The Development Strategy Of A Feight & Forwarding Co

我国加入WTO后，国际货运代理行业已逐步开放，这给本己竞争十分激烈的国际货运代理行业带来了新的竞争主体，而中国对外贸易的高速发展，又给货代企业的发展创造了巨大的市场，在这样一个机遇和威胁并存的关键时刻，研究货代企业的发展战略具有非常现实的意义。本文以A国际货代作为货代企业的代表，主要研究A货代的发展战略。 本文首先介绍货代企业的相关背景知识及A货代的基本情况，在此基础上指出公司发展中面临的主要问题。接着对A货代公司所处的环境进行分析，从地理、政治、经济、社会、科技几个方面分析了公司所处的宏观环境，用波特的五种竞争力模型分析了企业的竞争环境，从内部分析公司自身的优势和劣势。最后，论文在明确了公...With China’s entry into WTO,international freight and forwarding industry have been opened to the world entirely.It is the most important thing for the industry to grasp the opportunities and avoid the threats.The development strategy of A Feight & Forwarding Co.is studied in the thesis. Firstly,The background material of the industry and profile of A Feight & Forwarding Co. are given.And...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：20031501

Neighboring / Adjacent Coupling Relationship Between Urbanization and Farmland Safety Based on the Decoupling Theory

当前我国快速城市化推进对半城市化、农村等近程区域分布的耕地产生直接、强烈的影响,也对耕地安全造成强大的胁迫效应。为此,构建城市化-耕地安全综合评; 价指标体系,分别计算城市化指数和耕地安全胁迫指数,并基于脱钩理论方法对城市化水平与耕地安全水平的近程耦合关系进行量化分析。以江苏省连云港市为例,; 定量分析20002014年间其城市化水平与耕地安全的脱钩-耦合关系及耕地安全对城市化进程的响应程度。结果表明,; 20002014年间,连云港市城市化指数持续增高,耕地安全胁迫指数波动降低;; 20002007年为强脱钩、弱脱钩、扩张负脱钩及扩张脱钩的波动状态;; 20082014年呈更加强烈的波动状态,包括20082012年的强脱钩和2013年的扩张负脱钩状态,这反映出区域发展规划、土地利用规划和城市总体; 规划的实施对这一典型近程耦合系统产生了较大影响。研究期内连云港市城市化水平大幅提高,耕地安全所受胁迫程度不断降低,两者虽总体呈强脱钩关系,但仍需; 注意近程耦合结果波动性较大所揭示的不确定性问题,需要谨慎权衡城市化相关政策对耕地安全的影响。与过去的宏观、单一指标模型相比,基于近程耦合关系提出; 的多指标脱钩-耦合模型更具综合性,能更加全面、精细化分析快速城市化进程与耕地安全保护之间的复杂关系,为半城市化地区景观安全格局评估提供支撑,为城; 市化与耕地保护之间的协调发展提供决策支持。The current rapid development of urbanization in China has directly and; seriously affected farmlands distribution in its para-urbanized; neighboring /adjacent regions,and also posed severe stresses on safety; of these land. It is,therefore,essential to build up a comprehensive; urbanization and farmland safety assessment indicator system,work out; quantitatively urbanization index and farmland safety stress index,and; analyze quantitatively neighboring coupling relations between; urbanization and arable land safety based on the decoupling theory and; method. A case study was conducted of Lianyungang City of Jiangsu; Province to explore quantitatively coupling-decoupling relationship; between urbanization and farmland safety and response of farmland safety; to the progress of urbanization during the period from 2000 to 2014.; Results show that during the study period,urbanization index of; Lianyungang City increased steadily,while farmland safety stress index; fluctuated with a declining trend. Their relationship displayed a wavy; trend from 2000 to 2007,i.e. strong decoupling-weak decoupling-expanding; negative decoupling-expanding connection and a strong fluctuation curve; from 2008 to 2014,including strong decoupling during 2008-2012 and; expanding negative decoupling in 2013,which reflects strong impacts of; the implementation of the regional development,land use and city overall; programs on this typical neighboring / adjacent coupling system. During; the study period,Lianyungang City made a huge and steady progress in; urbanization, while reducing fluctuation of its stress on farmland; safety. Though the two posed a strong decoupling relationship,the; problem of uncertainty reflected in the huge fluctuation of the result; of the neighboring /adjacent decoupling calls for high attention,and the; influence urbanization had on farmland safety needs to be weighed; prudently. Compared to the macroscopic single indicator models used in; the past,the multi-index decoupling-coupling model built for the; neighboring coupling relationship is more comprehensive and capable of; analyzing the complex relationship between rapid urbanization and; protection of farmland safety in a more holistic and finer way.; Furthermore,it may provide theoretical support to landscape safety; assessment of para-urbanizd regions and to decision-making on harmonized; development of both urbanization and protection of farmland.国家自然科学基金; 厦门大学大学生创新创业训练计划; 中国科学院大学生创新实践训练计

The Development of a New Type of Medical Rehabilitation Brace for Lower Limbs

本文阐述了一种新型医用下肢康复支具的研制过程。该装置主要由承重装置、负重装置、负重调节装置以及压力检测装置等结构组成,具有调节、设定以及控制负重载荷等功能,可使行内固定术后的下肢骨折患者早期进行负重、行走功能锻炼,促进其骨折愈合及肢体功能康复,减少术后并发症,具有一定的实用价值。The paper expounded the development of a new type of medical rehabilitation brace for lower limbs. The device was mainly composed of different structures including the hip weight-bearing device, the foot weight-bearing device, the weight-bearing adjustment device and the pressure detection device. The brace was designed to allow patients to carry out weight-bearing exercises and walking exercises in early postoperative period after receiving internal fixation of lower limb fracture. It could also promote fracture healing and functional recovery of lower limbs and reduce postoperative complications, which is of certain clinical value

Time-resolved PL Spectra Study of Ordered Ga_(0.52)In_(0.48)P Alloys

【中文摘要】 在室温和低温液氮下 ,研究了有序和无序 Ga0 .52 In0 .4 8P的时间分辨发光谱。对实验结果的拟合表明 ,有序 Ga0 .52 In0 .4 8P的发光呈双指数规律衰退。其中快过程对应着有序区域上载流子的复合 ,慢过程则对应着有序区域和无序区域的空间分离中心上载流子的复合。无序 Ga0 .52 In0 .4 8P的发光在室温下呈单指数规律衰退。同时从低温下的时间分辨发光谱还可以看出有序样品的发光峰随着延迟时间的变长而蓝移 ,说明低温下在有序 Ga0 .52In0 .4 8P中存在着载流子从无序区域到有序区域的转移 【英文摘要】 The time resolved photoluminescence(TRPL) spectra of ordered and disordered Ga 0.52 In 0.48 P alloys grown by MOVPE were investigated.The least square fitting of the luminescence decay spectra of ordered alloys shows that there exist two exponential processes:The short lifetime process was corresponding to the high energy peak in PL spectra which is attributed to the recombination of the carriers in the ordered domains and the long lifetime process was corresponding to the low energy peak in the P...国家自然科学基金 (编号:69776011); 福建省自然科学基金 (编号:A9910004和 A0110007

Raman Spectra of Ga_xIn_(1-x)P(x=0.52)

采用室温下微区Raman散射方法 ,观测到了GaInP2 的LO双模行为和禁戒的TO模 ,由于晶格有序导致晶体对称性从Td 降低为C3v,从而使禁戒的TO模变为Raman活性。在所有的样品中都观测到了由晶格无序激活的DALA模。在有序样品中 ,除观测到了二级Raman散射峰LO1+LO2 以外 ,还观测到了由超晶格效应所导致的FLA折叠模和LO模的分裂。对LO模峰谷比b/a的分析表明 ,随着晶格有序度的增加 ,b/a值减小。这是因为 :一方面主要是由于禁戒的TO模变为Raman活性所引起的 ,另一方面 ,还可能有LO1模和LO2 模分裂的贡献。在实验上 ,可以用b/a值或FLA的强度来表示样品的有序度。Micro Raman scattering was employed at room temperature to investigate the properties of GaInP 2 alloys grown by MOVPE.The excitation wavelength is 514 5nm.The geometry is back scattering.GaInP 2 has CuPt like ordered structure along [111] which results in special optical properties such as the reduction of band gap,the doubling of PL peak,the temperature and excitation intensity dependence of photoluminescence,the splitting of valence band,etc.The Raman spectra show two mode behavior.In addition to the GaP like LO 1 mode(ordered samples at 383cm -1 , disordered sample at 381cm\+\{-1\}) and the InP like LO 2 mode around 360cm -1 ,the InP like TO 2 mode around 330cm -1 and the GaP like TO 1 mode hidden in LO 2 are observed.To alloy with zinc blende structure,the TO mode is forbidden with back scattering geometry under Raman selection rule.But to the CuPt like ordered structure,the TO mode becomes Raman active by the reason of symmetry reduction from T d to C 3v .At the Raman shift about 200cm -1 ,all the samples have the same disorder activated longitudinal acoustic bands(DALA).Besides the DALA,the ordered samples exhibit folded longitudinal acoustic mode (FLA) around 205cm -1 .This mode belongs to the L point folded to the Γ point as a result of the doubling of the unit cell of Brillouin zone.The intensity of the FLA peak is believed to be stronger with increasing the degree of order.In addition to the LO 1+LO 2 mode,the splitting of LO 2 into LO 2 and LO 2 ′ in ordered samples induced by superlattice effect resulting from the atom ordering is detected.In the ordered Raman spectra,from which the disordered's is subtracted, one can tell the FLA peak and the LO 2 ′ more clearly.In addition,there is another peak around 375cm\+\{-1\} which is probably the LO 1 ′ splitting from LO 1.By analyzing the PL peak energy and the b/a ratio of the valley between GaP like and InP like LO to the height of InP like LO 2,it exhibits that the value of b/a ratio reduces with the increase of ordering.On one hand,it is because that the forbidden TO becomes Raman active.On the other hand,it is probably due to the consequence of the splitting of LO 1 into LO 1 and LO 1 ′ and LO 2 into LO 2 and LO 2 ′.Besides the value of b/a ratio which represents the degree of order:the smaller the value of b/a ,the greater the ordering degree,the high intensity of FLA mode also corresponds to high degree of order.国家自然科学基金 ( 697760 11) ;; 福建省自然科学基金 ;; 上海技术物理所红外物理国家重点实验室基金资助项

Luminescence Decay of Partially Ordered (Al_xGa_(1-x))_(0.51)In_(0.49)P(x=0.29) Alloy

【中文摘要】 利用时间分辨光谱研究了 (AlxGa1-x) 0 51In0 4 9P合金的时间衰退过程 ,观察到载流子的转移过程和PL谱峰蓝移现象。这和变温发光谱中谱峰的Z 型依赖关系相吻合。这种现象明显表明了载流子的转移过程和子带的存在 ,证实了我们对超晶格带折叠效应的猜测。子带是由于有序结构的超晶格效应使导带的L带折叠到Γ带 ,载流子在时间衰退过程中从Γ带转移到L带。时间分辨光谱的蓝移现象同时也揭示了PL变温谱中谱峰反常蓝移现象的来源 【英文摘要】 In this paper, time-resolved photoluminescence(TRPL) was applied to study the optical properties of partially ordered quaternary (Al xGa 1-x) 0.51In 0.49P(x=0.29) alloy grown by MOVPE, the process of the transfer of carriers and the blue-shift of PL peak in (Al xGa 1-x) 0.51In 0.49P(x=0.29) alloy are directly observed.Both excitation-wavelength dependence of lifetime and excitation-intensity dependence of lifetime show wide distribution of carriers along bands.In TRPL spectra measured ...福建省自然科学基资助项目 (A0110007;A9910004

Raman scattering in Ga_xIn_(1-x)P and (Al_xGa_(1-x))_(0.51) In_(0.49) P alloys

测量了室温下三元GaxIn1-xP (x =0 .48)和四元 (AlxGa1-x) 0 .51In0 .4 9P (x =0 .2 9)合金背散射配置下的喇曼光谱。三元GaxIn1-xP的喇曼谱表现为双模形式 ,在DALA带上叠加了FLA模 ,在有序样品中观察到了类GaP的TO1模和类InP的TO2 模 ,类GaP的LO1模和类InP的LO2 模的分裂 ,表示有序度的b a比从无序样品的 0 .40变化到有序样品的 0 .1 0 ,有序样品b a比的降低是由于TO1模和LO1模分裂的影响所造成的。四元 (AlxGa1-x) 0 .51In0 .4 9P为三模形式 ,观察到了双峰结构的FLA模 ,由于Al组分的影响 ,类GaP的LO模成了类InP的LO模的肩峰。所有模式与经验公式吻合得很好。Raman scattering spectroscopy is applied to investigate the phonon modes in Ga xIn 1-x P (x=0.48) and (Al xGa 1-x ) 0.51 In 0.49 P (x=0.29) alloys in back scattering geometry. Two mode behavior in Ga xIn 1-x P is found. In Ga xIn 1-x P, the FLA is superimposed on the DALA band. In ordered samples, the GaP like TO 1 and the InP like TO 2 are observed.The splitting of LO 1(GaP like) and LO 2(InP like) are believed to be the superlattice effect of ordering. the b/a ratio ranges from 0.40(nominally disordered) to 0.10(ordered). The small b/a of ordered Ga xIn 1 x P is affected by the TO 1 mode and LO 2′ splitting of LO 1 mode. (Al xGa 1-x ) 0.51 In 0.49 P is characterized by its three mode behavior. the doubling of FLA is found. Due to the influence of Al composition, the GaP like LO mode becomes a shoulder of the InP like LO mode. All the phonon modes are consistent with the results of empirical expressions.国家自然科学基金!资助项目 ( 697760 11

Luminescence Decay on the Nominally Disordered GaInP Alloy

【中文摘要】 报道了名义上无序GaxIn1 xP(x =0 .5 2 )合金的发光瞬态过程 ,对样品在 77K和 30 0K下不同激发强度的时间衰退过程和时间分辨光谱的分析表明 ,这块名义上无序的合金也存在很微弱的有序度 .在 77K的高激发强度下 ,衰退过程符合单指数衰退规律 ,在低激发强度下 ,符合双指数衰退规律 ;而在 30 0K下 ,衰退过程都符合双指数衰退规律 .在 77K下的时间分辨光谱里观察到了PL谱峰的蓝移现象和载流子的转移过程 【英文摘要】 Luminescence decay and Time-Resolved Photoluminescence(TRPL) spectroscopy were applied to study the transient luminescence process of the nominally disordered GaInP alloy in this paper. The luminescence decay of GaInP alloy is temperature and excitation-intensity dependent. At 77 K and under high excitation intensity, the luminescence decay shows single exponential decay, while under low excitation intensity of 77 K or at 300 K, the luminescence decay shows double exponential decay. The analysis indicates t...福建省自然科学基金 (A9910004,A0110007)资助项