y-intercepts: y = 0 * Maximum points: (pi/2 + 2 k pi ‚ 1) ‚ where k is an integer. * Minimum points: (3pi/2 + 2 k pi ‚ -1) ‚ where k is an integer. * Symmetry: since sin(-x) = - sin (x) then sin (x) is an odd function and its graph is symmetric with respect to the origin (0 ‚ 0). * Intervals of increase/decrease: over one period and from 0 to 2pi‚ sin (x) is increasing on the intervals (0‚ pi/2) and (3pi/2 ‚ 2pi)‚ and decreasing on the interval (pi/2 ‚ 3pi/2). Cosine Function : f(x)
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the other hardware components within a computing system such as: 1. System interconnects such as computer buses and switches 2. Memory controllers and hierarchies 3. CPU off-load mechanisms such as direct memory access (DMA) 4. Issues like multiprocessing. Computer architecture: the definition The coordination of abstract levels of a processor under changing forces‚ involving design‚ measurement and evaluation. It also includes the overall fundamental working principle of the internal logical
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Exercise 8: Compare and contrast multiprocessing and concurrent processing. Describe the role of process synchronization for both systems. Exercise 10: SEE ANSWERS Exercise 13: SEE ANSWERS Advanced Exercise 16: SEE ANSWERS ANSWERS: Exercise 2: a. Example of Deadlock: When two people are about to buy the same product at the same time. b. Example of Starvation: When one person borrowed a pen from his classmate and his classmate gets his pen back. c. Example of Race:
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Aerodynamic Force of Cambered and Symmetric Airfoils CAMBERED AIRFOIL Increasing angle of attack on any airfoil causes the area of the streamtube above the wing to decrease. This produces a greater velocity increase above the wing than below the wing. The greater velocity increases the pressure differential on a cambered airfoil. The greater pressure differential on the airfoil will increase the magnitude of the aerodynamic force. SYMMETRIC AIRFOIL Increasing angle
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key to decrypt the information sent. A user must have a secret key to unlock the information. Explain the difference between symmetric and asymmetric keys. Symmetric and asymmetric keys are very similar in their use. With symmetric keys‚ both the sender and the receiver use the same secret key for encryption and decryption. One of the drawbacks with symmetric keys is that if the key is compromised on one end‚ it is compromised on both ends. With asymmetric keys‚ also known as public key
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Lectures) Communications using symmetric cryptography‚ one-way hash functions‚ communications using public-key cryptography‚ digital signatures‚ Basic Protocols: (2 lectures) Key exchange‚ authentication‚ secret splitting‚ secret sharing‚ cryptographic protection of databases‚ Intermediate Protocols: (2 lectures) Time stamping services‚ subliminal channel‚ undeniable digital signatures‚ Key Length: (2 lecture) Symmetric key length‚ public-key key length‚ comparing symmetric and public-key key length
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CRYPTOGRAPHY- ENCRYPTION AND DECRYPTION Cryptography is the practice and study of techniques for secure communication in the presence of third parties (called adversaries). More generally‚ it is about constructing and analyzing protocols that overcome the influence of adversaries and which are related to various aspects in information security such as data confidentiality‚ integrity‚ authentication‚ and non-repudiation. Modern cryptography intersects the disciplines of mathematics‚ computer science
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WHY IS DEATH BAD? 217 I am an exile from some country‚ where I have left my widowed mother. Though I am deeply concerned about her‚ I very seldom get news. I have known for some time that she is fatally ill‚ and cannot live long. I am now told something new. My mother’s illness has become very painful‚ in a way that drugs cannot relieve. For the next few months‚ before she dies‚ she faces a terrible ordeal. That she will soon die I already knew. But I am deeply distressed to learn of the suffering
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1. Frequency Division Multiplexing Frequency Division Multiplexing is a technique that can be applied when bandwidth of the link is greater than combined bandwidth of signals to be transmitted. Frequency Division Multiplexing technique is the process of translating the frequency of individual channel into per-assigned frequency slots within the bandwidth of the transmission medium. Different carries frequencies are assigned to different users. We can use any modulation scheme to assign carrier
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These internal forces create stress and strain that could result in failure or deformation. This lab looked at how an aluminum cantilevered beam performed under symmetric and unsymmetrical bending as well as the stresses and strains developed as a result. Objective “To study the stress and strain induced in an I-beam under symmetric and unsymmetrical bending” [2]. Theory: σ – Normal stress (Mpa) ε – Strain (mm/mm) M – Moment (kN∙m) I – Moment of inertia (mm^6) E – Modulus of elasticity
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