1,328 research outputs found
Some Observations on the British and German 3G Telecom Auctions
No full textI suggest explanations for the apparently puzzling bidding in the year 2000 British and German 3G telecom auctions. Relative-performance maximisation may have been important, but the outcome of the British auction seems to have been efficient. This paper bundles my comments on two papers presented at the December 2001 CES Ifo conference on the telecom auctions. (For those readers new to the subject, I recommend first reading "How (Not) to Run Auctions: the European 3G Telecom Auctions" European Economic Review 2002 and at www.paulklemperer.org and "The Biggest Auction Ever: the Sale of the British 3G Telecom Licenses" Economic Journal 2002 and also at www.paulklemperer.org.)Auctions, Telecommunications, Spectrum Auctions, 3G, UMTS, Bidding.
Work organisation and the restructuring of the telecommunications in British Telecom and Korea Telecom
No full textThe aim of thesis is to address the issue of convergence versus divergence in work
organisation in the telecommunications industry in Britain and Korea through a
comparative case study. Convergence or divergence has been debated among
universalists, national institution theorists and converging divergence proponents. These
approaches suffer from respectively under-socialisation, over-socialisation, and a lack of
dynamic interactions between variables.
By focusing on the changing processes of national telecoms governance regimes,
management strategies, corporate restructuring, and work organisation, the research
explores how global forces are mediated or structured by contextual variables and how
variables interact. It investigates three aspects of work organisation, that is, work
control, work rationalisation and customisation, and flexibility, of field technicians and
customer services representatives in British Telecom and Korea Telecom.
The evidence based on interviews, documentation and observations suggests that
there are systematic differences in patterns of work organisation between the two cases
but small similarities. Even ostensible similarities arise from different contexts and have
varying significance. Systematic differences are argued to result not just from varying
phases of corporate restructuring between the two cases but also more importantly from
such contextual factors as national systems, telecoms governance regimes, the existing
management structure, and management and union strategies. However, the
relationships between intermediate variables are more interactive and dynamic than
conventional institutionalism suggests. Changes in some of the intermediate variables or
work reorganisation may be an important source of influence on national institutions,
leading to dynamic interactions between variables. These dynamic interactions make the
diversification between the two cases distinct from conventional national institution
theories which see national institutions as being constant
Assumptions Made for the British Telecom URI Project
No full textThis document describes in detail the assumptions which are to be made in defining the security architecture for the URI project. This work is important in that it helps to set the limits to the architecture's scope, gives a basis for informed critiques of the architecture, and provides the designers of implementations based on it with a series of rationales for making design decisions in the light of knowledge of the architecture's objectives. It will also provide a basis for modifying the architecture in a controlled manner should any of these assumptions become invalid over time due to experience or changes in the environment within which designs based on it are operating. This document, and the assumptions presented in it, are to be regarded as provisional conclusions only. As the project advances and knowledge of the environment within which implementations of the architecture will have to operate and the constraints placed on such implementations, these assumptions will need to be re-assessed either continuously or on a regular basis. Our assumptions have diverged in many ways from those in two documents prepared by British Telecom staff for the TINA consortium, [6] and [7]. The reasons for this can be broadly summarised as being due to our desire for independence for the architecture of all design and implementation technical matters, our taking a wider view in identifying the stakeholders in the architecture both with regard to their identities and their degree of sophistication in security-related matters, our belief that access to the services protected by the architecture must be as easy as possible to make it more likely that they will be used, and our assumption that not all of the entities involved in the network will trust each other. We hope that the com..
British Telecom Telephone
No full textDark grey BT telephone. Maker: British Telecom. Date: 1995 (circa) - from the The Betty Smithers Design Collection at Staffordshire University.
Quantum detector tomography of a time-multiplexed superconducting nanowire single-photon detector at telecom wavelengths
No full textSuperconducting nanowire single-photon detectors (SNSPDs) are widely used in telecom wavelength optical quantum information science applications. Quantum detector tomography allows the positive-operator-valued measure (POVM) of a single-photon detector to be determined. We use an all-fiber telecom wavelength detector tomography test bed to measure detector characteristics with respect to photon flux and polarization, and hence determine the POVM. We study the SNSPD both as a binary detector and in an 8-bin, fiber based, Time-Multiplexed (TM) configuration at repetition rates up to 4 MHz. The corresponding POVMs provide an accurate picture of the photon number resolving capability of the TM-SNSPD
Some Observations on the British and German 3G Telecom Auctions
No full textI suggest explanations for the apparently puzzling bidding in the year 2000 British and German 3G telecom auctions. Relative-performance maximisation may have been important, but the outcome of the British auction seems to have been efficient. This paper bundles my comments on two papers presented at the December 2001 CES Ifo conference on the telecom auctions. (For those readers new to the subject, I recommend first reading ‘How (Not) to Run Auctions: the European 3G Telecom Auctions’ European Economic Review 2002 and at www.paulklemperer.org and ‘The Biggest Auction Ever: the Sale of the British 3G Telecom Licenses’ Economic Journal 2002 and also at www.paulklemperer.org.)3G; auctions; bidding; spectrum auctions; telecommunications; UMTS
Some Observations on the British and German 3G Telecom Auctions.
No full textI suggest explanations for the apparently puzzling bidding in the year 2000 British and German 3G telecom auctions. Relative-performance maximisation may have been important, but the outcome of the British auction seems to have been efficient. This paper bundles my comments on two papers presented at the December 2001 CES Ifo conference on the telecom auctions. (For those readers new to the subject, I recommend first reading "How (Not) to Run Auctions: the European 3G Telecom Auctions" European Economic Review 2002 and at www.paulKlemperer.org and "The Biggest Auction Ever: the Sale of the British 3G Telecom Licenses" Economic Journal 2002 and also at www.paulKlemperer.org.
Telecom Quantum Network Node via Atom-Nanophotonic Coupling
No full textWe propose neutral atoms coupled to telecom nanophotonic cavities as quantum network nodes. Our novel protocol for generating atom-telecom photon entanglement enables a scalable network architecture featuring identical qubits and direct telecom operation.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QN/Borregaard groe
Two-photon interference at telecom wavelengths for time-bin-encoded single photons from quantum-dot spin qubits
No full textThis work was supported by the JST through its ImPACT Program, NICT, NSF CCR-08 29694, NIST 60NANB9D9170, Special Coordination Funds for Promoting Science and Technology, and the State of Bavaria. C.L. and M.M.F. acknowledge support through the AFOSR. C.M.N. acknowledges a SU2P Entrepreneurial Fellowship and R.H.H. acknowledges a Royal Society University Research Fellowship.Practical quantum communication between remote quantum memories rely on single photons at telecom wavelengths. Although spin-photon entanglement has been demonstrated in atomic and solid-state qubit systems, the produced single photons at short wavelengths and with polarization encoding are not suitable for long-distance communication, because they suffer from high propagation loss and depolarization in optical fibres. Establishing entanglement between remote quantum nodes would further require the photons generated from separate nodes to be indistinguishable. Here, we report the observation of correlations between a quantum-dot spin and a telecom single photon across a 2-km fibre channel based on time-bin encoding and background-free frequency downconversion. The downconverted photon at telecom wavelengths exhibits two-photon interference with another photon from an independent source, achieving a mean wavepacket overlap of greater than 0.89 despite their original wavelength mismatch (900 and 911 nm). The quantum-networking operations that we demonstrate will enable practical communication between solid-state spin qubits across long distances.Peer reviewe
Privatization : a comparative case study of british telecom (BT) and Korea telecom (KT)
No full text민영화에 대한 논의는 1970년대 후반부터 거론되었다. 전 세계적인 추세에 부흥하며 한국에서도 민영화 계획은 실행되었다. 한국의 민영화는1997년 말의 외환 위기를 계기로 본격화 되었다. 이와 더불어 현 시점에서 가장 중요한 사업 중 하나로 자리 잡고 있는 정보 통신 분야의 중요성은 어느 때 보다 더 부각 되었다. 따라서 이 논문은 한국통신 (KT)과 영국의 영국통신 (BT)의 민영화 사례를 비교 연구하여 민영화의 과정과 필요성에 대해 논하고자 한다. 10여년 전에 민영화가 종결된 BT와 불과 5달 전에 완료된 KT의 민영화 사례를 비교 연구함으로써 선 사례를 통해 KT의 민영화 이후에 방향성을 제시하고자 한다. 비록 민영화가 공기업 문제에 가장 적합한 해결책은 아니지만 최선책이라고는 판단된다.
; This thesis, by examining the cases of privatization in Korea and the United Kingdom aims to discuss respective privatization efforts and the rationale behind it. It will examine the historical background and the mechanisms surrounding the privatization. Privatization has been the mode globally since the late 1970s. With its start in Europe it spread quickly worldwide. The telecom sector, which was under the Post Office was created into a separate company then later privatized. British Telecom was privatized in the mid-80s while Korea Telecom was privatized in Discussion will also be centered on the results and the effects of the privatization efforts. Ultimately, it will seek to suggest a direction for the recently privatized Korea Telecom based on the case of British Telecom. Although, privatization may not be the optimal solution to the problems of public companies, it is the appropriate solution to administer at this time.Abstract = viii
I. INTRODUCTION = 1
II. PRIVATIZATION = 4
A. Privatization in General = 4
B. Privatization Concepts and Significance = 6
1. Public Companies = 6
2. Problems of Public Companies = 7
3. Privatization = 9
a. Definition of Privatization = 9
b. Necessity of Privatization = 10
c. Reasons for Privatization = 12
d. Negative Effects of Privatization = 13
III. PRIVATIZATION OF BRITISH TELECOM = 15
A. Historical Background = 15
B. Privatization of British Telecom = 15
1. Privatization Process at BT = 17
2. Results of the Privatization = 20
IV . PRIVATIZATION OF KOREA TELECOM = 28
A. Historical Background = 28
B. Privatization of Korea Telecom = 28
1. Privatization Process at KT = 30
2. Results of the Privatization = 31
V. CONCLUSION = 38
References = 41
Abstract in Korean = 4
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