Comparison of the trunk-pelvis and lower extremities sagittal plane inter-segmental coordination and variability during walking in persons with and without chronic low back pain

Inter-segmental coordination can be influenced by chronic low back pain (CLBP). The sagittal plane lower extremities inter-segmental coordination pattern and variability, in conjunction with the pelvis and trunk, were assessed in subjects with and without non-specific CLBP during free-speed walking. Kinematic data were collected from 10 non-specific CLBP and 10 non-CLBP control volunteers while the subjects were walking at their preferred speed. Sagittal plane time-normalized segmental angles and velocities were used to calculate continuous relative phase for each data point. Mean absolute relative phase (MARP) and deviation phase (DP) were derived to quantify the trunk-pelvis and bilateral pelvis-thigh, thigh-shank and shank-foot coordination pattern and variability over the stance and swing phases of gait. Mann-Whitney U test was employed to compare the means of DP and MARP values between two groups (same side comparison). Statistical analysis revealed more in-phase/less variable trunk-pelvis coordination in the CLBP group (P < 0.05). CLBP group demonstrated less variable right or left pelvis-thigh coordination pattern (P < 0.05). Moreover, the left thigh-shank and left shank-foot MARP values in the CLBP group, were more in-phase than left MARP values in the non-CLBP control group during the swing phase (P < 0.05). In conclusion, the sagittal plane lower extremities, pelvis and trunk coordination pattern and variability could be generally affected by CLBP during walking. These changes can be possible compensatory strategies of the motor control system which can be considered in the CLBP subjects.     

Strong interactions between hydrogen in solid solution and stress-induced martensite transformation of Ni–Ti superelastic alloy

The role of the dynamic interactions between hydrogen in a solid solution and the stress-induced martensite transformation in hydrogen embrittlement has been investigated using trained Ni–Ti superelastic alloy. In a cyclic tensile test in the stress plateau region caused by stress-induced martensite and reverse transformations after hydrogen charging, a further decrease in the critical stress for the martensite transformation is observed. In addition, the number of cycles to fracture for a trained specimen is significantly larger than that for a non-trained specimen. Since most of the charged hydrogen is preferentially trapped in defects induced by training, the hydrogen embrittlement is considerably suppressed as a result of decreasing interactions between the hydrogen and the transformation. The present results indicate that hydrogen in a solid solution more strongly interacts with the stress-induced martensite transformation than hydrogen trapped in defects, thereby further enhancing the hydrogen embrittlement related to phase transformations.     

当代中国医患关系的合理重构--论我国社会转型期医患利益的调节与平衡

我国社会转型,为当代中国医患关系的合理重构提供了平台,但社会转型期中出现的诸多医患利益冲突也向人们提出了严峻的挑战,亟需对其加以调节和平衡.这种调节与平衡,不能完全甚至不能主要地交由市场这双"看不见的手"去运作,不能完全任凭甚至不能主要地任凭医患双方自由地去博弈;政府必须明确并履行自己的职责,为正确调节与平衡我国社会转型期的医患利益创立一个全方位的合理的框架,使医患之间在有控制的理性的双赢的利益博弈中合理地重构当代中国医患关系的基本格局.     

Hand dominance influences the processing of observed bodies

In motor tasks, subgroups of lefthanders have been shown to differ in the distribution of attention about their own bodies. The present experiment examined whether similar attentional biases also apply when processing observed bodies. Sixteen right handers (RHs), 22 consistent left handers (CLHs) and 11 relatively ambidextrous inconsistent left handers (ILHs) performed an own body transformation task in which they were instructed to make speeded left–right judgements about a schematic human figure. Attentional biases associated with handedness were found to extend to observed bodies: CLHs’ judgements were faster to the figure’s left side, while ILHs, like RHs, showed facilitated performance to the figure’s right side. These results demonstrate a novel embodiment effect whereby the processing of a static schematic human figure is modulated by an individual’s personal motor capabilities. This finding suggests that motor simulation may contribute to whole body perception in the absence of actual or implied actions.     

自我中心视角转换——基于自身的心理空间转换

自我中心视角转换是通过调整自我中心参考系以认知外界物体的心理过程,是相对于基于物体空间转换的另一种心理空间转换方式。行为数据显示自我中心视角转换存在观察者优势,脑成像结果也表明这类转换与基于物体空间转换存在脑区上的分离,这些结论都支持了多系统模型,说明自我中心视角转换是一种拥有独立脑机制的心理转换方式。自我中心视角转换的研究有其独特的理论和现实意义。     

组织中员工的自愿性工作行为

自愿性工作行为是角色规范之外的自发性行为, 它包括两大类型：一是以组织公民行为、建言行为、周边绩效等为代表的角色外行为; 二是以反生产行为、沉默行为、越轨行为等为代表的负面组织行为。自愿性工作行为的产生是个体与情境相互作用的结果。“组织公民行为-反生产行为”与“建言-沉默”之间的关系并非对立相反, 在一定条件下且可以互相转化, 本研究将特定类目的转化过程推论至总体, 并用情感事件理论、道德补偿原理及经济理性分析对该推论进行理论论证。     

女性生理周期与修饰行为的关系

众所周知, 与男性相比, 女性偏爱修饰。通过修饰行为, 提升自身吸引力具有普遍的社会意义。近年来, 一些研究者将女性修饰行为与繁殖目的联系起来, 认为女性修饰行为受到生理周期(主要是排卵期和安全期)的影响。具体而言, 排卵期时, 女性的修饰行为会增强, 缘于同性竞争, 包括竞争资源及配偶; 黄体期时, 启动异性吸引动机也会显著增强女性的修饰动机, 目的可能是保持“异性”对自己及后代的持续“投资”。总之, 上述观点为女性持续存在的、对修饰行为的关注提供了生物学解释。     

Fundamentalism and the masculine body: The case of Jewish Ultra-Orthodox men in Israel

The predominant model in the literature on fundamentalism focuses on the tense relationship between contemporary radical religious movements and their environment. The characteristic violence that has made fundamentalism notorious is conventionally explained in terms of defensive or offensive reactions to the challenge of the modern secular society. In light of recent developments in the fundamentalist world, we propose to employ a novel analytic framework to update and revise the current conceptualization. Our argumentation is based on extensive fieldwork in a particular case of Jewish fundamentalism. We introduce into the agenda of fundamentalism research a category conspicuously absent thus far: the body. Results of ethnographic study of Ultra-Orthodoxy in Israel throw light on the very existence of fundamentalist body, and emphasize its implications for better understanding the fundamentalist predicament. The body poses a major problem to fundamentalists and plays a key role in their typical behavior and particularly in their violence. Discussing fundamentalism in terms of the body allows us to see its militancy as a solution to intra-fundamentalist problems that emerge in advanced stages of the movements' life, on the one hand, and paradoxically as a means towards reconciliation with the movements' environment normally regarded as its enemy, on the other hand. In the case presented here the fundamentalist violence is manifested in various hitherto unexplored ways including an enthusiastic service in the military of the nation-state. Such peculiar violence indicates present-day fundamentalist experimentation in an attempt to establish new possibilities of coming to terms with ever changing social and political reality, while at the same time to pursue revolutionary options of radical religious experience.     

Prayer as Therapeutic Process Toward Aliveness Within a Spiritual Direction Relationship

This article underscores the potential benefit of a specific form of Christian prayer that creates space within a spiritual direction relationship for the creation of inner images that reveal a person’s unconscious relational longings and co-created representations of God. In this specific type of prayer that can be facilitated by mental health professionals and pastoral counselors, imagery of God’s presence is created in the space between a Christian spiritual director and a Christian directee while they are open to inner experiences that reveal God’s presence interacting with infantile processes toward aliveness. Aliveness is understood using Winnicottian notions in dialog with theories proposed by Allan N. Schore, affective neuropsychologist and Clinical Faculty at UCLA David Geffen School of Medicine, Ann Belford Ulanov, Jungian Analyst and Professor of Psychiatry and Religion at Union Theological Seminary and W.R.D., British psychoanalyst in the Objects Relations School. Ideas of transitional space, good enough mother, holding environment, aggression, creativity, and play are set alongside theories of affect regulation, the developing brain, co-created objective God images, the relational nature of God and being received as good while illuminating three prayer experiences during one 30-year-old Asian American woman’s 16-month therapeutic process toward aliveness.