• 산업경영시스템학회지
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• 제36권3호
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• pp.133-141
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• 2013

The revitalization of e-business via Internet brings big changes to the postal business, and leads to a tremendous increase of heavy and large sized postal mails with continuing growth of home delivery business. Thus, even though the number of intermediate storages for mail delivery that mailmen use for picking up mails in the middle of mail delivery has been being increased, it has still many problems such as insufficient number and size of the storages as well as avoidance of mail keeping of trust agents. It is necessary that safety of mail keeping, seamless mail delivery, and individual parcel pick-up process reestablishment should be made through an improved counter plan for the problems described previously. This study presents the efficient and right operational plan for the intermediate storage for mail delivery with providing the number and size of intermediate storages per mail delivery sequence according to four different types of post offices.

• 산업공학
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• 제13권3호
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• pp.548-555
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• 2000

TAn E-Mail system is one of the most important services for enterprise and electronic commerce end users on the Internet. However, security for an E-Mail service is not satisfied yet, an E-Mail system with security service is definitely required especially in electronic commerce system. In this paper, an E-Mail system with confirmation of e-mail delivery is proposed, The certification of delivery of E-Mail message is not provided in conventional E-Mail systems. The proposed E-Mail system is composed of this certification of delivery and basic security services. The certification of delivery can prove sender's E-Mail message is securely sent to legitimate receivers. The system is designed and implemented by Java Cryptography API.

• 대한전자공학회논문지TC
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• 제47권11호
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• pp.7-13
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• 2010

우편물 배송에 있어서 신속함과 비용의 최소화를 위하여 각 구간별 운송거리와 더불어 우편 운송차량 수와 같은 가중치를 고려하여 우편물의 총 이동 거리를 최소화 할 수 있는 최적의 교환센터 선정이 필요하다. 본 논문은 구간별 운송 차량수와 운송 거리를 고려하여, 국내 주요 도시에 위치한 우편 집중국을 연결하는 최적 위치의 교환센터를 GOSST 이론을 이용하여 찾는 방법을 제안한다. 이 방법으로 교환센터의 위치를 선정할 경우, 현재의 대전을 교환센터로 하는 방법은 물론, 운송차량 수와 같은 가중치를 고려하지 않은 스타이너 트리 방법에 비해 전체 우편물의 총 이동거리를 줄일 수 있다. 제안 방법은 신속한 배송과 비용의 최소화는 물론 환경 보호 측면에서도 바람직하다할 수 있다. 제안된 방법은 실험에서 스타이너 트리를 이용한 방법에 비해 2.52%, 현재의 방법에 비해 6.66%의 우편물의 총 이동 거리를 절감시킬 수 있었다. 제안된 방법은 우편물 배송뿐 아니라, 다양한 전압 및 가중치를 고려해야하는 송전 시스템 라우팅, 배전선로망 구성, 전력 중계소의 위치 선정 등에도 활용가능하다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -2
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• pp.830-833
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• 2002

To solve the internal security problem such as human error and bad faith, the automation of computer system management is significant. For this purpose, we focus attention in the automation of Mail Delivery Service. Today, requirement for reliable mail delivery system becomes larger and larger. However, existing systems are too strict about their configuration. Hence, we propose the method based on Reinforcement Learning (RL) to achieve proper MX record ordering. A measure on validity of the design of system, such as network topology number of servers and so on, is also obtained as side benefit. In order to verify the usability of the presented method, we did on a small model of mail delivery system. As a result, we show that RL is available for determination of the proper MX record ordering. Additionally, we suggest that it is also available for comparing validity of setting of MTA and the network design.

• 경영과학
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• 제33권3호
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• pp.1-18
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• 2016

Recently, ordinary mail is decreasing continuously by the development of ICT (Information and Communications Technology) including E-mail, messenger service, and etc. On the contrary, parcel post is increasing by the increase of online shopping, home shopping, and etc. Aside from these changes, the demand for various mail acceptance and delivery means is increasing with the increase of single households and dual-income couples. To overcome these environmental changes, Korea Post installs unmanned post offices which are composed of various unmanned mail acceptance and delivery postal systems. In this paper, we propose the methodological approach for the site selection of unmanned post office among the existing post offices and the installation standard of unmanned postal system considering the operation cost by the mail volume.

• 산업공학
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• 제24권4호
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• pp.435-446
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• 2011

Performance measures play a critical role in formulating mail delivery strategies and evaluating actual results. Nevertheless, the existing method and corresponding system to determine the standard workloads of mailmen is developed without careful consideration of real delivery environments and various requirements of mailmen. Hence, the current system is insufficient for optimal management of workloads and shows substantial gaps when compared to the results of actual work-site. This study considers how to improve the current workload management system of mailmen. We first performed the as-is analysis of the mail delivery service and then developed a prototype of advanced delivery workload management system. The to-be system consists of five subsystems which can be grouped into three categories; master data management, workloads management, performance analysis. Our results can be a valuable guide for the development of real system for measuring and balancing the workloads of mailmen.

• 산업공학
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• 제20권4호
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• pp.515-524
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• 2007

This paper introduces the methodology for restrict adjustment of 25 mail sorting centers including 3 new mail sorting centers to balance their work loads and minimize their operating costs. We calculated the capacity of mail sorting centers considering mail types and analyzed the collection/delivery mail volume of 214 post offices to measure the work loads of mail sorting centers. We also developed the mathematical model and genetic algorithm to find the optimal solution for this problem.

• 한국정보처리학회논문지
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• 제6권11S호
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• pp.3289-3298
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• 1999

E-mail system is the most important service that enterprises and normal users in internet use. However, because a data security is not satisfied yet, and E-mail system with security service is essential. In this paper, We implemented the E-mail system with Certification of Delivery that was not provided in prior mail system with basic security services and can prove that sender's document is properly sent to the intended receipt. And an implementation of the system used Java Cryptography API.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제9권1호
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• pp.86-94
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• 2003

배달 증명 전자 메일(certified e-mail)은 수신자가 메일을 받았을 때 그리고 그 때만 송신자가 0영수증을 받는 시스템이다. 최근에 발표된 낙관적(optimistic) 기법에서는 이전 방법과는 달리 메일이 언제든지 수신자에게 전달될 수 있는 상태가 되면 수신 영수증이 발행된다. 따라서, 송신자는 수신 영수증을 확보하였음에도 불구하고 수신자가 실제로 메일을 받았는지 여부를 알 수 없다. 본 논문에서는 최근에 발표된 낙관적 기법의 문제점을 지적한 후, 수신 의무 시간 개념을 도입하여 기존 프로토콜을 보완한 내용을 제시한다. 수정된 프로토콜에서는 영수증의 의미를 수신 약속으로 변경시켜 위에서 언급한 문제점을 해결했다. 제시된 기법은 대부분의 낙관적 기법에 적용 가능하며 프로토콜 수행에 필요한 메시지 수를 더 이상 늘리지 않아 기존 기법에 비해 추가되는 부담이 거의 없다.

• 한국의류산업학회지
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• 제5권3호
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• pp.221-226
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• 2003

This study evaluates the problems with various aspects of Korean mail carrier uniforms. It is sponsored by the as part of a 2002 research project. This research project is 'A study on mail collection and delivery environment based on ergonomics'. One of the most urgent tasks to create a better work environment is improvement of mail carrier uniforms. Improved uniforms will result in improved job performance and satisfaction.