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The Research on Open Sharing of Higher Education Park Based on Intelligent Security System
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作者 Yan Dong 《Journal of Computer and Communications》 2024年第3期101-106,共6页
The intelligent security system is a series of systems that use modern information technology means such as artificial intelligence, cloud computing, big data, face recognition to carry out comprehensive monitoring, e... The intelligent security system is a series of systems that use modern information technology means such as artificial intelligence, cloud computing, big data, face recognition to carry out comprehensive monitoring, early warning, prevention and control, disposal, etc, for security protection. It is the development trend of security system in the future, and it is also the basis for open sharing between higher education parks and universities. By using content analysis, unstructured interviews and other research methods, this paper deeply studies the feasibility and basic ideas of the construction of intelligent security system in Shahe Higher Education Park, and forms basic experience and typical practices through the project construction, which further promotes the more intelligent, standardized and scientific safety management in colleges and universities. It really provides an important theoretical basis and practical guidance for the opening and sharing between higher education parks and universities. 展开更多
关键词 Intelligent Security system Higher Education Park open Sharing
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Einstein-Podolsky-Rosen Steering and Nonlocality in Open Quantum Systems
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作者 Abdelaziz Sabik 《Journal of Modern Physics》 2024年第4期462-473,共12页
We investigate the dynamical behavior of quantum steering (QS), Bell nonlocality, and entanglement in open quantum systems. We focus on a two-qubit system evolving within the framework of Kossakowski-type quantum dyna... We investigate the dynamical behavior of quantum steering (QS), Bell nonlocality, and entanglement in open quantum systems. We focus on a two-qubit system evolving within the framework of Kossakowski-type quantum dynamical semigroups. Our findings reveal that the measures of quantumness for the asymptotic states rely on the primary parameter of the quantum model. Furthermore, control over these measures can be achieved through a careful selection of these parameters. Our analysis encompasses various cases, including Bell states, Werner states, and Horodecki states, demonstrating that the asymptotic states can exhibit steering, entanglement, and Bell nonlocality. Additionally, we find that these three quantum measures of correlations can withstand the influence of the environment, maintaining their properties even over extended periods. 展开更多
关键词 Quantum Steering Dynamical Semigroups Bell Nonlocality open Quantum system Asymptotic Dynamics Entanglement
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HiLog:OpenHarmony的高性能日志系统
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作者 吴圣垚 王枫 +4 位作者 武延军 凌祥 屈晟 罗天悦 吴敬征 《软件学报》 EI CSCD 北大核心 2024年第4期2055-2075,共21页
日志是计算机系统中记录事件状态信息的的重要载体,日志系统负责计算机系统的日志生成、收集和输出.OpenHarmony是新兴的、面向全设备、全场景的开源操作系统.在所述工作之前,包括日志系统在内OpenHarmony有许多关键子系统尚未构建,而Op... 日志是计算机系统中记录事件状态信息的的重要载体,日志系统负责计算机系统的日志生成、收集和输出.OpenHarmony是新兴的、面向全设备、全场景的开源操作系统.在所述工作之前,包括日志系统在内OpenHarmony有许多关键子系统尚未构建,而OpenHarmony的开源特性使第三方开发者可以为其贡献核心代码.为了解决Open Harmony日志系统缺乏的问题,主要开展如下工作:(1)分析当今主流日志系统的技术架构和优缺点;(2)基于OpenHarmony操作系统的异构设备互联特性设计HiLog日志系统模型规范;(3)设计并实现第1个面向OpenHarmony的日志系统HiLog,并贡献到OpenHarmony主线;(4)对HiLog日志系统的关键指标进行测试和对比试验.实验数据表明,在基础性能方面,HiLog和Log的日志写入阶段吞吐量分别为1500 KB/s和700 KB/s,相比Android日志系统吞吐量提升114%;在日志持久化方面,HiLog可以3.5%的压缩率进行持久化,并且丢包率小于6‰,远低于Log.此外,HiLog还具备数据安全、流量控制等新型实用能力. 展开更多
关键词 操作系统 日志系统 开源软件 数据安全 流量控制
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基于Open L—System的植物生长模拟研究 被引量:1
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作者 姜明明 赵晓春 唐特 《中国农学通报》 CSCD 北大核心 2009年第16期284-287,共4页
简述了OpenL-系统的基本原理,并基于OpenL-系统对草本植物的形态进行了模拟。在模拟过程中,对植物的分枝结构,叶片的分别,生长方向进行控制,并根据植物生长过程中其形态特征与环境信息之间的动态交互过程,构建了环境模型,实现了植物与... 简述了OpenL-系统的基本原理,并基于OpenL-系统对草本植物的形态进行了模拟。在模拟过程中,对植物的分枝结构,叶片的分别,生长方向进行控制,并根据植物生长过程中其形态特征与环境信息之间的动态交互过程,构建了环境模型,实现了植物与环境并发过程的模拟研究并模拟了部分环境因素对植物生长过程形态结构的影响。 展开更多
关键词 虚拟植物 open L—system 植物模型 环境交互模型
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Realization Methodology of a 5-axis Spline Interpolator in an Open CNC System 被引量:10
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作者 Wang Yongzhang Ma Xiongbo Chen Liangji Han Zhenyu 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2007年第4期362-369,共8页
By making use of the advantages of non-uniform rational B-spline (NURBS) curves to represent spatial curves, an instruction format with double NURBS curves suitable for 5-axis coordinated real-time interpolation is ... By making use of the advantages of non-uniform rational B-spline (NURBS) curves to represent spatial curves, an instruction format with double NURBS curves suitable for 5-axis coordinated real-time interpolation is presented to replace the current 5-axis coordinated linear interpolation method defective in low-speed, low-accuracy and enormous numerical control (NC) files in sculptured surface machining. A generation procedure of the NC files with the presented format is introduced and the method to realize the interpolation in an open computer numerical control (CNC) system is developed by ourselves. These illustrated the feasibility of the proposed method and its capability of avoiding all the shortages of 5-axis linear interpolation method. 展开更多
关键词 open CNC system sculptured surface 5-axis machining NURBS INTERPOLATION
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Research on new type of fast-opening mechanism in steam turbine regulating system and optimization of operation tactic 被引量:2
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作者 Xiao-xiao LI Xuan-yin WANG Fu-shang LI 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2008年第5期633-639,共7页
With the analysis on regulating system in 200 MW steam turbine, the necessity of appending the fast-opening function to the original system is set forth and a new type of fast-opening mechanism is devised. The mathema... With the analysis on regulating system in 200 MW steam turbine, the necessity of appending the fast-opening function to the original system is set forth and a new type of fast-opening mechanism is devised. The mathematical model of system is built up. With the use of AMESIM software, the displacement curve of the piston, the force curve of the cartridge valve spool, the pressure curve and the flux curve in the regulation process are obtained based on simulation. The performances of three fast-opening systems composed of cartridge valves with different diameters are compared. Based on the analysis on factors that affect the execution time of fast-opening, the dead zone of the fast-opening system is put forward. To overcome the defect, dif- ferent operation modes are adopted for different zones. The result shows that with the increase of the valve diameter, the regulating time in the dead zone significantly exceeds the fast-opening time in the whole journey. Accordingly, the optimization operation tactic in the dead zone and the qualification conditions are brought forward. The fast-opening system composed of 32 mm cartridge valves is taken as an example with use of the tactic. The simulation result shows that the maximum regulating time is shortened by 509 ms. 展开更多
关键词 蒸汽涡轮机 调节系统 传动装置 技术性能
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Open-Type Ferry Safety System Design for Using LNG Fuel 被引量:2
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作者 D. N. Pagonis G. Livanos G. Theotokatos 《Journal of Marine Science and Application》 CSCD 2016年第4期405-425,共21页
在这可行性研究,我们调查使用在一条开的类型 Ro-Ro 旅客渡船和联系潜力的燃料关于容器安全系统质问的液化天然气(LNG ) 的生存能力。我们为变换存在轮船在 LNG 燃料上跑推荐适当方法论,讨论所有必要修正到轮船安全系统,并且也评估... 在这可行性研究,我们调查使用在一条开的类型 Ro-Ro 旅客渡船和联系潜力的燃料关于容器安全系统质问的液化天然气(LNG ) 的生存能力。我们为变换存在轮船在 LNG 燃料上跑推荐适当方法论,讨论所有必要修正到轮船安全系统,并且也评估相关轮船撤退过程。我们构画出轮船已经为必须为 LNG 的使用被考虑的另外的限制造成的每个安全系统和分析与应允的基本要求。适当行动被推荐。而且,我们执行危险鉴定研究。总的来说,我们清楚地表明调查情形的技术可行性。到轮船安全系统的最小的修正被要求为轮船的这种特定的类型遵循存在安全规则。 展开更多
关键词 LNG 燃料 燃料变换 装运安全系统 LNG 规定 开类型的渡船 设计学习
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LXI instrument development platform based on an open embedded operating system 被引量:4
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作者 Yu Wilson 《仪器仪表学报》 EI CAS CSCD 北大核心 2007年第5期788-791,共4页
This paper introduces the architecture and components of LXI instrument development platform based on an open embedded operating system,which is a modular and configurable platform.The platform is a total solution to ... This paper introduces the architecture and components of LXI instrument development platform based on an open embedded operating system,which is a modular and configurable platform.The platform is a total solution to develop LXI instrument modules and systems.On the other hand,it also supports other types of instrument development.This is a generic and efficient platform.At the end,this paper addresses the technical tends, challenges,and recormnends solutions. 展开更多
关键词 开放式嵌入操作系统 仪器扩展 LXI 技术 对策 LAN接口
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An Introductory Embedded Systems Teaching Using Open-Source Hardware and Software Platforms
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作者 Peter Yakimov 《通讯和计算机(中英文版)》 2016年第1期11-18,共8页
关键词 嵌入式系统 软件平台 开放源码 硬件 教学 软件集成开发环境 可编程设备 个人数字助理
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Web Development of Spatial Content Management System through the Use of Free and Open-Source Technologies. Case Study in Rural Areas 被引量:2
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作者 Ioannis Pispidikis Efi Dimopoulou 《Journal of Geographic Information System》 2015年第5期527-540,共14页
The rapid development of the technology of the web systems and GIS, in conjunction with the world economic crisis, formed the content for the promotion and development of free systems and open-source technologies. At ... The rapid development of the technology of the web systems and GIS, in conjunction with the world economic crisis, formed the content for the promotion and development of free systems and open-source technologies. At the same time, the tendency toward the standardization of data, metadata and services, with the aim of creating common “Language” for the reading and the dissemination of information available, is a basic research area in the global scientific community in this field. The development of WebGIS systems, taking advantage of the free technology, also contributes to finding more economical solutions, where the use of such systems is more directly accessible. The aim of this research work is, through the analysis of technologies for the Internet, and also the architecture of the WebGIS systems, to investigate the possibilities and to develop the appropriate free technologies, so as to design and implement a spatial content management system for the web. Search with the use of the latter, is the best response to the needs and visualization application maps, with scope in rural areas. In addition, reference is made to the existing content management systems, which provide both processing spatial data, and easily create a WebGIS application. 展开更多
关键词 WEBGIS open SOURCE TECHNOLOGIES Free systems
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Preparation of Hadamard Gate for Open Quantum Systems by the Lyapunov Control Method 被引量:2
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作者 Nourallah Ghaeminezhad Shuang Cong 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2018年第3期733-740,共8页
In this paper, the control laws based on the Lyapunov stability theorem are designed for a two-level open quantum system to prepare the Hadamard gate, which is an important basic gate for the quantum computers. First,... In this paper, the control laws based on the Lyapunov stability theorem are designed for a two-level open quantum system to prepare the Hadamard gate, which is an important basic gate for the quantum computers. First, the density matrix interested in quantum system is transferred to vector formation.Then, in order to obtain a controller with higher accuracy and faster convergence rate, a Lyapunov function based on the matrix logarithm function is designed. After that, a procedure for the controller design is derived based on the Lyapunov stability theorem. Finally, the numerical simulation experiments for an amplitude damping Markovian open quantum system are performed to prepare the desired quantum gate. The simulation results show that the preparation of Hadamard gate based on the proposed control laws can achieve the fidelity up to 0.9985 for the different coupling strengths. 展开更多
关键词 Lyapunov control method open quantum system operator preparation quantum Hadamard gate vector space dynamics
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Study of Internet-based Open Remote Diagnostic System
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作者 XU Xue-qi, WANG Tai-yong, LI Guo-wei, WU Jian-gang (School of Mechanical Engineering, Tianjin University, Tianjin 300072, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期272-,共1页
With the wide application of information technologi es , Internet-based remote diagnosis (IRD) of plant will surely become the main se rvice mode of corporations in the future. Therefore, it has received a great dea l... With the wide application of information technologi es , Internet-based remote diagnosis (IRD) of plant will surely become the main se rvice mode of corporations in the future. Therefore, it has received a great dea l recognition from academia and the industry. The IRD technology, which is based upon database, computer, and network technologies is the focus of correlative r esearch all over the world. Although some scientific institutions have developed primary IRD systems, their functions are quite narrow with many shortcomings. I n short, the standard of remote diagnosis has not been created, in particula r the network manufacture and diagnostic resources cannot be shared extensiv ely, so the systemic open character has not been developed enough to create the efficiency and the scope of the existing remote diagnostic systems. Aimed at improving the limitations mentioned above, in this paper we try to develop Web -CORBA open remote diagnosis architecture over the Internet, which is based on the existing troubleshooting software. We have designed and realized the general -purpose data interface of the software and some Java applets functional module s. Thereby the software’s open character and application field get widened. Our current research is focused on building the remote intelligent diagnosis center on the basis of the Web-CORBA architecture. Some basic functions have been app lied. Further, we put forward the project of combining the enterprise interior d iagnostic system to the remote diagnosis center, and make a study of building th e remote diagnosis object network architecture. The open remote diagnostic syste m based on Internet offers many advantages. Also, with the CORBA distributed obj ect technology, the distributed diagnostic resources can be connected as a coope rative diagnosis object system, in order that all the resources can be shared to the full extent, and the advanced diagnostic technique can be applied as soon a s possible. This is the inevitable trend of the diagnostic technology. 展开更多
关键词 remote diagnosis CORBA JAVA open system
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Research on Open Block's Pedestrian System Based on the EnvironmentBehavior Theory: A Case Study of Shenzhen Oct-loft 被引量:1
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作者 LIN Jingwei ZHANG Yinan 《Journal of Landscape Research》 2017年第4期17-21,28,共6页
In the context of banning gated communities, blocks returning to the human-oriented scale become the new normal, and pedestrian system design will be paid more attention in the urban planning field. Oct-Loft Creative ... In the context of banning gated communities, blocks returning to the human-oriented scale become the new normal, and pedestrian system design will be paid more attention in the urban planning field. Oct-Loft Creative Park is a template for open blocks in Shenzhen, with a convenient and humanized pedestrian system. This paper selects the creative park's pedestrian system as the research object, using the environment-behavior theory for analysis. Finally, optimization strategies of pedestrian system will be put forward. 展开更多
关键词 SHENZHEN OCT-Loft open blocks Pedestrian system Environment-behavior
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Construction of Dry Cover System for Prevention of Acid Mine Drainage at Mine Waste Dump in Open Cast Coal Mines, Indonesia
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作者 Shinji Matsumoto Hideki Shimada +2 位作者 Takashi Sasaoka Ginting J. Kusuma Rudy S. Gautama 《Journal of Environmental Protection》 2016年第2期160-169,共10页
Acid Mine Drainage (AMD) which occurs when sulfide minerals are exposed to water and oxygen with an excavation is one of the serious environmental problems in the world. A dry cover system is generally constructed in ... Acid Mine Drainage (AMD) which occurs when sulfide minerals are exposed to water and oxygen with an excavation is one of the serious environmental problems in the world. A dry cover system is generally constructed in waste dump for the prevention of AMD in Indonesia by virtue of low cost and availability of waste rocks for a cover layer. However, the failure of the system caused by the lack of information related to the construction of cover system in mines, which leads to AMD, has been reported recently in Indonesia. In this study, the field investigation was conducted in pit and waste dump in open cast coal mine in Indonesia with the aim of obtaining the information on the construction of a cover layer and backfilling conditions of waste rocks in the waste dump. The rock samples taken in two areas of the mine were analyzed by geochemical analysis and sequential extraction with acids. The results indicated that Net Acid Producing Potential (NAPP) of the rocks in the waste dump down to 100 cm depth in both areas was from 10 to 30 kg H<sub>2</sub>SO<sub>4</sub>/ton, suggesting that Potentially Acid Forming (PAF) was backfilled in a cover layer. The backfill of PAF was contrary to the concept of cover system, which caused the failure of constructing a cover layer. The cause of the failure was likely attributed to the shortage of cover rocks which are classified as Non Acid Forming (NAF) or the failure of proper placement of them by an operational problem in the areas. Moreover, the results of the extraction with acids suggested that the form of iron and sulfur has to be taken into account to discuss the occurrence of AMD. 展开更多
关键词 Acid Mine Drainage (AMD) Dry Cover system open Cast Coal Mine Indonesia
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Effects of relative phase on transient evolution in an open resonant ladder-type atomic system
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作者 杨艳玲 刘中波 +2 位作者 王蕾 仝殿民 樊锡君 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第3期1054-1060,共7页
In an open ladder-type resonant atomic system, variation in relative phase between probe and driving fields does not affect the transient evolution of populations, but it has remarkable effects on gain and dispersion ... In an open ladder-type resonant atomic system, variation in relative phase between probe and driving fields does not affect the transient evolution of populations, but it has remarkable effects on gain and dispersion of the probe field. No matter whether an incoherent pump is present or absent, transient and stationary gains without inversion (GWI) always can be obtained by choosing an appropriate value of the relative phase. When the incoherent pump is absent, the values of transient and stationary GWIs are much larger and the time interval required to reach the stationary value is longer than those when the incoherent pump is present. Varying the exit rate and the ratio between injection rates can obviously change the phase-dependent GWI. In addition, in the transient evolution process, the phenomenon of high dispersion (refractive index) without absorption occurs at some values of relative phase. In the corresponding closed system, the stationary GWI can be obtained by choosing an appropriate value of relative phase only when incoherent pump exists, moreover the gain is smaller than that in the open system. 展开更多
关键词 open system relative phase transient evolution gain without inversion
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Controlling cooperativity of a metastable open system coupled weakly to a noisy environment
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作者 Victor I.Teslenko Oleksiy L.Kapitanchuk Zhao Yang 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第2期501-512,共12页
The notion of cooperativity comprises a specific characteristic of a multipartite system concerning its ability to demonstrate a sigmoidal-type response of varying sensitivities to input stimuli in transitions between... The notion of cooperativity comprises a specific characteristic of a multipartite system concerning its ability to demonstrate a sigmoidal-type response of varying sensitivities to input stimuli in transitions between states under controlled conditions.From a statistical physics viewpoint,in this work we attempt to describe the cooperativity by the stability of a metastable open system with respect to irreversibility.To treat the evolution of a system weakly coupled to the environment in a kinetic framework,we consider two fluctuating energy levels of different dimensionalities,initial population of one level,reversible transitions of population between the levels,and irreversible depopulation of another level.An average is made over level fluctuations and environment vibrations so that an inter-level transition rate can be obtained accounting for the influences of external control on level position and dimensionality.It is found that the cooperativity of the two-level system is bounded approximately between 0.736 and unity,with the lower bound indicating worsening system stability. 展开更多
关键词 metastable open system nonstationary kinetic processes IRREVERSIBILITY energy fluctuations
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Prevalence of Primary Open Angle Glaucoma among Patients with Diagnosis of Systemic Hypertension and Diabetes Mellitus: The Colombian Glaucoma Study 被引量:1
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作者 Carlos E. Rivera Erika Cantor +8 位作者 Andres Castillo Alexander Martinez Lyle Newball Juan C. Rueda Alejandro Valencia Sandra Belalcazar Tulio Cabal Oscar Albis-Donado Fabian Mendez 《Open Journal of Ophthalmology》 2020年第2期99-114,共16页
Objective: To establish the prevalence and risk factors of Primary Open Angle Glaucoma (POAG) among patients with Systemic Hypertension (SH) and Diabetes Mellitus (DM) in six cities of Colombia. Methods: A cross-secti... Objective: To establish the prevalence and risk factors of Primary Open Angle Glaucoma (POAG) among patients with Systemic Hypertension (SH) and Diabetes Mellitus (DM) in six cities of Colombia. Methods: A cross-sectional study among hypertensive and diabetic patients was conducted in Colombia. This study included 2067 subjects older than 50 years of age diagnosed with SH and/or DM. Participants underwent a complete ophthalmic examination including intraocular pressure (IOP) measurement by Goldmann tonometry and blood pressure measurement. The glaucoma diagnosis was confirmed by structural and functional evidence. Interviews and standardized questionnaires were used to evaluate participants’ lifestyle and other health conditions. Results: Among participants with DM/SH, 142 cases of POAG were confirmed for a prevalence of 5.6% [95% CI: 4.6 - 6.6], while 9.1% were glaucoma suspects [95% CI: 7.8% - 10.4%]. The majority of confirmed cases (77.5%) were undiagnosed. The prevalence of POAG was significantly higher with male gender, greater age, and diastolic blood pressure > 90 mmHg as risk factors. Conclusion: We found a high prevalence of POAG in patients with adequate SH and DM care in a novel Latino population. We also found great unawareness of the disease in this population. Our results have potentially enormous public health implications for Colombia and other Latino populations. 展开更多
关键词 open Angle-Glaucoma GLAUCOMA systemIC HYPERTENSION DIABETES MELLITUS
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Quantum Teleportation with an Accelerated Partner in Open System
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作者 Maohuai Xiang Jiliang Jing 《Journal of Quantum Information Science》 2012年第4期103-111,共9页
We investigate the teleportation between two relatively accelerating partners undergoing the phase flip, bit flip and bit-phase flip channels. We find that: 1) the fidelity decreases by increasing the acceleration of ... We investigate the teleportation between two relatively accelerating partners undergoing the phase flip, bit flip and bit-phase flip channels. We find that: 1) the fidelity decreases by increasing the acceleration of accelerated observer;2) the dynamic evolution of the fidelity is different for various channels if the acceleration is fixed;and 3) the fidelity is always symmetric about β2=1/2 where βis a parameter of the transmission state. 展开更多
关键词 Quantum TELEPORTATION Non-Inertial FRAMES open system
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Distribution of non-Markovian intervals for open qubit systems
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作者 郑艳萍 唐宁 +1 位作者 王国友 曾浩生 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第11期47-52,共6页
We study the non-Markovianity of open qubit systems using the measure N proposed by Breuer, Laine and Piilo [Phys. Rev. Lett. 103 210401 (2009)]. We find that for the three types of quantum noises, amplitude-damping... We study the non-Markovianity of open qubit systems using the measure N proposed by Breuer, Laine and Piilo [Phys. Rev. Lett. 103 210401 (2009)]. We find that for the three types of quantum noises, amplitude-damping, dephasing and depolarizing noises, there exist some non-Markovian time intervals whose distribution is independent of the selection of the pair of initial states. Therefore, the maximization in the definition of measure N can be actually removed without influencing the detection of non-Markovianity. 展开更多
关键词 open quantum system non-Markovianity non-Markovian interval
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Primordial Open-System Thermodynamics and the Origin of a Biophysics Selection Principle
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作者 Alfred Bennun 《Open Journal of Biophysics》 2012年第3期72-79,共8页
Mesons and baryons, according to their rest mass and half-life, show a tendency for de-confinement and re-confinement of energy, contributing to a continuous surge of enthalpy along the primordial chronology. The stro... Mesons and baryons, according to their rest mass and half-life, show a tendency for de-confinement and re-confinement of energy, contributing to a continuous surge of enthalpy along the primordial chronology. The strong force opposes to the separation of the constitutive quarks of pions, which by self-multiplication, absorb the energy released by decay and pair-annihilation. The 1% of mass apported by quarks requires an additional 99% of energy from this decay to manifest as gluons-hadrons formation. Processes like oscillation neutron-proton and antineutron-antiproton cycles are capable to capture primordial radiation, and may have prevented a Universe immersed into residual gamma radiation. 展开更多
关键词 Asymmetry HALF-LIFE Particles-Antiparticles Neutrinos-Antineutrinos LEAK open system
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