Study on the Drawing Method of Project Network Diagram

2015 ◽  
Author(s):  
Wu Kehe ◽  
Wu Tingting ◽  
An Yanwen ◽  
Zeng Wenjing
Keyword(s):  
Network Diagram ◽  
Project Network ◽  
Drawing Method

Application of Neural Network in Duration Implicit Cost Control for Construction Projects

2013 ◽  
Vol 431 ◽  
pp. 365-369
Author(s):  
Bi Lin Shao ◽  
Li Qing Wang ◽  
Qiong Wu
Keyword(s):  
Neural Network ◽  
Construction Projects ◽  
Cost Control ◽  
Construction Project ◽  
Back Propagation ◽  
Control Model ◽  
Network Diagram ◽  
The Third ◽  
The Neural Network ◽  
Project Network

According to the characteristics of construction project, it set the third level of duration implicit cost, deepening the understanding of the duration implicit cost in construction project. Through analyzing the similar characteristics of the technique of project network diagram and neural network, it built a duration implicit cost control model based on neural network, which can adjust the project network diagram to the optimization direction. Aiming at the defects of the traditional neural network, the variable learning rate back-propagation arithmetic and the additional momentum method were introduced, and the duration implicit cost control model was built, improving the accuracy of the control for the neural network technique.

In a flash of time: knowledge resources that enable professional cross-boundary work

2020 ◽  
Author(s):  
David Cross ◽  
Juani Swart
Keyword(s):  
High Speed ◽  
Work Organization ◽  
Project Teams ◽  
Professional Work ◽  
Organizational Boundaries ◽  
Knowledge Resources ◽  
Network Organizations ◽  
Fast Pace ◽  
Project Network ◽  
Or Organization

Abstract In this paper, we highlight the networked context of the professions. In particular, we indicate that neo-classical professionals tend to work across organizational boundaries in project teams, often to meet the needs of clients and the wider society. However, little is known about the resources that professionals draw on to meet immediate, fast paced, client demands in project network organizations (PNOs). We pinpoint how knowledge resources, human, social and organizational capital enable professionals to produce outputs at a fast pace/tempo. Temporality emerged as an unexpected but key issue in our empirical research and we explore this further here. First, we put forward how professional work organization(s) has changed by focusing on the boundaries of organizations, and how this is often temporary and project-driven. Second, we use the specific lens of knowledge resources which are drawn upon to enable networked working and ask the question: which knowledge resources enable professionals to work at a fast pace within networks? Third, appreciative of the vast literature on temporary and networked organizations in professional work, our focus is beyond a single profession or organization, and hence, we build upon the prior research on PNOs. We do this by drawing on empirical data of a humanitarian aid project networked organization (HN) that upscales across its network at high speed, often within days, to generate funds for humanitarian disasters in order to save lives.

Production of Tapered Cups by Sequential Deep Drawing of Sheet Metals Using Drawn Cups as a Part of Punch

1993 ◽  
Vol 115 (2) ◽  
pp. 224-229 ◽  
Author(s):  
K. Yamaguchi ◽  
K. Kanayama ◽  
M. H. Parsa ◽  
N. Takakura
Keyword(s):  
Deep Drawing ◽  
Drawing Ratio ◽  
Drawing Process ◽  
Sheet Metals ◽  
Deep Drawing Process ◽  
Drawing Method

A new deep drawing process of sheet metals is developed to facilitate small-lot production of deep cups with large drawing ratio. In this process, unlike the conventional deep drawing method, a few drawn cups are always stacked on the punch and used as a part of punch for the subsequent deep drawing of a given blank. Before drawing a new blank, a drawn cup which is in contact with the punch is stripped off. The repetition of such stripping and drawing operations makes it possible to carry out both the first-stage drawing and the subsequent slight redrawings in one drawing operation using only one pair of punch and die. In this paper, this new deep drawing process is applied to the production of tapered cups and the main feature of the process is shown.

Benefits of Using Diamond Dies for Cold Alternate Drawing of Magnesium Alloys

2016 ◽  
Vol 716 ◽  
pp. 13-21 ◽  
Author(s):  
Vladimir Stefanov Hristov ◽  
Kazunari Yoshida
Keyword(s):  
Magnesium Alloy ◽  
Weight Ratio ◽  
High Strength ◽  
Wire Drawing ◽  
High Ductility ◽  
Element Analysis ◽  
The Wire ◽  
Shearing Strain ◽  
Drawing Method

In recent years, due to its low density and high strength/weight ratio, magnesium alloy wires has been considered for application in many fields, such as welding, electronics, medical field (for production of stents). But for those purposes, we need to acquire wires with high strength and ductility. For that we purpose we proposed alternate drawing method, which is supposed to highly decrease the shearing strain near the surface of the wire after drawing, by changing the direction of the wire drawing with each pass and thus acquiring high ductility wires.We have done research on the cold alternate drawing of magnesium alloy wires, by conducting wire drawing of several magnesium wires and testing their strength, hardness, structure, surface and also finite element analysis, we have proven the increase of ductility at the expense of some strength.In this research we are looking to further improve the quality of the drawn wires by examining the benefits of using diamond dies over tungsten carbine dies. Using the alternate drawing method reduces the strength of the drawn wires and thus lowering their drawing limit. By using diamond dies we are aiming to decrease the drawing stress and further increase the drawing limit of the alternate drawn wires and also improve the quality of the finishing surface of the wires. With this in mind we are aiming to produce a good quality wire with low diameter, high ductility, high strength and fine wire surface.

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