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1.
Aleksy Kwilinski; 《Sustainable Development》2024,32(5):5797-5811
Digital technology, including advancements in artificial intelligence, the Internet of Things, and data analytics, has the potential to revolutionize tackling the problem of carbon dioxide emissions and achieving sustainable development. The paper aims at checking the nature of the impact of digital technology development on carbon dioxide reduction for the EU countries in 2013–2020. The study applies the following methods: entropy methods, panel-corrected standard error, and feasible generalized least squares. The digital technology development index enabled the classification of all the EU countries into two distinct groups: High Digital Technology Development and Moderate/Lower Digital Technology Development. The findings confirm that digital technology development has a significant impact on decreasing carbon dioxide emissions. In the first stage, the growth of digital technology causes a faster decrease in carbon dioxide emissions. However, beyond a certain threshold, the further improvement of digital technology results in diminishing marginal benefits of CO2 emissions reduction. Thus, the EU government should catalyze the extension of digital technologies among all sectors and levels. In addition, it requires enhancing digital literacy of the society and local authorities. 相似文献
2.
Expanding digital data sources, including social media and online news, provide a low-cost way to examine human–nature interactions, such as wildlife exploitation. However, the extent to which using such data sources can expand or bias understanding of the distribution and intensity of threats has not been comprehensively assessed. To address this gap, we quantified the geographical and temporal distribution of online sources documenting the hunting and trapping, consumption, or trade of bats (Chiroptera) and compared these with the distribution of studies obtained from a systematic literature search and species listed as threatened by exploitation on the International Union for Conservation of Nature Red List. Online records were collected using automated searches of Facebook, Twitter, Google, and Bing and were filtered using machine classification. This yielded 953 relevant social media posts and web pages, encompassing 1099 unique records of bat exploitation from 84 countries. Although the number of records per country was significantly predicted by the number of academic studies per country, online records provided additional locations and more recent records of bat exploitation, including 22 countries not present in academic literature. This demonstrates the value of online resources in providing more complete geographical representation. However, confounding variables can bias the analysis of spatiotemporal trends. Online bat exploitation records showed peaks in 2020 and 2014, after accounting for increases in internet users through time. The second of these peaks could be attributed to the COVID-19 outbreak, and speculation about the role of bats in its epidemiology, rather than to true changes in exploitation. Overall, our results showed that data from online sources provide additional knowledge on the global extent of wildlife exploitation, which could be used to identify early warnings of emerging threats and pinpoint locations for further research. 相似文献
3.
对山东数字化台网荣成、烟台、莱阳、潍坊、苍山和大山台记录的垂直向P波初动半振幅、S波与P波的振幅比、P波、S波的卓越周期及振动持续时间比等参数进行了测算,并将之与同台址相应的模拟记录进行了对比,得出分析结果为:1 数字记录的速度震级较模拟记录的位移震级平均偏小0 11,数字记录的仿真震级与模拟记录的位移震级基本一致。2 数字记录的地震波参数与模拟记录一致性较好,没有明显差异。 相似文献
4.
可视化灾害数字仿真重构理论及实证研究(Ⅱ)--理论框架与概念化范式 总被引：2，自引：1，他引：2
可视化灾害数字仿真重构理论研究,不仅可以实现对灾害空间数据进行有效的集成管理和时空分析,而且为灾害的防治、应急管理和工程论证等提供可靠的依据,是解决灾害实验的危险性和不可重复性的最佳途径.本文提出可视化灾害数字仿真重构理论的概念、研究对象和方法,综述该理论所需要涉及多种跨学科的技术支持,提出灾害数字仿真重构理论的实施流程,按照致灾因子孕育、发生以及作用于承灾体形成灾害的过程为线索,建立灾害数字仿真模型的概念化范式.上述工作共同构成灾害数字仿真重构的完整理论体系. 相似文献
5.
江苏数字地震台网已建设改造了 8个台站。对 8个台站记录到的背景噪声进行定量分析 ,测定背景噪声的地动速度均方根值 (RMS)、有效测量动态范围 (D有效)和噪声功率谱。结果表明 :受台基和海潮等观测环境的影响 ,大部分台站的地动速度RMS值高于 2 × 1 0 -8m/s,降低D有效 值。背景噪声功率谱峰值频率为 2 5～ 3 0Hz。这些定量分析为了解数字地震台网的实际监测水平提供了可靠依据 相似文献
6.
基于应力场与含水层井水位的关系 ,以DD模式为例 ,用数值模拟的方法讨论了同一孕震模式下不同地点的井水位变化。研究表明 ,同一孕震模式下水位存在不同的前兆现象 ,这些前兆现象水位变化形态与观测井相对于孕震区的不同位置有密切关系。本文同时给出了DD模式下不同地点的水位前兆变化特征 相似文献
7.
姜长宁 《防灾减灾工程学报》2001,21(2):1-5
依据江苏数字地震台网的几何布局 ,对区域上设定的不同震级和震源位置的可能事件 ,作了以下两点考虑。 (1)根据不同震级地震的监测范围 ,确定了相应的定位子台组合。 (2 )对同一地震事件 ,考虑到震相分析P震相和S震相测量精度上的差异 ,引入了不同的标准误差σP 和σS。在此基础上 ,通过模拟地震波理论走时和对走时矩阵的奇异值分解方法 ,计算了估计震源参数标准误差的参量空间协方差矩阵值 ,给出了标准误差理论值等值线图 ,用此方法讨论分析了江苏数字地震台网的地震定位能力。 相似文献
8.
9.
Wen Chen 《Corporate Social Responsibility and Environmental Management》2023,30(4):1664-1679
The coordinated development of digitization and greening is the internal demand for the comprehensive transformation and upgrading of enterprises worldwide. Based on data of China's A-share listed companies from 2012 to 2019, this article empirically confirms the stimulating effect of digital economy development on corporate low-carbon innovation. The mechanism tests show that the above stimulating effect is due to both the reduction effects of financing constraints and environmental uncertainty brought by the rapid development of the digital economy. In addition, this article discusses the value of corporate social responsibility (CSR) and finds that the promotion of CSR can significantly improve the policy effect of digital economy development in enabling corporate low-carbon innovation, especially for private listed enterprises in high-pollution industries. The findings of this article deepen our understanding of how to promote corporate low-carbon sustainable development in the digital era. 相似文献
10.
针对国电宁夏石嘴山发电有限公司一次调频响应缓慢、调频幅度与设定值偏差较大等问题,对产生原因进行分析,提出优化方案。结果表明:数字式电液控制系统(DigitalElectronic Hydraulic control system, DEH)一次调频存在滞后环节,严重影响调频速率及调频幅度,经过参数优化后,一次调频功能满足了电网调频要求。 相似文献