A New Approach to the Communication of the Distributed Collaborative System Based on COM+

Remote Communication ◽

New Approach ◽

Windows Nt ◽

Loosely Coupled ◽

Collaborative System ◽

Complex Architecture

In this paper COM+ based on Microsoft .NET is adopted to realize a Distributed Collaborative System (DCS). This system adopts a complex architecture combined C/S with B/S to reduce the remote communication and improve the performance. By means of IE or other browsers, a client can download client tool, register or login, search or publish information via the collaborative website. After installing the client tool, a client can automatically receive the collaborative requests or invitations from the collaborative server and collaborate with other participators. The system utilizes COM+ services to realize the Distributed Synchronous Communication (DSC) and Distributed Asynchronous Communication (DAC). Loosely Coupled Event (LCE) service can make DSC true easily and effectively. Transaction service, Queued Component (QC) service and Windows NT Service can be applied to realize DAC efficiently and reliably.

Canadian Journal of Learning and Technology / La revue canadienne de l’apprentissage et de la technologie ◽

The Interplay of Content and Community in Synchronous and Asynchronous Communication: Virtual Communication in a Graduate Seminar

10.21432/t20k64 ◽

2002 ◽

Vol 28 (2) ◽

Cited By ~ 8

Author(s):

Richard A. Schwier ◽

Shelly Balbar

Keyword(s):

Sense Of Community ◽

Bulletin Board ◽

Virtual Communication ◽

Graduate Seminar ◽

Different Types ◽

Group A ◽

The University ◽

Intellectual Limitations

A group of graduate students and an instructor at the University of Saskatchewan experimented with the use of synchronous communication (chat) and asynchronous communication (bulletin board) in a theory course in Educational Communications and Technology for an eight-month period. Synchronous communication contributed dramatically to the continuity and convenience of the class, and promoted a strong sense of community. At the same time, it was viewed as less effective than asynchronous communication for dealing with content and issues deeply, and it introduced a number of pedagogical and intellectual limitations. We concluded that synchronous and asynchronous strategies were suitable for different types of learning, and what we experienced was a balancing act between content and community in our group. A combination of synchronous and asynchronous experiences seems to be necessary to promote the kind of engagement and depth required in a graduate seminar.

Adaptive Web Services for Modular and Reusable Software Development - Advances in Web Technologies and Engineering ◽

Service Discovery and Composition Based on Contracts and Choreographic Descriptions

10.4018/978-1-4666-2089-6.ch003 ◽

2012 ◽

pp. 60-88

Author(s):

Mario Bravetti ◽

Gianluigi Zavattaro

Keyword(s):

Service Discovery ◽

Operational Semantics ◽

Transition Systems ◽

Service Contracts ◽

Contract Compliance ◽

Service Oriented ◽

Labeled Transition System ◽

Contract Language

The authors discuss the interplay between the notions of contract compliance, contract refinement, and choreography conformance in the context of service oriented computing, by considering both synchronous and asynchronous communication. Service contracts are specified in a language independent way by means of finite labeled transition systems. In this way, the theory is general and foundational as the authors abstract away from the syntax of contracts and simply assume that a contract language has an operational semantics defined in terms of a labeled transition system. The chapter makes a comparative analysis of synchronous and asynchronous communication. Concerning the latter, a realistic scenario is considered in which services are endowed with queues used to store the received messages. In the simpler context of synchronous communication, the authors are able to resort to the theory of fair testing to provide decidability results.

Directly and Indirectly Synchronous Communication Mechanisms for Client-Server Systems Using Event-Based Asynchronous Communication Framework

IEEE Access ◽

10.1109/access.2019.2924497 ◽

2019 ◽

Vol 7 ◽

pp. 81969-81982

Author(s):

Mingyu Lim

Keyword(s):

Client Server ◽

Communication Framework ◽

Server Systems ◽

Event Based

Pervasive Personal Healthcare Service Designed as Mobile Social Network

International Journal of Interactive Mobile Technologies (iJIM) ◽

10.3991/ijim.v10i4.5913 ◽

2016 ◽

Vol 10 (4) ◽

pp. 65 ◽

Cited By ~ 3

Author(s):

Vanja Miskovic ◽

Djordje Babic

Keyword(s):

Social Network ◽

Mobile Networks ◽

Web Application ◽

Healthcare Service ◽

Body Sensor Networks ◽

Mobile Social Network ◽

Personal Healthcare ◽

Number Of Patients

A global phenomenon of population ageing and an increasing number of patients with chronic diseases place substantial additional pressure on healthcare systems. A possible solution for this problem is a new emerging sort of pervasive personal healthcare service that is focused on the patient and allows the patient to be actively involved in his or her own health care. In this paper, we propose the architecture of the pervasive personal healthcare service which is based on the existing technologies available to almost everyone. Along with the conventional request-response synchronous communication, the proposed system features asynchronous communication based on publish-subscribe-notify model. In order to perform asynchronous communication, a web application server is integrated with the Google Cloud Messaging service. The communication between mobile device and servers is carried out through the available Wi-Fi or mobile networks, whereas Bluetooth protocol is conventional for Body Sensor Networks consisting of wearable sensor devices. We also present a mobile application which has been developed with use-case driven approach for both patients and medical personnel. The introduced application has a form of a nonintrusive customized mobile social network. We explain usage scenarios that clarify the required functions and present conclusions based on the system test.

Synchronous and Asynchronous Communication Systems

Encyclopedia of Networked and Virtual Organizations ◽

10.4018/978-1-59904-885-7.ch210 ◽

2011 ◽

pp. 1587-1596

Author(s):

António D. Reis ◽

José F. Rocha ◽

Atilio S. Gameiro ◽

José P. Carvalho

Keyword(s):

Communication Systems ◽

Transmission Mode ◽

Telecommunication System ◽

Significant Aspect ◽

Telecommunication Systems ◽

Transmission Technique ◽

Asynchronous Transmission ◽

External Clock

This article talks generically about telecommunication systems. A telecommunication system involves a transmitter, a transmission medium, and a receiver. The type of communication between the transmitter and the receiver can be the synchronous transmission mode or the asynchronous transmission mode. Synchronous communication is sending data with synchronization to an external clock. The most significant aspect of synchronous communication is that the transmitter and receiver clocks are dependent and synchronized. The synchronous communication is a transmission technique that is widely used in telecommunications. Asynchronous communication is sending data without synchronization to an external clock. The most significant aspect of asynchronous communication is that the transmitter and receiver clocks are independent and are not synchronized. The synchronous communication is a transmission technique, which is widely used in personal computers, providing connectivity to printers, modems, fax machines, and so forth.

Performance Evaluation and Comparison of Distributed Messaging Using Message Oriented Middleware

Computer and Information Science ◽

10.5539/cis.v7n4p9 ◽

2014 ◽

Vol 7 (4) ◽

pp. 9 ◽

Cited By ~ 5

Author(s):

Sanjay P. Ahuja ◽

Naveen Mupparaju

Keyword(s):

Open Source ◽

Enabling Technology ◽

Enterprise Integration ◽

Message Oriented Middleware ◽

Point To Point ◽

The Right ◽

Work Done ◽

Source Message

Message Oriented Middleware (MOM) is an enabling technology for modern event-driven applications that are typically based on publish/subscribe communication (Eugster, 2003). Enterprises typically contain hundreds of applications operating in environments with diverse databases and operating systems. Integration of these applications is required to coordinate the business process. Unfortunately, this is no easy task. Enterprise Integration, according to the authors in (Brosey et al, 2001), "aims to connect and combines people, processes, systems, and technologies to ensure that the right people and the right processes have the right information and the right resources at the right time”. Communication between different applications can be achieved by using synchronous and asynchronous communication tools. In synchronous communication, both parties involved must be online (for example, a telephone call), whereas in asynchronous communication, only one member needs to be online (email). Middleware is software that helps two applications communicate with one another. Remote Procedure Calls (RPC) and Object Request Brokers (ORB) are two types of synchronous middleware—when they send a request they must wait for an immediate reply. This can decrease an application’s performance when there is no need for synchronous communication. Even though asynchronous distributed messaging using message oriented middleware is widely used in industry, there is not enough work done in evaluating the performance of various open source Message oriented middleware. The objective of this work was to benchmark and evaluate three different open source MOM’s performance in publish/subscribe and point-to-point domains, and provide a functional comparison and qualitative study from developers perspective.

Whole genome optical mapping reveals multiple fusion events chained by large novel sequences in cancer

10.1101/166173 ◽

2017 ◽

Author(s):

Eva K.F. Chan ◽

Desiree C. Petersen ◽

Ruth J. Lyons ◽

Benedetta F. Baldi ◽

Anthony T. Papenfuss ◽

...

Keyword(s):

Optical Mapping ◽

Genome Mapping ◽

Human Cancer ◽

Whole Genome ◽

Sequencing Data ◽

New Approach ◽

Genome Maps ◽

Genomic Regions ◽

Complex Architecture ◽

Whole Genome Mapping

AbstractGenomic rearrangements are common in cancer, with demonstrated links to disease progression and treatment response. These rearrangements can be complex, resulting in fusions of multiple chromosomal fragments and generation of derivative chromosomes. While methods exist for detecting individual fusions, they are generally unable to reconstruct complex chained events. To overcome these limitations, we adopted a new optical mapping approach, allowing for megabase length DNA to be captured, and in turn rearranged genomes to be visualized without loss of integrity. Whole genome mapping (Bionano Genomics) of a well-studied highly rearranged liposarcoma cell line, resulted in 3,338 assembled haploid genome maps, including 101 fusion maps. These fusion maps represent 175 Mb of highly rearranged genomic regions, illuminating the complex architecture of chained fusions, including content, order, orientation, and size. Spanning the junction of 151 chromosomal translocations, we found a total of 32 Mb of novel interspersed sequences that were not detected from short-read sequencing. We demonstrate that optical mapping provides a powerful new approach for capturing a higher level of complex genomic architecture, creating a scaffold for renewed interpretation of sequencing data of particular relevance to human cancer.

Modeling Communication in Multi–Processor Systems–on–Chip Using Modular Connectors

International Journal of Embedded and Real-Time Communication Systems ◽

10.4018/jertcs.2010040102 ◽

2010 ◽

Vol 1 (2) ◽

pp. 23-44 ◽

Cited By ~ 1

Author(s):

Leonidas Tsiopoulos ◽

Kaisa Sere ◽

Juha Plosila

Keyword(s):

Formal Methods ◽

Concurrent Programming ◽

New Approach ◽

Action Systems ◽

Modeling Methodology ◽

Distributed Framework ◽

Systems On Chip ◽

On Chip

Formal methods of concurrent programming can be used to develop and verify complex Multi–Processor Systems–On–Chip in order to ensure that these systems satisfy their functional and communication requirements. The authors use the Action Systems formalism and show how asynchronous communication of Multi–Processor Systems–on–Chip can be modeled using generic connectors composed out of simple channel components. The paper proposes a new approach to modeling generic and hierarchical connectors for handling the complexity of on–chip communication and data flow. The authors’ goal is to avoid overloaded bus–based architectures and give a distributed framework. A case study presents the authors’ modeling methodology.