Internet of Vehicles (IoV) is a new system that enables individual vehicles to connect with nearby vehicles,people, transportation infrastructure, and networks, thereby realizing amore intelligent and efficient transp...Internet of Vehicles (IoV) is a new system that enables individual vehicles to connect with nearby vehicles,people, transportation infrastructure, and networks, thereby realizing amore intelligent and efficient transportationsystem. The movement of vehicles and the three-dimensional (3D) nature of the road network cause the topologicalstructure of IoV to have the high space and time complexity.Network modeling and structure recognition for 3Droads can benefit the description of topological changes for IoV. This paper proposes a 3Dgeneral roadmodel basedon discrete points of roads obtained from GIS. First, the constraints imposed by 3D roads on moving vehicles areanalyzed. Then the effects of road curvature radius (Ra), longitudinal slope (Slo), and length (Len) on speed andacceleration are studied. Finally, a general 3D road network model based on road section features is established.This paper also presents intersection and road section recognition methods based on the structural features ofthe 3D road network model and the road features. Real GIS data from a specific region of Beijing is adopted tocreate the simulation scenario, and the simulation results validate the general 3D road network model and therecognitionmethod. Therefore, thiswork makes contributions to the field of intelligent transportation by providinga comprehensive approach tomodeling the 3Droad network and its topological changes in achieving efficient trafficflowand improved road safety.展开更多
目的系统评价补肾中药联合双膦酸盐类药物治疗恶性肿瘤骨转移的有效性及安全性,以期为临床治疗提供参考。方法通过检索CNKI、CBM、VIP、Wanfang Data等数据库,检索时间为所有数据库建库至2023年5月5日,筛选补肾中药联合双膦酸盐类药物...目的系统评价补肾中药联合双膦酸盐类药物治疗恶性肿瘤骨转移的有效性及安全性,以期为临床治疗提供参考。方法通过检索CNKI、CBM、VIP、Wanfang Data等数据库,检索时间为所有数据库建库至2023年5月5日,筛选补肾中药联合双膦酸盐类药物治疗恶性肿瘤骨转移的随机对照临床试验,使用Cochrane偏倚风险评估工具对纳入的文献质量进行评估,并采用Rev Man 5.3软件对纳入研究进行Meta分析。结果共纳入18项临床研究,总样本量为1213例,其中对照组594例,治疗组619例。治疗组患者骨转移无进展生存时间、骨转移病灶疗效、止痛效果、数字化评估量表(NRS)疼痛评分、Karnofsky功能状态评估表(KPS)评分、活动能力、血钙水平及不良反应发生情况均优于对照组,差异均有统计学意义(P<0.05)。2组患者治疗前后碱性磷酸酶水平差异无统计学意义(P>0.05)。结论补肾中药联合双膦酸盐类药物可以抑制骨转移病灶进展,减轻骨转移引起的疼痛,改善患者生活质量及活动能力,并且可以降低血钙水平及不良反应发生率,证明从肾论治恶性肿瘤骨转移有一定的临床意义。展开更多
目的探讨以护士为主导的出院准备干预对学龄前反复喘息患儿出院后症状控制的影响。方法以2020年10月—2023年3月收治的99例学龄前反复喘息患儿及其照护者为研究对象,随机分为对照组和干预组。对照组接受常规出院护理指导。干预组在按常...目的探讨以护士为主导的出院准备干预对学龄前反复喘息患儿出院后症状控制的影响。方法以2020年10月—2023年3月收治的99例学龄前反复喘息患儿及其照护者为研究对象,随机分为对照组和干预组。对照组接受常规出院护理指导。干预组在按常规出院护理指导基础上,实施以护士为主导的出院准备干预。根据出院准备度-父母版量表评分、改良中文版儿童呼吸和哮喘控制测试(test for respiratory and asthma control in kids,TRACK)问卷评分以及患儿症状控制指标的变化情况,对2组的干预效果进行评估和比较。结果出院准备度总分及其疾病知识、自身状况、出院后应对、可获得的社会支持维度评分,干预组分别为195.28±5.23、74.52±1.72、63.22±1.64、25.18±2.09、32.36±3.71,对照组分别为177.82±7.98、69.84±6.22、57.22±5.33、22.39±2.83、28.37±3.95,干预组各项评分均显著高于对照组(P<0.01)。TRACK问卷评分,2组患儿出院日的评分无显著差异;出院后1、3、6个月随访时,干预组评分分别为80.60±6.52、85.60±5.61、88.10±5.28,对照组评分分别为78.47±6.71、83.47±5.23、83.88±5.52,干预组显著优于对照组(P<0.05)。在症状控制指标的喘息发作和因喘息就诊方面,干预组的表现优于对照组(P<0.001)。结论实施以护士为主导的出院准备干预,可提高学龄前反复喘息患儿照护者的出院准备度,有利于患儿喘息症状控制。展开更多
The object of this study is to investigate the effects of sodium alginate(SA)and CaCl_(2) on the physicochemical characteristics of shrimp surimi by studying gel strength,water holding capacity(WHC),as well as by text...The object of this study is to investigate the effects of sodium alginate(SA)and CaCl_(2) on the physicochemical characteristics of shrimp surimi by studying gel strength,water holding capacity(WHC),as well as by texture profile analysis(TPA).In addition,the mechanism was analyzed through chemical interactions,protein secondary structure,and microstructure.The results showed that with the addition of different concentrations of SA and CaCl_(2) to the shrimp surimi,the gel quality firstly increased and then decreased with the increase of SA and CaCl_(2) concentrations.The highest values of WHC,breaking force and gel strength were obtained with the addition of 1.2%SA or 0.1%CaCl_(2).When SA and CaCl_(2) were used in concert,the group containing 1.2%SA and 0.15%CaCl_(2) had the highest gel strength with the densest three-dimensional network structure of the gel.In addition,the results of chemical interaction analyses showed that hydrogen and ionic bonds were the main chemical bonds of shrimp surimi sol,while shrimp surimi gel mainly consisted of hydrophobic and disulfide bonds.The incorporation of SA and CaCl_(2) resulted in a significant increase in hydrophobic interactions and disulfide bonding,which could effectively improve the gel properties of shrimp surimi.展开更多
基金the National Natural Science Foundation of China(Nos.62272063,62072056 and 61902041)the Natural Science Foundation of Hunan Province(Nos.2022JJ30617 and 2020JJ2029)+4 种基金Open Research Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology,Nanjing University of Posts and Telecommunications(No.JZNY202102)the Traffic Science and Technology Project of Hunan Province,China(No.202042)Hunan Provincial Key Research and Development Program(No.2022GK2019)this work was funded by the Researchers Supporting Project Number(RSPD2023R681)King Saud University,Riyadh,Saudi Arabia.
文摘Internet of Vehicles (IoV) is a new system that enables individual vehicles to connect with nearby vehicles,people, transportation infrastructure, and networks, thereby realizing amore intelligent and efficient transportationsystem. The movement of vehicles and the three-dimensional (3D) nature of the road network cause the topologicalstructure of IoV to have the high space and time complexity.Network modeling and structure recognition for 3Droads can benefit the description of topological changes for IoV. This paper proposes a 3Dgeneral roadmodel basedon discrete points of roads obtained from GIS. First, the constraints imposed by 3D roads on moving vehicles areanalyzed. Then the effects of road curvature radius (Ra), longitudinal slope (Slo), and length (Len) on speed andacceleration are studied. Finally, a general 3D road network model based on road section features is established.This paper also presents intersection and road section recognition methods based on the structural features ofthe 3D road network model and the road features. Real GIS data from a specific region of Beijing is adopted tocreate the simulation scenario, and the simulation results validate the general 3D road network model and therecognitionmethod. Therefore, thiswork makes contributions to the field of intelligent transportation by providinga comprehensive approach tomodeling the 3Droad network and its topological changes in achieving efficient trafficflowand improved road safety.
文摘目的系统评价补肾中药联合双膦酸盐类药物治疗恶性肿瘤骨转移的有效性及安全性,以期为临床治疗提供参考。方法通过检索CNKI、CBM、VIP、Wanfang Data等数据库,检索时间为所有数据库建库至2023年5月5日,筛选补肾中药联合双膦酸盐类药物治疗恶性肿瘤骨转移的随机对照临床试验,使用Cochrane偏倚风险评估工具对纳入的文献质量进行评估,并采用Rev Man 5.3软件对纳入研究进行Meta分析。结果共纳入18项临床研究,总样本量为1213例,其中对照组594例,治疗组619例。治疗组患者骨转移无进展生存时间、骨转移病灶疗效、止痛效果、数字化评估量表(NRS)疼痛评分、Karnofsky功能状态评估表(KPS)评分、活动能力、血钙水平及不良反应发生情况均优于对照组,差异均有统计学意义(P<0.05)。2组患者治疗前后碱性磷酸酶水平差异无统计学意义(P>0.05)。结论补肾中药联合双膦酸盐类药物可以抑制骨转移病灶进展,减轻骨转移引起的疼痛,改善患者生活质量及活动能力,并且可以降低血钙水平及不良反应发生率,证明从肾论治恶性肿瘤骨转移有一定的临床意义。
文摘目的探讨以护士为主导的出院准备干预对学龄前反复喘息患儿出院后症状控制的影响。方法以2020年10月—2023年3月收治的99例学龄前反复喘息患儿及其照护者为研究对象,随机分为对照组和干预组。对照组接受常规出院护理指导。干预组在按常规出院护理指导基础上,实施以护士为主导的出院准备干预。根据出院准备度-父母版量表评分、改良中文版儿童呼吸和哮喘控制测试(test for respiratory and asthma control in kids,TRACK)问卷评分以及患儿症状控制指标的变化情况,对2组的干预效果进行评估和比较。结果出院准备度总分及其疾病知识、自身状况、出院后应对、可获得的社会支持维度评分,干预组分别为195.28±5.23、74.52±1.72、63.22±1.64、25.18±2.09、32.36±3.71,对照组分别为177.82±7.98、69.84±6.22、57.22±5.33、22.39±2.83、28.37±3.95,干预组各项评分均显著高于对照组(P<0.01)。TRACK问卷评分,2组患儿出院日的评分无显著差异;出院后1、3、6个月随访时,干预组评分分别为80.60±6.52、85.60±5.61、88.10±5.28,对照组评分分别为78.47±6.71、83.47±5.23、83.88±5.52,干预组显著优于对照组(P<0.05)。在症状控制指标的喘息发作和因喘息就诊方面,干预组的表现优于对照组(P<0.001)。结论实施以护士为主导的出院准备干预,可提高学龄前反复喘息患儿照护者的出院准备度,有利于患儿喘息症状控制。
基金supported by the Public Welfare Project of Ningbo(No.2022S211)the National Key R&D Program of China(No.2020YFD0900903)。
文摘The object of this study is to investigate the effects of sodium alginate(SA)and CaCl_(2) on the physicochemical characteristics of shrimp surimi by studying gel strength,water holding capacity(WHC),as well as by texture profile analysis(TPA).In addition,the mechanism was analyzed through chemical interactions,protein secondary structure,and microstructure.The results showed that with the addition of different concentrations of SA and CaCl_(2) to the shrimp surimi,the gel quality firstly increased and then decreased with the increase of SA and CaCl_(2) concentrations.The highest values of WHC,breaking force and gel strength were obtained with the addition of 1.2%SA or 0.1%CaCl_(2).When SA and CaCl_(2) were used in concert,the group containing 1.2%SA and 0.15%CaCl_(2) had the highest gel strength with the densest three-dimensional network structure of the gel.In addition,the results of chemical interaction analyses showed that hydrogen and ionic bonds were the main chemical bonds of shrimp surimi sol,while shrimp surimi gel mainly consisted of hydrophobic and disulfide bonds.The incorporation of SA and CaCl_(2) resulted in a significant increase in hydrophobic interactions and disulfide bonding,which could effectively improve the gel properties of shrimp surimi.
