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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Transborder Spillover Effects of Poverty on Crime：Applying Spatial Econometric Models to Chinese Data
贫困对犯罪的跨境溢出效应——将空间计量模型应用于中国数据
2023/4/13
贫困是罪恶之源，但现有文献尚未探讨当地贫困对域外犯罪的影响。基于1992-2012年中国省级面板数据，本文通过估算空间计量模型，考察贫困的异地犯罪效应。结果发现，贫困不仅会增加本地犯罪，而且会提升其它省份犯罪案件。后者的这种溢出效应在地理位置较近、劳动力流动性大、方言相似度高的省市之间更为明显。此外，本文还检验了助力减贫的低保政策和加强警力投入对降低贫困导致的本地和异地犯罪的影响，发现两者都可以降...
Dementia in Parkinson's Disease:Demographic Models and Estimates
Dementia Parkinson's Disease Demographic Models Estimates
2016/3/18
It is difficult to measure incidence and prevalence rates for rare conditions.For very rare conditions, the sample size requirements begin to approach the total population size. However, there is a ...
In spite of the fact that development is one of the most powerful and malleable contemporary discourses, its dissemination on a global level still needs a framework of analysis. Development entails a ...
Testing Intertemporal Substitution,Implicit Contracts,and Hours Restriction Models of the Labor Market Using Micro Data
Testing Intertemporal Substitution Implicit Contracts Hours Restriction Models Labor Market Micro Data
2015/9/18
We present new tests of three theories of the labor market: intertemporal substitution, hours restrictions, and implicit contracts. The intertemporal substitution test we implement is an exclusion tes...
THE EFFECT OF SAMPLE SELECTION AND INITIAL CONDITIONS IN DURATION MODELS:EVIDENCE FROM EXPERIMENTAL DATA ON TRAINING
Duration models job training sample selection
2015/9/18
We investigate the separate effects of a training program on the duration of participants' subsequent employment and unemployment spells. This program randomly assigned volunteers to treatment and con...
Alternative methods of estimating program effects in event history models
Duration models Duration of dependence
2015/9/18
This paper first investigates the sensitivity of estimates of duration models to the specification of duration dependence. Using data from an experiment involving disadvantaged women in the U.S., we f...
Seam Bias,Multiple-State,Multiple-Spell Duration Models and the Employment Dynamics of Disadvantaged Women
Seam Bias Multiple-State Multiple-Spell Duration Models Employment Dynamics of Disadvantaged Women
2015/9/18
Panel surveys generally suffer from “seam bias” - too few transitions observed within reference periods and too many reported between interviews. Seam bias is likely to affect duration models severely...
The Frontiers of Intellectual Property: Expanded Protection versus New Models of Open Science
knowledge production open source
2015/7/3
The growing salience of intellectual property (IP) rights has reconfigured U.S. science, shifting it from the formerly separate realms of
university and commercial science to an increasingly in...
Report on IUSSP Seminar on Space and Time in Historical Demographic Studies - New Methods and Models
Space and Time Historical Demographic Studies New Methods and Models
2015/6/26
Organized and funded by the IUSSP Scientific Committee on Historical Demography in collaboration with the Inter-university Consortium for Political and Social Research, University of Michigan, USA, an...
New initiative targets emerging models of technological innovation
New initiative targets models of technological innovation
2015/6/18
Technological innovation--as essential as ever for economic growth--now occurs in a rapidly changing global and local context.To identify the emerging models of technological innovation that will prop...
A matrix approach to the statistics of longevity in heterogeneous frailty models
frailty heterogeneity individual stochasticity longevity Markov chains mortality
2014/11/27
Background: The gamma-Gompertz model is a fixed frailty model in which baseline mortality increases exponentially with age, frailty has a proportional effect on mortality, and frailty at birth follows...
A matrix approach to the statistics of longevity in heterogeneous frailty models
statistics of longevity heterogeneous frailty models
2014/11/27
To develop a matrix model to compute all the statistical properties of longevity from the
gamma-Gompertz and related models.
Point process models for household distributions within small areal units
areal units household distribution point processes simulation spatial demography
2014/11/20
Spatio-demographic data sets are increasingly available worldwide, permitting ever more realistic modeling and analysis of social processes ranging from mobility to disease transmission. The informati...
Demography, foreclosure, and crime:: Assessing spatial heterogeneity in contemporary models of neighborhood crime rates
demographic context and crime foreclosure and crime geographically weighted regression
2014/11/20
Background: The present research evaluates the possibility of spatial heterogeneity in the effects on neighborhood crime rates of both traditional demographic indicators - immigrant concentration, rac...
Searching for Rehabilitation in Nonparametric Regression Models with Exogenous Treatment Assignment
bootstrap GAIN nonparametric rehabilitation stochastic dominance treatment effects
2012/10/22
This paper offers some new directions in the analysis of nonparamertric models with exogenous treatment assignment. The nonparametric approach opens the door to the examination of potentially differen...