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1.
根据绿色供应链管理绿色度的概念,建立了企业实施绿色供应链管理的绿色度评价指标体系。鉴于指标的多层次、多因素,采用了层次分析法和错误函数综合分析了企业实施绿色供应链管理,并用案例验证了该AHP-Error模型的可行性和实用性。  相似文献   

2.
为了定量分析植被类型和蓄水层设置对干旱时期拓展型绿色屋顶蒸散发特性的影响,本实验设计两种形式(有无蓄水层)和三种植被类型(麦冬草、佛甲草或姬十二单)的6个绿色屋顶模型桶,通过对绿色屋顶进行连续3个月的现场监测。结果表明,蓄水层设置显著提高了基质含水量,并在降雨后一定时间(约3天)内保持较高的稳定含水量;有蓄水层绿色屋顶实际蒸散发(actual daily evapotranspiration,AET)总是高于无蓄水层绿色屋顶,平均AET提高0.6 mm/d;经历了13 d的干旱时间,蓄水层设置对维持佛甲草的蒸腾速率最有效,相比于无蓄水层的佛甲草提升49 %的气孔导度值;蓄水层对增加种植姬十二单的绿色屋顶AET效果最好,平均AET增加了1.1 mm/d。可见本研究可为旱涝季节分明的地区绿色屋顶植被选择和蓄水层设置提供基础数据支撑和参考借鉴。  相似文献   

3.
近来政府发布了《绿色工厂评价通则》,制定了绿色工厂评价指标体系,引导企业创建绿色工厂,推动绿色转型升级,研究在此背景下,考虑政府根据产品绿色度实施奖惩,构建由一个制造商、一个再制造商和一个回收处理商组成的闭环供应链,建立政府对制造商征收环境税,同时根据产品绿色度给予奖惩,对再制造商和回收处理商进行补贴情况下的博弈模型,分析了政府财政政策对制造商绿色度决策、各节点企业产量价格最优决策及利润的影响.研究表明:当产品原始绿色度较高时,环境税和再制造补贴会降低产品的绿色度设计,当原始绿色度较低时,环境税和再制造补贴会提高产品的绿色度设计,绿色度与奖惩力度总是正相关;政府财政政策下制造商和回收处理商利润下降,再制造商利润增加,闭环供应链整体利润增加;政府可以通过合理制定环境税、补贴及绿色度奖惩系数,推动绿色制造实现新产品和再制造品同步发展和推广.  相似文献   

4.
基于模糊理论的绿色供应链绩效评价研究   总被引:6,自引:0,他引:6  
在对供应链绩效及其供应链绿色度分析的基础上,按照科学、可比、实用等原则,建立了顾客导向评价、供应链密切度评价、供应链经济效益评价指标、供应链绿色化评价4个方面多层次绿色供应链绩效评价体系。通过模糊评判法对绿色供应链进行了绩效评价,采用基于差距分析的标杆法进行了评价结果的分析,找出了被测评企业的绿色供应链与目标供应链之间的绩效差距,为企业绿色供应链的优化提供了科学依据。  相似文献   

5.
绿色供应链中环境管理绩效模糊综合评价   总被引:28,自引:0,他引:28  
绿色供应链是工业发展的一种趋势,而绩效评价是供应链实施的关键。在国内外文献的基础上,根据绿色供应链的内涵和环境管理标准(ISO14000系列)设计了环境管理绩效——供应链绿色度的评价指标体系,即将供应链流程的环境影响度、供应链的能源消耗度、资源的回收再利用性、环境声誉等4个方面作为供应链绿色度的主要衡量指标,并将各个指标具体化,形成一个二级指标评价体系,同时讨论了引入绿色度评价后对其他传统绩效指标的影响。根据指标评价体系的特点,进行了多层次模糊综合评价,最后给出一个算例进行说明,为绿色供应链系统的管理决策提供了理论依据。  相似文献   

6.
绿色责任作为企业的社会责任之一,使用经济法对企业绿色生产责任进行规制具有必要性。为了完善经济法对企业绿色生产责任的规制,应当在考察国外实践的基础上,不断健全企业绿色生产相关的法律标准,完善绿色生产税收规定,加大绿色生产的财政投入,建立企业绿色生产相关保险制度,提升我国企业绿色生产的国际竞争力。  相似文献   

7.
以河南为研究对象,从资源节约、环境友好和产出效益3个层面选取13个评价指标,构建农业绿色发展评价指标体系,采用熵权TOPSIS组合模型以及障碍度模型分析河南农业绿色发展水平及其障碍因素。结果表明,2010—2020年河南农业绿色发展水平总体呈现U型变化趋势,其中环境友好是影响河南农业绿色发展水平的主要因素;环境友好相对接近度走向与总体趋势相似,波动性较强;从障碍度分析结果看,环境友好对农业绿色发展的阻碍作用最强。为了农业绿色可持续稳定发展,需要转变农业生产方式,推动农业规模化、标准化、专业化经营,加快绿色技术创新,促进生态环境与农业经济协调发展。  相似文献   

8.
装备制造企业绿色度评估的测评指标建立与权重分配是评估的关键问题,基于已经设计出的装备制造业绿色度评估指标体系和综合评价数学模型,研发了评估系统维护和权重录入计算系统软件,设计了定性与定量相结合的权重模糊录入与计算方法,供决策者们实时调整测评指标数目、修改指标名称、调整权重级差,能够适应不同类型企业的要求.设计了评估技术...  相似文献   

9.
以沪深A股上市公司2011—2021年相关数据为样本,考察ESG表现对企业绿色创新绩效的影响和分析师关注度发挥的中介作用。结果表明:企业ESG表现越好,其企业绿色创新水平越突出。将绿色创新划分为绿色创新质量和绿色创新数量进行检验,结果表明:企业ESG表现越好,其企业绿色创新质量和绿色创新数量越高。机制检验发现,良好的ESG表现提高了分析师关注度,进而促进了企业绿色创新能力的提高。基于异质性视角发现,相对于国企,在非国企中,良好的ESG表现可以更有效地推动企业绿色创新质量和数量的提升。在融资约束低的企业中,企业ESG表现越好,对企业绿色创新水平的提升效果越强。该研究意在为企业通过ESG表现提升绿色创新绩效提供启发。  相似文献   

10.
建立了真空滤油机生产过程绿色度综合评价指标体系和递阶层次结构模型,采用模糊层次分析法,综合评价了真空滤油机的绿色度,为真空滤油机生产工艺的设计、评价提供了参考依据。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

14.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

15.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

16.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

17.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

18.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

19.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

20.
1 Rise of studies on climate change's effects on biodiversity
Until the 1980s, climate change and biodiversity were studied as two independent disciplines for more than a century. In 1992, the Ecological Society of America's annual report named climate change, biodiversity, and the sustainable ecological system as the three major global environmental issues of the twenty-first century [1].  相似文献   

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