• Journal of Korea Multimedia Society
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• v.9 no.9
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• pp.1131-1138
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• 2006

This paper proposes a novel method for grading of underground communication conduits by laser projection image analysis. The equipment thrust into conduit consists of a laser diode, a light emitting diode and a camera, the laser diode is utilized for generating projection image onto pipe wall, the light emitting diode for lighting environment and the image of conduit is acquired by the camera. In order to segment profile region, we used a novel color difference model and multiple thresholds method. The shape of profile ring is represented as a minimum diameter and the Fourier descriptor, and then the pipe status is graded by the rule-based method. Both local and global features of the segmented ring shaped, the minimum diameter and the Fourier descriptor, are utilized, therefore injured and distorted pipes can be correctly graded. From the experimental results, the classification is measured with accuracy such that false alarms are less than 2% under the various conditions.

• Journal of Life Science
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• v.17 no.12
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• pp.1760-1765
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• 2007

Proteins are involved in promoting or controlling virtually every event on which our lives depend. Proteins are synthesized in cytosol and in the endoplasmic reticulum where their synthesis machinery are tightly controlled. However, not all of newly synthesized proteins are survived and conduct their essential functions to maintain cell's lives. It was reported that one-third of synthesized proteins are rapidly destroyed by proteasome under the most physiological conditions. full-length translated proteins, which survived, must undergo proper folding and assemble process. Some proteins are spontaneously folded while others require molecular chaperones and folding enzymes to be properly folded. Molecular chaperones are ubiquitously present within the subcellular organelles and from bacteria to animals and plants. Among those members of Hsp70 family have been extensively studied and their regulators have been discovered in the last decade. Here, a brief overview is presented for functional mechanism of Hsp70 homologues and the roles of their regulators. Since biological function of Hsp70 family other than chaperonic function are expending the review would give basic understanding of partnership between Hsp70 family and their regulators.

• Journal of Korean Philosophical Society
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• v.139
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• pp.105-131
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• 2016

The notion of responsibility, which has now gained a firm foothold as one of the fundamental notions of philosophy and its neighboring disciplines, became the subject of philosophical enquiry only in the 19th century by Kierkegaard, who delved into the morality of critical self-awareness in ethical responsibility of the absolute self; and Nietzsche, who put emphasis on the responsibility of the sovereign self in coping with the problems of the future. Nietzsche is the first philosopher who took issue with the diminishment (Verkleinerung) of humanity-what he called human being's greatest disease-that swept Europe at that time. Concerns about Europe's future were the key movens of Nietzsche's philosophy revolving around the advent of nihilism in Europe and its solutions. He prepared alternative solutions in deep awareness that the ethics of good and evil firmly rooted in the traditional metaphysics and Christianity would not even catch the depth and breadth of the big problem of globalization brought about by modernism, let alone solve it. Nietzsche devoted his whole life to disseminating the knowledge that the future of humankind depends on removing these old ethics. This article traces Nietzsche's reflections on the ethical event of responsibility and provides an overview of the purview and scope contained in the meaning covered by the notion of responsibility in his philosophy beyond common norms and values.

• Journal of the Korea Society of Computer and Information
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• v.17 no.2
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• pp.31-40
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• 2012

Iris recognition is a biometric technology which can identify a person using the iris pattern. It is important for the iris recognition system to extract the feature which is invariant to changes in iris patterns. Those changes can be occurred by the influence of lights, changes in the size of the pupil, and head tilting. In this paper, we propose a novel method based on Zernike Moment which is robust to rotations of iris patterns. we utilized a selection of Zernike moments for the fast and effective recognition by selecting global optimum moments and local optimum moments for optimal matching of each iris class. The proposed method enables high-speed feature extraction and feature comparison because it requires no additional processing to obtain the rotation invariance, and shows comparable performance to the well-known previous methods.

• Journal of the Korean Association of Geographic Information Studies
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• v.8 no.2
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• pp.44-54
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• 2005

In this study the tidal area in Seo han bay, North Korea was detected and extracted by using various satellite images (ASTER, KOMPSAT EOC, Landsat TM/ETM+) and GIS spatial analysis. Especially, the micro-landform was classified through the spectral characteristic of each satellite image and the change of tidal flat size was detected on passing year. For this, the spectral characteristics of eight tidal flat area in Korea, which are called as Seo han bay, Gwang ryang bay, Hae iu bay, Gang hwa bay, A san bay, Garorim bay, Jul po bay and Soon chun bay, were analyzed by using multi band of multi spectral satellite images such as Landsat TM/ETM+. Moreover, the micro-landform tidal flat in Seo han bay, North Korea was extracted by using ISODATA clustering based on the result of spectral characteristic. In addition, in order to detect the change of tidal flat size on passing years, the ancient topography map (1918-1920) was constructed as GIS DB. Also, the tidal flat distribution map based on the temporal satellite images were constructed to detect the tidal flat size for recent years. Through this, the efficient band to classify the micro-landform and detect its boundary was clarified and one possibility of KOMPSAT EOC application could be also introduced by extracting the spatial information of tidal flat efficiently.

• Journal of KIISE:Computer Systems and Theory
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• v.32 no.1
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• pp.29-38
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• 2005

The fluid animation procedure consists of physical simulation and visual rendering. In the physical simulation of fluids, the most frequently used practices are the numerical simulation of fluid particles using particle dynamics equations and the continuum analysis of flow via Wavier-Stokes equation. Particle dynamics method is fast in calculation, but the resulting fluid motion is conditionally unrealistic The method using Wavier-Stokes equation, on the contrary, yields lifelike fluid motion when properly conditioned, yet the complexity of calculation restrains this method from being used in real-time applications. Global illumination is generally successful in producing premium-Duality rendered images, but is also excessively slow for real-time applications. In this paper, we propose a rapid fluid animation method incorporating enhanced particle dynamics simulation method and pre-integrated volume rendering technique. The particle dynamics simulation of fluid flow was conducted in real-time using Lennard-Jones model, and the computation efficiency was enhanced such that a small number of particles can represent a significant volume. For real-time rendering, pre-integrated volume rendering method was used so that fewer slices than ever can construct seamless inter-laminar shades. The proposed method could successfully simulate and render the fluid motion in real time at an acceptable speed and visual quality.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.12
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• pp.157-163
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• 2017

The object segmentation approach has the merit of reducing the processing cost required to detect moths of interest, because it applies a moth detection algorithm to the segmented objects after segmenting the objects individually in the moth image. In this paper, an object segmentation method for moth detection in pheromone trap images is proposed. Our method consists of preprocessing, thresholding, morphological filtering, and object labeling processes. Thresholding in the process is a critical step significantly influencing the performance of object segmentation. The proposed method can threshold very elaborately by reflecting the local properties of the moth images. We performed thresholding using global and local versions of Ostu's method and, used the proposed method for the moth images of Carposina sasakii acquired on a pheromone trap placed in an orchard. It was demonstrated that the proposed method could reflect the properties of light and background on the moth images. Also, we performed object segmentation and moth classification for Carposina sasakii images, where the latter process used an SVM classifier with training and classification steps. In the experiments, the proposed method performed the detection of Carposina sasakii for 10 moth images and achieved an average detection rate of 95% of them. Therefore, it was shown that the proposed technique is an effective monitoring method of Carposina sasakii in an orchard.

• Journal of Ginseng Culture
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• v.3
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• pp.11-37
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• 2021

Korean ginseng is the one of the most famous medicinal herbs globally and has long been a representative item of East Asian trade, including across China and Japan. Since Joseon (1392-1910) ginseng trade was entirely controlled by the state, The Veritable Records of the Joseon Dynasty are a valuable resource that can shed light on the history of the ginseng industry at that time. By studying the subsection "The Veritable Records of King Sejong" (世宗實錄), when ginseng was used even more widely, we assess the purpose and scale of its trade in the 15th century, identify its original listing in the geographical appendix, develop a distribution map, and explore similarities to current ginseng cultivation areas. During the reign of King Sejong (1418-1450), ginseng was sent to China as a tribute 101 times, with a combined weight of 7,060 kilograms, with less than one-third of that amount given to Japan and Okinawa. It was used to cover the travel expenses of foreign envoys and servants, but this can be seen to gradually decrease after the regnal mid-term, primarily due to a decrease in the amount of ginseng being collected. At the time, there were 113 areas of naturally growing ginseng as listed in the records' geographical appendix, including 12 recorded in the 'tributes' category: Yeongdeok-gun, Yeongju, and Cheongsong-gun in Gyeongsangbuk-do; Ulju-gun and Ulsan in Gyeongsangnam-do; Jeongeup, Wanju-gun, and Jangsu-gun in Jeollabuk-do; Hwasun-gun in Jeollanam-do; Goksan-gun and Sinpyeong-gun in Hwanghaebuk-do; Jeongju and Taecheon-gun in Pyeonganbuk-do; and Jaseong-gun and Junggang-gun in Jagang-do. A total of 101 places are recorded in the 'medicinal herbs' category, located throughout the mountains of the eight Joseon provinces, except the islands. In comparison with current ginseng cultivation sites, many of these historical areas are either consistent with or adjacent to contemporary locations. The geographical appendix to "The Veritable Records of King Sejong" was compiled in the early days of the king's reign (1432) when there was a lot of wild ginseng. The appendix is a valuable resource that indicates the possibility of growing ginseng on the Korean Peninsula in the future. The apparently natural habitats in the south, where ginseng is not currently cultivated, could be candidates for the future. Moreover, areas in the north where ginseng has not been grown, except Kaesǒng, could be a good alternative under sustainable inter-Korean exchange should cultivation sites move north due to climate warming.