Abstract: Embodiments of the present invention are directed to a two-way data transfer and synchronization system. The data transfer and synchronization system includes a provider system and a customer system. The provider system includes a web service hosted by a web server connected to a computer network and a first database. The customer system includes a client application, connected to the computer network and a second database (e.g., SIS database). The provider system cannot read data from the second database. The client application is configured to send requests to the web service and to receive HTTP responses from the web service. The responses from the web service are executed by the client application so that changes made to the second database are also made to the first database, and vice versa.

Abstract: Embodiments of the present invention are directed to a two-way data transfer and synchronization system. The data transfer and synchronization system includes a provider system and a customer system. The provider system includes a web service hosted by a web server connected to a computer network and a first database. The customer system includes a client application, connected to the computer network and a second database (e.g., SIS database). The provider system cannot read data from the second database. The client application is configured to send requests to the web service and to receive HTTP responses from the web service. The responses from the web service are executed by the client application so that changes made to the second database are also made to the first database, and vice versa.

Abstract: Embodiments of the present invention are directed to a two-way data transfer and synchronization system. The data transfer and synchronization system includes a provider system and a customer system. The provider system includes a web service hosted by a web server connected to a computer network and a first database. The customer system includes a client application, connected to the computer network and a second database (e.g., SIS database). The provider system cannot read data from the second database. The client application is configured to send requests to the web service and to receive HTTP responses from the web service. The responses from the web service are executed by the client application so that changes made to the second database are also made to the first database, and vice versa.

Abstract: Embodiments of the present invention are directed to a two-way data transfer and synchronization system. The data transfer and synchronization system includes a provider system and a customer system. The provider system includes a web service hosted by a web server connected to a computer network and a first database. The customer system includes a client application, connected to the computer network and a second database (e.g., SIS database). The provider system cannot read data from the second database. The client application is configured to send requests to the web service and to receive HTTP responses from the web service. The responses from the web service are executed by the client application so that changes made to the second database are also made to the first database, and vice versa.

Abstract: A power converter for a fuel cell is provided. The power converter includes a boost converter connected to the fuel cell and configured to control a load voltage at a predetermined magnitude in a normal operation mode and to induce an output response by applying a predetermined perturbation current to the fuel cell in a diagnosis mode, and a digital signal processor configured to extract an impedance parameter by detecting the output response of the fuel cell in the diagnosis mode, and predict a lifespan of the fuel cell according to the impedance parameter. The normal operation mode is configured to supply a voltage in response to a change of a load and the diagnosis mode is configured to predict the lifespan of the fuel cell.

Abstract: A power converter for a fuel cell is provided. The power converter includes a boost converter connected to the fuel cell and configured to control a load voltage at a predetermined magnitude in a normal operation mode and to induce an output response by applying a predetermined perturbation current to the fuel cell in a diagnosis mode, and a digital signal processor configured to extract an impedance parameter by detecting the output response of the fuel cell in the diagnosis mode, and predict a lifespan of the fuel cell according to the impedance parameter. The normal operation mode is configured to supply a voltage in response to a change of a load and the diagnosis mode is configured to predict the lifespan of the fuel cell.