在线医疗平台信息生态系统的生态性评价指标体系研究

[目的/意义]在线医疗平台作为一类典型的信息生态系统,其可持续发展依赖于生态性水平。构建生态性评价指标体系,不仅是对在线医疗平台评价指标体系的必要补充,还有助于拓展生态性评价的研究场景。[方法/过程]基于信息生态理论,利用德尔菲法和层次分析法,以DPSIR模型为基础,构建了由“驱动力—压力—状态—影响—响应”5个维度构成的在线医疗平台信息生态系统的生态性评价指标体系。[结果/结论]在线医疗平台应着力于内在动力的激发;信息生态位重叠问题是平台压力的主要来源;提升社会和同行对在线医疗平台的评价是改善平台状态的重要抓手;增强资源吸引力和资源巩固力是提高平台影响力的关键;系统创新能力是强化平台响应能力的重要因素。

基于生态之城目标的上海空间资源生态性评价方法与规划策略

上海城市空间具有高密度建成区特征,是市民生活和工作的重要空间载体,除增加绿色休闲空间外,更重要的是提供满足居民生态休闲需求的高品质生态产品。一方面,针对生态空间和建设用地空间分布较为分散的区域,加大用地结构调整力度,通过优化城市空间组织模式,提升空间的生态性。另一方面,针对建成区建设用地占比较高的特征,通过城市更新等手段织密城区绿网,提高绿色空间的建设品质。

高职思政教育生态系统的生态性评价要素指标研究

基于高职思政教育生态系统可持续发展的内涵要义,以DPSIR理论为基础,解析了高职思政教育生态系统的生态性评价要素指标。研究发现高职思政教育应着力推进内生动力与外源动力耦合联动的正向效应;资源整合乏力、环境改善欠佳、功能发挥受限等生态失衡问题是其压力的主要来源;提升拓展生态位宽度、改善生态位效度、实现生态共生互利是改善其状态的重要抓手;增强师资力量集聚力、提升文化生态承载力、改善资源有效整合力是提升其影响力的关键;结构体系调整优化、投入活力充分提升、产出价值有效发挥的联动效应是强化其响应能力的重要因素。

移动支付信息生态系统生态性评价及实证研究

【目的/意义】对移动支付信息生态系统进行评价,可以为政府各部门提升我国互联网金融移动支付信息生态系统建设提供决策参考。【方法/过程】本文基于互联网金融移动支付业务流程构建了移动支付信息生态系统模型,分析了系统的构成要素和价值实现过程,从信息、信息人、信息环境和信息技术四个维度,设计了包含信息安全、服务体验、用户信用、支付风险、系统性能和运行效能六个层面的移动支付信息生态系统评价指标体系,运用层次分析法与模糊综合评判法,对互联网金融移动支付信息生态系统的生态性进行了实证分析和综合评价。【结果/结论】研究发现当前我国移动支付信息生态系统发展整体相对良好,但信息安全和支付风险问题仍存在,移动支付用户的信用水平亟待提升。【创新/局限】本文首次构建出移动支付信息生态系统模型,并从信息生态视角对该系统的整体生态性水平进行了全面多维度的分析与评价,后续可对理论模型和指标体系进一步丰富和完善。

大数据驱动的社交网络舆情生态性评价及实证研究

[目的/意义]在大数据时代,基于客观数据构建行之有效的社交网络舆情生态评价方法对网络生态治理和健康发展具有重要的意义。[方法/过程]本文以信息生态理论为基础,采用机器学习、敏感判断、关键词抽取等自然语言处理技术构建了社交网络舆情生态性评价算法。在数据处理过程中,采用基于Adaboost的集成学习方法,利用差异方法、特征集合构造分类器之间的互补效应,通过有效聚合多个基于统计和基于规则的情绪分析器,构建出情感分析模型,为评价指标体系提供支撑。实践层面,本文选出东北、沿海以及西部几个代表性区域运用所构建的评价算法对区域生态性进行评价和分析。[结果/结论]该评价方法的构建为政府、网站、网民携手净化社交网络空间具有重要的指导意义,并为社交网络舆情主题图谱的构建及调控策略的研究提供了重要的理论和实践基础。

生态旅游的生态性及其影响因素研究

探究实践中生态旅游发展的真实状况并分析其影响因素,对于完善生态旅游管理和推进生态文明建设具有重要意义.然而,目前衡量生态旅游核心目标实现程度的研究却相对较少,不利于评判现实中生态旅游是否真正生态.该文尝试提出生态旅游的生态性概念,构建生态性评价指标体系,在对生态性的可能影响因素进行理论分析并提出假说的基础上,选取47个国家生态旅游示范区为案例地进行实证研究.结果表明:1)生态旅游的生态性评价可以从环境保护、文化保护、环境教育、社区福利、自然基础、道德要求6个维度展开.2)案例生态旅游区的生态性整体处于一般水平,环境保护、文化保护和自然基础表现相对较好,其余方面需加强.3)生态旅游区类型对生态性有显著影响,表现为湿地型旅游区的生态性显著高于森林型,不同类型旅游区在各维度上的表现也有差异;同时,生态旅游区的生态性与其员工的生态旅游认知水平正相关,即员工的认知水平越高,生态旅游区生态性指数以及在自然基础、环境保护、环境教育、文化保护四个维度的得分越高,生态性越好;而地区发展水平对生态旅游的生态性没有显著影响.研究结果能够为实现生态旅游的可持续、高质量发展提供重要参考.

发光细菌法评价坯革生态安全性的毒性参照物替代及应用

针对发光细菌法常用的毒性测试参照物氯化汞,选取毒性较小的锌盐作为参比物质替代,研究了SO_(4)^(-)和Cl^(-)对锌的形态分布、稳定性以及毒性的影响。结果表明,在水溶液中,无机阴离子对锌的形态分布影响较小;在毒性测试的3%NaCl介质中,虽然硫酸锌形态成分较氯化锌多,但在pH 1~8范围内组成恒定,主要为65%的Zn^(2+)和25%的[ZnCl]^(+)。硫酸锌存放稳定性更好,而氯化锌易吸湿;硫酸锌对发光细菌的EC_(50)值为1.23 mg/L,大于氯化锌的EC_(50)值0.92 mg/L,毒性更低。最后,以硫酸锌为参比物,评价了常见鞣剂鞣制坯革的生态安全性,根据现有法令关于危废的综合毒性指标,发现所有皮坯都可归属为普通废弃物,但铬比有机鞣剂更影响鞣制皮坯的生态安全性。

水培–CO_(2)释放测定法评价皮革的生物降解性

生物降解性是评价皮革生态性的重要指标。以多种鞣制皮革为测试对象,采用ISO20136标准——水培–CO_(2)释放测定法评价其生物降解性,并优化了降解实验条件。结果表明,参比材料可使用去酸皮替代I型胶原。当样品–污泥质量比为1∶3,样品质量浓度为0.2~0.6g/L,降解温度为30℃时,降解20d即可判断不同皮革的生物降解性差异。研究所用无铬鞣革的生物降解性均优于铬鞣革。该生物降解性测定方法的广泛应用可望为皮革行业的绿色可持续发展提供支撑。

探讨如何进行生态河道治理

河道作为水生态环境的重要载体,针对它的治理不但要满足最基本的泄洪排涝需求,也要保证它的河道自然特征,即为水生生物提供优良的生存空间,实现地方社会、人文、经济、自然生态效应等多方面有利建设,也满足人类活动基本需求。本文以上海某地区生态河道整治规划项目为例,详细探讨了该项目河道的生态治理模式,并对其治理后效果进行了评价。

Evaluation on Wheat Adaptability in Hetao Area,Inner Mongolia

Wheat samples were collected from Hetao Area, Inner Mongolia, and their poisonous, harmful and beneficial elements contents were analyzed. According to the standards for heavy metals in wheat green food, the Hg, Cd, As and Pb contents in the wheat samples collected from Qiantao Area were all below the national standards, indicating that they were green; and the heavy metals contents in the wheat samples collected from Houtao Area were basically in line with the pollutionfree food hygiene standards, indicating that they were not harmful to human body. Harmful elements Cd and Hg were more enriched in the wheat samples from Qiantao Area, but their contents were all lower than the national food standards, indicating that the wheat from Qiantao Area was not harmful to human health. The wheat from Houtao Area was rich in essential trace elements Cu, Zn, Se and K, and long-term consumption was beneficial to human health.

Ecosystem health: ecological sustainability target of strategic environment assessment

Strategic environment assessment (SEA) and ecosystem health are two new ideas on environmental management. On the basis of reviewing some relevant literature, this paper made discussions on the ecological sustainability target of SEA, the content of ecosystem health as well as the interrelations between SEA and ecosystem health. For a good SEA, its ecological sustainability principles should be provided with distinct content and a general assessment system. A framework for ecosystem health assessment was established according to the content of ecosystem health, and combined into SEA as SEA抯 ecological sustainability target, we can effectively guide decision-makers to make suitable indigenous means and local solutions. , The basic principles and procedure of SEA for ecosystem health are also discussed in the paper.

生态学视角下大学英语教学环境评价与优化对策研究

大学英语教学环境一直深受上至国家、下至社会各界的高度关注。生态学视角下的大学英语教学是作为一个有机系统的生态整体而存在的。大学英语教学环境的生态性评价是理论与模型的结合,通过生态性评价模型的指标构建,从大学英语教学微观影响因子角度出发,该文进一步提出生态性优化措施,以期待对整个大学英语教学环境提供有利条件。

The status evaluation of the permafrost environment along the Chaida'er-Muli Railway in southern Qilian Mountains in northern Qinghai Province,China

Engineering construction has major influence on the permafrost environment.This paper analyzes the interaction between engineering construction and permafrost environment along the Chaidaer-Muli Railway(simply,CMR) based on the press-state-response(PSR) framework.The permafrost environmental system is divided into three subsystems,consisting of permafrost thermal stability,proneness to the freeze-thawing erosion and permafrost ecological fragility.Each subsystem considers its most important influencing factors.Catastrophe Progression Method(CPM) is applied to calculate the current environment condition along the railway.The result indicates that:(1) as far as the thermal stability is concerned,most sections along the CMR are mainly concentrated in rank Ⅲ(fair situation),and a few in Ⅱ(good situation) and Ⅳ(bad situation),respectively;(2) for the proneness tothe freeze-thawing erosion,the entire railway route falls largely in rank Ⅱ(good situation);(3) along the CMR,the ecological fragility of the permafrost environment is in rank Ⅱ(good situation),or slightly fragile;(4) overall,the permafrost environments along the CMR are in rank Ⅲ(fair situation) or Ⅱcondition(good situation).In general,the permafrost environment along the CMR is fair.It is mainly because a series of active measures of protecting permafrost were taken for stabilizing the CMR foundation soils.On the one hand,we should try our best to minimize the influences that engineering activities have exerted on ecology and environment,on the other hand,the positive measures have made improvements to prevent the permafrost environment from deterioration.

Preliminary study on road-region ecosystem stability evaluation

A scientific and rational evaluation on road-region ecosystem stability is the premise to properly deal with the relationship between highway constructing and ecological environment protecting to a sustainable development. Based on the connotative meaning and the procedure of evaluation on road-region ecosystem stability, this paper studied the principles and the method on determining the evaluation index system on road-region ecosystem stability. It put forward an index system for assessing road-region ecosystem stability as a reference. On the basis of detailed analyze of the multidimensional space of road-region ecosystem, a new multi-objective comprehensive evaluation method for road-region ecosystem stability is presented and a calculation tormula for multi-objective comprehensive level of road-region ecosystem stability. This method was used to evaluate road-region ecosystem stability of Lin-Chang highway. This method possessed definite theoretical value and reliability in practice.

Assessment of Habitat Suitability in the Upper Reaches of the Min River in China

HabRat richness influences and even determines biological diversity. Plant habitat suitability assessment can provide technical guidance and information support for ecological restoration. Thirteen factors in three categories of terrain, meteorology and soil were chosen to build a habitat suitability assessment index framework in the Upper Reaches of the Min River, based on the local natural environment and the actual influencing factors of vegetative growth. Combined with the Analytic Hierarchy Process （AHP） and entropy method, which were used to calculate weights of indexes, habitat suitability was studied by using a multi-objective linear weighting model and geographic information systems （GIS） spatial analysis techniques. The assessment results are as follows： Altitude, soil stability, aspect and slope have more important effects on plant habitat suitability in the Upper Reaches of the Min River, and their weights are o.311, 0.260, o.198 and o.125, respectively. Suitable and sub-suitable habitats cover 4431.8o km2 and 6171.12 km2, respectively; most of which are distributed along both sides of rivers and have higher suitability. Unsuitable habitats cover the largest area （6679.76 km2）, accounting for 29.83% of the whole area; and the worst unsuitable habitats are 5107.23 km2 （22.81%）; they account for more than half of the study area. These results indicate that the plant habitat in the Upper Reaches of the Min River is poor and ecological restoration is both urgent and difficult. Therefore, based on the principle of taking measures suitable to the habitat in ecological restoration projects, ecological and engineering measures should be combined to have better effects, while increasing the strength of ecological protection.

Ecological Suitability Assessment and Introduction Experiment on Rosa damascena trigintipetala in Sichuan Province, China

This study comprehensively considered the climate, soil, terrain, and land-use type conditions suitable for Rosa damascena trigintipetala and further established an ecological suitability evaluation model of R. damascena triginffpetala in Sichuan Province, China, based on geographic information systems （GIS） and Agro-Ecological Zone （AEZ） models; then we assessed the different ecological suitability grades for this species in Sichuan Province of China and summarized the suitable land areas and spatial distribution pattern for R. damascena trigintipetala. The results show that the suitable areas （which contain highly suitable, generally suitable, and critically suitable areas） for R. damascena trigintipetala are 307.268×lO4 hm^2, which accounts for 6.34% of the total provincial area. Results also indicate that shrub land and open forest land are the major land-use types suitable for R. damascena trigintipetala, with the suitable areas of 303.162×lO4 hm2 （6.25% of the total provincial area）. An introduction test was conducted in one of the suitable areas, Xichang City, which demonstrated that R. damascena trigintipetala grows well at theexperimental sites. The quality of rose oil extracted from R. damascena trigintipetala planted in Xichang meets the Bulgaria Rose Oil Standard, thus verifying the accuracy and reliability of the ecological suitability assessment results.

A climatic environmental performance assessment method for ecological city construction:Application to Beijing Yanqi Lake

In contrast to the input perspective for evaluating planning metrics, this research takes the climatic environmental output effects as the starting point for assessing ecological city construction. Based on approaches such as observation data analysis, meteorological model simulation, and remote sensing, a set of climatic environmental performance assessment methods is developed and established. These methods mainly focus on surface ventilation assessment and urban thermal environment assessment. With the Yanqi Lake ecological development demonstration area located in Huairou district, Beijing as an example, the assessment of the local climatic environment before and after the construction are conducted, and relevant policy suggestions for urban planning and construction are presented. The results show that after development, the ventilation capacity will decrease overall and the ventilation potential index will decrease from 0.53 to 0.44. While this is not a large reduction, and is still at a favorable level, the ventilation potential in some local areas will markedly decrease. Furthermore, the thermal environment will become poorer to some extent; the urban heat island(UHI) area and intensity will increase compared with the current situation;continuous heat islands may occur in local areas; the UHI potential index of the core area will rise from 0.0878 to 0.1217(still a favorable level).Therefore, urban surfaces should be carefully developed and arranged during planning. It is suggested that the negative impacts of large areas of urban construction on the local climatic environment in the Yanqi Lake could be mitigated by 1) strengthening the airflow by introducing fresh,cold, northwesterly air via constructed ventilation corridors, 2) increasing the number of ecological cold sources, particularly for water bodies and green belts to prevent the UHI in the southern region of Yanqi Lake from becoming linked with each other, and 3) considering a pre-program before sub-domain and building planning to obtain optimum building locations. Different construction standards should be developed for different ventilation potential and UHI intensity levels. For strong heat island areas, land areas should be reserved to serve as cold sources.

Sustainability Evaluation of Different Systems for Sea Cucumber(Apostichopus japonicus) Farming Based on Emergy Theory

Emergy analysis is effective for analyzing ecological economic systems. However, the accuracy of the approach is af- fected by the diversity of economic level, meteorological and hydrological parameters in different regions. The present study evalu- ated the economic benefits, environmental impact, and sustainability of indoor, semi-intensive and extensive farming systems of sea cucumber （Apostichopus japonicus） in the same region. The results showed that A. japonicus indoor farming system was high in input and output （yield） whereas pond extensive farming system was low in input and output. The output/input ratio of indoor fann- ing system was lower than that of pond extensive farming system, and the output/input ratio of semi-intensive farming system fell in between them. The environmental loading ratio of A.japonicus extensive fanning system was lower than that of indoor farming sys- tem. In addition, the emergy yield and emergy exchange ratios, and emergy sustainability and emergy indexes for sustainable devel- opment were higher in extensive farming system than those in indoor farming system. These results indicated that the current exten- sive farming system exerted fewer negative influences on the environment, made more efficient use of available resources, and met more sustainable development requirements than the indoor farming system. A. japonicus farming systems showed more emergy benefits than fish fanning systems. The pond fanning systems ofA. japonicus exploited more free local environmental resources for production, caused less potential pressure on the local environment, and achieved higher sustainability than indoor farming system.

Research Progress on Evaluation Frameworks of Regional Ecological Sustainability

As natural ecosystems provide the material basis and fundamental support for regional sustainable devel-opment,the sustainability of natural ecosystems is an important prerequisite and a viable approach for the achievement of regional sustainable development.It is also the final criteria to assess whether sustainable development paradigm is successful.Along with the increasing impacts of human activities on natural ecosystems,the evaluation of regional ecological sustainability has become one of the key issues for research on macro ecology and sustainable development.Based on different unit of indicators,this study firstly groups the evaluation frameworks of regional ecological sus-tainability into three major types:comprehensive index evaluation with dimensionless unit,monetary valuation,and biophysical quantity measurement.We then discuss and compare these types in terms of basic principles,scope of ap-plications,advantages and shortcomings.Finally,drawn on the discussion about characteristics of ecological sustain-ability,we outline the current trend and future directions of regional ecological sustainability evaluation,for instance,transition from sustainable development evaluation to sustainability science,integration of goal-oriented and problem-solving approaches,combination of spatial pattern analysis and ecological sustainability evaluation,and en-hancement of ecological sustainability evaluation at landscape scale.

Seed Protein Electrophoresis for Assessment of Genetic Diversity among Festuca pratensis Huds, Local Ecotypes

Fifty two accessions of Festuca pratensis Huds. were analysed of which 18 had been collected in Switzerland and 32 in Bulgaria. SDS-PAGE of seed proteins was implemented to detect genetic variation among ecotype populations using a modification of UPOV method for barley. The modification concerns mainly protein extracting procedure as detailed described in the protocol. The two cultivars Preval and Cosmolit were used as standards. Cluster analyses and correspondence analyses/scatter plot were used as statistic approaches for determining genetic diversity among individual ecotypes and groups of ecotypes. Electrophoretic spectra of proteins show clear differences among local accessions in relation to their origin. In Swiss ecotypes 32 protein fragments were determined whereas in Bulgarian local populations their number was 68. Each of the two eco-groups possesses fragments that appear in all accessions of the group. The number of monomorphic bands within Bulgarian local ecotypes is four whereas their number in Swiss ecotypes is 12. Four monomorphic bands appearing in all proteinograms no difference of eco-groups was identified with Rm values of： 0.43, 0.55, 0.58, 0.82. A higher level of protein band polymorphism was proven in Bulgarian ecotypes in comparison with Swiss ecotypes. Thirty seven polymorphic bands occurred exclusively in the Bulgarian local ecotypes and had a frequency of 0.03 or higher whereas within Swiss ecotypes was detected one unique protein fragment. SDS-PAGE ＂fingerprinting＂ is suggested as a fast and easy approach to differentiate F. pratensis ecotypes by their origin as well for detection of foreign germplasm for inclusion in breeding programs.