门脉高压症治疗观点之辩

对立统一规律是辩证法的实质,在唯物辩证法的理论体系中占有核心地位。门脉高压症的外科治疗有分流术与断流术两种不同的手术方法,这两种方法从治疗机制上看是矛盾的,用对立统一观来认识这两种手术的联系并揭示门脉高压外科治疗发展的哲学依据。     

"道物无际"--道教生态哲学纲要

道教生态哲学的基础围绕着道教的最高理念"道"及最基本范畴"物"生"神"而展开."道"作为道教信仰的终极理念,具有至高无上的地位,它与其它宗教或思想体系中的最高理念,如上帝、安那、梵(印度教吠檀多派)、绝对精神、自由意志等等范畴一样处于核心的地位,虽然这些范畴在解释一切精神和存在现象的作用上不尽相同.在道教哲学中,"道"是无所不覆、自生自化、永恒存在、派生万物的形而上的宇宙本体,是贯穿于整个自然界、人世间和神仙世界之中的最高理念.除了作为最高理念的"道"外,"物"生"和"神"也是道教生态哲学的最基本范畴."物"是对物质、万物、实物、器物、财物等具体事物的抽象,主要指有形的、变化的、局部的、杂多的现象存在."生"是对生命、身体、人生、生物、生物圈、生态环境的抽象,也包括事物的有机活动和转化的功能,如事物的生成、生长和生化."神"是对精神、神仙、神明的抽象,它是对"物"和"生"的提升、超越.道教将"道"贯穿于"物"生"神"三界,具体演化为自然界(物)、人世间(生)和神仙界(神),或物质世界、生命世界和神仙世界."物"生"神"的相互关系及其与"道"的关系构成了道教生态哲学的基础.     

Nicotinic cholinergic synaptic mechanisms in the ventral tegmental area contribute to nicotine addiction

Tobacco use is a major health problem that is estimated to cause 4 million deaths a year worldwide. Nicotine is the main addictive component of tobacco. It acts as an agonist to activate and desensitize nicotinic acetylcholine receptors (nAChRs). A component of nicotine's addictive power is attributable to actions on the mesolimbic dopaminergic system, which serves a fundamental role in the acquisition of behaviors that are inappropriately reinforced by addictive drugs. Here we show that nicotine, in the same concentration and time ranges as obtained from tobacco, has three main actions that regulate the activity of midbrain dopamine (DA) neurons. Nicotine first activates and then desensitizes nAChRs on the DA neurons. This process directly excites the DA neurons for a short period of time before the nAChRs desensitize. Nicotine also enhances glutamatergic excitation and decreases GABAergic inhibition onto DA neurons. These events increase the probability for synaptic plasticity, such as long-term potentiation. The short-lived direct excitation of the DA neurons coupled with the enhanced glutamatergic afferent activity provides the presynaptic and postsynaptic coincidence necessary to initiate synaptic potentiation. In total, these synaptic events lead to a relatively long-lasting heightened activity of midbrain DA neurons. Consistent with other summarized studies, this work indicates that the synaptic changes normally associated with learning and memory can be influenced and commandeered during the nicotine addiction process.     

Oculomanual Coordination in Tracking of Pseudorandom Target Motion Stimuli

Oculomanual coordination was investigated in 9 healthy subjects during tracking of pseudorandom motion stimuli. Each subject was required to track visual stimuli under eye-hand (EH) and eye-alone (EA) conditions. Subjects were exposed to 3 types of mixed sinusoidal stimulus with varying frequency or amplitude of the highest frequency component, or various degrees of irregularity. Progressive degradation in tracking performance was nonlinearly induced by an increase in either (a) the highest frequency component or (b) its amplitude, but not by stimulus irregularity. No significant difference was found in eye velocity gain and phase under the EH and EA conditions. Eye and hand responses were found to be highly correlated in gain and phase when compared across frequencies and motion stimuli. The results suggest that frequency and amplitude are dominant factors controlling the breakdown of oculomanual performance in response to pseudorandom stimuli. Frequency responses of smooth pursuit eye movements are not affected by the hand motion in pursuit of unpredictable stimuli. Eye and hand motor systems appear to share common nonlinear drive mechanisms when pursuing pseudorandom target motion stimuli.     

不确定性风险选择的抱负水平—相对效用整合理论

本文认为不确定性风险决策备择方案的选择标准既不是规范效用理论所主张的效用最大化,也不只是研究者们基于西蒙有限理性决策理论而提出的抱负水平,而是存在于决策不同阶段上的、由启发式策略控制着的这两种标准的整合,我们称之为抱负水平－相对效用整合标准。为此,我们在研究抱负水平结构的基础上提出了负险选择的抱负水平－相对效用整合理论及其支持性研究证据,并就有关问题进行了讨论与思考。指出抱负水平－相对效用整合是风     

Emotional labour strategies and job burnout: A meta-analysis of Chinese employees

Emotional labour strategies have a significant impact on job burnout. However, current research results are controversial and unclear. A meta-analysis was conducted to explore the relationship between emotional labour strategies (surface acting and deep acting) and job burnout. A total of 84 empirical studies that included 28,242 participants were selected. The meta-analysis of the relationships between job burnout and surface acting and deep acting included 84 and 75 independent samples respectively. The results show that surface acting had a positive association (r = 0.25) with job burnout, whereas deep acting (r = −0.27) had a negative association with job burnout. Occupational types and measures of emotional labour strategies moderated the relationship between emotional labour strategies and job burnout, but this relationship was not moderated by measures of job burnout.     

时间透视的自我整合:I.心理结构方式的投射测验

用画圆测验和完成句子测验,配合时间标定作业,对２０１名大学生被试的时间透视特点作了探讨,结果发现,在时间透视的广度、方向及关联性等方面,高自我认同组被试有着更大的现有广度,更积极而远景开放的未来取向,以及更强的时间整合;低自我认同组则是过去广度更大,其时间分裂及未来中断的现象理易发生。这些结果初步揭示了建立在时间体验与自我概念的整合基础上的时间透视的心理结构方式。     

时间透视的自我整合:Ⅱ.心理功能机制的实验研究

以２４个人格形容词为材料,对１１１名大学生被试进行了“过去的我”、“现在的我”和“将来的我”三择一式的迫选反应实验,再配合时间标定作业。结果不仅验证了前文的研究结论,即不同同一性状态的被试在时间透视的广度、方向及关联性等心理结构特征上存在差异,而已表明了整合自我信息的不同的功能机制。不过,这种差异主要体现在积极词上,在消极词上差异不显著。     

How does green advertising skepticism on social media affect consumer intention to purchase green products?

Underpinned by the stimulus–organism–response model, this study explores the underlying mechanism through which green advertising skepticism on social media affects consumer green purchase intention. It also investigates the boundary factors that moderate this indirect relationship. Performing structural equation modeling on data collected from an online survey on Sina Weibo, this study finds that green advertising skepticism on social media negatively affects green purchase intention through the mediation of perceived information utility. Moreover, interdependent self‐construal positively moderates, and independent self‐construal negatively moderates this indirect relationship. These findings suggest that truthful and consumer‐tailored green advertising is crucial to green product marketing.