1,021 research outputs found
Nurses\u27 Alumnae Association Bulletin, April 1955
Alumnae Notes
Annual Giving
Committee Reports
Digest of Alumnae Meetings
Graduation Awards - 1954
Legal Aspects of Nursing
Marriages
Necrology
New Arrivals
Physical Advances at Jefferson
President\u27s Message
School of Nursing Report
The Challenge of Neurosurgical Nursin
Nurses\u27 Alumnae Association Bulletin, May 1956
Alumnae Notes
Anesthesiology at Jefferson
Committee Reports
Digest of Alumnae Meetings
Graduation Awards - 1955
Marriages
Necrology
New Arrivals
Physical Advances at Jefferson
President\u27s Message
School of Nursing Report
Thomas A. Shallow Memorial Fun
A new Egyptological Society. France and Russia. Discontent in Cuba. 53.—^The Boer Home Industries and Aid Society. Christianity in Japan. The Philosophy of Pain . How Far Have We Strayed from Christianity? An Eastern View of Western Civilization.
Non-equilibrium two-phase coexistence in a confined granular layer
We report the observation of the homogenous nucleation of crystals in a dense
layer of steel spheres confined between two horizontal plates vibrated
vertically. Above a critical vibration amplitude, two-layer crystals with
square symmetry were found to coexist in steady state with a surrounding
granular liquid. By analogy to equilibrium hard sphere systems, the phase
behavior can be explained through entropy maximization. However, dramatic
non-equilibrium effects are present, including a significant difference in the
granular temperatures of the two phases.Comment: 4 pages, 3 figures, RevTex4 forma
Nurses\u27 Alumnae Association Bulletin, September 1958
Committee Reports
Digest of Alumnae Meetings
Graduation Awards - 1957
List of Wrong Addresses
Marriages
Necrology
New Arrivals
Physical Advances at Jefferson
President\u27s Message
School of Nursing Repor
Tuning of Cascaded Controllers for Robust Grid-Forming Voltage Source Converter
International audienceFrom the origin of the grid, energy has been delivered to electrical loads mainly by synchronous machines. All the main rules to manage the grid have been based on the electromechanical behavior of these machines which have been extensively studied for many years. Due to the increase of HVDC link and renewable energy sources as wind turbine and PV, power converters are massively introduced in the grid with a fundamentally different dynamic behavior. Some years ago, they were connected as simple power injector. Then, they were asked to provide some ancillary services to the grid, in the future, grid forming capability will be required. Even if gridforming converters had been extensively studied for microgrids and offshore grids, it has to be adapted to transmission grid where the topology may be largely modified. This paper presents an algorithm for calculating the controller parameters of a gridforming converter which guarantee a stable behavior for many different configurations of the grid
Le redéploiement des activités agricole, pastorale et forestière au sein du massif forestier : une contribution à la prévention des incendies de forêts
International audienc
Nurses\u27 Alumnae Association Bulletin, May 1957
Alumnae Notes
Committee Reports
Digest of Alumnae Meetings
Graduation Awards - 1956
Letter from Hong Kong
Leukemia
Marriages
Necrology
New Arrivals
Physical Advances at Jefferson
President\u27s Message
School of Nursing Report
Two Year Programs in Nursing
White Haven Repor
Adjusting for verification bias in diagnostic accuracy measures when comparing multiple screening 2 tests - an application to the IP1-PROSTAGRAM study
Introduction Novel screening tests used to detect a target condition are compared against either a reference standard or other existing screening methods. However, as it is not always possible to apply the reference standard on the whole population under study, verification bias is introduced. Statistical methods exist to adjust estimates to account for this bias. We extend common methods to adjust for verification bias when multiple tests are compared to a reference standard using data from a prospective double blind screening study for prostate cancer. Methods Begg and Greenes method and multiple imputation are extended to include the results of multiple screening tests which determine condition verification status. These two methods are compared to the complete case analysis using the IP1-PROSTAGRAM study data. IP1-PROSTAGRAM used a paired84 cohort double-blind design to evaluate the use of imaging as alternative tests to screen for prostate 85 cancer, compared to a blood test called prostate specific antigen (PSA). Participants with positive imaging (index) and/or PSA (control) underwent a prostate biopsy (reference). Results When comparing complete case results to Begg and Greenes and methods of multiple imputation there is a statistically significant increase in the specificity estimates for all screening tests. Sensitivity estimates remained similar across the methods, with completely overlapping 95% confidence intervals. Negative predictive value (NPV) estimates were higher when adjusting for verification bias, compared to complete case analysis, even though the 95% confidence intervals overlap. Positive predictive value (PPV) estimates were similar across all methods. Conclusion Statistical methods are required to adjust for verification bias in accuracy estimates of screening tests. Expanding Begg and Greenes method to include multiple screening tests can be computationally intensive, hence multiple imputation is recommended, especially as it can be modified for low prevalence of the target condition
Nurses\u27 Alumnae Association Bulletin, December 1968
President\u27s Message
Officers and Committee Chairman
Financial Report
Report to Alumnae Association
Annual Report to Alumnae Association
School of Practical Nursing Report
Student Activities
Nursing Service Staff Association
Letter from Vietnam
Resume of Alumnae Meetings
Ways and Means Report
Social Committee
Building Fund Report
Bulletin Committee Report
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