740,974 research outputs found

    Counselor librarianship: a new departure.

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    "Select reading list on counseling and student personnel work": p.34-35. Bibliographical references included in "Footnotes" (p. 35-39)

    A NEW DEPARTURE

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    Are Airlines' Price Setting Strategies Different?

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    Using a sample of fare quotes for non-stop travel from New York to London, this paper investigates the dynamics of offered fares as the departure date nears. We find that the general trend is toward fare increase at an accelerated rate as the departure date approaches. Clear differences in price-setting strategies among the carriers competing on a particular route are documented

    A New Departure in Mental Measurements

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    At the 1933 meeting of this group we presented a brief discussion of a proposed new departure in the field of mental measurements. At that time we pointed out the rather widespread dissatisfaction with current types of mental and educational tests. The first criticism was based upon the lack of agreement of test theory with the best psychological knowledge. Another criticism dealt with the fact that tests (especially educational tests) tended to emphasize the measurement of mere possession of knowledge rather than the functional significance of such knowledge. Finally, it was noted that the primary concern of the psychologist in test building was to study the behavior of minds, and that to expect to study such behavior through an instrument not constructed in the light of our best knowledge of how the mind works was, in itself, an invalid procedure

    Working with single fathers in Western Siberia: a new departure in Russian social provision

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    Building Leaderful Organizations: Succession Planning for Nonprofits

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    Shares three approaches to planning for new leadership -- ongoing leadership development, planning for emergencies, and planning for a departure announced well in advance. Discusses the challenges nonprofits face, and lists tools and resources

    Are Airlines' Price-Setting Strategies Different?

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    Using a sample of fare quotes for non-stop travel from New York to London, this paper investigates the dynamics of offered fares as the departure date nears. We find that the general trend is toward fare increase at an accelerated rate as the departure date approaches. Clear differences in price-setting strategies among the carriers competing on a particular route are documented.airline industry, price dynamics

    On the global stability of departure time user equilibrium: A Lyapunov approach

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    In (Jin, 2018), a new day-to-day dynamical system was proposed for drivers' departure time choice at a single bottleneck. Based on three behavioral principles, the nonlocal departure and arrival times choice problems were converted to the local scheduling payoff choice problem, whose day-to-day dynamics are described by the Lighthill-Whitham-Richards (LWR) model on an imaginary road of increasing scheduling payoff. Thus the departure time user equilibrium (DTUE), the arrival time user equilibrium (ATUE), and the scheduling payoff user equilibrium (SPUE) are uniquely determined by the stationary state of the LWR model, which was shown to be locally, asymptotically stable with analysis of the discrete approximation of the LWR model and through a numerical example. In this study attempt to analytically prove the global stability of the SPUE, ATUE, and DTUE. We first generalize the conceptual models for arrival time and scheduling payoff choices developed in (Jin, 2018) for a single bottleneck with a generalized scheduling cost function, which includes the cost of the free-flow travel time. Then we present the LWR model for the day-to-day dynamics for the scheduling payoff choice as well as the SPUE. We further formulate a new optimization problem for the SPUE and demonstrate its equivalent to the optimization problem for the ATUE in (Iryo and Yoshii, 2007). Finally we show that the objective functions in the two optimization formulations are equal and can be used as the potential function for the LWR model and prove that the stationary state of the LWR model, and therefore, the SPUE, DTUE, and ATUE, are globally, asymptotically stable, by using Lyapunov's second method. Such a globally stable behavioral model can provide more efficient departure time and route choice guidance for human drivers and connected and autonomous vehicles in more complicated networks.Comment: 17 pages, 3 figure
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