A Multivariate Prediction Copula Model to Characterize the Expenditure Categories in Tourism

2020 ◽  
pp. 109634802097326
Author(s):  
Juan Gabriel Brida ◽  
Bibiana Lanzilotta ◽  
Leonardo Moreno ◽  
Florencia Santiñaque
Keyword(s):  
Copula Model ◽  
Multivariate Statistical ◽  
Empirical Results ◽  
Main Variable ◽  
Multivariate Statistical Model ◽  
Multivariate Prediction ◽  
Key Variables ◽  
Using Data ◽  
Two Stages ◽  
Expenditure Pattern

The aim of this article is to introduce a multivariate statistical model that represents the expenditure of tourists disaggregated by categories. The model is applied to study the distribution of the expenditure of cruise passengers in Uruguay, using data of the 2016-2017 cruise season survey (collected by the Ministry of Tourism). Given the mixed distribution in each component of the main variable, the model is implemented in two stages and using copulas to obtain a conditional distribution of the different items of expenditure, characterizing the dependence between them. The empirical results show that the key variables that determine the average spending of cruise tourists are their residence and the port of arrival of the cruise. The parameters representing dependence of the copula show moderate association between the different categories of expenditure, in particular for cruisers disembarking in Montevideo, the capital of Uruguay. In addition, it can be noted that the expenditure pattern in each item shows time dependence. In general, the empirical results show that a cruiser that spends more on one item is likely to spend more (less) on a complementary (noncomplementary) items of expense.

Toward a Theory of Constitutional Amendment

1994 ◽  
Vol 88 (2) ◽  
pp. 355-370 ◽  
Author(s):  
Donald S. Lutz
Keyword(s):  
Comparative Study ◽  
Political Science ◽  
Empirical Analysis ◽  
Constitutional Amendment ◽  
Constitutional Design ◽  
Empirical Verification ◽  
American States ◽  
Key Variables ◽  
Using Data ◽  
Cross National

Constitutional design proceeds under the assumption that institutions have predictable consequences, but modern political science has not pursued the empirical verification of these predicted consequences with much vigor. I shall attempt to link the theoretical premises underlying one important aspect of constitutional design, the amendment process, with the empirical patterns revealed by a systematic, comparative study of constitutions. An examination of all amendments in the 50 American states since 1776 reveals patterns that are then confirmed using data from 32 national constitutions. The interaction of the two key variables affecting amendment rate can be described by an equation that generates predicted amendment rates close to those found in the cross-national empirical analysis. A constitution's length measured in number of words, the difficulty of an amendment process, and the rate of amendment turn out to have interlocking consequences that illuminate principles of constitutional design.

scholarly journals Is there a growing social acceptance of earnings inequalities in Poland?

2018 ◽  
Vol 21 (8) ◽  
pp. 79-88
Author(s):  
Paweł Kumor
Keyword(s):  
Economic Growth ◽  
Social Acceptance ◽  
Gdp Growth ◽  
Gini Coefficients ◽  
Second Stage ◽  
Economic Level ◽  
Per Capita ◽  
Using Data ◽  
Two Stages

In our studies, we deal with the estimating of the optimal ranges of earnings – the optimal Gini indexes which are favourable to the maximisation of GDP growth in Poland. We suspect that the optimal Gini coefficients expressing the whole of society’s acceptance of earnings inequalities can increase. In the article, we formulated a hypothesis on society’s habituation to increasing earnings disparities. We verified the hypothesis on the basis of the model of economic growth using data from 1970 to 2007. We carried out econometric studies in two stages. In the first stage, we estimated the optimal Gini coefficients for short subsequent sub-periods. In the second stage, we studied the character of changes in the optimal Gini coefficients. In the studies, we proved the hypothesis on society’s habituation to increasing earnings disparities. The optimal Gini coefficients increase along with the increase of differences in earnings and the increase of the economic level per capita. The growth of the optimal Gini coefficients may be slowed down.

scholarly journals Key Determinants of Organic Food Consumption: The Case of Olive Oil in Spain

HortScience ◽  
2018 ◽  
Vol 53 (8) ◽  
pp. 1172-1178 ◽  
Author(s):  
Manuela Vega-Zamora ◽  
Francisco José Torres-Ruiz ◽  
Manuel Parras-Rosa
Keyword(s):  
Olive Oil ◽  
Major Effect ◽  
Intent To Purchase ◽  
Product Consumption ◽  
Consumer Benefits ◽  
Quality Product ◽  
Key Variables ◽  
Using Data ◽  
Organic Food Consumption ◽  
Perceived Costs

The literature on organic consumer behavior has provided some knowledge about the main constructs and variables related to the purchase and consumption of organic foods and could be used to plan strategies to increase demand. However, the recommendations are not clear, varying among different authors, products, and markets; so, it seems necessary to study each case separately. This study aims to isolate the key variables that could influence the purchase of organic olive oil in the Spanish market and to analyze which of these variables have a major effect on the intent to purchase. Using data from a survey of 800 individuals, variables involved in the purchase decision process are included in a linear regression model of latent classes. The results indicate that the product consumption patterns do not respond to a uniform consumption profile but point to a coexistence of groups of people with different propensities to buy and different sensitivities to different commercial stimuli. The main conclusion is that the most effective actions to develop demand should focus on directly linking consumption of the product to consumer benefits such as leading a healthier life, eating a higher-quality product, or enjoying nature, rather than to other variables such as difficulties, perceived costs, or confidence in the certification process.

THE COVID-19 FINANCIAL PROBLEMS AND ASPECTS OF AUDIT QUALITY ASSURANCE IN GEORGIA

2021 ◽  
Vol 16 (1(21)) ◽  
pp. 22-31
Author(s):  
David Bidzinashvili
Keyword(s):  
Audit Quality ◽  
International Standards ◽  
Time Interval ◽  
Second Stage ◽  
The World ◽  
Main Variable ◽  
The Subject ◽  
High Level ◽  
Two Stages ◽  
Working Out

The new Corona-virus and the contagious disease which it causes, the so called COVID 19, put forward the serious challenges for many countries all over the world and for Georgia among them. Almost the whole world is facing very serious obstacles on the international and national levels. Too many problems emerged in the world countries. To resist against the new disease has become the main priority for each country. The global processes caused by the pandemics have influenced the audit service as well. The uncertainty and unpredictability caused the new risks of deficiencies and activated already existed ones in the new environment. The situation became more complicated due to the fact that it can happen that the auditors do not consider the mentioned risks in the process of planning for audits or the risks may be considered mistakenly. The firms and other economical institutions in which the audit is carried out are obliged to adopt the new rules and changing environments in which their businesses function; they should change the rules of fulfilling the operation, preparing the financial accounts, the processes of their representing the information processes, safety of information shown in the financial accounts, the rules of their preparing; they also evaluate the possibilities of keeping on their activities in the nearest future. The qualified performing of the audit implies the basical elemenst which helps to create such environment where the possibility of the high level audit will be at the maximum. Implementing the quality control implies that such system will include two stages; each of them is directed towards providing the audit processes according the international standards There are several types of the quality improvement system. In all of them the main variable value represents the amount of costs for the proper system. All countries choose the system which provides benefits taking the costs into consideration. There are four main stages in the process of implementation the system which will ensure the high quality audit. Here are four main stages shown in the process of implementation:  The first stage: to carry out diagnostic observation;  The second stage: stating the view;  The third sage: working out the system;  The fourth stage: implementation of the system. The firms and other economical institutions where the audit is carried out are obliged to be reliable with their activities in the changing situation in which their businesses function. The subjects change the rules of carrying out the usual operations, change the open information given in the financial accounts, and estimate the possibilities of maintaining the existing possibilities for the nearest future. It is important to revise some standards out of Audit International Standards and to make them fit for revealing and assessing the risks of essential mistakes and discrepencies. The controlled variation of the standard regulates such issues as the newly corrected risks caused by influences of COVID-19 pandemic on the planned approaches to the audit and also, evaluation of the risks already defined and making changes in them taking into consideration the influence of the errors in the risk evaluations and influence made upon the planned evaluations and audits the changes of which will influence the evaluations of the risks in the inner control of the subject on the previously made imagination of the control environment, in order to define the measures to be taken in order to change the reactions to the mistakes using different measures in order to reach the trustful mechanisms to rely on. International standards of audit– answering to the assessed risks, the checked variation of the standard implies that it maybecome necessary to change the measures of reaction to the changes in the circumstances in order to obtain enough reliable measures and activities to control the situation by means of enough auditory evidences. The auditor has responsibilities to take into consideration that largening the deadlines will cause growth of the period and the risks of the dates of events which will happen in the time interval between accountability date and the date of the conclusion made by audit, the audit is also responsible for any event taking place later in relation to the Covid-19 situation. He is responsible also for evaluation of the fact about financial information. The enterprise functioning within nowadays complex environment taking into consideration the situation of COVID 19, should consider such priority issues as the uncertainty accompanying the Covid situation, related covenants, and others which accompany the pandemic period, among them the region, the financial state of customers and dealers, liquidating and paying capacity. During the process of the risk assessments it should considered that Covid 19 pandemic greatly influenced the global economics and the separate branches such as hotels business, retail sail, tourism and others. As a result of pandemic, it is possible that the number of audit considerations and thee circumstances can modify them which can be conditioned by different circumstances and the audit will state if there are incorrectable improper conditioned due to the circumstances. The audit will make it certain there are unimprovable mistakes which apart and together are essential for the financial accountability and the auditor will conclude that they cannot acquire the proper conditioned which apart or together could be essential financial accounts or the audit will conclude that they are not able to the essential accountability. Important researches were led to assess the appeared situation and it was concluded that the COVID 19 pandemic had influenced the financial situation which showed that the specific actions and procedures became complicated.

144 The Epidemiology of Hoof-related Lameness in Western Canadian Feedlot Cattle

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 81-82
Author(s):  
Sarah E Erickson ◽  
Murray Jelinski ◽  
Karen S Schwartzkopf-Genswein ◽  
Calvin Booker ◽  
Eugene Janzen
Keyword(s):  
North Carolina ◽  
Total Population ◽  
Health Management ◽  
Statistical Significance ◽  
Feedlot Cattle ◽  
Foot Rot ◽  
Digital Dermatitis ◽  
Multivariate Statistical ◽  
Multivariate Statistical Model ◽  
Control And Prevention

Abstract The epidemiology of hoof-related lameness (HRL) in western Canadian feedlots, with a focus on digital dermatitis (DD), was described and analyzed to help inform recommendations on lameness control and prevention in western Canadian feedlot cattle. The retrospective data in this study were accessed from 28 western Canadian feedlots that placed cattle in 2014–2018, inclusive. The total population for this study was 1,796,176 cattle, with an annual placement average of 12,830 cattle per feedlot. These data were accessed through iFHMS Consolidated Database, provided by Feedlot Health Management Services by TELUS Agriculture, and manipulated using Microsoft® Office Access 365 ProPlus and Microsoft® Office Excel 365 ProPlus. Epidemiological analyses determined that lameness accounts for 25.7% of all treatments in western Canadian feedlots. Of those treatments, 71.7% are localized to the hoof, corresponding to 18.6% of all treatments. The most common HRL diseases are infectious bovine pododermatitis [foot rot (FR)]; digital dermatitis (DD), also known as hairy-heel wart or strawberry foot rot; and toe-tip necrosis syndrome (TTNS). These diseases account for 89.6%, 7.9% and 2.4% of HRL, respectively. Between 2014 and 2018, HRL prevalence ranged between 1.93% and 3.09% of the population, with FR consistently having the highest prevalence and TTNS the lowest. HRL and DD were tested for their associations with several animal-level risk factors using © Ausvet 2021 Epitools software. The resultant crude, univariate odds ratio values, evaluated at 95% confidence, are summarized in Table 1. Based on this analysis, acquisition source has the largest influence on the odds of developing HRL and DD, followed by population size, and placement quarter. Using SAS® (Version 9.4, SAS Institute Inc, Cary, North Carolina) statistical software, these preliminary findings will be subjected to a multivariate statistical model, which will provide adjusted OR values and statistical significance for the data in this study.

scholarly journals Technical Inefficiency Effects in Agriculture—A Meta-Regression

2016 ◽  
Vol 8 (2) ◽  
pp. 109 ◽  
Author(s):  
Justice G. Djokoto ◽  
Francis Y. Srofenyo ◽  
Akua A. Afrane Arthur
Keyword(s):  
Policy Implications ◽  
Quantitative Review ◽  
Technical Inefficiency ◽  
Second Stage ◽  
Statistical Inferences ◽  
Vote Count ◽  
Study Characteristics ◽  
Key Variables ◽  
Meta Regression ◽  
Using Data

<p>A number of studies have examined the effect of study characteristics on mean technical efficiency as the dependent variable. This article departs from these earlier studies by using second-stage inefficiency covariates as key exploratory variables and study characteristics as control variables in a meta-regression. Unlike the vote count method of quantitative review, the parameters of the key variables have desirable properties and enable statistical inferences to be drawn. Additionally, the dependent variable employed is mean technical inefficiency. This is demonstrated using data on technical inefficiency of primary studies in Ghanaian agriculture, fitted to fractional regression models. The appropriate functional form of the fractional regression model is discussed with policy implications.</p>

Alternative Approaches to Analyzing SWAT Data

1987 ◽  
Vol 31 (1) ◽  
pp. 63-66 ◽  
Author(s):  
David W. Biers ◽  
Philip J. Masline
Keyword(s):  
Rating Scale ◽  
Memory Task ◽  
Task Demands ◽  
Conjoint Measurement ◽  
Multivariate Statistical ◽  
Alternative Approaches ◽  
Highly Correlated ◽  
Using Data ◽  
Individual Scale ◽  
The Individual

The present study sought to determine the sensitivity of three alternative approaches to deriving a workload composite measure based upon data gathered using the Subjective Workload Assessment Technique (SWAT) and to determine through the use of multivariate statistical procedures (MANOVA) if anything is to be gained by retaining the individual scale information of SWAT. The three rating scale dimensions of SWAT (time load, mental effort load, psychological stress load) were combined into a single workload composite using three techniques: conjoint measurement; a simple sum of the three scales weighted equally; an empirically determined weighted-linear combination of the three scales (from MANOVA). Using data gathered by having subjects perform a continuous memory task under twelve levels of task difficulty, it was found that the three composite measures were equally sensitive and highly correlated (the minimum correlation among the three composites being 0.9913). The results of the MANOVA performed on the same data indicated that the individual scales of SWAT were differentially sensitive to different task demands and that individual scale information should be retained rather than rely on a simple composite.

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