• KSII Transactions on Internet and Information Systems (TIIS)
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• v.17 no.2
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• pp.391-411
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• 2023

Aggregates play the skeleton and supporting role in the construction field, high-precision measurement and high-efficiency analysis of aggregates are frequently employed to evaluate the project quality. Aiming at the unbalanced operation time and segmentation accuracy for multi-class segmentation algorithms of aggregate images, a Chaotic Sparrow Search Algorithm (CSSA) is put forward to optimize it. In this algorithm, the chaotic map is combined with the sinusoidal dynamic weight and the elite mutation strategies; and it is firstly proposed to promote the SSA's optimization accuracy and stability without reducing the SSA's speed. The CSSA is utilized to optimize the popular multi-class segmentation algorithm-Multiple Entropy Thresholding (MET). By taking three METs as objective functions, i.e., Kapur Entropy, Minimum-cross Entropy and Renyi Entropy, the CSSA is implemented to quickly and automatically calculate the extreme value of the function and get the corresponding correct thresholds. The image adaptive multi-class segmentation model is called CSSA-MET. In order to comprehensively evaluate it, a new parameter I based on the segmentation accuracy and processing speed is constructed. The results reveal that the CSSA outperforms the other seven methods of optimization performance, as well as the quality evaluation of aggregate images segmented by the CSSA-MET, and the speed and accuracy are balanced. In particular, the highest I value can be obtained when the CSSA is applied to optimize the Renyi Entropy, which indicates that this combination is more suitable for segmenting the aggregate images.

• Journal of Applied Biological Chemistry
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• v.65 no.4
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• pp.387-396
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• 2022

Skeletal muscle accounts for about 40-50% of body weight and is an important tissue that performs various functions, such as maintaining posture, supporting soft tissues, maintaining body temperature, and respiration. Cancer, which occurs widely around the world, causes cancer cachexia accompanied by muscular atrophy, which reduces the effectiveness of anticancer drugs and greatly reduces the quality of life and survival rate of cancer patients. Therefore, research to improve cancer cachexia is ongoing. However, there are few studies on the link between cancer and muscle atrophy. Cancer cells exhibit distinct microenvironment and metabolism from tumor cells, including tumor-associated macrophages (TAM), tumor-associated neutrophils (TAN), and insulin resistance due to the Warburg effect. Therefore, we summarize the microenvironment and metabolic characteristics of cancer cells, and the molecular mechanisms of muscle atrophy that can be affected by cytokine and insulin resistance. In addition, this suggests the possibility of improving cancer cachexia of substances affecting TAM, TAN, and Warburg effect. We also summarize the mechanisms identified so far through single agents and the signaling pathways mediated by them that may ameliorate cancer cachexia.

• Journal of Korea Society of Industrial Information Systems
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• v.15 no.3
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• pp.41-49
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• 2010

Recently, RFID systems are spreading in various industrial areas faster but cause some serious problems of information security because of its unstable wireless communication. Moreover, traditional RFID systems have a restriction that one tag per each application object. This restriction deteriorates their usability because it is difficult to distinguish many tags without some kind of effort. Therefore, efficient information sharing of objects based on information security has to be studied for more spreading of RFID technologies. In this paper, we design a new RFID tag structure for supporting multiple objects which can be shared by many different RFID applications. We also design an encryption/decryption algorithm to protect the identifying information of objects stored in our tag structure. This algorithm is a light revision of the existing SEED algorithm which can be operated in RFID tag environment. To evaluate the performance of our algorithm, we measure the encryption and decryption times of this algorithm and compare the results with those of the original SEED algorithm.

• Korean Journal of Poultry Science
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• v.13 no.1
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• pp.31-40
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• 1986

The energy metabolism with the normal laying hen and progesterone injected non-laying hen are compared. 1. The FHP of 109.7Kcal for laying hen was 25.5 percent higher than the 87.4 Kcal found for non-laying hen. 2. The MEm's of laying hen and non-laying hen were 149, and 135Kcal/Kg$\^$0.75/day and NAME's of the diets were 77 and 83 percent, respectively. For the laying hen shown negative retention in body energy during the experiment, the 77 percent NAME was the value of supporting egg production. For the non-laying hen shown the positive retention in body energy and zero egg production, the 83 percent NAME was of growth. 3. A change in body weight of 1g was comparable to 3.54 Kcal for laying hen, and 5.0 Kcal for non-laying hen, when calculated on regression equations between body weight change and body energy retention(BE). The figures indicate that the tissue energy is used with an efficiency of 70 percent for egg production. 4. Plasma level of triiodothyronine(T3) for the laying hen is appeared to be higher than that of non-laying hen, although the levels of thyroxine (T4) are equal both in laying and non-laying hen. 5. Activities of four hepatic enzymes(ATP citrate lyase, fructose diphosphate aldolase, isocitrate dehydrogenase and glutamte pyruvic transaminase) were significantly greater in the laying hen than in the non-laying hen.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.7
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• pp.182-191
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• 2016

The purpose of this research was the optimization of protein hydrolysate production using a commercial enzyme bromelain 1200 derived from the leg of Yeonsan Ogae by response surface methodology. Yeonsan Ogae has long been known as supporting health and high efficacy treatment. In recent days, as the efficacy of functional peptides becomes more known, optimization of oligopeptide production and its characteristics from Ogae leg meat has been performed. Response surface methodology was performed for optimization of enzyme hydrolysis. The process was varied in pressure (30 to 100 MPa), time (1 to 3 h), and substrate concentration (10 to 30%). The degree of hydrolysis, amino acids, and molecular weight of products were analyzed. The optimum conditions were determined to be a pressure of 100 Mpa, time of 3 h, and substrate concentration of 20%. Under optimized conditions, degree of hydrolysis was 34.10%. The average molecular weight of protein hydrolysates was less than 1,000 Da. Major amino acids were leucine, lysine, alanine, glutamic acid, and phenylalanine.

• Korean Journal of Medicinal Crop Science
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• v.9 no.4
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• pp.284-289
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• 2001

This study was carried out to know the effect of mulching on growth and yield of Peucedanum japonicum. Time from sowing to germination was 8day at raising seedling(RS) and 40day at direct sowing(DS). The order of goodness in top part growth as follows : RS+white vinyl mulching (WVM), RS+black vinyl mulching (BVM), RS+no mulching(NM) and DS+NM. Tap root length at RS + NM was significantly shorter than those at the others. Tap root at the others was about same length. Tap root diameter was significantly larger at vinyl mulching than at no mulching and the thinnest at DS+NM. The number of supporting root at RS was more than DS as much as $4.7{\sim}7.1$. Rate of dried root weight to fresh weight was highest(30.5%) at DS+ NM and low at vinyl mulching. Dried root yield per 10a was 542kg at RS+WVM, 506kg at RS+BVM, 419kg at RS+NM and 357kg at DS. These results suggested that raising seedling and white vinyl mulching was good for culture of Peucedanum japonicum.

• Journal of Digital Convergence
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• v.14 no.1
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• pp.253-262
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• 2016

Yeonsan Ogae has been known as supporting health and high efficacy of treatment. In recent days, as the efficacy of functional peptides has known, the optimization of oligo peptides production and its characteristics from Ogae viscera has been performed. Response surface method was used to perform the optimizaion of enzyme hydrolysis. The range of processes was temperature (40, 50 and $60^{\circ}C$), pH(6.0, 7.0 and 8.0), and enzyme(1, 2 and 3%). The degree of hydrolysis, amono acids, molecular weight of products were analyzed. The optimum process of enzyme hydrolysis were determined as temperature $58^{\circ}C$, pH 7.5, and enzyme concetration 3%. At optimum conditions, the degree of hydrolysis after 2 h reaction was 75-80%. The total amino acids of amino acid and were 386.15 mg/100 g and 155.26 mg/100 g, respectively. The molecular weight of products by using Maldi-TOF was ranged from 300 to 1,000 Da.

• Journal of the Korean Geotechnical Society
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• v.37 no.8
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• pp.51-58
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• 2021

South Korea, as the 10th country to join the Artemis program led by NASA, is actively supporting various researches related to the lunar exploration. In particular, the utilization of water as a resource in the Moon has been focused since it was discovered that ice exists at the lunar pole as a form of frozen soil. Information on the thermal conductivity of lunar regolith can be used to estimate the existence for ice water extraction by thermal mining. In this study, the vacuum pressure effect on thermal conductivity of KLS-1 was investigated with a DTVC (Dusty Thermal Vacuum Chamber). The reliability of KLS-1 was reconfirmed through comparison with thermal conductivity of known standard lunar regolith simulants such as JSC-1A. An empirical equation to assess thermal conductivity considering dry unit weight and vacuum pressure was proposed. The results from this study can be implemented to simulate lunar cryogenic environment using the DTVC.

• Journal of the Korea institute for structural maintenance and inspection
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• v.25 no.5
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• pp.24-31
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• 2021

The soundproof tunnels have been generally designed with H-beam girders, and the high weight of H-beam may cause the excessive design of the substructure. To solve this problem, this paper proposes a new soundproof tunnel girder design composed of pipes and discontinuous plates. First, the structural behavior of the straight girder according to the design parameters was examined through finite element analysis. The arrangement and shape of the plates were determined as the design parameter, to obtain the optimal design of girder. After then, the structural behavior and buckling stability of the arched girder were subsequently evaluated. As a result of the parameter analysis, it was confirmed that the axial force acting on the girder increased and the moment decreased as the ratio of unsupported sections decreased or the number of supporting plates increased. The stress concentration on the pipe member was relieved by increasing the long axis length of the elliptical plate. Arched girder analysis showed that the structural efficiency increase as the long axis of elliptical plate increase. As a result of the buckling evaluation, the buckling threshold load of the three connected girders was about 3.7 times higher than the design load. Consequently, it was confirmed that the proposed soundproof tunnel structure design satisfies both light weight and structural safety.

• Korean Journal of Community Nutrition
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• v.29 no.2
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• pp.129-143
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• 2024

Objectives: The objective of this study is to compare a nutritionally balanced soft blend diet (SBD) with a soft fluid diet (SFD) on the health of inpatients who have undergone oral and maxillofacial (OMF) surgery, ultimately aiming to enhance care outcomes, improve health-related quality of life (QOL), and increase satisfaction with the hospital. Methods: Thirty-two patients were randomized into two groups: sixteen received SFD and sixteen received SBD. Anthropometric, laboratory evaluations were conducted upon admission and discharge. Patients filled out questionnaires on demographics, diet satisfaction, food intake amount, and health-related QOL on the day of discharge, assessed using the EuroQoL 5 Dimensions 3 Level and EuroQoL Visual Analogue Scale (EQ-VAS) instruments. Data were analyzed with descriptive statistics, χ² tests for group differences, and paired nonparametric t-tests for within-group comparisons. The Mann-Whitney U test evaluated inter-group differences in preoperative weight and body mass index (BMI), postoperative changes, meal satisfaction, intake, health-related QOL, and self-assessed health status. P-values were set at a significance level of 0.05. Results: The SBD group had higher dietary intake (63.2% vs. 51.0%) and greater diet satisfaction (80.6 vs. 48.1, P < 0.0001) compared to SFD group. Health-related QOL, measured by EQ-VAS, was better in SBD group (70.3 vs. 58.8, P < 0.05). Postoperative weight and BMI decreased in SFD group but increased in SBD group (P < 0.01). Changes in laboratory results showed more stability in the SBD group. No postoperative infections were reported in SBD group, whereas SFD group had a 31.25% complication rate. Conclusions: While SFD is often recommended after OMF surgery to protect oral wound healing process, our study reveals that SBD not only enhances physical and psychological outcomes but also, somewhat unexpectedly, supports wound healing and reduces complications. Essentially, SBD promotes physical recovery and enhances health-related QOL than SFD by supporting both somatic and mental healing aspects.