目的探讨首发男性精神分裂症患者康复期工作记忆功能的特点。方法选取2020年11月至2024年12月入住某院精神科的男性首发精神分裂症康复期患者59例(患者组)和男性健康志愿者60名(对照组),采用蒙特利尔认知评估(MoCA)量表对两组被试认知...目的探讨首发男性精神分裂症患者康复期工作记忆功能的特点。方法选取2020年11月至2024年12月入住某院精神科的男性首发精神分裂症康复期患者59例(患者组)和男性健康志愿者60名(对照组),采用蒙特利尔认知评估(MoCA)量表对两组被试认知功能进行评估,通过数字n-back任务(0-back、1-back、2-back)评估工作记忆,比较两组行为学表现。结果两组在年龄、受教育年限、MoCA评分等一般情况差异无统计学意义(P>0.05);患者组在0-back、1-back和2-back任务中的正确率(97.33%、94.00%、82.67%)均显著低于对照组(98.33%、96.16%、89.67%,P<0.05),0-back和1-back任务反应时(440.65 ms、467.00 ms)显著长于对照组(393.85 ms、440.09 ms,P<0.05),2-back反应时两组差异无统计学意义(541.75 ms VS 534.55 ms,P>0.05)。结论首发男性精神分裂症患者康复期存在工作记忆功能损伤,表现为正确率下降和反应延迟,提示其可能是该疾病的原发性认知缺陷。展开更多
This study aimed to model and identify the most productive cutting methods of tree plantations by comparing a forward felling technique(C)with sideways techniques outside(A and D)or inside cutting edge(B and E).Drone ...This study aimed to model and identify the most productive cutting methods of tree plantations by comparing a forward felling technique(C)with sideways techniques outside(A and D)or inside cutting edge(B and E).Drone video material of each tree was analyzed by comparing time distribution of work phases.The relation between this input data and harvester production data was analyzed by regression models.A quadratic model predicted productiv-ity precisely(R^(2)=0.95)and explained the effective-hour productivity in cutting cycle with dummy variables of har-vesting conditions.The productivity was explained by tree size and cutting cycle time,while effects of operator and harvester were eliminated by statistical analysis.In loblolly pine(Pinus taeda L.)plantations on flat terrain,cutting method B was 4.8 m3/E0h(effective working hour)more productive than method A,and 6.7 m^(3)/E0h than method C.In Sydney blue gum(Eucalyptus saligna Sm.)plantations,cutting method E was 1.8 m^(3)/E0h more productive than cut-ting method D on sloping terrain.Of the time-cycle vari-ables,time consumption of the“moving of tree”changed significantly between the cutting methods,of which the ones that used the sideways felling technique inside cutting edge were most efficient.This quadratic modeling structure can be recommended for precise studies in similar harvesting conditions.展开更多
文摘目的探讨首发男性精神分裂症患者康复期工作记忆功能的特点。方法选取2020年11月至2024年12月入住某院精神科的男性首发精神分裂症康复期患者59例(患者组)和男性健康志愿者60名(对照组),采用蒙特利尔认知评估(MoCA)量表对两组被试认知功能进行评估,通过数字n-back任务(0-back、1-back、2-back)评估工作记忆,比较两组行为学表现。结果两组在年龄、受教育年限、MoCA评分等一般情况差异无统计学意义(P>0.05);患者组在0-back、1-back和2-back任务中的正确率(97.33%、94.00%、82.67%)均显著低于对照组(98.33%、96.16%、89.67%,P<0.05),0-back和1-back任务反应时(440.65 ms、467.00 ms)显著长于对照组(393.85 ms、440.09 ms,P<0.05),2-back反应时两组差异无统计学意义(541.75 ms VS 534.55 ms,P>0.05)。结论首发男性精神分裂症患者康复期存在工作记忆功能损伤,表现为正确率下降和反应延迟,提示其可能是该疾病的原发性认知缺陷。
文摘This study aimed to model and identify the most productive cutting methods of tree plantations by comparing a forward felling technique(C)with sideways techniques outside(A and D)or inside cutting edge(B and E).Drone video material of each tree was analyzed by comparing time distribution of work phases.The relation between this input data and harvester production data was analyzed by regression models.A quadratic model predicted productiv-ity precisely(R^(2)=0.95)and explained the effective-hour productivity in cutting cycle with dummy variables of har-vesting conditions.The productivity was explained by tree size and cutting cycle time,while effects of operator and harvester were eliminated by statistical analysis.In loblolly pine(Pinus taeda L.)plantations on flat terrain,cutting method B was 4.8 m3/E0h(effective working hour)more productive than method A,and 6.7 m^(3)/E0h than method C.In Sydney blue gum(Eucalyptus saligna Sm.)plantations,cutting method E was 1.8 m^(3)/E0h more productive than cut-ting method D on sloping terrain.Of the time-cycle vari-ables,time consumption of the“moving of tree”changed significantly between the cutting methods,of which the ones that used the sideways felling technique inside cutting edge were most efficient.This quadratic modeling structure can be recommended for precise studies in similar harvesting conditions.
