Preliminary Analysis of a Breadth-First Parsing Algorithm: Theoretical and Experimental Results

1987 ◽  
pp. 267-328 ◽  
Author(s):  
W. A. Martin ◽  
K. W. Church ◽  
R. S. Patil
Keyword(s):  
Preliminary Analysis ◽  
Experimental Results ◽  
Parsing Algorithm

scholarly journals Preliminary analysis of lip-wing concept using computational fluid dynamics and actuator disc theory

2021 ◽  
Author(s):  
Peter Walker
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Preliminary Analysis ◽  
Experimental Results ◽  
Disk Model ◽  
Preliminary Results ◽  
Actuator Disk ◽  
Actuator Disc

This thesis presents a preliminary analysis of the lip wing concept proposed by Dusan Stan of Aliptera Aircraft. A inviscid CFD-CAD actuator disk model was used to simulate a comparable geometry to that which was investigated experimental by Aliptera Aircraft. In general, a 10%-12% increase in thrust was produced at an optimal lip wing angle of 30o. This increase in thrust was consistent with the experimental results obtained by Aliptera Aircraft. These preliminary results are promising and encourage further research

scholarly journals Searching for treasures at sub-barrier energies: the case of 8B and 7Be

2021 ◽  
Vol 252 ◽  
pp. 04006
Author(s):  
A. Pakou ◽  
P. D. O’Malley ◽  
L. Acosta ◽  
A. M. Sánchez-Benítez ◽  
J. J. Kolata ◽  
...  
Keyword(s):  
Preliminary Analysis ◽  
Particle Production ◽  
Low Energy ◽  
Experimental Results ◽  
Weakly Bound ◽  
Transfer Processes ◽  
Energy Regime ◽  
Cluster Transfer

Unexpected and challenging experimental results, at below barrier energies for weakly bound nuclei, are briefly reviewed in this article. The emphasis will be on our recent breakup results for 8B+208Pb at deep sub-barrier energies, indicating a dominance of direct mechanisms at this low energy regime. We will also present, a preliminary analysis of the 4He and 3He - particle production events for the 7Be + 208Pb reaction. These data were collected at the same experiment and at similar deep sub-barrier energies, exhibiting large yields compatible with cluster transfer processes. To confirm these results a new experiment to be performed at TriSol is planned, as soon as the upgrading of this facility will be completed.

Preliminary Analysis of the BASALA-H Experimental Programme

2002 ◽  
Author(s):  
Patrick Blaise ◽  
Philippe Fougeras ◽  
Herve´ Philibert ◽  
Vale´rie Laval ◽  
Gre´gory Perret
Keyword(s):  
Preliminary Analysis ◽  
Experimental Results ◽  
Preliminary Design ◽  
Experimental Physics ◽  
Mox Fuel ◽  
Analysis Of Results ◽  
On Line ◽  
Full Analysis ◽  
Preliminary Study ◽  
Line Analysis

This paper is focused on the preliminary analysis of results obtained on the first cores of the first phase of the BASALA (Boiling water reactor Advanced core physics Study Aimed at mox fuel LAttice) programme, aimed at studying the neutronic parameters in ABWR core in hot conditions, currently under investigation in the French EOLE critical facility, within the framework of a cooperation between NUPEC, CEA and COGEMA. The first “on-line” analysis of the results has been made, using a new preliminary design and safety scheme based on the French APOLLO-2 code in its 2.4 qualified version and associated CEA-93 V4 (JEF-2.2) Library, that will enable the Experimental Physics Division (SPEx) to perform future core designs. It describes the scheme adopted and the results obtained in various cases, going to the critical size determination to the reactivity worth of the perturbed configurations (voided, overmoderated, and poisoned with Gd2O3-UO2 pins). A preliminary study on the experimental results on the MISTRAL-4 is resumed, and the comparison of APOLLO-2 versus MCNP-4C calculations on these cores is made. The results obtained show very good agreements between the two codes, and versus the experiment. This work opens the way to the future full analysis of the experimental results of the qualifying teams with completely validated schemes, based on the new 2.5 version of the APOLLO-2 code.

scholarly journals Unsupervised Discourse Constituency Parsing Using Viterbi EM

2020 ◽  
Vol 8 ◽  
pp. 215-230
Author(s):  
Noriki Nishida ◽  
Hideki Nakayama
Keyword(s):  
Prior Knowledge ◽  
Experimental Results ◽  
Superior Performance ◽  
Text Structures ◽  
Parsing Algorithm

In this paper, we introduce an unsupervised discourse constituency parsing algorithm. We use Viterbi EM with a margin-based criterion to train a span-based discourse parser in an unsupervised manner. We also propose initialization methods for Viterbi training of discourse constituents based on our prior knowledge of text structures. Experimental results demonstrate that our unsupervised parser achieves comparable or even superior performance to fully supervised parsers. We also investigate discourse constituents that are learned by our method.

scholarly journals Preliminary analysis of lip-wing concept using computational fluid dynamics and actuator disc theory

2021 ◽  
Author(s):  
Peter Walker
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Preliminary Analysis ◽  
Experimental Results ◽  
Disk Model ◽  
Preliminary Results ◽  
Actuator Disk ◽  
Actuator Disc

This thesis presents a preliminary analysis of the lip wing concept proposed by Dusan Stan of Aliptera Aircraft. A inviscid CFD-CAD actuator disk model was used to simulate a comparable geometry to that which was investigated experimental by Aliptera Aircraft. In general, a 10%-12% increase in thrust was produced at an optimal lip wing angle of 30o. This increase in thrust was consistent with the experimental results obtained by Aliptera Aircraft. These preliminary results are promising and encourage further research

Vibration Isolation of a Test Bench Founded on Sand Layer

2002 ◽  
Author(s):  
Juha-Matti Kivinen ◽  
Erno Keskinen ◽  
Robert Hildebrand ◽  
Ville Ja¨rvinen
Keyword(s):  
Preliminary Analysis ◽  
Vibration Isolation ◽  
Test Bench ◽  
Experimental Results ◽  
Paper Machine ◽  
Sand Layer ◽  
University Of Technology ◽  
Set Up ◽  
Machine Interaction

A modern paper machine is equipped with various finishing units e.g. calendars and coating units to produce better optical and printing properties. Today’s trend is to supply these finishing units with polymer covered rolls. Tampere University of Technology (TUT) has built up an experimental set-up to study both vibration phenomena and polymer behavior. One of the essential task is to determine and verify the soil-machine interaction. This paper presents the preliminary analysis of the vibratory behavior and experimental results of modal analyses.

Gloreha—Hand Robotic Rehabilitation: Design, Mechanical Model, and Experiments

2016 ◽  
Vol 138 (11) ◽  
Author(s):  
Alberto Borboni ◽  
Maurizio Mor ◽  
Rodolfo Faglia
Keyword(s):  
Mechanical Model ◽  
Preliminary Analysis ◽  
State Of The Art ◽  
Experimental Results ◽  
Mechanical Power ◽  
Hand Rehabilitation ◽  
Robotic Rehabilitation ◽  
Stroke Patients ◽  
Power Generator ◽  
Hand Impairment

Stroke patients are often affected by hand impairment. Literature shows different experiences of robotic rehabilitation that is able to prove an intensive and effective therapy. A preliminary analysis of the state of the art evidenced lacks in hand robotic rehabilitation devices. Thus, this work proposes a new rehabilitation device for hand rehabilitation based on a compliant transmission. The mechanical power generator is not on the hand to reduce the weight of the device. The mechanical model of the system is descripted. Experimental results on 126 stroke patients evidenced the efficacy of this device

An observer-based adaptive control design for the maglev system

2020 ◽  
Vol 42 (14) ◽  
pp. 2771-2786 ◽  
Author(s):  
Baris Bidikli
Keyword(s):  
Preliminary Analysis ◽  
Closed Loop ◽  
Magnetic Levitation ◽  
Control Process ◽  
Control Design ◽  
Adaptive Controller ◽  
Experimental Results ◽  
Control Effort ◽  
Maglev System ◽  
Error Dynamics

In this study, a nonlinear adaptive controller that can be used to control a magnetic levitation (maglev) is designed. The designed controller is equipped with a nonlinear velocity observer to provide the control without measuring velocity. Its capability to adaptively compensate all parametric uncertainties during the control process is one of the main advantages of this controller. Utilizing this capability, control of the maglev system can be realized without using any knowledge about system parameters. Due to the fast convergence capability of the designed observer and the desired model dependent structure of the adaptation rules, the proposed control design provides better performance than most of the robust and adaptive controllers that have been frequently used to control maglev system. The observer dynamics are analyzed via a Lyapunov–like preliminary analysis. Then, convergence of the observation and the tracking errors under the closed–loop operation and stability of the closed–loop error dynamics are proven via a Lyapunov–based stability analysis where the result obtained in the mentioned preliminary analysis is used. Performance of the designed observer–controller couple is demonstrated via experimental results. The efficiency of the designed controller is tested against a robust proportional–integral–derivative (PID) controller and an another Lyapunov–based nonlinear robust controller called as robust integral of sign of error (RISE) controller. Experimental results show that the designed controller performs the best tracking performance with the least control effort among these three controllers.

FeXIV Line Emission Polarization of the July 11, 1991 Solar Corona

1994 ◽  
Vol 144 ◽  
pp. 541-547
Author(s):  
J. Sýkora ◽  
J. Rybák ◽  
P. Ambrož
Keyword(s):  
High Resolution ◽  
Solar Corona ◽  
Emission Line ◽  
Solar Eclipse ◽  
White Light ◽  
Preliminary Analysis ◽  
Line Emission ◽  
Total Solar Eclipse ◽  
Degree Of Polarization ◽  
High Resolution Images

AbstractHigh resolution images, obtained during July 11, 1991 total solar eclipse, allowed us to estimate the degree of solar corona polarization in the light of FeXIV 530.3 nm emission line and in the white light, as well. Very preliminary analysis reveals remarkable differences in the degree of polarization for both sets of data, particularly as for level of polarization and its distribution around the Sun’s limb.

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