With the development of society and economy, the number of automobiles keeps increasing, and the market access of refined oil products is gradually expanding. All kinds of capital are pouring in, and the competition i...With the development of society and economy, the number of automobiles keeps increasing, and the market access of refined oil products is gradually expanding. All kinds of capital are pouring in, and the competition is fiercer than ever before. As a sales terminal of oil products, the value of gas stations keeps rising. Rental stations account for more than 50% of the network layout of mainstream oil companies. Their overall stability directly affects the competitiveness of the companies and their control over the market. Therefore, it is of great significance for the sustainable development of the enterprise to analyze the stability risk of the leasing station and the countermeasures.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
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
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
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 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
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
INTRODUCTION Dissolution and precipitation of carbonates plays an important role in nature, such as in the chemistry of seawater, the sedimentation of carbonate at the seafloor, the geochemical evolution of freshwater...INTRODUCTION Dissolution and precipitation of carbonates plays an important role in nature, such as in the chemistry of seawater, the sedimentation of carbonate at the seafloor, the geochemical evolution of freshwater aquifers and last but not least, most spectacular, the evolution of karst landscapes. To provide a deeper understanding to all these processes knowledge is required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 Philippines senate rejected a new lease for the Subic Pay naval base on Septemker 16 in a vote that could end America’s 93-year military presence in the Philippines. The senate voted 12-11 on second reading to re...The Philippines senate rejected a new lease for the Subic Pay naval base on Septemker 16 in a vote that could end America’s 93-year military presence in the Philippines. The senate voted 12-11 on second reading to reject the friendship treaty between the two countries signed last month.展开更多
In this study,we develop and empirically test a valuation model for a commonly encountered option in office leases:a tenant’s option to renew at future market rent(a fair market value)with lease termination as the ma...In this study,we develop and empirically test a valuation model for a commonly encountered option in office leases:a tenant’s option to renew at future market rent(a fair market value)with lease termination as the maturity date.The model integrates decision analysis with real options analysis and market risk with private risks.“Option value”is defined as the private value of the option to either party pre-contract,while“option price”assumes a fair agreement between transacting parties and can be positive(rental premium paid)or negative(rental discount offered).Without manifest expectations,an analysis of a sample of office leases supports the model’s logic with price estimates in a practical range.The tenants’option price/value is shown to have a negative relationship with the original/renewal lease term;conversely,the landlords’option value is positively related to the original/renewal term.Comparative analyses show that transaction costs have a positive effect on tenants’option value and on prices,while vacancy costs and the vacancy period are both positively related to the landlords’option value and negatively related to price.Market rent is found to have a negative relationship with option price.Overall,this study provides a theoretical analysis and empirical tests of the value of a real option that allows option holders to renew/extend their contracts at a fair market value.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
The acceleration of urbanization has led to an increase in the number of urban floating population, which leads to more demands for the housing rental market. With the support of policies, long-term lease apartments h...The acceleration of urbanization has led to an increase in the number of urban floating population, which leads to more demands for the housing rental market. With the support of policies, long-term lease apartments have begun to emerge. However, under the multi-subject supply, longterm lease apartments have encountered problems such as small profits in their development. Starting from the background of the development of long-term lease apartments, this study classified the main types of long-term lease apartments, analyzed the four profit models of comprehensive profit, expansion of rent difference, REITs and value-added services based on their business models, and proposed corresponding suggestions on the profitability of long-term lease apartments according to the current situation of profit difficulty of long-term lease apartments and the lack of profit models.展开更多
文摘With the development of society and economy, the number of automobiles keeps increasing, and the market access of refined oil products is gradually expanding. All kinds of capital are pouring in, and the competition is fiercer than ever before. As a sales terminal of oil products, the value of gas stations keeps rising. Rental stations account for more than 50% of the network layout of mainstream oil companies. Their overall stability directly affects the competitiveness of the companies and their control over the market. Therefore, it is of great significance for the sustainable development of the enterprise to analyze the stability risk of the leasing station and the countermeasures.
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 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.
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 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.
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.
文摘INTRODUCTION Dissolution and precipitation of carbonates plays an important role in nature, such as in the chemistry of seawater, the sedimentation of carbonate at the seafloor, the geochemical evolution of freshwater aquifers and last but not least, most spectacular, the evolution of karst landscapes. To provide a deeper understanding to all these processes knowledge is required
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.
文摘The Philippines senate rejected a new lease for the Subic Pay naval base on Septemker 16 in a vote that could end America’s 93-year military presence in the Philippines. The senate voted 12-11 on second reading to reject the friendship treaty between the two countries signed last month.
基金research grants(P0030199 and P0038209)from the Hong Kong Polytechnic University。
文摘In this study,we develop and empirically test a valuation model for a commonly encountered option in office leases:a tenant’s option to renew at future market rent(a fair market value)with lease termination as the maturity date.The model integrates decision analysis with real options analysis and market risk with private risks.“Option value”is defined as the private value of the option to either party pre-contract,while“option price”assumes a fair agreement between transacting parties and can be positive(rental premium paid)or negative(rental discount offered).Without manifest expectations,an analysis of a sample of office leases supports the model’s logic with price estimates in a practical range.The tenants’option price/value is shown to have a negative relationship with the original/renewal lease term;conversely,the landlords’option value is positively related to the original/renewal term.Comparative analyses show that transaction costs have a positive effect on tenants’option value and on prices,while vacancy costs and the vacancy period are both positively related to the landlords’option value and negatively related to price.Market rent is found to have a negative relationship with option price.Overall,this study provides a theoretical analysis and empirical tests of the value of a real option that allows option holders to renew/extend their contracts at a fair market value.
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The acceleration of urbanization has led to an increase in the number of urban floating population, which leads to more demands for the housing rental market. With the support of policies, long-term lease apartments have begun to emerge. However, under the multi-subject supply, longterm lease apartments have encountered problems such as small profits in their development. Starting from the background of the development of long-term lease apartments, this study classified the main types of long-term lease apartments, analyzed the four profit models of comprehensive profit, expansion of rent difference, REITs and value-added services based on their business models, and proposed corresponding suggestions on the profitability of long-term lease apartments according to the current situation of profit difficulty of long-term lease apartments and the lack of profit models.
