sas macro for sample size and accrual duration
Design and analysis of object allocation and replication algorithms in distributed databases for stationary and mobile computing systems
Ngày tải lên :
16/09/2015, 17:11
... read/write request and k=10, 30, and 50 104 5.7 Average cost for servicing a request when each node has the same probability of read/write request and the request window size k=10, 30, and 50 in ... reliability issue for ADRW algorithm in terms of the failure and recovery 3.1 Preliminaries and Problem Formulation As far as object allocation and replication issues are concerned, both static and dynamic ... allocation and replication strategies for DDBSs In conclusion, our research contribution lies in designing adaptive object allocation and replication algorithms and evaluating their performance...
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Design and analysis of object replacement policies on dynamic data allocation and replication algorithm with buffer constraints
Ngày tải lên :
04/10/2015, 10:24
... LRUhet has to maintain both the bt (i) and size( i) information for every object Let sizet (j) be the size of new object j to be saved in the memory at time t and sp(t) be the available space at ... available for new object j, and we purge all the objects u1 , u2 , u3 , , ur and save the object j into the resident set Set(t + 1) Finally, LRUhet initializes bt+1 (j) and l f lag(j) for object j and ... locations for performance, reliability and availability reasons [2, 9, 10] The object is accessed, i.e read or written, from multiple distributed processors These reads and writes form a set...
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Báo cáo hóa học: " Research Article Design and Analysis of an Energy-Saving Distributed MAC Mechanism for Wireless Body Sensor Networks" doc
Ngày tải lên :
21/06/2014, 11:20
... Journal on Wireless Communications and Networking other MAC potential candidates for future BSNs [2, 6–18], which might be potential candidates for other BSN-targeted standardization bodies, such as ... increases, and different curves are shown for data payload lengths (L) of 80, 100 and 120 bytes Here, the excellent protocol performance can be seen even for the highest traffic load between 80% and 90%, ... sequence (PRE) of duration tPRE after a period in idle mode Thereafter, it receives the required system information via the FBP of duration tFBP for updating its distributed queues, CRQ and DTQ [15]...
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Báo cáo hóa học: " Design and Analysis of Nanotube-Based Memory Cells" ppt
Ngày tải lên :
22/06/2014, 01:20
... as particles During the simulation, the outer tube is fixed and has no deformation We first assume that the inner tube is deformable Therefore, the following equations of motion are solved at each ... the displacement of particle I, and f int is the internal nodal I force applied on particle I due to the deformation of the nanotube itself The external nodal force, f ext , contains two I parts ... paper is a subject of much ongoing research CNT geometric uniformity and the ability to position CNTs in a regular array suitable for addressing as a RAM memory cell are both issues that remain...
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Báo cáo hóa học: " Research Article Design and Analysis of the First BOWS Contest" potx
Ngày tải lên :
22/06/2014, 19:20
... 06/12/06 04/11/06 Participant Andreas Westfeld Andreas Westfeld Andreas Westfeld Andreas Westfeld Michel Chekrallah Jonathan Vayn R.Vigoulette-S.Francfort R.Vigoulette-S.Francfort Bakhtiari Ahmad-Reza ... overload the server Andreas Westfeld at the end of the contest obtained excellent values of the PSNR: for the image Strawberry 60.74 dB, for the image Wood Path 57.05 dB, and for the image Church ... with different visual characteristics (Strawberry, Wood Path, and Church shown in Figure 4) in raw format and size 512 × 512, were chosen for watermarking The three images were selected so to represent...
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Báo cáo hóa học: " Cross-Layer Design and Analysis of Downlink Communications in Cellular CDMA Systems" docx
Ngày tải lên :
22/06/2014, 22:20
... power PG ) set aside for handoffs By “simultaneously” we mean while the BS is still handling one handoff request, another one or several requests may emerge, and so forth over and over This is especially ... power for handoff (due to a higher γd ) to ensure fairness For convenience, we set μ = for ordinary users and μ ∈ (0, 1) for marginal users Dedicated surveys on fade margin improvement and delicate ... topology for TCP proposal (b) Network topology for TCP-over-wireless simulations Figure 7: Network topologies for TCP proposal and simulations each scheduling cycle and updating of the information for...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 2 ppt
Ngày tải lên :
12/08/2014, 16:21
... achieved? IMPORTANT Choosing first an entity uniformly at random and then choosing an item uniformly at random in the set stored there will NOT give a uniformly random choice from the entire set (Exercise2.9.51) ... x) messages and 2r(s) + dT (s, x) ideal time units Prove both correctness and complexity Exercise 2.9.51 Show why choosing uniformly at random a site and then choosing uniformly at random an element ... intermediate destination chosen at random and then delivered from there to the final destination The same random selection is made, for example, for coordination of a computation, for control of a resource,...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 4 docx
Ngày tải lên :
12/08/2014, 16:21
... stage i + (and thus both y and z are defeated); it will prepare an election message for the candidates in both directions, say u and v, and will send it directly to y and to z As before, x does ... stage(x) and proceeds with its conquest Notice that each attempt from a candidate costs exactly two messages (one for the Capture, one for the notification) if the neighbor is also a candidate ... following: As the links labeled and n − form a ring, the entities could ignore all the other links and execute on this subnet an election protocol for rings, for example, Stages This approach...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 6 potx
Ngày tải lên :
12/08/2014, 16:21
... (i) and K(i) Each entity, upon receiving this information, will locally perform the reduction (if any) of the local elements and then include in the convergecast the information about the size ... at most ⌬ and each entity has at most ⌬ items; this is, for example, the result of applying Tools and described before Thus, the search space contains at most ⌬2 items For simplicity, and without ... OPERATIONS and Michael Rodeh [21] Nicola Santoro, Jeffrey Sidney, and Stuart Sidney designed Protocol RandomFlipSelect [19] Protocol RandomRandomSelect is due to Nicola Santoro, Michael Scheutzow, and...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 7 docx
Ngày tải lên :
12/08/2014, 16:21
... can perform operations whose result is random, for example, tossing a dice, and where the nature of the action depends on outcome of this random event For example, an entity can toss a coin and, ... result If the result of AND is 1, all the entities have value and are in state minimum, and thus know the result If the result of AND MIN-FINDING AND ELECTION: WAITING AND GUESSING 367 is 0, the ... function Computing AND and OR Consider the situation where every entity x has a Boolean value b(x) ∈ {0, 1}, and we need to compute the AND of all those values Assume as before that the size n of the...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 8 doc
Ngày tải lên :
12/08/2014, 16:21
... Single-Failure Disaster, holds for protocols where the operations performed by the entities in their actions are all deterministic By contrast, if we empower and allow the entities to perform random operations ... Single-Fault Disaster The Single-Failure Disaster result of Theorem 7.2.1 dashes any hope for the design of fault-tolerant distributed solution protocols for nontrivial problems and tasks Because ... of a processor (and thus of the corresponding entity), and so forth Note that the same fault can occur because of different causes, and hence classified differently Consider, for example, a message...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 9 pdf
Ngày tải lên :
12/08/2014, 16:21
... event for ⌳ where all and only the messages sent by xl are lost Then, for each ⌳ and l, ψ⌳,l ∈ Omit Let configurations A and B be l-adjacent Consider the events ψ⌳(A),l and ψ⌳(B),l for A and B, ... that sj (A) = sj (B) for some entity xj , and let τ and τ be events for ⌳(A) and ⌳(B), respectively Let τ [i, j ] = (αi,j , βi,j ) and τ [i, j ] = (αi,j , βi,j ) If βi,j = βi,j for all i, then sj ... events j -adjacency preserving if for any two j -adjacent configurations C and C there exist in S two events τ and τ for l(C ) and l(C ), respectively such that τ (C ) and τ (C ) are j -adjacent We...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 10 docx
Ngày tải lên :
12/08/2014, 16:21
... the needed structure and information is in place, a single request for the token can be easily and simply handled, correctly maintaining and updating the structure and information If there are ... at all: We will say that a and b are independent if both a → b and b → a We can now formally define the property we are looking for: Causal Order: For any two events a and b, if a → b then T (a) ... n-dimensional vectors A and B, we say that A ≤ B if A[i] ≤ B[i] for all indices i; we say that A < B if and only if A ≤ B and A[i] < B[i] for at least an index i So, for example, [1 0] < [3 0]...
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design and analysis of high-frequency matrix converters for induction heating
Ngày tải lên :
13/11/2014, 06:49
... supported by C1 and C3 (Fig 1.25), and charges C1 and discharges C3, and thereby reducing VLC until the voltage at the node of S1 and S3 reaches zero At this time D3 becomes forward biased and clamps ... employed to improve the simulation times taken for analysis, and have been reported for both time- and frequency-domains For time domain analysis, waveform relaxation [1.43], [1.44] allows rapid ... – [1.56], and phasor transformation [1.57] – [1.59] for inplace circuit averaging When using phasor transformation for in-place circuit averaging, the envelopes of the circuit waveform are determined...
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Design and Analysis of Computer Algorithms
Ngày tải lên :
24/12/2014, 19:58
... append a and to this codeword, given 0100 for x and 0101 for y Another way to think of this, is that we merge x and y as the left and right children of a root node called z Then the subtree for z ... started before u Because the intervals are disjoint, v must have also finished before u Lemma: Consider a digraph G = (V, E) and any DFS forest for G G has a cycle if and only the DFS forest has ... prefix code tree T for the original set of characters by undoing the previous operation and replacing z with x Lecture Notes 29 CMSC 451 and y (adding a “0” bit for x and a “1” bit for y) The cost...
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Design and analysis of rectifying circuits and antennas for wireless power transmission and ambient RF energy harvesting
Ngày tải lên :
09/09/2015, 11:12
... the frequency bandwidth of the transmitted signal could be narrowband, multiband or broadband, so that the rectenna should have the capability for narrowband, multiband, or broadband operation ... It employs a broadband 1×4 quasi-Yagi antenna array and a dual-band rectifier for harvesting the ambient RF power at both global system for mobile communications (GSM) 1800 and universal mobile ... GSM-1800 and UMTS-2100 bands efficiently is proposed in Chapter The novel rectenna is based on a broadband 1×4 quasi-Yagi antenna array with bandwidth from 1.8 to 2.2 GHz, and high gains of 10.9 and...
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Design and analysis of computer experiments for stochastic systems
Ngày tải lên :
09/09/2015, 17:52
... MNEK and the observed MSPE for the high variance scenario 118 6.2 Predictive mean given by MNEK, BKS and BKMCMC for the simple quadratic function example for the low and ... optimum and the entire sample space However for stochastic simulations, the random variability of the stochastic response can considerably affect the metamodel fit (Yin et al 2009) and therefore the ... 2.3.1.2 Uniform design Fang (1980) and Wang & Fang (1981) proposed the uniform design as an alternative choice for the space-filling design Different from the randomly generated LHD, uniform design...
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