3,033 research outputs found
No-hop: In-network Distributed Hash Tables
No full textWe make a case for a distributed hash table lookup in the network data plane. We argue that the lookup time performance of distributed hash tables can be further improved via an in-network data plane implementation. To this end, we introduce No-hop, an in-network distributed hash table implementation, which leverages the data plane programmability at line rate gained from P4. Our initial results of transporting distributed hash table logic from hosts' user space to the fast path of switches in the network data plane are promising. We show that No-hop improves the performance of locating the responsible host and maintains the properties of distributed hash tables while outperforming two baselines. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
Authentication in stealth distributed hash tables
No full textMost existing DHT algorithms assume that all nodes have equal capabilities. This assumption has previously been shown to be untrue in real deployments, where the heterogeneity of nodes can actually have a detrimental effect upon performance. We now acknowledge that nodes on the same overlay may also differ in terms of their trustworthiness. However, implementing and enforcing security policies in a network where all nodes are treated equally is a non-trivial task. We therefore extend our previous work on Stealth DHTs to consider the differentiation of nodes based on their trustworthiness rather than their capabilities alone
A secure key distribution protocol based on hash functions and a quantum-authenticated channel using 6DP (KDP-6DP)
No full textSecurity is the most tedious problem in highly sensitive communications. Quantum security is the key
issue in solving the problem. A key distribution protocol based on the use of hash functions is proposed.
The essential part of the protocol depends on sending a string of random characters from sender to
receiver. Then, a selected hash or a cascade of two hash functions and a long-term shared secret are used
to construct the key. Consequently, the session key is generated on-site by independently applying a hash
function on the random string at the sender and receiver sides. This protocol requires a reliable method of
authentication. Therefore, it is further proposed to use an out-of-band authentication methodology based
on the deterministic six-state quantum authentication protocol that is referred to as 6DP
Integrated-key cryptographic hash functions
No full textCryptographic hash functions have always played a major role in most cryptographic applications. Traditionally, hash functions were designed in the keyless setting, where a hash function accepts a variable-length message and returns a fixed-length fingerprint. Unfortunately, over the years, significant weaknesses were reported on instances of some popular ``keyless" hash functions. This has motivated the research community to start considering the dedicated-key setting, where a hash function is publicly keyed. In this approach, families of hash functions are constructed such that the individual members are indexed by different publicly-known keys. This has, evidently, also allowed for more rigorous security arguments. However, it turns out that converting an existing keyless hash function into a dedicated-key one is usually non-trivial since the underlying keyless compression function of the keyless hash function does not normally accommodate the extra key input. In this thesis we define and formalise a flexible approach to solve this problem. Hash functions adopting our approach are said to be constructed in the integrated-key setting, where keyless hash functions are seamlessly and transparently transformed into keyed variants by introducing an extra component accompanying the (still keyless) compression function to handle the key input separately outside the compression function. We also propose several integrated-key constructions and prove that they are collision resistant, pre-image resistant, 2nd pre-image resistant, indifferentiable from Random Oracle (RO), indistinguishable from Pseudorandom Functions (PRFs) and Unforgeable when instantiated as Message Authentication Codes (MACs) in the private key setting. We further prove that hash functions constructed in the integrated-key setting are indistinguishable from their variants in the conventional dedicated-key setting, which implies that proofs from the dedicated-key setting can be naturally reduced to the integrated-key setting.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
An Empirical Performance Comparison between Matrix Multiplication Join and Hash Join on GPUs
No full textRecent advances in Graphic Processing Units (GPUs) have facilitated a significant performance boost for database operators, in particular, joins. It has been intensively studied how conventional join implementations, such as hash joins, benefit from the massive parallelism of GPUs. With the proliferation of machine learning, more databases have started to provide native support for the basic building blocks of ML algorithms, i.e., linear algebra operators such as matrix multiplication (MM). Despite the recent increasing interest in processing relational joins using matrix multiplication (MM-join), two crucial questions still remain open: i) how efficient are current MM-join implementations compared to the GPU-based join algorithms; ii) how should practitioners choose among MM-join and conventional GPU-based joins given different data characteristics.In this paper, we compare the execution time, and memory I/O of MM-join against multiple GPU hash joins. An empirical analysis of our experimental results reveals that the state-of-the-art hash join implementation shows substantial scalability for various data characteristics. In contrast, MM-join outperforms the SOTA hash join in low join selectivity and low table cardinality but shows unsatisfactory scalability due to synchronous data movement and computation.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Web Information System
Nomer Corpus of Taxonomic Resources hash://sha256/12051b8aa59930d6561a3ed46b7cf3f67a31a98445a457d78894f6b8a8e81641 hash://md5/1ff6b3628d7afc15b882cc0c9b1c3815
No full textThis publication contains a Preston archive of resources used by Nomer, a biodiversity name and term translator.
This archive contains specific (repackaged) versions of:
NCBI Taxonomy [1,2], ITIS Taxonomy [3], GBIF Backbone Taxonomy [4,5], Index Fungorum [6], Plazi Treatment Bank [7], the Catalogue of Life [8], the Open Tree of Life Reference Taxonomy [9], the World of Flora Online [10], the Foundational Taxonomic Resources For The Terrestrial Parasite Tracker (TPT) Project [11], Paleobiology Database [12], Mammal Diversity Database [13], and Discover Life bee species guide and world checklist [14].
Please follow academic citation guidelines when using this corpus.
To clone this archive:
preston clone\
--anchor hash://sha256/12051b8aa59930d6561a3ed46b7cf3f67a31a98445a457d78894f6b8a8e81641\
--remote https://zenodo.org/record/8326175/files/,https://zenodo.org/record/8327611/files/\
https://zenodo.org/record/8326175/files/
After cloning this archive, you should be able to reproduce results below without the --remote https://zenodo.org... part.
This publication has history:
preston history\
--anchor hash://sha256/12051b8aa59930d6561a3ed46b7cf3f67a31a98445a457d78894f6b8a8e81641\
--remote https://zenodo.org/record/8326175/files/,https://zenodo.org/record/8327611/files/
producing the following provenance graph -
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
This publication contains versions for the following (internet) content aliases (aka URLs, URIs, URNs):
preston alias\
-l tsv\
--anchor hash://sha256/12051b8aa59930d6561a3ed46b7cf3f67a31a98445a457d78894f6b8a8e81641\
--remote https://zenodo.org/record/8326175/files/,https://zenodo.org/record/8327611/files/\
| cut -f1\
| sort\
| uniq
col:NameUsage.tsv
col:NameUsage.tsv.gz
http://104.198.143.165/files/WFO_Backbone/_WFOCompleteBackbone/WFO_Backbone.zip
https://download.catalogueoflife.org/col/latest_coldp.zip
https://files.opentreeoflife.org/ott/ott3.3/ott3.3/taxonomy.tsv
https://files.opentreeoflife.org/ott/ott3.4/ott3.4.tgz
https://files.worldfloraonline.org/Files/WFO_Backbone/_WFOCompleteBackbone/WFO_Backbone.zip
https://ftp.ncbi.nlm.nih.gov/pub/pmc/PMC-ids.csv.gz
https://ftp.ncbi.nlm.nih.gov/pub/taxonomy/taxdump.tar.gz
https://github.com/bio-guoda/preston/releases/download/0.3.9/preston.jar
https://github.com/bio-guoda/preston/releases/download/0.4.4/preston.jar
https://github.com/globalbioticinteractions/globi-taxon-names/raw/main/non-taxon-words.txt
https://github.com/globalbioticinteractions/globi-taxon-names/raw/main/taxon-name-mapping.csv
https://github.com/globalbioticinteractions/nomer/releases/download/0.2.5/nomer.jar
https://github.com/mammaldiversity/mammaldiversity.github.io/raw/master/_data/mdd.csv
https://github.com/plazi/treatments-rdf/archive/master.zip
https://paleobiodb.org/data1.2/refs/list.tsv?all_records
https://paleobiodb.org/data1.2/taxa/list.tsv?all_records
https://query.wikidata.org/sparql?format=json&query=PREFIX%20rdfs:%20%3Chttp://www.w3.org/2000/01/rdf-schema%23%3E%0APREFIX%20bd:%20%3Chttp://www.bigdata.com/rdf%23%3E%0APREFIX%20wd:%20%3Chttp://www.wikidata.org/entity/%3E%0APREFIX%20wikibase:%20%3Chttp://wikiba.se/ontology%23%3E%0APREFIX%20wdt:%20%3Chttp://www.wikidata.org/prop/direct/%3E%0ASELECT%20?i%20?l%20WHERE%20%7B%0A%20%20?i%20wdt:P31%20wd:Q427626.%0A%20%20?i%20rdfs:label%20?l%0A%7D
https://raw.githubusercontent.com/jhpoelen/zenodo-upload/master/zenodo_upload.sh
https://raw.githubusercontent.com/njdowdy/tpt-taxonomy/main/Acari/Acari-standardized-v2.csv
https://raw.githubusercontent.com/njdowdy/tpt-taxonomy/main/host_files/Aves-standardized-v2.csv
https://raw.githubusercontent.com/njdowdy/tpt-taxonomy/main/host_files/Mammalia-standardized-v2.csv
https://raw.githubusercontent.com/njdowdy/tpt-taxonomy/main/Ixodida/Ixodida-standardized-v2.csv
https://raw.githubusercontent.com/njdowdy/tpt-taxonomy/main/Phthiraptera/Phthiraptera-standardized-v2.csv
https://raw.githubusercontent.com/njdowdy/tpt-taxonomy/main/Siphonaptera/Siphonaptera-standardized-v2.csv
https://uofi.box.com/shared/static/54l3b7h4q4pwqq4fgqvx42h3d328fl1c.csv
https://www.discoverlife.org/mp/20q/?act=x_checklist
https://www.discoverlife.org/mp/20q/?act=x_checklist&guide=Apoidea_species&flags=HAS
https://www.itis.gov/downloads/itisMSSql.zip
https://www.nodc.noaa.gov/cgi-bin/OAS/prd/download/50418.1.1.tar.gz
https://zenodo.org/record/3833105/files/synonym_links.gz
https://zenodo.org/record/3833105/files/taxonomic_units.gz
https://zenodo.org/record/3833105/files/taxon_unit_types.gz
https://zenodo.org/record/3834881/files/taxon.tab.gz
https://zenodo.org/record/5222044/files/gbif-backbone-by-id.tsv.gz
https://zenodo.org/record/5222044/files/gbif-backbone-by-name.tsv.gz
https://zenodo.org/record/5526782/files/taxonCache.tsv.gz
https://zenodo.org/record/5526782/files/taxonMap.tsv.gz
https://zenodo.org/record/5639794/files
https://zenodo.org/record/5719410/files/taxonCache.tsv.gz
https://zenodo.org/record/5719410/files/taxonMap.tsv.gz
https://zenodo.org/record/6127573/files
https://zenodo.org/record/6394935/files/taxonCache.tsv.gz
https://zenodo.org/record/6394935/files/taxonMap.tsv.gz
https://zenodo.org/record/6473194/files
https://zenodo.org/record/6707049/files/gbif-backbone-by-id.tsv.gz
https://zenodo.org/record/6707049/files/gbif-backbone-by-name.tsv.gz
https://zenodo.org/record/7405292/files/gbif-backbone-by-id.tsv.gz
https://zenodo.org/record/7405292/files/gbif-backbone-by-name.tsv.gz
https://zenodo.org/record/7761832/files/taxonCache.tsv.gz
https://zenodo.org/record/7761832/files/taxonMap.tsv.gz
urn:example:reverse-sort.sh
urn:uuid:964538e0-73f3-4091-a5f4-66b3a41bb814
urn:uuid:d5675cd5-3edc-4dd0-8713-907cd5f910e3
References
[1] Schoch CL, et al. NCBI Taxonomy: a comprehensive update on curation, resources and tools. Database (Oxford). 2020: baaa062. doi: 10.1093/database/baaa062
[2] Sayers EW, et al. GenBank. Nucleic Acids Res. 2019. 47(D1):D94-D99. doi: 10.1093/nar/gky989.
[3] Integrated Taxonomic Information System (ITIS), www.itis.gov, doi: 10.5066/F7KH0KBK
[4] Simplified GBIF Backbone Taxonomy. Accessed at https://hosted-datasets.gbif.org/datasets/backbone/ on 2021-08-18.
[5] GBIF Secretariat (2021). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2021-08-18.
[6] Index Fungorum: Species Fungorum (2021). http://www.speciesfungorum.org
[7] Plazi Treatment Bank (2021). https://github.com/plazi/treatments-rdf/ http://plazi.org/ .
[8] Bánki, O., Roskov, Y., Döring, M., Ower, G., Vandepitte, L., Hobern, D., Remsen, D., Schalk, P., DeWalt, R. E., Keping, M., Miller, J., Orrell, T., Aalbu, R., Adlard, R., Adriaenssens, E., Aedo, C., Aescht, E., Akkari, N., Alonso-Zarazaga, M. A., et al. (2022). Catalogue of Life Checklist (Version 2022-01-14). Catalogue of Life. https://doi.org/10.48580/d4tp
[9] OpenTree et al. 2022. "Open Tree of Life Taxonomy." Accessed on 2022-11-21 at https://files.opentreeoflife.org/ott/ott3.4/ .
[10] WFO (2022): World Flora Online. Published on the Internet; http://www.worldfloraonline.org. Accessed on: 09 Sep 2022
[11] Dr. Nicolas J. Dowdy, Dr. Erika M. Tucker, Jorrit Poelen, Dr. Vijay Barve, Teresa Mayfield-Meyer, Kathryn Sullivan, & Dr. Jennifer M. Zaspel. (2022). njdowdy/tpt-taxonomy: TPT Taxonomic Resource v2.0.0 (v2.0.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7215550 https://github.com/njdowdy/tpt-taxonomy/tree/d820e7e036483b48906deb5f3a62fc089f10d9e8
[12] The data were downloaded from the Paleobiology Database on 26 January, 2023
[13] Mammal Diversity Database. (2022). Mammal Diversity Database (1.10) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.7394529
[14] Ascher, J. S. and J. Pickering. 2022. Discover Life bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila). http://www.discoverlife.org/mp/20q?guide=Apoidea_species
وكان الكون رماديا : قصص مختارة من العالم العربي
No full textUrval: Henry Diab; översättning från arabiska: Henry Diab, Kerstin Johansson, Helen Avery. Urvalet omfattar 'En handfull dadlar' från 1964 av Tayeb Salih från Sudan; 'Hon var inte medveten om det' av saudiska Zainab Hifni; 'Damrummet' av Hana Atiyye från Egypten; 'Främling i sitt eget land' av Fawzia Ashmawi från Egypten; 'En kopp te hos Mrs. Robinson' av Ghalia Kabbani från Syrien; 'Siestan' av Salwa El-Naimi från Syrien; 'Den lytte och den lättfotade' av Mohamed Zefzaf från Marocko; 'En gammal kvinnas huvudbry' av Mahdi Isa al-Saqr från Irak; 'Spegelbilden' av Ibtisam Abdallah från Irak; 'Hos mig varje dag' av Abd al-Sattar Nasir från Irak; 'Zahra kommer till kvarteret' av Laila Al-Othman från Kuwait och 'Mor, vad är det här för en nyckel?' av Samira Azzam från Palestina
- …
