In recent years,there has been a growing interest in real estate investments that utilize blockchain technology.Traditional real estate investments usually involve third-party intermediaries for verifying and recordin...In recent years,there has been a growing interest in real estate investments that utilize blockchain technology.Traditional real estate investments usually involve third-party intermediaries for verifying and recording informal real estate transactions.This paper proposes a blockchain-based real estate investment model and presents a detailed description of the real estate register authentication aspect of the model.The model uses blockchain technology to create tamper-evident records of real estate transactions and provide secure authentication and verification for informal real estate transactions.Meanwhile,each real estate transaction is recorded in a block,and all transaction records are kept on the blockchain.This means that inventors can access these transaction records and verify their authenticity and validity.The system can also use smart contracts to automate the process of real estate transactions,which further improves transaction efficiency and reduces costs.Furthermore,the model’s timestamp and authentication mechanism can eliminate third-party intermediaries and ensure the authenticity and validity of real estate transactions through distributed ledgers and verification mechanisms.Overall,blockchain-based real estate systems offer advantages of security,transparency,efficiency,and cost reduction.With ongoing blockchain advancements,these systems are expected to play a crucial role in future real estate investment transactions.展开更多
时序分析是合成孔径雷达干涉测量(InSAR)的一项关键技术,它被广泛应用于监测广阔地区的地表缓慢形变。这种方法能够提供大范围、大面积的形变监测。其中,StaMPS PS方法凭借适用范围广、开源等优点,受到众多学者的使用。但在时序InSAR中...时序分析是合成孔径雷达干涉测量(InSAR)的一项关键技术,它被广泛应用于监测广阔地区的地表缓慢形变。这种方法能够提供大范围、大面积的形变监测。其中,StaMPS PS方法凭借适用范围广、开源等优点,受到众多学者的使用。但在时序InSAR中,对流层延迟相位会导致形变监测精度的降低,因此,以合肥市为研究区域,分析了经验模型线性改正、GACOS(generic atmospheric correction online service for InSAR)改正和欧洲中期天气预报中心(ECMWF)最新发布的ERA5数据集改正,并对比这3种方法在时序InSAR反演形变速率中的改正效果。通过计算得到研究区的标准差,进行比较分析和验证。其中线性改正、ERA5和GACOS改正后的标准差分别降低了21.71%、16.14%、10.38%。对于合肥区域,这3种方法均可减弱对流层延迟的影响,且精度都有所提高,其中线性改正效果最好,适用性更高,ERA5和GACOS受天气以及地面监测点密度等影响,在该区域改正效果较差。展开更多
文摘In recent years,there has been a growing interest in real estate investments that utilize blockchain technology.Traditional real estate investments usually involve third-party intermediaries for verifying and recording informal real estate transactions.This paper proposes a blockchain-based real estate investment model and presents a detailed description of the real estate register authentication aspect of the model.The model uses blockchain technology to create tamper-evident records of real estate transactions and provide secure authentication and verification for informal real estate transactions.Meanwhile,each real estate transaction is recorded in a block,and all transaction records are kept on the blockchain.This means that inventors can access these transaction records and verify their authenticity and validity.The system can also use smart contracts to automate the process of real estate transactions,which further improves transaction efficiency and reduces costs.Furthermore,the model’s timestamp and authentication mechanism can eliminate third-party intermediaries and ensure the authenticity and validity of real estate transactions through distributed ledgers and verification mechanisms.Overall,blockchain-based real estate systems offer advantages of security,transparency,efficiency,and cost reduction.With ongoing blockchain advancements,these systems are expected to play a crucial role in future real estate investment transactions.
文摘时序分析是合成孔径雷达干涉测量(InSAR)的一项关键技术,它被广泛应用于监测广阔地区的地表缓慢形变。这种方法能够提供大范围、大面积的形变监测。其中,StaMPS PS方法凭借适用范围广、开源等优点,受到众多学者的使用。但在时序InSAR中,对流层延迟相位会导致形变监测精度的降低,因此,以合肥市为研究区域,分析了经验模型线性改正、GACOS(generic atmospheric correction online service for InSAR)改正和欧洲中期天气预报中心(ECMWF)最新发布的ERA5数据集改正,并对比这3种方法在时序InSAR反演形变速率中的改正效果。通过计算得到研究区的标准差,进行比较分析和验证。其中线性改正、ERA5和GACOS改正后的标准差分别降低了21.71%、16.14%、10.38%。对于合肥区域,这3种方法均可减弱对流层延迟的影响,且精度都有所提高,其中线性改正效果最好,适用性更高,ERA5和GACOS受天气以及地面监测点密度等影响,在该区域改正效果较差。