We show a quantitative technique characterized by low numerical mediation for the reconstruction of temporal sequences of geophysical data of length L interrupted for a time ΔT where . The aim is to protect the infor...We show a quantitative technique characterized by low numerical mediation for the reconstruction of temporal sequences of geophysical data of length L interrupted for a time ΔT where . The aim is to protect the information acquired before and after the interruption by means of a numerical protocol with the lowest possible calculation weight. The signal reconstruction process is based on the synthesis of the low frequency signal extracted for subsampling (subsampling ∇Dirac = ΔT in phase with ΔT) with the high frequency signal recorded before the crash. The SYRec (SYnthetic REConstruction) method for simplicity and speed of calculation and for spectral response stability is particularly effective in the studies of high speed transient phenomena that develop in very perturbed fields. This operative condition is found a mental when almost immediate informational responses are required to the observation system. In this example we are dealing with geomagnetic data coming from an uw counter intrusion magnetic system. The system produces (on time) information about the transit of local magnetic singularities (magnetic perturbations with low spatial extension), originated by quasi-point form and kinematic sources (divers), in harbors magnetic underwater fields. The performances of stability of the SYRec system make it usable also in long and medium period of observation (activity of geomagnetic observatories).展开更多
In this in-depth exploration, I delve into the complex implications and costs of cybersecurity breaches. Venturing beyond just the immediate repercussions, the research unearths both the overt and concealed long-term ...In this in-depth exploration, I delve into the complex implications and costs of cybersecurity breaches. Venturing beyond just the immediate repercussions, the research unearths both the overt and concealed long-term consequences that businesses encounter. This study integrates findings from various research, including quantitative reports, drawing upon real-world incidents faced by both small and large enterprises. This investigation emphasizes the profound intangible costs, such as trade name devaluation and potential damage to brand reputation, which can persist long after the breach. By collating insights from industry experts and a myriad of research, the study provides a comprehensive perspective on the profound, multi-dimensional impacts of cybersecurity incidents. The overarching aim is to underscore the often-underestimated scope and depth of these breaches, emphasizing the entire timeline post-incident and the urgent need for fortified preventative and reactive measures in the digital domain.展开更多
在传统的块级持续数据保护(continuous data protection,CDP)系统中,过去某时间点的恢复任务一旦完成,被保护磁盘当前时刻的数据状态就被完全覆盖,必须将被保护磁盘再次恢复到最新数据状态,当前工作才能得以继续进行下去.针对传统CDP系...在传统的块级持续数据保护(continuous data protection,CDP)系统中,过去某时间点的恢复任务一旦完成,被保护磁盘当前时刻的数据状态就被完全覆盖,必须将被保护磁盘再次恢复到最新数据状态,当前工作才能得以继续进行下去.针对传统CDP系统恢复功能"一次查看,两次恢复"的问题,提出了日志盘分区技术及一种元数据层次式多级索引技术.将元数据与变动数据分别存放在日志盘的不同区域,并利用B^+树与改进B^+树将元数据区块和变动数据区块组织起来,形成元数据层次式多级索引,将过去任意时间点的数据挂载到虚拟磁盘供用户检视.经实验证明,该方法在不影响被保护磁盘当前数据状态的前提下向用户提供过去任意时间点的数据,简化了用户操作,减少了时间消耗.展开更多
在传统的块级持续数据保护(continuous data protection,CDP)技术中,为了减少恢复时遍历元数据记录的时间、加快恢复速度,通常需要定期插入受保护卷的快照.频繁插入快照提升了恢复速度的同时也大大增加了存储压力.针对传统快照方法占用...在传统的块级持续数据保护(continuous data protection,CDP)技术中,为了减少恢复时遍历元数据记录的时间、加快恢复速度,通常需要定期插入受保护卷的快照.频繁插入快照提升了恢复速度的同时也大大增加了存储压力.针对传统快照方法占用存储空间大的问题,提出了一种改进的快照方法MS-CDP.在元数据记录中增加顺序索引号、前项指针和后项指针.需要插入快照时,无需保留当前时刻的完整映射表,通过时间戳和块号的函数关系,只保留极值点对应的映射表表项即可.经实验证明,该方法显著地减少了快照的存储空间,降低了CDP系统服务端的存储压力.展开更多
随着话音漫游业务的快速发展,话音漫游清算涉及的领域不断扩大,在重大事故,自然灾害等突发事件发生时确保清算数据的可用性和业务连续性就显得尤为重要.针对话音漫游清算系统的容灾需求以及有待改进的问题,通过研究分析CDP(Continuous D...随着话音漫游业务的快速发展,话音漫游清算涉及的领域不断扩大,在重大事故,自然灾害等突发事件发生时确保清算数据的可用性和业务连续性就显得尤为重要.针对话音漫游清算系统的容灾需求以及有待改进的问题,通过研究分析CDP(Continuous Data Protection)容灾技术,提出将CDP技术运用到话音漫游清算容灾系统的方法,设计并构建了一套具有持续数据保护功能和全面数据恢复能力的容灾系统.实践证明,该方法能够在各种灾难场景中有效地保障话音漫游清算系统的数据完整性和业务连续性.展开更多
针对连续群智感知中隐私要求提高、收集到的感知数据不可靠和用户参与感知任务积极性低等问题,提出了一种基于对称加密和双层真值发现的连续群智感知激励机制(Symmetric Encryption and Double Truth Discovery Based Incentive Mechani...针对连续群智感知中隐私要求提高、收集到的感知数据不可靠和用户参与感知任务积极性低等问题,提出了一种基于对称加密和双层真值发现的连续群智感知激励机制(Symmetric Encryption and Double Truth Discovery Based Incentive Mechanism,SDIM)。首先,使用对称加密算法对感知数据进行隐私保护,在隐私要求较高并且感知数据量较大时,可以降低计算开销,减少数据加密和奖励计算的时间。其次,基于双层真值发现模型提出了一种支持数据可靠性评估的激励机制,实现连续群智感知的实时奖励,并在参与者有恶意行为时提高奖励公平性。最后给出了SDIM的双重隐私性分析。仿真结果表明,SDIM可以根据数据可靠性有效地计算出真值和奖励,在数据加密和奖励分发的时间上明显优于对比模型,并在参与者有恶意行为时能够更加公平地计算奖励。展开更多
文摘We show a quantitative technique characterized by low numerical mediation for the reconstruction of temporal sequences of geophysical data of length L interrupted for a time ΔT where . The aim is to protect the information acquired before and after the interruption by means of a numerical protocol with the lowest possible calculation weight. The signal reconstruction process is based on the synthesis of the low frequency signal extracted for subsampling (subsampling ∇Dirac = ΔT in phase with ΔT) with the high frequency signal recorded before the crash. The SYRec (SYnthetic REConstruction) method for simplicity and speed of calculation and for spectral response stability is particularly effective in the studies of high speed transient phenomena that develop in very perturbed fields. This operative condition is found a mental when almost immediate informational responses are required to the observation system. In this example we are dealing with geomagnetic data coming from an uw counter intrusion magnetic system. The system produces (on time) information about the transit of local magnetic singularities (magnetic perturbations with low spatial extension), originated by quasi-point form and kinematic sources (divers), in harbors magnetic underwater fields. The performances of stability of the SYRec system make it usable also in long and medium period of observation (activity of geomagnetic observatories).
文摘In this in-depth exploration, I delve into the complex implications and costs of cybersecurity breaches. Venturing beyond just the immediate repercussions, the research unearths both the overt and concealed long-term consequences that businesses encounter. This study integrates findings from various research, including quantitative reports, drawing upon real-world incidents faced by both small and large enterprises. This investigation emphasizes the profound intangible costs, such as trade name devaluation and potential damage to brand reputation, which can persist long after the breach. By collating insights from industry experts and a myriad of research, the study provides a comprehensive perspective on the profound, multi-dimensional impacts of cybersecurity incidents. The overarching aim is to underscore the often-underestimated scope and depth of these breaches, emphasizing the entire timeline post-incident and the urgent need for fortified preventative and reactive measures in the digital domain.
文摘在传统的块级持续数据保护(continuous data protection,CDP)系统中,过去某时间点的恢复任务一旦完成,被保护磁盘当前时刻的数据状态就被完全覆盖,必须将被保护磁盘再次恢复到最新数据状态,当前工作才能得以继续进行下去.针对传统CDP系统恢复功能"一次查看,两次恢复"的问题,提出了日志盘分区技术及一种元数据层次式多级索引技术.将元数据与变动数据分别存放在日志盘的不同区域,并利用B^+树与改进B^+树将元数据区块和变动数据区块组织起来,形成元数据层次式多级索引,将过去任意时间点的数据挂载到虚拟磁盘供用户检视.经实验证明,该方法在不影响被保护磁盘当前数据状态的前提下向用户提供过去任意时间点的数据,简化了用户操作,减少了时间消耗.
文摘在传统的块级持续数据保护(continuous data protection,CDP)技术中,为了减少恢复时遍历元数据记录的时间、加快恢复速度,通常需要定期插入受保护卷的快照.频繁插入快照提升了恢复速度的同时也大大增加了存储压力.针对传统快照方法占用存储空间大的问题,提出了一种改进的快照方法MS-CDP.在元数据记录中增加顺序索引号、前项指针和后项指针.需要插入快照时,无需保留当前时刻的完整映射表,通过时间戳和块号的函数关系,只保留极值点对应的映射表表项即可.经实验证明,该方法显著地减少了快照的存储空间,降低了CDP系统服务端的存储压力.
文摘随着话音漫游业务的快速发展,话音漫游清算涉及的领域不断扩大,在重大事故,自然灾害等突发事件发生时确保清算数据的可用性和业务连续性就显得尤为重要.针对话音漫游清算系统的容灾需求以及有待改进的问题,通过研究分析CDP(Continuous Data Protection)容灾技术,提出将CDP技术运用到话音漫游清算容灾系统的方法,设计并构建了一套具有持续数据保护功能和全面数据恢复能力的容灾系统.实践证明,该方法能够在各种灾难场景中有效地保障话音漫游清算系统的数据完整性和业务连续性.
文摘针对连续群智感知中隐私要求提高、收集到的感知数据不可靠和用户参与感知任务积极性低等问题,提出了一种基于对称加密和双层真值发现的连续群智感知激励机制(Symmetric Encryption and Double Truth Discovery Based Incentive Mechanism,SDIM)。首先,使用对称加密算法对感知数据进行隐私保护,在隐私要求较高并且感知数据量较大时,可以降低计算开销,减少数据加密和奖励计算的时间。其次,基于双层真值发现模型提出了一种支持数据可靠性评估的激励机制,实现连续群智感知的实时奖励,并在参与者有恶意行为时提高奖励公平性。最后给出了SDIM的双重隐私性分析。仿真结果表明,SDIM可以根据数据可靠性有效地计算出真值和奖励,在数据加密和奖励分发的时间上明显优于对比模型,并在参与者有恶意行为时能够更加公平地计算奖励。
