This paper is concerned with empirical and theoretical basis of the E¢ cient Market Hypothesis (EMH). The paper begins with an overview of the statistical properties of asset returns at di¤erent frequencies (daily, weekly and monthly), and considers the evidence on return predictability, risk aversion and market e¢ ciency. The paper then focuses on the theoretical foundation of the EMH, and sho...

In this note, we provide a multistage game form which may be used for managing aggressive ‡ows which may cause network congestion or monopolisation. The mechanism here presented attains economic e¢ciency, technical e¢ciency and other desirable properties.

We characterize the sharing rule for which a contribution mechanism achieves e¢ ciency in a cooperative production setting when agents are heterogeneous. The sharing rule bears no resemblance to those considered by the previous literature. We also show for a large class of sharing rules that if Nash equilibrium yields e¢ cient allocations, the production function displays constant returns to sc...

In Data Envelopment Analysis when the number of decision making units is small the number of units of the dominant or e cient set is relatively large and the average e ciency is generally high The high average e ciency is the result of assuming that the units in the e cient set are e cient If this assumption is not valid this results in an overestimation of the e ciencies which will be larger f...

The problem of labelling speaker turns by automatically segmenting and clustering a continuous audio stream is addressed. A new clustering scheme is presented and evaluated using a clustering e ciency score which treats both agglomerative and divisive clustering strategies equally. Results show an e ciency of 70% can be obtained on both manually and automatically derived segments on the 1996 Hu...

the paper attempts to study the efficiency of crop production and resource use effi-ciency on temple tenants and owner farms in tirunelveli district of tamil nadu. a sam-ple of 90 temple tenants and 50 owner farmers from two taluks of tirunelveli district, nawely, shencottah and tenkasi were selected for the study. the reference period of the study was 2002-2003. the efficiency analysis with th...

Colloidal quantum dots (QDs) offer greatly advantageous features including high emission effi ciency, [ 1,2 ] narrow emission linewidth, [ 3,4 ] tunable emission wavelength, [ 5,6 ] and low-cost solution-processing, [ 7 ] making them one of the most promising materials for lighting-emitting diodes (LEDs). Recently, current-driven quantum dot lighting-emitting diodes (QLEDs) have been intensivel...

HPF was originally created to simplify high-level programming of parallel computers. The inventors of HPF strove for an easy-to-use language which was intended to enable portability and e ciency. However, up until now the desired e ciency has not been reached. On the contrary, HPF programs are notorious for their poor performance. This paper provides a rehabilitation of HPF. It is demonstrated ...