Hampshire College

About: Hampshire College is a education organization based out in Amherst Center, Massachusetts, United States. It is known for research contribution in the topics: Genetic programming & Population. The organization has 461 authors who have published 998 publications receiving 40827 citations.

Mercury's Surface: Preliminary Description and Interpretation from Mariner 10 Pictures.

Abstract: The surface morphology and optical properties of Mercury resemble those of the moon in remarkable detail and record a very similar sequence of events. Chemical and mineralogical similarity of the outer layers of Mercury and the moon is implied; Mercury is probably a differentiated planet with a large iron-rich core. Differentiation is inferred to have occurred very early. No evidence of atmospheric modification of landforms has been found. Large-scale scarps and ridges unlike lunar or martian features may reflect a unique period of planetary compression near the end of heavy bombardment by small planetesimals.

Acrophile: an automated acronym extractor and server

Abstract: We implemented a web server for acronym and abbreviation lookup, containing a collection of acronyms and their expansions gathered from a large number of web pages by a heuristic extraction process. Several different extraction algorithms were evaluated and compared. The corpus resulting from the best algorithm is comparable to a high-quality hand-crafted site, but has the potential to be much more inclusive as data from more web pages are processed.

Operating Systems Design and Implementation (3rd Edition)

Abstract: ion is the key to managing complexity. Good abstractions turn a nearly impossible task into two manageable ones. The first one of these is defining and^aglementing the abstractions. The second one is using these abstractions to sol^He problem at hand. One abstraction that almost every computer user understands is the file. It is a useful piece of information, such as a digital photo, SEC. 1.1 WHAT IS AN OPERATING SYSTEM? 5 saved e-mail message, or Web page. Dealing with photos, e-mails, and Web pages is easier than the details of disks, such as the floppy disk described above. The job of the operating system is to create good abstractions and then implement and manage the abstract objects thus created. In this book, we will talk a lot about abstractions. They are one of the keys to understanding operating systems. This point is so important that it is worth repeating in different words. With all due respect to the industrial engineers who designed the Macintosh, hardware is ugly. Real processors, memories, disks, and other devices are very complicated and present difficult, awkward, idiosyncratic, and inconsistent interfaces to the people who have to write software to use them. Sometimes this is due to the need for backward compatibility with older hardware, sometimes due to a desire to save money, but sometimes the hardware designers do not realize (or care) how much trouble they are causing for the software. One of the major tasks of the operating system is to hide the hardware and present programs (and their programmers) with nice, clean, elegant, consistent, abstractions to work with instead. Operating systems turn the ugly into the beautiful, as shown in Fig. 1-2. Application programs