Jiann-Gwo Doong

Secured Operation Planning on Service Networks

Planning Internet-based applications services such as telephony, requires a variety of components to ensure the quality of services, for instances, user identification, authentication, authorization, registration, accounting, routing, gateway discovery, directory service, signaling, etc. Two protocols have emerged to provide these functions, H.323 series of recommendations by ITU-T, and session initiation protocol (SIP) by multi-party multimedia session control working group, IETF. SIP is a call processing protocol. It is used to create sessions carry session descriptions which allow participants to agree on a set of compatible media types. SIP supports user mobility by proxying and redirecting requests to the users current location. Users can register their current location as well. The session may be multimedia conference, or point-point telephone call. SIP is not dependent upon any particular conference control protocol, such as H323, and it does not define any method of transporting the session traffic. All the major SIP traffics, management and services will be handled by SIP proxy, redirect and registrar servers. The servers play very important roles in the SIP network. The resources for servers might become a bottleneck for the SIP network, although the SIP is lightweight for being a signaling protocol and companies and organizations have just developed some SIP related services, it still has many virgin lands to be dig out. But before an SIP network service is planned and implemented, one major concern the SIP service providers care the most, is how good (or bad) the service performance is going to be under various circumstance. In other words, they are trying to get more understanding about the network performance impacts as a whole, when certain type of traffic surge due to a particular event for instance, or when a portion of route gets blocked due to a network problem, etc. This research tries to establish a network planning model that simulates normal operations of an SIP network. Based on this model, a variety of multimedia traffic is supported. In addition, the research implements a convenient Web-based tool to analyze the performance of respective network elements in a simulated SIP environment and under different configurations and scenario setups. The tool supports VoIP (voice over Internet protocol) traffic types initially. The user can input the desired traffic types, volumes and distributions, and configure the simulation scenario through the friendly input format from any client.

ONTOAPP: AN ONTOLOG APPLICATION ON SOLVING SOME HETEROGENEOUS PROBLEMS OF HEALTHCARE INFORMATION SHARING AND INTEROPERABILITY

The development and the civil enterprises are complex, interdisciplinary public policy issues, which reveal the cooperative and competitive processes, and explain the social mobilization. The mobilization for civil enterprises is a function of the emergency, and of the ability of certain social agents to include the vision of many, to achieve the common goal. The paper presents a social mobilization model to support the establishing of civil enterprises, and the formalization of competences in complex social networks, which is based on action research in a cooperative venture, located in the State of Minas Gerais (Brazil). The method used highlights the social mobilization and the complex networks, which are formed from civil enterprises, and its role in the process of land organization and the promotion of regional development.

Implementation and Design of a Middleware Platform Based on WCF

With the advances in computing and communication technologies, message-oriented middleware becomes an important and universal tool in enterprises nowadays. WCF (Windows Communication Foundation) exploits a loosely coupled way that client-side and server-side can accelerate the development and operation. Although, WCF contains most of lower-layer communication components. However, under specific applications, developers unavoidably develop extra connection functions and client-to-serve managing software in practice. Because of the practical need, we prepare to construct a WCF-based middleware operational prototype for future research reference. In this study, we build up a practical prototype of middleware to integrate with heterologous systems using WCF for accumulating our experience on cross-platform systems. The implementation includes developing specific APIs (Application Program Interface) of middleware for the system requirement, achieving middleware with broadcast functions to complete information-exchange between two specific functions within WCF. Our enhanced WCF framework supports a lots of flexibility in APIs. Developers do not need to modify any of the underlying WCF components, and unrestrictedly customize the API attributes and API logic.

Step-Locked Data Transformation in Personal Filing Systems

In comparison with the internal representation of a personal filing systems, which is operational more efficient, the filing organization as presented to the users has its simplicity because it maintains only a single type of link. Therefore, the implementation of the system can have two models which represent the folder organization at two different levels: the user interface level (or the representation using U-ORG), and the system execution level (or the internal representation using I-ORG). Inter operabilities between the two models needs to be well-coordinated and kept transparent to the user while the system optimizes its performance by utilizing the architectural strength from both models. In this paper, we explore the co-existence issues between the U-ORG and the I-ORG folder organization and present a preliminary transformation process which transforms the given U-ORG into an IORG representation when the user folder organization is constructed.

ON SOLVING SOME HETEROGENEOUS PROBLEMS OF HEALTHCARE INFORMATION SHARING AND INTEROPERABILITY USING ONTOLOGY COMPUTING

A Clinical Information System (CIS) (or interchangeably, called Healthcare Information System (HIS)) is usually implemented using a Windows-based client-and-server architecture. The development of this system relies heavily on the use of a medical database as a backend and a graphic user interface (GUI) for data input and output as a frontend. The data in the frontend consists of multiple GUI’s fields of various forms, which compose structured data and free-text medical reports on patients. These free text medical reports are mostly made of the complicated part of unstructured text data. Usually, the free-text medical reports include reports on patient intake, examination, and discharge, which could be an input from a keyboard, a handwriting device, a voice microphone, transcription service or others. All the data, including structured and unstructured data, are stored in the backend database. Generally a relational database (RDB) is adopted and its schema was well designed by applying normalization rules so that a flat data view in GUI is implemented with multiple tables and constraints to maintain the data integrity and consistency.

Document Filing Approaches Using an Internal Based Folder Organization

This paper proposes a Rooted Direct Acyclic Graph (RDAG) represented internal folder organization which supplements the architectural deficiencies of the existing user folder organization, to electronically model a person’s filing system in the modern working environment. An internal folder organization gives a logical representation of how documents of the same or different kinds are related and grouped into folders based on predefined premises. Each node in the graph represents a folder; and folders are related by “subfolder relationship” (for capturing the “and” relation) and “virtual-folder relationship” (for capturing the “or” relation). Each folder in the organization has a criterion, specifying in terms of a local predicate, which governs the document filing for that folder. The paper also investigates how the new model demonstrates its architectural support in filing - It improves the performance of document distribution.