The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In recent years, the demand for autonomous mobile robots in outdoors environments has been increasing. In order to guide the robot, it is essential to get the current position. In this study, we propose a method to correct the self-position of the robot, which is estimated by odometry, aerial imagery, and the SOKUIKI sensor. First, we explore how to superimpose the reflection point cloud on top of...
In this research, we propose a method to distinguish different ground materials using the reflection intensities of the waves obtained by ultrasonic sensor. In previous research, the information obtained by ultrasonic sensor is only used for checking the existence of an object, and/or measuring the distance from an existent object. To go a step further, applying the information obtained by ultrasonic...
Water is an important resource especially for agricultural country like Thailand. Hydro and Agro Informatics Institute of Thailand launched a project which introduces UAVs equipped with video cameras for improvement of the efficiency in water resource survey. This paper presents the UAV system that has been developed in this project. The flight data shows the capability of accurate automatic way-point...
This paper describes improvements for training game of physical posture adaptive for people with developmental disorders, which is developed and already reported by the authors. The Game is a game for exercise user's body posture control. Though it is said that ASD people generally have resistance against new, inexperienced items, all of the ASD subjects are interested in the games without refusal...
This research is mainly to find culture differences when the user interacts with a home robot having facial expressions. Different nations have different cultures, which are inevitably reflected in communicative modes. Without knowledge of these differences in cross-cultural communication, people may find it hard to pass on the desired message and misunderstandings may arise. In order to let the home...
Effects of space radiation on space systems have been considered as the main challenge in designing sustainable space systems, and investigations have been done about the mitigation methods against various types of radiation effects. On March 11, 2011, a massive earthquake and tsunami hit the eastern Japan, particularly Tohoku area. Since then, the Fukushima Daiichi Nuclear Power Station has been...
The Space Robotics Laboratory (SRL) of Tohoku University has developed three 50kg Micro-satellites. The first satellite “SPRITE-SAT” has been successfully launched into Earth orbit, and also been operated. The flight model of the second satellite “RISING-2” has been assembled and its software development is now finalized, being ready for the launch planned in next year. The third satellite “RISESAT”...
Human Behavior Understanding (HBU) is a major challenge facing intelligent agents. Most approaches to solve this problem assume a recognition/detection context in which the agent/robot tries to match the perceived behavior to one or more predefined motion patterns (e.g. walking, running etc). A more challenging problem is discovering these motion patterns without apriori assumption about the motions...
This study presents a laser/vision-based tracking of people in 3D space. A sensor node consisting of a two-layered laser-range scanner (LRS) and fisheye camera is placed in an environment. LRS detects the heads and knees of people, and the camera captures the color images of people detected by the LRS. From the position data of people scanned by LRS, peoples' motion in the horizontal plane is tracked,...
Flocking algorithms for a multi-agent system are distributed algorithms that only have simple rules for each agent but generate complex formational movement. These algorithms are known as swarm intelligence and are robust and disaster tolerant for most cases. On the other hand, most of organizations are constructed from smaller groups, we call it subgroup here. It means activities of organization...
Swarm robotics is the research field of multi-robot systems which consist of many homogeneous autonomous robots without any type of global controllers. In this paper, an evolutionary robotics approach, i.e., the method that the robot controllers are designed by evolutionary algorithms with artificial neural networks, is applied. And we apply an incremental approach to evolution within the context...
Reinforcement learning agents store their knowledge such as state-action value in look-up tables. However, loop-up table requires large memory space when number of states become large. Learning from look-up table is tabularasa therefore is very slow. To overcome this disadvantage, generalization methods are used to abstract knowledge. In this paper, decision tree technology is used to enable the agent...
This research was conducted to develop the system for an installation-type remote control operation for the existing excavator without renovation. It was also conducted to supplement the shortcomings of the existing remote control operation, and to develop a system for applying the multi-yoke-type transmission mechanism and the slide roller mechanism. In addition, this study seeks to develop a system...
The purpose of this paper is to use Grey Relational Analysis (GRA) combined with Analytic Hierarchy Process (AHP) for choosing an English coursebook in the university. First of all, 12 English teachers were interviewed, and the elements of English coursebook were introduced. Next, the proposed GRA combined with AHP method is applied to analyze the importance of coursebook elements. Finally, the results...
In the past two decades, under the double impact of the increasing numbers of universities and the falling birth rate, the enrollment drops have struck many universities. Plus, the lower birth rate results in the impact of universities' enrollment shortfall. Based on the questions above, the paper proposes the method to find the reasons of the main impact factor. First, we collect the factors of total...
Learning metacognitive listening strategies and specializing in the implementation of such strategies enable not only a more efficient use of time but also easier and more sustained listening. This research examines first-year university students' awareness level of metacognitive listening comprehension strategies (MLCS) on learning English as a Foreign Language (EFL). We used Vandergrift et al.'s...
The study found the mucus secreted by fish skin mucus cells, it can defense predators, microorganisms and parasites' invade and attack. This paper wants to discuss extracts of fresh eel mucus physiological effect on Anguilla japonica. The method of tube feeding is used to feed rat for four weeks, and then their biochemical indicators of liver and kidney function are measured. Moreover, the method...
The paper aims to quantify the phenomenon of domestic violence, which based on the gender statistics from Taiwan's government, and use GM (0,N) model as the mathematics model to analyze the problem of domestic violence victims fromyear 2006 to year 2010. The paper proposes the ten influence factors for the domestic violence at first. Through GM (0,N) calculation, the result shows that the three main...
This study explores the key factors influencing the retention of nurses. By using grey relational analysis and grey clustering analysis, the result showed the seven retention factors could explain why high intention nurses would like to stay in nursing. However, the seven retention factors did not reach to high level but fall in low level. It could be inferred that nurses indeed dissatisfy with the...
The study attempts to apply the consolidations between the ANP and GRA to systematically and hierarchically evaluate the research issue: “Constructing evaluation-model on the corporate green-marketing through the integrative perspectives” in order distinctively to versify the three potential candidates. In successively, the measured weighted scale of 0.3736 is located at “The g-marketing does positively...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.