Combined the purpose and requirements of security and stability economic operations of the smart grid, a more comprehensive, risk indicator system of smart grid is established from five aspects of the smart grid strat...Combined the purpose and requirements of security and stability economic operations of the smart grid, a more comprehensive, risk indicator system of smart grid is established from five aspects of the smart grid strategic risk, external risk, financial risk, compliance risk, operational risks. On this basis, it is conducted smart grid risk assessments by integrated of the use of Borda sequence value method of the original risk matrix and AHP (hierarchical analysis method), in order to assess risk facing the smart grid and enterprise development more comprehensively, objectively and systematically and conveniently, and prompt companies continue to reduce risk, improve economic efficiency, continuously improve the targeted improvement measures and continue to improve the level of grid development.展开更多
运用先进的RNA反转录5'末端的转换模板技术(switching mechanism at 5'end of theRNA transcript,SMART),对鸡肝脏中的microRNA进行筛选分离,获取了新的microRNA序列。实验中,首先给microRNA加上Poly(A)尾巴,结合SMART技术反转...运用先进的RNA反转录5'末端的转换模板技术(switching mechanism at 5'end of theRNA transcript,SMART),对鸡肝脏中的microRNA进行筛选分离,获取了新的microRNA序列。实验中,首先给microRNA加上Poly(A)尾巴,结合SMART技术反转录得到microRNA的cDNA文库,再将长度适宜的片段连接到质粒,最后转化大肠杆菌克隆测序,获得了3条未知序列。经查证,这3条序列在miRBase中没有任何记录,其前体的二级结构预测都能形成茎环结构,符合microRNA前体的结构特征,为新发现的microRNA。展开更多
从安达盐碱地采收的蒙古柳种子在1/2MS固体培养基中培养,等到长出3~4片真叶的幼苗为实验材料,提取植株总RNA后分离mRNA,用SMART(Switching Mechanism At 5’end of RNA Template)方法合成蒙古柳cDNA,并连接到PYES2载体,用电转化法将重...从安达盐碱地采收的蒙古柳种子在1/2MS固体培养基中培养,等到长出3~4片真叶的幼苗为实验材料,提取植株总RNA后分离mRNA,用SMART(Switching Mechanism At 5’end of RNA Template)方法合成蒙古柳cDNA,并连接到PYES2载体,用电转化法将重组质粒转化到大肠杆菌感受态细胞JM109。经测定,原始文库滴度为6×10^6 cfu·mL^-1,重组率大于98%。插入片段的长度大部分在0.5~2.0 kb,平均长度为0.8 kb,构建了蒙古柳cDNA-pYES2大肠杆菌文库。展开更多
Since the “smart growth” was put forward in the late 90s, it has become an accepted design idea and concept in the field of urban design in the world, and has been deeply studied and applied. In order to better prom...Since the “smart growth” was put forward in the late 90s, it has become an accepted design idea and concept in the field of urban design in the world, and has been deeply studied and applied. In order to better promote “smart grown”, we set up an evaluation system, which consists of eleven indicators. In this paper, Oxford City and Fengzhen City are used as the objects of the study. Then smart growth evaluation model is established. The weight of the index is calculated by the entropy method. We use the model to evaluate the development plans of the two cities, from which to calculate the contribution of the indicators on the level of smart growth. Finally, we use the super-efficient data envelopment analysis model (DEA) to rank the importance of the indicators to the smart growth. The results show that the level of smart growth in Oxford is higher than that in Fengzhen. And “Multifunctional Building Density in Central City”, “The Density of Public Area in Central City” two indicators account for more than 36% weight. The contribution of the two indicators is also located in the top two indicators. Two cities focus on the direction of smart growth is also different. In summary, the differences between China and Western countries in urban planning are mainly focused on housing and public resources.展开更多
Based on Hamilton＇s principle, a new kind of fully coupled nonlinear dynamic model for a rotating rigid-flexible smart structure with a tip mass is proposed. The geometrically nonlinear effects of the axial, transver...Based on Hamilton＇s principle, a new kind of fully coupled nonlinear dynamic model for a rotating rigid-flexible smart structure with a tip mass is proposed. The geometrically nonlinear effects of the axial, transverse displacement and rotation angle are considered by means of the first-order approximation coupling （FOAC） model theory, in which large deformations and the centrifugal stiffening effects are considered. Three kinds of systems are established respectively, which are a structure without piezoelectric layer, with piezoelectric layer in open circuit and closed circuit. Several simulations based on simplified models are presented to show the differences in characteristics between structures with and without the tip mass, between smart beams in closed and open circuit, and between the centrifugal effects in high speed rotating state or not. The last simulation calculates the dynamic response of the structure subjected to external electrical loading.展开更多
This paper presents issues and trepidations associated with transferring from conventional methods of electricity monitoring and distribution to the cyberspace, especially in developing countries like Nigeria where cu...This paper presents issues and trepidations associated with transferring from conventional methods of electricity monitoring and distribution to the cyberspace, especially in developing countries like Nigeria where current approaches have failed to provide regular, reliable electric power. The Smart Power Grid is a developing concept already put to test, successfully, in very advanced countries. The implementation of the Smart Grid will include the deployment of many new technologies and multiple communication infrastructures. Connecting the electricity grid to the Internet can provide a lot of advantages in terms of control, data viewing and generation. However, in Nigeria, the proposal to transfer conventional methods to the Smart Grid has perhaps not hit the deck yet because of excessive focus on power generation, and because of the annotated reservations associated with the Internet, as the Smart Grid involves circulation and dispersal via inter-networking structures. This paper describes the key technologies that support Power Grid substation automation, summarizes the mode of implementation into the existing Nigerian electrical infrastructure and brings fore issues and mitigating approaches to provide a seamless and securitised transfer of the current power grid to the Smart Grid.展开更多
With the vigorous development of blockchain technology represented by</span><span style="font-family:""> Bitcoin, blockchain technology has gradually surpassed the era of programmable curren...With the vigorous development of blockchain technology represented by</span><span style="font-family:""> Bitcoin, blockchain technology has gradually surpassed the era of programmable currency and entered the era of smart contracts. Smart contracts are event-</span><span style="font-family:""> </span><span style="font-family:"">driven and stateful. With the in-depth development of blockchain technology, smart contracts use protocols and user interfaces to complete all steps of the contract process, allowing users to implement personalized code logic on the blockchain. Contract technology has the characteristics of decentralization, autonomy, observability, verifiability, and information sharing. It can effectively build programmable finance and programmable society, and is widely <span>used in digital payment, financial asset disposal, multi-signature contracts,</span> cloud computing, Internet of Things, sharing economy and other fields. First, it ex<span>plains the basic concepts, full life cycle, basic classification, basic structure, </span>key <span>technologies, development status and main technology platforms of smart</span> contracts;then discusses the application scenarios and development issues of smart contract technology, aiming to provide smart contract technology</span><span style="font-family:"">.</span><span style="font-family:""> The research and development provides reference.展开更多
Home security should be a top concern for everyone who owns or rents a home. Moreover, safe and secure residential space is the necessity of every individual as most of the family members are working. The home is left...Home security should be a top concern for everyone who owns or rents a home. Moreover, safe and secure residential space is the necessity of every individual as most of the family members are working. The home is left unattended for most of the day-time and home invasion crimes are at its peak as constantly monitoring of the home is difficult. Another reason for the need of home safety is specifically when the elderly person is alone or the kids are with baby-sitter and servant. Home security system i.e. HomeOS is thus applicable and desirable for resident’s safety and convenience. This will be achieved by turning your home into a smart home by intelligent remote monitoring. Smart home comes into picture for the purpose of controlling and monitoring the home. It will give you peace of mind, as you can have a close watch and stay connected anytime, anywhere. But, is common man really concerned about home security? An investigative study was done by conducting a survey to get the inputs from different people from diverse backgrounds. The main motivation behind this survey was to make people aware of advanced HomeOS and analyze their need for security. This paper also studied the necessity of HomeOS investigative study in current situation where the home burglaries are rising at an exponential rate. In order to arrive at findings and conclusions, data were analyzed. The graphical method was employed to identify the relative significance of home security. From this analysis, we can infer that the cases of having kids and aged person at home or location of home contribute significantly to the need of advanced home security system. At the end, the proposed system model with its flow and the challenges faced while implementing home security systems are also discussed.展开更多
文摘Combined the purpose and requirements of security and stability economic operations of the smart grid, a more comprehensive, risk indicator system of smart grid is established from five aspects of the smart grid strategic risk, external risk, financial risk, compliance risk, operational risks. On this basis, it is conducted smart grid risk assessments by integrated of the use of Borda sequence value method of the original risk matrix and AHP (hierarchical analysis method), in order to assess risk facing the smart grid and enterprise development more comprehensively, objectively and systematically and conveniently, and prompt companies continue to reduce risk, improve economic efficiency, continuously improve the targeted improvement measures and continue to improve the level of grid development.
文摘运用先进的RNA反转录5'末端的转换模板技术(switching mechanism at 5'end of theRNA transcript,SMART),对鸡肝脏中的microRNA进行筛选分离,获取了新的microRNA序列。实验中,首先给microRNA加上Poly(A)尾巴,结合SMART技术反转录得到microRNA的cDNA文库,再将长度适宜的片段连接到质粒,最后转化大肠杆菌克隆测序,获得了3条未知序列。经查证,这3条序列在miRBase中没有任何记录,其前体的二级结构预测都能形成茎环结构,符合microRNA前体的结构特征,为新发现的microRNA。
文摘从安达盐碱地采收的蒙古柳种子在1/2MS固体培养基中培养,等到长出3~4片真叶的幼苗为实验材料,提取植株总RNA后分离mRNA,用SMART(Switching Mechanism At 5’end of RNA Template)方法合成蒙古柳cDNA,并连接到PYES2载体,用电转化法将重组质粒转化到大肠杆菌感受态细胞JM109。经测定,原始文库滴度为6×10^6 cfu·mL^-1,重组率大于98%。插入片段的长度大部分在0.5~2.0 kb,平均长度为0.8 kb,构建了蒙古柳cDNA-pYES2大肠杆菌文库。
文摘Since the “smart growth” was put forward in the late 90s, it has become an accepted design idea and concept in the field of urban design in the world, and has been deeply studied and applied. In order to better promote “smart grown”, we set up an evaluation system, which consists of eleven indicators. In this paper, Oxford City and Fengzhen City are used as the objects of the study. Then smart growth evaluation model is established. The weight of the index is calculated by the entropy method. We use the model to evaluate the development plans of the two cities, from which to calculate the contribution of the indicators on the level of smart growth. Finally, we use the super-efficient data envelopment analysis model (DEA) to rank the importance of the indicators to the smart growth. The results show that the level of smart growth in Oxford is higher than that in Fengzhen. And “Multifunctional Building Density in Central City”, “The Density of Public Area in Central City” two indicators account for more than 36% weight. The contribution of the two indicators is also located in the top two indicators. Two cities focus on the direction of smart growth is also different. In summary, the differences between China and Western countries in urban planning are mainly focused on housing and public resources.
基金Project supported by the National Natural Science Foundation of China(Nos.10572119,10632030 and 50625516)the Program for New Century Excellent Talents in University(No.NCET-04-0958)+1 种基金the Major State Basic Research Development Program of China(973 Program)(No.2003CB716207)the Open Foundation of State Key Laboratory of Structural Analysis of Industrial Equipment of China
文摘Based on Hamilton＇s principle, a new kind of fully coupled nonlinear dynamic model for a rotating rigid-flexible smart structure with a tip mass is proposed. The geometrically nonlinear effects of the axial, transverse displacement and rotation angle are considered by means of the first-order approximation coupling （FOAC） model theory, in which large deformations and the centrifugal stiffening effects are considered. Three kinds of systems are established respectively, which are a structure without piezoelectric layer, with piezoelectric layer in open circuit and closed circuit. Several simulations based on simplified models are presented to show the differences in characteristics between structures with and without the tip mass, between smart beams in closed and open circuit, and between the centrifugal effects in high speed rotating state or not. The last simulation calculates the dynamic response of the structure subjected to external electrical loading.
文摘This paper presents issues and trepidations associated with transferring from conventional methods of electricity monitoring and distribution to the cyberspace, especially in developing countries like Nigeria where current approaches have failed to provide regular, reliable electric power. The Smart Power Grid is a developing concept already put to test, successfully, in very advanced countries. The implementation of the Smart Grid will include the deployment of many new technologies and multiple communication infrastructures. Connecting the electricity grid to the Internet can provide a lot of advantages in terms of control, data viewing and generation. However, in Nigeria, the proposal to transfer conventional methods to the Smart Grid has perhaps not hit the deck yet because of excessive focus on power generation, and because of the annotated reservations associated with the Internet, as the Smart Grid involves circulation and dispersal via inter-networking structures. This paper describes the key technologies that support Power Grid substation automation, summarizes the mode of implementation into the existing Nigerian electrical infrastructure and brings fore issues and mitigating approaches to provide a seamless and securitised transfer of the current power grid to the Smart Grid.
文摘With the vigorous development of blockchain technology represented by</span><span style="font-family:""> Bitcoin, blockchain technology has gradually surpassed the era of programmable currency and entered the era of smart contracts. Smart contracts are event-</span><span style="font-family:""> </span><span style="font-family:"">driven and stateful. With the in-depth development of blockchain technology, smart contracts use protocols and user interfaces to complete all steps of the contract process, allowing users to implement personalized code logic on the blockchain. Contract technology has the characteristics of decentralization, autonomy, observability, verifiability, and information sharing. It can effectively build programmable finance and programmable society, and is widely <span>used in digital payment, financial asset disposal, multi-signature contracts,</span> cloud computing, Internet of Things, sharing economy and other fields. First, it ex<span>plains the basic concepts, full life cycle, basic classification, basic structure, </span>key <span>technologies, development status and main technology platforms of smart</span> contracts;then discusses the application scenarios and development issues of smart contract technology, aiming to provide smart contract technology</span><span style="font-family:"">.</span><span style="font-family:""> The research and development provides reference.
文摘Home security should be a top concern for everyone who owns or rents a home. Moreover, safe and secure residential space is the necessity of every individual as most of the family members are working. The home is left unattended for most of the day-time and home invasion crimes are at its peak as constantly monitoring of the home is difficult. Another reason for the need of home safety is specifically when the elderly person is alone or the kids are with baby-sitter and servant. Home security system i.e. HomeOS is thus applicable and desirable for resident’s safety and convenience. This will be achieved by turning your home into a smart home by intelligent remote monitoring. Smart home comes into picture for the purpose of controlling and monitoring the home. It will give you peace of mind, as you can have a close watch and stay connected anytime, anywhere. But, is common man really concerned about home security? An investigative study was done by conducting a survey to get the inputs from different people from diverse backgrounds. The main motivation behind this survey was to make people aware of advanced HomeOS and analyze their need for security. This paper also studied the necessity of HomeOS investigative study in current situation where the home burglaries are rising at an exponential rate. In order to arrive at findings and conclusions, data were analyzed. The graphical method was employed to identify the relative significance of home security. From this analysis, we can infer that the cases of having kids and aged person at home or location of home contribute significantly to the need of advanced home security system. At the end, the proposed system model with its flow and the challenges faced while implementing home security systems are also discussed.
