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An IoT-Based Aquaculture Monitoring System Using Firebase

Computers, Materials & Continua 2023年第8期76卷 2179-2200页

作者： Wen-Tsai Sung Indra Griha Tofik Isa Sung-Jung Hsiao department of Electrical engineering National Chin-Yi University of TechnologyTaichung411030Taiwan department of Informatics management Politeknik Negeri SriwijayaPalembang30139Indonesia department of Information technology Takming University of Science and TechnologyTaipei City11451Taiwan

Indonesia is a producer in the fisheries sector,with production reaching 14.8 million tons in *** production potential of the fisheries sector can be optimally optimized through aquaculture *** of the most important issues in aquaculture management is how to efficiently control the fish pond water *** technology can be applied to support a fish pond aquaculture monitoring system,especially for catfish species(Siluriformes),in real-time and *** of the technologies that can provide this convenience is the *** problem of this study is how to integrate IoT devices with Firebase’s cloud data system to provide reliable and precise data,which makes it easy for fish cultivators to monitor fishpond conditions in real time and *** IoT aquaculture fishpond monitoring use 3 parameters:(1)water temperature;(2)pHwater level;and(3)turbidity level of pond *** devices use temperature sensors,pH sensors,and turbidity sensors,which are integrated with a microcontroller and Wi-Fi *** from sensor readings are sent to the Firebase cloud via theWi-Fi module so that it can be accessed in real time by end users with an Androidbased mobile *** findings are(1)the IoT-based aquaculture monitoring system device has a low error rate in measuring temprature,pH,and turbidity with a percentage of 1.75%,1.94% and 9.78%,***,the total average error of the three components is 4.49%;(2)in cost analysis,IoT-based has a cost-effectiveness of 94.21% compared to labor *** IoT-based aquaculture monitoring system using Firebase can be effectively used as a technology for monitoring fish pond conditions in real-time and remotely for fish cultivators that contribute to providing an IoT-based aquaculture monitoring system that produces valid data,is precise,is easy to implement,and is a low-cost system.

关键词： Internet of Things aquaculture technology water monitoring system real-time database aquaculture monitoring system

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Two Processes Comparison by Using Capability Indices C_(pm)

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厦门大学学报（自然科学版） 2002年第S1期41卷 188-189页

作者： K S Chen Jann-Pygn Chen T W Chen department of industrial engineering & management National Chin -Yi Institute of TechnologyDepartment of Industrial Engineering & ManagementNational Chin -Yi Institute of TechnologyDepartment of Mechanical Engineering National Chin-Yi Institute of Technology Taiwan China

In recent years, there has been mounting interest i n measuring process performance in manufacturing industry. Based on analyzing the process capability indices, a production department can trace and improve a poor process to enhance quality levels and satisfy customers. The process capabilit y analysis can also serve as an important reference for making decisions for imp roving the global quality of all products. Since C p and C pk are failed to account for process centering, the index C pm is developed. The index C pm takes the process centering into consideration and is su itable for the processes with nominal-the-best type. There are other indices l ike C pu and C pl, and those indices are used for unilateral s pecification processes. Chou (1994) developed a procedure using estimators of C p, C pu and C pl for practitioners to determine whether two p rocesses are equal capability or not. For bilateral specifications processes, i ndex C p is failed to measure process yield and process centering. Thus, th e index C pm is used to develop a similar procedure for practitioners t o determine whether two processes are equal capability or not. The decisions mad e using the procedure to select the better supplier are, of course, more reliabl e.

关键词： process capability indices test statistic proce ss yield process centering

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Optimal Energy Reserve Scheduling in Integrated Electricity and Gas Systems Considering Reliability Requirements

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Journal of Modern Power Systems and Clean Energy 2022年第6期10卷 1494-1506页

作者： Hengyu Hui Minglei Bao yi Ding Yang Yang Yusheng Xue the College of Electrical engineering Zhejiang UniversityHangzhouChina the department of industrial Systems engineering and management National University of SingaporeSingapore State Grid Electric Power Research Institute NanjingChina

With the growing interdependence between the electricity system and the natural gas system,the operation uncertainties in either subsystem,such as wind fluctuations or component failures,could have a magnified impact on the reliability of the whole system due to energy interactions.A joint reserve scheduling model considering the cross-sectorial impacts of operation uncertainties is essential but still insufficient to guarantee the reliable operation of the integrated electricity and natural gas system(IEGS).Therefore,this paper proposes a day-ahead security-constrained unit commitment(SCUC)model for the IEGS to schedule the operation and reserve simultaneously considering reliability ***,the multi-state models for generating units and gas wells are *** on the multi-state models,the expected unserved energy cost(EUEC)and the expected wind curtailment cost(EWC)criteria are proposed based on probabilistic methods considering wind fluctuation and random failures of components in ***,the EUEC and EWC criteria are incorporated into the day-ahead SCUC model,which is nonconvex and mathematically reformulated into a solvable mixed-integer second-order cone programming(MISOCP)*** proposed model is validated using an IEEE 30-bus system and Belgium 20-node natural gas *** results demonstrate that the proposed model can effectively schedule the energy reserve to guarantee the reliable operation of the IEGS considering the multiple uncertainties in different subsystems and the cross-sectorial failure propagation.

关键词： Integrated electricity and natural gas system(IEGS) natural gas reserve electric reserve expected unserved energy cost expected wind curtailment multi-state model operational reliability

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Reliable evaluation method of quality control for compressive strength of concrete

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Journal of Zhejiang university-Science A(Applied Physics & engineering) 2005年第8期6卷 836-843页

作者： CHEN Kuen-suan SUNG Wen-pei SHIH Ming-hsiang department of lndustrial engineering and management National Chin-Yi Institute of Technologv Taiping Taichung Taiwan 41111 China department of Landscape Design and management National Chin-Yi Institute of Technologv Taiping Taichung Taiwan 41111 China department of Construction engineering National Kaoshiang First University of Science and Technology Kaoshiang Taiwan 824 China

Concrete in reinforced concrete structure (RC) is generally under significant compressive stress load. To guarantee required quality and ductility, various tests have to be conducted to measure the concrete’s compressive strength based on ACI (American Concrete Institute) code. Investigations of recent devastating collapses of structures around the world showed that some of the collapses directly resulted from the poor quality of the concrete. The lesson learned from these tragedies is that guaranteeing high quality of concrete is one of the most important factors ensuring the safety of the reinforced concrete structure. In order to ensure high quality of concrete, a new method for analyzing and evaluating the concrete production process is called for. In this paper, the indices of fit and stable degree are proposed as basis to evaluate the fitness and stability of concrete’s compressive strength. These two indices are combined to define and evaluate the quality index of the compressive strength of concrete. Prin-ciples of statistics are used to derive the best estimators of these indices. Based on the outcome of the study, a concrete compres-sive strength quality control chart is proposed as a tool to help the evaluation process. Finally, a new evaluation procedure to assess the quality control capability of the individual concrete manufacturer is also proposed.

关键词：混凝土质量控制评估标准可靠性分析应力分析

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Finite element modeling for analysis of cracked cylindrical pipes

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Journal of Zhejiang university-Science A(Applied Physics & engineering) 2007年第9期8卷 1373-1379页

作者： SUNG Wen-pei GO Cheer-germ SHIH Ming-hsiang department of Landscape Design and management National Chin-Yi University of TechnologyTaipingTaichung 41111TaiwanChina department of Civil engineering National Chung Hsing UniversityTaichung 40227TaiwanChina department of Construction engineering National Kaohsiung First University of Science and TechnologyKaohsiung 811TaiwanChina

The characteristic properties of shell element with similar shapes are used to generate a so-called super element for the analysis of the crack problems for cylindrical pressure vessels. The formulation is processed by matrix condensation without the involvement of special treatment. This method can deal with various singularity problems and it also presents excellent results to crack problems for cylindrical shell. Especially,the knowledge of the kind of singular order is not necessary in super element generation; it is very economical in terms of computer memory and programming. This method also exhibits versatility to solve the problem of kinked crack at cylindrical shell.

关键词：压力容器裂纹扩展有限元建模圆柱形管

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PREDECESSOR-SET TECHNIQUE FOR RELIABILITY EVALUATION OF A STOCHASTIC MANUFACTURING SYSTEM

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Journal of Systems Science and Systems engineering 2015年第2期24卷 190-210页

作者： yi-Kuei Lin Ping-Chen Chang department of industrial management National Taiwan University of Science & Technology

This paper studies the reliability evaluation of a stochastic manufacturing system with multiple production lines in parallel. Multiple repairs and different failure rates, never simultaneously addressed in earlier works, are taken into account. First, a revised graphical methodology integrating transformation and decomposition is utilized to construct the stochastic manufacturing system as a multi-state manufacturing network （MSMN）. In particular, a ＂predecessor-set＂ technique is proposed to deal with multiple repairs. An algorithm is proposed to generate the lowest capacity vectors （LCVs） that stations should provide to satisfy the workloads. Subsequently, the system reliability of the MSMN, which is defined as the probability of demand satisfaction, is calculated in terms of the LCVs. A real case of a printed circuit board manufacturing system is utilized to demonstrate how the system reliability can be evaluated. A further decision making issue is addressed based on the derived system reliability.

关键词： Multi-state manufacturing network (MSMN) predecessor-set lowest capacity vector(LCV) different failure rates multiple repairs system reliability

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SYSTEM RELIABILITY OF ASSURED ACCURACY RATE FOR MULTI-STATE COMPUTER NETWORKS FROM SERVICE LEVEL AGREEMENTS VIEWPOINT

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Journal of Systems Science and Systems engineering 2014年第2期23卷 196-211页

作者： yi-Kuei Lin Cheng Fu Huang department of industrial management National Taiwan University of Science & Technology

From the viewpoint of service level agreements, the transmission accuracy rate is one of critical performance indicators to assess internet quality for system managers and customers. Under the assumption that each arc＇s capacity is deterministic, the quickest path problem is to find a path sending a specific of data such that the transmission time is minimized. However, in many real-life networks such as computer networks, each arc has stochastic capacity, lead time and accuracy rate. Such a network is named a multi-state computer network. Under both assured accuracy rate and time constraints, we extend the quickest path problem to compute the probability that d units of data can be sent through multiple minimal paths simultaneously. Such a probability named system reliability is a performance indicator to provide to managers for understanding the ability of system and improvement. An efficient algorithm is proposed to evaluate the system reliability in terms of the approach of minimal paths.

关键词： Assured accuracy rate service level agreement (SLA) transmission time multi-state computer network (MSCN) system reliability

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CLUSTERING PATENTS USING NON-EXHAUSTIVE OVERLAPS

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Journal of Systems Science and Systems engineering 2010年第2期19卷 162-181页

作者： Charles V. TRAPPEY Amy J.C. TRAPPEY Chun-yi WU department of management Science National Chiao Tung University Taiwan China department of industrial engineering & management National Taipei University of Technology Taiwan China department of lndustrial engineering & engineering management National Tsing Hua University Taiwan China

Patent documents are unique external sources of information that reveal the core technology underlying new inventions. Patents also serve as a strategic data source that can be mined to discover state-of-the-art technical development and subsequently help guide R＆D investments. This research incorporates an ontology schema to extract and represent patent concepts. A clustering algorithm with non-exhaustive overlaps is proposed to overcome deficiencies with exhaustive clustering methods used in patent mining and technology discovery. The non-exhaustive clustering approach allows for the clustering of patent documents with overlapping technical findings and claims, a feature that enables the grouping of patents that define related key innovations. Legal advisors can use this approach to study potential cases of patent infringement or devise strategies to avoid litigation. The case study demonstrates the use of non-exhaustive overlaps algorithm by clustering US and Japan radio frequency identification （RFID） patents and by analyzing the legal implications of automated discovery of patent infringement.

关键词： Data mining patent analysis patent infringement non-exhaustive overlap clustering ontology schema

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GRAPHICAL-BASED RELIABILITY EVALUATION OF MULTIPLE DISTINCT PRODUCTION LINES

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Journal of Systems Science and Systems engineering 2013年第1期22卷 73-92页

作者： yi-Kuei LIN Ping-Chen CHANG department of industrial management National Taiwan University of Science & Technology

This paper proposes a graphical-based methodology to evaluate the performance of a manufacturing system in terms of network *** focus on a manufacturing system which consists of multiple distinct production lines.A transformation technique is developed to build the manufacturing system as a manufacturing *** such a manufacturing network,the capacity of each machine is multistate due to failure,partial failure,or ***,this manufacturing network is also regarded as a multistate *** evaluate the probability that the manufacturing network can meet a given demand,where the probability is referred to as the system reliability.A simple algorithm integrating decomposition technique is proposed to generate the minimal capacity vectors that machines should provide to eventually satisfy *** system reliability is derived in terms of such capacity vectors afterwards.A practical application in the context of IC card manufacturing system is utilized to demonstrate the performance evaluation procedure.

关键词： Graphical-based methodology transformation decomposition multiple distinct production lines system reliability

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Sharing Economy in Local Energy Markets

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Journal of Modern Power Systems and Clean Energy 2023年第3期11卷 714-726页

作者： Zhaoyuan Wu Jianxiao Wang Haiwang Zhong Feng Gao Tianjiao Pu chin-Woo Tan Xiupeng Chen Gengyin Li Huiru Zhao Ming Zhou Qing Xia School of Economics and management North China Electric Power UniversityBeijing 102206China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China national engineering Laboratory for Big Data Analysis and Applications Peking UniversityBeijing 100871China State Key Lab of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China department of industrial engineering and management College of EngineeringPeking UniversityBeijing 100871China china Electric Power Research Institute Beijing 100192China department of Civil and Environmental engineering Stanford UniversityPalo AltoCA 94305USA engineering and technology Institute Groningen University of Groningen9742 AG Groningenthe Netherlands

With an increase in the electrification of end-use sectors,various resources on the demand side provide great flexibility potential for system operation,which also leads to problems such as the strong randomness of power consumption behavior,the low utilization rate of flexible resources,and difficulties in cost *** the core idea of“access over ownership”,the concept of the sharing economy has gained substantial popularity in the local energy market in recent ***,we provide an overview of the potential market design for the sharing economy in local energy markets(LEMs)and conduct a detailed review of research related to local energy sharing,enabling technologies,and potential *** paper can provide a useful reference and insights for the activation of demand-side flexibility ***,this paper can also provide novel insights into the development and further integration of the sharing economy in LEMs.

关键词： Energy sharing flexibility potential local energy market information and communication technology sharing economy

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