2015年我国春运人口省际流动的时空格局

文章基于百度迁徙数据构建人口流动的关系矩阵,完整刻画出2015年春运期间全国人口在东部与中西部城市间省际循环流动的空间集聚与扩散过程.主研究结论:(1)2015年2月13日(腊月廿五)至17日(腊月廿九)和2月25日(正月初七)至3月1日(正月十一)是春节前返乡流和节后返工流两阶段人口净流入(流出)的峰值时段,两阶段各市日人口净流入人次存在正负对应的规律性特征;(2)人口省际流动的近域特征、空间依赖关系并存,京津冀、长三角、珠三角城市群主导了高强度人口流动,并形成3个扇形辐射区域;(3)识别出全国94个人口流入城市和242个流出城市.在空间上,人口集聚的沿海绵延带与人口流失的中部塌陷带共同构成流入、流出城市的双纵平行格局.     

Variability of Travel Time,Congestion, and the Cost of Travel

The variability of travel time modifies the rush hour traffic and the cost of commuting. The bottleneck model of road congestion with fixed peak-load demand is augmented of an additive random delay. When individuals have (α-β-γ) preferences, there exists a unique Nash equilibrium. The variability of travel time leads to departure rates that are spread more evenly over the rush hour than when travel times are deterministic. This equilibrium mechanism mitigates both congestion and the cost of unreliability. This implies that “single-traveler models,” which treat congestion as an exogenous phenomenon, overestimate the value of reliability for the rush hour. The application with the uniform or with the exponential distribution helps appraise the overestimation.     

Notes on abortion and birth control in Germany

In this paper the author discusses the legislation regarding abortion and contraception which applies in the western zones of Germany to-day. He states that a number of regulations made under the National Socialist regime are still enforced and discusses the consequences of this state of affairs.     

Biographical Notes

S hi Xiaobo, male, was born in Bole City of Xinjiang Uygur Autonomous Region in December 1976. He graduated from the Department of Fine Arts in Shihezi University in Xinjiang. He studied in the material art class of Oil Painting Department in ） China Central Academy of Fine Arts from September 2011 to July 2012. He studied in the Lei Bo Studio in Beijing Fine ArtAcademy from August 2012 to present. He is currently working as a full-time painter in Xinjiang Bozhou Fine Art Academy, member of Xinjiang Artists Association, and council member of Xinjiang Oil Painting Society.     

Travel Demand Management and Social Exclusion

Demand management policy and practice has been focused on the need to reduce car‐based trips and the level of congestion. Mode‐shift goals of transport policy now require a greater balance between congestion reduction objectives and the equally important policy objectives of social inclusion and safety. This paper examines transport disadvantage and social exclusion in urban Scotland. The work provides an overview of the trends and transport patterns in deprived areas. It examines the impact of income and gender on journey time and lifestyle and demonstrates the differential effects of transport access on the ability to access goods and services. The paper also looks at policies that are being developed to tackle the effects of transport disadvantage.     

Risk Aversion in Travel Mode Choice with Rank-Dependent Utility

Using 2004 stated preference data on travel mode collected in the Zürich area, different parametric specifications of the rank-dependent utility function in a logit mixture model show that commuters are weakly averse to small-time losses. The results also justify Yaari's dual theory of choice under risk, that the utility function is linear on outcomes but that the perception of corresponding probabilities is biased. For leisure travel, the travelers are risk neutral to small losses of time.     

Spring Festival in China,2008:Struggle against Ice and Snow

Just before the spring festival of 2008,the eastern,middle,southern and southwest parts of China were hit by violent icy and snowy weather,which was the most serious winter storm disaster in recorded history·The daily lives of the people in the disaster areas were severely     

NPFPC: Report on the Investigation of Floating Population Returning Home in Advance before 2009 Spring Festival

In order to analyze the impact of the international financial crisis on the floating population, from November to December in 2008, the Department of Floating Population Service and     

Transnational Mobilties in Snowboarding Culture: Travel,Tourism and Lifestyle Migration

Abstract

Drawing upon global ethnographic methods conducted in six countries over seven years, this paper offers the first in-depth examination of the transnational flows and corporeal mobilities in the contemporary physical culture of snowboarding. Focusing on the travel and migration experiences of various groups of snowboarders (that is, tourists, professional athletes and lifestyle sport migrants), and engaging recent work by human geographers, as well as Pierre Bourdieu’s key concepts of field, capital and habitus, this paper reveals fresh insights into the lived transnationalism and global migration of contemporary youth facilitated by the ‘action’, ‘alternative’ or ‘extreme’ sports economy.     

春运问题的人口社会学分析

春运是近十多年来在中国形成的一大独特的社会现象,因在短期内集中引发诸多问题而成为人们日益关注的社会问题。春运既是当代中国社会结构变迁的产物,又蕴涵着丰富的传统文化意味,春运问题实质上是现代与传统冲突的结果。社会结构空间上的人口流动、社会发展的不均衡以及制度性约束是春运问题产生的根源,因而要从根本上解决春运问题,必须加快城乡、区域的均衡发展,同步推进城市化与农村建设,促进社会结构的日趋合理与稳定。     

Biographical Notes of Huang Ming

Huang Ming, male, Han nationality, was born in Huangshi City, Hubei Province in 1963. He graduated from Department of Oil Paintings of China Academy of Arts in 1989. Currently, he is professor and master instructor of Institute of Fine Arts in Hangzhou Normal University.1990 Participated in the Second National Sports Art     

Biographical Notes of Deng LeMin

Deng Lemin was born in Chongzuo City of Guangxi province in August,1965.He graduated from and obtained a bachelor degree in Guangxi Arts Institute in 1993.He is currently a professional painter,member of China Artists Association,and council member of Guangxi Artist Association.