Search results for "python"
showing 10 items of 160 documents
PyCellBase, an efficient python package for easy retrieval of biological data from heterogeneous sources.
2019
Background Biological databases and repositories are incrementing in diversity and complexity over the years. This rapid expansion of current and new sources of biological knowledge raises serious problems of data accessibility and integration. To handle the growing necessity of unification, CellBase was created as an integrative solution. CellBase provides a centralized NoSQL database containing biological information from different and heterogeneous sources. Access to this information is done through a RESTful web service API, which provides an efficient interface to the data. Results In this work we present PyCellBase, a Python package that provides programmatic access to the rich RESTfu…
C/C++ bibliotēku saskarņu izveide Python valodai
2017
Šajā darbā tiek pētīta C/C++ bibliotēku saskarņu veidošana Python valodai. Saskarnes ļauj izmantot C/C++ bibliotēkas kodu no Python. Manuālā saskarņu rakstīšana nav praktiskā dažādu iemeslu dēļ. Daudzas reālas Python bibliotēkas, kuras izveidotas no C/C++ bibliotēkām, izmanto dažādus rīkus – bibliotēkas un koda ģeneratorus, kuri atvieglo saskarņu veidošanu. Tieši šiem rīkiem ir veltīts darbs. Darba mērķis ir salīdzināt pēc iespējas visus aktuālus rīkus. Ievērojama daļa no darba ir, patstāvīgi izveidoti, piemēri saskarņu veidošanai, izvēlētai reālai C un C++ bibliotēkai. Balstoties uz izveidotiem piemēriem, un rīku dokumentāciju ir veikta rīku analīze un salīdzināšana.
Python moduļa izstrāde un integrācija tīmekļa operētājsistēmā webAppOS drošības funkcionalitātes nodrošināšanai
2022
Tīmekļa operētājsistēma webAppOS ir infrastruktūra, kas ietver sevī vairākus tīmekļa procesorus jeb moduļus, kas ļauj vienā tīmekļa lietotnē izsaukt klašu metodes, kas ir realizētas dažādas programmēšanas valodās. Šī darba mērķis ir izveidot Python moduli un ieintegrēt to webAppOS vidē. Modulis dos izstrādātājiem iespēju veidot klašu metodes Python programmēšanas valodā. Moduli ir paredzēts lietot drošības funkcionalitātes nodrošināšanai, tas ir, automātiskai HTTPS komunikācijas protokola sertifikātu ģenerēšanai un sistēmas mapju šifrēšanai. Šiem nolūkiem tiks izmantoti, attiecīgi, RSA un AES algoritmi, kas ļauj sasniegt augstu drošības līmeni, netērējot daudz resursu.
Traffic simulation models calibration using speed–density relationship: An automated procedure based on genetic algorithm
2016
Calibration of traffic models.Calibration as optimization problem.Use of genetic algorithm. This paper presents the first results of a research which applied a genetic algorithm to calibrate a microscopic traffic simulation model based on speed-density relationships. A large set of traffic data collected from the A22 Freeway, Italy, was used and a comparison was performed between the field measurements and the simulation outputs obtained for a test freeway segment by using the Aimsun microscopic simulator.The calibration was formulated as an optimization problem to be solved based on a genetic algorithm; the objective function was defined in order to minimize the differences between the sim…
A Dynamic Attribute-Based Authentication Scheme
2015
Attribute-based authentication (ABA) is an approach to authenticate users by their attributes, so that users can get authenticated anonymously and their privacy can be protected. In ABA schemes, required attributes are represented by attribute trees, which can be combined with signature schemes to construct ABA schemes. Most attribute trees are built from top to down and can not change with attribute requirement changes. In this paper, we propose an ABA scheme based on down-to-top built attribute trees or dynamic attribute trees, which can change when attribute requirements change. Therefore, the proposed dynamic ABA scheme is more efficient in a dynamic environment by avoiding regenerating…
The Algorithm of a Game-Based System in the Relation between an Operator and a Technical Object in Management of E-Commerce Logistics Processes with …
2021
Machine learning (ML) is applied in various logistic processes utilizing innovative techniques (e.g., the use of drones for automated delivery in e-commerce). Early challenges showed the insufficient drones’ steering capacity and cognitive gap related to the lack of theoretical foundation for controlling algorithms. The aim of this paper is to present a game-based algorithm of controlling behaviours in the relation between an operator (OP) and a technical object (TO), based on the assumption that the game is logistics-oriented and the algorithm is to support ML applied in e-commerce optimization management. Algebraic methods, including matrices, Lagrange functions, systems of differential e…
Impact of common property (E.A.) on fixed point theorems in fuzzy metric spaces
2011
We observe that the notion of common property (E.A.) relaxes the required containment of range of one mapping into the range of other which is utilized to construct the sequence of joint iterates. As a consequence, a multitude of recent fixed point theorems of the existing literature are sharpened and enriched.
Automated segmentation and description of the internal morphology of human permanent teeth by means of micro-CT
2020
High-resolution micro-computed tomography is a powerful tool to analyze and visualize the internal morphology of human permanent teeth. It is increasingly used for investigation of epidemiological questions to provide the dentist with the necessary information required for successful endodontic treatment. The aim of the present paper was to propose an image processing method to automate parts of the work needed to fully describe the internal morphology of human permanent teeth. One hundred and four human teeth were scanned on a high-resolution micro-CT scanner using an automatic specimen changer. Python code in a Jupyter notebook was used to verify and process the scans, prepare the dataset…
Model building on the non-factorisable type IIA T6/(Z4×ΩR) orientifold
2016
We construct global semi-realistic supersymmetric models with intersecting D6-branes on the non-factorisable orientifold . The non-factorisable structure gives rise to differences compared to the factorisable case: additional conditions for the three-cycles to be Lagrangian and extra constraints on the wrapping numbers for building fractional cycles.
D.RE.A.M.: A software for uncertainties analysis in retrospective dosimetry
2018
Accidental exposures to ionising radiations are nowadays managed with assistance from biological and physical retrospective dosimetry which are able to provide individual estimates of dose absorbed by victims. The aim of this work is to describe the development of biodosimetry analysis software within the "EURADOS Working Group 10—Retrospective dosimetry" Task group 10.6. Methods The software has been developed in Python code language that is easy to learn, read, use and extensible (it is possible to add new modules). It can implement C/C++/Fortran, Java functions. It is embeddable in applications and is open source. It is extremely portable to Unix/Linux, Windows, Mac operating systems. Th…