• Journal of the Korean Magnetics Society
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• v.17 no.1
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• pp.34-37
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• 2007

The crystallographic and magnetic properties of $Fe_{0.9}Zn_{0.1}Cr_2S_4$ have been studied by X-ray diffractometer(XRD), vibrating sample magnetometer(VSM) and $M\"{o}ssbauer$ spectroscopy measurement. The crystal structure was determined by the normal cubic spinel of space group Fd3m and the lattice constant was $a_0=9.9967\;{\AA}$. The specific phenomenon which looks like cusp pattern at 77 K was observed in magnetization corves(ZFC : Zero Field Cooling) under 100 Oe applied field. $N\acute{e}el$ temperature($T_N$) was determined to be 153 K by VSM and $M\"{o}ssbauer$ spectra. The asymmetric 8-line profile has been observed at 4.2 K, which was attributed by the colossal electric quadupole interaction(${\Delta}E_Q$), ${\Delta}E_Q$ has 2.22 mm/s at 4.2 K. The ${\Delta}E_Q$ abruptly decreases around 77 K and then it disappears above 77 K with diminishing of 8-line pattern. The isomer shift $\delta$ at room temperature is 0.48 mm/s relative to Fe metal, which means that the charge state of Fe ions is ferrous in character.

• Journal of Sasang Constitutional Medicine
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• v.22 no.1
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• pp.41-48
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• 2010

1. Objective There has been a few trials to diagnose Sasang Constitution by using EEG, but has not been studied intensively. For the purpose of practical diagnosis, the characteristics of EEG for each constitution should be studied first. Recently it has been shown that Sasang Constitution might be related to harm avoidance and novelty seeking in temperament and character profiles. Based on this finding, we propose a visual stimulation method to evoke a EEG response which may discriminate difference between constitutional groups. Through the experiment with this method, we tried to reveal the characteristics of EEG of each constitutional groups by the method of event-related potentials. 2. Methods: We used facial visual stimulation to verify the characteristics of EEG for each constitutional groups. To reveal characteristic in sensitivity and latency of response, we added several levels of noise to facial images. 6 male subjects(2 Taeeumin, 2 Soyangin, 2 Soeumin) participated in this study. All subjects are healthy 20's. To remove artifacts and slow modulation, we removed EOG contaminated data and renormalization is applied. To extract stimulation related components, normalized event-related potential method was used. 3. Results: From Oz channels, it is verified that facial image processing components are extracted. For lower level noise, components related to the visual stimulation were clearly shown in Oz, Pz, and Cz channels. Pz and Cz channels show differences among 3 constitutional groups in maximum around 200 msec. Especially moderate level of noise looks appropriate for diagnosis. 4. Conclusion: We verified that the visual stimulation with facial emotion might be a good candidate to evoke the differences between constitutional groups in EEG response. The differences shown in the experiment may imply that the process of emotion has distinct tendencies in latencies and sensitivity for each consitutional group. And this distinction might be related to the temperament profile of consitutional groups.

• Sijohaknonchong
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• v.30
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• pp.9-20
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• 2009

The purpose of this study is to consider factors such as one's sight of viewing afar, expressional principles, and basic aesthetic category, which are treated importantly by the poets of the Joseon Dynasty era in appreciating nature. 'Afar' of the viewing afar is actual distance and aesthetic distance at the same time. Viewing afar is to find geographical features, depth, and details of a mountain, seeing the whole nature at a high place. Also, it can make possible escape from the external limitation of nature and get mental superiority and enhancement. Ultimately, viewing afar is to find out everlasting change of the nature and reason of natural creation. One's sight in viewing afar makes an appreciator's mind empty and calm, and it makes chance to harmonize human with nature. Viewing afar is to unite human nature to naturality beyond realistic value, idea, and artificiality. The mind from viewing afar has peacefulness and it is a state of serenity without any secular atmosphere. Viewing afar is an eye for beauty to leap toward an endless free state from narrow sight about objects. It rejects modification and technics in achieving an world of harmony. It means that objects should not be restrained by human's recognition. There are three expressions, which are high, horizontal, and transcendental viewing afar. The aesthetic category and beauty of peaceful mental state are realized by the expressions. The peaceful mental state makes peaceful mind from realistic conflicts and makes us experience a profound reason of nature.

• Korean Journal of Plant Resources
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• v.26 no.4
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• pp.491-502
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• 2013

Persimmon (Diospyros kaki Thunb) fruit is one of the most important fruit and have been cultivated from ancient times in Korea. In this study, we found 16 EST-SSR markers that contained one or more EST-SSR sites from 246 cDNA sequences. The developing of EST-SSR marker analysis from 42 persimmon cultivars was compared by genetic relationships and morphological relationships using 6 qualitative traits (fruit related 6 traits) and 19 quantitative traits (flower related 19 traits). In this study, 25 primer sets were tested to identify PCR polymorphism and 14 potential EST-SSR primer pairs were selected. The result of morphological relationship EST-SSR marker analysis showed that the coefficient 0.02 was difficult to categorize in several groups. And then, coefficient 0.77 of genetic relationship showed that the group was classified as four groups. The result of correlation distance between genetic relationship and morphological relationship were investigated was low significance (-0.03). Our results also provided an optimized method for improvement of breeding efficiency and introduce of superior character at persimmon cultivars using EST-SSR markers which was useful for further investigation.

• Journal of Digital Convergence
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• v.13 no.2
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• pp.393-399
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• 2015

Nowaday, beyond the time of wellbeing and LOHAS, many people have great interest in self therapy, so it is called healing era. As the folk medicine fields are actively industrialized and the interest in health improvement, not disease cure, is increased, many researches about the alternative medicine and therapy in various fields are being performed. In the times of the interest in health improvement and spontaneous, natural healing ability of human body is getting increase, it is very meaningful to search the factors which consist of recognition to folk medicine. So in this study, we developed the questionaries on the basis of previous studies, researched the factors affecting the recognition to folk medicine using factor analysis, and tested statistically the difference of recognition character according to demo-statistical traits. As the result, the twenty-four measurable variables related to folk medicine are sorted to four factors, ie, health improvement factor, safety factor, psycholocial factor, and substitutional factor. And overall, the middle and senior ages, the forties to sixties, and higher-educated peoples have more experiences in folk medicine than the younger ages, below thirties and lower-educated peoples. The distiction of sex makes little differences.

• Journal of Digital Convergence
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• v.14 no.11
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• pp.495-500
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• 2016

Since 2016, the VR market has been on the rapid growth. The most critical and arising issue in the VR market is VR contents. That is because it is necessary to develop making techniques and various VR contents to satisfy users' immersion and interaction as much as possible. Therefore, this study focused on VR image contents, conducted domestic and foreign cases of the components of visual and auditory inducement to keep and improve immersion, and thereby tried to find a right direction of visual and auditory inducement. As a result, the visual and auditory components of visual and auditory inducement were found to be photographing, edition, lighting, stitching, graphics, effect, voice actor's narration, dubbing, character voice, background sound, and sound effect; its technical and content components were found to be photographing technique, edition technique, lighting, stitching, graphics and effect, sound and sound effect, and theatric direction based on Mise-en-Scene, lines and narration of characters, and movements of characters and objets. For VR image contents, not only visual and auditory components, but technical and content components are necessary to improve immersion. In the future, it will be necessary to continue to research them.

• Journal of the Korean Chemical Society
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• v.58 no.1
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• pp.118-125
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• 2014

This study purposes to historical approach the formation process of Nature-Study, and to re-evaluate its definition and direction at present. The idea of Nature-Study originated from Campanella, Ratke and Comenius, who emphasized real things. The idea developed through Object Lessons of Sheldon, the Natural History of Agassiz, and Progressivism of Parker. They acted as the main contributors who evolved the idea of Nature-Study and its core fields that involve: 'studying with real things' in Object Lessons which brought the methodical aspects to the idea, 'studying with nature' from Natural History that enhanced the content characteristics and 'learner-centered education' from Progressivism, which impacted the philosophical aspects. Straight (a fellow student of Agassiz) was a teacher for Sheldon Oswego normal school and Parker's Cook County normal school, who synthesized the fields together and paved the way for the formation of Nature-Study. Jackman of Cook Country normal school established Nature-Study as a school curriculum and Bailey and Comstock of Cornell University formed the American Nature-Study Society and as a result, Nature-Study started to gain popularity. However, many educators increasingly rejected Nature-Study as a unifying topic, and preferred the use of textbooks rather than firsthand experiences. This hindered the nature-study movement and it declined since the 1920s. But today, the Nature-study idea can play a huge role in developing science education, inclusive education centered nature, self-initiated retrieval, sympathy with nature and character building of students.

• Journal of the Korea Society of Computer and Information
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• v.5 no.2
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• pp.30-36
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• 2000

The hidden node plays a role of the functional units that classifies the features of input pattern in the given question. Therefore, a neural network that consists of the number of a suitable optimum hidden node has be on the rise as a factor that has an important effect upon a result. However there is a problem that decides the number of hidden nodes based on back-propagation learning algorithm. If the number of hidden nodes is designated very small perfect learning is not done because the input pattern given cannot be classified enough. On the other hand, if designated a lot, overfitting occurs due to the unnecessary execution of operation and extravagance of memory point. So, the recognition rate is been law and the generality is fallen. Therefore, this paper suggests a method that decides the number of neural network node with feature information consisted of the parameter of learning algorithm. It excludes a node in the Pruning target, that has a maximum value among the feature value obtained and compares the average of the rest of hidden node feature value with the feature value of each hidden node, and then would like to improve the learning speed of neural network deciding the optimum structure of the multi-layer neural network as pruning the hidden node that has the feature value smaller than the average.

• Journal of Veterinary Clinics
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• v.27 no.1
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• pp.42-45
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• 2010

Inflammatory sinonasal disease was diagnosed in five dogs and two cats with clinical signs of nasal discharge and epistaxis. Survey radiography and CT were performed in all of patients. CT scan of the rostral cranium was performed with a thickness of 2 or 5 mm. Nasal cytology and culture from nasal smear were performed immediately after CT examination. Remarkable increase of opacity in the nasal cavities and frontal sinuses was observed in only 3 cases. On CT images, the cavitating lesions were isodense in nasal cavity (7 cases), frontal sinuses (3 cases), and nasopharynx (2 cases) with destruction of the nasal septum (4 cases), maxillary turbinates (5 cases), maxilla (3 cases), and hard palate (3 cases). The lesions were enhanced after intravenous contrast administration in 5 cases and were not enhanced in 2 cases. Inflammatory cells were observed in nasal cytology. Most of the cultures from nasal smear were bacteria. CT is useful to diagnose sinonasal disease and is more accurate in demonstrating the extent and character of lesions of nasal cavity than radiography.

• The Journal of the Acoustical Society of Korea
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• v.24 no.8
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• pp.481-491
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• 2005

The purpose of this study is to interpret the evaluation structure of auditory images about streetscapes in urban area on the basis of the semantic view of soundscapes. Using the caption evaluation method. which is a new method, from 2001 to 2005, a total of 45 college students participated in a fieldwork to find out the images of sounds while walking on the main streets of Namwon city. It was able get various data which include elements, features, impressions, and preferences about auditory scene. In Namwon city, the elements of the formation of auditory images are classified into natural sound and artificial sound which include machinery sounds, community sounds. and signal sounds. Also, the features of the auditory scene are classified by kind of sound, behavior, condition, character, relationship of circumference and image. Finally, the impression of auditory scene is classified into three categories, which are the emotions of humans, atmosphere of the streets, and the characteristics of the sound itself. From the relationship between auditory scene and estimation, the elements, features and impressions of auditory scene consist of the items which are positive, neutral, and negative images. Also, it was able to grasp the characteristics of auditory image of place or space through the evaluation model of streetscapes in Namwon city.