Abstract: Interference caused by a first wireless radio on other wireless radios may be mitigated by reducing the transmission power of the first wireless radio. The amount by which the transmission power is reduced may differ for each antenna of the first wireless radio and each communication link used by the first wireless radio. Isolation values associated with each antenna of the first wireless radio may be used to determine a target change in transmission power for each antenna that would mitigate interference with the other radio(s). Signal strength data associated with each communication link used by the first wireless radio may be used to determine a maximum change in transmission power for each communication link that would not degrade communications using the link below a threshold level of quality. The transmission power of the first wireless radio may be reduced by the lesser of the target amount or maximum amount.

Abstract: A method and apparatus for path detection are disclosed. In the method and apparatus, a data path may link two path-end nodes in a network. Event data for the network may be received and may be used to determine, for each node resident on the path, proximity measures to each path-end node. The proximity measure of network nodes may be evaluated to determine whether a path exists between the two path-end nodes.

Abstract: A data center includes heat producing components and an air handling system that provides reduced relative humidity air to cool the heat producing components. The air handling system includes a thermal storage unit that removes thermal energy from incoming air under a given set of ambient air conditions and releases thermal energy into incoming air under another set of ambient air conditions. Under the given set of ambient air conditions, the thermal storage unit cools the incoming air and causes water vapor to condense out of the incoming air. Under the other set of ambient air conditions, the thermal storage unit releases thermal energy into the incoming air, thus heating the incoming air.

Abstract: Techniques are described for formally expressing whether sequences of operations performed on block storage devices are sequential or random. In embodiments, determinations of whether these sequences of operations are sequential or random may be used to predict latencies involved with running particular workloads, and to predict representative workloads for particular latencies.

Abstract: Aspects of the disclosure will be described with regard to the processing of DNS queries by a DNS service based on multiple network addresses associated with a single network entity (e.g., a service provider). The DNS service may respond to each DNS query for identifying network addresses associated with the service provider with a respective unique network address from a pool of network addresses. Based on the uniqueness of network addresses, DNS queries and subsequent communications between respective client computing devices and the service can be correlated.

Abstract: Where a plurality of machine learning algorithms is available to process information or data in the furtherance of a task, one of the algorithms may be identified as particularly well-suited or appropriate based on attributes of the information or data. Such attributes of the imaging data may be determined by any means, and a prediction as to the performance (e.g., one or more metrics) or success of each of the algorithms may be made. One of the algorithms may ultimately be selected based on such predictions, as well as the computing resources that are available for executing the algorithms, and any other relevant constraints.

Abstract: A pickup location that includes a control station and one or more storage compartment modules provides the ability for items to be ordered and delivered for pickup by a user without having to pack those items in a shipping package prior to shipping from a materials handling facility. Delivering items for pickup by a user without having to package the items prior to shipping, may provide a better experience for the customer, reduce waste in packaging material and a lower cost of delivering the ordered items to the customer.

Abstract: Features are disclosed for providing guidance regarding robotic traffic density to humans working in the same physical area as robots. Through analysis of the planned and/or historical routes of the robotic traffic, traffic densities can be identified for the physical area. The densities may be used to generate a heat map or other visual display for presentation to human workers. This allows the workers to move through the physical area with a better understanding of where robot traffic is dense and how to best avoid interrupting those assets.

Abstract: Systems and methods are described for determining a location in an on-demand code execution environment to execute user-specified code. Virtual machines can be utilized to isolate different executions of code from one another. However, virtual machines require additional computing resources to implement, and may slow code executions. This disclosure enables multiple items of code, potentially associated with different users, to be executed on a single virtual machine instance or other device. Specifically, the present disclosure enables the generation of a risk profile for an item of code, which can be used to determine the security or privacy risk that would occur by executing the code on a device. By comparing the risk profiles of a given item of code to other items of code executing on a device, the on-demand code execution environment can selectively group code executions, thus increasing the efficiency of the system while maintaining security and privacy.

Abstract: The subject matter disclosed herein relates to an electrowetting display comprising: a transparent substrate including glass spacers surrounded by recessed regions corresponding to pixel regions, a layer of transparent conductive material on the glass spacers, color filter material in the recessed regions, and a transparent support plate covering the recessed regions and the glass spacers, wherein the transparent support plate includes an electrowetting oil.

Abstract: A first content item instance may be played by one or more participants and may be presented by one or more first compute nodes to the one or more participants. Information associated with the first content item instance may be collected. The information may include, for example, game state, user inputs, and other information associated with the first content item instance. The information may be provided as input to a second content item instance executing at one or more second compute nodes. Audio and/or video information output by the second content item instance may then be collected, and data including the collected information may be transmitted to one or more third compute nodes for presentation to spectators. Spectator feedback may be received and provided back to the first content item instance, which may be presented based, at least in part, on the spectator feedback.

Abstract: A system includes a rack and one or more server systems mounted in the rack. A server system includes at least one sever node and each server node includes an array of devices including mass storage devices and at least one server device. Segments of the array of devices of a particular server node are mounted in sub-node chassis that include intra node connectors. Multiple sub-node chassis that each include devices such as mass storage devices or server devices of the sever node couple together via the intra node connectors when installed in a server system chassis to form a server node. Each server node of a server system may be a separate logical node. Also, the sub-node chassis of a server node may be configured for vertical airflow through the sub-node chassis in addition to cross airflow.

Abstract: A plurality of devices are each operable to provide information that is usable for to prove authorization with any of the other devices. The devices may have common access to a cryptographic key. A device may use the cryptographic key to encrypt a session key and provide both the session key and the encrypted session key. Requests to any of the devices can include the encrypted session key and a digital signature generated using the session key. In this manner, a device that receives the request can decrypt the session key and use the decrypted session key to verify the digital signature.

Abstract: A technology is described for a non-intrusive power detection system. An example system may include a non-intrusive power detector configured to be electrically coupled to an alternating current (AC) power line to non-intrusively detect at least one of an alternating current or a voltage in the AC power line. A power change trigger may be coupled to the non-intrusive power detector and configured to detect a change in power in the AC power line. An indicator may be coupled to the power change trigger. The indicator may be configured to indicate when a power change occurs based on an output of the power change trigger.

Abstract: Systems and method for the management of virtual machine instances are provided. A network data transmission analysis system can host virtual machine networks. A component of a hosted virtual machine network is configured in a manner to receive commands directed towards a simulated network device. The component may then execute a process or processes on the hosted virtual machine network which correspond to the received command.

Abstract: This disclosure relates to a geographically distributed, multi-master system for storing data records, and associated methods and computer-readable media for replicating data records across geographically distributed data stores of the system in a manner that achieves consistency between data stored in geographically distributed regions as well as deterministic data replication.

Abstract: Organizations maintain and generate large amounts of documentation and entities of these organizations often need to collaborate on generating and reviewing this information. There is a need to maintain and store this documentation remotely in such a way that the entities of these organizations may collaborate with each other. A document management a collaboration system is provided to enable entities to collaborate with each other. Furthermore, developers may interface with the document management and collaboration system to provide add-in services and components to the document management and collaboration system. These add-in service and components may expand the capabilities of the documents and collaborations enabled by the document management and collaboration system.

Abstract: Systems and approaches are provided for robustly detecting and tracking a user. Image data can be captured and processed to provide an estimated position and/or orientation of the user. Other sensor data, such as from an accelerometer and/or gyroscope, can be determined for a more robust estimation of the user's position and/or orientation. Multiple user detection processes and/or motion estimation approaches and their corresponding confidence levels can also be combined to determine a final estimated position and orientation of the user. The multiple user pose estimations and/or motion estimations can be combined via an approach such as probabilistic system modeling and maximum likelihood estimation.

Abstract: Locations and conditions of objects within a working environment may be tracked using RFID signals. A working surface within the environment may include a plurality of RFID antennas, and the objects to be tracked may include RFID tags. When one of the objects passes within an operational range of one of the antennas, an RFID signal is transmitted from the tag on the object to the antenna, and the location of the object may be determined based on the location of the antenna. Additionally, where a plurality of tags that are specially associated with a different aspect of a condition of an object are provided thereon, the condition of the object may be determined based on a number of the tags from which RFID signals are received, and the aspects of the condition with which each of such tags is associated.