• Title/Summary/Keyword: Port Service Quality

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A Study on Privacy Security in Maritime Information Gateway System (지능형 해상교통정보 연계시스템에서의 개인정보 보안에 관한 연구)

  • Yong-hak Song;Hyun Kim;Deuk-Jae Cho;Jong-Hwa Beak;Do-yeon Kim
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2023.05a
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    • pp.202-203
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    • 2023
  • The Ministry of Oceans and Fisheries is providing maritime safety services through the operation of the Korean e-Navigation service, and research is continuously needed to improve reliability and quality to secure the competitiveness of the system. In order to secure such competitiveness, we presented the basic design for the big-data maritime information gateway system for minimizes thereal-time operation impact of the Korean e-Navigation service, and a theoretical hardware structure diagram including pseudonymization procedures to implement the overall system and solve privacy security issues. However, the proposed structure diagram and design include only the overall concept, to link real-time maritime information, required detailed privacy security method to satisfy the Privacy Act of the Republic of Korea. To solve this problem, this study will identify factors to violate the Privacy Act within the real-time maritime information(privacy of shipowner, shipping company, captain, navigator, fisherman, etc.) linked by the big-data maritime information gateway system, and research the method to link the secured information to other institutions by encrypting identified the factors.

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Meal Preference on the School Food Service of Middle School Students in Gwangju and Chollanamdo Area (중학생의 학교급식에 대한 음식기호도 - 광주ㆍ전남지역을 중심으로 -)

  • 김경애;김수자;정난희;전은례
    • Korean journal of food and cookery science
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    • v.19 no.2
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    • pp.144-154
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    • 2003
  • A survey on meal preferences from 693 middle school students was conducted with the objective to enhance the quality of the school food service in Gwangju and the Chollanamdo area. Data were collected by questionnaires and analysed with the SAS program. The most preferred rice was cooked rice; the most unusual meal preference was laver rice; and the most-liked bread was sweet red bean jam bun. The noodle of choice was Tchajangmyon, and the most-liked rice cake was reasoned bar rice cake. The highest ranted korean soups were boiled fish paste soup, kimchi stew, and short rib sour. The most preferred fried meal included fried beef with sweet and sour sauce, and favorite side-dishes were seasoning vinegar squid and kimchi. Yogurt and strawberry were the preferred desserts. A gender difference in preferred foods was seen. The males tended to favor rice with blackish bean sauce, dumpling soup, beef bean curd soup, beef soup, short rib soup, beef bone and tripe soup, hot shredded beef soup, chopped roast chicken, pork roast, roast meat, steamed pork short-ribs, fried port, fried ham, sausage, milk, and yogurt. Males were partial to staple foods and side dishes, The, females favored laver rice, seasoned bar rice cake, bean sprouts soup, fried squid ring, seasoned cucumber, seasoned bean sprouts, fried kimchi, fruits salad, corn salad and citrus fruits. Females tended to choose lighter meals. Meal preference according to residential area showed that, students in Gwangju had more preferences than students in the Chollanamdo area. Classified according to grades, third graders had the greatest meal preference.

An Algorithm to Detect P2P Heavy Traffic based on Flow Transport Characteristics (플로우 전달 특성 기반의 P2P 헤비 트래픽 검출 알고리즘)

  • Choi, Byeong-Geol;Lee, Si-Young;Seo, Yeong-Il;Yu, Zhibin;Jun, Jae-Hyun;Kim, Sung-Ho
    • Journal of KIISE:Information Networking
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    • v.37 no.5
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    • pp.317-326
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    • 2010
  • Nowadays, transmission bandwidth for network traffic is increasing and the type is varied such as peer-to-peer (PZP), real-time video, and so on, because distributed computing environment is spread and various network-based applications are developed. However, as PZP traffic occupies much volume among Internet backbone traffics, transmission bandwidth and quality of service(QoS) of other network applications such as web, ftp, and real-time video cannot be guaranteed. In previous research, the port-based technique which checks well-known port number and the Deep Packet Inspection(DPI) technique which checks the payload of packets were suggested for solving the problem of the P2P traffics, however there were difficulties to apply those methods to detection of P2P traffics because P2P applications are not used well-known port number and payload of packets may be encrypted. A proposed algorithm for identifying P2P heavy traffics based on flow transport parameters and behavioral characteristics can solve the problem of the port-based technique and the DPI technique. The focus of this paper is to identify P2P heavy traffic flows rather than all P2P traffics. P2P traffics are consist of two steps i)searching the opposite peer which have some contents ii) downloading the contents from one or more peers. We define P2P flow patterns on these P2P applications' features and then implement the system to classify P2P heavy traffics.

Content aware Internet Application Traffic Measurement and Analysis for Precise Accounting and Billing (정밀 과금을 위한 컨텐츠기반 인터넷 응용 트래픽 측정 및 분석)

  • 최태상;박정숙;윤승현;김형환;김창훈;정형석;이병준;정태수
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.40 no.10
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    • pp.138-149
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    • 2003
  • As the Internet is quickly evolving from best-effort networks to business quality networks, billing based on the precise traffic measurement becomes an important issue for Internet Service Providers (ISPs). Billing settlement is necessary not only between ISP and customers but also between ISPs. Currently, most ISPs use a flat rate charging policy. Besides the degree of difficulty in deriving appropriate charging policies agreeable by a concerned party, there are substantial technical challenges to come up with a good usage-based accounting system. Usage-based accounting depending on IP packet header information only is not sufficient anymore due to highly dynamic nature of the development and the use of the Internet applications such as peer-to-peer and network games. They are using port numbers dynamically and even several applications can use the same port number. Thus, more precise means of classifying them and accounting their traffic usages are required. In this paper, we propose a high performance, adaptable, configurable, and scalable content-aware application traffic measurement and analysis system which can achieve very accurate usage-based accounting.

Design and Implementation of PDA based RFID Recognition System for the Logistics Application (물류응용을 위한 PDA 기반의 RFID 인식 시스템 설계 및 구현)

  • Jung Sung-Hun;Yim Jae-Hong;Kim Gi-Rae
    • Journal of Navigation and Port Research
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    • v.30 no.1 s.107
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    • pp.85-90
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    • 2006
  • RFID(Radio Frequency IDentification) is appearing by point technology by Ubiquitous environment of new paradigm and Logistics' application But, RFID chip of this is high price and short bandwidth, low power and interference etc. can become technological problem This is getting into obstacle in common use. Reader and tag, Embedded software etc.. that are accomplishing standardization are imported paying most expensive royalty. This paper deals with a RFID cognition system that use PDA under ubiquitous environment to apply to Logistics system A RFID cognition system processes input/output of fundamental information attaching a tag onto products. And a RFID cognition system supports quick, correct and sqfe synthetic Logistics managerial system through construction of database. This can minimize logistics costs and improve the quality of customer service. A RFID cognition system has advantage that can widen range of application to area that cognition system of existent fixing style can not do. Also, it can expect economical effect through inexpensive system construction.

Logistics Network Design of Eco-Friendly industrial estate -Focused on GILC in Busan- (친환경 산업단지의 물류네트워크 설계 - 부산 국제산업물류도시를 중심으로-)

  • Kim, Woong-Sub;Shin, Jae-Young
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2012.06a
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    • pp.273-274
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    • 2012
  • Companies are facing challenges to have high competitiveness because of continuous oil price rising and CO2 emissions regulations. Thus, companies are trying hard to construct effective logistics and operation system to achieve high customer service quality and saving cost. Also the ec-friendly idustrial complex is needed. Busan is in process to construct GILC(Global Industry Logistics City) in west Busan province to achieve high competitiveness and support lack of industrial complex. To construct this kind of logistics industrial complex, it needs logistics system through proper policy and freight transportation co-operation. Especially, efficient management through logistics hierarchy construction in industrial complex is very important for low cost and eco-friendly point of view. Therefore, this paper aims to analyze logistics system and suggest operation model to present logistics complex construction base data.

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International industrial logistics complex logistics network design (국제산업물류단지 물류네트워크 설계)

  • Shin, Jae Young;Kim, Woong-Sub
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2014.06a
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    • pp.221-222
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    • 2014
  • Companies are facing challenges to have high competitiveness because of continuous oil price rising and CO2 emissions regulations. Thus, companies are trying hard to construct effective logistics and operation system to achieve high customer service quality and saving cost. Also the ec-friendly idustrial complex is needed. Busan is in process to construct GILC(Global Industry Logistics City) in west Busan province to achieve high competitiveness and support lack of industrial complex. To construct this kind of logistics industrial complex, it needs logistics system through proper policy and freight transportation co-operation. Especially, efficient management through logistics hierarchy construction in industrial complex is very important for low cost and eco-friendly point of view. Therefore, this paper aims to analyze logistics system and suggest operation model to present logistics complex construction base data.

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A Study on the Application of QR Code through Case Study -Focused on Logistics and Distribution Sector- (사례 분석을 통한 QR 코드의 활용방안 연구 -물류.유통분야를 중심으로-)

  • Park, Eunji
    • Journal of Korea Port Economic Association
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    • v.29 no.4
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    • pp.247-264
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    • 2013
  • QR Code can save much more information than 1D Bar Code and encode various types of information. As it takes less general cost than high priced RFID, it can be recognized through smart-phone without any special facilities. Despite these strengths, QR Code is just used by general people for their daily life service, while 1D Bar Code is applied in all kinds of industry like sales, distribution, production management, quality management and so on. And RFID is also used in many industrial field like harbor and distribution area. The range of QR Code's usage is getting broad but still restrictive. So it is required to make new organized system. Therefore, this research suggests that Applying QR Code in the SCM. Connecting QR Code with SCM, it secures space for data's movement. And it helps not only rise the speed and accuracy of data flow but also reduce logistical cost.

Container Transportation Models in Industrial Estate Area (산업단지내 효율적 컨테이너 운송을 위한 수송 모형)

  • Shin, Jae Young;Kim, Woong-Sub
    • Journal of Navigation and Port Research
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    • v.38 no.2
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    • pp.171-176
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    • 2014
  • Companies are facing challenges to have high competitiveness because of continuous oil price rising and CO2 emissions regulations. Thus, companies are trying hard to construct effective logistics and operation system to achieve high customer service quality and saving cost. Also the ec-friendly idustrial complex is needed. Busan is in process to construct GILC(Global Industry Logistics City) in west Busan province to achieve high competitiveness and support lack of industrial complex. To construct this kind of logistics industrial complex, it needs logistics system through proper policy and freight transportation co-operation. Especially, efficient management through logistics hierarchy construction in industrial complex is very important for low cost and eco-friendly point of view. Therefore, this paper aims to analyze logistics system and suggest operation model to present logistics complex construction base data.

A Study of Strategic Alliance on Negative Factors Affecting - Focused on Liner Shipping - (전략적 제휴에 부정적인 영향을 미치는 요인에 관한 연구 - 정기선사를 중심으로 -)

  • Kim, Dong-Yol
    • Journal of Korea Port Economic Association
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    • v.27 no.3
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    • pp.247-272
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    • 2011
  • Because of operating and ordering vessels over 10,000 TEU, the strategic alliance between liner shipping companies will be diversified and activated more briskly to secure cargo quantities, minimize costs, secure profits, improve service quality and manage stable business. Many of prior studies concerning strategic alliance are carried out to clarify success factors, motives or to explain how to select a good partner for success. But over 70% of strategic alliance has been resulted in failure. Because failures of strategic alliance occur much more frequently than success, negative effect factors in strategic alliance have to be measured and be adapted to changing conditions in the shipping market. To improve negative effect factors, shipping companies should make an effort to establish reliable relationships between partners and suppress claims by clearing off imprecise contract terms. And it is necessary to increase satisfaction of each individuals and minimize complexity occurred due to the exterior relationships for the successful strategic alliance.