454 research outputs found
P6_4 Tee Off Into Space
Our aim in this paper was explore the possibility of hitting a gold ball into orbit around various objects inthe solar system by using the orbital velocity equation. We found this to be possible around four moons,four dwarf planet candidates and a trojan of Jupiter with masses greater than 10^18kg
P6_5 Matrioshka Brain
The Matrioshka brain is a hypothetical structure originally proposed by Robert Bradbury in 1999[1]. It consists of layers of Dyson spheres around a star, generating energy through solar panels, to power a supercomputer. In this paper we look at the amount of energy and thus computational power that could be obtained from a Matrioshka brain at our current level of technology and then go on to discuss how it would not be feasible to build said structure
This progressive production: Agency, durability and keeping it contemporary
This is an Author's Accepted Manuscript of an article published in Performance Research: A Journal of the
Performing Arts, 17(5), 71-77, 2012 [copyright Taylor & Francis], available online at:
http://www.tandfonline.com/10.1080/13528165.2012.728447.Tino Sehgal is a Berlin based Anglo-German conceptual artist who creates ‘constructed situations’; a process whereby he hands over the delivery of the work to selected ‘interpreters’ or in the case of the Tate Modern (London) 2012 commission, to ‘participants’, who he rehearses and supports to carry out the instructions which embody his vision. Each time a Sehgal work is presented, it is animated by those he has asked and paid to participate, for an audience who are often called upon to engage with a question or conversation. In taking this approach, Sehgal explicitly rejects the idea of the artist as a making of objects. However, unlike the sorts of transitory and ephemeral works of art created in the 1970s which were a deliberate challenge to the commodification of art and by extension the artist, Sehgal constructs situations for other reasons which will be explored in this article. This article will also start to consider how dependence on interpreters or participants extends, transforms or circumscribes authorial control. It will begin to consider the extent to which the construction of live artworks that potentially exceed the life time and certainly the physical presence of the maker represent long-term duration. Does such an approach extend the field of influence and the potential for lasting impact? What impact does duration have on the re-enactor/interpreters capacity to comply with the artist's instructions and what investment do they have in embodying another's artistic vision, particularly if they are required to do so for an extended period of time
Bathymetric surveying in Lake Superior: 3D modeling and sonar equipment comparing
This paper represents the overview of hydrographic surveying and different types of modern and traditional surveying equipment, and data acquisition using the traditional single beam sonar system and a modern fully autonomous underwater vehicle (AUV) IVER3. During the study, the data sets were collected using the vehicles of the Great Lake Research Center at Michigan Technological University. This paper presents how to process and edit the bathymetric data on SonarWiz5. Lastly, it compares the accuracy of the two different sonar systems in the different missions and creates 3D models to display and understand the elevations changes. Moreover, the 3D models were created after importing the data sets in the same coordinate system. In this study, the data sets were recorded by two different sensors in the two study locations in the Keweenaw Waterway in Michigan, U.S. between the cities of Houghton and Hancock. The first one equipment is the Lowrance HDS-7 sonar on the surveying boat, and other one is the EdgeTech 2205 sonar on the fully AUV of IVER3. One of the purposes of this study is to explore the sonar post processing programs, which are very important to interpret sonar and bathymetric data, and obtained the same coordinate system of the study areas. During the project, three main processing programs were used. The first one is UnderSee Explorer 2.6, which has been used to process the data sets of Polar SV boat. Secondly, EdgeTech Discover 4600 bathymetric software used EdgeTech 2205 sonar data sets to create bathymetric files that were used in SonarWiz5. Lastly, SonarWiz5 sonar processing software can be used to process the data sets. After the data acquisition and the data process, six profiles from the first study area and the five profiles from the second study are created to compare the data sets and elevations difference. It is shown that single beam sonar might miss some details, such as pipeline and quick elevation changes on seabed when we compare to the side scan sonar of IVER3 because the single side scan sonar can acquire better resolutions to understand the 3D features, such as pipelines, reliefs etc
P6_7 Spider Silk
Spiders silk is often referred to as one of the most amazing materials in nature, with its exceptional strength, able to ensnare insects much greater in size and mass than that of the spider that spun the web. In this paper we explore the idea of using a single piece of spider silk to bring a moving car to a halt. We calculated that a Ford Focus moving at 50 mph could be stopped by a single 10 m long thread with a minimum diameter of 1.88 cm
Do personality traits affect productivity?:Evidence from the lab
While survey data supports a strong relationship between personality and labor market outcomes, the exact mechanisms behind this association remain unexplored. In this paper, we take advantage of a controlled laboratory set-up to explore whether this relationship operates through productivity. Using a real-e ort task, we analyse the impact of the Big Five personality traits on performance. We nd that more neurotic subjects perform worse, and that more conscientious individuals perform better. These ndings are in line with previous survey studies and suggest that at least part of the e ect of personality on labor market outcomes operates through individual productivity. In addition, we nd evidence that gender and university major a ect the impact of the Big Five personality traits on performance
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