• 디지털융복합연구
• /
• 제10권6호
• /
• pp.141-152
• /
• 2012

본 연구는 컨버전스 유형별 비즈니스모델 개발을 위한 혁신도구 비교 연구이다. 먼저 문헌고찰을 통하여 컨버전스 유형, 비즈니스 모델, 혁신도구에 대한 기존연구를 학습하고. 이를 근거로 컨버전스 환경 하에서 혁신적 비즈니스모델을 개발하기 위해 혁신도구를 이용한 비즈니스모델 개발 개념인 컨버전스-비즈니스-혁신도구 큐브(CBI Cube) 모형을 개발하였다. 이 개념의 구체화를 위해 전문가집단을 대상으로 한 델파이(DelPhi)기법과 AHP기법을 적용하여 CBI Cube 모형의 구성인자를 도출하고 비즈니스모델 개발을 위한 혁신도구의 상대적 우선순위를 비교하였다. 본 연구를 통해 기존 비즈니스모델의 벤치마킹이나 단순 모방의 수준을 넘어 가치혁신형 비즈니스 모델의 개발이 가능하게 되어 혁신 제품 서비스의 개발 및 혁신 시장개발에 보다 쉽게 접근할 수 있게 될 것을 기대한다.

• 전자공학회논문지S
• /
• 제35S권11호
• /
• pp.19-27
• /
• 1998

차세대 셀룰라 이동통신 시스템은 기지국의 소형화와 서로 다른 크기의 기지국의 복합형태인 계층구조 셀룰라 형태를 가지게 되는데 이에 따른 시스템의 컨트롤은 이동국의 정확한 위치와 속도에 관한 추정을 전제로 한다[13]. 본 논문에서는 지금까지 연구되어온 이동국의 위치 추정 기법인 AOA(Angle of Arrival)와 TOA(Time of Arrival) 및 TDOA(TIme Difference of Arrival)의 방법을 설명하고 그 문제점을 분석하였고, 반사와 회절이 심하여 이동국의 위치 및 속도 추정이 어려운 마이크로셀 환경에서는 서비스 지역내 경로손실 값의 이산 지역 데이터 베이스를 이용하여 이동국의 위치를 추정하는 방법을 제안하였다. 속도의 추정은 위치의 추정치로부터 시간에 대한 변화값으로 얻었다. 오차를 최소화하기 위하여 시스템의 Causality를 만족하는 범위 안에서 이동평균(Moving Average) 방법의 Smoothing을 적용하여 그 성능을 개선하였다. 또한 이산지역 데이터 베이스의 탐색지역을 줄이는 방법을 제안함으로 시스템의 구현을 간단하게 할 수 있는 방안을 제시하였다.

• Asian Pacific Journal of Cancer Prevention
• /
• 제13권11호
• /
• pp.5517-5523
• /
• 2012

Purpose: To evaluate the diagnostic accuracy of ultrasonograph and fine-needle aspiration cytologic examination (USG-FNAC) in the staging of axillary lymph node metastasis in breast cancer patients.Methods: We conducted an electronic search of the literature addressing the performance of USG-FNAC in diagnosis of axillary lymph node metastasis in databases such as Pubmed, Medline, Embase, Ovid and Cochrane library. We introduced a series of diagnostic test indices to evaluate the performance of USG-FNAC by the random effect model (REM), including sensitivity, specificity, likelihood ratios, and diagnostic odds ratios and area under the curve (AUC). Results: A total of 20 studies including 1371 cases and 1289 controls were identified. The pooled sensitivity was determined to be 0.66 (95% CI 0.64-0.69), specificity 0.98 (95% CI 0.98-0.99), positive likelihood ratio 22.7 (95% CI 15.0-34.49), negative likelihood ratio 0.32 (95% CI 0.25-0.41), diagnostic OR 84.2 (95% CI 53.3-133.0). Due to the marginal threshold effect found in some indices of diagnostic validity, we used a summary SROC curve to aggregate data, and obtained a symmetrical curve with an AUC of 0.942. Conclusion: The results of this meta-analysis indicated that the USG-FNAC techniques have acceptable diagnostic validity indices and can be used for early staging of axillary lymph node in breast cancer patients.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권19호
• /
• pp.8361-8366
• /
• 2014

This meta-analysis was performed to assess the implementation effects of clinical pathways in patients with gastrointestinal cancer. A comprehensive search was conducted in the Cochrane Library, PubMed, EMBASE, Web of Science and Chinese Biomedical Literature Database (from inception to May 2014). Selection of studies, assessing risk of bias and extracting data were performed by two reviewers independently. Outcomes were analyzed by fixed-effects and random-effects model meta-analysis and reported as mean difference (MD), standardized mean difference (SMD) and odds ratio (OR) with 95% confidence intervals (CI). The Jadad methodological approach was used to assess the quality of included studies and the meta-analysis was conducted with RevMan 5.1 software. Nine citations (eight trials) involving 642 patients were included. The aggregate results showed that a shorter average length of stay [MD = -4.0; 95% CI (-5.1, -2.8); P < 0.00001] was observed with the clinical pathways as compared with the usual care. A reduction in inpatient expenditure [SMD = -1.5; 95% CI (-2.3, -0.7); P = 0.0001] was also associated with clinical pathways, along with higher patient satisfaction [OR = 4.9; 95% CI (2.2, 10.6); P < 0.0001]. Clinical pathways could improve the quality of care in patients with gastrointestinal cancer, as evidenced by a significant reduction in average length of stay, a decrease in inpatient expenditure and an improvement in patient satisfaction. Therefore, indicators and mechanisms within clinical pathways should be a focus in the future.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권19호
• /
• pp.8271-8277
• /
• 2014

Aims: Apparent diffusion coefficient (ADC) values of nodes in diffusion-weighted imaging (DWI) are widely used in differentiating metastatic from non-metastatic lymph nodes. The purpose of this meta-analysis was to demonstrate whether DWI could contribute to the precise diagnosis of breast cancer (BC) with and without lymph node metastasis (LNM). Materials and Methods: English and Chinese electronic databases were searched for relevant studies followed by a comprehensive literature search. Two reviewers independently assessed the methodological quality of the included trials based on the quality assessment of diagnostic accuracy studies (QUADAS). Summary odds ratios (ORs) and corresponding 95% confidence intervals (95% CIs) were calculated. Results: Final analysis of 624 BC subjects (patients with LNM = 254, patients without LNM = 370) were incorporated into the current meta-analysis from 9 eligible cohort studies. Combined ORs of ADCs suggested that ADC values in BC patients without LNM were higher than in patients with LNM (OR=0.56, 95%CI: 0.11-1.01, p=0.015). Subgroup analysis stratified by country indicated a low ADC value in BC patients with LNM rather than those without LNM among Chinese (OR=1.27, 95%CI: 0.89-1.66, p<0.001), Italians (OR=0.75, 95%CI: 0.13-1.38, p=0.018), and Egyptians (OR=1.27, 95%CI: 0.71-1.84, p<0.001). The findings of subgroup analysis by MRI machine type revealed that ADC values from diffusion MRI may be potential diagnostic indicators for BC using Non-Philips 1.5T (OR=1.10, 95%CI: 0.84-1.36, p<0.001). Conclusions: The main findings of our meta-analysis demonstrated that increased signal intensity on DWI and decreased signals on ADC are helpful in diagnosis of BC patients with or without LNM. DWI could therefore be an important imaging investigation in patients suspected of BC.

• 건축역사연구
• /
• 제7권3호
• /
• pp.87-105
• /
• 1998

Surveying the literature of architecture since the nineteenth century, one can identify two dominant but problematic attitudes, among several, that pursue the task of defining what modern architecture is and should be. The first is the search for meaning and the second is the pursuit of form. This study, following Michel Foucault, asserts that the dual formation of meaning and form is a historical product of modernity and belies architecture's uncritical dependence on language since the nineteenth century. This study is a critique and historical analysis of this pernicious reliance, and constitutes a first step towards thinking of alternative relations between 'words and architecture' in the modern world. In reconstructing this problematic, the paper has called on Foucault's seminal The Order of Things. The study follows his construction of the Renaissance, the Classical and the Modern episteme, and in brief fashion, reconstructs the relation between language and architecture in each episteme. In analysing the Modern, the study focuses on Hegel's Lectures on Aesthetics. Hegel placed architecture in a genre hierarchy within which architecture, because of its material basis, was fundamentally limited in its ability to express the Spirit. For Hegel it was, among the arts, poetic language, and beyond art, the language of philosophy, through which the Absolute Spirit could be atttained. Much of post-nineteenth century architecture has remained within the shadow of Hegel, where architecture's materiality is perceived to be a burden, and in order to secure its relevance in modern society, architecture was deemed to pursue the role of language. As the most recent and sophisticated example of architecture's pursuit of form, the paper analyses the work of Peter Eisenman. Though Eisenman's theoretical writings are replete with post-Hegelian rhetoric, his architecture remains dependent upon the model of language, albeit a structuralist one. The paper concludes that ultimately, the pursuit of meaning and form is unable to face the crucial issue of value in modernity. While the former decides to easily what it is, the latter evades the issue itself. The second installment of this ongoing study will pursue a third possibility alluded to by Foucault, where language remains silent, pointing only to its 'ponderous' material existence.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• 제16권2호
• /
• pp.173-182
• /
• 2005

소아기 발병 정신분열병(COS)은 비록 흔하지는 않지만 성인 발병 정신분열병에 비해 보다 동질적인 집단이며 질병의 진행과정을 추적할 수 있다는 면에서 정신분열병 연구자들의 관심의 대상이 된다. COS 환자에대한 기존의 연구 결과들은 소아에서도 성인 진단기준에 의거한 구조적면담을 통해 객관적으로 타당성 있는 정신분열병 진단이 가능하다는 것이다. 또한 소아와 성인 발병 정신분열병이 동일한 임상양상과 질병 진행과정을 보이며 생물학적 여러분야(신경심리, 신경생리, 뇌 구조, 뇌 생화학, 유전 및 염색체)의 연구결과들 역시 성인 발병 정신분열병과 동일한 소견을 보인다는 것이다. 다만 차이점은 COS의 경우 치료 약물반응이 상대적으로 떨어지고, 임상경과 및 예후가 나쁘고, 발병전 발달(언어, 인지, 섬세운동)에 문제가 심각하고, 염색체 이상, 정신분열병이나 정신분열병 스펙트럼 장애의 가족력이 흔하여 유전적 부하가 높다는 것이다. 향후 COS 환자를 대상으로한 유전연구 및 뇌발달 영상 추적연구는 정신분열병의 뇌 신경발달에 관한 기초적인 지식을 확대시킬 것이다. 즉 뇌 발달을 조절하는 유전자의 기능과 발현 시기에 대한 좀 더 명확한 지식을 제공할 것이며 이를 토대로한 위험군에 대한 조기발견 및 치료방안이 강구되어야 하겠다.

• Human Ecology Research
• /
• 제54권1호
• /
• pp.97-106
• /
• 2016

The purposes of this study were to examine the effect of consumers brand identification of a luxury fashion brand on brand attachment and to determine the moderating influences of self-monitoring and social self-esteem on this effect. For this study, a questionnaire was developed through a literature search. The developed survey was then conducted by means of on-line and off-line questionnaires. Data from 228 women with experience in buying luxury fashion brands was analyzed with descriptive statistics, Cronbach a, factor analysis, regression, two-way one-way analysis of variance (ANOVA) and t -test using SPSS for Windows 21.0. First, the brand identification of consumer was composed three factors; actual, ideal, social identification. The brand attachment was composed five factors; emotional, dependency, attraction, intellectual curiosity, and general interest. Second, it was shown that brand identification has a positive influence on brand attachment. Third, it was also shown that there is a moderating influence from self-monitoring on the effect of consumer's brand-identification of a luxury fashion brand on brand attachment. Interaction effect between consumer's brand-identification and self-monitoring was found out to be meaningful at brand affect. Fourth, there was an additional moderating effect from social self-esteem on this effect. Interaction effect between consumer's brand-identification and social self-esteem was found out to be meaningful at brand affect.

• Archives of Plastic Surgery
• /
• 제42권4호
• /
• pp.391-406
• /
• 2015

Macrodystrophia lipomatosa (MDL) is a rare congenital non-hereditary disorder that has significant impact on patient morbidity. This study provides a comprehensive review of the natural history, diagnosis, management, and outcomes of the disorder. A literature search in PubMed was conducted to identify cases of MDL from January 1950 to 14 February 2014. After ruling out articles without information related to the management of the disorder, a summary of 32 studies was performed. An additional three cases from the authors are also presented. Based on 57 journal articles and three additional cases from the authors, around 108 cases of MDL were reviewed. Most patients were males who were admitted to a treatment clinic in the first four years of life. The lower extremities were more frequently affected, with unilateral presentation being most common. They commonly underwent a single-staged surgical procedure with follow-up periods ranging from more than one year up to 21 years. Out of 43 cases that underwent surgical procedures, 13 reported no complications, and there were seven cases of esthetic satisfaction and 15 cases of significant functional improvement. Depending on the severity of a patient's condition, the use of non-invasive diagnostic tools should be carefully considered. Surgery might be a better choice of management than observation, taking into account possible future complications in the absence of surgery and the beneficial outcomes of surgical procedures.

• 대한간호학회지
• /
• 제50권3호
• /
• pp.385-400
• /
• 2020

Purpose: Previous randomized controlled trials (RCT) found that mind-body therapy can improve the health outcomes of patients with irritable bowel syndrome (IBS). The purpose of this meta-analysis was to identify the combined effects of mind-body therapy on patients' IBS symptoms, quality of life, anxiety, and depression. Methods: A systematic literature search was conducted using various databases such as PubMed, EMBASE, CINAHL CENTRAL, DBpia, RISS, and KISS. The primary outcome variables were IBS symptoms and quality of life; the secondary outcome variables were anxiety and depression. Comprehensive Meta-Analysis version 3.0 was used to analyze the extracted data. The effect size was calculated using standardized mean difference (SMD) and 95% confidence interval (CI). Results: Eleven final RCTs were used for this meta-analysis. Mind-body therapy was found to have a significant effect on the IBS patients' symptoms (SMD, -0.63; 95% CI, -0.77 to -0.48), quality of life (SMD, 1.03; 95% CI, 0.40 to 1.66), anxiety (SMD, -0.28; 95% CI, -0.47 to -0.09), and depression (SMD, -0.31; 95% CI, -0.06 to -0.12). Conclusion: This meta-analysis reveals that mind-body therapy significantly improves IBS patients' symptoms, quality of life, anxiety, and depression. The results suggest that, in the future, appropriate mind-body therapy should be applied to Koreans suffering from IBS. Moreover, the therapy's long-term effects should be assessed.