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PORLES:A Parallel Object Relational Database System
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作者 Sun Yong\|qiang, Xu Shu\|ting, Zhu Feng\|hua, Lai Shu\|huaDepartment of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200030,China 《Wuhan University Journal of Natural Sciences》 CAS 2001年第Z1期100-109,共10页
We developed a parallel object relational DBMS named PORLES. It uses BSP model as its parallel computing model, and monoid calculus as its basis of data model. In this paper, we introduce its data model, parallel que... We developed a parallel object relational DBMS named PORLES. It uses BSP model as its parallel computing model, and monoid calculus as its basis of data model. In this paper, we introduce its data model, parallel query optimization, transaction processing system and parallel access method in detail. 展开更多
关键词 parallel object relational database BSP model data model query optimization
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ORM中基于语义相似性的查询缓存替换策略
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作者 周红静 杨金民 《湖南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第11期73-77,共5页
针对查询的时间局部性特点,提出基于语义缓存查询SC(semantic comparability)替换策略.该策略通过分析缓存项与查询项在关系、条件及查询属性3个方面的相关性,并结合数据访问频率将相似性最小的缓存项予以淘汰.实验结果表明,基于查询序... 针对查询的时间局部性特点,提出基于语义缓存查询SC(semantic comparability)替换策略.该策略通过分析缓存项与查询项在关系、条件及查询属性3个方面的相关性,并结合数据访问频率将相似性最小的缓存项予以淘汰.实验结果表明,基于查询序列的先后关系,有选择性的保留与查询具有继承、关联等关系的缓存项,能够得到更高的查询命中率及更短的查询响应时间.在缓存空间相同的情况下,SC策略优于LRU策略. 展开更多
关键词 面向对象编程 关系数据库系统 ORM(Object—relational Mapping) 语义缓存 语义局部性
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How does the‘environment’come to the person?The‘ecology of the person’and addiction 被引量:2
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作者 Felix Tretter Henriette Loeffler-Stastka 《World Journal of Psychiatry》 SCIE 2021年第11期915-936,共22页
Currently,psychiatry lacks a field that can be called“theoretical psychiatry”,which uses theoretical concepts and explanatory models:The main stream of research is to collect data of all kinds in the hope that the c... Currently,psychiatry lacks a field that can be called“theoretical psychiatry”,which uses theoretical concepts and explanatory models:The main stream of research is to collect data of all kinds in the hope that the computational Big Data approach will shed a bright light on the black box of mental disorders.Accordingly,the biology-based Research Domain Criteria of the National Institute of Mental Health have been established.However,as philosophical analyses of concepts and methods have shown,several epistemological gaps stand in the way of a consistent multilevel understanding of mental disorders.Also,the implicit ontological problems in the biological reduction of the psychosocial level and in the integration of so-called hard and soft disciplines are mostly left out.As a consequence,a non-reductive psychological theory of mental disorders is sought that also integrates correlating biological and sociological issues.In this context,one example of promising nonreductive psychiatric research is the option of systems/network psychopathology.The possibilities for integrating different psychological perspectives are highlighted for the field of addiction research and treatment,where pragmatic behaviorist approaches dominate over the theorybased practice of psychoanalysis.In comparing the theoretical constructs of these two approaches,the relevance of the concept of“(social)environment”as the wealth of influential sociocultural factors is discussed at levels superior to the interpersonal micro-level,namely the organizational meso-and societal macro level,which is not sufficiently considered in current biopsychiatry.On this basis of argumentation,the usefulness of grounding and framing psychiatry through the field of ecological sciences,especially human ecology,is demonstrated.Finally,to this end,an outline of an ecological model of mental health and illness is presented. 展开更多
关键词 Systems/network psychopathology Theoretical psychiatry Ecology of the person Psychoanalytic object relations theory ADDICTION Mind Resilience
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Associations between the Rorschach Ego Impairment Index and Measures on Intrapsychic and Interpersonal Functioning
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作者 Jaakko Stenius Olavi Lindfors +3 位作者 Risto Antikainen Jarl Wahlstr?m Laura Sares-J?ske Paul Knekt 《Open Journal of Psychiatry》 2018年第1期1-19,共19页
The Rorschach Ego Impairment Index-2 (EII-2) has shown considerable validity as a measure of personality disturbance. However, few studies have been conducted on the associations between the EII-2 and measures related... The Rorschach Ego Impairment Index-2 (EII-2) has shown considerable validity as a measure of personality disturbance. However, few studies have been conducted on the associations between the EII-2 and measures related to ego strength and interpersonal capacities in mood and anxiety disorder patients. This study examined the strength of associations between the EII-2 and its subcomponents with measures of psychological suitability for psychotherapy, personality functioning, and interpersonal problems. A total of 315 outpatients with mood or anxiety disorders were assessed with the Rorschach Comprehensive System (RCS), comprising the EII-2, the Suitability for Psychotherapy Scale (SPS), the Inventory of Interpersonal Problems (IIP-64), and the Quality of Object Relations Scale (QORS), as part of a pre-treatment evaluation. The relatively weak associations found in the study between the EII-2 and the other measures were mostly in the hypothesized direction and often modified by personality pathology. Of the EII-2 subcomponents, the Good Human Representation (GHR) variable was associated with the SPS. The subcomponent Critical Contents were associated with the IIP and the subcomponent WSum6 with the IIP and QORS. Further research is needed to clarify whether the EII-2 has incremental validity in predicting the treatment outcome and alliance in comparison to interview-based and self-report measures. 展开更多
关键词 RORSCHACH Ego Impairment Index Suitability for Psychotherapy Scale Inventory of Interpersonal Problems Quality of Object Relations Scale
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Constitutive relations for the shear band evolution in granular matter under large strain 被引量:1
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作者 Stefan Luding 《Particuology》 SCIE EI CAS CSCD 2008年第6期501-505,共5页
A so-called "split-bottom ring shear cell" leads to wide shear bands under slow, quasi-static deformation. Unlike normal cylindrical Couette shear cells or rheometers, the bottom plate is split such that the outer p... A so-called "split-bottom ring shear cell" leads to wide shear bands under slow, quasi-static deformation. Unlike normal cylindrical Couette shear cells or rheometers, the bottom plate is split such that the outer part of it can move with the outer wall, while the other part (inner disk) is immobile. From discrete element simulations (DEM), several continuum fields like the density, velocity, deformation gradient and stress are computed and evaluated with the goal to formulate objective constitutive relations for the powder flow behavior. From a single simulation, by applying time- and (local) space-averaging, a non-linear yield surface is obtained with peculiar stress dependence. The anisotropy is always smaller than the macroscopic friction coefficient. However, the lower bound of anisotropy increases with the strain rate, approaching the maximum according to a stretched exponential with a specific rate that is consistent with a shear path of about one particle diameter. 展开更多
关键词 Ring shear cell Shear bands DEM simulation Micro-macro transition Objective constitutive relations Yield stress fluid
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