Design of Advanced Planning System for Supply Chain Management Supporting ATP

Joonsoo Bae(배준수),Jake Han(한종길) 대한산업공학회 2002 대한산업공학회 춘계학술대회논문집 Vol.2002 No.5

능등형 DB를 이용한 워크플로우 프로세스의 자동 실행

배준수(Joonsoo Bae),김영호(Yeongho Kim),강석호(Suk-Ho Kang) 대한산업공학회 2000 대한산업공학회지 Vol.26 No.3

정보전략계획 단계에서의 정보시스템 규모 예측

배준수(Joonsoo Bae),정재윤(Jae-Yoon Jung) 한국전자거래학회 2009 한국전자거래학회지 Vol.14 No.3

기업과 정부는 경쟁력 제고와 효율성 확보를 위해 지속적인 정보화사업을 추진하고 있다. 정보화사업의 규모가 커짐에 따라 정보시스템 개발 규모를 측정하고 비용을 예측하는 일이 중요해지고 있다. 본 연구에서는 정보전략계획 단계에서 정보시스템 개발 규모를 합리적으로 측정하기 위하여 기능점수를 활용하는 과정을 설명한다. 정보전략계획의 산출물로부터 프로젝트 종류를 식별하고, 기능점수 산출 범위와 경계를 정의한 후, 데이터 기능과 트랜잭션 기능으로 나누어 기능점수를 계산한다. 특히, 정보전략계획 단계에서 불명확한 기능점수의 복잡도 계산을 하기 위하여 간이기능점수를 활용한다. 합리적인 정보시스템 규모 예측은 투입 공수와 사업 대가를 결정함으로써 성공적인 정보화 사업을 수행하는 밑거름이 될 것이다. Many companies and governments perform information technology (IT) projections repeatedly for higher competitiveness and efficiency. Moreover, as the sizes of IT projects increase, the manpower and cost estimation of the projects are getting more important. In this research, we present a size estimation method of information system development projects on the basis of the function point method at the stage of information strategy planning(ISP), and illustrate the size calculation of an example IT project. According to the method, we first identify the types of projects, the scope and boundaries of size estimation, then count data and transaction functions from the artifacts of the ISP project. The unadjusted function points are adjusted to function point by the table of the Early Function Point. The way of calculating the sizes of IT projects will support successful IT projects by estimating reasonable manpower and cost for the projects.

납기 회답 지원 SCM을 위한 생산 계획 모델의 설계 : 조립/가공 산업 중심

배준수,한종길 한국경영과학회 2002 한국경영과학회 학술대회논문집 Vol.- No.1(1)

근래 정보 시스템의 흐름은 생산 분야의 관리뿐만 아니라, 고객과의 관계를 중시하는 CRM(Customer Relation Management)과 공급업체와의 협업 관계를 유지하는 eProcurement 시스템에 초점을 맞추고 있다. 즉, 기존에는 단위 생산 시스템의 관리에 중점을 두었지만 최근에는 그 외부 요소들에 대한 관리의 중요성을 인식하게 되었고 이를 통칭하여 공급망 관리(SCM: Supply Chain Management)라고 한다. 본 논문에서는 공급망 관리에서 필요한 생산 계획수립 문제에 대해서 살펴본다. 특히 고객과의 관계에서 중요한 기능인 납기 회답을 지원하는 생산 계획 수립의 실행 주기에 대해서 살펴 본다. 첫째, 단위 생산 시스템에서 사용하는 작업 지시(Work Order)와 구매 지시(Purchase Order)를 생성하는 정규계획 모델에 대해서 설명한다. 정규계획 모델에서 필요로 하는 정적 정보와 동적 정보의 수집 및 계획의 실행을 담당하는 ERP 시스템과의 관계에 대해서 정의하고 정규계획 모델의 운영 주기를 정의한다. 둘째, 정규계획 모델과 상호 협조하면서 납기 회답을 지원하는 납기회답 모델의 설계에 대해서 살펴본다. 정규계획 모델과 달라지는 입력 부분의 정의와 정규계획 모델과의 상호 관계를 정의한다. 다음으로, 정해진 납기를 지키기 위해서 정규계획 모델에서 고려해야 하는 요소에 대해서 알아본다. 가장 중요한 것으로 작업 부하와 생산 용량을 고려한 계획 일자(PST)와 고객 납기와 제조 공정 LT를 고려한 계획 일자(LPST)중 최소값을 원자재의 납기 일자로 사용하는 것을 제안한다. 동시에 신규 구매 지시 계획을 생성하기 보다는 기존에 발행된 구매 지시의 우선적 사용과 기존 구매 지시의 납기 일자를 고객 납기에 가장 잘 맞출 수 있도록 변경하는 방안을 제시한다. 이렇게 함으로써 최대한 고객 납기를 만족하도록 계획을 수립할 수 있게 된다. 본 논문에서 제시하는 계획 모델을 사용함으로써 고객 주문에 대한 대응력을 높일 수 있고, 계획의 투명성으로 인한 전체 공급망의 Bullwhip effect를 감소시킬 수 있는 장점이 있다. 동시에 이것은 향후 e-Business 시스템 구축을 위한 기본 인프라 역할을 수행할 수 있게된다.

Stock Prediction Analysis based on Interdependence between Stock Index and Foreign Exchange Rate

Otgontsetseg,Joonsoo Bae(배준수) 대한산업공학회 2013 대한산업공학회 춘계학술대회논문집 Vol.2013 No.5

One country’s foreign exchange rate and stock index are critical parameters of current economic situation. Furthermore, these two parameters tend to have strong correlation. This paper presents one method to predict stock index using interdependence between stock index and currency rates. At the first step, the interdependencies between stock index and foreign exchange rate are studied during Scatter Plot analysis, Regression analysis, and Correlation analysis. The data set is daily exchange rates (US Dollor, Korean Won) from Reserve Bank of New Zealand, and stock indexes (KOSPI, NASDAQ) from Korea and USA for three years (2010.3~2013.3). At the next step, stock prediction model is made using Nerual Network prediction approach. Using this model, future stock index can be predicted from existing stock index and currency rates. The experimented results show the validation of the model.

Stock Prediction Analysis based on Interdependence between Stock Index and Foreign Exchange Rate

Otgontsetseg,Joonsoo Bae(배준수) 한국경영과학회 2013 한국경영과학회 학술대회논문집 Vol.2013 No.5

One country’s foreign exchange rate and stock index are critical parameters of current economic situation. Furthermore, these two parameters tend to have strong correlation. This paper presents one method to predict stock index using interdependence between stock index and currency rates. At the first step, the interdependencies between stock index and foreign exchange rate are studied during Scatter Plot analysis, Regression analysis, and Correlation analysis. The data set is daily exchange rates (US Dollor, Korean Won) from Reserve Bank of New Zealand, and stock indexes (KOSPI, NASDAQ) from Korea and USA for three years (2010.3~2013.3). At the next step, stock prediction model is made using Nerual Network prediction approach. Using this model, future stock index can be predicted from existing stock index and currency rates. The experimented results show the validation of the model.

Long-term evaluation of a liquid crystal polymer (LCP)-based retinal prosthesis

Jeong, Joonsoo,Hyun Bae, So,Seo, Jong-Mo,Chung, Hum,June Kim, Sung IOP 2016 Journal of neural engineering Vol.13 No.2

<P> <I>Objective</I>. The aim of this study is to evaluate the long-term reliability of a recently presented liquid crystal polymer (LCP) -based retinal prosthesis <I>in vitro</I> as well as <I>in vivo</I>. Because an all-polymer implant introduces another intrinsic leak type due to gas permeation, for which the traditional helium leak test for metallic packages was not designed to quantify, a new method to investigate its durability is required. <I>Approach</I>. We designed and carried out a series of reliability tests specifically for all-polymer implants by quantitatively investigating moisture ingress through various pathways of the polymer surface, and the polymer–polymer and polymer–metal adhesions. Moisture permeation through the bulk material was estimated by analytic calculation, while water ingress through the adhesively sealed LCP–LCP and LCP–metal interfaces was investigated using the separate parts of an electrode array and a package in an accelerated aging condition. <I>In vivo</I> tests were done in rabbits to examine the long-term biocompatibility and implantation stability by fundus observation and optical coherence tomography (OCT) imaging. <I>Main results</I>. The analytic calculation estimated good barrier properties of the LCP. Samples of the LCP-based electrode array failed after 114 days in 87 °C saline as a result of water penetration through the LCP–metal interface. An eye-conformable LCP package survived for 87 days in an accelerated condition at 87 °C. The <I>in vivo</I> results confirmed that no adverse effects were observed around the retina 2.5 years after the implantation of the device. <I>Significance</I>. These long-term evaluation results show the potential for the chronic use of LCP-based biomedical implants to provide an alternative to traditional metallic packages.</P>

A Miniaturized, Eye-Conformable, and Long-Term Reliable Retinal Prosthesis Using Monolithic Fabrication of Liquid Crystal Polymer (LCP)

Jeong, Joonsoo,Hyun Bae, So,Min, Kyou Sik,Seo, Jong-Mo,Chung, Hum,June Kim, Sung IEEE 2015 IEEE Transactions on Biomedical Engineering Vol.62 No.3

<P>A novel retinal prosthetic device was developed using biocompatible liquid crystal polymer (LCP) to address the problems associated with conventional metal- and polymer-based devices: the hermetic metal package is bulky, heavy, and labor-intensive, whereas a thin, flexible, and MEMS-compatible polymer-based system is not durable enough for chronic implantation. Exploiting the advantageous properties of LCP such as a low moisture absorption rate, thermobonding, and thermoforming, we fabricate a small, light-weight, long-term reliable retinal prosthesis that can be conformally attached on the eye-surface. A LCP fabrication process using monolithic integration and conformal deformation was established enabling miniaturization and a batch manufacturing process as well as eliminating the need for feed-through technology. The functionality of the fabricated device was tested through wireless operation in saline solution. Its efficacy and implantation stability were verified through in vivo animal tests by measuring the cortical potential and monitoring implanted dummy devices for more than a year, respectively.</P>

Analysis of Website Ranking in Search Engine using Multi-criteria Decision

Nita Solehati,Joonsoo Bae,Youngki Kang 대한산업공학회 2012 대한산업공학회 춘계학술대회논문집 Vol.2012 No.5

Over past decade, internet has been growing very fast and has become an integral part in modern business activity. As such, search engine - a tool to find online data, e.g., Google, Bing, Yahoo etc - has become the most popular website application among others. In the cyber world, it is widely known that the highest rank website is the most popular one for which it is beneficial not only in terms of advertisement rate, but also can promote the website for business activity. Therefore, every company expects their website to appear in the top 10 or in the first page of search engine website; this fact makes web developers highly competitive to get into the highest rank on the search engine. Currently, there are many available search engines that can be used to help internet users; every search engine, however, has different way of indexing the website ranking: Google has 5 criteria whereas its closest competitor, Yahoo, has 4 criteria. Thus, indexing website rank is a multi-criteria decision for which it can be solved using some method. In this paper, we explore and evaluate the ability of PROMETHEE to indexing and rank some websites based on multi-criteria analysis, for which the results is similar to one done by Google. This method allows company to easily compare their website popularity among competitors website in the search engine which can be used as powerful tool to boost their marketing strategy.

Improve Pulmonary Nodule Classification Performance Utilizing Proper Metrics and Augmentation Methods

Dawei Luo,Joonsoo Bae,Yoonhyuck Woo,Jang Hyun Baek 대한산업공학회 2022 대한산업공학회 추계학술대회논문집 Vol.2022 No.11