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Pengaruh Sambaran Petir Langsung pada Variasi Ketinggian Menara Vertikal terhadap Tegangan Induksi yang Dirasakan oleh Jaringan Distribusi Disekitarnya
No full textIf the top of telecommunication towers or radio or television have been struck by a lightning, distribution lines in the vicinity of those would immediately underwent an induced overvoltage impuls. Magnitude of the induced voltage impuls depend on how tall the tower above ground. Such lightning stroke is type of an indirect lightning stroke which is always appear in the problem of the induced overvoltage phenomenon on overhead distribution lines. Examinant of the effects of various height of the tower and the distance parameter between the tower and the route of distribution line on rate of rise of the induced voltage of the lightning is undertaken in this paper, and the computer is as its simulator. The method of the simulation of a lightning stroke in the vicinity of distribution line and its formulation is adopted from a simulation model that has been_ proposed by Ishii et al. (1994) and Eriksson et al (1982) respectively. The result of the simulation show that presence of a vertical tower structure in the vicinity of the distribution line route will result in a lower induced voltage (on the order of 13.4 %), and effect of tower height parameter is very significant for the assumed conditions. It is proposed that this significant parameter be studied extensively in order to predict the induced voltage accurately
Konsep Hulu-Teben pada Permukiman Tradisional Bali Pegunungan/Bali Aga di Desa Adat Bayung Gede Kecamatan Kintamani Kabupaten Bangli, Bali
Full text linkThe research tries to explain the specific Hulu-Teben concept of Bayung Gede custom village as dialog result between the normative Hulu-Concept as a background knowledge with the phenomena of spatials system anomaly at Bayung Gede customvillage.The research utilized phenomenology paradigm of Hussrel where Hulu-Teben of custom village in general takes a role as background knowledge. It’s discussed with the macro spatial system of Bayung Gede custom village to show the uniqueness spatial as the architectural anomaly of mountain village. Deepening study of the anomaly above was done in gaining the community’s social-culture background/their local wisdom as thetranscendental consciousness. Further Hussrel emphasizes that the highest transcendental peak is obtained by doing the three steps of reduction, i.e : (i) a phenomenological reduction of all related information to get some empirical themes, such as ; (a) Upperengga Mala and (b) Tegak Paumahan, (ii) the eidetic reduction of the three empirical themes to generate the architecture concept and (iii) the final reduction is transcendental reduction to discovery the architecture local theory. In the context within the research of Bayung Gede custom village, the aim is only focused at the architecture concept.The research results show that Hulu-Teben concept of Bayung Gede custom village has adapted Hulu-Teben in general shown by existence of Para Kahyangan Desa (custom village religious indicator) as the appreciating expression form for community’s ancestor. On the other hand, there are some spatial anomalies as an additional and enriching the general Hulu-Teben concept. Those are related with their local wisdom, it’s not only for appreciating their ancestors (upper level of human being) but it’s also for : (i) the former king of Jaya Pangus and the queen of Ulun Danu Batur (upper level of human being but they’re not ancestors), (ii) the equal level of human being and (iii) lower level of human being (the plantation, the animal and other creature).Keyword : Hulu-Teben spatial “anomalies” Bayung Gede, Custom Villag
Penentuan Strategi Saluran Distribusi Berdasarkan Karakteristik Produk Sukses
Full text linkThis research was done to determine the distribution channel strategy based on characteristics of successful products. Totaling 100 products from 15 types of product categories were used as a research object. Independent variables consisted of product characteristic variables and distribution channel variable. Product characteristic variables consisted of price, safety, feature, product performance, service, convenience, brand, and design. Coverage was used as adistribution channel variable and market share as a dependent variable. Ordinary Kano and Modified Kano were used to construct some mathematical models. Each model then was evaluated with coefficient determination test. The mathematical model constructed in this study has R2 value 16,26%. Coverage included in one-dimensional requirement which means adding value to coverage variable will linearly increase market share. Keyword: channel distribution strategy, product characteristics, Kano model, mathematical model
Pengaruh Jenis Edukasi Terhadap Performansi Pengemudi dengan Karakter Risk Taker
Full text linkThe Government has made traffic laws and regulations to create a motor vehicle safety and in order to reduce the number of fatal and serious injuries that occur in motor vehicle crashes every year. However, it’s not much effecting to diminish numbers of road accident causing by lack of knowledge, insights, driving experience, and often to take a risk. This study aimed to identify the effective education in safety driving to improve the driver’s performance which has a risk taker characteristic. This study was conducted in a laboratory simulation of ergonomics with the respondent amounted 30 people aged 18-25 years and classified into three groups: 10 respondents are educated by using a module, 10 respondents are educated by watching a video, and 10 respondents directly practice using a simulator. Holt & Laury’s Questionnaire is used to knowing Risk Attitude of respondents. This study showed that video education is the most effective education to reduce a numbers of driving perform interference for those man and woman’s respondents and afterwards followed by module’s education and the last intended by without educationKeywords: risk taker, impaired driving performance, performance time on a task
Retrofitting Sambungan Kolom-Balok Beton Bertulang Ekspansi Planar Segitiga dengan Variasi Ukuran
Full text linkHighly seismic activities in Indonesia, that is followed by a lot of high magnitude earthquakes, make awareness of the people to anticipate the damage that caused by this disaster. The Codes of earthquake have changed and are accompanied by the change of seismic region. There must be some efforts to improve the existing building structure. One of the efforts is retrofitting the beam-column joint which is the weakest element of structure in the building when subjected to earthquake loading. Four beam-column joint reinforced concrete specimens, namely SJC, SJ-01, SJ-02, and SJ-03, made of normal concrete and plain reinforcement were tested in this experimental program. Beam with 150 mm width, 250 mm high, and 1500 length be jointed with column that has section area of 250 mm x 250 mm, and 1750 mm length. The specimens of SJ-01, SJ-02 and SJ-03 were retrofitted by triangular voute in lower side of the beam in the beam column joint region with 125 mm, 187.5 mm, and 250 mm side length, respectively. All specimens are tested with cyclic loading using hydraulic actuator. The results show that the increasing strength of specimen SJ-01 and SJ-03 compare to the reference specimen were 12.74% and 10.29%, respectively. While the strength of specimen SJ-02 a little bit decreasescompare to the reference specimen.Keywords: beam-column joint, reinforced concrete, retrofitting, voute, cyclic loading
Pemilihan Fitur untuk Monitoring dan Klasifikasi Kondisi Pahat
Full text linkTool Condition Monitoring system (TCM) is an application for monitoring condition of tool where mounted on a CNC machining system. A good of TCM application is that which is capable of features mapping the signals obtained from the sensor system to appropriate class (tool condition). This study aimed to optimizing the dataset from the sensor signal in the previous study, with the features selection or features reduction, and with optimization parameters decision-making system to separate the two conditions,that is normal tool and breakage tool.There are 1800x282 dimensional data, where obtained from the two transformed feature in the time domain and frequency domain. The results of the transformation are selected features by comparing three methods of feature selection that is Fishers Discriminant Ratio (FDR), Sequential Forward Selection (SFS). The result of selected method is L-SVM, and there are selected 10 best features by FDR to be input to the neural network backpropagation method. The system had accuracy test 97,8% in normal conditon of tool and 98,9% in breakage condition of tool. Reduction feature by Principal component Analysis (PCA) it's using from selected feature. It takes for understanding how spindle rotate influence to classification the tool condition.Keywords: Optimization, Feature Selection, Feature Reduction, Tool Condition Monitoring, Neural Network
Pengembangan Computer Aided Design(CAD) Warna Batik
Full text linkOne of the problem faced by Indonesian batik industry is about environment issue. This is because batik industry uses synthetic dyes on their coloring process. The use of natural dyes for batik makers deemed to be impractical and has many disadvantages, including lack of bright colors, longer process, and more expensive. Therefore, this research aims to reduce the use of synthetic dye in batik design process, by developing computer aided batik color design (CAD for batik color). This development includes a method for predicting color, methods and algorithms used in the CAD and measurement of its usability level. The results showed that the method can predict color with average error rate of 5% (< 10% tolerance error established), CAD for batik color has been able to run as the concept of batik making, and its usability average value is 3.86. Therefore, it is concluded that CAD for batik color has usability aspects and can be implemented as a design batik color tool that can be operated by its user.Keywords: batik, creative, design, CAD, colo
Perubahan Sistem Struktur Bangunan Rumah Bugis Sulawesi Selatan
No full text A structural system determines the strength of the building in order to be able to survive in the long period of time. Functioning as residential house, Bugis houses have been through a long period of time and are supported by the use of specific structural system of the building. This structural system has changed in many ways and forms. This research is aimed at identifying the changes that have occurred in the structural system of old Bugis houses and factors that influence such changes. This research employed descriptive models and typology. Descriptive models were used to reveal the phenomenon of point movement of the structural system aided by SAP 2000 software. Typology was used to classify the types of changes that occurred in the system. The research revealed that the structural system of building of Bugis houses has changed by means of cross and internal system. The system used in the past had lower strength than that used in the next period. The characteristics of the changes in the structural system improved by means of transfer of the use of the construction method from the use of free placement to the use of stiff connection. This change was influenced by three aspects, namely of natural resource aspect, stiffness aspect, and cultural and belief aspects. The natural resource aspect is related to the availability of building materials in terms of quality and quantity. The building of Bugis houses in the past used higher quality materials than the system that developed afterwards. The stiffness is related to the efforts of Bugis technocrats in the past in optimizing the structural system. The results of the analysis indicated that the extent of the horizontal of a point movement is in proportion to the height of point position of the structural system. The higher the location, the greater the movement. The culture and belief are related to the survival for individual and group.Keywords: changes, structural system, Bugis house
Evaluasi Medical Response Preparedness Pada Unit Gawat Darurat (Studi Kasus di IGD Rumah Sakit Umum Pusat Dr. Sardjito Yogyakarta)
No full text In the last decade, there were 2 disasters that killed many people in Yogyakarta, such as earthquake in 2006 and Merapi eruption in 2010. Therefore, as one of reference hospitals,RSUP Dr. Sardjito must have good medical response preparedness to handle victims that were evacuated to RSUP Dr. Sardjito, therefore evaluation of medical response preparedness that has been applied in RSUP Dr. Sardjito is needed, in purpose deciding resources allocation.Simulation is used to evaluate medical response preparedness. Model is built based on real system when Merapi eruption is happened and on extreme points of arrival rate of victims to RSUP Dr. Sardjito, that is on 5 and 7 November 2010. Then the model is simulated and evaluated by using average waiting time for victims to be handled as indicator. The evaluation result will decide resources allocation that is needed. simulation of model 5 November results average waiting time for patient with severity 1, 2, 3, and 4 is 2991,26; 72,19; 0; 0 minutes. While model 7 November results waiting time for patient with severity 2, 3, and 4 is 0,22; 0; 0 minutes. From the results, sensitivity analysis is used to decide resources allocation needs.Keywords: medical responses, emergency department, simulation, disaster, system improvemen
Analisis Kualitas dan Kuantitas Steganografi dengan Interpolasi pada Citra Medis
No full textNowadays sharing of medical images through Internet is very popular to make telediangosis, telesurgeries and teleconsultation. Steganography is an art of hiding information inside of a media, which is called cover media. This research presents steganography image on medical image. The medical image is divided into two areas edge and non-edge area. Each area has its embedding and extraction algorithm. A medical data in a text form is hidden insidemedical image by interpolation technique. Interpolation technique is used to increase the embedding capacity. After steganography process, medical data and its cover image and its earlier image must be recovered and reversibled from extraction its stego image. The results show an average of the optimum embedding capacity is 103,404 bit with average PSNR is 41.8682 dB. Furthermore, analysis on texture of the stego image is done by this research. The analysis shows the impact of embedding process. The results of texture analysis is embedding process gives a big impact to energy 27.9199%, entropy 5.4725% and skewness 1.5266%.Keywords: steganography, data, medical image, interpolation, texture imag