Buros, Oscar Krisen. Statistical Methodology Reviews, 1941–1950. New York: John Wiley and Sons, Inc., 1951. 457 p. $7.00

Flooding normally occurs during periods of excessive precipitation or thawing in the winter period (ice jam). Flooding is typically accompanied by an increase in river discharge. This paper presents a statistical model for the prediction and explanation of the water discharge time series using an example from the Schoharie Creek, New York (one of the principal tributaries of the Mohawk River). It is developed with a view to wider application in similar water basins. In this study a statistical methodology for the decomposition of the time series is used. The Kolmogorov-Zurbenko filter is used for the decomposition of the hydrological and climatic time series into the seasonal and the long and the short term component. We analyze the time series of the water discharge by using a summer and a winter model. The explanation of the water discharge has been improved up to 81%. The results show that as water discharge increases in the long term then the water table replenishes, and in the seasonal term it depletes. In the short term, the groundwater drops during the winter period, and it rises during the summer period. This methodology can be applied for the prediction of the water discharge at multiple sites.

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Forward-Lighting Configurations for Snowplows

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198196153300109 ◽

1996 ◽

Vol 1533 (1) ◽

pp. 59-66 ◽

Cited By ~ 1

Author(s):

Peter Bajorski ◽

Suman Dhar ◽

Deniz Sandhu

Keyword(s):

New York ◽

Pilot Study ◽

New York State ◽

Reliable Data ◽

Statistical Methodology ◽

Methodological Issues ◽

York State ◽

Front End ◽

Ice Control ◽

Snow And Ice

Snow and ice control is a critical maintenance operation for New York State: each winter, up to 68 500 km (42,500 lane-mi) of highways must be cleared. Visibility during plowing operations is often poor and is further diminished by backscatter glare from the snowplow's own headlights as well as glare from lights of oncoming traffic. Results are summarized of a pilot study to identify forward (front-end) lighting configurations that might improve visibility for plow operators during such operations. During the 1993–1994 winter, eight lighting configurations were tested, two of which were identified as potential improvements over the existing pattern. Simple procedures and forms were developed for collecting reliable data. Methodological issues in performing such experiments are discussed. A statistical methodology is presented that is suitable for comparison of lighting configurations but is also applicable in other, broader contexts in which a number of items are compared by several evaluators.

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