scholarly journals The role of modern control theory in the design of controls for aircraft turbine engines

Author(s):  
J. ZELLER ◽  
B. LEHTINEN ◽  
W. MERRILL
Author(s):  
Michael Gottfredson ◽  
Travis Hirschi

Modern Control Theory and the Limits of Criminal Justice updates and extends the authors’ classic general theory of crime (sometimes referred to as “self-control theory”). In Part I, contemporary evidence about the theory is summarized. Research from criminology, psychology, economics, education, and public health substantially supports the lifelong influence of self control as a significant cause of problem behaviors, including delinquency and crime, substance abuse, school problems, many forms of accidents, employment instability, and many poor health outcomes. Contemporary evidence is supportive of the theory’s focus on early socialization for creation of higher levels of self control and other dimensions of the theory, including the roles of self control, age and the generality or versatility of problem behaviors, as well as the connections between self control and later teen and adult problem behaviors. The book provides methodological assessments of research on the theory, contrasting the control theory perspective with other developmental perspectives in criminology. The role of opportunity, the relationship between self and social control theory, and the role of motivation are addressed. In Part II, control theory is taken to be a valid theory and is used to explore the role of criminal sanctions, especially policing and prisons, and policies about immigration, as methods to impact crime. Modern control theory provides an explanation for the general lack of effectiveness of formal, state sanctions on crime and instead provides substantial justification for prevention of delinquency and crime by a focus on childhood. The theory effectively demonstrates the limits of criminal sanctions and the connection between higher levels of self control and positive life-course outcomes.


Author(s):  
Michael Gottfredson ◽  
Travis Hirschi

Research on self control from several disciplines demonstrates that relatively high levels of self control, emerging from childhood, create considerable personal advantages that accumulate throughout life. This chapter summarizes modern control theory and discusses directions for future development. It highlights the advantages of control theory, including disciplinary-free definitions of human nature and self control and the focus on childhood socialization. The potential for advances in measurement and application is described. Contributions of the theory to public policy are summarized. The role of higher levels of self control for lifelong advantages and the benefits of prevention are described as expectations of the theory worthy of considerable attention. The value of the theory for macro and comparative criminology is discussed.


2001 ◽  
pp. 23-70
Author(s):  
Branislav Kisačanin ◽  
Gyan C. Agarwal

1978 ◽  
Vol 100 (3) ◽  
pp. 209-213 ◽  
Author(s):  
G. Langholz ◽  
M. Sokolov

The question of whether a system is controllable or not is of prime importance in modern control theory and has been actively researched in recent years. While it is a solved problem for linear systems, it is still an open question when dealing with bilinear and nonlinear systems. In this paper, a controllability criterion is established based on a theorem by Carathe´odory. By associating a given dynamical system with a certain Pfaffian equation, it is argued that the system is controllable (uncontrollable) if its associated Pfaffian form is nonintegrable (integrable).


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