Abstract: The present disclosure generally discloses a congestion control capability for use in communication systems (e.g., to provide congestion control over wireless links in wireless systems, over wireline links in wireline systems, and so forth). The congestion control capability may be configured to provide congestion control for a transport flow of a transport connection, sent from a transport flow sender to a transport flow receiver, based on flow control associated with the transport flow. The transport flow may traverse a flow queue of a link buffer of a link endpoint. The link endpoint may provide to the transport flow sender, via an off-band signaling channel, an indication of the saturation state of the flow queue of the transport flow. The transport flow sender may control transmission of packets of the transport flow based on the indication of the saturation state of the flow queue of the transport flow.

Abstract: An apparatus. The apparatus comprises a distribution of microstructures on an area of a surface, each of the microstructures having one or more sloping sides. The apparatus comprises a distribution of nanostructures being located on the one or more sloping sides. The distribution of microstructures on the area of the surface is configured to nucleate and grow droplets of liquid from a gas. The distribution of nanostructures forms a superhydrophobic surface for the liquid.

Abstract: An apparatus comprising a base layer, a distribution of separated micro-nucleation sites thereon. The apparatus also includes a distribution nanostructures located on the base layer, each of the micro-nucleation sites being adjacent to some of the nanostructures. Each of the micro-nucleation sites has a hydrophilic surface and the distribution of nanostructures form a superhydrophobic surface.

Abstract: A device, comprising a flow controller. The flow controller includes a body having walls that define a channel within the body, and a passive flow control valve. The passive control valve has a moveable member that includes a thermal shape memory material, the moveable member configured to change an aperture size in the channel in response to a reversible temperature-induced shape transformation of the thermal shape memory material.

Abstract: The invention is directed to an inter-host signaling protocol, referred to herein as Knock-On Protocol (KOP), for establishing in a secure manner a connection with a host behind firewall. Some embodiments of the invention are directed to a Knock-On Feature (KOF) used in intermediate firewalls or network address translators to enable connection establishment through the FW or NAT to hosts behind the FW or NAT. Advantageously the KOF may include a prefix-based protection feature to protect against address spoofing used in a message flood attack.