이러닝시스템의 매체풍부성, 매체유용성, 매체경험이 학습자 만족에 미치는 영향

최수정,강경준,고일상,Choi, Su-Jeong,Kang, Kyung-Jun,Ko, Il-Sang 한국데이터전략학회 2007 Journal of information technology applications & m Vol.14 No.2

In an effort to apply IT to practices of learning, universities are trying to implement e-Learning systems and expanding the extent of their usage. Nowadays, e-Learning systems are not only used for conducting web-based distance learning, but also used for supporting traditional classes education by encouraging communication and information sharing between instructors and learners or among the learners. There is relatively lack of studies on the exploitation of e-Learning systems in the traditional classes, in comparison with a distance education. Specifically, howe-Learning systems could support the traditional class and/or which benefits e-Learning systems could offer in the classes are among the important issues. In this study, we suggest that e-Learning systems would be the rich media to communicate and exchange information among people who participate in a class. We derive key variables like media richness and media experience from Media Richness Theory and from Channel Expansion Theory. Moreover, Media usefulness and Satisfaction of a learner with e-Learning system is drawn from the literature on IS success. We examine the effects of perceived media richness, media usefulness, and media experience on leaner's satisfaction with e-Learning systems. In addition, we also investigate learner's media usefulness perception which is positively related to media richness and media experience. Finally, learner's experience with e-Learning systems affects perceived media richness. Based on the results of an empirical test. we first suggest that perceived media richness with e-Learning systems contributes to increase media usefulness and satisfaction of a learner. Second, media experience is an important predictor of media richness and media usefulness perception. Consequently, the result can support Channel Expansion Theory. Finally, media usefulness perception affects learner's satisfaction with e-Learning systems.

저장매체 스트리밍에서 substream에 기초한 비순차 패킷 스케줄링

최수정,안희준,강상혁,Choi Su Jeong,Ahn Hee June,Kang Sang Hyuk 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.10C

이 논문에서는 스트리밍 미디어에 대해 속도 대비 왜곡을 최적화하는 패킷 스케줄링 알고리듬을 제안한다. 수신단은 패킷을 받으면 ACK를 보내는데, 주기적으로 관측한 채널 throughput을 함께 보낸다. 비디오 패킷의 중요도는 움직임 백터, 텍스처 필드, 시간계층화를 고려하여 GOP 내에서의 위치에 의해 결정되며, 이것을 이용하여 서브스트림을 정의한다. 서버는 수신단으로부터 온 응답 정보와 비디오의 통계적 특징을 사용하여 임의의 시점에서 전송하고자 하는 최적의 서브스트림을 결정한다. 이를 위해 스트리밍 시스템을 류잉 시스템으로 모델링하고, 각 서브.스트림에 있는 프레임의 복호화 실패을을 체감대역폭을 이용하여 계산하고 그 시점에 전송할 최적의 서브스트림을 선택한다. 수신단이 주기적으로 기록하고 전송한 채널정보에 대해, 송신단은 최적의 서브스트림을 새로이 계산하는데, 그때까지 서브스트링의 데이터는 Earliest Deadline First(EDP)방식으로 전송핀다. 이 때, 전송 순서는 원래의 재생 순서와 다르게 된다. 그리고, 실제 비디오 데이터를 사용한 실험에서, 제안한 스케줄링이 기존의 순차적인 전송보다 성능이 좋다는 것을 보여준다. We propose a packet scheduling algorithms for streaming media. We assume that the receiver periodically reports back the channel throughput. From the original video data, the importance level of a video packet is determined by its relative position within its group of pictures, taking into account the motion-texture discrimination and temporal scalability. Thus, we generate a number of nested substreams. Using feedback information from the receiver and statistical characteristics of the video, we model the streaming system as a queueing system, compute the run-time decoding failure probability of a Same in each substream based on effective bandwidth approach, and determine the optimum substream to be sent at that moment in time. Since the optimum substream is updated periodically, the resulting sending order is different from the original playback order. From experiments with real video data, we show that our proposed scheduling scheme outperforms the conventional sequential sending scheme.

고령사회에서 성년후견제도와 신탁 -신탁의 기능과 활용을 중심으로-

최수정 ( Su Jeong Choi ) 법조협회 2015 法曹 Vol.64 No.3

In the aging society it is an important and urgent issue to protect and support the aged by legal institutions. From this perspective the revised Korean Civil Code introducing the new guardianship system is worthy of notice. It provides 4 kinds of guardianship: full guardianship, limited guardianship, specific guardianship, and guardianship contract. But the requisites of each guardianship, the procedure and the effects are insufficient for protecting the assets of the aged and sometimes can be obstacles in using the guardianship system for that purpose. Trusts are very flexible devices for structuring the benefits that property can provide as well as protecting the assets. So trusts are useful for the aged who look for ways to protect and manage assets according to their needs and succeed them. It also makes sense to create a trust for the disabled for whom one is responsible and for whom one fears afterone’s death. Trusts are already considered as an alternative to guardianship. Moreover if trusts and guardianship system are combined, the utility of each institution can be maximized. Especially the combination of guardianship contract and trusts will improve the individual’s autonomy and right of self determination which are the main object of the revised Korean Civil Code.

수익자취소권 재고

최수정 ( Su Jeong Choi ) 법조협회 2014 法曹 Vol.63 No.6

To achieve the purpose of the trust a trustee may exercise powersconferred by the terms of the trust. A trustee also has many duties whichare strict and onerous except to the extent that the trust instrumentmoderates them to a greater or lesser extent. The Trust Act codifiesvarious remedies available to rectify or to prevent a breach of trust forviolation of a duty owed to a beneficiary. When a trustee commits abreach of trust, especially against the trust purpose he does judicial actconcerning trust property, the Trust Act art.75 enables a beneficiary torescind the trustee’s act. The Trust Act art.75 as well as art.76 provide only a few conditionsfor a beneficiary to set aside wrongful acts of the trustee. The draftersleft open for further consideration by the courts and scholars detailedconditions and effects of the beneficiary’s right of rescission. Hitherto anumber of theories contend that this right of beneficiary is equivalent tothe equitable right to trace and the effect is absolute. But thisconstruction doesn’t correspond to the intent and the regulation of theTrust Act art. 75. Actually in English law the beneficiary has a proprietary remedybecause the beneficiary is still the beneficial owner, so he can go againsta third party. But the Korean legal system doesn’t know the separationof ownership, so called dichotomy of ownership. While it is a trusteewho has ownership and manages the trust property, the beneficiary has a硏究論文203beneficial interest in trust. The beneficiary’s rights are fundamentallypersonal. Furthermore the beneficiary’s right of rescission aims to void thetrustee’s wrongful acts and to restitute the trust property. From this pointof view it approaches to the creditor’s right of rescission under the CivilAct, though each of them has a different institutional origin. Accordingto many scholars and case law the effect of creditor’s rescission is onlyrelative for securing valid transactions and striking a balance between theparties concerned. The effect of beneficiary’s right of rescission can beconstrued in the same context :the beneficiary is authorized to rescind the trustee’s act which isagainst the trust purpose, only if the party got a legal interest in the trustproperty with notice, whether actual, constructive, or imputed, of thebreach of trust. As a result the trustee’s act becomes void between thebeneficiary and the party, and the party is obliged to restitute theacquired property or interest to trust fund.

채무자의 신탁재산의 처분 등 일련의 행위에 대한 사해성 판단 - 판례에 대한 비판적 검토를 통하여 -

최수정(Choi, Su Jeong) 서강대학교 법학연구소 2022 서강법률논총 Vol.11 No.1

금전채무불이행의 특칙에 대한 재검토 -손해배상액을 중심으로-

최수정 ( Su Jeong Choi ) 법조협회 2010 法曹 Vol.59 No.9

민법은 다양한 법률관계에서 금전채무를 전제로 하고 있으며, 금전채무에 대해 명시적으로 특칙을 마련하고 있기도 하다. 민법 제397조는 금전채무가 물건인도채무와 달리 금전에 표창된 비물질적인 재산가치의 이전을 목적으로 하는 가치조달채무로서, 그 불이행으로 인한 책임에는 다른 채무불이행과 구별되는 요건과 효과가 부여됨을 명시하고 있다. 그런데 이러한 특칙에 대하여는 금전 내지 금전채무의 특성에 기인한 것이라는 설명만 뒤따를 뿐, 금전채무불이행이 채무불이행법체계 전반에서 갖는 지위, 다른 규정이나 당사자의 이해관계에 비추어본 구체적인 효과와 관련하여서는 충분한 검토가 부족했던 것으로 보인다. 이에 본고는 금전채무불이행으로 인한 손해배상과 관련하여 제397조 제1항을 재검토하고 제398조와의 관계에서도 보다 정합적인 해석론을 모색한다. 제397조 제1항에 대하여 종래 학설과 판례는 손해배상액 산정의 일차적인 기준으로서의 약정이율을 변제기까지의 이율로 해석하고 제398조의 손해배상액의 예정과 준별하였다. 그러나 제397조 제1항 단서는 단순히 변제기까지 이율에 대한 합의의 존재를 묻는 것이 아니라, 손해배상액을 산정하는 기준으로서의 이율을 대상으로 한다. 그러므로 제397조 제1항 단서의 약정이율은 채무불이행을 대비하여 당사자들이 약정한 이율, 즉 지연이율을 의미하는 것으로 해석할 것이다. 그리고 약정이율을 지연이율로 해석하는 한 제398조 제2항에 의한 감액도 가능해진다. 그러나 당사자의 의사해석에 의해 약정된 이율을 도출할 수 없는 때에는 법정이율에 의하여야 한다. 이와 더불어 법정이율은 민법이 의제하는 최소한의 손해에 지나지 않기 때문에, 채권자는 손해배상법 일반원칙에 따라서 초과손해의 배상청구도 가능하다고 할 것이다. 민법상 법정이율이 고정되어 있어서 경제현실을 제대로 반영할 수 없는 상황에서 이러한 해석은 당사자의 의사와 제397조 제1항의 취지를 실질적으로 실현하는 방법이 된다. 나아가 입법론으로서는 민법상 법정이율이 시장금리를 반영할 수 있도록 규율방식을 개선하는 방안을 고려할 필요가 있다.

전자적 지식저장소 내의 조직메모리를 활용한 서비스 품질 향상에 관한 연구

최수정(Choi, Su-Jeong),신선진(Shin, Seon-Jin) 대한경영학회 2012 大韓經營學會誌 Vol.25 No.9

保證(보증)과 相續(상속)

최수정 ( Su Jeong Choi ) 아세아여성법학연구소 2003 아세아여성법학 Vol.6 No.-

Mir dem Tode einer Person geht deren Rechte und Verbindlichkeiten als Ganzes auf eine oder mehrere andere Personen uber. Vererblichkeit ist nach §1005 grundsatzlich imeer dann gegeben, wenn es sich nicht um hochstpersonliche Rechte und Verbindlichkeiten handelt. Bei einigen Rechten oder Verpflichtungen, die in besonderem MaBe personenbezogen sind, ist die Unvererblichkeir geserzlich verankert,zuweilen wird man aus dem Inhalt der Leistungspflicht auch ohne ausdruckliche Gesetzesregel auf die Unvererblichkeit schlieBen Konnen. Soweit eine klare Aussage fehlt, muB die Antwort unter Berucksichtigung des Zwecks der einzelnen Rechtsinstitute, der Interessenlage und des in §1005 enthaltenen Prinzips gefunden warden. Unter diesem Gesichtspunkt betrachter is tide Burgschaftsverpflichrung grundsatzlich vererblich. Eine auf den Erben des Burgen ubergegangene Burgschaftsverpflichrung erfaBt daher auch neu entstandene Anspruche gegen den Hauptschuldner, wenn sie in den Bereich der vom Erblasser ubernommenen Verpflichung fallen. Aber die Rechtsstellung des Burgen beim Globalburgschaftsvertrag is nur unvererblich, wenn es keine Vereinbarung eines Hochstbetrage gibt, also der Erbe ihm zu zustehenden Haftungsbereich nicht vorsehen kann. Wenn der Erbfall mit dem Tode des Hauptschuldner eintritt, die gesamte vertragstechtliche Rechtsstellung des Hauptschuldners bzw. Die Hauptschuld auf den Erben ubergeht, verpflichtet sich der Burge gegenuber dem Glaubiger, fur die Erfullung der Hauptschuld des Erben einzustehen. Und wenn der Erbfall mit dem Tode des Glaubiges eintritt, hat die Sukzession der gesicherten Forderung grundsatzlich ipso iure den Ubergang der Burgschaft zur Folge(Akzessorietatsprinzip)

RRLC-MS/MS를 이용한 견과류 및 그 가공품과 건조과실류의 아플라톡신 분석

최수정(Su Jeong Choi),박주성(Ju Sung Park),정소영(So Young Jung),손여준(Yeo Joon Son),이윤정(Yun Jeong Lyi),김미선(Mi Sun Kim),박소현(So Hyun Park),이상미(Sang Me Lee),채영주(Young Zoo Chae) 한국식품과학회 2011 한국식품과학회지 Vol.43 No.6

국내 유통되는 견과류 및 그 가공품, 건조과실류 총 225건을 대상으로 면역친화성칼럼으로 정제한 후 RRLC-MS/MS을 이용하여 아플라톡신에 대한 오염도를 조사하였다. 보다 효율적인 아플라톡신 분석을 위해 RRLC-MS/MS를 이용하여 직선성, 정확성, 정밀성, 검출한계 및 정량한계로 분석법의 유효성 검증을 하였다. 상관계수(R²)는 0.9999 이상의 우수한 직선성을 보였고, 아플라톡신의 회수율은 71.1-97.2%였고, RSD는 0.25-4.50%로 우수한 재현성을 나타냈다. 검출한계는 0.02-0.05 ㎍/㎏였고, 정량한계는 0.05-0.10 ㎍/㎏였다. 확립된 분석법에 의해 분석한 결과 그 오염수준은 B₁은 0.10-9.94 ㎍/㎏, B₂는 0.08-1.54 ㎍/㎏, G₁은 0.04-3.21 ㎍/㎏, G₂는 0.06-0.14 ㎍/㎏였다. 본 연구결과에서 나타난 오염수준은 국내규격 기준 이하였으나, 곰팡이독소의 생성 특이성을 고려한다면 다양한 식품 유형에 대한 지속적인 아플라톡신 함량조사와 함께 다른 곰팡이독소에 대한 연구도 필요하다고 판단된다. The occurrence of aflatoxins B₁, B₂, G₁ and G₂ in nuts, their products and dried fruits was investigated. Samples were collected from local markets in Seoul and analyzed by rapid resolution liquid chromatography coupled with tandem mass spectrometry using an immunoaffinity column. The chromatography method was validated for assay of aflatoxins using linearity, accuracy, precision and limit of detection and quantification. The linearity in the concentration ranged from 0.10 to 20 ㎍/㎏ with R²>0.9999. Sample recoveries ranged from 71.1 to 97.2% with relative standard deviations below 4.5% for spiking levels from 1 to 10 ㎍/㎏. The limits of detection ranged between 0.02 and 0.05 ㎍/㎏ and the limits of quantification ranged between 0.05 and 0.10 ㎍/㎏. The levels of aflatoxin B₁, B₂, G₁ and G₂ in nuts, their products and dried fruits were B₁ 0.10 to 9.94 ㎍/㎏, B₂ 0.08 to 1.54 ㎍/㎏, G₁ 0.04 to 3.21 ㎍/㎏ and G₂ 0.06 to 0.14 ㎍/㎏.

集合債權讓渡擔保의 해석을 둘러싼 諸問題 : 대법원 2003.9.5., 2002다40456 판결

崔秀貞(Choi, Su-Jeong) 한국민사법학회 2004 民事法學 Vol.26 No.-

Bei der Entscheidung des obersten Gerichtshofs, die in diesem Aufsatz besprochen worden ist, handelt es sich um eine Globalzession. Unter Globalzession ist eine Sicherungsabtretung gegenwärtiger und künftiger Forderungen mit der Besonderheit, daß eine Vielfalt oder Gesamtheit von Forderungen unter einer Gesamtbezeichnung abgetreten wird, zu verstehen. Wie stets bei Vorausabtretungen, gewinnt bei der Globalzession das Bestimmtheitserfordernis besondere Bedeutung. Die praktischen Wirksamkeitsprobleme der Globalzession liegen eher bei der die Interessen des Globalzessionars übermäßig begünstigenden Reichweite. In Betracht kommt also eine Sittenwidrigkeit wegen wirtschaftlicher Knebelung, Beeinträchtigung der wirtschaftlichen Betätigungsfreiheit und Benachteiligung der übrigen Gläubiger. Und strengere Maßstäbe werden bei formularmäßiger Abtretung auf der Grundlage von §§6,11 Nr.3 AGBG an die Angemessenheit der Sicherung gelegt. Einerseits hat der oberste Gerichtshof den Globalzessionsvertrag, der A und der Kläger abgeschlossen hatten, als Vorvertrag qualifiziert. Aber diese Entscheidung ist mit dem Parteiwillen, der durch die Vertragsauslegung erleuchtet wird, nicht zu vereinbaren und aus dem rechtspolitischen Gesichtspunkt sehr bedenklich. Andererseits bei der Abtretung bedarf es der vom Zedent gemachten Mitteilung an den Schuldner oder der Annahme vom Schuldner, damit der Zessionar die abgetretene Forderung geltend macht. Es steht gleich, wenn die Abtretung aufgelöst wird, die Parteirolle daher umgekehrt wird. Die Mitteilung kann mit dem Zustimmung desjenigen, der Zessionar war, zurückgenommen werden. Ohne solche Mitteilung oder gerechte Zurücknahme kann der Zedent vom Schuldner eine Leistung nicht fordern. Aber der Schuldner kann den Leistungsanspruch des früheren Zessionars stets verweigern, denn er hat nun keinen Rechtsgrund dafür. Die Entscheidung des obersten Gerichtshofs, der die Klage des früheren Zessionars (Klägers) abgewiesen hat, ist selbst nicht ungerecht, aber ihre Begründung hat ins klare gebracht zu werden.