Abstract: A system includes one or more server hardware computing devices includes one or more processors and memory storing instructions that, when executed by the one or more processors, cause the system to receive a request to verify an identity of a user attempting to complete an examination provided by an online proctored examination platform to a candidate user authorized to complete the examination and repeatedly, at a predefined interval during the examination, determine, based at least in part on user data collected by the online proctored examination platform during the examination, the user data identifying the user at a time that the interval elapses, whether the user is the candidate user, and, responsive to a determination that the user is not the candidate user, perform one or more of a plurality of actions associated with a failed identity verification, the plurality of actions including stopping the examination.

Abstract: A system includes a candidate device including a processor configured to implement a candidate evaluation software application and a server computer configured to communicate with the candidate device using a network. The server computer is configured to receive, from the candidate device, a request to access an evaluation service. The request includes a candidate identifier. The server computer is configured to access historical candidate data in a memory accessible by the server computer to determine a trust score for a candidate associated with the candidate identifier, and when the trust score exceeds a threshold, transmit a credential to the candidate device enabling an evaluation of the candidate to be performed on the candidate device via a secured local area network.

Abstract: A system includes one or more server hardware computing devices communicatively coupled to a network. The one or more server hardware computing devices include one or more processors and memory storing specific computer-executable instructions that, when executed by the one or more processors, cause the system to receive a first request to calculate a trust score for a user associated with a user account of an online proctored examination platform. The trust score represents results of a risk analysis of the user. The instructions cause the system to obtain internal data of the online proctored examination platform, the internal data describing usage of the online proctored examination platform by the user, perform the risk analysis using at least the internal data to produce the trust score, associate the trust score with the user account, and perform an action based on the trust score.

Abstract: A system includes a candidate client device including a processor, a camera, and a microphone. The system includes one or more server hardware computing devices communicatively coupled to a network and in communication with the candidate client device. Each of the one or more server hardware computing devices includes at least one processor executing specific computer-executable instructions within a memory that, when executed, cause the one or more server hardware computing devices to receive the sequence of images and the audio data from the candidate client device, extract a first video attribute from the sequence of images, extract a first audio attribute from the audio data, determine that at least one of the first video attribute violates a first video condition and the first audio attribute violates a first audio condition, and prevent the candidate client device from performing a candidate evaluation function using candidate evaluation software application.

Abstract: A system includes a client device and a server computer coupled to a network and in communication, via the network, with the client device. The server computer is configured to receive, from the client device, a queue request. The queue request includes a candidate identifier.

Abstract: A system includes a client device including a processor configured to implement a candidate evaluation software application and a server computer in communication, via a network, with the client device. The server computer is configured to receive, from the client device, a queue request. The queue request includes a candidate identifier. The server computer includes determine, using the candidate identifier, a candidate target attribute, identify a first candidate queue from a plurality of candidate queues using the candidate target attribute, and encode into the first candidate queue a reference to the candidate identifier. The server computer is configured to identify, in a first administrative queue, an administrator identifier, the first administrative queue being associated with the candidate target attribute, and establish at least one of a video and an audio data connection between the client device and an administrator device associated with the administrator identifier.

Abstract: A system includes a candidate client device including a processor, a camera, and a microphone. The system includes one or more server hardware computing devices communicatively coupled to a network and in communication with the candidate client device. Each of the one or more server hardware computing devices includes at least one processor executing specific computer-executable instructions within a memory that, when executed, cause the one or more server hardware computing devices to receive the sequence of images and the audio data from the candidate client device, extract a first video attribute from the sequence of images, extract a first audio attribute from the audio data, determine that at least one of the first video attribute violates a first video condition and the first audio attribute violates a first audio condition, and prevent the candidate client device from performing a candidate evaluation function using candidate evaluation software application.

Abstract: A system includes one or more server hardware computing devices communicatively coupled to a network. The one or more server hardware computing devices includes one or more processors and memory storing specific computer-executable instructions that, when executed by the one or more processors, cause the system to receive decision data describing usage conditions of an online proctored examination platform, determine, based at least on the decision data, a need for additional proctoring resources on the platform to meet a demand for proctoring resources, and send a request for proctoring services to each of one or more on-demand proctor users agreeing to receive requests to become available on the platform when the additional proctoring resources are needed.

Abstract: A system includes one or more server hardware computing devices includes one or more processors and memory storing instructions that, when executed by the one or more processors, cause the system to receive a request to verify an identity of a user attempting to complete an examination provided by an online proctored examination platform to a candidate user authorized to complete the examination and repeatedly, at a predefined interval during the examination, determine, based at least in part on user data collected by the online proctored examination platform during the examination, the user data identifying the user at a time that the interval elapses, whether the user is the candidate user, and, responsive to a determination that the user is not the candidate user, perform one or more of a plurality of actions associated with a failed identity verification, the plurality of actions including stopping the examination.

Abstract: A system includes a client device and a server computer coupled to a network and in communication, via the network, with the client device. The server computer is configured to receive, from the client device, a queue request. The queue request includes a candidate identifier.

Abstract: A system includes a client device including a processor configured to implement a candidate evaluation software application and a server computer in communication, via a network, with the client device. The server computer is configured to receive, from the client device, a queue request. The queue request includes a candidate identifier. The server computer includes determine, using the candidate identifier, a candidate target attribute, identify a first candidate queue from a plurality of candidate queues using the candidate target attribute, and encode into the first candidate queue a reference to the candidate identifier. The server computer is configured to identify, in a first administrative queue, an administrator identifier, the first administrative queue being associated with the candidate target attribute, and establish at least one of a video and an audio data connection between the client device and an administrator device associated with the administrator identifier.

Abstract: A system includes one or more server hardware computing devices communicatively coupled to a network. The one or more server hardware computing devices include one or more processors and memory storing specific computer-executable instructions that, when executed by the one or more processors, cause the system to receive a first request to calculate a trust score for a user associated with a user account of an online proctored examination platform. The trust score represents results of a risk analysis of the user. The instructions cause the system to obtain internal data of the online proctored examination platform, the internal data describing usage of the online proctored examination platform by the user, perform the risk analysis using at least the internal data to produce the trust score, associate the trust score with the user account, and perform an action based on the trust score.

Abstract: A system includes a candidate device including a processor configured to implement a candidate evaluation software application and a server computer configured to communicate with the candidate device using a network. The server computer is configured to receive, from the candidate device, a request to access an evaluation service. The request includes a candidate identifier. The server computer is configured to access historical candidate data in a memory accessible by the server computer to determine a trust score for a candidate associated with the candidate identifier, and when the trust score exceeds a threshold, transmit a credential to the candidate device enabling an evaluation of the candidate to be performed on the candidate device via a secured local area network.

Abstract: A method of manufacturing and installing cement-based concrete tiles, composed of portland cement, polymer-modified cement admixtures, sand, additional ingredients and color pigments integrated with reinforcement mesh for support and strength. The cement-based concrete mix may be dispersed and formed into a single layer cement-based concrete slab configuration with the reinforcement mesh completely embedded within. The cement-based concrete mix is distributed to achieve the desired texture, thickness and finish to form the cement-based concrete slab. After curing, any desired custom designs, engravings, additional colorations and wearing surface sealers are added to render the designs an embodiment of the cement-based concrete slab and thus an embodiment of the cement-based concrete tiles. The concrete slab is then cut into concrete tiles of custom dimensions. The cement-based concrete tiles are identified in sequential order to establish correct placement during the installation process.

Abstract: A cement based pigmented concrete overlay system that is applied in a thin coat to resurface and add design to unsightly concrete substrates, delivered in a multi-use packaging system. The shipping, water measuring and mixing system utilizes a plastic bucket with watertight lid as the shipping container. Inside the shipping container are the individually packaged ingredients of the overlay system, after the shipping container is emptied of the individually packaged ingredients, it becomes the mixing bucket. The individually packaged ingredients consist of a plastic watertight bottle of concrete primer, which after emptying becomes the exact water measurment vessel. A plastic watertight bag of the dry cement mix, and a plastic watertight bottle of sealer is included. Water is added into the mixing bucket and then the dry cement mix is added, which is then blended to become the overlay mix. The overlay mix is applied to the primed concrete substrate and allowed to dry becoming the overlay surface.

Abstract: A plurality of hydraulic turbines is provided to generate electrical energy. A first hydraulic turbine is powered by the flow of water from an upper reservoir to plurality of holding tanks. Compressed air is used to return the water from the tanks to the reservoir. A second hydraulic turbine is provided in the return line which connects the tanks with the reservoir.

Abstract: A power producing loop continuously carrying water picking up geothermal heats and being made into steam and condensate that is continuously returned to said water source, with appropriate means of producing power at proper points in the loop.

Abstract: A gas making retort includes a substantially upright mixing chamber opening into a first horizontal refractory cylinder which encloses a second horizontal refractory cylinder. The second cylinder encloses two centrally positioned refractory circular gas out take tubes directly opposite to each other. Each of the cylinders has a cylindrical passageway for the introduction of a mixture of air, steam and a carbonaceous material from the mixing chamber into a gas making space defined between the internal ends of the gas out take tubes wherein a partial combustion of the mixture takes place.

Abstract: In areas where wind power, hydro power and earth heat power are all available and are to be developed, a common means and method of storing such power during off peak periods of power use are frequently required. Here power storage is accomplished by the lifting of under ground weights. Earth power may be geothermal heats, volcanic heats, heats from hot springs, deep holes in the earth, or heats from deep oil or gas wells, such as come to the surface when they bring up oil or natural gas. These are all here combined as a common source of power. Any or all may contribute power to the power storage.

Abstract: Taking advantage of numerous sources of fueless energy such as the heats of volcanoes, hot springs, active and inactive oil and natural gas wells, geothermal heats and other natural steam power, some of these energy sources intermittent, and others continuous, are here combined to provide a steady flow of continuous fueless power for stationary or movable power plant use. It saves fossil fuels for uses far more important than their combustion, and does not pollute our human environment.