KQCI
QCI may refer to: * QoS Class Identifier, a mechanism to ensure proper Quality of Service for bearer traffic in LTE networks * Quadratic configuration interaction, an extension of configuration interaction in quantum physics * Queen Charlotte Islands, an archipelago on the North Coast of British Columbia, Canada * Quality Council of India The Quality Council of India (QCI) was set up as a public private partnership model on the model existing in Netherlands at the time, where although the NAB was not owned by the government, yet it was supported by it and was exceedingly used as a ...

QoS Class Identifier
QoS Class Identifier (QCI) is a mechanism used in 3GPP Long Term Evolution (LTE) networks to ensure carrier traffic is allocated appropriate Quality of Service (QoS). Different carrier traffic requires different QoS and therefore different QCI values. QCI value 9 is typically used for the default carrier of a UE/PDN for non privileged subscribers. Background To ensure that carrier traffic in LTE networks is appropriately handled, a mechanism is needed to classify the different types of carriers into different classes, with each class having appropriate QoS parameters for the traffic type. Examples of the QoS parameters include Guaranteed Bit Rate (GBR) or non-Guaranteed Bit Rate (non-GBR), Priority Handling, Packet Delay Budget and Packet Error Loss rate. This overall mechanism is called QCI. Mechanism The QoS concept as used in LTE networks is class-based, where each carrier type is assigned one QoS Class Identifier (QCI) by the network. The QCI is a scalar that is used withi ...
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Quadratic Configuration Interaction
Quadratic configuration interaction (QCI) is an extension of configuration interaction that corrects for size-consistency errors in single and double excitation CI methods (CISD). Size-consistency means that the energy of two non-interacting (i.e. at large distance apart) molecules calculated directly will be the sum of the energies of the two molecules calculated separately. This method called QCISD was developed in the group of John Pople. It gives results that are comparable to the coupled cluster Coupled cluster (CC) is a numerical technique used for describing many-body systems. Its most common use is as one of several post-Hartree–Fock ab initio quantum chemistry methods in the field of computational chemistry, but it is also used ... method, CCSD. QCISD can be improved by the same perturbative inclusion of unlinked triples to give QCISD(T). This gives similar results to CCSD(T). References Post-Hartree–Fock methods {{quantum-chemistry-stub ...
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Queen Charlotte Islands
Haida Gwaii (; hai, X̱aaydag̱a Gwaay.yaay / , literally "Islands of the Haida people") is an archipelago located between off the northern Pacific coast of Canada. The islands are separated from the mainland to the east by the shallow Hecate Strait. Queen Charlotte Sound lies to the south, with Vancouver Island beyond. To the north, the disputed Dixon Entrance separates Haida Gwaii from the Alexander Archipelago in the U.S. state of Alaska. Haida Gwaii consists of two main islands: Graham Island () in the north and Moresby Island (, literally: south people island half, or "Islands of Beauty") in the south, along with approximately 400 smaller islands with a total landmass of . Other major islands include Anthony Island ( / ), Burnaby Island (), Lyell Island, Louise Island, Alder Island ( / ), and Kunghit Island. (For a fuller, but still incomplete, list see List of islands of British Columbia.) Part of the Canadian province of British Columbia, the islands we ...
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