FELIX A full acceptance detector at the LHC

The FELIX collaboration has proposed the construction of a full acceptance detector for the LHC, to be located at Intersection Region 4, and to be commissioned concurrently with the LHC. The primary mission of FELIX is QCD: to provide comprehensive and definitive observations of a very broad range of strong-interaction processes. This paper reviews the detector concept and performance characteristics, the physics menu, and plans for integration of FELIX into the collider lattice and physical environment. The current status of the FELIX Letter of Intent is discussed.Comment: 11 pages, 7 figures. To be published in "Proceedings of the XXVII International Symposium on Multiparticle Dynamics, Frascati (Rome), Italy 8-12 Sept. 1997 (Nuclear Physics B, Proceedings Supplement)

Book Review: Jnaneshvari

A review of Jnaneshvari by Felix Machado

Mayle v. Felix

Following his murder conviction, Felix filed a pro se habeas petition alleging Sixth Amendment violations at trial The petition was filed within the one-year Antiterrorism and Effective Death Penalty Act deadline. He was later appointed counsel, who filed an amended petition alleging Fifth Amendment violations; but that petition was filed five months after the AEDPA deadline had passed. The Court held that the amended petition was not saved by the Relation Back doctrine because it did not share with the earlier claims a common core of operative facts

Mayle v. Felix

Following his murder conviction, Felix filed a pro se habeas petition alleging Sixth Amendment violations at trial The petition was filed within the one-year Antiterrorism and Effective Death Penalty Act deadline. He was later appointed counsel, who filed an amended petition alleging Fifth Amendment violations; but that petition was filed five months after the AEDPA deadline had passed. The Court held that the amended petition was not saved by the Relation Back doctrine because it did not share with the earlier claims a common core of operative facts

Student Chamber Music Concert, February 21, 1991

This is the concert program of the Student Chamber Music Concert performance on Thursday, February 21, 1991 at 6:30 p.m., at the Boston University Concert Hall, 855 Commonwealth Avenue, Boston, Massachusetts. Works performed were String Quartet in a minor, Op. 13 by Felix Mendelssohn, String Quartet by Samuel Barber, String Quartet in e minor, No. 1 by Bedrich Smetana, String Quartet in E-flat Major, Op. 12 by Felix Mendelssohn, and Trio for oboe, horn and piano, Op. 88 by Carl Reinecke. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Vertical Transmission of a Phylogenetically Complex Microbial Consortium in the Viviparous Sponge \u3cem\u3eIrcinia Felix\u3c/em\u3e

Many marine demosponges contain large amounts of phylogenetically complex yet highly sponge-specific microbial consortia within the mesohyl matrix, but little is known about how these microorganisms are acquired by their hosts. Settlement experiments were performed with the viviparous Caribbean demosponge Ircinia felix to investigate the role of larvae in the vertical transmission of the sponge-associated microbial community. Inspections by electron microscopy revealed large amounts of morphologically diverse microorganisms in the center of I. felix larvae, while the outer rim appeared to be devoid of microorganisms. In juveniles, microorganisms were found between densely packed sponge cells. Denaturing gradient gel electrophoresis (DGGE) was performed to compare the bacterial community profiles of adults, larvae, and juvenile sponges. Adults and larvae were highly similar in DGGE band numbers and banding patterns. Larvae released by the same adult individual contained highly similar DGGE banding patterns, whereas larvae released by different adult individuals showed slightly different DGGE banding patterns. Over 200 bands were excised, sequenced, and phylogenetically analyzed. The bacterial diversity of adult I. felix and its larvae was comparably high, while juveniles showed reduced diversity. In total, 13 vertically transmitted sequence clusters, hereafter termed “IF clusters,” that contained sequences from both the adult sponge and offspring (larvae and/or juveniles) were found. The IF clusters belonged to at least four different eubacterial phyla and one possibly novel eubacterial lineage. In summary, it could be shown that in I. felix, vertical transmission of microorganisms through the larvae is an important mechanism for the establishment of the sponge-microbe association

Optimization on fixed low latency implementation of GBT protocol in FPGA

In the upgrade of ATLAS experiment, the front-end electronics components are subjected to a large radiation background. Meanwhile high speed optical links are required for the data transmission between the on-detector and off-detector electronics. The GBT architecture and the Versatile Link (VL) project are designed by CERN to support the 4.8 Gbps line rate bidirectional high-speed data transmission which is called GBT link. In the ATLAS upgrade, besides the link with on-detector, the GBT link is also used between different off-detector systems. The GBTX ASIC is designed for the on-detector front-end, correspondingly for the off-detector electronics, the GBT architecture is implemented in Field Programmable Gate Arrays (FPGA). CERN launches the GBT-FPGA project to provide examples in different types of FPGA. In the ATLAS upgrade framework, the Front-End LInk eXchange (FELIX) system is used to interface the front-end electronics of several ATLAS subsystems. The GBT link is used between them, to transfer the detector data and the timing, trigger, control and monitoring information. The trigger signal distributed in the down-link from FELIX to the front-end requires a fixed and low latency. In this paper, several optimizations on the GBT-FPGA IP core are introduced, to achieve a lower fixed latency. For FELIX, a common firmware will be used to interface different front-ends with support of both GBT modes: the forward error correction mode and the wide mode. The modified GBT-FPGA core has the ability to switch between the GBT modes without FPGA reprogramming. The system clock distribution of the multi-channel FELIX firmware is also discussed in this paper