Dear Editor,This letter presents an organoid segmentation model based on multi-axis attention with convolution parallel block.MACPNet adeptly captures dynamic dependencies within bright-field microscopy images,improvi...Dear Editor,This letter presents an organoid segmentation model based on multi-axis attention with convolution parallel block.MACPNet adeptly captures dynamic dependencies within bright-field microscopy images,improving global modeling beyond conventional UNet.展开更多
The Covid-19 pandemic produced a complex combination of intense negative emotions among the general public,influencing people's coping reactions toward the pandemic.Yet each discrete emotion may affect people'...The Covid-19 pandemic produced a complex combination of intense negative emotions among the general public,influencing people's coping reactions toward the pandemic.Yet each discrete emotion may affect people's behaviors in different ways.Unveiling the specific emotion–behavior relationships can provide valuable implications for designing effective intervention programs.Through the lens of the appraisal theory of emotion,we assessed the relationships between negative emotions and pandemic-related behaviors among the Chinese population midst the early outbreak of the pandemic.An anonymous online survey was distributed to mainland of China participants(n=2976),which assessed individuals'emotional states and behavioral reactions to the pandemic.Consistent with the differential appraisal theme underlying each negative emotion as delineated by the appraisal theory,mixed relationships between emotions and pandemic-related behaviors were revealed.Specifically,anxiety was positively associated with behaviors of seeking pandemic-related information,sharing such information,and stockpiling preventive goods,yet,contrary to prediction,anxious people were reluctant to adopt preventive measures,which is maladaptive.Sad people sought information less frequently and exhibited lower intention to stockpile preventive goods;but,opposing prediction,they shared information less frequently.Angry people were more active in sharing information and in stockpiling preventive goods.These findings suggest that public health practitioners can utilize the emotion–behavior relationships to identify the vulnerable individuals who tend to adopt maladaptive coping behaviors,help them address emotional distress,and encourage their adoption of effective coping behaviors.展开更多
Underwater navigation system is an indispensable part for autonomous underwater vehicles.Due to the indiscernibility of satellite signal,however,the underwater navigation problem is quite challenging,and a satellite-f...Underwater navigation system is an indispensable part for autonomous underwater vehicles.Due to the indiscernibility of satellite signal,however,the underwater navigation problem is quite challenging,and a satellite-free navigation scheme should be looked for.Polarization navigation,inspired by insects’capability of autonomous homing and foraging,is an alternative solution to satellite navigation with great application potential.Underwater polarization provides an indirect sun compass to animals for orientation determination.However,it is difficult to apply terrestrial solar-tracking methodologies in underwater situations due to the refraction of polarized skylight at the air–water interface.To resolve this issue,an underwater solar-tracking algorithm is developed based on the underwater refraction-polarization pattern inside the Snell’s window.By employing Snell’s law and Fresnel refraction formula to decouple the refractive ray bending and polarization deflection,the celestial polarization pattern is obtained based on underwater measurement.To further improve the accuracy,the degree of polarization is employed as a weight factor for E-vector.A long-lasting underwater experiment was conducted to validate the effectiveness of the proposed approach,and the results showed the root-mean-square errors of solar zenith and azimuth employing this algorithm were 0.3°and 1.3°,respectively.Our experimental results show that the refraction-polarization pattern inside the Snell’s window exhibits immense potential to improve the solar-tracking accuracy for underwater navigation.展开更多
基金supported by the Xinjiang Tianchi Talents Program(E33B9401)the Natural Science Foundation of Xinjiang Uygur Autonomous Region(2023D01E15)+1 种基金the National Natural Science Foundation of China(62302495)the National Natural Science Foundation of China(62373348)。
文摘Dear Editor,This letter presents an organoid segmentation model based on multi-axis attention with convolution parallel block.MACPNet adeptly captures dynamic dependencies within bright-field microscopy images,improving global modeling beyond conventional UNet.
基金supported by grants from the National Natural Science Foundation of China(No.71802198)University of South China Covid-19 epidemic prevention and control scientific research emergency project(2020-2-5),Hunan province 2020 innovative province construction special topic to combat Covid-19 epidemic emergency(2020SK3010)Major Program of the National Social Science Foundation of China(No.21ZDA036).
文摘The Covid-19 pandemic produced a complex combination of intense negative emotions among the general public,influencing people's coping reactions toward the pandemic.Yet each discrete emotion may affect people's behaviors in different ways.Unveiling the specific emotion–behavior relationships can provide valuable implications for designing effective intervention programs.Through the lens of the appraisal theory of emotion,we assessed the relationships between negative emotions and pandemic-related behaviors among the Chinese population midst the early outbreak of the pandemic.An anonymous online survey was distributed to mainland of China participants(n=2976),which assessed individuals'emotional states and behavioral reactions to the pandemic.Consistent with the differential appraisal theme underlying each negative emotion as delineated by the appraisal theory,mixed relationships between emotions and pandemic-related behaviors were revealed.Specifically,anxiety was positively associated with behaviors of seeking pandemic-related information,sharing such information,and stockpiling preventive goods,yet,contrary to prediction,anxious people were reluctant to adopt preventive measures,which is maladaptive.Sad people sought information less frequently and exhibited lower intention to stockpile preventive goods;but,opposing prediction,they shared information less frequently.Angry people were more active in sharing information and in stockpiling preventive goods.These findings suggest that public health practitioners can utilize the emotion–behavior relationships to identify the vulnerable individuals who tend to adopt maladaptive coping behaviors,help them address emotional distress,and encourage their adoption of effective coping behaviors.
基金supported by grants from the National Natural Science Foundation of China(Nos.61751302,62003017,61627810,61833013,61973012)Science and Technology Key Innovative Project of Hangzhou,China(No.20182014B06)。
文摘Underwater navigation system is an indispensable part for autonomous underwater vehicles.Due to the indiscernibility of satellite signal,however,the underwater navigation problem is quite challenging,and a satellite-free navigation scheme should be looked for.Polarization navigation,inspired by insects’capability of autonomous homing and foraging,is an alternative solution to satellite navigation with great application potential.Underwater polarization provides an indirect sun compass to animals for orientation determination.However,it is difficult to apply terrestrial solar-tracking methodologies in underwater situations due to the refraction of polarized skylight at the air–water interface.To resolve this issue,an underwater solar-tracking algorithm is developed based on the underwater refraction-polarization pattern inside the Snell’s window.By employing Snell’s law and Fresnel refraction formula to decouple the refractive ray bending and polarization deflection,the celestial polarization pattern is obtained based on underwater measurement.To further improve the accuracy,the degree of polarization is employed as a weight factor for E-vector.A long-lasting underwater experiment was conducted to validate the effectiveness of the proposed approach,and the results showed the root-mean-square errors of solar zenith and azimuth employing this algorithm were 0.3°and 1.3°,respectively.Our experimental results show that the refraction-polarization pattern inside the Snell’s window exhibits immense potential to improve the solar-tracking accuracy for underwater navigation.
