on use of covariates in randomization and analysis of clinical trials

Ngày tải lên: 17/04/2014, 09:16

... allocation and replication issues of OMP in DDBSs in the application domain of SCEs Designing an intelligent and efficient object allocation and replication on- line algorithm, as mentioned earlier, ... problems is in designing efficient policies to handle on- line requests arriving at the system with a minimum cost and maintain the consistency of multiple replicas of objects in various locations in the ... designing object allocation and replication strategies for DDBSs In conclusion, our research contribution lies in designing adaptive object allocation and replication algorithms and evaluating...

Ngày tải lên: 16/09/2015, 17:11

... above-mentioned constraints 2.2 The Model In this section, we first introduce our DDBS system and present the concept of request schedules and allocation schemes In addition, definitions and notations ... glossary of these frequently used definitions and notations 2.3 Concluding Remarks In this chapter, we introduced distributed database systems and some concepts widely used in data allocation and ... within the framework of worst-case complexity 4.1.1 Offline and online dynamic data allocation algorithms We begin with a discussion of the concept of an offline dynamic data allocation algorithm and...

Ngày tải lên: 04/10/2015, 10:24

... Huaming and T Jindong, “An ultra-low-power medium access control protocol for body sensor network,” in Proceedings of the 27th Annual International Conference of the Engineering in Medicine and ... consumption is computed considering each body sensor time and power consumption in each of these states in non-saturation conditions Figure portrays the analytical results of the energy consumption ... (ARS), of duration tARS , in one of the randomly selected access minislots (within the CAP), or its data packet in the contention-free data slot of duration tDATA (within the CFP) The BAN coordinator...

Ngày tải lên: 21/06/2014, 11:20

... semiconducting For instance, a (17, 0) nanotube is semiconducting while a (5, 5) nanotube is metallic In the example depicted in Fig 1, the outer tube is positioned on the top of a conducting ... SRAM and DRAM cells In addition, the continuum model developed in this paper will help to study feasibility of large nanotube-based memory cells in practical applications Fabrication of arrays of ... the proof -of- concept stage 123 418 Nanoscale Res Lett (2008) 3:416–420 Continuum Modeling U¼ Carbon nanotubes observed in experiments [18] always contain more than millions of atoms Consequently,...

Ngày tải lên: 22/06/2014, 01:20

... watermarking; (ii) necessity of obtaining the consensus of the inventors of the watermarking systems to use it in the contest; (iii) necessity of using a complete system, including the exploitation of ... sensitivity analysis of watermarks using prior information,” in Security, Steganography, and Watermarking of Multimedia Contents IX, E J Delp and P W Wong, Eds., vol 6505 of Proceedings of SPIE, ... and F P´ rez-Gonz´ lez, “Breaking the n e a BOWS watermarking system: key guessing and sensitivity attacks,” to appear in EURASIP Journal on Information Security EURASIP Journal on Information...

Ngày tải lên: 22/06/2014, 19:20

... Nanda, C F Weaver, and W.-C Peng, Analysis of fade margins for soft and hard handoffs,” in Proceedings of the 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications ... number of handoff base station targets 4.1 Connection admission control (CAC) Capacity of CDMA systems is “soft.” Acceptance of each new call increases the interference level of existing ongoing ... Proceedings of IEEE Canadian Conference on Electrical and Computer Engineering (CCECE ’05), Saskatoon, Canada, May 2005 [31] V Jacobson, “Congestion avoidance and control,” in Proceedings of ACM...

Ngày tải lên: 22/06/2014, 22:20

... Minimum Finding Notice that convergecast can be used only in rooted trees The existence of a root (and the additional information existing in a rooted tree) is, however, a very strong assumption; in ... number of initiators and of their location Before doing so, we need to introduce some basic concepts and terminology about trees In a tree T, the removal of a link (x,y) will disconnect T into ... different SPT-constructions will select and act on only one, “killing” the other; the entity continues this selection process as long as it receives conflicting requests The criterion an entity uses to...

Ngày tải lên: 12/08/2014, 16:21

... reply Internal to the other (III) Interaction between absorption and link calculation A situation that requires attention is due to the interaction between merge-link calculation and absorption Consider ... declaring useless (i.e., removing from consideration in the next iterations) the connecting link UNIVERSAL ELECTION PROTOCOLS 5 205 FIGURE 3.56: Rules of pruning Notice that after pruning a link, ... then y is the opponent of x in stage i, and it is the destination of the message; on the contrary, if it loses one of them, it must forward the message to the winner of that match In a sense, the...

Ngày tải lên: 12/08/2014, 16:21

... of Local Contractions, each using 2(n − 1) messages and 2r(s) time, and one execution of Sites Reduction that consists in an execution of Rank Protocol CUT is used with N ≤ min{n, ⌬}⌬ and, as we ... beginning of iteration i, the values N (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 ... Intersection Difference Partioning (IDP) The idea of this method is to store each set Di as a collection Zi of disjoint subsets such that operations of union, intersection, and difference among...

Ngày tải lên: 12/08/2014, 16:21

... monotonically increasing for k > 2; thus, they can not be used in pipeline for computing the minimum Determine a class MonotoneOrder+k of optimal communicators that are monotonically increasing ... 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 ... FIGURE 6.20: Guessing in an interval MIN-FINDING AND ELECTION: WAITING AND GUESSING 373 FIGURE 6.21: Linear search is the only possibility when k = strategy that uses only O(n) bits in total (like...

Ngày tải lên: 12/08/2014, 16:21

... 0-decision configuration are also 0-decision (similarly in the case of 1-decision) Consider a configuration C and the set C(C) of all configurations reachable from C If all decision configurations in ... intrigue, and untruthfulness were alleged to be common among the ruling class INTRODUCTION Omission Addition Corruption Omission + Addition Omission + Corruption 413 Addition + Corruption Byzantine ... two initial configurations adjacent if they differ only in the initial value of a single entity For any two initial configurations C and C , it is always possible to find a chain of initial configurations,...

Ngày tải lên: 12/08/2014, 16:21

... cycles at once and can be linked to more than one strongly connected component The problem is the one of determining if an initiator entity x0 is involved in one or more deadlocks, and, if so (in the ... activities: the shouting and the granting The shouting uses one “Shout” message on 512 DETECTING STABLE PROPERTIES each link of the constructed tree and two shouts on all other links, and it uses a “Reply” ... if and only if there is a directed path from x to a strongly connected component of W Consider for example the wait-for graph W shown in Figure 8.1 consisting of a single connected component In...

Ngày tải lên: 12/08/2014, 16:21

... system, and so forth Because of this nature, these computations are called continuous computations We have already seen one such computation in Chapter 4, when dealing with the problem of maintaining ... using the metaphor of critical operations in a continuous computation C In this metaphor, every entity is involved in a continuous computation C, some operations that entities can perform in ... Detection and Resolution We have examined the problem distributed deadlock detection in some detail in Section 8.2 There, we considered two terminating versions, the personal detection and the...

Ngày tải lên: 12/08/2014, 16:21

... state -of- the-art in the field A review of resonant inverters used in induction heating systems, and the analysis methods associated with those inverters, is also given 1.1 Basic principles of induction heating ... underlying principles of induction heating are based on the creation of an alternating electromagnetic field that is used to induce current in a load and in so doing heat the load (via the ‘skin ... matrix converters for induction heating emphasises the importance of a good component layout and routing to reduce the problem Many of the concepts pioneered in this paper remain in use, despite...

Ngày tải lên: 13/11/2014, 06:49

Ngày tải lên: 14/11/2014, 06:22

... set containing a single item v Find-Set(u): Find the set that contains a given item u Union(u, v): Merge the set containing u and the set containing v into a common set You are not responsible ... using integrals: Integration and summation are closely related (Integration is in some sense a continuous form of summation.) Here is a handy formula Let f (x) be any monotonically increasing ... supported monopoly at one time, and was responsible for handling all telephone connections If a company wanted to connect a collection of installations by an private internal phone system, Lecture...

Ngày tải lên: 24/12/2014, 19:58

... Finally, the conclusion and suggestions for future work will be given in Chapter 16 1.4 Original Contributions In this thesis, the following original contributions have been made: A novel non-quasi-static ... loss caused by intermodulation effect under the condition of high input power levels According to the extent of nonlinearity, nonlinear circuits can be classified into two categories: one is ... in the model are used to result in weak nonlinearity of the model In this 34 case, the model is only suitable for linear region For the operating region where the diode’s nonlinearity is strong,...

Ngày tải lên: 09/09/2015, 11:12

... observations of the mean function Y (x) = x2 + ε(x) In the traditional application of kriging in stochastic simulations, replications are taken at each observation point and the averages of the ... function when x < −4 and x > Because the traditional ordinary kriging model is designed under deterministic assumptions, random noise can cause an ill fit and result in disappointing predictions ... for the in uence of random noise in terms of model prediction and parameter estimation The study on parameter estimation uncertainty problem with kriging metamodels in stochastic simulation is...

Ngày tải lên: 09/09/2015, 17:52