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侗族英雄—蒙能
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作者 丁中炎 《民族论坛》 1986年第3期77-80,共4页
明朝中叶,有一位称"蒙王"的侗族英雄,名叫蒙能。在正统元年至景泰六年(公元1436——1455年)的十九年里,他发动了湘、桂、黔、滇四省(区)毗邻地带侗、苗、瑶、壮、彝等各族人民的起义斗争,极大地震撼了朱明王朝。蒙能牺牲后,... 明朝中叶,有一位称"蒙王"的侗族英雄,名叫蒙能。在正统元年至景泰六年(公元1436——1455年)的十九年里,他发动了湘、桂、黔、滇四省(区)毗邻地带侗、苗、瑶、壮、彝等各族人民的起义斗争,极大地震撼了朱明王朝。蒙能牺牲后,他的儿子蒙聪与李天保继续领导斗争. 展开更多
关键词 景泰 副总兵 平溪卫 武冈 明史 明王朝 蒙能 靖州 宝庆府志 城步苗族自治县 城步县 明代宗 成化
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蒙能集团公司党建工作调研报告
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作者 武建强 《中文科技期刊数据库(全文版)社会科学》 2017年第2期148-149,共2页
自2016年4月份,内蒙古能源发电投资集团有限公司《党建工作考核实施方案(试行)》实施以来,历时半年,在一定程度上加强和改进了集团公司党的建设,提升了该集团公司党建工作实效。为深入推进考核实施方案的推行,结合季度考评情况和工作实... 自2016年4月份,内蒙古能源发电投资集团有限公司《党建工作考核实施方案(试行)》实施以来,历时半年,在一定程度上加强和改进了集团公司党的建设,提升了该集团公司党建工作实效。为深入推进考核实施方案的推行,结合季度考评情况和工作实际,针对尚存的问题和不足,建议采取一系列措施,促推该集团公司党建工作水平的持续提升。根据党委安排,结合企业实际,对所属27个分子公司及本部机关党委党建工作存在的问题进行了深入调研。 展开更多
关键词 蒙能集团 公司 党建工作 调研报告
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淮南矿业与蒙能集团签署项目合作协议
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《煤炭经济研究》 2015年第12期20-20,共1页
日前,淮南矿业集团公司与内蒙古能源发电投资集团有限公司项目合作签字仪式在煤矿宾馆会议中心举行。淮南矿业集团公司党委书记、董事长孔祥喜,内蒙古能源发电投资集团有限公司党委书记、董事长薛异旗出席仪式并致辞。淮南矿业副总经理... 日前,淮南矿业集团公司与内蒙古能源发电投资集团有限公司项目合作签字仪式在煤矿宾馆会议中心举行。淮南矿业集团公司党委书记、董事长孔祥喜,内蒙古能源发电投资集团有限公司党委书记、董事长薛异旗出席仪式并致辞。淮南矿业副总经理黄乃斌与内蒙古能源发电投资集团有限公司副总经理、 展开更多
关键词 淮南矿业 能源发电 蒙能 项目合作协议 汪洪
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蒙能集团十年磨一剑
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《内蒙古人大》 2016年第2期58-58,共1页
2015年,内蒙古能源发电投资集团有限公司全年累计完成发电量148亿千瓦时。历经10年,蒙能集团摘掉了"长期亏损"和"项目违规"这两顶帽子。多个新建项目陆续获得核准或进入国家、自治区发展规划,股权改革取得突破性进... 2015年,内蒙古能源发电投资集团有限公司全年累计完成发电量148亿千瓦时。历经10年,蒙能集团摘掉了"长期亏损"和"项目违规"这两顶帽子。多个新建项目陆续获得核准或进入国家、自治区发展规划,股权改革取得突破性进展,基本建设扎实推进,管理体制日益完善,各项工作稳步向好,为"十二五"发展画上了圆满的句号。经济效益创历史最好水平。抢发电量工作成效显著,积极抢发基数电量,多发基数电量11.78亿千瓦时,增加收益613万元。抢抓市场交易电量,累计获取大用户电量77.67亿千瓦时,增加火电利用小时2589小时。目前已拥有合作大用户30多家,月度稳定交易电量额度7亿千瓦时。燃料成本大幅降低,通过严控燃料采购价格。 展开更多
关键词 蒙能 交易电量 燃料成本 能源发电 利用小时 新建项目 发展规划 管理体制 十年
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Standard spectrum measurement and simulation of elemental capture spectroscopy log 被引量:8
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作者 武宏亮 李宁 +2 位作者 兰长林 孔祥忠 柴华 《Applied Geophysics》 SCIE CSCD 2013年第1期109-116,120,共9页
We have established a set of laboratory measurements which is used for capturing element gammma spectrum. Standard captured gamma ray spectra for ten elements, including Si, Ca, Fe, are obtained using the measurements... We have established a set of laboratory measurements which is used for capturing element gammma spectrum. Standard captured gamma ray spectra for ten elements, including Si, Ca, Fe, are obtained using the measurements for the first time in China. We also simulated the capture gamma ray spectra of the ten elements using Monte Carlo methodology with the same parameters of our experimental measurements. Comparing the experiment and simulation results with the data from the International Atomic Energy Agency's Nuclear Data Center, we obtained the standard captured gamma ray spectra of the ten elements, which, as calibration spectra, are used to calibrate the raw spectrum in data processing. This method solved the key problem during the conversion from the original measuring spectrum to the yield of each element in the data processing. The method can effectively improve the accuracy of the element yield calculation. 展开更多
关键词 Elemental capture spectroscopy log capture gamma ray spectrum Monte Carlo simulation
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国有企业精神文明建设的实践与思考 被引量:1
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作者 崔晓东 《现代国企研究》 2018年第12期288-288,287,共2页
内蒙古能源发电投资集团有限公司(以下简称蒙能集团)成立于2006年8月,是内蒙古自治区区属唯一以开发经营电力、热力、煤炭、水务、铁路等业务为主的国有独资综合性能源投资集团。蒙能集团自成立以来就高度重视精神文明建设工作,采取有... 内蒙古能源发电投资集团有限公司(以下简称蒙能集团)成立于2006年8月,是内蒙古自治区区属唯一以开发经营电力、热力、煤炭、水务、铁路等业务为主的国有独资综合性能源投资集团。蒙能集团自成立以来就高度重视精神文明建设工作,采取有力措施推动文明单位创建工作。2017年11月被中央精神文明建设指导委员会授予第五届'全国文明单位'荣誉称号。这是继2007年荣获'自治区文明单位'。 展开更多
关键词 蒙能 内蒙古自治区 能源投资 能源发电 精神文明建设 基层党组织 志愿服务活动 志愿者精神 党员队伍 思想道德水平
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Characterizing uncertainty in pavement performance prediction 被引量:2
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作者 孙璐 葛敏莉 +1 位作者 顾文钧 徐冰 《Journal of Southeast University(English Edition)》 EI CAS 2012年第1期85-93,共9页
Taking variability and uncertainty involved in performance prediction into account, in order to make the prediction reliable and meaningful, a distribution-based method is developed to predict future PSI. This method,... Taking variability and uncertainty involved in performance prediction into account, in order to make the prediction reliable and meaningful, a distribution-based method is developed to predict future PSI. This method, which is based on the AASHTO pavement performance model, treats predictor variables as random variables with certain probability distributions and obtains the distribution of future PSI through the method of Monte-Carlo simulation. A computer program PERFORM using Monte Carlo simulation is developed to implement the numerical computation. Simulation results based on pavement and traffic parameters show that traffic, surface layer material property, and initial pavement performance are the most significant factors affecting pavement performance. Once the distribution of future PSI is determined, statistics such as the mean and the variance of future PSI are readily available. 展开更多
关键词 pavement performance VARIABILITY PREDICTION Monte Carlo simulation
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酬金制是行业发展趋势
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作者 张化骞 《城市开发(物业管理)》 2008年第Z2期56-57,共2页
为了配合《物业管理条例》的实施,由国家发改委和建设部联合颁布的《物业服务收费管理办法》自2004年1月1日起施行,其中明确了物业管理收费有两种模式,一是包干制,一是酬金制。在笔者任职的内蒙古蒙能物业管理公司,多年来一直在大部分... 为了配合《物业管理条例》的实施,由国家发改委和建设部联合颁布的《物业服务收费管理办法》自2004年1月1日起施行,其中明确了物业管理收费有两种模式,一是包干制,一是酬金制。在笔者任职的内蒙古蒙能物业管理公司,多年来一直在大部分接管项目中采用酬金制形式,其中多为办公楼,运行效果都相当好。笔者认为,酬金制是物业管理行业的发展方向和必然选择。 展开更多
关键词 行业发展趋势 蒙能 服务企业 管理服务水平 国家发改委 收费标准 服务标准 企业规避 收费模式 发展方向
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Combined human growth hormone and lactulose for prevention and treatment of multiple organ dysfunction in patients with severe chronic hepatitis B 被引量:13
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作者 Hui-GuoDing JingShan BinZhang Hong-BoMa LiZhou RuiJin Yu-FenTan Li-XiangHe 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第19期2981-2983,共3页
AIM: To evaluate the efficiency and safety of combined recombinant human growth hormone (rhGH) and lactulose for treatment and/or prevention of multiple organ dysfunction in patients with chronic severe hepatitis B. M... AIM: To evaluate the efficiency and safety of combined recombinant human growth hormone (rhGH) and lactulose for treatment and/or prevention of multiple organ dysfunction in patients with chronic severe hepatitis B. METHODS: Forty-eight inpatients with chronic severe hepatitis B were randomly divided into rhGH group (n = 28)and control group (n = 20). In rhGH group, 4-4.5 IU of rhGH was injected intramuscularly once daily for 2-4 wk,and 100 mL of enema containing 30 mL of lactulose, 2 g of metronidazole and 0.9% saline was administered every 2 d for 2-4 wk. Their symptoms and complications were noted. Liver and kidney functions were analyzed by an Olympus analyzer. Serum GH, IGF-1, IGFBP1 and IGFBP3 were measured by ELISA.RESULTS: Clinical symptoms of 90% of these patients in rhGH group were obviously improved. The total effectiveness in rhGH group was better than that in control group (75% vs40%, P<0.05). After 2- and 4-wk treatment of rhGH respectively, serum albumin (26.1±4.1 vs 30.2±5.3,31.9±5.1 g/L), prealbumin (79.6±28.0 vs 106.6±54.4,108.4±55.0 g/L), cholesterol (76.3±16.7 vs 85.6±32.3,96.1±38.7 mg/dL), and IGFBP1 (56.8±47.2 vs 89.7±50.3ng/mL after 2 wk) were significantly increased compared to control group (P<0.05). However, serum GH was decreased. The increase of serum IGF1 and IGFBP3 after rhGH treatment was also observed.CONCLUSION: rhGH in combination with lactulose may be beneficial to the prevention and treatment of multiple organ dysfunction in patients with chronic severe hepatitis. 展开更多
关键词 Chronic severe hepatitis B Multiple organ dysfunction Human growth hormone Insulin-like growth factor-1 LACTULOSE
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On the formation and wind enhancement mechanisms of a Mongolian cyclone that caused a transmission line galloping trip in Gansu province 被引量:2
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作者 Shuanglong Jin Shuanglei Feng +4 位作者 Xiaolin Liu Bo Wang Zongpeng Song Wei Cui Cong Wang 《Atmospheric and Oceanic Science Letters》 CSCD 2021年第2期28-34,共7页
Influenced by strong winds associated with a southeastward-moving Mongolian cyclone,a severe transmission line galloping occurred in Baiyin City,Gansu Province,on 14 April 2020.This caused a tripping incident of the t... Influenced by strong winds associated with a southeastward-moving Mongolian cyclone,a severe transmission line galloping occurred in Baiyin City,Gansu Province,on 14 April 2020.This caused a tripping incident of the transmission line in this region.Based on the hourly,0.5°×0.5°,ECMWF ERA5 reanalysis data,this study investigated the formation mechanisms of the Mongolian cyclone and its associated strong winds.Results from the vorticity budget indicate that the convergence-related vertical stretching and the upward transport of cyclonic vorticity governed formation of the Mongolian cyclone in this event;whereas,tilting and export of cyclonic vorticity from the central region of the cyclone mainly decelerated the cyclone’s formation.The kinetic energy(KE)budget shows that the wind associated with the Mongolian cyclone was mainly enhanced by the positive work of the pressure gradient force.Unlike some typical strong wind events in Northwest China,during this event,no significant downward momentum transportation from the upper troposphere was found.The vertical transport of KE exerted a slightly favorable effect on the KE increase around the location where the transmission line galloping trip appeared.In contrast,the horizontal transport mainly caused an export of KE from this region,which applied an overall negative effect on the wind enhancement associated with the Mongolian cyclone. 展开更多
关键词 Mongolian cyclone Kinetic energy State grid Transmission line galloping trip
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Energy-Efficient Transmission Scheme for Mobile Data Gathering in Wireless Sensor Networks 被引量:2
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作者 刘丹谱 张铠麟 丁杰 《China Communications》 SCIE CSCD 2013年第3期114-123,共10页
Energy conservation in Wireless Sensor Networks (WSNs) has always been a crucial issue and has received increased attention in the recent years. A transmission scheme for energy-constrained WSNs is proposed in this pa... Energy conservation in Wireless Sensor Networks (WSNs) has always been a crucial issue and has received increased attention in the recent years. A transmission scheme for energy-constrained WSNs is proposed in this paper. The scheme, called MIHOP (MIMO and Multi-hop), combines cluster-based virtual MIMO and multi-hop technologies. The multihop mode is employed in transmitting data when the related sensors are located within a specific number of hops from the sink, and the virtual MIMO mode is used in transmitting data from the remaining sensor nodes. We compare the energy consumption of different transmission schemes and propose an algorithm for determining the optimal hop count in MIHOP. A controllable mobile sink that reduces the energy consumed in sensor transmission is also adopted for data collection. The theoretical analysis and the Monte Carlo simulation demonstrate that the proposed scheme significantly outperforms individual virtual MIMO, multi-hop technologies, and double-string networks in terms of energy conservation. The energy consumption levels under the MIHOP scheme are approximately 12.98%, 47.55% and 48.30% less than that under virtual MIMO schemes, multi-hop networks and doublestring networks, respectively. 展开更多
关键词 wireless sensor networks energyefficiency virtual MIMO multi-hop network mobile sink
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Diffusion Monte Carlo Study of Bond Dissociation Energies for BH2, B(OH)2, BCl2, and BCI
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作者 李会然 程新路 张红 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2012年第1期65-69,I0003,I0004,共7页
On basis of bond dissociation energies (BDEs) for BH2, B(OH)2, BCl2, and BCl, the diffusion Monte Carlo (DMC) method is applied to explore the BDEs of HB-H, HOB-OH, ClB-Cl, and B-Cl. The effect of the choice of ... On basis of bond dissociation energies (BDEs) for BH2, B(OH)2, BCl2, and BCl, the diffusion Monte Carlo (DMC) method is applied to explore the BDEs of HB-H, HOB-OH, ClB-Cl, and B-Cl. The effect of the choice of orbitals, as well as the backflow transformation, is studied. The Slater-Jastrow DMC algorithm gives BDEs of 359.1±0.12 kJ/mol for HB-H, 410.5±0.50 kJ/mol for HOB-OH, 357.8±1.46 kJ/mol for ClB-Cl, and 504.5±0.96 kJ/mol for B-Cl using B3PW91 orbitals and similar BDEs when B3LYP orbitals are used. DMC with backflow corrections (BF-DMC) gives a HB-H BDE of 369.9±0.12 kJ/mol which is close to one of the available experimental value (375.8 kJ/mol). In the case of HOB-OH BDE, the BF-DMC calculation is 446.04-1.84 k J/mol that is closer to the experimental BDE. The BF-DMC BDE for ClB-Cl is 343.2±2.34 kJ/mol and the BF-DMC B-Cl BDE is 523.3±0.33 kJ/mol, which are close to the experimental BDEs, 341.9 and 530.0 kJ/mol, respectively. 展开更多
关键词 Bond dissociation energy Diffusion Monte Carlo method Choice of orbitals Backflow transformation
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Molecular Simulation of CO2/H2 Mixture Separation in Metal-organic Frameworks: Effect of Catenation and Electrostatic Interactions 被引量:3
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作者 阳庆元 许青 +2 位作者 刘蓓 仲崇立 Smit Berend 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2009年第5期781-790,共10页
In this work grand canonical Monte Carlo simulations were performed to study gas separation in three pairs of isoreticular metal-organic frameworks (IRMOFs) with and without catenation at room temperature.Mixture comp... In this work grand canonical Monte Carlo simulations were performed to study gas separation in three pairs of isoreticular metal-organic frameworks (IRMOFs) with and without catenation at room temperature.Mixture composed of CO2 and H2 was selected as the model system to separate.The results show that CO2 selectivity in catenated MOFs with multi-porous frameworks is much higher than their non-catenated counterparts.The simulations also show that the electrostatic interactions are very important for the selectivity,and the contributions of different electrostatic interactions are different,depending on pore size,pressure and mixture composition.In fact,changing the electrostatic interactions can even qualitatively change the adsorption behavior.A general conclusion is that the electrostatic interactions between adsorbate molecules and the framework atoms play a dominant role at low pressures,and these interactions in catenated MOFs have much more pronounced effects than those in their non-catenated counterparts,while the electrostatic interactions between adsorbate molecules become evident with increasing pressure,and eventually dominant. 展开更多
关键词 SEPARATION CATENATION electrostatic interactions metal-organic frameworks molecular simulation
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Chemical composition and surface charge properties of montmorillonite 被引量:5
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作者 刘晓文 胡敏 胡岳华 《Journal of Central South University of Technology》 EI 2008年第2期193-197,共5页
The effects of the cell parameter and chemical composition on the surface charge properties of five kinds of different colour montmorillonites were studied. The results indicate that the surface isoelectric point(IEP... The effects of the cell parameter and chemical composition on the surface charge properties of five kinds of different colour montmorillonites were studied. The results indicate that the surface isoelectric point(IEP) of the montmorillonite shows positive correlation with the mass fractions of Fe203 and K20, but it has little relation to the mass fractions of other chemical compositions. At around pH=6.8, the surface zeta potential of the montmorillonite shows the negative relationship with the mass fractions of Fe203 and MgO, but it does not linearly correlate to the mass fractions of other chemical compositions. Cell parameter(bo) of the montmorillonite expresses negative linear relationship with mass fractions of K2O and Na2O, so does cosinβ with mass fractions of SlOE and Fe2O3. And there is no specific relationship between bo and IEP of different montmorillonites, but there is positive correlation between cosinβ and IEP of different montmorillonite samples. 展开更多
关键词 surface charge property zeta potential cell parameter MONTMORILLONITE
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Assessing Vulnerability to Drought Based on Exposure,Sensitivity and Adaptive Capacity:A Case Study in Middle Inner Mongolia of China 被引量:20
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作者 LIU Xiaoqian WANG Yanglin +2 位作者 PENG Jian Ademola K BRAIMOH YIN He 《Chinese Geographical Science》 SCIE CSCD 2013年第1期13-25,共13页
In this paper,we proposed a framework for evaluating the performance of ecosystem strategies prepared for enhancing vulnerability reduction in the face of hazards due to climate change.The framework highlights the pos... In this paper,we proposed a framework for evaluating the performance of ecosystem strategies prepared for enhancing vulnerability reduction in the face of hazards due to climate change.The framework highlights the positive effects of human activities in the coupled human and natural system(CHANS) by introducing adaptive capacity as an evaluation criterion.A built-in regional vulnerability to a certain hazard was generated based upon interaction of three dimensions of vulnerability:exposure,sensitivity and adaptive capacity.We illustrated the application of this framework in the temperate farming-grazing transitional zone in the middle Inner Mongolia of the northern China,where drought hazard is the key threat to the CHANS.Specific indices were produced to translate such climate variance and social-economic differences into specific indicators.The results showed that the most exposed regions are the inner land areas,while counties located in the eastern part are potentially the most adaptive ones.Ordos City and Bayannur City are most frequently influenced by multiple climate variances,showing highest sensitivity.Analysis also indicated that differences in the ability to adapt to changes are the main causes of spatial differences.After depiction of the spatial differentiations and analysis of the reasons,climate zones were divided to depict the differences in facing to the drought threats.The climate zones were shown to be similar to vulnerability zones based on the quantitative structure of indexes drafted by a triangular map.Further analysis of the composition of the vulnerability index showed that the evaluation criteria were effective in validating the spatial differentiation but potentially ineffective because of their limited time scope.This research will be a demonstration of how to combine the three dimensions by quantitative methods and will thus provide a guide for government to vulnerability reduction management. 展开更多
关键词 vulnerability assessment standardized precipitation index (SPI) EXPOSURE sensitivity adaptive capacity
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Laboratory investigation on effects of organic montmorillonite on performance of crumb rubber modified asphalt 被引量:1
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作者 TAN Zhi-hua WANG Ji-jing SHI Zhen-ning 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第12期3888-3898,共11页
In this paper,organic montmorillonite(OMMT)was added into crumb rubber modified asphalt(CRMA)to improve its high temperature performance,anti-aging performance and storage stability.The effects of different OMMT conte... In this paper,organic montmorillonite(OMMT)was added into crumb rubber modified asphalt(CRMA)to improve its high temperature performance,anti-aging performance and storage stability.The effects of different OMMT content on properties of CRMA were studied.The rutting factor obtained by dynamic shear rheological(DSR)test was adopted to evaluate the high-temperature performance.The creep stiffness and m value determined by the bending beam rheometer(BBR)test were employed to evaluate the low-temperature performance.The softening point,ductility,rutting factor before and after rolling thin film ovens test(RTFOT)and pressure aging vessel test(PAV)were compared to characterize the aging properties.Moreover,the segregation test after being reserved for 48 h and 7 d was conducted,and the softening point and rutting factor of upper and lower layers of segregation pipe were adopted to evaluate the storage stability.The results indicated that the high-temperature performance and anti-aging performance were developed with the increasing content of OMMT,while the low-temperature performance deteriorated.The storage stability was improved with the increasing content of OMMT before the content exceeded 4%,after which the storage stability declined.Taking account of all factors,it is suggested that the optimum content of OMMT is 3%−4%. 展开更多
关键词 crumb rubber modified asphalt organic montmorillonite high-temperature performance low-temperature performance storage stability.
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Precipitation Pulses and Soil CO_2 Emission in Desert Shrubland of Artemisia ordosica on the Ordos Plateau of Inner Mongolia,China 被引量:8
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作者 JIN Zhao DONG Yun-She +1 位作者 QI Yu-Chun M. DOMROES 《Pedosphere》 SCIE CAS CSCD 2009年第6期799-807,共9页
Precipitation is the major driver of ecosystem functions and processes in semiarid and arid regions. In such waterlimited ecosystems, pulsed water inputs directly control the belowground processes through a series of ... Precipitation is the major driver of ecosystem functions and processes in semiarid and arid regions. In such waterlimited ecosystems, pulsed water inputs directly control the belowground processes through a series of soil drying and rewetting cycles. To investigate the effects of sporadic addition of water on soil CO2 effux, an artificial precipitation event (3 mm) was applied to a desert shrub ecosystem in the Mu Us Sand Land of the Ordos Plateau in China. Soil respiration rate increased 2.8 4.1 times immediately after adding water in the field, and then it returned to background level within 48 h. During the experiment, soil CO2 production was between 2 047.0 and 7 383.0 mg m^-2. In the shrubland, soil respiration responses showed spatial variations, having stronger pulse effects beneath the shrubs than in the interplant spaces. The spatial variation of the soil respiration responses was closely related with the heterogeneity of soil substrate availability. Apart from precipitation, soil organic carbon and total nitrogen pool were also identified as determinants of soil CO2 loss in desert ecosystems. 展开更多
关键词 desert shrub ecosystem Mu Us sand land soil respiration response water addition
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Energy-Efficient Distributed Lifetime Optimizing Scheme for Wireless Sensor Networks
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作者 吕伟杰 白栋霖 《Transactions of Tianjin University》 EI CAS 2016年第1期11-18,共8页
In this paper, a sensing model for the coverage analysis of wireless sensor networks is provided. Using this model and Monte Carlo method, the ratio of private range to sensing range required to obtain the desired cov... In this paper, a sensing model for the coverage analysis of wireless sensor networks is provided. Using this model and Monte Carlo method, the ratio of private range to sensing range required to obtain the desired coverage can be derived considering the scale of deployment area and the number of sensor nodes. Base on the coverage analysis, an energy-efficient distributed node scheduling scheme is proposed to prolong the network lifetime while maintaining the desired sensing coverage, which does not need the geographic or neighbor information of nodes. The proposed scheme can also handle uneven distribution, and it is robust against node failures. Theoretical and simulation results demonstrate its efficiency and usefulness. 展开更多
关键词 wireless sensor networks lifetime optimization COVERAGE RELIABILITY Monte Carlo method
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Reconsider Confucius' enlightening reflection: Implications on heuristic teaching
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作者 ZHANG Jian-wen MO Rui 《Sino-US English Teaching》 2007年第7期32-38,共7页
Western heuristic teaching method was originated from Socrates who initiated the teaching mode of "teachers ask, students answer". A distinctive feature of this mode was that teachers were the decisive factor in the... Western heuristic teaching method was originated from Socrates who initiated the teaching mode of "teachers ask, students answer". A distinctive feature of this mode was that teachers were the decisive factor in the process of teaching and learning, who raised the questions at the very beginning and gave conclusions in the end. On the contrary, oriental style of heuristic teaching method based itself on the principle that students put forward their puzzles and then asked the teachers for advice. This paper will reconsider Confucius enlightening reflection and probe into how to develop students' ability of thinking by questioning strategies in the heuristic teaching methodology. 展开更多
关键词 CONFUCIUS enlightening reflection heuristic teaching THINKING QUESTIONING
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Physical Layer Security in MIMO Wiretap Channels with Antenna Correlation 被引量:4
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作者 Gangcan Sun Zhuo Han +2 位作者 Jingbo Jiao Zhongyong Wang Dagang Wang 《China Communications》 SCIE CSCD 2017年第8期149-156,共8页
To investigate the impact of antenna correlation on secrecy performance in MIMO wiretap channels with Nakagami-m fading, the expressions of secrecy outage probability and positive secrecy probability were derived. Div... To investigate the impact of antenna correlation on secrecy performance in MIMO wiretap channels with Nakagami-m fading, the expressions of secrecy outage probability and positive secrecy probability were derived. Diversity order and array gain were also achieved for further insight. The study was based on the information theory that physical layer security can be guaranteed when the quality of the main channel is higher than that of the eavesdropper's channel. Monte Carlo simulations well validated the numerical results of analytic expressions. It was shown that antenna correlation is detrimental to secrecy performance when average SNR of the main channel is at medium and high level. Interestingly, when average SNR of the main channel reduces to low level, the effect of antenna correlation becomes benefi cial to secrecy performance. 展开更多
关键词 physical layer security antenna correlation wiretap channels outage probability Nakagami-m fading
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