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The development of modern air defense missile systems requires robust simulations to adequately place margins on hardware and software design. Coupled with this is the need to accurately model surface reflections that constitute clutter to the missile system. A thorough understanding of these reflections is becoming increasingly important as the air defense threat evolves from large, high-altit...

Multilevel thresholding is one of the most popular image segmentation techniques. This paper presents a new multilevel maximum entropy thresholding method based on modified seeker optimization (MSO) algorithm. In the proposed method the thresholding problem is treated as an optimization problem and solved by using the MSO metaheuristics. Particle swarm optimization (PSO) algorithm is also imple...

The flight environment of the Standard Missile, Block IV A interceptor involves high speeds that place severe aerodynamic and aero-thermalloads on the missile optical window and sensor. The supersonic flow over the missile produces aero-optical effects that can degrade IR seeker performance. This report summarizes an analysis of aero-optical aberrations due to shock front and shear layer densit...

This article presents a method for new ideas selection, which uses clustering to filter while considering the seeker’s goals and learning dynamics. Most of previous research has considered idea provider as main subject analysis. Instead, we focus on bounded rationality solution seeker. Seekers often estimate that cost an challenge comes from reward itself; yet, making mistakes in selection proc...

In this paper we argue for buffering group awareness information to mitigate information overload and help users keep up with the group. We propose an attentive groupware device, called the opportunity seeker, that leverages the natural alternation between a user doing individual work and attending to the group to automatically manage the timing and quantity of information to be delivered based...

People-Finder Systems are knowledge repositories that attempt to manage knowledge by holding pointers to experts who possess specific knowledge within an organization. This paper presents insights from the development of Expert Seeker, an organizational People-Finder KMS that will be used to locate experts at the National Aeronautics and Space Administration (NASA). This paper discusses insight...

Through a phone-based field experiment, I investigated the effect of mental help seekers' race, class, and gender on the accessibility of psychotherapists. Three hundred and twenty psychotherapists each received voicemail messages from one black middle-class and one white middle-class help seeker, or from one black working-class and one white working-class help seeker, requesting an appointment...

Although creativity is encouraged in the abstract it is often discouraged in educational and workplace settings. Using an agent-based model of cultural evolution, we investigated the idea that tempering the novelty-generating effects of creativity with the novelty-preserving effects of imitation is beneficial for society. In Experiment One we systematically introduced individual differences in ...

The role of disability in producing disadvantage employers’ hiring assessments was explored a factorial survey, where random sample Norwegian employers ( n = 1341) evaluated fictional job-seeker profiles. results revealed that including an impairment description profile significantly decreased the likelihood would want to hire candidate. degree varied with type impairment. Being eligible for wa...