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Tytuł:
Cyberbezpieczeństwo w kryminalistyce
Autorzy:
Borkowski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/20311659.pdf
Data publikacji:
2023-10-31
Wydawca:
Akademia Sztuki Wojennej
Tematy:
cybercrime
cybersecurity
forensics
database systems
firewall
Opis:
It is common to use terms like cybercrime and cybersecurity interchangeably. The distinction between the subject scope of both terms in the case of forensic science clearly indicates the direction of the tasks carried out in the areas of tactics and technology. In contrast to cybersecurity, the preventive function of forensic science is to create solutions that strengthen the resistance of information systems to actions that violate the confidentiality, integrity, accessibility, and authenticity of processed data or related services offered by these systems. Ensuring such resilience should be perceived in the context of the activities of entities performing public tasks with the use of cooperating IT devices and software by processing, storing, sending, and receiving data via telecommunications networks using a terminal device appropriate for a given type of telecommunications network.
Źródło:
Cybersecurity and Law; 2023, 10, 2; 167-182
2658-1493
Pojawia się w:
Cybersecurity and Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Description of Ternary Fe-B-X Systems. Part 8: Fe-B-Mo, with Extension to Quaternary Fe-B-Cr-Mo System
Autorzy:
Miettinen, Jyrki
Visuri, Ville-Valtteri
Fabritius, Timo
Powiązania:
https://bibliotekanauki.pl/articles/2049544.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phase diagrams
thermodynamic modeling
thermodynamic database
Fe-based systems
Fe-B-X systems
Fe-B-Mo system
Fe-B-Cr-Mo system
Opis:
Thermodynamic optimizations of the ternary Fe-B-Mo system and its binary sub-system B-Mo are presented. The Fe-B-Mo description is then extended to the quaternary Fe-B-Cr-Mo system by assessing the ternary B-Cr-Mo system. The thermodynamic descriptions of the other binaries (Fe-B, Fe-Cr, Fe-Mo, B-Cr, and Cr-Mo) and the other ternaries (Fe-B-Cr and Fe-Cr-Mo) are taken from earlier studies. In this study, the adjustable parameters of the B-Mo, Fe-B-Mo, and B-Cr-Mo systems were optimized using the experimental thermodynamic and the phase equilibrium data from the literature. The solution phases of the system (liquid, bcc and fcc) are described with the substitutional solution model, and most borides are treated as stoichiometric phases or semistoichiometric phases, using a simple two-sublattice model for the latter. The system’s intermetallic phases, Chi, Mu, R, and Sigma (not dissolving boron) as well as boride M3B2, based on a formulation of (Cr,Fe)(Cr,Fe,Mo)2(B)2, are described with a three-sublattice model. Reasonable agreement is obtained between the calculated and measured phase equilibria in all four systems: B-Mo; Fe-B-Mo; B-Cr-Mo; and Fe-B-Cr-Mo.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 1; 281-295
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Description of Ternary Fe-B-X Systems. Part 9: Fe-B-Cu
Autorzy:
Miettinen, Jyrki
Visuri, Ville-Valtteri
Fabritius, Timo
Powiązania:
https://bibliotekanauki.pl/articles/2049545.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phase diagrams
thermodynamic modelling
thermodynamic database
Fe-based systems
Fe-B-X systems
Fe-B-Cu system
Opis:
Thermodynamic descriptions of the ternary Fe-B-Cu system and its binary sub-system B-Cu aredeveloped in the context of a new Fe-B-X (X = Cr, Cu, Mn, Mo, Ni, Si, Ti, V, C) database. The thermodynamic parameters of the other binary sub-systems (Fe-B and Fe-Cu) are taken from earlier assessments. Experimental thermodynamic and phase equilibrium data available in the literature have been used for the optimization of the Fe-B-Cu and B-Cu systems’ thermodynamic parameters. The solution phases are described using a substitutional solution model and the compounds (two borides of the Fe-B system) are treated as stoichiometric phases. A good agreement was obtained between the calculated and the experimental thermodynamic and phase equilibrium data.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 1; 297-304
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Attempt to Use Google Earth Pro Images for Selected Geodetic Works − for Example of Wolności Square in Poznań (Poland)
Autorzy:
Kubiak, Jarosław
Magda, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/43347428.pdf
Data publikacji:
2020-12-15
Wydawca:
Poznańskie Towarzystwo Przyjaciół Nauk
Tematy:
Global Navigation Satellite Systems
Google Earth Pro maps
Topographic Objects Database
topographic descriptions
satellite measurement
Opis:
The article concerns issues pertaining to satellite geodesy and the possibilities of using the available source materials such as high-resolution satellite maps for selected works which require a high degree of accuracy in determining the location of topographic objects. The purpose of the work was to indicate the potential use of Google Earth maps for selected geodetic works (preparing topographic descriptions, sketch maps) in order to facilitate and accelerate the process. Works were carried out in an urban area, Wolności Square in Poznań (Poland) where 58 checkpoints were located. In order to design them, maps from the Google system from four periods were used. The research used the Global Navigation Satellite Systems set consisting of a Leica GS08 + satellite receiver and a Leica CS15 controller, geodetic software for work design (Trimble GNSS Planning Online) and calculations (C-Geo 8) as well as cartographic materials and data obtained from the Municipal Center of Geodetic and Cartographic Documentation in Poznań: the master map, catalog data and topographic descriptions of the reference points. The results show that the accuracy of the location of points offered by Google is greater than declared by the system operators. However, it is not sufficient for applications in the assumed geodetic works.
Źródło:
Badania Fizjograficzne Seria A - Geografia Fizyczna; 2020, 11 (71); 65-74
2081-6014
Pojawia się w:
Badania Fizjograficzne Seria A - Geografia Fizyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elaboration of an expert system for sizing, designing and verifying flexible pavements
Autorzy:
Bouacha, Nadjet
Belachia, Mouloud
Powiązania:
https://bibliotekanauki.pl/articles/396716.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
expert systems
sizing
flexible pavement
database
constraints
displacements
systemy eksperckie
dobór
elestyczna nawierzchnia
baza danych
ograniczenia
przemieszczenia
Opis:
The use of expert systems in the world of civil engineering, and in particular for roads, has become a necessity for the reason of the particularity, complexity, and diversity of the influencing parameters at the level of the design calculation, the latter of which represents the major source of subsequent degradation. This system consists of proposing a tool for helping the user firstly to size the body of the roadway, with several analytical methods and models (Pre-project, Boussinesq, Westgaard, and Burmister), and secondly, to offer different design possibilities (thickness and type of the material) that make up the layers. Lastly, it is to calculate the stresses and strains in order to compare them with admissible limits. The management of a knowledge base of complex natures (words, sentences, numbers, symbols, tables, calculation methods, equations, conditions, etc.) requires an adequate methodology which goes beyond the simple use of the technology but enables you to imagine the process of regrouping this mass of complex data and classifying the data, which can then be integrated into a database or spreadsheets and external programs designed with code compatible with the expert system generator. Our contribution relates initially to the formulation, organization, and preparation of the algorithms, and then the starting of the programs in order to conceive fully executable programs, the latter of which we can call the expert system. The validation of such a system was made as the work progressed, changes were made in the formulation of the rules, and the order and orientation of the data in the knowledge that the advantage of this type of system is the possibility of permanently reinforcing the database with human expertise in the field, or in books, especially so that we can avoid data loss due to illnesses, retirement, etc.
Źródło:
Civil and Environmental Engineering Reports; 2020, 30, 3; 94-121
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Description of Ternary Fe-B-X Systems. Part 7: Fe-B-C
Autorzy:
Miettinen, J.
Visuri, V.-V.
Fabritius, T.
Vassilev, G.
Powiązania:
https://bibliotekanauki.pl/articles/352609.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phase diagrams
thermodynamic modelling
thermodynamic database
Fe-B-X systems
Fe-B-C system
Opis:
Thermodynamic description of the Fe-B-C system in its iron-rich corner is developed in the context of a new Fe-B-X (X = Cr, Ni, Mn, Si, Ti, V, C) database. The thermodynamic parameters of the binary sub-systems, Fe-B, Fe-C and B-C, are taken from earlier assessments modifying the B-C description. The parameters of the Fe-B-C system are optimized in this study using experimental thermodynamic and phase equilibrium data from the literature. Liquid, beta-rhombo-B and graphite phases are described using the substitutional solution model, while the ferrite (bcc), the austenite (fcc), the cementite (M3C) and the M23C6 phases are described with the sublattice model and the borides, Fe2B, FeB and B4C, are treated as stoichiometric phases. A good correlation was obtained between the calculated and the experimental thermodynamic and phase equilibrium data. The description is recommended to be used at the composition region of wt% C + wt% B < 15 and at temperatures below 2700°C.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 2; 923-933
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Цифрові довідкові ресурси сучасного літературознавства
Digital information resources of the modern literary studies
Autorzy:
Демська-Будзуляк, Леся
Powiązania:
https://bibliotekanauki.pl/articles/1196486.pdf
Data publikacji:
2020
Wydawca:
National Academy of Sciences of Ukraine. Institute of Encyclopedic Research
Tematy:
цифрова гуманітаристика, електронна ресурс-бібліотека
мультимедійна електронна система
мультимедійна енциклопедична база українська літературна енциклопедія
digital Humanities
digital library resources
multimedia systems
multimedia encyclopedic database
Ukrainian Literary Encyclopedia
Opis:
This article discusses the characteristics of various reference digital resources of the modern humanities. We have identified three main digital resources: a digital library resource, a multimedia digital system, and a multimedia encyclopedic database. These important resources are involved in creating a modern information society. In this context, the Ukrainian Literary Encyclopedia of the Shevchenko Institute of Literature of the National Academy of Sciences of Ukraine and the creation of an independent multimedia encyclopedic database are considered.
У статті схарактеризовано різні типи цифрових довідникових ресурсів, що ними послуговується сучасна гуманітаристика, зокрема літературознавство. Виділено три основні з них, зокрема електронну ресурс-бібліотеку, мультимедійну електронну систему й мультимедійну енциклопедичну базу. З’ясовано важливість довідникових електронних ресурсів у процесах формування сучасного інформаційного суспільства. Окрему увагу звернено на проект видання «Української літературної енциклопедії» Інституту літератури імені Т. Г. Шевченка НАН України та необхідність створення окремої мультимедійної енциклопедичної бази літературної енциклопедії України.
Źródło:
Енциклопедичний вісник України; 2020, 12
2706-9990
2707-000X
Pojawia się w:
Енциклопедичний вісник України
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of selected database models in management information systems
Autorzy:
Szczepaniuk, Edyta
Szczepaniuk, Hubert
Powiązania:
https://bibliotekanauki.pl/articles/949791.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
effectiveness of databases
Management Information Systems
NoSQL database
skuteczność baz danych
Systemy Zarządzania Informacją
baza danych NoSQL
Opis:
In this paper, the authors attempt to identify the universal factors of the effectiveness of selected database models used in Management Information Systems. Selection of an appropriate database model at the stage of design and implementation directly determines the effectiveness of the Management Information Systems within an organisation. The relational database model and database models based on NoSQL paradigms, including in particular graph databases and document-oriented databases, will be evaluated. NoSQL-class database models demonstrate properties in terms of effective application for business purposes.
Źródło:
Organizacja i Zarządzanie : kwartalnik naukowy; 2019, 1; 77-85
1899-6116
Pojawia się w:
Organizacja i Zarządzanie : kwartalnik naukowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on Effectiveness of Using Column-Oriented Databases in the Processing of Measurement Characteristics of an Electric Vehicle
Autorzy:
Czerepicki, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/223980.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric vehicle
measurement characteristics
IT transport systems
NoSQL database
pojazd elektryczny
charakterystyki pomiarowe
system transportu IT
baza danych NoSQL
Opis:
Electric vehicles are increasingly popular means of transport. One of the most important problems of their operation is to optimize the use of a battery pack. It requires to analyze the operational characteristics of a vehicle in motion, which are stored in a database. If the measurement data are collected from many vehicles, the efficiency of their analysis is important. The objective of this article is to study the possibilities of using modern column-oriented databases in order to increase the efficiency of the analysis of selected operational characteristics of an electric vehicle. The research problem is a comparative analysis of the processing efficiency of selected measurement characteristics of an electric vehicle in relational and column-oriented data structures. Important analytical functions were formulated and recorded in the form of database queries. An experiment consisting in multiple execution of functions packages on various database structures, including a column-oriented one, was carried out. The execution time of packages and the IT system load were collected and analyzed. The analysis of the experiment results allows to conclude that the use of the column-oriented data structures made it possible to shorten the time of executing the functions analyzing the energy consumption by the electric vehicle’s drive system. Depending on the type of the analyzed characteristics of the vehicle and its method of representation in the database, a significant reduction of the analysis time compared to the relational structure was obtained. Also, a decrease in the load on the computer system during data processing on the column-oriented structures was noted. The use of the column-oriented databases in the processing and analysis of measurement operational characteristics of electric vehicles is justified and it can bring measurable effects. It should be considered that the effectiveness of solving depends on the number of the analyzed characteristics and the format of their representation in the computer.
Źródło:
Archives of Transport; 2019, 51, 3; 77-84
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Description of Ternary Fe-B-X Systems. Part 4: Fe-B-V
Autorzy:
Miettinen, J.
Visuri, V.-V.
Fabritius, T.
Milcheva, N.
Vassilev, G.
Powiązania:
https://bibliotekanauki.pl/articles/355188.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phase diagrams
thermodynamic modelling
Fe-based systems
Fe-B-X systems thermodynamic database
Fe-B-V system
Opis:
Thermodynamic descriptions of the ternary Fe-B-V system and its binary sub-system B-V, are developed using experimental thermodynamic and phase equilibrium data from the literature. The thermodynamic parameters of the other binaries, Fe-V and Fe-B, are taken from earlier assessments slightly modifying the Fe-V description. The work is in the context of a new Fe-B-X (X = Cr, Ni, Mn, V, Si, Ti, C) database. The solution phases are described using substitutional solution model. The borides are treated as stoichiometric or semistoichiometric phases and described with two-sublattice models.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 2; 451-456
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Description of Ternary Fe-B-X Systems. Part 5: Fe-B-Si
Autorzy:
Miettinen, J.
Visuri, V.-V.
Fabritius, T.
Milcheva, N.
Vassilev, G.
Powiązania:
https://bibliotekanauki.pl/articles/355656.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phase diagrams
thermodynamic modeling
Fe-based systems
Fe-B-X systems thermodynamic database
Fe-B-Si system
Opis:
Thermodynamic descriptions of the ternary Fe-B-Si system and its binary sub-system, B-Si, are developed in the context of a new Fe-B-X (X = Cr, Ni, Mn, V, Si, Ti, C) database. The thermodynamic parameters of the other binary sub-systems, Fe-Si and Fe-B, are taken from earlier assessments. Experimental thermodynamic and phase equilibrium data available in the literature has been used for the optimization of the thermodynamic parameters of the Fe-B-Si and B-Si systems. The solution phases are described using substitutional solution model and the compounds (silicides and borides) are treated as stoichiometric phases. The calculated and experimental thermodynamic and phase equilibrium data were found to be in good agreement.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 4; 1239-1248
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Description of Ternary Fe-B-X Systems. Part 6: Fe-B-Ti
Autorzy:
Miettinen, J.
Visuri, V.-V.
Fabritius, T.
Milcheva, N.
Vassilev, G.
Powiązania:
https://bibliotekanauki.pl/articles/356115.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phase diagrams
thermodynamic modeling
Fe-based systems
Fe-B-X systems thermodynamic database
Fe-B-Ti system
Opis:
Thermodynamic optimizations of the ternary Fe-B-Ti system and its binary sub-system, B-Ti are presented. The thermodynamic descriptions of the other binaries, Fe-Ti and Fe-B, are taken from the earlier studies slightly modifying the Fe-Ti system assessment. The adjustable parameters of the Fe-B-Ti and B-Ti systems are optimized in this study using the experimental thermodynamic and the phase equilibrium data from the literature. The solution phases of the system are described using the substitutional solution model and the compounds (including borides) are treated as stoichiometric phases. The results show a good correlation between the calculated and measured thermodynamic and phase equilibrium data.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 4; 1249-1255
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An efficient approach for view selection for data warehouse using tree mining and evolutionary computation
Autorzy:
Thakare, A.
Deshpande, P.
Powiązania:
https://bibliotekanauki.pl/articles/305413.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
database management systems
data warehousing and data mining
query optimization
graph mining
algorithms for parallel computing
evolutionary computations
genetic algorithms
Opis:
The selection of a proper set of views to materialize plays an important role in database performance. There are many methods of view selection that use different techniques and frameworks to select an efficient set of views for materialization. In this paper, we present a new efficient scalable method for view selection under the given storage constraints using a tree mining approach and evolutionary optimization. The tree mining algorithm is designed to determine the exact frequency of (sub)queries in the historical SQL dataset. The Query Cost model achieves the objective of maximizing the performance benefits from the final view set that is derived from the frequent view set given by the tree mining algorithm. The performance benefit of a query is defined as a function of query frequency, query creation cost, and query maintenance cost. The experimental results show that the proposed method is successful in recommending a solution that is fairly close to an optimal solution.
Źródło:
Computer Science; 2018, 19 (4); 431-455
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance Modeling of Database Systems: a Survey
Autorzy:
Krajewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/309263.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
database systems
NoSQL data stores
performance evaluation
queueing networks
queueing Petri nets
Opis:
This paper presents a systematic survey of the existing database system performance evaluation models based on the queueing theory. The continuous evolution of the methodologies developed is classified according to the mathematical modeling language used. This survey covers formal models – from queueing systems and queueing networks to queueing Petri nets. Some fundamentals of the queueing system theory are presented and queueing system models are classified according to service time distribution. The paper introduces queueing networks and considers several classification criteria applicable to such models. This survey distinguishes methodologies, which evaluate database performance at the integrated system level. Finally, queueing Petri nets are introduced, which combine modeling power of queueing networks and Petri nets. Two performance models within this formalism are investigated. We find that an insufficient amount of research effort is directed into the area of NoSQL data stores. Vast majority of models developed focus on traditional relational models. These models should be adapted to evaluate performance of non-relational data stores.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 4; 37-45
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Appraisal of Abuja Master Plan Using GIS: A Case Study of Abuja Phase I, Federal Capital Territory, Abuja, Nigeria
Autorzy:
Amusa, Idowu Adigun
Ibe, Philip Ongboku
Akolo, Festus Olusanya
Powiązania:
https://bibliotekanauki.pl/articles/1178353.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Abuja
Geographic Information Systems and Database
Master plan
Opis:
The study designed and created a geospatial database for the entities in the study area. The database was subjected to test by issuing single criterion and multiple criteria queries. The single criterion query was issued to test the database on the number of parcels in the study area that are equal to or less than 1500 m2. This is the standard area of a plot when the Abuja Master plan was conceptualized. The query returned 642 parcels out of the 1490 parcels in the study area representing 43.09 percent of the total. The multiple criteria query was issued to show those parcels with more than 25,000 m2 and are developed. The query returned less than 1 percent; that is 11 parcels fall into this category. Buffering was carried out to see the level of compliance of buildings with the 3.0m setback from the fencing walls and the result returned 1725 buildings out of the 3822 buildings within the study area that did not comply with this rule. The parcels were also subjected to a setback of 20m from the river channels in the study area. The rivers were buffered with 20m and overlaid with the parcels. 133 parcels fall within the buffer zone. This is about 8.92 percent of the total parcels in the study area. The implication is that over 90 percent are safe in case there is flooding that spreads around that distance. Graduated colour renderer was used to classify the parcels using the sizes as parameter for the classification.
Źródło:
World Scientific News; 2017, 77, 2; 144-162
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
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