Calculating mean number and standard error or standard deviation by normal calculation method has the correct result as using Microsoft – Excel. Applying Summary Statistics in Descriptive Statistics, we get mean number, standard error, standard deviation and many other results including Sample Variance. If two variances of two samples are the same, we use T- test method. Therefore, we have concrete value of p, which can be use to identify higher or lower expressed value
Statistics ; Computers

This paper is maintenance of four kinds of failures of Carestream GC1.5 the workstation used several years to summarize, workstation software, change the host, burn, workstations transmission, and four kinds of failures of the specific case of itemized elimination steps are introduced.
Computers ; standards ; Maintenance ; Software

62 people (124 eyes) age from 21 to 49 (35 males, 27 females) are divided into 2 groups: in the first group 18 objects (36 eyes) with conjunctivitis, in the second group 44 objects (88 eyes) without conjunctivitis. All objects have taken Shirmer test (I and II), BUT, test of Rose-bengal and fluorescein. All are applied with Sanlein (Santen Agency). And those tests are measured after 1 and 3 months. Results: The Shirmer I and II, and BUT in the group 2 is higher than in the group 1, though BUT of both groups is at under normal level. Test of Rose-bengal 1 and 2 in group 1 is higher than in group 2. The intergrity of epithelial cells is also changed. Tear secretion of both groups at normal physiological level. Sanlein has good effect, partially improves tear indicator
Bodily Secretions ; Cornea ; Computers

Participants in this study were 98 bank staffs who were 20-40 years old and had worked with computer for 2 to 10 years at Vietcombank and Incombank. The results showed that the labor condition of bank staffs have been not good: working places are cramped, in-door CO2 level is high, light condition and working site design is not good, noisy. Rate of staffs who have complaints about bone-muscular problems and visual symptoms after a labor shift is high. Findings of visiotest showed that working with computer have effects on visual function as decrease in power of vision and increase in the time to see stereo images
Computers ; Delivery of Health Care

A study on the working environment, ergonomics(problems related with working place, skin, stress, reproductive health..) for computer users has shown that the causes of skin disorders were unknown. There was no evidence of the relation between the reproductive problems and computer using. The rate of vision disturbs in computer users was much higher than this in others. The causes of the bone disorders in computer users were unknown. Properties and level of stress depended on many factors. This paper also regarded to the close room syndrome and impacts of the short frequent electromagnetism
Computers ; Delivery of Health Care

Aiming at the current situation of high cost, huge volume, complex operation and difficulty in real application of pulse analyzer, this study designs and implements a portable pulse detection system based on IoT. The design utilizes Raspberry Pi 3B+, STM32 series MCU and cloud server to collect, store, display and recognize pulse signals at CUN, GUAN and CHI. The system is small in size and low in cost, which can be connected with cloud server through network to make full use of resources. The experimental results show that the recognition accuracy of the main feature points of the pulse signal by the portable pulse analyzer is higher than 97%, which has a broad prospect of development and application.
Computers ; Heart Rate

Digital potentiometers have been used in medical instruments. This paper describes the structure and principle of a digital potentiometer, especially its interfacing with a single chip processor and its programming.
Computers ; Equipment Design ; Equipment and Supplies

Aiming at the low efficiency and low quality detection level of the manual infusion set, a gas detection system for infusion set based on STM32 single-chip microcomputer was designed. The detection system includes hardware system design and software system design. The hardware system is based on the STM32F103 single-chip microcomputer. It mainly designs the gas pressure sensor acquisition circuit and the multi-way solenoid valve control circuit. The software system uses a C ++ real-time operating system to ensure system monitoring's real-time performance and validity. Test data is transmitted to the upper computer and displayed via USB serial communication. The experiment proves that the infusion set gas detection system can perform gas detection on the infusion set. The system has the characteristics of stability and high accuracy. The relative error of the experimental measurement is within ±5%, and the detection efficiency is better than manual detection.
Computers ; Equipment Design ; Microcomputers ; Software

Chlorine ; Computer Simulation ; Computers, Analog ; Diffusion ; Software

Computers ; Klebsiella ; isolation & purification ; Staphylococcus ; isolation & purification