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전체 선택해제
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외판원 문제의 확장된 k-opt 알고리즘
이상운, Lee. Sang-Un 한국컴퓨터정보학회 韓國컴퓨터情報學會論文誌 11 Pages
한국컴퓨터정보학회 韓國컴퓨터情報學會論文誌 2012, Vol.17 No.10 155-165 (11 pages)
간선교환 방법을 적용한 발견적 알고리즘이다. 초기해를 구하는 전형적인 방법은 첫 번째 노드부터 가장 인접한 노드를 방문하여 외판원의 경로를 결정하는 방법이다. 본 논문에서는 각 노드의 최소 간선을 선택하여 선택된 간선들 중 최소값을 가진 노드부터 출발하는 Min-Min 방법과 최대값을 가진 노드부터 출발하는 Min-Max 방법을 적용하고 두 방법 중 최소 경로길이를 가진 방법을 초기해로 결정하였다. 초기해로부터 최적해를 구하는 과정은 기존의 2-간선 교환 방법 (2-opt)을 기본적으로 적용하고, 추가로 확장된 3-opt와... -
Factors Influencing Intra-Operative Body Temperature in Laparoscopic Colectomy Surgery under General Anesthesia: An Observational Cohort
Kong Mi Jin, Yoon Haesang 한국기초간호학회 Journal of Korean Biological Nursing Science 8 Pages
한국기초간호학회 Journal of Korean Biological Nursing Science 2017, Volume 19, No 3 1 123-130 (8 pages)
no autocorrelation problem because the Durbin-Watson statistic (1.59≤d≤1.76) was 1.71 and 1.64 at 1 hour and 2 hours after pneumoperitoneum, respectively. In addition, there was no problem with multicollinearity because tolerance ranged from 0.816 to 0.924 (>.10) and the variance inflation factor ranged from 1.08 to 1.83 (<10) at 1 hour after pneumoperitoneum, tolerance ranged from 0.810 to... Purpose: This study aimed to identify factors influencing intra-operative core body temperature (CBT), and to develop a predictive model for intra-operative CBT in laparoscopic abdominal surgery. Methods: The prospective observational study involved 161 subjects, whose age, weight, and height were collected. The basal pre-operative CBT, pre-operative blood pressure, and heartbeat were measured. CBT was measured 1 hour and 2 hours after pneumoperitoneum. Results: Explanatory factors of... -
Evaluating the short-term effects of a communication skills program for preclinical medical students
Young Mee Lee, Young Hee Lee 한국의학교육학회 Korean Journal of Medical Education 9 Pages
한국의학교육학회 Korean Journal of Medical Education 2014, 제 26권 제 3호 4 179-187 (9 pages)
0 8 0.79(0.98) 1.72(1.26) 5.210 Elicit patient’s views of health problem (ideas, concerns)*** 0 2 0.18(0.47) 0.80(0.63) 6.432 Explore influence of patient’ s problem/disease on his/her life*** 0 2 0.13(0.43) 0.40(0.58) 3.880 How acceptance or acknowledgement patient’s idea or emotion 0 2 0.46(0.61) 0.43(0.60) 0.322 Explore patient’s expectation or preference* 0 2 0.02(0.13) 0.09(0.28) 2.255... -
Gonadotropin-releasing hormone immunization and castration in male pigs: effects on growth, hormonal levels, antibody titer response, testicular function, back fat, and consumers` sensory perceptions
Panuwat Yamsakul , Prapas Patchanee , Terdsak Yano , Thanawish Boonma , Chalermchart Somkert , Anucha Sathanawongs 대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 7 Pages
대한수의학회 Korean Journal of Veterinary Research(구 대한수의학회지) 2017, 제 57권 제 1호 4 23-29 (7 pages)
a leg problem, and pig No. 9 in the immunocastrated group was removed from the experiment because the vaccine could not be expected to have the desired effect, so, the boar group and the immuno- castrated group had only 9 pigs each. Antibody response The level of the GnRH antibody titer 1 was used to moni- tor the effect of the GnRH vaccine. There were no signifi- cant differences in the levels of... -
A Novel Nicotinamide Adenine Dinucleotide Correction Method for Mitochondrial Ca2+ Measurement with FURA-2-FF in Single Permeabilized Ventricular Myocytes of Rat
JeongHoonLee, JeongMiHa, ChaeHunLeem 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.4 10 373-382 (10 pages)
Ca 2+. Our method solved the problem of NADH signal contamination during the use of Fura-2 analogs, and therefore the method may be useful when NADH interference is expected. Key Words: Calcium, Fura-2-FF, Mitochondrial membrane potential, NADH, pH INTRODUCTION Ca 2+ is an essential element involved in initiating and controlling the excitation-contraction coupling process in car- diac myocytes.... carboxy-SNARF-1 for pH were used. With this novel method, we found that the resting mitochondrial [Ca2+] concentration was 1.03 μM. This 1 μM cytosolic Ca2+ could theoretically increase to more than 100 mM in mitochondria. However, the mitochondrial [Ca2+] increase was limited to ∼30 μM in the presence of 1 μM cytosolic Ca2+. Our method solved the problem of NADH signal contamination during the use of Fura-2 analogs, and therefore the method may be useful when NADH interference is expected. -
A Study on the Na+/Ca2+ Exchange Mechanism in the Smooth Muscle of Guinea-pig Stomach
Kim, Eui-Yong, Han, Jin, Kim, Ki-Whan 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 1호 6 55-68 (14 pages)
& Beague, 1986), which the Na/Ca exchange pro- duces. Another problem is produced by mem- brane channels that are affected by changes of Na+ or Ca2+ concentration (Eisner & L,ederer, 1985). In the present experiments, the measurement of the magnitude of the contracture was main- ly used in order to the Na/Ca exchange ratio and partially the membrane potential was recorded to... The effects of changes in extracellular Na+ and Ca+ concentration on the membrane potential and contractility were studied in the antral circular muscle of guinea pig stomach in order to elucidate the existence and the nature of Na+/Ca2+ exchange mechanism. All experiments were performed in tris buffered Tyrode solution which was aerated with 100% O2 and kept at 35℃. The treatment of 10-5 ouabain was performed to induce intracellular Na+ loading prior to the start of experiment. The results... -
Optimization of a Virus-Induced Gene Silencing System with Soybean yellow common mosaic virus for Gene Function Studies in Soybeans
한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2016, 32권 2호 5 112-122 (11 pages)
a tolerance response to abiotic and biotic stresses (Kim et al., 2011). In order to address this problem with soybean cv. SS2-2 showing weak gene silencing, we adjusted the concentration of SYCMV:GmPDS inoculums (Fig. 5) based upon soybean cv. Jangyeobkong, which exhibited the highest gene silencing efficiency at OD600 = 1.0, 1.5, and 2.0 (Fig. 2C). We infiltrated cv. SS2-2 with five differ-... Virus-induced gene silencing (VIGS) is an effective tool for the study of soybean gene function. Successful VIGS depends on the interaction between virus spread and plant growth, which can be influenced by environmental conditions. Recently, we developed a new VIGS system derived from the Soybean yellow common mosaic virus (SYCMV). Here, we investigated several environmental and developmental factors to improve the efficiency of a SYCMV-based VIGS system to optimize the functional analysis of... -
A Study on the Determinants of R&D Efficiency in Government-supported Research Institutes Using Tobit Model
Jeonghwan Lee 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 10 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2017, 제 7권 제 8호 31 343-352 (10 pages)
it was determined that there is no multi-collinearity problem. Although there were cases in which correlations were high for some of the external variables, these were determined that no multi-collinearity problem existed as they measured definitely different concepts. Tobit regression is used to quantify the determinants of patent-oriented efficiency computed using the SFA method. Table 5 shows... This study attempts to calculate R&D efficiency of patent applications and patent grants by analyzing 18 government-supported research institutes in Korea. Then, we focus on evaluating which external socioeconomic factors affect R&D efficiency. We analyzed efficiency determinants by ruling out inputs directly affecting the efficiency of patent application and patent grants using the Tobit regression method. The results showed that the important determinants affecting the efficiency of patent... -
Semantic Key Pre-Distribution Protocol For Multi-Phase Wireless Sensor Networks
Carlos Ramos, Zita Maria Almeida do Vale 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 12 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2011, 제 1권 제 1호 3 17-28 (12 pages)
is a typical small sample size problem and thus cannot characterize the topology of essential gait space. 3) If we regard one pixel as one dimension, the dimensions of the original gait space are very high and the performance of gait recognition systems suffers from the problem of the curse of dimensionality. To solve these issues, we propose to generate CGI-based real templates and synthetic... Gait is a new biometric aimed to recognize a subject by the manner in which they walk. Gait has several advantages over other biometrics, most notably that it is a non-invasive and perceivable at a distance when other biometrics are obscured. We present a new area based metric, called gait masks, which provides statistical data intimately related to the gait of the subject. Early results are promising with a recognition rate of 90% on a small database of human subjects. In addition to this, we...