Brain functional networks model the brain's ability to exchange information across different regions,aiding in the understanding of the cognitive process of human visual attention during target searching,thereby c...Brain functional networks model the brain's ability to exchange information across different regions,aiding in the understanding of the cognitive process of human visual attention during target searching,thereby contributing to the advancement of camouflage evaluation.In this study,images with various camouflage effects were presented to observers to generate electroencephalography(EEG)signals,which were then used to construct a brain functional network.The topological parameters of the network were subsequently extracted and input into a machine learning model for training.The results indicate that most of the classifiers achieved accuracy rates exceeding 70%.Specifically,the Logistic algorithm achieved an accuracy of 81.67%.Therefore,it is possible to predict target camouflage effectiveness with high accuracy without the need to calculate discovery probability.The proposed method fully considers the aspects of human visual and cognitive processes,overcomes the subjectivity of human interpretation,and achieves stable and reliable accuracy.展开更多
Objective The aim of this study was to determine the effect of successful coronary revascularisation on left ventricular diastolic function.Methods We consecutively studied the diastolic function by Doppler echocardio...Objective The aim of this study was to determine the effect of successful coronary revascularisation on left ventricular diastolic function.Methods We consecutively studied the diastolic function by Doppler echocardiography in 125 patients with one vessel disease before and 48 hours after selective coronary angioplasty. The following parameters of left ventricular diastolic function were evaluated: peak early (VE, m/s) and peak late diastolic (VA, m/s) flow velocity, E/A ratio, acceleration time (AT, ms), deceleration time (DT, ms) and isovolumetric relaxation time (IVRT, ms). Ejection fraction (EF; %) was determined and used to characterise systolic left ventricular function. Results All of the patients were initially successful treated with coronary angioplasty (residual stenosis <40% ). In 98 patients( 78.4% ) stents were used to improve an inadequate result after coronary angioplasty. Both patient groups (27 patients with coronary angioplasty and 98 patients with combined coronary angioplasty and stent implantation) showed no relevant differences concerning sex, age, atherosclerotic risk factors, exercise capacity and results of exercise electrocardiography. All patients who underwent stent implantation showed an early improvement of left ventricular diastolic function 48 hours after revascularisation. Surprisingly there was no significant short term improvement (48 hours) of diastolic function in patients with initially successful angioplasty.Conclusions We suppose that stent implantation might normalize coronary blood flow faster than that of coronary balloon angioplasty.展开更多
This paper provides a review of methods of assessing a fragmentation weapon’s effectiveness against a point target or an area target with keeping the focus on the necessity of using the Carleton damage function with ...This paper provides a review of methods of assessing a fragmentation weapon’s effectiveness against a point target or an area target with keeping the focus on the necessity of using the Carleton damage function with the correct shape factor.First,cookie-cutter damage functions are redefined to preserve the shape factor of and to have the same lethal area as the corresponding Carleton damage function.Then,closed-form solutions of the effectiveness methods are obtained by using those cookie-cutter damage functions and the Carleton damage function.Finally,the closed-form solutions are applied to calculate the probability of damaging a point target and the expected fractional damage to an area target for several attack scenarios by using cookie-cutter damage functions and the Carleton damage functions with different shape factors.The comparison of the calculation results shows that using cookie-cutter damage functions or the Carleton damage function with a wrong shape factor results in quite significant differences from using the original Carleton damage function with a correct shape factor when weapon’s delivery error deviations are less than or comparable to the lengths of the lethal area and the aim point is far from a target.The effectiveness methods improved in this paper will be useful for mission planning utilizing the precision-guided munitions in circumstances where the collateral damage should be reduced.展开更多
Germplasm effect reflects the quantitative relation between production ability of germplasm elements and yield （quality） of a certain crop, which can be shown by mathematic function, namely, germplasm effect functio...Germplasm effect reflects the quantitative relation between production ability of germplasm elements and yield （quality） of a certain crop, which can be shown by mathematic function, namely, germplasm effect function. Germplasm effect of a crop variety is an aggregation of many effective factors, and is restrained by different effective factors; constant increase of any one effect of germplasm elements would lead to law of effect decline, therefore, possible modes of transgenic crops effect function were deduced according to the law of effect decline. The possible modes of single transgenic germplasm effect function and multi-transgenic germplasm effect regression equation were discussed, and the characteristics of germplasm effect regression equation were analyzed in this paper.展开更多
目的研究醒脑开窍针法联合重复经颅磁刺激(repetitive transcranial magnetic stimulation,rTMS)治疗脑卒中患者的疗效及对生活质量、运动功能的影响。方法选择2022年2月—2023年10月在该院接受治疗的76例脑卒中患者,通过随机数字表法...目的研究醒脑开窍针法联合重复经颅磁刺激(repetitive transcranial magnetic stimulation,rTMS)治疗脑卒中患者的疗效及对生活质量、运动功能的影响。方法选择2022年2月—2023年10月在该院接受治疗的76例脑卒中患者,通过随机数字表法分为对照组和研究组,每组38例。对照组进行常规康复治疗,研究组基于对照组进行醒脑开窍针法联合tTMS治疗。对比两组治疗8周后的疗效,治疗前及治疗8周时的中医证候积分(神志恍惚、偏身麻木、口舌歪斜、半身不遂),美国国立卫生研究院卒中量表(National institutes of health stroke scale,NIHSS),脑卒中专用生活质量量表(stroke-specific quality of life scale,SS-QOL),改良Bathel指数(improved Bathel Index,MBI),Fugl-Meyer评分,脑血流动力学(血管阻力指数、平均流速),观察治疗期间的安全性。结果研究组有效率较对照组高(P<0.05)。两组治疗后的中医证候积分、NIHSS评分、血管阻力指数较治疗前均有下降(P<0.05),研究组以上指标较对照组低(P<0.05);两组治疗后的SS-QOL、MBI评分、Fugl-Meyer评分、平均流速较治疗前均有提高(P<0.05),研究组以上指标较对照组高(P<0.05)。两组脑卒中患者治疗期间均无明显不良反应。结论醒脑开窍针法联合rTMS能够显著提高脑卒中患者的疗效,提高患者生活质量和运动功能,减轻患者神经损伤,改善脑部血流动力学。展开更多
目的观察黄芩滑石汤结合雷贝拉唑治疗急性胃炎临床疗效以及安全性。方法纳入106例急性胃炎(2022年1月—2023年6月收治)进行该次研究,采取随机数字表法将患者分为对照组(53例)和观察组(53例),对照组患者采取雷贝拉唑治疗,观察组采取黄芩...目的观察黄芩滑石汤结合雷贝拉唑治疗急性胃炎临床疗效以及安全性。方法纳入106例急性胃炎(2022年1月—2023年6月收治)进行该次研究,采取随机数字表法将患者分为对照组(53例)和观察组(53例),对照组患者采取雷贝拉唑治疗,观察组采取黄芩滑石汤结合雷贝拉唑治疗,其中对照组治疗过程中脱落2例,观察组脱落2例,观察各组数据情况:临床疗效、腹痛、腹泻以及呕吐、发热等症状缓解时间、治疗前后各组患者中医证候积分(上腹饱胀、隐痛,食欲减退、嗳气、恶心呕吐)变化以及胃镜检查结果(出血、糜烂、水肿与充血)变化、降钙素原(procalcitonin,PCT)及C反应蛋白(C-reactive protein,CRP)水平以及胃泌素与胃动素水平变化、生活质量(quality of life,QOL)评分变化、不良反应。结果观察组患者与对照组患者治疗总有效率分别为96.08%(49/51)、84.31%(43/51),观察组更高(P<0.05);较对照组患者,观察组的呕吐、腹泻、腹痛和发热等方面的症状缓解时长更短(P<0.05);治疗前,各组患者中医证候积分(上腹饱胀、隐痛,食欲减退、嗳气、恶心呕吐)、胃镜检查结果(出血、糜烂、水肿与充血)、PCT及CRP、胃泌素与胃动素水平、QOL评分比较差异无统计学意义(P>0.05),各组患者治疗后中医证候积分(上腹饱胀、隐痛,食欲减退、嗳气、恶心呕吐)降低,出血、糜烂、水肿与充血等发生率下降,PCT及CRP显著降低,胃泌素与胃动素水平、QOL评分显著上升,P<0.05;观察组与对照组治疗不良反应率分别为0.00%(0/51)、3.92%(2/51),P>0.05。结论黄芩滑石汤结合雷贝拉唑治疗急性胃炎临床疗效显著,患者症状缓解,恢复快,且胃功能改善,生活质量提升,治疗不良反应率低,安全性高,可深入探讨。展开更多
基金sponsored by the National Defense Science and Technology Key Laboratory Fund(Grant No.61422062205)the Equipment Pre-Research Fund(Grant No.JCKYS2022LD9)。
文摘Brain functional networks model the brain's ability to exchange information across different regions,aiding in the understanding of the cognitive process of human visual attention during target searching,thereby contributing to the advancement of camouflage evaluation.In this study,images with various camouflage effects were presented to observers to generate electroencephalography(EEG)signals,which were then used to construct a brain functional network.The topological parameters of the network were subsequently extracted and input into a machine learning model for training.The results indicate that most of the classifiers achieved accuracy rates exceeding 70%.Specifically,the Logistic algorithm achieved an accuracy of 81.67%.Therefore,it is possible to predict target camouflage effectiveness with high accuracy without the need to calculate discovery probability.The proposed method fully considers the aspects of human visual and cognitive processes,overcomes the subjectivity of human interpretation,and achieves stable and reliable accuracy.
文摘Objective The aim of this study was to determine the effect of successful coronary revascularisation on left ventricular diastolic function.Methods We consecutively studied the diastolic function by Doppler echocardiography in 125 patients with one vessel disease before and 48 hours after selective coronary angioplasty. The following parameters of left ventricular diastolic function were evaluated: peak early (VE, m/s) and peak late diastolic (VA, m/s) flow velocity, E/A ratio, acceleration time (AT, ms), deceleration time (DT, ms) and isovolumetric relaxation time (IVRT, ms). Ejection fraction (EF; %) was determined and used to characterise systolic left ventricular function. Results All of the patients were initially successful treated with coronary angioplasty (residual stenosis <40% ). In 98 patients( 78.4% ) stents were used to improve an inadequate result after coronary angioplasty. Both patient groups (27 patients with coronary angioplasty and 98 patients with combined coronary angioplasty and stent implantation) showed no relevant differences concerning sex, age, atherosclerotic risk factors, exercise capacity and results of exercise electrocardiography. All patients who underwent stent implantation showed an early improvement of left ventricular diastolic function 48 hours after revascularisation. Surprisingly there was no significant short term improvement (48 hours) of diastolic function in patients with initially successful angioplasty.Conclusions We suppose that stent implantation might normalize coronary blood flow faster than that of coronary balloon angioplasty.
文摘This paper provides a review of methods of assessing a fragmentation weapon’s effectiveness against a point target or an area target with keeping the focus on the necessity of using the Carleton damage function with the correct shape factor.First,cookie-cutter damage functions are redefined to preserve the shape factor of and to have the same lethal area as the corresponding Carleton damage function.Then,closed-form solutions of the effectiveness methods are obtained by using those cookie-cutter damage functions and the Carleton damage function.Finally,the closed-form solutions are applied to calculate the probability of damaging a point target and the expected fractional damage to an area target for several attack scenarios by using cookie-cutter damage functions and the Carleton damage functions with different shape factors.The comparison of the calculation results shows that using cookie-cutter damage functions or the Carleton damage function with a wrong shape factor results in quite significant differences from using the original Carleton damage function with a correct shape factor when weapon’s delivery error deviations are less than or comparable to the lengths of the lethal area and the aim point is far from a target.The effectiveness methods improved in this paper will be useful for mission planning utilizing the precision-guided munitions in circumstances where the collateral damage should be reduced.
文摘Germplasm effect reflects the quantitative relation between production ability of germplasm elements and yield （quality） of a certain crop, which can be shown by mathematic function, namely, germplasm effect function. Germplasm effect of a crop variety is an aggregation of many effective factors, and is restrained by different effective factors; constant increase of any one effect of germplasm elements would lead to law of effect decline, therefore, possible modes of transgenic crops effect function were deduced according to the law of effect decline. The possible modes of single transgenic germplasm effect function and multi-transgenic germplasm effect regression equation were discussed, and the characteristics of germplasm effect regression equation were analyzed in this paper.
文摘目的研究醒脑开窍针法联合重复经颅磁刺激(repetitive transcranial magnetic stimulation,rTMS)治疗脑卒中患者的疗效及对生活质量、运动功能的影响。方法选择2022年2月—2023年10月在该院接受治疗的76例脑卒中患者,通过随机数字表法分为对照组和研究组,每组38例。对照组进行常规康复治疗,研究组基于对照组进行醒脑开窍针法联合tTMS治疗。对比两组治疗8周后的疗效,治疗前及治疗8周时的中医证候积分(神志恍惚、偏身麻木、口舌歪斜、半身不遂),美国国立卫生研究院卒中量表(National institutes of health stroke scale,NIHSS),脑卒中专用生活质量量表(stroke-specific quality of life scale,SS-QOL),改良Bathel指数(improved Bathel Index,MBI),Fugl-Meyer评分,脑血流动力学(血管阻力指数、平均流速),观察治疗期间的安全性。结果研究组有效率较对照组高(P<0.05)。两组治疗后的中医证候积分、NIHSS评分、血管阻力指数较治疗前均有下降(P<0.05),研究组以上指标较对照组低(P<0.05);两组治疗后的SS-QOL、MBI评分、Fugl-Meyer评分、平均流速较治疗前均有提高(P<0.05),研究组以上指标较对照组高(P<0.05)。两组脑卒中患者治疗期间均无明显不良反应。结论醒脑开窍针法联合rTMS能够显著提高脑卒中患者的疗效,提高患者生活质量和运动功能,减轻患者神经损伤,改善脑部血流动力学。
文摘目的观察黄芩滑石汤结合雷贝拉唑治疗急性胃炎临床疗效以及安全性。方法纳入106例急性胃炎(2022年1月—2023年6月收治)进行该次研究,采取随机数字表法将患者分为对照组(53例)和观察组(53例),对照组患者采取雷贝拉唑治疗,观察组采取黄芩滑石汤结合雷贝拉唑治疗,其中对照组治疗过程中脱落2例,观察组脱落2例,观察各组数据情况:临床疗效、腹痛、腹泻以及呕吐、发热等症状缓解时间、治疗前后各组患者中医证候积分(上腹饱胀、隐痛,食欲减退、嗳气、恶心呕吐)变化以及胃镜检查结果(出血、糜烂、水肿与充血)变化、降钙素原(procalcitonin,PCT)及C反应蛋白(C-reactive protein,CRP)水平以及胃泌素与胃动素水平变化、生活质量(quality of life,QOL)评分变化、不良反应。结果观察组患者与对照组患者治疗总有效率分别为96.08%(49/51)、84.31%(43/51),观察组更高(P<0.05);较对照组患者,观察组的呕吐、腹泻、腹痛和发热等方面的症状缓解时长更短(P<0.05);治疗前,各组患者中医证候积分(上腹饱胀、隐痛,食欲减退、嗳气、恶心呕吐)、胃镜检查结果(出血、糜烂、水肿与充血)、PCT及CRP、胃泌素与胃动素水平、QOL评分比较差异无统计学意义(P>0.05),各组患者治疗后中医证候积分(上腹饱胀、隐痛,食欲减退、嗳气、恶心呕吐)降低,出血、糜烂、水肿与充血等发生率下降,PCT及CRP显著降低,胃泌素与胃动素水平、QOL评分显著上升,P<0.05;观察组与对照组治疗不良反应率分别为0.00%(0/51)、3.92%(2/51),P>0.05。结论黄芩滑石汤结合雷贝拉唑治疗急性胃炎临床疗效显著,患者症状缓解,恢复快,且胃功能改善,生活质量提升,治疗不良反应率低,安全性高,可深入探讨。
