What is a serial killer? According to the FBI the definition of a serial killer is the following: The unlawful killing of two or more victims by the same offender(s), in separate events. Since the first famous case of serial murders, the one of Jack The Ripper, society got excited and hyped about the notion. Though serial murders sum up less than 1% of murders, it caused a huge interest in the subject. This definition is crafted after 30 years of different definitions used by law enforcement, clinicians, academia, and researchers. After analyzing all definitions a serial murder was thought to have the following characteristics: • one or more offenders • two or more murdered victims • incidents should be occurring in separate events, at different times • the time period between murders separates serial murder from mass murder What drives a serial killer? Over decades, researchers tried to identify common traits but in the end the conclusion was that serial killers are driven my multiple and different reasons and the only common characteristics that some serial killers had was sensation seeking, lack of remorse and/or guilt.

Defining Serial Murder. Law enforcement agencies, such as the FBI, have worked on a definition of serial murder, distinguishing it from mass murder, in which a number of murders occur in one incident (such as the movie theater slaying in Colorado in 2012). A serial murder consists of at least two to three murders which take place during separate. Objective: Despite substantial interest in the topic, there remains no consensus on the definition of serial killing, particularly in terms of the minimum victim count.

Pump Sizing does the hydraulic calculation for a centrifugal pump and estimates differential head, hydraulic power, motor power, NPSH available. CheCalc Chemical engineering calculations to assist process, plant operation and maintenance engineers. At 200 gpm, this pump produces 20 psig discharge pressure, and as the flow drops the pressure increases, and will be 40 psig at zero flow. Note: this applies to centrifugal pumps, many home owners have positive displacement pumps, often piston pumps. On centrifugal pump sizing and system head calculations. There is no lack of articles or books on the subject but usually only certain isolated aspects of the topic are treated. In a centrifugal pump, a rotating impeller imparts energy to the liquid moving through the pump. Outlet Inlet Low-Pressure Fluid High-Pressure Fluid Fluid Carried Between Teeth and Case pFigure 2. A gear pump is a type of positive-displacement pump in which a discrete volume of fluid is trapped and then discharged. Centrifugal pump efficiency calculation.

Patterns Though it is a common belief that serial killers follow similar patterns, this is far from the truth. This kind of killers are also not restricted to a certain age group, gender and race. Causality Research is very vast and complex.

Some observations were made about why does someone become a serial killer. It is a combination of multiple factors starting with their own development, predisposition and their environment. • Predisposition to serial killing is biological, social, and psychological in nature, and it is not limited to any specific characteristic or trait.

• The development of a serial killer involves a combination of these factors, which exist together in a rare confluence in certain individuals: – There is no generic template for a serial killer. – Serial killers are driven by their own unique motives or reasons.

– The majority of serial killers who are sexually motivated, erotized violence during development, thus for them, violence and sexual gratification are inexplicably intertwined in their psyche. • More research is needed to identify specific pathways of development that produce serial killers Disclaimer: information for this article is provided by the. Privacy Policy 1. An overview of data protection General The following gives a simple overview of what happens to your personal information when you visit our website. Personal information is any data with which you could be personally identified. Detailed information on the subject of data protection can be found in our privacy policy found below.

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