4,150 research outputs found
Greening Historic DC: Challenges and Opportunities to Incorporate Historic Preservation into the District\u27s Drive for Sustainable Development
This paper focuses primarily on the District of Columbia, a city with a robust past and a bold agenda for a sustainable future. However, it may not be obvious why historic preservation - a movement typically concerned with aesthetics - can play an integral role in a city\u27s sustainability initiative. Therefore, this paper first sets forth the basic argument why historic preservation can be a tool to promote sustainable development. Part II examines the scientific data indicating that historic preservation is a green building practice. Next, Part III posits that investment in historic districts is an investment in sustainability. Then, Part IV gives an overview of the recent efforts by the National Trust for Historic Preservation to bolster this argument, including the National Trust\u27s collaboration with the U.S. Green Building Council, which has yielded significant changes to the LEED rating system.
The remainder of this paper focuses on the efforts of the District. This paper identifies challenges and opportunities for the city\u27s historic preservation program as the city commits to a sustainable future
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Modelling commercial vehicle handling and rolling stability
YesThis paper presents a multi-degrees-of-freedom non-linear multibody dynamic
model of a three-axle heavy commercial vehicle tractor unit, comprising a subchassis, front
and rear leaf spring suspensions, steering system, and ten wheels/tyres, with a semi-trailer
comprising two axles and eight wheels/tyres. The investigation is mainly concerned with the
rollover stability of the articulated vehicle. The models incorporate all sources of compliance,
stiffness, and damping, all with non-linear characteristics, and are constructed and simulated
using automatic dynamic analysis of mechanical systems formulation. A constant radius turn
test and a single lane change test (according to the ISO Standard) are simulated. The constant
radius turn test shows the understeer behaviour of the vehicle, and the single lane change
manoeuvre was conducted to show the transient behaviour of the vehicle. Non-stable roll
and yaw behaviour of the vehicle is predicted at test speeds .90 km/h. Rollover stability of
the vehicle is also investigated using a constant radius turn test with increasing speed.
The articulated laden vehicle model predicted increased understeer behaviour, due to higher
load acting on the wheels of the middle and rear axles of the tractor and the influence of the
semi-trailer, as shown by the reduced yaw rate and the steering angle variation during the constant
radius turn. The rollover test predicted a critical lateral acceleration value where complete
rollover occurs. Unstable behaviour of the articulated vehicle is also predicted in the single lane
change manoeuvre
Executive Computing: A Benefit Matrix
Executive computing can have a major impact on the nature of executive work and the way that organisations function. This paper presents an exploratory study of current practices and business benefits of executive computing in Australia. The first aim of this research was to explore how executives rank executive computing benefits. The second aim was to see how executive computing benefits crosstabulate and correlate with organisational factors, such as, executive position, executive computer access, formal and in-house training. Results showed executives felt that the EIS provides more timely and accurate information, helps to improve the presentation of data and aids executive decision making
E-SKILLS FOR THE IS PROFESSIONAL
A common theme that appears in the literature is that many large organisations around the world are positioning themselves to take advantage of the new internet economy. But what does this “positioning” entail? Is it the purchasing and implementation of the right technology? Is it the redesign of business processes? What skills are needed by these organizations? Recently there has been call in the Australian marketplace for information systems (IS) professionals to possess skills that can handle the move into E-business and Ecommerce. In accordance with this we sought the views of information systems professionals employed in the Australian and New Zealand marketplace about the skills mix necessary in the “E” world. The main results of this survey showed that the teamwork and deadlines dominated the business skills whilst knowledge of Ebusiness/ commerce models dominated the technical skills. The second phase of this research is to develop a more comprehensive list of business and technical skills
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