• Journal of the Korean Applied Science and Technology
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• v.29 no.3
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• pp.377-392
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• 2012

It has been known that small solid particles act as a stabilizer in pickering emulsion system. In this study, we successfully prepared stable pickering emulsion in n-hexylalcohol and water system with $TiO_2$ whose surface was treated by alkylsilane. The optimum condition to prepare pickering emulsion stabilized by $TiO_2$ particles was determined by amount of $TiO_2$ particles and ratio of water and oil phase. The type of pickering emulsion was dependent on wettability of particles for water and n-hexylalcohol. When the amount of $TiO_2$ particles increased up to 5.00 wt%, the stability of pickering emulsion was showed to be improved. The most stable pickering emulsion was prepared in the case of W/O type which has the ratio of oil and water phase (3 : 7). We tried to prepare porous $SiO_2-TiO_2$ composite pigments using a pickering emulsion as template at the optimal condition. Porous pigments were synthesized with Ludox HS-30 as an inorganic material by sol-gel process. The characteristics and shape of porous pigments were measured by optical microscope, SEM, BET, XRD and EDS.

• Archives of design research
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• v.13 no.3
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• pp.235-244
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• 2000

The form or interpretation of today's communication design lies in content development and storytelling to the designer. However, the understanding as well as exteriment of the mechanisms behind content creation remain an obscure concept. Particularly given the rapid development of digital technology, since the 1980s typography has been quickly transforming itself from its static state to the more dynamic'Type in Motion'. following this came the need for solid research in'Type in Motion'as the best means of presenting story content and form The previous passage has studied the effectiveness of'Type in Motion'in presenting this kind of content. Type in Motion has allowed vast developments in the methods of story presentation. It is Due that today's digital technology has given many benefits to the designer, but on the other hand, it has required a more diverse understanding of digital design. furthermore, even the designers in digital typography lack the understanding and research in'Type in Motion'not only as a mode of visual language but also of verbal language. Given this point· in hand, the entire interpretation and interrelation of story and'Type in Motion'can be considered essential, given their shaping of effective digital typography.

• Journal of the Korean Society for information Management
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• v.13 no.2
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• pp.73-96
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• 1996

Since 1995 local newspapers competitively commenced the service of multimedia electronic newspaper on Internet WWW due to the technical development in data processing and the widely used Internet. It includes image, phonetics and moving pictures as well as texts. The Internet service of newspaper articles are not only the information source which enables the users utilize the various information easily and rapidly but also to be an important reference service tools in the library. Howeverjn many cases. the current local electronic newspaper service aims at the service itself. Therefore, the information does not contain plenty of information. In some cases, information searching system focused on the users are not established yet. In this research, structuring process and characteristics of the Internet WWW electronic newspaper and the current service status and contents of the local newspaper have been reviewed. Construction of menu, information searching system and reference mannual for users of 6 local newspapers have been analyzed to secure efficient service for users.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.32 no.8C
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• pp.675-680
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• 2007

This paper presents a new method for classification of underwater transient signals, which employs frame-based decision with Mel Frequency Cepstral Coefficients(MFCC). The MFCC feature vector is extracted frame-by-frame basis for an input signal that is detected as a transient signal, and Euclidean distances are calculated between this and all MFCC feature. vectors in the reference database. Then each frame of the detected input signal is mapped to the class having minimum Euclidean distance in the reference database. Finally the input signal is classified as the class that has maximum mapping rate in the reference database. Experimental results demonstrate that the proposed method is very promising for classification of underwater transient signals.

• Journal of the Korean Geographical Society
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• v.45 no.2
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• pp.201-220
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• 2010

Geographical name is not only a spoken or written language that has been constructed as a linguistic element, but it is also a geographical phenomenon and a cultural element. Based upon this consciousness, the purpose of this paper is to examine current classification and management systems of the geographical names in Korea and to propose a new alternative classification and maintenance of the geographical names. In particular, the paper suggests three categories for the type classification of the geographical names: morpheme, linguistic change, and contestation types. In turn, this paper investigates the index of the geographical names contained in THE NATIONAL ATLAS OF KOREA (2007) on the basis of the preceding classification types in order to unveil the practical problems and limitations of the current classification articulated in the national atlas. This paper also proposes a new classification of the geographical naming that reflects the divisions of front and back morpheme of geographical names. Finally, from the discussions with the reinforcement of National Committee on Geographical Names, this paper invokes administrative and institutional protection and systematical management of the contesting and unofficial small scaled geographical names that have been set apart from the current geographical name standardization.

• Journal of the korean veterinary medical association
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• v.34 no.10
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• pp.715-725
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• 1998

우리 사람들은 자신의 생각을 다른 사람들에게 전하고자 할 때 언어를 주로 이용하고 보조적인 수단으로 몸짓을 한다. 사용하는 언어가 달라 소통이 어려울 때는 부득이 몸짓으로만 서로 의견을 나누게 되는데 손짓과 발짓은 물론 얼굴의 표정까지 동원된다. 물론 언어를 이용한 의사전달 만큼 정확하지도 못하고 시간적으로도 효율적이지 못하지만 그런 대로 급한 문제는 해결할 수 있는 경우가 않다. 동물들이 서로의 의사소통을 위하여 어떤 형태의 언어 및 언어에 가까운 음성기호를 이용할 능력이 있는지에 대하여는 학자들 간에도 논란이 계속되고 있으나 분명한 것은 어떤 방법으로든 동물들도 제나름대로 자신의 의사를 전달하고 또한 상대편이 전하고자 하는 뜻을 파악하여 이에 적절히 대처를 한다는 점이다. 이런 점에서 동물들을 대상으로 하는 학문인 수의분야에서는 우리 인간들에게 익숙한 언어와 행동이 아닌 동물들의 독특한 의사전달 방법을 정확히 이해하는 것이 무엇보다도 중요하다는 점을 인식하는 것이 필요하다 동물의 행동 하나 하나는 인간의 행동과 마찬가지로 나름대로의 의미를 지니고 있다. 이러한 동물의 행동을 인간의 눈 높이에서가 아닌 동물이 표현하고자 하는 행동 언어적인 측면에서의 이해가 필요한 것이다. 야생동물의 행동양식에 대한 연구는 생래학적으로 비교적 많이 이루어진 편이나 가축화된 동물들에 대하여는 체계적이고 비교학적인 연구가 아직도 부족한 실정이다. 특히 우리 나라에서는 이 분야에 대한 연구는 물론 외국의 연구내용에 대하여도 적극적인 소개가 이루어지지 못하였고 아울러 여러 분야에 실제 적용은 더욱 어려웠다. 동물의 건강을 책임지고 있는 우리 수의 분야는 물론, 가축을 사양하는 축산학 분야 및 모든 동물관련 분야에서 효율적이고 바람직한 동물과 인간의 관계를 구축하기 위하여는 무엇보다도 동물의 행동을 인간의 언어사용 측면에서 이해하려는 노력이 필요하다 하겠다. 이러한 일차적인 필요성에 조금이나마 도움이 되고자 하는 바람으로 외국문헌을 중심으로 인간의 생활과 밀접한 관계를 지닌 여러 동물들의 행동과 그 의미를 소개하고자 한다. 아울러, 소개되는 내용은 Domestic Animal Behavior for Veterinarians and Animal Scientists (제3판, Katherine A. Houpt 지음), Animal Behavior (Tim Halliday 지음), Canine and Feline Behavior Problems(Stefanie Schwartz 지음), Journal of Conpendium on Continuing Education for the Practicing Veterinarian,그리고The Merck Veterinary Manual의 Behavior와 같은 참고문헌에 크게 의존하여 기술된 것임을 밝힌다.

• Journal of Science and Technology Studies
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• v.1 no.2 s.2
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• pp.399-422
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• 2001

Models for human cognition currently discussed in cognitive science cannot be appropriate ones. The symbolic model of the traditional artificial intelligence works for reasoning and problem-solving tasks, but doesn't fit for pattern recognition such as letter/sound cognition. Connectionism shows the contrary phenomena to those of the traditional artificial intelligence. Connectionist systems has been shown to be very strong in the tasks of pattern recognition but weak in most of logical tasks. Brooks' situated action theory denies the. notion of representation which is presupposed in both the traditional artificial intelligence and connectionism and suggests a subsumption model which is based on perceptions coming from real world. However, situated action theory hasn't also been well applied to human cognition so far. In emphasizing those characteristics of models I refer those models 'left-brain model', 'right-brain model', and 'robot model' respectively. After I examine those models in terms of substantial items of cognitions- mental state, mental procedure, basic element of cognition, rule of cognition, appropriate level of analysis, architecture of cognition, I draw three arguments of embodiment. I suggest a way of unifying those existing models by examining their theoretical compatability which is found in those arguments.

• The Journal of the Acoustical Society of Korea
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• v.41 no.2
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• pp.192-198
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• 2022

As an effective weapon system for anti-submarine warfare, DIrectional Frequency Analysis and Recording (DIFAR) sonobuoy detects underwater targets via beamforming with three channels composed of an omni-direcitonal and two directional channels. However, ambient noise degrades the detection performance of DIFAR sonobouy in specific direction (0°, 90°, 180°, 270°). Thus, an ambient noise redcution technique is proposed for performance improvement of acoustic target detection of DIFAR sonobuoy. The proposed method is based on OTA (Order Truncate Average), which is widely used in sonar signal processing area, for ambient noise estimation and Wiener filtering, which is widely used in speech signal processing area, for noise reduction. For evaluation, we compare mean square errors of target bearing estmation results of conventional and proposed methods and we confirmed that the proposed method is effective under 0 dB signal-to-noise ratio.

• Food Science and Preservation
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• v.18 no.5
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• pp.786-794
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• 2011

To investigate the sanitary-quality level of commercial kimchi in South Korea, the pH, acidity, and microbial-flora changes in the kimchi were determined. Samples of kimchi produced by three different manufacturers (a small grocery store, a small/medium-sized enterprise, and a large food company) were collected. Freshly made kimchi was purchased and fermented at $10^{\circ}C$ for 10 days. The pH of the commercial kimchi on the purchased day was approximately pH 5.8, and that on the $10^{th}$ day of fermentation was ${\simeq}pH$ 4.1. The kimchi purchased from a large company showed a more rapid decline in pH level during fermentation. The saltiness of the kimchi purchased from a medium-sized company was slightly higher than those of the other commercial kimchi samples. The saccharinity index of the kimchi produced by a small grocery store was higher than those of the other samples, and its value deviation was also higher than those of the other commercial kimchi samples. A higher total viable-cell count and a higher lactic-acid bacteria (LAB) count were detected in the kimchi from the large food company at the beginning of fermentation compared to the samples of the two other kimchi manufacturers. The highest cell numbers of gram-positive bacteria (except LAB) and coliform bacteria were detected from the small-grocery-store kimchi, but the coliform bacteria count gradually decreased during fermentation although such bacteria were still detected until the $10^{th}$ day of fermentation. In contrast, coliform bacteria were not detected in the samples from the medium-sized and large food companies. Yeast, which is detected in over-ripened kimchi, was detected in the unfermented kimchi from the small grocery store, which had a below-0.36% acidity level. The gram-positive bacteria (except LAB) that were detected in all the tested commercial kimchi samples were determined to be Bacillus spp., and the gram-negative bacteria were determined to be Escherichia coli, Enterobacter spp., Sphingomonase spp., and Strenophomonas spp. The proportions of all the aforementioned bacteria in the kimchi samples, however, were different depending on the samples that were taken. These results indicate that a more sanitary kimchi production process and a more systematic kimchi production manual should be developed to industrialize and globalize kimchi.

• Phonetics and Speech Sciences
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• v.11 no.1
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• pp.29-40
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• 2019

The paper investigates the minimal pair of Korean phonemes quantitatively. To achieve this goal, I calculated the number of consonant minimal pairs in the syllable-initial position as both raw counts and relative counts, and analyzed the part of speech relations of the two words in the minimal pair. "Urimalsaem" was chosen as the object of this study because it was judged that the minimal pair analysis should be done through a dictionary and it is the largest among Korean dictionaries. The results of the study are summarized as follows. First, there were 153 types of minimal pairs out of 337,135 examples. The ranking of phoneme pairs from highest to lowest was 'ㅅ-ㅈ, ㄱ-ㅅ, ㄱ-ㅈ, ㄱ-ㅂ, ㄱ-ㅎ, ${\ldots}$, ㅆ-ㅋ, ㄸ-ㅋ, ㅉ-ㅋ, ㄹ-ㅃ, ㅃ-ㅋ'. The phonemes that played a major role in the formation of the minimal pair were /ㄱ, ㅅ, ㅈ, ㅂ, ㅊ/, in that order, which showed a high proportion of palatals. The correlation between the raw count of minimal pairs and the relative count of minimal pairs was found to be quite high r=0.937. Second, 87.91% of the minimal pairs shared the part of speech (same syntactic category). The most frequently observed type has been 'noun-noun' pair (70.25%), and 'vowel-vowel' pair (14.77%) was the next ranking. It can be indicated that the minimal pair could be grouped into similar categories in terms of semantics. The results of this study can be useful for various research in Korean linguistics, speech-language pathology, language education, language acquisition, speech synthesis, and artificial intelligence-machine learning as basic data related to Korean phonemes.