894,855 research outputs found
Adieu à l'enfance de Liu Keng-i
No full textKeng-i Liu, Jacquet Raphaël. Adieu à l'enfance de Liu Keng-i. In: Perspectives chinoises, n°66, 2001. pp. 65-69
A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix
Full text linkIn this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The columns of the blocking matrix are derived from a prototype vector by cosine-modulation, and the broadside constraint is incorporated by imposing zeros on the prototype vector appropriately. These columns constitute a series of bandpass filters, which select signals with specific angles of arrival and frequencies. This results in highpass-type bandlimited spectra of the blocking matrix outputs, which is further exploited by subbands decomposition and suitably discarding the low-pass subbands prior to running independent unconstrained adaptive filters in each non-redundant subband. By these steps, the computational complexity of a GSC implementation is greatly reduced compared to fully adaptive GSC schemes, while performance is comparable or even enhanced due to subband decorrelation in both spatial and temporal domains
New Liu Estimators for the Poisson Regression Model: Method and Application
Full text linkA new shrinkage estimator for the Poisson model is introduced in this paper. This method is a generalization of the Liu (1993) estimator originally developed for the linear regression model and will be generalised here to be used instead of the classical maximum likelihood (ML) method in the presence of multicollinearity since the mean squared error (MSE) of ML becomes inflated in that situation. Furthermore, this paper derives the optimal value of the shrinkage parameter and based on this value some methods of how the shrinkage parameter should be estimated are suggested. Using Monte Carlo simulation where the MSE and mean absolute error (MAE) are calculated it is shown that when the Liu estimator is applied with these proposed estimators of the shrinkage parameter it always outperforms the ML. Finally, an empirical application has been considered to illustrate the usefulness of the new Liu estimators.Estimation; MSE; MAE; Multicollinearity; Poisson; Liu; Simulation
Time-resolved Systems Immunology Reveals a Late Juncture Linked to Fatal COVID-19. Liu et al
No full textSupplemental Tables 1-7 for the paper: Can Liu, Andrew J. Martins, William W. Lau, Nicholas Rachmaninoff, ..., John S. Tsang. (2021). "Time-resolved Systems Immunology Reveals a Late Juncture Linked to Fatal COVID-19." Cell. In Press
Test Make Sense?
No full textCorresponding author Changyu Liu should be listed as the first corresponding author.No Full Tex
Thermal decomposition of diazirines in the presence of meta-chloroperoxybenzoic acid. A method to determine the partitioning of reaction pathways
No full textPT: J; CR: AKIBA K, 1977, HETEROCYCLES, V7, P1131 BOYD RJ, 1978, 61ST CAN CHEM C WINN BRADLEY GF, 1977, J CHEM SOC P2, P1214 BRASLAVSKY S, 1977, CHEM REV, V77, P473 CURCI R, 1971, J ORG CHEM, V36, P3774 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 JENNINGS BM, 1976, J AM CHEM SOC, V98, P6416 KIRMSE W, 1971, CARBENE CHEM KOPECKY KR, 1969, CAN J CHEM, V47, P709 LAU A, 1964, SPECTROCHIM ACTA, V20, P97 LIU MTH, 1972, J PHYS CHEM-US, V76, P797 LIU MTH, 1974, CAN J CHEM, V52, P246 LIU MTH, 1974, TETRAHEDRON LETT, P1329 LIU MTH, 1975, TETRAHEDRON, V31, P1645 LIU MTH, 1977, CAN J CHEM, V55, P3596 MEIER H, 1977, ANGEW CHEM INT EDIT, V16, P835 SCHMIDT G, 1963, BIOCHEMISTRY-US, V2, P126 SCHMITZ E, 1964, ANGEW CHEM INT EDIT, V3, P333 SCHMITZ E, 1967, CHEM BER, V100, P2101 SCHWARTZ NN, 1964, J ORG CHEM, V29, P1976 SYNDER JP, 1971, J AM CHEM SOC, V93, P3816 TURRO NJ, 1974, ACCOUNTS CHEM RES, V7, P97; NR: 22; TC: 3; J9: CAN J CHEM; PG: 5; GA: HD871Source type: Electronic(1
WT LP01 from Liu lab, Yale
No full textType four secretion system, T4SS<strong>Tilt Series Date:</strong> 2016-11-28</p>
<strong>Data Taken By:</strong> Yuxi Liu</p>
<strong>Species / Specimen:</strong> Legionella pneumophila</p>
<strong>Strain:</strong> Philadelphia-1_Lp02</p>
<strong>Tilt Series Settings:</strong> Single Axis, tilt range: (-51.0°, 51.0°), step: 3°, constant angular increment, dosage: 50.0 eV/Ų, defocus: -5.0 μm, magnification: 15500x. </p>
<strong>Microscope:</strong> Caltech Polara</p>
<strong>Acquisition Software:</strong> Serial EM</p>
<strong>Upload Method:</strong> pipeline</p>
<strong>Processing Software Used:</strong> None</p>
<strong>Collaborators and Roles:</strong> Data collected by Bo Hu in Jun Liu lab at Yale from their Polara. Partial WT strain data set. Primary literature: doi: 10.1038/s41564-018-0165-z</p>Files available via S3 at https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-320</p>T4SSWTNov26A027_driftcorr.mrc, Tilt Series (Pixel Size 0.25 nm), 2.0 GB
<a role="button" class="ui compact mini button" href="https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-320/rawdata/T4SSWTNov26A027_driftcorr.mrc"
> <i class="download icon"></i> Download </a></p>
WT LP01 from Liu lab, Yale
No full textType four secretion system, T4SS<strong>Tilt Series Date:</strong> 2016-11-28</p>
<strong>Data Taken By:</strong> Yuxi Liu</p>
<strong>Species / Specimen:</strong> Legionella pneumophila</p>
<strong>Strain:</strong> Philadelphia-1_Lp02</p>
<strong>Tilt Series Settings:</strong> Single Axis, tilt range: (-51.0°, 51.0°), step: 3°, constant angular increment, dosage: 50.0 eV/Ų, defocus: -5.0 μm, magnification: 15500x. </p>
<strong>Microscope:</strong> Caltech Polara</p>
<strong>Acquisition Software:</strong> Serial EM</p>
<strong>Upload Method:</strong> pipeline</p>
<strong>Processing Software Used:</strong> None</p>
<strong>Collaborators and Roles:</strong> Data collected by Bo Hu in Jun Liu lab at Yale from their Polara. Partial WT strain data set. Primary literature: doi: 10.1038/s41564-018-0165-z</p>Files available via S3 at https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-371</p>T4SSWTNov26A078_driftcorr.mrc, Tilt Series (Pixel Size 0.25 nm), 2.0 GB
<a role="button" class="ui compact mini button" href="https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-371/rawdata/T4SSWTNov26A078_driftcorr.mrc"
> <i class="download icon"></i> Download </a></p>
WT LP01 from Liu lab, Yale
No full textType four secretion system, T4SS<strong>Tilt Series Date:</strong> 2016-11-28</p>
<strong>Data Taken By:</strong> Yuxi Liu</p>
<strong>Species / Specimen:</strong> Legionella pneumophila</p>
<strong>Strain:</strong> Philadelphia-1_Lp02</p>
<strong>Tilt Series Settings:</strong> Single Axis, tilt range: (-51.0°, 51.0°), step: 3°, constant angular increment, dosage: 50.0 eV/Ų, defocus: -5.0 μm, magnification: 15500x. </p>
<strong>Microscope:</strong> Caltech Polara</p>
<strong>Acquisition Software:</strong> Serial EM</p>
<strong>Upload Method:</strong> pipeline</p>
<strong>Processing Software Used:</strong> None</p>
<strong>Collaborators and Roles:</strong> Data collected by Bo Hu in Jun Liu lab at Yale from their Polara. Partial WT strain data set. Primary literature: doi: 10.1038/s41564-018-0165-z</p>Files available via S3 at https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-187</p>T4SSWTDec12A032_driftcorr.mrc, Tilt Series (Pixel Size 0.25 nm), 2.0 GB
<a role="button" class="ui compact mini button" href="https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-187/rawdata/T4SSWTDec12A032_driftcorr.mrc"
> <i class="download icon"></i> Download </a></p>
WT LP01 from Liu lab, Yale
No full textType four secretion system, T4SS<strong>Tilt Series Date:</strong> 2016-11-28</p>
<strong>Data Taken By:</strong> Yuxi Liu</p>
<strong>Species / Specimen:</strong> Legionella pneumophila</p>
<strong>Strain:</strong> Philadelphia-1_Lp02</p>
<strong>Tilt Series Settings:</strong> Single Axis, tilt range: (-51.0°, 51.0°), step: 3°, constant angular increment, dosage: 50.0 eV/Ų, defocus: -5.0 μm, magnification: 15500x. </p>
<strong>Microscope:</strong> Caltech Polara</p>
<strong>Acquisition Software:</strong> Serial EM</p>
<strong>Upload Method:</strong> pipeline</p>
<strong>Processing Software Used:</strong> None</p>
<strong>Collaborators and Roles:</strong> Data collected by Bo Hu in Jun Liu lab at Yale from their Polara. Partial WT strain data set. Primary literature: doi: 10.1038/s41564-018-0165-z</p>Files available via S3 at https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-75</p>LP02Jan30A017_driftcorr.mrc, Tilt Series (Pixel Size 0.25 nm), 2.0 GB
<a role="button" class="ui compact mini button" href="https://renc.osn.xsede.org/ini210004tommorrell/tomography_archive/ylx2016-11-28-75/rawdata/LP02Jan30A017_driftcorr.mrc"
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