Wage Inequality and the Changing Organization of Work.

This paper sheds light on how changes in the organization of work lead to wage inequality. We present a theoretical model in which workers with a wider span of competence (higher level of multitasking) earn a wage premium. Since abilities and opportunities to expand the span of competence are distributed unequally among workers across and within education groups, our theory explains (1) rising wage inequality between groups, (2) rising wage inequality within groups, and (3) the polarization of work and the decoupling of the income distribution. Using a rich German data set covering a 20-year period from 1986 to 2006, we provide empirical support for our model.

Regulating Search Warrant Execution Procedure for Stored Electronic Communications

Electronic communication services, from email, to social media, tomessaging applications, have not only dramatically changed daily life but have also had a profound impact on criminal investigations and procedure.The often large volume of electronically stored information has led to a two-step process for search warrant execution, codified in Federal Criminal Procedure Rule 41. When conducting a search pursuant to Rule 41, law enforcement often retains both responsive items—materials that fall within the scope of the warrant—and nonresponsive materials—intermingled items that can be searched, but ultimately exceed the scope of the warrant. This possession of nonresponsive material creates a tension between the account holder’s privacy interests and the government’s ability to conduct an effective search.Courts and scholars have implemented and proposed a range of approaches for search warrant execution inlight of concerns about sweeping general searches and the practicalities of searching electronically stored information. This Note examines these approaches to regulate search warrant execution procedure in the context of stored electronic communications. This Note also discusses the strengths and shortcomings of these various mechanisms and concludes that Rule 41 should be amended to provide standards for the retention and use of nonresponsive material

The Techniques of Thin Layer Chromatography and the Study of Carbohydrates Using Thin Layer Chromatography

Refined Kraft pulp is found to contain D (+), Mannose, D (+) Xylose, and Glucose; and not to contain Galactose. Silia gel plates and Kieselguhr plates were used for the separation. Sodium hydroxide was the carrier solvent and the plates conditioned for thirty minutes. The Kamag Vario-KS-Chamber is found to be a good effective laboratory tool. There are many areas where this technique can be used. A detailed historical background is given for a basic background in thin layer chromatography, along with a complete experimental procedure of the use of the Vario-KS-Chamber

Neural Networks in Nonlinear Aircraft Control

Recent research indicates that artificial neural networks offer interesting learning or adaptive capabilities. The current research focuses on the potential for application of neural networks in a nonlinear aircraft control law. The current work has been to determine which networks are suitable for such an application and how they will fit into a nonlinear control law