野性的抗争与奔放的激情——试论东北精神对白朗早期短篇小说创作的影响

白朗是上世纪三十年代东北作家群中成就较高的女作家.她的早期创作以反映伪满时期东北人民的痛苦生活和英勇抗争为主要题材,以野性的抗争和奔放的激情展现了东北文化强有力的生命意识和壮怀激烈的英雄主义情怀,体现着浓烈的东北文学创作的特质和意蕴.     

To Eat or Not to Eat: Implications of the Attentional Myopia Model for Restrained Eaters.

The attentional myopia model of behavioral control was tested in a study of food consumption by chronic dieters. According to the model, when individuals' attentional capacity is limited, their behavior will be disproportionately influenced by highly salient internal and external cues to the exclusion of more distal stimuli. In situations that normally feature conflicting behavioral pressures, such a state of narrowed attention is likely to result in abnormally disinhibited behavior when cues promoting action are more salient and to result in abnormally restrained behavior when inhibiting cues are more salient. In addition to supporting the predictions of the model, this study provided the first evidence for enhanced behavioral control under conditions of limited attention. Participants' responses to a thought-reporting measure also provided evidence for the role played by attentional myopia in the control of eating. Implications for a broad array of regulatory successes and failures are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

《世说新语》的编撰原因考辨

关于《世说新语》编撰的原因,学术界有不同的观点,一般认为《世说新语》的编撰是为了鼓吹名士风流,反对儒教。但联系刘义庆的思想、生活的时代,以及《世说新语》文本的分类、编排和内容等方面来考察,刘义庆编撰《世说新语》的真正原因,是为了倡导、宣传儒家思想。     

无约束物体动力学普适方程的变化导出

用张量形式通过变分原理导出了无约束物体的动力学普适方程。该方程简化后可得到刚体动力学方程和弹性变形体动力学方程。普适方程用于分析运动物体考虑其变形或由刚体和变形体组成的混合系统的动力学问题是方便的。     

Computational analysis of a sandwich shield with free boundary inserted fabric at high velocity impact

In this paper, a novel hybrid composite shield to protect space structures from hypervelocity impact of micrometeoroid and space debris is proposed. The finite-element model of the proposed shield was constructed and finite-element analysis was conducted to approximate the energy absorption rate. Before the final model analysis, analysis of each component including the aluminum plate (front plate), PMMA plate (rear plate), and intermediate layer of fabric was performed, verifying the finite-element model of each component. The material properties used in the analysis were predicted material property values for high strain rates. The analysis results showed that, other than the fabric, the energy absorption rate of each component was in agreement. Afterwards, the finite-element model of the hybrid composite shield was constructed, where it was analyzed for the constrained and unconstrained fabric boundary condition cases. Through the finite-element analysis, the fiber pullout mechanism was realized for the hybrid shield with free boundary inserted fabric, and it was observed that this mechanism led to energy absorption increase.     

Brain activation in restrained and unrestrained eaters: An fMRI study.

Restraint theory has been used to model the process that produces binge eating. However, there is no satisfactory explanation for the tendency of restrained eaters (REs) to engage in counterregulatory eating, an ostensible analogue of binge eating. Using functional magnetic resonance imaging (fMRI), the authors investigated brain activation of normal weight REs (N = 9) and unrestrained eaters (UREs; N = 10) when fasted and fed and viewing pictures of highly and moderately palatable foods and neutral objects. When fasted and viewing highly palatable foods, UREs showed widespread bilateral activation in areas associated with hunger and motivation, whereas REs showed activation only in the cerebellum, an area previously implicated in low-level processing of appetitive stimuli. When fed and viewing high palatability foods, UREs showed activation in areas related to satiation and memory, whereas REs showed activation in areas implicated in desire, expectation of reward, and goal-defined behavior. These findings parallel those from behavioral research. The authors propose that the counterintuitive findings from preload studies and the present study are due to the fact that REs are less hungry than UREs when fasted and find palatable food more appealing than UREs when fed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

无约束结构的弹性模态

本文应用Gram-Schmidt正交化方法,通过清型矩阵,构作一个缩聚变换,化半定系统的特征值问题为全定系统的特征值问题。方法简单明了,易于掌握。     

同位素稀释-气相色谱-串联质谱法快速测定糕点类食品中邻苯二甲酸酯

建立同位素稀释-气相色谱-串联质谱法快速测定糕点类食品中27 种邻苯二甲酸酯残留量的方法。样品经正己烷-乙酸乙酯（1∶1,V/V）超声提取、十八烷基硅烷键合硅胶（C18）净化后,经程序升温气化进样口不分流进样,利用气相色谱-串联质谱法在选择反应监测模式下进行检测,采用同位素内标法定量。结果表明：27 种邻苯二甲酸酯的线性范围除邻苯二甲酸二正辛酯、邻苯二甲酸二异壬酯、邻苯二甲酸二异癸酯和邻苯二甲酸二月桂酯为0.1～20 mg/L外,其余均为0.05～10 mg/L,相关系数（r）均大于0.99。方法检出限范围为0.000 1～0.009 8 mg/kg,方法定量限范围为0.000 5～0.032 6 mg/kg。在20 种不同糕点基质中3 个添加水平（0.1、0.2、2.0 mg/kg）的平均回收率为74.3%～117.5%,相对标准偏差为2.9%～13.5%。该方法前处理简单快速、灵敏度高、测定线性范围宽,适用于糕点类食品中邻苯二甲酸酯残留量的检测与确证。     

Eat, drink, and be merry, for tomorrow we diet: Effects of anticipated deprivation on food intake in restrained and unrestrained eaters.

This study examined the effect of anticipated food deprivation on intake in restrained and unrestrained eaters. Participants were randomly assigned to a diet condition, in which they expected to diet for a week, or to a control (no-diet) condition. Immediately after being assigned to a condition, participants completed a taste-rating task in which food consumption was measured. Restrained eaters in the diet condition consumed significantly more food than did restrained eaters in the no-diet condition or unrestrained eaters in either condition. Unrestrained eaters consumed the same amount regardless of condition. These results confirm that merely planning to go on a diet can trigger overeating in restrained eaters, reflecting the dynamic connection between dieting and overeating. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Frontal brain asymmetry in restrained eaters.

It is well known that the eating patterns that restrain chronic dieters (restrained eaters) can be disinhibited by anxiety, which in turn has been associated with relative right frontal brain activity in independent electroencephalographic (EEG) studies. Combining these two lines of evidence, the authors tested the hypothesis that chronic restrained eating is associated with relative right frontal asymmetry. Resting anterior brain asymmetry and self-reported measures of anxiety and depression were collected in 23 restrained and 32 unrestrained eaters. As hypothesized, groups differed in tonic frontal activity, with restrained eaters showing more relative right frontal activity. Furthermore, relative right frontal activity was associated with greater self-reported restraint. Right-sided prefrontal asymmetry may thus represent a diathesis associated with increased vulnerability toward restrained eating. (PsycINFO Database Record (c) 2010 APA, all rights reserved)