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Journal of Ancient Civilizations 1998年 13卷 93-110页

作者： antonyg.keen UniversityofLondon

Recent advances in connected and automated vehicles

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第2期6卷 109-131页

作者： David Elliott Walter keen Lei Miao Mahle Filter Systems North America Inc. Department of Engineering Technology Middle Tennessee State University

Connected and automated vehicle(CAV) is a transformative technology that has great potential to change our daily life. Therefore, CAV related research has been advanced significantly in recent years. This paper does a comprehensive review on five selected subjects that lie in the heart of CAV research:(i) inter-CAV communications;(ii) security of CAVs;(iii) intersection control for CAVs;(iv) collision-free navigation of CAVs; and(v)pedestrian detection and protection. It is believed that these topics are essential to ensure the success of CAVs and need to be better understood. For inter-CAV communications, this paper focuses on both Dedicated Short Range Communications(DSRC) and the future 5 G cellular technologies; for security of CAVs, this paper discusses both passive and active attacks and the existing solutions; for intersection control, this paper summarizes the pros and cons of both centralized and decentralized approaches; for collision avoidance, this paper concentrates on four subareas: maneuverability, vehicle networking, control confliction, and motorcycles; for pedestrian detection, this paper covers sensor, radar, and computer vision based approaches. Under each topic, this paper not only shows the stateof-the-art, but also unveils potential future research directions. By establishing connections among these subjects, this paper shows how they interact with each other and how they can be integrated into a seamless user experience. It is believed that the literature covered and conclusions drawn in this paper are very helpful to CAV researchers, application engineers, and policy makers.

关键词： Connected and automated vehicles Autonomous vehicles Intelligent transportation systems Driver-less cars

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中国丽江内陆降水背景值研究

中国环境科学 1993年第4期13卷 246-251页

作者：刘嘉麒 keen.,WC 昆明云南环境监测中心

平常作品非常心——献给小Kevin的NASCAR

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微型计算机 2005年第11期25卷 128-129页

作者： EricHansen keen

当笔者第一眼看到这个名为“NASCAR的MOD作品时，并没有太多的兴致。毕竟《微型计算机》M0D专区自开办以来已经介绍过国外和国内不少类似的汽车模型MOD作品，我想读者也不太愿意花时间来看大致重复的内容。但当笔者读完制作者写的E-mai... 详细信息

当笔者第一眼看到这个名为“NASCAR的MOD作品时，并没有太多的兴致。毕竟《微型计算机》M0D专区自开办以来已经介绍过国外和国内不少类似的汽车模型MOD作品，我想读者也不太愿意花时间来看大致重复的内容。但当笔者读完制作者写的E-mail之后,我才知道在这样一个貌似普通的作品之后还有一个感人的故事。这让笔者感到MOD不再是一种冷冰冰的技术，其中更包含了一个Modder在YY作品外的个人魅力与人格。

关键词：作品《微型计算机》 E-mail MOD 汽车模型个人魅力制作者

An Blind Demodulation Method for OFDM Systems

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An Blind Demodulation Method for OFDM Systems

2003年通信理论与信号处理年会

作者： Zhou keen China Academy of Engineering Physic

＜正＞ Holding great promise for high rate transmissions,high bandwidth efficiency and high frequency spectrum efficiency, Orthogonal Frequency Division Multiplexing（OFDM） has been and is being considered by many application in wireless bandwidth communication system. In order to increase transmitting efficiency of OFDM system, the blind demodulation method become a hot research dot.

关键词： blind demodulation algorithm OFDM system unknown wireless channel

来源： cnki会议评论

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Julia集

数学译林 1989年第4期8卷 289-299,356页

作者： keen,L 蔡克聚

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回忆伦敦爆炸案

疯狂英语（初中天地） 2005年第9期 44-45页

作者： Judy keen 安迪

2005年7月7日早上,伦敦受到一连串致命的爆炸袭击,爆炸震响了地铁,炸飞了一辆拥挤的双层公交车,还导致早上交通高峰期一片混乱。有50人已被确认死亡,超过700人在袭击中受伤。一天前,伦敦赢得了2012年夏季奥运会的主办权,那将会是自1948... 详细信息

2005年7月7日早上,伦敦受到一连串致命的爆炸袭击,爆炸震响了地铁,炸飞了一辆拥挤的双层公交车,还导致早上交通高峰期一片混乱。有50人已被确认死亡,超过700人在袭击中受伤。一天前,伦敦赢得了2012年夏季奥运会的主办权,那将会是自1948年来伦敦举办的首届奥运会。

关键词：爆炸案

Nonalcoholic Fatty Liver Disease:Changes in Gut Microbiota and Blood Lipids

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Journal of Clinical and Translational Hepatology 2024年第4期12卷 333-345页

作者： keen Yang Jieying Zeng Huaiyu Wu Huiyu Liu Zhimin Ding Weiyu Liang Linghu Wu Ziwei Lin Wenhui Huang Jinfeng Xu Fajin Dong Department of Ultrasound Shenzhen People’s Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSouthern University of Science and Technology)ShenzhenGuangdongChina

Background and Aims:The global prevalence of nonalcoholic fatty liver disease(NAFLD)is 25%.This study aimed to explore differences in the gut microbial community and blood lipids between normal livers and those affected by NAFLD using 16S ribosomal deoxyribonucleic acid ***:Gut microbiome profiles of 40 NAFLD and 20 non-NAFLD controls were *** about four blood lipids and 13 other clinical features was *** were divided into three groups by ultrasound and FibroScan,those with a normal liver,mild FL(FL1),and moderate-to-severe FL(FL2).FL1 and FL2 patients were divided into two groups,those with either hyperlipidemia or non-hyperlipidemia based on their blood *** keystone species within the groups were identified using univariate analysis and a specificity–occupancy *** difference in biochemical parameters ion NAFLD patients and healthy individuals were identified by detrended correspondence analysis and canonical correspondence ***:Decreased gut bacterial diversity was found in patients with ***/Bacteroidetes decreased as NAFLD *** and Ruminococcus 2 were the most representative fatty-related *** pyruvic transaminase,aspartate aminotransferase,and white blood cell count were selected as the most significant biochemical *** of areas under the curve identified two microbiomes combined with the three biochemical indexes that identified normal liver and FL2 very well but performed poorly in diagnosing ***:Faecalibacterium and Ruminococcus 2,combined with glutamate pyruvic transaminase,aspartate aminotransferase,and white blood cell count distinguished *** speculate that regulating the health of gut microbiota may release NAFLD,in addition to providing new targets for clinicians to treat NAFLD.

关键词： Liver Gut microbiota Blood lipids Nonalcoholic fatty liver disease Hyperlipidemia

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决策支持系统的未来十年(续)

计算机科学 1990年第5期17卷 49-54页

作者： Peter G.W. keen 颜永珙

3.D、S和S之间的权衡应当再次强调,照Stabell的话,这就是:现在到了还原D在DSS中地位的时候了。当然,这并非意味着扩展支持可以忽视计算机技术,即第二个S。而仅仅是,它突出了主宰DSS的困境,而且这种困境可能是导致定义问题的根本原因。 ... 详细信息

3.D、S和S之间的权衡应当再次强调,照Stabell的话,这就是:现在到了还原D在DSS中地位的时候了。当然,这并非意味着扩展支持可以忽视计算机技术,即第二个S。而仅仅是,它突出了主宰DSS的困境,而且这种困境可能是导致定义问题的根本原因。 DSS将三个十分不同的努力重点。

关键词：决策支持系统自动化系统

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决策支持系统的未来十年

计算机科学 1990年第4期17卷 48-53页

作者： Peter G.W.keen 颜永珙

决策支持领域已有十多年的历史了。过去十年中,信息技术的成本和特征已发生了巨大变化。以计算机为基础的工具已遍布整个办公室环境。决策支持在1976年还只代表一种运用信息系统和分析工具的基本概念,而如今,它已成为信息系统主流的一... 详细信息

决策支持领域已有十多年的历史了。过去十年中,信息技术的成本和特征已发生了巨大变化。以计算机为基础的工具已遍布整个办公室环境。决策支持在1976年还只代表一种运用信息系统和分析工具的基本概念,而如今,它已成为信息系统主流的一部分了。本文从DSS领域的研究和实践两方面,回顾其现状并展望其未来十年。重点放在四个主要问题上: (1) 新在何处?既然DSS的许多原理为计算(机)端点用户所共知,它的思想是否已过时? (2) 何谓DSS的定义?在持续了十多年研究和实践后的今天,DSS仍没有确切的定义,这难道无关紧要? (3) 从充分利用DSS机会所需的知识基础和努力方向出发,在决策、支持和系统之间应进行何种权衡? (4) 未来十年为不亚于过去十年或取得更多的进展,主要的问题是什么?

关键词：决策支持系统自动化系统