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| Registros recuperados: 52 | |
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| Santos,Gilmar O.; Hernandez,Fernando B. T.; Ferraudo,Antonio S.; Vanzela,Luiz S.; Santos,Duílio J. O.. |
| ABSTRACT Without effective actions to improve environmental management, water resources tend to become scarce. Thus, this study aimed to understand the processes influencing the physical, chemical, and biological properties of the water due to land uses and occupation in the Ipê stream basin, in Ilha Solteira - SP (Brazil), regarding the dependence of the analyzed variables. Monitoring of chemical, physical, and biological water quality was performed from 2006 to 2011, and the records of land use and occupation in 2011. A factorial multivariate analysis allowed us to understand that the processes in densely populated areas increased degradation of water by the input of organic loads, yet those of farming areas enhanced the degradation of the chemical and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Factor analysis; Irrigation; Land use and occupation; River basin. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300453 |
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| Davoult, D; Dewarumez, Jm; Migne, A. |
| The long-term variations of two coastal benthic communities (Eastern English Channel, France) were studied between 1979 and 1994 by means of factor correspondence analysis (FCA), trophic structure and rank-frequency diagrams (RFD). FCA identified periods of relative homogeneity and periods of strong variation in the structure of the two communities. The first community, established on heterogeneous sand, showed a multi-annual cycle Linked to grain-size variations in the sediment. As passive supplies of organic matter were not important and suspension feeders could hardly live in these conditions, the community remained poor and stable and was dominated by deposit-feeders and carnivores. The other one, a rich and diverse mussel (Mytilus edulis) bed, showed... |
| Tipo: Text |
Palavras-chave: Série à long terme; Benthos; Analyse factorielle; Diagrammes rang-fréquence; Structure trophique; Long-term series; Benthos; Factor analysis; Rank-frequency diagrams; Trophic structure. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00325/43663/43207.pdf |
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| Santos,Osmarino Pires dos; Carvalho,Ivan Ricardo; Nardino,Maicon; Olivoto,Tiago; Pelegrin,Alan Junior de; Szareski,Vinícius Jardel; Ferrari,Mauricio; Nunes,Andrei Caíque Pires; Demari,Gustavo Henrique; Lautenchleger,Francine; Souza,Velci Queiróz de; Maia,Luciano Carlos da. |
| Abstract: The objective of this work was to evaluate the consistency of the methods of Annicchiarico, Lin & Binns, Wricke, and factor analysis in identifying eucalyptus clones with stability, adaptability, and high productive potential. Eight-four clones, with three years of age, from the genetic breeding program of the company CMPC Celulose Riograndense were used. Three field experiments were carried out in a randomized complete block design, in an 84x3 factorial arragement, with 20 replicates of one plant per plot. The clones were evaluated as to diameter at breast height, plant height, and volume of wood. The methods of Annicchiarico and Lin & Binns are highly correlated with each other, and their use together with the method of Wricke is a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus; Average ranking; Experimental planning; Factor analysis; Selection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000100053 |
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| Gibson, Fiona L.; Burton, Michael P.. |
| The introduction of measurement bias in parameter estimates into non-linear discrete choice models, as a result of using factor analysis, was identified by Train et al. (1987). They found that the inclusion of factor scores, used to represent relationships amongst like variables, into a subsequent discrete choice models introduced measurement bias as the measurement error associated with each factor score is excluded. This is an issue for non-market valuation given the increase in popularity of including psychometric data, such as primitive beliefs, attitudes and motivations, in willingness to pay estimates. This study explores the relationship between willingness to pay and primitive beliefs through a case study eliciting Perth community values for... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Discrete choice models; Attitudes; Factor analysis; Measurement models; Recycled wastewater. |
| Ano: 2009 |
URL: http://purl.umn.edu/47943 |
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| Singh, Mahesh Kumar; Kapuszta, Agnes; Fekete-Farkas, Maria. |
| The agriculture has an outstanding importance both in social and economic point of view, especially in the countries where the agriculture plays a vital role in economy. This paper mainly focuses on the situation in the Central and Eastern European countries (CEECs). The share of agriculture in CEECs is more significant both in GDP and employment than in the old member states of EU. To be competitive on the single market, we have to know the advantages and disadvantages, strength and weakness of different sectors of agriculture. Traditionally, in these countries to measure the effectiveness, the partial factor analyses are used. To get more accurate overview, we need to use more wide technique to sampling measurement. This paper summarizes the measurement... |
| Tipo: Book |
Palavras-chave: Sustainability; Effectiveness; Environment; Agricultural policy; Factor analysis; Agricultural and Food Policy; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/43317 |
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| Souza, Mauricio Jorge Pinto de; Burnquist, Heloisa Lee. |
| This article presents results of a survey applied to Brazilian exporting firms to obtain primary data, which are subject to a statistical analysis about the relative importance attributed to technical barriers to trade. The methodological procedure used consisted in Rio Branco – Acre, 20 a 23 de julho de 2008 Sociedade Brasileira de Economia, Administração e Sociologia Rural factor analysis. This allowed the construction of three indexes: Traditional determinants Index - ICOND, Trade Impediments Index - IIMP and Technical requirements Index - IEXIG. The results indicated that technical requirements effects are different than other variables that affect exports. Additionally, the firms surveyed considered the IEXIG more restrictive than IIMP to their... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Technical barriers; Brazilian exports; Factor analysis; International Relations/Trade. |
| Ano: 2008 |
URL: http://purl.umn.edu/96281 |
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| Jordaan, Henry; Grove, Bennie. |
| Logistic regression is employed to analyse the factors which influence the decision of whether or not the respondent used forward pricing methods during the 2004/05 maize production season. Forward pricing methods include cash forward contracting and hedging with futures contracts and/or options, through the South African Futures Exchange (SAFEX). Based on the results, the use of forward pricing is associated with lower levels of risk aversion and higher levels of human capital. Factor analysis is employed to reduce the dimensionality of the personal reasons which help to interpret the underlying, common factor of the personal reasons why farmers are reluctant to use forward pricing methods. Three factors were extracted and were labelled “Lack of... |
| Tipo: Journal Article |
Palavras-chave: Forward pricing; Logit; Factor analysis; Agricultural Finance; Risk and Uncertainty. |
| Ano: 2007 |
URL: http://purl.umn.edu/7049 |
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| Xu, Xin-chuang; Cheng, Dong-lai; Liu, Cheng-wu. |
| Change trend of cultivated land in Hubei Province is analyzed. The years 1998-2003 are the reduction period of cultivated land; the years 2004-2007 are the increase period of cultivated land; the years 1988-2002 are the slow growth period of construction land; and the years of 2003 and 2007 are the increase period of construction land. Based on related social economic statistical data in 1988-2007, human driving forces on cultivated land and construction land in Hubei Province are analyzed quantitatively and comparatively by using SPSS software and mathematical statistical method. Result shows that driving forces have negative driving effect on cultivated land, and positive driving effect on construction land. Driving forces have significant differences of... |
| Tipo: Journal Article |
Palavras-chave: Cultivated land; Construction land; Factor analysis; Human driving force; China; Agribusiness. |
| Ano: 2010 |
URL: http://purl.umn.edu/93574 |
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| Yu, Bingxin; You, Liangzhi; Fan, Shenggen. |
| The recent surge in food prices around the world may reverse the gains of reducing hunger and poverty in the recent years. This paper employs factor and sequential typology analysis using data for 175 countries to identify groups of countries categorized according to four measures of food security: utilization, availability, accessibility and stability. Nine indicators are used for this study: calories intake, protein intake, fat intake, food production, the ratio of total exports to food imports, soil fertility, length of growing period, coefficient of variation of length of growing period and urbanization. The analysis first identifies 5 distinct food security groups characterized by food intake then further split these groups based on similarities and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food security; Factor analysis; Agricultural potential; Typology; Trade; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Development; C0; F0; O1. |
| Ano: 2009 |
URL: http://purl.umn.edu/51043 |
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| Rainey, Daniel V.; Djunaidi, Harjanto; McCullough, Stacey W.; Das, Biswa R.. |
| This study utilizes survey data analyzed at the regional level to obtain additional insights which may be left unnoticed if the analysis only considers data at the state level. The current analysis reveals that farm operators’ and/or landowners’ decision to participate in the agritourism industry in Arkansas is affected by state government infrastructure. But these infrastructures are varied among regions. The infrastructures are state government support in training the farm operators; in promotion and marketing as well as certainty and transparency in laws and regulations. State government’s sponsored trainings in agritourism along with marketing and promotion are viewed as the most important factors in all studied regions that affect operators’... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agritourism; Factor analysis; Farm Management. |
| Ano: 2010 |
URL: http://purl.umn.edu/56521 |
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| Carvalho, Flavio Leonel de; Bialoskorski Neto, Sigismundo. |
| The objective of this work was to identify the main economic and financial indicators which should be considered in the evaluation of the performance of agricultural cooperatives. Cooperatives have two dimensions, social and economic, and studies have shown that, in agricultural cooperatives, the social performance is a consequence of the economic performance. Therefore, the performance of these entities was evaluated using economic and financial indicators. Applying the Factor Analysis statistical technique to 150 financial statements of agricultural cooperatives from São Paulo state, from 2001 to 2006, it was possible to find out the level of correlation among several indicators, as well as to group them into factors. Four main factors were found by... |
| Tipo: Journal Article |
Palavras-chave: Economical indicators; Factor analysis; Performance.; Agribusiness; Agricultural Finance; Industrial Organization. |
| Ano: 2008 |
URL: http://purl.umn.edu/61736 |
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| Ling, Jing; Deng, Liang-ji. |
| By using factor analysis method and establishing analysis indicator system from four aspects including crop production, poultry farming, rural life and township enterprises, the difference, features, and types of factors influencing the rural environmental pollution in the hilly area in Sichuan Province, China. Results prove that the major factor influencing rural environmental pollution in the study area is livestock and poultry breeding, flowed by crop planting, rural life, and township enterprises. Hence future pollution prevention and control should set about from livestock and poultry breeding. Meanwhile, attention should be paid to prevention and control of rural environmental pollution caused by rural life and township enterprise production. |
| Tipo: Journal Article |
Palavras-chave: Rural area; Environmental pollution; Influencing factors; Factor analysis; Hilly area in Sichuan Province; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/113931 |
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| Qiao, Jin-jie; Zhao, Qiu-lian. |
| Relying on the relevant date from China Statistical Yearbook and Chinese Rural Statistical Yearbook, the coolabarative performance of main body of agricutlural technology innovation is evaluated by taking four –power innovation body as the sujects and by estalbishing the index system from the perspectives of inout and output. The results show serious dislocation of main body and bad collabrative performance. On the basis, the quaternary -parties motivation system cocerning agricutlural enterpises, agricutlural science and technology acanamy, rural hosueholds and governments is established. The system is capable of integrating market, sciencetific reserch and diffusion collection into a whole part and solving the seperation of agricutlural innovation... |
| Tipo: Journal Article |
Palavras-chave: Agricutlural technology innovation; Collabrative; Main body; Performance analysis; Factor analysis; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/113472 |
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| Zhu, Xiao-dong; Lu, Mei. |
| In view of the present situation of measuring a green residence just by energy saving and environmental protection, we propose that we should build the rural residence more from the farmer’s view and set up an evaluation system based on farmers satisfaction. A total of 16 factors affecting the farmers’ satisfaction degree of green energy saving rebuilding of rural residence are selected. Questionnaire survey on 110 peasant households is carried out under different situations in Guanzhong region in Shaanxi Province, so as to obtain the importance score of evaluation index. During constructing the evaluation system for farmers’ satisfaction degree, Factor Analysis Method is used to classify the related influencing factors. Subjective analysis of Analytic... |
| Tipo: Journal Article |
Palavras-chave: Green rebuilding; Farmers satisfaction degree; AHP; Factor analysis; Evaluation model; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/108436 |
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| Registros recuperados: 52 | |
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