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SMART BOX BERBASIS SENSOR CAHAYA PHOTODIODA GUNA MENYALAKAN / MEMATIKAN PERALATAN ELEKTRONIK SECARA OTOMATIS
Get PDFBeberapa alat elektronik seperti ac, kipas angin, televisi merupakan salah satu kebutuhan bagi hidupmanusia. Apalagi dengan banyaknya peralatan elektronik membuat kita sebagai pengguna harus menggunakannyadengan cermat. Banyak ditemukan dalam kehidupan sehari hari permasalahan yang terjadi dalam hal menyalakan /mematikan peralatan elektronik, seperti orang yang lupa mematikan peralatan elektronik setelah dipakai. Selain itubanyaknya peralatan elektronik yang dipakai seperti misalnya AC di dalam suatu masjid yang besar membuatseseorang yang menyalakan / mematikan AC membutuh waktu yang lama. Sehingga dengan kondisi yang demikiandiperlukanlah sebuah alat untuk menunjang efisiensi dalam pemakaian elektronik terutama dalam hal menyalakan /mematikan peralatan tersebut. Maka dari itu kami menggagas sebuah ide Alat Smart Box Berbasis Sensor CahayaPhotodioda guna Menyalakan / Mematikan Peralatan Elektronik Secara Otomatis hanya dengan menggunakan sebuahID card. Metode yang kami gunakan dalam penelitian ini dengan melakukan pengujian terhadap sensor photodiode.Hasil penelitian ini menghasilkan sebuah sistem pendeteksi ID Card, dimana alat ini dapat beroperasi dengan baiksecara otomatis hanya dengan memasukkan sebuah ID Card yang berbasis Photodioda sebagai sensor cahaya
Dynamic System Modeling of Renewable Energy Diversification at ITS Surabaya as a Sustainable University Management Effort
Get PDFDiversification is an effort to diversify various energy sources through reducing the use of fossil energy sources and substituting them with other energy sources including RE in order to optimize energy supply. Meanwhile, energy conservation is a systematic, planned and integrated effort to conserve existing energy resources and increase the efficiency of their use. Energy has a very significant role in human life in all sectors. Where energy demand in the commercial sector such as offices and services is still largely dominated by electricity around 60% -70%. Where the management is still largely managed by the State Electricity Company (PLN). The electricity consumption of the ITS Surabaya campus in 2019 around 9,586,857.72 kWh / year is still supported by PLN with a total expenditure of more than 9 billion. Considering the Indonesian government's program on the Target of Diversification of RUEN at least 23% in 2025 and 31% in 2050 and one of the 2030 Agenda for Sustainable Development Goals (SDGs) globally namely clean and affordable energy, the ITS Surabaya management effort is to achieve diversification of energy sources 50% renewable as stated in the 2015-2020 RENSTRA Target. The effort to diversify this renewable energy is by building a 16 KWP On Grid Solar Power Plant in the Research Center Building, which has produced around 26,290.92 kWh / year during the 2019 period
Dewan Redaksi
Get PDFPuji syukur kami sampaikan kepadaNya. Kini tiba saatnya untuk menerbitkan Volume 5 Edisi 1, yaitu JMAIF 5(1) Januari 2021. Tahun ini, merupakan tahun kedua, JMAIF diterbitkan dalam Edisi Reguler empat kali setahun. Jumlah artikel per penerbitan diatur sebanyak 6 buah artikel, sebagai jumlah baku.Selanjutnya, Edisi Khusus dan Edisi Suplemen hanya akan diterbitkan bila sangat-sangat dibutuhkan.Pada Edisi Januari 2021, JMAIF 5(1) terbit agak terlambat. Keterlambatan ini harus diperbaiki untuk Edisi JMAIF 5(2) pada bulan April 2021 nanti. Kondisi Manajemen masih belum pulih karena adanya Kondisi LockDown
EFFICIENT FATIGUE LIFE ASSESSMENT OF COMPOSITE MATERIALS BY USING A HYBRID SURROGATE MODELING
Get PDFIn this study, hybrid surrogate and nonlinear autoregressive with exogenous inputs (NARX) model is developed and presented as data-driven based predictive model for efficient fatigue life assessment of composite materials. Surrogate modeling based upon wavelet neural networks (WNN) is employed to efficiently unveil mathematical pattern in S-N data, but costly to get from experiments. Moreover, the NARX architecture is chosen in order to enable multi-step ahead prediction in fatigue life assessment of multivariable amplitude loadings. By observing fatigue data as dynamic data of stress ratio series, it is shown that the hybrid model produces reasonably accurate fatigue life prediction by using fatigue data from two stress ratio values only. The use of two stress ratio values also allows usage of more limited fatigue data in the lifetime prediction. The WNN-NARX surrogate model is tested with well-known fatigue data in literature. Several composite materials examined in this study show the efficacy and robustness of the proposed model
Analisis Degradasi Performa Marka Jalan Thermoplastik Pada Jalan Tol
Get PDFThe program for maintenance and replacement of toll road surface markings aims at meeting the standards of performance set out in the Minimum Service Standards regarding for the substance of safety for road guidance indicators, which is road surface markings for the safety and comfort of toll road users. Good visibility of the road surface markings is necessary as it helps reducing the chance of traffic accidents. The problem encountered is a drastic decrease in the reflectivity level of road surface markings in a short time. The study was conducted to determine the degradation of the value of road surface markings reflectivity during the service life of the maintenance methods on the routine and periodic markers. The research was conducted experimentally by making a mock up and testing the reflectivity at the existing location using a reflectometer on 2 test models. The results showed a reflectivity degradation was 43% in the marking method carried out directly over the old road surface markings with an average reflectivity value of 401 mcd/m2/lux. This study concluded the road surface markings applied to the asphalt pavement. The thermoplastic material against the glass bead binds perfectly, while the road surface markings painted on the old road surface markings of the thermoplastic material against the glass bead do not bind properly so that the glass beads are easily detache
Pengaruh Lama Pemeraman Terhadap Karakteristik Marshall Campuran Aspal Beton dengan Asbuton dan Bio Aditif Gondorukem
Get PDFCampuran aspal dengan Asbuton mempunyai kualitas yang lebih rendah dari pada campuran dengan aspal minyak. Kandungan aspal yang tidak homogen pada mineral Asbuton merupakan salah satu penyebab. Disamping itu karakteristik aspal dalam Asbuton besifat keras, sehingga perlu diremajakan.Peremajaan ini berfungsi untuk membuat aspal menjadi lunak sehingga mempunyai kemampuan untuk mengikat agregat. Proses ini memerlukan waktu tertentu, secara umum diistilahkan dengan pemeraman. Lama pemeraman berpengaruh terhadap kinerja Marshall campuran , karena terjadi proses pengaktifkan bitumen pada Asbuton, sehingga agregat terselimuti secara merata. Penambahan aditif juga dapat meningkatkan kenerja campuran aspal beton. Salah satu aditif yang dapat digunakan adalah gondorukem (bio-aditif). Tujuan penelitian mengetahui karakteristik Marshall campuran aspal beton berdasarkan lama pemeraman dan penambahan gondorukem (bio-aditif). Penelitian ini menggunakan 4.5% bahan peremaja, 25% Asbuton, bio-aditif gondorukem dengan variasi 0%, 1%,2%,3% serta kadar aspal optimum 7.5 %. Variasi waktu pemeraman campuranyaitu 0 hari, 6 hari, 12 hari dan 18 hari. Hasil penelitian menunjukan lama pemeraman dan persentase penambahan bio-aditif (gondorukem) berpengaruh terhadap karakteristik Marshall campuran aspal beton. Karakteristik terbaik didapat dengan lama pemeraman 12 hari dan penambahan bio-aditif (gondorukem) sebesar 2%
MATERIAL LOOPS POTENTIAL IN POST-DISASTER TRANSITIONAL SHELTER: LEARNING FROM 2010 MERAPI ERUPTION
Get PDFDue to the geographic condition of the country, Indonesia is very vulnerable to natural disasters (BNPB, 2017). As a response, this country has various mechanisms of assistance to disaster-affected communities and assistance to fulfil basic needs for disaster victims, one of which includes the provision of ‘huntara’ as temporary shelter for the victims (BNPB, 2008). Because of its temporary nature, transitional shelters in Indonesia generally have a relatively short life cycle of building materials and may produce quite the amount of waste which would be harmful to the environment. This study attempts to understand the material life cycle process in transitional shelters built during the eruption of Mount Merapi Eruption in 2010. This study uses the approach of qualitative research with two main data collection methods—observations and interviews. This study found that the design of transitional shelter for this disaster had allowed for most of the building components to principles of Design for Disassembly, which supports the potential for material loops to occur and possibly to fulfil the characteristics of sustainable transitional shelter. However, neither the victims nor the aid providers were fully aware of this potential: thus, it could not be optimally utilised. This condition is quite unfortunate, considering that Indonesia is very prone to disasters so that transitional shelters will often be needed. Therefore, further studies are required to formulate various design standards for transitional shelter in Indonesia to optimise the potential for longevity and minimise environmental impacts
Model Kredibilitas Bühlmann dengan Frekuensi Klaim Berdistribusi Binomial Negatif-Lindley
Get PDFIn this article, we develop a parametric Bühlmann credibility model with the frequency of claims that are assumed following the Negative Binomial- Lindley distribution. The Estimator of the quantities in the Bühlmann model have provided for this distribution using methods commonly used in the greatest accuracy credibility. The premium estimation that resulted in this model is a linear combination of the past claims which gives a minimum error square. The momen function of the Binomial-Lindley distribution is very helpful to determine these Bühlmann’s quantities. Application simulations of this model are also given for simple data claims along with the algorithm. However, it gives an appreciable credibility factor value, this model requires many past claims to get a good premium estimation
EFFECT OF TRISODUM PHOSPHAT CONCENTRATION ON THE MORPHOLOGY AND CORROSION RESISTANCE OF MAGNESIUM ALLOY AZ31B USING PLASMA ELECTROLYTIC OXIDATION (PEO)
No full textMagnesium is one of the candidate materials for biodegradable implants. Magnesium has the same mechanical properties as human bone, but the degradation rate of magnesium fast. Surface engineering technology is required to decrease the degradation rate on magnesium substrate. This research, using the surface engineering technology of Plasma Electrolytic Oxidation (PEO). the electrolyte solution of PEO used was KOH and Na3PO4.12H2O. The KOH concentration is 1g/l and Na3PO4.12H2O concentration was varied 0.5, 1, and 2.26 g/l. From the XRD analysis, was found MgO and Mg3(PO4)2 and there are pores on the surface. When the Na3PO4.12H2O concentration is increased until 2.26 g/l the pores are homogenous, dense, and large. From the potentiodynamic polarization test results that PEO coating can decrease the corrosion rate of magnesium AZ31B from 50.219 mmpy to 0.1368 mmpy