Building maintenance is gaining increased attention in the various fields of scientific research, Building information modelling (BIM) is used in the maintenance management and has helped facility... Show More

Building maintenance is gaining increased attention in the various fields of scientific research, Building information modelling (BIM) is used in the maintenance management and has helped facility management to handle a large volume of maintenance information, including drawings, specifications, lists and reports. BIM proved its effectiveness as a repository for various types of data in buildings maintenance and a tool to support decision making in maintenance. stepping the best decision at the facility is not only based on quantitative data but also on the knowledge and experience acquired by the company and the employees. this experience may be lost forever due to resignation and retirement if they are not documented. In this research work the authors provide a methodology for obtaining knowledge while performing maintenance of public buildings using BIM and DYNAMO applications, where parametric models provide us with a high-central frame for storing information and by adopting of visual programming, which provides great capabilities for processing, extraction, classification and the export of data from the BIM model to organize the knowledge management process extensively. This serves to facilitate decision-making through the BIM dependent knowledge base which helps to obtain and re-use of generated knowledge.

Volunteering is one of the various social activities that human societies have known and practiced since their inception. It is not the outcome of the last decades of the life of these societies... Show More

Volunteering is one of the various social activities that human societies have known and practiced since their inception. It is not the outcome of the last decades of the life of these societies, but it was present in almost every human civilization in its various forms and methods. Voluntary work is of great importance as far as individuals and societies are concerned. It is a symbol of solidarity among the members of the community and all its institutions. It positively affects people's lives as well as the community at large. It symbolizes the meanings of good, giving, and help. Accordingly, volunteering has become a cornerstone in building society and social cohesion among its members. In this regard, voluntary work is of great importance. It necessitates the need to spread this culture in the society and to promote and develop volunteerism among young people using all available and possible methods.

Communication through the internet is one of the dominant methods of exchanging information. TCP and UDP are the transport layer protocols responsible for transit of nearly all Internet... Show More

Communication through the internet is one of the dominant methods of exchanging information. TCP and UDP are the transport layer protocols responsible for transit of nearly all Internet communications. Due to the growth of real-time audio and video applications, UDP is being used more frequently as a transport protocol, but unlike TCP, UDP has no mechanism for congestion control leading to wasted bandwidth and poor performance, so the DCCP protocol has appeared as a replacement for UDP. In this article, the author performs some simulations using NS2 for Drop Tail and RED queuing models to evaluate the performance of TCP, UDP, DCCP CCID2, and DCCP CCID3 protocols in congested wired networks. The performance metrics used are throughput, end to end delay, number of sent and lost packets. The obtained results show that the DCCP CCID2 performs the best throughput with the minimum of delay as compared to UDP, TCP, and DCCP CCID3.

The issue of disability is one of the most important social issues in all human societies. Disability has become particularly important as a result of the statistics done by many international... Show More

The issue of disability is one of the most important social issues in all human societies. Disability has become particularly important as a result of the statistics done by many international organizations and bodies. These statistics have strikingly confirmed high rates of disabilities. It is worth noting that these high rates of disability are viewed as a real waste of human resources in the human society, where human resources are one of the most important elements of its development. Every child who is born in a family and diagnosed as a disabled child with one of the motor, mental, sensory or social disabilities makes changes in the social environment where he or she lives. The change starts in concepts and determinants of family members' understanding of the new situation.

Building maintenance is gaining an increasing attention in the various fields of scientific research and there was a need for the use of new technologies in maintenance management, as the facility... Show More

Building maintenance is gaining an increasing attention in the various fields of scientific research and there was a need for the use of new technologies in maintenance management, as the facility management deal with a large amount of information relating to maintenance, which includes drawings and specifications, lists, and reports, and the use of paper files leads to decrease the efficiency and create a shortage of data and information. The authors offer in this research tool to manage the maintenance process by using the BIM through linking deterioration models and three-dimensional model of the facility to be maintained and compensate the external investigation data for maintenance work in these models to get at the end of this research and with the help of the possibilities offered by Revit database to an upcoming maintenance items and arrange them according to their importance and impact on the facility and the estimated budget for the periodic maintenance and distribution of this budget on the various construction elements and the development of resources plan for next year.