• Journal of Ginseng Research
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• v.17 no.3
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• pp.219-223
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• 1993

Assessment of root weight grade system for the numeral definition in Korea ginseng was tried by investigation of 13 boxes of the 15-root-grade of 4-year-old white ginseng as a model. In this case satisfaction to theoretical value was 58% in root weight and 50% in root number. The coefficient of variation (CV) was high (35%) for individual root weight in package. The CV of tap root weight 1 among package is low (7.1%) even though there was no significant correlation between tap root weight : and lateral root weight among roots. The mean percentage of tap root to root weight in each package ranged 61 to 74% with CV range of 16.5 to 33.2%. The CV was not much different between 1st and 2nd lateral root weight and the means was above 60%. Strict practice of numeral definition of root weight grade system will be prerequisite for chemical standardization of Korea ginseng.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.6
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• pp.1134-1141
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• 2006

Java is platform-independent and supports uniform solutions from mobile area (J2ME) to enterprise area (J2EE), so Java is a good development tool for the environment of heterogeneous machines and distributed applications. Java applications need access control module as a Java package. In this paper, we design and implement it. Therefore Java developers can reduce development time, and system managers easily do access control work. Proposed module is based on Role-Based Access Control (RBAC) model and includes a Java package and administration tool.

• International conference on construction engineering and project management
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• 2024.07a
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• pp.823-830
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• 2024

Effective project planning is essential in construction project management for timely delivery and economic benefit realization. Work packages are pivotal in this planning, providing clear organization and progress tracking. However, existing methods for creating work package schemes often overlook environmental sustainability, specifically carbon emissions-a growing concern in construction. This study introduces a tabu search-based optimization method for work package schemes, aiming to reduce both project costs and carbon emissions. A cost-carbon model is devised, and a tabu search algorithm is developed to identify the Pareto frontier for total project cost and carbon emissions. A case study shows the tabu search outperforms existing heuristics, reducing carbon emissions by 6.19% with a marginal cost increase of 0.9%. The algorithm's adaptability and generalizability suggest it could significantly enhance economic and sustainable outcomes in construction project planning.

• The Journal of the Korea Contents Association
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• v.7 no.3
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• pp.17-24
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• 2007

SIP-based tightly coupled conference, which has a centrally located conference server for controlling and management, can be classified several models according to location of focus and mixer. These are centralized server model, endpoint server model, media server component model and distributed mixing model. However each model has its strength and weakness. In this paper, we propose and implement a SIP-based effective hybrid-type conference model which decreases amount of SIP signaling messages, lowers load of server media mixer, and can be easily expandable to large scale conference. In this model, when the number of participants exceeds a pre-defined limit, the conference server selects some participants which posses specific functions and let them share functions of notifications of conference state event package and media mixing. When each participant subscribes conference state event package to the server, it can indicates its possession of such functions by a specific header message. The server stores the indication to the conference information database, and later uses it to select participants for load sharing. The performance of our proposed model is evaluated by experiments.

• Journal of Advanced Marine Engineering and Technology
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• v.39 no.8
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• pp.801-806
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• 2015

The experimental analysis of a crevice-type vapor chamber heat pipe (CVCHP) is investigated. The heat source of the CVCHP is a high-power light-emitting diode (LED). The CVCHP, which exhibits a bubble pumping effect, is used for heat dissipation in a high-heat-flux system. The working fluid is R-141b, and its charging ratio was set at 60 vol.% of the vapor chamber in a heat pipe. The total thermal conductivity of the falling-liquid-film-type model, which was a modified model, was 24% larger than that of the conventional model in the LED package. Flow visualization results indicated that bubbles grew larger as they combined. These combined bubbles pushed the working fluid to the top, partially wetting the heat-transfer area. The thermal resistance between the vapor chamber and tube in the modified design decreased by approximately 32%. The overall results demonstrated the better heat dissipation upon cooling of the high-power LED package.

• Journal of the Microelectronics and Packaging Society
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• v.25 no.1
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• pp.17-22
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• 2018

In this paper, the effects of solder joint aging on the reliability of embedded package solder joints were investigated using numerical analysis by finite element method. Solder joints were SAC305 with aging time 0, 60, 180 days. For reliability analysis, warpage of package and equivalent creep strain (ECS) and total strain energy density (TSED) of solder joint were analyzed. The analysis results show that the package warpage is decreased in the case of the embedded package compared to the non embedded package, and the reliability life of the solder joint is predicted to be high. Also, it was interpreted that the longer the aging time, the less the warpage of the embedded package, but the reliability life of the solder joint would be shortened.

• Communications for Statistical Applications and Methods
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• v.30 no.4
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• pp.355-368
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• 2023

This article introduces the R package ELCIC (https://cran.r-project.org/web/packages/ELCIC/index.html), which provides an empirical likelihood-based information criterion (ELCIC) for model selection that includes, but is not limited to, variable selection. The empirical likelihood is a semi-parametric approach to draw statistical inference that does not require distribution assumptions for data generation. Therefore, ELCIC is more robust and versatile in the context of model selection compared to the currently existing information criteria. This paper illustrates several applications of ELCIC, including its use in generalized linear models, generalized estimating equations (GEE) for longitudinal data, and weighted GEE (WGEE) for missing longitudinal data under the mechanisms of missing at random and dropout.

• The Journal of the Korea Contents Association
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• v.6 no.2
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• pp.17-26
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• 2006

SIP(Session Initiation Protocol)-based centralized conference service model has advantage of easiness in conference management and service as compared to other models. However when media server which is one of the components of conference server is included in the conference server, this model shows disadvantage of high server work load with increasing numbers of conferences and participants. In this paper, to improve this problem, we have suggested and implemented a new conference service model in which an UA(User Agent) who first make the conference acts as a media server instead of conventional conference server and, the conference server with conference event package takes only part of management of the conference and its participants. Therefore, many more conferences can be held and managed compared to the conventional centralized conference service model because load of the conference server decreases in our suggested model md, furthermore the participants needs only make SIP call connections to the UA who first make the conference for establishing media session.

• Fashion & Textile Research Journal
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• v.25 no.3
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• pp.333-345
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• 2023

The rising demand for fashion do-it-yourself (DIY) products that cater to individual preferences and which allow for creative expression has highlighted the need for systematic organization within the clothing society. This study addresses this gap by identifying and discussing clothing DIY packages and proposes a systematic package model comprising essential raw materials, commercial patterns, and production instructions. Four key elements have been emphasized to differentiate and enhance the product. Firstly, highly practical commercial patterns have been developed to facilitate easy transformations - from blouses to dresses. Furthermore, the versatility of these patterns has been optimized so as to allow their utilization as outerwear, increasing their efficiency. Secondly, to accommodate diverse body shapes, the package offers six different sizes, providing users with a range of options tailored to their specific measurements. Thirdly, detailed production instructions are provided, supplemented by a Q&A bulletin board. The instructions are available in a printed format, featuring actual photographs on A4 paper, while video production instructions are accessible via a QR code, ensuring comprehensive guidance. Lastly, the basic package comprises clothing patterns, production instructions, fabrics, and labels, providing a complete toolkit for clothing DIY enthusiasts. This study aims to contribute to the development of the hobby sewing field and to establish a practical resource for the clothing DIY package industry.

• Journal of the Korean Society for Library and Information Science
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• v.54 no.4
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• pp.261-281
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• 2020

The importance of long-term preservation of various types of electronic records through dark archives is gradually increasing. However, the current dark archive does not have an optimized information package structure for long-term preservation of electronic records. In order to address these problems, this research proposed four element categories by re-organizing the OAIS reference model information package based on the core process of the dark archiving. The detailed descriptive items of each category consist of a total of 4 upper-level elements and 27 sub elements based on the OAIS reference model, ISO 23081, Records Management Metadata Standard, ISAD(G), ISAAR(CPF), ISDF, and ISDIAH. This structure can be used as a basis for constructing an information package optimized for dark archiving, and is expected to support the long-term preservation of electronic records more efficiently.