Investigation of Hydraulic Performance of the Stairs Transitional Field (SEDEX PROFILE) on the Upper Slope Step overflow (Case Study: Jahve dam)
Kazem
Dalili khanghah
A graduate student in civil engineering, hydraulic engineering, water tended, Khajeh Nasir
University, Tehran, Iran
author
Mohammadreza
Kavianpuor
Associate Professor, Department of Water, Khaje Nasir-e-Din Tusi University, Tehran, Iran
author
text
article
2017
per
With the advancement of roller concrete dams (RCC) technology and stack overflow compatibility with these types of dams, stepped overflows have been used more than ever. Due to the complexity of hydraulic steppe overflows, many laboratory models have been developed and tested to achieve empirical relationships governing the flow of these types of overflows. To improve laboratory methods, we can use computational fluid dynamics (CFD) and numerical simulation based on it. In this paper, using the 3D-FLOW software (computational software based on computational fluid dynamics), flow behavior on the overflow of the Javew dam in two states with and without stepwise transitional area was investigated and by comparing the flow behavior in these two modes It was found that the CEDEX profile showed better performance than the no-transition mode and prevented water jumps on the stairs.
Journal of Engineering & Construction Management
Assist. Prof. Dr. Roohollah Taherkhani
۲۵۳۸-۱۹۰۳
2
v.
1
no.
2017
7
11
https://www.jecm.ir/article_51118_808a19ebfac84fb48a3d39dbc45c2aba.pdf
Determine the best place to implement groundwater artificial pond design by using two methods of boolean and AHP
Omid
Bagheri Dadvokalaii
master Student, Faculty of Engineering, Tarbiat Modares University
author
Jamal
Mohammadvali samani
faculty member of Tarbiat Modares University
author
Javad
Sarvarian
faculty member of Ilam University Water Engineering Department
author
text
article
2017
per
Undisturbed groundwater abstraction and their lack of substitution have led to a reduction in groundwater levels in many of the country's aquifers, including the Garmsar plain aquifer. It is important to determine the appropriate areas for artificial nutrition as a way to remedy this problem. In this research, two methods of boolean and ahp using GIS (arc geographic information system) were used to determine the best site for implementing groundwater artificial gutters in the Garmsar plain of Semnan. For this purpose, 8 effective parameters including the distance from the river, slope, thickness of the unsaturated area, surface permeability, geology, groundwater quality, land use, drainage density and its information layers were prepared in ARCGIS. Each of these layers was scored on the basis of Boolean logic and AHP, and finally, they were combined based on the operator of each of these methods, and the appropriate location maps for artificial nutrition were prepared. The artificial feeding plan implemented in the Garmsar Plain area as a control point was placed on the appropriate floor of the AHP method and the Bolin method. Appropriate lands for implementation of artificial nutrition plan with the use of Boolean logic were 0.78% and AHP method was 3.38% very suitable and 36.39% suitable.
Journal of Engineering & Construction Management
Assist. Prof. Dr. Roohollah Taherkhani
۲۵۳۸-۱۹۰۳
2
v.
1
no.
2017
12
16
https://www.jecm.ir/article_51134_d6a877c48962541cdd1916bd86da1838.pdf
Architectural Design of Clean Rooms in Pharmaceutical Industry
Leila
Mirsaeedi
Department of Architecture, Islamic Azad University, Gonbade Kavoos Branch, Gonbade Kavoos, Iran
author
text
article
2017
per
Clean room is a new technology that has emerged in the last hundred years. This technology was used in different industries. Due to the nature and type of products the pharmaceutical industry, one of the industries that clean rooms are widely used in it.Basic features in clean room are contamination control and the definitions and standards come as temperature, humidity, air pressure, etc that all of them are controlled in this space. Although the standards are complete and accurate design of mechanical and electrical this type of environment that exists in the design and manufacture is used, but on how to design clean room and access and communication with other departments, performance and optimize and reduce energy consumption and there is less detailed information. Issues such as location, access, space circulation, dimensional characteristics of the space, layout and interior features materials, components, structural parts of space, are those with numerous issues clean room remarkable design and optimum that can influence the optimization function space, cost and energy savings.The research method used in this research is descriptive-analytic method. At first, a review of the standards for clean rooms, factors affecting the architectural design were identified. These factors more specifically studied and classified by examining case studies related to architectural principles extracted were gathered. Eventually architectural considerations in the design of clean rooms for pharmaceutical industry provided especially for this type of applications that can be used in architectural design.
Journal of Engineering & Construction Management
Assist. Prof. Dr. Roohollah Taherkhani
۲۵۳۸-۱۹۰۳
2
v.
1
no.
2017
17
21
https://www.jecm.ir/article_156587_4f425510ce8460cc4f5505876062eb7c.pdf
Knowledge management impact on economic productivity of knowledge-based projects
Mohsen
Hamzezadeh
کارشناس
author
text
article
2017
per
Surely nowadays, knowledge management is considered as one the essential factors for national and industrial development; while on the other hand, it is responsible for tackling the problem facing in nationwide economy and production fields. In the ever growing world of competition and technology, scholars as well as high official managers regard efficient productivity either as target or as instrument. Fundamental researches can play significant role in synergizing science and wealth, developing knowledge-based economy, realizing scientific and economic purposes (including application of innovation and patents) and commercializing the research achievements in high-tech and high added value areas.The main goal of this research is to investigate the effect of knowledge management on economic productivity of fundamental researches. Statistical population in this study was knowledge based companies in Iran, while its index was estimated to be 174 according to Cochran test. The instrumental way of investigation was questionnaire. The reliability of the data based on the alpha test was 82. The final results show that there is considerable correlation between knowledge management and economic productivity. On the other knowledge management affect the productivity. In this way, the results of this study revealed that knowledge creation, storage and application as well as its contribution will be effective in the economic productivity of these sorts of enterprises and there id direct relation among them.
Journal of Engineering & Construction Management
Assist. Prof. Dr. Roohollah Taherkhani
۲۵۳۸-۱۹۰۳
2
v.
1
no.
2017
22
31
https://www.jecm.ir/article_156585_51397fde50a4af540569937526a2b3a7.pdf
Evaluation of the vulnerability of components of the water supply system
Sare
Roudbari
Master Student of Crisis Management, Malek Ashtar University of Technology, Tehran
author
Mohammadali
Nekooie
faculty member of Malek Ashtar University of Technology Tehran
author
Roohollah
Taherkhani
Assistant Professor, Faculty of Engineering, Imam Khomeini International University, Qazvin
author
text
article
2017
per
Water infrastructure is a vital vital artery that has always been exposed to natural and man-made threats over the years. This infrastructure is difficult for many people, since it is the center of gravity of a country, it is difficult to imagine life even for a day without water. As a result, governments and authorities must always have plans to reduce the damage to this infrastructure and be fully prepared when incidents occur. One of the measures to reduce the damage to the water network is to assess the vulnerability of all components of the water network to extraction of more critical points in order to allocate more funds to protect that area. In this paper, determining the different sections of the water network determines the extent of their vulnerability and, consequently, the vulnerability of the entire water network.
Journal of Engineering & Construction Management
Assist. Prof. Dr. Roohollah Taherkhani
۲۵۳۸-۱۹۰۳
2
v.
1
no.
2017
32
36
https://www.jecm.ir/article_51142_c067949255ef1319e131043308bce6f3.pdf
Evaluation indexes quality, cost and time at Lightweight steel structures (case study:LSF structures in yazd city)
Seyed Shahabaldin
Mirjafari
civil, civil, univercity azad islamic yazd, yazd, iran
author
text
article
2017
per
AbstractBuilding and Hausas are the nowadays necessity of people's life, the most permanent part of economy of a family or a country. But type and the approach of construction a building. Than it can be a kind stable investment or in the other hand the structure of a city and goal' s of functional management are really important.Than necessity of industrial structure is because of prominent features for instance : quality booting, reduction of cost and time are more necessary than before.LSF Structure got more fashionable, just because of side benefits.Use of C is getting more in Yazd.In this research shows the Evaluation of some Indicators, quality, cost, time.About LSF Structure in Yazd: at first the structure system is will be a paraphrased.Then by some question notes , we gather specialist's idea end opinion. Then by some computer software like PLS and SPSS . we analyze the data we gathered .The result of question notes indicate that cost is the most important item and then time and finally quality.
Journal of Engineering & Construction Management
Assist. Prof. Dr. Roohollah Taherkhani
۲۵۳۸-۱۹۰۳
2
v.
1
no.
2017
37
42
https://www.jecm.ir/article_156589_7eeafc192db31379d1f8a722d6e0d2cf.pdf