Accurately assessing the relationship between tree growth and climatic factors is of great importance in dendrochronology.This study evaluated the consistency between alternative climate datasets(including station and...Accurately assessing the relationship between tree growth and climatic factors is of great importance in dendrochronology.This study evaluated the consistency between alternative climate datasets(including station and gridded data)and actual climate data(fixed-point observations near the sampling sites),in northeastern China’s warm temperate zone and analyzed differences in their correlations with tree-ring width index.The results were:(1)Gridded temperature data,as well as precipitation and relative humidity data from the Huailai meteorological station,was more consistent with the actual climate data;in contrast,gridded soil moisture content data showed significant discrepancies.(2)Horizontal distance had a greater impact on the representativeness of actual climate conditions than vertical elevation differences.(3)Differences in consistency between alternative and actual climate data also affected their correlations with tree-ring width indices.In some growing season months,correlation coefficients,both in magnitude and sign,differed significantly from those based on actual data.The selection of different alternative climate datasets can lead to biased results in assessing forest responses to climate change,which is detrimental to the management of forest ecosystems in harsh environments.Therefore,the scientific and rational selection of alternative climate data is essential for dendroecological and climatological research.展开更多
In the financial sector,alternatives to traditional datasets,such as financial statements and Securities and Exchange Commission filings,can provide additional ways to describe the running status of businesses.Nontrad...In the financial sector,alternatives to traditional datasets,such as financial statements and Securities and Exchange Commission filings,can provide additional ways to describe the running status of businesses.Nontraditional data sources include individual behaviors,business processes,and various sensors.In recent years,alternative data have been leveraged by businesses and investors to adjust credit scores,mitigate financial fraud,and optimize investment portfolios because they can be used to conduct more in-depth,comprehensive,and timely evaluations of enterprises.Adopting alternative data in developing models for finance and business scenarios has become increasingly popular in academia.In this article,we first identify the advantages of alternative data compared with traditional data,such as having multiple sources,heterogeneity,flexibility,objectivity,and constant evolution.We then provide an overall investigation of emerging studies to outline the various types,emerging applications,and effects of alternative data in finance and business by reviewing over 100 papers published from 2015 to 2023.The investigation is implemented according to application scenarios,including business return prediction,business risk management,credit evaluation,investment risk prediction,and stock prediction.We discuss the roles of alternative data from the perspective of finance theory to argue that alternative data have the potential to serve as a bridge toward achieving high efficiency in financial markets.The challenges and future trends of alternative data in finance and business are also discussed.展开更多
A new system called alternate data acquisition and real-time monitoring system has been developed for long-time discharge in tokamak operation. It can support continuous on-line data acquisition at a high sampling rat...A new system called alternate data acquisition and real-time monitoring system has been developed for long-time discharge in tokamak operation. It can support continuous on-line data acquisition at a high sampling rate and a graphic display of the plasma parameters during the discharge. Thus operators can monitor and control the plasma state in real time. An application of this system has been demonstrated on the HT-7 tokamak.展开更多
Corporate online sales data are embedded with high informational value.Focusing on auditors who are concerned about information quality,this paper systematically tests the governance effect of releasing third-party on...Corporate online sales data are embedded with high informational value.Focusing on auditors who are concerned about information quality,this paper systematically tests the governance effect of releasing third-party online sales data on audit quality.Using the first aggregate release of online sales data in 2018 as an exogenous shock,we use the difference-in-differences model and empirically demonstrate that the audit quality of firms with released online sales data improves significantly after 2018.Subsequent analyses demonstrate that releasing online sales data has a governance effect by improving internal control quality,audit efficiency and audit prudence.The findings demonstrate that the aggregate release of third-party online sales data could have positive economic consequences.展开更多
基金supported by the International Partnership program of the Chinese Academy of Sciences(170GJHZ2023074GC)National Natural Science Foundation of China(42425706 and 42488201)+1 种基金National Key Research and Development Program of China(2024YFF0807902)Beijing Natural Science Foundation(8242041),and China Postdoctoral Science Foundation(2025M770353).
文摘Accurately assessing the relationship between tree growth and climatic factors is of great importance in dendrochronology.This study evaluated the consistency between alternative climate datasets(including station and gridded data)and actual climate data(fixed-point observations near the sampling sites),in northeastern China’s warm temperate zone and analyzed differences in their correlations with tree-ring width index.The results were:(1)Gridded temperature data,as well as precipitation and relative humidity data from the Huailai meteorological station,was more consistent with the actual climate data;in contrast,gridded soil moisture content data showed significant discrepancies.(2)Horizontal distance had a greater impact on the representativeness of actual climate conditions than vertical elevation differences.(3)Differences in consistency between alternative and actual climate data also affected their correlations with tree-ring width indices.In some growing season months,correlation coefficients,both in magnitude and sign,differed significantly from those based on actual data.The selection of different alternative climate datasets can lead to biased results in assessing forest responses to climate change,which is detrimental to the management of forest ecosystems in harsh environments.Therefore,the scientific and rational selection of alternative climate data is essential for dendroecological and climatological research.
基金sponsored by the National Natural Science Foundation of China(72371032)the National Key Research and Development Program of China(2023YFC3305401).
文摘In the financial sector,alternatives to traditional datasets,such as financial statements and Securities and Exchange Commission filings,can provide additional ways to describe the running status of businesses.Nontraditional data sources include individual behaviors,business processes,and various sensors.In recent years,alternative data have been leveraged by businesses and investors to adjust credit scores,mitigate financial fraud,and optimize investment portfolios because they can be used to conduct more in-depth,comprehensive,and timely evaluations of enterprises.Adopting alternative data in developing models for finance and business scenarios has become increasingly popular in academia.In this article,we first identify the advantages of alternative data compared with traditional data,such as having multiple sources,heterogeneity,flexibility,objectivity,and constant evolution.We then provide an overall investigation of emerging studies to outline the various types,emerging applications,and effects of alternative data in finance and business by reviewing over 100 papers published from 2015 to 2023.The investigation is implemented according to application scenarios,including business return prediction,business risk management,credit evaluation,investment risk prediction,and stock prediction.We discuss the roles of alternative data from the perspective of finance theory to argue that alternative data have the potential to serve as a bridge toward achieving high efficiency in financial markets.The challenges and future trends of alternative data in finance and business are also discussed.
基金Meg-science Program of the Chinese Academy of Sciences (No. 19981303)
文摘A new system called alternate data acquisition and real-time monitoring system has been developed for long-time discharge in tokamak operation. It can support continuous on-line data acquisition at a high sampling rate and a graphic display of the plasma parameters during the discharge. Thus operators can monitor and control the plasma state in real time. An application of this system has been demonstrated on the HT-7 tokamak.
基金financial support from the National Natural Science Foundation of China(No.72272132).Pro fessional English language editing support provided by AsiaEdit(asiaedit.com).
文摘Corporate online sales data are embedded with high informational value.Focusing on auditors who are concerned about information quality,this paper systematically tests the governance effect of releasing third-party online sales data on audit quality.Using the first aggregate release of online sales data in 2018 as an exogenous shock,we use the difference-in-differences model and empirically demonstrate that the audit quality of firms with released online sales data improves significantly after 2018.Subsequent analyses demonstrate that releasing online sales data has a governance effect by improving internal control quality,audit efficiency and audit prudence.The findings demonstrate that the aggregate release of third-party online sales data could have positive economic consequences.
