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您的检索式：作者名="Se Woon Choi"
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| 1 | Optimal seismic retrofit model for steel moment resisting frames with brittle connections显示文摘Based on performance-based seismic engineering, this paper proposes an optimal seismic retrofit model for steel moment resisting frames(SMRFs) to generate a retrofit scheme at minimal cost. To satisfy the acceptance criteria for the Basic Safety Objective(BSO) specified in FEMA 356, the minimum number of upgraded connections and their locations in an SMRF with brittle connections are determined by evolutionary computation. The performance of the proposed optimal retrofitting model is evaluated on the basis of the energy dissipation capacities, peak roof drift ratios, and maximum interstory drift ratios of structures before and after retrofitting. In addition, a retrofit efficiency index, which is defined as the ratio of the increment in seismic performance to the required retrofitting cost, is proposed to examine the efficiencies of the retrofit schemes derived from the model. The optimal seismic retrofit model is applied to the SAC benchmark examples for threestory and nine-story SMRFs with brittle connections. Using the retrofit efficiency index proposed in this study, the optimal retrofit schemes obtained from the model are found to be efficient for both examples in terms of energy dissipation capacity, roof drift ratio, and maximum inter-story drift ratio. | Hyo Seon Park Se Woon Choi Byung Kwan Oh | 2018 | Earthquake Engineering and Engineering Vibration2018，17，4： | 0 |
| 2 | Ectopic peritoneal paragonimiasis mimicking tuberculous peritonitis:A care report显示文摘BACKGROUND The most common site of paragonimiasis is in the lungs.The migratory route passes through the duodenal wall,peritoneum,and diaphragm to the lungs;thus,the thoracic cavity and central nervous system,as well as the liver,intestine,and abdominal cavity may be involved.Here,we present a case of intraperitoneal paragonimiasis without other organ involvement,mimicking tuberculous peritonitis.CASE SUMMARY A 57-year-old man presented with recurrent abdominal pain for 4 wk.Physical examination revealed tenderness in the right lower quadrant.Laboratory findings showed complete blood counts within the normal range without eosinophilia.Multiple reactive lymph nodes and diffuse peritoneal infiltration were noted on abdominal computed tomography(CT).There were no abnormalities on chest CT or colonoscopy.Intraoperative findings of diagnostic laparoscopy for the differential diagnosis of tuberculous peritonitis and peritoneal carcinomatosis included multiple small whitish nodules and an abscess in the peritoneum.Pathological reports confirmed the presence of numerous eggs of Paragonimus westermani(P.westermani).A postoperative serum enzyme-linked immunosorbent assay revealed P.westermani positivity.Persistent and repetitive history-taking led him to retrospectively recall the consumption of freshwater crab.After 3 d of treatment with praziquantel(1800 mg;25 mg/kg),he recovered from all symptoms.CONCLUSION In patients who require diagnostic laparoscopy for the differential diagnosis of tuberculous peritonitis and peritoneal carcinomatosis,repetitive history-taking and preoperative serologic antibody tests against Paragonimus may be helpful in diagnosing intraperitoneal paragonimiasis without other organ involvement. | Jung Woo Choi Chang Min Lee Seong Je Kim Se In Hah Ji Yoon Kwak Hyun Chin Cho Chang Yoon Ha Woon Tae Jung Ok Jae Lee | 2022 | World Journal of Clinical Cases2022，10，16： | 0 |
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