Characterization of fuzzy complete normed space andfuzzy b-compact set

Characterization of fuzzy complete normed space andfuzzy b-compact set

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Part of #Characterization of fuzzy complete normed space andfuzzy b-compact set# :

Publishing year : 2014

Conference : National Electronic Conference on New Achievements in Engineering and Basic Sciences

Number of pages : 5

Abstract:. In this paper, we introduce the concept of a complete fuzzy norm in a linear space, and we consider some relations between fuzzy completeness and ordinary completeness on a linear space, moreover, a new form of fuzzy compact spaces, namely b-compact spaces, b -closed space is introduced. Some characterization of their properties is obtained.

Mathieu-Gauss Beams: A Thermal Consideration

Mathieu-Gauss Beams: A Thermal Consideration

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Part of #Mathieu-Gauss Beams: A Thermal Consideration# :

Publishing year : 2008

Conference : 15th Iranian Conference on Optics and Photonics

Number of pages : 5

Abstract -The Helmholtz-Gauss beam families such as Mathieu-Gauss (MG) and Bessel-Gauss (BG) beams are suffered from heat-induced thermal effects when it is dedicated to such thermally induced suffering on MG beams and uses the The results of this type of research have recently been performed on the BG beam. This study assumes a Hakola-type set up for the generation of MG beams. The results not only fully represents the various changes of these beams when passing through an ABCD system matrix, but also considers the MG beam beam quality, showing how the induced heat can deform the beam so much that they no longer are true MG beam

The study of effect of nano basic Alumina as a catalyst in preparation of Semicarbazones

The study of effect of nano basic Alumina as a catalyst in preparation of Semicarbazones

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Part of #The study of effect of nano basic Alumina as a catalyst in preparation of Semicarbazones# :

Publishing year : 2012

Conference : The first international conference on oil, gas, petrochemicals and power plants

Number of pages : 7

Abstract: A new, facile and simple process for synthesizing different classes of aldehydes and ketones into the corresponding semicarbazones with semicarbazide hydrochloride using nano particles of alumina was studied. The nanoparticles were characterized by TEM

Oilfield Production Optimization under Oil Price Uncertainty, By Nonlinear Programming and Monte-Carlo Simulation

Oilfield Production Optimization under Oil Price Uncertainty, By Nonlinear Programming and Monte-Carlo Simulation

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Part of #Oilfield Production Optimization under Oil Price Uncertainty, By Nonlinear Programming and Monte-Carlo Simulation# :

Publishing year : 2012

Conference : Eighth International Industrial Engineering Conference

Number of pages : 7

Abstract: One of the most challenging problems in production operations is to maximize the total oil production benefit of the field. In literature, this problem is solved in different ways without considering all the real constraints. Also, in practice, oil price is not acertain parameter. Therefore, the present study describes a nonlinear programming approach to maximize the daily cash flow of some gas-lifted wells for an uncertain condition for oil price. Firstly, the solution points of each well are obtained by employing a production simulation software and the asurrogate model is developed for gas lift performance in each well using nonlinear optimization. Then these functions are used to develop a model under capacity, pressure and other real constraints for production cash flow. Oil price is assumed as a triangle risk function in this model. Results show a significant increase in cash flow in relation to the old case due to suitable gas injection parameters. Sensitivity analysis on this problem shows that variations of oilprice, compression cost and water oil ratio should be considered in long-term optimization.

Simulations of Tidal Flows in KHUR-MUSA on a Triangular Mesh Using Finite Volume Method

Simulations of Tidal Flows in KHUR-MUSA on a Triangular Mesh Using Finite Volume Method

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Part of #Simulations of Tidal Flows in KHUR-MUSA on a Triangular Mesh Using Finite Volume Method# :

Publishing year : 2004

Conference : 6th International Conference on Coastal, Ports and Marine Structures

Number of pages : 4

Abstract: Following the successful modeling of global tidal currents in the Persian Gulf [1], this paper introduces a numerical simulation of tidal flows in the KHUR-E-MUSA estuary. The model computes the water level variation and velocity components in the horizontal plane, solving continuity and momentum equations of depth averaged equations. The model can consider bed and wall geometric complexities and resistances. The cell vertex finite volume method was applied for discretizing the governing equations. The descritized equations were solved on a triangular unstructured mesh. The solution domain was descretized using the Delaun triangulation method. For the dampening of the numerical oscillations of the explicit solution procedure, an artificial viscosity formulation was applied for triangular unstructured meshes. The efficency of the results was assumed by simulating the flow on Kour-e-Musa.

A Novel IT-based Access Management System and Authentication Method

A Novel IT-based Access Management System and Authentication Method

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Part of #A Novel IT-based Access Management System and Authentication Method# :

Publishing year : 2012

Conference : 6th International Conference on Science and Technology

Number of pages : 13

Abstract: Focal point of the proposed system is improving electronic access control systems. Regarding the proposed system and method, Clients can apply for their desired access code, which is available for a specific duration using an online booking system. The key / ticket can be printed at home without the use of any special peripheral equipment. The issued key is recognizable by the offline and the standalone lock system. Barcode as a code carrier has been chosen, according to its advantages, such as reduced cost of key production, ease of generating, and it is highly resistant. The Verifier Machines can be located at each entry point. These are standalone devices, and are not connected in any way between either nor to any central database, server or portal. The system is generally designed for places where some people make use of it for a particular time and location such as remote lodging / hotels, vacation homes, clubs, some departments of factories, parking entrances and so on. Users can create their own access code from anywhere in any time using the online portal. Thanks to the proposed encryption / decryption scheme, the system provides a reliable solution for designing a method and system for generating access codes and authenticating the key or ticket / coupon, offering a safe and fast way. A prototyped verifier machine is made to validate the generated access code. The major contributions of the study are user convenience in making the desired key, cost reduction in producing the barcode-key as well as empowering remote and disconnected lock systems for using Internet-made keys

Development of a robust numerical tool to analyze progressive matrix cracking damage mechanism in composite laminates

Development of a robust numerical tool to analyze progressive matrix cracking damage mechanism in composite laminates

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Part of #Development of a robust numerical tool to analyze progressive matrix cracking damage mechanism in composite laminates# :

Publishing year : 2014

Conference : Twenty-second Annual Conference of Mechanical Engineering

Number of pages : 6

Abstract: In this paper, a robust numerical tool is developed to predict progressive matrix cracking evolution in each layer of general symmetric laminates. The tool can be used to analyze plain laminates with any stacking sequence and number of layers under a tensile / shear loading condition. In this way, the stress transfer loss model is used to find the degradation of a unit cell's mechanical properties and damage parameters. The crack density is used as the only state variable that controls damage state. An energy-based evolution is developed and the reduced mechanical properties and strain tensor are used to calculate the strain energy release rate. The damage is a law implemented at integration points. A user-defined element routine (UEL) is developed in commercial software using full layer-wise plate theory. According to the finite element (FE), the base of the model, it can be used to analyze laminates with complex geometry and boundary conditions. The effect of different parameters on the accuracy of results and concurrent progressive damage analyzes in different layers of different laminates are investigated and the results are presented.

Production of clean transportation fuel dimethyl etherby dehydration of methanol over fluorinated-modifiedg-Al2O3 catalysts

Production of clean transportation fuel dimethyl etherby dehydration of methanol over fluorinated-modifiedg-Al2O3 catalysts

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Part of #Production of clean transportation fuel dimethyl etherby dehydration of methanol over fluorinated-modifiedg-Al2O3 catalysts# :

Publishing year : 2010

Conference : The first national conference on technology development in the oil, gas and petrochemical industries

Number of pages : 8

Abstract: The dimethyl ether (DME), which is a very attractive synthetic transportation fuel, is synthesized by the dehanation reaction of methanol over the alumina or its modified component as a catalyst. In this study, the objective is to evaluate the effect of fluorine on the activity and acidity of this catalyst. These catalysts were prepared by wet-impregnation that were modified with different concentrations of NH4F solution (0.1 to 0.5 mol / l) and used for vapor-phase dehydration of methanol to dimethyl ether in a fixed-bed reactor in the same operating conditions (T = 300 C, P = 1 bar, LHSV = 26.5 h-1 and characterized by means of BET, XRD and NH.-TPD techniques. According to the experimental results, the catalyst DHC-AF0.1 which was treated with 0.1 mol / l NH & amp The NH3 -TPD analysis showed that the above-mentioned sample had a higher concentration of medium-acidic sites and, consequently, a catalytic activity (p <0.05).

Improved Methods of I shape Beam-to-Pipe Column Connections Behaviour in Fire

Improved Methods of I shape Beam-to-Pipe Column Connections Behaviour in Fire

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Part of #Improved Methods of I shape Beam-to-Pipe Column Connections Behaviour in Fire# :

Publishing year : 2012

Conference : Third National Conference on Earthquake and Structures

Number of pages : 7

Abstract: Beam-to-column connections have been of great significance in influencing structural behavior at ambient and elevated temperatures. Observations from full-scale fire tests and damaged structures confirm that connections have a significant effect on the structural components in ftre. One type of such connections is the connections between the 1-shape beam and the pipe shape columns in the oil platform deck. Considering the high probability of a frr in oil platforms, it is important to study the behavior of these connections at elevated temperatures. Therefore, 7 experimental tests have been carried out on this connection type to investigate their fire-resistance capacity.

Effect of economic growth on changing trends in the asset-holding pattern of mutual funds

Effect of economic growth on changing trends in the asset-holding pattern of mutual funds

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Part of #Effect of economic growth on changing trends in the asset-holding pattern of mutual funds# :

Publishing year : 2013

Conference : The first international epic political conference (with an approach to Middle East developments) and economic epic (with an approach to management and accounting)

Number of pages : 7

Abstract: The purpose of this study is to investigate the effect of economic growth on changing trends in asset-holding pattern mutual funds. Mutual fund is divided into two categories, such as open-ended and close-ended. This research tries to study open-ended mutual funds. The sample in this study was a mutual fund company in the USA, which ends in the term of assets under management (AUM) in the words. The four components of the open-ended mutual fund are equity funds (EF), bond funds (BMF), hybrid funds (HMF) and money market mutual funds (MMMF) ) As independent variables. Growth domestic production (GDP) countries became a dependent variable. The result of the study indicates that higher GDP growth rates benefit equity funds and negatively affect money market mutual funds and bond funds. In the account of hybrid funds, there is no association between GDP and hybrid funds.