• Asia pacific journal of information systems
• /
• v.7 no.3
• /
• pp.167-180
• /
• 1997

Data semantics is an well recognized issue in areas of information systems research. It provides indispensable information for management of data, It describes what data mean, how they are created, where they can be applied to, to name a few. Because of these diverse nature of data semantics, it has been described from different perspectives of formalization. This article proposes to formalize data semantics by the processes that data are created or transformed, A scheme is proposed to describe the structure that data are created and transformed, which is called Bill of Data. Bill of Data is a directed graph, whose leaves are primary input data and whose internal nodes are output data objects produced from input data objects. Using Bill of Data, algorithms are developed to compare data semantics.

• Nuclear Engineering and Technology
• /
• v.4 no.3
• /
• pp.229-240
• /
• 1972

Radioisotopes and their related techniques have recently been applied for scientific conservation works of cultural property and resulted many excellent findings or conservation data which could never be achieved by means of other techniques. Radiocarbon dating have widely been applied for dating the antique of organic origin, whereas the determination of radioactive contents in metal, ceramics, environmental soil, and classical objects could be able to afford many useful informations on the age, genuiness, and archeological significances as it had been produced. Trace quantity of contents of each antique have successfully been analyzed by means of radioactivation analysis or radio active tracer techniques, which could afford important technical data and results for tile conservation of each object. Radiography have also been applied for detecting the internal defects of metal objects and furthermore $\beta$-and ${\gamma}$-ray radiography were proved to be effective for such thin material as textile, painting, and fibres. In this article the detailed principle and procedures of each technique were presented so that the society could be able to make efforts to familiarize all concerns with these modern trends of the conservation techniques of cultural property.

• Asia pacific journal of information systems
• /
• v.6 no.1
• /
• pp.223-240
• /
• 1996

The paper proposes an approach, called OPNets, for modeling and validating manufacturing systems that is based on object-oriented high-level Petri nets. In OPNets, modeling components of Petri net are constructed into hierarchical objects that communicate with each other by passing messages. To enhance the reusability and maintainability, OPNets organizes a system into hierarchical objects that inherit attributes and behavioral properties from the object of super class and object-interaction relations are separated from the internal structure of object. The modeling scheme of OPNets tries to resolve the complexity problems of Petri net. To illustrate the modeling schemes of OPNets, a storage/retrieval example has been proposed.

• Journal of the Korea Computer Industry Society
• /
• v.3 no.2
• /
• pp.243-258
• /
• 2002

The web-based multimedia development tool was implemented to create and edit multimedia contents under the graphic user interface environment with icons. The development process enables the developers to verify the contents being developed by checking for errors, exchanging feedbacks and utilizing the pre-execution feature. By applying the tree structure to the internal data format, the tool uses inherent display features among media objects with time and spatial relations to efficiently process the synchronism of media objects that participate in the presentation and asynchronism according to user interaction.

• The Journal of Information Technology and Database
• /
• v.7 no.1
• /
• pp.55-65
• /
• 2000

Information semantics is a well-known issue in areas of information systems researches. It describes what data mean, how they are created, where they can be applied to ; thus, it provides indispensable information for management of data. This article proposes to formalize information semantics by the processes that data are created or transformed. A scheme is proposed to describe an information production structure, which is called an information structure graph. An information structure graph is a directed graph, whose leaves are primary input data objects and whose root and internal nodes are output objects. Information semantics is derived from an information structure graph that has data as its root. For this, rules are proposed to manipulate and compare graphs. The structural relationships among information structure graphs are mapped into semantic relationships among data.

• Journal of the Institute of Convergence Signal Processing
• /
• v.12 no.2
• /
• pp.83-90
• /
• 2011

In cell biology area, microscopy enables detecting objects inside cells that are stained or fluorescently tagged. It is disadvantageous for observing these objects because of the noisy characteristics of their environmental surrounding. In this paper, a framework is proposed to increase the throughput and reliability for analysis of these images. First, we apply adaptive beamlet transform to extract edges meaningfully followed by orientation, location, and length in different scales. Then, a post-process is implemented to extend and map them onto original image. Our proposed scheme is compared with Canny edge detector and conventional beamlet transform from four evaluation aspects. It produces better results when experiments are conducted on real images. Much better results for observing internal parts make this framework competitive for analysis of cell images.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2021.10a
• /
• pp.547-548
• /
• 2021

In this paper, we consider inner inheritance of parent objects to their child objects in SR DEVS. The inheritance process of function is implemented by the inside inheritance function when the inherited parent object is determined. In the inside inheritance, the integrity and fragment inheritance can be divided as th asset property. Also, the function process is requested when the inheritance selection in th inheritance is occurred to several assets. The child object can receive assets from the parent object through the determination method of selection function to the inside inheritance.

• Tuberculosis and Respiratory Diseases
• /
• v.43 no.1
• /
• pp.108-112
• /
• 1996

Bronchial foreign body aspirations are uncommon in adults and usually have various underlying conditions, otherwise accidentally occurred in dental procedure, medical, surgical procedure. The most commonly aspirated objects were food materials, with peanuts leading the list. When bronchial foreign body was aspirated, no definite respiratory symptoms or foreign body is may not seen, then diagnosis is delayed. Therefore late complications was developed. The tendency to use fiberoptic bronchoscope for removal of foreign bodies in adults is increased. We report a rare case of bronchial pneumonia due to occult aspiration of a twig before 1 year with a review of the literatures.

• Journal of Families and Better Life
• /
• v.11 no.1
• /
• pp.67-79
• /
• 1993

The purpose of this study were to study the relationships of the locus of control and the frustration reaction of adolescents according to their family-environment. The objects are 369 students in the second grade of middle schools located in Kwangju and Chonnam. The instruments used in this study are "Internal-External locus of control scale for students" (the Nowicki and Strickland's scale translated by Jung Eun-Joo and Son Jin-Hoon) " Picture-Frustration Test" (by Kim Jae Eun and Kim Tai Ryun) The data is produced on frequency distribution percentile average standard deviation F-test Pearson's correlation with SAS computer program. The results are as follows: 1) The internal -external locus of control shows significant differences in the location sex. the number of siblings family pattern father's educational level and mother's occupation. 2) The reaction type for frustration shows statistically significant differences in accordance with their sex the number of siblings birthorder fathers grown-up place parents' age and parents' occupation. 3) The direction of aggression for frustration shows significant difference in according with the location sex the number of siblings birth order family pattern parents' grown-up place and father's educational level. 4) According to the internal-external locus of control the frustration reaction scores are different significantly. Internal adolescents have positive relation with Need-Persistance and Impunitiveness and negative relation with Obstade-Dominance and Extrapunitiveness.

• Journal of the Korean Society for Precision Engineering
• /
• v.25 no.3
• /
• pp.157-164
• /
• 2008

While developing physical prototype from CAD model, rapid prototyping mainly focuses on two key points reducing time and material consumption. So, we have to change from a traditional solid model to building a hollowed prototype. In this paper, a new method is presented to hollow out solid objects with uniform wall thickness to increase RP efficiency. To achieve uniform wall thickness, it is necessary to generate internal contour by slicing the offset model of an STL model. Due to many difficulties in this method, this paper proposes a new algorithm that computes internal contours computing offset model which is generated from external contour using wall thickness. Proposed method can easily compute the internal contour by slicing the offset surface defined by the sum of circle swept volumes of external contours without actual offset and the circle wept volumes. Internal contour existences are confirmed by using the external point. Presented algorithm uses the 2D geometric algorithm allowing RP implementation more efficient. Various examples have been tested with implementation of the algorithm, and some examples are presented for illustration.