being professional
TRANSCRIPT
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Being Professional
محمود الباشمهندس/ الله عبدحمدي
دفعة – الحاسب علوم 2009خريج : الخريج 10074142رقم
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• Electronics• Introduction to
Computing• Computer
Programming• Statistics Methods• Math-1• Math-2• Logic Design• Electrical
Communications• Operations Research• Data Structures and
Algorithms• Information Systems• Technical English• Business
Administration
• Probabilities and Statistical Distributions.
• Math-3• Operating Systems-1• File Organization and
Processing• Computer Architecture• Computer Graphics• Networking• Software Engineering-
1• Software Engineering-
2• Artificial Intelligence• Database Systems
• Compilers Construction
• Multimedia• Advanced Multimedia.• Operating Systems-2• Natural Language
Processing• Computer Arabization• Distributed
Systems.• Image Processing.• Assembly• Neural Networks• Knowledge-Based
Systems
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• Electronics• Introduction to
Computing• Computer
Programming• Statistics Methods• Math-1• Math-2• Logic Design• Electrical
Communications• Operations Research• Data Structures and
Algorithms• Information Systems• Technical English• Business
Administration
• Probabilities and Statistical Distributions.
• Math-3• Operating Systems-1• File Organization and
Processing• Computer Architecture• Computer Graphics• Networking• Software Engineering-
1• Software Engineering-
2• Artificial Intelligence• Database Systems
• Compilers Construction
• Multimedia• Advanced Multimedia.• Operating Systems-2• Natural Language
Processing• Computer Arabization• Distributed
Systems.• Image Processing.• Assembly• Neural Networks• Knowledge-Based
Systems
Java EE
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• Electronics• Introduction to
Computing• Computer
Programming• Statistics Methods• Math-1• Math-2• Logic Design• Electrical
Communications• Operations Research• Data Structures and
Algorithms• Information Systems• Technical English• Business
Administration
• Probabilities and Statistical Distributions.
• Math-3• Operating Systems-1• File Organization and
Processing• Computer Architecture• Computer Graphics• Networking• Software Engineering-
1• Software Engineering-
2• Artificial Intelligence• Database Systems
• Compilers Construction
• Multimedia• Advanced Multimedia.• Operating Systems-2• Natural Language
Processing• Computer Arabization• Distributed
Systems.• Image Processing.• Assembly• Neural Networks• Knowledge-Based
Systems
Java EE
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Being Professional
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Professional?
• Highly educated.• Mostly salaried.• Enjoy considerable
work autonomy• Engaged in creative
and intellectually challenging work.
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Are you Professional? So…
• Define every term you know.• Read books.• Refer to references.• Think before Working.• Think before Complaining.• Do Not be Pedantic!
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Define Every Term
• Why?o Express yourself.o Talk with other professionals.o Pass interviews.o Be able to read books.
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Define Every Term
• Try Define…
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Define Every Term
• Try Define…o Computer.
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Define Every Term
• Try Define…o Computer.o Performance.
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Define Every Term
• Try Define…o Computer.o Performance.o Resource.
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Define Every Term
• Try Define…o Computer.o Performance.o Resource.o Process.
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Define Every Term
• Try Define…o Computer.o Performance.o Resource.o Process.o Application.
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Define Every Term
• Try Define…o Computer.o Performance.o Resource.o Process.o Application.o Object-Oriented.
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Read Books
• How to Read a Book? (1940 by Mortimer Adler)
o 3 distinct approaches, or readings, must all be made in order to get the most possible out of a book. (1) Structural Reading. (2) Interpretative Reading. (3) Critical Reading.
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Results to My Results
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Structural Reading
• Understanding the structure and purpose of the book.
• Begin with determining the basic topic and type of the book being read, so:o as to better anticipate the contentso comprehend the book from the very beginning.
If you will not read the book in your hands, at least read the index.
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Interpretative Reading
• Constructing the author's arguments.• This first requires the reader to note and
understand any special phrases and terms that the author uses.
• More terms you can define, more understanding to books is gained.
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Critical Reading
• Criticize the arguments.• Now you understand the content? Still not
unless you can judge the arguments.• Think about the arguments, are they
logical to you? Is there any disamiguities?
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Refer to References
• In the exhibited code, does else refer to the red if or blue if..??
if (x == y) if (y == z)out.println(“y == z”) ;elseout.println(“????”) ;
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Java Language Specification
• if rule:
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Java Language Specification
• if rule:
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Java Language Specification
• if rule:
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Java Language Specification
• if rule:
BNF
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Think before Working
• Program 1 shared variable A with program 2 by saving A’s address in a file. Program 2 reads the address of the variable A from the file, then access it. Why it reads invalid data?
1 2
Afile
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Virtual Address Space
• Virtual address space (abbreviated VAS) is a memory mapping mechanism available in modern operating systems such as OpenVMS, UNIX, Linux, and Windows NT.
• This is beneficial for different purposes, one is protection through process isolation.
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Virtual Address Space
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Virtual Memory
Program 1 Program 2
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Think before Complaining
• Is not 0.12 = exactly 0.01??!Java is Buggy!
double x = 0.1;out.println(x*x) ;//prints 0.010000000000000002 (!!!)
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Floating-Point Representation
• IEEE754.• Float: 32-bits (single-precision)• Double: 64-bits (double-precision)• Can you:
o convert 0.1 into binary? (work it out)
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Floating-Point Representation
• IEEE754.• Float: 32-bits (single-precision)• Double: 64-bits (double-precision)• Can you:
o convert 0.1 into binary? (work it out)
• Fact… There’s no exact representation for 0.1 in computer floats!
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Do Not be Pedantic!
• A program to sort an array.
for(int i = 0 ; i < arr.length-1; i++) {for(int j = i + 1; j < arr.length; j++) {if(arr[j] < arr[i]) {
int tmp = arr[i] ; arr[i] = arr[j] ; arr[j] = tmp ;
} }
}
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Do Not be Pedantic!
• Ooh!... I’m professional…!!
for(int i = 0 ; i < arr.length-1; i++)for(int j = i + 1; j < arr.length; j++)if(arr[j] < arr[i])for(int tmp=arr[i], h=0;h < 1;arr[j]=tmp, h++)arr[i] = arr[j];
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Compiler Phases
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Compiler Optimization
• Compiler optimization is the process of tuning the output of a compiler to minimize or maximize some attribute of an executable computer program.
• The most common requirement is to minimize the time taken to execute a program; a less common one is to minimize the amount of memory occupied.
• The growth of portable computers has created a market for minimizing the power consumed by a program.
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The Message“FCI makes me Professional in my work… What if I studied harder?”• An FCI graduate.
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