• Title/Summary/Keyword: inheritance element

Search Result 19, Processing Time 0.021 seconds

A study of morphism to the external inheritance (외부 상속의 다형형 연구)

  • Park, Sangjoon;Lee, Jongchan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2021.10a
    • /
    • pp.545-546
    • /
    • 2021
  • In this paper, we consider the morphism of inheritance in SR DEVS. The property of determination occurring in the inheritance can be non-deterministic. In this case the process can be implemented for the inheritnace determination through the morphism. The final determination of morphism might be changed as the environments. To the morphsim, it is not the appearance of new element, but the selection is processed in current elements.

  • PDF

Theoretical Validation of Inheritance Metric in QMOOD against Weyuker's Properties

  • Alharthi, Mariam;Aljedaibi, Wajdi
    • International Journal of Computer Science & Network Security
    • /
    • v.21 no.7
    • /
    • pp.284-296
    • /
    • 2021
  • Quality Models are important element of the software industry to develop and implement the best quality product in the market. This type of model provides aid in describing quality measures, which directly enhance the user satisfaction and software quality. In software development, the inheritance technique is an important mechanism used in object-oriented programming that allows the developers to define new classes having all the properties of super class. This technique supports the hierarchy design for classes and makes an "is-a" association among the super and subclasses. This paper describes a standard procedure for validating the inheritance metric in Quality Model for Object-Oriented Design (QMOOD) by using a set of nine properties established by Weyuker. These properties commonly using for investigating the effectiveness of the metric. The integration of two measuring methods (i.e. QMOOD and Weyuker) will provide new way for evaluating the software quality based on the inheritance context. The output of this research shows the extent of satisfaction of the inheritance metric in QMOOD against Weyuker nine properties. Further results proved that Weyker's property number nine could not fulfilled by any inheritance metrics. This research introduces a way for measuring software that developed using object-oriented approach. The theoretical validation of the inheritance metric presented in this paper is a small step taken towards producing quality software and in providing assistance to the software industry.

2D-THI: Two-Dimensional Type Hierarchy Index for XML Databases (2D-THI: XML 데이테베이스를 위한 이차원 타입상속 계층색인)

  • Lee Jong-Hak
    • Journal of Korea Multimedia Society
    • /
    • v.9 no.3
    • /
    • pp.265-278
    • /
    • 2006
  • This paper presents a two-dimensional type inheritance hierarchy index(2D-THI) for XML databases. XML Schema is one of schema models for the XML documents supporting. The type inheritance. The conventional indexing techniques for XML databases can not support XML queries on type inheritance hierarchies. We construct a two-dimensional index structure using multidimensional file organizations for supporting type inheritance hierarchy in XML queries. This indexing technique deals with the problem of clustering index entries in the two-dimensional domain space that consists of a key element domain and a type identifier domain based on the user query pattern. This index enhances query performance by adjusting the degree of clustering between the two domains. For performance evaluation, we have compared our proposed 2D-THI with the conventional class hierarchy indexing techniques in object-oriented databases such as CH-index and CG-tree through the cost model. As the result of the performance evaluations, we have verified that our proposed two-dimensional type inheritance indexing technique can efficiently support the query Processing in XML databases according to the query types.

  • PDF

MD-TIX: Multidimensional Type Inheritance Indexing for Efficient Execution of XML Queries (MD-TIX: XML 질의의 효율적 처리를 위한 다차원 타입상속 색인기법)

  • Lee, Jong-Hak
    • Journal of Korea Multimedia Society
    • /
    • v.10 no.9
    • /
    • pp.1093-1105
    • /
    • 2007
  • This paper presents a multidimensional type inheritance indexing technique (MD-TIX) for XML databases. We use a multidimensional file organization as the index structure. In conventional XML database indexing techniques using one-dimensional index structures, they do not efficiently handle complex queries involving both nested elements and type inheritance hierarchies. We extend a two-dimensional type hierarchy indexing technique(2D-THI) for indexing the nested elements of XML databases. 2D-THI is an indexing scheme that deals with the problem of clustering elements in a two-dimensional domain space consisting of the key value domain and the type identifier domain for indexing a simple element in a type hierarchy. In our extended scheme, we handle the clustering of the index entries in a multidimensional domain space consisting of a key value domain and multiple type identifier domains that include one type identifier domain per type hierarchy on a path expression. This scheme efficiently supports queries that involve search conditions on the nested element represented by an extended path expression. An extended path expression is a path expression in which every type hierarchy on a path can be substituted by an individual type or a subtype hierarchy.

  • PDF

Development of an Object-oriented Finite Element Model through Iterative Method Ensuring Independency of Elements (요소 독립성이 유지되는 반복해법에 의한 객체지향 유한요소모델 개발)

  • Lee, Han-Ki;Kim, Tae-Gon;Lee, Jeong-Jae
    • Journal of The Korean Society of Agricultural Engineers
    • /
    • v.54 no.2
    • /
    • pp.115-125
    • /
    • 2012
  • Application of the Object-oriented Programming (OOP) method to the Finite Element Model (FEM) program has various strengths including the features of encapsulation, polymorphism and inheritance. However, this technique should be based upon a premise that the independency of the object method and data to be used is guaranteed. By attempting to apply the OOP to the FEM, existing researches go against the independency of the OOP which is an essential feature of the method. The reason is this: existing researches apply the OOP to modules in accordance with analysis procedures, although the data to be used is classified as an element unit in the FEM. Therefore, the required independency cannot be maintained as whole stiffness matrices and boundary conditions are combined together. Also, solutions are sought from analysis module after data is regrouped at the pre-processor, and their results are analyzed during the post-processor. As this is similar to a batch processing, it cannot use data at analysis, and recalculation should be done from the beginning if any condition is changed after the analysis is complete, which are limitations of the existing researches. This research implemented the Object-orientation of elements so that the three features of the OOP (i.e. encapsulation, polymorphism and inheritance) can be guaranteed and their independency maintained as a result. For this purpose, a model called 'Object-oriented Finite element Model ensuring the Independency of Elements (OFMIE)', which enables the analysis of targets through mutual data exchanges within instance, was developed. In conclusion, the required independency was achieved in the instance of the objected elements and the analysis results of previous conditions could be used for the analysis after changes. The number of repetitive calculations was reduced by 75 per cent through this gradual analysis processes.

A Study on the Living Environment Organization System in Traditional Village - In the case of the Sugok-dong in the Imha Dam Flooded Area - (전통마을 생활환경 구성체계와 주생활 특성에 관한 연구 - 임하댐 수몰지역의 수곡동을 대상으로 -)

  • 정준현
    • Journal of the Korean housing association
    • /
    • v.1 no.1
    • /
    • pp.65-76
    • /
    • 1990
  • Sugok Villiage. of the prospective flooded villiages for building Im Ha Dam, is selected as the studied place. Primarily, the purpose of this study is invested, recerded about traditional living environment, and then searched to find out possibilites on the context of the inheritance of analyzing about life contents and space. The result of this study are as follows:1) In composition of living environment, thinking view on confucianism and living view on folk beliefs are considered as important element2) Hierarchy of life environment is appeared of above and below space.(focused on JONG KA) and inner and outer space(boarded on pine forest) on the other hand according to living territory life environment can be divided into five territories.3) Confucian ideas, social status, folk beliefs and economics has been affected about formation of individual life. Accordingly, I believe that true inheritance of traditional culture was, through preserving mental contents as well as physical contents, possible.

  • PDF

XML Type Inheritance Index Hierarchies for Supporting Ancestor-descendant Exploration (조상-자손 관계 탐색을 지원하기 위한 XML 타입상속 색인구조의 계층적 구성기법)

  • Lee, Jong-Hak
    • Journal of Korea Multimedia Society
    • /
    • v.15 no.9
    • /
    • pp.1133-1148
    • /
    • 2012
  • This paper presents a hierarchical structuring method for the multidimensional type inheritance indices (MD-TIXs) that support the processing of XML queries in XML databases. MD-TIX uses a multidimensional index structure for efficiently supporting ancestor-descendant explorations that involve both nested element and type inheritance hierarchies. However, In the case of a long Xpath, the building and maintenance of MD-TIX are very difficult because of index entry construction problem. So, we propose a type inheritance index hierarchy method for solving this difficulty. We first construct base indices that support direct relationship explorations between adjacent two types on a given Xpath, and then, based on these base indices, we construct hierarchically the derived indices that support indirect relationship explorations between any two types of Xpath until constructing one target index for supporting the full Xpath. And we also present an algorithm that efficiently constructs a partial index hierarchy for supporting given a set of sub-pathes explorations.

Object-Oriented Free Vibration Analysis of Plane Flamed Structures (평면 뼈대 구조물의 객체지향 자유진동해석)

  • 신영식;최희옥;서진극
    • Proceedings of the Computational Structural Engineering Institute Conference
    • /
    • 1993.04a
    • /
    • pp.61-68
    • /
    • 1993
  • A computer program for free vibration analysis of plane framed structures has been developed by object oriented programming technique using C" language. The object oriented programming concepts such as object, class, method and inheritance are represented. The static and free vibration analyses for framed structures were satisfactorily performed by this program which consists of TOP, VECTOR, MATRIX, STRU, GUI and other classes. Numerical test shows the validity and capability of the present study which can be expandable to develop a general purpose object oriented finite element analysis program of structures ,res ,

  • PDF

An Assignment Method of Multidimensional Type Inheritance Indexes for XML Query Processing (XML 질의처리를 위한 다차원 타입상속 색인구조의 할당기법)

  • Lee, Jong-Hak
    • Journal of Korea Multimedia Society
    • /
    • v.12 no.1
    • /
    • pp.1-15
    • /
    • 2009
  • This paper presents an assignment method of the multidimensional type inheritance indexes (MD-TIXs) to support the processing of XML queries in XML databases. MD-TIX uses a multidimensional index structure for efficiently supporting nested predicates that involve both nested element and type inheritance hierarchies. In this paper, we have analyzed the strategy of the query processing by using the MD-TIXs, and presented an assignment method of the MD-TIXs in the framework of complex queries, containing conjunctions of nested predicates, each one involving an Xpath having target types or domain types substitution. We first consider MD-TIX operations caused by updating of XML data-bases, and the use of the MD-TIXs in the case of a query containing a single nested predicate. And then, we consider the assignments of the MD-TIXs in the framework of more general queries containing nested predicates over overlapping paths that have common subpaths.

  • PDF

Study on the environment design element of Japan subway station wall - Laying stress on techniques of ceramic mural that is manufactured in 2000 years - (일본 지하철 역 벽면의 환경디자인 요소에 관한 연구 - 2000년도에 제작된 도자 벽화의 기법을 중심으로 -)

  • 이병수
    • Proceedings of the Korean Institute of Interior Design Conference
    • /
    • 2003.05a
    • /
    • pp.170-173
    • /
    • 2003
  • Because effect about environmental effect that get to human visually is absolute, ability that mural of subway interior considers relation with space is required. Also, public environment element should be designed must intend agreeableness sex by same traitor effect of quality of the material and color and can be evaluated by cultural inheritance that is powerful enemy same time. Wish to accomplish access as meaning of city environment improvement of wall of subway station or underground space etc. through Japan course South Korea's illustration regarding environment landscaping features that is designed in wall of latest domestic building subway interior in this research. Various and new reading by that study and analyze manufactured wall environment landscaping features recently that could find and was approached in variouser technique, practical use of material than single material and is expressed according to history's special quality and planning know can. Underground space can give agreeableness feel and psychological sense of security by user though expression method, material, color plan etc. consist because is having image blockade enemy. Therefore, wall environment landscaping features of underground space to be cultural value and environment Dija because diversified research that is accompanied in element is gone subway interior space of our country and underground space etc. as new culture space develop be able to must.

  • PDF