factorial designs with time to event endpoints

Ngày tải lên: 17/04/2014, 09:16

... type window with size τ to store at most τ number of requests (in τ time units) for the same object Additionally, for each win(o), we associate a counter T Co with an initial value set to τ and ... modify the DWM algorithm to a new object allocation and replication algorithm, referred to as Real -time Decentralized Dynamic Window Mechanism (RDDWM) algorithm, to take into account the hard deadline ... MCEs to handle on-line requests (real -time/ non-real -time) Our objective is to dynamically adjust the allocation schemes of objects so as to minimize the total servicing cost of the arriving requests...

Ngày tải lên: 16/09/2015, 17:11

... objects in a server at time t Let r(t) be the object to be replaced from Set(t) at time t We define a backward distance bt (i) [16] as the number of time slots from time t to the most recent reference ... capacity to hold the copies of the object When the available buffer space in a site is not enough to store a new copy of an object, the decision has to be made by each processor, for example, to evict ... work I want to deliver my sincere esteem to his rigorous research style, which led me to a correct research attitude I am also very grateful to my supervisor for his help during the time I were...

Ngày tải lên: 04/10/2015, 10:24

... minislot with probability p(λ) the first time, the second time is with probability p(λ/m), the third time with probability p(λ/m2 ) and so on This is the inherent behavior of a DQ-MAC protocol, ... star-based topology with several nodes and a network coordinator, following DQRAP original description [17], the time axis is divided into an “access subslot” that is further divided into access ... to 15/16 of the time when nothing is transmitted/received, while still allowing the transceiver to be synchronized to the network and able to transmit or receive a packet at any time [19] The beacon...

Ngày tải lên: 21/06/2014, 11:20

... possible to deposit the electrode by molecular beam epitaxy techniques Using such techniques, the gold atoms will tend to bond with the carbon atoms at the outside surface of the nanotube, preventing ... However, deflection due to such interaction would tend to reduce the dynamics of the inner nanotube, leading to some additional damping Consequently, the device is easier to control with slightly less ... with respect to the coordinates of particle I It should be noted that U is the interlayer potential when atoms are placed at the equilibrium positions Therefore, interlayer friction due to atoms’...

Ngày tải lên: 22/06/2014, 01:20

... order to allow the attackers to carry out also sensitivity attacks [6–8] (actually, the limit was not removed, but fixed to a value equal to 5000 attacks/day) Thanks to this modification and to the ... it into a one-bit scheme by inserting within the image a particular codeword and asking to the detector to check whether the extracted content was equal to the original one No redundancy was ... easiest to attack by means of standard image processing tools, while no particular difference could be observed with regard to sensitivity attacks The three original images were watermarked with...

Ngày tải lên: 22/06/2014, 19:20

... arrival time Ordered by adaptive priority Output to BS1 after prioritizing Handoff requests to BS1 Handoff requests to BS2 Handoff requests to BSn Output to BS2 after prioritizing Output to ... replacement hysteresis, and time to trigger, respectively CPICH is the abbreviation of common pilot channel The events, together with the hysteresis mechanism and time to trigger mechanism are discussed ... it into QV in the order of arrival time Yes No Put it into QV in the order of arrival time For each existing packet, buffering delay == 0? Put it into queue “normal” in the order of arrival time...

Ngày tải lên: 22/06/2014, 22:20

... problem with DF Traversal was its time complexity: It was to reduce time in which we developed more complex protocols How about the time costs of this simple new protocol? The ideal time of Shout+ ... spanning tree with a single-initiator protocol and to use 66 BASIC PROBLEMS AND PROTOCOLS the ids of the initiators to distinguish among different constructions So, instead of cooperating to construct ... Flooding: with single initiator = broadcast; with multiple initiators = wake-up Flooding with Reply (Shout ): with single initiator, it creates a spanning tree rooted in the initiator Convergecast:...

Ngày tải lên: 12/08/2014, 16:21

... such a topology is very expensive Let us examine how to exploit such very powerful features to design an efficient election protocol 3.6.1 Stages and Territory To develop an efficient protocol for ... phase needs to be added, in which each entity exchanges its unique id with its neighbors; then the actual execution of the protocol can start The total cost of the protocol (with or without preprocessing ... protocol Stages with Feedback assuming message ordering Exercise 3.10.17 Derive the ideal time complexity of protocol Stages with Feedback Exercise 3.10.18 Write the rules of protocol Stages with...

Ngày tải lên: 12/08/2014, 16:21

... How many messages need to be sent anyway? we would like the answer to be independent of the protocol but to take into account both the topology of the network and the storage requirements The ... in one time unit to its neighbor, the time required by all the merge operations is exactly the same as the number of iterations In contrast to this, to determine termination, we need to compute ... Contraction required by Protocol REDUCE requires a broadcast and a convergecast, and costs 2(n − 1) messages and 2r(s) time To determine the total cost we need to find out the number of times Local Contraction...

Ngày tải lên: 12/08/2014, 16:21

... and the communicator is TwoBits, the total number of bits is = 2(p − 1) The receiver x4 receives “Start-Counting” at time and the “Stop-Counting” at time i + 3; hence the total time is I + = I ... at the same time, they will start not too far away (in time) from each other To achieve this, it is sufficient to perform a wake-up: When an entity spontaneously wants to start the protocol, it ... COMPUTATIONS FIGURE 6.11: Time Event diagram showing the communication of I in pipeline from x1 to x4 will start communicating the information to xj +1 without waiting to receive it form xj −1...

Ngày tải lên: 12/08/2014, 16:21

... system collapses, no protocol can be correct Hence, the goal is to design protocols that are able to withstand up to a certain amount of faults of a given type Another fact to consider is that not ... entity x is supposed to send (according to the protocol) to a neighbor y but never arrives This fault could have been caused by x failing to execute the “send” operation in the protocol: an execution ... model 7.1.3 Topological Factors Our goal is to design protocols that can withstand as many and as dangerous faults as possible and still exhibit a reasonable cost What we will be able to depends...

Ngày tải lên: 12/08/2014, 16:21

... suspects(z) with y ∈ suspects(z) after time t , x does not add y to output(x) after time t Thus, there is a time after which x does not suspect y in outputr Answer to Exercise 7.10.30 Assume, to the ... multistages protocols not want to deal with possible problems due to concurrency (e.g., because in this way the correctness is easier to prove) Usually it is simple to design protocols so that ... that with protocol Rand-Omit, the probability that a success occurs within the first k rounds is P r[success within k rounds ] ≥ − (1 − 2− n/2 +f +1 )k √ Exercise 7.10.20 ( ) Prove that with protocol...

Ngày tải lên: 12/08/2014, 16:21

... the token to it using the routing protocol; as we are assuming that the routing protocol is correct, this message will be delivered to x1 within finite time Notice that when x1 receives the token, ... detection with multiple initiators consider the strategy to integrate into the solution an election process among the initiators Design a protocol for the Generalized request model to implement ... Order property, then to identify what to undo would be easy: To completely undo a we must undo every b with T (b) > T (a) Notice that real time is not complete with respect to causal order; in...

Ngày tải lên: 12/08/2014, 16:21

... installed in Sheffield, using a motor-generator set to create the excitation field Radio transmitters with vacuum valves were subsequently modified to make valve-based generators for the first radiofrequency ... are still produced today [1.4] and the use of motor-generator based systems are still employed in a minority of systems The use of motor-generator sets and valve-based generators do, however, ... thyristor or the inseries diode requires a small period to recover its reverse-blocking capability This time, termed ‘reverse recovery time , can vary from 20 µs to 100 µs for modern thyristors...

Ngày tải lên: 13/11/2014, 06:49

Ngày tải lên: 14/11/2014, 06:22

... and each takes O(q) time to compute, thus the total time to multiply these two matrices is proportional to the product of the dimensions, pqr A * B q = C = p Multiplication time = pqr p r q r ... We want to break the problem into subproblems, whose solutions can be combined to solve the global problem As is common to any DP solution, we need to find some way to break the problem into smaller ... have the property that they go from vertices with higher finishing time to vertices with lower finishing time Thus along any path, finish times decrease monotonically, implying there can be no cycle...

Ngày tải lên: 24/12/2014, 19:58

... RF -to- DC PCE over variable power levels are required To meet this requirement, the second aim of this research work is to design a new rectification circuit which is able to perform high RF -to- DC ... considered to be a proper frequency for power transmission between space -to- ground, ground -to- space, and ground -to- ground [16] On the other hand, the operating frequency could be high for the space -to- space ... transistor (FET) switch, the configuration of the rectifier can automatically adapt to the input power level Compared with traditional rectifiers, it can provide a consistent high RF -to- DC PCE...

Ngày tải lên: 09/09/2015, 11:12

... stochastic computer experiments with heterogeneous variance, a suitable model has yet to be found For the computer experiments with the stochastic simulation model, the basic idea is close to ... for stochastic simu- lation with heterogeneous variance has additional allocation problems compared with the experimental design for stochastic simulation with homogeneous variance This has to ... stochastic simulation response Barton (1992) and Barton (1998) further discussed the possibility that applying kriging metamodel in stochastic simulation model For the stochastic simulation with...

Ngày tải lên: 09/09/2015, 17:52