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991.
P G Goldschmidt 《Physician executive》1989,15(5):12-17
In this continuation of his article, the author defines severity and acuity of illness and discusses approaches to the measurement of the two factors. He provides some background on severity of illness measures that are in current use and prepares for a discussion of the uses of these measures. 相似文献
992.
993.
We characterize games which induce truthful revelation of the players’ preferences, either as dominant strategies (straightforward
games) or in Nash equilibria. Strategies are statements of individual preferences on R
n
. Outcomes are social preferences. Preferences over outcomes are defined by a distance from a bliss point. We prove that g is straightforward if and only if g is locally constant or dictatorial (LCD), i.e., coordinate-wise either a constant or a projection map locally for almost all strategy profiles. We also establish that: (i) If a game is straightforward and respects unanimity, then the
map g must be continuous, (ii) Straightforwardness is a nowhere dense property, (iii) There exist differentiable straightforward
games which are non-dictatorial. (iv) If a social choice rule is Nash implementable, then it is straightforward and locally
constant or dictatorial.
Received: 30 December 1994/Accepted: 22 April 1996 相似文献
994.
995.
Spencer G. Niles 《The Career development quarterly》2003,52(1):70-77
The current challenges confronting career counselors require increased discourse regarding career counseling models. Some authors have initiated this discourse, but more participants are needed. The need also exists to communicate more aggressively the special expertise that career counselors bring to their work. As career counselors construct contemporary intervention models, they will need to engage in action research to demonstrate accountability and to document that their services are effective. Career counselors can embrace these activities by building on past practices to construct a vision for the future. 相似文献
996.
This article shows how admission and enrollment processes affect the interpretation of simple validation studies of academic performance. In a competitive market for students, optimal behavior of admissions committees and applicants drives the simple correlation between test scores and performance toward zero, regardless of the relationship in the population of prospective students. Data from our university's MBA program support the prediction that applicants exhibit a higher correlation between test scores and undergraduate GPAs than do current students. This suggests that standard validation studies will understate the importance of GMAT scores in predicting performance of potential MBA students. (JEL C24 , I121 , C52 ) 相似文献
997.
Martina Löw 《Soziologie》2005,34(2):219-222
Ohne Zusammenfassung 相似文献
998.
Astrid Schreyögg 《Organisationsberatung, Supervision, Coaching》2003,10(4):299-300
999.
1000.
Martin Becker Ralph Friedmann Stefan Klößner Walter Sanddorf-Köhle 《AStA Advances in Statistical Analysis》2007,91(1):3-21
New tests are proposed for the specification of the intraday price process of a risky asset,
based on open, high, low, and close prices. Under the null of a Brownian process we derive two stochastically
independent, unbiased volatility estimators. For a Hausman specification test we prove its equivalence
with an F-test, consider its robustness against variation in drift and volatility, and analyze the power
against an Ornstein–Uhlenbeck process, as well as a random walk with alternative distributions. 相似文献