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- Kihl, Maria, et al.
(author)
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Measuring real-time performance in distributed object oriented systems
- 1999
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In: Performance and control of network systems III : 20-21 September 1999, Boston, Massachusetts. - 0819434345 ; , s. 248-258
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Conference paper (other academic/artistic)abstract
- The principles of distributed object oriented programming offer great possibilities for flexible architectures in multiple fields. In telecommunications, an architecture called Telecommunication Information Networking Architecture (TINA) has been developed using these very principles. It allows telecommunication services to be implemented using software objects that in turn can be executed in a location transparent way in a network. The location transparency offers great flexibility for service creation, but as the software must be executed somewhere in the network on nodes of finite capacity, performance problems can arise due to inefficient placement of objects causing either overloaded nodes or excessive and unneccesary inter-node communication. To ensure good performance, various measures of load control and load balancing must be taken. We discuss how to measure the performance of a distributed object oriented system and examine two load balancing algorithms that can be used in such systems. of finite capacity, performance problems can arise due to inefficient placement of objects causing either overloaded nodes or excessive and unneccesary inter-node communication. To ensure good performance, various measures of load control and load balancing must be taken. We discuss how to measure the performance of a distributed object oriented system and examine two load balancing algorithms that can be used in such systems.
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- TISCHER, M, et al.
(author)
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ENHANCEMENT OF ORBITAL MAGNETISM AT SURFACES - CO ON CU(100)
- 1995
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In: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 75:8, s. 1602-1605
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Journal article (other academic/artistic)abstract
- By combining magnetic circular x-ray dichroism experiments with first principles electronic structure calculations, we demonstrate that the orbital contribution to magnetism can be strongly enhanced at surfaces. This effect is illustrated for Co grown on
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| 9. |
- TISCHER, M, et al.
(author)
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LOCAL MAGNETISM AND ELEMENT-SPECIFIC SUSCEPTIBILITY FOR NI/CU(100)
- 1995
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In: VACUUM. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0042-207X. ; 46:8-10, s. 1211-1214
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Journal article (other academic/artistic)abstract
- We report magnetic circular X-ray dichroism (MCXD) measurements of ultrathin Ni films grown on Cu(?OO). The Curie temperature of the films is determined by means of a.c. MXCD susceptibility, a technique that allows T-c to be probed precisely and unambiguo
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| 10. |
- Wende, H, et al.
(author)
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Bond length and adsorbate vibrations of (2x3)N/Cu(110): A SEXAFS study
- 1996
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In: PHYSICAL REVIEW B-CONDENSED MATTER. - : AMER INST PHYSICS. - 0163-1829. ; 54:8, s. 5920-5926
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Journal article (other academic/artistic)abstract
- Temperature- and angle-dependent surface-extended x-ray-absorption fine-structure (SEXAFS) measurements on the system (2X3)N/Cu(110) are reported. Three inequivalent adsorption sites of the N atoms within the surface unit cell are identified. The successf
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