• Strategy21
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• 통권41호
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• pp.294-332
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• 2017

The aim of this study is to find ways to apply the strategic communications to the Republic of Korea Navy. It may be a little bit late for the ROK Navy to accommodate the SC in these days because the adoption and implementation of the SC by the Combined Forces Command has already been begun. It was in 2007 when the SC was in place in the CFC. ROK's Ministry of National Defense and Joint Chiefs of Staff have also mulled over the SC and begun to apply it in part in the annual exercises such as Key Resolve command post drills and Foal Eagle field training exercise, etc. For the ROK Navy, in addition to those exercises, it is faced with further areas like North Korean maritime provocations and other maritime incidents where its version of SC is needed. As noted, the SC is not intended to deter or defend directly those provocations and incidents, but aims to create conditions favorable to the achievement of the navy's strategic objectives. The ROK Navy has to establish a SC planning center and implementing organizations within the Headquarters to be consistent with its above organizations such as MND, JCS, and CFC that have already applied the SC in part or in entirety. SC center and other related organizations need to be under the control of VCNO and the center needs to be located and administered by the policy division in N-5 at the HQs. The vision of the navy's SC is the winning without combats and the least damages in time of war. In other for the navy to reach the vision, the strategies to be executed are early establishment of SC implementing organizations, forming consensus over the need for the SC within the navy, strengthening core competencies to apply the SC, acquiring the SC experts and making doctrines on the SC. The SC, in addition, in the navy has to be planned and implemented in not only peace time and crisis time but also war time.

• 한국정보통신학회논문지
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• 제21권4호
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• pp.846-854
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• 2017

본 논문에서는 과거부터 사용되고 있는 천측 기법을 현대의 IT기술과 접목시켜, 컴파스의 오차를 줄일 수 있는 방안을 제안하였다. 천측을 이용하여 진북을 추출할 수 있는 알고리즘을 정리하여, 이를 적용할 수 있도록 엔코더와 방위환을 결합하고, 각종 표시기 및 연산을 위해 임베디드 시스템을 설계하여 이를 구현하였다. 그 결과 약 $0.2^{\circ}$ 정도의 오차로 진북을 추출할 수 있었을 뿐만 아니라, 기존에 천측을 통해 대략 5분 이상 소요되던 시간적 불편함도 편의적인 분석과 함께 5초 미만으로 줄일 수 있음을 알 수 있었다. 특히 기존 자이로컴파스의 오차는 물론 IMO의 방위 기준 등을 분석하여 이들의 허용 오차가 $0.5^{\circ}$ 이하라는 것을 제시하여, 본 논문의 결과가 실제 적용에서 각종 컴파스의 오차를 줄일 수 있는 가치 있는 결과임을 확인할 수 있었다.

• 전자공학회논문지SC
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• 제48권5호
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• pp.31-36
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• 2011

본 논문에서는 Mel-Frequency Cepstral Coefficient (MFCC), Decorrelated Filter Bank (DFB), Octave-based Spectral Contrast (OSC), Zero-Crossing Rate (ZCR), 그리고 Spectral Contract/Roll-Off를 복합 특징벡터로 결합하여 Support Vector Machine (SVM)을 이용한 음악 장르 분류 시스템을 설계하였다. 기존 방식에서는 전체 학습 데이터에 대한 특징벡터를 정규화를 한 후 SVM 모델을 생성하여 분류를 시행하였다. 본 논문에서는 비교 대상이 되는 한 쌍의 클래스에 대해서 One-Against-One (OAO) SVM으로 모델을 생성할 때 선택된 두 클래스의 특징벡터에 대해서만 정규화를 시행하는 방식을 제안한다. 기존 정규화 방식을 이용하면 단일 특징벡터로 OSC를 사용할 경우에는 60.8%, 복합 특징벡터를 모두 이용하는 경우에는 77.4%의 인식율을 얻을 수 있었다. 또한, 제안된 정규화 방식을 이용하면 OSC와 복합 특징벡터에 대해서 각각 8.2%와 3.3%의 추가적인 성능 향상을 얻을 수 있었다.

• 한국전문물리치료학회지
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• 제27권4호
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• pp.292-297
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• 2020

Background: Ankle sprain is one of the most common musculoskeletal injuries in the sports population or during usual daily life activities. The sprain can cause functional ankle instability (FAI), and it is very important to treat FAI. However, the optimum intervention method for FAI has yet to be determined. Objects: This study investigated the impact that virtual reality (VR) training program on balance with ankle kinesio taping for FAI. Methods: Twenty-two people were selected for the study and randomly divided into the experimental (n = 11) and the control group (n = 11). The experimental group had attached kinesio taping on the ankle and then implemented a virtual reality exercise program for 30 minutes a day. Nintendo Wii Fit Plus was used for the VR intervention three times a week for four weeks. The control group performed only two measurements without intervention. Results: There were no statistically significant differences in overall, anterior-posterior (AP), medial-lateral (ML) index of the static balance, and significant differences in overall, AP, ML index of the dynamic balance when taping and VR exercise were applied at the same time (p < 0.05). There were no significant differences in overall and ML index of static and dynamic balance compared with before and after assessment between the experimental and the control group, and found differences in AP index of static and dynamic balance (p < 0.05). Conclusion: Kinesio taping may not influence the balance of FAI as great as people expected. VR approach does not affect the static balance of FAI, but it influences dynamic balance in overall, AP, ML index. The authors suggest that VR-based exercises can be used as an additional concept in clinicians for FAI or as part of a home program because the exercises still have limitations.

• Smart Structures and Systems
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• 제25권5호
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• pp.605-617
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• 2020

The existence of damages in structures causes changes in the physical properties by reducing the modal parameters. In this paper, we develop a two-stages approach based on normalized Modal Strain Energy Damage Indicator (nMSEDI) for quick applications to predict the location of damage. A two-dimensional IsoGeometric Analysis (2D-IGA), Machine Learning Algorithm (MLA) and optimization techniques are combined to create a new tool. In the first stage, we introduce a modified damage identification technique based on frequencies using nMSEDI to locate the potential of damaged elements. In the second stage, after eliminating the healthy elements, the damage index values from nMSEDI are considered as input in the damage quantification algorithm. The hybrid of Teaching-Learning-Based Optimization (TLBO) with Artificial Neural Network (ANN) and Particle Swarm Optimization (PSO) are used along with nMSEDI. The objective of TLBO is to estimate the parameters of PSO-ANN to find a good training based on actual damage and estimated damage. The IGA model is updated using experimental results based on stiffness and mass matrix using the difference between calculated and measured frequencies as objective function. The feasibility and efficiency of nMSEDI-PSO-ANN after finding the best parameters by TLBO are demonstrated through the comparison with nMSEDI-IGA for different scenarios. The result of the analyses indicates that the proposed approach can be used to determine correctly the severity of damage in beam structures.

• 한국컴퓨터정보학회논문지
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• 제17권10호
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• pp.25-33
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• 2012

본 논문에서는 모바일 환경에서 음성인식한 결과에 포함된 오류를 교정하는 규칙기반 접근방법을 제안한다. 제안하는 방법은 처리시간이나 메모리에 제약을 받는 모바일 환경을 고려하여 다음과 같이 구성된다. 오류 교정 속도를 최소화하기 위해서, 음절 해체 및 조합 과정이나 형태소 분석 등의 처리를 줄이고, 최장일치 규칙 선택기준을 바탕으로 오류 발생 추정 지점에서 교정 후보도 하나만 생성한다. 제안하는 방법은 메모리를 효율적으로 사용하기 위해서, 어절사전이나 형태소분석기를 사용하지 않고, 규칙도 유형별로 따로 구분하지 않고 통합하여 저장한다. 제안하는 방법은 모델의 수정 및 유지보수가 용이하도록, 오류교정규칙을 학습말뭉치에서 자동으로 추출하여 구축한다. 실험결과 제안하는 방법은 음성인식 결과에 대하여 정확률을 5.27% 정도 재현율을 5.60% 정도 개선하였다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.14-14
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• 2017

The discipline of plant breeding is experiencing a renaissance impacting crop improvement as a result of new technologies, however fundamental questions remain for predicting the phenotype and how the environment and genetics shape it. Inexpensive DNA sequencing, genotyping, new statistical methods, high throughput phenotyping and gene-editing are revolutionizing breeding methods and strategies for improving both quantitative and qualitative traits. Genomic selection (GS) models use genome-wide markers to predict performance for both phenotyped and non-phenotyped individuals. Aerial and ground imaging systems generate data on correlated traits such as canopy temperature and normalized difference vegetative index that can be combined with genotypes in multivariate models to further increase prediction accuracy and reduce the cost of advanced trials with limited replication in time and space. Design of a GS training population is crucial to the accuracy of prediction models and can be affected by many factors including population structure and composition. Prediction models can incorporate performance over multiple environments and assess GxE effects to identify a highly predictive subset of environments. We have developed a methodology for analyzing unbalanced datasets using genome-wide marker effects to group environments and identify outlier environments. Environmental covariates can be identified using a crop model and used in a GS model to predict GxE in unobserved environments and to predict performance in climate change scenarios. These new tools and knowledge challenge the plant breeder to ask the right questions and choose the tools that are appropriate for their crop and target traits. Contemporary plant breeding requires teams of people with expertise in genetics, phenotyping and statistics to improve efficiency and increase prediction accuracy in terms of genotypes, experimental design and environment sampling.

• 대한후두음성언어의학회지
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• 제15권1호
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• pp.37-42
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• 2004

Electrolarynx(EL), battery operated vibrators which are held against the neck by on-off button, has been widely used as a verbal communication method among post-laryngectomized patients. EL speech can produce easily without need of any additional surgery or special training and be used with any other methods. This institute developed a neck-typed EL named "Blueton" in commperation with EL Company Linkus, which consists of 3 parts : Vibrator part, Control part, Battery part. In this study we evaluated the acoustic characteristics of the produced voices by Blueton compared with Servox-inton using MDVP. Three EL users (2 full time users, 1 part time user) were participated. The results revelaed that NHR higher in Servox than Blueton and intensity is higher in Blueton than Servox. The spectra for vowels produced by EL speakers are mixed signals combined with talkers' vocal output and electrolarynx noise. The spectra pattern is similar with two ELs. High, SPI index and vowel spectra from MDVP demonstrated characteristics of both electrolarynxes related to noise signal. This finding suggests that Blueton helps to provide one of useful rehabilitation options in the post laryngectomy patients.

• 전자공학회논문지C
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• 제35C권6호
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• pp.56-66
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• 1998

본 논문은 비최소 위상 시스템을 보다 효율적으로 제어하기 위하여 기존의 PID 타입의 선형 제어기와 병렬적으로 구성된 신경망 제어기의 구성에 대하여 다룬다. 제안된 제어기의 제어 목표는 비최소 위상 시스템의 제어의 경우 흔히 나타나는 언더슛 현상을 최소화하면서 설정된 시스템 응답과의 응답 오차가 최소화하는 것이다. 전체 비용 함수는 고려된 두 가지의 개별 목적 함수간의 선형 합으로 이루어 진다. 신경망 제어기는 주어진 전체 제어 시간 동안의 제어 성능을 광역 평가를 통하여 주어진 전체 비용 함수를 최소화하는 최적 제어기를 구성하도록 진화 프로그래밍을 이용하여 off-line으로 학습된다. 일반적인 컴퓨터 모의 실험으로 계단 신호 응답에서 나타나는 빠른 settling 시간, 작은 언더슛과 오버슛과 같은 제어 성능 향상의 관점에서 기존의 선형 제어 시스템의 성능에 비해 훨씬 효과적이라는 것을 보인다. 또한, 파렛토(pareto) 다중 최적화 개념을 도입하여 선형 합으로 이루어진 비용 함수 최적화의 한계성과 문제점을 극복한다.

• Asian Pacific Journal of Cancer Prevention
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• 제14권5호
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• pp.2845-2850
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• 2013

Background: Breast cancer is one of the most frequent diseases in women today. Little information exists on modifiable lifestyle factors including effects of ginger supplements (as an anti-oxidant and anti-inflammatory herbal) and water-based exercise on biomarkers related to oxidative stress such as malondialdehyde (MDA), nitric oxide (NO) and glutathione peroxidase (GPx) and adiponectin in obese women with breast cancer. The aim of this study was to determine the single and concomitant effect of 6-wks water-based exercise and oral ginger supplement on the aforesaid markers in obese women with breast cancer. Materials and Methods: Forty women diagnosed with breast cancer ($48{\pm}5.4$ years, $76{\pm}9$ kg, fat mass $41.8{\pm}4%$), volunteered to participate in the study. Subjects were randomly assigned into four groups; placebo, water-based exercise, ginger supplement and water-based exercise+ginger supplement groups. Subjects in the ginger supplement group and the water-based exercise+ginger supplement group orally received 4 capsules (each capsule contained 750 mg), 7 days a week for 6 weeks. The water-based exercise program featured progressive increase in intensity and time, ranging from 50% to 75% of heart rate reserve, in a pool with 15 meters width, 4 times a week for 6 weeks. Fasting blood samples were collected at pre-test and post-test time points. Results: The ginger supplementation and or the water-base exercise resulted in an increase of adiponectin, NO and GPx and reduction MDA, as compared to pre-test values. However, the combined intervention (water-base exercise and ginger supplement) group showed significantly a far better effect on the biomarkers related to oxidative stress and adiponectin levels, as compared to the waterbase exercise or ginger supplement alone groups and the age-matched placebo group. Conclusions: Our results revealed that water-base exercise is a non-drug therapeutic strategy to reduce systemic stress in obese women suffering from breast cancer. Further, ginger supplementation alone or in combination with training, also play an important role in the pathogenesis of oxidative stress in obese women diagnosed with breast cancer.