• Animal Bioscience
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• v.34 no.11
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• pp.1870-1878
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• 2021

Objective: The objective of this experiment was to investigate the effects of different colors produced by light emitting diode (LED) on Brown Tsaiya ducks. Methods: A total of 144 female Brown Tsaiya ducks were randomly allocated into three individual cage rearing chambers with different LED illumination colors as treatments. Three different treatments were: i) white color, ii) blue color, and iii) red color. The experiment periods were from ducks 21 to 49 weeks of age, determined traits included i) egg laying performance, ii) feed intake, iii) egg shell breaking strength, iv) egg shell thickness, v) egg Haugh unit, vi) egg weight, vii) serum Estradiol and Progesterone concentration, and viii) behavior pattern. Results: The results indicated that when compared with white and blue color, red color could stimulate ducks sexual maturation and raised the egg laying performance. The red light group was also observed to have the highest feed intake among three treatments. The blue treatment had the lowest egg shell breaking strength and the highest egg weight among three treatments, nevertheless, no significant difference was observed among three treatments on egg shell thickness and egg Haugh unit. The red light group had higher serum estradiol concentration than the white and blue groups, but no significant difference among treatments on the serum Progesterone concentration was found. The results of behavior pattern indicated that red light group showed more feeding and less resting behavior compared to the blue light group. Conclusion: We found a potential of applying red light illumination in the indoor laying duck raising system with positive results on egg laying performance and acceptable egg weight, equivalent egg qualities compared to white and blue light.

• Animal Bioscience
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• v.37 no.4_spc
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• pp.755-774
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• 2024

The main objective of this study was to present data on the current situation and future trends of pig meat production in the European Union-27 (EU). Pig production has played an important social and economic role for centuries in many states of the EU. In 2022, pig meat production in the EU reached 23 M tons, which represented 21% of total production worldwide. The two key reasons that justify such amount of pork produced, are the acceptance and high consumption of the meat by the local population and the high quality of the meat produced which facilitated pork export. However, current data show a reduction in pork production for the last three years, as a consequence of a series of events that include i) problems with the chain of ingredients supply, ii) uncontrolled increase in African Swine Fever (ASF) outbreaks, iii) fast recovery of pig production in China, iv) increasing concerns by the rural population on the high cost to meet future requirements of the EU legislation on farm management, environmental sustainability and animal welfare, v) increased cost of all inputs involved in pig production and vi) limited interest of the new farmer generation to work on the pig sector. Consequently, pork production is expected to decrease in the EU for the next years, although sales will be maintained at a relative high level because pork is the meat preferred by local consumers in most EU countries. In order to maintain the favourable position of the pork industry in the near future, strategies to implement include: i) maintain the quality of the meat destinated to export markets, ii) improve the control of outbreaks of ASF and other swine diseases, iii) implementation of technological innovations to improve working conditions making more attractive to work in the pork sector of the food chain to the new generation of farmers and workers.

• Economic and Environmental Geology
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• v.57 no.2
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• pp.205-217
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• 2024

This study evaluated the physical characteristics and quality of volcanic rocks distributed in the Jeju Island-Ulleung Island area as aggregate resources. The main rocks in the Jeju Island area include conglomerate, volcanic rock, and volcanic rock. Conglomerate is composed of yellow-red or gray heterogeneous sedimentary rock, conglomerate, and encapsulated conglomerate in a state between lavas. Volcanic rocks are classified according to their chemical composition into basalt, trachybasalt, basaltic trachytic andesite, trachytic andesite, and trachyte. By stratigraphy, from bottom to top, Seogwipo Formation, trachyte andesite, trachybasalt (I), basalt (I), trachybasalt (II), basalt (II), trachybasalt (III, IV), trachyte, trachybasalt (V, VI), basalt (III), and trachybasalt (VII, VIII). The bedrock of the Ulleung Island is composed of basalt, trachyte, trachytic basalt, and trachytic andesite, and some phonolite and tuffaceous clastic volcanic sedimentary rock. Aggregate quality evaluation factors of these rocks included soundness, resistance to abrasion, absorption rate, absolute dry density and alkali aggregate reactivity. Most volcanic rock quality results in the study area were found to satisfy aggregate quality standards, and differences in physical properties and quality were observed depending on the area. Resistance to abrasion and absolute dry density have similar distribution ranges, but Ulleung Island showed better soundness and Jeju Island showed better absorption rate. Overall, Jeju Island showed better quality as aggregate. In addition, the alkaline aggregate reactivity test results showed that harmless aggregates existed in both area, but Ulleungdo volcanic rock was found to be more advantageous than Jeju Island volcanic rock. Aggregate quality testing is typically performed simply for each gravel, but even similar rocks can vary depending on their geological origin and mineral composition. Therefore, when evaluating and analyzing aggregate resources, it will be possible to use them more efficiently if the petrological-mineralological research is performed together.

• Journal of the Korean Society for Library and Information Science
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• v.31 no.4
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• pp.83-112
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• 1997

The purpose of this paper Is to describe the matters to plan the best information systems in Korean old books. It analyzes: i) a range of definition of old books, ii) its characteristics and current state of processing the old documents, iii) the scope of automation and building up the library institution, iv) the construction of Korean old books Information systems, v) its case study, and vi) the evaluation and vision of system. The old document information system have been organized on the basis of library networks systems with the National Central Library as leader, its implemented system has the subsystem such as cataloging system, annotation system, full-text or image-based system, and retrieval system. In case study, it is suggested two examples which has been built in the National Central Library and Sung Kyun Kwan university. finally, it provides the evaluation criteria and vision for the library which designs the old document information systems.

• Journal of Korean Academy of Nursing
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• v.38 no.2
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• pp.321-331
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• 2008

Purpose: To examine the relationship between body fat percentage (BFP) and N-K cell activity (NKCA) in Korean breast and rectal cancer patients just after diagnosis. Methods: With 35 subjects enrolled between November 2002 and May 2003, Bioelectrical Impedance Analysis was used to estimate BFP. FACS Analysis was used to measure N-K cell activity. The relationships between BFP and NKCA were identified by using curve estimation, simple regression, and multiple regression, Results: The mean BFPs of the subjects and all the sub-groups were higher than acceptable BFPs. Both the mean NKCAs of male and female subjects were lower than that of healthy women. NKCA was explained by BFP with a 14.9% variance in the total subjects (p<.05). There were significant negative relationships between BFP and NKCA after controlling age, type of cancer, and stage of cancer while no significant relationship was found after controlling for gender. The relationships between BFP and NKCA in the sub-groups of female, breast cancer, and stage I, and II were significant. The relationships between male, rectal cancer, and the stage III, and VI sub-groups were not identified, but they revealed a mild to moderate steep in curve estimation. Conclusion: Weight reduction could prevent the risk and advancement of breast and rectal cancer in Koreans.

• Journal of Arbitration Studies
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• v.15 no.2
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• pp.263-292
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• 2005

In China, as far as the enforcement of the award is concerned, a three-pronged regime exists : each for domestic, foreign-related and foreign awards. As opposed to domestic awards, foreign-related awards are defined as those involving 'foreign-element.' Among them, this article focuses on the enforcement regimes of foreign-related and foreign arbitral award, and strives to provide a practical outlook of the arbitral award enforcement regime in China. For that, this article consists of five chapters. In chapter I, the purpose and scope of this study are mentioned; In Chapter II, the types, the statutory framework, the related measures, the statistical assessment on enforcement of arbitral awards are addressed. Chapter III points out some issues on the enforcement regimes of foreign-related and foreign arbitral awards, with focus paid to the recognition of foreign-related arbitral awards, the substantive judicial review of foreign-related arbitral awards, and the refusal of enforcement with the social and public interest ground. Chapter VI introduces two non-enforcement cases of foreign-related and foreign arbitral awards. Lastly in chapter V, the author makes a proposal to improve the enforcement regime in China. Although China already obtained a certain level of achievement, she still need to be undertaken by the government and judicial authorities to offset the negative effects of some obstacles to hamper the enforcement such as protectionism so that she may create a more favorable arbitration environment.

• Journal of Environmental Impact Assessment
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• v.20 no.6
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• pp.779-786
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• 2011

This study aimed at comparing protected areas of Korea and Australia based on international conservation criteria by IUCN and analyzing what we need to improve for future management of protected areas of Korea. The registration status of protected areas of Korea listed on IUCN were 11 places in the Ia, 17 in II, 7 in IV, 7 in V; in total 42 places were recorded. However, the lists were missing many important areas. In Korea, we have only 4 protected area categories out of 6 indicating ecological diversity and management in its protected area system are insufficient. On the other hand, 9340 protected areas of Australia were listed on IUCN and evenly distributed in the total of six categories. Therefore, Korea should investigate measures for system establishment which ensures the diversity and indicative of our natural ecosystems and establish balanced system of protected areas including all IUCN categories I-VI through revaluation of natural, cultural, economic and social conditions and the needs.

• 한국신재생에너지학회:학술대회논문집
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• 2010.11a
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• pp.49.2-49.2
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• 2010

Polycrystalline CdTe thin films for solar cell continues to be a promising material for the development of cost effective and reliable photovoltaic processes. The two key advantages of this material are its high optical absorption coefficient and its near ideal band gap for photovoltaic conversion efficiency of 1.4-1.5 eV. In this study we made the CdTe thin films for solar cell application which was deposited on the glass substrates using a modified chemical spray method at low temperature. This process does not require the sophisticated and expensive vacuum systems. The prepared CdTe films were characterized with the aid of scanning electron microscope (SEM), UV-visible spectrophotometer, and X-ray diffraction spectrometer (XRD). Following are results of a study on the "Human Resource Development Center for Economic Region Leading Industry" Project, supported by the Ministry of Education, Science & Tehnology(MEST) and the National Research Foundation of Korea(NRF).

• International Journal of Control, Automation, and Systems
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• v.6 no.5
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• pp.639-650
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• 2008

Electricity price forecasting has become an integral part of power system operation and control. In this paper, a wavelet transform (WT) based neural network (NN) model to forecast price profile in a deregulated electricity market has been presented. The historical price data has been decomposed into wavelet domain constitutive sub series using WT and then combined with the other time domain variables to form the set of input variables for the proposed forecasting model. The behavior of the wavelet domain constitutive series has been studied based on statistical analysis. It has been observed that forecasting accuracy can be improved by the use of WT in a forecasting model. Multi-scale analysis from one to seven levels of decomposition has been performed and the empirical evidence suggests that accuracy improvement is highest at third level of decomposition. Forecasting performance of the proposed model has been compared with (i) a heuristic technique, (ii) a simulation model used by Ontario's Independent Electricity System Operator (IESO), (iii) a Multiple Linear Regression (MLR) model, (iv) NN model, (v) Auto Regressive Integrated Moving Average (ARIMA) model, (vi) Dynamic Regression (DR) model, and (vii) Transfer Function (TF) model. Forecasting results show that the performance of the proposed WT based NN model is satisfactory and it can be used by the participants to respond properly as it predicts price before closing of window for submission of initial bids.

• Journal of the Korean Chemical Society
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• v.58 no.2
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• pp.169-178
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• 2014

A new series of metal complexes of V(IV), Pd(II), Pt(IV), Ce(IV) and U(VI) with 3-[(3-chlorophenyl)-hydrazono]-pentane-2,4-dione (Cphpd) were synthesized and characterized by elemental analysis, molar conductivity, magnetic moment measurements, UV-vis, FT-IR and $^1H$ NMR as well as TG-DTG techniques. The data indicated that the Cphpd acts as a bidentate ligand through the hydrazono nitrogen and one keto oxygen. The kinetic parameters have been evaluated by using Coats Redfern (CR) and Horowitz-Metzeger (HM) methods. The thermodynamic data reflected the thermal stability for all complexes. The calculated bond length and the bond stretching force constant, F(U=O), values for $UO_2$ bond are $0.775{\AA}$ and $286.95Nm^{-1}$. The bond lengths, bond angles, dipole moment and the lowest energy model structure of the complexes have been determined with DFT calculations. The antimicrobial activity of the synthesized ligand and its complexes were screened.