Sustainable transformation

  • 文章类型: Journal Article
    确定伐木产品(HWP)中的木材碳(C)分数(CFs)或以单位质量为基础的木材中元素C的浓度对于准确计算建筑环境中的C至关重要。对具体的C的大多数估计都假设所有木材建筑材料按质量计由50%C组成:从有关树木和森林尺度C估计的文献中出现的错误假设,这已被证明会导致C会计中的重大错误。这里,我们使用来自活树的已发布的木材CF数据,除了对锯材的实验室分析,量化HWP的可推广木材CFs。我们的分析表明,木材中的木材CFs平均为51.7%,显著偏离50%的默认木材CF,以及来自全球活木中的CFs(所有物种平均占47.6%,在通常不用于建筑的树种中占47.1%)。此外,木材中的挥发性CF-即,木材样品加热时C的损失量,但在C会计中经常被忽视-低于活木的波动性CF,但显著>0%表明工业木材干燥过程去除一些,但不是全部,挥发性C基化合物。我们的结果表明,在估算建筑环境中的C存储时,经验支持的建筑材料木材CFs可以纠正有意义的系统偏差。
    Determining wood carbon (C) fractions (CFs)-or the concentration of elemental C in wood on a per unit mass basis-in harvested wood products (HWP) is vital for accurately accounting embodied C in the built environment. Most estimates of embodied C assume that all wood-based building material is comprised of 50 % C on a per mass basis: an erroneous assumption that emerges from the literature on tree- and forest-scale C estimation, which has been shown to lead to substantial errors in C accounting. Here, we use published wood CF data from live trees, alongside laboratory analyses of sawn lumber, to quantify generalizable wood CFs for HWPs. Wood CFs in lumber average 51.7 %, deviating significantly from a 50 % default wood CF, as well as from CFs in live wood globally (which average 47.6 % across all species, and 47.1 % in tree species not typically employed in construction). Additionally, the volatile CF in lumber-i.e., the quantity of C lost upon heating of wood samples, but often overlooked in C accounting-is lower than the volatile CF in live wood, but significantly >0 % suggesting that industrial lumber drying processes remove some, but not all, of volatile C-based compounds. Our results demonstrate that empirically-supported wood CFs for construction material can correct meaningful systematic biases when estimating C storage in the built environment.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    背景:护理路径概念的定义存在混淆,现有的概念框架包含各种不足,导致实施困难。在当前全球医疗体系快速变化的背景下,非常需要一个可以指导实施的标准化定义和综合框架。这项研究旨在提出一个准确和最新的护理途径定义和一个综合的概念框架。
    方法:一种结合系统综述的创新混合方法,概念分析和文献计量分析进行了定性总结,定量,和混合方法研究。搜索的数据库是PubMed,Embase和ABI/Inform。然后评估纳入研究的方法学质量。
    结果:44项研究符合纳入标准。使用概念分析,我们形成了细粒度的理解,一个综合的概念框架,并通过提出分为七个属性的28个子类别,对以患者为中心的护理途径进行了最新定义。这个概念框架考虑了操作和社会现实,并支持临床的改进和可持续转型。行政,和组织实践,以造福患者和护理人员,在考虑专业经验的同时,组织约束,和社会动态。提出的流体和有效途径的属性是(i)患者和护理人员的中心性,(ii)参与护理途径的专业演员的定位,(iii)通过护理提供过程的运营管理,(四)协调结构的特殊性,(五)系统和组织的结构背景,(vi)信息系统和数据管理的作用,以及(vii)学习系统的出现。前提是路径实施的关键成功因素。通过使用后果和经验参考,如护理途径干预的结果和证据,我们超越了单一的理论目标,提出概念框架在医疗保健管理中的应用。
    结论:本研究开发了以患者为中心的护理路径的最新定义和综合概念框架。我们的框架包括28个子类别,分为七个属性,在复杂的护理途径干预中应考虑这些属性。这些属性的表述,作为成功因素的先行因素和作为潜在结果的后果,允许此模型在任何上下文中对任何路径进行操作。
    BACKGROUND: Confusion exists over the definition of the care pathway concept and existing conceptual frameworks contain various inadequacies which have led to implementation difficulties. In the current global context of rapidly changing health care systems, there is great need for a standardized definition and integrative framework that can guide implementation. This study aims to propose an accurate and up-to-date definition of care pathway and an integrative conceptual framework.
    METHODS: An innovative hybrid method combining systematic review, concept analysis and bibliometric analysis was undertaken to summarize qualitative, quantitative, and mixed-method studies. Databases searched were PubMed, Embase and ABI/Inform. Methodological quality of included studies was then assessed.
    RESULTS: Forty-four studies met the inclusion criteria. Using concept analysis, we developed a fine-grained understanding, an integrative conceptual framework, and an up-to-date definition of patient-centered care pathway by proposing 28 subcategories grouped into seven attributes. This conceptual framework considers both operational and social realities and supports the improvement and sustainable transformation of clinical, administrative, and organizational practices for the benefit of patients and caregivers, while considering professional experience, organizational constraints, and social dynamics. The proposed attributes of a fluid and effective pathway are (i) the centricity of patients and caregivers, (ii) the positioning of professional actors involved in the care pathway, (iii) the operation management through the care delivery process, (iv) the particularities of coordination structures, (v) the structural context of the system and organizations, (vi) the role of the information system and data management and (vii) the advent of the learning system. Antecedents are presented as key success factors of pathway implementation. By using the consequences and empirical referents, such as outcomes and evidence of care pathway interventions, we went beyond the single theoretical aim, proposing the application of the conceptual framework to healthcare management.
    CONCLUSIONS: This study has developed an up-to-date definition of patient-centered care pathway and an integrative conceptual framework. Our framework encompasses 28 subcategories grouped into seven attributes that should be considered in complex care pathway intervention. The formulation of these attributes, antecedents as success factors and consequences as potential outcomes, allows the operationalization of this model for any pathway in any context.
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  • 文章类型: Journal Article
    在德国的案例研究中,我们沿着可持续性的三大支柱研究当前的食物消费,以评估影响消费者饮食决策的外部因素。我们调查饮食在多大程度上满足营养需求(社会因素),饮食对环境的影响(生态因素),以及食品价格对购买行为的影响(经济因素)。为此,我们比较了两种饮食建议(植物性,杂食性)与现状,我们研究不同的消费方式(传统的,有机农产品)。此外,我们评估了三种商店类型的1446种食品价格(有机商店,超市,和折扣店)。有了这个,我们能够评估和比较30种不同的食物篮的健康状况,环境,和经济影响。结果表明,购买决策只受到健康相关因素的轻微影响。此外,很少有消费者将他们的饮食与低环境影响保持一致。相比之下,很大一部分消费者选择廉价食品,不管健康和环境的后果。我们发现价格是,可以说,从可持续性的角度来看,食物选择的主要因素。政策制定者应采取行动,从财政上激励消费者支持健康和环保的饮食。否则,现状进一步驱使特别贫困的消费者转向不健康和破坏环境的消费。
    In a case study of Germany, we examine current food consumption along the three pillars of sustainability to evaluate external factors that influence consumers\' dietary decisions. We investigate to what extent diets meet nutritional requirements (social factor), the diets\' environmental impact (ecological factor), and the food prices\' influence on purchasing behavior (economic factor). For this, we compare two dietary recommendations (plant-based, omnivorous) with the status quo, and we examine different consumption styles (conventional, organic produce). Additionally, we evaluate 1446 prices of food items from three store types (organic store, supermarket, and discounter). With this, we are able to evaluate and compare 30 different food baskets along their health, environmental, and economic impact. Results show that purchasing decisions are only slightly influenced by health-related factors. Furthermore, few consumers align their diet with low environmental impact. In contrast, a large share of consumers opt for cheap foods, regardless of health and environmental consequences. We find that price is, arguably, the main factor in food choices from a sustainability standpoint. Action should be taken by policy makers to financially incentivize consumers in favor of healthy and environmentally friendly diets. Otherwise, the status quo further drives especially underprivileged consumers towards unhealthy and environmentally damaging consumption.
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  • 文章类型: Journal Article
    This review article examines how social science literature co-produces various imaginaries of forest-based bioeconomy transformations and pathways for reaching desired ends. Based on an analysis of 59 research articles, we find that despite a growing number of social sciences studies on the forest-based bioeconomy, much of the research tends to replicate a bioeconomy imaginary articulated in EU and national bioeconomy policies and strategies. Accordingly, the research primarily reproduces a weak approach to sustainability, which prioritize economic growth and competitiveness. Expectations are largely directed at national and regional corporate interests and forest industrial renewal, while the state has a supportive rather than restricting role. We discuss the findings against the role of social sciences, and conclude that social science scholars may adopt various strategies if interested in opening up forest-based policy debates and offer alternative imaginaries of sustainable bioeconomy transformations.
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