Static secure techniques, such as firewall, hierarchy filtering, distributed disposing,layer management, autonomy agent, secure communication, were introduced in distributed intrusion detection. The self-protection ag...Static secure techniques, such as firewall, hierarchy filtering, distributed disposing,layer management, autonomy agent, secure communication, were introduced in distributed intrusion detection. The self-protection agents were designed, which have the distributed architecture,cooperate with the agents in intrusion detection in a loose-coupled manner, protect the security of intrusion detection system, and respond to the intrusion actively. A prototype self-protection agent was implemented by using the packet filter in operation system kernel. The results show that all the hosts with the part of network-based intrusion detection system and the whole intrusion detection system are invisible from the outside and network scanning, and cannot apperceive the existence of network-based intrusion detection system. The communication between every part is secure. In the low layer, the packet streams are controlled to avoid the buffer leaks exist ing in some system service process and back-door programs, so as to prevent users from misusing and vicious attack like Trojan Horse effectively.展开更多
目的:探讨Orem自理模式结合康复训练在慢性阻塞性肺疾病患者中的应用效果。方法:选取2019年10月至2021年12月本院收治的慢性阻塞性肺疾病患者106例,根据随机数字表法分为Orem组和康复组各53例,所有患者给予常规治疗和护理措施,康复组给...目的:探讨Orem自理模式结合康复训练在慢性阻塞性肺疾病患者中的应用效果。方法:选取2019年10月至2021年12月本院收治的慢性阻塞性肺疾病患者106例,根据随机数字表法分为Orem组和康复组各53例,所有患者给予常规治疗和护理措施,康复组给予康复训练干预,Orem组给予Orem自理模式结合康复训练干预,比较两组患者干预前后肺功能治疗和血气指标、自我护理能力评分,并对两组患者负性情绪和生活质量进行比较,统计两组患者护理满意度。结果:干预前两组患者肺功能指标、血气指标、自我护理能力评分差异无统计学意义(P>0.05);干预后,Orem组第1秒用力呼气容积(forced expiratory volume in one second, FEV1)、用力肺活量(forced vital capacity, FVC)和FEV1/FVC水平高于康复组(P<0.05);干预后,Orem组动脉血氧分压(partial pressure of oxygen, PaO2)和血氧饱和度(oxygen saturation, SpO2)水平高于康复组(P<0.05),自护技能、自护责任感、自我概念和自护知识评分高于康复组(P<0.05),抑郁自评量表(Self-Rating Depression Scale, SDS)和生存质量特异性量表(Diabetes Specific Quality of Life, QSQL)评分低于康复组(P<0.05),患者总满意度(96.23%)高于康复组(79.25%)(χ^(2)=10.610,P=0.005)。结论:Orem自理模式结合康复训练在慢性阻塞性肺疾病患者中的应用效果较好,可明显改善患者肺功能和血气指标,提高患者自我护理能力,改善患者焦虑情绪,提高生活质量,患者满意度较高,值得进一步推广应用。展开更多
We present a conceptual configuration of a high-temperature superconducting（HTS）magnet made from REBCO（Re=Rare Earth,B=Barium,C=Copper,O=Oxide）annular plates,called a Bitter-like HTS magnet,which can operate in pe...We present a conceptual configuration of a high-temperature superconducting（HTS）magnet made from REBCO（Re=Rare Earth,B=Barium,C=Copper,O=Oxide）annular plates,called a Bitter-like HTS magnet,which can operate in persistent current mode without joint resistance and can be excited by a flux pump and without current leads and a persistent power supply.An REBCO annular magnet which can generate 1.5 T corresponding to the operating current density 80%of critical current density of the magnet at an operating temperature of65 K is conceptually designed.Then the thermal stability of the magnet is numerically simulated by Comsol software.Whein a piece of RBCO annular plate quenches,the maximum released energy is its stored energy because each REBCO annular plate in the Bitter-like magnet is in parallel.To calculate the stored energy in the REBCO annular plate,the inductance of every annular plate,including self-inductance and mutual inductance,is calculated.Compared with the minimum quench energy（MQE）and stored energy in one REBCO annular plate,the stored energy in one REBCO annular plate is always smaller than the MQE,and the REBCO annular plate will not be damaged even though the stored energy in the REBCO annular plate is fully released,which indicates that this 1.5 T Bitter-like magnet has the property of self-protection.展开更多
文摘Static secure techniques, such as firewall, hierarchy filtering, distributed disposing,layer management, autonomy agent, secure communication, were introduced in distributed intrusion detection. The self-protection agents were designed, which have the distributed architecture,cooperate with the agents in intrusion detection in a loose-coupled manner, protect the security of intrusion detection system, and respond to the intrusion actively. A prototype self-protection agent was implemented by using the packet filter in operation system kernel. The results show that all the hosts with the part of network-based intrusion detection system and the whole intrusion detection system are invisible from the outside and network scanning, and cannot apperceive the existence of network-based intrusion detection system. The communication between every part is secure. In the low layer, the packet streams are controlled to avoid the buffer leaks exist ing in some system service process and back-door programs, so as to prevent users from misusing and vicious attack like Trojan Horse effectively.
文摘目的:探讨Orem自理模式结合康复训练在慢性阻塞性肺疾病患者中的应用效果。方法:选取2019年10月至2021年12月本院收治的慢性阻塞性肺疾病患者106例,根据随机数字表法分为Orem组和康复组各53例,所有患者给予常规治疗和护理措施,康复组给予康复训练干预,Orem组给予Orem自理模式结合康复训练干预,比较两组患者干预前后肺功能治疗和血气指标、自我护理能力评分,并对两组患者负性情绪和生活质量进行比较,统计两组患者护理满意度。结果:干预前两组患者肺功能指标、血气指标、自我护理能力评分差异无统计学意义(P>0.05);干预后,Orem组第1秒用力呼气容积(forced expiratory volume in one second, FEV1)、用力肺活量(forced vital capacity, FVC)和FEV1/FVC水平高于康复组(P<0.05);干预后,Orem组动脉血氧分压(partial pressure of oxygen, PaO2)和血氧饱和度(oxygen saturation, SpO2)水平高于康复组(P<0.05),自护技能、自护责任感、自我概念和自护知识评分高于康复组(P<0.05),抑郁自评量表(Self-Rating Depression Scale, SDS)和生存质量特异性量表(Diabetes Specific Quality of Life, QSQL)评分低于康复组(P<0.05),患者总满意度(96.23%)高于康复组(79.25%)(χ^(2)=10.610,P=0.005)。结论:Orem自理模式结合康复训练在慢性阻塞性肺疾病患者中的应用效果较好,可明显改善患者肺功能和血气指标,提高患者自我护理能力,改善患者焦虑情绪,提高生活质量,患者满意度较高,值得进一步推广应用。
基金Supported by the Fundamental Research Funds for the Central Universities under Grant No 2018MS004
文摘We present a conceptual configuration of a high-temperature superconducting（HTS）magnet made from REBCO（Re=Rare Earth,B=Barium,C=Copper,O=Oxide）annular plates,called a Bitter-like HTS magnet,which can operate in persistent current mode without joint resistance and can be excited by a flux pump and without current leads and a persistent power supply.An REBCO annular magnet which can generate 1.5 T corresponding to the operating current density 80%of critical current density of the magnet at an operating temperature of65 K is conceptually designed.Then the thermal stability of the magnet is numerically simulated by Comsol software.Whein a piece of RBCO annular plate quenches,the maximum released energy is its stored energy because each REBCO annular plate in the Bitter-like magnet is in parallel.To calculate the stored energy in the REBCO annular plate,the inductance of every annular plate,including self-inductance and mutual inductance,is calculated.Compared with the minimum quench energy（MQE）and stored energy in one REBCO annular plate,the stored energy in one REBCO annular plate is always smaller than the MQE,and the REBCO annular plate will not be damaged even though the stored energy in the REBCO annular plate is fully released,which indicates that this 1.5 T Bitter-like magnet has the property of self-protection.
