Results 41 to 50 of about 137,651 (153)

Compliance in Regulatory Gray Areas: The Case of the Organic Seed Standard

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Adaptive regulations, designed to balance flexibility with accountability, can embed provisions that unintentionally leave room for firms to shirk on their responsibilities by exploiting flexibility. We call these provisions “regulatory gray areas,” and ask: how should we understand (non‐)compliance in adaptive regulatory settings?
Liza Wood   +3 more
wiley   +1 more source

氢/空气预混平面火焰CARS温度测量

open access: yes, 2000
介绍了一套用于燃烧研究中对温度和成分浓度测量进行校准的氢/空气预混平面火焰燃烧4系统。采用氮CARS技术对氢/空气预混平面火焰温度进行了系统的测量,包括不同当量比条件下的温度分布,温度的纵向和横向空间分布。结果表明,氮CARS测温与氢/空气预混平面火焰的理论计算温度之间的误差为3.4%,而在燃烧炉表面上方1mm以上的空间属于火焰的温度均匀区,温度的不均匀性约为1.8%
赵建荣, 俞刚, 杨仕润, 韩百
core   +2 more sources

走进地震预测——加卸载响应比方法

open access: yes, 2011
概括介绍了加卸载响应比的基本思路、基本概念、物理基础、加卸载响应比在地震预测中的应用以及取得的一些成果.加卸载响应比方法物理基础扎实,只需利用地球内部的某些实测数据 ...
袁帅, 梁乃刚, 刘月, 尹祥础
core   +2 more sources

Infrastructure as Inherited Knowledge: Artificial Intelligence and the Governance of Long‐Life Infrastructure

open access: yesJournal of Critical Infrastructure Policy, Volume 8, Issue 1, Spring/Summer 2027.
ABSTRACT Epistemic orphaning, responsibility drift, loss of institutional memory, and non‐stationarity are not new problems in infrastructure governance—they have accompanied long‐life infrastructure throughout its history. What artificial intelligence changes is not the existence of these problems but their scale, opacity, and the structural ...
Priscilla P. Nelson
wiley   +1 more source

From Indicator to Prediction: Five Decades of Biochemical Oxygen Demand Research in Tropical Freshwaters

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci   +5 more
wiley   +1 more source

Fast intra-prediction algorithm in H. 264(H. 264快速帧内预测算法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2006
在新制定的H. 264视频编解码标准中,帧内预测是一项重要的技术.它利用周围像素预测当前块来降低空间冗余,能极大地提高H. 264的编码效率.然而,帧内预测的4×4及16×16预测分别有9种和4种模式.为选出最佳模式,全搜索算法需要花费极大的计算量.为了降低帧内预测的复杂度,提出了一种快速帧内预测算法.该算法针对全I帧编码,充分利用了时域、空域及不同块大小间的相关性来预测当前块的最佳模式,并结合提前中止算法来减少不必要的模式选择计算.实验结果表明:与全搜索相比,文中提出的算法能减少50%〜75 ...
YANGLi-bo(杨黎波)   +2 more
doaj   +1 more source

Epistemic Capabilities of Artificial Intelligence for Public Administration and Policy Research: A Framework for Scholarship in the Age of Intelligent Machines

open access: yesPolicy Studies Journal, Volume 54, Issue 4, November 2026.
ABSTRACT Artificial intelligence (AI) has gained much interest in public administration and public policy fields in recent years. Research on and that uses AI has so far treated it as an object or context within the broader administrative and governance discourse.
Yanto Chandra, Jianxiang Tan
wiley   +1 more source

基于地理信息元组的分类预测理论及应用——以中亚矿集区预测为例

open access: yes, 2007
地理信息科学的迅速发展为矿集区预测提供了新的理论依据,使地理信息理论、相应的技术方法组合及应用的整体研究成为可能。在大量理论和实验研究的基础上提出了基于地理信息元组的分类预测理论体系,该理论体系由六个概念、一个空间信息本质、两个空间信息特性以及六个空间信息相关方法和约定的构成。并在该理论体系基础上结合空间数据分析方法和探索式空间数据分析方法,建立了基于地理信息元组的分类预测模型。应用该模型在中亚区域实现了Au矿集区预测目标。为中亚成矿域中其它区域(如新疆 ...
张晓帆   +4 more
core  

基于大气环境质量及气象参数的绝缘子积污预测研究现状

open access: yesGaoya dianqi, 2017
及时全面掌握电网积污水平是预防电网污闪事故的基础,通过绝缘子积污预测获取污秽水平是适应电网智能化的发展方向,但目前绝缘子积污预测的理论基础不够完善,预测准确性欠缺。文中以上述问题为出发点,对绝缘子积污的外部影响因素进行了分析,对基于大气环境成分、基于气象参数预测绝缘子积污的方法及其准确度、适用性进行了总结。结果表明,大气环境成分、气象参数对绝缘子积污有显著影响;目前基于大气环境成分的绝缘子积污预测尚无法实现饱和污秽度的预测,基于气象参数的绝缘子积污预测尚不能满足工程要求;综合大气环境成分 ...
李特   +5 more
doaj  

Three‐Stage Fluid‐Assisted Dual‐Mode Janus E‐Skin for Thermally Comfortable Multiplexed SERS Sweat Analysis and Strain Monitoring

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Wearable sweat sensors face persistent trade‐offs between multiplexed detection, signal stability, and wearing comfort. Here, we present a Janus electronic skin (e‐skin) with dual‐mode functionality, offering both thermal and moisture comfort.
Zhi‐Mei Mu   +12 more
wiley   +1 more source

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