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异质性视角下中小企业网络安全防御的最优投资策略

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系统工程理论与实践 2023年第2期43卷 398-420页

作者：王韧许豪王中杰徐徐湖南工商大学财政金融学院长沙410205 北京工商大学经济学院北京100048

信息技术的飞速发展,带来了复杂多样的网络安全问题.越来越多基础安全设施相对薄弱的中小企业开始尝试“风险管理服务+网络安全保险”这一安全防御模式.但防御投资过度或不足均会导致网络安全风险管理效率损失或防御失败.据此,在异质性... 详细信息

信息技术的飞速发展,带来了复杂多样的网络安全问题.越来越多基础安全设施相对薄弱的中小企业开始尝试“风险管理服务+网络安全保险”这一安全防御模式.但防御投资过度或不足均会导致网络安全风险管理效率损失或防御失败.据此,在异质性视角下,以中小企业为研究对象,对其网络安全投资决策模型进行了优化,并探讨了企业决策在多方博弈中的局部和全局最优解.研究表明,企业间安全防御投资行为处于非合作状态时,存在安全防御投资的最优解使风险厌恶型企业财富效用达到最大且稳定均衡;反之,若企业处于合作状态,尽管市场总效用有所提升,但由于存在“囚徒困境”,单个企业均存在打破合作的动机,因而在合作状态下,效用并不稳定;最后,讨论了考虑附加保费情形下保险免赔额、安全防御支出与非合作企业财富效用之间的关系,证明了设置一定的免赔额可对企业的财富效用起到促进作用.

关键词：异质性网络安全保险安全防御投资中小企业合作与非合作

Global Ramp Uniformity Correction Method for Super-Large Array CMOS Image Sensors

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Chinese Journal of Electronics 2024年第2期33卷 415-422页

作者： Ruiming XU zhongjie GUO Suiyang LIU Ningmei YU Xi'an University of Technology

Aiming at the problem of the non-uniformity of the ramp signal in the super-large array CMOS(complementary metal-oxide semiconductor) image sensors, a ramp uniformity correction method for CMOS image sensors is proposed in this paper. Based on the error storage technique, the ramp non-uniformity error is stored. And the input ramp signal of each column is shifted by level-shifting technique to eliminate the ramp non-uniformity *** on the 55 nm-1P4M CMOS process, this paper has completed the detailed circuit design and comprehensive simulation verification of the proposed method. Under the design conditions that the voltage range of the ramp signal is 1.4 V, the slope of the ramp signal is 71.908 V/ms, the number of pixels is 8192(H) × 8192(V), and a single pixel size is 10 μm, the correction method proposed in this paper reduces the ramp non-uniformity error from 7.89 m V to 36 μV. The differential non-linearity of the ramp signal is +0.0013/-0.004 LSB and the integral non-linearity is+0.045/-0.021 LSB. The ramp uniformity correction method proposed in this paper reduces the ramp non-uniformity error by 99.54% on the basis of ensuring the high linearity of the ramp signal, without significantly increasing the chip area and without introducing additional power consumption. The column fixed-pattern noise is reduced from 1.9%to 0.01%. It provides theoretical support for the design of high-precision CMOS image sensors.

关键词： Power demand Power transmission lines Array signal processing Noise Metals CMOS image sensors CMOS process

基于融合上下文的移动用户行为过程挖掘与预测

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计算机集成制造系统 2016年第2期22卷 302-311页

作者：王佳秋于浩王忠杰哈尔滨工业大学计算机科学与技术学院黑龙江哈尔滨150001

针对移动环境中单个用户个性化行为过程的挖掘和预测问题,考虑不同类型上下文对行为过程的影响,研究将行为过程中不同类型的上下文融合成统一的整体(情景),提出上下文融合过程模型。进而将上下文融合过程模型融入移动用户的行为过程中,... 详细信息

针对移动环境中单个用户个性化行为过程的挖掘和预测问题,考虑不同类型上下文对行为过程的影响,研究将行为过程中不同类型的上下文融合成统一的整体(情景),提出上下文融合过程模型。进而将上下文融合过程模型融入移动用户的行为过程中,提出一种基于融合上下文的行为过程模型。在此基础上提出一种挖掘算法ASCF-Mine,利用行为过程中存在的情景周期和时间属性来挖掘频繁的行为过程。结合频繁的行为过程,提出一种基于协同过滤的预测方法来自主构建满足用户个性化需求的行为过程。通过具体的实验分析,验证了所提方法的有效性。

关键词：上下文上下文融合过程模型行为过程挖掘行为过程预测

A Large-Scale Online Survey on Clinical Severity and Associated Risk Factors for SARS-CoV-2 Omicron Infection — China, April–May 2023

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China CDC weekly 2024年第15期6卷 305-311,I0001-I0004页

作者： Yanxia Sun Yuping Duan Jie Qian Yimin Qu Ye wang Guohui Fan Qiangru Huang zhongjie Li Weizhong Yang Luzhao Feng State Key Laboratory of Respiratory Health and Multimorbidity Key Laboratory of Pathogen Infection Prevention and ControlMinistry of EducationSchool of Population Medicine and Public HealthChinese Academy of Medical Science&Peking Union Medical CollegeBeijingChina

What is already known about this topic?Individuals who initially contract severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)lack significant mixed ***,it is crucial to monitor the clinical characteristics and associated factors of these individuals in order to inform *** is added by this report?The common symptoms reported were fever,cough,and sore *** and receiving four vaccination doses within a 6-month period were found to be associated with a shorter duration of virus shedding,decreased hospitalization rate,and reduced risk of *** aged 60 years and older,as well as those with underlying medical conditions,had a higher risk of developing *** are the implication for public health practices?Online surveys conducted through social media platforms have the potential to complement disease surveillance and data collection *** terms of vaccination prioritization,it is recommended to prioritize older individuals and those with underlying diseases.

关键词： doses Online initially

A novel cabazitaxel liposomes modified with ginsenoside Rk1 for cancer targeted therapy

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Acupuncture and Herbal Medicine 2024年第1期4卷 113-121页

作者： Dandan Huang zhongjie Tang Xiao Pu Tianqi wang Feiyan Gao Chong Li Medical Research Institute College of Pharmaceutical SciencesSouthwest UniversityChongqingChina Department of Pharmacy National University of SingaporeSingapore 117545Singapore

Objective:In this study,we aim to enhance the anti-prostate cancer efficacy of cabazitaxel(CTX)and reduce its immunosuppression and systemic toxicity by developing CTX-loaded liposomes modified with ginsenoside Rk1(Rk1/CTX-Lip).Methods:Physical and chemical properties of Rk1/CTX-Lip were *** evaluated the biological functions of Rk1/CTXLip,both in vitro and in vivo.A subcutaneous prostate cancer(RM-1)-bearing mouse model was established to study the efficacy of Rk1/CTX-Lip inhibition in ***,a Candida albicans infection model was established in tumor-bearing mice to study the infection-relieving efficacy of Rk1/***,biocompatibility and in vivo safety of Rk1/CTX-Lip were ***:We successfully prepared Rk1/CTX-Lip,achieving high CTX encapsulation efficiency(97.24±0.75)%and physical ***1/CTX-Lip demonstrated evasion of macrophage phagocytosis,effective tumor tissue targeting,and a significant reduction(>50%)in average tumor volume compared with Chol/***,it relieved the concurrent infection burden and effectively regulated immune organs and cells,demonstrating superior ***:Rk1/CTX-Lip presents a promising new therapy for prostate cancer and holds potential for relieving concurrent fungal infections in cancer patients with low immunity.

关键词： Cabazitaxel Fungal infection Ginsenoside Rk1 Liposome-drug delivery system Prostate cancer

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增光子圆态及其性质

光学学报 2008年第5期28卷 992-996页

作者：张克福王中结安徽师范大学物理与电子信息学院安徽芜湖241000

利用光场产生算符的逆算符作用于圆态来构造增光子圆态。讨论了此态的非经典性质,同时计算并模拟出它的维格纳(Wigner)函数。结果表明,在不同光强下,随着激发数的增大增光子圆态光场的平均光子数增加与减少交替地出现;光子激发后,光场... 详细信息

利用光场产生算符的逆算符作用于圆态来构造增光子圆态。讨论了此态的非经典性质,同时计算并模拟出它的维格纳(Wigner)函数。结果表明,在不同光强下,随着激发数的增大增光子圆态光场的平均光子数增加与减少交替地出现;光子激发后,光场的亚泊松统计特性得到增强,压缩效应却受到抑制。维格纳函数图像显示了增光子圆态显著的非经典性质,发现了光子激发与圆态光强的增大都能使量子态由叠加引起的干涉效应明显增强。另外,在不同叠加数的情况下,通过适当选择参量可使维格纳函数具有相同的变化规律。

关键词：鼍子光学增光子圆态玻色算符的逆算符非经典性质维格纳函数

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基于二次型规划考虑网络丢包的鲁棒状态估计

同济大学学报（自然科学版） 2012年第6期40卷 942-948页

作者：王中杰易总根同济大学电子与信息工程学院上海201804

提出一种可以体现网络丢包的离散时间线性时不变状态空间模型,并将鲁棒状态估计的问题转化为向量优化问题.为了能够快速有效地对该问题进行求解,通过标量化方法将向量优化问题转化为普通的标量二次型规划问题,然后将状态估计问题转化为... 详细信息

提出一种可以体现网络丢包的离散时间线性时不变状态空间模型,并将鲁棒状态估计的问题转化为向量优化问题.为了能够快速有效地对该问题进行求解,通过标量化方法将向量优化问题转化为普通的标量二次型规划问题,然后将状态估计问题转化为对标准l1正则化最小平方问题的求解.结合Kalman滤波的更新过程,提出了能够适用于具有数据包丢失情况下的鲁棒状态估计算法,通过仿真实验验证了算法的有效性.

关键词：鲁棒状态估计网络丢包二次型规划 l1正则化最小平方

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服务网络的启发式定制方法

计算机集成制造系统 2015年第6期21卷 1650-1661页

作者：王忠杰王少鹏徐飞哈尔滨工业大学计算机科学与技术学院黑龙江哈尔滨150001

为求解服务网络以成本有效的方式满足客户个性化需求的优化定制问题,提出一种启发式定制方法。服务网络通过多源参数和复合服务节点两种机制实现可定制性,针对特定个性化需求可有多种定制方案,需从中选取最优性能的定制方案。当服务网... 详细信息

为求解服务网络以成本有效的方式满足客户个性化需求的优化定制问题,提出一种启发式定制方法。服务网络通过多源参数和复合服务节点两种机制实现可定制性,针对特定个性化需求可有多种定制方案,需从中选取最优性能的定制方案。当服务网络因能力不足而无法完全满足需求时,找出与需求期望最接近的定制方案。在该方法中,采用启发式方法发现需求无法满足时最少需要补充的输入参数,采用人工蜂群算法发现与期望的服务质量距离最小的定制方案。实验发现,需求的严格程度、服务网络中包含的多源参数数目和服务节点数目对定制效果和效率具有较大影响,而复合服务节点数目对定制效果和效率的影响较小。

关键词：服务网络个性化需求服务大规模定制能力缺陷人工蜂群算法

Provenance of the Southeastern South China Block in the Late Triassic and Initiation of Paleo-Pacific Subduction: Evidence from Detrital Zircon U-Pb Geochronology

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Journal of Earth Science 2024年第5期35卷 1426-1446页

作者： Jintao Kong zhongjie Xu Rihui Cheng Duo Wan College of Earth Sciences Jilin University Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural and Resources

During the Late Paleozoic–Early Mesozoic Era, the sediment transport system and tectonic regime in the southeastern margin of the South China Block(SESCB) all changed, significantly affected by the Paleo-Pacific subduction. However, controversy exists about the Paleo-Pacific subduction's initiation time. This study uses detrital zircon U-Pb ages to discuss the Late Triassic source-tosink system in the SESCB. It provides some references for the Paleo-Pacific subduction process based on crucial age information and zircons' trace elements. The paleogeography and similarity of detrital zircon age distribution indicate that three sinks were found in the SESCB during the Late Triassic: 1. the Yangchun-Kaiping-Gaoming area, comprising major age ranges of 260–220, 460–400, and 1 200–800 Ma, which might be sourced from the Yunkai terrane; 2. the Jiexi-Kanshi-Nanjing area, characterized by the significant age component of 2 000–1 800 Ma, which corresponded to the Wuyi terrane; 3. the Xinan area, consisting of significant age groups of 290 – 250 and 380 – 320 Ma, which might be sourced from the magmatic rocks formed by the Huinan Movement and Paleo-Pacific subduction. Note that 290–250 Ma zircons were widely distributed in the Upper Triassic strata, and their trace elements suggested the existence of a magmatic arc near the SESCB during the 290–250 Ma. Thus, we propose that the Paleo-Pacific subduction might have begun in the Early Permian.

关键词： detrital zircon geochronology South China Block Paleo-Pacific Block provenance analysis geochronology geochemistry