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Perovskite형 촉매는 최근에 자동차 배기가스인 일산화탄소 및 산화질소의 제거 반응에서 귀금속 대신으로 많은 연구가 진행되고 있다. 따라서, 이 논문에서는 이러한 Perovskite형 촉매의 보다 효율적인 이용을 위해서 촉매의 구조와 성질에 관해서 연구하였고, 특히 고체 상태의 화학과 촉매의 성질과의 관계를 밝히는데 주안점을 두었다. Perovskite-type catalysts were used for the reduction of nitric oxide with carbon monoxide as an alternative to precious metals, current commercial catalyst, for the neutralization of automobile emission gases. For the effective use of Perovskite-type catalysts, the study on the structure and properties of catalysts, especially correlation of solid state chemistry with catalytic properties, are necessary.
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This paper suggests the algorithm and data structure which enable us to da concurrent search, insertion and deletion using the concept of directory and S-lock (Shared lock), X-lock (Exclusive lock), D-lock(Date lock) in height belanced search tree.
The designs of cosmetics containers has become different abruptly since the beginning of 1970. Now it becomes a fundamental object of the research in view point of satisfying consumers option along with the existing circumstances of the times. Cosmetics is not only a kind of goods but necessaries of 'our daily life, which create a beauty to the consumers and help them with skin beauty and also leads time of individuality. It is deepening to compete to develope a new material cosmetics in accordance with the requirements of new products for the skin-care depending upon cognitive alternation of consumers at the recent. The trend of the design of cosmetics containers is being changed styles into the tendency of following mostly advanced and conceptive imagination. Accordingly the purpose of this research is considered to be based on the creation of a fresh and innovatory cosmetics containers to meet the trend of rapid changeable designs with the current of times by analyzing recent consumers options, accurate market research, analysis of image map and by investigation of consumers' questionaire.
In developing the product, it is natural to develop the product of the low price as well as that of the excellent function and performance, and this eventually plays a direct role to increased the company's profit. With respect to the Color TV set, in particular, that is a main merchandise of the electronic companies, the basic goal is set at the mass production and marketing of TV set at a lower price but with the better performance than the existing products. For the sake of this study, "14″ Diagonal Multiplex Sound Color TV" has been chosen as a strategic item for the mass production and sale covering the whole classes of consumer, and this study has been concentrated on how to reasonably connect the conflicting factors between the product's price and the external design, how to reasonably link the Visual and Audio relations, how to arouse the consumer's purchasing motivations and to subsequently bring about the mass marketing.
a study on the ballistic helmet design of korean style : For this study we analyzed helmats which got from inside and outside of the country about structure, function, materials, design, etc.. To determine idel coverage, we examined anthropometry data of korean adult. Also we developed helmet design for the maximum performance. As we offered three types of helmat size, ninety nine percent of soldier will use this helmat comfortably. The weght is very light and ballistic function is excellent because material is polythlene. For more develop this study in the future, we need anthropomety data from population of soldier and we have to make mathematical model of soldier before we design helmat, futhermore we need ballistic testing which is very important data for the dcision and evaluation.
In the field of the domestic electronic products, Radio cassette is not so wide ranged but it is the products everyone wants to need and posess and moreover it is one of the most preferable products for the youth. The preference of the youth, who pursues a strong power and styles of marked imaginative individuality, has something in common all over the world. Businessmen are obliged to develop the Radio cassette suitable for preference of the youth and try to increase their profit by supplying not only overseas market but local market. Accordingly, we should escape from the existing simple image and fulfil our own reguirements of self-realization. That is, the design of Radio cassette must be equipped with high-fashioned, innovatory and individual styles and function which are well-matched for the time of personality. At the recent the style of Radio cassette "p-compo" conformed with such an image is developed and appeared. P-compo is a new combination style of Radio cassette for both images of portable cassette and component system. It is a big merit that is much helpful for the youth in a good use of leisure and their sentiments. So the purpose of the study is to understand the existing problem and look for a new direction of settlement by researching and analizing objectively prices, functions, colours and style for P-compo that is suitable to pursuit of mentality of the youth.