Results 71 to 80 of about 4,654,667 (290)
Incorporating Zero-Inflated Poisson (ZIP) Regression Model in Crash Frequency Analysis
, 2023 : This paper addresses the Zero-inflated Poisson (ZIP) regression model as an effective way to handle the excess zeros that usually exist in vehicle crash data and to allow for possible overdispersion in the data.
Azad Abdulhafedh
core +1 more source
Carbon Markets and Green Innovation: Path‐Dependent Firm Responses to Emissions Trading
Business Strategy and the Environment, EarlyView.ABSTRACT This paper identifies a dynamic boundary condition of the Porter hypothesis by examining how firms' pre‐existing innovation trajectories shape regulatory‐induced green innovation within the context of a market‐based carbon policy. Building on path dependency theory, we argue that firms' responses to environmental regulation are contingent on ...
Rushi Chen, Effie Kesidou, Peter Howley
wiley +1 more source
BMC Research Notes, 2019 Objective Fertility is a count data usually rightly skewed and exhibiting large number of zeros than the distributional assumption of the generalized linear models (GLMs).
Yusuf Olushola Kareem +4 more
doaj +1 more source
Business Group Affiliation and Environmental Innovation: The Moderating Role of Board Diversity
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines the relationship between business group (BG) affiliation and corporate environmental innovation, with a particular focus on the moderating role of board diversity. Drawing on resource dependence theory (RDT) and agency theory, we argue that although BGs provide affiliated firms with strategic resources, their governance ...
Yamin Xie +3 more
wiley +1 more source
Board Gender Diversity and Environmental Activity in Family Firms: The Role of Female Directors
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines how female board representation relates to environmental activities in family firms, distinguishing family from nonfamily female directors and considering the curvilinear shape of the relationship and the role of industry. Drawing on upper echelons theory and socioemotional wealth, we argue that women's influence depends on
Iván Alfredo Salazar Morales +2 more
wiley +1 more source
Weather based forewarning model for cotton pests using zero-inflated and hurdle regression models
Journal of AgrometeorologyEarly forewarning of crop pest based on weather variables provides lead time to manage impending pest attacks that minimize crop loss, decrease the cost of pesticides and enhance the crop yield.
N. NARANAMMAL, S.R. KRISHNA PRIYA
doaj +1 more source
Finding the Right Distribution for Highly Skewed Zero-inflated Clinical Data
Epidemiology, Biostatistics and Public Health, 2013 Discrete, highly skewed distributions with excess numbers of zeros often result in biased estimates and misleading inferences if the zeros are not properly addressed.
Resmi Gupta +3 more
doaj +1 more source
Modeling the distribution of new MRI cortical lesions in multiple sclerosis longitudinal studies. [PDF]
PLoS ONE, 2011 ObjectiveRecent studies have shown the relevance of the cerebral grey matter involvement in multiple sclerosis (MS). The number of new cortical lesions (CLs), detected by specific MRI sequences, has the potential to become a new research outcome in ...
Maria Pia Sormani +5 more
doaj +1 more source
Indonesian Journal of Statistics and Its Applications, 2019 Health is a very important thing for humanity. One way to look at a person's health condition is through the number of unhealthy days which can also shows the productivity of the community in a region. Modeling the number of unhealthy days which are examples of count data can be done using Poisson regression.
Kusni Rohani Rumahorbo +2 more
openaire +2 more sources
Copula‐based joint modelling of emergency department visits with time‐varying dependence
Canadian Journal of Statistics, EarlyView.Abstract Jointly modelling multiple correlated count time series is essential in health services research, where outcomes like emergency visits for mental health and substance use often evolve together. Ignoring these dependencies can obscure meaningful trends and limit the effectiveness of policy evaluation.
Guanjie Lyu, Cindy Feng, Lihui Liu
wiley +1 more source