• 제목/요약/키워드: LAMS

검색결과 17건 처리시간 0.019초

LAMS와 외부 교육용 콘텐츠간의 통신 메커니즘의 설계 및 구현 (Design and Implementation of Communication Mechanism between External Educational Contents and LAMS)

  • 박찬;정석인;한철동;성동욱;유재수;유관희
    • 한국콘텐츠학회논문지
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    • 제9권3호
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    • pp.361-371
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    • 2009
  • LAMS(learning activity management system)[1]는 웹 검색, 채팅, 포럼, 그룹화와 보드와 같은 학습활동을 효과적으로 설계하고 관리할 수 있는 유용한 도구 중의 하나이다. 비록 LAMS가 e-러닝 콘텐츠를 편리하게 제작할 수 있는 방법을 지원하기 위해 지속적으로 갱신되고 있지만, 플래시, 자바, 비쥬얼 C++ 등과 같은 외부 도구에 의해 만들어진 외부 교육용 콘텐츠(EEC: External Educational Contents)와 통신하기 위한 방법을 아직 제공하고 있지 않다. 웹 환경에서 작동되는 LAMS에서 교육용 콘텐츠로 사용되고 있는 비디오와 동적 콘텐츠 등과 같은 임의의 EEC를 LAMS DB에서 일관성 있게 관리해야 하나, 아직까지 EEC 정보를 LAMS DB에 저장하기 위한 기능 뿐만 아니라 LAMS DB로부터 EEC에 관한 정보를 접근할 수 있는 기능을 제공하고 있지 않다. 본 논문에서는 이러한 문제를 해결하기 위한 LAMS와 EEC와 통신할 수 있는 메카니즘을 제안한다. 특히 이 기법은 LAMS에서 불가능한 다양한 외부 교육용 학습 자료를 편리하게 관리할 수 있고, 또한 평가와 같은 목적으로 만들어진 외부 교육용 콘텐츠를 교육적으로 활용하여 다양한 통계 자료 생성을 가능하게 한다. 따라서 제안된 통신 메카니즘을 통하여 LAMS를 이용하는 교수자가 보다 더 다양한 교육용 콘텐츠를 제작 관리할 수 있다.

Coaxial plastic stent placement within lumen-apposing metal stents for the management of pancreatic fluid collections: a systemic review and meta-analysis

  • Jad AbiMansour;Veeravich Jaruvongvanich;Saran Velaga;Ryan Law;Andrew C. Storm;Mark Topazian;Michael J. Levy;Ryan Alexander;Eric J. Vargas;Aliana Bofill-Garica;John A. Martin;Bret T. Petersen;Barham K. Abu Dayyeh;Vinay Chandrasekhara
    • Clinical Endoscopy
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    • 제57권5호
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    • pp.595-603
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    • 2024
  • Background/Aims: Coaxial placement of double pigtail plastic stents (DPPS) through lumen-apposing metal stents (LAMSs) is commonly performed to reduce the risk of LAMS obstruction, bleeding, and stent migration when used for the drainage of pancreatic fluid collections (PFCs). A systematic review and meta-analysis were performed to compare the outcomes of LAMS alone and LAMS with coaxial DPPS placement in the management of PFCs. Methods: A systematic review was conducted to identify studies comparing LAMS and LAMS/DPPS for PFC drainage. Primary outcomes included the rate of clinical success, overall adverse events (AEs), bleeding, infection, occlusion, and stent migration. The pooled effect size was summarized using a random-effects model and compared between LAMS and LAMS/DPPS by calculating odds ratios (ORs). Results: Nine studies involving 709 patients were identified (338 on LAMS and 371 on LAMS/DPPS). LAMS/DPPS was associated with a reduced risk of stent obstruction (OR, 0.59; p=0.004) and infection (OR, 0.55; p=0.001). No significant differences were observed in clinical success (OR, 0.96; p=0.440), overall AEs (OR, 0.57; p=0.060), bleeding (OR, 0.61; p=0.120), or stent migration (OR, 1.03; p=0.480). Conclusions: Coaxial DPPS for LAMS drainage of PFCs is associated with a reduced risk of stent occlusion and infection; however, no difference was observed in the overall AE rates or bleeding.

Design of Learning Courses of Sorting Algorithms using LAMS

  • Yoo, Jae-Soo;Seong, Dong-Ook;Park, Yong-Hun;Lee, Seok-Jae;Yoo, Kwan-Hee;Cho, Ja-Yeon
    • International Journal of Contents
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    • 제4권1호
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    • pp.20-25
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    • 2008
  • The development of communication technology and the spread of computers and internet have affected to the field of education. In this paper, we design a learning process with LAMS to make the new education environment which is required in an information age. We made the learning environment with LAMS which develops the learner's algorithmic thinking faculty on some sorting algorithm, especially such as selection sort, bubble sort and insertion sort algorithm. In addition, we analyse the effectiveness of the learning environment. The designed contents were applied to elementary school students' learning and a questionnaire survey was conducted after a learning course. The research of the questionnaire shows that the learning system using LAMS motivates a learner for learning and provides a convenient learning environment.

Advances in self-expandable metal stents for endoscopic ultrasound-guided interventions

  • Dong Kee Jang;Dong Wook Lee;Seong-Hun Kim;Kwang Bum Cho;Sundeep Lakhtakia
    • Clinical Endoscopy
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    • 제57권5호
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    • pp.588-594
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    • 2024
  • Endoscopic ultrasound (EUS)-guided interventions have evolved rapidly in recent years, with dedicated metal stents playing a crucial role in this process. Specifically, the invention of biflanged short metal-covered stents, including lumen-apposing metal stents (LAMS), and modifications in a variety of tubular self-expandable metal stents (SEMS), have led to innovations in EUS-guided interventions. LAMS or non-LAMS stents are commonly used in the EUS-guided drainage of pancreatic fluid collections, especially in cases of walled-off necrosis. Additionally, LAMS is commonly considered for drainage of the EUS-guided gallbladder or dilated common bile duct and EUS-guided gastroenterostomy. Fully or partially covered tubular SEMS with several new designs are being considered for EUS-guided biliary drainage. This review focuses on advances in SEMS for EUS-guided interventions and discusses related research results.

연구윤리를 위한 교육콘텐츠 및 교육시스템 구축방법 (Educational contents and implementation procedures of the training system for research ethics)

  • 이종기;김기주
    • 한국산업정보학회논문지
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    • 제15권5호
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    • pp.235-246
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    • 2010
  • 황우석의 연구윤리 부정사건 이후, 국내에서는 아직도 연구윤리에 대해 많은 문제점을 갖고 있다. 국내의 연구윤리교육 확산을 위해서는 연구윤리와 관련된 컨텐츠를 준비하고 이와 같은 컨텐츠를 교육시스템을 통하여 학습하고 실천함이 중요하다. 본 연구에서는 연구윤리의 범위, 국내에서의 연구부정행위에 대한 사례 및 미국에서의 연구윤리 교육사례를 통해 두 국가에서의 연구자 연구윤리교육의 내용과 방법을 살펴보고, 학습활동관리시스템(LAMS, learning activity management systems)을 활용하여 연구윤리교육을 운영하기 위한 방법을 살펴보고자 한다. 그리고 본 연구의 목적은 연구윤리 교육프로그램에 필요한 연구윤리 컨텐츠의 개발과 이러한 컨텐츠를 각 급 학교와 연구 기관에서 활용하기 위하여 학습활동관리시스템인 LAMS 시스템을 활용한 연구윤리 교육시스템을 구축하는 방법을 제시하고자 함뿐만 아니라, 이를 통하여 연구윤리 의식이 확산되도록 하기 위함이다.

A remnant choledochal cyst after choledochal cyst excision treated with a lumen-apposing metal stent: a case report

  • Bo Kyung Kim;Jung Won Chun;Sang Hyub Lee;Ji Kon Ryu;Yong-Tae Kim;Woo Hyun Paik
    • Clinical Endoscopy
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    • 제55권4호
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    • pp.564-569
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    • 2022
  • A lumen-apposing metal stent (LAMS) is a saddle-shaped stent with large flanges at both ends, thereby preventing stent migration and helping with approximation of the adjacent structures. We report the case of a 25-year-old female with remnant choledochal cyst which was successfully treated with LAMS after initial treatment failure with a plastic stent. Although complete excision of the cyst is the definite treatment of choledochal cysts, endoscopic ultrasonography-guided cystoduodenostomy can be considered in cases wherein surgery is not feasible and dysplasia is not present. LAMS may be preferred to plastic stents for effective resolution of remnant choledochal cyst and prevention of ascending infection.

공중 무선랜에서의 이중요소 인증된 키교환 프로토콜 (Two-factor Authenticated and Key Exchange(TAKE) Protocol in Public Wireless LANs)

  • 박영만;박상규
    • 정보보호학회논문지
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    • 제13권4호
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    • pp.29-36
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    • 2003
  • 본 논문에서, 우리는 이중 요소 인증과 사전 계산(precomputation)을 사용하여 공중 무선랜(Public Wireless LAMs)에서 노트북뿐만 아니라 PDA에도 적용할 수 있는 새로운 이중 요소 인증된 키교환(TAKE) 프로토콜을 제안한다. 이 프로토콜은 상호 인증, 세션키 설정, 사용자 신원 보호, 그리고 실용적인 half forward secrecy를 제공한다. 프로토콜 수행중에 가입자 무선단말에 필요한 연산량은 한번의 대칭키 암호와 다섯번의 해쉬함수 뿐이다.

LAMS를 이용한 자료 정렬 콘텐츠 설계 및 구현 (Design and Implementation of Data Sorting Contents Using LAMS)

  • 이미숙;이석재;조자연;유재수;유관희
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2007년도 추계 종합학술대회 논문집
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    • pp.903-907
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    • 2007
  • 본 논문의 연구 목적은 공개 학습활동관리시스템 종류 중 하나 인 LAMS를 이용하여 학습자들의 알고리즘적인 사고력을 키우며 다양한 학습 활동을 통하여 학습에 대한 흥미를 느끼게 해주는 데 있다. LAMS는 다양한 학습 환경에서 교수자가 설계한 대로 학습자가 학습할 수 있도록 시각적인 학습 디자인 제작 환경을 제공하며 또한 순차적인 학습 환경을 제공한다. 본 논문에서는 학습자의 논리적인 사고를 향상시키기 위해 컴퓨터의 기본이 되는 데이터 정렬 알고리즘을 적용하였다. 설계한 콘텐츠를 초등학생을 대상으로 학습을 수행 한 후 설문조사를 실시한 결과 대다수의 응답자들이 긍정적인 반응을 보였다. 반면 데이터 정렬 알고리즘뿐만 아니라 컴퓨터와 관련된 다양한 종류의 콘텐츠들이 제공 되었으면 좋겠다라고 응답한 응답자도 있었다. 향후에는 초 중등 교과 과정에서 컴퓨터 교육에 대한 콘텐츠와 개념적인 원리가 추가, 수정되어야 할 필요가 있으며, 또한 대중적인 학습관리시스템을 만들기 위해 노력할 것이다.

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No difference in outcomes with 15 mm vs. 20 mm lumen-apposing metal stents for endoscopic ultrasound-guided gastroenterostomy for gastric outlet obstruction: a meta-analysis

  • Shyam Vedantam;Rahil Shah;Sean Bhalla;Shria Kumar;Sunil Amin
    • Clinical Endoscopy
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    • 제56권3호
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    • pp.298-307
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    • 2023
  • Background/Aims: We compared outcomes between use of 15 vs. 20 mm lumen-apposing metal stents (LAMSs) in endoscopic ultrasound-guided gastroenterostomy (EUS-GE) for gastric outlet obstruction. Methods: Databases were queried for studies that used LAMS for EUS-GE to relieve gastric outlet obstruction, and a proportional meta-analysis was performed. Results: Thirteen studies were included. The 15 mm and 20 mm LAMS had pooled technical success rates of 93.2% (95% confidence interval [CI], 90.5%-95.2%) and 92.1% (95% CI, 68.4%-98.4%), clinical success rates of 88.6% (95% CI, 85.4%-91.1%) and 89.6% (95% CI, 79.0%-95.1%), adverse event rates of 11.4% (95% CI, 8.1%-15.9%) and 14.7% (95% CI, 4.4%-39.1%), and reintervention rates of 10.3% (95% CI, 6.7%-15.4%) and 3.5% (95% CI, 1.6%-7.6%), respectively. Subgroup analysis revealed no significant differences in technical success, clinical success, or adverse event rates. An increased need for reintervention was noted in the 15 mm stent group (pooled odds ratio, 3.59; 95% CI, 1.40-9.18; p=0.008). Conclusions: No differences were observed in the technical, clinical, or adverse event rates between 15 and 20 mm LAMS use in EUS-GE. An increased need for reintervention is possible when using a 15 mm stent compared to when using a 20 mm stent.

Endoscopic ultrasound-guided gastrojejunostomy with a direct technique without previous intestinal filling using a tubular fully covered self-expandable metallic stent

  • Hakan Senturk;Ibrahim Hakki Koker;Koray Kochan;Sercan Kiremitci;Gulseren Seven;Ali Tuzun Ince
    • Clinical Endoscopy
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    • 제57권2호
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    • pp.209-216
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    • 2024
  • Background/Aims: Endoscopic ultrasonography-guided gastrojejunostomy is a minimally invasive method for the management of gastric outlet obstruction. Conventionally, a lumen-apposing metal stent (LAMS) is used to create an anastomosis. However, LAMS is expensive and not widely available. In this report, we described a tubular fully covered self-expandable metallic stent (T-FCSEMS) for this purpose. Methods: Twenty-one patients (15 men [71.4%]; median age, 66 years; range, 40-87 years) were included in this study. A total of 19 malignant (12 pancreatic, 6 gastric, and 1 metastatic rectal cancer) and 2 benign cases were observed. The proximal jejunum was punctured with a 19 G needle. The stomach and jejunum walls were dilated with a 6 F cystotome, and a 20×80 mm polytetrafluoroethylene T-FCSEMS (Hilzo) was deployed. Oral feeding was initiated after 12 to 18 hours and solid foods after 48 hours. Results: The median procedure time was 33 minutes (range, 23-55 minutes). After two weeks, 19 patients tolerated oral feeding. In patients with malignancy, the median survival time was 118 days (range, 41-194 days). No serious complications or deaths occurred. All patients with malignancy tolerated oral food intake until they expired. Conclusions: T-FCSEMS is safe and effective. This stent should be considered as an alternative to LAMS for gastric outlet obstruction.