power and sample size for phase iii clinical trials of survival
Design and analysis of object allocation and replication algorithms in distributed databases for stationary and mobile computing systems
... probability of 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, ... The concept of competitive analysis was first introduced by Sleator and Tarjan [61] to study the performance of on-line algorithms in the context of searching a linked list of elements and the paging ... 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...
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Design and analysis of object replacement policies on dynamic data allocation and replication algorithm with buffer constraints
... 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 time t The process of LRUhet ... total number of requests of 50k and 100k respectively and write request: 5%) 84 vi List of Tables 2.1 Glossary of definitions and notations 18 3.1 Pseudo code of LRUhet algorithm ... database of finite size In this thesis, we analyze the cost of servicing a set of read-write requests for a replicated object and propose a mathematical model With this mathematical model, the cost of...
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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
... here of fixed length (i.e., independent of the number of sensors in the BSN) and contains two new fields for specific energy-saving purposes, the modulation and coding scheme (MCS) and length of the ... 43.31% for a payload length packet of 50 bytes; (iii) BSN-MAC outperforms IEEE 802.15.4 MAC in 7.20% for payload length packet of 80 bytes; (iv) DQ-MAC outperforms IEEE 802.15.4 MAC in 36.65% for ... between DQMAC performance and that of the standard facto 802.15.4 MAC and the BSN-MAC is portrayed BSN-MAC has been selected as a reference benchmark for its similarity in terms of design as well...
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Báo cáo hóa học: " Design and Analysis of Nanotube-Based Memory Cells" ppt
... of arrays of nanotube structures such as we propose in this paper is a subject of much ongoing research CNT geometric uniformity and the ability to position CNTs in a regular array suitable for ... the fabrication of regular arrays of CNTs suitable for use in integrated circuits has been demonstrated Extension of these or other techniques for fabricating regular arrays of DWNTs will be ... I, uI is 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...
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Báo cáo hóa học: " Research Article Design and Analysis of the First BOWS Contest" potx
... results of the first phase of the contest, and the last five are results of the second phase In Figure a summary of these results is given: the PSNR values between the attacked images and the watermarked ... official winner of the contest prize was decided to be the winner of the first phase In the following the two Phases are analyzed, and a comparison between them is carried out 3.1 First phase of the contest ... Thanks to this modification and to the growing advertisement of the contest, the number of participants and uploaded attacked images increased alot At the end of the first phase of the contest, 72074...
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Báo cáo hóa học: " Cross-Layer Design and Analysis of Downlink Communications in Cellular CDMA Systems" docx
... HCM Terminate (b) Proposed soft handoff procedure Figure 6: Soft handoff algorithm and procedure 4.2 Soft handoff One of the major benefits of a CDMA system is the ability of a mobile to communicate ... Let poweri and powermean denote the required transmission power of packet i, and the mean downlink transmission power of active users in one cell Then we have delaynor = delayi /Vthre , i and powernor ... calls, the number of blocked (dropped) handoff calls, the number of successful handoff users, total reserved guard power, and total consumed guard power (sum of successful handoff powers derived from...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 2 ppt
... costs of Flood+Reply, and thus of Shout, are simple to analyze As mentioned before, Flood+Reply consists of an execution of Flooding(Q) with the addition of a reply (either Yes or No) for every ... same random selection is made, for example, for coordination of a computation, for control of a resource, etc The problem is how to determine an entity at random Let us concentrate on uniform ... any number of initiators and without a root or additional information Cardinal Statistics A useful class of functions are statistical ones, such as average, standard deviation, and so for These...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 4 docx
... 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 not know where u and v are (i.e., which of its links connect ... shown in Figures 3.43, 3.44, and 3.45 Let us analyze the cost of the protocol How many candidates there can be in stage i? As each of them has a territory of size i and these territories are disjoint, ... all districts of A and B will join the new city and know its name and its level Both A and B must be transformed so that they are rooted in the new downtown As discussed in the case of absorption,...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 6 potx
... convergecast the information about the size of the new search space At the end of the convergecast, s knows both n(i) and k(i) as well as all the information necessary to perform the random selection ... Create a bitmask of size n − For each set Sj (a) if Sj is the right operand of an intersection operator, then place in the jth position of the bitmask; (b) if Sj is the right operand of a difference ... field of distributed query processing is dedicated to this topic, mostly focusing on the estimation of the size of the output of a set operation and thus of the entire query The IDP structure for...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 7 docx
... the 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, ... properties of the waiting 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 ... only of deterministic operations A different class of protocols are those where an entity can perform operations whose result is random, for example, tossing a dice, and where the nature of the...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 8 doc
... is part of the local state of x, emulates the output of D at x Algorithm T transforms D into D if and only if for every execution of T using D, output = {output(x) } ∈ D (F ), that is, for every ... impulse for each entity), and we will treat both spontaneous events and the ringing of the alarm clocks as the same type of events and call them timeouts We represent by (x, M) the event of x receiving ... protocol for R with one Byzantine faults as follows: We first divide the entities of Kn into three sets, A, B, and C, of size at least and at most f each; we then set the initial values of the entities...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 9 pdf
... predicate (using and, ” “or,” and “p -of- q” connectors) on its outgoing links; examples of such predicates are as follows: “(two of l1 , l2 , l3 ) or ( l1 and l4 )” and “( l1 and l2 ) or ( l3 and l4 ),” ... 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, ... is continuous if for any configuration C and for any τ , τ ∈ S for ⌳(C), there exists a finite sequence τ0 , , τm of events in S for l(C) such that τ0 = τ , τm = τ , and τi (C) and τi+1 (C) are...
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DESIGN AND ANALYSIS OF DISTRIBUTED ALGORITHMS phần 10 docx
... request of x, v that of y, and w that of z; then u will grant its permission to x and put on hold the request for y, v will grant its permission to y and put on hold the request for z, and w will ... 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 ... worst case, where k is the number of initiators and m is the number of links in the wait -for graph Prove the correctness and analyze the cost of your design Implement and throughly test your protocol...
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design and analysis of high-frequency matrix converters for induction heating
... calculations for the synthesis of three -phase input current system Finally, some methods of improving converters’ efficiency, namely reducing on-state resistance of power devices, and application of synchronous ... half-cycle of the load current, S1 and S2 are switched off As the inductive impedance of the load circuit tends to maintain the load current, C1 and C3 now support the current of S1, and C2 and C4 ... capacitances of C2 and C4 are equal, charging of C2 and discharging of C4 are terminated when VPWM reaches +VDC, at which time D4 becomes forward biased and supports the current Since VPWM and VLC...
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Design and Analysis of Computer Algorithms
... function of the size and structure of the input set In order to reduce matters to their simplest form, it is common to consider efficiency as a function of input size Among all inputs of the same size, ... 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 ... then f [u] ≤ f [v] Proof: For tree, forward, and back edges, the proof follows directly from the parenthesis lemma (E.g for a forward edge (u, v), v is a descendent of u, and so v’s start-finish...
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Design and analysis of rectifying circuits and antennas for wireless power transmission and ambient RF energy harvesting
... capable of recycling low RF power A new rectenna with broad-band 1×4 quasi-Yagi antenna array and a dualband rectifier is designed to harvest the ambient RF power of GSM-1800 and UMTS-2100 bands ... input power levels or input power densities for most of the works are high Normally, the input power level is more than 20 dBm and the power density is higher than 10 mW/cm2 From 1990, more and ... Figure 4.5 Simulated and measured |S11| and gain of the 1×4 quasi-Yagi array .70 Figure 4.6 Simulated and measured E-plane and H-plane patterns at (a) 1.85 and (b) 2.15 GHz for the 1×4 quasi-Yagi...
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Design and analysis of computer experiments for stochastic systems
... option for experimenter and focused on balancing the search within the local area of the current optimum and the entire sample space However for stochastic simulations, the random variability of ... 2.3 Review of Design of Experiment for Computer Simulation 2.3 Review of Design of Experiment for Computer Simulation Experimenters use the design of experiment to increase the information gained ... dimension of the sample space into an equally n intervals, which will results in np 23 2.3 Review of Design of Experiment for Computer Simulation equal-sized cells A selection of n cells are randomly...
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Design and analysis of ultra wide band and millimeter wave antennas
... constraints and to increase performances for the same power consumption In this case, the challenge of co-design consists of finding the best tradeoff between the maximum power gain of the LNA and the ... thesis entitled “Design and Analysis of Ultra-wide Band and Millimeter-wave Antennas ” by Zhang Yaqiong in partial fulfillment of the requirements for the degree of Doctor of Philosophy Dated: DEC ... operating bandwidth for impedance matching, good radiation pattern and minimum distortion of the received waveforms in order to satisfy the FCC standard for UWB applications [49] The study of UWB...
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