7,311 research outputs found
SciTech News Volume 71, No. 3 (2017)
Columns and Reports
From the Editor.........................3
Division News
Science-Technology Division....5
Chemistry Division....................8
Conference Report, Marion E, Sparks Professional Development Award Recipient..9
Engineering Division................10
Engineering Division Award, Winners Reflect on their Conference Experience..15
Aerospace Section
of the Engineering Division .....18
Architecture, Building Engineering, Construction, and Design Section of the Engineering Division................20
Reviews
Sci-Tech Book News Reviews...22
Advertisements
IEEE..........................................
The Dynamics of Internet Traffic: Self-Similarity, Self-Organization, and Complex Phenomena
The Internet is the most complex system ever created in human history.
Therefore, its dynamics and traffic unsurprisingly take on a rich variety of
complex dynamics, self-organization, and other phenomena that have been
researched for years. This paper is a review of the complex dynamics of
Internet traffic. Departing from normal treatises, we will take a view from
both the network engineering and physics perspectives showing the strengths and
weaknesses as well as insights of both. In addition, many less covered
phenomena such as traffic oscillations, large-scale effects of worm traffic,
and comparisons of the Internet and biological models will be covered.Comment: 63 pages, 7 figures, 7 tables, submitted to Advances in Complex
System
A Nonparametric Comparison Of The Per Capita Yearly Economic Needs For The Water Supply In The USA-Mexico Border Region
Based on demographic and economic information, this research paper evaluates a nonparametric comparison of the per capita yearly economic needs for water supply of two international regions conformed by 100 cities and/or communities (localities) along the border of United States and Mexico, from which 57 are located on the American side and 43 on the Mexican side; part of the discrepancy exhibited by both borders about the per capita yearly economic needs for water supply is explained as a reflection of the demographic-gap among adjacent localities of the common border region; we present confirmatory evidence of discrepancies. The per capita yearly economic needs estimate should be considered in order to increase the sustainability for water supply. The United States-Mexico border in terms of water supply needs should be interpreted as an issue of national security. If the accelerated rate of population growth on both sides of the border between United States and México continues including the area around the water river basins, this could produce a dramatic scenery in the future (for year2020): An expected percentage of population growth of 108 % accompanied with a long-term economic needs volume of $ 3,393,870,000.0
A Survey of Prediction and Classification Techniques in Multicore Processor Systems
In multicore processor systems, being able to accurately predict the future provides new optimization opportunities, which otherwise could not be exploited. For example, an oracle able to predict a certain application\u27s behavior running on a smart phone could direct the power manager to switch to appropriate dynamic voltage and frequency scaling modes that would guarantee minimum levels of desired performance while saving energy consumption and thereby prolonging battery life. Using predictions enables systems to become proactive rather than continue to operate in a reactive manner. This prediction-based proactive approach has become increasingly popular in the design and optimization of integrated circuits and of multicore processor systems. Prediction transforms from simple forecasting to sophisticated machine learning based prediction and classification that learns from existing data, employs data mining, and predicts future behavior. This can be exploited by novel optimization techniques that can span across all layers of the computing stack. In this survey paper, we present a discussion of the most popular techniques on prediction and classification in the general context of computing systems with emphasis on multicore processors. The paper is far from comprehensive, but, it will help the reader interested in employing prediction in optimization of multicore processor systems
The Use of an Innovative Jig to Stimulate Awareness of Sustainable Technologies among Freshman Engineering Students
Published ArticleRenewable energy systems, such as photovoltaic (PV) systems, still require a
great deal of research and development in order to improve efficiency, reduce overall
manufacturing costs, and to become more sustainable in the future. Solar power production
using PV modules has increased and is currently one of the fastest growing energy
technologies worldwide, leading to speculation that it will be the main source of electrical
power in future. This on-going research and implementation of PV modules and systems
necessitates the effective training of technicians, technologists and engineers required to
install, maintain or interface with these systems. The Department for Electrical, Electronic
and Computer Engineering at the Central University of Technology, Free State (CUT) in
South Africa has implemented a Higher Certificate in Renewable Energy Technologies
(HCRET) in January 2014. The purpose of this article is to outline a practical innovative
jig that was used to stimulate awareness and understanding of the fundamental operating
principles of one specific sustainable technology, namely PV modules. Electronic
measurements from this innovative jig are obtained by using an ARDUINO UNO board
which interfaces with LabVIEW. Student perceptions of using this innovative jig are
further presented, which indicate that the practical experiments were satisfying,
challenging, relevant and applicable to PV module operation
Strategies for teaching engineering mathematics
This thesis is an account of experiments into the teaching of mathematics
to engineering undergraduates which have been conducted over twenty
years against a background of changing intake ability, varying output
requirements and increasing restrictions on the formal contact time
available.
The aim has been to improve the efficiency of the teaching-learning
process.
The main areas of experimentation have been the integration in the
syllabus of numerical and analytical methods, the incorporation of case
studies into the curriculum and the use of micro-based software to enhance
the teaching process.
Special attention is paid to courses in Mathematical Engineering and their
position in the spectrum of engineering disciplines.
A core curriculum in mathematics for undergraduate engineers is
proposed and details are provided of its implementation. The roles of case
studies and micro-based software are highlighted. The provision of a
mathematics learning resource centre is considered a necessary feature of
the implementation of the proposed course. Finally, suggestions for
further research are made
- …