可拓逻辑研究展望

可拓学是由我国学者自主创立的一门新学科,它研究以形式化的模型分析事物拓展的可能性和开拓创新的规律,形成解决矛盾问题的方法。中国科学院权威杂志《科学通报》在评论文章中指出:“可拓学是一门充满生命力的新学科,它的创立是中国人的骄傲,它不仅属于中国,更属于世界。”[1]经过30年的不断开拓,可拓学已经发展成为一门横跨哲学、数学与工程学的交叉学科,我们哲学界也可以积极对相关问题进行科学的研究和探索。本文拟从逻辑的角度谈谈可拓逻辑的研究设想,以期能够引起哲学界、逻辑学界对可拓学研究的关注。一可拓逻辑的研究价值人类的历史…     

学习成绩差与成绩好学生短时记忆特点的比较研究

本研究比较了小学１、３、５年级学习成绩好／差学生在图片、数字、词汇记忆上的特点。结果表明：（１）在图片记忆上,两组儿童的成绩没有差异。１、３年级优差生间的差异主要在数字与具体词汇记忆中;５年级两组学生的差异主要在数字与抽象词汇记忆中。（２）从提示／非提示及击中虚假刺激的结果看,两组儿童在记忆上的差异部分地是由于策略运用上的差异。经过提示,学习不良儿童在数字和词汇记忆上的成绩有了提高。     

医学本科生学习成绩与A型行为关系

本文以A型行为问卷对70名医学系和法医学系学生的学习成绩作了对照性测试研究。结果显示:学习成绩与A型行为有关。学习成绩优秀生大部分属于A型行为类型,与学习成绩差生比较具有显著性差异(P<0.01)。在行为因子中,时问紧迫感强是奖学金获得者们最为突出的特征。     

知识教学中认知策略与原有知识间关系的实验研究

模拟课堂教学情境,探讨知识教学中学习者的认知策略与原有知识间的相互关系。研究表明,二者存在明显的相互作用,策略学习只有在学习者具备适当原有知识的基础上才能有效地促进学习;当原有知识缺乏时,策略教学对学习成绩没有显著性影响;原有知识水平的高低可直接影响学生的学习成绩。该结论对于实际教学工作具有一定的指导意义。     

学校环境对初中生人格特征与创造性科学问题提出能力关系的影响

采用问卷法,对33所学校初二年级的1228名学生进行了测试,并使用多水平分析技术探讨了学校环境对青少年人格特征和创造性科学问题提出能力关系的影响。结果显示:(1)不同学校学生的创造性科学问题提出能力有显著性差异;(2)开放性对学生的创造性科学问题提出能力有显著的正向预测作用;(3)外向性、开放性、尽责性对创造性科学问题提出能力的影响存在不同学校间的差异;(4)学校环境中,良好的师生关系可以显著增强开放性和创造性科学问题提出能力的正向联系。     

不同喉罩对右颈内静脉穿刺点的影响

观察三种常用喉罩置入后对右颈内静脉解剖位置及其本身的影响,选择最佳的穿刺位置.90例患者随机分为:Proseal组(P组,n=30)和Supreme组(S组,n=30)和SLIPA组(A组,n=30),使用多普勒超声在低位(锁骨上窝2cm水平)、中位(胸锁乳突肌三角顶点水平)及高位(胸锁乳突肌前缘中点),观察喉罩置入前后颈内静脉前后直径、横截面积、同颈总动脉间距离及二者重叠率的变化.结果在低位穿刺点三组喉罩置入前后各指标组内及组间比较均无显著性意义(P＞0.01);在中位穿刺点喉罩置入前后A组各指标差异组内比较无显著性意义(P＞0.01),S组和P组患者的各指标差异组内及组间比较均有显著性意义(P＜0.01);在高位穿刺点三组患者喉罩置入前后各指标差异组内比较有显著性意义(P＜0.01).使用三种喉罩时,对低位右颈内静脉解剖特点及位置无影响,可作为使用喉罩时右颈内静脉穿刺首选解剖位置.     

中学生学习策略发展研究

采用调查问卷法,以自编的《中学生学习方式量表》对初一至高三800名学生进行了调查。结果发现：初中生对学习策略的掌握和运用水平尚不稳定,初三学生的学习策略水平出现明显的下降趋势,高中生对学习策略的掌握运用达到自控水平;初中、高中男、女生间学习策略水平存在显著差异,女生学习策略整体水平显著高于男生,随年级的提高,部分学习策略水平的性别差异有逐渐缩小的趋势;学习成绩与学习策略存在显著正相关。     

中学生问题解决策略的基本特征研究

实验通过人—机界面,对中学生解决几何问题策略的基本特征进行探讨。对学习成绩优、差学生,在解决问题的程序上和解决问题结果的正确与错误上的差异比较后显示：学习成绩优、差学生在解决问题的程序上,尤其在问题解决的思考推理方向上没有类似专家和新手之间的显著差异;学习成绩的优、差对解决问题结果的正确与错误上具有直接的影响;问题解决规则的选择对问题解决过程具有间接影响;对问题解决规则的掌握对问题解决的结果具有重要影响。     

双耳分听和补笔对立即回忆延迟回忆影响的实验研究

通过两个实验探讨集中注意和补笔练习对立即回忆、延迟回忆的影响。实验一以英语单词为学习材料,使用组间设计方法,实验组采用附加追随程序和补笔练习;控制组为自定学习方式。学习结果表明：在自由回忆英文单词、听写英文单词和中译英三个方面,实验组的学习成绩明显高于控制组;实验组的学习方式更有利于低分组学生的学习。实验二的学习方式与实验一相同,通过４次测试的回归分析发现,实验组的学习发展水平明显高于控制组。     

小学生的品德不良行为及其心理与行为适应问题研究

运用测量法和问卷法,以某市357名小学生为对象,探讨了小学生的品德不良行为及其心理问题与行为适应性问题,并揭示了它们之间相互的关系。结果发现:小学生的品行不良、心理健康问题和行为适应问题都存在显著的年级差异,并受学习成绩的显著影响:成绩差的学生在这些问题上最严重;且品行不良和学习问题存在显著的性别差异;小学生的品德不良水平与许多心理问题之间存在显著相关;五年级是一个转折点:在品德不良行为和许多心理问题中都是高峰,随后开始下降。     

Conditional reasoning and the competence-performance issue: A developmental analysis of a training task

Empirical investigations of conditional reasoning have generally found that both children and young adults perform poorly on tasks that require the selection or evaluation of those propositions that test the truth status of conditional statements (if p then q). Earlier work (D. O'Brien & W. F. Overton, Journal of Experimental Child Psychology 1980, 30, 44–60) suggested that poor performances with these tasks by young adults show improvement following the introduction of evidence that contradicts earlier faulty inferences, and this improvement generalizes to other conditional reasoning tasks. The effects of the contradiction training were not found with younger subjects. The present research is an extension of the contradiction training paradigm. Ten-, fourteen-, and eighteen-year-olds were tested to assess developmental differences in improvement with an evaluation and a conditional syllogism task. Significant improvement in performance was found for the twelfth grade students following the contradiction training, and this generalized across tasks. This effect was not found for the two younger groups. The usual poor performance of the oldest group is considered to be a false negative assessment of their conditional reasoning competency. Further, it is suggested that several correct performances of younger reasoners are false positive assessments of their conditional reasoning competency.     

Self-deception and belief attribution

One of the most common views about self-deception ascribes contradictory beliefs to the self-deceiver. In this paper it is argued that this view (the contradiction strategy) is inconsistent with plausible common-sense principles of belief attribution. Other dubious assumptions made by contradiction strategists are also examined. It is concluded that the contradiction strategy is an inadequate account of self-deception. Two other well-known views — those of Robert Audi and Alfred Mele — are investigated and found wanting. A new theory of self-deception relying on an extension of Mark Johnston's subintentional mental tropisms is proposed and defended.     

Differences in timing and magnitude of lumbopelvic rotation during active and passive knee extension in sitting position in people with and without low back pain: A cross-sectional study

Repetitive lumbopelvic rotation (LPR) during active limb movements has been indicated as a factor that contributes to low back pain (LBP). Prior studies suggest that people with LBP demonstrate greater and earlier LPR during limb movements in prone.We examined timing and magnitude of LPR during sitting active knee extension in people with and without LBP. We also investigated differences of LPR during active and passive knee extension in LBP group. 38 men (mean age: 38.4)10.6) years) with chronic mechanical LBP and 38 matched healthy men (mean age: 36.6(8.4) years) were examined. Kinematic data were collected by motion capture system and analyzed using OpenSim software. The difference between the start time of knee extension and start time of LPR was calculated and was normalized to knee extension movement time. Maximum angular displacement for LPR was also calculated across time.People with LBP demonstrated earlier LPR during knee extension than healthy subjects (P < 0.01). There was, however, no difference in maximum LPR between groups. LBP group also demonstrated greater and earlier LPR during active than during passive knee extension (P < 0.01).Earlier LPR during limb movements in sitting may be related to LBP. Quadriceps muscle activity and inefficient trunk muscles activation may contribute to early LPR in LBP group. A greater understanding of the factors that may contribute to early LPR during daily activities can provide information to guide rehabilitation treatment for people with LBP.     

Reaction and movement times in men of different ages: a population study

Tests of psychomotor and motor speed at different levels of complexity were studied in random samples of men aged 31 to 35, 51 to 55, and 71 to 75 yr. The study was performed as a part of a larger research project on health and functional aging. Analyses indicated significantly slower responses among older men at all levels of test complexity (maximal knee extension velocity, tapping rate, simple and choice reaction and movement times). There were marked differences both between the youngest and the middle-aged groups and between the middle-aged and the oldest groups. Within the age groups high psychomotor and motor speed were associated with a favourable functioning of certain senses (vibration sensitivity and postural balance), with a high isometric muscular force, and with a high directly assessed aerobic capacity. The most important covariants of the speed functions within the age groups were, however, cognitive performance, length of education, and perceived health.     

当前实施麻醉过程中遇到的困惑及解决办法

当前麻醉应用过程中存在困惑,表现为：麻醉知情告知与患者接受存在矛盾;麻醉应用费用支出与患者经济节约构成冲突;麻醉风险意外出现与患者期待绝对安全冲突;麻醉要求与外科医生要求冲突。当前麻醉应用困惑的解决在于将告知沟通贯穿治疗全程,体现人文关怀;提高麻醉质量,提高麻醉安全系数;加强麻醉医生与外科医生沟通配合,共同提高手术效果...     

一个用于表达因果关系的ATL的扩展

CTL模型检测技术已被广泛应用于形式验证领域。交互时态逻辑（ATL）是对CTL的一个扩展,用于表达多主体博弈结构上的性质。ATL使用合作算子来表达多个主体能够通过合作保证系统的设计目标。在实际应用中,我们需要知道主体的行动与系统的输出状态之间具有因果关系。在本文中,我们通过引入新的模态算子扩展ATL,使得这种因果关系得到表达。我们使用两种方式的扩展。其中之一是从主体的能力出发,直观上,如果一些主体可以通过合作的行动来保证系统进入某个状态,同时,这些主体也可以通过合作的行动保证系统不进入这个状态,则这些主体的行动与该系统状态间具有更强的因果关系。我们使用的另一种方式是从系统状态出发。我们考虑要想使系统进入某状态,哪些主体的行动的必不可少的,哪些主体的行动是充分的但非必要的条件。在本文中,我们扩展后的逻辑CATL和SATL表达力强于ATL,但计算复杂性与ATL相同。     

The Effects of Computer Monitoring,Standards, and Rewards on Work Performance,Job Satisfaction,and Stress1

The effects of automated computer monitoring under different conditions of performance standards and reward were examined in two studies conducted in a simulated organization. In the first study, 37 computer operators were divided into six groups who worked for a 2-week period under different levels of performance standards. Individual keystrokes per hour and productive time was monitored by the computers for all of the groups (one group was a control group which was monitored but was unaware of the monitoring). Four of the six groups were assigned work standards, and performance against standards was also monitored for these four groups. Feedback reports on the monitored performance were available on demand at the individual consoles for those groups which were informed of the monitoring. The results showed that computer monitoring and feedback led to increased key rate compared to the control group which was not aware of monitoring. There was little effect of monitoring on work quality, satisfaction, and stress. In the second study, 24 operators worked for a 9-week period under various performance standards and rewards. Individual keystrokes per hour, productive time, and performance against standards were monitored by the computers for all workers. Feedback reports on performance against standards and rewards earned were available on demand at the individual consoles. The results revealed that the feedback from different combinations of standards and rewards had varying effects on performance, satisfaction, and stress. These effects, and the results from the first study, are discussed in terms of goal setting and expectancy theory.     

Critical Encounters with Rabbinic Doctrines of Creation: The Teacher as Source of Authority or as Partner in Dialogue

This is a case study based upon my experience of teaching an introduction to rabbinic thought to a group of Orthodox Jewish students. The study of one particular midrashic pericope allowed for major tensions between academic and religious approaches to the text to surface. The tension revolved around the apparent contradiction between the rabbinic mythical perception of creation as proceeding from primary negative matter and later philosophical belief in creatio ex nihilo. This contradiction touches upon issues of authority and of interpretation. The article explores various strategies dealing with issues of authority in general and of the meaning of the individual text in particular. Following a presentation of these strategies I offer my reflections upon my role as a teacher in this context. Dialogue emerges as an important element in the teaching process, creating a common ground between teachers and students and making them partners in a common quest for the truth of the text. Traditional dialogical modes of Jewish learning serve as the basis for the introduction of the academic agenda. This agenda is introduced as an extension of classical religious concerns rather than as an alternative to them.     

Fearlessness and courage: A replication experiment

An attempt was made to replicate the finding that decorated bomb-disposal operators show lower cardiac activity under stress than do comparable but non-decorated operators. The performance under stress of three groups of soldiers (decorated operators, non-decorated operators, less experienced soldiers) was assessed by behavioural, psychophysiological, and subjective measures. The original result, showing lower cardiac activity under stress among decorated operators, was reproduced. With minor exceptions, no group differences in behavioural performance or in subjective activity were found. The results strengthen the view that it is possible to identify physiological indices of fearlessness.     

Independent propositional modal logics

We show that the join of two classical [respectively, regular, normal] modal logics employing distinct modal operators is a conservative extension of each of them.This work was supported by the National Research Council of Canada and by the Polish Academy of Sciences.