In mathematical finance, backtest overfitting connotes the usage of historical market data to develop an investment strategy, where too many variations of the strategy are tried, relative to the amount of data available. Backtest overfitting is now thought to be a primary reason why investment models and strategies that look good on paper often disappoint in practice. Models and strategies suff...

Background: Apart from the mortality, road traffic injuries are associated with significant morbidities. This study has aimed to examine the pattern of traffic accident-related extremity fractures/dislocations and their related disabilities. Methods: A retrospective hospital-based study was conducted to assess the characteristics of limb fractures/dislocations among road traffic accident victi...

Information on the productivity, costs and applications of the logging system is a key component in the evaluation of management plans for the rehabilitation and utilization of Caspian forests. Skidding and road construction costs are expensive forest operations. Determining the optimum forest road network density is one of the most important factors in sustainable forest management. Logging me...

During the last decade, significant progress was achieved in terms of policy and institutional reforms in the financial sector in India. A question that needs to be addressed is: how far have these initiatives resulted in narrowing the inter-market divergences and achieved reasonable degree of the market integration? This paper examines this issue empirically and attempts to provide some eviden...

The intelligent vehicle navigation based on machine vision is the important part to realize Intelligent Transportation System (ITS), and it includes road detection, obstacle detection and motion control. Combining with foreign and domestic latest research trends, in this article, we mainly study the typical method of road detection, and point out the research and development tendency of intelli...

Seit über 50 Jahren beschäftigt sich die Wissenschaft ernsthaft mit dem Thema ”Stau”. Ob Fahrzeuge, Menschen, Tiere oder Mikroben, überall wo sich viele ähnliche Objekte zur selben Zeit am selben Ort in dieselbe Richtung bewegen wollen, tritt er auf. Oft ohne erkennbaren Grund und plötzlich (”Stau aus dem Nichts”). In der Zwischenzeit sind manche Rätsel geklärt, einiges aber bleibt auch weiterh...