一种云平台虚拟机镜像保护的方法

提出了一种云平台虚拟机镜像数据保护的方法,主要解决云环境下大镜像文件通过网络传输时的机密性保护和性能优化问题,避免非法客户端对虚拟机镜像数据的恶意非法操作,防止平台数据泄漏。实验数据验证,该方法具备在云平台上进行大数据加密保护能力,同时使云平台虚拟机业务下发时的加密解密性能得到优化提升,在实际的工程应用中具有一定的可行性。

基于瞬时特征参数和功率谱熵的联合调制识别

针对传统的瞬时特征参数识别法在低信噪比下识别信号种类少、识别率低等问题,文中提出了一种基于瞬时特征参数与功率谱熵联合的调制识别方法。该方法通过改进后的瞬时幅度及相位特征参数对调制信号进行识别,并引入了功率谱熵特征参数,可进一步实现对更多信号的类内识别。在信号类内识别方面,采用决策树分类方法,选取合适的门限值对常用的9种数字调制信号{ASK、4ASK、2FSK、4FSK、8FSK、BPSK、QPSK、8PSK、16QAM}进行识别分类。蒙特卡洛实验结果表明,相较于现有的识别方法,文中所提出的方法增加了识别信号的种类,还提高了低信噪比情况下的信号识别准确率。

中药一致性评价新技术--中药太赫兹光谱发展及其量子指纹图谱在中药一致性评价中的应用

目的综述太赫兹光谱在中药质量控制中的应用,提出用中药太赫兹光谱量子指纹评价甘草质量的一致性。方法依据文献综述太赫兹光谱原理和其在中药质量控制中的实际应用进展,采用太赫兹量子指纹图谱用系统指纹定量法评价甘草药材质量的一致性情况。结果太赫兹光谱技术是近年来新兴光谱分析手段,其具有瞬态性、宽带性、相干性、低能性、强穿透性等独特性质,可直接、无损害地应用于中药的整体定性和定量分析。太赫兹光谱量子指纹化技术能给出峰号、峰位、半峰宽、峰高、峰面积和峰面积百分比等符合国际通用的*.cdf文件格式,把无序的太赫兹光谱指纹变成规律化的量子指纹图谱而实现对甘草药材质量的一致性评价。结论太赫兹光谱量子指纹图谱技术能有效评价甘草药材质量,其可做为中药质量一致性评价的一种可行技术。

急性脊髓损伤患者治疗的临床操作指南:关于MRI基线在临床治疗决策与结果预测中作用的几点建议（英文）

The objective of this guideline is to outline the role of magnetic resonance imaging(MRI) in clinical decision making and outcome prediction in patients with traumatic spinal cord injury(SCI).Methods A systematic review of the literature was conducted to address key questions related to the use of MRI in patients with traumatic SCI.This review focused on longitudinal studies that controlled for baseline neurologic status.A multidisciplinary Guideline Development Group(GDG) used this information,their clinical expertise,and patient input to develop recommendations on the use of MRI for SCI patients.Based on GRADE(Grading of Recommendation,Assessment,Development and Evaluation),a strong recommendation is worded as " we recommend," whereas a weaker recommendation is indicated by "we suggest." Results Based on the limited available evidence and the clinical expertise of the GDG,our recommendations were:(1) "We suggest that MRI be performed in adult patients with acute SCI prior to surgical intervention,when feasible,to facilitate improved clinical decision-making"(quality of evidence,very low) and(2) "We suggest that MRI should be performed in adult patients in the acute period following SCI,before or after surgical intervention,to improve prediction of neurologic outcome "(quality of evidence,low).Conclusions These guidelines should be implemented into clinical practice to improve outcomes and prognostication for patients with SCI.

论少捕慎诉慎押的生成逻辑、理论意蕴与实现路径

少捕慎诉慎押刑事司法政策是在新形势下罪刑结构及犯罪结构出现明显变化的条件下,对“捕诉押”制度进行的探索。为有效贯彻落实少捕慎诉慎押刑事司法政策,需要准确把握“少捕”“慎诉”“慎押”的理论内涵,转变“有罪推定”的惯性思维,深刻理解“社会危险性”对“少捕”“慎押”的决定性意义,依法用好用足“相对不起诉”制度,为社会治理现代化提供有效的司法实践经验。

Energy efficiency training's effect on fatigue scores of children with a cancer diagnosis

Objective:Fatigue is the most common complication of cancer treatment procedure during chemotherapy,leading to limited daily activities,mood swings,and ultimately impaired functional status.This study aimed to determine the effect of energy efficiency training on the fatigue scores of children with a cancer diagnosis.Methods:In the present clinical trial study,30 children with a cancer diagnosis were randomly assigned variously to the control and testing groups.The cancer-related fatigue questionnaire for children with cancer was employed as the data collection tool.The intervention of the testing group was conducted in 4 sessions of 45-60 min of face-to-face interaction,group sessions,and questionand-answer sessions.Meanwhile,routine interventions were employed in the control group.Quantitative variables were repor ted as mean and standard deviation,and qualitative variables as frequency and percentage.Stata 11 statistical software and a change score approach were used to analyze the data.Results:The mean fatigue score of the testing group increased from 72.12 to 77.53.There was a statistically significant difference between the mean fatigue scores of the testing group before and after the intervention(P=0.013),and the children’s fatigue score decreased.There was a statistically significant difference between the mean fatigue scores of the testing and control groups before and after the intervention(P=0.001),and the fatigue score of the children in the testing group had decreased compared to the control group.Conclusions:Energy efficiency techniques can be employed to increase energy and reduce fatigue during pediatric chemotherapy.

Research on the Distribution of Major Metal Elements in the Typical Landslide Soil of the Three Gorges Reservoir Area

In this article, a laboratory-built experimental system-laser-induced breakdown spec-troscopy （LIBS）, is used to measure soil samples. It explores landslides band soil of five typical land-slides in Xiangxi （香溪） River Section of the Three Gorges Reservoir area, which include Bazimen （八字门） landslide, Baijiabao （白家堡） landslide, Jiajiadian （贾家店） landslide, Sixiangxi （泗乡溪）landslide and an unnamed landslide that has already slipped. Soil samples of the five landslides are taken in dif-ferent latitudes, and in relatively consistent altitude. Through experimental measurement, the authors get spectrum of those soil samples, and then do qualitative and quantitative analyses of elements （Mg, Si, K, Al, etc.） in them. The authors conclude that main metal elements in the soil change according to different longitudes and latitudes, which opens up a new way of thinking for the quantitative analysis of the function of soil and water, and for the establishment of relations between chemical environment factors and soil engineering mechanics effects.