نتایج جستجو برای: economic thresholds

تعداد نتایج: 349782  

2006
Stefan Boes Rainer Winkelmann

Increasing evidence from the empirical economic and psychological literature suggests that positive and negative well-being are more than opposite ends of the same phenomenon. Two separate measures of the dependent variable may be needed when analyzing the determinants of subjective well-being. We argue that this conclusion reflects in part the use of too restrictive econometric models. A flexi...

Journal: :The American journal of clinical nutrition 2016
Samuel N Cheuvront Colleen X Muñoz Robert W Kenefick

Urine concentration can be used to assess fluid intake adequacy or to diagnose dehydration. However, too often urine concentration is used inappropriately to draw dubious conclusions that could have harmful health and economic consequences. Inappropriate uses of urine concentration relate primarily to convenience sampling (timing) and problems related to convenience sampling (misapplication of ...

2008
Chung-Yuan Huang Chuen-Tsai Sun Chia-Ying Cheng Yu-Shiuan Tsai

Whether or not a critical threshold exists when epidemic diseases are spread in complex networks is a problem attracting attention from researchers in several disciplines. In 2001, Pastor-Satorras and Vespignani used a computational simulations approach to show that epidemic diseases which spread through scale-free social networks do not have positive critical thresholds. In other words, even i...

Journal: :Journal of Historical Archaeology & Anthropological Sciences 2018

2014
Qiang He Mark D. Bertness John F. Bruno Bo Li Guoqian Chen Tyler C. Coverdale Andrew H. Altieri Junhong Bai Tao Sun Steven C. Pennings Jianguo Liu Paul R. Ehrlich Baoshan Cui

Despite their value, coastal ecosystems are globally threatened by anthropogenic impacts, yet how these impacts are driven by economic development is not well understood. We compiled a multifaceted dataset to quantify coastal trends and examine the role of economic growth in China's coastal degradation since the 1950s. Although China's coastal population growth did not change following the 1978...

Journal: :Complementary therapies in medicine 2012
E M M Ambrósio K Bloor H MacPherson

BACKGROUND The economic burden that chronic pain conditions impose on individuals and society is significant. Acupuncture appears to be a clinically effective treatment for some chronic pain conditions. Given the need for policy decisions to be informed by economic evaluations, the objective of this systematic review was to synthesise data from economic evaluations to determine whether acupunct...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2008
Joshua Farley

Until recent decades, economic decision makers have largely ignored the nonmarket benefits provided by nature, resulting in unprecedented threats to ecological life-support functions. The economic challenge today is to decide how much ecosystem structure can be converted to economic production and how much must be conserved to provide essential ecosystem services. Many economists and a growing ...

2013
Matthew J. W. Cock Gillian B. Allard

The authors made two visits to the Juba Sugar Project in south-west Somalia, at the beginning of the minor rains in October 1986, and at the beginning of the main rains in March 1987. Observations were made on morphospecies of scarabaeid white grub larvae, the adults, and the two associated for the key economic species, Cochliotis melolonthoides and Brachylepis werneri. Sampling larvae and adul...

2002
Robert A. Josefek Robert J. Kauffman

Managing information systems (IS) professionals in American industry has been making headlines as technology-intensive businesses search for ways to cope with an ever-changing economic landscape. Consequently, understanding and predicting the impact of workforce-related policy and interventions that can influence employee behavior is crucial. This paper introduces three constructs aimed at refi...

2001
BRYAN L. BOULIER

This paper questions whether the spread between long and short-term interests rates is a good cyclical indicator of US economic activity. Probit regressions using the term spread as an independent variable are used to forecast the probability of a recession and the forecasts are evaluated. Using alternative probability thresholds, the turns that were predicted, their timing and the number of re...

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