Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

2009

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 1021 - 1050 of 11929

Full-Text Articles in Social and Behavioral Sciences

Examples Of Computing Power For Zero-Inflated And Overdispersed Count Data, Suzanne R. Doyle Nov 2009

Examples Of Computing Power For Zero-Inflated And Overdispersed Count Data, Suzanne R. Doyle

Journal of Modern Applied Statistical Methods

Examples of zero-inflated Poisson and negative binomial regression models were used to demonstrate conditional power estimation, utilizing the method of an expanded data set derived from probability weights based on assumed regression parameter values. SAS code is provided to calculate power for models with a binary or continuous covariate associated with zero-inflation.

Go to article

An Inductive Approach To Calculate The Mle For The Double Exponential Distribution, W. J. Hurley Nov 2009

An Inductive Approach To Calculate The Mle For The Double Exponential Distribution, W. J. Hurley

Journal of Modern Applied Statistical Methods

Norton (1984) presented a calculation of the MLE for the parameter of the double exponential distribution based on the calculus. An inductive approach is presented here.

Go to article

New Effect Size Rules Of Thumb, Shlomo S. Sawilowsky Nov 2009

New Effect Size Rules Of Thumb, Shlomo S. Sawilowsky

Journal of Modern Applied Statistical Methods

Recommendations to expand Cohen’s (1988) rules of thumb for interpreting effect sizes are given to include very small, very large, and huge effect sizes. The reasons for the expansion, and implications for designing Monte Carlo studies, are discussed.

Go to article

Generating And Comparing Aggregate Variables For Use Across Datasets In Multilevel Analysis, James Chowhan, Laura Duncan Nov 2009

Generating And Comparing Aggregate Variables For Use Across Datasets In Multilevel Analysis, James Chowhan, Laura Duncan

Journal of Modern Applied Statistical Methods

This article examines the creation of contextual aggregate variables from one dataset for use with another dataset in multilevel analysis. The process of generating aggregate variables and methods of assessing the validity of the constructed aggregates are presented, together with the difficulties that this approach presents.

Go to article

Detecting Lag-One Autocorrelation In Interrupted Time Series Experiments With Small Datasets, Clare Riviello, S. Natasha Beretvas Nov 2009

Detecting Lag-One Autocorrelation In Interrupted Time Series Experiments With Small Datasets, Clare Riviello, S. Natasha Beretvas

Journal of Modern Applied Statistical Methods

The power and type I error rates of eight indices for lag-one autocorrelation detection were assessed for interrupted time series experiments (ITSEs) with small numbers of data points. Performance of Huitema and McKean’s (2000) zHM statistic was modified and compared with the zHM, five information criteria and the Durbin-Watson statistic.

Go to article

Relationship Between Internal Consistency And Goodness Of Fit Maximum Likelihood Factor Analysis With Varimax Rotation, Gibbs Y. Kanyongo, James B. Schreiber Nov 2009

Relationship Between Internal Consistency And Goodness Of Fit Maximum Likelihood Factor Analysis With Varimax Rotation, Gibbs Y. Kanyongo, James B. Schreiber

Journal of Modern Applied Statistical Methods

This study investigates how reliability (internal consistency) affects model-fitting in maximum likelihood exploratory factor analysis (EFA). This was accomplished through an examination of goodness of fit indices between the population and the sample matrices. Monte Carlo simulations were performed to create pseudo-populations with known parameters. Results indicated that the higher the internal consistency the worse the fit. It is postulated that the observations are similar to those from structural equation modeling where a good fit with low correlations can be observed and also the reverse with higher item correlations.

Go to article

Estimating Model Complexity Of Feed-Forward Neural Networks, Douglas Landsittel Nov 2009

Estimating Model Complexity Of Feed-Forward Neural Networks, Douglas Landsittel

Journal of Modern Applied Statistical Methods

In a previous simulation study, the complexity of neural networks for limited cases of binary and normally-distributed variables based the null distribution of the likelihood ratio statistic and the corresponding chi-square distribution was characterized. This study expands on those results and presents a more general formulation for calculating degrees of freedom.

Go to article

Level Robust Methods Based On The Least Squares Regression Estimator, Marie Ng, Rand R. Wilcox Nov 2009

Level Robust Methods Based On The Least Squares Regression Estimator, Marie Ng, Rand R. Wilcox

Journal of Modern Applied Statistical Methods

Heteroscedastic consistent covariance matrix (HCCM) estimators provide ways for testing hypotheses about regression coefficients under heteroscedasticity. Recent studies have found that methods combining the HCCM-based test statistic with the wild bootstrap consistently perform better than non-bootstrap HCCM-based methods (Davidson & Flachaire, 2008; Flachaire, 2005; Godfrey, 2006). This finding is more closely examined by considering a broader range of situations which were not included in any of the previous studies. In addition, the latest version of HCCM, HC5 (Cribari-Neto, et al., 2007), is evaluated.

Go to article

Least Error Sample Distribution Function, Vassili F. Pastushenko Nov 2009

Least Error Sample Distribution Function, Vassili F. Pastushenko

Journal of Modern Applied Statistical Methods

Email: The empirical distribution function (ecdf) is unbiased in the usual sense, but shows certain order bias. Pyke suggested discrete ecdf using expectations of order statistics. Piecewise constant optimal ecdf saves 200%/N of sample size N. Results are compared with linear interpolation for U(0, 1), which require up to sixfold shorter samples at the same accuracy.

Go to article

Confidence Interval Estimation For Intraclass Correlation Coefficient Under Unequal Family Sizes, Madhusudan Bhandary, Koji Fujiwara Nov 2009

Confidence Interval Estimation For Intraclass Correlation Coefficient Under Unequal Family Sizes, Madhusudan Bhandary, Koji Fujiwara

Journal of Modern Applied Statistical Methods

Confidence intervals (based on the χ2 -distribution and (Z) standard normal distribution) for the intraclass correlation coefficient under unequal family sizes based on a single multinormal sample have been proposed. It has been found that the confidence interval based on the χ2 -distribution consistently and reliably produces better results in terms of shorter average interval length than the confidence interval based on the standard normal distribution: especially for larger sample sizes for various intraclass correlation coefficient values. The coverage probability of the interval based on the χ2 -distribution is competitive with the coverage probability of the interval …

Go to article

On Some Discrete Distributions And Their Applications With Real Life Data, Shipra Banik, B. M. Golam Kibria Nov 2009

On Some Discrete Distributions And Their Applications With Real Life Data, Shipra Banik, B. M. Golam Kibria

Journal of Modern Applied Statistical Methods

This article reviews some useful discrete models and compares their performance in terms of the high frequency of zeroes, which is observed in many discrete data (e.g., motor crash, earthquake, strike data, etc.). A simulation study is conducted to determine how commonly used discrete models (such as the binomial, Poisson, negative binomial, zero-inflated and zero-truncated models) behave if excess zeroes are present in the data. Results indicate that the negative binomial model and the ZIP model are better able to capture the effect of excess zeroes. Some real-life environmental data are used to illustrate the performance of the proposed models.

Go to article

Closed Form Confidence Intervals For Small Sample Matched Proportions, James F. Reed Iii Nov 2009

Closed Form Confidence Intervals For Small Sample Matched Proportions, James F. Reed Iii

Journal of Modern Applied Statistical Methods

The behavior of the Wald-z, Wald-c, Quesenberry-Hurst, Wald-m and Agresti-Min methods was investigated for matched proportions confidence intervals. It was concluded that given the widespread use of the repeated-measure design, pretest-posttest design, matched-pairs design, and cross-over design, the textbook Wald-z method should be abandoned in favor of the Agresti-Min alternative.

Go to article

On Type-Ii Progressively Hybrid Censoring, Debasis Kundu, Avijit Joarder, Hare Krishna Nov 2009

On Type-Ii Progressively Hybrid Censoring, Debasis Kundu, Avijit Joarder, Hare Krishna

Journal of Modern Applied Statistical Methods

The progressive Type-II censoring scheme has become quite popular. A drawback of a progressive censoring scheme is that the length of the experiment can be very large if the items are highly reliable. Recently, Kundu and Joarder (2006) introduced the Type-II progressively hybrid censored scheme and analyzed the data assuming that the lifetimes of the items are exponentially distributed. This article presents the analysis of Type-II progressively hybrid censored data when the lifetime distributions of the items follow Weibull distributions. Maximum likelihood estimators and approximate maximum likelihood estimators are developed for estimating the unknown parameters. Asymptotic confidence intervals based on …

Go to article

Multiple Search Paths And The General-To-Specific Methodology, Paul Turner Nov 2009

Multiple Search Paths And The General-To-Specific Methodology, Paul Turner

Journal of Modern Applied Statistical Methods

Increased interest in computer automation of the general-to-specific methodology has resulted from research by Hoover and Perez (1999) and Krolzig and Hendry (2001). This article presents simulation results for a multiple search path algorithm that has better properties than those generated by a single search path. The most noticeable improvements occur when the data contain unit roots.

Go to article

Ordinal Regression Analysis: Fitting The Proportional Odds Model Using Stata, Sas And Spss, Xing Liu Nov 2009

Ordinal Regression Analysis: Fitting The Proportional Odds Model Using Stata, Sas And Spss, Xing Liu

Journal of Modern Applied Statistical Methods

Researchers have a variety of options when choosing statistical software packages that can perform ordinal logistic regression analyses. However, statistical software, such as Stata, SAS, and SPSS, may use different techniques to estimate the parameters. The purpose of this article is to (1) illustrate the use of Stata, SAS and SPSS to fit proportional odds models using educational data; and (2) compare the features and results for fitting the proportional odds model using Stata OLOGIT, SAS PROC LOGISTIC (ascending and descending), and SPSS PLUM. The assumption of the proportional odds was tested, and the results of the fitted models were …

Go to article

Estimation Of The Standardized Mean Difference For Repeated Measures Designs, Lindsey J. Wolff Smith, S. Natasha Beretvas Nov 2009

Estimation Of The Standardized Mean Difference For Repeated Measures Designs, Lindsey J. Wolff Smith, S. Natasha Beretvas

Journal of Modern Applied Statistical Methods

This simulation study modified the repeated measures mean difference effect size, d=RM , for scenarios with unequal pre- and post-test score variances. Relative parameter and SE bias were calculated for dRM ≠ versus dRM = . Results consistently favored d≠RM over d=RM with worse positive parameter and negative SE bias identified for d=RM for increasingly heterogeneous variance conditions.

Go to article

Estimating The Parameters Of Rayleigh Cumulative Exposure Model In Simple Step-Stress Testing. Natasha Beretvas Is An, Mohammed Al-Haj Ebrahem, Abedel-Qader Al-Masri Nov 2009

Estimating The Parameters Of Rayleigh Cumulative Exposure Model In Simple Step-Stress Testing. Natasha Beretvas Is An, Mohammed Al-Haj Ebrahem, Abedel-Qader Al-Masri

Journal of Modern Applied Statistical Methods

Assumes the life distribution of a test unit for any stress follows a Rayleigh distribution with scale parameterθ , and that Ln(θ ) is a linear function of the stress level. Maximum likelihood estimators of the parameters under a cumulative exposure model are obtained. The approximate variance estimates obtained from the asymptotic normal distribution of the maximum likelihood estimators are used to construct confidence intervals for the model parameters. A simulation study was conducted to study the performance of the estimators. Simulation results showed that in terms of bias, mean squared error, attainment of the nominal confidence level, symmetry …

Go to article

Test For The Equality Of The Number Of Signals, Madhusudan Bhandary, Debasis Kundu Nov 2009

Test For The Equality Of The Number Of Signals, Madhusudan Bhandary, Debasis Kundu

Journal of Modern Applied Statistical Methods

A likelihood ratio test for testing the equality of the ranks of two non-negative definite covariance matrices arising in the area of signal processing is derived. The asymptotic distribution of the test statistic follows a Chi-square distribution from the general theory of likelihood ratio test.

Go to article

Jmasm29: Dominance Analysis Of Independent Data (Fortran), Du Feng, Normal Cliff Nov 2009

Jmasm29: Dominance Analysis Of Independent Data (Fortran), Du Feng, Normal Cliff

Journal of Modern Applied Statistical Methods

A Fortran 77 program is provided for an ordinal dominance analysis of independent two-group comparisons. The program calculates the ordinal statistic, d, and statistical inferences about δ. The source codes and an executable file are available at http://www.depts.ttu.edu/hdfs/feng.php.

Go to article

Rhode Island Current Conditions Index — November 2009, Leonard Lardaro Nov 2009

Rhode Island Current Conditions Index — November 2009, Leonard Lardaro

The Rhode Island Current Conditions Index

No abstract provided.

Go to article

Torch (November 2009), Brandon Baldwin, Civil Rights Team Project Nov 2009

Torch (November 2009), Brandon Baldwin, Civil Rights Team Project

Torch: The Civil Rights Team Project Newsletter

No abstract provided.

Go to article

The Cultural Effects Of The Narcoeconomy In Rural Mexico, James H. Mcdonald Ph.D. Nov 2009

The Cultural Effects Of The Narcoeconomy In Rural Mexico, James H. Mcdonald Ph.D.

Journal of International and Global Studies

This essay describes the cultural effects of drug trafficking on a town in rural Mexico. A variety of ethnographic scenes reveal the rapidly changing social imagination as new forms of consumption create new opportunities for identity formation. However, because these new consumer forms are expensive, and therefore inaccessible to the majority of community members, a type of cultural exclusion is at work. In this ordinary town, there are extraordinary forms of consumption: large, lavish houses; high-stakes gambling at local cockfights; a new urban-oriented consumer culture; and new farmer entrepreneurs. All were underwritten by narco-activities. These new forms of consumption challenge …

Go to article

Planning For Internationalization By Investing In Faculty, Lisa K. Childress Ed.D. Nov 2009

Planning For Internationalization By Investing In Faculty, Lisa K. Childress Ed.D.

Journal of International and Global Studies

Over the last half century, major world events have prompted higher education institutions to develop internationalization plans. In order engage faculty in internationalization, higher education scholars and practitioners have recommended that internationalization plans include allocated resources, such as budgets for academic exchanges, faculty development workshops, and international curricular development and research grants (Olson, Green, & Hill, 2006; Paige, 2005; Siaya & Hayward, 2003). Yet, a frequently cited obstacle to faculty engagement in internationalization plans is lack of funding (Backman, 1984; Bond, 2003; Ellingboe, 1998; Green & Olson, 2003; Steers & Ungsen, 1992; Woolston, 1983). A cross-case analysis reveals that differential …

Go to article

Population, Rural Development, And Land Use Among Settler Households In An Agricultural Frontier In Guatemala’S Maya Biosphere Reserve, David Carr Ph.D. Nov 2009

Population, Rural Development, And Land Use Among Settler Households In An Agricultural Frontier In Guatemala’S Maya Biosphere Reserve, David Carr Ph.D.

Journal of International and Global Studies

Guatemala was among the world’s leaders in deforestation during the 1990s at a rate of 2% per annum. Much of Guatemala’s recent forest loss has occurred in the emerging agricultural frontiers of the Maya Biosphere Reserve (MBR), the heart of the largest contiguous tropical forest in Central America—La Selva Maya. This paper presents data from 241 heads of households and 219 partners of household heads from a geographically stratified sample of eight (of 28) communities in the Sierra de Lacandón National Park (SLNP), the most ecologically biodiverse region in La Selva Maya and a core conservation zone of the MBR. …

Go to article

Islam, Cultural Hybridity And Cosmopolitanism: New Muslim Intellectuals On Globalization, Carool Kersten Ph.D. Nov 2009

Islam, Cultural Hybridity And Cosmopolitanism: New Muslim Intellectuals On Globalization, Carool Kersten Ph.D.

Journal of International and Global Studies

This essay explores those Muslim discourses on the phenomenon of globalization which distinguish themselves by not succumbing to the antagonism guiding Huntington’s ‘clash of civilization’ thesis (1996) or Benjamin Barber’s account of ‘Jihad vs. McWorld’ (1995), either through the ‘blind imitation’(taqlid) characterising the unquestioned preservation of the classical Islamic heritage by traditionalist Muslims or through the atavistic return to the supposed pristine Islam of the ‘Pious Ancestors’ (salaf) of revivalist (fundamentalist) respondents. Combining an intimate familiarity with the heritage of Muslim civilization with a solid knowledge of recent achievements of the Western academe in the human sciences, the ‘new Muslim …

Go to article

Gordon Baker (Editor). No Island Is An Island: The Impact Of Globalization On The Commonwealth Caribbean London: Royal Institute Of International Affairs, 2007., Jerome Teelucksingh Ph.D. Nov 2009

Gordon Baker (Editor). No Island Is An Island: The Impact Of Globalization On The Commonwealth Caribbean London: Royal Institute Of International Affairs, 2007., Jerome Teelucksingh Ph.D.

Journal of International and Global Studies

No abstract provided.

Go to article

Grace M. Cho. Haunting The Korean Diaspora: Shame, Secrecy, And The Forgotten War. Minneapolis: University Of Minnesota Press, 2008., Keith Russell Ph.D. Nov 2009

Grace M. Cho. Haunting The Korean Diaspora: Shame, Secrecy, And The Forgotten War. Minneapolis: University Of Minnesota Press, 2008., Keith Russell Ph.D.

Journal of International and Global Studies

No abstract provided.

Go to article

Fareed Zakaria, The Post-American World. New York And London: W. W. Norton & Company, 2008., Joseph Chinyong Liow Ph.D. Nov 2009

Fareed Zakaria, The Post-American World. New York And London: W. W. Norton & Company, 2008., Joseph Chinyong Liow Ph.D.

Journal of International and Global Studies

No abstract provided.

Go to article

Tejaswini Niranjana. Mobilizing India: Women, Music And Migration Between India And Trinidad, North Carolina: Duke University Press, 2006., Jerome Teelucksingh Ph.D. Nov 2009

Tejaswini Niranjana. Mobilizing India: Women, Music And Migration Between India And Trinidad, North Carolina: Duke University Press, 2006., Jerome Teelucksingh Ph.D.

Journal of International and Global Studies

No abstract provided.

Go to article

Duncan Mccargo. Tearing Apart The Land: Islam And Legitimacy In Southern Thailand. Ny, Ithaca: Cornell University Press, 2008., Saroja Dorairajoo Nov 2009

Duncan Mccargo. Tearing Apart The Land: Islam And Legitimacy In Southern Thailand. Ny, Ithaca: Cornell University Press, 2008., Saroja Dorairajoo

Journal of International and Global Studies

No abstract provided.

Go to article

First Prev Next Last