We document lead-lag effects in stock returns between co-headquartered firms operating in different sectors. Such geographic lead-lags yield risk-adjusted returdoi:10.2139/ssrn.2780139Parsons, Christopher A.Sabbatucci, RiccardoTitman, SheridanSocial Science Electronic Publishing...
Geographic Lead-Lag Effects, Parsons et. al (2019) 结论性质的大概就这几条:倒叙 1. Geographic Lead-Lag Effects年化收益率5%-6%(industry lead-lag effects的1/2) 2. 行业领先滞后效应在小市值、交易数量少、分析师报道较少的股票中表现很强,但是地理上的领先滞后效应与上述投资者关注(scrutiny审查)的代理...
我准备把在中国replicate geographic lead-leg effect的一些想法抄上来: 上面的思考来源于最开始复制的时候,完全按照equal weight去考虑同一省份的公司的影响没有得到很好的效果,如果假设lead-leg effect成立,那应该想办法更精准的刻画geographic relationship strength,简单的就是value,再加一点可能是距离。金还提到了高铁...
Climate drives population dynamics through multiple mechanisms, which can lead to seemingly context-dependent effects of climate on natural populations. For climate-sensitive diseases, such as dengue, chikungunya, and Zika, climate appears to have opposing effects in different contexts. Here we show tha...
For instance, certain adverse effects of habitat fragmentation on grizzly bear (Ursus arctos) populations may have a time lag of over a decade (Doak, 1995), whereas species with specialised habitat requirements, such as the western toad (Anaxtrus boreas) in North America (COSEWIC, 2012; ...
with neutral conditions by the end of spring and a burgeoning La Niña possible as early as June. Current forecast guidance is supportive of the idea that atmospheric conditions often lag changes in oceanic temperatures, and periods of wet and cool weather appear increasingly likely for parts of...
(Wheeler & Páez,2010). Due to several methodological advantages, GWR is often preferred over other methods, such as spatial lag or spatial error model. First, it accounts for geographic neighbors that vary by size (Cho & Gimpel,2012). Second, the model produces coefficient estimates that can...
1 However, the US continues to lag behind other wealthy nations in terms of both access and equity.2 The Veterans Health Administration (VHA) provides care to millions of veterans through a network of 171 medical centers and affiliated outpatient clinics.3 To improve access to care for veterans...
Modern game engines like Unity allow users to create realistic 3D environments containing terrains as well as natural and artificial objects easily and swi
as the study population because children are very sensitive to air pollution. We investigated the exposure-lag-response association between children's asthma and PM2.5 within the lag period, resulting in significantly lagged effects on children's asthma, especially from 2-day lag to 6-day lag. ...