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The study of vascular mechanics is important. The purpose of this paper is to present an apparatus to measure the biomechanical properties of blood vessels, which can be…
The study of vascular mechanics is important. The purpose of this paper is to present an apparatus to measure the biomechanical properties of blood vessels, which can be used for tensile test and fatigue test.
This equipment consists of a mechanical test platform, a hardware circuit based on FPGA and control software. The torque generated by stepper motor is converted to axial force by ball screw, and the vascular specimen is stretched axially. The tension is measured by a load cell, and the displacement is recorded by a grating displacement sensor.
According to the results of calibration experiment and stability experiment, the linearity error of the system is 0.251, the hysteresis error is 0.047, the repeatability error is 0.185, the comprehensive error is 0.315 and the standard deviation of the output is less than 0.01 N. A test of animal vascular mechanical properties was carried out, and the results are consistent with the theory.
This apparatus is designed to measure biomechanical properties of blood vessels, and the results of experiments indicate that it is stable and reliable. This work is valuable for studying vascular disease and testing artificial blood vessels.
The purpose of this paper is to examine the interplay of skill-enhancing human resources practices, customer orientation (CO) and tourism small- and medium-sized…
The purpose of this paper is to examine the interplay of skill-enhancing human resources practices, customer orientation (CO) and tourism small- and medium-sized enterprises (SMEs) performance indicators.
Data for 194 valid cases are gathered through face-to-face techniques in Albanian tourism SMEs. Structural equation modeling is implemented to analyze data and test the hypothesis proposed.
Overall, both skill-enhancing human resources (HR) practices (i.e. recruitment/selection and training) are not associated with SMEs performance. Results suggest that using HR selection/recruitment practices are not associated to SME’s CO. Contrary, implementing skill-enhancing HR training practices is significant for SMEs strategy to focus and address customers’ wants and needs. Finally, it was found that the CO mediates the relationship between skill-enhancing HR training practices and performance, but this was not true on the skill-enhancing HR recruitment/selection practices-performance relationship.
This study makes contributions by further informing the debate about the direct and indirect link between skill-enhancing HR practices and performance. Additionally, it examines the precise role of the skill-enhancing HR practice on SMEs’ culture and or strategy to create value for customers.