National Repository of Grey Literature 7 records found  Search took 0.01 seconds. 
Data quality and consistency in Scopus and Web of Science in their indexing of Czech Journals
Mika, Pavel ; Szarzec, Jakub ; Sivertsen, Gunnar
This study addresses the discussion of “quality versus coverage” that often arises if a choice is needed between Scopus and Web of Science (WoS). We present a new methodology to detect problems in the quality of indexing procedures. Our preliminary findings indicate the same degree and types of errors in Scopus and WoS. The more serious errors seem to occur in the indexing of cited references, not in the recording of traditional metadata.
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Application of cryptography in information systems
Mika, Pavel ; Ivánek, Jiří (advisor) ; Dvořák, Jan (referee)
(in English): This thesis describes and compares the most popular algorithms used in information systems. Specifically, there are: Vernam cipher, DES, 3DES, AES, and Blowfish (symmetric cryptography) and Diffie-Hellman key exchange, RSA, ElGamal, McEliece and systems based on elliptic curves (asymmetric cryptography). The thesis deals with the areas of information security, in particular the various security mechanisms (confidentiality, availability, integrity, authentication, authorization and non-repudiation), which are secured by using cryptography. There is also mentioned the theme of standardization, where the responsible institutions and some standards are presented. Described algorithms are compared using several criteria (time, throughput, memory needed for implementation, avalanche effect and key lengths) in the final chapter. Data used for comparison are taken from other studies and scientific materials.
Comparative analysis of technology for development web applications
Kryl, Milan ; Míka, Pavel (advisor) ; Galamboš, Leo (referee)
Nazev prace: Srovnavacia nalyza tcchnologii vyvoje webovych aplikaci Autor: Milan Kryl Katedra (ustav): Kaledra softwaroveho inzenyrstvi Vedouci diplomove prace: Mgr.P avel Mika e-mail vedouciho: Pavel MJka@in ff.cuni.cz Abstrakt: Diplomova prace podrobne seznamujc s fungovanfm technologii pro tvorbu internetovych aplikaci. Jcdnotlive technologic CGI, FastCGI, Perl, Python, ASP, ASP.NET, Java servlet, JSP, Cocoon a PUP jsou rozebirany z bczpecnostniho hlediska. Zminovany jsou funkcc podporujici zabezpeceni' kazdc technologic pfi instalaci technologic na server a take behem vyvoje. Durazjc kladen i na mnozstvi zvefejnovanych bezpecnostnich incidentuj ejich cetnost a vyvoj od vzniku technologic a jejich typ. Prace rozebi'ra take vykonnostni srovnani jednotlivych aplikaci za pomoci tfi testovacich programu (Apache Benchmark, httperf, lest_ client). Vzorek testovacich souboru je zatezove testovan jednim az nekolika desitkami simulovanych klientu. Testovani jc provadeno lokalne pfimo na serveru i vzdalene za pomoci dalsiho pocitace pripojcneho pfcs sit'. Nakoncc jsou nastineny moznosti dalsiho vykonnostniho rozsireni a zmineno nckolik doporuceni pro lepsi dostupnost cele internetove aplikace. Pfiblizeny jsou systemy s vysokou dostupnostia take fungovani internetovych aplikaci pro cclosvctove pouziti. Klicova...
Possible Pitfalls of Quantitative Metrics
Mika, Pavel
This post presents critical view on practical use of bibliometric methods. There are listed difficulties and limitation which cause lower value of information got by metrics and which increase a risk of misinterpretation. Discussion about possible solution is provided and general recommendation is suggested for accurate use of bibliometry. There is also described issue of research area scheming which is necessary for objective use if citation indicators. But which schema use and how does this influence the results could be quite difficult question. Bibliometric indicators itself include quite wide range of circumstances, which are important to take into consideration (e. g. size dependent and independent indicators, average distortion, minimum threshold of documents). Use of whole or fractional counting could be an interesting question.\n
Experience with Using EIR for Research Evaluation
Mika, Pavel
This post introduces basic applications of electronic information resources for research evaluation in terms of bibliometrics, ie quantitative methods of data analysis. Current research information systems (CRIS) and commercial citation databases contain information useful for evaluating individual scientists, scientific institutions and organizations, but also the entire scientific disciplines or regions in the global comparison. Information obtained by the analysis of stored data – bibliographic records or citation relationships between them can say something about the evaluated unit rated in terms of numbers of scientific impact and partly quality (measured by citation rate) of various kinds of scientific results and their share in domestic or global production. The most interesting information can be provided by citation data. It is also possible to focus on research field or current topics by keywords analysis. We can get a view on international network of scientists by analyzing the author's coope­ration.

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4 Mika, Petr
4 Míka, Petr
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