1,175 research outputs found
The feasibility analysis of YX real-estate project
No full textYX项目是本人任职的房地产公司的第一个房产项目。借助该项目所处的绝版地段，为了将该项目打造成为厦门市高尚住宅中的精品楼盘，投资者走访了中国许多城市的类似楼盘，在吸收众家的精华后将该项目赋之行动。本人从项目的前期调查开始参与了项目投资可行性分析的工作。本文结合厦门房地产开发的特点，对该项目进行可行性研究和投资评价。文章主要包括以下四个部分： 第一章YX项目的背景分析。主要分为项目的地理位置、项目的形象定位、项目建筑经济指标等三个方面。 第二章YX项目市场分析。本章主要从宏观政策分析、供求分析、竞争分析、定价分析等方面来预测YX项目的市场均价。 `第三章YX项目的成本费用预估。本章通过对一般...YX was the first project that a real estate company had in Xiamen. Depending on the unique location, the company decided to make it one of the perfect projects. For this sake, the investor had visited many similar projects in China and deflowered them. The author joined in the work team for the feasibility analysis of the project. The thesis studies the investment feasibility of the project and ev...学位：工商管理硕士院系专业：管理学院工商管理教育中心_工商管理硕士(MBA)学号：20031526
Uniformly carbon-covered alumina and its surface characteristics
No full textUniformly carbon-covered alumina (CCA) was prepared via the carbonization of sucrose highly dispersed on the alumina surface. The CCA samples were characterized by XRD, XPS, DTA-TG, UV Raman, nitrogen adsorption experiments at 77 K, and rhodamine B (RB) adsorption in aqueous media. UV Raman spectra indicated that the carbon species formed were probably conjugated olefinic or polycyclic aromatic hydrocarbons, which can be considered molecular subunits of a graphitic plane. The N(2) adsorption isotherms, pore size distributions, and XPS results indicated that carbon was uniformly dispersed on the alumina surface in the as-prepared CCA. The carbon coverage and number of carbon layers in CCA could be controlled by the tuning of the sucrose content in the precursor and impregnation times. RB adsorption isotherms suggested that the monolayer adsorption capacity of RB on alumina increased drastically for the sample with uniformly dispersed carbon. The as-prepared CCA possessed the texture of alumina and the surface properties of carbon or both carbon and alumina depending on the carbon coverage
Squeezing properties of three-level atomic collective dipole phase quadrature operators with respect to three-level atomic coherent state
No full textWe add some useful formulations except for Ref. [4], then investigate the squeezing properties of the atomic collective dipole phase quadrature operators with respect to three-level atomic coherent state in detail. We mainly discuss two extreme cases concerning parameter alpha and beta and obtain some interesting conclusions.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000074837900005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)0ARTICLE4503-5102
Performance of a dipstick dye immunoassay for rapid screening of Schistosoma japonicum infection in areas of low endemicity.
No full textBACKGROUND: The dipstick dye immunoassay (DDIA), recently commercially available in the People's Republic of China (P.R. China), is a rapid and simple test to detect human antibodies against Schistosoma Japonicum. Its performance and utility for screening schistosome infection in low endemic areas is little known. We therefore carried out a cross-sectional survey in seven villages with low endemicity of schistosomiasis in P.R. China and assessed the performance and utility of DDIA for diagnosis of schistosomiasis. Stool samples were collected and examined by the Kato-Katz method and the miracidium hatching technique. Serum samples, separated from whole blood of participants, were tested by DDIA. RESULTS: 6285 individuals aged 6-65 years old participated in this study, with a prevalence of schistosomiasis of 4.20%. Using stool examination as a gold reference standard, DDIA performed with a high overall sensitivity of 91.29% (95% CI: 87.89-94.69%) and also a high negative predictive value, with a mean value of 99.29% (95% CI: 98.99-99.58%). The specificity of DDIA was only moderate (53.08%, 95% CI: 51.82-54.34%). Multivariate analysis indicated that age, occupation and history of schistosome infection were significantly associated with the false positive results of DDIA. CONCLUSIONS: DDIA is a sensitive, rapid, simple and portable diagnostic assay and can be used as a primary approach for screening schistosome infection in areas of low endemicity. However, more sensitive and specific confirmatory assays need to be developed and combined with DDIA for targeting chemotherapy accurately
Support properties of super-Brownian motions with spatially dependent branching rate
No full textAbstractWe consider a critical finite measure-valued super-Brownian motion X=(Xt,Pμ) in Rd, whose log-Laplace equation is associated with the semilinear equation (∂/∂t)u=12Δu−ku2, where the coefficient k(x)>0 for the branching rate varies in space, and is continuous and bounded. Suppose that suppμ is compact. We say that X has the compact support property, if Pμ⋃0⩽s⩽tsuppXsisbounded=1 for every t>0, and we say that the global support of X is compact if Pμ⋃0⩽s<∞suppXsisbounded=1. We prove criteria for the compact support property and the compactness of the global support. If there exists a constant M>0 such that k(x)⩾exp(−M||x||2) as ||x||→∞ then X possesses the compact support property, whereas if there exist constant β>2 such that k(x)⩽exp(−||x||β) as ||x||→∞ then X does not have the compact support property. For the global support, we prove that if k(x)=||x||−β(0⩽β<∞) for sufficiently large ||x||, then the maximum decay order of k for the global support being compact is different for d=1, d=2 and d⩾3: it is O(||x||−3) in dimension one, O(||x||−2(log||x||)−3) in dimension two, and O(||x||−2) in dimensions three or above
ENHANCED FLUORIMETRIC DETERMINATION OF EUROPIUM(III) WITH THENOYLTRIFLUOROACETONE AND 4,7-DIPHENYL-1,10-PHENANTHROLINE BY GADOLINIUM(III)
No full textChemistry, AnalyticalSCI(E)37ARTICLE81499-15132
Analysis of Factors Correlated with Postoperative Kinesiophobia in Patients with Cervical Spondylotic Myelopathy: A Cross-Sectional Survey
No full textGui-Qin Zhong,1,* Bi-Hua Lin,1,* Yu-Xuan Chen,2 Yan-Juan Lin,1 Chun-Mei Chen3 1Department of Neurosurgery Nursing, Fujian Medical University Union Hospital, Fuzhou, 350001, People’s Republic of China; 2College of Nursing, Fujian Medical University, Fuzhou, 350108, People’s Republic of China; 3Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, 350001, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yan-Juan Lin, Department of Neurosurgery Nursing, Fujian Medical University Union Hospital, No. 29, Xin Quan Road, Fuzhou, Fujian Province, 350001, People’s Republic of China, Tel +8613365910562, Email [email protected] Chun-Mei Chen, Department of Neurosurgery, Fujian Medical University Union Hospital, No. 29, Xin Quan Road, Fuzhou City, Fujian Province, 350001, People’s Republic of China, Tel +8613365910678, Email [email protected]: To investigate the prevalence of postoperative kinesiophobia in patients with cervical spondylotic myelopathy (CSM) and factors influencing the occurrence of kinesiophobia, to provide relevant basis for making clinical decisions for targeted interventions.Methods: We enrolled a total of 85 patients who underwent CSM surgery at two grade-A general public hospitals in Fujian Province between September 2021 and May 2022. We conducted a questionnaire survey using the Tampa Scale for Kinesiophobia (TSK) and the Zung Self-Rating Anxiety Scale (SAS). Patients evaluated pain using a visual analogue scale. We used one-way ANOVA and logistic multiple regression analysis to identify the relevant influencing factors.Results: The TSK score was (41.88± 4.46) in 85 postoperative CSM patients, 65 males and 20 females, and there were 31 patients under 40 years old, 54 patients over 40 years old, 58 patients below high school education and 27 patients above high school education, and among them, 81.17% were diagnosed with kinesiophobia. Age was positively correlated with TSK score (r = 0.379, P < 0.05) and therefore a risk factor for kinesiophobia (OR = 1.941, 95% CI = 1.021– 3.690). Additionally, the duration of the disease was a protective factor for kinesiophobia (OR = 0.179, 95% CI = 0.053– 0.605).Conclusion: Patients with CSM were at high risk of developing kinesiophobia postoperatively. Age and duration of the disease were factors influencing the occurrence of kinesiophobia in this group.Keywords: cervical spondylotic myelopathy, influencing factors, kinesiophobia, postoperativ
Inverse scattering of complex objects
No full text博士本論文擬模擬研究雙軸性掩埋在半空間與三層空間中複雜柱體(即包含雙軸性介質物體與完全導體)的電磁影像重建。設一未知的不均勻雙軸性介質複雜物體掩埋在其中一空間中(不論是在半空間或三層空間中)，吾人可在另外的空間中適當的安排一組具有不同入射和極化方向的無關聯波照射物體並量測在此之散射場，利用簡單的矩陣運算，我們就可以克服非線性和不良情況的發生的困擾，進而重建雙軸性複雜物體的介電常數分佈。在理論部份，主要是根據邊界條件導出一組非線性的積分方程組，接著利用以動差法與無關聯照射法計算其散射場，再根據電磁成像法則，重建出介質物體內部的介電常數。在數值結果方面，將證明理論部份的正確性。此結果亦顯示即使物體的介電常數很大時，我們能成功的重建介電常數的分佈。而且即使在在量測的散射場中有高斯雜訊的存在，依然可以得到良好的重建結果。除此之外，我們也會在文中探討雜訊對重建結果的影響程度。In this thesis, inverse scattering of a biaxial complex cylinder which is buried in half space and three layers structure is investigated. Dielectric cylinders of unknown permittivities are buried in one space and scatter a group of unrelated waves incident from another space where the scattered field is recorded. By proper arrangement of the various unrelated incident fields, the difficulties of ill-posedness and nonlinearity are circumvented, and the permittivity distribution can be reconstructed through simple matrix operations. For theoretical formulation, based on the boundary condition, a set of integral equations is derived and solved by the moment method as well as the unrelated illumination method. Numerical results show that the permittivity tensor distribution of the materials can be successfully reconstructed even when the permittivity is fairly large. Good reconstruction is obtained even in the presence of additive Gaussian noise in measured data. In addition, the effect of noise on the reconstruction result is also investigated.目錄
第一章 簡介…………………………………………………………. 1
1.1 研究動機與相關文獻……………………………………….1
1.2 本研究之貢獻………………………………………………7
1.3 內容簡述……………………………………………………8
第二章 電磁成像理論…………………………………………...…..9
2.1 理論推導…………………………………………………...10
2.1.1 正散射的理論推導 ……………………………………….10
2.2 數值方法……………………………………………………16
2.2.1 動差法於求解積分方程式之應用 …………………16
2.2.2應用無關聯照射法於逆散射問題……………………20
2.3 數值模擬結果 ……………………………………………26
2.4 結 論 ………………………………………………………39
第三章 三層介質中雙軸性介質物體之逆散射………………….…..40
3.1 理論推導…………………………………………………...41
3.2 數值方法……………………………………………………48
3.2.1 動差法於求解積分方程式之應用 …………………48
3.2.2 應用無關聯照射法於逆散射問題 …………………50
3.3 數值模擬結果 ……………………………………………55
3.4 結 論 ………………………………………………………68
第四章 本論文之總結………………………………………..…..…..69
附錄一 計算半空間格林函數的方法…………………..……………70
附錄二 矩陣[G1]~[G19]元素的計算…………………….……………73
附錄三 計算三層空間格林函數的方法 ……………………………77
附錄四 矩陣[G20]~[G27]元素的計算…………………………………83
參 考 文 獻 ………………………………………………….…...…85
Publication of C. J. Lin …………………………………………… 92
圖目錄 圖2-1 在半空間中，雙軸性複雜物體在X-Y平面上的示意圖 ..….24
圖2-2 無關聯照射法之波束聚焦法示意圖 ………………….……...25
圖2-3 第一個例子(長方形)的原始介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε)……………………………………..…29
圖2-3 第一個例子(長方形)的原始介電常數分佈 (c) ),(yx 3 ε ……………………………………………..……...30
圖2-4 第一個例子(長方形)的重建介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε……………………….………………..31
圖2-4 第一個例子(長方形)的重建介電常數分佈 (c) ),(yx 3 ε….………………………………………………...32
圖2-5 第二個例子(正方形)的原始介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε………………………….…………….33
圖2-5 第二個例子(正方形)的原始介電常數分佈 (c) ),(yx 3 ε…………………………………………………….34
圖2-6 第二個例子(正方形)的重建介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε…...……………………………………35
圖2-6 第二個例子(正方形)的重建介電常數分佈 (c) ),(yx 3 ε……………………………………………………...36
圖2-7 第一個例子(長方形)介電常數的重建誤差對雜訊階的模擬結果…………………………………………………………….37
圖2-8 第二個例子(正方形)介電常數的重建誤差對雜訊階的模擬結果…………….………………………………………………38
圖3-1 在三層空間中，雙軸性介質物體在X-Y平面上的示意圖………………………………………………………………41
圖3-2 第一個例子(長方形)的原始介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε………………………………..………58
圖3-2 第一個例子(長方形)的原始介電常數分佈 (c) ),(yx 3 ε……………………………………………………..59
圖3-3 第一個例子(長方形)的重建介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε………………………………………...60
圖3-3 第一個例子(長方形)的重建介電常數分佈 (c) ),(yx 3 ε.……………………………………..………………61
圖3-4 第二個例子(正方形)的原始介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε………………………………………...62
圖3-4 第二個例子(正方形)的原始介電常數分佈 (c) ),(yx 3 ε……………………………………………………...63
圖3-5 第二個例子(正方形)的重建介電常數分佈 (a) ),(yx 1 ε (b) ),(yx 2 ε………………………………………...64
圖3-5 第二個例子(正方形)的重建介電常數分佈 (c) ),(yx 3 ε………………………………………......................65
圖3-6 第一個例子(長方形)介電常數的重建誤差對雜訊階的模擬結果……………………………………………………………….66
圖3-7 第二個例子(正方形)介電常數的重建誤差對雜訊階的模擬結果……………………………………………………………….67學號: 890350043, 學年度: 9
Alternative valuation of work loss and productivity, Health and Productivity Management Center
No full textA CACU5-TYPE SAMARIUM-IRON PHASE STABILIZED BY ZIRCONIUM ADDITION
No full textPhysics, AppliedSCI(E)5ARTICLE83592-35946
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