scholarly journals Efficient randomized test-and-set implementations

2019 ◽  
Vol 32 (6) ◽  
pp. 565-586
Author(s):  
George Giakkoupis ◽  
Philipp Woelfel
Keyword(s):  
Biostatistics ◽  
2019 ◽  
Author(s):  
Nicholas P Jewell ◽  
Suzanne Dufault ◽  
Zoe Cutcher ◽  
Cameron P Simmons ◽  
Katherine L Anders

1983 ◽  
Vol 7 (2) ◽  
pp. 91-95 ◽  
Author(s):  
E. Liedberg ◽  
H. Hommerberg ◽  
B. M. Persson

In order to reduce the need for repeated changes of socket due to postoperative atrophy and resorption of oedema simple temporary limbs are required to delay the casting of individual sockets until the stump is more mature. A randomized study of 95 below-knee amputees was performed with a re-usable temporary one-size prosthesis of endoskeletal type with adjustable tube length. Total contact was obtained by moulding a thin plastic pillow containing small plastic pellets around the stump in parallel connected sections. As air was evacuated the pillow became rigid. The pillow was kept in place about the stump by Velcro bands. Physiotherapists were able to make all adjustments and ambulate the patient 1–2 hours a day. The training started 2–4 weeks after amputation and lasted for 1–4 weeks. Healing problems due to training did not occur in well healed stumps where training started 3 weeks or more after amputation. No negative influence on maturing of stump, hospital stay and walking ability three months after amputation was found.


2018 ◽  
Vol 05 (02) ◽  
pp. 1850019 ◽  
Author(s):  
Zhenyu Cui ◽  
Jun Deng

In this paper, we propose a Fenchel duality approach to study the minimization problem of the shortfall risk. We consider a general increasing and strictly convex loss function, which may be more general than the situation of convex risk measures usually assumed in the literature. We first translate the associated stochastic optimization problem to an equivalent static optimization problem, and then obtain the explicit structure of the optimal randomized test for both complete and incomplete markets. For the incomplete market case, to the best of our knowledge, we obtain for the first time the explicit randomized test, while previous literature only established the existence through the supermartingale optional decomposition approach. We also solve the shortfall risk minimization problem for an insider through the enlargement of filtrations approach.


2014 ◽  
Vol 49 (3) ◽  
pp. 331-343 ◽  
Author(s):  
Daryl B. O’Connor ◽  
Christopher J. Armitage ◽  
Eamonn Ferguson

Sign in / Sign up

Export Citation Format

Share Document