The problem of finding paths in temporal graphs has been recently considered due to its many applications. In this paper we consider a variant the that, given vertex-colored graph, asks for path whose vertices have distinct colors and include maximum number colors. We study approximation complexity provide an inapproximability lower bound. Then present heuristic experimental evaluation our heur...

The urgent need to provide capital from developing countries and improve the level of technology has made it necessary to attract foreign investment. FDI can respond to this need as an inflow of capital, technology, and technical know-how. The present study investigated the role of FDI attraction determinants through a technology transfer approach comprehensively and coherently. This research w...

In the past few years, a large variety of perovskite solar cells (PSCs) with vivid and well-distinguished color hues have been demonstrated. this Perspective, we compare different strategies employed to realize colorful PSCs both in opaque semitransparent designs. The approaches used modulate PSCs' appearance can be divided into two main categories: first one based on modifications their intern...

0022-1031/$ see front matter 2009 Elsevier Inc. A doi:10.1016/j.jesp.2009.10.002 * Corresponding author. Address: Department of 490 Boston Avenue, Medford, MA 02155, United State E-mail address: [email protected] (J.B. Freem Although the outcomes of race categorization have been studied in detail, the temporal dynamics of realtime processing of race remain elusive. We measured participants’...