临终患者不同救治态度的转归及影响因素分析

分析ICU终末期患者不同救治方式的临床转归及其影响因素。根据患者家属救治态度分为三组,1组明确要求积极救治;2组要求维持现有治疗;3组放弃所有治疗。结果发现积极还是放弃治疗的选择与患者家属经济状况明显相关,家庭经济条件较好的患者家属倾向于选择积极治疗,经济差者倾向于选择放弃治疗。1组患者ICU住院时间长、日均费用最高,...     

The points of concepts: their types,tensions, and connections

ABSTRACT

In the literature seeking to explain concepts in terms of their point, talk of ‘the point’ of concepts remains under-theorised. I propose a typology of points which distinguishes practical, evaluative, animating, and inferential points. This allows us to resolve tensions such as that between the ambition of explanations in terms of the points of concepts to be informative and the claim that mastering concepts requires grasping their point; and it allows us to exploit connections between types of points to understand why they come apart, and whether they do so for problematic ideological reasons or for benignly functional reasons.     

A reexamination of mental arithmetic models and data: A reply to Ashcraft

In a review of the chronometric literature, M. Ashcraft (1982, Developmental Review, 2, 213–236) concludes that adults store each basic arithmetic fact in a table-like retrieval network. In my commentary (1983, Developmental Review, 3, 225–230), I argued that procedural knowledge (stored rules, principles, or heuristics) might be a cognitively more economical basis for generating many number combinations. In this paper, I draw an analogy between this alternative model of number fact representation and how computers efficiently reconstruct arithmetic combinations, note that the research findings do not clearly support any one model of mental arithmetic, and attempt to address Ashcraft's (1983, Developmental Review, 3, 231–235) criticisms of my model.     

Reading disability: A problem in rule learning and word decoding

Traditional explanations of reading disability (e.g., perceptual, memory, and phonetic receding deficits) have encountered logical difficulties and substantial empirical disconfirmation. An alternative conceptualization of the nature of reading disability is proposed. Disabled readers are hypothesized to suffer a fundamental problem in acquiring word knowledge and word processing skills. Poor decoding skills prevent them from developing sophisticated reading comprehension skills. From this perspective, the cognitive deficits of disabled readers result from failure to acquire and generalize complex processing skills originally mastered through reading experience. Recent research of the author and of others relating to these issues is discussed.     

Computing with connections in visual recognition of origami objects

This paper summarizes our initial foray in tackling Artificial Intelligence problems using a connectionist approach. The particular task chosen was the visual recognition of objects in the Origami world as defined by. The two major questions answered were how to construct a connectionist network to represent and recognize projected line drawings of Origami objects and what advantages such an approach would have. The structure of the resulting connectionist network can be described as a hierarchy of parameter or feature spaces with each node in each of the feature spaces representing a hypothesis about the possible existence of a specific geometric feature of an Origami object. The dynamic behavior of the network is a form of iterative refinement or relaxation whose major characteristic is to prefer more globally interesting interpretations of the input over locally pleasing ones. Examples from the implementation illustrate the system's ability to deal with forms of noise, occlusion and missing information. Other benefits are an inherently parallel approach to vision, limitation of explicit ordering of the search involved in matching model to instance and the elimination of backtracking due to the sharing of partial results as the search progresses. Extensions and problems are also discussed.     

Self-behavior focus of attention as a determinant of children's and adults' attributions to stories with negative outcomes

This study explored characteristics of attributions made to negative outcome stories by fourth-, sixth-, and eighth-graders as well as college students. All subjects read six stories representing three stories for each of two levels (self-focus and behavior-focus) of a within-subjects factor, Focus of Attention. Dependent measures included both spontaneous attributions and structured evaluations on the dimensions of causality, responsibility, blame, and deservingness. Analyses of the spontaneous attributions indicated that Self attributions were more frequently given than either Behavior or External attributions to both self- and behavior-focus stories. The experimental manipulation of internal focus produced matching attributions only in the self manipulation. Analyses of the structured evaluations indicated that subjects used Cause and Responsibility interchangeably but only eighth-graders and college students differentiated Cause/Responsibility from both Blame and Deservingness. Cause/Responsibility was also shown to have more salience in the behavior-than self-focus stories. It is suggested that a verbal focus on behavior has limited effects in producing defensive, self-distanced attributions but may heighten evaluations of Cause/Responsibility. In addition, behavior-focus seems to have little effect on the development of the psychologically more complex evaluations of blame and deservingness.