• Korean Journal of Child Studies
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• v.20 no.1
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• pp.239-248
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• 1999

The purpose of this study was to examine relationships between parent-adolescent communication, family cohesion and family adaptability perceived by Korean adolescents resident in Korea (K-K) and Korean adolescents resident in America (K-A). Subjects were selected from among middle and high school, undergraduate and graduate school students in Korea (N=555) and counterpart students in Los Angeles (N=296). The survey instruments were the Parent-Adolescent Communication Inventory (Barnes & Olson, 1982) and FACES III (Bell, Olson, & Partner, 1982). Major findings were that : (1) K-A adolescents engaged in open communication with their parents more than K-K adolescents. (2) K-A families communicated about their health and life styles more frequently than K-K families, while K-K families communicated about school problems and problems with friends more than K-A families. (3) In both groups, family cohesion was related to family adaptability. That is, when family cohesion was high, family adaptability was also high. (4) When communication styles were open, perceived family cohesion and adaptability was high.

• Journal of Korean Society for Atmospheric Environment
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• v.9 no.1
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• pp.51-60
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• 1993

In order to study on the cause of visibility aggravation, we have selected the days of low-visibility observed in Seoul with haziness that was below 6km from 12 to 15 LST. According to the examinations, the number of low-visibility days satisfying the criteria is 30 days in 1989, 39 days in 1990, and 35 days in 1991, respectively. The annual number of low visibility days appears to increase mainly due to an increase in emission of air pollutants and in anthropogenic water vapor in the biosphere. The relationship between visibility and air pollutants(TSP, $NO_2, SO_2, O_3$) of selected days is also studied. Air pollution concentrations of selected days are much higher than those of other days. It is observed that the cause of visibility aggravation in Seoul is mainly smog and air pollutants. In particular, the visibility reduction and high $SO_2$ concentrations at Seoul in winter are similar phenomena that occurring with London smog, while the visibility reduction and high $O_3$ concentrations at Seoul in summer are also similar to the type of Los Angeles smog.

• Child Studies in Asia-Pacific Contexts
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• v.1 no.1
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• pp.25-38
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• 2011

The purpose of this study is to examine the attachment representations of Korean immigrant mothers in America. The subjects were 25 first-generation Korean immigrant mothers who reside in Los Angeles. The Adult Attachment Interview (George, Kaplan, & Main, 1985) was used for assessing their attachment representations. As a result, 36% of the mothers were classified as secure-autonomous (F), 52% as insecure-dismissing (Ds), and 12% as insecure-preoccupied (E). It was concluded that there were lower rates of the secure type among Korean immigrant mothers who had immigrated to the U.S. during the 70's and 80's and higher rates of the dismissing type compared to mothers in South Korea.

• Korean Journal of Child Studies
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• v.32 no.4
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• pp.63-81
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• 2011

The purpose of this study was to examine the first generation Korean-American mothers' attachment representation as well as the attachment representation of their second generation Korean-American college students. The subjects consisted of 25 first generation Korean-American mothers and 27 second generation college students residing in Los Angeles. The Adult Attachment Interview (George, Kaplan, & Main, 1985) was used for assessing attachment representation patterns. The results of this study were as follows. First, 36% of the subject mothers were classified as secure, 64% were insecurely attached and there was no unresolved/disorganized pattern in the insecure group. Second, 33% of the subject students were classified as secure. 67% were insecure on the AAI, and there was 4% unresolved/disorganized patterns in the insecure group. Third, a difference of 76% was found between the correspondence between the first generation Korean-American mothers' attachment representation pattern and the attachment representation of the second generation Korean-American college students.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.10 no.1
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• pp.21-34
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• 2002

This study is performed to secure the safety of civil aviation by establishing systematic analysis ability of Flight Data Recorder. Through this study, downloading SSFDR(Solid State Flight Data Recorder) to personal computer, editing interface file, flight data numerical analysis and regulations relayed to the aircraft with changes in destination airport in flight are performed. In the analysis, the flight data of B747-400 model aircraft between Los Angeles(KLAX) and Jeju(RKPC) was selected.

• The Journal of the Acoustical Society of Korea
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• v.6 no.3
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• pp.52-59
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• 1987

In this paper, we present a method of realizing an infinite impulse response (IIR) digital filter (DF)using linear delta modulation (LDM) as a simple analog/digital (A/D) converter. This method makes the realization of IIR digital filters much simpler than that of conventional ones because it does not require hardware multipliers and a pulse code modulation (PCM) A/D converter. Compared to the finite impulse respponse (FIR) LDMDF of Lee and Un [1] , this IIR LDMDF requires significantly less computation time.

• Journal of Community Nutrition
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• v.7 no.1
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• pp.36-41
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• 2005

A convenience samples of Korean-Canadian/American adults who lived in Pacific coast areas, were studied in 2000. Total of 130 adults of 37 ($29\%$) from Vancouver, 45 ($35\%$) from San Jose and 47 ($36\%$) from Los Angeles were analyzed by length of residence, as the shorter residence group resided for less than 20 years and the longer residence group resided for 20 years or more. It was observed that the Korean-Canadians/Americans, who resided there for almost two decades, still kept Korean foods and food-patterns very strongly, even though parents' generation showed less acculturated food patterns than children's generation. In spite of those practices, they gave high values mostly on their dietary acculturation and on educating their children about diets. However the longer residence group showed slightly less positive acculturation attitudes than the shorter one. Therefore the longer abroad seemed to make immigrants more for their children to keep dietary traditions. It is recommended that length of residence should be considered when planning dietary foodservices at nursing care systems for Korean Canadians/Americans.

• Korean Institute of Interior Design Journal
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• v.14 no.1
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• pp.11-19
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• 2005

As the world becomes more globalized thanks to the fast development of the Internet, a national identity becomes more important than ever before. Based on this, the study searches for the identity of modern American architecture through exploring the influence of modem American fine arts on the contemporary architecture. It was found that the concepts and the attributes of modern American fine arts obviously transferred into the contemporary architecture. The main concept was elimination of any kind of illusion for maximization of reality, and it was rooted Into American culture, the way of life and thinking. With the concept, the attributes were divided into two extreme poles: materiality and morphology: the former was evolved from Abstract Expressionism and Post-Minimalism and transferred into Los Angeles Avant-Garde architecture; the latter was from Pop Art and transferred into Postmodern architecture and Pop Architecture.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.48
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• pp.27-56
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• 2010

Pollution emissions from international shipping and port activities have a significant impact on public health and global climate changes. The purpose of this paper is to review the status of pollution mitigation measures implemented to date in port industry and find out some implications for Korean ports. For this aim, the clean air strategies of the world major ports including six USA ports (Los Angeles/Long Beach, Now York/New Jersey, and Seattle and Tacoma), two European ports (Rotterdam and Gothenburg) and Busan Port were considered. Various measures to reduce emission from ports are evaluated by sectors-ocean going vessels, cargo handling equipments, truck and rail-, on the basis of categories such as reduction control technologies, operational changes and market-based measures. The policy implications of this paper are as follows. First, Clean Air Act Plans of Korean ports are required as soon as possible. Second, integrated approach is required to reduce emission effectively. Finally, the effect of port-related emission reduction can be maximized when various measures are conducted on a regional basis including neighboring ports. Furthermore, regional or global-based approach is useful to guarantee the level playing field among ports.

• Journal of Microbiology and Biotechnology
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• v.16 no.11
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• pp.1661-1677
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• 2006

Rhizobium and related genera are soil bacteria with great metabolic plasticity. These microorganisms survive in many different environments and are capable of eliciting the formation of nitrogen-fixing nodules on legumes. The successful establishment of symbiosis is precisely regulated and requires a series of signal exchanges between the two partners. Quorum sensing (QS) is a prevalent form of population density-dependent gene regulation. Recently, increasing evidence indicates that rhizobial quorum sensing provides a pervasive regulatory network, which plays a more generalized role in the physiological activity of free-living rhizobia, as well as during symbiosis. Several rhizobia utilize multiple, overlapping quorum sensing systems to regulate diverse properties, including conjugal transfer and copy number control of plasmids, exopolysaccharide biosynthesis, rhizosphere-related functions, and cell growth. Genomic and proteomic analyses have begun to reveal the wide range of functions under quorum-sensing control.