Characteristics of Italian art restoration firms and factors influencing their adoption of laser technology

Given the limited number of studies on this topic, the aim of this study is to better understand the characteristics of art restoration firms in Italy, with particular reference to their use of innovative technologies such as laser technology. The paper is supported by a survey conducted in a sample of 100 companies. The factors that have led firms to adopt or resist the adoption of the laser were identified and analysed. The results show that the main determinants of laser adoption are collaborative activities between the firms and universities and specific requests made by public institutions to use this technology.

提高激光测距精度方法的研究

为了提高激光测距精度,采用理论分析的方法,提出了影响激光测距精度的主要因子,对现有的主要的测距方式脉冲和相位测距方式进行研究,并分析现有已经提出的测量精度方案,总结这些方案优缺点,这样有助于进一步提高激光测距的精度。     

周期混合信号和色关联噪声联合驱动下的单模激光随机共振

研究周期混合信号和色关联噪声联合驱动下的单模激光系统的随机共振现象,运用线性近似的方法得到输出信号光强的功率谱和信噪比.研究表明：信噪比都随泵噪声和量子噪声出现传统的随机共振现象;并讨论噪声的互关联时间和两信号的频率、振幅对信噪比的影响.     

选择性激光烧结零件的后处理

用激光快速成型设备间接烧结金属粉末,由于受设备激光功率的限制,制造出零件的密度和强度都很低,为改善这种情况,文章进行了一系列的试验.试验结果表明:在普通的粉末冶金烧结炉内,原型件通过两次烧结——熔渗铜后序处理即可获得高的强度、密度,可直接用作放电加工工具的电极.该方法为金属零件与电加工电极的快速制造开辟了新途径.     

The effect of hepatic blood inflow occlusion on hepatic cancer treated with diode-laser thermocoagulation

INTRODUCTION In recent years, thermo-ablation of liver cancerhas received increasing attention. Generally this canbe achieved by radiofrequency (RF) or Nd:YAG laser(Tanabe et al., 2004; Nikfarjam and Christophi, 2003;Erce and Parks, 2003). Of great importance to themethod’s success is the size of the induced coagula-tion necrosis; the lesion size largely depends on thetemperature distribution in the target volume, whichis determined partly by the blood perfusion in thetarget or…     

中国区域产业链创新能力评价体系构建及实证——以激光产业为例

从创新资源投入、创新成果产出、产业关联及结构、科技转化能力、创新环境支撑5个维度，筛选并构建包含34个末端指标的评价体系。以中国激光产业2019年指标数据为样本，运用层次分析（AHP）-熵权法模型，对华东、华南、华北、华中、西南、西北、东北七大地区的激光产业链创新能力进行评价。结果表明，中国激光产业链创新能力从区域分布上呈现出东强西弱、南强北弱的局面。其中，华东地区、华南地区的激光产业链创新能力较强；华中地区有较好的政策环境支撑，但在创新资源投入、创新成果产出方面仍有待加强；华北地区整体集中度较低；东北地区、西北地区、西南地区的激光产业链创新能力较弱。