The worldsheet low-energy limit of the AdS_4 x CP^3 superstring

We consider the AdS_4 x CP^3 IIA superstring sigma-model in the background of the "spinning string" classical solution, which possesses two Noether spins. In the limit when one of the spins is infinite there are massless excitations, which govern the infrared worldsheet properties of the model. We obtain a sigma-model of CP^3 with fermions, which describes the dynamics of these massless modes.Comment: 41 page

Police Academy Training: An Evaluation of the Strengths and Weaknesses of Police Academies

The purpose of this paper is to give an overview of the historical and current protocols which have existed in police academies, with a focus on the gender issues being faced by female police officers. The development of the police force is examined, with explanation of the differences and developments aligning with each era of history. Next, current police practices are elaborated upon, emphasizing the difficulties women experience in becoming police officers and where the ideologies of the police academies originated. Finally, suggestions are given based on research findings in order to reduce the ideological divides that occur in the police force and increase the effectiveness of officers’ work in the community

The Problem of Adhesion Methods and Locomotion Mechanism Development for Wall-Climbing Robots

This review considers a problem in the development of mobile robot adhesion methods with vertical surfaces and the appropriate locomotion mechanism design. The evolution of adhesion methods for wall-climbing robots (based on friction, magnetic forces, air pressure, electrostatic adhesion, molecular forces, rheological properties of fluids and their combinations) and their locomotion principles (wheeled, tracked, walking, sliding framed and hybrid) is studied. Wall-climbing robots are classified according to the applications, adhesion methods and locomotion mechanisms. The advantages and disadvantages of various adhesion methods and locomotion mechanisms are analyzed in terms of mobility, noiselessness, autonomy and energy efficiency. Focus is placed on the physical and technical aspects of the adhesion methods and the possibility of combining adhesion and locomotion methods