• 제목/요약/키워드: Loss of the Documents

검색결과 74건 처리시간 0.027초

Grove를 이용한 구조적 SGML문서의 저장 및 검색 (A Storage and Retrieval System for Structured SGML Documents using Grove)

  • 김학균;조성배
    • 한국정보과학회논문지:컴퓨팅의 실제 및 레터
    • /
    • 제8권5호
    • /
    • pp.501-509
    • /
    • 2002
  • 플랫폼에 관계없이 한번 작성된 문서의 정보를 이기종 시스템간 공유하고 다양한 문서 형식을 지원하기 위해 SGML(1508879)이 사용되고 있다. SGML 문서는 내용뿐만 아니라 구조정보를 가지고 있다. SGML 문서가 널리 보급됨에 따라서 구조적 정보를 이용한 데이타베이스의 구축 및 검색 시스템에 대한 필요성이 고조되고 있다. 그러나, 기존의 색인어를 이용한 전문 검색 엔진으로는 문서의 구조정보를 활용할 수 없다. 본 논문에서는 DSSSL 및 HyTime의 문서 모델인 Grove를 변형한 데이타 모델을 이용하여 문서 형식에 독립적이면서, 문서 형식과 내용을 분리하여 저장하는 SGML 문서 저장 시스템을 개발하였다. 구조정보를 손실없이 저장할 수 있도록 객체 지향형 데이타베이스 시스템인 오브젝트 스토어(Object Store)를 이용하였다. 또한 엘리먼트에 대해 관계형 DBMS와 유사한 인덱스 구조를 생성하여 검색 성능을 향상시켰고, 내용기반 검색과 구조기반 검색을 효율적으로 결합한 사용자 인터페이스를 구축하였다.

Field-Measurement-Based Received Power Analysis for Directional Beamforming Millimeter-Wave Systems: Effects of Beamwidth and Beam Misalignment

  • Lee, Juyul;Kim, Myung-Don;Park, Jae-Joon;Chong, Young Jun
    • ETRI Journal
    • /
    • 제40권1호
    • /
    • pp.26-38
    • /
    • 2018
  • To overcome considerable path loss in millimeter-wave propagation, high-gain directional beamforming is considered to be a key enabling technology for outdoor 5G mobile networks. Associated with beamforming, this paper investigates propagation power loss characteristics in two aspects. The first is beamwidth effects. Owing to the multipath receiving nature of mobile environments, it is expected that a narrower beamwidth antenna will capture fewer multipath signals, while increasing directivity gain. If we normalize the directivity gain, this narrow-beamwidth reception incurs an additional power loss compared to omnidirectional-antenna power reception. With measurement data collected in an urban area at 28 GHz and 38 GHz, we illustrate the amount of these additional propagation losses as a function of the half-power beamwidth. Secondly, we investigate power losses due to steering beam misalignment, as well as the measurement data. The results show that a small angle misalignment can cause a large power loss. Considering that most standard documents provide omnidirectional antenna path loss characteristics, these results are expected to contribute to mmWave mobile system designs.

한국 전자책 문서표준 및 관련 표준과의 변환 기법에 관한 연구 (A Study of Conversion Techniques between Korea eBook Documents Standard and Related eBook Standards)

  • 손원성;고승규;이경호;임순범;최윤철
    • 한국멀티미디어학회논문지
    • /
    • 제6권5호
    • /
    • pp.876-888
    • /
    • 2003
  • 미국과 일본 그리고 한국에서는 전자책 문서 포맷의 표준화에 대한 필요성을 인식하고 정부기관과 관련업계 및 학계가 주축이 되어 OEB PS 및 JepaX, 그리고EBKS 표준안을 제정 한 바 있다. 그러나 EBKS는 미국의 OEB 및 일본의 JeapX와 비교하여, 제정 목적은 물론이고 내부적으로 서로 다른 구조를 포함하고 있다. 그 결과 이러한 표준 문서간의 변환을 위해서는 서로간의 문서 구조에 대한 정확한 분석이 요구되며, 실제 문서 변환시 정보 손실을 최소화 하여야 한다. 따라서 본 논문에서는 이러한 표준 문서간에 정확한 교환 및 문서 구조 손실을 최소화하기 위한 방법을 제시하고 이에 대한 실례를 살펴본다. 그 결과 본 연구에서는 EBKS 및OEB, JepaX간의 컨텐츠 교환 가능성을 제시하며, 이러한 결과는 전자책 표준 및 기타 포맷간의 교환시에도 적용 가능하다.

  • PDF

신용장거래에서 운송서류의 위험요인에 관한 연구 (The Risks of Transport Documents under L/C Transaction)

  • 박세운
    • 무역상무연구
    • /
    • 제45권
    • /
    • pp.85-109
    • /
    • 2010
  • L/C provides the exporter and the importer with safe assurance in the exchange of goods for payment in international trade. It involves a number of parties. Although the parties may have confidence in their client, bad faith or ignorance of international banking practice by any of these parties could cause the failure of transaction, which makes international trade a risky business. Most of the risks are found in transport document, which can cause disputes. There are many factors in the risk of transport documents under L/C transaction. One most common risk factor for the beneficiary in all transport documents is even if there is no discrepancy in document, the issuing bank or the applicant refuses to pay or delay payment insisting there is a discrepancy. In some very rare cases, the beneficiary may not get paid due to unfair injunction of the local court of the applicant. For the applicant, most common risk factors are fake bill and fraud. Risks classified according to the sorts of transport documents are as follows. 1. In B/L, payment can be refused because it is regarded as charter party B/L, although there is no real charter party contract. And the applicant can bear the potential risk of the loss or deterioration of cargo through transhipment of the cargo loaded on board in container if transhipment is prohibited without excluding of UCP 600 article 20 (c). 2. In charter party B/L, the applicant may take delivery without paying when charter party B/L is signed by charterer, which can result in a big loss for the beneficiary and the negotiating bank. And risks may arise when cargo is seized because the charterer does not pay the hire. The applicant and the issuing bank are also vulnerable to a risk - Against whom should they file a suit when cargo gets damaged during transportation? 3. In multimodal transport document, which is subject to a conflict because there is a big difference in viewpoints between transport industry and banks, conflicts may also arise when L/C requires ocean B/L and accepts multimodal transport document at the same time, but does not specify the details. 4. In air waybill, where the consignee is not the issuing bank but the applicant, risks may take place to the beneficiary when the applicant takes delivery but refuses to pay asserting minor discrepancies in document. The applicant may also bear the risk when cargo may not be loaded because air waybill is a received bill. Another risk may arise when although the applicant prohibits transhipment without excluding UCP 600 article 23 (c), the cargo may be transhipped, provided that the entire carriage is covered by one and the same air waybill.

  • PDF

로테르담규칙상 송하인의 책임에 관한 고찰 (A Study on the Responsibility of Shipper under the Rotterdam Rules)

  • 한낙현;김영곤
    • 무역상무연구
    • /
    • 제53권
    • /
    • pp.101-133
    • /
    • 2012
  • The paper aims to analyse the obligations and Responsibilities of shipper in the Rotterdam Rules. The Rotterdam Rules, has underlying intention that it will provide uniform law for the international carriage of goods by sea. It is highly expected that the Rotterdam Rules will create the new international legal regime replacing Hague-Visby Rules and Hamburg Rules. Rotterdam Rules provide the obligations and responsibilities of shipper in express. The shippers obliged to provide, (a) duty as to the condition in which the cargo has to be delivered to the carrier, (b) cooperation of the shipper and the carrier in providing information and instruction, and (c) shipper's obligation to provide information, instructions and documents. The shipper is liable for loss or damage sustained by the carrier if the carrier proves that such loss or damages was caused by a breach of the shipper's obligations. However, the shipper is relieved of all or part of its liability if the cause or one of the causes of the loss or damage is not attributable to its fault or to the fault. But, the shipper shall indemnify the carrier against loss or damage resulting from the inaccuracy of such information. Rotterdam Rules is providing rather concrete as to the shipper's responsibilities and burden of proof in separate chapter. The question is whether such burden of proof of the fault should be imposed to the shipper.

  • PDF

생체신 공여자의 수술전후 관리에 대한 연구 -윤리적인 측면을 중심으로- (Pre and Post Operative management of Living Kidney donor - Focus on bioethical aspect -)

  • 김명희
    • 기본간호학회지
    • /
    • 제2권2호
    • /
    • pp.139-154
    • /
    • 1995
  • The purpose of this study was presented basic data for management of living kidney donor to make bioethical decision. The research subjects were the documents and progress notes of Doctor's and Nurses in medical records related to kidney donation and nephrectomy of 20 kidney donors who received nephretomy at 4 general hospitals in Pusan. The result of this study, a desirable documents to help the living kidney donor might include following : 1st, identification of the donor and the guardian. 2nd, confirmation of the intension of kidney donor which is based on humanity or not and 3rd, a written oath about Nephrectomy. Especially it is more desirable to participate of paramedical personnels such as the religious, the social workers, the counsellors, and etc when assess the motivation of kidney donor and to use of a formulated visual educational materials about renal angiography and nephrectomy which required written consent of kidney donor. Further more, the donor should be educated sufficiently about the kidney itself and procedure for nephrectomy-the anatomical position of kidney, the function of the kidney, the operative maneaver, pre and post operative complication, the prevention of the complication, the possiblity of rejection phenomenon and loss of the transplanted kidney etc. In conclusion, medical team members for kidney transplantation must suggest not only physical problem but also psychological problem And the educated donor ought to have enough time before a making decision and all these process should be recorded in medical records

  • PDF

기준표적상의 미세구조가 초음파 후방산란에 미치는 영향 (Influence of Microstructure on Reference Target on Ultrasonic Backscattering)

  • 김호철;김용태
    • The Journal of the Acoustical Society of Korea
    • /
    • 제29권1E호
    • /
    • pp.38-44
    • /
    • 2010
  • This paper is based on our comments and proposed amendments to the documents, Annex A, Phantom for determining Maximum Depth of Penetration, and Annex B, Local Dynamic Range Using Acoustical Test Objects 87/400/CDV. IEC 61391-2 Ed. 1.0 200X, prepared by IEC technical Committee 87; Ultrasonics. The documents are concerned with the influence of microstructure of reference target material on the ultrasonic backscattering. Previous works on the attenuation due to backreflection and backscattering of reference target materials are reviewed. The drawback to the use of ungraded stainless steel and metallic materials without microstructural data such as, crystal structure, basic acoustic data of sound velocity and attenuation, grain size, roughness and elastic constants has been discussed. The analysis suggested that the insightful conclusion can be made by differentiating the influence arising from target size and microstructure on the backscattering measurements. The microstructural parameters are associated with physical, geometrical, acoustical and mechanical origins of variation with frequency. Further clarification of such a diverse source mechanisms for ultrasonic backscattering would make the target material and its application for medical diagnosis and therapy simpler and more reliable.

UCP 600 합리성 행위기준의 적용방식 : 서류검토기간의 효율과 형평의 균형 (A Study on the Application of Reasonableness in UCP600 : Striking a Fair Balance between Efficiency and Equity)

  • 김기선
    • 무역상무연구
    • /
    • 제57권
    • /
    • pp.111-135
    • /
    • 2013
  • This study analyzes some important spin-off effects of the provision, UCP600 Article 14(6), through the methodology of the expected utility maximization theory based on the state-contingent commodities model. Some technical implications of this study are as follows. First, the risk-averse beneficiary will choose to present his documents more than 5 days before expiry date by paying a higher risk premium (so-called cure period) for full assurance to cure documentary discrepancies, if expressed economically, he pursues loss reducing activities to the point where the expected marginal product of his activities is less than its marginal cost. Secondly, where the effectiveness of securing cure period is uncertain, the risk-averse beneficiary will choose to present documents just on the expiry date without securing any cure period by paying no risk premium. This study finally suggests the safe harbor standard should be optimal solution only if it is supplemented by the hidden reasonableness standard for balancing the conflicts of interest between beneficiaries and banks.

  • PDF

신용장 매입은행의 법적지위 (Legal Status of Negotiating Banks of Documentary Letter of Credit)

  • 허해관
    • 무역상무연구
    • /
    • 제76권
    • /
    • pp.77-101
    • /
    • 2017
  • This article provides the definitions of the negotiation of credit, the negotiating bank and the negotiation credit. It further describes a number of legal status of negotiating banks by looking into the legal relations firstly between the beneficiary and the negotiating bank and secondly between the issuing bank and the negotiating bank. This study is in large part based on relevant provisions of UCP 600 and decisions of the Supreme court of South Korea. Under UCP 600 the definition of negotiation requires the purchase by the nominated negotiating bank of the required documents by advancing funds on or before the banking day on which reimbursement is due to the negotiating bank. A negotiation credit authorizes the negotiating bank who is a nominated bank to purchase from the beneficiary the documents required by the letter of credit and to present those documents to the issuing bank for reimbursement. If the credit is to be honoured at sight, reimbursement is due when the issuing bank determines that there has been a conforming presentation. Reimbursement under a letter of credit available by acceptance or by deferred payment is due at maturity of the credit. In particular, while the timing of advance by the nominated negotiating bank is up to the parties, a promise of the negotiating bank to advance the purchase price to a fraudulent beneficiary does not confer immunity from letter-of-credit fraud prior to its performance. This requires the negotiating bank who is notified of material fraud prior to making an advance to beneficiary to avoid a loss by using the fraud.

  • PDF

휴리스틱을 이용한 kNN의 효율성 개선 (An Improvement Of Efficiency For kNN By Using A Heuristic)

  • 이재문
    • 정보처리학회논문지B
    • /
    • 제10B권6호
    • /
    • pp.719-724
    • /
    • 2003
  • 이 논문은 kNN의 정확도의 손실 없이 kNN의 효율성을 개선하는 휴리스틱을 제안한다. 제안된 휴리스틱은 kNN 실행 시간의 주요 요소인 두 문서간 유사성 계산을 최소화하는 것이다. 이것을 위하여 본 논문은 유사성의 상한값을 계산하는 방법과 훈련 문서를 정렬하는 방법을 제안한다. 제안된 휴리스틱을 문서 분류 프레임?인 AI :: Categorizer 상에서 구현하였으며, 잘 알려진 로이터-21578 데이터를 사용하여 기존의 kNN과 비교하였다. 성능 비교의 결과로부터 제안된 휴리스틱을 적용한 방법이 기존의 kNN보다 실행 속도측면에서 약 30∼40%의 개선 효과가 있음을 알 수 있었다.