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Inspired by large fatality rates due to fires in crowded areas and the increasing presence of robots in dangerous emergency situations, we have implemented a model of information propagation among evacuees. Information about the locations of exits and the relative confidence of the individual in the location of the exit disseminated through a simulated crowd of people during an evacuation modeled...
From the viewpoints of information theory and system theory, an Information Optimizing Model is proposed based on following rules of language: efficiency, cooperation, distinction, evolution, and reliability. It proposes that language is an optimal encoding system to communicate in the most efficient way. Using this model, a hypothesis is made that when expressing the same meaning using a sentence,...
This paper presents a novel method for controlling a single-joint robot arm driven by two pneumatic artificial muscles (PAMs). We introduce the concepts of the agonist-antagonist muscle-pairs ratio (A-A ratio) and the agonist-antagonist muscle-pairs activity (A-A activity), and demonstrate that our concepts enable separate linear control of the equilibrium joint angle and joint stiffness. We also...
Nowadays, even though countries take measures to control the population, it is reported that the total number of global population has reached 7billion. In 21st century, the human society is still faced with the problems about the unprecedented consumption of material wealth and the unprecedented increase in population [1]. So the researchers should study the dynamic changes of resources and population...
Diffusion-weighted images are increasingly being employed in conjunction with T2-weighted images for accurate diagnosis of cervical cancer. However, these images suffer from eddy-current related and magnetic field inhomogeneity induced distortions. This paper presents an investigation into the reverse gradient technique to correct distortions in diffusion-weighted echo-planar images of human cervix...
Economists unanimously agree that foreign direct investment (FDI) somehow brought about economic growth and development. In this paper, we re-examine this popular view by estimating an optimal threshold value needed to promote growth. Results show that FDI enhances growth only if it is more than 3.14 percentage of GDP in the case of Malaysia. Hence, policy enablers should ensure an annual increase...
Color image segmentation is a critical pre-process in image processing. Also it's important in the field of computer vision and pattern recognition. In this paper, we first state some evidence in the human vision research. Not all the intensity from 0 to 255 in RGB spaces can be distinguished by human vision. So we reduce the level of the intensity in RGB space to 26,28,26 respectively, while maintaining...
We have built Sim Student, a computational model of learning, and applied it as a peer learner that allows students to learn by teaching. Using Sim Student, we study the effect of tutor learning. In this paper, we discuss an empirical classroom study where we evaluated whether asking students to provide explanations for their tutoring activities facilitates tutor learning -- the self-explanation effect...
Recently, study on a control of flexible manipulators have been receiving increasing attension in the domain of master-slave system. The master-slave system is a control system to operate a manipulator for objects in a remote environment which is at a distance from the presence of a human operator. In order to consider the influence by the elasticity of flexible manipulators, it is necessary to study...
There are many input modalities for human-machine interface (HMI). Brain-signal that is one of biosignal has been studied as an input modality for HMI. Brain-signal based HMI can help disabled people to communicate with a machine using the brain's electrical activity. this study is focuses on usability of the EEG-based HMI's for available tools in real life and possibility of the EEG signal as input...
Color composition is an important cue for image retrieval and object classification. In this paper we address the problem of inferring the color composition of visual objects from the pixel-level color distribution over the basic color terms. We build a discriminative model to tag each region with a dominant color and an associate one. We learn the human preference and cooccurrance patterns of the...
In this paper, we address the problem of reconstructing 3D trajectories given only 2D point projection trajectories of an articulated structure. Hitherto, most applications of articulated trajectory reconstruction require: (i) relative lengths, and (ii) camera motion. We propose a novel extension that allows us to in many circumstances circumvent these limitations. Of particular note is our characterisation...
Economic growth modeling for agricultural system is invistigated. The model is describe by a coupled ordinary nonlinear differential equation. The equation can be solved by Runge-Kutta methods. The simulation show that by assuming linear indrustrial growth, the land used tends to constant and the rice production is growth and then become steady. When we consider the technological factor, the rice...
This paper presents a fiber tracking method that solves fiber crossing and avoids anatomically improbable fiber tracts using clinical-quality diffusion tensor images. The method tracks fiber pathways under the guidance of global information from volumetric tract segmentation obtained from the algorithm of diffusion oriented tract segmentation (DOTS). New primary diffusion directions (PDD) are calculated...
A major public health problem in Thai population is due to Malaria. This disease is caused by the multiplication of protozoa parasite of the genus Plasmodium; Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae and Plasmodium ovale. Malaria is found along the border with Burma, Cambodia and Malaysia. There are the different transmission rates of this disease between Thai juvenile and adult...
Weber-Fechner Law was verified in between distance-headway (f) and car speed (y). Nobody has ever noticed this fact, since the traditional idea in analyses of road traffic flow has neglected the viewpoint of driver's human factor. The present paper will show the Law existence by measurements of T(time-headway) and V for each pair of cars subsequently flowing on road (X = VT). All graphical relationships...
Mathematical models here serve as tools for understanding the epidemiology of Human Immunodeficiency Virus (HIV) and Acquired Immunodeficiency Syndrome (AIDS) if they are carefully constructed. This paper deals with the spread of STDs infections and in particular HIV epidemics. This article emphasis is on the epidemiological impacts of AIDS and the role of mathematical modeling in the study, to establish...
Many different robot learning from demonstration methods have been applied and tested in various environments recently. Representation of learned plans, tasks and policies often depends on the technique due to method-specific parameters. An agent that is able to switch between representations can apply its knowledge to different algorithms. This flexibility can be useful for a human teacher when training...
Understanding human/bicycle interactions is crucial not only for enhancing bicycle (motorcycle) safety but also for designing new bicycle-based rehabilitation devices. In this paper, we present stability analysis of a human neurological control of stationary bicycles. The stability results are obtained through using the sweeping frequency method and the stability charts for time-delay dynamical systems...
Golden ratio is often denoted by the Greek letter, usually in lower case, Phi (ϕ) which is an irrational mathematical constant, approximately 1.6180339887. Because of its unique and interesting properties, many mathematicians as well as renaissance artists and architects studied, documented and employed golden section proportions in remarkable works of sculpture, painting and architecture. Robot sizing...
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