Volume 55 (2023)
Volume 54 (2022)
Volume 53 (2021)
Volume 52 (2020)
Volume 51 (2019)
Volume 50 (2018)
Volume 49 (2017)
Volume 48 (2016)
Volume 47 (2016)
Volume 46 (2015)
Volume 45 (2014)
Volume 44 (2013)
Volume 43 (2009)
Volume 42 (2008)
Volume 41 (2007)

Developing a New Genetic Algorithm for Selecting Efficient Project Portfolio

Mohammad Mirabi; Mohammad Reza Zare Banadkouki

Volume 54, Issue 1 , June 2022, , Pages 23-34


  selecting an efficient project portfolio among available projects is a vital decision for any project manager. The main questions are which projects can have more long-term benefits for managers or organizations. Due to the complexity of this field of research, today so many approaches are developed ...  Read More

Edge pair sum labeling of spider graph

P. Jeyanthi; T. Saratha Devi

Volume 45, Issue 1 , December 2014, , Pages 25-34


  An injective map f : E(G) → {±1, ±2, · · · , ±q} is said to be an edge pair sum labeling of a graph G(p, q) if the induced vertex function f*: V (G) → Z − {0} defined by f*(v) = (Sigma e∈Ev) f (e) is one-one, where Ev denotes the set of edges in G that are incident with a vetex v and f*(V ...  Read More

Online Scheduling of Jobs for D-benevolent instances On Identical Machines

I. Mohammadi; Dara Moazzami

Volume 47, Issue 1 , June 2016, , Pages 27-36


  We consider online scheduling of jobs with speci c release time on m identical machines. Each job has a weight and a size; the goal is maximizing total weight of completed jobs. At release time of a job it must immediately be scheduled on a machine or it will be rejected. It is also allowed during execution ...  Read More

Algorithm for finding the largest inscribed rectangle in polygon

Zahraa Marzeh; Maryam Tahmasbi; Narges Mirehi

Volume 51, Issue 1 , June 2019, , Pages 29-41


  In many industrial and non-industrial applications, it is necessary to identify the largest inscribed rectangle in a certain shape. The problem is studied for convex and non-convex polygons. Another criterion is the direction of the rectangle: axis aligned or general. In this paper a heuristic algorithm ...  Read More

Mixed cycle-E-super magic decomposition of complete bipartite graphs

G. Marimuthu; S. Stalin Kumar

Volume 46, Issue 1 , December 2015, , Pages 35-50


  An H-magic labeling in a H-decomposable graph G is a bijection f : V (G) ∪ E(G) → {1, 2, ..., p + q} such that for every copy H in the decomposition, ∑νεV (H) f(v) + ∑νεE (H) f(e) is constant. f is said to be H-E-super magic if f(E(G)) = ...  Read More

Snakes and Caterpillars in Graceful Graphs

Christian Barrientos; Sarah M Minion

Volume 50, issue 2 , December 2018, , Pages 37-47


  Graceful labelings use a prominent place among difference vertex labelings. In this work we present new families of graceful graphs all of them obtained applying a general substitution result. This substitution is applied here to replace some paths with some trees with a more complex structures. Two ...  Read More

A note on 3-Prime cordial graphs

R. Ponraj; Rajpal Singh; S. Sathish Narayanan

Volume 48, Issue 1 , December 2016, , Pages 45-55


  Let G be a (p, q) graph. Let f : V (G) → {1, 2, . . . , k} be a map. For each edge uv, assign the label gcd (f(u), f(v)). f is called k-prime cordial labeling of G if |vf (i) − vf (j)| ≤ 1, i, j ∈ {1, 2, . . . , k} and |ef (0) − ef (1)| ≤ 1 where vf (x) denotes the number ...  Read More

Tree Technology for Memory Confidentiality Integrity Protection

Hui Min Meng; HongJin Wang; NianMin Yao; ShunYi Cheng

Volume 50, Issue 1 , June 2018, , Pages 51-67


  PCIP\underline{ }Tree is a Parallelized memory Confidentiality and Integrity Protection technology (PCIP) method that pre-diffuses and encrypts the data stored in off-chip counter value for confidentiality and integrity protection of data, adding redundant checking data to the protection data block to ...  Read More

شناسایی سیستم و طراحی کنترل بهینه با استفاده از الگوریتم ژنتیک برای کنترل ارتعاشات یک بال هوشمند

Hossein Shahi; Aghil Yousefikoma; Ali Reza Mehrabian

Volume 42, Issue 1 , April 2008, , Pages 119-130


  A solution to the problem of identification and control of smart structures is presented in this paper. Smart structures with build-in sensors and actuators can actively and adaptively change their physical geometry and properties. As a particular example, a representative dynamic model of a typical ...  Read More

سینتیک تشویه پنتا اکسید وانادیم با کربنات سدیم

Seyyed Khatiboleslam Sadr Nejad; Fateme Asjodi

Volume 43, Issue 2 , July 2009, , Pages 197-204


  Vanadium is distributed widely and scarcely (150 ppm) on the earth. Its major applications are in steelmaking, dye-production and catalyst-fabrication industries. With the ever-increasing demand for this metal, secondary resource-exploitation of such waste materials as spent catalysts is recommended. ...  Read More

بررسی عوامل مختلف دراسانس گیری از دارچین

Nasrin Mohammadbeygi; Ali Haghighi Asl; Faramarz Hormozi

Volume 42, Issue 2 , May 2008, , Pages 199-203


  Cinnamon is the bark the cinnamomi cassia that exhibits many medical properties such as anti-cancer effect and anti-diabetic effect. Moreover, because of its antioxidant activity; it can be used in food industries. Many studies have already reported biological and chemical properties of the cinnamon ...  Read More

پهنه‌بندی خطرات ژئوتکنیکی لرزه‌ای در نوار ساحلی دریای خزر

Solmaz Babakan; Mehdi Zare; Hossein Memarian

Volume 43, Issue 3 , September 2009, , Pages 229-238


  Natural hazards are among destructive agents that annually take thousands of lives and impose devastating damages in Iran. Spotting such a high risk areas can help reducing the amount of their probable risk. A 1:500000 liquefaction and landslide hazard zonation map developed for the southern shoreline ...  Read More

بررسی تجربی تغییرات انباشت فاز پراکنده با ارتفاع در ستونهای استخراج مایع- مایع ضربه‌ای سینی دار

Mohammad Mehdi Montazer Rahmati; Seyyed Jaber Safdari; Hossein Akhgari

Volume 41, Issue 2 , July 2007, , Pages 233-240


  Holdup was measured at various frequencies, amplitudes, continuous and dispersed phase flow rates for binary systems in a pulsed plate column capable of providing samples at various heights. The binary systems was so selected as to cover a wide spectrum of interfacial tensions. Dispersed phase holdup ...  Read More

ررسی شرط پیکارد در مسأله انتقال به سمت پائین در تعیین ژئوئید بدون استفاده از روش استوکس

Abdorreza Safari; Yahyallah Tavakkoli

Volume 42, Issue 3 , July 2008, , Pages 339-352


  The problem of downward continuation of the gravity field from the Earth’s surface to the reference ellipsoid arises from the fact that the solution to the boundary value problem for geoid determination without applying Stokes formula is sought in terms of the disturbing potential on the ellipsoid ...  Read More

بهینه سازی قابهای فولادی با استفاده از الگوریتم وراثتی اصلاح شده هوشمند

Mohammad Reza Ghasemi; Akbar Azadi

Volume 42, Issue 4 , August 2008, , Pages 465-476


  One of the major purposes of optimization in civil engineering is to perform a suitable design for the structure. This goal has to fulfill technical criteria and contain the minimum economical costs. Building frames are of the most customary civil engineering structures. Therefore, optimization of these ...  Read More

تحلیل انتقال حرارت مزدوج در ناحیه طول ورودی

Hossein Shokouhmand; Javad Rostami

Volume 41, Issue 4 , November 2007, , Pages 473-483


  In this paper conjugated heat transfer in thermal entrance region through the sinusoidal wavy channel has been investigated. The fluid flow is assumed to be laminar, steady state, incompressible, and hydrodynamically fully developed. A constant heat flux is assumed to be applied on the outer edge of ...  Read More

ساختار دهی آنی داده‌‌های مکانی ورودی GIS با تأکید بر عارضه راه

Shirin Malihi; Hamid Ebadi; Farshid Farnoud Ahmadi; Mehdi Maboudi

Volume 43, Issue 4 , September 2009, , Pages 479-488


  An important issue in implementation of a GIS system is preparation of data to be entered in GIS. To produce spatial data for GIS using photogrammetric techniques, conventional method is to apply photogrammetric and GIS systems individually (off-line procedure). This approach is costly, time consuming ...  Read More

روش بهینه انتخاب مته برای حفاری های نفت و گاز ایران

Vahid Azizi; Hossein Memarian; Arash Khosravi

Volume 42, Issue 5 , September 2008, , Pages 553-564


  Numerous parameters influence bit selection process, which considering all them is not normally feasible. Existing methods use limited number of these parameters to choose a suitable bit for a specific drilling condition. One of the widely used methods is cost per foot. Specific energy and drilling strength ...  Read More

بهبود پایداری شبکه قدرت با روش جدید حذف بار ترکیبی

Amir Pirouz Ghale; Majid Sanaye Pasand; Hamed Asadi

Volume 43, Issue 5 , September 2009, , Pages 619-633


  Power system blackouts have become a serious problem for electric utilities especially in recent years. Different forms of system instability have emerged in recent blackouts, such as voltage instability and frequency instability. To counteract each form of system instability, special algorithms have ...  Read More

بررسی آزمایشگاهی عملکرد میان قاب های مصالح بنایی در قاب های بتنی

Farzad Parsa; Abdorreza Sarvghad Moghaddam

Volume 42, Issue 6 , December 2008, , Pages 681-690


  An experimental study is conducted on three ½ scales, single-story, single-bay, frame specimens. The first specimen was a reinforced concrete frame with solid-brick infill. The second specimen was a reinforced concrete frame with hollow clay perforated-brick infill. The last specimen was a reinforced ...  Read More