212 research outputs found
Hardening Cassandra Against Byzantine Failures
Full text linkCassandra is one of the most widely used distributed data stores. In this work, we analyze Cassandra’s vulnerabilities when facing Byzantine failures and propose protocols for hardening Cassandra against them. We examine several alternative design choices and compare between them both qualitatively and empirically by using the Yahoo! Cloud Serving Benchmark (YCSB) performance benchmark.
Some of our proposals include novel combinations of quorum access protocols with MAC signatures arrays and elliptic curve public key cryptography so that in the normal data path, there are no public key verifications and only a single relatively cheap elliptic curve signature made by the client. Yet, these enable data recovery and authentication despite Byzantine failures and across membership configuration changes. In the experiments, we demonstrate that our best design alternative obtains roughly half the performance of plain (non-Byzantine) Cassandra
BUKTI SEBAGAI KORESPONDING AUTHOR PADA JURNAL 2 OK-Roni Pazla
Full text linkBUKTI SEBAGAI KORESPONDING AUTHOR PADA JURNAL 2 O
Fabrication of nanofiltration membranes via stepwise assembly of oligoamide on alumina supports: Effect of number of reaction cycles on membrane properties
Full text linkStepwise synthesis of oligoamide coating on a porous support: Fabrication of a membrane with controllable transport properties
Full text linkPorous polymeric membranes are widely used in potable water purification, wastewater treatment, the food and
the pharmaceutical industries, and haemodialysis. However, producing specialized membranes with diverse
transport properties is challenging. A method for fabricating membranes with controllable transport properties is
described here by stepwise synthesis of aromatic oligoamide on a porous polymeric support. The use of aromatic
oligoamide affords good water permeance due to its hydrophilic character. Alternate couplings of trimesoyl
chloride and meta-phenylenediamine yielded an oligoamide dendrimer that was covalently bonded to the support.
The water permeance and molecular weight cutoff (MWCO) of the synthesized membranes were controlled
(with values of 4.6 to 543 L·m−2·h−1·bar−1 and 22.6 to 332 kDa, respectively) by adjusting the number of
oligoamide synthesis cycles in the range of 2.5–20.5. The oligoamide membrane with 5.5 synthetic cycles
showed a high rejection of the negatively charged rose bengal dye (95% rejection) with high flux
(126.4 ± 4.2 L·m−2·h−1 at 5.2 bar), as compared with other membranes reported in the literature. The fabricated
membranes are potentially highly useful for the separation of macromolecules with specific ranges of
molecular weight, for industrial separations that require membranes with tunable MWCO ranges, or for the
separation of charged macromolecules
Rewriting our comments and revisiting revision practices: new concepts for sustainable instruction in the writing classroom
No full textThe driving instructional tool in the majority of writing classrooms, comments, is failing students and instructors because comments are a tool, and not a technique. The utility of comments within the writing classroom is only as strong as its pairing with other instructional techniques. Using comments to teach comments is a flawed method of instruction, and if instructors want to properly use comments within their classes, they must first show their students how to use these techniques in improving their writing. Thus far, the focus of facilitating student revision and student growth within writing classrooms has been on the study of specific comments written by instructors on student papers. The study of such comments reveals the differences in styles, modes, and voices projected from those instructors, but it does reveal much about the intended goal of such comments, the advancement of student writing. Looking back on previous research and incorporating a multifaceted approach to revision helps to build sustainable writing instruction. A review of literature of comments suggests placing students in the center of the classroom by enabling students to take control over the revisions of their own work. This process cannot be done without teaching students how to do things with comments and how to use comments to their advantage. Starting from Joseph Harris’ Rewriting, the same steps toward revision which Harris suggests of students should be copied and applied to the way in which instructors facilitate such revision within the classroom. The improvement of student writing requires several steps which target particular issues with the status quo of commenting, and the use of Harris’ text will enable us to identify the steps. Incorporating revision into the classroom, inviting students into conversation about their text, and opening the lines of communication can help improve revision practices in writing classrooms. Through incorporating a new mastery model within the writing classroom, a technique that begins to show students how comments are made and what to do with them, students can begin to internalize the many processes which they can apply to any writing. The teacher’s goal is to help the student internalize the concepts and apply without the direct instruction of the teacher; however, many writing classrooms have lost this focus. If teachers refocus the classroom on the process of writing and even the process of editing and revising, students will become not just stronger students but writers. Adjustments in the writing classroom cannot occur overnight, but incorporating revision techniques into the course will eventually pay off as students learn to revise their work. These techniques, although not new, can prepare students for writing outside the composition classroom.M. A.Includes bibliographical referencesby Roni L. Bie
Dialettica della durata e vita intima. Attualità di Bergson tra accelerazione del tempo e alienazione sociale
No full textIn this paper the Author focuses on the legacy of dialectics through Bergson’s considerations about time and language, recalling two great interpreters of his philosophy: Giuseppe Prezzolini and Gaston Bachelard. If for the former the «philosophy of contingency» enhances the transformation of social reality, preserving, in consonance with Victor Egger’s
book La parole intérieure, the freedom of inner language, the latter proposes a break of the Bergsonian temporal continuity by opting for a plural and discontinuous duration. Thanks to these readings, it is possible to discover the temporal dialectic which regulates contemporary societies, that is, the acceleration of time and the contraction of memory, in order to develop a more humane way of living time and, consequently, to decline the problem of intersubjectivity in an intercultural perspective
Leon Garfield
No full textThrough his historical novels, adventure stories, ghost stories, satires, fairy tales, and retellings of myths and legends, Leon Garfield consistently portrays the mystery of human identity, which he describes as "the only mystery one can unravel endlessly." In this first book-length study of the author of Smith (1967), The Apprentices (1976), John Diamond (1981), and The December Rose (1986), Roni Natov engagingly chronicles the career of a natural storyteller, a man whose work is permeated with the theme of spiritual renewal
Young generations’ hopelessness perpetuates long-term conflicts
No full textFunding Information: The authors would like to thank Roni Porat for their valuable contribution in the conceptualization stage of the research, and Shir Harpaz, Natali Afrimov, and Dan Heskia for their assistance in the data analysis. This work was supported by an Israel Science Foundation Grant (3105/21) to the first author (BSH). Funding Information: The authors would like to thank Roni Porat for their valuable contribution in the conceptualization stage of the research, and Shir Harpaz, Natali Afrimov, and Dan Heskia for their assistance in the data analysis. This work was supported by an Israel Science Foundation Grant (3105/21) to the first author (BSH). Publisher Copyright: © 2023, The Author(s).Transforming long-term conflicts into peaceful intergroup relations is one of the most difficult challenges for humanity. Such meaningful social changes are often driven by young people. But do young people living in contexts of long-term conflicts believe that change is even possible? In a series of six studies (Ntotal = 119,671) over two decades and across two unrelated intractable conflicts in Israel/Palestine and Cyprus, we found that younger (compared to older) generations from both respective rival groups have less hope for peace, and consequently less conciliatory attitudes. We also show that this gradual improvement of peace-promoting emotions and attitudes with increasing age can be experimentally accelerated in young people through a virtual reality-based aging simulation. These findings provide a new perspective on the fundamental question of why long-term conflicts are so difficult to resolve and highlight the importance of instilling hope in young generations to advance peace processes.Peer reviewe
DETECTION AND IDENTIFICATION OF SEED BORNE BACTERIA OF MAIZE AND THEIR MANAGEMENT WITH SELECTED Cu-FUNGICIDES
Full text linkA Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements for the degree of
Master of Science
In
Plant Pathology
Semester: January-June, 2011Approved by:
Nazneen Sultana
Chairman
Examination Committee
Department of Plant Pathology
Sher-e-Bangla Agricultural University, Dhaka
Nazneen Sultana
Associate Professor
Department of Plant Pathology
Supervisor
Mrs. Nasim Akhtar
Professor
Department of Plant Pathology
Co-Supervisor
Ref:………… Date:…………….
CERTIFICATE
This is to certify that thesis entitled, “DETECTION AND IDENTIFICATION OF SEED BORNE BACTERIA OF MAIZE AND THEIR MANAGEMENT WITH SELECTED Cu-FUNGICIDES” submitted to the Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE in PLANT PATHOLOGY, embodies the result of a piece of bona fide research work carried out by KADAMBARI ROY, Registration No: 05-01829 under my supervision and guidance. No part of the thesis has been submitted for any other degree or diploma.
I further certify that such help or source of information, as has been availed of during the course of this investigation has been duly been acknowledged by her.
Nazneen Sultana
Associate Professor
Department of Plant Pathology
Sher-e-Bangla Agricultural University
Dhaka-1207, Bangladesh
Email: nazneensau @yahoo.com
Cell No.01733955171
………………………………..
( NAZNEEN SULTANA )
Supervisor
Dated: 20th September, 2012
Dhaka, Bangladesh
DEDICATED TO
MY
BELOVED PARENTS
ACKNOWLEDGEMENT
First and foremost the author would like to thank Almighty God for what he has given to the author and whose abundant grace and mercy has enabled for successful completion of the research, preparation of manuscript its submission in time as a partial requirement for the degree of MS (Master of Science) in Plant pathology.
And after that the author expresses her greatful respect, wishes, whole hearted gratitude and appreciation to her benevolent teacher and supervisor Associate Professor and Chairman Nazneen Sultana, Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka, for her precious suggestions, constructive criticism, proper guidance and helpful comments through out the study.
The author expresses with a deep sense of respect to her Co-supervisor Mrs. Nasim Akhtar Professor, Department of plant Pathology, Sher-e-Bangla Agricultural University, Dhaka for her cordial inspiration, guidance and helpful suggestions for its improvement. Her scholastic supervision and constant inspiration brought this thesis up to its present standard.
Cordial thanks and honors to Dr. Md. Rafiqul Islam, Professor, Department of plant Pathology, Sher-e-Bangla Agricultural University, Dhaka for his valuable advice, criticism, suggestions and provision of facilities and support needed to undertake this research work.
The authoress expresses her sincere appreciation and gratitude to her respectable teachers, Professor Dr. M. Salauddin M. Chowdhury and Associate Professor Dr.F.M. Aminuzzaman Department of plant Pathology, Sher-e-Bangla Agricultural University, Dhaka, for their inspiration and encouragement throughout the whole period of the research work.
The author also conveys her special thanks to Shanjida Haque, Nargis Islam Roni, Mamun-or-Rashid and Matin Sarkar for their cordial co-operation whenever required. The author is greatful to the office staffs of the Department of Plant Pathology for their co-operation and help.
The whole credit for the achievements goes to the author’s family and highly gratitude to her great father Late Upendra Nath Roy, mother Jothsna Roy, sister and brother who always stood by her during tough times. They supported, encouraged her continuously to study and blessing in all phases of her academic life; they were motivators from near or far. They were her strength and their constant encouragement was an inspiration.
June, 2011
Place: SAU, Dhaka The Author
DETECTION AND IDENTIFICATION OF SEED BORNE BACTERIA OF MAIZE AND THEIR MANAGEMENT WITH SELECTED Cu-FUNGICIDES
BY
KADAMBARI ROY
REGISTRATION NO. : 05-1829
ABSTRACT
The experiment was carried out in the Department of Plant Pathology of Sher-e-Bangla Agricultural University, Dhaka during the period of January, 2012 to August, 2012 to determine the prevalence of seed borne bacteria of hybrid maize variety NK-40 and their management with some selected Cu-fungicides. Three bacterial genera viz. Acidovorax sp, Burkholderia sp and Ralstonia sp were isolated from maize seeds. Moreover, three Cu-fungicides viz. Sulcox 50WP, Champion 50WP and Cupravit 50WP were used as treatments for management. Bioassay of these fungicides against different bacteria were done and observed that Sulcox 50WP @ 0.3%, Champion 50WP @ 0.4% and Cupravit 50WP @ 0.3% produced remarkable inhibition zone against Acidovorax sp, Burkholderia sp and Ralstonia sp. Effect of seed treatments were studied using nutrient agar plate method, water agar test tube method and rolled paper towel method. In nutrient agar plate method, germination varied from 94.83-98.67%, where the effect of Cu-fungicides was insignificant. In water agar test tube method, the highest number of normal seedlings (69.00%) were recorded when seeds were treated with Cupravit 50WP @ 0.3% and the lowest was recorded in control (44.67%). The lowest number of abnormal seedlings and diseased seedlings (20% and 5%, respectively) were recorded when the seeds were treated with Cupravit 50WP @ 0.3%. In rolled paper towel method, Cupravit 50WP @ 0.3% showed best performance regarding germination, shoot length, root length and vigor index. The vigor index varied from 885.50-2488.40, where the highest count was recorded in Cupravit 50WP @ 0.3% and lowest in control
NUCLEAR LOCALIZATION OF DMP1 AND DSPP IN VARIOUS CELL LINES
Full text linkObjective: To examine Dentine matrix protein 1(DMP1) and Dentine sialophosphoprotein (DSPP) expression and subcellular localization in various cell lines to better understand their function. Methods: RT-PCR, immunofluorescent staining and Western-blotting analyses were used to determine the expression and subcellular localization of DMP1 and DSPP in various cell lines, including odontoblast-like (17IIA11), preosteoblast (MC3T3-E1), mesenchymal cells (C3H10T1/2), and human dental pulp stem cells (DPSC). In addition, a haemagglutinin (HA) tagged DMP1 expression construct was generated and examined for its subcellular localization in COS-7 cells. Results: Western-blot analysis showed the presence of DMP1 and DSPP in the cytoplasmic and nuclear extracts of MC3T3-E1, 17IIA11, and C3H10T1/2 cells. DMP1 and DSPP transcripts were consistently detected in all three cell lines by RT-PCR analysis. However, immunofluorescent detection of DMP1 revealed the presence of two distinct subpopulations of cells with either nuclear or cytoplasmic staining; this phenomenon was not noticed with DSPP immunofluorescence. Nuclear and cytoplasmic DMP1 was confirmed in MC3T3-E1 cells by immuofluorescent staining using a rabbit polyclonal antibody; and the staining was inhibited when the antibody was preincubated with the synthetic peptide used to generate the antibody, confirming the specificity of the antibody. Nuclear and cytoplasmic localization was also observed in COS-7 cells transfected with HA-tagged DMP1 expression construct when detected with an antibody against the HA tag. Conclusion: These findings suggest that, apart from their role as a constituent of dentin/bone matrix, both DMP1 and DSPP might play a regulatory or structural role in the nucleus that is not unique to the odontoblast/osteoblast cells.Oral Biolog
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