The author has made tests for an artificial head transfer system which is modelled on a Chinese male on its main physical behaviour such as frequency responses, frequency response differences between the front and the...The author has made tests for an artificial head transfer system which is modelled on a Chinese male on its main physical behaviour such as frequency responses, frequency response differences between the front and the rear incidences, as will as on its important hearing behaviour such as localization, the perception of distance and room dimensions. The results verify that this kind of artificial head transfer system can be used as one of effective tools of acoustic evaluation researches for halls.展开更多
Objective: to analyze the effect of total hip replacement and artificial femoral head replacement in the treatment of elderly femoral neck fracture. Methods: Fifty cases of elderly femoral neck fracture from January 2...Objective: to analyze the effect of total hip replacement and artificial femoral head replacement in the treatment of elderly femoral neck fracture. Methods: Fifty cases of elderly femoral neck fracture from January 2018 to January 2019 in our hospital were selected. Patients were randomly divided into two groups with 25 cases in each group by random number table. Patients in the femoral head group were treated with artificial femoral head replacement, while patients in the total hip group were treated with total hip replacement. The drainage volume, bleeding, total operation time, evaluation scores of QOL scale before and after treatment, Harris hip joint status score and complication rate were compared between the two groups. Results: the operation time, bleeding and drainage volume of the total hip group were higher than those of the femoral head group, P < 0.05. There was no significant difference in complications between the two groups (P > 0.05). After treatment, evaluation scores of QOL scale and Harris hip joint status score of the patients were higher than those of the femoral head group, P > 0.05. Conclusion: comparing total hip replacement and artificial femoral head replacement in the treatment of elderly femoral neck fracture, the trauma of artificial femoral head replacement is relatively simple and less bleeding, but in the long term, total hip replacement can improve the hip joint function and quality of life of patients better.展开更多
Based on auditory peripheral simulation model, a new Sound Quality Objective Evaluation (SQOE) method is presented,which can be used to model and analyze the impacts of head, shoulder and other parts of human body on ...Based on auditory peripheral simulation model, a new Sound Quality Objective Evaluation (SQOE) method is presented,which can be used to model and analyze the impacts of head, shoulder and other parts of human body on sound wave trans-mission.This method employs the artificial head technique, in which the head related transfer function was taken into account tothe outer ear simulation phase.First, a bionic artificial head was designed as the outer ear model with considering the outersound field in view of theory and physical explanations.Then the auditory peripheral simulation model was built, which mimicsthe physiological functions of the human hearing, simulating the acoustic signal transfer process and conversion mechanismsfrom the free field to the peripheral auditory system.Finally, performance comparison was made between the proposed SQOEmethod and ArtemiS software, and the verifications of subjective and objective related analysis were made.Results show thatthe proposed method was economical, simple, and with good evaluation quality.展开更多
基金The project is supported by National Science Foundation of China
文摘The author has made tests for an artificial head transfer system which is modelled on a Chinese male on its main physical behaviour such as frequency responses, frequency response differences between the front and the rear incidences, as will as on its important hearing behaviour such as localization, the perception of distance and room dimensions. The results verify that this kind of artificial head transfer system can be used as one of effective tools of acoustic evaluation researches for halls.
文摘Objective: to analyze the effect of total hip replacement and artificial femoral head replacement in the treatment of elderly femoral neck fracture. Methods: Fifty cases of elderly femoral neck fracture from January 2018 to January 2019 in our hospital were selected. Patients were randomly divided into two groups with 25 cases in each group by random number table. Patients in the femoral head group were treated with artificial femoral head replacement, while patients in the total hip group were treated with total hip replacement. The drainage volume, bleeding, total operation time, evaluation scores of QOL scale before and after treatment, Harris hip joint status score and complication rate were compared between the two groups. Results: the operation time, bleeding and drainage volume of the total hip group were higher than those of the femoral head group, P < 0.05. There was no significant difference in complications between the two groups (P > 0.05). After treatment, evaluation scores of QOL scale and Harris hip joint status score of the patients were higher than those of the femoral head group, P > 0.05. Conclusion: comparing total hip replacement and artificial femoral head replacement in the treatment of elderly femoral neck fracture, the trauma of artificial femoral head replacement is relatively simple and less bleeding, but in the long term, total hip replacement can improve the hip joint function and quality of life of patients better.
文摘Based on auditory peripheral simulation model, a new Sound Quality Objective Evaluation (SQOE) method is presented,which can be used to model and analyze the impacts of head, shoulder and other parts of human body on sound wave trans-mission.This method employs the artificial head technique, in which the head related transfer function was taken into account tothe outer ear simulation phase.First, a bionic artificial head was designed as the outer ear model with considering the outersound field in view of theory and physical explanations.Then the auditory peripheral simulation model was built, which mimicsthe physiological functions of the human hearing, simulating the acoustic signal transfer process and conversion mechanismsfrom the free field to the peripheral auditory system.Finally, performance comparison was made between the proposed SQOEmethod and ArtemiS software, and the verifications of subjective and objective related analysis were made.Results show thatthe proposed method was economical, simple, and with good evaluation quality.
