Time series momentum and moving average trading rules

We compare and contrast time series momentum (TSMOM) and moving average (MA) trading rules so as to better understand the sources of their profitability. These rules are closely related; however, there are important differences. TSMOM signals occur at points that coincide with a MA direction change, whereas MA buy (sell) signals only require price to move above (below) a MA. Our empirical results show MA rules frequently give earlier signals leading to meaningful return gains. Both rules perform best outside of large stock series which may explain the puzzle of their popularity with investors, yet lack of supportive evidence in academic studies.     

The Bankruptcy System's Chapter 22 Recidivism Problem: How Serious is It?

This paper is adapted from the keynote address from the Eastern Finance Association's 2014 meeting in Pittsburg, Pennsylvania. We highlight a recidivism problem: about 15% of debtors who emerge as continuing entities under Chapter 11, or are acquired as part of the bankruptcy process, ultimately file for bankruptcy protection again (18.25% when considering only those firms which emerge as a continuing, independent entity). We argue that the “Chapter 22” issue should not be dismissed by the bankruptcy community just because no interested party objects during the confirmation hearing. Applying the Z”‐Score model to a large sample of Chapter 11 cases reveals highly different and significant expected survival profiles at emergence. Credible distress prediction techniques can effectively predict the future success of firms emerging from bankruptcy and be used by the bankruptcy court to assess the feasibility of the reorganization plan, a requirement mandated by the Bankruptcy Code. Branch reviews, discusses, and critiques in this follow‐up article to Altman's original thesis.     

The post‐application labour market consequences of employment tribunal claims

This article examines the post‐application employment consequences for individuals registering complaints to Employment Tribunals following dismissal or redundancy. We consider several pieces of evidence: (a) the probability of finding another job, (b) the time taken to get a new job and (c) the pay/status of the new job. Our results indicate that age plays a significant role in aspects (a) and (c), while those who previously held managerial positions generally took longest to get a new job and found it most difficult to achieve a similar level of pay/status in their current jobs. Long‐term health problems/disability is associated with significantly worse outcomes on all three measures. Respondents whose cases were dismissed by tribunals without hearings fared worst in terms of obtaining a new job and the time it took to do so. There are, however, fewer differences by tribunal outcome in the relative pay/status of the claimant's current job.     

Deposit market competition,wholesale funding,and bank risk

Empirical research on the effect of bank competition on bank risk has so far produced very inconclusive results. In this paper we revisit this long-standing debate and propose a new empirical approach that is concentrated on the relationship between deposit market competition and bank risk. This approach closely follows the traditional theoretical views of the competition and risk relationship and is focused on testing the classical moral hazard problem of the bank: deposit market competition raises the optimal risk choice of the bank by raising the costs of bank liabilities. Since banks can substitute between retail and wholesale funding, we relate deposit market competition to wholesale market conditions and examine their joint effect on the risk of bank assets. The analysis is based on a unique, comprehensive dataset, which combines retail deposit rate data with data on bank characteristics and data on local deposit market features for a sample of 589 US banks. Our results support the notion of a risk-enhancing effect of deposit market competition.     

Saddlepoint approximations to the mean and variance of the extended hypergeometric distribution

Conditional inference on 2 x 2 tables with fixed margins and unequal probabilities is based on the extended hypergeometric distribution. If the support of the distribution is large, exact calculation of the conditional mean and variance of the table entry may be computationally demanding. This paper proposes a single‐saddlepoint approximation to the mean and variance. While the approximation achieves acceptable accuracy for ordinary practical purposes, an alternative saddlepoint approximation is provided that gives much closer to exact results. It improves the accuracy of current approximations to up to more than four powers of ten.     

医院信息系统的安全管理维护

针对医院网络信息系统中易出现的各种安全方面的问题,提出了一系列的解决方法。     

THE AGEING POPULATION: CRUNCH TIME FOR GOVERNMENT REFORMS

Current discussions about reforms to health and long‐term care miss the most important trends that should be influencing debate. With an ageing population that includes a higher proportion of people with manageable illnesses, health and care costs will rise. Reforms must ensure that existing government spending is used more efficiently and that it harnesses – rather than works against – private financing.     

植物单宁的性质及应用

文章综述了植物单宁的性质及其在医药卫生、食品工业、化妆品、革鞣等领域的广泛应用.