Alcatel-Lucent

About: Alcatel-Lucent is a based out in Stuttgart, Germany. It is known for research contribution in the topics: Signal & Network packet. The organization has 37003 authors who have published 53332 publications receiving 1430547 citations. The organization is also known as: Alcatel-Lucent S.A. & Alcatel.

Inversion-symmetry breaking in the noncollinear magnetic phase of the triangular-lattice antiferromagnet Cu Fe O 2

Abstract: Magnetoelectric and magnetoelastic phenomena have been investigated on a frustrated triangular antiferromagnetic lattice in $\mathrm{Cu}\mathrm{Fe}{\mathrm{O}}_{2}$. Inversion-symmetry breaking, manifested as a finite electric polarization, was observed in noncollinear (helical) magnetic phases and not in collinear magnetic phases. This result demonstrates that the noncollinear spin structure plays an important role in inducing electric polarization. Based on these results we suggest that frustrated magnets (often favoring noncollinear configurations) are favorable candidates for a new class of magnetoelectric materials.

1.5-μm-band wavelength conversion based on cascaded second-order nonlinearity in LiNbO 3 waveguides

Abstract: We report wavelength conversion and spectral inversion using cascaded second-order nonlinearity in periodically poled LiNbO/sub 3/ waveguides pumped at 1.5 /spl mu/m. The converter has an internal conversion efficiency of -8 dB, a conversion bandwidth of 76 nm, and a constant conversion efficiency for the 50-dB range of signal powers tested.

Applying Use Cases: A Practical Guide

Abstract: (All chapters, except 7 and 9, conclude with a Chapter Review) Foreword Preface Acknowledgments 1 Getting Started An Iterative Software Process An Example Project The Project Description Starting Risk Analysis 2 Identifying System Boundaries Identifying Actors Identifying Use Cases Describing Actors and Use Cases Handling Time Potential Boundary Problems Scoping the Project 3 Primary Scenarios The Complete Use Case Handling Complex Use Cases Scenarios The Primary Scenario Guidelines for Correctness and Completeness Other Requirements Presentation Styles 4 Secondary Scenarios Finding Secondary Scenarios Detailing Significant Behavior Use Case Description Revisited 5 Diagramming Use Cases Activity Diagrams Diagramming the User Interface 6 Dividing Large Systems Architectural Patterns Testing the Architecture with Use Cases Defining Interfaces Between Subsystems Allocating Use Cases to Subsystems Creating Subsystem Documentation 7 Documenting Use Cases Documentation Templates Order-Processing System Use Cases Order Processing System System Level Use Cases 8 Use Cases and the Project Plan Planning the Project Estimating Work with Use Cases 9 Reviews Review for Completeness Review for Potential Problems Review with End Users Review with Customers Review with Development Reviewers Adding Flexibility to Your System 10 Constructing and Delivering a System Key Abstractions of the Domain The Iteration Schedule Delivery and Beyond Final Wrap-Up Appendix A Resource List Appendix B Documentation Templates System or Subsystem Documents Use Case Document Scenario Document Appendix C UML Notation Used in This Book Appendix D Reply Form for the Use Case Estimator Index

Studies of the temperature-dependent phase behavior of long chain n-alkyl thiol monolayers on gold

Abstract: The influences of temperature on the infrared spectra of a docosylthiol (C22) monolayer on a gold substrate are reported. The data suggest that this adsorbate exhibits a complex phase state at 300 K in which gauche conformations concentrated at the chain termina figure prominently. The detailed temperature dependence of the spectral band intensities is found to be very similar in many regards to that of bulk hydrocarbon crystals. At low temperature, band splittings are observed which suggest the lowest energy structure for this adsorbate is one containing two chains per unit cell. A simple lattice argument, consistent with steric models and low‐energy electron diffraction data, is presented to explain these observations.

Synchronization of mailboxes of different types

Abstract: The contents of a pair of mailboxes (21, 31), one of which resides in an e-mail system (29) and the other of which resides in a voice-mail system (39), are automatically synchronized both in message content and in message state by a synchronizer (10), even though messages in the two mailboxes may have different data structures and carry information expressed in different media and having different formats. Synchronization is effected by automatically creating a corresponding message in one mailbox for every message that arrives in the other mailbox of the mailbox pair. If the corresponding message does not contain all of the information carried by the original message--for example, because some information in the original message is expressed in a medium or has a format that is incompatible, or cannot be made compatible by conversion, with the other system--a partial-copy indication (217) is raised for the corresponding message, and the behavior of synchronization is altered to protect the original message contents. The behavior of synchronization may also be tailored to accommodate automatic message expiration, or to synchronize message-header notifications only.