estimation of average treatment effects based on propensity scores

Ngày tải lên: 21/06/2014, 22:20

... activity of MnCo 1-3 and CeCo 1-4 catalysts in excess oxygen condition 49 Figure 3.3 C 3 H 6 conversion of CeCo1-4 in different reaction conditions (condition a: excess oxygen condition with ... flow or the concentration of C 3 H 6 before reacation. afterHC C 63 : the concentration (%V) of C 3 H 6 after reaction. )( 63 convHC C : the concentration (%V) of totally converted C 3 H 6 ... at different reaction conditions for C 3 H 6 oxidation 43 Table 2.6 Composition of mixture gases at different reaction conditions for CO oxidation 44 Table 2.7 Composition of mixture gases at...

Ngày tải lên: 12/05/2014, 17:14

Ngày tải lên: 09/08/2014, 04:21

... Reliability Analysis of a Power System Based on the Multi-State System Theory Chunyang LI College of Mechatronics Engineering and Automation National University of Defense Technology Changsha, ... P ROBLEM F ORMATION The power system is composed of eight identical batteries. A branch c onsists of two batteries connected in series, and the system consists of four branches connected in parallel ... function of subsystem ; is the number of components in subsystem i ; i n i M is the number of possible states of subsystem i . is the performance of subsystem i ; is the corresponding...

Ngày tải lên: 03/01/2014, 19:38

Ngày tải lên: 14/02/2014, 07:20

... occur in a context win- dow. If many of the concepts in a window have a strong component for one of the topics, then the sum of the vectors, the context vector, will also have a strong component for ... Automatic Acquisition of English Topic Signatures Based on a Second Language Xinglong Wang Department of Informatics University of Sussex Brighton, BN1 9QH, UK xw20@sussex.ac.uk Abstract We ... Proceedings of the 16 th Conference of the Amer- ican Association of Artificial Intelligence. Rada Mihalcea. 2003. The role of non-ambiguous words in natural language disambiguation. In Pro- ceedings of...

Ngày tải lên: 08/03/2014, 04:22

... Thanh Cong Department of Physics, College of Sciences - VNU Abstract. We present the percolation-theory model for explanation of conductivity of perovskites based on the scaling property of grain ... region; this fact argues for the fractal nature of n, but the confirmation needs further investigation. In contrast to the fractal dimension determined on the basis of the voltage drop distribution ... corresponds to the activation energy, its drop signifies the variation of this energy and for our case, this means the change in conduction mechanism. The estimation for W P from the slopes of log...

Ngày tải lên: 14/03/2014, 13:20

... One of the main challenges when constructing such a data- base is to simultaneously satisfy the conflicting demands of completeness on the one hand and quality of alignment and domain definitions ... be a solution? The ques- tion here is really how much manual work has to be done to achieve a comprehensive database. This depends on the distribution of protein family sizes. Based on sequence ... a specific form of model that describes the sequence conservation in a family. This type of HMM consists of a linear chain of match, delete, and insert states. 14,15 The match state contains probabilities...

Ngày tải lên: 16/03/2014, 16:20

... In Proc. of 6th CoNLL, pages 63–69. S. Kurohashi and M. Nagao. 1994. A syntactic analy- sis method of long Japanese sentences based on the detection of conjunctive structures. Computational Linguistics, ... Segmentation of semantic unit in Japanese monologue. In Proc. of ICSLT-O-COCOSDA 2004, pages 87–92. M. Kim and J. Lee. 2004. Syntactic analysis of long sentences based on s-clauses. In Proc. of 1st ... Section 2.3 and confirmed 70.6% (522/751) of the final bunsetsus of clause boundary units depended on the final bunsetsu of other clause boundary units. 6 Here, the specifications of these annotations...

Ngày tải lên: 17/03/2014, 04:20

... on concrete structural relations. A semantic relation construction of frames based on structural rela- tionships is another possible application of LCS approaches that connects traditional LCS theo- ries ... Palmer. 2000. Class -based construction of a verb lexicon. In Proceedings of the National Conference on Arti- ficial Intelligence, pages 691–696. Menlo Park, CA; Cambridge, MA; London; AAAI Press; ... a thorough investigation for enumerating relations which can be represented in terms of rewriting rules for LCS structures. However, automatic construction of a consistent relation graph of se- mantic...

Ngày tải lên: 24/03/2014, 03:20

... an extremely long time to converge). Johnson et al. (1999) observed that parsing and related tasks only require conditional distributions over parses given strings, and that such conditional distributions ... interpretation; rather, each different as- signment of values to these variables identifies a set of features which constitutes one of the parses in the packed representation. A condition a on X is a ... by a unification- based grammar (UBG). Existing algo- rithms for parsing and estimation require the enumeration of all of the parses of a string in order to determine the most likely one, or in...

Ngày tải lên: 31/03/2014, 06:20

... Exertion and Pain Scales. Human Kinetics Publishers, Champaign, Illinois, USA; 1998. 9. Vain A: Estimation of the Functional State of Skeletal Muscle. In Control of Ambulation using Functional ... insignificant stiff- ness of calf-muscles. For example, very often two workers perform the construction of road edge (roadside) together; the construction of road edge requires lifting of a concrete edge ... (4) where: P O – correspondence proportion of objective experimental data with respondents' responses (yes or no), P C – correspondence proportion of data with number of participants (P C...

Ngày tải lên: 20/06/2014, 00:20

... method for parameter estimation of multicomponent LFM signal based on sparse signal representation, in Proceedings of IEEE International Conference on Information and Automation, Zhangjiajie, China, ... micromotion parameter estimation is now cast as the sparse reconstruc- tion of f associated with the parameter hypothesis at the position of non-zero elements of f. There are a large number of methods ... position in range direction, position in azimuth direction, micromotion frequency and micromotion amplitude, respectively. 22 After range compression and motion compensation, the first two terms of...

Ngày tải lên: 20/06/2014, 20:20

... Motion,Deposition of NPs on Heating Surface EDL,Aggregation and Diffusion,Deposition of NPs on Heating Surface Population Proportion % (out of 40 observations) Figure 7 Probab ility function of propos ... category of nanofluids. The final sec- tion contains the main conclusions reached by the cur- rent review. Characteristics of nanofluids This section epitomizes the most common nanofluid preparation ... 0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% 80.0% Deposition of NPs on Heating Surface Passive/Active mode of HT Long Range Structural Disjoining Pressure Aggregation and Diffusion,Thermal Conductivity Enhancement (alone) Brownian Motion,Deposition...

Ngày tải lên: 21/06/2014, 03:20

... representation of QMF bank [14, 15], the constrained optimization problem (31) is converted into an unconstrained one. The use of lattice QMF representation for converting the constrained optimization ... spread of wavelet in time. This definition of time-duration gives a measure of time localization of the wavelet [25]. Now, the above definition of time duration is used for selecting the support of ... optimal decomposition and reconstruction QMF pair for length M = 6andM = 8. n QMF of length = 6QMFoflength= 8 Decomposition Reconstruction Decomposition Reconstruction h[n]g[n] h 1 [n]g 1 [n] h[n]g[n]...

Ngày tải lên: 21/06/2014, 05:20

... these conditions are only present in this segment, since the rest of roads have a clear space on one side. This fact enables the reflection of signals on the various walls. Moreover, the second interesting condition ... F. Milag ro, “Experimental demonstration of the viability of IEEE 802.11b based inter-vehicle communications,” in Proceedings of the 4th International Conference on Testbeds and Research Infras- tructures ... previous section, the range of the available access points and VANET links are estimated considering a sim- plification of the driving speed and the time of connection. This section presents more...

Ngày tải lên: 21/06/2014, 08:20

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 22/06/2014, 00:20