不同滚揉腌制工艺对野鸭腿肉品质的影响

以野鸭腿肉为原料,对其分别进行常规腌制、常压滚揉腌制、加压滚揉腌制、真空滚揉腌制以及呼吸滚揉腌制五种方式进行处理,对比研究五种腌制工艺对野鸭腿肉品质的影响.结果表明,加压滚揉腌制对野鸭腿肉肉色改变最为明显.不同滚揉工艺处理的野鸭腿肉腌制出品率均明显高于常规腌制的腌制出品率,而蒸煮损失率明显低于常规腌制.加压滚揉的野鸭腿肉腌制出品率最高,真空滚揉的野鸭腿肉蒸煮损失率最小,加压滚揉和真空滚揉的最终产品得率基本相同.不同腌制处理的野鸭腿肉最终产品感官评定值基本相同,加压滚揉腌制8 h产品感官评定值达到最大,可有效缩短野鸭腿肉的腌制时间,比常规腌制可缩短时间75%.     

关目漏洞与戏曲审美别解

关目漏洞是古代戏曲作品在情节结构或内容方面所体现出的破绽。古代戏曲理论家对此多持批评态度。今人更有非议之词。但是,从戏曲审美的角度来研究,戏曲中的关目漏洞,恰可以形成很好的审美效果,激发观赏者兴趣。     

带排队信息提示的呼叫中心人力资源分配方法

针对一类带有排队等待时间提示的呼叫中心人力资源分配问题，提出了基于考虑顾客放弃行为的M/M/N+M排队模型的优化方法.首先，给出了系统提示等待时间的估算方法和排队等待时间提示对顾客放弃行为(直接退出和中途放弃)影响的概率函数.其次，通过生灭过程的评估方法给出了稳态系统的性能计算公式，并且设计了基于固定点算法的人力资源水平求解算法.最后，通过数值分析给出了排队信息对顾客放弃行为和对人力资源水平的影响效果.研究结果表明，所提出的方法对具有排队信息提示的呼叫中心人力资源管理具有一定的指导作用.     

英语专业学生话语标记语使用情况之实证研究

通过语料库文本分析的方式,把中国英语学习者（英语专业学生）话语标记语的使用情况和英语本族语者话语标记语的使用情况进行对比。结果显示,中国英语学习者（英语专业学生）在使用频率和使用类型上都有明显差距。教师在教学中应有意识地引导学生注意话语标记语的使用,从而使学生的表达更加流利。     

城中村的人居环境分析及改造思考

概括城中村的现状并结合太原市现阶段的改造情况,提出要正确把握城中村的定位,并从制度和形式上提出改造措施。     

当代中国大中专院校电工技术教学的两大发明

以4项发明专利,对照电工和电力电子技木教科书上基础电路教材,论述龚氏桥全整流电路和龚氏斩控交流调压电路必将轻松走进世界科学讲堂和教科书,为电工和电力电子技术的教科书上独占一大类的相控整流电路——龚氏桥全整流电路和一个龚氏斩控式交流调压电路。它们是大中专院校电工和电力电子技术教学的四大发明中最重要的两大发明。     

化学发光法测定健康成年男性血清CA125的正常参考值

目的:建立健康成年男性血清肿瘤抗原125(CA125)正常参考值范围.方法:采用美国雅培公司生产的全自动化学发光免疫分析仪i2000检测203例健康成年男性血清CA125水平,计算第95百分位数(P95),建立正常参考值范围.结果:血清CA125呈偏态分布.血清CA125中位数为10.3 U/mL,最小值为1.3 U/...     

Investigation of silicon on insulator fabricated by two-step O+ implantation

In this paper, we investigated the dose window of forming a continuous buried oxide (BOX) layer by single implantation at the implantation energy of 200 keV. Then, an improved two-step implantation process with second implantation dose of 3×10¹⁵ cm^?2 was developed to fabricate high quality separation by implanted oxygen (SIMOX) silicon on insulator (SOI) wafers. Compared with traditional single implantation, the implantation dose is reduced by 18.2%. In addition, the thickness and uniformity of the BOX layers were evaluated by spectroscopic ellipsometry. Defect-free top Si as well as atomic-scale sharp top Si/buried oxide interfaces were observed by transmission electron microscopy, indicating a high crystal quality and a perfect structure of the SOI fabricated by two step implantation. The top Si/BOX interface morphology of the SOI wafers fabricated by single or two-step implantation was also investigated by atomic force microscopy.     

一类区间不确定时滞系统超前/滞后补偿器设计

针对一类具有全极点的区间不确定时滞系统,给出了相位超前/滞后补偿器的一种图解鲁棒设计方法.对滞后因子采用一阶Pade近似,应用广义Kharitonov定理,证明了图解法设计出的相位超前/滞后补偿器可以镇定区间不确定近似系统.通过仿真验证了该补偿器亦可镇定原区间不确定时滞系统,并保持良好的系统性能.该种图解设计方法选择参数灵活,便于实际应用.     

Optimal policy with a total order quantity commitment contract in the presence of a spot market

In this paper,the optimal policy is considered when the buyer faces two supply sources:one is the contract supplier from which the buyer orders over a specific contract period(say,a year) at a pre-agreed price,and the other is the spot market.However,when ordering from the contract supplier,the buyer must fulfill a pre-determined total order quantity,or the so-called definite total order quantity commitment,over the whole contract period.In other words,the commitment secures the buyer a fixed price but obliges him/her a total order quantity over the contract period.Although the spot market gives the buyer more flexibility in terms of order quantities,its prices are volatile.Such a combination of contract and spot procurements is often observed in practice.Within the contract period,there are multiple sub-periods,during each of which the buyer reviews the inventory,issues an individual order,and uses the on-hand inventory to meet the random demand.Thus,in each(ordering) period,the buyer will weigh between the current known spot price(by procuring from the spot market) and a lower future price(by waiting while consuming the remaining commitment).An optimal dual ordering policy is characterized for each period,depending on the on-hand inventory level,the spot price,and the remaining commitment quantity.The optimal policy in each period is also shown to be independent of the contract price.Through a numerical study,the inventory cost is demonstrated to be(1) insensitive to the contract price when the total commitment quantity is lower than the total expected demand over the contract period and(2) non-increasing in the variability of spot prices.