• 전기학회논문지
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• 제61권1호
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• pp.148-154
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• 2012

For a successful checkpointing strategy, we should place checkpoints so as to optimize fault-tolerance capability of real-time systems. This paper presents a novel scheme of checkpoint placement for real-time systems with periodic multi-tasks. Under the influence of transient faults, multi-tasks are scheduled by the Rate Monotonic (RM) algorithm. The optimal checkpoint intervals are derived to maximize the probability of task completion. In particular, this paper is concerned about the general case that the deadline of a task is longer than the period. Compared with the special condition that the deadline is equal to or less than the period, this general case causes a more complicate test procedure for schedulability of the RM algorithm with respect to a given set of checkpoint re-execution vectors. The probability of task completion is also derived in a more complex form. A case study is given to show the applicability of the proposed scheme.

• Educational Technology International
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• 제19권1호
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• pp.123-151
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• 2018

This study aims to examine the effects of self-directed learning readiness (SDLR) on academic performance and the perceived usefulness for each elements of flipped learning. Based on their SDLR scores, 69 students were assigned to a high SDLR group and a low SDLR group. Academic performance was measured by the completion rate of a pre-class online learning and the final exam score, and perceived usefulness for each element of flipped learning was measured by a survey designed by the researcher. For academic performance, the high SDLR group showed a significantly higher completion rate than the low SDLR group, but no significant difference was observed in their final exam scores. Students in the high SDLR group perceived in-class student-centered activities as more useful than those in the low SDLR group. Additional qualitative analyses indicated that students needed more support from instructors and well-prepared peers. Finally, this study suggested that more examination on the various learning characteristics that may influence the effectiveness of flipped learning should be done.

• 직업교육연구
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• 제35권6호
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• pp.39-63
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• 2016

이 연구의 목적은 실업자가 훈련프로그램을 수료한 이후에 실업자의 실제적인 취업률과 고용유지율에 영향을 미치는 변인을 구명하는 데 있었다. 이를 위해 2012년 훈련서비스 품질 등에 관한 설문조사에 응답한 국가기간 전략산업직종(이하 '기간전략') 훈련생(889명) 중에서 최종적으로 수료한 훈련생(840명)의 훈련과정 종료 후 2년 이상의 고용보험 가입여부 및 가입기간 등에 관한 자료를 활용하여 생존분석(생명표 분석, Cox 회귀모형 분석)을 실시하였다. 이 연구의 주요 결과는 첫째, 수료 후 취업률이 가장 높은(36.8%) 시기는 3개월 이내이고, 전체 훈련생의 50% 이상이 취업한 시기는 6개월 이내로 나타났다. 수료 후 1년과 2년이 경과된 시점까지도 지속적으로 취업이 발생하고 있지만, 시간이 지날수록 취업률은 점점 감소하는 것으로 나타났다. 둘째, 수료 후 취업률에 영향을 미치는 변인은 훈련서비스 품질 중 교수역량(-)과 고용가능성(+)으로, 교수역량을 낮게 인식할수록, 자신의 고용가능성을 높게 인식할수록 취업확률이 높게 나타났다. 셋째, 취업 후 고용상실률이 가장 높은(각 22.0%, 22.3%) 시기는 3개월 이내와 3~6개월 이내이고, 전체 훈련생의 50% 이상이 고용보험을 상실한 시기는 8.8개월 이내로 나타났다. 넷째, 취업 후 고용유지율에 영향을 미치는 변인은 훈련서비스 품질 중 교사-학생관계(+), 학우관계(+), 훈련만족도(+)로, 교사-학생관계와 학우관계의 품질을 높게 인식할수록, 훈련만족도를 높게 인식할수록 취업 후 고용유지확률이 높게 나타났다.

• 대한두경부종양학회지
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• 제37권2호
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• pp.25-31
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• 2021

Background/Objectives: Although thyroid lobectomy recently is considered as sufficient for low-risk papillary thyroid carcinoma (PTC), completion thyroidectomy is required due to the insufficiency of the preoperative evaluation. The aim of this study was to investigate recurrence rate and disease free survival depending on the gross extrathyroidal extension (gETE) or the number of metastatic lymph node identified in patients with PTC. Materials & Methods: We assessed 3373 patients with PTC who underwent lobectomy at Seoul St. Mary's Hospital (Seoul, Korea) between January 2009 and December 2014. Clinicopathological characteristics and long-term surgical outcomes were retrospectively analyzed through complete chart reviews. The mean follow-up duration was 97.1 ± 21.4 months. Results: The rate of recurrence was higher in gETE group (1.8% vs. 6.0%, p=0.004), leading to decreased disease free survival in Kaplan-Meier analysis (log-rank p<0.001). N1 group (n=1389) was analyzed into two groups whether the number of positive nodes is more than 5 or less. For the group of the more metastatic nodes, the recurrence rate higher compared to the other group (3.0% vs. 9.3%, p<0.001). DFS was longer in the group that had lesser metastatic nodes (log-rank p<0.001). However, in terms of N1 group over 1cm (n=492), No statistical difference was observed according to the number of positive lymph nodes (4.5% vs. 9.1%, p=0.092) Conclusion: When it comes to node positive PTC, Despite the number of positive lymph nodes was over 5, follow-up with no further surgery can be an option.

• 한국항만경제학회지
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• 제27권1호
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• pp.137-154
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• 2011

본 연구의 목적은 합리적인 Trigger Rule에 따른 최적의 서비스 수준을 제시할 수 있는 인천항의 시설확보율의 검토를 통해 향후 인천신항의 시기적절한 항만개발을 위한 여건을 조성함과 아울러 향후 우리나라에서 인천항의 위상확보와 역할방향에 대해 정책적 제언을 제시하는 것을 목적으로 하였다. 연구결과에 따르면 국토부 예측치 보다 2001~2009년 까지의 연평균 증가율을 이용하여 트리거룰을 적용한 경우 2년 앞당겨 2021년까지 18개 선석 조기완공이 가능할 것으로 나타났으며 이를 위해 인천신항을 포함한 3포트 정책, 고부가가치 환적화물 유치, 인천신항 조기 완공 여건 조성 등을 제언하였다.

• 한국소프트웨어감정평가학회 논문지
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• 제17권2호
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• pp.11-17
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• 2021

본 연구에서는 감정사례 및 판례를 분석하여, 기존 소프트웨어 완성도 감정으로 분류되어 수행된 완성도감정, 기성고감정, 하자감정 및 비용감정의 문제점을 적시하고, 그 해결 방안을 제시한다. 판례와 법률적 관점에서 완성도와 기성고율은 큰 차이를 가지고 있다. 완성도는 개발프로세스가 종료된 소프트웨어를 대상으로 전제하는 반면, 기성고율 감정은 미완성된 소프트웨어의 개발진척도를 평가하기 때문이다. 종종 소프트웨어 기성고와 관련된 판례에서는 소프트웨어 공학 개발 절차에 따른 단계별 가중치를 인정하여 전체 기성고 또는 완성도를 산정하는 것을 볼 수 있는데, 감정에서는 대부분 기능의 구현-작동여부 만을 완성도 비율 산정의 척도로 삼고 있는 문제도 존재한다. 또한 기존 소프트웨어 완성도 감정사례에서 다루지 않았던 문제 중 하나는 소프트웨어 하자에 대한 책임 소재 분석 및 감정이 언급되지 않고 있는데 반하여, 판례에서는 분쟁이 발생한 원인을 찾아 책임소재를 다투고 있다. 본 논문에서는 위 제기된 문제를 체계적으로 분류하여 소프트웨어 완성도감정과 소프트웨어 기성고감정을 분리할 것을 제안하고 감정 방안을 제시한다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권8호
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• pp.4835-4838
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• 2013

Background: We compared treatment completion rates and safety of docetaxel and cyclophosphamide sixcycle therapy (TC6) with docetaxel followed by 5FU, epirubicin and cyclophosphamide (T-FEC) therapy in Japanese patients with human epidermal growth factor receptor 2 (HER2)-negative breast cancer. Materials and Methods: We administered TC6 q3w or T-FEC q3w to HER2-negative breast cancer patients. The primary endpoint of this trial was toxicity. As second endpoints, the treatment completion rate and relative dose intensity were evaluated. Results: The TC6 and T-FEC group consisted of 22 and 21 patients, respectively. Concerning hematological toxicity, grade 3 or higher adverse reactions included neutropenia and febrile neutropenia. As non-hematological adverse events, exanthema and peripheral neuropathy were frequently reported in the TC6 group, whereas more patients of the T-FEC group reported nausea and vomiting. In TC6, the treatment completion rate was 86.4% and the relative dose intensity of docetaxel was 93.2%. In T-FEC, the values were 95.2% and 98.9%, respectively. Conclusions: These results suggest that TC6 is tolerable in Japanese, and that this regimen can also be performed in outpatient clinics. However, with the TC6 regimen, the compliance was slightly lower than with the T-FEC regimen, and supportive therapy needs to be managed appropriately.

• Asian-Australasian Journal of Animal Sciences
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• 제14권9호
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• pp.1267-1271
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• 2001

The objective of this study was to examine the significance of feeding induced hypovolemia (decrease in plasma volume) in controlling the feed intake of goats fed on dry feed. In order to alleviate hypovolemia with feeding, a 2 h intravenous infusion (16-18 ml/min) of artificial saliva or mannitol solution was begun 1 h prior to feeding and continued until 1h after the start of the 2 h feeding period. In comparison with no infusion (NI), cumulative feed intake was increased by 41% with artificial saliva infusion (ASI) and by 45% with mannitol infusion (MI) by the completion of the 2 h feeding period. Both infusion treatments (ASI and MI) were significantly different (p<0.05) from the NI treatment in terms of the cumulative feed intake. The cumulative feed intake between the ASI and MI treatments was not significantly different (p>0.05). No infusion treatment (NI) had the lowest cumulative feed intake (929 g DM), whereas MI had the highest (1345 g DM), after completion of the 2 h feeding period. Generally, infusion treatments also increased the rate of eating at all time points after feeding was commenced. Following the first 30 mins of feeding, the rate of eating decreased sharply, and subsequently declined gradually in all treatments. Compared to the NI, both ASI and MI significantly (p<0.05) decreased thirst level (water intake for 30 mins after the completion of the 2 h feeding period) by approximately 13%. However, the thirst level caused by ASI and MI was not significantly different (p>0.05). Both ASI and MI decreased the plasma concentrations of osmolality and total protein, and hematocrit at 1 h after infusion. The results suggested that the thirst sensation in the brain could be produced by feeding induced hypovolemia. Moreover, the results indicate that hypovolemia is one of the factors controlling the feed intake of goats fed on dry feed.

• 대한두개안면성형외과학회지
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• 제24권5호
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• pp.211-217
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• 2023

Background: Oral cavity cancers, the second most common type in India, are responsible for 10% of the overall cancer burden. With a recurrence rate of 30% to 40% and a 5-year survival rate of 50%, these malignancies account for substantial morbidity and mortality. Despite advances in treatment modalities, survival rates following treatment completion have not improved significantly. The present study aimed to establish specific epidemiological and pathological factors responsible for recurrence after treatment completion in buccal mucosa cancers. Methods: A retrospective analysis of the data of 116 patients treated for biopsy-proven cancers of the buccal mucosa was undertaken 1 year after treatment completion. Factors such as age, sex, education, lymphovascular invasion, extranodal extension (ENE), perineural invasion, depth of invasion, and pathological margin status were compared between patients who presented with recurrence and those who did not. Statistical significance was set at p< 0.05. Results: Of the 116 patients, 40 (34.5%) developed a recurrent disease within 1 year. The mean age of the study population was 43.3 years, and males constituted 91.4% of the included patients. Ipsilateral buccal mucosa was the commonest site of disease recurrence. Neck node metastasis, ENE, and margins of resection < 5 mm were significantly related to the recurrence of disease. However, surprisingly, lymphovascular invasion, perineural invasion, and depth of invasion > 10 mm did not show statistically significant associations. Conclusion: Neck node metastasis, ENE, and margins of resection < 5 mm were the histopathological factors associated with recurrence in cancers of the buccal mucosa.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2007년도 춘계학술대회
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• pp.373-379
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• 2007

The purpose of this study is to examine the level of knowledge adequacy of semiconductor subjects of university. The sample was 287 graduates, graduated Bachelor degree in semiconductor within recently 5 years. Analyzing the level of knowledge adequacy, we could assure that the completion rate of major semiconductor subjects is about 40% and the rate of their knowledge adequacy is approximately 35%.