scholarly journals Measuring and Tracking Externalized Work to Support Industrialized Construction

Author(s):  
Perry Daneshgari ◽  
Heather Moore ◽  
Hisham Said

The same principles that have made other skilled-trade-based industries more efficient are being deployed in construction through Industrialization, which requires understanding skilled trade work and segregating/externalizing the work from the jobsite. The construction industry still relies heavily on skilled trades and their tacit knowledge, while most of the information available at the points of installation is not passed on. A significant increase of work externalization requires a measuring and tracking method that can: 1) tap into this tacit knowledge as the basis for work planning and control; and 2) understand, quantify, and minimize the manipulation effort done onsite for the prefabricated assemblies. As such, this paper presents a planning and control framework for industrialized construction operations that integrates information entropy and the novel concept of work manipulations to monitor and measure the expected performance outcomes, in a more sophisticated approach beyond measuring äóìhoursäó� and äóìquantitiesäó� of the work. The development of the proposed framework is based on the analysis of a set of case studies that illustrate the impact of information predictability manipulation strategies on construction prefabrication decisions.

2006 ◽  
Vol 392 (1-2) ◽  
pp. 84-89 ◽  
Author(s):  
Simone R. Caljouw ◽  
John van der Kamp ◽  
Geert J.P. Savelsbergh

2021 ◽  
pp. 097226292110435
Author(s):  
Anupama Prashar

The case helps students to understand the emerging concept of linear and circular economies. It facilitates to examine the implications of circular business models such as remanufacturing on operations management decisions. It also introduces them to the concept of total cost of ownership and impact of remanufacturing on reducing total cost of ownership. The cases help students to evaluate the challenges and opportunities of remanufacturing business in emerging economy like India. This case is among the first few cases on the application of circular economy principles in context of heavy-duty and off-road sector and the impact of these principles on product design and production planning and control decisions.


2017 ◽  
Vol 8 (2) ◽  
pp. 30-40 ◽  
Author(s):  
Peter Nielsen ◽  
Zbigniew Michna ◽  
Brian Bruhn Sørensen ◽  
Ngoc Do Anh Dung

AbstractLead times and their nature have received limited interest in literature despite their large impact on the performance and the management of supply chains. This paper presents a method and a case implementation of the same, to establish the behavior of real lead times in supply chains. The paper explores the behavior of lead times and illustrates how in one particular case they can and should be considered to be independent and identically distributed (i.i.d.). The conclusion is also that the stochastic nature of the lead times contributes more to lead time demand variance than demand variance.


2020 ◽  
Vol 124 (1) ◽  
pp. 4-19 ◽  
Author(s):  
O. White ◽  
J. Gaveau ◽  
L. Bringoux ◽  
F. Crevecoeur

Humans excel at learning complex tasks, and elite performers such as musicians or athletes develop motor skills that defy biomechanical constraints. All actions require the movement of massive bodies. Of particular interest in the process of sensorimotor learning and control is the impact of gravitational forces on the body. Indeed, efficient control and accurate internal representations of the body configuration in space depend on our ability to feel and anticipate the action of gravity. Here we review studies on perception and sensorimotor control in both normal and altered gravity. Behavioral and modeling studies together suggested that the nervous system develops efficient strategies to take advantage of gravitational forces across a wide variety of tasks. However, when the body was exposed to altered gravity, the rate and amount of adaptation exhibited substantial variation from one experiment to another and sometimes led to partial adjustment only. Overall, these results support the hypothesis that the brain uses a multimodal and flexible representation of the effect of gravity on our body and movements. Future work is necessary to better characterize the nature of this internal representation and the extent to which it can adapt to novel contexts.


2018 ◽  
pp. 1584
Author(s):  
Putu Ari Raditya ◽  
I Gde Ary Wirajaya

To achieve its goals, hotel requires a good planning and control in order to run its implementation in accordance to the policy that has been assigned. Budget is an important element and a centerpiece in the planning and control process. The aim of the current study is to find out whether locus of control can moderate the impact of budgetary participation and budget emphasis on budgetary slack. This study was conducted on 4-star hotels in Kuta district. The sampling method used was saturation. There were 30 hotels used as the sampe with 97 respondents. Questionnaire was used to collect the data. To analyze the data, Moderated Regression Analysis (MRA) testing was applied.The study found that locus of control could strengthen the impact of budgetary participation and budget emphasis on budgetary slack. It can be concluded that the higher the participation given and the budget emphasis from the head moderated by locus of control, the higher the budgetary slack. Keyword: budgetary participation, budget emphasis, locus of control, budgetary slack


Author(s):  
Sung-Hee Lee ◽  
Ambarish Goswami

Safety and robustness will become critical issues when humanoid robots start sharing human environments in the future. In physically interactive human environments, a catastrophic fall is the main threat to safety and smooth operation of humanoid robots, and thus it is critical to explore how to manage an unavoidable fall of humanoids. This paper deals with the problem of reducing the impact damage to a robot associated with a fall. A common approach is to employ damage-resistant design and apply impact-absorbing material to robot limbs, such as the backpack and knee, that are particularly prone to fall related impacts. In this paper, we select the backpack to be the most preferred body segment to experience an impact. We proceed to propose a control strategy that attempts to re-orient the robot during the fall such that it impacts the ground with its backpack. We show that the robot can fall on the backpack even when it starts falling sideways. This is achieved by utilizing dynamic coupling, i.e., by rotating the swing leg aiming to generate spin rotation of the trunk (backpack), and by rotating the trunk backward to drive the trunk to touch down with the backpack. The planning and control algorithms for fall are demonstrated in simulation.


2005 ◽  
Vol 18 (3) ◽  
pp. 229-246 ◽  
Author(s):  
Ann Jorissen ◽  
Eddy Laveren ◽  
Rudy Martens ◽  
Anne-Mie Reheul

This article analyzes the impact of not controlling for “demographic sample” differences on research results in the area of comparative family/nonfamily business research. Using different statistical methods with and without control for “demographic sample” differences, the results show that controlling for these firm demographics in a bivariate as well as a multivariate framework is very important to discover “real” differences between family and nonfamily firms. We found “real” differences for export, budgeting, variable reward systems, profitability and gender, educational degree, and tenure of the CEO. Strategy, networking, long-term planning and control systems, perceived environmental uncertainty, growth, and management training, classified by prior empirical research as different between family and nonfamily firms, do not differ.


Author(s):  
Rebecca Miller ◽  
Farshid Abbasi ◽  
Javad Mohammadpour

Purpose This paper aims to focus on the design and testing of a robotic device for power line inspection and cleaning. The focus for this design is on simplicity and compactness with a goal to create a device for linemen and other power line workers to keep in their toolbox. Design/methodology/approach The prototype uses V-grooved wheels to grip the line and can pass obstacles such as splices. It is equipped with a video camera to aid in line inspection and a scrub brush to clean debris from the line. The operator controls the device remotely from a laptop through a wireless connection. The novel way in which this device moves down the power line allows compactness while still being able to overcome in-line obstacles up to a certain size. Findings The device has been tested on a test bed in the lab. The device is able to move down a line and expand to overcome in-line obstacles as it travels. Testing proved the mechanical feasibility and revealed new requirements for a future prototype. Practical implications The device can be used for power line asset management by power companies; line inspection can lead to preventative repairs, leading to less downtime. Social implications It stands to reduce costs related to maintenance and mitigates down time and emergency repairs. Originality/value Innovative features include its size, mobility and control methods. Overall, the impact of this work extends to the utility maintenance sector and beyond.


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