• 전기전자학회논문지
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• 제23권2호
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• pp.479-486
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• 2019

CCN은 MHT에 기반한 콘텐츠 인증 기술을 사용한다. MHT의 중복 해시 계산 및 인증정보 중복 전송으로 인한 비효율성을 개선하기 위한 연구가 발표되었다. 그러나 MHT를 이용하기 위해서는 효율성 향상뿐만 아니라 오류 발생 가능성도 최소화해야 한다. 이 논문에서는 개선된 MHT의 오류 발생 가능성을 설명하고, 오류 발생 시 그 파급효과에 관하여 분석한다.

• 전자공학회논문지SC
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• 제41권4호
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• pp.13-20
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• 2004

본 논문에서는 표적 추적에 널리 사용되는 다중 가설 추적(MHT: Multiple Hypothesis Tracking) 알고리듬의 추적 성능을 예측할 수 있는 방법을 제시한다. MHT 알고리듬은 최적의 베이시안 필터로서, 측정된 데이터를 기초로 가능한 가설들을 구성하고, 각 가설들의 확률을 구하게 된다. 모든 측정치들은 관심 있는 실제 표적에서 기인할 수 있을 뿐만 아니라, 새로운 표적이거나 표적이외의 거짓에서 발생할 수도 있다는 사건을 고려하고 있기 때문에 다른 여러 추적 필터에 비해 MHT 알고리듬은 우수한 추적성능을 가지고 있다고 알려져 있다. 측정 데이터와 무관하게 추적기의 성능을 표현하기 위해서 HYCA(Hybrid Conditional Average)방법을 이용하여 MHT 알고리듬에서 발생하는 모든 가설 확률의 기대 값을 구한 후, 이를 이용하여 성능을 예측하는 방법을 제시한다. 수치실험을 통하여 이 논문에서 제시한 성능 예측이 타당함을 보인다.

• 생약학회지
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• 제47권3호
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• pp.280-286
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• 2016

Helianthus tuberosus Linne (Compositae) has been widely used as a folk remedy to treat various ailments including fever, bleeding, fracture and contusion. This study was designed to elucidate the lifespan extending activities MeOH extract of the tubers of Helianthus tuberosus Linne (MHT) using Caenorhabditis elegans (C. elegans) model system. In the current study, we found that the lifespan of worms was significantly extended by MHT supplement, dose-dependently. MHT also provided robust protection against various stress environments such as osmotic, thermal and oxidative condition. In addition, elevated antioxidant enzyme activities by MHT resulted in attenuation of intracellular reactive oxygen spices (ROS) levels, suggesting antioxidant capacity of MHT might be associated with longevity properties. Herein, we showed that altered food intake and growth of worms were also involved in the MHT activity. Furthermore, MHT increased body movement in aged worms, indicating possible role for MHT in healthspan.

• Preventive Nutrition and Food Science
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• 제8권4호
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• pp.372-376
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• 2003

The efficacy of a medicinal herb tea (MHT) for assisting smoking cessation and for reducing withdrawal symptoms was evaluated by a placebo controlled subjective test in 100 male smokers. The MHT group experienced less craving for the taste of tobacco, and was more successful at quitting smoking. Among the subjects continuing to the final stage, 23 subjects (38.3 %) who took the MHT and 2 subjects (10.0 %) who took the placebo tea succeeded in quitting smoking. In the group taking MHT, urinary cotinine concentration increased during the first 2 weeks and then greatly decreased from weeks 2 to 4. The urinary cotinine concentration in the MHT group at week 0 was 38.6 mol/L but decreased to 24.5 mol/L by the end of week 4. MHT also reduced withdrawal symptoms, a frequent reason for failure in reducing or quitting smoking. The effects of the herbal tea on smoking cessation and withdrawal symptoms may be attributed to increased metabolism of nicotine and other effects of unidentified components of the herbal ingredients.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 V
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• pp.2787-2790
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• 2003

In this paper, we predict tracking performance of the multiple hypothesis tracking (MHT) algorithm. The MHT algorithm is known to be an optimal Bayesian approach and is superior to asly other tracking filters because it takes into account the events that the measurements can be originated from new targets and false alarms 3s well as interesting targets. In the MHT algorithm, a number of candidate hypotheses are generated and evaluated later as more data are received. The probability of each candidate hypotheses is approximately evaluated by using the hybrid conditional average approach (HYCA). We performed numerical experiments to show the validity of our performance prediction.

• Journal of Microbiology and Biotechnology
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• 제29권5호
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• pp.704-712
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• 2019

Although nanometric dead Lactobacillus plantarum has emerged as a potentially important modulator of immune responses, its underlying mechanism of action has not been fully understood. This study aimed to identify the detailed biochemical mechanism of immune modulation by micronized and heat-treated L. plantarum LM1004 (MHT-LM1004, <$1{\mu}m$ in size). MHT-LM1004 was prepared from L. plantarum LM1004 via culture in a specifically designed membrane bioreactor and heat treatment. MHT-LM1004 was shown to effectively induce the secretion of $TNF-{\alpha}$ and IL-6 and the mRNA expression of inducible nitric oxide synthase (iNOS). MHT-LM1004 enhanced the expression of TLR-2, phosphorylation of MAPKs (ERK), and nuclear translocation of $NF-{\kappa}B$ in a dose-dependent manner. Oral administration of MHT-LM1004 ($4{\times}10^9$ or $4{\times}10^{11}cells/kg$ mouse body weight) increased the splenocyte proliferation and serum cytokine levels. These results suggested that MHT-LM1004 effectively enhances early innate immunity by activating macrophages via the TLR-2/MAPK/$NF-{\kappa}B$ signalling pathway and that this pathway is one of the major routes in immune modulation by the Lactobacillus species.

• 한국항행학회논문지
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• 제1권1호
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• pp.35-46
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• 1997

다중 표적의 추적은 과거 10여년 동안 레이다 용용분야에서 큰 주목을 받아 왔으며 많은 학술회의와 논문발표의 중심 과제가 되어왔다. 이 문제를 해결하기 위하여 여러 가지 추적방식들이 제시되어 왔다. 그 중 대표적인 것으로는 Nearest Neighbor (NN) 방식에 의한 비확률적인 짝배정(association) 방법과 확률적인 표적모형에 기초한 Multiple Hypothesis Test (MHT) 방식 및 Joint Probabilistic Data Association (JPDA) 방식으로 대별할 수 있다. 이러한 여러 가지 방식들은 각기 그 장점 및 단점을 가지게 되어 계산속도나 표적의 추적정확도에 있어서 큰 차이를 나타내게 된다. 본 논문에서는 NN방식, MHT 방식 및 JPDA 필터에 기초한 세 가지 추적 알고리듬을 비교하고, 시뮬레이션을 통하여 다중 기동 표적에 대하여 그 추적성능을 분석한다.

• 대한한의학방제학회지
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• 제27권1호
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• pp.87-100
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• 2019

Objective : This study's purpose was to review the clinical studies of Mahwang-tang (MHT). Method : We searched ten clinical studies of MHT using KISS, RISS, NAVER, PUBMED, Science Direct. Ten papers were sorted by 4 topics, as influenza, pediatric febrile symptoms, contact dermatitis, and adjuvant for chronic hepatitis C. At last we analyzed if these papers are consistent with the keywords of Shanghanlun provisions about MHT. Results : When summarizing these papers again by topic, there were 4 studies on influenza, 1 study on pediatric febrile symptoms, 1 study on contact dermatitis and 4 studies as an adjuvant for chronic hepatitis C. Conclusion : These studies were consistent with terms such as fever, headache, aversion to wind, body pain, pain in the lumbar, articular pain written in Shanghanlun provisions. In addition to this, research on anti-depressive effects of MHT is proceeding systematically. However, studies on nosebleeds and pulses are still underdeveloped and further studies are needed.

• Nuclear Engineering and Technology
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• 제55권7호
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• pp.2474-2482
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• 2023

The development of fast reactors with complex designs and operation status requires more accurate and effective simulation. The Monte-Carlo method can generate multi-group cross-sections in arbitrary geometry without approximation on resonances treatment and leads to good results in combination with diffusion codes. However, in previous studies, the coupling of Monte-Carlo generated multi-group cross-sections (MC-MGXS) and transport solvers has shown relatively large biases in fast reactor problems. In this paper, the main contribution to the biases is proved to be the neglect of the angle-dependence of the total cross-sections. The flux-moment homogenization technique (MHT) is proposed to take into account this dependence. In this method, the angular dependence is attributed to the transfer cross-sections, keeping an independent form for the total sections. For the MET-1000 benchmark, the multi-group transport simulation results with MC-MGXS generated with MHT are improved by 700 pcm and an additional 120 pcm with higher order scattering. The factors that cause the residual bias are discussed. The core power distribution bias is also significantly reduced when MHT is used. It proves that the MCMGXS with MHT can be applicable with transport solvers in fast reactor analysis.

• 비만대사연구학술지
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• 제2권2호
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• pp.54-63
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• 2023

Estrogen is crucial in regulating food intake, energy expenditure, glucose metabolism, and lipid metabolism. During menopause, the decline in estrogen levels predisposes women to weight gain, abdominal obesity, insulin resistance, type 2 diabetes, hypertension, and cardiovascular disease (CVD). Menopausal hormone therapy (MHT) prevents weight gain, improves lipid metabolism by lowering low-density lipoprotein cholesterol while raising high-density lipoprotein cholesterol, and delays the onset of type 2 diabetes in menopausal women. The effect of MHT on CVD in menopausal women remains controversial. The Women's Health Initiative study was terminated prematurely after it revealed that hormone administration increased the risk of myocardial infarction, stroke, and thromboembolism. However, some studies have found that MHT had no effect or decreased the risk of CVD. The inconsistent results were likely due to multiple factors, including the timing of hormone therapy initiation, duration of therapy, type and dosage, and presence or absence of CVD risk factors at the start of treatment. Despite its benefits in terms of managing weight gain and reducing the risk of type 2 diabetes, dyslipidemia, and CVD associated with obesity, it is not recommended as the primary therapy for weight loss or diabetes prevention. MHT is primarily indicated for postmenopausal women, who are likely to benefit from its potential to prevent weight gain and improve lipid metabolism.