The Dual Model for Tourism Resource Productivity Improvement

Abstract

For natural resource science, resource productivity studying is an important subject. But researches on tourism resource productivity are limited. The most significant influencing factor on tourism resource productivity is the potential market scale of tourist locations, and second most important influencing factor is the resource endowment. Regional urban population is significantly correlated with region tourist numbers, being the decisive factor of region potential tour market scale. In tourism development, the dual model should be adopted: on one hand to enhance tour spot attractiveness, on the other hand to cultivate the potential market by improving urbanization level and other means. In the situation of tourism development fever spreading, the dual model for improving tourism productivity helps to avoid the “Great Leap Forward” which means that too rapid tourism construction divorces from actual market demand.     

绿洲规模扩张的资源环境与生态阈限

本文系统分析了绿洲规模扩张的资源、环境与生态阈限。干旱区绿洲规模的扩张在总体上要受到资源、环境与生态阈限的制约。在绿洲经济发展过程中 ,无视这些阈限的制约 ,就会出现绿洲规模扩张的无度化 ,并产生一系列环境、生态问题 ,导致绿洲人地关系的极度失调。因此 ,要摒弃绿洲可无限扩张的认识。绿洲规模调控或绿洲适度规模的研究 ,应以这些阈限为理论基础 ,绿洲可持续发展在客观上也需要对这些阈限的深刻揭示。     

江苏油田西部新区试采初期清洁生产工艺研究

在江苏油田西部新区,大部分油井均地处沙漠边缘或腹地,属于脆弱的沙漠生态环境。对新区试采初期不同施工环节中污染源、污染物进行了分析,针对各种污染物产生的环节,提出了试采初期实施清洁生产的管理和技术方法,并对探区的清洁生产长期规划提出了可行性建议。     

Dynamics of species and species complexes as a field of research in historical ecology

Specific features of research on the dynamics of species and species complexes are considered on the basis of data on Late Cenozoic subfossil and fossil bone remains. Special attention is given to the objects to be reconstructed, the principles of their classification, and the concept concerning three scales of these dynamics: the actual, historical, and evolutionary scales. Published in Russian in Ekologiya, 2006, No. 6, pp. 452–456. The text was submitted by the author in English.     

Statistical control in correlational studies: 10 essential recommendations for organizational researchers

Statistical control is widely used in correlational studies with the intent of providing more accurate estimates of relationships among variables, more conservative tests of hypotheses, or ruling out alternative explanations for empirical findings. However, the use of control variables can produce uninterpretable parameter estimates, erroneous inferences, irreplicable results, and other barriers to scientific progress. As a result, methodologists have provided a great deal of advice regarding the use of statistical control, to the point that researchers might have difficulties sifting through and prioritizing the available suggestions. We integrate and condense this literature into a set of 10 essential recommendations that are generally applicable and which, if followed, would substantially enhance the quality of published organizational research. We provide explanations, qualifications, and examples following each recommendation. Copyright © 2015 John Wiley & Sons, Ltd.     

地铁十字换乘车站全尺寸实验研究:Ⅱ.站台火灾

为了解在不同通风模式下地铁十字换乘车站站台火灾发展规律,通过在地铁十字换乘车站站台开展全尺寸火灾实验,分析了不同通风模式下站台层火灾的烟气扩散速率、沉降高度和扩散范围。研究结果表明:该类型车站站台火灾烟气扩散受到建筑结构和通风条件等因素的影响;在A线路站台层发生火灾时,站台断面面积沿烟气扩散方向的缩小有效抑制了烟气向远端扩散;站台机械通风能够有效降低烟气扩散速率,控制烟气扩散区域和沉降高度;在0.5 MW火灾规模下,A线路站台火灾对B线路影响不明显。     

SWAT‐LUT: A Desktop Graphical User Interface for Updating Land Use in SWAT

Long‐term simulations of agricultural watersheds have often been done assuming constant land use over time, but this is not a realistic assumption for many agricultural regions. This paper presents the soil and water assessment tool (SWAT)‐Landuse Update Tool (LUT), a standalone, user‐friendly desktop‐based tool for updating land use in the SWAT model that allows users to process multi‐year land use data. SWAT‐LUT is compatible with several SWAT model interfaces, provides users with several options to easily prepare and incorporate land use changes (LUCs) over a simulation period, and allows users to incorporate past or emerging land use categories. Incorporation of LUCs is expected to provide realistic model parameterization and scenario simulations. SWAT‐LUT is a public domain interface written in Python programming language. Two applications at the Fort Cobb Reservoir Experimental Watershed located in Oklahoma and pertinent results are provided to demonstrate its use. Incorporating LUCs related to implementation of recommended conservation practices over the years reduced discharge, evapotranspiration, sediment, total nitrogen, and total phosphorus loads by 59%, 9%, 68%, 53%, and 88%, respectively. The user’s manual is included in this article as Supporting Information. The SWAT‐LUT executable file and an example SWAT project with three land use rasters and the user’s manual are available at the United States Department of Agriculture‐Agricultural Research Service Grazinglands Research Laboratory website under Software. Editor’s note : This paper is part of the featured series on Optimizing Ogallala Aquifer Water Use to Sustain Food Systems. See the February 2019 issue for the introduction and background to the series.     

企业生态创新的维度构成与量表开发研究

生态创新是促进经济绿色增长、应对气候变化的重要手段与核心工具,但目前关于生态创新的测量量表相对缺乏。通过对国内外生态创新的文献的系统梳理,结合开放式问卷调查和内容分析,本研究初步构建了由16项条款构成的初始测量量表。运用探索性和验证性因子分析,确定了由11项条款构成的生态创新测量量表,包含生态管理创新、生态工艺创新和生态产品创新三维度。本研究识别了生态创新的内部构成与确定了其测量量表,为深入研究生态创新的前置因素、生态创新与企业绩效之间的关系奠定了良好的基础,同时也为评价与比较不同企业的生态创新水平提供了支撑。     

Enhanced photocatalytic activity of fish scale loaded TiO2 composites under solar light irradiation

Fish scale (FS) loaded TiO₂ composites were investigated as photocatalysts in degradation of Methyl Orange under solar light irradiation. Composites were prepared through sol-gel method by varying mass ratio of TiO₂/FS at 90:10, 70:30 and 50:50, respectively. The catalysts prepared in this study were characterized by using XRD, SEM, FT-IR and nitrogen sorption. The effects of solar irradiation, mass ratio of TiO₂/FS composites, irradiation time and catalyst loadings were studied. Synergistic effect was found in TiO₂/FS of 90:10 composite which performed higher photocatalytic degradation than synthesized TiO₂ under solar light irradiation. However, further increasing fish scale content in the composites reduced the photocatalytic activity drastically. Under solar light irradiation, all the catalysts in this study exhibited photocatalytic activity, except TiO₂/FS of 50:50 composite that only acted as a weak biosorbent without performing any photocatalytic property. Photocatalytic degradation increased with increasing catalyst loading and irradiation time but decreased with increased of initial dye concentration.