墨比尔斯投资法则(五)——通往海外投资的致富之道

目前为富兰克林基金公司新兴市场最重要操盘人,素有新兴市场教父之称的马克·墨比尔斯(MarkMobius),曾经荣获美国杂志评选的"全球十大投资大师"之一,并于1997年、1998年连续被路透社选为"年度最佳全球基金经理人".他所推出的著作<获利护照--通往海外投资致富之道>提出多项投资法则,值得投资人参考.法则共有三十多条,我们对其进行精选,并连续刊登,为你揭开墨比尔斯投资法则的神秘面纱.     

The neuropharmacology of aggression: A critical review.

A review of the literature on aggression from a multidisciplinary standpoint reveals evidence for differentiating several kinds of aggression. This differentiation can be seen in the psychopharmacological literature, where some compounds have been effective in altering some forms of aggressive behaviors but ineffective in altering others. Differences in endogenous levels of neurotransmitters have also been reported, but there was little correlation between changes in neurotransmitter systems and effectiveness of compounds supposedly altering these systems. A tentative hypothesis is offered which attempts to explain the behavioral effects of these drugs in terms of their action on several neurotransmitter systems. (4 p ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Climate Change and Resource Management in the Columbia River Basin

Abstract

Scenarios of global climate change were examined to see what impacts they might have on transboundary water management in the Columbia River basin. Scenario changes in natural streamflow were estimated using a basin hydrology model. These scenarios tended to show earlier seasonal peaks, with possible reductions in total annual flow and lower minimum flows. Impacts and adaptation responses to the natural streamflow scenarios were determined through two exercises: (a) estimations of system reliability using a reservoir model with performance measures and (b) interviews with water managers and other stakeholders in the Canadian portion of the basin. Results from the two exercises were similar, suggesting a tendency towards reduced reliability to meet objectives for power production, fisheries, and agriculture. Reliability to meet flood control objectives would be relatively unchanged in some scenarios but reduced in others. This exercise suggests that despite the high level of development and management in the Columbia, vulnerabilities would still exist, and impacts could still occur in scenarios of natural streamflow changes caused by global climate change. Many of these would be indirect, reflecting the complex relationship between the region and its climate.     

Low dose heparin lock (1000 U/mL) maintains tunnelled hemodialysis catheter patency when compared with high dose heparin (5000 U/mL): A randomised controlled trial

Introduction Heparin is commonly used after hemodialysis treatments as a locking solution to prevent catheter thrombosis. The comparative efficacy and safety of different heparin concentrations to maintain catheter patency has been previously reported in retrospective studies. We conducted a prospective, randomised, controlled study of 1000 U/mL heparin (low dose) versus 5000 U/mL heparin (high dose) locking solution to maintain patency of tunnelled catheters. Methods One hundred patients receiving chronic, unit‐based hemodialysis with newly placed tunnelled hemodialysis catheters (less than 1 week) were randomly assigned to either a low dose (n = 48) or high dose heparin (n=52). The primary intention‐to‐treat analysis examined time to malfunction in both groups over a 90 day period. A secondary analysis compared baseline patient characteristics in relation to catheter malfunction. Findings Overall rate of catheter patency loss was 32% of catheters by 90 days. There was no significant difference in time to malfunction of catheters locked with low dose or high dose heparin (P = 0.5770). Time to catheter malfunction was not associated with diabetic, hypertensive or smoking status. There was no difference in mean delivered blood flow rate, venous and arterial pressure, and dialysis adequacy between low dose and high dose groups. No patient suffered a hemorrhagic complication requiring hospitalisation during the study period. Discussion Low dose heparin is adequate to maintain tunnelled hemodialysis catheter patency when compared with high dose heparin. The study also suggests that there is no relationship between catheter malfunction and diabetic, hypertensive or smoking status.     

Microelectronic control in schools

Abstract This paper reviews various approaches to electronic control which are possible in secondary schools. It presents the case for including elements of work on control in CDT courses, in courses on computer studies and computer awareness. Resources for work in schools are reviewed.     

On a convex hull algorithm for polygons and its application to triangulation problems

A frequently used algorithm for finding the convex hull of a simple polygon in linear running time has been recently shown to fail in some cases. Due to its simplicity the algorithm is, nevertheless, attractive. In this paper it is shown that the algorithm does in fact work for a family of simple polygons known as weakly externally visible polygons. Some application areas where such polygons occur are briefly discussed. In addition, it is shown that with a trivial modification the algorithm can be used to internally and externally triangulate certain classes of polygons in 0(n) time.     

Phase-dependent effects of spinal cord stimulation on locomotor activity.

This paper examines how electrical stimulation of the spinal cord can modulate the output of the central pattern generator (CPG) for locomotion. Application of discrete current pulses to a single spinal segment was shown to affect multiple parameters of an ongoing locomotor pattern in an in vitro spinal cord. For any given stimulus, the effects on frequency, duration, and symmetry of locomotor output were strongly dependent on the phase at which stimulation was applied within the CPG cycle. Additionally, most stimuli had an immediate impact and evinced no effects on subsequent cycles. The most dramatic changes were seen when stimulation was applied during motor bursting: stimuli applied to the ipsilateral spinal hemicord increased the burst length, while stimuli applied to the contralateral spinal hemicord decreased the burst length. Smaller changes were observed when stimulating during delays between motor bursts. Thus, phasic stimulation was shown to influence the behavior of the CPG and spinal locomotion circuits on a cycle-by-cycle basis. This work represents the first step toward our ultimate goal of developing a neuroprosthetic device to restore locomotion after a severe spinal cord injury.     

富裕的理发师[5]

11月22日 雪 关于人寿保险(二) 周末慵懒的下午,刚下完冬天的第一场雪,空气明净而新鲜.而Roy的理发店里面正热闹呢,我、Dave、还有Roy都在.想不到上次谈完人寿保险以后,Roy这次还是继续这个话题.的确,人寿保险并不是"小菜一碟",了解它还是需要时间和耐心的.     

2004年投资手册

2003年12月23日,美国<经济周刊>举办了一个网上投资论坛,这个论坛由<经济周刊>个人投资栏目的总编辑--罗伦·杨主持,她本人在基金和其他的投资上都有非常深入的研究.论坛的发言异常涌跃,许多人都提出了自己对于未来一年的投资困惑;针对这些问题,罗伦同时进行了详细的回答和分析.2004年,是否意味着市场的复苏呢?或许通过这次论坛的一些问题,我们能有所启示.