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Tytuł:
Process Modelling Based on Event Logs
Autorzy:
Brzychczy, E.
Powiązania:
https://bibliotekanauki.pl/articles/2065023.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
process modelling
process mining
event logs
Petri net
model discovery
Opis:
Process modelling is a very important stage in a Business Process Management cycle enabling process analysis and its redesign. Many sources of information for process modelling purposes exist. It may be an analysis of documentation related directly or indirectly to the process being analysed, observations or participation in the process. Nowadays, for this purpose, it is increasingly proposed to use the event logs from organization’s IT systems. Event logs could be analysed with process mining techniques to create process models expressed by various notations (i.e. Petri Nets, BPMN, EPC). Process mining enables also conformance checking and enhancement analysis of the processes. In the paper issues related to process modelling and process mining are briefly discussed. A case study, an example of delivery process modelling with process mining technique is presented.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 385--392
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical Aspects of Event Logs Creation for Industrial Process Modelling
Autorzy:
Trzcionkowska, A.
Brzychczy, E.
Powiązania:
https://bibliotekanauki.pl/articles/2065010.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
event logs
sensor data
process mining
longwall face
underground mine
Opis:
In the paper we address the challenge of applying process mining techniques for discovering models of underground mining operations based on a sensor data. The paper presents practical approach of creation an event log based on industrial sensors data gathered in an underground mine monitoring systems. The proposed approach enables to generate event logs at different generalization levels based on several numbers of discovered stages of devices performance. For discovering process stages data mining techniques such as exploratory data analysis, clustering and classification have been applied. Created event log has been used in one of the process mining tasks - process model discovery.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 77--83
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitorowanie logów systemowych z wykorzystaniem programu Logcheck
Monitoring system logs using the Logcheck
Autorzy:
WOŁOSZYN, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/455932.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Rzeszowski
Tematy:
Logcheck
logi systemowe
bezpieczeństwo systemu
system logs
security system
Opis:
Artykuł ten opisuje sposób działania, zastosowanie oraz elementy konfiguracji programu Logcheck, który będzie pomocny administratorowi sieci w bieżącym monitorowaniu logów systemowych
This article describes a program Logcheck. Briefly presented the use, installation and the configuration elements. It is a helpful tool for network administrators to assist in the monitoring system logs
Źródło:
Edukacja-Technika-Informatyka; 2013, 4, 2; 431-436
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interpretacja ilościowa profilowań geofizyki otworowej w przypadku niskiej jakości profilowań i ograniczonego zakresu metodycznego pomiarów
Quantitative interpretation of well logs for cases of low quality logs and limited measurement methods
Autorzy:
Czopek, B.
Nowak, J.
Powiązania:
https://bibliotekanauki.pl/articles/184101.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
geofizyka otworowa
niekompletne dane
kalibracja profilowań radiometrycznych
korekta profilowań
petrofizyczna analiza ilościowa
profilowania syntetyczne
well logging
incomlete data
calibration of radiometric logs
well log correction
petrophysical quantitive analysis
synthetic logs
Opis:
W artykule przedstawiono analizę przyczyn najczęściej spotykanych błędów podczas rejestracji i wstępnego opracowania profilowań geofizyki otworowej, zarówno danych archiwalnych uzyskanych przy użyciu sprzętu starszego typu, jak i współczesnych, rejestrowanych sondami firmy Halliburton. Autorzy omawiają sposoby identyfikacji tych błędów oraz możliwości korekty dostosowane do określonych warunków. Prezentują graficzne przykłady błędnych zapisów oraz efekty ich eliminacji. Podają przykłady zastosowania skorygowanych i ujednoliconych profilowań do petrofizycznej analizy ilościowej, obejmującej określenie składu mineralnego, porowatości i zawodnienia. Zdaniem autorów rezultaty tak prowadzonej analizy umożliwiają generację wiarygodnych, syntetycznych (teoretycznych) profilowań gęstości i czasu interwałowego, stanowiących pożądane dane wejściowe przy rozwiązywaniu różnych problemów geologicznych z zakresu poszukiwań, eksploatacji i magazynowania węglowodorów, pozyskiwania źródeł energii geotermalnej i w wielu innych dziedzinach.
This paper presents a causal analysis of the most common errors occurring during recording and preliminary processing of well logs on both archival as well as current data obtained with Halliburton tools. The authors discuss the ways to identify and to correct these errors, under specific conditions. They present graphic examples of recording errors and the effects of their elimination. Examples of applying corrected standardized logs in petrophysical quantitative analysis involving determination of mineral composition, porosity and water saturation are provided by the authors. It is their opinion that the results of such analysis make it possible to generate reliable synthetic (theoretical) logs of density and interval transit time, which are useful input data in solving various geological problems related to hydrocarbon exploration, production and storage, to geothermal energy sources and many other issues.
Źródło:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2011, 37, 4; 517-535
0138-0974
Pojawia się w:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potokowe przetwarzanie danych z dzienników systemowych z wykorzystaniem funkcji generatorów
Pipelined processing of data from system logs using the function generators
Autorzy:
Wołoszyn, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/445992.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rzeszowski
Tematy:
system operacyjny
dzienniki
przetwarzanie potokowe
operating system
logs
pipelining
Opis:
W artykule tym przedstawiono problem wyszukiwania informacji w dziennikach systemowych. Zapisy z dzienników pozwalają na rozwiązanie wielu problemów nieprawidłowego działania systemu, czy wybranej aplikacji. Zastosowana procedura przetwarzania potokowego składa się z kilku etapów i jest bardzo elastyczna. Można ją łatwo zmodyfikować i wykorzystać do innych zastosowań.
This article presents the problem of searching for information in the system log. Records from the logs allow you to solve many problems of a system malfunction. The procedure of processing pipeline consists of several steps and it is very flexible. It can be easily modified and used for other applications.
Źródło:
Dydaktyka informatyki; 2016, (11) 2016; 154-160
2083-3156
Pojawia się w:
Dydaktyka informatyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pojazdy do transportu drewna wielkowymiarowego
Road means of transport timber logs
Autorzy:
Pachuta, A.
Chojnacki, J.
Powiązania:
https://bibliotekanauki.pl/articles/314395.pdf
Data publikacji:
2018
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
efektywność transportu
naczepa kłonicowa
łańcuch dostaw
transport drewna
transport efficiency
semi-trailer
supply chain
timber transport
timber logs
Opis:
W artykule omówiono podstawowe warunki transportu drewna wielkowymiarowego oraz wyposażenie zestawów do przewozu kłód drewnianych. Przedstawiono przegląd rozwiązań konstrukcyjnych naczep i przyczep kłonicowych stosowanych przez wiodących producentów na rynku europejskim. Głównymi kierunkami rozwoju drogowego przewozu drewna jest obniżenie ciężaru własnego środków transportu poprzez zastosowanie lżejszych materiałów konstrukcyjnych oraz zwiększenie możliwości spedycji różnego rodzaju ładunku poprzez regulację elementów nadwozia.
The article discusses the basic conditions for transporting long-wood timber and equipping sets for transporting timber logs. An overview of the structural solutions of trailers and stanchions used by major manufacturers on the European market is presented. The main directions of development of road timber transport is to reduce the own weight of means of transport through the use of lighter construction materials and increase the possibility of carrying various types of cargo by adjusting the trailer elements.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 9; 93-96
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ReMo3D – an open-source Python package for 2D and 3D simulation of normal and lateral resistivity logs
Autorzy:
Wilkosz, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2124700.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
normal and lateral resistivity logs
geophysical forward problem
finite element method
Python
Gmsh
Netgen/NGSolv
Opis:
An open-source Python package is presented, ReMo3D, which allows the generation of synthetic normal and lateral resistivity logs for 2D and 3D models. The package is built around a finite element mesh generator Gmsh and a high-performance multiphysics finite element software Netgen/NGSolve and supports distributed-memory parallel computation. The examples included in the paper show that the developed software can accurately simulate the measurement process and produce detailed synthetic normal and lateral resistivity logs. In addition, basic information about normal and lateral tools such as tool configurations, measurement principles, nomenclature and a brief history of utilization is included in the paper.
Źródło:
Geology, Geophysics and Environment; 2022, 48, 2; 195--211
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Guidelines for recording transport event logs
Autorzy:
Dramski, M.
Powiązania:
https://bibliotekanauki.pl/articles/135068.pdf
Data publikacji:
2018
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
event log
process mining
XES
CSV
data
method
Opis:
A process is an ordered set of related activities taking place in a given time. Processes are present in all branches of the economy, engineering, science, etc. Due to the huge amount of data produced the rapid development of data mining techniques has been observed. Similar methods are also used in the context of processes and are called process mining. The main task of process mining is to create a process model, which is used to reason about the process and to make decisions inside it. The process model may be used to discuss responsibilities, simulations, predictions, etc. The main data structures in process mining are event logs. It is always very important to have correct data which makes creating a reliable process model possible. In this paper the basic guidelines for recording such event logs have been described and conclusions were drawn. The main focus of this research was transport problems.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2018, 53 (125); 102-105
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Access Logs : Underestimated Privacy Risks
Autorzy:
Glet, Michał
Kaczyński, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/227087.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metadata
privacy
cybersecurity
instant messaging
access log
Opis:
Access logs may offer service providers a lot of information about specific users. Depending on the type of the service offers, the operator is capable of obtaining the user’s IP, location, communication habits, device information and so on. In this paper, we analyze a sample instant messenger service that is operating for a certain period of time. In our sandbox, we gathered enough data to correlate user communication habits with their localization, and even contacts. We show how seriously metadata may impact the user’s privacy and make some recommendations about mitigating the quantity of data collected in connection with this type of services.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 3; 405-410
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Results of the comprehensive interpretation of well logs in carbonate and siliciclastic rocks – similarities and differences in the case studies of selected formations
Autorzy:
Waszkiewicz, Sebastian
Alvarez, Ronal Barcala
Jarzyna, Jadwiga
Powiązania:
https://bibliotekanauki.pl/articles/184414.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
comprehensive interpretation of well logs
carbonates
siliciclastic rocks
Cuban oilfield area
Carpathian Foredeep
Opis:
This paper was made using geological and well logging data from the Cuban oilfield area and the Polish Carpathian Foredeep gas deposit to compare the interpretation process and underline similarities and differences between data analysis from two reservoir rocks of different lithology. Data from conventional hydrocarbon deposits, i.e. the Mesozoic Cuban carbonate formation and Miocene shaly-sandy sediments were processed and interpreted using Techlog (Schlumberger Co.) software. Selected approaches were used to determine the step by step volume of shale, total and effective porosity, water/hydrocarbon saturation (Quanti) and for the comprehensive interpretation of well logs (Quanti Elan). Brief characteristics of the carbonate and siliciclastic formations were presented to indicate that the interpretation methodology oriented to the determination of petrophysical properties depends strongly on the type of reservoir. Cross-plots were presented for primary mineral composition recognition, determination of m exponent and resistivity of formation water in the Archie equation. Effective intervals for the carbonate reservoir were calculated according to the Cumulative Hydrocarbon Column methodology. Finally, the results of the interpretation of well logs were presented as continuous curves of mineral composition, including shaliness, porosity and hydrocarbon saturation. The conclusions included recommendations for the effective comprehensive interpretation of well logs in the carbonate and siliciclastic reservoirs.
Źródło:
Geology, Geophysics and Environment; 2019, 45, 3; 163-182
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Creating a knowledge database on system dependability and resilience
Autorzy:
Kubacki, M.
Sosnowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/206779.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
dependability
data mining
event and performance logs
resilience
Opis:
The paper deals with the problem of creating a knowledge database on system dependability and resilience, created on the basis of available system and application logs. Special to ols to collect and analyse these data from many systems have been developed. Taking into account a wide spectrum of various logs we explore them locally and globally. This allowed for identification of characteristics of normal operation and anomalous behaviour. A lot of attention is paid to the problem of selecting measures to identify symptoms characterising system operation and their usefulness in dependability and resilience evaluation or prediction. The concepts presented are illustrated with experience gained during monitoring of real systems.
Źródło:
Control and Cybernetics; 2013, 42, 1; 287-307
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollutant concentrations from two-stage thermal conversion of pine wood logs in a 25 kW boiler with fixed air supply
Autorzy:
Juszczak, M.
Powiązania:
https://bibliotekanauki.pl/articles/52515.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Opis:
A study and further analysis of the two-stage process of burning pine wood logs (gasification and wood gas combustion) in a 25 kW heating boiler were performed. The air stream for combustion was set manually and was constant throughout the given test run. The values of the carbon monoxide, hydrocarbons and nitric oxide in the flue gas were measured. The correlation between the concentration level of these pollutants and the temperature in the wood gas firing nozzle was established, as well as the link between the nitric oxide and carbon monoxide concentrations and the influence of the oxygen concentration in the combustion air on the carbon monoxide emission.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2015, 58, 194
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancing business process event logs with software failure data
Autorzy:
Gruszczyński, K.
Powiązania:
https://bibliotekanauki.pl/articles/411307.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
business process modeling
exceptional process paths
software reliability
failure classification
process mining
Opis:
Process mining techniques allow for the analysis of the real process flow. This flow might be disturbed for many reasons, including software failures. It is also possible for failure occurrence to be the consequence of the faulty process execution. A method for measuring the harmfulness of the software failure regarding business processes executed by the user would be a valuable asset for quality and reliability improvement. In this paper, we take the first step towards developing this method by providing a tool for enhancing XES event logs with failure data. We begin with an introduction to this topic and background analysis in the field of failure classification and process mining techniques supporting failure analysis. Then we present our method for merging operational and failure data. By carrying out a case study based on real data, we evaluate our tool and present the aim of our future work.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2019, 8, 1; 27-32
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ syntetycznych feromonów na zasiedlanie drzew pułapkowych przez rytownika pospolitego Pityogenes chalcographus (L.) (Col.: Scolytidae)
The effect of synthetic pheromones on the infestation of trap logs by Pityogenes chalcographus (L.) (Col.: Scolytidae)
Autorzy:
Grodzki, W.
Powiązania:
https://bibliotekanauki.pl/articles/972998.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zasiedlanie
Pityogenes chalcographus
feromony syntetyczne
drzewa pulapkowe
ochrona lasu
rytownik pospolity
leśnictwo
szkodniki roślin
pityogenes chalcographus
trap logs
pheromones
Norway spruce
Opis:
The classic trap logs are attractive for Pityogenes chalcographus. The infestation density and the length of infested part of stem can be increased by the use of synthetic pheromones of this species. The use of trap logs is generally recommended, but their effectiveness can be enhanced by the use of synthetic pheromones.
Źródło:
Sylwan; 2003, 147, 11; 54-60
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species diversity of plants and fungi on logs of fallen trees of different species in oak-hornbeam forests
Autorzy:
Nowinska, R.
Urbanski, P.
Szewczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/878351.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2009, 13
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithm CFP-SFPwith parallel processing
Autorzy:
Kujawiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/92930.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
association rules
data mining
web logs
a priori
a priori TID
a priori hybrid algorithm
FP-Tree
Opis:
Existing algorithms for finding association rules do not implement parallel processing. This paper proposes CFP-SFP (Creating Frequent Patterns with Set from Frequent Patterns) algorithm with parallel processing. The research involves running CEP-SEP algorithm with one thread and a dozen or so threads that are executed simultaneously. The research was conducted on a computer with one processor and dual-core processor.
Źródło:
Studia Informatica : systems and information technology; 2008, 1(10); 87-93
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie wapna do zabezpieczenia składowanego surowca świerkowego przed zasiedleniem przez owady kambio− i ksylofagiczne
The use of lime for protection of stocked spruce logs against the infestation by cambio- and xylophagous insects
Autorzy:
Grodzki, W.
Srokosz, K.
Latoń, R.
Powiązania:
https://bibliotekanauki.pl/articles/973160.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
ochrona drewna
zasiedlanie
opryski
ksylofagi
kambiofagi
wapno
skuteczność
drewno świerkowe
leśnictwo
dłużyce
spruce logs
bark beetles
timber protection
lime
Opis:
In April 2005, 2 sets by 3 stacks containing Norway spruce logs were exposed in sunny and shaded place within the forest. In each set logs in 2 stacks were sprayed with Ca(OH)2 aquatic dilution with the addition of milk and vegetable oil (1 stack as a whole, and 1 individually – log by log), and 1 left for control. At the end of June 9 insect species infesting the logs were found, among which the most frequent were Hylurgops palliatus (Gyll.) – 41,1% and Pityogenes chalcographus (L.) – 35,6%. The treated logs were less (sometimes – significantly) infested by the most frequently occurring species, but the difference between two variants of treatment was not very high. The logs exposed in sunny place were less infested than those stocked under stand canopy. As this environmentally friendly treatment reduced the infestation of logs by bark beetles (including I. typographus), it can be recommended especially for mountain areas under protection regime.
Źródło:
Sylwan; 2007, 151, 03; 52-58
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of peeler cores for producing beams with hollow cross-section
Autorzy:
Koynov, Daniel
Valyova, Miglena
Powiązania:
https://bibliotekanauki.pl/articles/2201365.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
populus sp
hollow beams
small-diameter logs
veneer
engineered Wood
Opis:
This study presents an opportunity to utilize peeler cores derived from poplar wood for the production of hollow beams. In this way, final products to meet the needs of consumers can be obtained. The proposed novel methods for sawing and gluing the produced materials allow rational application of the waste raw material in the plywood manufacturing. Another advantage in this case is that products with a square cross-section with dimensions close to or corresponding to the standard ones are obtained from small-diameter round wood. The raw material used to receive the proposed hollow beams is up to 33% less than a conventional beam with the same dimensions. The manufactured products are lighter and with a significantly stable cross-sectional shape, compared to natural wood beams with the same dimensions. Sawing the peeler cores and obtaining materials with a triangular and trapezoidal cross-section helps to achieve volume yields from 60.6% to 71.1% of the raw material initial volume.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2022, 65, 210
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application for quantifying the lithology of a rock formation using geophysical well logs and constrained optimization methods
Autorzy:
Barbacki, J.
Powiązania:
https://bibliotekanauki.pl/articles/298713.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
lithology
porosity
water saturation
optimization
LAS
Opis:
Correct determining the lithology of a rock formation is one of the main goals of geophysical interpretation. The application for analysis of borehole geophysical measurements encoded in Log ASCII Standard format files was created. Appropriate choice of geophysical parameters allows to determine the percentage volume of elements in the rock formation, as well as the porosity and the water saturation of the formation. For the precisest solution a conjugate gradient method with Monte Carlo starting points was used.
Źródło:
AGH Drilling, Oil, Gas; 2015, 32, 1; 141-152
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Event log standards in BPM domain
Autorzy:
Gontar, B.
Gontar, Z.
Powiązania:
https://bibliotekanauki.pl/articles/94763.pdf
Data publikacji:
2012
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
process intelligence
automated business process discovery
process mining
event logs standards
podejście procesowe
analiza procesów biznesowych
Opis:
Automated Business Process Discovery (alias Process Intelligence, Process Analysis, Workflow Mining or Process Mining) includes methods, standards and tools to support the discovery and analysis of operational business processes. Paper aims to review ongoing standards for storing and managing event log data, which is starting point for process mining, and verify in what range chosen standards meet the needs of event log analysis. We discuss CWAD, BPAF, PROV-DM, PROV-O, MXML, SA-MXML, and XES formats. Findings of the paper are based on the literature review and analysis of selected software.
Źródło:
Information Systems in Management; 2012, 1, 4; 293-304
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Keeping track of scientific dives in countries with incipient diving programmes: the SciDive record forms
Autorzy:
Moreno, Bernabé
Powiązania:
https://bibliotekanauki.pl/articles/2083490.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
Tematy:
scientific diving
dive logs
hyperbaric conditions
risk assessment
good operating practices
Opis:
Pre-dive checks and dive logs are fundamental documentation for any diving operation and must be incorporated as mandatory ‘good operating practices’ in scientific diving (SD) projects. Data included in dive logs may vary in detail, however, there is basic information to provide based on global standards. Differently to several developed countries in Europe, North America and Australasia, there are countries with incipient, sometimes non-regulated, SD programmes. In this article the importance of documentation in SD is highlighted and record forms are provided as templates, including versions both in English and Spanish. The Diving Supervisor (DS) is the designated person to fill the ‘Daily SciDive Log’ and ‘SCUBA & surface-supplied LogSheet’ (Table 1, 2 and 3, respectively), whilst every diver is responsible for filing their own ‘SciDiver’s Digital LogBook’ (Table 4). General and specific considerations for all tables are described throughout the text. This effort was done to facilitate systematic data management and start developing the bases towards solid national/regional standards on scientific diving operations, particularly for those countries with incipient (scientific) diving programmes.
Źródło:
Polish Hyperbaric Research; 2020, 3(72); 29-38
1734-7009
2084-0535
Pojawia się w:
Polish Hyperbaric Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discovering and optimising processes from event logs of document management systems
Autorzy:
Mędrek, M.
Wiechetek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/392920.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
workflow
process mapping
process discovering
BPD
BPMN
przepływ pracy
proces mapowania
wykrywanie procesu
Opis:
Modern information management systems are often driven by workflow engines, which require an accurate, detailed, and structured process description. Instead of theoretical modelling of such processes we propose a technique which can be a connection between traditional management (organisational structure) and business process management approach. In our work we present a case study where the automatic process mining techniques are applied to administrative processes in an environment of event logs recorded by DMS. We use event log data to discover and describe the process map of the organisation and to model structured process descriptions. Our approach allows for the extraction of models based on facts and it is a direct connection between the process model and raw data generated by the organisation. Such scenario increases consistency between the mapped model and the reality of the organisation.
Źródło:
Organizacja i Zarządzanie : kwartalnik naukowy; 2017, 3; 69-82
1899-6116
Pojawia się w:
Organizacja i Zarządzanie : kwartalnik naukowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwości ręcznego przemieszczania surowca krótkiego podczas pozyskania sosny, świerka, brzozy i buka w cięciach pielęgnacyjnych
Capabilities of manhandling small logs in commercial thinning in pine, spruce, beech, and birch stands
Autorzy:
Tomczak, A.
Grzywiński, W.
Jelonek, T.
Powiązania:
https://bibliotekanauki.pl/articles/986671.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany
ciecia pielegnacyjne
sosna
swierk
brzoza
buk
pozyskiwanie drewna
drewno krotkie
drewno sredniowymiarowe
masa drewna
reczne przemieszczanie surowca drzewnego
przemieszczanie ciezarow
health
musculoskeletal symptoms
loggers
weight of logs
green density
Opis:
The aim of this study was to measure the weight of timber obtained from freshly cut trees and compare it with the applicable legal provisions pertaining the capability of transporting heavy loads by hand and also to indicate a problem significant for the occupational safety and health protection of employees working at wood harvesting. In Poland, about 40 million m3 of timber is harvested annually. The logs, with small diameter and length, are prepared for forwarding by arranging them by employees in the so called ‘packages’, which are placed by the route of the machine that collects and transports them to the logging road. Manhandling of the logs is an activity requiring the greatest energy expenditure (over 30 kJ/min) in the process of tree harvesting. Furthermore, it is also one of the key factors, which may lead to the development of musculoskeletal disorders. Regulations existing in the Polish labour law regulate the permitted weight of transported loads depending on the activity duration. For loads transported single−handedly this is 30 kg for a permanent employer, whereas 50 kg for workers doing the job occasionally or temporarily (no more than 4 times per hour and no longer than 4 hours during workday). Logs heavier than 50 kg may be carried only collectively providing the requirements of the minimal length (0,75 m) of the log per one person are met. We produced 2,5 m long logs and weighted them with an accuracy of 0,1 kg. The analysis revealed that approximately 30% of logs weighed between 30 and 50 kg, which introduces limitations in the number of carried logs per one person within a single shift. However, about 10% of the pine, 15% of spruce, 12% of beech and 38% of birch logs were heavier than 50 kg which should prevent carrying them single−handedly. Unfortunately, collective preparation of timber for forwarding is not popular among workers due to reduction in output, and at the same time the lower salary. Even if log for forwarding is prepared by two labourers, they most often work separately. As a result, the limits of the weight carried single− handedly by labourer are notoriously violated and exceeded.
Źródło:
Sylwan; 2018, 162, 07; 531-538
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural design and selected aspects of numerical simulations of a prototype container-platform for intermodal transport
Projekt konstrukcyjny i wybrane aspekty symulacji numerycznych prototypowej platformy-kontenera do transportu intermodalnego
Autorzy:
Krasoń, Wiesław
Dobrowolski, Daniel
Powiązania:
https://bibliotekanauki.pl/articles/2215599.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Technologiczno-Humanistyczny im. Kazimierza Pułaskiego w Radomiu
Tematy:
metal logs
wood logs
rail transport
road transport
prototype platform-container
FEM numerical test
MBS numerical test
dłużyca metalowa
dłużyca drewniana
transport kolejowy
transport drogowy
prototypowa platforma-kontener
testy numeryczne MES
testy numeryczne MBS
Opis:
The object of the research is a cheap, easy to build basic module with dimensions corresponding to typical railway containers. Such structures can be used to support the intermodal rail-road transport of wooden and metal logs. The basic structure and one assembled from two or more platforms with various longitudinal dimensions ensures high mobility resulting from the modular structure and the possibility of selecting transport configurations as well as the use of various forms of loading - unloading, including: typical crane operations, the use of forklifts or hook winches. The use of a platform-container will eliminate the need to repeat the operation of individual loading or unloading of each unit of the transported load e.g. a single block of wood, a bundle of bars, as a metal log, a single pipe, during each reloading operation - from the place of logging, production, storage, etc. The paper presents selected problems of the preliminary design and numerical strength tests of a single base module of the platform in a prototype version with dimensional equivalent of a 10'-foot railway container.
W pracy przedstawiono wybrane problemy wstępnego projektowania pojedynczego modułu bazowego platformy, odpowiednika wymiarowego 10’ stopowego kontenera kolejowego w wersji prototypowej. Badania wytrzymałościowe innowacyjnej konstrukcji wspomagane są metodami numerycznymi. Omówiono metodykę takich badań z wykorzystaniem MES i metod multibody MBS, zastosowane modele numeryczne oraz wybrane wyniki symulacji komputerowych odpowiadających krytycznym, najbardziej wytężonym wariantom eksploatacyjnym zastosowań platformy np. do załadunków hakowych.
Źródło:
Journal of Civil Engineering and Transport; 2022, 4, 3; 57--66
2658-1698
2658-2120
Pojawia się w:
Journal of Civil Engineering and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurements and interpretation of well logs in the Jeziórko sulphur deposit, Tarnobrzeg, Poland
Autorzy:
Jarzyna, J.
Bała, M.
Powiązania:
https://bibliotekanauki.pl/articles/2059424.pdf
Data publikacji:
2000
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
interpretation of well logging
mineral composition
porosity
dynamic elastic parameters
sulphur deposit
Opis:
Geophysical logs of borehole F-380 drilled through the Jeziórko sulphur deposit near Tarnobrzeg are interpreted in terms of mineral composition and porosity. Measurements were made from a standard set of logs by Geokar Geophysical Co. and from using university prototype logging equipment developed for shallow boreholes. Comparative analysis was made of GR and gamma ray spectroscopry, density, neutron-gamma, epithermal neutron, and acoustic logs. The interpretation yielded values for the volume of limestone, clay mineral content, sulphur content, and porosity while the barite content in the sulphur deposit was determined from a four-log set (GR, neutron-gamma, density, and acoustic). A gamma ray log with the uranium window subtracted, GRS, used instead of GR, gave the distinct drop of shaliness and caused the distinct changes of sulphur content for selected intervals of the section examined. To test the geophysical interpretation, the sulphur content of core samples of limestone was determined by three different techniques: ICP-AES analysis, sample combustion in the LECO automatic analyser and X-ray phase analysis. Clay mineral identification in the overburden was attempted using the Th vs. K cross-plot. Acoustic full wavetrains were used for rapid identification of formation zones with different elastic parameters. The dynamic coefficient of rock elasticity, i.e. the Poisson coefficient, was obtained from P-wave and S-wave velocities, determined in situ from acoustic full wavetrains.
Źródło:
Geological Quarterly; 2000, 44, 2; 157-166
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie mitm i dnsspoof do przechwycenia sesji komunikacyjnej
Monitoring system logs using the Logcheck
Autorzy:
WOŁOSZYN, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/456907.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Rzeszowski
Tematy:
dnsspoof
mitm
802.11
sieci bezprzewodowe
bezpieczeństwo
man-in-the-middle
wireless network
Opis:
Artykuł opisuje przeprowadzenie ataku mitm /man-in-the-middle/ wraz z przekierowaniem ruchu DNS na wybraną maszynę. Omówiony proces pozwala prześledzić ścieżkę napastnika do uzyskania celu, a jej znajomość pozwoli administratorom sieciowym na wnikliwe spojrzenie na problem i odniesienie się do własnych zasobów sieciowych.
The article describes an attack mitm /man-in-the-middle/ along with redirecting DNS traffic on the selected machine. Discuss the process allows you to trace the path of the attacker. Network administrators will be able to carefully look at the problem in relation to their own network resources.
Źródło:
Edukacja-Technika-Informatyka; 2014, 5, 2; 419-424
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiscale evaluation of a thin-bed reservoir
Autorzy:
Lis-Śledziona, Anita
Powiązania:
https://bibliotekanauki.pl/articles/1841759.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
thin beds
high resolution well logs prediction
horizontal resistivity
unsupervised neural network
self-organizing maps (SOM)
electrofacies
low resistivity pay
Opis:
A thin-bed laminated shaly-sand reservoir of the Miocene formation was evaluated using two methods: high resolution microresistivity data from the XRMI tool and conventional well logs. Based on high resolution data, the Earth model of the reservoir was defined in a way that allowed the analyzed interval to be subdivided into thin layers of sandstones, mudstones, and claystones. Theoretical logs of gamma ray, bulk density, horizontal and vertical resistivity were calculated based on the forward modeling method to describe the petrophysical properties of individual beds and calculate the clay volume, porosity, and water saturation. The relationships amongst the contents of minerals were established based on the XRD data from the neighboring wells; hence, the high-resolution lithological model was evaluated. Predicted curves and estimated volumes of minerals were used as an input in multimineral solver and based on the assumed petrophysical model the input data were recalculated, reconstructed and compared with the predicted curves. The volumes of minerals and input curves were adjusted during several runs to minimalize the error between predicted and recalculated variables. Another approach was based on electrofacies modeling using unsupervised self-organizing maps. As an input, conventional well logs were used. Then, the evaluated facies model was used during forward modeling of the effective porosity, horizontal resistivity and water saturation. The obtained results were compared and, finally, the effective thickness of the reservoir was established based on the results from the two methods.
Źródło:
Geology, Geophysics and Environment; 2021, 47, 1; 5-20
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing the degree of certainty on depleted gas reservoir perforation, using geophysical saturation methods
Autorzy:
Şuţoiu, F.
Foidaş, I.
Avramescu, M.
Powiązania:
https://bibliotekanauki.pl/articles/299076.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
depleted gas reservoir
geophysical investigation
effective thickness zone
high resolution logs
Opis:
New geophysical investigations, capable of highlight the most thin gas saturated layers, offers for depleted gas reservoirs a new chance. Lately Romgaz, used most types of anterior mentioned investigations, in purpose of analyzing the petrophysical properties of thin sands. Thereby, there had been identified within depleted gas reservoirs, many layers saturated with gas, which after perforation had been confirmed. After, these were included in the effective thickness zone, constitute the foundation for gas resources and reserves reevaluation. In this paper there will be presented some concrete examples regarding the usage of these high resolution logs, for a better definition of reservoir properties.
Źródło:
AGH Drilling, Oil, Gas; 2015, 32, 2; 359-368
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The measurement and interpretation methodology of resistivity logs affected by the Groningen effect – a Polish case study
Autorzy:
Baudzis, Stanisław
Jarzyna, Jadwiga A.
Puskarczyk, Edyta
Powiązania:
https://bibliotekanauki.pl/articles/184186.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Groningen effect
Laterologs
induction tools
resistivity
hydrocarbon saturation
Opis:
True formation resistivity Rt measurement is one of the fundamental logs in the calculation of hydrocarbon resources. That is why it is very important to have the most reliable resistivity data possible. In this paper, the various outcomes obtained by Polish well log analysts and engineers for the proper determination of hydrocarbon saturation in the Main Dolomite deposits in the Polish Lowland are presented. The long history of efforts directed to make proper exploitation decisions in wells where the Groningen effect has been observed is illustrated, starting with the standard measurement and interpretational approach, through the modified construction of a reference electrode in a Laterolog device and ending with an examination of HRLA (High Resolution Laterolog Array) or Array Compensated Resistivity Tool) ACRt results. The processing of resistivity logs with the special Poprawki software is included.
Źródło:
Geology, Geophysics and Environment; 2020, 46, 1; 35-47
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Próba opracowania modelu matematycznego do określania ekonomicznej efektywności zrywki ciągnikowej drewna długiego
Trial of elaboration of a mathematical model for determination of the economic effectivity of tractor skidding of logs
Autorzy:
Wojtkowiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/815143.pdf
Data publikacji:
1984
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1984, 128, 10
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deadwood in the oak forests of the Left Bank Forest-steppe of Ukraine
Autorzy:
Yarotskiy, Volodymyr Yu.
Pasternak, Volodymyr P.
Nazarenko, Vitalii V.
Powiązania:
https://bibliotekanauki.pl/articles/2041948.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
coarse woody debris
dead trees (snags)
dead logs
growing stock
stand
Opis:
Deadwood is an important component of forest ecosystems, and difference in the deadwood carbon stock depends on many variables including forest management. The aim of our study was to determine the patterns of formation of deadwood stocks in oak (Quercus robur L.) forests in the Left Bank Forest-steppe of Ukraine. As an outcome of the research, the data on deadwood parameters were obtained. The growth characteristics and coarse woody debris (CWD) characteristics were measured on intensive monitoring and inventory plots. Assessment of morphometric parameters of the CWD in oak stands was carried out by measuring diameters at top and bottom cut and length; to determine the carbon content, deadwood density was used. The distribution of deadwood by tree species, sizes and stages of decomposition was defined. The stock of dead trees (snags) in oak forest is 15.2 m3/ha and that of logs is 21.5 m3/ha. The carbon accumulation in oak forest stands in the Left Bank Forest-steppe of Ukraine was 3.4 and 4.5 t C/ha in dead trees and logs, respectively. The dynamics of deadwood stocks according to the results of repeated observations was given.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 4; 247-254
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sequence stratigraphic analysis of the Otu Field, onshore Niger Delta, using 3D seismic data and borehole logs
Autorzy:
Sanuade, O. A.
Kaka, S. I.
Powiązania:
https://bibliotekanauki.pl/articles/2060352.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
subsurface facies
stratigraphic trap
seismic geomorphology
sequence boundaries
channel
Opis:
3D seismic data and wireline logs from thirteen boreholes were used to establish a sequence stratigraphic analysis of Miocene depositional systems of the Otu Field in the onshore area of the Niger Delta. The subsurface facies of the field revealed three sequences that are bounded by four sequence boundaries (SBs) which are interpreted as erosional unconformities with three maximum flooding surfaces (MFSs). Sequences delineated are composed of lowstand systems tracts (LST), falling stage systems tracts (FSST), transgressive systems tracts (TST) and highstand systems tracts (HST) revealing depositional systems deposited during different phases of base level changes. Deposits identified within the LSTs are fluvial channel sands while TSTs capped the LST facies. HSTs are composed of coarsening and shallowing upwards intervals including deltaic fluvial sands. The sequences were deposited in transitional to shallow marine environments. A seismic geomorphological study carried out on all the SBs and MFS 3 shows a relationship between depositional environments, channel type and direction of palaeo-flow in relation to faults. The reservoirs of the LST and HST and seals from marine shale of the TST and HST could form stratigraphic traps for hydrocarbon accumulation in the Otu Field. This study has integrated 3D seismic and borehole log data to develop a sequence stratigraphic framework that would be a profitable means to guide hydrocarbon exploration and production strategies.
Źródło:
Geological Quarterly; 2017, 61, 1; 106--123
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Szkody wyrządzone w podrostach i nalotach przez niektóre środki pociągowe i dłużyce wleczone w czasie zrywki
Demage inflicted upon seedlings and saplings by certain draught devices and skidding of logs in logging operations
Autorzy:
Zaleski, K.
Powiązania:
https://bibliotekanauki.pl/articles/811858.pdf
Data publikacji:
1959
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1959, 103, 08
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear relations between defect frequency and volume of beech logs
Związki liniowe pomiędzy częstością występowania wody a miąższością sortymentów bukowych
Autorzy:
Karaszewski, Z.
Bembenek, M.
Mederski, P.S.
Szczepanska-Alvarez, A.
Giefing, D.F.
Wegiel, A.
Powiązania:
https://bibliotekanauki.pl/articles/7635.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2013, 83
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In-situ coal seam and overburden permeability characterization combining downhole flow meter and temperature logs
Autorzy:
Busse, J.
Scheuermann, A.
Bringemeier, D.
Hossack, A.
Li, L.
Powiązania:
https://bibliotekanauki.pl/articles/1395710.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Śląski. Wydział Nauk o Ziemi
Tematy:
coal seam detection
permeability
geophysical logging
exploration
methodology
przepuszczalność
pokłady węgla
metodyka
poszukiwania
Opis:
The planning and design of any coal mine development requires among others a thorough investigation of the geological, geotechnical and hydrogeological subsurface conditions. As part of a coal mine exploration program we conducted heat pulse vertical flow meter testing. The flow data were combined with absolute and differential temperature logging data to gain information about the hydraulic characteristics of two different coal seams and their over- and interburden. For the strata that were localised based on geophysical logging data including density, gamma ray and resistivity hydraulic properties were quantified. We demonstrate that the temperature log response complements the flow meter log response. A coupling of both methods is therefore recommended to get an insight into the hydraulic conditions in a coal seam and its overburden.
Źródło:
Contemporary Trends in Geoscience; 2016, 5, 1; 1-17
2299-8179
Pojawia się w:
Contemporary Trends in Geoscience
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of primary composition and diagenetic mineralization on natural gamma-ray and density logs of Carboniferous sandstones of the Dęblin Formation
Autorzy:
Wróblewska, Sara
Kozłowska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2058639.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
petrofacies analysis
gamma-ray log
density log
diagenetic mineralization
Dęblin Formation
Lublin Basin
Opis:
The Carboniferous sandstone of the Dęblin Formation is one of the targets for the petroleum industry in the Lublin Basin in southeastern Poland. The formation's primary and diagenetic composition makes it difficult to estimate its reservoir properties. Based on a detailed analysis of core and petrographic samples, normalization of gamma-ray and density logs was made with respect to the grain-framework of the rock. Recounted logs were used for distinguishing 4 different sandstone petrofacies. For these petrofacies, ranges of gamma-ray and bulk density values were determined and the impact of primary and diagenetic mineral composition was estimated. The application of this petrofacies method can upgrade the level of reservoir characterization and support the interpretation of uncored intervals.
Źródło:
Geological Quarterly; 2019, 63, 4; 741--756
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of qualitative structure the beech logs sorted by the old and the new European standart EN 1316-1
Studium porównawcze jakości kłód bukowych sortowanych według nowej i starej normy EN 1316-1
Autorzy:
Racko, V.
Cunderlik, I.
Powiązania:
https://bibliotekanauki.pl/articles/8529.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2013, 84
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of multivariate statistical methods for characterizing heterolithic reservoirs based on wireline logs : example from the Carpathian Foredeep Basin (Middle Miocene, SE Poland)
Autorzy:
Puskarczyk, E.
Jarzyna, J.
Porębski, Sz.
Powiązania:
https://bibliotekanauki.pl/articles/2059820.pdf
Data publikacji:
2015
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
log
Principal Components Analysis
Carpathian Foredeep
Miocene
heterolithic reservoir rock
Opis:
Principal Components Analysis (PCA) and Cluster Analysis (CA) were applied for well log data derived from heterolithic intervals drilled in two boreholes (Mrowla-1 and Cierpisz-2) in the Miocene fill of the Carpathian Foredeep. Both boreholes penetrated similar basement elevations conductive for structural trapping of hydrocarbons in an overlying thin-bedded heterolithic reservoir, which produces gas in commercial quantities in one borehole. The PCA was used to reduce data space preserving sufficient amounts of parameters for a differentiation between thin layers of sandstones and mudstones and between gas- and water-saturated horizons. In both boreholes, the number of logs was reduced to four significant principal components (PCs). Differences between gas-saturated and water-saturated layers were found. CA was used for the classification and grouping of data according to natural petrophysical features of the analysed rocks. The group corresponding to gas-saturated zones was found in the Cierpisz-2 borehole. It is concluded that PCA and CA can provide useful information for a more reliable identification of gas-saturated horizons.
Źródło:
Geological Quarterly; 2015, 59, 1; 157--168
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Factors Influencing Developers Sentiments in Commit Logs: Insights from Applying Sentiment Analysis
Autorzy:
Kaur, Rajdeep
Chahal, Kuljit Kaur
Saini, Munish
Powiązania:
https://bibliotekanauki.pl/articles/2123250.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
human factor
software development team
software developer
developers' sentiment
sentiment analysis
commit log
developer activity type
team size
Opis:
Background: In the open source software paradigm, software development depends upon efforts of volunteer members that are geographically dispersed and collaborate with each other over the Internet. Communication artifacts like mailing lists, forums, and issue tracking systems are used by developers for communication. The way they express themselves through these communication channels greatly influences their productivity, efficiency of development activities, and survival of the project as well. Therefore, it is essential to understand affective state of developers’ contributions to make software engineering more effective. Aim: This study examined commit logs of seven GitHub projects to analyze developers’ sentiments. This study also investigated the relationship of developers’ sentiments in commit logs with team size of project, type of change activity, and contribution volume. Method: Sentiments of developers are calculated using SentiStrength-SE tool that is specialized in software engineering domain. Results: Our findings revealed that the majority of sentiments conveyed by developers in commit logs were neutral. Furthermore, we found that team size, change activity, and commit contribution volume influenced sentiments conveyed in commit logs. Conclusion: Our findings will help project managers to better understand developer sentiments while performing different software development tasks/activities. It will be beneficial in improving developer productivity and retention.
Źródło:
e-Informatica Software Engineering Journal; 2022, 16, 1; art. no. 220102
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czas trwania etapów dostawy wielkowymiarowego drewna sosnowego do tartaku
Duration of stages of delivery of large-sized Scots pine wood to the sawmill
Autorzy:
Tymendorf, L.
Trzciński, G.
Powiązania:
https://bibliotekanauki.pl/articles/979337.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
wood supply chain
saw logs transport
duration time
round wood transport stages
Opis:
The efficiency of wood transport depends not only on the maximum load capacity, but also on the duration of individual transport operations. The purpose of the presented research is to analyze the duration of transport stages of Scots pine large−size wood (saw logs) and indicate the factors that affect the structure of the duration of the entire operation. The operation was divided in to truck driving for a load on a public and forest road, driving between loading points in the forest including timber loading, driving with saw logs on a forest and public road, waiting for entry to the sawmill as well as verification and unloading of wood in the sawmill. Data on the duration of each operation was determined on the basis of information obtained from the course information cards. The waiting time for entering the sawmill as well as wood checking and unloading was based on data from wood reception in sawmill. 1514 randomly selected transports in a period of twelve months from 40 forest districts were analyzed. The average time of empty drive for a load by public road was 1:03 [hh:mm], with the range from 0:01 to 7:30. Driving time with a load to the sawmill was an average of 1:23, with the span from 0:05 to the 5:30. Driving on forest roads for load and with load is at a similar level of 11−12 minutes. The average time of loading wood in the forest was 39 minutes, with a minimum of 10 minutes, and maximum of 3 hours. Most trucks entered the plant immediately, nevertheless the average waiting time was 38 minutes, and the majority (75%) of transports need to wait up to one hour. Volume and quality checking, as well as unloading in the plant, took 42 minutes on average. The shortest delivery lasted 1:00 and the longest 17:37. The average transport duration of wood to the sawmill was 4:51. The number of places for loading wood in the forest has significant impact on the duration of collecting the load, and thus also on the time of the entire delivery. The largest fraction in the total duration of transport is associated with traveling on public roads. 27.1 and 28.8% is the time of loaded truck, and 20.5% and 21.7% is the time of the empty ride. A big difference (5%) occurs the time of collecting wood in the forest depending on the number of places from which wood was loaded. This time has a significant share (17.45%) in the structure of the delivery duration. Duration of the individual stages of wood transport in particular months shows little variability.
Źródło:
Sylwan; 2020, 164, 07; 549-559
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Określenie współczynników zamiennych dla drewna wielkowymiarowego kłodowanego sosnowego i świerkowego
Determination of conversion factors for pine and spruce logs in stacks
Autorzy:
Witkowska, J.
Jodlowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/46096.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drewno wielkowymiarowe
drewno sosnowe
drewno swierkowe
stosy drewna
miazszosc drewna
pomiary drewna
wspolczynniki zamienne
Źródło:
Leśne Prace Badawcze; 2019, 80, 3
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of the 2D convective heat exchange between subjected to freezing and to following defrosting logs and the surrounding environment
Modelowanie konwekcyjnej wymiany ciepła pomiędzy kłodami w procesie zamrażania i odmrażania, a otoczeniem
Autorzy:
Deliiski, N.
Brezin, V.
Tumbarkova, N.
Powiązania:
https://bibliotekanauki.pl/articles/8933.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2014, 86
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza efektywności pracy ładowarki Ł-2 przy załadunku drewna dłużycowego na wagony
Analiz ehffektivnosti raboty pogruzchika L-2 pri pogruzke dlinnojj drevesiny na vagony
Analysis of work productivity of the loader L-2 during loading of logs on wagons
Autorzy:
Kubiak, M.
Rozanski, H.
Powiązania:
https://bibliotekanauki.pl/articles/811510.pdf
Data publikacji:
1977
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1977, 121, 12
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of qualitative structure the beech logs sorted by European standard EN 1316-1 and Slovak standard STN 480065
Studium porównawcze struktury jakościowej kłód bukowych sortowanych zgodnie z normą EU EN 1316-1 i słowacką STN 480065
Autorzy:
Racko, V.
Cunderlik, I.
Powiązania:
https://bibliotekanauki.pl/articles/8218.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2014, 85
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deformation of beech wood - the sources and their identification before beech logs processing
Wady kształtu kłód bukowych - źródła i ich identyfikacja przed przerobem
Autorzy:
Kudela, J.
Gryc, V.
Toth, V.
Powiązania:
https://bibliotekanauki.pl/articles/9071.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
deformation
wood
beech wood
source
identification
log processing
tension wood
solid wood panel
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2014, 87
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Historia i terazniejszosc zalesiania i odnawiania siewem
The history and the present status of afforestation and forest regeneration through seeding
Autorzy:
Łukaszewicz, J.
Gil, W.
Powiązania:
https://bibliotekanauki.pl/articles/973166.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zalesianie
Pinus
odnowienia lasu
brzoza
odnowienia z siewu
sosna
buk
Quercus
Betula
Fagus
leśnictwo
dąb
spruce logs
bark beetles
timber protection
lime
Opis:
In April 2005, 2 sets by 3 stacks containing Norway spruce logs were exposed in sunny and shaded place within the forest. In each set logs in 2 stacks were sprayed with Ca(OH)2 aquatic dilution with the addition of milk and vegetable oil (1 stack as a whole, and 1 individually – log by log), and 1 left for control. At the end of June 9 insect species infesting the logs were found, among which the most frequent were Hylurgops palliatus (Gyll.) – 41,1% and Pityogenes chalcographus (L.) – 35,6%. The treated logs were less (sometimes – significantly) infested by the most frequently occurring species, but the difference between two variants of treatment was not very high. The logs exposed in sunny place were less infested than those stocked under stand canopy. As this environmentally friendly treatment reduced the infestation of logs by bark beetles (including I. typographus), it can be recommended especially for mountain areas under protection regime.
Źródło:
Sylwan; 2007, 151, 03; 11-22
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of selected traits of typical supply of oak logs and a comparison of the efficiency of their processing into flooring
Autorzy:
Rębkowski, Bartłomiej
Koczan, Grzegorz
Kozakiewicz, Paweł
Krzosek, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/2200218.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
wood raw material
European oak wood
wood flooring
multi-layer parquet elements
X-ray computed tomography
Opis:
An analysis of selected traits of typical supply of oak logs and a comparison of efficiency of their processing into flooring. The research was performed on typical supply of oak wood logs of WC02 class, diameter from 29 to 34 cm, measured in the middle of its length (full log length 2.3 m). Wood came from Bobolice forest district, Lubowo forest subdistrict. This type of raw wood is used in standard machining processes (sawing) of multi-layer flooring face layer (top layer, lamella). The application of X-ray computed tomography allows to perform full valuation of raw material quality. The introduction of partially chip-less machining technology leads to significant savings in wood in comparison with standard machining (sawing).
Analiza wybranych cech typowej dostawy kłód dębowych oraz porównanie wydajności ich przerobu na materiały podłogowe. Badania przeprowadzono na drewnie dębowym WC02 o średnicy w połowie długości bez kory od 29 do 34 cm i długości 2,3 m z Nadleśnictwa Bobolice, Leśnictwa Lubowo (reprezentatywny surowiec). Tego typu surowiec jest stosowany w standardowej technologii obróbki wiórowej przy wytwarzaniu warstw licowych (lameli) desek warstwowych. W pracy przeanalizowano jak wpłynęłaby na wydajność ilościową, zamiana technologii na częściowo bezwiórową. Zastosowanie obróbki częściowo bezwiórowej pozwala na zaoszczędzenie znaczących ilości surowca. Straty przy obróbce częściowo bezwiórowej w odniesieniu do całej kłody dębowej mogą być o ok. 15 punktów procentowych niższe niż w przypadku obróbki wiórowej. W odniesieniu do pryzmy różnica wielkości strat może wynosić nawet do 31 punktów procentowych. Sama analiza ilościowa nie daje odpowiedzi o celowości wprowadzania nowej technologii, bowiem nie uwzględnia wielu czynników np.: energochłonności obróbki hydrotermicznej niezbędnej przy skrawaniu. Równie istotna jest jakość pozyskiwanych lameli dębowych, co było przedmiotem analiz w innej pracy.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2020, 109; 92--102
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reservoir parameters of lithostratigraphic successions of the lower Paleozoic strata in the Polish part of the Baltic region based on laboratory studies and well logs
Autorzy:
Semyrka, G.
Jarzyna, J.
Pikulski, L.
Kamierczuk, M.
Semyrka, R.
Powiązania:
https://bibliotekanauki.pl/articles/2059064.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Baltic Region
Lower Paleozoic
petrophysical parameters
pore space
porosimetry
well logging
Opis:
For lithostratigraphic successions of the lower Paleozoic strata in the Polish part of the Baltic Sea between the Slupsk Block and Courland Block, assessment of petrophysical properties was carried out with the use of mercury porosimetry and well logging results. The porosimetric measurements allowed to determine critical rock parameters and to distinguish genetic types of reservoirs. To complete the information on reservoir parameters, available well logs were used. The logs allowed identification of Cambrian strata in boreholes and the distinguishing of several lithostratigraphical units. Results of the porosimetric measurements demonstrated the strongly heterogeneous character of the pore space in the Cambrian rocks, with generally very weak reservoir properties. Fractured and porous-fractured rock space is a principal feature here. Well log anomalies confirmed the diversified lithological development of the Cambrian profile and the somewhat better reservoir parameters of rocks of the Paradoxides paradoxissimus Superzone and the shaly character of the Eccaparadoxides oelandicus Superzone. From the point of view of volumes of potential hydrocarbon accumulations, the capacity of the Cambrian deposits is low, but this is a basic feature of reservoir rocks with fractured and fractured-porous space.
Źródło:
Geological Quarterly; 2010, 54, 2; 227-240
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura poszczególnych kategorii czasu przy zrywce dłużyc ciągnikami
Structure of particular time categories at skidding logs with tractors
Autorzy:
Wojtkowiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/822314.pdf
Data publikacji:
1991
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
pozyskiwanie drewna
dluzyce
zrywka drewna
zrywka ciagnikiem
ciagnik Ursus C-355
ciagnik Tree Farmer C-5-D
ciagnik LKT 80
struktura dnia roboczego
czas pracy
wykorzystanie czasu
Źródło:
Sylwan; 1991, 135, 10
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 75

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