• (The)Study of the Eastern Classic
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• no.36
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• pp.163-202
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• 2009

The poems of Shin Suk-ju can be divided into two periods around the political change by King Sejo; his poems from the former period show that the poet enjoyed abundant pride and leisurely spirit in the self-satisfying world driven by his determination to maintain a pure heart and save and awaken the people during the reign of King Sejong. His ideology of awakening the people, however, was the product of his heroic consciousness to achieve immortal fame. It was his heroic consciousness and determination to sacrifice his life for fame according to the mandate from Heaven that made him join the political change by King Sejo. His poems from the latter period clearly reveal that the way of his life to pursue fame didn't bring him spiritual satisfaction and happiness. He confessed that his conscience was destroyed as he joined King Sejo in his political change and the deeds he achieved and further his life itself were all in vain. He lost the values or orders he pursued, which caused instability in his life. Facing such instability head-on, he argued that right and wrong, true and false, and good and evil mentioned in the world were all subjective and groundless. Furthermore, he realized all the things and creatures of the world were nothing but phantoms. Those perceptions he had were based on Madhyamaka of Buddhism. Going through such a thinking process, the poet wrote about his mentality of a false reputation with ideal mentality. Heroic consciousness, Buddhist thinking, and pursuit of mentality of a false reputation found in his poems make also frequent appearances in the poems by major literary men in the latter half of the 15th century such as Seo Geo-jeong. His serious searches to overcome his conscientious agony and sense of futility about life had influences on the attitudes toward life and literature of the official literary men of the times. Seong Hyeon's statement that the major literary figures of the times inherited the literary tradition of Shin Suk-ju was not a rhetoric by courtesy.

• (The)Study of the Eastern Classic
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• no.72
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• pp.185-215
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• 2018

This paper discusses the Historical significance of Li-thought at the Hoejae, Lee-Eonjeok's Bongseonjabui. In this study, I tried to derive the value and meaning in the history of the Chosun Dynasty by examining the comparison between the Bongseonjabui and Book of Ancestor-memorial Ceremonies written in the 16th century The following is a summary of the Historical significance of Li-thought of Bongseonjabui. First, it is the first concrete result of the Chosun Dynasty concerning the Family Rituals. Second, it is characterized not only the description of actual procedures but also the explanations of both the theory and reality in Ancestor-memorial Ceremony. Third, it is an example of harmonizing with the national system and the customs of time by applying to the situation of Chosun society at that time. Fourth, it is an example that focuses on the essential meaning of the Ancestor-memorial Ceremony, not the attitude of one side the Zhu Xi's Family Rituals as in the later books.

• Journal of the Korea institute for structural maintenance and inspection
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• v.25 no.3
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• pp.31-39
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• 2021

In this study, the fiber blending ratio and strain rate effect on the tensile properties synergy effect of hybrid fiber reinforced cement composite was evaluated. Hooked steel fiber(HSF) and smooth steel fiber(SSF) were used for reinforcing fiber. The fiber blending ratio of HSF+SSF were 1.5+0.5, 1.0+1.0 and 0.5+1.5vol.%. As a results, in the cement composite(HSF2.0) reinforced with HSF, as the strain rate increases, the tensile stress sharply decreased after the peak stress because of the decrease in the number of straightened pull-out fibers by increase of micro cracks in the matrix around HSF. When 0.5 vol.% of SSF was mixed, the micro cracks was effectively controlled at the static rate, but it was not effective in controlling micro cracks and improving the pull-out resistance of HSF at the high rate. On the other hand, the specimen(HSF1.0SSF1.0) in which 1.0vol.% HSF and 1.0vol.% SSF were mixed, each fibers controls against micro and macro cracks, and SSF improves the pull-out resistance of HSF effectively. Thus, the fiber blending effect of the strain capacity and energy absorption capacity was significantly increased at the high rate, and it showed the highest dynamic increase factor of the tensile strength, strain capacity and peak toughness. On the other hand, the incorporation of 1.5 vol.% SSF increases the number of fibers in the matrix and improves the pull-out resistance of HSF, resulting in the highest fiber blending effect of tensile strength and softening toughness. But as a low volume fraction of HSF which controlling macro crack, it was not effective for synergy of strain capacity and peak toughness.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.446-453
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• 2021

This paper deals with two methods regarding fact and value. One is the method of H. Putnam, which is to break the boundary between fact and value and to make a world where the two have an inherent connection. The other is the method of J. Habermas, which regards fact and value as the product of an intersubjective agreement based on argumentation. Putnam, through his position of internal realism, moves from realism to pragmatism, especially by combining the rationalist tradition of Kant and Dewey's pragmatic views. Habermas also stands in the tradition of rationalism and universalism in Kant, at the same time emphasizing the practicability of truth in Hegel's tradition of historical reason. The significance of the strategy of Putnam and Habermas is that they have attempted to revive the realm of value against the strict dichotomy of facts and values and the subsequent devaluation of rationality in the realm of value. The starting point of this attempt is that the practical foundation of rationality is laid on life and practice. This could provide the room for escaping from rationality, which prioritizes only truths that reveal facts, that is, instrument-reduced rationality, the room for the revival of practical rationality through reflection on what is the purpose of life, and, in turn, the room for resisting to pass the realm of values and norms to the logic of habitual routines or customs. However, despite such common goal, there are clear limitations to Putnam's approach due to the differences in the strategies taken on facts and values. Putnam's method can demolish the whole universal framework that is the foundation where pragmatic pluralism will be fostered, eliminating the difference between the specificity of values and the universality of norms and shaking up the status of universal ethics. Therefore, Habermas' ethical theory is proposed as an alternative to establish a basis for universal ethics by relying on communication rationality and to secure the coercion of norms and blossom cultural pluralism as a diverse lifestyle based on this coercion.

• Phonetics and Speech Sciences
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• v.12 no.4
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• pp.27-36
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• 2020

The aim of this study is to investigate the perceptive aspects of the polysemic sentence final ending "-(eu)lgeol" produced by Chinese Korean learners. "-(Eu)lgeol" has two different meanings, that is, a guess and a regret, and these different meanings are expressed by the different prosodic features of the last syllable of "-(eu)lgeol". To examine how Korean native speakers perceive "-(eu)lgeol" sentences produced by Chinese Korean learners and the most saliant prosodic variable for the semantic discrimination of "-(eu)lgeol" at the perceptive level, we performed a perceptual experiment. The analysed material constituted four Korean sentences containing "-(eu)lgeol" in which two sentences expressed guesses and the other two expressed regret. Twenty-five Korean native speakers participated in the perceptual experiment. Participants were asked to mark whether "-(eu)lgeol" sentences they listened to were (1) definitely regrets, (2) probably regrets, (3) ambiguous, (4) probably guesses, or (5) definitely guesses based on the prosodic features of the last syllable of "-(eu)lgeol". The analysed prosodic variables were sentence boundary tones, slopes of boundary tones, pitch difference between sentence-final and penultimate syllables, and pitch levels of boundary tones. The results show that all the analysed prosodic variables are significantly correlated with the semantic discrimination of "-(eu)lgeol" and among these prosodic variables, the most salient role in the semantic discrimination of "-(eu)lgeol" is pitch difference between sentence-final syllable and penultimate syllable.

• Journal of Internet Computing and Services
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• v.21 no.6
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• pp.23-31
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• 2020

This study was carried out to generate various images of railroad surfaces with random defects as training data to be better at the detection of defects. Defects on the surface of railroads are caused by various factors such as friction between track binding devices and adjacent tracks and can cause accidents such as broken rails, so railroad maintenance for defects is necessary. Therefore, various researches on defect detection and inspection using image processing or machine learning on railway surface images have been conducted to automate railroad inspection and to reduce railroad maintenance costs. In general, the performance of the image processing analysis method and machine learning technology is affected by the quantity and quality of data. For this reason, some researches require specific devices or vehicles to acquire images of the track surface at regular intervals to obtain a database of various railway surface images. On the contrary, in this study, in order to reduce and improve the operating cost of image acquisition, we constructed the 'Defective Railroad Surface Regeneration Model' by applying the methods presented in the related studies of the Generative Adversarial Network (GAN). Thus, we aimed to detect defects on railroad surface even without a dedicated database. This constructed model is designed to learn to generate the railroad surface combining the different railroad surface textures and the original surface, considering the ground truth of the railroad defects. The generated images of the railroad surface were used as training data in defect detection network, which is based on Fully Convolutional Network (FCN). To validate its performance, we clustered and divided the railroad data into three subsets, one subset as original railroad texture images and the remaining two subsets as another railroad surface texture images. In the first experiment, we used only original texture images for training sets in the defect detection model. And in the second experiment, we trained the generated images that were generated by combining the original images with a few railroad textures of the other images. Each defect detection model was evaluated in terms of 'intersection of union(IoU)' and F1-score measures with ground truths. As a result, the scores increased by about 10~15% when the generated images were used, compared to the case that only the original images were used. This proves that it is possible to detect defects by using the existing data and a few different texture images, even for the railroad surface images in which dedicated training database is not constructed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.510-523
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• 2020

This study analyzed groundwater quality in hydroponic cultivation facilities. Through this study, the possibility of groundwater use was evaluated according to the quality of the groundwater for hydroponic cultivation facilities. Good groundwater quality, on average, is pH 6.61, EC 0.27 dS/m, NO3-N 7.64 mg/L, NH4+-N 0.80 mg/L, PO4-P 0.09 mg/L, K+ 6.26 mg/L, Ca2+ 18.57 mg/L, Mg2+ 4.38 mg/L, Na+ 20.85 mg/L, etc. All of these satisfy the water quality standard for raw water in nutrient cultivation. But in the case of farmers experiencing problems with groundwater quality, most of the items exceeded the water quality standard. As a result of the analysis, it was judged that purifying groundwater of unsuitable quality for crop cultivation, and using it as raw water, was effective in terms of water quality and soil purification. If an agricultural water purification system is constructed based on the results of this study, it is judged that the design will be easy because the items to be treated can be estimated. If a purification system is established, it can use groundwater directly in the facility and for horticulture. These study results will be available for use in sustainable agriculture and environments.

• Korean Journal of Agricultural and Forest Meteorology
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• v.23 no.1
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• pp.15-33
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• 2021

In this study, the possibility of discriminating Fire blight (FB) infection tested using the hyperspectral imagery. The reflectance of healthy and infected leaves and branches was acquired with 5 nm of full width at high maximum (FWHM) and then it was standardized to 10 nm, 25 nm, 50 nm, and 80 nm of FWHM. The standardized samples were divided into training and test sets at ratios of 7:3, 5:5 and 3:7 to find the optimal bands of FWHM by the decision tree analysis. Classification accuracy was evaluated using overall accuracy (OA) and kappa coefficient (KC). The hyperspectral reflectance of infected leaves and branches was significantly lower than those of healthy green, red-edge (RE) and near infrared (NIR) regions. The bands selected for the first node were generally 750 and 800 nm; these were used to identify the infection of leaves and branches, respectively. The accuracy of the classifier was higher in the 7:3 ratio. Four bands with 50 nm of FWHM (450, 650, 750, and 950 nm) might be reasonable because the difference in the recalculated accuracy between 8 bands with 10 nm of FWHM (440, 580, 640, 660, 680, 710, 730, and 740 nm) and 4 bands was only 1.8% for OA and 4.1% for KC, respectively. Finally, adding two bands (550 nm and 800 nm with 25 nm of FWHM) in four bands with 50 nm of FWHM have been proposed to improve the usability of multispectral image sensors with performing various roles in agriculture as well as detecting FB with other combinations of spectral bands.

• Journal of the Korean Institute of Landscape Architecture
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• v.49 no.4
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• pp.41-54
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• 2021

This study targets the urban park corresponding to the core areas (Hubs) of Green Infrastructure and estimates their value utilizing the Contingent Valuation Method (CVM) and determines the planning factors which affect them. The research aims to provide basic data for supporting the value improvement in the planning stage for urban parks representing green infrastructure. The primary purpose of this research is to derive variables that affect economic value and planning factors to improve the use-value of urban parks, one of the Hubs of the green infrastructure. In this study, Sejong Lake Park, located in Sejong City, is the target site. This study collected the responses of 105 people by conducting a survey on the intention to pay for the use-value and the planning factors that affect it, targeting visitors to Sejong Lake Park. The study conducts Contingent Valuation Method (CVM) on this survey responses. The results are as follows: first, as a result of analyzing the variables which affect willingness to pay for use-value, residence and age influence the willingness to pay significantly among socioeconomic characteristics. Next, the survey responses of Double-bounded dichotomous choices (DB-DC) CVM are converted into variables through statistic techniques. Furthermore, the variables are used for a Logit model to draw coefficients. The average willingness to pay per person for the use-value of Sejong Lake Park using the derived coefficients was approximately found to be 8,597 won. Therefore, as of 2019, Sejong Lake Park, with a total of 430,000 visitors, is estimated to have an annual economic value of 3.7 billion won. Third, the average Likert scale of the planning factor affecting the decision to pay for the economic value of Sejong Lake Park was the highest along the waterfront landscape, and the convenience facilities and waterfront landscape showed the highest willingness to pay, 10,000 won. In the range between 2,500 won and 5,000 won, the waterfront area ranks highest. Therefore, it can be said that visitors to Sejong Lake Park take account of the economic value of using the waterfront landscape the most. This study is meaningful as a thesis on use-value and the planning factors that affected value evaluation results of urban parks, and the analysis of the correlation between the planning factors of urban parks as hubs located in urban areas.

• Journal of the Daesoon Academy of Sciences
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• v.40
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• pp.1-38
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• 2022

The aim of this research is to discover the value of peace conveyed by Haewon Sangsaeng, the Resolution of Grievances for Mutual Beneficence, as espoused by Holy Teacher Kang Jeungsan (姜甑山, 1871~1909) and to evaluate its modern significance. To the faithful, Jeungsan is seen as the Supreme God who descended into the world in the Late Joseon Dynasty in the year 1871. Until the time of His passing away into Heaven in 1909, He vastly saved the world and fulfilled the hopes of humankind by carrying out the fundamentally innovative Reordering Works of Heaven and Earth (1901~1909) in the Three Realms of Heaven, Earth, and Humanity. He has thereby been appraised as a great religious figure within religious and academic circles. Jeungsan's ideological contributions can be summarized into two main points. One is the concept of 'the Great Opening and the Later World,' which foreshadowed the liquidation of the old system of order and the arrival of a new world. The other contribution is the concept of 'the Resolution of Grievances for Mutual Beneficence,' a fundamental principle meant to achieve human salvation and world peace. In this context, 'the Great Opening' is precisely a 'positivistic religious expression of peace,' and 'the Resolution of Grievances for Mutual Beneficence' is the principle by which 'peace can be achieved in the world for all humankind.' In particular, the Resolution of Grievances for Mutual Beneficence is a tenet within the doctrine of Daesoon Jinrihoe, and it is the main concept that forms the basis of Daesoon Thought. It can be said to be the core current that flows through Jeungsan's Reordering Works of Heaven and Earth. Nowadays, the Resolution of Grievances for Mutual Beneficence is being discussed and cited in various ways in academic fields as well as in discourse on coexistence, mutual beneficence, and peace. The Resolution of Grievances for Mutual Beneficence is specifically based on observations of the structure of conflicts as observed throughout world history via global conflicts, regional conflicts, cultural conflicts, ideological conflicts, class conflicts, generational conflicts, racial conflicts, religious conflicts, and other such conflicts. That is why the Resolution of Grievances for Mutual Beneficence is discussed in depth within academic settings wherein the nature of conflict-resolution is examined. Looking at the previous studies on this topic, those studies tended to focus on key concepts or concerns such as human beings, divine beings, the earthly paradise of the Later World, ideal societies, world peace, new principles of order, and lasting peace. In particular, the Resolution of Grievances for Mutual Beneficence has been presented as directly related to concepts such as love, coexistence, harmony, and peace for humankind and the world. Its significance has been applied to ethics, philosophy, order, and principles, and it has been understood as conveying values such as peace. Accordingly, this paper examines the ideological connections to the succession and establishment of Jeungsan's notion of the Resolution of Grievances for Mutual Beneficence based on previous research, but further examines the value of peace communicated via the principles and ideas that pervade current discourse on the Resolution of Grievances for Mutual Beneficence. I hope to thoroughly explore Haewon Sangsaeng in regards to its modern significance to the world and to humankind.