Perspectives of Information Systems

Savolainen, Vesa

doi:10.1007/978-1-4612-1464-9

Cited by 6 publications

(4 citation statements)

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“…For optimized 1300 nm InGaAsP QW structures, threshold current densities of approximately 1650-1700 A cm −2 were achieved for devices with the cavity length of 500 µm at the operation temperature of 80 • C, as reported by Belenky et al [36]. The threshold current density of the 1300 nm diode lasers based on the InGaAlAs QW on InP, with the cavity length of 1000 µm, has been reported as approximately 1350 A cm −2 at the temperature of 80 • C [37]. The InGaAsN QW lasers require only a single QW active region for high temperature operation, owing to the larger material gain parameter and better electron confinement in the QW.…”

Section: Lasing Characteristics Of Ingaasn Qw Laserssupporting

confidence: 54%

“…To compare the lasing performance of the 1300 nm InGaAsN QW lasers with those of the conventional InP technology, we list the published results that represent some of the best performing 1300 nm diode lasers based on conventional InP technology (InGaAsP QW [36] and InGaAlAs QW [37]), as shown in figure 11. Due to the low material gain parameter, carrier leakage, and Auger recombination, typically 1300 nm InGaAsP-InP QW lasers require multiple QWs, ranging from 9 to 14 QWs [36].…”

Section: Lasing Characteristics Of Ingaasn Qw Lasersmentioning

confidence: 99%

“…Due to the low material gain parameter, carrier leakage, and Auger recombination, typically 1300 nm InGaAsP-InP QW lasers require multiple QWs, ranging from 9 to 14 QWs [36]. The 1300 nm InGaAlAs QW requires approximately 4-6 QWs for optimized structures [37].…”

Section: Lasing Characteristics Of Ingaasn Qw Lasersmentioning

confidence: 99%

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Physics and characteristics of high performance 1200 nm InGaAs and 1300–1400 nm InGaAsN quantum well lasers obtained by metal–organic chemical vapour deposition

Tansu

Yeh

Mawst

2004

J. Phys.: Condens. Matter

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Here we present the physics and device characteristics of high performance strain-compensated MOCVD-grown 1200 nm InGaAs and 1300-1400 nm InGaAsN quantum well (QW) lasers. Utilizing the GaAsP barriers surrounding the highly strained InGaAsN QW active regions, high performance QW lasers have been realized from 1170 nm up to 1400 nm wavelength regions. The design of the InGaAsN QW active region utilizes an In content of approximately 40%, which requires only approximately 0.5-1% N content to realize emission wavelengths up to 1300-1410 nm. Threshold current densities of only 65-90 A cm −2 were realized for InGaAs QW lasers, with emission wavelengths of 1170-1233 nm. Room temperature threshold and transparency current densities of 210 and 75-80 A cm −2 , respectively, have been realized for 1300 nm InGaAsN QW lasers. Despite the utilization of the highly strained InGaAsN QW, multiple-QW lasers have been realized with excellent lasing performance. Methods for extending the lasing emission wavelength up to 1400 nm with InGaAsN QW lasers are also presented. Theoretical analysis and experiments also show suppression of thermionic carrier leakages in InGaAsN QW systems leading to high performance lasers operating at high temperature.

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Section: Lasing Characteristics Of Ingaasn Qw Laserssupporting

confidence: 54%

Section: Lasing Characteristics Of Ingaasn Qw Lasersmentioning

confidence: 99%

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Physics and characteristics of high performance 1200 nm InGaAs and 1300–1400 nm InGaAsN quantum well lasers obtained by metal–organic chemical vapour deposition

Tansu

Yeh

Mawst

2004

J. Phys.: Condens. Matter

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“…Some patients have benefited from treatment with azathioprine or methotrexate [92,93]. Chlorambucil has also shown some efficacy against JIA-associated renal amyloidosis, as compared with historical controls [94]. However, the associated risk of myelotoxicity, leukaemia and sterility prompts the continued search for alternative therapies.…”

Section: Aa Amyloidosismentioning

confidence: 98%

The Expanding Role of Tumor Necrosis Factor-α Inhibitors in the Management of Rheumatic Diseases

Miedany¹

2004

MCRO

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He development of biological agents has provided rheumatologists with a variety of new and effective treatment options. The success of these agents in the treatment of rheumatoid arthritis, has spurred research into novel targets for the management of other rheumatic diseases. In addition to rheumatoid arthritis, TNF-α inhibitors (infliximab and/or etanercept) have been approved for the use in patients suffering from Crohn's disease, ankylosing spondylitis and psoriatic arthritis. Also the treatment of persistent monoarticular and oligoarticular arthritis, resistant to disease modifying antirheumatic drugs and steroid therapies, with intra-articular anti-TNF therapy appears promising. Most importantly, such therapies have improved the quality of life and clinical outcomes in this group of patients. This article reviews the recent clinical studies published and ongoing research on the treatment of rheumatic diseases, other than rheumatoid arthritis, using these biological agents.

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Structuring of Temporary Multi-Organizations: Contingency Theory in the Building Sector

Lizarralde

Blois

Latunova

2011

Project Management Journal

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The appropriate management of construction projects presupposes a clear comprehension of the structure of the temporary multi‐organization (TMO); however, most of the work on the structuring of TMOs has concentrated either on procurement strategies or the structure of individual organizations. Current approaches, therefore, do not fully consider the roles of all project stakeholders, the informal communications, and the complexity of the client organization. Instead, we argue that the contingency theory contributes to the understanding of the structuring of TMOs. The analysis of 27 recent construction projects allows us to identify two contingency factors and patterns of configuration of the TMO.

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Perspectives of Information Systems

Abstract: Library of Congress Cataloging-in-Publication Data Savolainen, Vesa. Perspectives of Information Systems I Vesa Savolainen p. cm. Includes bibliographical references (p.).

Cited by 6 publications

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Physics and characteristics of high performance 1200 nm InGaAs and 1300–1400 nm InGaAsN quantum well lasers obtained by metal–organic chemical vapour deposition

Physics and characteristics of high performance 1200 nm InGaAs and 1300–1400 nm InGaAsN quantum well lasers obtained by metal–organic chemical vapour deposition

The Expanding Role of Tumor Necrosis Factor-α Inhibitors in the Management of Rheumatic Diseases

Structuring of Temporary Multi-Organizations: Contingency Theory in the Building Sector

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Perspectives of Information Systems

Abstract: Library of Congress Cataloging-in-Publication Data Savolainen, Vesa. Perspectives of Information Systems I Vesa Savolainen p. cm. Includes bibliographical references (p.).

Cited by 6 publications

References 0 publications

Physics and characteristics of high performance 1200 nm InGaAs and 1300–1400 nm InGaAsN quantum well lasers obtained by metal–organic chemical vapour deposition

Physics and characteristics of high performance 1200 nm InGaAs and 1300–1400 nm InGaAsN quantum well lasers obtained by metal–organic chemical vapour deposition

The Expanding Role of Tumor Necrosis Factor-&#945; Inhibitors in the Management of Rheumatic Diseases

Structuring of Temporary Multi-Organizations: Contingency Theory in the Building Sector

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The Expanding Role of Tumor Necrosis Factor-α Inhibitors in the Management of Rheumatic Diseases