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.

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

콜센터에서 상담사의 조직동일시 형성과 결과에 관한 연구

최수정(Su-Jeong Choi) 대한경영학회 2014 大韓經營學會誌 Vol.27 No.7

채권자취소권의 관점에서 본 신탁법상의 취소제도

최수정(Choi, Su Jeong) 한국법학원 2016 저스티스 Vol.- No.155

채무자가 채권자를 해함을 알면서 신탁을 설정한 경우, 채권자는 사해신탁을 취소할 수 있다. 사해신탁은 민법 제406조 제1항이 정한 재산권을 목적으로 한 법률행위로서, 사해신탁취소권은 기본적으로 채권자취소권의 성질을 가진다. 그런데 신탁법 제8조는 채권자취소권에 관한 법리를 기초로 하면서도 이와 구분되는 요건과 효과를 정하고 있다. 그러므로 이를 해석, 적용함에 있어서는 신탁의 제도적 특수성을 충분히 고려하지 않으면 안 된다. 특히 채권자취소권에서 수익자에 해당하는 지위가 사해신탁에서는 수탁자와 신탁수익자로 분해되는바, 신탁재산의 귀속주체인 수탁자와 신탁재산으로부터의 이익을 향수하는 신탁수익자의 지위를 고려하여 채권자취소권과 구분되는 사해신탁취소권의 요건과 효과를 도출하여야 한다. 각 신탁설정 유형에 따른 사해성, 위탁자의 사해의사 및 수탁자/신탁수익자의 악의와 같은 요건의 충족 여부를 판단함에 있어서, 그리고 수탁자 및/또는 신탁수익자에 대하여 사해신탁의 취소를 소구함에 있어서, 특히 취소와 원상회복의 효과 및 범위를 확정함에 있어서, 신탁의 구조는 중요한 기준이 되는 것이다. 또한 신탁을 중심으로 채권자취소권과 사해신탁취소권 각각이 작동하는 고유한 영역을 파악하고, 양자가 경합하는 경우 이를 규율하는 법리를 규명하여야 한다. 이때 수익자신탁에 있어서 신탁수익자의 보호는 일차적인 기준이 되며, 선의의 신탁채권자의 보호도 소홀히 해서는 안 된다. 향후 민법상 채권자취소권제도의 변화는 사해신탁취소권에도 영향을 미치지 않을 수 없는데, 이에 따른 사해신탁제도의 변화를 가늠하고 입법적인 대안을 모색할 필요가 있다. 이와 더불어 수익권양도청구권과 위탁자, 신탁수익자 또는 수탁자의 연대책임과 같이 현행 신탁법상 사해신탁취소권이 합리적으로 운용되기 위하여 입법적인 해결이 요구되는 규정들에 대한 개선책과 제도의 남용을 방지하기 위한 장치 또한 탐구하여야 할 것이다. The fraudulent transfer can be revoked by the creditor. When a debtor settled a trust as a mean to avoid subjecting his/her assets to creditor’s claim, the trust can also be revoked under the general principle in the Civil Code. However this right of revocation is provided under somewhat different requirements and effects in Article 8 of the Trust Act. Within the limitation period for attacking a fraudulent transfer the creditor of the settlor can revoke the settlement of the trust and restitute the trust property, regardless of trustee’s recognition on the fraudulent transfer. The creditor may revoke it against the trustee only when all the beneficiaries are in bad faith. If not, the right of revocation is permitted only against the bad faith beneficiaries. These intent to protect bona fide beneficiaries as well as trustee. The fundamental features and their characteristic play an vital role on the construction and application of the provision. It is important to keep a balance between the need to maintain the debtor’s property for the creditor’s interest, the freedom to dispose of debtor’s own property, and the need to ensure the transaction security too. But there is considerable uncertainty in the provision regarding the claim to transfer a beneficiary right and the joint liability of settlor and beneficiary or trustee. This article tries to propose the reasonable construction corresponding to trust scheme as well as the policy of the trust law in comparison with the general right of revocation. In addition it suggests the legislative adjustment to prevent the fraudulent use of trust.

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.

대학의 교실수업에서 이러닝시스템 이용의 활성화에 관한 연구: 사회적, 기술적, 개인적 특성

최수정 ( Su Jeong Choi ) 한국정보시스템학회 2008 情報시스템硏究 Vol.17 No.4