• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1996년도 학술대회
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• pp.9-15
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• 1996

In this paper, we propose a new detector based on the median-shift sign. We call it the median-shift sign (MSS) detector, which is an extension of the classical sign detector. We first analyze the problem of detecting a dc signal in noise of known probability density function (pdf). The MSS detector with the optimum median-shift value, the optimum MSS detector, performs better than the sign detector in Gaussian noise: it has the best performance among the detectors compared in Laplacian and Cauchy noise. It is shown that the MSS detectors with constant median-shift values are nearly equal to the optimum MSS detector. We also analyze the problem of detecting a dc signal when only partial information is available on the noise. The MSS detectors with constant median-shift values are almost equal to the sign detector in Gaussian noise: they perform better than the sign and Wilcoxon detectors for most signal ranges in Laplacian and Cauchy noise.

• 한국전자파학회논문지
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• 제9권1호
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• pp.115-125
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• 1998

본 논문에서는 기존의 고정서비스 마이크로웨이브 시스템에 이미 할당된 주파수대역내에 새로운 NGSO/MSS 시스템의 도입으로 인한 주파수공유 기준을 설정하기 위한 한 방법으로서, M/W국이 NGSO/MSS 서비스링크상의 핸드셋에 미치는 간섭영향과 핸드셋이 M/W 국에 미치는 간섭영향을 동시에 분석하여, 각각 조정영역도 및 시스템광량으로 그 기준을 설정하였다. 그 결과로서 9 홉, 홉간거리가 50 km인 M/W 시스템이 NGSO /MSS 핸드셋에 미치는 간섭의 경우는 M/W 국 안테나의 보어사이트(또는 트렌드라인)의 전방과 후방을 제외하고, 핸드셋이 트렌드라인과의 수직거 리가 4 km 이 상이어야만 두 시스템간의 주파수공유가 가능하였다. 한편, NGSO /MSS 핸드셋이 M/W 국에 미치는 간섭의 경우는 핸드셋이 $7.0\times10^{-14}$ handsets / $m^2$ 이하의 아주 작은 용량하에서 두 시스템간의 주 파수공유가 가능하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2004년도 춘계학술발표대회
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• pp.1371-1374
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• 2004

본 논문에서는 내부 LAN(Local area network)에서 MSS(Maximum segment size)의 변화가 네트워크 성능에 미치는 영향에 대하여 분석한다. 내부 LAN에 웹 클라이언트와 웹 서버를 두고 이더넷(Ethernet)이 허용하는 사이즈 내에서 MSS 값의 변화가 네트워크의 성능에 미치는 영향을 분석한다. 처리량(Throughput), 이용률(Utilization), 분실율, 수신율, RTT(Round Trip Time)를 사용하여 성능을 평가하였다. 실험은 네트워크 시뮬레이터 중의 사실상 표준 도구인 NS-2로 한다.

• 대한임상검사과학회지
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• 제47권4호
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• pp.318-323
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• 2015

본 연구는 국가자료인 제 5기 국민건강영양조사 자료(2010~2012)를 이용하여 폐경기 여성(n=4,340)에서 대사증후군과 비타민 D의 관련성을 평가하고자 실시하였다. 연구결과에서 연령, BMI, TC, 흡연습관 및 중등도 신체활동을 보정한 후, 25(OH)D에 대한 평균값($M{\pm}SE$)이 MSS 0은 $18.18{\pm}0.29ng/mL$, MSS 1은 $18.09{\pm}0.21ng/mL$, MSS 2는 $18.07{\pm}0.19ng/mL$, MSS 3은 $18.04{\pm}0.21ng/mL$, MSS ${\geq}4$는 $17.27{\pm}0.23ng/mL$로 MSS가 증가할수록 감소하였고(p=0.041), 비 대사증후군($18.11{\pm}0.14ng/mL$)에 비하여 대사증후군($17.66{\pm}0.16ng/mL$)에서 유의하게 증가하였다(p=0.042). 결론적으로 대사증후군 구성요소의 증가와 대사증후군은 비타민 D의 수준과 역으로 관계가 있다.

• 한국통신학회논문지
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• 제24권6B호
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• pp.1113-1122
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• 1999

본 논문에서는 IP 멀티캐스트를 ATM 망에서 보다 효율적으로 제공하는 새로운 방법으로 MSS(Multicast Synchronization Server) 모델을 제안하였으며, ATM 망에서 이질적인 QoS(Quality of Service)를 요구하는 다양한 수신자들을 수용하는 방법으로 QCS(QoS Conversion Server) 모델을 제안하였다. MSS 모델은 ATM 망에 존재하는 모든 호스트사이에 직접 VC(Virtual Circuit)를 연결하여 고속으로 데이터를 전송하며, 기존 방식과 비교하여 필요한 VC의 수를 줄임으로써 확장이 용이하도록 하였다. QCS 모델은 하나의 점 대 다중점 VC를 통하여 두 가지 서비스를 제공하도록 ATM 스위치를 확장하여 망 지원을 절약하였으며, QoS 변환을 전담하는 서버를 사용하여 보다 효율적으로 이질적인 수신자들을 수용하였다. 본 논문에서 제안한 MSS 모델과 QCS 모델은 기존 방식이 갖는 효율성 및 확장성 문제를 해결하였으며, 필요한 VC를 비교하여 증명하였다.

• 생물정신의학
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• 제13권2호
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• pp.110-116
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• 2006

Objectives : Alteration of hippocampus was demonstrated in the maternal social separation(MSS) pups, separated from dams on postnatal day(pnd) 14 and placed alone. Therefore, to understand the molecular events involved in the MSS, we have initiated a search for gene profiles that are up or down-regulated in the hippocampus of MSS pups. Methods : Analysis of cDNA microarray was performed by using total RNA extracted from the hippocampus of control and MSS pups on pnd 17. Also, passive-avoidance test was demonstrated on pnd 35. Results : Up-regulation of Nedd4a was observed in the hippocampus of MSS pups. Also, MSS rats showed less elongation of latency in passive avoidance test. Conclusion : We suggest that environmental effects of MSS may be altered the neural and/or glial differentiation and synapse formation-related genes which may lead cognitive alterations in MSS rats.

• 대한임베디드공학회논문지
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• 제3권1호
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• pp.1-7
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• 2008

In this paper, a MSS-NOVO method that combines the HMM composition method with a noise reduction method is proposed for speech recognition in noisy environments. This combined method starts with noise reduction with modified spectral subtraction (MSS) to enhance the input noisy speech, then the noise and voice composition (NOVO) method is applied for making noise adapted models by using the noise in the non-utterance regions of the enhanced noisy speech. In order to evaluate the effectiveness of our proposed method, we compare MSS-NOVO method with other methods, i.e., SS-NOVO, MWF-NOVO. To set up the noisy speech for test, we add White noise to KLE 452 database with different SNRs range from 0dB to 15dB, at 5dB intervals. From the tests, MSS-NOVO method shows average improvement of 66.5% and 13.6% compared with the existing SS-NOVO method and MWF-NOVO method, respectively. Especially our proposed MSS-NOVO method shows a big improvement at low SNRs.

• BMB Reports
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• 제41권3호
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• pp.242-247
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• 2008

MSS, a comprising mixture of maesil (Prunus mume Sieb. et Zucc) concentrate, disodium succinate and Span80 (3.6 : 4.6 : 1 ratio) showed a significant improvement of memory when daily administered (460 mg/kg day, p.o.) into the normal rats for 3 weeks. During the spatial learning of 4 days in Morris water maze test, both working memory and short-term working memory index were significantly increased when compared to untreated controls. We investigated a molecular signal transduction mechanism of MSS on the behaviors of spatial learning and memory. MSS treatment increased hippocampal mRNA levels of NR2B and TrkB without changes of NR1, NR2A, ERK1, ERK2 and CREB. However, the protein levels of pERK/ERK and pCREB/CREB were all significantly increased to $1.5{\pm}0.17$ times. These results suggest that the improving effect of spatial memory for MSS is linked to MAPK/ERK signaling pathway that ends up in the phosphorylation of CREB through TrkB and/or NR2B of NMDA receptor.

• Journal of Nutrition and Health
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• 제33권3호
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• pp.279-288
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• 2000

The study examined BMIs, physical strength, activities, and the attitudes and behavior toward weight control among 7,968 Korean students{2,435 5th graders from elementary schools(ESs), 2,524 2nd graders from middle schools(MSs), 2,739 2nd graders from high schools(HSs)} nationwide. Compared to the 1987 data, there were increases of height(3-6cm) and weight(3-8kg), but decreases of physical strength and exercise. Lack of 'regular exercise' among girls from MSs and HSs and higher proportion of time spent on watching TV and using a computer for elementary schoolers were particularly noticeable. Proportions of students who were satisfied with their body weight were 49% for ESs, 35% for MSs, and 29% for HSs. There was no relationship between subjective and objective evaluations of body weight. Diet rather than exercise was more frequently chosen as a method of weight control. Compared to boys, girls showed stronger association between the amount of exercise and the subjective body weight in MSs and HSs, however this association was not found for the subjects from HSs. Values for the 50th percentile of BMI of boys and girls were 18.4 and 17.7 for ESs, 19.9 and 20.1for MSs, and 21.4 and 20.6 for HSs. In MSs and HSs, boys with BMI between 15th to 85th percentiles were physically stronger than those whose BMIs were lower than 15th kor higher than 85th percentiles. For the other groups, there was a trend of a positive relationship between BMI and physical strength. Based on the analyses of BMI and physical strength, this study suggests 22 and 21 for upper grades in ESs, 24 and 23 for MSs, and 27 and 25 for HSs as the respective cut off points of BMI for weight control n boys and girls. A need for implementing nutrition education program focused on weight control is also suggested.

• 보건의료산업학회지
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• 제10권4호
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• pp.109-121
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• 2016

Objectives : This study was conducted to investigate the need of medical supporting service (MSS) as a part of community-based hospice palliative care from the view point of beneficiaries and providers. Methods : This study adopted a methodological triangulation design. A questionnaire regarding intention to use MSS was completed by 175 patients under home-based cancer patient management program. And three focus groups consisted of hospice nurses, public health physicians, and public officials were interviewed to obtain the perceived needs, obstacles, and solutions of MSS. Results : Mean age of home-based cancer patient was 70.18 year old, 48.0% of them were living alone. Only 53.7% of them were treated pain and 93.7% intend to take pain medication prescribed by public health physician. All participants of focus group interviews agreed necessity and importance of MSS. Physicians' lack of confidence and unwillingness to prescribe opioid to terminal patients was the biggest obstacle to provide MSS in the public health center. Conclusions : The necessity and demand of MSS for community-dwelling cancer patients were verified. MSS is urgent issue to meet their needs.