This query concerns only resources held in libraries.
5 results
Sort by:
Expand to all references (without full text)
• Book
Select

### Laser Communication and Propagation through the Atmosphere and Oceans, 13-15 August 2012, San Diego, CA, USA

Eijk, A.M.J., Davis, C.C., Hammel, S.M., Majumdar, A.K.
NARCIS (National Academic Research and Collaborations Information System)
Available
Title: Laser Communication and Propagation through the Atmosphere and Oceans, 13-15 August 2012, San Diego, CA, USA
Author: Eijk, A.M.J.; Davis, C.C.; Hammel, S.M.; Majumdar, A.K.
Publisher: SPIE
Date: 2012
Subject: Physics ; Laser Communucation ; Atmospheric Propagation ; Defence Research ; Defence, Safety And Security ; Physics & Electronics ; Ed - Electronic Defence ; Ts - Technical Sciences
Identifier: 9780819492340 (ISBN)
• Article
Select

### Semantic Based Concurrency Control of Open Nested Transactions in Active Object Oriented Database Management Systems

Kangsabanik, Prithwish, Mall, R., Majumdar, A.K.
Distributed and Parallel Databases, 2000, Vol.8(2), pp.181-222 [Peer Reviewed Journal]
Springer Science & Business Media B.V.
Available
Title: Semantic Based Concurrency Control of Open Nested Transactions in Active Object Oriented Database Management Systems
Author: Kangsabanik, Prithwish; Mall, R.; Majumdar, A.K.
Subject: active database ; concurrency control ; object oriented systems
Description: Active object oriented database management systems (AODBMS) are finding increasing application in different application domains and especially for cooperative and long duration activity management. In this paper, we propose a concurrency control mechanism for open nested transactions in an AODBMS. It exploits the semantics of the transactions to achieve controlled cooperation and concurrency among the transactions. Atomic AODBMS transactions are treated as base transactions. A complex transaction type is formed from a collection of base and complex transactions, a set of detached mode ECA rules and a state transition model. The cooperation semantics of a complex transaction type with other complex transaction types is specified by associating with each state of a complex transaction, a set of cooperating complex transaction types. The abort semantics of a complex transaction type is specified by means of compensating base transactions. We define a correct class of schedule called CoopComp-schedule which satisfies the state transition semantics of the individual complex transactions and also maintains the cooperation and compensation semantics of the individual complex transactions within the generated schedule. A concurrency control scheme called NP-QuadLock for generating only CoopComp-schedules has been provided. The proof of correctness of the proposed concurrency control mechanism is also given.
Is part of: Distributed and Parallel Databases, 2000, Vol.8(2), pp.181-222
Identifier: 0926-8782 (ISSN); 1573-7578 (E-ISSN); 10.1023/A (DOI)
• Article
Select

### Magnetic phase transitions in Fe 80-x Ni x Cr 20 (14 ⩽ x ⩽ 30) alloy studied by using 57 Fe Mössbauer spectroscopy

Bandyopadhyay, D., Singru, R.M., Majumdar, A.K.
Hyperfine Interactions, 1999, Vol.122(3), pp.239-252 [Peer Reviewed Journal]
Springer Science & Business Media B.V.
Available
Title: Magnetic phase transitions in Fe 80-x Ni x Cr 20 (14 ⩽ x ⩽ 30) alloy studied by using 57 Fe Mössbauer spectroscopy
Author: Bandyopadhyay, D.; Singru, R.M.; Majumdar, A.K.
Subject: Physics ; Surfaces and Interfaces, Thin Films ; Nuclear Physics, Heavy Ions, Hadrons ; Atoms, Molecules, Clusters and Plasmas ; Condensed Matter ; Physics;
Description: This paper reports 57 Fe Mössbauer spectroscopic studies of the polycrystalline samples of the substitutionally disordered, isostructural (fcc), ternary alloy system Fe 80-x Ni x Cr 20 for x = 30, 26, 19 and 14 in the temperature range of 10–295 K. The data have been analyzed in terms of the magnetic phase transitions occurring in these alloys by examining the temperature dependence of the various Mössbauer parameters like line‐width, center shift, resonance area, distribution of hyperfine field, P(H) , and the average hyperfine field 〈H〉. An estimate of the magnetic transition temperature T C is made for the alloys with x = 30 and 26 and these results are compared with those previously obtained by magnetic measurements and neutron diffraction experiments. The data for the second order Doppler shift have been analyzed to estimate the Debye temperature ΘD for alloys with x = 30 and 26.
Is part of: Hyperfine Interactions, 1999, Vol.122(3), pp.239-252
Identifier: 0304-3843 (ISSN); 1572-9540 (E-ISSN); 10.1023/A (DOI)
• Several versions