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The Study of antecedents and considering the status of Project-Based Organizations (PBOs) in our country such as MSA, Azarab, Sadad Machine, etc indicates that they are facing lots of problems in different aspects. This bad situation is in a way that amendment of part of sections guarantees the continuity of bad performance of these companies and we have to apply Business Process Reengineering and establishing a radical change in these firms. So the present research according to managers and experts opinions, several year observations of the writer and review of the literature of BPR, Project Management (PMBOK) and PBOs; and based on a library research, introduces the processes of PBOs in 3... 

prey and predator model occurs when the growth rate of species decline and increase the growth rate of other species. In the first chapter of this thesis review of basic concepts and theorems are important. In the second quarter, positive solutions in a heterogeneous system model release Bazykin with classic techniques to points most important of which is the case. In the third season, Stability and bifurcation system and predator prey Bazykin model with the function response Bdyngtn- De Angelis to equilibrium the points. In the fourth chapter in the normal form prey and predator system model Bazykin discuss  

In this dissertation, after analyzing the disadvantages of the offer cost minimization mechanism, it will be shown that it is necessary to find new auction mechanisms to be applied along with the fair, practical, and justifiable marginal pricing mechanism. Alternatively, the payment cost minimization mechanism has been proposed in the recent years. Different aspects of this mechanism have not been analyzed yet. There are many practical and economical considerations that yet need to be modeled in this mechanism and the problem formulation needs some improvements. As the first step, this mechanism will be compared with the traditionally offer cost minimization in a very simple market model.... 

Activity bases models of travel demand considers travel demand as a derived demand to fulfill activities. Development of these models cause better understanding of the mechanism of travel through Integrity, interdependencies, higher temporal and spatial aggregation, and behavioral basis. Although these models requires of spatial and temporal data with high resolution of huge number of peoples. Gathering this data through surveys require great labor and time. Mobile phone data of cellular network have high spatial-temporal resolution used for billing purposes and can be used as a supplementary source of data to develop activity based models. This research uses mobility patterns called motifs... 

In this thesis, we consider a simple layered structure grown along [001] direction. Based on the previous works we show that the energy spectrum contains linear Dirac spectrum of type II tilted in some direction. We also investigate the anomalous transport phenomena in the bilayer structures grown along [111] direction of a class of perovskites. The crystal field splits the d orbitals into two classes dubbed as eg and t2g described by different Hamiltonians within each manifold. An applied magnetic field breaks the time reversal symmetry and we show that the tight-binding bands acquire non-zero Chern numbers underlying the existence of non-trivial band topology in these structures. Again... 

In recent decades, particle composite materials have a wide range of applications in engineering. Particle composites are a group of heterogeneous materials with different length scales and are characterized by particles that are randomly distributed in a matrix phase. Geopolymer concrete is a special type of concrete that its binder is made by reacting alumina and silicate carriers with an activating agent and in recent years with the expansion of its use has reduced the amount of cement consumption. In addition to the many advantages of geopolymer concrete, it has disadvantages in terms of setting time. That is why the use of cement has been proposed as a solution to the problem. This... 

Metallurgical phenomena modeling help the researchers to understand the influence and contribution of different factors on the alloys properties. One of the most interesting phenomenon is the aging process occuring in age-hardenable alloys like 2xxx aluminium series. A factor which has high impact on aging and there are not proper models for evaluating that, is the contribution of plastic deformation. This factor has contribution not only on the dynamic precipitation (during deformation) but also on the natural aging after plastic deformation. So in this research a model containing the role of plastic deformation on dynamic precipitation and the contribution of dynamic precipitation on total...