目的:探讨医学影像显示器的校准标准与方法,对其进行质量检测。方法 :分析医学影像显示器的相关标准、概念以及由医学数字成像和通信(digital imaging and communications in medicine,DICOM)标准定义的灰阶标准显示函数(grayscale stan...目的:探讨医学影像显示器的校准标准与方法,对其进行质量检测。方法 :分析医学影像显示器的相关标准、概念以及由医学数字成像和通信(digital imaging and communications in medicine,DICOM)标准定义的灰阶标准显示函数(grayscale standard display function,GSDF);以DICOM标准第14部分关于医学影像显示的内容为基础,使用DICOM GSDF标准函数,对医学影像显示器进行校准。结果:提出查找表与亮度计是医学影像显示器DICOM GSDF校准时不可缺少的工具,可以采用手动、自动及网络3种模式进行校准。结论:医学影像显示器的校准与质控应作为一项常规工作,只有对其进行DICOM GSDF校准后,才能用于临床诊断工作。展开更多
We introduce a modification of Kantorovich-type operators in polynomial weighted spaces of functions. Then we study some approximation properties of these operators. We give some inequalities for these operators by me...We introduce a modification of Kantorovich-type operators in polynomial weighted spaces of functions. Then we study some approximation properties of these operators. We give some inequalities for these operators by means of the weighted modulus continuity and also obtain a Voronovskaya-type theorem. Furthermore, in our paper show that the operators give better degree of approximation of functions belonging to weighted spaces than classical Szaisz- Kantorovich operators.展开更多
In paper [1],it was shown that an explicit expression of the cardinal basis functions for two-point Hermite interpolation. This paper will show the explicit expression of Hermite interpolation under the Ball basis.
In clinic＇s appointment scheduling system no-shows have been a significant and confirmed issue with a bad influence on patient accessibility and clinic efficiency. The problem of walk-in has often been seen as the op...In clinic＇s appointment scheduling system no-shows have been a significant and confirmed issue with a bad influence on patient accessibility and clinic efficiency. The problem of walk-in has often been seen as the opposite of no-show problem. In this work we revisit a walk-in admitting based approach to mitigate the bad influence of no-show without overbooking. First we establish a model which utilizes marginal benefit objective function to balance the interests of the clinic, the patient and the doctor, we prove that no-show and walk-in cancels out each other straightly has a bad property. Then we propose a new rule which is an extension of the well-known Bailey - Welch rule, the simulation results show that our rule has an improvement comparing with the common rule that cancels them out straightly.展开更多
文摘目的:探讨医学影像显示器的校准标准与方法,对其进行质量检测。方法 :分析医学影像显示器的相关标准、概念以及由医学数字成像和通信(digital imaging and communications in medicine,DICOM)标准定义的灰阶标准显示函数(grayscale standard display function,GSDF);以DICOM标准第14部分关于医学影像显示的内容为基础,使用DICOM GSDF标准函数,对医学影像显示器进行校准。结果:提出查找表与亮度计是医学影像显示器DICOM GSDF校准时不可缺少的工具,可以采用手动、自动及网络3种模式进行校准。结论:医学影像显示器的校准与质控应作为一项常规工作,只有对其进行DICOM GSDF校准后,才能用于临床诊断工作。
文摘We introduce a modification of Kantorovich-type operators in polynomial weighted spaces of functions. Then we study some approximation properties of these operators. We give some inequalities for these operators by means of the weighted modulus continuity and also obtain a Voronovskaya-type theorem. Furthermore, in our paper show that the operators give better degree of approximation of functions belonging to weighted spaces than classical Szaisz- Kantorovich operators.
文摘In paper [1],it was shown that an explicit expression of the cardinal basis functions for two-point Hermite interpolation. This paper will show the explicit expression of Hermite interpolation under the Ball basis.
文摘In clinic＇s appointment scheduling system no-shows have been a significant and confirmed issue with a bad influence on patient accessibility and clinic efficiency. The problem of walk-in has often been seen as the opposite of no-show problem. In this work we revisit a walk-in admitting based approach to mitigate the bad influence of no-show without overbooking. First we establish a model which utilizes marginal benefit objective function to balance the interests of the clinic, the patient and the doctor, we prove that no-show and walk-in cancels out each other straightly has a bad property. Then we propose a new rule which is an extension of the well-known Bailey - Welch rule, the simulation results show that our rule has an improvement comparing with the common rule that cancels them out straightly.
