• 산업경영시스템학회지
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• 제31권2호
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• pp.112-121
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• 2008

Nowaday the supply chain competitiveness is emphasized more and more than a company's own competitiveness. One of the most important processes in import and export is a publication over the Bill of Loading. In the publication of those bills S/R(shipping request) and check B/L for reviewing are circulated among consignors, forwarders, shipping companies and airlines by fax and e-mail. Or there should be expensive a One to One system, like an EDI. Each party has to re-input S/R data to their own systems and check it several times. The S/R data are converted digital to analog type and analog to digital repeatedly to check in the process. As the process goes by there can be not only input data errors but also waste of time and cost. ECR(electronic character recognition) is a technology can solve the Problem. Considering the data structure of documents in many systems used ECR samples SIR data from documents written in the digital type. But it is not enough with it only. To make N to N composition in reality more efficient we make a documents hub on the web reengineering the existing process to One to One relation. The ECR documents hub system has given us beneficial effects over a year throughout a field test.

• 대한안전경영과학회지
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• 제15권1호
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• pp.193-198
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• 2013

Warehouse Management System was a helper of business in past, but it is perceived as a core competitive power and a tool for generating new business. It have been come out some new prospects for WMS due to generalization of global outsourcing and extension of the range of supply chain. In China, H automobile company construct the new WMS for providing the production extension and increment of part demand for A/S. This paper deals with the location management in warehouse, warehouse management, delivery management of goods from a warehouse, inventory management organizing WMS for construction of A/S warehouse in H motor in China. Then we identified the several problems of existing warehouse and constructed the driving organization and methods for overcoming these problems. We continually gather data for analysing the effects of new A/S warehouse and WMS construction.

• 무역상무연구
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• 제47권
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• pp.263-298
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• 2010

The global trading system is vulnerable to terrorist exploitation while the international trade is an essential element for the economic development. Customs has a unique role in the international trade to provide increased security while ensuring facilitation of the legitimate flow of goods and the role of Customs has become more and more indispensable these days. In response to this trend, the World Customs Organization(WCO), the organization of more than 170 Customs administrations all over the world, adopted an international framework("SAFE Framework") in 2005, which includes the Authorized Economic Operator(AEO) concept, whereby a party involved in the international movement of goods would be approved by Customs as complying with the supply chain security standards, and given benefits, such as simplified Customs procedure and less Customs intervention. In this stream, the Japanese government has developed and promoted AEO Program in close cooperation with the business sector, aiming at ensuring security while facilitating legitimate trade. For that purpose, Japan Customs, as a main entity in the field of international trade, has developed comprehensive AEO program with combination of programs for importers, exporters, warehouse operators, Customs brokers and logistics operators, such as forwarders and carriers, which are consistent with the "SAFE Framework" developed by the WCO. The purpose of this paper aims to analyse the introduction plans of AEO program for the trade security and trade facilitation with Japanese AEO system.

• 산업경영시스템학회지
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• 제32권2호
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• pp.57-65
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• 2009

In continuous review inventory model, (${\varrho}$, ${\gamma}$) system, order quantity(${\varrho}$) and reorder point(${\gamma}$) should be determined to calculate inventory-related cost that consists of setup, holding, and penalty costs. The procedure to obtain the exact value of ${\varrho}$ and ${\gamma}$ is complex. In this paper, a regression analysis is proposed to get the approximate inventory-related cost without the determination of ${\varrho}$ and ${\gamma}$ in the case that the standard deviation(${\sigma}$) of the lead time demand is small or that the mean(${\mu}$) of the lead time demand is proportional to ${\sigma}$. To save inventory-related cost, central warehouses with (${\varrho}$, ${\gamma}$) system can be built. Central warehouse can provide some stores with products with the consideration of the tradeoff between inventory-related cost and transportation cost. The number and the location of central warehouses to cover all the stores are determined by a regression-based approach. The performance of the proposed approach is tested by using some computational experiments.

• 한국통신학회논문지
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• 제37권1C호
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• pp.17-23
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• 2012

RFID(Radio Frequency IDentification)는 바코드를 대체해 많은 분야에서 각광을 받고 있으나, 현재까지는 적용 범위가 유통관리, 판매 등의 한정된 산업 분야에서 주로 이용되어 왔다. 본 논문에서는 RFID 시스템을 실제 공정과정에 적용할 경우의 운영 방안 및 효과에 대한 연구 결과를 기술하였다. 아울러 RFID 시스템의 도입 전과 후의 비용 관점에서의 비교 분석 결과, RFID 시스템의 운용 이후 이에 투자되는 비용 상쇄는 물론 그 이상의 효과가 있음을 확인 하였다. 따라서 본 연구 결과는 바코드 시스템에서 RFID 시스템으로의 교체를 망설이는 많은 제조업체들의 의사결정에 크게 기여할 수 있을 것으로 기대된다.

• JSTS:Journal of Semiconductor Technology and Science
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• 제10권1호
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• pp.1-10
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• 2010

This paper proposes a two-phase clocked adiabatic static CMOS logic (2PASCL) circuit that utilizes the principles of adiabatic switching and energy recovery. The low-power 2PASCL circuit uses two complementary split-level sinusoidal power supply clocks whose height is equal to $V_{dd}$. It can be directly derived from static CMOS circuits. By removing the diode from the charging path, higher output amplitude is achieved and the power consumption of the diode is eliminated. 2PASCL has switching activity that is lower than dynamic logic. We also design and simulate NOT, NAND, NOR, and XOR logic gates on the basis of the 2PASCL topology. From the simulation results, we find that 2PASCL 4-inverter chain logic can save up to 79% of dissipated energy as compared to that with a static CMOS logic at transition frequencies of 1 to 100 MHz. The results indicate that 2PASCL technology can be advantageously applied to low power digital devices operated at low frequencies, such as radio-frequency identifications (RFIDs), smart cards, and sensors.

• Journal of Electrical Engineering and Technology
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• 제7권6호
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• pp.814-823
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• 2012

Electric power transmission utilities make an effort to maximize profit by reducing their electricity supply and operation costs while maintaining their reliability. The development of maintenance strategies for aged components is one of the more effective ways to achieve this goal. The reliability centered approach is a key method in providing optimal maintenance strategies. It considers the tradeoffs between the upfront maintenance costs and the potential costs incurred by reliability losses. This paper discusses the application of the Particle Swarm Optimization (PSO) technique used to find the optimal maintenance strategy for a transmission component in order to achieve the minimum total expected cost composed of Generation Cost (GC), Maintenance Cost (MC), Repair Cost (RC) and Outage Cost (OC). Three components of a transmission system are considered: overhead lines, underground cables and insulators are considered. In regards to aged and aging component, a component state model that uses a modified Markov chain is proposed. A simulation has been performed on an IEEE 9-bus system. The results from this simulation are quite encouraging, and then the proposed approach will be useful in practical maintenance scheduling.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2012년도 추계학술대회
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• pp.84-85
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• 2012

지속적인 유가 상승과 탄소배출 규제 강화는 기업들로 하여금 높은 경쟁력을 가지도록 요구한다. 따라서 고객 서비스 증대와 비용절감을 위해 효율적인 물류시스템을 구축하고 운영하는 것에 많은 노력을 기울이고 있으며 경쟁력을 가지는 물류단지의 필요성이 증대되고 있는 실정이다. 이러한 물류도시를 구축하기 위해서는 적절한 정책과 화물수송 공동화를 통한 물류시스템이 필요하다. 특히, 단지내 물류시스템의 체계구축을 통한 효율적인 운영은 저비용 친환경적인 측면에서 매우 중요하다. 따라서 본 연구에서는 물류단지내 효율적 운송을 위한 물류네트워크를 운영 모델을 제시하고 특히 운송 다단화 단계를 통해 문제에 접근하고자 한다.

• 정보처리학회논문지A
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• 제13A권4호
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• pp.317-322
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• 2006

RFID 시스템은 최근 다양한 분야로 적용되면서 개발이 급증하고 있다. 특히 RFID 시스템은 공급 업체의 물류분야에서 공급 사슬 관리 시스템의 중추적인 기술로 사용된다. 물류분야에서는 신속하고 정확하게 제품을 파악해야 하는데 제품의 이동으로 인하여 제품의 재고관리를 실시간으로 처리하는데 문제점이 있다. 본 논문에서는 이러한 문제점을 해결하기 위하여 RFID 네트워크의 구조적 기준이 되는 EPC-IS 네트워크를 이용하여 제품의 재고 상태를 실시간으로 파악한다. 또한 위조품이나 도난품을 파악하는 정품인증 서비스를 실시간으로 제공한다. 따라서 본 논문을 통하여 제품의 관리를 실시간으로 처리할 수 있음을 보인다.

• Animal Bioscience
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• 제37권4_spc호
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• pp.730-741
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• 2024

Pig production is one of the viable enterprises of the livestock sub-sector of agriculture. It contributes significantly to the economy and animal protein supply to enhance food security in Africa and globally. This article explored the present status of pig production in Africa, the challenges, prospects and potentials. The pig population of Africa represents 4.6% of the global pig population. They are widely distributed across Africa except in Northern Africa where pig production is not popular due to religio-cultural reasons. They are mostly reared in rural parts of Africa by smallholder farmers, informing why majority of the pig population in most parts of Africa are indigenous breeds and their crosses. Pig plays important roles in the sustenance of livelihood in the rural communities and have cultural and social significance. The pig production system in Africa is predominantly traditional, but rapidly growing and transforming into the modern system. The annual pork production in Africa has grown from less than a million tonnes in year 2000 to over 2 million tonnes in 2021. Incidence of disease outbreak, especially African swine fever is one of the main constraints affecting pig production in Africa. Others are lack of skills and technical know-how, high ambient temperature, limited access to high-quality breeds, high cost of feed ingredients and veterinary inputs, unfriendly government policies, religious and cultural bias, inadequate processing facilities as well as under-developed value-chain. The projected human population of 2.5 billion in Africa by 2050, increasing urbanization and decreasing farming population are pointers to the need for increased food production. The production systems of pigs in Africa requires developmental research, improvements in housing, feed production and manufacturing, animal health, processing, capacity building and pig friendly policies for improved productivity and facilitation of export.