Image Processing Based Notice Board Reader Using Raspberry Pi

The main intention behind this paper is to reduce the “Manpower”; hence we are developing a open source audio notice software – A notice board reader with raspberry pi controls. The image processing is used in the proposed system as Image processing is the process of performing mathematical functions and operations of an image. So, this paper presents the implementation of image processing operations on Raspberry Pi. Raspberry Pi features a Broadcom system on a chip (SOC) which includes ARM compatible CPU. This platform is mainly based on python. Most of the access technology tools built for notice board they are built on the two basic building blocks of OCR software and Text-to-Speech (TTS) system. In this paper captured images are converted into the text through the use of OCR and the text files are processed by an open CV library and using E-speak command audio output is achieved

The Geroch group in the Ashtekar formulation

We study the Geroch group in the framework of the Ashtekar formulation. In the case of the one-Killing-vector reduction, it turns out that the third column of the Ashtekar connection is essentially the gradient of the Ernst potential, which implies that the both quantities are based on the ``same'' complexification. In the two-Killing-vector reduction, we demonstrate Ehlers' and Matzner-Misner's SL(2,R) symmetries, respectively, by constructing two sets of canonical variables that realize either of the symmetries canonically, in terms of the Ashtekar variables. The conserved charges associated with these symmetries are explicitly obtained. We show that the gl(2,R) loop algebra constructed previously in the loop representation is not the Lie algebra of the Geroch group itself. We also point out that the recent argument on the equivalence to a chiral model is based on a gauge-choice which cannot be achieved generically.Comment: 40 pages, revte

Fundamentals of the LISA Stable Flight Formation

The joint NASA-ESA mission LISA relies crucially on the stability of the three spacecraft constellation. Each of the spacecraft is in heliocentric orbits forming a stable triangle. The principles of such a formation flight have been formulated long ago and analysis performed, but seldom presented if ever, even to LISA scientists. We nevertheless need these details in order to carry out theoretical studies on the optical links, simulators etc. In this article, we present in brief, a model of the LISA constellation, which we believe will be useful for the LISA community.Comment: 9 Pages, 2 Figure Submitted to Classical and Quantum Gravit

DEVELOPING A NOVEL APPROACH FOR IMPROVING AVAILABILITY OF JOBTRACKER IN HADOOP

Cluster based distributed system containssingles JobTracker and multiple TaskTracker. TaskTracker performs MapReduce operation on DataNode. In this approach, JobTracker facing single point of failure problem. The solution includes theAvatarNode and ZooKeeper. Firstly, AvatarNode uses efficient checkpoint strategy to manage temporary namespace. AvatarNode gives temporary space to store the metadata about current job and flush that data after successful job execution. Secondly, ZooKeeper which is used for session monitoring by communicating with failover manager that is residing in JobTracker andAvatarNode This approach reduces Remote Procedure Call (RPC) traffic between Backup Node and DataNodeby direct communication of JobTracker and AvatarNode

Developing A Novel Approach for Improving Availability of Jobtracker in Hadoop

Cluster based distributed system containssingles JobTracker and multiple TaskTracker. TaskTracker performs MapReduce operation on DataNode. In this approach, JobTracker facing single point of failure problem. The solution includes theAvatarNode and ZooKeeper. Firstly, AvatarNode uses efficient checkpoint strategy to manage temporary namespace. AvatarNode gives temporary space to store the metadata about current job and flush that data after successful job execution. Secondly, ZooKeeper which is used for session monitoring by communicating with failover manager that is residing in JobTracker andAvatarNode This approach reduces Remote Procedure Call (RPC) traffic between Backup Node and DataNodeby direct communication of JobTracker and AvatarNode

Highly Enantioselective Pd-Catalyzed Synthesis of P‑Stereogenic Supramolecular Phosphines, Self-Assembly, and Implication

Metal-catalyzed asymmetric addition of a secondary phosphine to an aryl halide is one of the most efficient and reliable approaches for the construction of enantiopure carbon–phosphorus bonds. An isolated Pd­(II) complex (<b>5</b>) catalyzes the carbon–phosphorus coupling reaction between tolylphenylphosphine (<b>1a</b>) and 3-iodophenylurea (<b>2b</b>), which proceeds with an unprecedented enantiomeric excess (ee) of 97%. The generality of the strategy has been demonstrated by preparing a small library of a new class of P-stereogenic phosphines with an in-built hydrogen bonding motif for the first time. The P-stereogenic phosphines self-assemble on a metal template via deliberately installed hydrogen-bonding motifs and mimic the bidentate ligand coordination. Interestingly, when it was employed in asymmetric hydrogenation, the supramolecular phosphine {1-(3-(phenyl­(<i>o</i>-tolyl)­phosphanyl)­phenyl)­urea} (<b>6b</b>) produced the corresponding hydrogenated product with the highest enantiomeric excess of 99% along with excellent conversion, demonstrating the potential of these enantioenriched P-chirogenic supramolecular phosphines in asymmetric catalysis

Highly Enantioselective Pd-Catalyzed Synthesis of P‑Stereogenic Supramolecular Phosphines, Self-Assembly, and Implication

Metal-catalyzed asymmetric addition of a secondary phosphine to an aryl halide is one of the most efficient and reliable approaches for the construction of enantiopure carbon–phosphorus bonds. An isolated Pd­(II) complex (<b>5</b>) catalyzes the carbon–phosphorus coupling reaction between tolylphenylphosphine (<b>1a</b>) and 3-iodophenylurea (<b>2b</b>), which proceeds with an unprecedented enantiomeric excess (ee) of 97%. The generality of the strategy has been demonstrated by preparing a small library of a new class of P-stereogenic phosphines with an in-built hydrogen bonding motif for the first time. The P-stereogenic phosphines self-assemble on a metal template via deliberately installed hydrogen-bonding motifs and mimic the bidentate ligand coordination. Interestingly, when it was employed in asymmetric hydrogenation, the supramolecular phosphine {1-(3-(phenyl­(<i>o</i>-tolyl)­phosphanyl)­phenyl)­urea} (<b>6b</b>) produced the corresponding hydrogenated product with the highest enantiomeric excess of 99% along with excellent conversion, demonstrating the potential of these enantioenriched P-chirogenic supramolecular phosphines in asymmetric catalysis

Highly Enantioselective Pd-Catalyzed Synthesis of P‑Stereogenic Supramolecular Phosphines, Self-Assembly, and Implication

Metal-catalyzed asymmetric addition of a secondary phosphine to an aryl halide is one of the most efficient and reliable approaches for the construction of enantiopure carbon–phosphorus bonds. An isolated Pd­(II) complex (<b>5</b>) catalyzes the carbon–phosphorus coupling reaction between tolylphenylphosphine (<b>1a</b>) and 3-iodophenylurea (<b>2b</b>), which proceeds with an unprecedented enantiomeric excess (ee) of 97%. The generality of the strategy has been demonstrated by preparing a small library of a new class of P-stereogenic phosphines with an in-built hydrogen bonding motif for the first time. The P-stereogenic phosphines self-assemble on a metal template via deliberately installed hydrogen-bonding motifs and mimic the bidentate ligand coordination. Interestingly, when it was employed in asymmetric hydrogenation, the supramolecular phosphine {1-(3-(phenyl­(<i>o</i>-tolyl)­phosphanyl)­phenyl)­urea} (<b>6b</b>) produced the corresponding hydrogenated product with the highest enantiomeric excess of 99% along with excellent conversion, demonstrating the potential of these enantioenriched P-chirogenic supramolecular phosphines in asymmetric catalysis

Synthesis of azo compounds containing thymol moiety

329-331The present work includes the synthesis of azo compounds containing thymol moiety