• Title/Summary/Keyword: Functional form

Search Result 1,466, Processing Time 0.03 seconds

A Fixed Point Approach to the Stability of a Functional Equation

  • Park, Won-Gil;Bae, Jae-Hyeong
    • Kyungpook Mathematical Journal
    • /
    • v.50 no.4
    • /
    • pp.557-564
    • /
    • 2010
  • By using an idea of C$\u{a}$dariu and Radu [4], we prove the generalized Hyers-Ulam stability of the functional equation f(x + y,z - w) + f(x - y,z + w) = 2f(x, z) + 2f(y, w). The quadratic form $f\;:\;\mathbb{R}\;{\times}\;\mathbb{R}{\rightarrow}\mathbb{R}$ given by f(x, y) = $ax^2\;+\;by^2$ is a solution of the above functional equation.

A FUNCTIONAL EQUATION ON HOMOGENEOUS POLYNOMIALS

  • Bae, Jae-Hyeong;Park, Won-Gil
    • The Pure and Applied Mathematics
    • /
    • v.15 no.2
    • /
    • pp.103-110
    • /
    • 2008
  • In this paper, we obtain the general solution and the stability of the cubic functional equation f(2x + y, 2z + w) + f(2x - y, 2z - w) = 2f(x + y, z + w) + 2f(x - y, z - w) + 12f(x, z). The cubic form $f(x,\;y)\;=\;ax^3\;+\;bx^2y\;+\;cxy^2\;+\;dy^3$ is a solution of the above functional equation.

  • PDF

Assessing the Functional Status of Acute Stroke Patients using ICF Core Set-short Form (단축형 ICF 핵심지표로 측정한 뇌졸중 환자의 기능상태)

  • Kang, Jiyeon;Gong, Ju;Park, Mi-Jin;Lee, Yeo-Won;Kim, Yuri
    • Journal of muscle and joint health
    • /
    • v.20 no.1
    • /
    • pp.22-30
    • /
    • 2013
  • Purpose: The International Classification of Functioning, Disability and Health (ICF) model was proposed by the World Health Organization for enhancing interdisciplinary communication. The purpose of this study was to examine the functional status of acute stroke patients using ICF core sets-short form. Methods: A set of 15 ICF items on functional status was used by nurses for their daily nursing assessment on functional status in 44 acute stroke patients in a university hospital. Results: The highest level of function was "consciousness", while the lowest was "defecation". Compared with functional status on the first day, consciousness, ingestion, language (mental), and defecation functions were significantly improved on the 14th day. However, there was no significant changes in items on activity and participation or environmental functions. Conclusion: These findings suggest that the function-specific nursing interventions for acute stroke patients need to be developed. Future research needs to test the usefulness of ICF items as an measurement tool.

Aesthetic Characteristics of Grecian Style (그리스 스타일의 미적 특성)

  • Ham, Youn-Ja
    • Fashion & Textile Research Journal
    • /
    • v.9 no.6
    • /
    • pp.595-602
    • /
    • 2007
  • This study examined the aesthetic characteristics of Grecian style which is being considered as the representative classic of Western fashion and the transformations of those Grecian styles on the fashion of the twentieth century. This study used positive research method using literatures on art history and clothing history, fashion related publications, and magazines and websites to understand the trend of fashion designer's collections. The study results are as follows. The aesthetic characteristics of Grecian style was considered to be the ideal beauty combined with symmetry, the functional beauty combined with non-construction, and the sensual beauty combined with natural body. The ideal beauty combined with symmetry appears as a style that shows idealistic proportion of a body emphasizing high-waist based on the golden ratio and the body as a whole rather than details. The functional beauty combined with non-construction appears as perfect recreation a body in its original and natural form. The clothing takes a form that does not have any structural design and has simplified cutting and sewing. It uses pins and strings to fix up the form of clothing which is flexible and naturally draped. The sensual beauty combined with natural body is found in natural silhouette dress alluding naked body in connection with Rousseau' naturalism in neoclassic period. Throughout the twentieth century, the desire for Grecian style was conveyed by a single detail or through an array of allusive effects.

Structural and Functional Stability of the Genetic Recombinant Plasmid pCU103 in Different Water Environments

  • Kim, Chi-Kyung;Kwak, Myoung-Ja;Lee, Sung-Gie
    • Journal of Microbiology
    • /
    • v.34 no.3
    • /
    • pp.241-247
    • /
    • 1996
  • The stability of the genetically engineered microorganisms and their recombinant plasmids released in natural environments has been regarded as one of the molecular ecological topics. In this study, the recombinant plasmids pCU103 in which the pcbCD genes involved in biodegradation of biphenyl and 4-chlorobiphenyl were cloned in pBluescript SK(+) vector, were examined for their structural and functional stability in different waters at 15 $^{\circ}C$ by the methods of electrophoresis, Southern hybridization, quantification with fluorescent dye, and transformation. The recombinant plamids maintained their stabilities for about 30 days in sterilized distilled water (SDW), 15 days in autoclaved creek water (AW), 25 days in filtered and autoclaved non-sterile creek water (FAW), 4 days in Luria-Bertani (LB) broth, and less than one day in filtered non-sterile creek water (FW). The covalently closed circular (CCC) form of the plasmid was decreased and open circular (OC) form was increased as a function of incubation time, and then linear (L) form was produced to be ultimately degraded out. The degradation rates of the plasmid were proportionally correlated to trophic level of the water, and the biological factor such as DNases was found to be one of the most critical factors affecting structural and functional stability of the plasmid in non-sterile natural water.

  • PDF

The Functional Transition of Traditional Shop House in Modern age of Korea - Focused on Maehwa Marketplace in Uljin - (전래 시장옥(市場屋)의 기능적 변화특성에 관한 연구 -경북 울진군 매화1리 매화장시를 중심으로-)

  • Park, Chung-Shin;Roh, Seon-hwa;Kim, Tai-young
    • Journal of the Korean Institute of Rural Architecture
    • /
    • v.10 no.4
    • /
    • pp.33-40
    • /
    • 2008
  • This paper aims to clarify the spatial form and functional transition of Korean traditional shop house in Maehwa marketplace, Uljin. The general form of Korean traditional shop house of Maehwa marketplace was the timbered house of the tin roof built in the 1960s. As the scale of a building being comparatively small-scale, building area is $60m^2$ and the yard was mainly made behind the building. When the spatial form of Korean traditional shop house is considered, the composition of 4 by 2 is most. And in the front of a building, the shop is located, and when the back of a building prepares a residence, integration of a sales function and a habitation function is seen. The shop of Korean traditional shop house is converted into living space by change of the function, and the position is the middle of a front of building. This is considered as what inherited the Korean lifestyle. And the last, Although it is not different from the appearance of the shop house of other areas, since there are few grades of the change in comparison, the extension situation of Korean traditional shop house is recognized as an example important for future research.

  • PDF

Spatial Construction and Functional Characteristics of Market Place in Seomjin River -Focused on Gokseong, Gurye, Soonchang, Okgok Market Place- (섬진강유역 장시의 공간구성과 기능 특성에 관한 연구 -순창·곡성·구례·옥곡장시를 중심으로-)

  • Park, Chung-Shin;Kim, Tai-young
    • Journal of the Korean Institute of Rural Architecture
    • /
    • v.12 no.1
    • /
    • pp.17-24
    • /
    • 2010
  • This paper aims to clarify the spatial form and functional characteries of traditional market place in Seomjin river. The objects of this study are Gokseong, Gurye, Soonchang, and Okgok market place. The results are as follows. First, the form of the traditional market that it was open focusing on large open space of a village was maintained until now. Second, the spatial form of a market place surrounds market-shop located at the center of a market, and a permanent market-store is located in a line. Spatial element important for constituting a market place is three, market-shop, stall, and the mall of market place, and each spatial element is functioning in linkage. The unit space of market-shop is mainly determined by between pillars, and a store is opened. And the same type of industry adjoins, and market-shop's forms a fixed domain and is distributed. The stall is located with many kinds and forms at street mall, and it is taking charge of the important function of trade.

Analysis of Functional Form Groups in Macroalgal Community of Yonggwang Vicinity, Western Coast of Korea (영광 인근 해역 해조군집의 기능형군별 분석)

  • HWANG Eun Kyoung;PARK Chan Sun;SOHN Chul Hyun;KOH Nam Pyo
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.29 no.1
    • /
    • pp.97-106
    • /
    • 1996
  • Macroalgal community was analysed from December 1993 to October 1994 in Yonggwang vicinity, western coast of Korea. A total 51 species (12 green, 11 brown and 29 red algae) of marine algae were identified. Among four localities, the number of species observed was the highest as 34 species at Shimwon and the least as 31 species at Sunchanggum and Gamakdo. Seasonally, the number of species observed was the highest as 42 species in winter and the least as 18 species in summer. The species showing relatively high important value were Enteromorpha compressa, Sargassum thunbergii, Corallina pilulifera and Carpopeltis affinis, which were all common to four investigated localities. Seasonal and regional fluctuations of mean biomass was $66.0\~820.0\;g-wet\;wt/m^2$ at Hyanghado, $248.3\~886.3\;g-wet\;wt/m^2$ at Sunchanggum, $154.5\~510.2\;g-wet\;wt/m^2$ at Gamakdo and $85.0\~451.9\;g-wet\;wt/m^2$ at Shimwon, respectively. The flora investigated could be classified into six functional groups such as coarsely branched form $(41.2\%)$, sheet form $(25.5\%)$, filamentous form $(19.6\%)$, thick leathery $(7.8\%)$, crustous form $(3.9\%)$ and jointed calcarious form algae $(2.0\%)$. At the effluent area of the nuclear power plants, the algal composition of functional groups may affect species composition due to thermal pollution.

  • PDF

Development of Functional Milk and Dairy Products by Nanotechnology (나노 기술을 이용한 기능성 우유 및 유제품의 개발 연구)

  • Gwak, Hae-Su
    • Journal of Dairy Science and Biotechnology
    • /
    • v.23 no.1
    • /
    • pp.27-37
    • /
    • 2005
  • The development of functional foods started booming from several years ago in the world. The size of functional materials are in the range of micrometer level. This size can be much smaller into nanometer level to be more effective. We face some problems from the materials, such as flavor, taste, color, viscosity, etc. in functional materials. The problems can be solved by micro / nanoencapsulation technique. This paper showed some results of the research related on the technique for functional milks and dairy products. The nono / microcapsules are the form of liquid instead of solid. Coating materials used were fatty acid esters, and core materials were lactase, iron, ascorbic acid. isoflavone, and chitooligosaccharide. The ranges of capsules are from 100 nm to 200 ${\mu}$m. The sample milks added nano/microcapsules were homogeneous and prevented the defects of core materials. It was observed that nano / microcapsules in milk and dairy products were effective as functional material without defaults. It was indicated that targeted functional foods can be developed further in various foods by nanotechnology.

  • PDF

Clinical Observation of Changes in Subjective Evaluation Index and Electrogastrography Parameters of Patients with Functional Dyspepsia before and after Oriental Medical Interventions (기능성 소화불량 환자의 한방치료 전후의 주관적 평가지표와 Electrogastrography Parameters를 이용한 객관적 지표의 변화 관찰)

  • Han, Ga-Jin;Kim, Jin-Sung;Ryu, Bong-Ha
    • The Journal of Internal Korean Medicine
    • /
    • v.32 no.4
    • /
    • pp.584-598
    • /
    • 2011
  • Objectives : Functional dyspepsia is a type of disease characterized by bothersome postprandial fullness, early satiation, epigastric pain and burning without structural gastrointestinal disease. The aim of this study was to analyze the characteristics of functional dyspepsia patients and evaluate changes in symptoms, quality of life, and electrogastrography parameters before and after oriental medical interventions. Methods : We recruited forty-six functional dyspepsia patients who visited gastroenterology clinic in the oriental medicine hospital of Kyung Hee University between November 2009 and February 2011. Patients were assessed for their frequency of dyspepsia (based on short form-Leeds Dyspepsia Questionnaire: SF-LDQ), quality of life (based on functional dyspepsia-related quality of life questionnaire: FD-QoL), gastric motility (based on electrogastrography: EGG) on the first visit. Then, the effect of oriental medical interventions was evaluated using EGG on the second visit. Results : The majority of patients had symptoms of nausea and indigestion. The largest decrease in EGG parameters was found in the indigestion group. The frequency of regurgitation and postprandial EGG power % bradygastria showed a significant correlation. Also, significant correlations were found between some items of FD-QoL and some EGG parameters. Compared to the EGG parameters before oriental medical interventions, some parameters after treatment had positive results, implying the improvement of gastric motility disorder. We also found improvement of EGG parameters in both digestant medicinal group and digestant combined with qi-tonifying medicinal group. Conclusions : The results of this study suggest that clinical application of EGG can be an objective diagnostic tool in functional dyspepsia patients visiting oriental medical hospital.