A Engineering Machinery Co.,Ltd Salary system improvement research

A工程机械有限公司是福建省内规模较大、拥有履带吊台份数最多的设备租赁企业之一。近年来，由于工程量的递增和上游厂家的促销，导致从事起重设备租赁的企业越来越多，市场竞争愈烈，而该类租赁企业提供的机器设备差异不大，因此，人才的竞争成为该行业最主要的竞争。 本文采用企业薪酬理论，结合本公司的实际状况研究企业薪酬制度，制定合理的企业薪酬体系，增强企业在人才市场上的竞争优势，构建企业自身的核心竞争力，从而适应不断变化的市场需求。 本文首先确定薪酬制度建立的目标——构建符合企业支付能力以及有效调动员工积极性的新型薪酬体系。该薪酬体系结合了企业当下的支付水平和长远的激励计划，使员工和企业形成一致合力，共同...A Engineering Machinery Co., Ltd. is one of the biggest crane rental company in Fujian Province. Recent years,due to the increase in working quantity and excessive promotion of upstream manufacturers,more and more people rush into this trade.But the core product has no difference,so the human resources competition has become the most important competition in this industry. This paper wants to stu...学位：工商管理硕士院系专业：管理学院工商管理教育中心（MBA中心）_工商管理硕士(MBA)学号：1792008115111

Contrastive Analyses and Evaluation of Ancient Chinese Poems and Their English Translations from the Perspective of Textual Metafunction

M.A.K.Halliday曾非常明确地提出他建立系统功能语言学的目的是为语篇分析提供一个理论框架，语言的三大元功能是系统功能语言学的重要组成部分，为语篇分析者提供了重要的理论依据。语言的语篇功能是语言三大元功能之一，也是最重要的功能之一。国内外已有不少学者运用语篇功能的三个子系统对语篇进行分析。这些分析也已证明运用语篇功能的三个子系统对语篇进行分析是具有可行性与可操作性的。语篇功能主要由三个相互联系的子系统构成：主位结构，信息结构与衔接系统。 唐诗是一种特殊的语篇，以它的用语精炼，篇幅讲究而闻名。国内不少学者从系统功能语言学的角度对古诗语篇及其英译本进行对比分析，其中从三大元功能进行对比分...M. A. K. Halliday points out clearly that the purpose of constructing systemic functional linguistics (SFL) is to offer a theoretical outline for discourse analysis. The theory of three metafunctions of language is an important part of SFL which is very often applied to the discourse analysis by linguists. Textual metafunction is one of the three metafunctions and it is also a most important part....学位：文学硕士院系专业：外文学院英语语言文学系_英语语言文学学号：K20060403

Study on Synthesis of Levulinic Acid with Solid Acid SO_4--(2-)/TiO_2-ZrO_2 as Catalyst

以蔗糖为原料,固体SO42-/TIO2-zrO2为催化剂,以水为溶剂制备乙酰丙酸。研究了浸渍用硫酸浓度和催化剂焙烧温度对催化剂活性的影响,并探讨了不同反应条件及催化剂重复使用次数对乙酰丙酸得率的影响。用Xrd和nH3-TPd对使用前后的催化剂的结构和酸性进行了表征。实验结果表明,1.0 MOl/l硫酸浓度浸渍,550℃焙烧3 H的催化剂活性较强。在催化剂投加量为1.0 g,反应温度为190℃的条件下反应1 H,乙酰丙酸摩尔得率高达50.0%。回收的SO42-/TIO2-zrO2催化剂焙烧后在多次重复使用过程中仍然表现出较好的催化活性。Levulinic acid was prepared by solid SO42-/TiO2-ZrO2 catalyst from sucrose in water.The influence of impregnation concentration of sulfuric acid and calcinations temperature on catalyst activity was studied.The effect of different reaction conditions and catalyst reuse cycle on levulinic acid yield was investigated.The surfaces structure and acidity changes of the fresh and used catalysts were characterized by XRD and NH3-TPD.Experimental results indicated that the optimal catalyst could be obtained under the following conditions: 1mol/L impregnation concentration of sulfuric acid,550 ℃ of calcination temperature and 3 h of calcinations time.And the yield of levulinic acid was about 50.0%(molar percent) under the optimum conditions: amount of catalyst 1g,reaction temperature 190℃ and reaction time 1h.The recovered SO42-/TiO2-ZrO2 catalyst after calcination was found to remain high catalytic activity after being reused for several times.973科技计划项目(2010CB732201);国家自然科学基金项目(U0733001、50776035

Decomposition Kinetics of 5-Hydromethylfurfural Catalyzed by Solid Acids

利用小型高压反应釜测定了温度在423.15~463.15 k范围内无催化、固体酸SO42-/zrO2-TIO2和SO42-/zrO2催化下5-羟甲基糠醛的分解反应动力学数据。结果表明,反应时间、反应温度和固体酸催化剂显著影响了5-羟甲基糠醛的转化和乙酰丙酸的产率。用一级反应动力学方程拟合实验数据,得到本实验中无催化、固体酸SO24-/zrO2-TIO2和SO42-/zrO2催化下5-羟甲基糠醛分解反应的表观活化能分别为106.4、73.42和77.04 kJ/MOl。固体酸的加入可以大大提高了5-羟甲基糠醛的转化率,同时提高乙酰丙酸的产率。The data about the decomposition kinetics of 5-hydromethylfurfural(5-HMF) without any catalyst and catalyzed by solid acid SO2-4/ZrO2-TiO2 and SO2-4/ZrO2 at temperatures from 423.15 K to 463.15 K was obtained by conducting decomposition reaction in a small high-pressure batch reactor respectively.The results showed that the effects of reaction time,reaction temperature and solid acids on the 5-HMF conversion and the levulinic acid(LA) yield were significant.After fitting experimental data with the first-order kinetics equation,the evaluated apparent activation energy of 5-HMF decomposition was 106.4 kJ/mol without any catalyst,73.42 kJ/mol catalyzed with solid acid SO2-4/ZrO2-TiO2 and 77.04 kJ/mol with solid acid SO2-4/ZrO2,respectively.On the other hand,the solid acid catalysts are easy to be recycled and reusable.国家973计划资助项目(2010CB732201); 国家自然科学基金资助项目(U0733001;50776035

Conversion of Glucose into Butyl Levulinate over Solid Acid SO_4~(2-)/SnO_2 Catalyst

以沉淀-浸渍法合成的SO24-/SnO2固体酸为催化剂,于丁醇体系中催化葡萄糖转化合成乙酰丙酸丁酯。考察了不同反应条件以及催化剂的重复利用性对产物得率的影响,并利用Xrd和nH3-TPd对使用前后的催化剂的结构和酸性进行了表征。实验结果表明:当催化剂于500℃焙烧3 H,用量2.5%,反应温度200℃的条件下反应2 H时,乙酰丙酸丁酯的得率最高达33.1%(摩尔得率,下同);回收利用的催化剂经过焙烧后使用催化性能有所下降,由最初的33.1%下降至回用5次后的12.8%。Xrd和nH3-TPd分析结果表明,使用后催化剂的晶型结构仍保留,但酸强度和总酸量随重复使用次数增加却逐渐降低。Solid acid catalysts SO42-/SnO2 were prepared by precipitation and impregnation method for conversion of glucose to butyl levulinate in butanol.The effects of different reaction conditions and catalyst reuse on yields of butyl levulinate were also investigated.The surface structure and acidity of the fresh and reused catalysts were characterized by XRD and NH3-TPD.The results indicated that butyl levulinate yield of 33.1% could be obtained under the conditions of the catalyst calcined at 500 ℃ for 3 h,catalyst dosage 2.5 %,reaction temperature 200 ℃ and reaction time 2 h.And the catalytic performance for the reused catalysts after calcinations decreased from 33.1% to 12.8% after the fifth reuse.XRD and NH3-TPD results showed that crystallization structure of catalyst was preserved well after reuse,but the acid strength and total amounts of acid were decreased slightly with the increase of the number of reuse.国家973计划资助(2010CB732201); 国家自然科学基金资助项目(U0733001;50776035

Three-Dimensional Fluorescence Technique Coupled with Chemometric Second-Order Calibration Method for Simultaneous Detection of Thiabendazole and Fuberidazole in Red Wine

噻菌灵和麦穗宁是被广泛应用于预防治疗蔬菜水果病害的苯并咪唑类杀菌剂,二者的荧光光谱重叠严重,常规的荧光方法难以实现同时直接定量分析。本文将激发发射三维荧光技术分别与平行因子分析(PArAfAC)算法和交替三线性分解(ATld)算法相结合直接用于定量分析红葡萄酒中噻菌灵和麦穗宁的残留含量。当体系主成分数为3时,ATld和PArAfAC获得预测样品中噻菌灵和麦穗宁的平均回收率分别为(105.8±2.7)%、(102.1±10.1)%和(102.4±7.6)%、(103.1±9.5)%。本方法可简单、快速、经济、同时地分析红葡萄酒中噻菌灵和麦穗宁含量。Thiabendazole(TBZ) and fuberidazole(FBZ) are a class of benzimidazole fungicides and have been widely applied to protect vegetables and fruits.Conventional fl uorescence spectrum analysis method can hardly simultaneously detect TBZ and FBZ due to their serious spectral overlap.The simultaneous determination of TBZ and FBZ in red wine by excitation-emission fluorescence matrices(EEMs) combined with parallel factor analysis(PARAFAC) and alternating tri-linear decomposition(ATLD) was developed in this study.The prediction recoveries of TBZ and FBZ in the prediction set by PARAFAC and ATLD were(105.8±2.7)%,(102.1±10.1)% and(102.4±7.6)%,(103.1±9.5)% respectively,when the principal component number was 3.The method is simple,fast,low-cost,and suitable for the simultaneous determination of TBZ and FBZ in red wine.国家自然科学基金项目(21127005;21375111); 福建省科技重点项目(2009Y0046

Analysis of the Festo CLR Cylinder Performance

本文对Clr气缸工作性能的实验研究,目的是为了满足数控机床气动随行夹具中气缸的旋转夹紧要求。利用PlC控制器、气阀、气缸、传感器等元器件搭建实验平台。对主要实验步骤进行详细分析,通过实验论证fESTO Clr直线摆动夹紧气缸完全满足气动随行夹具工作要求。In this paper,we introduced an experiment to study the performance of pneumatic cylinder.In order to meet the requirements of the line/rotation clamping cylinder in CNC machine tools pneumatic clamp accompanied system.Using PLC controller,valves,cylinders,sensors and other components to build an experimental platform,the main experimental steps have been analyzed in details.Through the different kinds of experimental data demonstrating the Festo CLR line/rotation clamping cylinder is fit for the requirement of practical work

The application and research of the aircraft flexible fixture

主要研究气动、液压与电传技术在航空制造业中装配工艺中的应用。对研制出数控机床气动柔性夹紧系统,及其在飞机上零件加工上的应用进行了详细论述,包括柔性系统的机构组成、工作原理及PlC控制系统。该技术的突破为我国飞机数字化加工装配提供了参考价值,并将促进航空制造业的跨越式发展。The application of the pneumatic,hydraulic and power transmission for assembly process and equipment in aviation manufacturing industry is study.A novel type of CNC Aircraft Flexible Fixture machine system has been made out,and applied in manufacturing the aircraft parts.The system is including in architecture of the composition,working theory,PLC control system.It has a great signification of the manufacturing technology for aircraft digital processing,manufacturing and assembling,and promoting the developing of aircraft manufacturing

中国式学科评估:问题与出路

今年四月份,教育部学位与研究生教育发展中心(以下简称"教育部学位中心")邀请全国学位授予单位参加全国第四轮一级学科整体水平评估。随之,各个高校展开了一场大规模、高级别的学科评估申报及材料提交总动员。第四轮学科评估自发布起也引发了学界的广泛关注和热烈讨论。高等教育是中国崛起的思想发动机,关涉民族复兴的未来,而学科评估是近年来中国高等教育学科建设成就的集中展示,其意义和影响可谓深远。为了更好推进学科评估科学进行,特别是促进高等教育健康发展,《探索与争鸣》编辑部邀请全国