• Transactions of the Korean Society of Machine Tool Engineers
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• v.16 no.3
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• pp.37-43
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• 2007

Recent technological developments in machine tools have been focused on high speed, low vibration machining and high precision machining. And the concern with multi-functional machining has been increased for the last several years. Multi-tasking machines are widely used in machine tool industries. Laser multi-tasking machine has been developed for high precision and fewer vibration machining. The purpose of this study is to evaluate the effects of structural reinforcement on Laser multi-tasking machine which is comprehensively combined turning center and laser machine. Up to date, for the structural stability evaluation of a multi-tasking machine, the analysis model has been considered only the weight of the upper parts. The positions of upper parts on multi-tasking machine have not been considered in the model. So, the results of the present FE model have revealed some difference with measurement data in case of multi-tasking machine. Design of the machine and structural analysis is carried out by FEM simulation using the commercial software CATIA V5. In the result of the structural analysis, effectiveness of reinforcement of the bed was confirmed.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.938-943
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• 2009

This paper presents the minimum groups of tasks that should allow for multi-tasking by each main task when using a mobile phone. Imaging the situation that various tasks are seamlessly happened and making clear which tasks they need are not simple for users. Thus, we explore multi-tasking needs between every two tasks first, out of entire 16 functions selected from general functions that mobile phones have. Next, we create multi-tasking scenarios by analogy connecting each previous task to appropriate tasks that user's needs are revealed. In this manner, 11 scenarios are introduced finally. We expect that the result of our research is possible to be applicable to the development of user-centered design that multi-tasking contexts are considered.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.15 no.2
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• pp.78-83
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• 2016

The development of an exclusive 8-axis multi-tasking machine to finish multiple cutting processes by a single piece of power equipment for securing the high-precision machining and high productivity of the series of shafts (a core part of the automotive powertrain that delivers engine power) is needed. The rigidity of the structure must be improved and the weight of the structure must be reduced to develop a multi-tasking machine with high precision and high productivity. In this paper, we perform a static structural analysis of the initial design of the multi-tasking machines and compare the results of the multi-tasking machines improved by the reinforced design and the results of the initial one. According to the results of the structural analysis, the rigidity of the reinforced machine was increased and the overall weight was decreased. Therefore, the productivity was increased.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2004.04a
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• pp.21-26
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• 2004

This research presents a modeling and a manufacturing method of insert type milling cutters such as face cutter, flat endmill and ball endmill. The methods introduced in this paper adopts the multi-tasking 5-axis machining that is increasing machining accuracy of holder and position accuracy of bolting points. So this can be used in the basic document of the total package program that involves modeling and manufacturing module in various insert cutters.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.14 no.1
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• pp.9-14
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• 2015

To build a high precision machine tool and increase its productivity, structural analysis needs to be carried out for vibration and stiffness of the machine tools before any detailed design. Therefore, in this paper, static and dynamic analysis is carried out to evaluate 8-axis multi tasking machining beds for automotive power train shafts; then, selection of an appropriate device is made for application to bed design. The results of structural and modal analysis confirmed the structural characteristics of the 8-axis multi tasking machine for automotive power train shaft beds: and the second shape bed is the safest is considered secure.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.455-456
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• 2006

Multi-tasking machines are widely used in machine tool industries nowadays. This study focuses on the effect of load on the structure stabilities of laser multi-tasking machine which is comprehensively combined turning center and laser machine. For design of the machine, simulation of structural analysis is carried out varying number of elements. The analysis is carried out by FEM simulation using the commercial software, CATIA V5. This method showed a proper number of elements can be selected to obtain good result by reduced computation time.

• Journal of the Ergonomics Society of Korea
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• v.26 no.3
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• pp.67-80
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• 2007

Digital convergence, defined as the creative fusion of once-independent technologies and service, is getting more attention recently. Interruptions among internal functions happen frequently in digital convergence products because many functions that were in separate products are merged into a single product. Multi-tasking and multi-modality are two distinctive features of interruption in digital convergence products, but their impacts to the user have not been investigated yet. This study conducted a controlled experiment to investigate the impacts of multi-tasking and multi-modality on the subjective satisfaction and objective performance of digital convergent products. The study results indicate that multi-tasking and multi-modality have substantial effects individually as well as together. The paper ends with practical and theoretical implications of study results as well as research limits and future research.

• Fashion & Textile Research Journal
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• v.23 no.1
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• pp.57-69
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• 2021

This study investigated the influences of experiential marketing components on shopping flow, store satisfaction, and purchase intention in fashion complex culture stores. The mediating effects of shopping flow and store satisfaction were also explored in the relationship between experiential marketing components of fashion multi-tasking culture stores and purchase intention. An online survey was conducted with male and female shoppers between the ages of 20 and 30 in Shanghai, China who visited fashion multi-tasking culture stores. Data from 165 participants were analyzed employing SPSS 24.0 and AMOS 24.0. There were several meaningful results of this study. First, the analysis of the subdimension of experiential marketing components (Sense, Feel, Think, and Act-Relate) clearly showed a factorial construct. Second, the components of experiential marketing showed significantly positive effects on shopping flow and store satisfaction in the fashion multi-tasking culture store. Third, the shopping flow and store satisfaction played important medicating roles in the relationship between experiential marketing components (Act-Relate on shopping flow, Sense and Act-Relate on store satisfaction) and purchase intention. The results suggest that experiential marketing components with shopping flow and store satisfaction should be promoted among Chinese consumers to enhance purchase intentions in fashion multi-tasking culture stores.

• 제어로봇시스템학회:학술대회논문집
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• 1988.10a
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• pp.507-510
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• 1988

The main subject of this paper is the development of new ROBOT CONTROLLER, which can support MULTI-TASKING and MULTI-ROBOT functions. The system consists of various kinds of CPU modules according to their independent jobs. Acceleration and Deceleration profile is given in order to achieve the smooth robot motion and high cycle time. Further the communication capacity should be upgraded to meet the various kinds of peripheral PA devices.

• Journal of the Korean Society for Precision Engineering
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• v.29 no.2
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• pp.147-155
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• 2012

Wind power, which is one of the promising renewable energies, has shown the high growth rate of 35 % of the annual average in the recent 5 years and also windmill related equipment market has been fast-growing. Yaw & Pitch bearing are the key parts of windmill and are machined by huge vertical lathe which is monopolized by the advanced countries. The purpose of this study is to develop the multi-tasking vertical lathe for 5 MW grade windmill bearings, which might be mass produced 3 or 5 years later. In this study, the structure of the crossrail and rotary table, which are the key units of the huge multi-tasking vertical lathe, were optimized through the finite element analysis. Also the basic performance of the rotary table has been evaluated.