[PDF] Solar Discrepancies

Solar Discrepancies PDF
Author: Zara Lenora Mirmalek
Publisher:
ISBN:
Size: 44.83 MB
Format: PDF, ePub, Mobi
Category : Mars (Planet)
Languages : en
Pages : 225
View: 157

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Solar Discrepancies

by Zara Lenora Mirmalek, release date 2008, Solar Discrepancies Books available in PDF, EPUB, Mobi Format. Download Solar Discrepancies books, The inter-planetary work system for the NASA's Mars Exploration Rovers (MER) mission entailed coordinating work between two corporally diverse workgroups, human beings and solar-powered robots, and between two planets with asynchronous axial rotations. The rotation of Mars takes approximately 24 hours and 40 minutes while for Earth the duration is 24 hours, a differential that was synchronized on Earth by setting a clock forward forty minutes every day. The hours of the day during which the solar-powered rovers were operational constituted the central consideration in the relationship between time and work around which the schedule of MER science operations were organized. And, the operational hours for the rovers were precarious for at least two reasons: on the one hand, the possibility of a sudden and inexplicable malfunction was always present; on the other, the rovers were powered by solar-charged batteries that could simply (and would eventually) fail. Thus, the timetable for the inter-planetary work system was scheduled according to the daily cycle of the sun on Mars and a version of clock time called Mars time was used to keep track of the movement of the sun on Mars. While the MER mission was a success, it does not necessarily follow that all aspects of mission operations were successful. One of the central problems that plagued the organization of mission operations was precisely this construct called "Mars time" even while it appeared that the use of Mars time was unproblematic and central to the success of the mission. In this dissertation, Zara Mirmalek looks at the construction of Mars time as a tool and as a social process. Of particular interest are the consequences of certain (ostensibly foundational) assumptions about the relationship between clock time and the conduct of work that contributed to making the relationship between Mars time and work on Earth appear operational. Drawing on specific examples of breakdowns of Mars time as a support technology and of the technologies supporting Mars time, Mirmalek explores some of the effects that follow from failing to recognize time as a socio-cultural construction that emerges, fundamentally, in and through a physical relationship between the environment and the human body. In this investigation of Mars time as a phenomenon comprised of several contradictory logics, Mirmalek takes into account several aspects of the social, technical, and cultural processes constituting the relationship between time and work at NASA and specifically on the MER mission.




[PDF] Working On Mars

Working on Mars PDF
Author: William J. Clancey
Publisher: MIT Press
ISBN: 0262304783
Size: 25.13 MB
Format: PDF
Category : Science
Languages : en
Pages : 328
View: 1338

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Working On Mars

by William J. Clancey, release date 2012-09-07, Working On Mars Books available in PDF, EPUB, Mobi Format. Download Working On Mars books, What it's like to explore Mars from Earth: How the Mars rovers provide scientists with a virtual experience of being on Mars. Geologists in the field climb hills and hang onto craggy outcrops; they put their fingers in sand and scratch, smell, and even taste rocks. Beginning in 2004, however, a team of geologists and other planetary scientists did field science in a dark room in Pasadena, exploring Mars from NASA's Jet Propulsion Laboratory (JPL) by means of the remotely operated Mars Exploration Rovers (MER). Clustered around monitors, living on Mars time, painstakingly plotting each movement of the rovers and their tools, sensors, and cameras, these scientists reported that they felt as if they were on Mars themselves, doing field science. The MER created a virtual experience of being on Mars. In this book, William Clancey examines how the MER has changed the nature of planetary field science. Drawing on his extensive observations of scientists in the field and at the JPL, Clancey investigates how the design of the rover mission enables field science on Mars, explaining how the scientists and rover engineers manipulate the vehicle and why the programmable tools and analytic instruments work so well for them. He shows how the scientists felt not as if they were issuing commands to a machine but rather as if they were working on the red planet, riding together in the rover on a voyage of discovery. Learn more about the book here: http://www.youtube.com/watch?v=oZQSWSZnTYs&feature=youtube_gdata




[PDF] Placing Outer Space

Placing Outer Space PDF
Author: Lisa Messeri
Publisher: Duke University Press
ISBN: 0822373912
Size: 80.61 MB
Format: PDF, Kindle
Category : Social Science
Languages : en
Pages : 248
View: 585

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Placing Outer Space

by Lisa Messeri, release date 2016-09-22, Placing Outer Space Books available in PDF, EPUB, Mobi Format. Download Placing Outer Space books, In Placing Outer Space Lisa Messeri traces how the place-making practices of planetary scientists transform the void of space into a cosmos filled with worlds that can be known and explored. Making planets into places is central to the daily practices and professional identities of the astronomers, geologists, and computer scientists Messeri studies. She takes readers to the Mars Desert Research Station and a NASA research center to discuss ways scientists experience and map Mars. At a Chilean observatory and in MIT's labs she describes how they discover exoplanets and envision what it would be like to inhabit them. Today’s planetary science reveals the universe as densely inhabited by evocative worlds, which in turn tells us more about Earth, ourselves, and our place in the universe.




[PDF] Seeing Like A Rover

Seeing Like a Rover PDF
Author: Janet Vertesi
Publisher: University of Chicago Press
ISBN: 022615601X
Size: 53.97 MB
Format: PDF
Category : Science
Languages : en
Pages : 304
View: 6501

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Seeing Like A Rover

by Janet Vertesi, release date 2015-04-22, Seeing Like A Rover Books available in PDF, EPUB, Mobi Format. Download Seeing Like A Rover books, In the years since the Mars Exploration Rover Spirit and Opportunity first began transmitting images from the surface of Mars, we have become familiar with the harsh, rocky, rusty-red Martian landscape. But those images are much less straightforward than they may seem to a layperson: each one is the result of a complicated set of decisions and processes involving the large team behind the Rovers. With Seeing Like a Rover, Janet Vertesi takes us behind the scenes to reveal the work that goes into creating our knowledge of Mars. Every photograph that the Rovers take, she shows, must be processed, manipulated, and interpreted—and all that comes after team members negotiate with each other about what they should even be taking photographs of in the first place. Vertesi’s account of the inspiringly successful Rover project reveals science in action, a world where digital processing uncovers scientific truths, where images are used to craft consensus, and where team members develop an uncanny intimacy with the sensory apparatus of a robot that is millions of miles away. Ultimately, Vertesi shows, every image taken by the Mars Rovers is not merely a picture of Mars—it’s a portrait of the whole Rover team, as well.




[PDF] Positioning With Gps 1985

Positioning with GPS 1985 PDF
Author:
Publisher:
ISBN:
Size: 41.94 MB
Format: PDF, Docs
Category : Artificial satellites
Languages : en
Pages :
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Positioning With Gps 1985

by , release date 1985, Positioning With Gps 1985 Books available in PDF, EPUB, Mobi Format. Download Positioning With Gps 1985 books,




[PDF] Proceedings Of The 20th National Passive Solar Conference Minneapolis Minnesota July 15 20 1995

Proceedings of the 20th National Passive Solar Conference  Minneapolis  Minnesota  July 15 20  1995 PDF
Author: American Solar Energy Society
Publisher: American Solar Energy Society, Incorporated
ISBN: 9780895532107
Size: 27.74 MB
Format: PDF, ePub, Mobi
Category : Solar air conditioning
Languages : en
Pages : 339
View: 664

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Proceedings Of The 20th National Passive Solar Conference Minneapolis Minnesota July 15 20 1995

by American Solar Energy Society, release date 1995, Proceedings Of The 20th National Passive Solar Conference Minneapolis Minnesota July 15 20 1995 Books available in PDF, EPUB, Mobi Format. Download Proceedings Of The 20th National Passive Solar Conference Minneapolis Minnesota July 15 20 1995 books,




[PDF] Hebraica

Hebraica PDF
Author:
Publisher:
ISBN:
Size: 15.57 MB
Format: PDF, ePub, Docs
Category : Hebrew philology
Languages : en
Pages :
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Hebraica

by , release date 1892, Hebraica Books available in PDF, EPUB, Mobi Format. Download Hebraica books,