Results 51 to 60 of about 93,069 (162)
, 2009 通过分析当前用户协作信息检索的相关理论和系统实践,总结其中存在的一些问题,确定用户同步协作检索中要解决的三个关键问题:检索任务的分配、群组查询历史的重用和协作感知,提出一个用户同步协作信息检索模型 ...
刘兰, 徐树维, 齐惠颖
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Rare Metals, EarlyView.ABSTRACT The Schottky barrier height (SBH), which serves as a pivotal determinant of charge carrier injection efficiency in electronic devices, critically governs electrical behavior at metal/semiconductor interfaces. However, pronounced metal‐induced gap states at metal contact interfaces induce Fermi‐level pinning, which constrains the ...
Xiaofei Liu +10 more
wiley +1 more source
Design and Implementation of Computer Proficiency Test Management System for Middle School Students [PDF]
, 2015 随着社会的进步和信息技术的发展，也随着高考的改革以及计算机技术课程在中学的普及，计算机水平测试对高考生来说显得越来越重要，常规纸质考试已经不适应当代计算机专业水平测试的要求。采用计算机技术、网络技术等现代化手段实现的在线考试系统是学校对计算机技术水平测试的发展方向。 一直以来学校的考试管理工作都是通过传统的纸质考试方式来测试学生掌握计算机知识的程度以及管理考试的相关事宜，这种管理方式有着很多不足之处，如：用时绵长、效率低下、统计容易出错，且容易集结大量数据，给查找、更新及维护带来了诸多不便 ...
周萍
core
Rare Metals, EarlyView.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Computer simulation to achieve low carbon buildings [PDF]
, 2012 本文介绍了整体式低碳建筑设计的方法，同时概述了计算机模拟技术和建筑物理工程师在实现建筑低碳节能设计中的重要作用。文章结合当前瑞士节能建筑实例，进一步阐述计算机模拟技术如何帮助建筑师优化设计方案以实现低碳节能，同时创造出舒适健康的人居环境。计算机模拟技术可以准确预测建筑设计方案的性能或量化不同设计方案的性能以提供最合理方案，其主要功能包括预测室内空气温度，表面积辐射温度，计算室内得热量，制冷采暖负荷，机械通风和自然通风情况 ...
Hou, Shan Shan +2 more
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Rare Metals, EarlyView.ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source
LP convergence for weighted sums of arrays with pairwise NQD sequences(两两NQD阵列加权和的LP收敛性)
Zhejiang Daxue xuebao. Lixue ban, 2016 研究了两两NQD阵列加权和的LP收敛性，在更弱的条件下得到与陈平炎相同的结论，改进和推广了前人的研究成果.
SONGMingzhu(宋明珠) +2 more
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2000 本文以依存语法作为语言模型的基础，首先提出了一种全新的句子分析策略：分析在两级上进行。一级是基于中心动词同其他成分间的约束关系，通过寻找汉语语义类之间可能存在的句法关系，实现句子成分过滤，完成句子主干提取。另一级是上下文级，将语法、语义和语境信息一体化，结合依存语法确定汉语句子中各成分间的依存关系。之后给出了一种快速有效的用于完成句子分析的松弛匹配迭代算法。通过实验表明了该分析策略和算法的可行性。
GUOYan-hua(郭艳华) +1 more
doaj +1 more source
Rare Metals, EarlyView.ABSTRACT The development of efficient and stable bifunctional catalysts remains a key challenge for green hydrogen production via electrochemical water splitting. In this study, a bimetallic Mo/Fe‐doped CoP2 nanoleaf array anchored on carbon cloth (Mo, Fe‐CoP2@CC) was synthesized from zeolitic imidazolate framework‐L (ZIF‐L) via an ion‐exchange and low‐
Xiangqun Zeng +6 more
wiley +1 more source