This article discusses Islamic Banking System and its mode of leasing in the light of the objectives of Shari＇ah. It explores that the objectives behind the introduction of Islamic finance and banking system were the...This article discusses Islamic Banking System and its mode of leasing in the light of the objectives of Shari＇ah. It explores that the objectives behind the introduction of Islamic finance and banking system were the elimination of capitalist banking interest, exploitation of poor segment of the society and the establishment of an economic system which may lead to sustain a balance economic order and social justice. In this context, it intends to analyze the mode of leasing provided by Islamic Banking system in the light of the objectives of Shari＇ah and discloses that although Islamic Banking system is based on the principle of mudarbah, musharkah and Ijarah and deals with the customers in that context, yet apparently, the effects of these transactions are not much different from capitalist modes due to same consequences and effects of these transactions. It thus, provides a comparative analysis of the issue, i.e., mode of leasing at both Islamic and capitalist Banks. It argues that a common man can not avail Islamic financing/leasing if he lacks financial resources. If a poor person tries to purchase something by way of ijarah through Islamic Banking finance, he does not find any difference in the payment of the total cost between capitalist mode of leasing and Islamic mode of ijarah. Hence, this article concludes that although Islamic financing achieved a remarkable development among the Muslims, yet there is a need to revise the policy and system of Islamic financing in the light of the objectives of Shari＇ah. It also concludes that the mode of leasing provided at Islamic Banks does not accomplish the objectives of its establishment which is public interest. At present, this system is unable to assist the poor segment of the society or to provide ease to them.展开更多
In current researches on spectrum leasing, Common model and Property-right model are two main approaches to dynamic spectrum sharing. However, Common model does not consider the obligation of Primary System (PS) and i...In current researches on spectrum leasing, Common model and Property-right model are two main approaches to dynamic spectrum sharing. However, Common model does not consider the obligation of Primary System (PS) and is unfair to Secondary System (SS), while the cooperation based on Property-rights model has problems on its feasibility. This paper proposes a novel system model, in which a Cost-Prediction scheme for Spectrum Leasing (CPSL scheme) is designed to forecast the cost that PS would pay for leasing spectrum. Cost Function is introduced as a criterion to evaluate the potential cost of spectrum leasing for PS. The simulation results show that compared with Common model based scheme, CPSL scheme substantially improves the QoS of the delay-sensitive traffic in SS at the cost of a small degradation of PS performance.展开更多
According to the property-rights model of cognitive radio, primary users （PUs） who own the spectrum resource have the right to lease part of spectrum to secondary users （SUs） in exchange for appropriate profit. In...According to the property-rights model of cognitive radio, primary users （PUs） who own the spectrum resource have the right to lease part of spectrum to secondary users （SUs） in exchange for appropriate profit. In this paper, we propose a pricing-based spectrum leasing framework between one PU and multiple SUs. In this scenario, the PU attempts to maximize its utility by setting the price of spectrum. Then, the selected SUs have the right to decide their power levels to help PU s transmission, aiming to obtain corresponding access time. The spectrum leasing problem can be cast into a stackelberg game, where the PU plays the seller-level game and the selected SUs play the buyer-level game. Through analysis based on the backward induction, we prove that there exists a unique equilibrium in the stackelberg game with certain constraints. Numerical results show that the proposed pricing-based spectrum leasing framework is effective, and the performance of both PU and SUs is improved, compared to the traditional mechanism without cooperation.展开更多
The dynamics of the globalized multimedia sources and request demands, which requires high computations and bandwidths, makes the IT infrastructure a challenge for live streaming applications. Migrating the system to ...The dynamics of the globalized multimedia sources and request demands, which requires high computations and bandwidths, makes the IT infrastructure a challenge for live streaming applications. Migrating the system to a geo-distributed cloud and leasing servers is an ideal alternative for supporting large-scale live streaming applications with dynamic contents and demands. The new challenge of multimedia live streaming applications in a geo-distributed cloud is how to efficiently arrange and migrate services among different cloud sites to guarantee the distribute users’ experience at modest costs. This paper first investigates cloud leasing policies for live streaming applications and finds that there is no detailed algorithm to help live streaming applications arrange and migrate services among different cloud sites. Then, we present a quality of service（Qo S） guarantee cost-effective cloud leasing policy for live streaming applications. Meanwhile, we design a genetic algorithm（GA） to deal with the leasing policy among cloud sites of diverse lease prices. Experimental results confirm the effectiveness of the proposed model and the efficiency of the involved GA.展开更多
With the economic development and financial product innovation, financial leasing more and more countries attention. China is faced with the transformation of economic development model, the upgrading of international...With the economic development and financial product innovation, financial leasing more and more countries attention. China is faced with the transformation of economic development model, the upgrading of international status, the development of financial leasing imperative. On the one hand, financial leasing will help China to continuously improve its technological level and continuously upgrade its production equipment. On the other hand, financial leasing will help the development of small and medium-sized enterprises. providing a simple and convenient channel for SME investment and financing, Economic vitality, ease of employment pressure. The purpose of this paper is to point out the problems existing in the finance leasing taxation, draw lessons from the international experience and put forward the suggestions to improve the financial leasing in a rapid, healthy and orderly manner and make a great contribution to the economic construction.展开更多
Finance lease business has become an important financial instrument for many enterprises at present. At the same time, with the expansion of the scale of securitization of leased assets, more and more financial report...Finance lease business has become an important financial instrument for many enterprises at present. At the same time, with the expansion of the scale of securitization of leased assets, more and more financial reports of finance lease companies (lessors) are disclosed, and the provisions of lease standards for lessors are relatively few. This paper aims to study the lessor's accounting and tax treatment process, and put forward some suggestions on the lessor's accounting treatment.展开更多
According to the property rights model of cognitive radio,primary users who own the spectral resource have the right to lease or trade part of it to secondary users in exchange for appropriate profit.In this paper,an ...According to the property rights model of cognitive radio,primary users who own the spectral resource have the right to lease or trade part of it to secondary users in exchange for appropriate profit.In this paper,an implementation of this framework is investigated,where a primary link can lease the owned spectrum to secondary nodes in exchange for cooperation （relaying）.A novel pricing model is proposed that enables the trading between spectrum and cooperation.Based on the demand of secondary nodes,the primary link attempts to maximize its quality of service （QoS） by setting the price of spectrum.Taking the price asked by primary link,the secondary nodes aim to obtain most profits by deciding the amount of spectrum to buy and then pay for it by cooperative transmission.The investigated model is conveniently cast in the framework of seller/buyer （Stackelberg） games.Analysis and numerical results show that our pricing model is effective and practical for spectrum leasing based on trading spectral resource for cooperation.展开更多
The urban realty market is very complicated with wide-ranging contents and manyproblems. in the past, we focused our research mainly on the land auction, land rental inbatches, public bidding and the development of ma...The urban realty market is very complicated with wide-ranging contents and manyproblems. in the past, we focused our research mainly on the land auction, land rental inbatches, public bidding and the development of mass plots of land in the coastal open cit-ies, while neglecting the research on the real estate leasing and structural readjustment ofurban land use and housing Therefore. we have selected two typical areas in Beijing foron-the -spot investigation. One is Qianmen ——the most prosperous area in Beijingwith all kinds of big, medium-sized and small enterprises of public, collective and privateownership, and with brisk commercial activities and busy real estate leasing business. Theother area is the Zhongguancun ——the key section of the experimental area in Beijing forthe development of new technology and industries. In the past few years there have set upnew and high-tech enterprise groups with multiple subjects, Various categories and acombination of technology, industry and trade, which represent the direction for the de-velopment of science, technology and new productivity. Along with the mass explosivedevelopment of a large number of companies, the structure of the land use in that area haschanged dramatically. the leasing and transaction of the real estate are very active the re,and the rents and prices of land and housing have come up to the highest in Beijing.展开更多
This research contributes to the theory of assessing aircraft leasing efficiency from an airline’s perspective by revising factors influencing leasing decisions and developing an integrated approach to modelling airc...This research contributes to the theory of assessing aircraft leasing efficiency from an airline’s perspective by revising factors influencing leasing decisions and developing an integrated approach to modelling aircraft leasing decisions.Despite the extensive research on aircraft leasing appraisal,modelling tools for informed decisionmaking require constant updates regarding the attributes to be included and approaches to uncertainty conditions.The key contribution of this research supports the ongoing discussion of the practical deployment of management science in the aircraft leasing field,aiding the industry in quickly adapting to changing market conditions.The research includes brief analyses of key performance indicators in the aircraft leasing industry to identify trends and a literature review to justify the current factors influencing leasing decisions.It is demonstrated that integrating operational modelling into aircraft leasing assessment can provide a data-driven justification for the importance of new,fuel-efficient aircraft in achieving sustainability goals and maintaining operational profitability.The sensitivity analysis further illustrates the robustness of the model and solution,and its capacity to generate scenario assessments reflecting varying conditions such as changes in demand,taxes,fuel costs,and other airline expenses.The simulation of a hypothetical example based on data from airlines’business intelligence platforms reveals that significant initial fixed leasing payments,including taxes,can negatively impact an airline’s ability to modernise its fleet through leasing.Fuel efficiency,zero customs duties and VAT on aircraft leasing,and sufficient capital to cover fixed leasing costs are the main drivers stimulating fleet modernisation and can be justified by a slight increase in expected profits.展开更多
Although the term“green leasing”is not yet well defined,its primary purpose is clear.With an aim to create a collaborative environment through legal provisions between a building owner and a tenant,green leasing may...Although the term“green leasing”is not yet well defined,its primary purpose is clear.With an aim to create a collaborative environment through legal provisions between a building owner and a tenant,green leasing may ultimately help resolve the energy paradox in tenanted properties.Issues surrounding split-incentives are driven by a mismatch between owners’capital expenditures on improving building energy efficiency and an uncertainty of tenant or occupant behavior that might affect a building’s energy consumption.Though some countries have started to develop guidelines promoting the adoption of green leasing,especially in government buildings and commercial real estate,implementation has not been overly successful globally.This study has two focuses,the first of which is to compare green leasing guidelines from various countries and to suggest six comprehensive categories of green leasing components:management relationships,information sharing,certificates,legal stipulations,financial factors,and operation.The second core area of research places government-tenanted properties’lease agreement contracts.The goal is to find any evidence in a legal condition between a building owner and a tenant,in this case federal government,to improve building energy efficiency with less environmental impact in the United States.The findings of the study indicated 41 out of 400 leases had green clauses.Three out of six categories proposed in this study were found in the U.S.government-tenanted properties,while the other three types were not shown.The findings of this study also suggest categories of green leasing clauses can contribute to defining green leasing and provide empirical evidence of green leasing in government-tenanted properties.Ultimately,this study produces arguments for possible reasoning behind the employment of some green lease categories but the lack of use of others,specifically in the U.S.office market and government-tenanted buildings.展开更多
The participation of wind farms in the former energymarket faces challenges such as power fluctuations and energy storage construction costs.To this end,this paper proposes a joint energy storage operation scheme for ...The participation of wind farms in the former energymarket faces challenges such as power fluctuations and energy storage construction costs.To this end,this paper proposes a joint energy storage operation scheme for multiple wind farms based on a leasingmodel,which assistswind farms in bidding for participation in the former energy market through leasing services,thereby enhancing energy storage efficiency and maximizing economic benefits.In this paper,based on theWeibull probability distribution to portray the uncertainty of wind power,and considering the lifetime capacity loss caused by charging and discharging of energy storage,we construct a bilateral transaction model aiming at maximizing the multi-objective revenue of wind farms and shared energy storage.The trading strategy is designed based on the Stackelberg game framework and solved jointly by the improved genetic algorithm and interior pointmethod.By exploring the effects of different lease price intervals on the overall systemperformance,and analyzing the systemstate undermultiple charging and discharging scenarios.The results show that a reasonable lease price range can significantly improve the energy storage system utilization and wind farmrevenue.Theprogramprovides new ideas to enhance the economic benefits of wind farms and promote the application of shared energy storage,and promotes the wide application of shared energy storage systems.展开更多
The Optical Transport Network(OTN)is a protocol for sending network messaging over optical fiber networks.Intelligent optical networks provide an ideal solution for high-bandwidth services.Currently,data encryption sc...The Optical Transport Network(OTN)is a protocol for sending network messaging over optical fiber networks.Intelligent optical networks provide an ideal solution for high-bandwidth services.Currently,data encryption schemes for OTN typically rely on mathematical problems such as elliptic curve cryptography or discrete logarithms,which are vulnerable to attacks by quantum computers.This paper investigates a quantum-secure OTN Framework that integrates Quantum Key Distribution(QKD)and Post-Quantum Cryptography(PQC)technologies,enabling OTN leased lines to resist quantum attacks.This framework can provide users with highly secure quantum-encrypted OTN leased lines services.展开更多
With the development of Internet of Things technology,intelligent door lock devices are widely used in the field of house leasing.In the traditional housing leasing scenario,problems of door lock information disclosur...With the development of Internet of Things technology,intelligent door lock devices are widely used in the field of house leasing.In the traditional housing leasing scenario,problems of door lock information disclosure,tenant privacy disclosure and rental contract disputes frequently occur,and the security,fairness and auditability of the housing leasing transaction cannot be guaranteed.To solve the above problems,a blockchain-based proxy re-encryption scheme with conditional privacy protection and auditability is proposed.The scheme implements fine-grained access control of door lock data based on attribute encryption technology with policy hiding,and uses proxy re-encryption technology to achieve auditable supervision of door lock information transactions.Homomorphic encryption technology and zero-knowledge proof technology are introduced to ensure the confidentiality of housing rent information and the fairness of rent payment.To construct a decentralized housing lease transaction architecture,the scheme realizes the efficient collaboration between the door lock data ciphertext stored under the chain and the key information ciphertext on the chain based on the blockchain and InterPlanetary File System.Finally,the security proof and computing performance analysis of the proposed scheme are carried out.The results show that the scheme can resist the chosen plaintext attack and has low computational cost.展开更多
In answering the questions as whether China's rising labor price and ageing workforce have affected rural land leasing and whether these factors have any joint effect,we have employed RCRE data of the Ministry of ...In answering the questions as whether China's rising labor price and ageing workforce have affected rural land leasing and whether these factors have any joint effect,we have employed RCRE data of the Ministry of Agriculture to carry out an empirical analysis and the result indicates that labor price hike has significant positive effects on both the land lease-in and lease-out of rural households,i.e.labor price hike will help increase the land leasing of rural households.At the level of ageing workforce,our empirical results indicate that ageing workforce does not create any significant impact on rural land leasing market no matter for land lease-in or lease-out in overall samples,plain regions and mountainous regions.In our empirical analysis on whether ageing workforce will intensify or weaken the effects of labor price hike on rural land leasing market,the regression result also indicates that there is no significant effect from a statistical perspective.展开更多
The main objective of this study is to determine a lease agreement to finance an investment project and a solution for managing credit risk.This study investigates three types of contingent leases to reduce the costs ...The main objective of this study is to determine a lease agreement to finance an investment project and a solution for managing credit risk.This study investigates three types of contingent leases to reduce the costs associated with bankruptcy and compensate for the lessor’s position.A leasing defaultable contract allows the lessor to obtain the rent that will be recovered if the lessee defaults.A leasing convertible contract can be automatically converted into shares when certain default conditions related to the cash flows generated by the firm are met.These conditions are triggered by the ratio of the firm’s value and leasing payments.A Defaultable-Convertible-Leasing contract with a payback option grants the lessor the right but not the obligation to convert the remaining lease payments into stocks or to break up the contract and pick up the rented equipment when the firm reaches the default threshold.These contracts are motivated by contributing to the range of risk-management strategies by adding more flexibility to standard leasing contracts and contingent rents.Closed-form securities pricing solutions are set forward in a dynamic model for firms with existing assets and a growth option financed by shares and a contingent lease.Risk-neutral pricing theory and the backward induction method are used to determine the pricing of corporate securities.Numerical analysis shows that leasing convertible contracts and defaultable-convertible contracts with payback options impact the service value of the leased asset,maturity,and inefficiencies resulting from insolvency and asset substitution.An optimal conversion rate reduces inefficiencies,thus making the leasing convertible contract and defaultable-convertible-leasing contract with payback option a reliable solution to ensure business continuity and loss coverage of the leasers upon default.展开更多
The thesis combs the existing legal provisions about rural housing land from the perspectives of use restriction,means restriction,subject restriction and mortgage prohibition,and finds out their defects,namely,weaken...The thesis combs the existing legal provisions about rural housing land from the perspectives of use restriction,means restriction,subject restriction and mortgage prohibition,and finds out their defects,namely,weakening real right,confused knowledge about the integration of house property and land property,the loophole in Land Administration Law,the bans on the rural residents' purchase of housing land and so on.Then the thesis expounds the harms of restricting the circulation of housing land,for example,it will result in underground transaction of housing lands;lead to untenanted lands and waste of resources;bring about financing difficulty for peasants;do harm to the interest of land owners(rural collective economic organizations) and so on.The thesis further proposes to establish the legal lease model to solve the problems in the circulation of housing lands,specifically explains the definition of the legal lease model of housing lands,illustrates its detailed information from the aspects of object,subject and content and elaborates a series of problems involving,how to distribute the rent of housing lands,as well as how to perfect relevant procedures and formalities in the credit circulation of housing lands so as to realize the legitimate and effective circulation of rural housing lands and protect the peasants' interests.展开更多
文摘This article discusses Islamic Banking System and its mode of leasing in the light of the objectives of Shari＇ah. It explores that the objectives behind the introduction of Islamic finance and banking system were the elimination of capitalist banking interest, exploitation of poor segment of the society and the establishment of an economic system which may lead to sustain a balance economic order and social justice. In this context, it intends to analyze the mode of leasing provided by Islamic Banking system in the light of the objectives of Shari＇ah and discloses that although Islamic Banking system is based on the principle of mudarbah, musharkah and Ijarah and deals with the customers in that context, yet apparently, the effects of these transactions are not much different from capitalist modes due to same consequences and effects of these transactions. It thus, provides a comparative analysis of the issue, i.e., mode of leasing at both Islamic and capitalist Banks. It argues that a common man can not avail Islamic financing/leasing if he lacks financial resources. If a poor person tries to purchase something by way of ijarah through Islamic Banking finance, he does not find any difference in the payment of the total cost between capitalist mode of leasing and Islamic mode of ijarah. Hence, this article concludes that although Islamic financing achieved a remarkable development among the Muslims, yet there is a need to revise the policy and system of Islamic financing in the light of the objectives of Shari＇ah. It also concludes that the mode of leasing provided at Islamic Banks does not accomplish the objectives of its establishment which is public interest. At present, this system is unable to assist the poor segment of the society or to provide ease to them.
基金supported by the National High Technology Research and Development Program of China ('863' Program, No.2009AA01Z242)National Natural Science Foundation of China (60972080)
文摘In current researches on spectrum leasing, Common model and Property-right model are two main approaches to dynamic spectrum sharing. However, Common model does not consider the obligation of Primary System (PS) and is unfair to Secondary System (SS), while the cooperation based on Property-rights model has problems on its feasibility. This paper proposes a novel system model, in which a Cost-Prediction scheme for Spectrum Leasing (CPSL scheme) is designed to forecast the cost that PS would pay for leasing spectrum. Cost Function is introduced as a criterion to evaluate the potential cost of spectrum leasing for PS. The simulation results show that compared with Common model based scheme, CPSL scheme substantially improves the QoS of the delay-sensitive traffic in SS at the cost of a small degradation of PS performance.
基金supported by National Basic Research Program of China(973 Program)(No. 2010CB731800)Key Project of National Nature Science Foundation of China(No. 60934003),National Nature Science Foundation of China(Nos. 61104033, 61172095,61203104)Nature Science Foundation of Hebei Province(Nos. F2011203226, F2012203109, F2012203126)
文摘According to the property-rights model of cognitive radio, primary users （PUs） who own the spectrum resource have the right to lease part of spectrum to secondary users （SUs） in exchange for appropriate profit. In this paper, we propose a pricing-based spectrum leasing framework between one PU and multiple SUs. In this scenario, the PU attempts to maximize its utility by setting the price of spectrum. Then, the selected SUs have the right to decide their power levels to help PU s transmission, aiming to obtain corresponding access time. The spectrum leasing problem can be cast into a stackelberg game, where the PU plays the seller-level game and the selected SUs play the buyer-level game. Through analysis based on the backward induction, we prove that there exists a unique equilibrium in the stackelberg game with certain constraints. Numerical results show that the proposed pricing-based spectrum leasing framework is effective, and the performance of both PU and SUs is improved, compared to the traditional mechanism without cooperation.
基金Supported by the National Key Technology R&D Program during the Twelfth Five-Year Plan Period(2015BAK27B02)
文摘The dynamics of the globalized multimedia sources and request demands, which requires high computations and bandwidths, makes the IT infrastructure a challenge for live streaming applications. Migrating the system to a geo-distributed cloud and leasing servers is an ideal alternative for supporting large-scale live streaming applications with dynamic contents and demands. The new challenge of multimedia live streaming applications in a geo-distributed cloud is how to efficiently arrange and migrate services among different cloud sites to guarantee the distribute users’ experience at modest costs. This paper first investigates cloud leasing policies for live streaming applications and finds that there is no detailed algorithm to help live streaming applications arrange and migrate services among different cloud sites. Then, we present a quality of service（Qo S） guarantee cost-effective cloud leasing policy for live streaming applications. Meanwhile, we design a genetic algorithm（GA） to deal with the leasing policy among cloud sites of diverse lease prices. Experimental results confirm the effectiveness of the proposed model and the efficiency of the involved GA.
文摘With the economic development and financial product innovation, financial leasing more and more countries attention. China is faced with the transformation of economic development model, the upgrading of international status, the development of financial leasing imperative. On the one hand, financial leasing will help China to continuously improve its technological level and continuously upgrade its production equipment. On the other hand, financial leasing will help the development of small and medium-sized enterprises. providing a simple and convenient channel for SME investment and financing, Economic vitality, ease of employment pressure. The purpose of this paper is to point out the problems existing in the finance leasing taxation, draw lessons from the international experience and put forward the suggestions to improve the financial leasing in a rapid, healthy and orderly manner and make a great contribution to the economic construction.
文摘Finance lease business has become an important financial instrument for many enterprises at present. At the same time, with the expansion of the scale of securitization of leased assets, more and more financial reports of finance lease companies (lessors) are disclosed, and the provisions of lease standards for lessors are relatively few. This paper aims to study the lessor's accounting and tax treatment process, and put forward some suggestions on the lessor's accounting treatment.
基金supported by the National Basic Research Program of China (2009CB320401)the National Natural Science Foundation of China (60772108)the Fundamental Research Funds for the Central Universities (BUPT2009RC0111)
文摘According to the property rights model of cognitive radio,primary users who own the spectral resource have the right to lease or trade part of it to secondary users in exchange for appropriate profit.In this paper,an implementation of this framework is investigated,where a primary link can lease the owned spectrum to secondary nodes in exchange for cooperation （relaying）.A novel pricing model is proposed that enables the trading between spectrum and cooperation.Based on the demand of secondary nodes,the primary link attempts to maximize its quality of service （QoS） by setting the price of spectrum.Taking the price asked by primary link,the secondary nodes aim to obtain most profits by deciding the amount of spectrum to buy and then pay for it by cooperative transmission.The investigated model is conveniently cast in the framework of seller/buyer （Stackelberg） games.Analysis and numerical results show that our pricing model is effective and practical for spectrum leasing based on trading spectral resource for cooperation.
文摘The urban realty market is very complicated with wide-ranging contents and manyproblems. in the past, we focused our research mainly on the land auction, land rental inbatches, public bidding and the development of mass plots of land in the coastal open cit-ies, while neglecting the research on the real estate leasing and structural readjustment ofurban land use and housing Therefore. we have selected two typical areas in Beijing foron-the -spot investigation. One is Qianmen ——the most prosperous area in Beijingwith all kinds of big, medium-sized and small enterprises of public, collective and privateownership, and with brisk commercial activities and busy real estate leasing business. Theother area is the Zhongguancun ——the key section of the experimental area in Beijing forthe development of new technology and industries. In the past few years there have set upnew and high-tech enterprise groups with multiple subjects, Various categories and acombination of technology, industry and trade, which represent the direction for the de-velopment of science, technology and new productivity. Along with the mass explosivedevelopment of a large number of companies, the structure of the land use in that area haschanged dramatically. the leasing and transaction of the real estate are very active the re,and the rents and prices of land and housing have come up to the highest in Beijing.
文摘This research contributes to the theory of assessing aircraft leasing efficiency from an airline’s perspective by revising factors influencing leasing decisions and developing an integrated approach to modelling aircraft leasing decisions.Despite the extensive research on aircraft leasing appraisal,modelling tools for informed decisionmaking require constant updates regarding the attributes to be included and approaches to uncertainty conditions.The key contribution of this research supports the ongoing discussion of the practical deployment of management science in the aircraft leasing field,aiding the industry in quickly adapting to changing market conditions.The research includes brief analyses of key performance indicators in the aircraft leasing industry to identify trends and a literature review to justify the current factors influencing leasing decisions.It is demonstrated that integrating operational modelling into aircraft leasing assessment can provide a data-driven justification for the importance of new,fuel-efficient aircraft in achieving sustainability goals and maintaining operational profitability.The sensitivity analysis further illustrates the robustness of the model and solution,and its capacity to generate scenario assessments reflecting varying conditions such as changes in demand,taxes,fuel costs,and other airline expenses.The simulation of a hypothetical example based on data from airlines’business intelligence platforms reveals that significant initial fixed leasing payments,including taxes,can negatively impact an airline’s ability to modernise its fleet through leasing.Fuel efficiency,zero customs duties and VAT on aircraft leasing,and sufficient capital to cover fixed leasing costs are the main drivers stimulating fleet modernisation and can be justified by a slight increase in expected profits.
文摘Although the term“green leasing”is not yet well defined,its primary purpose is clear.With an aim to create a collaborative environment through legal provisions between a building owner and a tenant,green leasing may ultimately help resolve the energy paradox in tenanted properties.Issues surrounding split-incentives are driven by a mismatch between owners’capital expenditures on improving building energy efficiency and an uncertainty of tenant or occupant behavior that might affect a building’s energy consumption.Though some countries have started to develop guidelines promoting the adoption of green leasing,especially in government buildings and commercial real estate,implementation has not been overly successful globally.This study has two focuses,the first of which is to compare green leasing guidelines from various countries and to suggest six comprehensive categories of green leasing components:management relationships,information sharing,certificates,legal stipulations,financial factors,and operation.The second core area of research places government-tenanted properties’lease agreement contracts.The goal is to find any evidence in a legal condition between a building owner and a tenant,in this case federal government,to improve building energy efficiency with less environmental impact in the United States.The findings of the study indicated 41 out of 400 leases had green clauses.Three out of six categories proposed in this study were found in the U.S.government-tenanted properties,while the other three types were not shown.The findings of this study also suggest categories of green leasing clauses can contribute to defining green leasing and provide empirical evidence of green leasing in government-tenanted properties.Ultimately,this study produces arguments for possible reasoning behind the employment of some green lease categories but the lack of use of others,specifically in the U.S.office market and government-tenanted buildings.
基金supported by the Technology Project of the State Grid Corporation Headquarters(Project No.4000-202399368A-2-2-ZB).
文摘The participation of wind farms in the former energymarket faces challenges such as power fluctuations and energy storage construction costs.To this end,this paper proposes a joint energy storage operation scheme for multiple wind farms based on a leasingmodel,which assistswind farms in bidding for participation in the former energy market through leasing services,thereby enhancing energy storage efficiency and maximizing economic benefits.In this paper,based on theWeibull probability distribution to portray the uncertainty of wind power,and considering the lifetime capacity loss caused by charging and discharging of energy storage,we construct a bilateral transaction model aiming at maximizing the multi-objective revenue of wind farms and shared energy storage.The trading strategy is designed based on the Stackelberg game framework and solved jointly by the improved genetic algorithm and interior pointmethod.By exploring the effects of different lease price intervals on the overall systemperformance,and analyzing the systemstate undermultiple charging and discharging scenarios.The results show that a reasonable lease price range can significantly improve the energy storage system utilization and wind farmrevenue.Theprogramprovides new ideas to enhance the economic benefits of wind farms and promote the application of shared energy storage,and promotes the wide application of shared energy storage systems.
基金National Development and Reform Commission(NDRC)New-Generation Information Infrastructure Construction Project:National Wide-Area Quantum Secure Communication Backbone Network Construction Project(0747-2260SCCSHV90(001))。
文摘The Optical Transport Network(OTN)is a protocol for sending network messaging over optical fiber networks.Intelligent optical networks provide an ideal solution for high-bandwidth services.Currently,data encryption schemes for OTN typically rely on mathematical problems such as elliptic curve cryptography or discrete logarithms,which are vulnerable to attacks by quantum computers.This paper investigates a quantum-secure OTN Framework that integrates Quantum Key Distribution(QKD)and Post-Quantum Cryptography(PQC)technologies,enabling OTN leased lines to resist quantum attacks.This framework can provide users with highly secure quantum-encrypted OTN leased lines services.
基金supported by National Key Research and Development Project(No.2020YFB1005500)Beijing Natural Science Foundation Project(No.M21034)。
文摘With the development of Internet of Things technology,intelligent door lock devices are widely used in the field of house leasing.In the traditional housing leasing scenario,problems of door lock information disclosure,tenant privacy disclosure and rental contract disputes frequently occur,and the security,fairness and auditability of the housing leasing transaction cannot be guaranteed.To solve the above problems,a blockchain-based proxy re-encryption scheme with conditional privacy protection and auditability is proposed.The scheme implements fine-grained access control of door lock data based on attribute encryption technology with policy hiding,and uses proxy re-encryption technology to achieve auditable supervision of door lock information transactions.Homomorphic encryption technology and zero-knowledge proof technology are introduced to ensure the confidentiality of housing rent information and the fairness of rent payment.To construct a decentralized housing lease transaction architecture,the scheme realizes the efficient collaboration between the door lock data ciphertext stored under the chain and the key information ciphertext on the chain based on the blockchain and InterPlanetary File System.Finally,the security proof and computing performance analysis of the proposed scheme are carried out.The results show that the scheme can resist the chosen plaintext attack and has low computational cost.
基金the Youth Program of National Social Sciences Foundation"Study on the Impact of Rising Cost of Labor on China's Grain Production"(Project Code:13CGL085)major international(regional)cooperation project of the National Natural Sciences Foundation"Agricultural Organizational System and the Development of Farmers'Cooperatives:Study on the Innovation and Optimization of Agricultural Organizational System"(Grant No.71333011)international(regional)cooperation and exchange project of the National Natural Sciences Foundation"Demographic Transition,Rural-Urban Population Flow and China's Agricultural and Rural Development"(Grant No.70673035)
文摘In answering the questions as whether China's rising labor price and ageing workforce have affected rural land leasing and whether these factors have any joint effect,we have employed RCRE data of the Ministry of Agriculture to carry out an empirical analysis and the result indicates that labor price hike has significant positive effects on both the land lease-in and lease-out of rural households,i.e.labor price hike will help increase the land leasing of rural households.At the level of ageing workforce,our empirical results indicate that ageing workforce does not create any significant impact on rural land leasing market no matter for land lease-in or lease-out in overall samples,plain regions and mountainous regions.In our empirical analysis on whether ageing workforce will intensify or weaken the effects of labor price hike on rural land leasing market,the regression result also indicates that there is no significant effect from a statistical perspective.
文摘The main objective of this study is to determine a lease agreement to finance an investment project and a solution for managing credit risk.This study investigates three types of contingent leases to reduce the costs associated with bankruptcy and compensate for the lessor’s position.A leasing defaultable contract allows the lessor to obtain the rent that will be recovered if the lessee defaults.A leasing convertible contract can be automatically converted into shares when certain default conditions related to the cash flows generated by the firm are met.These conditions are triggered by the ratio of the firm’s value and leasing payments.A Defaultable-Convertible-Leasing contract with a payback option grants the lessor the right but not the obligation to convert the remaining lease payments into stocks or to break up the contract and pick up the rented equipment when the firm reaches the default threshold.These contracts are motivated by contributing to the range of risk-management strategies by adding more flexibility to standard leasing contracts and contingent rents.Closed-form securities pricing solutions are set forward in a dynamic model for firms with existing assets and a growth option financed by shares and a contingent lease.Risk-neutral pricing theory and the backward induction method are used to determine the pricing of corporate securities.Numerical analysis shows that leasing convertible contracts and defaultable-convertible contracts with payback options impact the service value of the leased asset,maturity,and inefficiencies resulting from insolvency and asset substitution.An optimal conversion rate reduces inefficiencies,thus making the leasing convertible contract and defaultable-convertible-leasing contract with payback option a reliable solution to ensure business continuity and loss coverage of the leasers upon default.
文摘The thesis combs the existing legal provisions about rural housing land from the perspectives of use restriction,means restriction,subject restriction and mortgage prohibition,and finds out their defects,namely,weakening real right,confused knowledge about the integration of house property and land property,the loophole in Land Administration Law,the bans on the rural residents' purchase of housing land and so on.Then the thesis expounds the harms of restricting the circulation of housing land,for example,it will result in underground transaction of housing lands;lead to untenanted lands and waste of resources;bring about financing difficulty for peasants;do harm to the interest of land owners(rural collective economic organizations) and so on.The thesis further proposes to establish the legal lease model to solve the problems in the circulation of housing lands,specifically explains the definition of the legal lease model of housing lands,illustrates its detailed information from the aspects of object,subject and content and elaborates a series of problems involving,how to distribute the rent of housing lands,as well as how to perfect relevant procedures and formalities in the credit circulation of housing lands so as to realize the legitimate and effective circulation of rural housing lands and protect the peasants' interests.
