目的在肿瘤患者群体中评价中文版患者报告结局测量信息系统(patient-reported outcomes measurement information system,PROMIS)疼痛干扰4a简表的测量学指标。方法于2021年12月-2022年1月,使用PROMIS疼痛干扰4a简表在复旦大学附属肿瘤...目的在肿瘤患者群体中评价中文版患者报告结局测量信息系统(patient-reported outcomes measurement information system,PROMIS)疼痛干扰4a简表的测量学指标。方法于2021年12月-2022年1月,使用PROMIS疼痛干扰4a简表在复旦大学附属肿瘤医院采用方便抽样法调研收集肿瘤患者资料,采用Mplus 8.3软件及SPSS 20.0软件分析量表及条目的地板效应、天花板效应;分析量表的结构效度、效标关联效度和信度等测量性能;并初步进行量表的测量等价性检验。结果最终纳入240例肿瘤患者。中文版PROMIS疼痛干扰4a简表在肿瘤患者群体中的Cronbach′sα系数为0.961,信度较好。验证性因子分析提示模型拟合较好。量表评分与中文版欧洲癌症研究中心(EORTC)生命品质评估量表(Quality of life questionnaire.core 30,QLO-C30)(v3.0)疼痛维度呈显著正相关(P<0.01),效标关联效度较好。癌症早期和晚期患者疼痛干扰得分差异具有统计学意义(P<0.05),提示已知组别效度良好。量表条目评分最低1分的患者比例大于20%,提示存在明显的地板效应。结论中文版PROMIS疼痛干扰4a简表在肿瘤患者中的测量学性能总体较好,适用于国内肿瘤患者人群。但今后还需对部分性能进一步检验和调试。展开更多
It’s very complicated to calculate and analyze the wave and current loads on naval architectures since the sea condition is uncertain and complicated and the determinants vary from different form types and dimensions...It’s very complicated to calculate and analyze the wave and current loads on naval architectures since the sea condition is uncertain and complicated and the determinants vary from different form types and dimensions. For calculating the wave and current loads on upright small-long-size pipe, the Morrison equation is practical and applied. Jacket platform is a kind of offshore space frame structure comprised of lots of poles that are circular cylinders with small diameter and in the oblique status relative to seabed. In this paper, based on Morrison equation, the specific method and procedure calculating the wave and current loads on launching jacket are given and applied on a typical launching jacket. The instance shows that the method and procedure are convenient and make the calculation and analysis in good agreement with actual launching.展开更多
Measuring the internal velocity of debris flows is very important for debris flow dynamics research and designing debris flow control works. However, there is no appropriate method for measuring the internal velocity ...Measuring the internal velocity of debris flows is very important for debris flow dynamics research and designing debris flow control works. However, there is no appropriate method for measuring the internal velocity because of the destructive power of debris flow process. In this paper, we address this problem by using the relationship between velocity and kinetic pressure, as described by surface velocity and surface kinetic pressure data. Kinetic pressure is the difference of impact pressure and static pressure. The former is detected by force sensors installed in the flow direction at the sampling section. Observations show that static pressure can be computed using the formula for static water pressure by simply substituting water density for debris flow density. We describe the relationship between surface velocity and surface kinetic pressure using data from seven laboratory flume experiments. It is consistent with the relationship for single phase flow, which is the measurement principle of the Pitot tube.展开更多
Mechanics effect of laser thermal stress is a new manufacturing technology, which uses thermal stress by high power laser acted on the surface of metal material to produce stress field. The technologies such as sheet ...Mechanics effect of laser thermal stress is a new manufacturing technology, which uses thermal stress by high power laser acted on the surface of metal material to produce stress field. The technologies such as sheet metal formation by laser thermal stress, measurement by laser scratching and measurement by XRD (X-ray diffraction) are formed based on mechanics effects of laser thermal stress. The mechanisms of sheet metal formation by laser thermal stress, measurement by laser scratching and measurement by XRD are analyzed, and the theory of photo-mechanics manufacturing and detecting technologies based on laser thermal stress is originally put forward, whose experiment is primitively researched, and the manufacturing theory by mechanics effects of laser thermal stress is established.展开更多
文摘目的在肿瘤患者群体中评价中文版患者报告结局测量信息系统(patient-reported outcomes measurement information system,PROMIS)疼痛干扰4a简表的测量学指标。方法于2021年12月-2022年1月,使用PROMIS疼痛干扰4a简表在复旦大学附属肿瘤医院采用方便抽样法调研收集肿瘤患者资料,采用Mplus 8.3软件及SPSS 20.0软件分析量表及条目的地板效应、天花板效应;分析量表的结构效度、效标关联效度和信度等测量性能;并初步进行量表的测量等价性检验。结果最终纳入240例肿瘤患者。中文版PROMIS疼痛干扰4a简表在肿瘤患者群体中的Cronbach′sα系数为0.961,信度较好。验证性因子分析提示模型拟合较好。量表评分与中文版欧洲癌症研究中心(EORTC)生命品质评估量表(Quality of life questionnaire.core 30,QLO-C30)(v3.0)疼痛维度呈显著正相关(P<0.01),效标关联效度较好。癌症早期和晚期患者疼痛干扰得分差异具有统计学意义(P<0.05),提示已知组别效度良好。量表条目评分最低1分的患者比例大于20%,提示存在明显的地板效应。结论中文版PROMIS疼痛干扰4a简表在肿瘤患者中的测量学性能总体较好,适用于国内肿瘤患者人群。但今后还需对部分性能进一步检验和调试。
基金Supported by Item of Doctor Subject of Colleges and University (No.2000014125) and the Education Office of Liaoning Province (No.05l091).
文摘It’s very complicated to calculate and analyze the wave and current loads on naval architectures since the sea condition is uncertain and complicated and the determinants vary from different form types and dimensions. For calculating the wave and current loads on upright small-long-size pipe, the Morrison equation is practical and applied. Jacket platform is a kind of offshore space frame structure comprised of lots of poles that are circular cylinders with small diameter and in the oblique status relative to seabed. In this paper, based on Morrison equation, the specific method and procedure calculating the wave and current loads on launching jacket are given and applied on a typical launching jacket. The instance shows that the method and procedure are convenient and make the calculation and analysis in good agreement with actual launching.
基金supported by the National Natural Science Foundation of China (Grant No. 40771026)the NSFC-RFBR project (Grant No. 40911120089, 08-05-92206 NSFCa)
文摘Measuring the internal velocity of debris flows is very important for debris flow dynamics research and designing debris flow control works. However, there is no appropriate method for measuring the internal velocity because of the destructive power of debris flow process. In this paper, we address this problem by using the relationship between velocity and kinetic pressure, as described by surface velocity and surface kinetic pressure data. Kinetic pressure is the difference of impact pressure and static pressure. The former is detected by force sensors installed in the flow direction at the sampling section. Observations show that static pressure can be computed using the formula for static water pressure by simply substituting water density for debris flow density. We describe the relationship between surface velocity and surface kinetic pressure using data from seven laboratory flume experiments. It is consistent with the relationship for single phase flow, which is the measurement principle of the Pitot tube.
基金this research from the Scientific Research Fund of Jiangsu Polytechnic University(GrantNo.ZMF07020042)Fund of Jiangsu ProvincialKey Laboratory for Science and Technology of Photo-manufacroring (Grant No.GZ-1-02)the NaturalScience Foundation of the Jiangsu Higher EducationInstitutions of China( Grant No. 08KJB430002 ) is gratefully acknowledged.
文摘Mechanics effect of laser thermal stress is a new manufacturing technology, which uses thermal stress by high power laser acted on the surface of metal material to produce stress field. The technologies such as sheet metal formation by laser thermal stress, measurement by laser scratching and measurement by XRD (X-ray diffraction) are formed based on mechanics effects of laser thermal stress. The mechanisms of sheet metal formation by laser thermal stress, measurement by laser scratching and measurement by XRD are analyzed, and the theory of photo-mechanics manufacturing and detecting technologies based on laser thermal stress is originally put forward, whose experiment is primitively researched, and the manufacturing theory by mechanics effects of laser thermal stress is established.
