Selected Writings on Computing: A personal Perspective

Selected Writings on Computing: A personal Perspective

Author: Edsger W. Dijkstra

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 381

ISBN-13: 146125695X

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Since the summer of 1973, when I became a Burroughs Research Fellow, my life has been very different from what it had been before. The daily routine changed: instead of going to the University each day, where I used to spend most of my time in the company of others, I now went there only one day a week and was most of the time -that is, when not travelling!- alone in my study. In my solitude, mail and the written word in general became more and more important. The circumstance that my employer and I had the Atlantic Ocean between us was a further incentive to keep a fairly complete record of what I was doing. The public part of that output found its place in what became known as "the EWD series", which can be viewed as a form of scientific correspondence, possible since the advent of the copier. (That same copier makes it hard to estimate its actual distribution: I myself made about two dozen copies of my texts, but their recipients were welcome to act as further nodes of the distribution tree. ) The decision to publish a se1ection from the EWD series in book form was at first highly embarrassing, but as the months went by I got used to the idea. As soon as some guiding principles had been adopted -preferably not published elsewhere, as varied and as representative as possible, etc.


Selected Writings on Computing: A Personal Perspective

Selected Writings on Computing: A Personal Perspective

Author: Edsger W. Dijkstra

Publisher: Springer

Published: 1982-10-25

Total Pages: 392

ISBN-13:

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Stepwise program construction. Parallelism in multi-record transactions. Finding the maximum strong components in a directed granph. trip reporte E.W.Dijkstra, summer school munich. The solution to a cyclic relaxation problem. Trip reporte IBM seminar "communication and computers". Self-stabilization in spite of distributed control. Acceptance speech for the AFIPS harry goode memorial award 1974. Speech at the occasion of an anniversary. Inside "mathematics inc". A multidisciplinary approach to mathematics. Ond the role of scientific thought. A time-wise hierarchy imposed upon the use of a two-level store. A new elephant built from mosquitoes humming in harmony. Monotonic replacement algorithms and their implementation. Trip report E.W.Dijkstra. Trip report visit ETH Zurich. A letter to my old friend Jonathan. "Craftsman or scientist?". Exercises in making programs robust. Trip report E.W.Dijkstra. how do we tell truths that might hurt?. Variation on a theme: an open letter to C.A.R hoare. A post-scriptum to EWD501. Erratum and embellishmething . A synthesis merging?. Commets at a symposium. Trip report E.W.Dijkstra. On a warning from E.A.Hauch. More on auck's warning. A collection of beautiful proofs. Mathematics inc., a private letter from its chairman. A personal summary of the gries-owicki theory. A "non Trip report". Formal techniques and sizearble programs. An exercises for Dr.R.M.Burstall. A great improvement. To H.D.Mills, chairman software methodology panel. On subgoal induction. Trip report E.W.Dijkstra. More about the function. A proof of a theorem communicated to us. Trip report E.W.Dijkstra. A parable. Trip report E.W.Dijkstra. A correctness proof for communicating processes: a small exercise. An elephant inspered by the dutch national flag. On the fact the atlantic ocean has two sides. Trip report E.W.Dijkstra. A somewhat open letter to EAA. On webster, users, bugs, and aristotle, On making solution more and more fine-grained. The mathematics behind the banker's algorithm. On two beautiful solutions designed by martin rem. Trip report E.W.Dijkstra. why naive program transformation systems are unlikely to word. The three golden rules for successful scientific research. The introduction of MAES. A class of simple communication patterns. "Why is software so expensive?" an explanation to the hardware designer. A theorem about odd powes of odd integers. Porgram inversion. On weak and strong termination. The equivalence of bounded nondeterminacy and continuity. A story that starts with a very good computer.


Edsger Wybe Dijkstra

Edsger Wybe Dijkstra

Author: Krzysztof R. Apt

Publisher: Morgan & Claypool

Published: 2022-07-14

Total Pages: 576

ISBN-13: 1450397743

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Edsger Wybe Dijkstra (1930–2002) was one of the most influential researchers in the history of computer science, making fundamental contributions to both the theory and practice of computing. Early in his career, he proposed the single-source shortest path algorithm, now commonly referred to as Dijkstra’s algorithm. He wrote (with Jaap Zonneveld) the first ALGOL 60 compiler, and designed and implemented with his colleagues the influential THE operating system. Dijkstra invented the field of concurrent algorithms, with concepts such as mutual exclusion, deadlock detection, and synchronization. A prolific writer and forceful proponent of the concept of structured programming, he convincingly argued against the use of the Go To statement. In 1972 he was awarded the ACM Turing Award for “fundamental contributions to programming as a high, intellectual challenge; for eloquent insistence and practical demonstration that programs should be composed correctly, not just debugged into correctness; for illuminating perception of problems at the foundations of program design.” Subsequently he invented the concept of self-stabilization relevant to fault-tolerant computing. He also devised an elegant language for nondeterministic programming and its weakest precondition semantics, featured in his influential 1976 book A Discipline of Programming in which he advocated the development of programs in concert with their correctness proofs. In the later stages of his life, he devoted much attention to the development and presentation of mathematical proofs, providing further support to his long-held view that the programming process should be viewed as a mathematical activity. In this unique new book, 31 computer scientists, including five recipients of the Turing Award, present and discuss Dijkstra’s numerous contributions to computing science and assess their impact. Several authors knew Dijkstra as a friend, teacher, lecturer, or colleague. Their biographical essays and tributes provide a fascinating multi-author picture of Dijkstra, from the early days of his career up to the end of his life.


On a Method of Multiprogramming

On a Method of Multiprogramming

Author: W.H.J. Feijen

Publisher: Springer Science & Business Media

Published: 1999-06-11

Total Pages: 396

ISBN-13: 9780387988702

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Here, the authors propose a method for the formal development of parallel programs - or multiprograms as they prefer to call them. They accomplish this with a minimum of formal gear, i.e. with the predicate calculus and the well- established theory of Owicki and Gries. They show that the Owicki/Gries theory can be effectively put to work for the formal development of multiprograms, regardless of whether these algorithms are distributed or not.


Solving Mathematical Problems

Solving Mathematical Problems

Author: Terence Tao

Publisher: OUP Oxford

Published: 2006-07-28

Total Pages: 116

ISBN-13: 0191568694

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Authored by a leading name in mathematics, this engaging and clearly presented text leads the reader through the tactics involved in solving mathematical problems at the Mathematical Olympiad level. With numerous exercises and assuming only basic mathematics, this text is ideal for students of 14 years and above in pure mathematics.


From Naked Ape to Superspecies

From Naked Ape to Superspecies

Author: David Suzuki

Publisher: Greystone Books Ltd

Published: 2009-07-01

Total Pages: 416

ISBN-13: 1926685199

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For millennia, we lived in harmony with the Earth, taking only what we required to survive. But in just the past few centuries, we have used our powers to satisfy our obsession with consumption and new technology, without regard for the consequences. And in doing so, we have exploited our surroundings on an unprecedented scale. In this revised and updated edition of From Naked Ape to Superspecies, David Suzuki and Holly Dressel lucidly describe how we have evolved beyond our needs, trampling other species, believing that we can make the Earth work the way we want it to. And they introduce us to the people who are fighting back, those who are resisting the inexorable advance of the "global economy" juggernaut, the people whose voices are difficult to hear over the din of corporate public relations machines. We learn about how human arrogance—demonstrated by our disregard for the small and microscopic species that constitute the Earth’s engine and our reckless use of technological inventions like powerful herbicides or genetically engineered crops—is threatening the health of our children and the safety of our food supply.


A Discipline of Programming

A Discipline of Programming

Author: Edsger W. Dijkstra

Publisher: Prentice Hall

Published: 1976

Total Pages: 248

ISBN-13:

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Executional abstraction; The role of programming languages; States and their characterization; The characterization of semantics; The semantic characterization of a programming language; Two theorems; On the design of properly terminating; Euclid's algorithm revisited; The formal treatment of some small examples; The linear search theorem; The problem of the next permutation.


Computational Thinking: A Perspective on Computer Science

Computational Thinking: A Perspective on Computer Science

Author: Zhiwei Xu

Publisher: Springer Nature

Published: 2022-01-01

Total Pages: 338

ISBN-13: 9811638489

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This textbook is intended as a textbook for one-semester, introductory computer science courses aimed at undergraduate students from all disciplines. Self-contained and with no prerequisites, it focuses on elementary knowledge and thinking models. The content has been tested in university classrooms for over six years, and has been used in summer schools to train university and high-school teachers on teaching introductory computer science courses using computational thinking. This book introduces computer science from a computational thinking perspective. In computer science the way of thinking is characterized by three external and eight internal features, including automatic execution, bit-accuracy and abstraction. The book is divided into chapters on logic thinking, algorithmic thinking, systems thinking, and network thinking. It also covers societal impact and responsible computing material – from ICT industry to digital economy, from the wonder of exponentiation to wonder of cyberspace, and from code of conduct to best practices for independent work. The book’s structure encourages active, hands-on learning using the pedagogic tool Bloom's taxonomy to create computational solutions to over 200 problems of varying difficulty. Students solve problems using a combination of thought experiment, programming, and written methods. Only 300 lines of code in total are required to solve most programming problems in this book.


Code Reading

Code Reading

Author: Diomidis Spinellis

Publisher: Addison-Wesley Professional

Published: 2003

Total Pages: 530

ISBN-13: 9780201799408

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CD-ROM contains cross-referenced code.


An Introduction to Formal Language Theory

An Introduction to Formal Language Theory

Author: Robert N. Moll

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 214

ISBN-13: 146139595X

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The study of formal languages and of related families of automata has long been at the core of theoretical computer science. Until recently, the main reasons for this centrality were connected with the specification and analy sis of programming languages, which led naturally to the following ques tions. How might a grammar be written for such a language? How could we check whether a text were or were not a well-formed program generated by that grammar? How could we parse a program to provide the structural analysis needed by a compiler? How could we check for ambiguity to en sure that a program has a unique analysis to be passed to the computer? This focus on programming languages has now been broadened by the in creasing concern of computer scientists with designing interfaces which allow humans to communicate with computers in a natural language, at least concerning problems in some well-delimited domain of discourse. The necessary work in computational linguistics draws on studies both within linguistics (the analysis of human languages) and within artificial intelligence. The present volume is the first textbook to combine the topics of formal language theory traditionally taught in the context of program ming languages with an introduction to issues in computational linguistics. It is one of a series, The AKM Series in Theoretical Computer Science, designed to make key mathematical developments in computer science readily accessible to undergraduate and beginning graduate students.