• 응용통계연구
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• 제34권2호
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• pp.127-139
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• 2021

독립성분분석은 혼합 데이터로부터 독립된 신호들을 분리해내는 대표적인 통계적 방법론이며, 그룹 독립성분분석은 독립성분분석을 여러 개체에 적용할 수 있도록 확장한 방법론이다. 그룹 독립성분분석은 기능적 자기 공명 영상 데이터에 활용되어 의학적으로 유의미한 결과를 줌이 알려져있다. 그러나 자기 공명 영상 스캔에서 흔히 일어나는 이상치가 포함되어 있는 경우, 기존의 그룹 독립성분분석은 그 효과가 떨어짐이 알려져있다. 본 연구에서는 ROBPCA 기반의 로버스트한 그룹 독립성분분석 방법론을 제안하였다. 시뮬레이션과 실제 자료 분석을 통해 제안한 방법과 기존 방법을 비교하였고, 그 결과 제안한 방법론의 로버스트성을 입증했다.

• 한방재활의학과학회지
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• 제21권3호
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• pp.13-20
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• 2011

Objectives : We studied the clinical utility of meridian electromyography for the assessment of erector spinae muscle in functional leg length inequality. Methods : We compared electrical activity between A group with a functional leg length inequality(n=17) and B group(n=23) in dynamic flexion-reextension state during five minutes. We anayzed amplitudes and areas of electrical activity and asymmetry index(AI). Results : 1. The short leg sides were significantly higher electrical activity than the long leg sides in the experimental group and control group(p<0.05). 2. The AI of A group significantly higher than B group(p<0.05). Conclusions : According to above results, there are correlations between erector spinae muscle and functional leg length inequality.

• Archives of Plastic Surgery
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• 제35권3호
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• pp.255-260
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• 2008

Purpose: Tongue cancer is the most common malignant tumor of the oral cavity and the ultimate goal in treatment of the cancer is not only complete excision and meticulous closure of the wound, but also, reconstruction of a demensional and functional tongue. Our study focuses on various factors, such as defect size, extent of tumor, age, application of mandibulectomy or radiotherapy, and their influences on postoperative speech and swallowing function. Methods: Our study was based on 59 patients who underwent tongue cancer operation and reconstruction of the tongue. Speech and swallowing were evaluated according to categories documented by Sultan and Teichgraeber. Patients were classified into 3 groups as partial glossectomy, hemiglossectomy and total glossectomy groups for evaluation. The average age of the patients were 51, and the mean follow-up period was 4 years 2 months. Results: The partial glossectomy group showed statistically relevant results for speech articulation and swallowing abilities compared to the total glossectomy group. In cases of defects involving the mouth floor, the group showed decreased results compared to the group without mouth floor involvement. Increased age showed decreased postoperative results with statistical significance, while mandibulectomy and radiotherapy revealed no statistically significant data. Analysis according to TNM staging resulted in decreased functional result with advanced staging without statistical significance. Conclusion: To summarize the factors influencing the functional outcome in tongue reconstruction, younger patients and early stage cancer with minimal surgical extent revealed more satisfying results while mandibulectomy and radiation did not have influence on our analysis. Addition of various influencing factors and studies with longer follow up periods on our patient groups may provide effective data for more satisfying functional outcomes in the future.

• Nonlinear Functional Analysis and Applications
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• 제27권4호
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• pp.921-925
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• 2022

In this paper, we completely describe the automorphism group of the bounded Kohn-Nirenberg domain in [5].

• 한국식생활문화학회지
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• 제23권4호
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• pp.462-468
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• 2008

In this study, we assessed college students' consumption values with regard to a seaweed functional food, and compared differences between the respondents' purchasing intentions and their educational levels. A self-administered questionnaire was designed and distributed to college students in Daegu/Kyungbook province. A total of 288 questionnaires were collected, and the total response rate was 96.0%. The results demonstrated that purchasing intention influenced all five consumption values. The high purchasing intention (HPI) group evidenced greater functional value, social value, emotional value, conditional value, and epistemic value than was observed in the low purchasing intention (LPI) group. However, individuals' educational levels, as related to food, influenced only the functional value and epistemic value. These results demonstrate that college students' consumption value in terms of seaweed functional foods is affected by purchasing intentions and educational experience.

• Nonlinear Functional Analysis and Applications
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• 제28권1호
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• pp.1-9
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• 2023

Our aim in this paper is to give some new proofs to fixed point theorems due to Abdou [1] for mappings satisfying Reich type contractions in modular metric spaces. We removed the restriction that ω satisfies the ∆₂-type condition imposed on the results of [1]. Furthermore, Lemma 2.6 of [1] which was crucial in the proofs of the results of [1] is not needed in the proofs of our results. Our method of proof is simpler and interesting.

• Nonlinear Functional Analysis and Applications
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• 제28권4호
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• pp.957-988
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• 2023

We define new classes of expansive-type mappings in the setting of modular 𝜔^G-metric spaces and prove the existence of common unique fixed point for these classes of expansive-type mappings on 𝜔^G-complete modular 𝜔^G-metric spaces. The results established in this paper extend, improve, generalize and compliment many existing results in literature. We produce some examples to validate our results.

• Nonlinear Functional Analysis and Applications
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• 제29권2호
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• pp.361-391
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• 2024

In this paper, a pair of ω-compatible self mappings in the setting of modular G-metric space is defined. We prove the existence and uniqueness of common fixed point of pairs of ω-compatible self mappings in a G-complete modular G-metric space. Furthermore, we give an example to justify our claims. The results established in this paper extend, improve, generalize and complement some existing results in literature.

• PNF and Movement
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• 제19권3호
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• pp.351-359
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• 2021

Purpose: This purpose of this study was to investigate the effects of initial cognitive status on the recovery of functional status in patients with subacute stroke. Methods: The participants were 111 patients with subacute stroke, divided into two groups: mini-mental state examination (MMSE) <20 (n=49) group and MMSE ≥20 (n=62) group. Clinical evaluation scores were collected before and after rehabilitation. The repeated measurements ANOVA was used to confirm the changes in functional status before and after intervention in the two groups. Changes in functional status within the group were examined through a paired test. A Pearson correlation coefficient analysis was performed to identify the correlation between MMSE change amount and functional status score. Results: In each of the two groups, according to the initial cognitive status, the clinical evaluation score increased statistically significantly, but there was no difference between the two groups in the degree of significant increase. When examining the correlation between the MMSE change amount, according to the initial cognitive state and the functional state score change amount, it was found, only in the group with MMSE <20, that the larger the change in the MMSE score, the greater the functional state change of Berg balance scale, Rivermead Mobility Index, and motor assessment scale. This did not apply to the group with MMSE ≥20. Conclusion: Initial cognitive status should be considered when setting the patient's goal, and considering cognitive improvement when constructing a rehabilitation program is thought to have a positive effect on rehabilitation services.

• 사회복지연구
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• 제44권2호
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• pp.327-358
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• 2013

본 연구는 노년기 인지기능과 일상생활기능장애 변화양상을 분석하고, 이에 대한 인구사회학적 요인의 영향력을 검증하는 것을 목적으로 하였다. 특히 인지손상정도에 따라 변화양상과 인구사회학적 요인의 영향력이 다를 것이라는 가정 하에, 정상인지를 가진 지역사회 거주노인에서 이후 6년여의 추적조사 기간 동안 치매가 발생한 집단(치매발생집단)과 정상인지를 유지하고 있는 집단(정상유지집단)에 따른 차이를 분석하는 것에 초점을 두었다. 분석 자료는 경기도 연천지역에 거주하는 65세 이상 노인 966명을 대상으로 3년여 간격으로 3회 추적 조사된 역학조사 자료를 사용하였다. 자료 분석은 구조방정식모형을 활용한 잠재성장모형(Latent growth model)과 다중집단분석(Multi-group analysis)을 실시하였으며, 통계프로그램은 AMOS 18.0을 사용하였다. 연구 결과, 치매발생집단은 치매로 진단되기 수년 전부터 정상유지집단에 비해 인지기능이 유의하게 낮을 뿐 아니라 이후 인지저하가 약 3.5배가량 빠르게 진행되었다. 일상생활기능장애 궤적의 경우 초기에는 집단 간 유의한 차이가 없다가, 이후 치매발생집단의 일상생활기능장애가 정상유지집단에 비해 약 3배가량 더 급속히 악화되는 것으로 나타났다. 인지기능과 일상생활기능장애에 대한 인구사회학적 요인의 영향력을 살펴본 결과, 인지저하는 여성에서 더 급격한 반면, 일상생활기능저하는 남성에서 더 현저하게 나타났으며, 생애초기에 결정되는 학력이 생애후기의 인지기능에 강력한 영향력을 갖는 것으로 나타났다. 이러한 연구결과에 근거하여 노년기 인지기능과 일상생활기능장애에 대한 개입에서 주목해야 할 고위험군과 그에 대한 실천적 함의를 논의하였다.