Toward the development of a service provider sociality scale and its relationship to customer satisfaction and loyalty

This study assessed the dimensional structure of the Service Provider Sociality Scale, then determined whether service providers' use of different sociality dimensions predicts customer satisfaction and, in turn, whether customer satisfaction predicts loyalty. A survey of 256 undergraduate student “customers” revealed two significant dimensions of sociality: Personal Connection and Courteous Expressions. These dimensions explained 74% of the variance in customer satisfaction, but only Courteous Expressions accounted for significant unique variance in satisfaction. Satisfaction, in turn, strongly predicted loyalty.     

Investigation of the dynamic characteristics of a dual rotor system and its start-up simulation based on finite element method

Recently, the finite element method (FEM) has been commonly applied in the engineering analysis of rotor dynamics. Gyroscopic moments, rotary inertia, transverse shear deformation and gravity can be included in computational models of rotor-bearing systems. In this paper, a finite element model and its solution method are presented for the calculation of the dynamics of dual rotor systems. A typical structure with two rotor shafts is discussed and the procedure for obtaining the coupling motion equations of the subsystems is illustrated. A computer program is developed to solve critical speeds and to simulate the transient motion. The influence of gyroscopic moments on co-rotation and counter-rotation is analyzed, and the effect of the speed ratio on critical speed is studied. The dynamic characteristics under different conditions of increasing speed during start-up are demonstrated by comparison with transient nodal displacements. The presented model provides a complete foundation for further investigation of the dynamics of dual rotor systems.     

康德善良意志的先天性原则

康德善良意志的先天性起源于他的理性范畴论,这是个很奇怪的命题,既然是先天的,然而它又是可以分析的,那么康德的这种先天性原则的分析法是否就能证明其实践理性的完全合法性及其在现实的实践中的法则作用?这是需要加以认真探讨的话题。应该说,康德对休谟怀疑论的综合批判并没有从根本上消除道德与伦理的二元悖论,更没有在根本上澄清"是"与"应该"的经验与规范的二律背反,这种无休止的争论的谜团构成了康德自身的批判理论的永恒元素。但反过来说,善良意志的这种无法解决的矛盾,恰恰是其所具有的内在批判性所在,唯有如此,在其遭遇现实经验时才能具备自身的理论张力。     

瞬变电磁探测技术在白象山铁矿的应用

在白象山铁矿-470m巷道利用瞬变电磁探测技术探测前方岩体的含导水性,为防治水工作提供靶区,在提高掘进速度的同时最大限度的降低水害事故发生的机率,保障开拓巷道安全掘进。     

Numerical estimation of two convective boundary conditions of a two-dimensional rectangular fin

A simultaneous estimation of two convective boundary conditions problem of a two-dimensional rectangular fin is proposed by numerical approach. The aim is to estimate the evolution of the distributions of the unknown heat transfer coefficients from the transient temperature histories taken with several sensors inside a two-dimensional fin. The estimation algorithm of this inverse heat conduction problem is based on the iterative regularization method and on the conjugate gradient method. An optimal choice of the vector of the descent parameters is used in this study and shows an increase in the convergence rate. The effects of some parameters (sensor number, position, measurement errors) on the inverse solutions are discussed.     

Criss-cross heart three-dimensional printed models in medical education: A multicenter study on their value as a supporting tool to conventional imaging

The utility of three-dimensional (3D) printed models for medical education in complex congenital heart disease (CHD) is sparse and limited. The purpose of this study was to evaluate the utility of 3D printed models for medical education in criss-cross hearts covering a wide range of participants with different levels of knowledge and experience, from medical students, clinical fellows up to senior medical personnel. Study participants were enrolled from four dedicated imaging workshops developed between 2016 and 2019. The study design was a non-randomized cross-over study to evaluate 127 participants' level of understanding of the criss-cross heart anatomy. This was evaluated using the scores obtained following teaching with conventional images (echocardiography and magnetic resonance imaging) versus a 3D printed model learning approach. A significant improvement in anatomical knowledge of criss-cross heart anatomy was observed when comparing conventional imaging test scores to 3D printed model tests [76.9% (61.5%–87.8%) vs. 84.6% (76.9%–96.2%), P < 0.001]. The increase in the questionnaire marks was statistically significant across all academic groups (consultants in pediatric cardiology, fellows in pediatric cardiology, and medical students). Ninety-four percent (120) and 95.2% (121) of the participants agreed or strongly agreed, respectively, that 3D models helped them to better understand the medical images. Participants scored their overall satisfaction with the 3D printed models as 9.1 out of 10 points. In complex CHD such as criss-cross hearts, 3D printed replicas improve the understanding of cardiovascular anatomy. They enhanced the teaching experience especially when approaching medical students.     

测井法探测剩余油方法研究

本文简单介绍了探测剩余油饱和度和分布的方法,对比各自方法的优缺点,最终选择测井方法探测剩余油。从理论出发建立了基于瞬变电磁法的三层柱状介质模型,通过对模型理论的推导及求解,计算出了地层的感应电动势。并通过软件的仿真,直观地说明了发射电流、发射线圈匝数、收发距对感应电动势的影响,验证了此方法探测剩余油的可行性。     

先天视力残疾学生的人物画特征研究

采用作品分析的方法,对174名7-25岁先天视力残疾学生的人物画进行研究后发现:借助可以提供触觉反馈的绘画工具,全盲、功能性盲、低视力学生均能有效参与绘画活动且具有绘画能力的发展潜力;随着年龄增长,先天视力残疾学生的人物画的发展先后经历涂鸦期、过渡期、常规人物期三个主要阶段,符合儿童人物画发展的一般方向,但发展较缓慢、发展时间相对延长.     

山阴县神经管畸形流行特征及因素分析

目的探索神经管畸形在本地的流行特征及影响因素,以及开展"削峰"工程的成就.方法对1987-2006年的出生缺陷监测资料的相关数据,采用χ2检验进行统计分析.结果县乡两级医疗机构在1987-2006年间畸形发生率为(4.81±0.65)‰.结论①开展"削峰"工程,采取口服斯利安、进行B超早期诊断、实施孕产妇系统管理等措施,可使神经管畸形的形成和出生机会减少;②神经管畸形的发生率城镇低于农村,男性低于女性;③孕早期病毒感染的胎儿较易发生神经管畸形,孕妇被动吸烟是导致胎儿神经管畸形的原因之一.     

先天畸形性新生儿听力筛查结果的临床分析

目的:针对先天畸形性的新生儿听力的效果进行筛查进行分析,研究听力损失的原因是否包含先天畸形这个因素。方法:采用2010年1月到2012年12月期间在儿童医院的新生儿中不属于国家所颁布的听力高危人群,但是具有先天性畸形的患者,将他们作为新生儿的研究对象,主要选取的人数为417例。对照组的选择是该儿童医院正常的新生儿,共计794例。选取的方法为了避免偶然性或是其他因素的限制,现对自动听性脑干发应(AABR)以及畸变产物耳声发射(DPOAE)两种方法进行复合,希望达到良好的效果。结果:对于听力筛选而言,先天畸形性新生儿比正常的新生儿要弱,他们病发听力障碍的几率更大;此外,DPOAE法和AABR法相比,筛选新生儿听力具有一定的局限性,比较容易出现失误或是误诊,针对于听力障碍儿童的筛选不利,所以将两种方式进行联合,更合适筛查高危新生儿的听力状况。