Ikeda, H.: Natural Disaster Area Studies

Ikeda Hopf bifurcation revisited

A large variety of passive optical systems subject to a delayed feedback have appeared in the literature and are described mathematically by the same class of scalar delay differential equations (DDEs). These equations include Ikeda DDE and their solutions are determined in terms of a control parameter distinct from the delay. We concentrate on the first Hopf bifurcation generated by a fixed de...

Disaster studies

Disaster studies address the social and behavioral aspects of sudden onset collective stress situations typically referred to as mass emergencies or disasters. These situations can be created by natural hazards, technological accidents, violent intergroup conflicts, shortages of vital resources, and other major hazards to life, health, property, well-being and everyday routines. Disaster studie...

Ikeda 4_11

Proteinase-activated receptor-2 (PAR-2) is expressed in various tissues, including cancer lesions. However, the functional consequences of PAR-2 expression in cancer cells, especially in pancreatic cancer cells, are poorly understood. To clarify the biological significance of PAR-2 signaling in pancreatic cancer, we examined the production of growth factors and cytokines, such as IL-6, IL-8, bF...

Natural Disaster Prevention and Reduction

Natural disaster risks: An introduction

Hurricane Katrina generated the largest losses of any natural disaster in the history of the United States. The hurricane hit Florida on August 25, 2005 and Louisiana on August 29. Despite having been downgraded from a Category 4 to a Category 3 hurricane, the storm inflicted unprecedented losses. This special issue of the Journal of Risk and Uncertainty deals with the implications of catastrop...