A framework for discrete change.

2010 ◽  
pp. 109-123
Author(s):  
Ingmar Visser ◽  
Brenda R. J. Jansen ◽  
Maarten Speekenbrink
Keyword(s):  
Discrete Change

Japanese enter/exit verbs revisited

2002 ◽  
Vol 26 (1) ◽  
pp. 165-180 ◽  
Author(s):  
Natsuko Tsujimura
Keyword(s):  
Motion Verbs ◽  
Change Of State ◽  
Spatial Expressions ◽  
Semantic Encoding ◽  
Discrete Change

Kita (1999) compares Japanese and English Enter/Exit verbs in spatial expressions, and argues that Japanese Enter/Exit verbs lack semantic encoding of motion. He claims that this runs counter to the view which considers motion and location to be primitives in the semantics of spatial expressions; instead, he proposes that discrete change of state should be included in the set of primitives. In this reply,I will first show that Kita’s evidence does not support lack of motion in Japanese Enter/Exit verbs, but that instead these verbs do pattern with motion verbs in the language, where conflation of motion is not disputable. I finally demonstrate that Kita’s claim about change of state may be well taken, but it should be put in a larger context of regular polysemy.

scholarly journals Creating a climate changed future with the sea level rise interactive- fiction game ‘Lagos2199’

2021 ◽  
Author(s):  
Patrick Keys ◽  
Matthew Keys
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Climate Change Impacts ◽  
Change Scenario ◽  
Scenario Development ◽  
Climate Change Education ◽  
Web Based ◽  
Survey Results ◽  
Discrete Change

Story-based futures serve an important role in climate change scenario development. Stories are particularly useful in exploring sea level rise possibilities, since we know many coastal areas are specifically vulnerable to accelerating rises in sea level. This discrete change in coastline is different from most other climate change impacts, and offers a clear basis for scientifically-informed, future scenarios. We demonstrate this with a creative world-building effort set in Lagos, Nigeria, in the year 2199. Further, we employ story-based scenario development, and create a learning-oriented, web-based game that allows users to experience stories in an open-ended, text-based adventure style. This collaborative process blended scientific research, story-telling, and artistic co-creation to iteratively construct the game ‘Lagos2199’. The first use-case of Lagos2199 is documented herein, with corresponding survey results from the student users. This work has three core conclusions. First, the unique reality that sea level rise will literally re-draw maps can be leveraged as an entry-point for world-building and scenario development of the future. Second, such a scenario can be blended with storytelling, art, and music to create a multi-dimensional, immersive exploration of ecological and social change. Third, this kind of game experience can serve an important pedagogical role in climate change education. Providing the next generation of citizens with fluency in both climate change impacts and how society will interact with such impacts, is critical for providing adaptive capacity over the coming decades and centuries of accelerating global change.

Star Power: The Effect of Monrningstar Ratings on Mutual Fund Flow

2008 ◽  
Vol 43 (4) ◽  
pp. 907-936 ◽  
Author(s):  
Diane Del Guercio ◽  
Paula A. Tkac
Keyword(s):  
Mutual Fund ◽  
Cross Sectional ◽  
Star Rating ◽  
Investment Allocation ◽  
Star Power ◽  
Fund Flow ◽  
Study Methodology ◽  
Rating Changes ◽  
Rating Downgrades ◽  
Discrete Change

AbstractWe apply an event-study methodology on over 10,000 Morningstar star rating changes and find that Morningstar has subsantial independent influence on the investment allocation decisions of retail mutual fund investors. It is the discrete change in the star rating itself and not the change in the underlying performance measures that drives frow. We document econnomically and statistically significant positive abnormal flow following rating upgrades, and negative abnormal flow following rating downgrades. In contrast to the cross-sectional flow performance literature, we find evidence of investor punishment of performance declines, some of which is evident immediately in the month of the rating change.

scholarly journals Optimal Planning of the Mobile Cargo Ropeway Repair Strategy

2021 ◽  
Author(s):  
Alexander V. Lagerev ◽  
Igor A. Lagerev
Keyword(s):  
Probability Of Failure ◽  
Optimal Planning ◽  
Structural Elements ◽  
Total Cost ◽  
Entire Life ◽  
Repair Strategy ◽  
Average Probability ◽  
Restoration Work ◽  
Discrete Change ◽  
Kinetics Of

Abstract The focus of this research is to increase the reliability of mobile cargo ropeways formed by autonomous self-propelled transport units. The article deals with the development of a method for forming an effective technical and economic strategy for the restoration during planned repairs of those structural elements of transport units that can lead to critical failures of the ropeway. The method involves predicting the kinetics of the probability of failure-free operation of the ropeway during the entire life of its operation on the basis of predicting the failure-free operation of key elements of the transport units, the failure of which leads to an emergency disruption of the ropeway. In the process of integrating the system of Chapman-Kolmogorov differential equations, its periodic reformation is performed at the time of planned repairs, which allows us to take into account the need for a discrete change in the probability of failure-free operation of the restored structural elements. As a criterion for the optimality of the repairs strategy, the condition for obtaining the minimum total cost of repairs is used, while ensuring the average probability of failure-free operation. The formation of such an optimal strategy includes planning the schedules, number, time points, volume and cost of restoration work. The effectiveness of the repair strategy is determined by the total number of planned repairs and the minimum permissible probability of critical failure of structural elements. Conditions have been established under which further improvement of the level of ropeway reliability becomes an economically unprofitable task.

scholarly journals Global propagation of massive quantum fields in the plane gravitational waves and electromagnetic backgrounds

2021 ◽  
Author(s):  
Krzysztof Andrzejewski ◽  
P. Kosiński
Keyword(s):  
Cross Sections ◽  
Electromagnetic Waves ◽  
Quantum Fields ◽  
Circularly Polarized ◽  
Dirac Delta ◽  
Phase Corrections ◽  
General Plane ◽  
Discrete Change ◽  
Infinite Range ◽  
Plane Gravitational Waves

Abstract The behavior of massive quantum fields in the general plane wave spacetime and external, non-plane, electromagnetic waves is studied. The asymptotic conditions, the ``in" (``out") states and the cross sections are analysed. It is observed that, despite of the singularities encountered, the global form of these states can be obtained: at the singular points the Dirac delta-like behavior emerges and there is a discrete change of phase of the wave function after passing through each singular point. The relations between these phase corrections and local charts are discussed. Some examples of waves of infinite range (including the circularly polarized ones) are presented for which the explicit form of solutions can be obtained. All these results concern both the scalar as well as spin one-half fields; in latter case the change of the spin polarization after the general sandwich wave has passed is studied.

scholarly journals Evaluation of metrological reliability of measuring instruments by method of generating functions

2020 ◽  
Vol 28 (2) ◽  
pp. 84-96
Author(s):  
Vladimir N. Yashin
Keyword(s):  
Generating Functions ◽  
Current Trend ◽  
Measuring Instruments ◽  
Metrological Reliability ◽  
Measuring Time ◽  
Time Intervals ◽  
Mathematical Operations ◽  
Discrete Change ◽  
Physical Quantities ◽  
Error Of Measurement

An article deals with problems related to the assessment of metrological reliability of measuring instruments by method of generating functions. Metrological reliability of measuring instruments is the most important characteristic that determines the accuracy and reliability of physical quantities measurements. In the suggested article, a confidence indicator is proposed as an evaluation of metrological reliability. The quantitative value of confidence indicator can be estimated by means of the method of generating functions. This is a scientific novelty of the work. Relevance of the problem of assessing the measuring instruments metrological reliability evaluation is substantiated in this paper since the current trend towards structural and functional complexity of measuring instruments may lead to decreasing of their reliability and, in particular, metrological reliability. The main goal of this work is to systematize the problems of reliability of measuring instruments and evaluate their metrological reliability using the method of generating functions. On the base of selected mathematical model of the evolution of error of measurement and proposed indicator of metrological reliability means of the method of generating functions allow to carry out metrological forecast of variability of the error of measurement depending on time. The model of gradual failures with a discrete change of the error over time, which is typical for a certain class of measuring instruments, for example, measuring time intervals, was chosen as a model for the evolution of the error of measuring instruments. The method of generating functions used for evaluating the metrological reliability of measuring instruments has made it possible to increase the efficiency of the algorithm for quantitative evaluation of metrological reliability of measuring instruments by simplifying the mathematical operations that underlie it.

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