• The Journal of Korea Robotics Society
• /
• v.16 no.1
• /
• pp.56-63
• /
• 2021

As the use of robots in service area increases, research has been conducted to replace human tasks in daily life with robots. Among them, this study focuses on the tidy-up task on a desk using a robot arm. The order in which tidy-up motions are carried out has a great impact on the success rate of the task. Therefore, in this study, a neural network-based method for determining the priority of the tidy-up motions from the input image is proposed. Reinforcement learning, which shows good performance in the sequential decision-making process, is used to train such a task planner. The training process is conducted in a virtual tidy-up environment that is configured the same as the actual tidy-up environment. To transfer the learning results in the virtual environment to the actual environment, the input image is preprocessed into a segmented image. In addition, the use of a neural network that excludes unnecessary tidy-up motions from the priority during the tidy-up operation increases the success rate of the task planner. Experiments were conducted in the real world to verify the proposed task planning method.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.21 no.3
• /
• pp.36-42
• /
• 2022

Whereas the necessity for recycling and reuse is being emphasized owing to the depletion of resources and waste disposal problems caused by the continuous development of the industry, the importance of remanufacturing has been highlighted recently. Re-manufacturing involves a series of processes in which failed disposal or aging goods are recovered to a state similar to that of a new product. In this regard, machine tools, which are large structures, can achieve the effect of remanufacturing. Among the various elements constituting the machine tool, the main spindle portion that affects the processing precision is critical. Therefore, this study is conducted to derive improvement measures for the main axis of an old Miller planner via reverse engineering and central composite design, which is one of the core processes of remanufacturing.

• Journal of the Korean Data and Information Science Society
• /
• v.24 no.6
• /
• pp.1369-1384
• /
• 2013

In this study, we investigate various factors affecting five kinds of life planners' satisfaction after turnover which are general, human relations within organization, sales environment support, economic, life planner management system. Also we suggest theoretical and practical implication to them. The results of survey of life planners are as follows. First, in the general life planners' satisfaction after turnover, insurance company belonged to, recognition on own sales ability, life planners' satisfaction level, financial and insurance related award, education level, marital status, size of branch, and surrounding recognition about life planner are influential factors on it. Second, factors which affect the life planners' human relations satisfaction within organization after turnover are size of branch, surrounding recognition about life planner, and insurance company belonged to. Third, factors which affect the life planners' sales environment support satisfaction after turnover are surrounding recognition on life planner, insurance company belonged to, certificates relating to finance or insurance, size of branch, Fourth, in the solicitors' economic satisfaction after turnover, mainly demographic factors such as education level, marital status, age are crucial to it and also life planners' satisfaction level is influential factor. Last, in the solicitors' management system satisfaction, only experienced turnover type is a influential factor.

• Journal of Family Resource Management and Policy Review
• /
• v.8 no.1
• /
• pp.15-28
• /
• 2004

Financial planning in the United States has evolved since 1980 from a field comprised of specialists, such as insurance agents, bankers, accountants, and stock brokers, offering particular services to clients, to the situation today, where most professionals offering financial services to households market themselves as comprehensive financial planners. The breadth of knowledge required for financial planning can be seen in the 106 topics covered by the Certified Financial Planner(CFP) Exam. This study reviews the actual conditions of financial planning in the U.S. including suppliers of financial services to household, the philosophy of financial planning, and the financial planning process as described by the CFP Board. Also, this study discusses related research about problems and challenges faced by households in financial planning in the U.S.

• Journal of Institute of Control, Robotics and Systems
• /
• v.7 no.1
• /
• pp.1187-1195
• /
• 2001

This paper presents a sweeping path planning algorithm for an autonomous smearing robot. An automatic planner generates a sweeping path pattern by proposed five basic procedures. This algorithm rocog-nizes obstacle on the architectural CAD draft and generates subgoals as tracking points which executes the area filling task based on heuristic approach. A sweeping path is planned by sequentially connecting the track-ing points in such a way that(1) the connected line segments should not be crossed, (2) the total tracking points should be as short as possible, and (3) the tracking line should not pass through the obstacle, Feasibility of the developed techniques has been demonstrated on a real architectural CAD draft.

• Proceedings of the KIEE Conference
• /
• 1991.11a
• /
• pp.51-54
• /
• 1991

As a transmission network planning should be optimal in the sense of technology, economy and reliability, an adequate optimization tool is required. The simulation model is valuable at this case. It enables the planner to detect the weak points of the system by providing the planner with unsupplied powers, operating cost, and active losses at each substation node and each line. This paper represent the example of application of simulation model for power system planning.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2005.05a
• /
• pp.905-910
• /
• 2005

Increasing population in the cities, it has been demanded that urban planner should consider environmental problem. In this regard compact city has been strongly suggested as an environmental urban form which can reduce energy consumption. However, compact city can also cause noise problem, because residential buildings have to be located near roads and railways. In order to solve this problem, it is necessary for urban planner to examine the types of roads and railways before they are established. Noise map is able to be useful tool for the task.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 1993.10a
• /
• pp.593-597
• /
• 1993

This paper introduces robust trajectory planner for obstacle and singularity avoidance in a nonresonant robot manipulator. In this work, we propose new trajectory generator in cartesian space by use of Bezier function. Also, SR-inverse is used for obstacle and singularity avoidance of nonredundant robot. This result is verified with 3-D simulator which has been developed to examine the effectiveness of the suggested method.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2001.10a
• /
• pp.283-285
• /
• 2001

The most work-space invest much time and labor for optimal arrangement. The work-plates of the work-space should be arranged, processed and assembled under the restricted work space. The optimal arrangement under the terms of a restriction arrange the maximum work-plates in appointed work-space. It's the central aim. The work-plates arrangement scheduling of the most work-space are achieved through the experience of the planner. Like this, if the work-plates arrangement is worked by hand, there spend much time for the training planner. And the burden of the personnel expenses occur for using the master worker, also there are dangerous factors to be able to bring the bottleneck circumstance for the process planning, because the quick work planning does not accomplish. With such problems, the biggest problem is inferior the value of the plan. For solved the such problem of hand-operating, some work-spaces developed and used the work-plate arrangement scheduling system for the special quality of themselves. This paper make research into a plan to develop the work-plate arrangement scheduling system efficiently.

• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.24 no.4
• /
• pp.441-447
• /
• 2015

This paper proposes a novel fuzzy-based multi-criteria decision making method and implements a footstep planner for humanoid robots with it. Humanoid robots require additional footstep planning process in addition to path planning for the autonomous navigation. Moreover, it is necessary to consider safety and energy consumption as well as path efficiency and multi-criteria decision making is indispensable. The proposed method can provide not only well- distributed and non-dominated, but also more preferable solutions for users. The planned footsteps by the proposed method were verified through simulation. The results indicate that the user's preference is properly reflected in optimized solutions maintaining solution quality.