Objective:To observe the intervention effect of clinical nursing pathway on patients receiving intravenous therapy via peripheral mid-long catheters.Methods:Ninety patients receiving intravenous therapy via mid-long c...Objective:To observe the intervention effect of clinical nursing pathway on patients receiving intravenous therapy via peripheral mid-long catheters.Methods:Ninety patients receiving intravenous therapy via mid-long catheters in the hospital from March 2024 to March 2025 were selected and randomly divided into a control group and an observation group,with 45 patients in each group.The control group received routine nursing intervention,while the observation group received clinical nursing pathway intervention.The nursing risk events,catheter indwelling time,and nursing satisfaction were evaluated in both groups.Results:The observation group had a shorter catheter indwelling time,fewer risk events during intravenous therapy(total incidence rate of 2.22%),and higher nursing satisfaction.Additionally,negative emotional feedback was reduced,and the SAS score(31.02±1.12)was lower in the observation group compared to the control group.There were significant differences between the two groups in all indicators(P<0.05).Conclusion:Applying the clinical nursing pathway during intravenous therapy via peripheral mid-long catheters can help ensure infusion safety,improve unstable emotional states,and promote high-quality service standards.展开更多
The cylindrical shell is one of the main structural parts in ocean engineering structures.These cylinders are mostly of medium length,which means that the radius of the cross section is significantly smaller than the ...The cylindrical shell is one of the main structural parts in ocean engineering structures.These cylinders are mostly of medium length,which means that the radius of the cross section is significantly smaller than the length of the cylindrical shell.From the viewpoint of the shell theory,they belong to the mid-long cylindrical shell category.To solve mechanical problems on this kind of structure,especially a cracked cylindrical shell,analysis based on shell theory is necessary.At present the generally used solving system for the mid-long cylindrical shell is too complicated,difficult to solve,and inapplicable to engineering.This paper introduced the Sanders' mid-long cylindrical shell theory which reduces the difficulty of the solution process,and will be suitable for solving problems with complicated boundary conditions.On this basis,the engineering applications of this theory were discussed in conjunction with the problem of a mid-long cylindrical shell having a circumferential crack.The solution process is simple,and the closed form solution can usually be found.In practical engineering applications,it gives satisfactory precision.展开更多
The earthquakes with Ms≥6.0 are often gathered into belts or clusters and are roughly consistent with tectonic structure trends in the Sichuan-Yunnan (Chuan-Dian) region. The middle south part(98°-106°E, 21...The earthquakes with Ms≥6.0 are often gathered into belts or clusters and are roughly consistent with tectonic structure trends in the Sichuan-Yunnan (Chuan-Dian) region. The middle south part(98°-106°E, 21°-34°N) of South-North Seismic Zone can be zoned into seven small areas. There all were strong quakes with M_s≥7.0 historically in each small area. Ten earthquakes with M_s≥7.0 have occurred in this region since 1970 and they appeared in five small areas respectively. The relationships between occurrence-time and cumulative frequencies of strong quakes in these five areas are shown to be an exponential distribution or power function. By examining the inner coincidence it is indicated that these relationships are of definite significance to mid-long term macroseismic prediction of each area.展开更多
Objective To verify the efficacy and safety of conversion from cyclosporine ( CsA) to tacrolimus ( Tac) in renal transplant recipients. Methods The clinical data of conversion from CsA to Tac in renal transplant recip...Objective To verify the efficacy and safety of conversion from cyclosporine ( CsA) to tacrolimus ( Tac) in renal transplant recipients. Methods The clinical data of conversion from CsA to Tac in renal transplant recipients were retrospectively analyzed. In 97 petients undergoing kidney transplantation,there were 62 cases of chronic al-展开更多
在中长期水火发电调度中考虑检修计划的影响是目前中长期水火发电调度面临的难题。利用现代整数代数建模技术，建立发电计划和检修计划协调优化的多场景调度模型。在该模型中，鉴于设备检修计划的连续性，在预测场景树的基础上，将场景...在中长期水火发电调度中考虑检修计划的影响是目前中长期水火发电调度面临的难题。利用现代整数代数建模技术，建立发电计划和检修计划协调优化的多场景调度模型。在该模型中，鉴于设备检修计划的连续性，在预测场景树的基础上，将场景节点划分成不同的场景，通过节点和场景关联矩阵，实现多场景下设备检修模型的构建。同时，鉴于中长期调度计划中发电计划和检修计划对时段间隔要求的不同，分别设置电量相关节点和电力相关节点，实现中长期发电计划和检修计划的协调。上述模型是一个大规模混合整数线性规划（mixed integer linear programming，MILP）问题，采用商用MILP求解器进行求解。大规模实际水火电系统的实例分析结果表明，所提模型和方法是可行、有效的。展开更多
为了保障城市电网规划质量和做好电力电量平衡,准确的中长期电力负荷预测变得尤为重要。针对现有方法在利用城市区域间空间关联性方面的不足,提出了一种基于动态时间规整(dynamic time warping,DTW)和时空注意力图卷积(spatio-temporal ...为了保障城市电网规划质量和做好电力电量平衡,准确的中长期电力负荷预测变得尤为重要。针对现有方法在利用城市区域间空间关联性方面的不足,提出了一种基于动态时间规整(dynamic time warping,DTW)和时空注意力图卷积(spatio-temporal attention graph convolution,ASTGCN)的预测方法。首先,通过深入分析目标城市各区域间的相关性,建立了耦合关系;其次,利用DTW算法构建邻接矩阵,捕捉城市各区域间的时空相关性;然后,应用ASTGCN模型预测各区域的负荷,以捕捉负荷的时空特征;最后,通过合并各区域的预测结果,得到整体的城市预测负荷。实验结果表明:所提方法能够更全面地捕捉城市中的时空关系,显著提高中长期负荷预测精度。展开更多
文摘Objective:To observe the intervention effect of clinical nursing pathway on patients receiving intravenous therapy via peripheral mid-long catheters.Methods:Ninety patients receiving intravenous therapy via mid-long catheters in the hospital from March 2024 to March 2025 were selected and randomly divided into a control group and an observation group,with 45 patients in each group.The control group received routine nursing intervention,while the observation group received clinical nursing pathway intervention.The nursing risk events,catheter indwelling time,and nursing satisfaction were evaluated in both groups.Results:The observation group had a shorter catheter indwelling time,fewer risk events during intravenous therapy(total incidence rate of 2.22%),and higher nursing satisfaction.Additionally,negative emotional feedback was reduced,and the SAS score(31.02±1.12)was lower in the observation group compared to the control group.There were significant differences between the two groups in all indicators(P<0.05).Conclusion:Applying the clinical nursing pathway during intravenous therapy via peripheral mid-long catheters can help ensure infusion safety,improve unstable emotional states,and promote high-quality service standards.
基金Supported by the National Natural Science Foundation of China under Grant No.（50579023）.
文摘The cylindrical shell is one of the main structural parts in ocean engineering structures.These cylinders are mostly of medium length,which means that the radius of the cross section is significantly smaller than the length of the cylindrical shell.From the viewpoint of the shell theory,they belong to the mid-long cylindrical shell category.To solve mechanical problems on this kind of structure,especially a cracked cylindrical shell,analysis based on shell theory is necessary.At present the generally used solving system for the mid-long cylindrical shell is too complicated,difficult to solve,and inapplicable to engineering.This paper introduced the Sanders' mid-long cylindrical shell theory which reduces the difficulty of the solution process,and will be suitable for solving problems with complicated boundary conditions.On this basis,the engineering applications of this theory were discussed in conjunction with the problem of a mid-long cylindrical shell having a circumferential crack.The solution process is simple,and the closed form solution can usually be found.In practical engineering applications,it gives satisfactory precision.
文摘The earthquakes with Ms≥6.0 are often gathered into belts or clusters and are roughly consistent with tectonic structure trends in the Sichuan-Yunnan (Chuan-Dian) region. The middle south part(98°-106°E, 21°-34°N) of South-North Seismic Zone can be zoned into seven small areas. There all were strong quakes with M_s≥7.0 historically in each small area. Ten earthquakes with M_s≥7.0 have occurred in this region since 1970 and they appeared in five small areas respectively. The relationships between occurrence-time and cumulative frequencies of strong quakes in these five areas are shown to be an exponential distribution or power function. By examining the inner coincidence it is indicated that these relationships are of definite significance to mid-long term macroseismic prediction of each area.
文摘Objective To verify the efficacy and safety of conversion from cyclosporine ( CsA) to tacrolimus ( Tac) in renal transplant recipients. Methods The clinical data of conversion from CsA to Tac in renal transplant recipients were retrospectively analyzed. In 97 petients undergoing kidney transplantation,there were 62 cases of chronic al-
文摘在中长期水火发电调度中考虑检修计划的影响是目前中长期水火发电调度面临的难题。利用现代整数代数建模技术，建立发电计划和检修计划协调优化的多场景调度模型。在该模型中，鉴于设备检修计划的连续性，在预测场景树的基础上，将场景节点划分成不同的场景，通过节点和场景关联矩阵，实现多场景下设备检修模型的构建。同时，鉴于中长期调度计划中发电计划和检修计划对时段间隔要求的不同，分别设置电量相关节点和电力相关节点，实现中长期发电计划和检修计划的协调。上述模型是一个大规模混合整数线性规划（mixed integer linear programming，MILP）问题，采用商用MILP求解器进行求解。大规模实际水火电系统的实例分析结果表明，所提模型和方法是可行、有效的。
