The Chinese Recorder and Missionary Journal is one of the most valued English literature in China’s history of Christianity and the key publications of missionaries from the second half of the 19th Century to the fir...The Chinese Recorder and Missionary Journal is one of the most valued English literature in China’s history of Christianity and the key publications of missionaries from the second half of the 19th Century to the first half of the 20th Century.The advertisements in it have not been properly stressed by the academic world,most of which are even deleted in the bound volumes.This paper aims to give a preliminary study on the advertisements in Chinese Recorder and Missionary Journal,comparing and analyzing advertisers,slogans and text structures and appeal methods of advertisements of shipping,banking,schools and book introduction in Chinese Recorder and Missionary Journal,thus demonstrating its significance in China’s modern advertising industry and Sino-western commercial trade and cultural exchange.展开更多
In musical instruments, the geometric design and material features of the instrument are the most important factors that determine the sound characteristics of the instrument. Traditional replication and experiment-ba...In musical instruments, the geometric design and material features of the instrument are the most important factors that determine the sound characteristics of the instrument. Traditional replication and experiment-based handcrafting methods are predominant in the production of Turkish Folk Music wind instruments. The instrument manufacturing and standardization approaches, which include the relevant rules of physics and engineering practices, are limited purely to prototype studies for scientific research purposes. It is almost impossible to find studies on Turkish Folk Music wind instrument design and production involving computer aided design and engineering applications. In this study, an example Turkish woodwind instrument, the Turkish Treble Recorder (dilli kaval) is considered, and the air flow behaviour and acoustic (sound) power magnitudes that occur at different air flow rates are simulated in a computer environment using a Computational Fluid Dynamics (CFD) simulation technique. In the study, numerical and visual outputs related to air behaviour at different air flow rates that may be used in the instrument manufacturing phases were obtained. Acoustic power level was also measured experimentally. Simulation outputs (the acoustic power level) were compared to experimental results in order to validate the simulation results. The comparison revealed that the highest relative difference was calculated as 13.32(%). This value indicated that the simulation results were reasonably consistent with the results of the experimental measurement. Additionally, this study was constructed as a case study that may provide reference for future research studies in this field.展开更多
BACKGROUND: To invent a novel cardiopulmonary resuscitation(CPR) time point recorder to synchronously and automatically record the time and to identify its effectiveness in humans.METHODS: A CPR time point recorder wa...BACKGROUND: To invent a novel cardiopulmonary resuscitation(CPR) time point recorder to synchronously and automatically record the time and to identify its effectiveness in humans.METHODS: A CPR time point recorder was invented after the doctors were familiar with the traditional Utstein recovery registration mode and mastered the registration time points required. The progress of CPR was simulated. The standard and correct times were recorded, and the doctors performing the recovery collected the data about the times using our CPR time point recorder or the memory registration mode.RESULTS: The deviation times were 21.4±24.7 seconds for the memory group and 3.57±4.58 seconds for CPR time point recorder group. The deviation of times increased signifi cantly depending on the increase of the operation items in the memory group. A similar phenomenon was found in the timer group but with a smaller difference(P<0.01).CONCLUSION: A CPR time point recorder could reduce the deviation of operate-time, especially after a long-time operation, and for procedures with more operating items, compared with the memory mode. It was a more advantageous and accurate method for the Utstein registration.展开更多
Independent of traditional approach of satellite altimeter calibration, the feasibility of altimeter validation using tide gauge located on solitary island at open sea (TGSI) and deep-ocean bottom pressure recorder (D...Independent of traditional approach of satellite altimeter calibration, the feasibility of altimeter validation using tide gauge located on solitary island at open sea (TGSI) and deep-ocean bottom pressure recorder (DBPR) separately is initially studied. Bias of Jason-3 sea surface height (SSH) and relative SSH bias (Δbias) between Jason-2 and Jason-3 is calculated using the data of tide gauge on Harvest oil platform, tide gauge No. 1890000 and DBPR No. 21419. The standard deviations of calculated SSH bias sequence are 3.98 cm, 2.87 cm and 8.61 cm respectively, and Δbias (Jason-3—Jason-2) is -3.62± 2.17 cm , -2.58±1.97 cm and -2.60±1.30 cm respectively. Comparing to the results reported by international calibration sites, the results show that Jason-3 SSH is 3.0 cm lower than that of Jason-2, the selected DBPR is appropriate to the calculation of relative SSH bias between Jason-2 and Jason-3, but it is not suitable for calibration or validation of single satellite, TGSI is appropriate to both.展开更多
This article studies the fault recorder in power system and introduces the Comtrade format. Andituses C++ programming to read recorded fault data and adopts Fourier analysis and symmetrical component method to filter ...This article studies the fault recorder in power system and introduces the Comtrade format. Andituses C++ programming to read recorded fault data and adopts Fourier analysis and symmetrical component method to filter and extract fundamental waves. Finally the effectiveness of the data processing method introduced in this paper is verified by CAAP software.展开更多
Total Recorder是一个非常棒的超级录音软件,给它冠一个“超级”头衔,并不仅仅指它能从CD唱片或通过话筒录音、或者将不同的声音文件格式转化成WAV格式,它的绝妙之处在于既能从Internet录音、也可以将计算机中任何软件播放的音频在声卡...Total Recorder是一个非常棒的超级录音软件,给它冠一个“超级”头衔,并不仅仅指它能从CD唱片或通过话筒录音、或者将不同的声音文件格式转化成WAV格式,它的绝妙之处在于既能从Internet录音、也可以将计算机中任何软件播放的音频在声卡中截获,并录制成数字文件供以后播放,声音没有任何损失。展开更多
This paper presents a single-chip microcomputer-based short-time dynamicelectrocardiogram recorder.The recorder has the advantages of simple construction,low price and low power consumption.It can record thirty-two se...This paper presents a single-chip microcomputer-based short-time dynamicelectrocardiogram recorder.The recorder has the advantages of simple construction,low price and low power consumption.It can record thirty-two segments of the ECGsingals personally and automatically on time hourly.One segment is twenty secondslong,and the first ten seconds are prerecording.The rcorded ECG singals can be re-played by electrocardiogram machine and oscillograph for doctors to analyse and di-agnose.展开更多
基金funded by the project“Translation of and Research on Sinology Literature in English newspapers in China(19JDZD04)”by Guangdong University of Foreign Studies.
文摘The Chinese Recorder and Missionary Journal is one of the most valued English literature in China’s history of Christianity and the key publications of missionaries from the second half of the 19th Century to the first half of the 20th Century.The advertisements in it have not been properly stressed by the academic world,most of which are even deleted in the bound volumes.This paper aims to give a preliminary study on the advertisements in Chinese Recorder and Missionary Journal,comparing and analyzing advertisers,slogans and text structures and appeal methods of advertisements of shipping,banking,schools and book introduction in Chinese Recorder and Missionary Journal,thus demonstrating its significance in China’s modern advertising industry and Sino-western commercial trade and cultural exchange.
文摘In musical instruments, the geometric design and material features of the instrument are the most important factors that determine the sound characteristics of the instrument. Traditional replication and experiment-based handcrafting methods are predominant in the production of Turkish Folk Music wind instruments. The instrument manufacturing and standardization approaches, which include the relevant rules of physics and engineering practices, are limited purely to prototype studies for scientific research purposes. It is almost impossible to find studies on Turkish Folk Music wind instrument design and production involving computer aided design and engineering applications. In this study, an example Turkish woodwind instrument, the Turkish Treble Recorder (dilli kaval) is considered, and the air flow behaviour and acoustic (sound) power magnitudes that occur at different air flow rates are simulated in a computer environment using a Computational Fluid Dynamics (CFD) simulation technique. In the study, numerical and visual outputs related to air behaviour at different air flow rates that may be used in the instrument manufacturing phases were obtained. Acoustic power level was also measured experimentally. Simulation outputs (the acoustic power level) were compared to experimental results in order to validate the simulation results. The comparison revealed that the highest relative difference was calculated as 13.32(%). This value indicated that the simulation results were reasonably consistent with the results of the experimental measurement. Additionally, this study was constructed as a case study that may provide reference for future research studies in this field.
基金supported by funding from the NSFC(81671882,81471832)the Natural Science Foundation of Guangdong Province of China(2016A030311039)the Science and Technology Foundation of Guangzhou City of China(201605110853481)
文摘BACKGROUND: To invent a novel cardiopulmonary resuscitation(CPR) time point recorder to synchronously and automatically record the time and to identify its effectiveness in humans.METHODS: A CPR time point recorder was invented after the doctors were familiar with the traditional Utstein recovery registration mode and mastered the registration time points required. The progress of CPR was simulated. The standard and correct times were recorded, and the doctors performing the recovery collected the data about the times using our CPR time point recorder or the memory registration mode.RESULTS: The deviation times were 21.4±24.7 seconds for the memory group and 3.57±4.58 seconds for CPR time point recorder group. The deviation of times increased signifi cantly depending on the increase of the operation items in the memory group. A similar phenomenon was found in the timer group but with a smaller difference(P<0.01).CONCLUSION: A CPR time point recorder could reduce the deviation of operate-time, especially after a long-time operation, and for procedures with more operating items, compared with the memory mode. It was a more advantageous and accurate method for the Utstein registration.
基金National Natural Science Foundation of China(No.41774018,41674082)Foundation of State Key Laboratory of Geo-information Engineering(No.SKLGIE2018-ZZ-4)。
文摘Independent of traditional approach of satellite altimeter calibration, the feasibility of altimeter validation using tide gauge located on solitary island at open sea (TGSI) and deep-ocean bottom pressure recorder (DBPR) separately is initially studied. Bias of Jason-3 sea surface height (SSH) and relative SSH bias (Δbias) between Jason-2 and Jason-3 is calculated using the data of tide gauge on Harvest oil platform, tide gauge No. 1890000 and DBPR No. 21419. The standard deviations of calculated SSH bias sequence are 3.98 cm, 2.87 cm and 8.61 cm respectively, and Δbias (Jason-3—Jason-2) is -3.62± 2.17 cm , -2.58±1.97 cm and -2.60±1.30 cm respectively. Comparing to the results reported by international calibration sites, the results show that Jason-3 SSH is 3.0 cm lower than that of Jason-2, the selected DBPR is appropriate to the calculation of relative SSH bias between Jason-2 and Jason-3, but it is not suitable for calibration or validation of single satellite, TGSI is appropriate to both.
文摘This article studies the fault recorder in power system and introduces the Comtrade format. Andituses C++ programming to read recorded fault data and adopts Fourier analysis and symmetrical component method to filter and extract fundamental waves. Finally the effectiveness of the data processing method introduced in this paper is verified by CAAP software.
文摘This paper presents a single-chip microcomputer-based short-time dynamicelectrocardiogram recorder.The recorder has the advantages of simple construction,low price and low power consumption.It can record thirty-two segments of the ECGsingals personally and automatically on time hourly.One segment is twenty secondslong,and the first ten seconds are prerecording.The rcorded ECG singals can be re-played by electrocardiogram machine and oscillograph for doctors to analyse and di-agnose.
