Maya Calendar During his last sabbatical, professor M. A. Ya made a surprising discovery about the old Maya calendar. From an old knotted message, professor discovered that the Maya civilization used a 365 day long year, called Haab, which had 19 months. Each of the first 18 months was 20 days long, and the names of the months were pop, no, zip, zotz, tzec, xul, yoxkin, mol, chen, yax, zac, ceh, mac, kankin, muan, pax, koyab, cumhu. Instead of having names, the days of the months were denoted by numbers starting from 0 to 19. The last month of Haab was called uayet and had 5 days denoted by numbers 0, 1, 2, 3, 4. The Maya believed that this month was unlucky, the court of justice was not in session, the trade stopped, people did not even sweep the floor.
標簽： A. M. sabbatical surprising
上傳時間： 2014-01-05
上傳用戶：libenshu01
CDMA has been quite successful as a second-generation cellular system,having achieved widespread use in particular in North America and Korea by the turn of the twenty-first century.
標簽： second-generation successful widespread achieved
上傳時間： 2017-06-23
上傳用戶：liuchee
ieee754的標準，原英文版的！Twenty years ago anarchy threatened floating-point arithmetic. Over a dozen commercially significant arithmetics boasted diverse wordsizes, precisions, rounding procedures and over/underflow behaviors, and more were in the works. “Portable” software intended to reconcile that numerical diversity had become unbearably costly to develop. Thirteen years ago, when IEEE 754 became official, major microprocessor manufacturers had already adopted it despite the challenge it posed to implementors. With unprecedented altruism, hardware designers had risen to its challenge in the belief that they would ease and encourage a vast burgeoning of numerical software. They did succeed to a considerable extent. Anyway, rounding anomalies that preoccupied all of us in the 1970s afflict only CRAY X-MPs — J90s now.
上傳時間： 2017-07-28
上傳用戶：894898248
This program applies Simplified DES (S-DES) Ciphering Algorithm Developed by Maimouna Al-ammar 5th Year, Computer Engineering Department, University of Damascus Information and Network Security Material
標簽： Simplified Ciphering Algorithm Developed
上傳時間： 2014-09-05
上傳用戶：源碼3
This program applies Message Digest (MD5) Algorithm Developed by Maimouna Al-ammar 5th Year, Computer Engineering Department, University of Damascus Information and Network Security Material
標簽： Algorithm Developed Al-ammar Maimouna
上傳時間： 2017-08-10
上傳用戶：13188549192
this is a document about radio frequency identification RFID, this was a project ,i have done last year ,actually this technology is a very inpotrtant one due to its relation with newest technologies , like GPS , or the miniturization of integrated circuits ,and that is described in chapter 3 . chapter 1 gives an introduction of the technology RFID , chapter 2 gives a discussion of a library using RFID , and chapter 3 is about the future of RFID , and finally the conclusion .
標簽： this identification frequency document
上傳時間： 2014-01-10
上傳用戶：gtzj
Like many of my colleagues in this industry, I learned Windows programming from Charles Petzold s Programming Windows—a classic programming text that is the bible to an entire generation of Windows programmers. When I set out to become an MFC programmer in 1994, I went shopping for an MFC equivalent to Programming Windows. After searching in vain for such a book and spending a year learning MFC the old-fashioned way, I decided to write one myself. It s the book you hold in your hands. And it s the book I would like to have had when I was learning to program Windows the MFC way.
標簽： programming colleagues industry Charles
上傳時間： 2014-01-10
上傳用戶：曹云鵬
Computing and the way people use C for doing it keeps changing as years go by. So overwhelming has been the response to all the previous editions of “Let Us C” that I have now decided that each year I would come up with a new edition of it so that I can keep the readers abreast with the way C is being used at that point in time.
標簽： overwhelming Computing changing people
上傳時間： 2013-12-23
上傳用戶：epson850
GRE 數(shù)學圣經(jīng)，下面是詳細的英文介紹： Comprehensive Prep for GRE Math Every year, students pay $1,000 and more to test prep companies to prepare for the math section of the GRE. Now you can get the same preparation in a book. Although the GRE math section is difficult, it is very learnable. GRE Math Bible presents a thorough analysis of GRE math and introduces numerous analytic techniques that will help you immensely, not only on the GRE but in graduate school as well.
標簽： GRE Math 數(shù)學
上傳時間： 2015-08-22
上傳用戶：東大寺的
This book has grown out of my teaching and research at the University of Surrey and out of my previous experiences in companies such as Philips, Ascom and Motorola. It is primarily intended for use by students in master’s level and enhanced final-year under- graduate courses who are specialising in communication systems and wish to understand the principles and current practices of the wireless communication channel, including both antenna and propagation aspects
標簽： Propagation Antennas
上傳時間： 2020-05-26
上傳用戶：shancjb
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