan dari 8 proyek digunakan untuk pelatihan dan pengujian Metode Artificial Neural Network (ANN) dengan tujuh variabel desain digunakan dalam memprakirakan nilai biaya pekerjaan struktural dari bangunan Rumah Sakit Pratama pada daerah terpencil di Indonesia. Dari simulasi ANN diperoleh persamaan empiris terbaik untuk prakiraan harga kontrak gedung rumah sakit pada tahap perencanaan dengan struktur ANN terbaik 7-9-1 (7 variabel input, 1 hidden layer dengan 9 neuron dan 1 output) dengan hasil akurasi estimasi biaya rata – rata 96.51% tercapai

    EDITORIAL

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    Sekolah Pascasarjana Universitas Gadjah Mada (UGM) mempunyai beragam minat serta program studi. Hal tersebut sesuai dengan Kebijakan Umum Universitas Gadjah Mada yang telah menetapkan tahun 2017-2022 sebagai tahap pendalaman dimana pendidikan pascasarjana lintas disiplin harus menjadi tulang punggung pengembangan ilmu pengetahuan. Dengan berbekal dasar keilmuan bidang teknologi, agronomi dan kesehatan, sehingga lahir hasil-hasil penelitian yang mendasar serta inovatif. Sebagai tuntutan dari pengembangan ilmu pengetahuan dan teknologi, maka Jurnal Teknosains Sekolah Pascasarjana UGM terbit setahun dua kali untuk menjadi wadah publikasinya hasil penelitian

    UJI IRITASI MATERIAL COBALT CHROMIUM SEBAGAI MATERIAL DASAR BONE PLATE UNTUK REKONSTRUKSI MANDIBULA

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    The mandibular bone defect can cause speech disorder, mastication malfunction, and aesthetic problems. The application of plate for mandibular reconstruction can improve the function disorder. Plate material must be strong, resilient, able to adapt to the bone surface, and has good biocompatibility. Cobalt chromium is a cobalt base alloys are often used for implant materials. It has good mechanical properties, biocompatibility, and corrosion resistance. The aim of this study was to investigate the effect of local irritation and tissue response on material cobalt chromium. This study used three albino rabbits were injected by the material powder in polar and nonpolar solvents with intracutaneous injection method, then the treatments were observed on the first, second, and third days. Erythema and edema that occurs were scored based on grading system for intracutaneous (intradermal) reactions. Friedmann test showed no significant difference between treatment groups (p> 0.05). The results showed that erythema and edema arising from irritant reactions are still within normal limits. Irritation occurs due to the release of cobalt chromium ions which trigger hypersensitivity reactions and result in systemic immunity

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