Stream security particularities in Java

Regarding numerous threats connected with sending and storing confidential data, there is a problem of assuring the efficiency. As an answer to those needs, we discuss the SUN's Java Virtual Machine mechanism provided to assure security to a single object. Thanks to the mechanism of serialization in Java, it is possible to provide secure solution. In this paper, we compare the efficiency of algorithms such as DES, Blowfish, AES, RSA and ECC as means of securing serialization of an object

Content Repository in Object Oriented data model

The need for creating content repository stores for e-learning systems grows as the number of available materials increases. Moreover, along with the number of courses, the problem of describing them in a unified form appears. While there are standards used for strict classification of elearning content, the store model still seems to be based on preservative relational databases approach.In this paper we introduce an idea to represent the e-learning content management information in the well organized object-oriented form based on a prospective object-oriented database

Linux based Live CD on optical disks

We present an introduction to LiveCD system remastering based on a prospective UnionFS filesystem

Stream security particularities in Java

Regarding numerous threats connected with sending and storing confidential data, there is a problem of assuring the efficiency. As an answer to those needs, we discuss the SUN's Java Virtual Machine mechanism provided to assure security to a single object. Thanks to the mechanism of serialization in Java, it is possible to provide secure solution. In this paper, we compare the efficiency of algorithms such as DES, Blowfish, AES, RSA and ECC as means of securing serialization of an object

Heterogeneous Indexing Register for Object Database

Even though the object oriented persistent stores has not gained large commercial adaptation rate, it still is an interesting research field in many aspects including the data integration. Persistent data integration is a very challenging goal in modern computer systems. This paper presents a proposal for application of effective indexing integration scheme for distributed and heterogeneous data environment using an object database as the central store

Query Optimization by Indexing in the ODRA OODBMS

We present features and samples of use of the index optimizer module which has been implemented and tested in the ODRA prototype system. The ODRA index implementation is based on linear hashing and works in a scope of a standalone database. The solution is adaptable to distributed environments in order to optimally utilize data grid computational resources. The implementation consists of transparent optimization, automatic index updating and management facilities

Wybór sekwencji docelowej DNA w edycji genów – rzecz o tworzeniu sgRNA

The CRISPR-Cas9 system is being widely used for genome engineering in many different biological applications. As a prokaryotic adaptive immunity system, that was originally adapted from the bacterial Type II CRISPR, CRISPR-Cas9 uses a non-coding RNAs. Those RNAs guides Cas9 nuclease, which in turn induce site-specific DNA cleavage at a specific locations in genome. Such mechanism gives an opportunity to create a programmable method for genome editing. The first step in a CRISPR/Cas9 gene engineering experiment is to design a custom single guide RNA (sgRNA). This paper discusses a possible way of organizing data for designing sgRNA using a fast and general-purpose cluster computing system based on MapReduce paradigm.CRISPR-Cas9 to system powszechnie używany w procesach inżynierii genetycznej. Jako mechanizm adaptacyjnej swoistej odpowiedzi immunologicznej pochodzi pierwotnie z bakterii typu drugiego oraz wykorzystuje niekodujące RNA do modyfikacji DNA. Cas9 to enzym, który działając na DNA i RNA doprowadza do ich rozkładu przez rozerwanie wiązań fosfodiestrowych wewnątrz łańcucha kwasu nukleinowego. Cięcia te dzięki istniejącym mechanizmom zostają automatycznie połączone już bez wyciętego fragmentu. W ten sposób działa programowalne narzędzie do edycji genomu. Pierwszym krokiem przy procesie edycji genomu jest zaprojektowanie pojedynczej nici RNA (single guide RNA – sgRNA) i na tym etapie skupia się niniejsza praca. W pracy postanowiono wykorzystać podejście MapReduce do obliczeń związanych z pierwszym etapem funkcjonowania CRISPR/Cas9. Zaproponowano zoptymalizowany sposób organizacji danych wykorzystywanych do projektowania sgRNA na podstawie systemu przetwarzania rozproszonego opartego na paradygmacie MapReduce