Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168474
Bayu Azmi, Wibisono, A. H. Saputro
A portable gamma ray tomography system has been designed to investigate geothermal power plant pipe scaling. Furthermore, the system could be applied to diagnose industrial processes unit such as pipeline, heat exchanger, and so on. The system consists of mechanical parts, computerized controlled module, a gamma ray source (80 mCi of Cs-137), a scintillation detector NaI(Tl), data acquisition and computer. The mechanical part was designed to meet the portability standard of industrial processes unit such as dimension, position, material type, etc. The investigated object is scanned an in two ways (translation and rotation) of ray transmission to capture attenuated radiation automatically. The result of object investigation is displayed in computer directly using a proposed reconstruction image technique. The reconstruction image was performed using Filtered Back Projection (FBP) algorithm and optimized with the weighted correction factor for each pixel. The weighted correction factor was computed based on the modeling of gamma ray transmission in selected mechanical system. In evaluating the proposed system, experiments were performed using a geothermal power plant pipe that has 275 mm diameter within known scaling form. Steady state water was flowed inside the pipe to simulate multiphase condition in geothermal power plant pipeline. Scanning configuration was set up to 4 mm steps and 32 projections. Based on the chosen evaluation criteria, the reconstruction image of the proposed system shows good result. Finally, the proposed portable gamma ray tomography system is suitable to industrial applications due to its portability and accuracy in detecting the form of pipeline scaling.
设计了一种便携式伽马射线层析成像系统，用于研究地热发电厂管道结垢。此外，该系统还可用于管道、换热器等工业过程单元的故障诊断。该系统由机械部件、计算机控制模块、伽马射线源(80 mCi的Cs-137)、闪烁探测器NaI(Tl)、数据采集和计算机组成。机械部分的尺寸、位置、物料类型等均满足工业加工单元的可移植性标准。对被研究对象进行扫描，并通过两种方式(平移和旋转)的射线透射来自动捕获衰减辐射。利用所提出的重建图像技术，将目标调查结果直接显示在计算机上。重建图像采用滤波反投影(filter Back Projection, FBP)算法，并对每个像素进行加权校正因子优化。根据所选机械系统的伽马射线传输建模，计算加权修正系数。为了评估所提出的系统，实验是使用地热发电厂的管道进行的，该管道在已知的结垢形式内具有275毫米直径。采用稳态水在管道内流动的方法模拟地热发电厂管道的多相状态。扫描配置设置为4毫米步长和32个投影。根据所选择的评价标准，该系统的重建图像显示出良好的效果。最后，所提出的便携式伽马射线层析成像系统由于其便携性和检测管道结垢形式的准确性而适合工业应用。
{"title":"Portable gamma ray tomography system for investigation of geothermal power plant pipe scaling","authors":"Bayu Azmi, Wibisono, A. H. Saputro","doi":"10.1109/QIR.2017.8168474","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168474","url":null,"abstract":"A portable gamma ray tomography system has been designed to investigate geothermal power plant pipe scaling. Furthermore, the system could be applied to diagnose industrial processes unit such as pipeline, heat exchanger, and so on. The system consists of mechanical parts, computerized controlled module, a gamma ray source (80 mCi of Cs-137), a scintillation detector NaI(Tl), data acquisition and computer. The mechanical part was designed to meet the portability standard of industrial processes unit such as dimension, position, material type, etc. The investigated object is scanned an in two ways (translation and rotation) of ray transmission to capture attenuated radiation automatically. The result of object investigation is displayed in computer directly using a proposed reconstruction image technique. The reconstruction image was performed using Filtered Back Projection (FBP) algorithm and optimized with the weighted correction factor for each pixel. The weighted correction factor was computed based on the modeling of gamma ray transmission in selected mechanical system. In evaluating the proposed system, experiments were performed using a geothermal power plant pipe that has 275 mm diameter within known scaling form. Steady state water was flowed inside the pipe to simulate multiphase condition in geothermal power plant pipeline. Scanning configuration was set up to 4 mm steps and 32 projections. Based on the chosen evaluation criteria, the reconstruction image of the proposed system shows good result. Finally, the proposed portable gamma ray tomography system is suitable to industrial applications due to its portability and accuracy in detecting the form of pipeline scaling.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"182 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131387087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168478
Suwandi Dwi Sahputro, Fahmi Fadilah, Nanda Avianto Wicaksono, F. Yusivar
This paper describes the design and implementation of adaptive PID control strategy for controlling the angular velocity of the DC motor. Adaptive PID controller is designed to calculate the control parameters which are tuned adaptively to give desired control performance even if parameters of DC Motor are changed. The controller's parameters are online tuned when the motor is running using a Recursive Least Squares (RLS) method. The controller is able to change the value of the controller's constants to maintain motor performance as it is desired when parameters of DC motor are changed. Initially a Pseudo Random Binary Sequence (PRBS) signal is given to the system for 0.07 seconds to get the estimated transfer function of the plant system (DC motor) using the RLS algorithm. From coefficients of the estimated system's transfer function, the poles of a desired characteristic equation can be obtained for the system that has the appropriate output. Thus, the proportional, integral and derivative constants of controller can be obtained by using online pole placement method. Here, an online identification system is used to determine the new control parameters. The effectiveness of this adaptive PID controller is verified by experimental results using a microcontroller STM32F446.
{"title":"Design and implementation of adaptive PID controller for speed control of DC motor","authors":"Suwandi Dwi Sahputro, Fahmi Fadilah, Nanda Avianto Wicaksono, F. Yusivar","doi":"10.1109/QIR.2017.8168478","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168478","url":null,"abstract":"This paper describes the design and implementation of adaptive PID control strategy for controlling the angular velocity of the DC motor. Adaptive PID controller is designed to calculate the control parameters which are tuned adaptively to give desired control performance even if parameters of DC Motor are changed. The controller's parameters are online tuned when the motor is running using a Recursive Least Squares (RLS) method. The controller is able to change the value of the controller's constants to maintain motor performance as it is desired when parameters of DC motor are changed. Initially a Pseudo Random Binary Sequence (PRBS) signal is given to the system for 0.07 seconds to get the estimated transfer function of the plant system (DC motor) using the RLS algorithm. From coefficients of the estimated system's transfer function, the poles of a desired characteristic equation can be obtained for the system that has the appropriate output. Thus, the proportional, integral and derivative constants of controller can be obtained by using online pole placement method. Here, an online identification system is used to determine the new control parameters. The effectiveness of this adaptive PID controller is verified by experimental results using a microcontroller STM32F446.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132703251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168464
Lin Prasetyani, P. Priambodo
Laser applications in manufacturing processes such as cutting, welding, and engraving processes are become more popular nowadays. High-power and pulsed lasers such as CO2 and Nd:YAG gas lasers are commonly used in applications of metal cutting and welding. Meanwhile, for engraving process laser diode is more preferred due to its properties of compact shape, easy to operate, low power and high efficiency in comparison to CO2 and Nd:YAG laser gas. Owing to the rectangle resonator, the diode laser beam has some inevitable property disadvantages, such as wide-angle divergence, astigmatism and beam profile which has non-ideal elliptical beam shape. These deficiencies lead to a poor quality of beam profile. In order to obtain a high-quality engraving process, two things have to be considered. The first one is a significant requirement of a good beam quality, which is ideally a round beam shape and the second is characterization of burning time and laser intensity for each specific material object. The beam profile quality can be improved by several optical process steps, which finally end up to a perfect Gaussian round beam shape profile. The beam quality improvement can be done by using several-lens structures, for instances: (1) a combination of two sequential cylindrical lenses; (2) the use of two serial anamorphic prisms; (3) cylindrical micro lenses structure and (4) the usage of a single mode optical fiber. In this paper, we design a combination of two sequential cylindrical lenses to reshape a non-ideal beam shape (ellipse) generated from 450-nm laser diode to be more ideal round beam shape, which reduces the divergence angle of the fast axis. Based on the technical experience and consideration the uses of two cylindrical lenses are the most common, low cost and simple method. We analyze the quality of the beam profile by observing the laser-diode burned footprint on the material object. The round beam shape is the best shape and appropriate for engraving process. Moreover, in order to obtain a perfect engraving result, we are also conducting and reporting the burning time and laser intensity characterization.
{"title":"450nm Laser diode beam shaping in engraving process","authors":"Lin Prasetyani, P. Priambodo","doi":"10.1109/QIR.2017.8168464","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168464","url":null,"abstract":"Laser applications in manufacturing processes such as cutting, welding, and engraving processes are become more popular nowadays. High-power and pulsed lasers such as CO2 and Nd:YAG gas lasers are commonly used in applications of metal cutting and welding. Meanwhile, for engraving process laser diode is more preferred due to its properties of compact shape, easy to operate, low power and high efficiency in comparison to CO2 and Nd:YAG laser gas. Owing to the rectangle resonator, the diode laser beam has some inevitable property disadvantages, such as wide-angle divergence, astigmatism and beam profile which has non-ideal elliptical beam shape. These deficiencies lead to a poor quality of beam profile. In order to obtain a high-quality engraving process, two things have to be considered. The first one is a significant requirement of a good beam quality, which is ideally a round beam shape and the second is characterization of burning time and laser intensity for each specific material object. The beam profile quality can be improved by several optical process steps, which finally end up to a perfect Gaussian round beam shape profile. The beam quality improvement can be done by using several-lens structures, for instances: (1) a combination of two sequential cylindrical lenses; (2) the use of two serial anamorphic prisms; (3) cylindrical micro lenses structure and (4) the usage of a single mode optical fiber. In this paper, we design a combination of two sequential cylindrical lenses to reshape a non-ideal beam shape (ellipse) generated from 450-nm laser diode to be more ideal round beam shape, which reduces the divergence angle of the fast axis. Based on the technical experience and consideration the uses of two cylindrical lenses are the most common, low cost and simple method. We analyze the quality of the beam profile by observing the laser-diode burned footprint on the material object. The round beam shape is the best shape and appropriate for engraving process. Moreover, in order to obtain a perfect engraving result, we are also conducting and reporting the burning time and laser intensity characterization.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122396926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168494
Diah Kusumawati, M. Suryanegara, S. Ariyanti
This paper aims to calculate the Internet of Things (IoT) spectrum requirement of smart transportation supported by LTE mobile technology by taking case study of smart transportation in Jakarta. This calculation is needed due to a prediction of deficiency of 500 MHz mobile spectrum in 2020. We use the method of general LTE planning equation. The results are IoT spectrum needed by smart transportation in Jakarta by 2020 reaches 0.0140 KHz, for smart transportation equipped with a GPS sensor, and grows to 84.290 KHz in order to accommodate an additional CCTV in every bus. Spectrum requirements are increased by 2.93% in 2025.
{"title":"IoT spectrum requirement for smart transportation","authors":"Diah Kusumawati, M. Suryanegara, S. Ariyanti","doi":"10.1109/QIR.2017.8168494","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168494","url":null,"abstract":"This paper aims to calculate the Internet of Things (IoT) spectrum requirement of smart transportation supported by LTE mobile technology by taking case study of smart transportation in Jakarta. This calculation is needed due to a prediction of deficiency of 500 MHz mobile spectrum in 2020. We use the method of general LTE planning equation. The results are IoT spectrum needed by smart transportation in Jakarta by 2020 reaches 0.0140 KHz, for smart transportation equipped with a GPS sensor, and grows to 84.290 KHz in order to accommodate an additional CCTV in every bus. Spectrum requirements are increased by 2.93% in 2025.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127550876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168490
M. Susanto, R. Hutabarat, Y. Yuniati, Syaiful Alam
Femtocell is a small cell of 10–30 meters radius deployed in the existing larger cell (macrocell) forming two-tier femtocell-macrocell cellular network. However, the deployment of femtocell into the existing macrocell cellular network is facing more complex interference problems. This paper focuses on interference management using power control methods for the uplink transmission of such two-tier cellular networks. Types of interferences considered in this paper are co-tier (femtocell-to-femtocell and macrocell-to-macrocell), cross-tier (femtocell-to-macrocell and macrocell-to-femtocell), and total interferences. This paper considers multi-cell scenario of cellular communication network consisting of three macrocell cellular networks in which each macrocell is deployed 10 femtocells. This paper analyzes one of three macrocells on the uplink transmission with the other two macrocells on downlink transmissions. All femtocells are on the same transmission conditions as its co-located macrocells. This paper observes one of ten uplink femtocells on the observed uplink macrocell. Through simulation, this paper firstly analyzes co-tier, cross-tier, and total interferences for the system without power control. The results of Signal to Interference plus Noise Ratio (SINR) in term of its Cumulative Distribution Function (CDF) for the system without power control are used as a baseline system. Then, this paper proposes the use of two power controls namely PC-1 and PC-2 in this paper which both power controls work based on the estimated current SINR. Both power control methods are also to make sure that the transmitting power of the users in the observed base stations (eNB/HeNB in 4G cellular network terminology) will not exceed maximum or minimum of its allowed transmitting power (uplink transmission case). The simulation has been carried out and the SINR results were collected and compared to baseline system. The simulation results show that PC-1 and PC-2 outperform the baseline system in terms of CDF of SINR.
{"title":"Interference Management using power control for uplink transmission in femtocell-macrocell cellular communication network","authors":"M. Susanto, R. Hutabarat, Y. Yuniati, Syaiful Alam","doi":"10.1109/QIR.2017.8168490","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168490","url":null,"abstract":"Femtocell is a small cell of 10–30 meters radius deployed in the existing larger cell (macrocell) forming two-tier femtocell-macrocell cellular network. However, the deployment of femtocell into the existing macrocell cellular network is facing more complex interference problems. This paper focuses on interference management using power control methods for the uplink transmission of such two-tier cellular networks. Types of interferences considered in this paper are co-tier (femtocell-to-femtocell and macrocell-to-macrocell), cross-tier (femtocell-to-macrocell and macrocell-to-femtocell), and total interferences. This paper considers multi-cell scenario of cellular communication network consisting of three macrocell cellular networks in which each macrocell is deployed 10 femtocells. This paper analyzes one of three macrocells on the uplink transmission with the other two macrocells on downlink transmissions. All femtocells are on the same transmission conditions as its co-located macrocells. This paper observes one of ten uplink femtocells on the observed uplink macrocell. Through simulation, this paper firstly analyzes co-tier, cross-tier, and total interferences for the system without power control. The results of Signal to Interference plus Noise Ratio (SINR) in term of its Cumulative Distribution Function (CDF) for the system without power control are used as a baseline system. Then, this paper proposes the use of two power controls namely PC-1 and PC-2 in this paper which both power controls work based on the estimated current SINR. Both power control methods are also to make sure that the transmitting power of the users in the observed base stations (eNB/HeNB in 4G cellular network terminology) will not exceed maximum or minimum of its allowed transmitting power (uplink transmission case). The simulation has been carried out and the SINR results were collected and compared to baseline system. The simulation results show that PC-1 and PC-2 outperform the baseline system in terms of CDF of SINR.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125751422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168441
K. Ramli, Rudy Nurhadi, Y. Suryanto, Alfan Presekal
Iris recognition offers unique pattern as a biometric authentication. Iris has advantages in term of universality, distinctiveness, permanence, and collectability. This research proposed implementation of half polar iris localization and normalization to improve performance of iris recognition that is detected using modified low cost camera. In the development phase dataset from CASIA-IrisV1 is used. The performance of the recognition is then evaluated based on level of accuracy and execution time. Our proposed method produces better accuracy for Iris Localization, and hence suitable for Iris Recognition The processing speed analysis shows that the proposed method performs faster Iris based authentication.
{"title":"Performance analysis on iris recognition based on half polar iris localization and normalization method using modified low cost camera","authors":"K. Ramli, Rudy Nurhadi, Y. Suryanto, Alfan Presekal","doi":"10.1109/QIR.2017.8168441","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168441","url":null,"abstract":"Iris recognition offers unique pattern as a biometric authentication. Iris has advantages in term of universality, distinctiveness, permanence, and collectability. This research proposed implementation of half polar iris localization and normalization to improve performance of iris recognition that is detected using modified low cost camera. In the development phase dataset from CASIA-IrisV1 is used. The performance of the recognition is then evaluated based on level of accuracy and execution time. Our proposed method produces better accuracy for Iris Localization, and hence suitable for Iris Recognition The processing speed analysis shows that the proposed method performs faster Iris based authentication.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116004106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168449
Asri Yulianti, S. Sumpeno, M. Purnomo
In the government agencies, civil servants are required to have competence or ability to finish the work effectively and efficiently. In fact, the decision-making system for determining position and assignment of civil servants' functional works is still performed manually, so it takes a longer time. Moreover, the results are not totally accurate in terms of their competency. Rough set, hereinafter called Single Rough Set, is a common method to solve this problem, but the process may be very complex and still has the unclassified result. In this research, Multi Rough Set and Majority Vote technique are proposed to enhance system performance of single rough set with multi attributes of job competency. It obtains accuracy rate with 5-fold cross-validation that is 83.67% better than a Single Rough Set and it has 0.947 Area Under Curve (AUC) derived from Receiver Operator Characteristic (ROC). Thus, it can be said that the system performance of Multi Rough Set can be considered excellent in classifying job competency for civil servants' functional works.
{"title":"Majority vote technique based on multi rough set for multi attributes decision-making system: Case study classifying job competency for civil servants' functional works in ministry of religious affairs of Republic of Indonesia","authors":"Asri Yulianti, S. Sumpeno, M. Purnomo","doi":"10.1109/QIR.2017.8168449","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168449","url":null,"abstract":"In the government agencies, civil servants are required to have competence or ability to finish the work effectively and efficiently. In fact, the decision-making system for determining position and assignment of civil servants' functional works is still performed manually, so it takes a longer time. Moreover, the results are not totally accurate in terms of their competency. Rough set, hereinafter called Single Rough Set, is a common method to solve this problem, but the process may be very complex and still has the unclassified result. In this research, Multi Rough Set and Majority Vote technique are proposed to enhance system performance of single rough set with multi attributes of job competency. It obtains accuracy rate with 5-fold cross-validation that is 83.67% better than a Single Rough Set and it has 0.947 Area Under Curve (AUC) derived from Receiver Operator Characteristic (ROC). Thus, it can be said that the system performance of Multi Rough Set can be considered excellent in classifying job competency for civil servants' functional works.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115021610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168498
Muhammad Levy Aninditio, A. Rahardjo, C. Hudaya
The energy crisis in the future will be a threat for human life. Many advancements of technology currently focus on creating something that perform better than its predecessor but consuming less power. Light-emitting diode (LED) lighting technology has been introduced as a breakthrough of technology which possesses big advantages rather than other lighting technologies. LED lighting technology is able to produce a high luminous flux with very low power consumption, and also lasts longer than others. By consuming lower power, hence the amount of energy being consumed in order to generate the same amount of light will be reduced, and hence, energy saving will happen. This study discusses the replacement analysis of lighting at classrooms at Engineering Center of Faculty of Engineering Universitas Indonesia. The analysis is in terms of illuminance aspect, power quality performance and cost, and it is done by replacing the existing compact fluorescence lamps (CFL) with three different options of LED lamp exist in the market with competitive price. The study suggests that using LED lamp as a replacement for CFL at classrooms at designated room is more efficient; consuming less energy by 42.86%, and moreover saving the electricity cost as well, from IDR 864,360 annually to IDR 493,920.
{"title":"Lighting replacement analysis at classrooms of engineering center, faculty of engineering, universitas Indonesia","authors":"Muhammad Levy Aninditio, A. Rahardjo, C. Hudaya","doi":"10.1109/QIR.2017.8168498","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168498","url":null,"abstract":"The energy crisis in the future will be a threat for human life. Many advancements of technology currently focus on creating something that perform better than its predecessor but consuming less power. Light-emitting diode (LED) lighting technology has been introduced as a breakthrough of technology which possesses big advantages rather than other lighting technologies. LED lighting technology is able to produce a high luminous flux with very low power consumption, and also lasts longer than others. By consuming lower power, hence the amount of energy being consumed in order to generate the same amount of light will be reduced, and hence, energy saving will happen. This study discusses the replacement analysis of lighting at classrooms at Engineering Center of Faculty of Engineering Universitas Indonesia. The analysis is in terms of illuminance aspect, power quality performance and cost, and it is done by replacing the existing compact fluorescence lamps (CFL) with three different options of LED lamp exist in the market with competitive price. The study suggests that using LED lamp as a replacement for CFL at classrooms at designated room is more efficient; consuming less energy by 42.86%, and moreover saving the electricity cost as well, from IDR 864,360 annually to IDR 493,920.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"14 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120836997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168531
Andreyanto Pratama, Taufik Hidyatullah, D. Putranto
Security for accessing an area need to be noticed. Access restriction can be applied using authentication such as password. Thereby, the strong password is required, but it is hard to remember. Strong password can be generated by using hash function and stored on smart card can be solution. Smart card can be used as access card. Nevertheless, vulnerabilities of the card need to be noticed. Lamport's scheme as hash sequence authentication can be implemented to create dynamic access card which replicate resistant. Hash sequence authentication used to authenticate the prover. The prover should give hash value as input that has result equal with the verifier has. This scheme will be implemented using Arduino Mega ADK. The result of this research is a login hardware prototype.
进入一个区域的安全需要注意。可以使用身份验证(如密码)应用访问限制。因此，强密码是必需的，但它很难记住。使用哈希函数生成强密码并存储在智能卡上即可解决。智能卡可以作为门禁卡使用。然而，卡的漏洞需要注意。Lamport方案作为哈希序列认证可以实现创建抗复制的动态门禁卡。用于验证证明者的哈希序列身份验证。证明者应该给出与验证者结果相等的哈希值作为输入。本方案将使用Arduino Mega ADK实现。本研究的结果是一个登录硬件原型。
{"title":"Efficient implementation of hash sequence authentication based on RFID","authors":"Andreyanto Pratama, Taufik Hidyatullah, D. Putranto","doi":"10.1109/QIR.2017.8168531","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168531","url":null,"abstract":"Security for accessing an area need to be noticed. Access restriction can be applied using authentication such as password. Thereby, the strong password is required, but it is hard to remember. Strong password can be generated by using hash function and stored on smart card can be solution. Smart card can be used as access card. Nevertheless, vulnerabilities of the card need to be noticed. Lamport's scheme as hash sequence authentication can be implemented to create dynamic access card which replicate resistant. Hash sequence authentication used to authenticate the prover. The prover should give hash value as input that has result equal with the verifier has. This scheme will be implemented using Arduino Mega ADK. The result of this research is a login hardware prototype.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124556043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-01DOI: 10.1109/QIR.2017.8168476
E. Yudaningtyas, D. Santjojo, Waru Djuriatno, I. Siradjuddin, M. R. Hidayatullah
Mortality due to chronic kidney disease (CKD) increases significantly in a recent year. The disease often is diagnosed in an advanced stage. On the other hand, there has been traditional Chinese method or technique to diagnose the presence of the CKD. The diagnosis is carried out by examining pulse palpation at three points namely cun, guan and chi located at the radial artery of the left hand. Records of the pulse pattern of the CKD patients showed irregular characteristics compared with regular pattern obtained from healthy subjects. The aim of this study was to determine the relationship between the frequency spectrum of the irregular pulses related to the stages of the CKD especially from the chi area. Data of the irregular pulse were categorized into 6 stages i.e. 1, 2, 3a, 3b, 4, and 5 of the CKD patients. The data were collected by measuring pressure during systolic periods or when blood vessels were in a relaxed state. In this period, the instrumentation records reflections of the pulse including information about the amplitudes, frequencies, and pulse wave patterns. Observations were focused on the part of the signal between low and high amplitude on pulse patterns (systolic period). The irregular patterns were processed by a Fast Fourier Transform (FFT) technique to find out their special characteristics quantitatively. Results showed that the pattern irregularity was related to the severity of the kidney dysfunction. The FFT processing results showed a number of different special characters in the spectrum. The data were clustered related to the CKD stages. The clustered data of the CKD patients indicates a correlation between the stages and the shifting of the spectrum to lower frequencies which are 0.26 Hz compared to health subject's data 1.11 Hz.
{"title":"Identification of pulse frequency spectrum of chronic kidney disease patients measured at TCM points using FFT processing","authors":"E. Yudaningtyas, D. Santjojo, Waru Djuriatno, I. Siradjuddin, M. R. Hidayatullah","doi":"10.1109/QIR.2017.8168476","DOIUrl":"https://doi.org/10.1109/QIR.2017.8168476","url":null,"abstract":"Mortality due to chronic kidney disease (CKD) increases significantly in a recent year. The disease often is diagnosed in an advanced stage. On the other hand, there has been traditional Chinese method or technique to diagnose the presence of the CKD. The diagnosis is carried out by examining pulse palpation at three points namely cun, guan and chi located at the radial artery of the left hand. Records of the pulse pattern of the CKD patients showed irregular characteristics compared with regular pattern obtained from healthy subjects. The aim of this study was to determine the relationship between the frequency spectrum of the irregular pulses related to the stages of the CKD especially from the chi area. Data of the irregular pulse were categorized into 6 stages i.e. 1, 2, 3a, 3b, 4, and 5 of the CKD patients. The data were collected by measuring pressure during systolic periods or when blood vessels were in a relaxed state. In this period, the instrumentation records reflections of the pulse including information about the amplitudes, frequencies, and pulse wave patterns. Observations were focused on the part of the signal between low and high amplitude on pulse patterns (systolic period). The irregular patterns were processed by a Fast Fourier Transform (FFT) technique to find out their special characteristics quantitatively. Results showed that the pattern irregularity was related to the severity of the kidney dysfunction. The FFT processing results showed a number of different special characters in the spectrum. The data were clustered related to the CKD stages. The clustered data of the CKD patients indicates a correlation between the stages and the shifting of the spectrum to lower frequencies which are 0.26 Hz compared to health subject's data 1.11 Hz.","PeriodicalId":225743,"journal":{"name":"2017 15th International Conference on Quality in Research (QiR) : International Symposium on Electrical and Computer Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133653774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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