TORNADO NEAR CARBONDALE, ILL

Tornado Warnings and Tornado Fatalities : The Case of May 22 , 2011 Tornado in Joplin , Missouri

Tornado Forecasting: A Review

Present-day operational tornado forecasting can be thought of in two parts: anticipation of tornadic potential in the storm environment, and recognition of tornadic storms once they develop. The former is a forecasting issue, while the latter is associated with warnings (or so-called nowcasting). This paper focuses on the forecasting aspect of tornadoes1, by dealing primarily with the relations...

Carbondale 15 . Delayed - Return Hunter - Gatherers in Africa ? Historic Perspectives

The material characteristics and past distribution of delayed­ return hunter-gatherers in Africa are investigated through ethnoarchae­ ological research among the Okiek and an archaeological study of the Kansyore. We recognize groups with delays in return but without hier­ archy as moderate delayed-return hlmter-gatherers. The Ownership Model, developed here, allows identification of such group...

Tornado Inflicted Damages Pattern

On average, about a thousand tornadoes hit the United States every year. Three out of every four tornadoes in the world, occur in the United States. They damage life and property in their path and they often hit with very little, sometimes no warning. Tornadoes cause approximately 70 fatalities and 1,500 injuries in US every year. The interest of this study is to find whether the fatalities and...

Ill-conditionedness Needs Not Be Componentwise near to Ill-posedness for Least Squares Problems

The condition number of a problem measures the sensitivity of the answer to small changes in the input, where “small” refers to some distance measure. A problem is called illconditioned if the condition number is large, and it is called ill-posed if the condition number is infinity. It is known that for many problems the (normwise) distance to the nearest ill-posed problem is proportional to th...