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LISP-BASED SIMULATION FOR EVALUATING DISK SYSTEM
Yoo, Hae Young,Woo, Jin Woon,Cho, Kyung San 단국대학교 통계문제연구소 1990 數學 및 統計硏究 Vol.17 No.-
This paper presents a Lisp-based, event-driven simulation using the list data structure and object-oriented operation for the evaluation of the disk system design. The list structure in the event driven simulation is effectively managed for the parallel operation of independent disks and dynamically maintained at an optimum length as the simulation progresses. In addition, Lisp can manipulate various types of objects without presenting their types or sizes and object-oriented operations are appropriate for handling flexible specifications in the new design case. With the above Lisp approaches, several architectural alternatives of the disk buffer, multipath and disk interleaving for improving the performance are considered in the simulation. This disk system simulation estimates and interprets the performance of the design, and is utilized for the rule-based design guide which diagnoses, analyzes, and guides the design in order to optimize the design under the given workload and constraints of cost and performance.
Yoo Jin Chun,함성일,San Duk Yang,Arang Rhie,박현석 한국유전체학회 2008 Genomics & informatics Vol.6 No.1
We have released five Java Application Programming Interface (API) packages for viewing three-dimensional structures of proteins from the Protein Data Bank. To this end, the user interface of an earlier version has been refactored in an object-oriented fashion, in which refactoring is the process of changing a software system to improve its internal structure, without altering the external behavior. Various GUI design and features have been provided conveniently thanks to the Model- View-Control (MVC) model, which is an architectural pattern used in software engineering. Availability: The source code and API specification can be downloaded from https://sourceforge.net/projects/j3dpsv/.
Helicobacter pylori 감염은 상부위장관 및 대장 병변을 동시에 일으킬 수 있는가?
이진헌,이기성,이자영,김학양,유재영,박충기,김종혁,김용범,장웅기,김성균,김억,서중산 대한소화기내시경학회 2001 Clinical Endoscopy Vol.22 No.1
Background/Aims: Some studies showed the higher prevalence of K. pylori infection in the patients with colon adenoma and carcinoma than control subjects. The association between H. pylori infection and colonic diseases is controversial. We evaluated K. pylori infection rate and the related upper gastrointestinal lesions in the patients with colon polyp and cancer. Methods: Ninety-four subjects, 67 with colonic lesions and 27 without colonic lesions were enrolled. Colon polyp and cancer were confirmed by colonoscopic biopsy or polypectomy. The enrolled subjects were received gastroduodenoscopic examination. K. pylori infection was evaluated serologically and/or with rapid urease test. The fasting serum gastrin level was measured. Results: H. pylori infection rates in the patients with and without colonic lesions were 67.2% and 44.4%, respectively (p$lt;0.05). Upper gastrointestinal lesions were observed in 27 of 67 patients (40.3%) with colonic lesions and in 11 of 27 patients (40.7%) without colonic lesions (p=l.0). Mean levels of serum gastrin with and without colonic lesions were 91.7±31.1 pg/mL and 88.1±37.7 pg/mL, respectively (p=0.15). Conclusions: Our study supports the relationship between H. pylori infection, colorectal neoplasia. Although there was no significant difference, the possibility of the simultaneous presence of upper gastrointestinal lesions in the patients with colorectal polyp and cancer was suggested. But the relationship between serum gastrin and the development of colorectal polyp and cancer was not documented.
Jong-San Chang,Vladislav P. Vislovskiy,박상언,Min-Seok Park,Jin S. Yoo,홍도영 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.11
This work presents that carbon dioxide, which is a main contributor to the global warming effect, could be utilized as a selective oxidant in the oxidative dehydrogenation of ethylbenzene. The dehydrogenation of ethylbenzene over alumina-supported vanadium-antimony oxide catalyst has been studied under different atmospheres such as inert nitrogen, steam, oxygen or carbon dioxide as diluent or oxidant. Among them, the addition of carbon dioxide gave the highest styrene yield (up to 82%) and styrene selectivity (up to 97%) along with stable activity. Carbon dioxide could play a beneficial role of a selective oxidant in the improvement of the catalytic behavior through the oxidative pathway.