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आयतन 5, मुद्दा 4 (2016)

शोध आलेख

Construction Performance Control in Steel Structures Projects

Rashid IA, Aboul Haggag SY, Mahdi I, Elhegazy HM

Steel structural projects are relatively special field of construction projects. The steel structure projects differ from conventional structural engineering projects mainly in the special problems that have to be considered during construction, transportation, installation and operation. The productivity improvements are attributed to the technology advances in equipment and construction methods over the last two decades. Steel structural projects are a relatively special field of construction projects. There are many factors that impact on productivity in this field. The construction industry especially the construction of steel structure projects is rated as one of the key industries. It helps in developing and achieving the goal of society. Study and knowledge of construction productivity are very important because they influence the economics of the construction industry; this is because prior knowledge of crew productivity during construction can save money and time. Investments for these projects are very high and because of the complexity in construction of steel structure projects, various factors can highly affect overall productivity, thus the project can end up adding even more time and money in order to be completed. The main purpose of this paper is present a methodology for modeling on Mat lab to construction performance control for construction process of steel structure based on the several factors that affect the steel structure processes. The Mat lab model is used for controlling on construction productivity of steel structure projects. The construction industry may use the findings of this paper as a basis for controlling and improving productivity and construction performance for the construction of steel structure projects. The ability of the estimating team to accurately determine productivity for different activities will have a significant impact on crew cost component, time schedule of the project and improve projects’ performance. The use of the Mat lab model is expected to result in savings in cost and time schedule of construction of steel structure projects as well as savings in the cost of the overall project.

समीक्षा लेख

A Review on Dicationic Ionic Liquids: Classification and Application

Asiah Nusaibah Masri, Abdul Mutalib MI and Jean-Marc Leveque

Dicationic ionic liquids are attractive new group of ionic liquids that acquire higher melting point, wider liquid range and better thermal stability. However, the exploration made on the utilization of these dicationic ionic liquids in any application is still limited. To the best of the author’s knowledge, this is the first review article that discuss about this new type of ionic liquids. This review describes about ionic liquids in general and gives a survey on the latest developments and progress concerning dicationic ionic liquids, from their classifications and properties to their employment in many applications.

शोध आलेख

EE-(m,k)-firm: Operations Management Approach In Enterprise Environment

Bechir Alaya

Task management is of a paramount importance because of the daily execution of more or less urgent and important tasks. In this paper, we propose a policy to indicate the necessary tasks and calculate their ranking, using a compromise between the available resources and the quality of service (QoS) granularity in the same task type. We applied a guaranteed technique in order to achieve an intelligent loss of tasks according to the importance of each task. A dynamicity of constraints was then used to attain an increase of availability, performance, reliability and system dependability. The results obtained from the proposed policy reveal that this type of policy can be extremely valuable for companies that wish to focus their efforts and resources to guarantee a satisfactory QoS for their clients.

शोध आलेख

The Beauty in Design - Aesthetics and Functions Caused by Combining Analogue with Digital Processing - Case Studies of Fashion Engineering and Automotive Design

Wachs ME, Bendt E, Kreuziger M, Brinkmann T, Dornbusch L, Scholl T, Krinner S, Detering N and Pfanzler L

Design attraction and design codes stands in relationship to function and strategy concepts in business cases of fashion as well as in automotive design. At the same time we are living in a design dominated world, which gets new inspirations by changing production processes from the fourth industrial revolution. Industry 4.0, that will transform design, operation, service, and manufacture of products. Generating design as “form follows function”, with the requirement, like Dieter Rams said, “less design as possible” shows the timeless reasonable fact of classic style with focussing the end of natural sources. The demand on the beauty in design will never end. But what does “Beauteousness” means in design in the year 2020? How to generate new or timeless beauty in design? How to implement consumers demand for a wider variety of increasingly customized products. The earlier definition of beauteousness during the renaissance time specified the term “beauteousness” in relationship to proportion, which had been measured with length in combination with the development of creating central perspective in art, to focus a harmonious balance of creative elements. Architects and theorists like Leon Batista Alberti defined a well proportion in balance, a harmony of elements to generate an ideal icon of beauty. During the 20s century architects like Sullivan and the Bauhaus school taught the beauty in design as forms related to timeless combinations of geometric forms. The modern times opened the possibility to get new impetus of the beauty in design, when ugly design gets attraction: Umberto Eco asked about the beauty in ugly phenomena with the help of his book “on Ugliness”, which inspired the fashion scene. Now, during the 21st century we have to consider that different parameters constructing beauty in design: sustainable requirements, bionic parameters and generated fashion are some examples. Beside the artistic and philosophical definition of beauteousness, the industrial process is creating beauty full forms: digital generating with special software allows to define new beauty full forms new beauty full codes in product design. And beside this, the generated design creates new functions. Today we know, that only the combination of thinking and doing, in analogue with digital processes will fashioning the future in all design disciplines.

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