Genetic algorithms are often well suited for multiobjective optimization problems. In this work, multiple objectives pertaining to the THUNDER software were concerned to optimize the war results obtained from the software. It is a stochastic, two-sided, analytical simulation of military operations. The simulation is subject to internal unknown noises. Due to these noises and discreetness in the...

We present a new method of locating current flow in lightning strikes by inversion of thunder recordings constrained by Lightning Mapping Array observations. First, radio frequency (RF) pulses are connected to reconstruct conductive channels created by leaders. Then, acoustic signals that would be produced by current flow through each channel are forward modeled. The recorded thunder is conside...

Cooperative substation records of hail and thunder incidences have been used as a source of data to devclop more accurate and detailed average patterns of these phenomena. Since the accuracy and completeness of records by volunteer observers are generally considered questionable, a method of determining accurate substation records of thunder and hail was devised. The evaluation method relies st...

It’s common to accompany the rollout of a new biomedical journal with an explanation for its coming into being, usually by suggesting there’s an unmet need, despite the panoply of existing journals. I’m not going to do that, at least not exactly. The biomedical literature is almost unimaginably vast already, much more than even the most diligent speed-reading scholar-who-listens-to-science-blog...

Previous measurement campaign, realized in France in 2005, has shown that an infrasound station can clearly measure thunder when lightning occur within 75 km from the station. In this paper, infrasound data recorded in Ivory Coast since 2005 are analyzed and compared to WWLLN data in order to quantify statistically the main trends observed in 2005. The main results are : (1) the (infrasonic) th...

Lead Zirconate Titanate, PZT, layered into a composite with different materials, produces pre-stressed, curved, devices capable of enhanced displacement. This study focuses on Thunder and Lipca which are built using different combinations of constituent materials. Thunder devices consist of layers of aluminum, PZT, and stainless steel bonded with a hot-melt adhesive. Lipca devices consist of ca...

Wei-chin Lee is Associate Professor of Political Science at Wake Forest University. His publications have appeared in a number of scholarly journals, including Asian Survey, Asian Perspective, Issues and Studies, Journal of Contemporary China, Journal of Asian and African Studies, Ocean Development and International Law, SAIS Review, Studies in Comparative Communism, and World Affairs. His most...