User profiles for John J. Ball

John Ball

Heriot-Watt University, Edinburgh and University of Oxford
Verified email at hw.ac.uk
Cited by 19663

Evaluation of the diagnostic accuracy of the risk of ovarian malignancy algorithm in women with a pelvic mass

…, LM Landrum, W Gajewski, JJ Ball… - Obstetrics & …, 2011 - journals.lww.com
OBJECTIVE: It is often difficult to distinguish a benign pelvic mass from a malignancy and
tools to help referring physician are needed. The purpose of this study was to validate the Risk …

Combining clinical assessment and the Risk of Ovarian Malignancy Algorithm for the prediction of ovarian cancer

…, MC Miller, LM Landrum, W Gajewski, JJ Ball… - Gynecologic …, 2014 - Elsevier
Objectives ACOG guidelines for the evaluation of women with a pelvic mass employ a
combination of physical exam, imaging, and CA125 to guide physicians in the triage of women to …

[HTML][HTML] Observation of External Wounding on Green Ash (Fraxinus pennsylvanica Marshall) Trees Associated with Tree Injection Systems

RJ Hauer, JJ Ball, E North - Forests, 2022 - mdpi.com
Field observations of external wounds associated with two common tree injection methods
compared open (plug-less) and sealed (plug) systems in green ash (Fraxinus pennsylvanica …

[PDF][PDF] Remarks on blow-up and nonexistence theorems for nonlinear evolution equations

JM Ball - The Quarterly Journal of Mathematics, 1977 - researchgate.net
OVER the last 20 years a large literature has developed concerning evolution equations
which for certain initial data possess solutions that do not exist for all time. The bulk of this …

Strongly continuous semigroups, weak solutions, and the variation of constants formula

JM Ball - Proceedings of the American Mathematical Society, 1977 - ams.org
Let A be a densely defined closed linear operator on a Banach space X, and let $ f\in {L^ 1}(0,\tau;
X) $. A definition of weak solutions of the equation $\dot u= Au+ f (t) $ is given. It is …

Convexity conditions and existence theorems in nonlinear elasticity

JM Ball - Archive for rational mechanics and Analysis, 1976 - Springer
The purpose of this article is to present existence theorems for various equilibrium boundary-value
problems of nonlinear elasticity in one, two and three dimensions under realistic …

Case no. 1: one hundred years of forest management

JJ Ball, PR Schaefer - Journal of forestry, 2000 - academic.oup.com
Stands of ponderosa pine in the Black Hills National Forest have been subject to management
by professional foresters longer than any other western timber type. This management …

The Shigometer as predictor of bronze birch borer risk.

JJ Ball, GA Simmons - 1984 - cabidigitallibrary.org
[See FA 43, 1716] Stem electrical resistance was recorded in June and July 1981 for 20 Betula
pendula trees (10-15 yr old) in an abandoned nursery in Michigan. Over the same period, …

[PDF][PDF] Global attractors for damped semilinear wave equations

JM Ball - Discrete and Continuous Dynamical Systems, 2004 - people.maths.ox.ac.uk
… In order to handle nonuniqueness of solutions, we use the framework of generalized
semiflows developed in Ball [7]. This is one of several related approaches (the earliest being …

The survival of mountain pine beetle in unpeeled logs

JJ Ball, CA Taecker - Western Journal of Applied Forestry, 2013 - academic.oup.com
The mountain pine beetle (Dendroctonus ponderosae) is the most serious pest of ponderosa
pine (Pinus ponderosa). Management of this insect involves indirect controls, reducing …