• The Journal of Asian Finance, Economics and Business
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• 제8권7호
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• pp.161-167
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• 2021

Nowadays, small- and medium-sized enterprises (SMEs) are placed among the key components of the economy in both developed and developing countries. They are internationally known as the driving force based on their enormous contributions to Gross Domestic Product (GDP) and generating new employment. They are generally presumed as the leader of environmental sustainability, economic prosperity, and innovation, particularly for the economy of developing countries such as Vietnam. However, SMEs have difficulty in raising capital, as well as access to credit. One of the reasons is that there are inadequacies in accounting information quality in SMEs as well as the provision of accounting information and accounting information confidentiality. The main objective of this study was to identify, evaluate, and measure the attributes of accounting information quality of SMEs in Hanoi. The study was based on a field survey using a semi-structured questionnaire on a sample of 150 accountants. The study has identified and measured six (6) attributes of accounting information quality of SMEs that have great effects on accountants. There is, statistically, no significant difference in the level of accounting information quality of SMEs in Hanoi from these different business areas. There is no, statistically, significant difference in the level of accounting information quality of SMEs in Hanoi between the mentioned three groups of the job description. Based on the findings, some recommendations are given for SMEs to improve accounting information quality.

• 지능정보연구
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• 제11권2호
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• pp.105-121
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• 2005

EPC를 탑재한 RFID 형태의 스마트객체를 이용한 물류 시스템을 구축하기 위해서는 시스템 구성 요소간의 거래에 필수적인 RFID 객체의 PML 데이터를 표현하고 검색요구에 대응하는 RFID 정보서비스의 설계 및 관리가 매우 중요하다. EPC기반 RPID 정보서비스는 네트워크상의 정보시스템들에 보안과 운영의 이유로 분산되어 있는 RFID 객체 정보들을 검색하여 사용자가 요구하는 결과를 반환하는 역할을 담당한다. 하지만 RFID 객체 정보의 표준화된 표현과 처리, 그리고 분산처리로 인한 통신량과 처리시간 과다의 문제가 존재한다. 이에 대해서 본 연구는 물류시스템의 PML 데이터의 표현 및 사용, 검색패턴을 분석하고, 분석 결과를 기반으로 미들웨어를 이용하는 분산형 RFID 객체 데이터 관리 및 RFID 객체 정보서비스 구조를 설계하고 제시하였다. 단일형 및 통합형 RFID 정보서비스 구조를 제시하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권11호
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• pp.3694-3722
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• 2022

In today's globalized world, there is no transparency in exchanging data and information between producers and consumers. However, these tasks experience many challenges, such as administrative barriers, confidential data leakage, and extensive time delays. To overcome these challenges, we propose a decentralized, secured, and verified smart chain framework using Ethereum Smart Contract which employs Inter Planetary File Systems (IPFS) and MongoDB as storage systems to automate the process and exchange information into blocks using the Tendermint algorithm. The proposed work promotes complete traceability of the product, ensures data integrity and transparency in addition to providing security to their personal information using the Lelantos mode of shipping. The Tendermint algorithm helps to speed up the process of validating and authenticating the transaction quickly. More so in this time of pandemic, it is easier to meet the needs of customers through the Ethermint Smart Chain, which increases customer satisfaction, thus boosting their confidence. Moreover, Smart contracts help to exploit more international transaction services and provide an instant block time finality of around 5 sec using Ethermint. The paper concludes with a description of product storage and distribution adopting the Ethermint technique. The proposed system was executed based on the Ethereum-Tendermint Smart chain. Experiments were conducted on variable block sizes and the number of transactions. The experimental results indicate that the proposed system seems to perform better than existing blockchain-based systems. Two configuration files were used, the first one was to describe the storage part, including its topology. The second one was a modified file to include the test rounds that Caliper should execute, including the running time and the workload content. Our findings indicate this is a promising technology for food supply chain storage and distribution.

• 대한기계학회논문집A
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• 제29권1호
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• pp.124-131
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• 2005

BOM(Bill of Materials) is a list or description of raw materials, parts and assemblies that define a product. Although it is very important for maintenance information system of urban transit, it has problems that the size of database, inaccuracy and the flexibility which is measured as the number of updating records in accordance with added new product or engineering change. To solve these, we divide BOM to a master BOM and various function BOM constructed from the master BOM. That is the component based BOM management system, which is mutually independent and integrated efficiently using component technology. Consequently, after defining the component based master BOM, it is easy to manage the data structure, even restruct, in case there is a need for change of environment or data.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.1577-1580
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• 2004

This paper proposes a design and implementation of transversal adaptive digital filter using LMS (Least Mean Squares) adaptive algorithm. The filter structure is based on Distributed Arithmetic (DA) which is able to calculate the inner product by shifting and accumulating of partial products and storing in look-up table, also the desired adaptive digital filter will be multiplierless filter. In addition, the hardware implementation uses VHDL (Very high speed integrated circuit Hardware Description Language) and synthesis using FLEX10K Altera FPGA (Field Programmable Gate Array) as target technology and uses Leonardo Spectrum and MAX+plusII program for overall development. The results of this design are shown that the speed performance and used area of FPGA. The experimental results are presented to demonstrate the feasibility of the desired adaptive digital filter.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 추계학술대회
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• pp.675-676
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• 2010

최근에 웹 문서의 양이 빠르게 증가함에 따라 사용자가 원하는 정보를 검색하기 위한 효율적인 문서분류방법에 대한 연구가 요구되고 있다. 본 논문에서는 효율적인 문서분류 시스템 개발을 위한 자료수집 단계에서, 제시되는 각 문서에 대해 일관성 있는 문서범주 및 사용용도, 키워드 정보를 부착하기 위한 말뭉치구축 도구를 제안한다. 이 때 다른 사용자가 입력한 정보를 제시함으로써 자신의 것과 비교 및 수정할 수 있는 검증단계를 거쳐 일관성을 높인다. 또한 웹 환경에서 실행하여 말뭉치 구축자가 언제 어디서든지 편하게 말뭉치를 구축할 수 있다.

• International Journal of Precision Engineering and Manufacturing
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• 제1권1호
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• pp.84-90
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• 2000

The importance of Virtual Manufacturing System is increasing in the area of developing new manufacturing processes, implementing automated workcells, designing plant facility layouts and workplace ergonomics. Virtual manufacturing system is a computer system that can generate the same information about manufacturing system structure, states, and behaviors as is observed in a real manufacturing. In this research, a virtual manufacturing system for flexible manufacturing cells (VFMC), (which is a useful tool for building Computer Integrated Manufacturing (CIM), has been developed using object-oriented paradigm, and implemented with software QUEST/IGRIP. Three object models used in the system are the product model, the facility model, and the process model. The concrete behaviors of a flexible manufacturing cell are re[presented by the task-oriented description diagram, TIC. An example simulation is executed to evaluate applicability of the developed models, and to prove the potential value of virtual manufacturing paradigm.

• 한국식품조리과학회지
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• 제13권4호
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• pp.402-409
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• 1997

Understanding the satisfaction and dissatisfaction of employees has been deemed important for smooth and efficient food service management. The aim of this study was to examine the relationship between the dishwashing employees' job satisfaction and the operational and managerial factors in hospital foodservice systems. A survey of twenty conventional hospital food service systems was undertaken and detailed information was collected from 280 dishwashing employees through mailed questionnaires. Dishwashing employees' satisfaction was evaluated by measuring their job attitudes towards four aspects of their job using the modified Job Description Index (JDI). Descriptive analysis and Pearson product moment correlation analysis were used to analyze the data. The dishwashing workers were found to be more satisfied with their interpersonal relations with co-workers than with work content, pay or promotional opportunities. The demographic variables including education, type of employment and work experience were significantly related to job satisfaction. As the ratio of supervisors to dishwashing workers increased, the degree of satisfaction in dishwashing workers increased significantly.

• 경영정보학연구
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• 제6권1호
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• pp.67-84
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• 2004

e-마켓플래이스의 영역이 지속적으로 확장될 것이라는 낙관적인 예측에도 불구하고 이에 대한 반론도 꾸준히 제기되어 왔다. 많은 선행 연구들이 e-마켓플래이스의 성공적 구축을 방해하는 여러 장애요인을 제시하였고 현실적으로도 e-마켓플래이스의 성공사례가 드문 편이다. 따라서 본 연구의 목적은 e-마켓플래이스의 확장 가능성을 살펴보고, e-마켓플래이스가 지속적으로 확장하기 위해서 어떤 요소를 극복하고 관리해야 하는지를 알아보는데 있다. 이를 위하여 성공한 e-마켓플래이스의 사례를 분석하였다. 선행 연구와 사례 분석을 통해 연구된 본 연구의 결과는 다음과 같다. 첫째, 자산 특수성과 제품 복잡성이 높은 시장에서도 e-마켓플래이스가 성공적으로 구현될 수 있으므로, e-마켓플래이스의 영역이 지속적으로 확장될 것을 예상할 수 있었다. 둘째, 그러나 정보기술의 발전에 의해 e-마켓플래이스의 영역이 자동적으로 확장되는것이 아니며, e-마켓플래이스의 확장 시 발생하는 여러 장애 요소를 극복하기 위하여 기술적, 사회적, 그리고 서비스 관련 분야 등 다양한 차원의 요소를 고려하고 문제를 해결하는 e-마켓플래이스 기업의 역량이 e-마켓플래이스의 영역 확장에서 매우 중요함을 알 수 있었다.

• 경영과학
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• 제11권3호
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• pp.87-102
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• 1994

Conceptual database design is an important activity because the performance of a DBMS heavily depends on the proper design of the database, and view integration is one of the most important phases of conceptual database design. During this phase, the individual views designed by separate user groups are integrated into a global view for the entire system. After the view integration, a database schema must be validated before it becomes a stable product of the design. In this paper, a methodology for view integration an validation is suggested. The individual views are modeled by entity-relationship model. The entities are integrated according to their name and domain information. After that, the relationships are merged by their constraints. We also present a methodology for checking redundant relationships which has an algorithmic description.