• 약학회지
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• 제51권3호
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• pp.206-213
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• 2007

Recently estimating the uncertainty of an analytical result has become an essential part of quantitative analysis. This study describes the uncertainty of the measurement for the determination of methamphetamine and its major metabolite amphetamine in human hair, The method consists of washing, drying, weighing, incubation and extraction with methanolic HCI solution, clean-up, trifluoroacetyl derivatization, and qualification/quantification of residues by gas chromatography/mass spectrometry (GC/MS). Traceability of measurement was established through traceable standards and calibrated volumetric equipment and measuring instruments. Measurement uncertainty associated with each analyte in real samples was estimated using quality control (QC) data. The main source of combined standard uncertainty comprised two components, which are uncertainties associated with calibration linearity and variations in QC, while those associated with preparation of analytical standards and sample weighing were not so important considering the degree of contribution. Relative combined standard uncertainties associated with the described method ranged for individual analytes from 4.99 to5.03%.

• 수산경영론집
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• 제46권3호
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• pp.51-61
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• 2015

The purpose of this study is to find food safety approach in the Eco-label Chain of Custody(CoC) which is only focused to traceability. Because, consumers want to be assured the certified seafood comes from sustainable fishery as well as hygienic. In order to this approach, we used Analytic Hierarchy Process(AHP) method as belows. We first understood the CoC criteria for using pair-wise comparison and analyzed and selected each Eco-label certifications and standards. Second, we carried out a survey to the targeted standard Marine Stewardship Council(MSC) CoC auditors all over the world and analyzed the priorities of food safety approach to 4 principles and 12 criteria belong the MSC CoC Standard. As the results, we found out that 'Management System' has the highest priority in the principles and 'Documentation' and 'Keeping Record' are the most important criteria for this approach. In addition, 'Training' and 'Identification' are also higher priority of criteria. So, we suggested food safety approach method for improvement of these criteria in conclusion based on discussion with specialist in this field.

• The Journal of Asian Finance, Economics and Business
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• 제8권9호
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• pp.333-340
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• 2021

In Vietnam, the desire to consume organic vegetables is increasing as people become increasingly concerned about foods that contain several chemicals and toxins that are hazardous to their health. However, numerous subjective and objective factors continue to influence customers' purchase intention and behavior, indicating that this market has not yet reached its full potential. The study analyzes the impacts of trust, price, and convenience on consumers' consumption behavior and frequency of using organic vegetables in Northern Vietnam. We surveyed 312 consumers in the region. After classifying the data, 178 participants have used or regularly used organic vegetables selected for further study. Next, the author applied SmartPLS software with version 3.3 to test the hypotheses and analyze the effects of the observations. The result shows that three main factors affect customers' organic vegetable consumption behavior, especially perceived convenience. This study contributes to the development of comprehensive policy mechanisms and regulations on product traceability. Furthermore, market management authorities must have a strategy in place to inspect the product quality of organic vegetable store chains regularly to build customer trust and support the growth of organic vegetable production and supply chains in Vietnam's northern region.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권2호
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• pp.587-608
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• 2022

The European Union recently established the General Data Protection Regulation (GDPR) for secure data use and personal information protection. Inspired by this, South Korea revised their Personal Information Protection Act, the Act on Promotion of Information and Communications Network Utilization and Information Protection, and the Credit Information Use and Protection Act, collectively known as the "Three Data Bills," which prescribe safe personal information use based on pseudonymous data processing. Based on these bills, the personal data store (PDS) has received attention because it utilizes the MyData service, which actively manages and controls personal information based on the approval of individuals, and it practically ensures their rights to informational self-determination. Various types of PDS models have been developed by several countries (e.g., the US, Europe, and Japan) and global platform firms. The South Korean government has now initiated MyData service projects for personal information use in the financial field, focusing on personal credit information management. There is also a need to verify the efficacy of this service in diverse fields (e.g., medical). However, despite the increased attention, existing MyData models and frameworks do not satisfy security requirements of ensured traceability, transparency, and distributed authentication for personal information use. This study analyzes primary PDS models and compares them to an internationally standardized framework for personal information security with guidelines on MyData so that a proper PDS model can be proposed for South Korea.

• 대한안전경영과학회지
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• 제15권4호
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• pp.161-169
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• 2013

Due to the recent advances in technology, the systems are becoming more demanding in terms of functionality and implementation complexity. Therefore, when system failures are involved in such complex systems, the effects of the related safety issues can also be more serious, thereby causing in the worst case irrecoverable hazards on both human being and properties. This fact can be witnessed in the recent rail systems accidents. In general, the accidents can be attributed to the systematic failure or the random failure. The latter is due to the aging or unsatisfied quality of the parts used in implementation or some unexpected external cause that would otherwise result in accidents whereas the former is usually related to incomplete systems design. As the systems are becoming more complex, so are the systematic failures. The objective of the paper is to study an approach to solving the systematic failure. To do so, at first the system design process is augmented by the functional safety activities that are suggested in the standard IEC 61508. Analyzing the artifacts of the integrated process yields the traceability, which satisfies the requirements for reduction of systematic failure as provided in ISO 26262. In order to reduce systematic failure, the results are utilized in the conceptual design stage of systems development in which systems requirements are generated and functional architecture is developed.

• 한국컴퓨터정보학회논문지
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• 제18권7호
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• pp.57-67
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• 2013

본 연구는 운용성 향상을 위하여 효율적이고, 체계적인 인적 요소 분석 방법을 제안한다. 시스템 개발의 출발점인 사용자의 요구사항 생성 및 관리, 설계반영에 중점을 두고 이를 활용할 수 있는 방법론을 제시함으로써 운용성 향상을 구현하기 위함이다. 이러한 목적을 달성하기 위하여 본 연구에서는 사례연구로 인에이블링 시스템 운용환경 설계를 위한 인적 요소 요구사항 아키텍처방법을 제시하고, 이를 기반으로 하여 인에이블링 시스템 인적요소 데이터베이스를 분석하고 구축하는 작업을 수행하였다. 최근 들어, 인에블링 시스템에 관한 인적 요소분석 및 설계반영의 필요성이 증대되고 있다. 인간공학 표준 및 가이드에서 제시하는 방법들을 정리하고, 분석하여 인에이블링 시스템 운용환경설계 검토를 수행하였다. 본 연구의 인에이블링 시스템 운용 환경 설계를 위한 인적요소 분석방법론을 통하여 체계 데이터베이스를 구축하고, 다양한 분야의 체계 개발에 활용될 수 있을 것으로 기대한다.

• 한국산학기술학회논문지
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• 제21권10호
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• pp.159-165
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• 2020

식품에 대한 안전성 요구는 사회가 선진화되고 식품산업의 발달과 함께 식생활 양식 변화와 소비자의 인식변화로 인해 사회적 문제로 크게 대두되었다. 소비자들은 자신이 소비하는 식품에 대하여 더 많은 정보를 요구하고 있으며, 유통체계에서 발생하는 식품 스캔들에 민감하게 반응한다. 이와 같은 식품안전에 대한 관심 속에 블록체인 기술은 식품사기나 유통 중의 잘못된 식품 관리에 효과적으로 대응하는 수단으로서 주목을 받고 있다. 이는 식품의 공급망에서 이력추적의 정확성과 믿음을 담보함으로써 거래자 간 신뢰를 구축하고 안전한 식품 유통을 보장할 수 있기 때문이다. 본 연구에서는 농식품의 이력, 유통, 안전, 품질과 신선도 등 농식품이 갖고 있는 각종 정보를 공급자와 소비자 및 유통관계자에게 제공하고 관리할 수 있는 차세대 농식품 유통시스템을 제안한다. 생산, 가공, 유통, 판매, 소비 전 과정에서의 제품 상태 및 유통 상황 정보를 언제 어디서나 실시간으로 모니터링하고 제어할 수 있으며, 사용자는 사용자가 앱(App)을 통하여 각 식품의 안전 수준을 실시간으로 확인할 수 있다.

• 디지털산업정보학회논문지
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• 제12권1호
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• pp.1-12
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• 2016

The current economic crisis is making new demands on manufacturing industry, in particular, in terms of the flexibility and efficiency of production processes. This requires production and administrative processes to be meshed with each other by means of IT systems to optimise the use and capacity utilisation of machines and lines but also to be able to respond rapidly to wrong developments in production and thus to minimise adverse impacts on the business. The future scenario of the "smart factory" represents the zenith of this development. The factory can be modified and expanded at will, combines all components from different manufacturers and enables them to take on context-related tasks autonomously. Integrated user interfaces will still be required at most for basic functionalities. The complex control operations will run wirelessly and ad hoc via mobile terminals such as PDAs or smartphones. The comnination of IoT, and Big Data optimisation is bringing about huge opportunities. these processes are not just limited to manufacturing, anywhere a supply chain environment exists can benefit from information provided by linked devices and access to big data to inform their decision support. Building a smart factory with smart assets at its core means reaching those desired new levels of productivity and efficiency. It means smart products that leverage advanced traceability, connectivity and intelligence. For businesses, it means being able to address the talent crunch through more autonomous. In a Smart Factory, machinery and equipment will have the ability to improve processes through self-optimization and autonomous decision-making.

• 약학회지
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• 제52권6호
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• pp.480-487
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• 2008

We described an estimation of measurement uncertainty in quantitative analysis of 11-nor-9-carboxy-${\Delta}^9$-tetrahydrocannabinol (THCCOOH), the major metabolite of ${\Delta}^9$-tetrahydrocannabinol, in urine sample by solid-phase extraction (SPE) and GC/MS detection. The analytical results were compared and the different contributions to the uncertainty were evaluated. Inter-day and inter-person validation were performed using statistical analysis of several indicative factors. Measurement uncertainty associated with target analyte in real forensic samples was estimated using quality control (QC) data. Traceability of measurement was established through traceable standards, calibrated volumetric glassware and volume measuring device. The major factors of contribution to combined standard uncertainty, were calibration linearity, inter-day repeatability and inter-person reproducibility, while those associated with preparation of analytical standards and sampling volume were not so important considering the degree of contribution. Relative combined standard uncertainties associated with the described method was 12.05% for THCCOOH.

• 한국전자거래학회지
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• 제15권1호
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• pp.89-101
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• 2010

치열한 글로벌 경쟁에서 기업의 경쟁력이 제품 측면에서 점차 서비스 측면으로 옮겨가고 있다. 이는 치열한 경쟁 상황 등으로 인해 제품 생산 비용이나 제품의 품질에서 차별화를 확보하기 힘들어지고 수요의 불확실성과 동적인 시장 상황으로 인해 점차 유연성과 대응성 등 서비스 측면이 차별화 요인으로 대두되고 있기 때문이다. 기업의 유연성과 대응성은 기업의 판매주문처리를 통해 다른 기업들에게 평가된다. 따라서 기업은 판매주문처리에 관심을 가져야 한다. 그러나 기존의 판매주문처리 관련 연구들은 주로 생산 비용을 최소화하기 위한 납기 결정과 생산 일정 수립 및 납기 준수를 위한 리드타임 결정에 비중을 두고 있다. 이는 지금까지 판매주문처리 관련 연구들이 대상으로 하는 목적함수가 비용 관련 요소에 비중을 두고 있었으며, 유연성과 대응성 향상을 위한 고객과의 유연하면서 긴밀한 연결 비용과 실시간 주문 관련 정보 취득 비용이 높았기 때문이다. 그러나 정보 기술(IT)과 유비쿼터스 기술(UT)의 발전으로 점차 연결성과 가시성 확보와 관련한 비용이 줄었으며 기술적으로 구현 가능해지고 있다. 본 연구에서는 정보 기술과 유비쿼터스 기술의 발전으로 인해 변화된 기업의 판매주문관리에서의 유연성과 대응성 향상을 위해 납기를 재협의하는 프로세스와 이를 지원하기 위해 로제타넷 PIP(Partner Interface Process) 기반의 비즈니스 통합 모델을 제안하고자 한다.