纽约的折扣店狂热

纽约城里“淘宝”的折扣店本来不少,糟糕的经济倒成了它们的“强心剂”。好吧,现在你准备竭尽全力过吝啬的日子。你用自来水稀释了常喝的瓶装水;你不用优质的电线,宁可日子过得像皮影戏;以前吃煮硬的鸡蛋,现在把它煮软一点,节省五分钟的煤气费;为了不花车票钱,你把工作都给辞了;最后,你把孩子都给卖了。     

遗传标记给5种精神疾病的诊断标准带来挑战

被称为精神病学圣经的《神经疾病诊断和统计手册》（Diagnostic and Statisiical Manual of Mental Disorders）已更新至第五版，以下简称DSM-5，并于2013年5月22日开售。记。     

Optimal dividend strategies in a double compound poisson risk process

In this paper, we consider a double compound Poisson risk model involving two independent classes ofinsurance risks with a threshold dividend strategy. We derived the integro-differential equations (IDE) with certain boundary conditions for the present value of dividends until ruin. When the claims from both classes are exponentially distributed, we show that the threshold dividend strategy is an optimal dividend strategy.     

夫妻吵架的十个“雷区”

两性之间能传递出迷人的韵律．但最微小的问题可能暗中破坏了两人的感情：地板上乱扔的脏袜子，吃饭时大声吧唧嘴……就像坏了的水龙头漏出的水滴。它们侵蚀了二人世界中的美好，亲密关系只能是苍白的记忆。     

基于相变操控的电润湿显示油墨填充与封装工艺研究

彩色油墨的填充与封装工艺是电润湿显示制造技术的核心，如何提高填充均匀性和制程效率仍然是电润湿显示技术量产的关键挑战之一。本文提出一种基于相变操控的电润湿显示油墨创新填充和封装方法，即在空气环境中完成油墨液相填充，经低温凝固后投入液体环境完成封装。该方法有效规避了在传统液下环境中填充涉及的油/水/固三相界面操控的复杂性，提高了填充工艺的兼容性和稳定性。对油墨厚度的分析结果表明，基于相变操控填充油墨厚度与像素墙高度的相关性更好，较传统自组装填充具有更好的膜厚控制性。相变操控填充电润湿显示器件的光电响应处于合理水平。本研究有效解决了电润湿显示油墨填充的技术瓶颈，对推进电润湿显示技术的应用具有重要意义。     

GIS安装检修用滑动式龙门行车的研究与设计

GIS安装检修用滑动式龙门行丰是一种适用于变电站GIS室内现扬GIS安装．检修等施工时进行吊拉等作业。本文介绍了GIS安装尊侈旦滑动式龙门行丰的应用前景，结构特点和谩计过程，最后总结了它的创薪之处。     

Effects of elevation on litter-size variation among lizard populations in the Sceloporus grammicus complex (Phrynosomatidae) in Mexico

We examined the effect of elevation on litter-size variation in viviparous lizards of the Sceloporus grammicus complex in 10 states of Mexico. Female snout–vent length (SVL) decreased with increasing elevation, and absolute litter size based on embryos also tended to de crease with increasing elevation. However, after controlling for variation in female body size, we found that litter sizes tended to be relatively larger at higher elevation. Elevation therefore appears to influence litter size in these lizards; however, relatively little of the variation is explained by elevation; thus, other factors are likely making substantial contributions to the observed litter-size variation. The S. grammicus complex appears to be a good model system for examining the underlying causes of geographic and elevational variation in lizard life histories. Examinamos el efecto del altitud en la variación del tamaño de camada de las lagartijas vivíparas del complejo Sceloporus grammicus en 10 estados de México. La LHC de las hembras disminuyó con la altitud, y el tamaño absoluto de camada, calculado con base en el número de embriones, también tendió a disminuir. No obstante, después de controlar la variación en el tamaño corporal de las hembras, encontramos que los tamaños de camada tendieron a ser relativamente más grandes en altitudes mayores. La altitud, por tanto, parece influir en el tamaño de camada de estas lagartijas; sin embargo, la altitud explica relativamente poco de la variación, por lo que, es probable que otros factores contribuyan substancialmente a la variación observada en el tamaño de camada. El complejo S. grammicus parece ser un buen sistema para estudiar las causas fundamentales de la variación geográfica y altitudinal en la historia de vida de las lagartijas.     

Sperm viability in the reproductive tract of females in a population of Sceloporus mucronatus exhibiting asynchronous reproduction

Asynchronous reproduction is a common phenomenon in high-elevation populations of lizards from Central México. Sperm storage in the reproductive tract of females is the mechanism for making oocyte fertilization possible. Our study addresses questions related to functional oviductal sperm storage of females mating on different dates throughout the reproductive season. A population of Sceloporus mucronatus with copulation in the summer and ovulation in the fall was chosen for this experiment. Eleven females that copulated in the field during June and 13 females that copulated in captivity during August were maintained in the laboratory until parturition. The number of pregnant females and the litter sizes produced in each experimental group were indicative of the viability of the stored sperm. Sperm stored in the reproductive tract of females were able to fertilize eggs after 4 months. No significant differences were found in the number of pregnant females between the 2 experimental groups nor in the litter sizes that they produced. We found that the amount of time sperm were held in the female reproductive tract (ca. 3 months) had no effect on the capacity of sperm to fertilize eggs. Histological examination of 8 oviducts collected before the mating season eliminated the possibility of sperm storage from one year to the next. In this system, sperm retention could have evolved as a response mechanism to deal with the asynchrony between sexes in the reproductive cycles. However, we cannot rule out alternative hypotheses.     

Attributes associated with probability of infestation by the pi?on ips, Ips confusus (Coleoptera: Scolytidae), in pi?on pine, Pinus edulis

We examined attributes of pi?on pine ( Pinus edulis ) associated with the probability of infestation by pi?on ips ( Ips confuses ) in an outbreak in the Coconino National Forest, Arizona. We used data collected from 87 plots, 59 infested and 28 uninfested, and a logistic regression approach to estimate the probability of infestation based on plot and tree-level attributes. Pi?on pine stand density index was a good predictor of the likelihood of infestation by pi?on ips at the plot level, and a cross-validation analysis confirmed that the model correctly classified 82% of the cases. Diameter at root collar and pi?on dwarf mistletoe infestation level were good predictors of individual tree infestation, and a cross-validation analysis indicated that the model correctly classified 72% of the cases. Results suggest that the occurrence of pi?on ips infestations may be related to stress factors associated with increased stocking and pi?on dwarf mistletoe infestations.     

农村开展篮球运动浅析

在我国新农村建设中体育文化起着关键性作用,是农村建设中必不可少的一项重要工程。根据现阶段我们农村的发展情况来看,要有针对性的进行发展来提高农村建设,通过调查显示篮球在农村发展很广泛。本文通过文献法和实际考察法,对农村篮球的发展做可行性分析,并实施对策研究分析,使篮球这项运动在农村得到进一步的发展。