Results 31 to 40 of about 22,351 (166)

Accountability in Government Use of AI: Citizen Concerns and Preferences

open access: yesPublic Administration, EarlyView.
ABSTRACT Government adoption of AI opens the “pandora's box” of accountability, a core aspect of public value. Despite the centrality of governmental AI accountability, citizens' concerns and preferences in holding governments accountable for AI usage remain poorly understood.
Naikang Feng, Yanto Chandra
wiley   +1 more source

基于MATLAB语言的静电场模拟电荷法分析

open access: yesDianci bileiqi, 2005
模拟电荷法是一种应用于静电场数值计算的有效方法。笔者应用模拟电荷法对球一板电极电场进行了计算,并用MATLAB语言编制了计算软件。计算结果表明,模拟电荷法原理简单,方法应用简洁,适用于求解各类电极较为规则和介质类别不多的电场问题。在实际计算中,应用MATLAB语言编制计算软件,在计算速度、精度以及图形生成上更加具有快捷、方便的特点。
马向国, 顾文琪
doaj  

Theoritical investigations of phase stability, elastic and thermodynamic properties of γ’ phase in Co-X (X:Al, V) based superalloys [PDF]

open access: yes, 2016
Ni基高温合金是航空航天领域应用最广的高温材料。随着国防科技的发展,新一代的航空航天飞机对发动机涡轮叶片材料的承温能力提出更高的要求。然而Ni基高温合金受熔点的限制,其服役温度很难进一步提高。寻找下一代高温合金成为国内外研究机构的关注焦点。最近,研究者们陆续在Co-Al基和Co-V基合金中发现与Ni3Al类似的γ’析出强化相,由此掀起了新型钴基高温合金的研究热潮。作为新型Co基高温合金中的关键强化相,γ’相的结构稳定性和弹性性质直接决定了Co基高温合金的综合力学性能 ...
邓斌
core  

Land tenure contributions to protected area growth under alternative conservation targets in the Australian monsoon tropics

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract As the global protected area (PA) network expands to meet international targets, it is important to assess whether traditional reliance on public land will suffice for projected PA growth or whether other tenures, such as Indigenous or pastoral lands, may increasingly contribute.
Emmeline Norris   +2 more
wiley   +1 more source

Applicability and Structure Optimization of Cyclone Separator Based on Numerical Simulation [PDF]

open access: yes, 2015
旋风分离器是一种利用气-固两相流体的涡旋运动使固体颗粒在离心力的作用下从气流中分离出来的设备,它具有结构简单、操作维护简便、制造安装价格低等优点,被广泛应用于石油、化工、冶金等领域。由于其内部流场具有强旋流湍流特征,气流和颗粒的运动十分复杂,传统的实验方法很难深入研究其内部流场规律和分离机理,随着计算流体动力学的发展,数值仿真分析成为研究旋风分离器的主要手段。 旋风分离器的工况和结构参数会对其性能产生决定性影响。对于一个给定的旋风分离器,其工况参数包括颗粒半径、颗粒密度和入口速度 ...
吕智
core  

In Situ Fabrication of Sulfate‐Grafted Mo‐Doped NiOOH for Electrocatalytic Methanol Oxidation Coupled With Hydrogen Production at Industrial‐Level Current Density

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Developing efficient and sustainable energy conversion technologies is crucial for addressing the global energy and environmental challenges. As a promising clean energy conversion strategy, the electrocatalytic methanol oxidation coupled with cathodic hydrogen production provides a pivotal path to solve the above problems.
Tao Chen   +4 more
wiley   +1 more source

高压开关运动系统等效质量的计算

open access: yesGaoya dianqi, 1994
提出用“基本形块”分割法来计算形状复杂构件的转动惯量,这种方法易于写出通用算式,并便于用作图法简化计算.在速度比方面,介绍了作图解法和适于计算机使用的算式.
沈聿修
doaj  

Design and implementation of a college student performance analysis management system [PDF]

open access: yes, 2016
学生成绩管理是教学管理工作中的一项不可或缺的内容。有研究表明如果能够有效的对学生成绩进行管理,可以有针对性地提高我们将学业水平分为优秀学习能力、合理安排教学计划以及提高该校的整体竞争力,更有效为教学、老师、学生等领域服务。 本篇论文一开始分析系统需求,其次对成绩分析系统进行结构设计,模型设计,然后对系统进行总体和详细设计,最后通过代码实现整个系统。在对学生管理分析系统进行透彻的分析和合理的概括和归类中,能够发掘出巨大的、有意义的数据资讯。比如在同一门课程中,得出什么学院的同学成绩最优秀 ...
万通
core  

High Performance Catalyst Design by Artificial Intelligence for Acetylene Hydrochlorination

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT The rapid development of artificial intelligence (AI) has brought transformative contributions to society, revolutionizing various fields through its advanced computational capabilities and data‐driven approaches. In the field of materials science, AI has become a powerful tool that significantly accelerates the discovery of new materials by ...
Yuan Zhou   +12 more
wiley   +1 more source

Developments and Applications of Analytic Excited-State Energy Gradient and Hessian of TDDFT/MM [PDF]

open access: yes, 1900
近年来随着环境污染治理、清洁能源开发、生物信号检测以及光电分子器件设计等方面的研发及在现实生活中的广泛应用,人们对生物、化学及材料中的光化学和光物理过程表现出越来越浓厚的兴趣。实验方面,得益于飞秒瞬态吸收和发射光谱技术的使用,人们可以深入理解分子受光激发后光物理和光化学过程的微观机理。而另一方面,理论描述这些光物理和光化学过程则需要涉及众多复杂的激发态,这给当前使用的理论模型和计算方法提出了挑战,特别是当研究的体系增大,或者研究的体系处于复杂的环境中时,众多理论方法已丧失准确性 ...
曾樵
core  

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