南宁市房地产价格分布规律的机助制图研究与开发方向的探讨

南宁市房地产业经历了由沉寂、复苏、火爆到稳步发展的过程．各公司开发的房屋类型相近,但价格差异却很大,价格分布呈现明显的规律性：一是城市中心价格高,边缘与郊区价格低;二是东部城区价格高,西部城区价格低．主导价格分布规律的三大影响因子是地理位置、交通便捷程度和生态环境质量．南宁今后的房地产开发和城市规划建设一要顺应价格分布规律,优地优用、保障房地产开发的高效益;二要加强交通设施建设和环境保护．促进全市房地产的升值;三要因势利导,发展城市副中心,逐步形成多中心的城市建设格局。     

《增校清朝进士题名碑录·附引得》进士籍贯刊误述论

文章以列表的方式,论述了《增校清朝进士题名碑录.附引得》中存在的6种进士籍贯刊误现象,即:省际进士籍贯刊载互误、省内进士县际籍贯互误、进士籍贯标注字误、以俗名标注进士籍贯、以府名标注进士籍贯及以府、县二级标注进士籍贯。文章并较细致地探讨了该书出现这些刊误的原因。     

The relationship between children's perceptions of the natural environment and their subjective well-being

The overarching aim of the study was to ascertain the relationship between children's perceptions of the natural environment and their subjective well-being. More specifically the study aimed to fit a structural model depicting the nature of the relationship between children's environmental views and their global, and domain-specific life satisfaction. The sample included 1004 twelve-year-old participants randomly selected from 15 primary schools in Cape Town, South Africa. The measuring instrument included the New Ecological Paradigm (NEP) Scale for children, the Students' Life Satisfaction Scale and the Personal Well-Being Index-School Children. Confirmatory factor analysis was used to test the validity of the NEP Scale which showed appropriate fit structure. A good fit structure was also found for the overall structural equation model. However, the overall model showed that children's environmental views were not related to their global life and domain-specific life satisfaction. At a foundational level, more research is required to allow for a better understanding of how children in differing circumstances construct and assign meaning to nature, and what their perceptions of nature are before we can begin to ask them when, how or why they engage in nature.     

Colonowhen, Colonowho, Colonowhere, Colonowhy: Exploring the Meaning behind the Use of Colonoware Ceramics in Nineteenth-Century Manassas, Virginia

This paper explores the meaning and use of colonoware ceramics recovered from six archaeological sites dating from the nineteenth-century at Manassas, Virginia. Americans, both free and enslaved, occupied this landscape. Archaeological investigations have recovered colonoware at some nineteenth-century domestic sites but not others. The occurrence of colonoware at these sites is patterned: colonoware in nineteenth-century Manassas was not an “ethnic” marker denoting peoples of African descent, but rather a social marker that distinguished enslaved people from free. People of free and enslaved status attributed negative connotations to colonoware. Enslaved servants employed colonoware out of economic necessity, not as a way to express ethnicity.     

Pressurised pastoralism in South Gobi, Mongolia: what is the role of drought?

The desert-steppe region of southern Mongolia is susceptible to drought and extreme winter weather ( dzud ) that in combination form Mongolia's worst natural hazard. Low precipitation and high climatic variability in this dryland environment impact the landscape and affect pastoralism, the dominant rural lifestyle. Using the Standardised Precipitation Index (SPI), this paper identifies drought occurrence in South Gobi Province, Mongolia. It then examines the relationship of drought with climate factors, interaction with vegetation (derived from Normalised Difference Vegetation Index - NDVI - data), and local human and livestock populations, and the dzuds of 1999–2001. Results show that drought is recurrent in the region, reaching extreme intensity most recently in 2005–2006. In contrast with the prevailing concept of drought impacting dzuds , the study did not find a connection between drought and dzud in South Gobi Province. Though repeated events, these natural hazards occur independently in the region. Climatic variables show increasing temperatures (>1°C), fluctuating precipitation patterns and a decline in vegetation cover. The principal long-term correlation of drought is with human population rather than natural factors, dzud or livestock numbers.     

Cumulative Ductility Spectra for Seismic Design of Ductile Structures Subjected to Long Duration Motions: Concept and Theoretical Background

A seismic design procedure that does not take into account the maximum and cumulative plastic deformation demands that a structure will likely undergo during severe ground motion could lead to unreliable performance. Damage models that quantify the severity of repeated plastic cycling through plastic energy are simple tools that can be used for practical seismic design. The concept of constant cumulative ductility strength spectra, developed from one such model, is a useful tool for performance-based seismic design. Particularly, constant cumulative ductility strength spectra can be used to identify cases in which low-cycle fatigue may become a design issue, and provides quantitative means to estimate the design lateral strength that should be provided to a structure to adequately control its cumulative plastic deformation demands during seismic response. Design expressions can be offered to estimate the strength reduction factors associated to the practical use of constant cumulative ductility strength spectra.     

A Damage Index for the Seismic Analysis of Reinforced Concrete Members

This article proposes a damage index for the seismic analysis of Reinforced Concrete members using the hysteretic energy dissipated by a structural member and a drift ratio related to failure in the structure. The index was calibrated against observed damage in laboratory tests of 76 RC column units under various protocols. Values obtained in this calibration had acceptable agreement with the levels of damage observed in the test specimens. An analysis of the parameters involved in the definition of the proposed damage index shows the importance of displacement history in the drift ratio capacity of structures.     

Towards Damage-Based Design Approach for RC Bridge Columns Under Combined Loadings Using Damage Index Models

This article investigates a damage-based design approach for circular reinforced concrete (RC) columns under combined bending, shear, and torsion using decoupled damage index models. The combination of bending moment, shear, axial, and torsional loading affects the structural performance of bridge columns with respect to strength, deformation capacity and progression of damage. The damage index model proposed here permits decoupling these combined actions according to various damage limit states. This work evaluates the interaction between bending and torsional damage indices in terms of progression of damage. It also investigates the effects of the transverse reinforcement ratios and shear span. Based on experimental and analytical results increase of torsion amplified the progression of damage. The increase in transverse reinforcement ratio was found to have delayed the progression of damage and to have changed the torsional dominated behavior to flexural dominated behavior under combined bending and torsion.     

Increasing Seismic Energy Dissipation of Steel Moment Frames Using Reduced Web Section (RWS) Connection

Connections of steel moment frames are vulnerable to brittle failure. Providing a perforation near the beam-ends is suggested as a potential method to improve seismic behavior of these structures. This article presents a numerical study on the energy dissipation of steel moment connections with perforated beam. Models with elongated circular openings of different dimensions and location are analyzed and compared based on the global and local damage indices, predicted failure time and dissipated energy. Results show that an RWS connection with a proper opening size can develop reasonable inelastic deformations and provide an acceptable seismic improvement to moment-resisting frames.     

城市入境旅游景气指数构建研究——以北京为例

本文基于城市视角编制了旅游景气指数,并从理论上建立了包括先行指数、一致指数、滞后指数的旅游景气指数体系。本文以北京为例,运用月度数据编制了2007年-2012年入境旅游景气先行指数和一致指数,分析了在此期间北京入境旅游市场的波动情况及成因,揭示了先行指数和一致指数之间存在的时滞关系,以期为政府管理机构和旅游企业准确判断城市旅游业的发展并预测未来的动向、制定相关政策提供一定的依据。