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...
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...
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...
This relative lag may be due to local policies, such as states’ responses to the opioid epidemic. Regional socioeconomic factors contribute to NAS rates56 but may not necessarily influence adoption of the X-waiver at the same rate. Beyond pregnancy, there remains a role for X-waivered ...
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...
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...
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...
representation. Resolution applies to data (i.e., representations), whereas granularity applies to conceptual models (see [4,5]). Resolution is only one of many components of scale, with other components including extent, grain, lag, support and cartographic ratio (see [6,7])....
The model, with a 1-week lag of Zika query and a 1-week lag of Zika cases as a control for autocorrelation, was found to be the most effective in predicting Zika cases. The results demonstrated the potential to forecast Zika cases a week ahead of outbreaks, offering healthcare authorities...
Moreover, counties within high-risk clusters in the north lag behind those within low-risk clusters in the south by at least a decade, and there are early signs that the temporal trends have reversed in rural counties in the Big Bend area. Thus, prevention and control strategies should be ...