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Empirical Analysis on Rural Financial Development and Farmers' Income Increase in China 被引量:2
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作者 邹小芳 黎东升 《Agricultural Science & Technology》 CAS 2015年第4期774-776,781,共4页
The growth of farmer's incomes is cIoseIy reIated to rural finance. The research analyzed the dynamic reIationship of rural financial deveIopment, efficiency and farmer's incomes based on VAR modeI, and the resuIts ... The growth of farmer's incomes is cIoseIy reIated to rural finance. The research analyzed the dynamic reIationship of rural financial deveIopment, efficiency and farmer's incomes based on VAR modeI, and the resuIts indicated that the ex-pansion of rural finance wouId stimuIate farmer's incomes in a Iong term, and the growth of rural financial efficiency significantIy improves farmer's incomes in a short term, instead of a Iong term. Hence, it is necessary to introduce more credit funds and social funds to rural areas, deepen rural financial system reform and acceIerate use rate of Ioan capital and enhance guidance for farmers and township enterprises in use of Ioan capitals. 展开更多
关键词 Financlal scale in rural areas Rural financlal efficlency Farmer&#39 s in-comes ImpuIse response functlon
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Assessment of Land Comprehensive Carrying Capacity in Lin'an City
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作者 卢必慧 许红卫 《Agricultural Science & Technology》 CAS 2016年第12期2757-2762,共6页
According to regional characteristics and the actual situation in Lin ’an City, an evaluation index system of land comprehensive carrying capacity composed of three support subsystems (eco-environment, social and ec... According to regional characteristics and the actual situation in Lin ’an City, an evaluation index system of land comprehensive carrying capacity composed of three support subsystems (eco-environment, social and economic carrying capaci-ties) containing 22 evaluation indexes was established to evaluate the comprehen-sive carrying capacity of land resource in Lin’an City during 2005-2012. Meanwhile, based on the target data of overal land use plan, the level of land comprehensive carrying capacity was predicted at the end of the plan period (2020) .The results showed that land comprehensive carrying capacity had a significant growth in Lin ’an from 2005 to 2012, and the development trend was basical y sustainable. The sub-systems also had been greatly improved, in which the constant improvement of ec-ological environment carrying capacity made the largest contribution to the constant raising of land comprehensive carrying capacity. The degree of coordination between the systems was poor, in which eco-environment carrying capacity had the maxi-mum growth, far more than the social and economic carrying capacities. According to the land comprehensive carrying capacity in 2020, utilization of land resources in Lin&#39;an city can achieve sustainable development in general. Final y, proposals of im-proving comprehensive carrying capacity were put forward in terms of the enhance-ment of eco-environment protection, accelerating economic development and policy guidance. 展开更多
关键词 Land comprehensive carrying capacity Eco-environment carrying capac-ity Planning goal Lin&#39 an city
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A novel image encryption scheme based on Keplers third law and random Hadamard transform 被引量:3
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作者 罗玉玲 周戎龙 +2 位作者 刘俊秀 丘森辉 曹弋 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第12期146-159,共14页
In this paper, a novel image encryption scheme based on Keplers third law and random Hadamard transform is proposed to ensure the security of a digital image. First, a set of Kepler periodic sequences is generated to ... In this paper, a novel image encryption scheme based on Keplers third law and random Hadamard transform is proposed to ensure the security of a digital image. First, a set of Kepler periodic sequences is generated to permutate image data, which is characteristic of the plain-image and the Keplers third law. Then, a random Hadamard matrix is constructed by combining the standard Hadamard matrix with the hyper-Chen chaotic system, which is used to further scramble the image coefficients when the image is transformed through random Hadamard transform. In the end, the permuted image presents interweaving diffusion based on two special matrices, which are constructed by Kepler periodic sequence and chaos system. The experimental results and performance analysis show that the proposed encrypted scheme is highly sensitive to the plain-image and external keys, and has a high security and speed, which are very suitable for secure real-time communication of image data. 展开更多
关键词 Kepler&#39s third law random Hadamard transform interweaving diffusion security
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Improvement of the thermoelectric efficiency of pyrene-based molecular junction with doping engineering
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作者 Mohammad Farid Jamali Meysam Bagheri Tagani Hamid Rahimpour Soleimani 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第12期201-209,共9页
In this study, the thermoelectric properties of pyrene molecule doped with boron and nitrogen atom at different sites of molecule are investigated using density functional theory and none-equilibrium Greens function f... In this study, the thermoelectric properties of pyrene molecule doped with boron and nitrogen atom at different sites of molecule are investigated using density functional theory and none-equilibrium Greens function formalism in the linear response regime. Our calculations show that when the impurities are added to the edge of the molecule, the anti-resonant peaks will appear in the transmission diagram in the vicinity of the Fermi energy level. So it increases the thermoelectric figure of merit of the system in comparison with the one that the impurity is located in the center of molecule. Additionally, the seebeck coefficient signs are not the same among the B, N, and N & B doped devices, indicating that the types of the carriers can be changed with different types of doping. 展开更多
关键词 THERMOPOWER PYRENE density functional theory none-equilibrium Green&#39s function method DOPING
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染色体核型45,XO/46,XY患者的临床特点和Y染色体异常 被引量:15
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作者 茅江峰 张红 +6 位作者 徐洪丽 伍学焱 柴晓峰 黄炳昆 聂敏 王晓晶 田丹 《中华内分泌代谢杂志》 CAS CSCD 北大核心 2014年第7期582-586,共5页
目的 对染色体核型45,XO/46,XY患者的临床特点和Y染色体异常进行总结分析,以提高对此病的认识和诊疗水平.方法 对确诊患者的临床表现、性激素水平、治疗和随访、外周血淋巴细胞核型分析和Y染色体异常进行详细描述和总结.结果 (1)在200... 目的 对染色体核型45,XO/46,XY患者的临床特点和Y染色体异常进行总结分析,以提高对此病的认识和诊疗水平.方法 对确诊患者的临床表现、性激素水平、治疗和随访、外周血淋巴细胞核型分析和Y染色体异常进行详细描述和总结.结果 (1)在2008年1月至2013年1月期间,有7例确诊为45,XO/46,XY的患者在本科就诊.社会性别男性3例,女性4例;初诊年龄(14±3)岁(11 ~ 20岁).(2)患者均为身材矮小,伴多种特纳综合征的体征.(3)完全男性外生殖器1例,尿道下裂2例,女性阴蒂增大伴阴道尿道共同开口1例,完全女性外阴3例;通过查体和超声检查,有3例患者存在睾丸,1例同时存在睾丸和卵巢样性腺,1例为卵巢样性腺,2例未发现性腺.(4)有4例患者Y染色体存在明显的异常,其中例1经多重PCR技术和多重连接探针扩增技术,证实存在AZFb和AZFc片段缺失.(5)有4例患者接受人重组生长激素(rhGH)治疗.例1行右侧隐睾牵引固定术,例4行腹腔镜探查,找到并切除性腺组织,病理可见卵巢样成分.有3例患者接受性激素替代治疗.结论 45,XO/46,XY患者,具有矮小和其他特纳综合征的体征;半数患者存在睾丸而出现不同程度男性化.Y染色体异常,可能是导致嵌合体发生和生精障碍的重要原因.应用rhGH有助于身高增加,切除隐睾和无功能性腺组织,可能降低将来的生殖细胞肿瘤风险. 展开更多
关键词 特纳综合征 染色体核型 Y染色体
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