Abstract: An example embodiment includes determining a cut of a graph to obtain a bi-partite sub-graph, where the graph represents a plurality of nodes and links between the plurality of nodes in a wireless mesh network. A channel is assigned to the bi-partite graph, and the obtained bi-partite subgraph is removed from the graph. The determining, assigning and removing steps are repeated until the graph has been divided into k bipartite subgraphs, where k is the number of channels being used for scheduling.

Abstract: A combustor liner assembly includes a liner assembly, including a hot dome, a hot wall, and an impingement shield. The liner assembly further includes a convector assembly. The combustor liner assembly further includes an impingement dome assembly, including a ring-shaped portion defining a plurality of apertures configured to receive a plurality of fuel injectors, and a face. The ring-shaped portion and the face define an annular passage, and the face defines a plurality of apertures and a plurality of orifices. The convector assembly and the impingement dome assembly are operably coupled to one another, and the plurality of orifices of the face are configured such that the hot dome is exposed to air flowing in the annular passage of the impingement dome assembly. The combustor liner assembly is configured to provide flow communication between the annular passage of the impingement dome assembly and the plurality of fuel injectors.

Abstract: A plurality of semiconductor nanoparticles having an elementally passivated surface are provided. These nanoparticles are capable of being suspended in water without substantial agglomeration and substantial precipitation on container surfaces for at least 30 days. The method of making the semiconductor nanoparticles includes reacting at least a first reactant and a second reactant in a solution to form the semiconductor nanoparticles in the solution. A first reactant provides a passivating element which binds to dangling bonds on a surface of the nanoparticles to passivate the surface of the nanoparticles. The nanoparticle size can be tuned by etching the nanoparticles located in the solution to a desired size.

Abstract: To meet emissions standards, many gas turbine engines use some form of lean, pre-mixed combustion system. The lean nature of the fuel may lead to combustion oscillations or other instabilities. A fuel injector having an inner and outer cylinder receives pilot fuel and a portion of pre-mixed fuel-air into an annular space defined by the inner and outer cylinders. The amount of pilot fuel mixed with the pre-mixed fuel-air can be modulated based on sensed conditions within the turbine engine. Continuous modulation of the pilot fuel to adapt to the sensed conditions improves main burner flames and response to engine transients.

Abstract: A plurality of semiconductor nanoparticles having an elementally passivated surface are provided. These nanoparticles are capable of being suspended in water without substantial agglomeration and substantial precipitation on container surfaces for at least 30 days. The method of making the semiconductor nanoparticles includes reacting at least a first reactant and a second reactant in a solution to form the semiconductor nanoparticles in the solution. A first reactant provides a passivating element which binds to dangling bonds on a surface of the nanoparticles to passivate the surface of the nanoparticles. The nanoparticle size can be tuned by etching the nanoparticles located in the solution to a desired size.

Abstract: A plurality of nanoparticles are provided. The nanoparticles may have a metal oxide or a semiconductor oxide surface region and a metal or semiconductor core region and/or the nanoparticles may be uniformly doped. The nanoparticles are formed by grinding a bulk material to a powder and then etching the powder in a solution to a desired nanoparticle size.

Abstract: Edge illumination photovoltaic devices based on multicomponent semiconductors and low cost methods for fabricating such devices are provided. The photovoltaic devices can find application in a variety of photovoltaic and thermophotovoltaic systems including solar concentrator based systems.

Abstract: A method of making nanoparticles includes contacting a powder having particles of a first size and an etching material, and heating the powder and the etching material to reduce particles of the first size to nanoparticles having a second size smaller than the first size.

Abstract: A plurality of semiconductor nanoparticles having an elementally passivated surface are provided. These nanoparticles are capable of being suspended in water without substantial agglomeration and substantial precipitation on container surfaces for at least 30 days. The method of making the semiconductor nanoparticles includes reacting at least a first reactant and a second reactant in a solution to form the semiconductor nanoparticles in the solution. A first reactant provides a passivating element which binds to dangling bonds on a surface of the nanoparticles to passivate the surface of the nanoparticles. The nanoparticle size can be tuned by etching the nanoparticles located in the solution to a desired size.

Abstract: A plurality of semiconductor nanoparticles having an elementally passivated surface are provided. These nanoparticles are capable of being suspended in water without substantial agglomeration and substantial precipitation on container surfaces for at least 30 days. The method of making the semiconductor nanoparticles includes reacting at least a first reactant and a second reactant in a solution to form the semiconductor nanoparticles in the solution. A first reactant provides a passivating element which binds to dangling bonds on a surface of the nanoparticles to passivate the surface of the nanoparticles. The nanoparticle size can be tuned by etching the nanoparticles located in the solution to a desired size.

Abstract: A method and apparatus for a middleware approach to the asynchronous and backward-compatible detection and prevention of Address Resolution Protocol (ARP) cache poisoning is presented. In a Streams-based network subsystem, such as found in the Solaris 2.6 operating system, a Cache Poisoning Checker (CPC) streams module, a CPC streams driver and a CPC user-level application are implemented. The CPC streams module is implemented in a protocol stack that pertains to ARP and is designed to intercept ARP traffic in both the upward and downwards directions that are dictated by the respective Internet Protocol and Ethernet drivers in the network subsystem. The CPC streams driver acts to provide an interface between the CPC streams module and the CPC user-level application. The CPC user-level application gives access to the local ARP cache and raises alarms if an ARP cache attack is detected.

Abstract: The current invention provides a wireless peer system. The wireless peer system comprises a server for storing and communicating information, at least one network peer, and a gateway peer. Each network peer communicates with the server using the gateway peer. The gateway peer and each network peer comprise a wireless communications unit and a microcontroller.

Abstract: A plurality of semiconductor nanoparticles having an elementally passivated surface are provided. These nanoparticles are capable of being suspended in water without substantial agglomeration and substantial precipitation on container surfaces for at least 30 days. The method of making the semiconductor nanoparticles includes reacting at least a first reactant and a second reactant in a solution to form the semiconductor nanoparticles in the solution. A first reactant provides a passivating element which binds to dangling bonds on a surface of the nanoparticles to passivate the surface of the nanoparticles. The nanoparticle size can be tuned by etching the nanoparticles located in the solution to a desired size.

Abstract: Many government entities regulated emission from gas turbine engines including CO. CO production is generally reduced when CO reacts with excess oxygen at elevated temperatures to form CO2. Many manufactures use film cooling of a combustor liner adjacent to a combustion zone to increase durability of the combustion liner. Film cooling quenches reactions of CO with excess oxygen to form CO2. Cooling the combustor liner on a cold side (backside) away from the combustion zone reduces quenching. Furthermore, placing a plurality of concavities on the cold side enhances the cooling of the combustor liner. Concavities result in very little pressure reduction such that air used to cool the combustor liner may also be used in the combustion zone. An expandable combustor housing maintains a predetermined distance between the combustor housing and combustor liner.