平均时间

The main work and the originality points of this dissertation could be concluded as the following parts:(1) To analyze systematically the mathematical model of LES of air flow in great space, under the case of isothermal and non-isothermal, as well as the combined action of buoyancy and strain. Some basic problems are studied about the LES application into airflow simulation of great space, such as boundary conditions, spatial difference scheme and time advancing scheme, time step etc., which creates the basis for the LES application to indoor airflow simulation.(2) Both the instantaneous and time averaged flow field of great space with multiple jets under isothermal and non-isothermal cases are explored with large eddy simulation method, and also discussed the dynamic characteristics and the law of fluidflow in the great space.(3) Based on the results of LES of the great space and the Fanger thermal comfort indexes, it is brought forward the concept of the series of dynamic thermal comfort evaluating indexes, which could be divided into thermal comfort index with time averaged properties PD, PPD, PMV, thermal comfort index with instantaneous properties IPD, IPPD, IPMV, and time averaged thermal comfort indexes TAPD, TAPPD, TAPMV, and transient situations time averaged thermal comfort indexes TTAPD, TTAPPD, TTAPMV. The differences among them and the calculation methods are discussed, and the four kinds of indexes are calculated with the thermal comfort index PD as an example.(4) Based on the LES results it is discussed the hot air stratification phenomena in air-conditioned buildings in the case with air supply and return registers on the ceiling and the case on the sidewall. The fundamentals of the hot air stratification are studied and the relations of estimating hot air stratification are brought forward.(5) With the advanced apparatus such as hot wire film anemometer IFA300 and laser particle field anemoscope, corresponding model test and site measurements have been done, which are compared with the simulation results and LES is proved a very promising method in air flow simulation indoor.

本文主要工作既创新点体现在以下几个方面：(1)系统分析了等温、非等温和考虑剪切力与浮升力综合作用的高大空间大涡模拟数学模型，并研究了高大空间大涡模拟在室内气流仿真应用中的一些基本问题，如边界条件、空间离散格式和时间推进格式、时间步长选择等问题，为大涡模拟在室内气流计算中的广泛应用打下了基础；(2)首次用大涡模拟方法研究了高雷诺数下高大空间多射流在等温、非等温情况下的瞬时流场和时均流场分布，并探讨了多射流流场的动态特性和流动规律；(3)基于大涡模拟的动态仿真结果和Fanger的热舒适指标，首次系统地提出了动态热舒适评价指标体系的概念：即基于时间平均参数的热舒适指标PD、PPD、PMV；基于瞬时参数的瞬时热指标IPD、IPPD、IPMV；基于时间平均热舒适指标TAPD、TAPPD、TAPMV；以及沿行动迹线的时间平均热舒适指标TTAPD、TTAPPD、TTAPMV，并分析了四类热舒适指标的差异性和计算方法，还以PD值为例对四类指标分别进行了计算；(4)基于数十种工况下空调房间大涡模拟的结果，研究了空调建筑上送上回和侧送侧回两种情况下热分层现象，并探讨了热分层的基本规律，首次提出了避免热分层现象的判断公式；(5)在暖通空调领域，首次使用IFA300热线风速仪、激光粒子速度场仪等先进设备，完成了与大涡模拟相对应的模型试验，并把实测结果与仿真结果进行了对比，说明LES在室内气流仿真方面是一种很有前景的方法。

The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.

在弯曲关节模型推导的基础上，建立扭转关节的静态模型，并分析了扭转关节内腔压力，初始转角，橡胶管平均半径，橡胶管壁厚等参数对关节转角的影响，得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系，扭转关节的转角随初始角度和橡胶管平均半径的增大而增大，扭转关节的转角随橡胶管壁厚的增大而减小的结论；建立了扭转关节的动力学方程，仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短，在实际系统设计和控制过程中可以忽略不计；分析讨论橡胶管壁厚，平均半径，初始角度，气体节流口面积，转动惯量，粘性阻尼系数等因素对扭转关节动态特性的影响，得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显，壁厚较小时，关节可以得到较大的转角，并且转角的响应曲线没有超调，但上升时间长，壁厚较大时，关节转角变小，响应加快，但是有超调和轻微振荡现象，橡胶管平均半径越大，得到的关节转角越大，但是转角响应的超调量也随之增大，FPA的初始角度越大，关节的转角越大，并且超调量减小，振荡减弱，但是上升时间增大，管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大，但对关节转角的动态响应几乎没有影响，转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。

The uncovered tracts and the liver wound surface were managed by some of the methods combined such as high frequency electrocoagulation, titanium clamp, suture, hemostatic gauze oppression, argon-beam coagulation, protein glue adherence, and Endo-GIA switcher. The total operative outcome, operating time, blood loss, postoperative complications and postoperative hospital stay were summarized in order to assess feasibility and safety of the clinical laparoscopic liver resection.Results: 1. Laparoscopic liver resection with clamp dissection method needs only the ordinary laparoscopic equipment. It has a low cost but causes a little more bleeding. 2. Laparoscopic liver resection operated by microwave tissue coagulation method had very little bleeding when dissecting hepatic parenchyma. The operative field is clear and the cost is low. It is a safe, convenient and effective method. 3. Ultrasound dissector is a relatively ideal appliance for laparoscopic liver resection at present because ofless bleeding during operation. But the speed is slow thus prolongs the operation time. Its separating intensity is not strong enough, and it can only be applied to patients without hepatic cirrhosis. 4. Ligsure has clamp dissection and electrocoagulation functions. It can carbonize hepatic tissue including the tracts whose diameters are less than 7mm. It has some advantage in dissecting. However, it has the shortcomings of the clamp dissector during coagulating. 5. Hand-assisted laparoscopic liver resection can make use of the flexibility and feeling of the operators left hand.

结果：1、钳夹分离切肝法不需特殊仪器设备，只要具备常规的腹腔镜器械即可实施，成本低，肝断面较易渗血；2、微波固化切肝法肝实质出血很少，视野清晰，成本低，操作简单，是一种安全、简便、有效的方法；3、超声刀是目前较为理想的切肝器械，术中出血少，但是，切割速度慢，手术时间长，而且，切割强度有限，适用于无肝硬化的肝切除；4、Ligsure具有挤压粉碎及高频电凝止血两大功能，可使包括7~以下管道的肝组织碳化、形成焦痴，具有一定的优势，但是，也存在分离钳电凝止血的缺点；5、手辅助腹腔镜肝切除可以利用术者左手的灵活性及手感，便于术中显露、分离、控制出血等，可随意协助右手及助手的主要操作，缩短了手术时间，大大提高了腹腔镜肝切除的安全性，李朝龙等的改良方法，同样达到了手辅助目的，又节省了费用；6、小切口腹腔镜辅助切肝法可以使用剖腹肝切除常规器械及剖腹肝切除技术，操作简单、可靠，适用于肝左外叶切除及右肝第V段切除；7、Endo一GIA切肝法在离断肝组织的同时闭合管道结构，多用于肝左静脉、门静脉分支、管径较大胆管的切割，缺点是不能用于较厚肝组织的切割，而且价格昂贵；8、临床巧例腹腔镜肝切除均获得成功，手术时间最短1.5h，最长sh，平均125 min，多数在100 min左右，手术出血量最少50 ml，最多500 ml，平均1 78 ml，除2例合并严重肝硬化的原发性肝癌患者术后出现少量腹水，1例术后发生胆漏外，其余无并发症，发生胆漏的1例患者术后住院40d，多数在术后一周左右出院，术后住院时间5一40d，平均gd。

ResultsClean time of operated area and epithelization time of treatment group were shorter than those in control group.

结果治疗组术腔清洁时间（平均1.3周）和上皮化时间（平均8周）均较对照组术腔清洁时间（平均2.1周）和上皮化时间（平均12周）明显提前。

The surgical duration ranged from 35 to 170 min ［mean=（92.3±25.6） min］; amount of blood loss during operation was 50-700 ml ［mean=（120.0±36.3） ml］. The earliest time of anal exsufflation was 9 h after operation and the last was 27 h. The postoperative morbidity was 12.6%. The hospital stay ranged from 5 d to 9 d ［mean=（7.2±1.6） d］.

手术时间最长170 min，最短35 min，平均(92.3±25.6) min；术中出血50～700 ml，平均(120.0±36.3) ml，术后肛门排气时间最短9 h，最长27 h，术后病率12.6%，住院时间最短5天，最长9天，平均(7.2±1.6)天。

Elderly patients with conservative treatment of femoral neck fracture in the bone unhealing rate, avascular necrosis rate and bed incidence of complications are very high, often need surgical treatment, Currently Artificial arthroplasty better able to load the early running, and significantly improved the quality of life. Orthopedist has been universally acknowledged, which was also hemiarthroplasty for and hip arthroplasty mainly, But these indications of operation and the pros and cons of surviving in numerous disputes, By comparing our double-action Hemiarthroplasty with total hip arthroplasty for femoral neck fracture in the elderly average operative time, The average blood transfusion, the average length of stay, average hospital charges, early complications, Harris score, Oxford hip score standards evaluation discussion bipola Femeral Head placement with total hip arthroplasty in the treatment of femoral neck fracture in the elderly: the advantages and disadvantages.

老年患者股骨颈骨折保守治疗的骨不愈合率、股骨头缺血坏死率及卧床并发症发生率很高，常需要行手术治疗，目前应用人工关节置换疗效较好，能早期负重行走，生活质量明显提高，已得到骨科医师的普遍认同，其中又以人工股骨头置换术和人工髋关节置换术为主，但这些术式的适应证及利弊尚存在诸多争议，我们通过比较双动人工股骨头置换与全髋关节置换治疗老年人股骨颈骨折的平均手术时间、平均输血量、平均住院时间、平均住院费用、早期并发症、Harris评分、牛津髋关节评分标准评价来探讨双动人工股骨头置换与全髋关节置换在老年人股骨颈骨折治疗中的优势与劣势。

Results: Several initial iterations of the paradigm failed to produce useful activation maps and required modification of the protocol to reduce the complexity of language tasks, eliminate verbalization and implement head immobilization to reduce corruption of data from involuntary head movements.

结果：所有受试者均按照要求完成全部实验，语音相近组平均反应时间为1.214±0.167ms，语音不相近平均反应时间为1.215±0.135ms；语音相近组平均判断正确率为84.3％±13.5％，语音不相近组平均判断正确率为94.1％±8.0％。

Cases treated by incision and thread drawing with 1 recurred(average healing time 20.22±5.24 days); 32 cases by incision suture plus internal opening drainage with 3 recurred(average healing time 22.84±6.66 days); 34 cases by fistulectomy and primary suture with 5 recurred( average healing time 25.56 ±7.51 days);32 cases by fistulotomy with 6 recurred(average healing time 30.43±10.72 days).

结果：随访5～10个月(平均7 2个月)，切开挂线术37例，复发1例，平均愈合时间(20 22±5 24)d；切缝内口引流术32例，复发3例，平均愈合时间(22 84±6 66)d；瘘管摘除缝合术34例，复发5例，平均愈合时间(25 56±7 51)d；瘘管旷置术32例，复发6例，平均愈合时间(30 43±10 72)d。

Cases treated by incision and thread drawing with 1 recurred(average healing time 20.22±5.24 days); 32 cases by incision suture plus internal opening drainage with 3 recurred(average healing time 22.84±6.66 days); 34 cases by fistulectomy and primary suture with 5 recurred( average healing time 25.56 ±7.51 days);32 cases by fistulotomy with 6 recurred(average healing time 30.43±10.72 days).conclusion:low complex anal fistula usually can be treated by incision suture plus interal opening drainage or fistulectomy and primary suture, and high complex anal fistula by incision and thread drawing or fistulotomy.

结果：随访5～10个月(平均7 2个月)，切开挂线术37例，复发1例，平均愈合时间(20 22±5 24)d；切缝内口引流术32例，复发3例，平均愈合时间(22 84±6 66)d；瘘管摘除缝合术34例，复发5例，平均愈合时间(25 56±7 51)d；瘘管旷置术32例，复发6例，平均愈合时间(30 43±10 72)d。结论：低位复杂性肛瘘多采用切缝内口引流术、瘘管摘除缝合术；高位复杂性肛瘘多采用切开挂线术、瘘管旷置术。

ATT. The average length of a complete customer transaction over the phone.

ATT。电话中一次完整的客户事务平均时间长度。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。