• 제목/요약/키워드: Symbolic regression

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An investigation and forecast on CO2 emission of China: Case studies of Beijing and Tianjin

  • Wen, Lei;Ma, Zeyang;Li, Yue;Li, Qiao
    • Environmental Engineering Research
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    • 제22권4호
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    • pp.407-416
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    • 2017
  • $CO_2$ emission is increasingly focused by public. Beijing and Tianjin are conceived to be a new economic point of growth in China. However, both of them are suffering serious environmental stress. In order to seek for the effect of socioeconomic factors on the $CO_2$ emission of this region, a novel methodology -symbolic regression- is adopted to investigate the relationship between $CO_2$ emission and influential factors of Beijing and Tianjin. Based on this method, $CO_2$ emission models of Beijing and Tianjin are built respectively. The models results manifested that Beijing and Tianjin own different $CO_2$ emission indicators. The RMSE of models in Beijing and Tianjin are 255.39 and 603.99, respectively. Further analysis on indicators and forecast trend shows that $CO_2$ emission of Beijing expresses an inverted-U shaped curve, whilst Tianjin owns a monotonically increasing trend. From analytical results, it could be argued that the diversity rooted in different development orientation and the mixture of different natural and industrial environment. This research further expands the investigation on $CO_2$ emission of Beijing and Tianjin region, and can be used for reference in the study of carbon emissions in similar regions. Based on the investigation, several policy suggestions are presented.

The Apparel Purchasing Behavior of Adult Female Group Segmented by Their Materialism

  • Lee, Ok-Hee
    • The International Journal of Costume Culture
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    • 제3권3호
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    • pp.246-261
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    • 2000
  • The purpose of this study was to investigate the apparel purchasing behavior of adult women consumer groups divided by materialism. The specific objects of this study were ; 1) to examine the degree of materialism, impulsive buying, and conspicuous consumption. 2) to examine the correlation between impulsive buying, materialism, and conspicuous consumption, and to examine the relative influences of impulsive buying, materialism affecting conspicuous consumption. 3) to classify groups according to the level of the propensity for materialism, and to examine the clothing purchasing behavior of the divided groups. Data were administered to 357 adult women living in Sunchol from June to July 1999. For analysis of the data, factor analysis, one-way ANOVE, duncan's multiple range test, frequency and χ²-test were employed. The results of this study were summarized as follows. 1. Materialism and impulsive buying have shown higher than middle score, and conspicuous consumption has shown similar to middle score. 2. The correlation between materialism, impulsive buying, and conspicuous consumption has shown similar to middle score. The higher the materialism and experience of impulsive buying was, the higher was the conspicuous consumption. According to the results of regression analysis examining the relative influence of variables affecting conspicuous consumption. According to the results of regression analysis examining the relative influence of variables affecting conspicuous consumption, the relative importance of the variables were in the order of ; success-symbolic materialism, life-centered materialism, happiness-pursuing materialism, in the order of ; success-symbolic materialism, life-centered materialism, happiness-pursuing materialism, impulsive buying and their explanatory power totalled 35.2%. 3. Evaluating attributes of product, the type of purchasing store, the place of purchasing, the need of high class department store, purchasing price range, and accompanying people when purchasing were the factors influencing the apparel purchasing behavior.

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A Study on Symbolic Meanings and Aesthetic Senses of Henna Design (헤나디자인의 미적 특성과 상징적 의미 연구)

  • Hong, Eun-Ju;Geum, Key-Sook
    • Journal of the Korean Society of Costume
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    • 제62권3호
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    • pp.29-38
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    • 2012
  • The earliest of the Cultural forms have utilized different methods of artistic expression and aesthetic senses such as the Tattoo that symbolized the adornment of the human body. when viewing from the perspective of postmodern art and design, these cultural forms were redefined as a regression and intertextuality, a modern interpretation of Henna that had a subversive significance. Specifically, Henna design quickly emerged as a new style in fashion art which represented a postmodern phenomenon. It was introduced as a fashion style in korea about 10years ago. since then, the henna fashion trends is growing rapidly in the domestic market. However, It is growing without our unique identity due to indiscriminate and excessive industrialization. This study of Henna design, (similar to the art of Tattooing) sees from a cultural and regional perspective of orgin. This study interprets henna as a fashion style and analyzes symbolic meaning and aesthetic senses today with a clear definition of henna Design. from now on It's purpose is to establish the Korean Henna culture and the possibility of it being the fashion style that contains a unique atmosphere.

A Study on Cognition of Credit Card and Shopping Value Based on the Consumption Orientation (소비성향에 따른 신용카드인식 및 쇼핑 가치에 관한 연구)

  • Seo, In-Joo
    • Journal of Families and Better Life
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    • 제30권3호
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    • pp.105-118
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    • 2012
  • This study aims to recognize cognition of credit card and shopping value in contemporary society, cognition of credit card and shopping value according to types of consumption orientation, and factors that influence cognition of credit card and shopping value, and ultimately provide a foundation for establishing proper shopping value. A total of 453 women and men residing in Seoul have been set as research object in order to achieve the purpose of the study. The data was analyzed by Cronbach' alpha, frequencies, percentile, mean, factor analysis, K-mean cluster analysis, t-test, ANOVA and Duncan's multiple range test, multiple linear regression. All analysis progress was done by spsswin12.0 statistics program. A summary of this research goes as follows: First, categorization of consumption orientation lead to two clusters of rational and symbolic & conspicuity consumption patterns and cognition of credit card was categorized into positive and negative cognition and shopping value was categorized into hedonic shopping value, utilitarian shopping value and time-save shopping value. Second, rational shoppers had high utilitarian shopping values and symbolic & conspicuity shoppers had high both hedonic shopping values and utilitarian shopping values. Third, the most influential factor in hedonic shopping value and utilitarian was consumption orientation. In conclusion, this research has showed that cognition of credit card and shopping value according to types of consumption orientation patterns varied, and that consumption orientation was an influential factor on cognition of credit card and shopping value.

The Multi-Faceted Influence of Price on Consumers' Purchasing Process of Apparel Products - Relationships with Attitudinal and Behavioral Variables - (다면적인 가격지각이 의복구매과정에 미치는 영향 - 구매태도 및 행동과의 관계를 중심으로 -)

  • 이규혜;이은영
    • Journal of the Korean Home Economics Association
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    • 제40권9호
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    • pp.1-15
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    • 2002
  • The multi-faceted influence of price on consumers' purchasing process of apparel products: Relationships with attitudinal and behavioral variables Price has a significant relationship to clothing products not only because of its practical, emotional and symbolic attributes but also because of its wide range and frequent changes. The purpose of this study was to identify the multi-faceted influence of price on consumers' purchasing process of clothing products. Six types of price-perceptions were related to various attitudinal and behavioral variables in a clothing purchase. A questionnaire was developed and data were collected from 720 adult women living in Seoul. Factor analysis, multiple regression, t-test and canconical correlation were employed to analyze the data. Low price consciousness was negatively related to product-oriented aspects of clothing and effected the one-price sale, visiting public markets and using interpersonal sources of price information. Value for money consciousness was positively related to product-oriented aspects of clothing and consumers' age or marriage and effected price considerations at the on-purchase and post-purchase stage. Price-quality inference was related to product-oriented and market-oriented aspects of clothing while price-prestige inference was related to visual and symbolic aspects of clothing and effected normal-price purchasing. Sale proneness was related to market-oriented aspects of clothing and effected seasonal sale price purchasing and price mavenism was related to market-oriented and visual aspects of clothing and effected price considerations at the pre-purchase stage.

Comparison of Linear and Nonlinear Regressions and Elements Analysis for Wind Speed Prediction (풍속 예측을 위한 선형회귀분석과 비선형회귀분석 기법의 비교 및 인자분석)

  • Kim, Dongyeon;Seo, Kisung
    • Journal of the Korean Institute of Intelligent Systems
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    • 제25권5호
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    • pp.477-482
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    • 2015
  • Linear regressions and evolutionary nonlinear regression based compensation techniques for the short-range prediction of wind speed are investigated. Development of an efficient MOS(Model Output Statistics) is necessary to correct systematic errors of the model, but a linear regression based MOS is hard to manage an irregular nature of weather prediction. In order to solve the problem, a nonlinear and symbolic regression method using GP(Genetic Programming) is suggested for a development of MOS for wind speed prediction. The proposed method is compared to various linear regression methods for prediction of wind speed. Also, statistical analysis of distribution for UM elements for each method is executed. experiments are performed for KLAPS(Korea Local Analysis and Prediction System) re-analysis data from 2007 to 2013 year for Jeju Island and Busan area in South Korea.

Effects of Benefit Sought of Food Products on Purchase Intention and WOM Intention on SNS - Focused on SNS WOM Information Characteristics as Mediator - (SNS 상에서의 외식상품 추구편익이 구매의도 및 구전의도에 미치는 영향 - SNS 구전정보 특성의 매개효과를 중심으로 -)

  • Han, Ji-Soo;Joung, Yang-Sik;Lee, Hyoung-Ju
    • Culinary science and hospitality research
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    • 제22권4호
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    • pp.302-318
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    • 2016
  • The purpose of this study was to verify the effects of benefit sought of food products on SNS-WOM information characteristics, purchase intention, and SNS-WOM with regards to food products. In addition, the mediating role of SNS-WOM information characteristics was also examined. A survey was conducted from March 10th to 30th using an SNS based convenience sampling method. A total of 350 responses were collected, of which 326 were used for analysis, after excluding responses containing missing data. Multiple regression and hierarchical regression analyses were conducted to verify the hypotheses. The results from this study are as follows. First, it was found that diversity and utilitarian benefits of food products had a greater effect on consensus of SNS than the symbolic and experimental benefits. However, symbolic and experimental benefits of food products had a greater effect on neutrality of SNS than the diversity and utilitarian benefits. Second, only consensus of SNS-WOM information characteristics significantly impacted purchase intention of food products. Third, consensus of SNS-WOM information characteristics had a greater effect on SNS-WOM intention of food products than the neutrality of SNS-WOM information characteristics. Fourth, SNS-WOM information characteristics were found to mediate the relationship between benefit sought and purchase intention of food products. Fifth, SNS-WOM information characteristics were found to mediate the relationship between benefit sought and SNS-WOM intention of food products.

Shear strength of RC beams. Precision, accuracy, safety and simplicity using genetic programming

  • Cladera, Antoni;Perez-Ordonez, Juan L.;Martinez-Abella, Fernando
    • Computers and Concrete
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    • 제14권4호
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    • pp.479-501
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    • 2014
  • This paper presents the improvement of the EC-2 and EHE-08 shear strength formulations for concrete beams with shear reinforcement. The employed method is based on the genetic programming (GP) technique, which is configured to generate symbolic regression from a set of experimental data by considering the interactions among precision, accuracy, safety and simplicity. The size effect and the influence of the amount of shear reinforcement are examined. To develop and verify the models, 257 experimental tests on concrete beams from the literature are used. Three expressions of considerable simplicity, which significantly improve the shear strength prediction with respect to the formulations of the different studied codes, are proposed.

Shape Representation and Comparison of Architectural Drawings (건축도면의 형상재현과 비교)

  • Park S.-H.
    • Korean Journal of Computational Design and Engineering
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    • 제9권4호
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    • pp.306-314
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    • 2004
  • This paper explains the qualitative shape representation scheme and general shape analysis procedure based on shape feature categories. It takes two different groups of architectural drawings as examples and comparer them so as to confirm that the procedure is capable of comparing one group with another. In order to verify the validity of qualitative shape representation scheme, we used statistical methods as well as symbolic representation and analysis techniques. This paper concludes that two different groups of architectural drawings of similar kind are analyzed to be distinguished and specifically characterized. 11 drawings of Kahn and 13 drawings of Aalto are taken into considerations. Linear regressions are used in characterizing the shape featural relationships.

A Study of Dimensions and Related Variables on Clothing Brand Loyalty (의복 상표충성도의 차원과 관련변인에 관한 연구 -속옷을 중심으로-)

  • 정미실
    • Journal of the Korean Society of Clothing and Textiles
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    • 제21권1호
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    • pp.237-247
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    • 1997
  • The purpose of this study was 1) to explain integrated clothing brand loyalty by investigating the dimensions, 2) to investigate relationships between brand loyalty and clothing importance, aesthetic aspects of clothing, modesty, status symbol of clothing and authoritarian personality, 3) to identify the effects of demographic variables on clothing brand loyalty. The subjects were 104 female living in Kyong-Ju, Korea. The data were collected using self -administered questionnaires and analyzed by factor analysis, frequency, correlation, step- wise multiple regression and ANOVA. The results showed that 1) four dimensions of clothing brand loyalty were identified through the factor analysis: continued brand loyalty, habitual brand loyalty, symbolic brand loyalty and committed brand loyalty, 2) the status symbol of clothing, aesthetic aspects of clothing, and authoritarian personality were positively related to brand loyalty. Among these, the status symbol of clothing was the most significant variable, 3) brand loyalty was not varied by demographic variables.

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