2,617 research outputs found

    Players with limited memory

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    This paper studies a model of memory. The model takes into account that memory capacity is limited and imperfect. We study how agents with such memory limitations, who have very little information about their choice environment, play games. We introduce the notion of a Limited Memory Equilibrium (LME) and show that play converges to an LME in every generic normal form game. Our characterization of the set of LME suggests that players with limited memory do (weakly) better in games than in decision problems. We also show that agents can do quite well even with severely limited memory, although severe limitations tend to make them behave cautiously

    A Single-Stage Approach to Anscombe and Aumann's Expected Utility

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    expected utility theory;decision analysis;revealed preference

    Distribution of rare earth elements in the Yamuna and the chambal rivers, India

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    We report here the first measurements of dissolved rare earth elements (REE) in the headwaters of the Yamuna river draining through the southern slopes of Himalaya. Due to intense weathering of the surface rocks of different lithologies and influence of tributaries, Yamuna river waters have variable dissolved REE contents (87 < ΣREE < 1374 ng L-1, mean = 288.6 ng L-1) and exhibit negative Eu anomaly (0.49 < Eu/Eu < 0.73, mean = 0.63). While most of the samples do not show discernable Ce anomalies; a negative Ce anomaly, however, found in a few of them, which can be explained by the colloidal pool preferentially enriched in Ce. A comparison among the river waters and bed sediments suggests that dissolved composition of REE is strongly fractionated and is enriched in MREE (Nd-Gd) with respect to sediments; presumably due to preferential dissolution of phosphate minerals such as apatite during weathering processes. Along with the Yamuna river, bed sediments from the Chambal river (a Peninsular river) have also been analyzed for REE composition. Bed sediments in the Yamuna and the Chambal river basins are characterized by ΣREE concentrations in the range of 78 to 291 µg g-1 (mean = 165 µg g-1) and 96 to 157 µg g-1 (mean = 134 µg g-1), respectively. A characteristic feature observed in the REE-normalized patterns of bed sediments is a strong HREE enrichment and a relatively positive Eu anomaly with respect to the granites in the Yamuna river catchment. In contrast, the bed sediment samples of the Chambal river show significant LREE enrichment and Eu enrichment with respect to the Deccan basalts in its catchment. The feldspars and their secondary products, which are enriched in Eu, might be the cause of the Eu anomaly. In river sediments of both these basins, the enrichment factors (EF), with respect to PAAS are ≤2 suggesting that REE composition is mainly derived from weathering processes

    Educational Attainment: A Utah Women and Education Update

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    Utah leaders created a big goal: 66% of Utah’s population will have postsecondary degrees or vocational certificates by the year 2020. This goal is based on a report from the Georgetown University Center on Education and the Workforce that projected Utah’s economy will need 66% of its population with some form of postsecondary education by 2018 to remain competitive. Currently, 38.3% of Utahns hold associate degrees or higher. This baseline underscores the urgency of working toward the 66% goal. Figure 1 highlights the current gap in educational attainment
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