نتایج جستجو برای: cell movements

تعداد نتایج: 1757961  

Mahdi Ghaffari Sayyed Mahdi Sadat Khorasgani

The cell formation (CF) is one of the most important steps in the design of a cellular manufacturing system (CMS), which it includes machines’ grouping in cells and part grouping as separate families, so that the costs are minimized. The various aspects of the problem should be considered in a CF. The machine reliability and the tool assigned to them are the most important problems which have t...

Journal: :علوم اجتماعی 0
دکتر مسعود غفاری دکتر سید حسین اطهری

in this article, the writer discusses the concept of modernity and its relationship with social movements, as is reflected in classical works on modernity as well as in the contemporary modern political and sociological thoughts. the purpose is not to present a quantitative analysis of the development of the concept of modernity, but to explain the relationship between modernity and political a...

M. Reza Akbari Jokar Soroush Saghafian

This paper proposes a new integrative view of manufacturing cell formation and both inter-cell and intra-cell layout problems. Cells formation and their popular bi-directional linear layout are determined simultaneously through a Dynamic Programming algorithm (with the objective of minimizing the inter-cell flow cost under a cell size constraint). This Dynamic Programming algorithm is implement...

Journal: :Current opinion in genetics & development 2008
Carl-Philipp Heisenberg Lilianna Solnica-Krezel

Animal body plan arises during gastrulation and organogenesis by the coordination of inductive events and cell movements. Several signaling pathways, such as BMP, FGF, Hedgehog, Nodal, and Wnt have well-recognized instructive roles in cell fate specification during vertebrate embryogenesis. Growing evidence indicates that BMP, Nodal, and FGF signaling also regulate cell movements, and that they...

N. Javadian, A. Baboli , F. Khaksar-Haghani, R. Kia, R. Tavakkoli-Moghaddam ,

    Dynamic cellular manufacturing systems,   Mixed-integer non-linear programming,   Production planning, Manufacturing attributes   This paper presents a novel mixed-integer non-linear programming model for the design of a dynamic cellular manufacturing system (DCMS) based on production planning (PP) decisions and several manufacturing attributes. Such an integrated DCMS model with an extensi...

Journal: :Mechanisms of Development 2007
Chris Jopling Jeroen den Hertog

Morphogenetic cell movements during gastrulation shape the vertebrate embryo bodyplan. Non-canonical Wnt signaling has been established to regulate convergence and extension cell movements that mediate anterior-posterior axis elongation. In recent years, many other factors have been implicated in the process by modulation of non-canonical Wnt signaling or by different, unknown mechanisms. We ha...

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