• International Journal of Computer Science & Network Security
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• v.22 no.10
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• pp.113-130
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• 2022

Sophisticated automation-based electronics world, more electrical and electronic devices are being used by people from different regions across the universe. Different manufacturers and vendors develop and market a wide variety of power generation and utilization devices under different operating parameters and conditions. People use a variety of appliances which use electrical energy as power source. These appliances or gadgets utilize the generated energy in different ratios. Night time the utilization will be less when compared with day time utilization of power. In industrial areas especially mechanical industries or Heavy machinery usage regions power utilization will be a diverse at different time intervals and it vary dynamically. This always causes a fluctuation in the grid lines because of the random and intermittent use of these apparatus while the power generating apparatus is made to operate to provide a steady output. Hence it necessitates designing and developing a method to optimize the power generated and the power utilized. Lot of methodologies has been proposed in the recent years for effective optimization and economical load dispatch. One such technique based on intelligent and evolutionary based is Black Widow Optimization BWO. To enhance the optimization level BWO is hybridized. In this research BWO based optimize the load for multi area is proposed to optimize the cost function. A three type of system was compared for economic loads of 16, 40, and 120 units. In this research work, BWO is used to improve the convergence rate and is proven statistically best in comparison to other algorithms such as HSLSO, CGBABC, SFS, ISFS. Also, BWO algorithm best optimize the cost parameter so that dynamically the load and the cost can be controlled simultaneously and hence effectively the generated power is maximum utilized at different time intervals with different load capacity in different regions of utilization.

• Journal of Microbiology and Biotechnology
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• v.33 no.5
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• pp.687-697
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• 2023

Identification of novel, electricity-producing bacteria has garnered remarkable interest because of the various applications of electricigens in microbial fuel cell and bioelectrochemical systems. Shewanella marisflavi BBL25, an electricity-generating microorganism, uses various carbon sources and shows broader sugar utilization than the better-known S. oneidensis MR-1. To determine the sugar-utilizing genes and electricity production and transfer system in S. marisflavi BBL25, we performed an in-depth analysis using whole-genome sequencing. We identified various genes associated with carbon source utilization and the electron transfer system, similar to those of S. oneidensis MR-1. In addition, we identified genes related to hydrogen production systems in S. marisflavi BBL25, which were different from those in S. oneidensis MR-1. When we cultured S. marisflavi BBL25 under anaerobic conditions, the strain produced 427.58 ± 5.85 µl of biohydrogen from pyruvate and 877.43 ± 28.53 µl from xylose. As S. oneidensis MR-1 could not utilize glucose well, we introduced the glk gene from S. marisflavi BBL25 into S. oneidensis MR-1, resulting in a 117.35% increase in growth and a 17.64% increase in glucose consumption. The results of S. marisflavi BBL25 genome sequencing aided in the understanding of sugar utilization, electron transfer systems, and hydrogen production systems in other Shewanella species.

• Nuclear Engineering and Technology
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• v.55 no.11
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• pp.3973-3982
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• 2023

As for two-phase flow in rectangular channels, the flow regimes especially like churn-turbulent and annular flow are significant for the physical problem like Countercurrent Flow Limitation (CCFL). In this study, the rectangular channels with cross-sections of 4 × 66 mm, 6 × 66 mm, 8 × 66 mm are adopted to investigate the flow regimes of air-water vertical upward two phase flow under adiabatic condition. The gas and liquid superficial velocities are 0 ≤ j_g ≤ 20m/s and 0.25 ≤ j_f ≤ 3m/s respectively which covering bubbly to annular flow. The flow regimes are identified by random forest algorithm and the flow regime maps are obtained. As the results, the transitional void fraction from slug to churn turbulent flow fluctuate from 0.47 to 0.58 which is significantly affected by the dimensional size of channel and flow rate. Besides, the void fraction at transitional points from churn-turbulent (slug) to annular flow are 0.66-0.67, which are independent with the gap size. Furthermore, a new criteria of slug to churn-turbulent flow is established in this study. In addition, by introducing the interfacial force model, the criteria of churn-turbulent (slug) flow to annular flow is verified.

• Oncology Letters
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• v.42 no.6
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• pp.2686-2693
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• 2019

In recent years, efforts to treat cancer by improving the immune function of patients have received a great deal of attention. As part of the immune system, complement is also under such evaluation. Among the many components of the complement system, complement decay accelerating factor (CD55 or DAF) is known to inhibit complement-mediated cell lysis. However, little is known about the role of CD55 in terms of cancer therapy. The present study aimed to demonstrate that increased levels of CD55 are strongly correlated with the progression of colorectal cancer. A novel CD55 chimeric monoclonal antibody was developed that may boost the immune response, thereby suppressing cancer. The CD55 antibody treatment activated complement and therefore suppressed the proliferation, invasion and migration of colorectal cancer cells. This tumoricidal activity is partly explained by the inflammatory response via the activation of proinflammatory cytokines. In addition, the CD55 antibody treatment synergistically enhanced the tumoricidal activity of 5-FU in colorectal cancer cells, suggesting that combined treatment may be a better strategy in colorectal cancer therapy.

• Journal of Families and Better Life
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• v.27 no.3
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• pp.1-13
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• 2009

The importance of the historical sites in cities has risen, and therefore this study was performed to find the methods to feasibly manage such sites. In line with the purpose, this study analytically reviews Japan's Kyo-machiya Restoration Policy, which has been systematically carried out under civil-official cooperation, and related policies. For reference, Kyo-machiya is the Kyoto-style wooden house. The results are derived as in the following. First of all, Kyo-machiya Restoration Policy was focused not only on traditional wooden houses but on residents and other buildings as well, and carried out under the cooperation among residents, the administrative office and enterprises. Kyoto citizens established their own ordinances that are suitable to each area so that historical sites may be managed in accordance with city planning. Also, the think tank actively participated in the establishment of municipal ordinances. Lastly, the policy was behind local residents and civic organizations so that they would continuously pay respect to historic sites in cities.

• Economic and Environmental Geology
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• v.22 no.2
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• pp.141-150
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• 1989

In order to make economic and geological evaluation of coal in Korea, proximate and ultimate analyses were carried out as well as coal petrological studies such as maceral analyses, vitrinite reflectance and sporinite fluorescence measurement. The coeffcient of correlation between each factor of both conventional utilization and coal petrological parameters were studied as in Table 5 and 6. Their conclusions were as follow: (1) for anthracite, the good parameters of coal rank are mean vitrinite reflectance, carbon content, hydrogen content and H/C atomic ratio: (2) for brown coal and sub-bituminous coal, the good parameters of coal rank are carbon content, calorific value, moisture content, hydrogen content, oxygen content and O/C atomic ratio as well as vitrinite reflectance and sporinite fluorescence. An attempt is made to infer the coalforming environment by utilization of coal petrological analyses and to make comparison of coal analyses with proximate and ultimate analyses throughout the island arc region including Japan, Philippine and Indonesia and continental region including USA, Canada and Australia. As a result, meceral composition of Paleozoic and Mesozoic anthracite are similar to that of the Paleozoic continental coals, which were formed under dry conditions or low water table, but the coalification degree suddenly increased during Daebo orogeny (middle Jurassic to lower Cretaceous). The Tertiary coal resembles those of Tertiary island arc region coal characterized by higher calorific value, volatile matter content and H/C atomic ratio and by the formation of coal under wet conditions or higher water table.

• Journal of Forest and Environmental Science
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• v.9 no.1
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• pp.33-43
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• 1993

About 67% of all forest area in Korea belong to young age stands under II age class, including III age class which can be thinned under DBH 16cm, it comes up more than 90%. Therefore, thinking of the pressing necessity of thinning in our country this study describes the actual conditions analysis of the production of thinned small logs, points at issue and improvement measures of thinned timber production.

• The Transactions of the Korean Institute of Power Electronics
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• v.11 no.5
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• pp.426-430
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• 2006

This paper deals with a novel utilization method of the predicted current in the high performance PI current controller with a control time delay. The inevitable error of the predicted current in the linear servo drive using a permanent magnet linear synchronous motor is analyzed and a modified cross-coupling decoupling synchronous frame PI current controller is proposed in order to improve the current control response under both the control time delay and the inevitable current prediction error. Simulation and experimental results show that the proposed current controller has an improved current control performance under both the control time delay and the inevitable current prediction error in the servo drive system.

• Asian-Australasian Journal of Animal Sciences
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• v.8 no.1
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• pp.59-66
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• 1995

Energy obtained by grazing cattle in oil palm plantations is usually used for maintenance of body functions, the construction of body tissues and pregnancy, the synthesis of milk and the conversion to mechanical energy used for activities such as walking, eating and others. In this study, attempt was made to estimate metabolizable energy (ME) requirement of grazing cattle. Models of ME requirement (MER) for maintenance, gain, pregnancy, lactation and activities were developed. ME system and units were used because of wide recognition. Estimation of ME intake in grazing cattle was expressed as MEVI = $14.58{\times}VI{\times}DMD$, and under grazing condition MEVI = $MER_i$. MER was expressed as a function of net energy(NER, MJ) required for the i'th body function. Coefficient of efficiency for conversion of ME into net energy(ki) was adopted from literatures. Quantifying of ME requirement for Kedah-Kelantan cattle under grazing condition was made by using equation MERM = NEM / kn. The estimated values of MER for Kedah-Kelantan cattle is quite reasonable if compared with other estimates as reported in literatures from stall-fed animals. Dynamic MER models for grazing herd was developed in order to estimate ME requirement for maintenance and productions. These ME requirement models can be used for prediction of energy utilization pattern of the herd in the grazing systems.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.44
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• pp.239-255
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• 2009

The purpose of this article is to examine the Utilization of Umbrella Clauses in Investor-State Contract Disputes. To accomplish the purpose, this article analyzes the ICSID case of SGS v. Pakistan and SGS v. Philippines. Umbrella clauses have become a regular feature of international investment agreements and have been included to provide additional protection to investors by covering the contractual obligations in investment agreements between host countries and foreign investors. In particular, two recent ICSID decisions, SGS v. Pakistan and SGS v. Philippines, have brought to the forefront the question of whether the umbrella clause applies to obligations arising under otherwise independent investment contracts between the investor and the host State. In focusing on the SGS decisions, this article will give some useful guidelines to Government and Academia under currently prevailing environment of the Free Trade Agreement("FTA") in Korea.