scholarly journals Long-range migration of moths of agronomic importance to the United States and Canada : specific examples of occurrence and synoptic weather patterns conducive to migration : proceedings of a symposium presented at the combined annual meetings of the entomological societies of America and Canada, Toronto, Ontario, Canada, November 30, 1982 /

Author(s):  
Alton N. Sparks ◽  
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2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Di Zhu ◽  
Xinyue Ye ◽  
Steven Manson

AbstractWe describe the use of network modeling to capture the shifting spatiotemporal nature of the COVID-19 pandemic. The most common approach to tracking COVID-19 cases over time and space is to examine a series of maps that provide snapshots of the pandemic. A series of snapshots can convey the spatial nature of cases but often rely on subjective interpretation to assess how the pandemic is shifting in severity through time and space. We present a novel application of network optimization to a standard series of snapshots to better reveal how the spatial centres of the pandemic shifted spatially over time in the mainland United States under a mix of interventions. We find a global spatial shifting pattern with stable pandemic centres and both local and long-range interactions. Metrics derived from the daily nature of spatial shifts are introduced to help evaluate the pandemic situation at regional scales. We also highlight the value of reviewing pandemics through local spatial shifts to uncover dynamic relationships among and within regions, such as spillover and concentration among states. This new way of examining the COVID-19 pandemic in terms of network-based spatial shifts offers new story lines in understanding how the pandemic spread in geography.


1963 ◽  
Vol 16 (4) ◽  
pp. 389-398

In 1960 Hanssen and James described to the Institute a system developed and used by the United States Hydrographic Office for selecting the optimum track for transoceanic crossings by applying long-range predictions of winds, waves and currents to a knowledge of how the routed vessel reacts to these variables. The paper (Journal, 13, 253) described how, over a period of two years, an average reduction in travel time of 14 hours was achieved over 1000 optimum routes.In the present papers, presented at an Institute meeting held in London on 19 April, Captain Wepster of the Holland-America Line first of all goes into the benefits which effective ship routing offers the ship operator and then describes the results of the experimental routing programme undertaken by his Company in association with the Royal Netherlands Meteorological Institute. Mr. Verploegh of that Institute then discusses the programme from the forecaster's point of view.


1960 ◽  
Vol 13 (3) ◽  
pp. 253-272 ◽  
Author(s):  
George L. Hanssen ◽  
Richard W. James

The paper describes the system developed and used by the United States Hydrographic Office for selecting the optimum track for transoceanic crossings by applying long-range predictions of wind, waves and currents to a knowledge of how the routed vessel reacts to these variables. Over a period of two years, over 1000 optimum ship routes were provided to one authority, with an average reduction in travel time of 14 hours.


1968 ◽  
Vol 48 (3) ◽  
pp. 517
Author(s):  
Russell H. Fitzgibbon ◽  
John Plank

On Trend ◽  
2019 ◽  
pp. 42-61
Author(s):  
Devon Powers

Chapter 2 tells the story of how the trend forecasting business arose in the United States. The commercial trend business grew in the wake of popular frenzy about “future shock,” a term made famous by Alvin Toffler’s 1970 book of the same name. Toffler’s book also coincided with the birth of futurology--techniques developed among military strategists, long-range planners, and the like to study and better prepare for the future. In the hands of entrepreneurial futurists, futurological and social scientific methods became useful in consulting private enterprises on how to better prepare for the future. The trend business exploded during the 1970s and 1980s, giving rise to famous futurists such as Faith Popcorn, John Naisbitt, and Edie Weiner.


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