AUV location detection in an enclosed environment

Normally, experiments are done in a controlled environment so that different systems under test can be isolated. The added benefit is that the sensors used are a lot more accurate under controlled conditions. In the experiments perform on underwater robot localization, this was not the case. The sonar localization equipment use perform flawlessly in open water as it was designed to do, but poorly in an indoor pool. It is believed that the sonar had too much power causing too many reflections in the enclosed space. Unfortunately the experiments are better done in a pool so as to control the elements under test. This paper is the search to improve the equipment\u27s accuracy in an enclosed environment by attempting to reduce the power of the sonar via mechanical means

The use of home experimentation kits for distance students in first-year undergraduate electronics

Laboratory and practical classes are an important part of the education of students in electronics and electrical engineering. &quot;Hands-on&quot; experience is critical for any engineer working in these fields in particular. For many years, delivering engineering practicals to distance-education students has been a tremendous challenge for universities. For a number of years now, students enrolled in the common first-year electronics course by distance mode at Deakin University have received a home experimentation kit. Using the kit and a laboratory manual, students are required to complete a number of experiments based on components included in the kit. The kit supports a full range of practical activities for digital electronics, and a more limited range of activities for analog electronics. With the kit, off campus students are supplied software for simulating AC electronic circuits, such as amplifiers and rectifiers. In this report we examine the past use of this kit and software,review anecdotal student experiences with the package, and propose changes to it and to other curriculum resources, aiming to enhance the use of the kit by distance students. Key curriculum resources planned are a web-based \u27companion\u27 for the components in and the use of the kit, and two additions to the kit itself: a battery powered function generator, and a PC-based oscilloscope.<br /

Learning through projects in engineering education

[No abstract available

Enhancing learning for distance students in an Undergraduate engineering course through real-time web-conferencing

On-line education in engineering has attracted a great deal of interest in recent years. One of the difficulties faced in an on-line engineering program is how to ensure effective communication between lecturers and students, and among the students themselves.Techniques common ten years ago such as email, lecture notes posted to websites, and telephone conversations, are now seen as archaic when compared with opportunities offered by more modern communication technologies, such as real-time web-conferencing.We present our efforts to use the web-conferencing software Elluminate-Live! for delivering tutorials, discussion classes, and even laboratory practicals to groups of students studying engineering off-campus, including students posted overseas. Examples are given from two disciplines. We then compare student feedback across all engineering subjects over the years 2012-2013. Our results show that students welcome web-conferencing as a very effectivemeans to deliver classes to distance students and improve their learning experience

Frontal sinuses and human evolution

The frontal sinuses are cavities inside the frontal bone located at the junction between the face and the cranial vault and close to the brain. Despite a long history of study, understanding of their origin and variation through evolution is limited. This work compares most hominin species? holotypes and other key individuals with extant hominids. It provides a unique and valuable perspective of the variation in sinuses position, shape, and dimensions based on a simple and reproducible methodology. We also observed a covariation between the size and shape of the sinuses and the underlying frontal lobes in hominin species from at least the appearance of Homo erectus. Our results additionally undermine hypotheses stating that hominin frontal sinuses were directly affected by biomechanical constraints resulting from either chewing or adaptation to climate. Last, we demonstrate their substantial potential for discussions of the evolutionary relationships between hominin species. Variation in frontal sinus shape and dimensions has high potential for phylogenetic discussion when studying human evolution

Hominin homelands of East Java: revised stratigraphy and landscape reconstructions for Plio-Pleistocene Trinil

Bioarchaeolog

Controlled experiments in lithic technology and function

From the earliest manifestations of tool production, technologies have played a fundamental role in the acquisition of different resources and are representative of daily activities in the lives of ancient humans, such as hunting (stone-tipped spears) and meat processing (chipped stone tools) (Lombard 2005; McPherron et al. 2010; Lombard and Phillipson 2010; Brown et al. 2012; Wilkins et al. 2012; Sahle et al. 2013; Joordens et al. 2015; Ambrose 2001; Stout 2001). Yet many questions remain, such as how and why technological changes took place in earlier populations, and how technological traditions, innovations, and novelties enabled hominins to survive and disperse across the globe (Klein 2000; McBrearty and Brooks 2000; Henshilwood et al. 2001; Marean et al. 2007; Brown et al. 2012; Režek et al. 2018).Projekt DEALinfo:eu-repo/semantics/publishedVersio

The impact of recent and long-term experience on access to word meanings: Evidence from large-scale internet-based experiments

Many word forms map onto multiple meanings (e.g., ‘‘ace”). The current experiments explore the extent to which adults reshape the lexical–semantic representations of such words on the basis of experience, to increase the availability of more recently accessed meanings. A naturalistic web-based experiment in which primes were presented within a radio programme (Experiment 1; N = 1800) and a lab-based experiment (Experiment 2) show that when listeners have encountered one or two disambiguated instances of an ambiguous word, they then retrieve this primed meaning more often (compared with an unprimed control condition). This word-meaning priming lasts up to 40 min after exposure, but decays very rapidly during this interval. Experiments 3 and 4 explore longer term word-meaning priming by measuring the impact of more extended, naturalistic encounters with ambiguous words: recreational rowers (N = 213) retrieved rowing related meanings for words (e.g., ‘‘feather”) more often if they had rowed that day, despite a median delay of 8 hours. The rate of rowing-related interpretations also increased with additional years’ rowing experience. Taken together these experiments show that individuals’ overall meaning preferences reflect experience across a wide range of timescales from minutes to years. In addition, priming was not reduced by a change in speaker identity (Experiment 1), suggesting that the phenomenon occurs at a relatively abstract lexical–semantic level. The impact of experience was reduced for older adults (Experiments 1, 3, 4) suggesting that the lexical–semantic representations of younger listeners may be more malleable to current linguistic experience