EXCEL在化探样品分析质量监控图绘制中的应用研究   总被引：1，自引：0，他引：1  

孙本峰 《安徽地质》1999,(2)

用计算机绘制化探样品分析质量监控图,革除了手工绘图弊端,大大提高工作效率,尤其是用普通打印机替代绘图仪,展示了其广阔的应用前景。  相似文献   

Process and Contextual Factors Supporting Action-Oriented Learning: A Thematic Synthesis of Empirical Literature in Natural Resource Management     

Monika Suškevičs  Thomas Hahn  Romina Rodela 《社会与自然资源》2019,32(7):731-750

Despite a long-term focus on learning in natural resource management (NRM), it is still debated how learning supports sustainable real-world NRM practices. We offer a qualitative in-depth synthesis of selected scientific empirical literature (N?=?53), which explores factors affecting action-oriented learning. We inductively identify eight key process-based and contextual factors discussed in this literature. Three patterns emerge from our results. First, the literature discusses both facilitated participation and self-organized collaboration as dialogical spaces, which bridge interests and support constructive conflict management. Second, the literature suggests practice-based dialogs as those best able to facilitate action and puts a strong emphasis on experimentation. Finally, not emphasized in existing reviews and syntheses, we found multiple evidence about certain contextual factors affecting learning, including social-ecological crises, complexity, and power structures. Our review also points at important knowledge gaps, which can be used to advance the current research agenda about learning and NRM.  相似文献   

疣荔枝螺形态性状对质量性状的影响     

田传远  夏珮伦  张嘉荣  于瑞海  郑小东  顾忠旗 《中国海洋大学学报(自然科学版)》2020,(2):37-44

随机抽取100只同龄疣荔枝螺(Thais clavigera Kuster),开展其形态性状与体质量和软体部质量的相关与通径分析。实验选取并测量了壳长(X1)、壳宽(X2)、壳厚(X3)、壳口长(X4)和壳口宽(X5)等5项形态性状以及体质量(Y)和软体部质量(Z)等2项质量性状,运用相关分析、通径分析和多元回归分析等方法分析了各形态性状对体质量和软体部质量的影响。相关分析表明,疣荔枝螺各项性状间的相关均呈极显著(P<0.01)。通径分析表明,形态性状对体质量直接影响大小的顺序为壳长(0.459)>壳宽(0.277)>壳厚(0.209)>壳口宽(0.140);壳长对体质量的直接决定系数最大(0.220),是影响体质量的主要因素。通过多元回归分析,建立了形态性状对体质量的回归方程:Y=-9.714+0.220X1+0.204X2+0.195X3+0.151X5。  相似文献   

Qualitative Explorations in Health Geography: Using Pragmatism and Related Concepts as Guides   总被引：1，自引：0，他引：1  

Malcolm P. Cutchin 《The Professional geographer》1999,51(2):265-274

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Community Development Approaches to Heart Health Promotion: A Geographical Perspective     

Kerry L. Robinson  Susan J. Elliott 《The Professional geographer》1999,51(2):283-295

This paper reports results of a qualitative study of community development approaches to heart health promotion in Ontario. Cardiovascular disease (CVD) represents a substantial proportion of the burden of illness experienced by western industrialized countries. Biomedical research has implicated lifestyle choices and socioeconomic conditions as primary determinants of CVD. There has been a resultant shift from curative to preventive/health promoting strategies to reduce this burden of illness. The Canadian Heart Health Initiative-Ontario Project (CHHIOP), a two-stage (quantitative and qualitative) longitudinal study, was designed to address issues of heart health promotion through the investigation and strengthening of community-based heart health activities in both the formal and informal public health systems. The study reported on in this paper forms one part of the qualitative stage and focuses on how community relationships and community development approaches play out in local contexts to shape the reality of (heart) health promotion practice. Analysis of key informant interviews using Ethnograph illustrates the centrality of community context, the lack of a common understanding of key concepts (e.g., community development), and the emergence of a shift in health agencies' ways of doing business characterized by increased partnering and collaboration in the delivery of (heart) health promotion programs. Local perspectives and the dynamics of intra-community relations were allowed to emerge through the use of qualitative approaches implying a need for place-sensitive (heart) health promotion strategies.  相似文献   

Methodological Issues in Researching Migration     

Allan M. Findlay  F. L. N. Li 《The Professional geographer》1999,51(1):50-59

Population geographers should consider a mixed methods approach to thestudy of migration. This methodological position arises in response to the challenges of contemporary social theory. It is argued that application of structuration theory favours use of a diversity of methods to investigate the recursive relationship between agency and structure. Similarly a realist stance, as advocated by Sayer (1992), leads to a mixing of methods in order to carry out the synthesising tasks expected of geographers. Postmodernism, when interpreted as method, also points the researcher to consider adopting flexible research practices in order to capture the multiplicities of meaning associated with migration and place. These points are illustrated by a case study of migration to and from Hong Kong.  相似文献   

基于云模型和差异驱动原理的农用地分等研究     

侯毅  罗少峰 《测绘科学》2010,35(1):124-126,148

在农用地分等的过程中,评价因素涵盖了定量和定性的数据,定量数据准确地反映该因子的特征,而定性因素则无法用准确的数据来表示的。语言值或者概念和数学符号的最大区别,就是其中的不确定性。此外专家打分确定的权重也存在随机性,各评价因素对农用地等别影响的侧重也不能得到确切的再现。针对以上理由,本文提出采用云模型的不确定性分析和基于差异驱动原理的赋权,试图改进现行的农用地分等方法中因素作用的判读及其对分等结果的影响。  相似文献   

解决物探异常解释多解性的一次尝试     

刘士毅  田黔宁  赵金水  何贤明  焦孟梅  胡麟臻  刘玲 《物探与化探》2010,34(6)

以利用物探资料寻找隐伏铁矿的工作为例,通过对某地区重磁电十字剖面资料的推断解释,总结了减少物探异常解释多解性的思路与做法,提出在布置外业工作和收集资料时,就应考虑为减少多解性取全取准所需的各类用作约束的资料,认为采用逐一判断—排除的方法是可选途径。  相似文献   

空间目标的方向关系定性推理   总被引：5，自引：0，他引：5  

吴静  程朋根  陈斐  毛建华 《测绘学报》2006,35(2):160-165

由于空间问题固有的复杂性和不确定性,空间关系的描述和推理普遍采用定性的方法来符合人们的认知。方向关系是一类重要的空间关系,以往对方向关系的定性推理大多在2个参照系下进行,将目标对象抽象为点或者认为目标的大小近似相等。为了更细致地推理方向关系,提出四种不同情况下基于1个参照系的定性方向关系推理方法,并就本方法存在的问题和今后的研究方向提出了一些看法和思路。  相似文献   

The Implications of Psychoanalysis for Qualitative Methodology: The Case of Interviews and Narrative Data Analysis*     

Mary E. Thomas 《The Professional geographer》2007,59(4):537-546

In this article I ask to what extent geographers can draw on psychoanalytic theory when examining interview data. I consider Freud's theory of the mind and its unconscious processes to ask how bringing the unconscious to bear on identity studies potentially impacts qualitative research on subjectivity and identification. Existing geographic debate on psychoanalytic theory and methods provides an organizing framework for my argument. Although the article advocates an ontology of the psychoanalytic subject, I suggest that researchers must avoid psychoanalyzing research subjects. This distinction limits the ways in which scholars can “read” personal narratives for unconscious processes.  相似文献