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Outage Performance and Optimal Design of MIMO-NOMA Enhanced Small Cell Networks with Imperfect Channel-State Information

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China Communications 2021年第10期18卷 107-128页

作者： Zheng Shi Hong Wang Yaru Fu guanghua yang Shaodan Ma Xinrong Ye School of Intelligent Systems Science and Engineering Jinan UniversityZhuhai 519070China State Key Laboratory of Internet of Things for Smart City and the Department of Electrical and Computer Engineering University of MacaoMacao 999078China School of Communication and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China School of Science and Technology Hong Kong Metropolitan UniversityHong Kong SARChina School of Physics and Electronic Information Anhui Normal UniversityWuhu 241002China

This paper focuses on boosting the performance of small cell networks(SCNs)by integrating multiple-input multiple-output(MIMO)and nonorthogonal multiple access(NOMA)in consideration of imperfect channel-state information(CSI).The estimation error and the spatial randomness of base stations(BSs)are characterized by using Kronecker model and Poisson point process(PPP),*** outage probabilities of MIMO-NOMA enhanced SCNs are first derived in closed-form by taking into account two grouping policies,including random grouping and distance-based *** is revealed that the average outage probabilities are irrelevant to the intensity of BSs in the interference-limited regime,while the outage performance deteriorates if the intensity is sufficiently ***,as the channel uncertainty lessens,the asymptotic analyses manifest that the target rates must be restricted up to a bound to achieve an arbitrarily low outage probability in the absence of the inter-cell ***,highly correlated estimation error ameliorates the outage performance under a low quality of CSI,otherwise it behaves ***,the goodput is maximized by choosing appropriate precoding matrix,receiver filters and transmission *** the end,the numerical results verify our analysis and corroborate the superiority of our proposed algorithm.

关键词： imperfect channel-state information(CSI) multiple-input multiple-output(MIMO) non-orthogonal multiple access(NOMA) small cell networks(SCNs)

Optimal design of anchor cables for slope reinforcement based on stress and displacement fields

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Journal of Rock Mechanics and Geotechnical Engineering 2015年第4期7卷 411-420页

作者： guanghua yang Zhihui Zhong Yucheng Zhang Xudong Fu School of Civil and Architectural Engineering Wuhan University Guangdong Research Institute of Water Resources and Hydropower Geotechnical Engineering Technology Center of Guangdong Province Emergency Technology Research Center of Guangdong Province for Public Events

How to determine reasonable position and length of anchor cable is a frequently encountered but not well addressed problem in slope reinforcement projects. In this paper, the variable-modulus elastoplastic strength reduction method （SRM） is used to obtain the stress field, displacement field, and factor of safety of slope. Slope reinforcement using anchor cables is modeled by surface loading, i.e. different distributions of surface loading represent various reinforcement schemes. Optimal reinforcement scheme of anchor cables can be determined based on slope stress and displacement fields. By comparing the factor of safety and stress field before and after slope reinforcement, it is found that better rein-forcement results can be achieved if strong reinforcement is applied upon the regions with high stress and large displacement. This method can well optimize the arrangement of anchor cables. In addition, several cases are employed to verify the proposed method.

关键词： Slope Stress levelDisplacement fieldOptimal arrangementVariable-modulus elastoplastic model

Research on Electric Field Confinement Effect in Silicon LED Fabricated by Standard CMOS Technology

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Semiconductor Photonics and Technology 2010年第2期16卷 84-87,92页

作者： yang guanghua WANG Wei Electronic and Information School Tianjin UniversityTianjin 300072 CHN Information and Communication Inst. Tianjin Polytechnic University Tianjin 300160 CHN Institute of Semiconductors of Chinese Academy of Sciences Beijing 100083 CHN

The wedge-shaped and leaf-type silicon light-emitting devices(LED)are designed and fabricated with the Singapore Chartered Semi Inc.'s dual-gate standard 0.35μm CMOS *** basic structure of the two devices is N well-P+ junction.P+ area is the wedge-shaped structure,which is embedded in N *** leaf-type silicon LED device is a combination of the three wedge-shaped LED *** main difference between the two devices is their different electrode distribution,which is mainly in order to analyze the application of electric field confinement(EFC).The devices' micrographs were measured with the Olympus IC test *** forward and reverse bias electrical characteristics of the devices were *** measurements of the devices show that the electrode layout is very important when the electric field confinement is applied.

关键词： silicon LED standard CMOS technology electric field confinement effect

维普期刊数据库评论

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维普期刊数据库

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地基沉降计算的新方法

岩石力学与工程学报 2008年第4期27卷 679-686页

作者：杨光华广东省水利水电科学研究院广东广州510610

根据原位土压板试验的P-S曲线来建立沉降计算的新方法。在假设压板试验P-S曲线为双曲线方程时,建立双曲线模型方法,同时通过双曲线求得土体的切线和割线模量,把所求得的模量用于分层总和法进行基础的沉降计算,建立原位土的双曲线切线和... 详细信息

根据原位土压板试验的P-S曲线来建立沉降计算的新方法。在假设压板试验P-S曲线为双曲线方程时,建立双曲线模型方法,同时通过双曲线求得土体的切线和割线模量,把所求得的模量用于分层总和法进行基础的沉降计算,建立原位土的双曲线切线和割线模量法。在假设压板试验P-S曲线为双曲线方程时,所需要参数只是土体的初始切线模量Es0、土体内摩擦角及黏聚力c。对压板试验P-S曲线为其他任意曲线时,建立土体切线模量与荷载水平的关系,用于分层总和法进行基础的沉降计算,建立一般曲线的切线模量法。由于切线或割线模量是随着荷载水平的不同而呈现非线性特点的,新的计算方法可以计算接近地基极限承载力时的沉降,由此形成以原位土切线和割线模量法的地基非线性沉降全过程计算新方法。由于这样确定的土体变形参数能较好地考虑地基土的原状性和非线性性,因而可以较准确地计算基础的非线性沉降过程,同时该方法所需土体参数较少。将该方法分别应用于桩基、筏基以及复杂的路堤地基和复合地基的沉降计算,通过实际工程的检验,验证该方法的实用性和有效性,这可能是地基沉降计算的一个重大进展。

关键词：土力学地基沉降沉降计算方法原位土非线性沉降

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关于压板载荷试验确定地基承载力问题的讨论

岩土工程学报 2023年第7期45卷 1540-1542页

作者：杨光华广东省水利水电科学研究院广东广州510610 广东省岩土工程技术研究中心广东广州510610

地基承载力应由实际基础下地基的强度和变形双控确定。直接由压板载荷试验确定地基承载力可以保证强度安全,不能保证变形安全。要实现变形控制设计,地基承载力应该由设计师取定更合理,设计师可以从压板试验获取土的变形与强度参数,用于... 详细信息

地基承载力应由实际基础下地基的强度和变形双控确定。直接由压板载荷试验确定地基承载力可以保证强度安全,不能保证变形安全。要实现变形控制设计,地基承载力应该由设计师取定更合理,设计师可以从压板试验获取土的变形与强度参数,用于计算实际基础的荷载沉降p-s曲线,由p-s曲线按强度和变形双控确定合理的地基承载力。

关键词：地基承载力压板载荷试验变形控制切线模量法

An affective chatbot with controlled specific emotion expression

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Science China(Information Sciences) 2022年第10期65卷 122-139页

作者： Chenglin JIANG Chunhong ZHANG yang JI Zheng HU Zhiqiang ZHAN guanghua yang State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications School of Intelligent Systems Science and Engineering Jinan University

Endowing a chatbot with the capability of specific emotion expression will significantly improve both chatbot's usability and users' satisfaction. Recently, many studies on open-domain neural emotional,conversational models(chatbots) have been conducted. However, enabling a chatbot to control what kind of emotion to respond to in conversation explicitly is still under exploration. This paper proposes a novel affective chatbot based on the sequence-to-sequence framework, responding with appropriate emotion like a human. In particular, a new module called single emotion generator is designed in the new chatbot model to address the existing issue of controlling over reacting emotion. It enables the chatbot to select the appropriate emotion for a response when interacting with users. In the decoder, an affective lexiconbased method generates emotion-awareness responses based on the specific emotion controlled by the single emotion generator. The proposed chatbot outperforms mainstream baseline algorithms for both semantic fluency and emotion consistence metrics through experimental evaluation. The experimental results also demonstrate that the new chatbot obtains the ability to control the emotion for response explicitly and responds emotionally with the specific emotion.

关键词： natural language generation emotional chatbot sequence-to-sequence emotion distribution emotion analysis

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Some Fundamental Aspects of Residuum Catalytic Cracking

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石油学报（石油加工） 1997年第S1期13卷 14-18页

作者： yang guanghua, Xu Chuming, Lin Shixiong ( National Heavy Oil Research Laboratory,University of Petroleum, Beijing 102200)

ＳｏｍｅＦｕｎｄａｍｅｎｔａｌＡｓｐｅｃｔｓｏｆＲｅｓｉｄｕｕｍＣａｔａｌｙｔｉｃＣｒａｃｋｉｎｇＹａｎｇＧｕａｎｇｈｕａ，ＸｕＣｈｕｍｉｎｇ，ＬｉｎＳｈｉｘｉｏｎｇ（ＮａｔｉｏｎａｌＨｅａｖｙＯｉｌＲｅｓｅａｒｃｈ... 详细信息

ＳｏｍｅＦｕｎｄａｍｅｎｔａｌＡｓｐｅｃｔｓｏｆＲｅｓｉｄｕｕｍＣａｔａｌｙｔｉｃＣｒａｃｋｉｎｇＹａｎｇＧｕａｎｇｈｕａ，ＸｕＣｈｕｍｉｎｇ，ＬｉｎＳｈｉｘｉｏｎｇ（ＮａｔｉｏｎａｌＨｅａｖｙＯｉｌＲｅｓｅａｒｃｈＬａｂｏｒａｔｏｒｙ，Ｕｎｉｖｅｒ...

关键词： residue oil catalytic cracking riser reaction path

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两晋南北朝涪陵郡置废、州属、领县杂考

中国历史地理论丛 2006年第3期21卷 128-135页

作者：杨光华西南大学历史地理研究所重庆北碚400715

古今沿革地理著述中,对两晋南北朝时期涪陵郡的置废、州属、领县等情况的记述,多有不实之处。实际情况是,西晋后期涪陵郡已由梁州还属益州,至南齐时仍属益州。涪陵郡在成汉前期仍由晋朝控制,在成汉后期成为争战之地,建置难以持久,最后... 详细信息

古今沿革地理著述中,对两晋南北朝时期涪陵郡的置废、州属、领县等情况的记述,多有不实之处。实际情况是,西晋后期涪陵郡已由梁州还属益州,至南齐时仍属益州。涪陵郡在成汉前期仍由晋朝控制,在成汉后期成为争战之地,建置难以持久,最后被少数民族首领控制。东晋平定成汉后,在巴郡枳县设涪陵郡,属于侨郡,但不久恢复了实郡,以后各朝仍置涪陵郡。晋、宋涪陵郡的领县数目难以确认,但涪陵县及其以北的汉葭、汉平县当为其辖县。梁朝时,当地少数民族又脱离朝廷控制,梁至北周涪陵郡仅领汉平一县。涪陵郡曾寄治于巴郡枳县,但枳县始终都属于巴郡,而不曾为涪陵郡属县。

关键词：两晋南北朝涪陵郡建置沿革

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廪君巴人发源地“武落钟离山”地名新解

中国历史地理论丛 2010年第4期25卷 133-140页

作者：杨光华西南大学历史文化学院历史地理研究所重庆400715

古代文献记载廪君巴人发源于"武落钟离山"。当代学者对"武落钟离山"这个历史地名的解释差异比较大,有的认为它是"武落山"、"钟离山"二山的合称,有的认为它的本名是"落钟山",有的认为它在湖北清江流域,有的认为它在重庆大宁河流域。实际... 详细信息

古代文献记载廪君巴人发源于"武落钟离山"。当代学者对"武落钟离山"这个历史地名的解释差异比较大,有的认为它是"武落山"、"钟离山"二山的合称,有的认为它的本名是"落钟山",有的认为它在湖北清江流域,有的认为它在重庆大宁河流域。实际上,"武落钟离山"本名"武陵钟离山","武落"为"武陵"传写之误,"武陵"即武陵郡。"武陵钟离山"去掉郡名"武陵",就叫做"钟离山"。这表明廪君巴人的发源地是在清江(夷水)流域而非大宁河流域。

关键词：廪君巴人发源地武落钟离山武陵钟离山