Average performance of adaptive algorithms for programming co-ordinate measuring machines under budget constraint

Author(s):  
Hisham Ahmad Al-Mharmah
Author(s):  
Takuro Fukunaga ◽  
Takuya Konishi ◽  
Sumio Fujita ◽  
Ken-ichi Kawarabayashi

We formulate a new stochastic submodular maximization problem by introducing the performance-dependent costs of items. In this problem, we consider selecting items for the case where the performance of each item (i.e., how much an item contributes to the objective function) is decided randomly, and the cost of an item depends on its performance. The goal of the problem is to maximize the objective function subject to a budget constraint on the costs of the selected items. We present an adaptive algorithm for this problem with a theoretical guaran-√ tee that its expected objective value is at least (1−1/ 4 e)/2 times the maximum value attained by any adaptive algorithms. We verify the performance of the algorithm through numerical experiments.


2010 ◽  
Vol 96 (3) ◽  
pp. 8-15 ◽  
Author(s):  
Elizabeth S. Grace ◽  
Elizabeth J. Korinek ◽  
Zung V. Tran

ABSTRACT This study compares key characteristics and performance of physicians referred to a clinical competence assessment and education program by state medical boards (boards) and hospitals. Physicians referred by boards (400) and by hospitals (102) completed a CPEP clinical competence assessment between July 2002 and June 2010. Key characteristics, self-reported specialty, and average performance rating for each group are reported and compared. Results show that, compared with hospital-referred physicians, board-referred physicians were more likely to be male (75.5% versus 88.3%), older (average age 54.1 versus 50.3 years), and less likely to be currently specialty board certified (80.4% versus 61.8%). On a scale of 1 (best) to 4 (worst), average performance was 2.62 for board referrals and 2.36 for hospital referrals. There were no significant differences between board and hospital referrals in the percentage of physicians who graduated from U.S. and Canadian medical schools. The most common specialties referred differed for boards and hospitals. Conclusion: Characteristics of physicians referred to a clinical competence program by boards and hospitals differ in important respects. The authors consider the potential reasons for these differences and whether boards and hospitals are dealing with different subsets of physicians with different types of performance problems. Further study is warranted.


2014 ◽  
Vol 8 (2) ◽  
pp. 229-246
Author(s):  
Azis Muslim

Penelitian ini bertujuan untuk mengetahui apakah terdapat kointegrasi antara ekspor dan impor di Indonesia. Metode yang digunakan dalam penelitian ini adalah Uji Kointegrasi Gregory-Hansen dengan pertimbangan adanya structural break berdasarkan pada data tahunan ekspor impor Indonesia dari tahun 1970 sampai dengan 2013. Hasil penelitian memperlihatkan bahwa tidak terjadi kointegrasi antara ekspor dan impor. Hal ini berarti bahwa Indonesia menghadapi masalah neraca pembayaran, serta defisit perdagangan yang terjadi bukan merupakan fenomena jangka pendek. This research aims to investigate empirically the existence of Indonesian export import cointegration. This Research used the Gregory-Hansen cointegration analysis due to structural break based on Indonesia Export import annual data (period of 1970-2013 ). The results showed that there is no-cointegration of Indonesia export and import which means that Indonesia is facing international budget constraint and trade deficit isn’t a short term phenomenon.


2020 ◽  
Vol 28 (3) ◽  
pp. 267-273
Author(s):  
E. S. Kaznacheeva ◽  
V. M. Kuz’kin ◽  
G. A. Lyakhov ◽  
S. A. Pereselkov ◽  
S. A. Tkachenko
Keyword(s):  

1989 ◽  
Author(s):  
Peter W. Glynn ◽  
Philip Heidelberger
Keyword(s):  

2018 ◽  
Vol 68 (s1) ◽  
pp. 125-139
Author(s):  
Jerzy Hausner ◽  
Andrzej Sławiński

In our paper we focus on situations when central banks have to conduct monetary policy in a world in which they cannot rely fully on what is regarded the best practice and they have to cope with financial system inherent tendency to be unstable. Both phenomena are rooted in János Kornai’s intellectual heritage highlighting that economy tends to divert from equilibrium and that soft budget constraint erodes economic actors’ behavior.


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