Waste wood was studied in an economic enterprise by logging, function, tree species and log size in four Caspian hardwood sites. Dam- aged logs were recorded with additional information obtained for the location, dime...Waste wood was studied in an economic enterprise by logging, function, tree species and log size in four Caspian hardwood sites. Dam- aged logs were recorded with additional information obtained for the location, dimensions and type of damage. The data were analyzed statis- tically to determine significant differences of damage during logging process. The results indicated that animal harvesting systems cause more volume （40.5% of log volume） and value loss （89.5 $.m^-3） to logs than mechanized harvesting systems （13.9% and 6.0 $.m^-3）, also bucking resulted in significantly more volume （9.9% of log volume） and value loss （5.5 $.m-3） when compared to skidding （0.2% of log volume and 0.2 $.m^-3）, decking （0.4% of log volume and 0.2 $.m^-3） and loading （0.2% of log＇s volume and 0.3 $.m^-3） operations. Study showed that the processes of skidding, decking and loading of logs have very little impact on dam- age levels. Volume and value losses of damaged logs are not sensitive to tree species and log size. The information from the field study is impor- tant in creating new guidelines or training to help minimize hardwood log damage during the timber harvesting process.展开更多
驱动的可靠运行对于操作系统至关重要,驱动的长久稳定运行依赖于正确的驱动配置.由于硬件本身存在大量约束条件,对系统进行修改,或者对驱动、内核升级,或者对设备更新换代时容易发生驱动配置错误,而该类错误尚无法通过现有的方法直接进...驱动的可靠运行对于操作系统至关重要,驱动的长久稳定运行依赖于正确的驱动配置.由于硬件本身存在大量约束条件,对系统进行修改,或者对驱动、内核升级,或者对设备更新换代时容易发生驱动配置错误,而该类错误尚无法通过现有的方法直接进行定位和解决.文中设计并实现了AiLsDc(Automatically inserting Log system for Driver configuration)自动日志插入辅助检错系统,能够根据参数配置规范文档中的规则进行驱动配置检查.AiLsDc首先按照定义的驱动配置规范规格XML文档对驱动源码进行插装和修改,运行时动态检查驱动的配置是否满足配置规范文档的要求.当出现参数违例时,日志记录模块将会自动记录可能引起该违例的错误原因和错误位置.通过对比和检查日志,能够在出错时快速定位从而辅助纠错,提高开发效率.实用性评测表明,系统能够捕获配置异常,而性能评测结果表明,AiLsDc系统在提高驱动的可靠性的同时,带来的开销很小.展开更多
The article deals with the prduction lines in log yard by investigating the utilizationof machines in forest areas,presents the methods and rules of differentiating the log productionlines and also summarizes the form...The article deals with the prduction lines in log yard by investigating the utilizationof machines in forest areas,presents the methods and rules of differentiating the log productionlines and also summarizes the formation and development of three kinds of log production lines innortbeast forest areas of China.It gives different combination types of log production lines andtheir applications, so it is significant for us to evaluate and standardize the log Production lines.展开更多
目的:比较第8版美国肿瘤联合会(American Joint Committee on Cancer,AJCC)/国际抗癌联盟(Union for International Cancer Control,UICC)胃癌淋巴结分期(N分期)、淋巴结转移率(metastatic ly mph node ratio,r N)分期和阳性淋巴结对数...目的:比较第8版美国肿瘤联合会(American Joint Committee on Cancer,AJCC)/国际抗癌联盟(Union for International Cancer Control,UICC)胃癌淋巴结分期(N分期)、淋巴结转移率(metastatic ly mph node ratio,r N)分期和阳性淋巴结对数比(log odds of positive ly mph nodes,LODDS)3种淋巴结分期方法对于接受胃癌根治术后患者预后的预测性能。方法:收集117例2009年1月至2011年12月在安徽医科大学第三附属医院胃肠外科接受胃癌根治术患者的病理及随访数据,并进行受试者工作特征(receiver operating characteristic,ROC)曲线分析。评估不同淋巴结分期方法对于预后的预测性能。结果:总体样本中3种分期方法均有预测性能,而LODDS分期方法的预测性能高于N分期及r N分期;在总体转移淋巴结数为0的样本中,仅LODDS分期有预测性能。而将三者作为连续性变量分析时,预测能力上升。结论:LODDS的预测性能优于N分期及r N分期;当总体转移淋巴结数为0时,仅LODDS分期有预测性能。将淋巴结情况作为连续性变量能更好地评估预后。展开更多
文摘Waste wood was studied in an economic enterprise by logging, function, tree species and log size in four Caspian hardwood sites. Dam- aged logs were recorded with additional information obtained for the location, dimensions and type of damage. The data were analyzed statis- tically to determine significant differences of damage during logging process. The results indicated that animal harvesting systems cause more volume （40.5% of log volume） and value loss （89.5 $.m^-3） to logs than mechanized harvesting systems （13.9% and 6.0 $.m^-3）, also bucking resulted in significantly more volume （9.9% of log volume） and value loss （5.5 $.m-3） when compared to skidding （0.2% of log volume and 0.2 $.m^-3）, decking （0.4% of log volume and 0.2 $.m^-3） and loading （0.2% of log＇s volume and 0.3 $.m^-3） operations. Study showed that the processes of skidding, decking and loading of logs have very little impact on dam- age levels. Volume and value losses of damaged logs are not sensitive to tree species and log size. The information from the field study is impor- tant in creating new guidelines or training to help minimize hardwood log damage during the timber harvesting process.
文摘驱动的可靠运行对于操作系统至关重要,驱动的长久稳定运行依赖于正确的驱动配置.由于硬件本身存在大量约束条件,对系统进行修改,或者对驱动、内核升级,或者对设备更新换代时容易发生驱动配置错误,而该类错误尚无法通过现有的方法直接进行定位和解决.文中设计并实现了AiLsDc(Automatically inserting Log system for Driver configuration)自动日志插入辅助检错系统,能够根据参数配置规范文档中的规则进行驱动配置检查.AiLsDc首先按照定义的驱动配置规范规格XML文档对驱动源码进行插装和修改,运行时动态检查驱动的配置是否满足配置规范文档的要求.当出现参数违例时,日志记录模块将会自动记录可能引起该违例的错误原因和错误位置.通过对比和检查日志,能够在出错时快速定位从而辅助纠错,提高开发效率.实用性评测表明,系统能够捕获配置异常,而性能评测结果表明,AiLsDc系统在提高驱动的可靠性的同时,带来的开销很小.
文摘The article deals with the prduction lines in log yard by investigating the utilizationof machines in forest areas,presents the methods and rules of differentiating the log productionlines and also summarizes the formation and development of three kinds of log production lines innortbeast forest areas of China.It gives different combination types of log production lines andtheir applications, so it is significant for us to evaluate and standardize the log Production lines.
文摘目的:比较第8版美国肿瘤联合会(American Joint Committee on Cancer,AJCC)/国际抗癌联盟(Union for International Cancer Control,UICC)胃癌淋巴结分期(N分期)、淋巴结转移率(metastatic ly mph node ratio,r N)分期和阳性淋巴结对数比(log odds of positive ly mph nodes,LODDS)3种淋巴结分期方法对于接受胃癌根治术后患者预后的预测性能。方法:收集117例2009年1月至2011年12月在安徽医科大学第三附属医院胃肠外科接受胃癌根治术患者的病理及随访数据,并进行受试者工作特征(receiver operating characteristic,ROC)曲线分析。评估不同淋巴结分期方法对于预后的预测性能。结果:总体样本中3种分期方法均有预测性能,而LODDS分期方法的预测性能高于N分期及r N分期;在总体转移淋巴结数为0的样本中,仅LODDS分期有预测性能。而将三者作为连续性变量分析时,预测能力上升。结论:LODDS的预测性能优于N分期及r N分期;当总体转移淋巴结数为0时,仅LODDS分期有预测性能。将淋巴结情况作为连续性变量能更好地评估预后。
