Modeling and Prediction of Long-Distance Traffic Flows Through the Example of Road Transport in the Czech Republic

The construction of large-scale long-distance roads brings an irreversible impact on the landscape and therefore its careful and precise planning is very important. For this planning we use data on the intensity of traffic flows on existing roads and statistical tools for the modeling of planned traffic flows. The main objective of this paper is the modeling of the existing intensity of traffic flows on highways and expressways in the Czech Republic by determination of the optimal distance-decay function. On the basis of the resulting model and the resulting distance-decay function, it is possible to predict the intensity of traffic in the event of the completion and commissioning of new sections of highways and expressways. The subsequent analysis will allow us to make a qualified prediction of traffic intensity in the event of the completion of the R35 expressway, or after the completion of the R35 and R43 expressways. Besides the intensity on the above-mentioned roads themselves, the paper also predicts the expected reduction in traffic intensity on the busiest highway in the Czech Republic, that is, on the D1 highway between Prague and Brno.     

Population Distribution and Spatial Structure in Transitional Chinese Cities: A Study of Nanjing

Two geographers use population surface model techniques to analyze the distribution of population in Chinese cities. Focusing on Nanjing, they utilize detailed urban land use and building distribution data to develop a productive alternative method to reveal spatial variations in the distribution of inhabitants. The findings indicate that despite suburbanization, Nanjing remains a compact city with a population density that declines rapidly as distance from its central business district increases. Also, suburbanization has been limited to an inner area where population is densely distributed while commercial and office development is less prominent. Lastly, commercial activities influence the distribution of urban inhabitants and suburbanization more significantly than industrial development in suburbia. Journal of Economic Literature, Classification Numbers: O15, O18, R12, R14. 9 figures, 3 tables, 37 references.     

ANALYTICAL MODELS FOR BRICK MASONRY INFILLED R/C FRAMES UNDER LATERAL LOADING

Proposed in this paper are two analytical models for predicting the inelastic response of unreinforced brick masonry infills in reinforced concrete frames subjected to mono-tonic and reversed cyclic loading. The first model is based on the traditional diagonal strut concept, while the second one is a simple isoparametric element with shear deformation only. All the essential characteristics of the hysteretic behaviour of the panel, including strength and stiffness degradation, pinching and slippage, are explicitly taken into account. The models are implemented in a general-purpose program for the inelastic time-history analysis of structures, and are used for studying the seismic behaviour of typical multistorey frames with various arrangements of infill panels, including structures with an open ground storey. The results of the analysis are in agreement with both experimentally observed behaviour and with experience regarding seismically damaged buildings.     

BIOMETRIC CARDS FOR THE INDIAN POPULATION

Mathematical models could be helpful in assisting the Indian government's new initiative of issuing biometric cards to its citizens. This note examines the role of mathematical models in estimating the missing, non-enumerated population numbers, and in estimating the number of cards required by age, gender and regions annually in India. The link between the National Population Register and biometric cards is also highlighted. There are other scientific issues, such as electronic security, data storage management and identity verification, which we do not model in this paper, though we address the role they play in successful implementation.     

Sex,Socioeconomic and Regional Disparities in Age Trajectories of Childhood BMI,Underweight and Overweight in China

Using a longitudinal dataset from the China Health and Nutrition Survey (CHNS), growth-curve models were employed to examine age trajectories of body mass index (BMI) for 1694 subjects in China, who were aged 2–11 in 1993 and followed in four waves (1997, 2000, 2004 and 2006). Based on age- and sex-specific BMI cut-points recommended for international use, the prevalence rates of overweight and underweight in the transition from childhood to adulthood (age 6–18) were also predicted. Sex, family income, rural–urban residency and geographical location were found to be significantly associated with the onsets, slopes, and acceleration of age trajectories in BMI, overweight, and underweight (p < 0.01). Children who had lower prevalence of underweight in the transition from childhood to adulthood exhibited higher prevalence of overweight than their counterparts. Moreover, the age interval during which children were more vulnerable to an increase in underweight was different from that for overweight. There were substantial regional disparities in the age trajectories of childhood overweight and underweight. Whereas the analyses suggest that the dual burden of nutritional problems (the coexistence of overweight and underweight) in China, is more like two sides of a coin than two separate health issues; the critical age period for intervening in childhood overweight is different from that of childhood underweight. Geographical indicators of childhood obesity in China deserve further attention.     

国外古代失蜡铸造工艺研究综述

本文根据国外有关失蜡工艺研究的文献,着重介绍了西方有关古代失蜡铸造的遗物（蜡模和外范）的出土与发现,以及有关失蜡工艺的起源和西方早期失蜡铸造的方法。     

上海都市区制造业就业格局的演化及影响因素

制造业是城市经济的重要组成部分和推动城市空间格局演化的重要驱动力。本文采用上海1996年、2004年、2008年制造业企业分街道就业数据,分析上海都市区制造业的空间格局演化,采用计量模型探究了制造业就业分布的主要影响因素。研究表明,上海都市区制造业就业空间格局已经基本实现了郊区化,并涌现出了稳定的制造业次中心;区位、交通、地价和政策因素对制造业就业格局的形成有着显著作用,而且这些因素的作用存在着显著的行业间差异性。为实现制造业的合理布局和城市空间结构优化,政府应该尊重市场规律和不同产业的特点,为不同产业选址布局提供相应的空间供给和基础设施。     

基于生态敏感性评价的城市土地利用模式研究——以长春净月经济开发区为例

生态敏感性高的城市地域的土地利用是城市规划、建设、管理过程中比较"棘手"的问题之一,经常因为环境保护与建设发展的矛盾而使之处于两难的境地。本文在总结和思辨一般性城市土地利用模式的基础上,借助GIS技术对长春市净月经济开发区的土地利用现状进行生态敏感性评价。结果显示,因特定的水域和人工林环境导致净月区总体上生态敏感性较高,按照划分的极高、高、中、低、非敏感5种生态敏感区,其中度及以上生态敏感区占全区50%左右。作者进一步以生态敏感性分区为前提,总结提出其土地利用的空间结构模式、类型结构模式和管理模式,并指出其中后二者尚在不断完善过程中。     

A 3D digital workflow for archaeological intra-site research using GIS

Across a range of archaeological projects in Northern Greece, a context-based system, which has much in common with similar stratigraphic methods applied elsewhere in the world, is in use to record the excavation process. Here, we discuss a formal data model and complete digital workflow for the documentation of this process in 3D using the prehistoric site of Paliambela Kolindros, Greece, as a case study. The entire digital process has the advantage of being implemented on a single software platform. In addition, the combination of formal ontology and custom object-oriented programming enables a suite of techniques for exploratory data analysis and stratigraphic interpretation.     

越南境内汉墓出土院落明器研究

越南境内院落明器在东汉中期开始出现并延续至三国初年,院落的主体房屋由平地式演变为干栏式,院落的布局由前庭后屋式结构演变为房屋三面环绕中庭的结构。越南境内汉墓出土的院落明器在干栏式结构和城堡式设计方面既受到两广地区汉代典型建筑明器的影响又形成了自身的地域特点,此外以天井为中心的院落平面布局以及房屋独特的制作技法也体现了鲜明的本地特色,东汉晚期至三国初年具有越南境内地区特色的院落明器直接输出到两广地区,上述文化交流现象产生的原因与东汉时期两地密切联系的历史背景有关。