Skocz do pozycji: 1.

Tytuł:

Ocena internetowych kanałów komunikacji z klientem w procesie współtworzenia innowacji
The efficiency of internet communication channels with the customer in the proces of innovation co-creating

Autorzy:

Jelonek, Dorota

Powiązania:

https://bibliotekanauki.pl/articles/432400.pdf

Data publikacji:

2014

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

internet communiaction channels
efficiency of Internet communication channels
co-creation
innovation

Opis:

Together with the development of information and communication possibilities of the Internet there is an increase of the role of the customer as the partner in the process of co-creating innovation with the utilization of widely understood model of open innovations. The aim of the article is the assessment of the efficiency of communiaction channels used by firms in relations with the customer. In the assessment there were used findings of research carried out among students who declared activities in scope of: notifyings innovative ideas, testing of products (services) or undertaking the role of a consultant. The assessment took into account the criteria of comfort, speed and efficiency from the perspective of customer and the reaction of a company in the given channel of communication. E-mail, sms, forum, blog, community portal are comfortable but their utilization by companies requires improvement in respect of rate of reaction and efficiency. The channels of communication in the synchronous mode were highly evaluated in respect of efficiency and comfort: telephone, chat, video conversation and Skype. The best but still little widespread solutions are platforms for ideas reporting and the collaboration with the user which are created within company's portals.

Źródło:

Informatyka Ekonomiczna; 2014, 1(31); 318-329
1507-3858

Pojawia się w:

Informatyka Ekonomiczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Performance of Distribution Channels Shown on the Example of Company Specialising in Meat Processing

Autorzy:

Rorat, Joanna Maria

Powiązania:

https://bibliotekanauki.pl/articles/504080.pdf

Data publikacji:

2016

Wydawca:

Międzynarodowa Wyższa Szkoła Logistyki i Transportu

Tematy:

distribution channels
effectiveness of distribution channels meat processing
minimization distribution costs

Opis:

As far as the rapid development of global marketing network is concerned , it is easy to notice that logistics is becoming increasingly important. The growing competition makes these networks more efficient. More and more opportunities to bring products to the customer disorganize sales network management. The analysis of the effectiveness of distribution channels allows a close examination of efficiency of how the company reaches its customers. It also supports decisions regarding the introduction of new, previously unused channels of distribution, or modification of the already in-use ones. The range of work included a manufacturer specializing in meat processing and production of meat products, distributed in southern Poland. Using the point-analytical method, the effectiveness of distribution channels used in the company was evaluated. As a result, it was possible to determine the performance of individual sales channels. There were three distribution channels: by-company, sponsored and networking. The most effective appeared to be the networking channel, which scored a total of 235 points. Given the greatest potential of distribution, this channel, in terms of the size of the batch supplied to markets, without doubt will continue to be one of the leading directions of development in the future of the company. In second place was the by-company channel with 195 points, while the sponsored channel was the least effective. However, as a conclusion from the information gathered from the company itself, each channel will be developed in the future, proportionally to their current rank.

Źródło:

Logistics and Transport; 2016, 29, 1; 19-24
1734-2015

Pojawia się w:

Logistics and Transport

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Modeling the phenomena accompanying the condensation of environmentally friendly refrigerants in mini-channels

Autorzy:

Kuczyński, Waldemar

Powiązania:

https://bibliotekanauki.pl/articles/2204074.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

refrigerants
condensation
mini-channels

Opis:

This paper presents the results of an experimental study and mathematical modeling of the effect of dynamic instabilities on the condensation phase transformation of the refrigerants homogeneous R134a and its replacement in the form of isomers R1234yf and R1234ze and R404A or R507 and R448A in pipe mini-channels. In the case of homogeneous chlorofluorocarbons (CFCs), it is the 1234 isomers that are envisioned as substitutes for the withdrawn ones with high ozone depletion potential and global warming potential. For zeotropic and azeotropic mixtures, for example, these are R507 or R448A. The paper presents a dimensional analysis procedure based on the Buckingham Π theorem to develop a regression velocity model of pressure dynamic instabilities. The experimental part of the work was carried out with the use of tubular mini-channels with internal diameter 1.40–3.3 mm.

Źródło:

Archives of Thermodynamics; 2023, 44, 1; 121--137
1231-0956
2083-6023

Pojawia się w:

Archives of Thermodynamics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Error statistics for concatenated systems on non-renewal time-varying channels

Autorzy:

Pimentel, C.

Powiązania:

https://bibliotekanauki.pl/articles/309548.pdf

Data publikacji:

2001

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

finite state channels
multigap distribution
constrained codes
concatenated systems
Gilbert-Elliott channels
combinatorial methods

Opis:

The statistics of the error process generated by a discrete super channel formed by the concatenation of a constrained encoder, a non-renewal finite state channel (FSC), and a constrained decoder is studied in this paper. First, recursions are developed for the error weight distribution. This statistics is relevant to the design of coding schemes and interleaving in concatenated. systems. We also study the renewal nature of the residual error process as modified by the constrained decoder. Ferreira et al. conjectured that if the channel model is a renewal FSC, the super channel can be modeled as a similar renewal model. We use a statistics called the multigap distribution to analytically disprove this hypothesis. Furthermore, the effect of interleaving is investigated from a new perspective using the variance of the multigap distribution.

Źródło:

Journal of Telecommunications and Information Technology; 2001, 3; 55-60
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Measurements of 3D turbulence structure in a compound channel

Autorzy:

Czernuszenko, W.
Kozioł, A.
Rowiński, P. M.

Powiązania:

https://bibliotekanauki.pl/articles/241134.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN

Tematy:

open channels
compound channel
turbulence
measurements

Opis:

The paper describes some turbulence measurements carried out in an experimental compound channel with flood plains. The surface of the main channel bed was smooth and made of concrete, whereas the floodplains and sloping banks were covered by cement mortar composed with terrazzo. Instantaneous velocities were measured be means of a three-component acoustic Doppler velocity meter (ADV) manufactured by Sontek Inc. This article presents the results of measurements of primary velocity, the distribution of turbulent intensities, Reynolds stresses, autocorrelation functions, turbulent scales, as well as the energy spectra.

Źródło:

Archives of Hydro-Engineering and Environmental Mechanics; 2007, 54, 1; 55-73
1231-3726

Pojawia się w:

Archives of Hydro-Engineering and Environmental Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

The impact of fossils on diagenetically controlled reservoir quality : the Zechstein Brońsko Reef

Autorzy:

Fheed, Adam

Powiązania:

https://bibliotekanauki.pl/articles/191256.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

carbonates
dissolution channels
diagenesis
fossils
porosity

Opis:

Although the sedimentation and diagenesis of the Polish Zechstein Limestone strata (Ca1, Permian) already have been investigated, relatively little has been done to resolve their petrophysical potential. Therefore, the gap between sedimentological and petrophysical studies was bridged through an integrated analysis of geological and geophysical data. The results of core description, polarized-light microscopy, well log interpretations and laboratory measurements on core samples were combined with previously published nuclear magnetic resonance (NMR) and X-ray microtomography (μCT) data, especially helpful in the recognition of pore geometry. The Ca1 strata of the Brońsko-1 and Brońsko-2 wells, located on the Zechstein Brońsko Reef (West Poland), were studied to determine the influence of fossils on porosity and permeability. It was concluded that greater diversification of the original biota led to an increase in porosity and variation in pore geometry. While encrusting organisms such as foraminifers promoted the development of channel and fracture porosity, the dissolution of the primarily aragonitic bivalve and gastropod shells and the shells of terebratulid brachiopods often gave rise to the formation of cavernous and mouldic porosity. The channels appear to be most common in the bryozoan-foraminifer biofacies, representing a shallowing of the depositional environment. Caverns, in turn, corresponded to the organisms of the brachiopod-bryozoan and the lightly karstified bivalve-gastropod biofacies, both of which probably experienced the influence of sabkha conditions, leading to a general decrease in porosity. The bryozoan zoecia tended to enhance both primary intraparticle voids, and after their dissolution, secondary intraparticle pores, which showed limited connectivity in the high-energy Acanthocladia biofacies, where considerable fragmentation of fossils took place, hence decreasing the permeability. Anhydrite cementation was found to be the most pronounced factor controlling porosity destruction, while dolomitization enhanced it significantly, especially for the stromatolitic biofacies, where small, unconnected vugs were formed owing to this process. The permeability is typically below 100 mD, and this is caused by the rich diagenetic history of the reef, that recorded marine, sabkha-related and burial cementation, now represented by the different fabrics of anhydrite, calcite, and dolomite.

Źródło:

Annales Societatis Geologorum Poloniae; 2019, 89, 1; 47-81
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

The problem with flow in radial channels synchronous machine

Autorzy:

Makki, Z.
Janda, M.
Deeb, R.

Powiązania:

https://bibliotekanauki.pl/articles/377188.pdf

Data publikacji:

2012

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

radial channels
synchronous machine
flow rate

Opis:

This paper describes the use of computational methods for solving the flow of the air-cooling in the large synchronous machines where it is used to cool the stator winding and stator radial channels which are located between the stator packet sheets. The overall process flow is mostly influenced by the size of air gap between stator and rotor, the shape of the radial channels, and by flow rates in machines. This paper mostly discusses about the influence flow rate of the cooling medium which has effects on the pressure distribution and flow rate in the radial channels. Cooling medium considered in this article an air and for and for calculation was chosen ANSYS CFX.

Źródło:

Poznan University of Technology Academic Journals. Electrical Engineering; 2012, 72; 75-82
1897-0737

Pojawia się w:

Poznan University of Technology Academic Journals. Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

On a New Approach to SNR Estimation of BPSK Signals

Autorzy:

Moazzeni, T.
Amei, A.
Ma, J.
Jiang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/227148.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

digital communication
statistical analysis
AWGN channels

Opis:

Signal-to-noise ratio (SNR) information is required in many communication receivers and their proper operation is, to a large extent, related to the SNR estimation techniques they employ. Most of the available SNR estimators are based on approaches that either require large observation length or suffer from high computation complexity. In this paper, we propose a low complexity, yet accurate SNR estimation technique that is sufficient to yield meaningful estimation for short data records. It is shown that our estimator is fairly close to the (CRLB) for high SNR values. Numerical results also confirm that, in terms of convergence speed, the proposed technique outperforms the popular moment based method, M2M4.

Źródło:

International Journal of Electronics and Telecommunications; 2012, 58, 3; 273-278
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Ion channels-related diseases.

Autorzy:

Dworakowska, Beata
Dołowy, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/1044310.pdf

Data publikacji:

2000

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

nicotinic acetylcholine receptor
cGMP-gated channel
ion channels
glycine receptor
voltage-gated channels
channel-related genetic disorders

Opis:

There are many diseases related to ion channels. Mutations in muscle voltage-gated sodium, potassium, calcium and chloride channels, and acetylcholine-gated channel may lead to such physiological disorders as hyper- and hypokalemic periodic paralysis, myotonias, long QT syndrome, Brugada syndrome, malignant hyperthermia and myasthenia. Neuronal disorders, e.g., epilepsy, episodic ataxia, familial hemiplegic migraine, Lambert-Eaton myasthenic syndrome, Alzheimer's disease, Parkinson's disease, schizophrenia, hyperekplexia may result from dysfunction of voltage-gated sodium, potassium and calcium channels, or acetylcholine- and glycine-gated channels. Some kidney disorders, e.g., Bartter's syndrome, policystic kidney disease and Dent's disease, secretion disorders, e.g., hyperinsulinemic hypoglycemia of infancy and cystic fibrosis, vision disorders, e.g., congenital stationary night blindness and total colour-blindness may also be linked to mutations in ion channels.

Źródło:

Acta Biochimica Polonica; 2000, 47, 3; 685-703
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Public relations. Komunikacja dwukierunkowa
Public relations. Bidirectional communication

Autorzy:

Frączek, Adriana

Powiązania:

https://bibliotekanauki.pl/articles/902179.pdf

Data publikacji:

2012

Wydawca:

Gdańska Wyższa Szkoła Humanistyczna

Tematy:

public relations
communication
bidirectional communication
communication channels

Opis:

A variety of communication channels, which can use the organisation meant that the process is more difficult and requires huge effort, work, and learn in a very short time. The domain of specialists, PR is dialogue with the environment, is already known to many of the tools of PR, but it's just the Internet promotes the improvement of this interactive communication. Every action that we take on the Internet has a dimension of all forms must be present but PR surrounded with special care. Internet deep into relationships between an organization and its environment. Society is not able to permanently trust organization or institutions, which make sense, the aims and principles of ac-tion does not understand. PR communication methods with the environment, these classic with modern, permeate each other. This article attempts to clarify what is communication with the environment and what changes occur in the communication process as a result of digitisation in the practice of the use of PR tools.

Źródło:

Studia Gdańskie. Wizje i rzeczywistość; 2012, 9; 132-144
1731-8440

Pojawia się w:

Studia Gdańskie. Wizje i rzeczywistość

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Endothelium as target for large-conductance calcium-activated potassium channel openers

Autorzy:

Wrzosek, Antoni

Powiązania:

https://bibliotekanauki.pl/articles/1040527.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

endothelium-derived hyperpolarising factor
potassium channels
endothelium

Opis:

The endothelium is a highly active organ responsible for vasculatory tone and structure, angiogenesis, as well as hemodynamic, humoral, and inflammatory responses. The endothelium is constantly exposed to blood flow, sheer stress and tension. Endothelial cells are present as a vasculature in every tissue of the body and react to and control its microenvironment. A variety of ion channels are present in the plasma membranes of endothelial cells. These include potassium channels such as inwardly rectifying potassium (Kir) channels, voltage-dependent (Kv) channels, ATP-regulated potassium (KATP) channels and three types of calcium-activated potassium channels (KCa), the large (BKCa), intermediate (IKCa), and small (SKCa) -conductance potassium channels. Potassium current plays a critical role in action potentials in excitable cells, in setting the resting membrane potential, and in regulating neurotransmitter release. Mitochondrial isoforms of potassium channel contribute to the cytoprotection of endothelial cells. Prominent among potassium channels are families of calcium-activated potassium channels, and especially large-conductance calcium-activated potassium channels. The modulation of BKCa channels, which are voltage- and calcium-dependent, has been intensively studied. The BKCa channels show large expression dynamics in endothelial cells and tissue-specific expression of large numbers of alternatively spliced isoforms. In this review, a few examples of the modulatory mechanisms and physiological consequences of the expression of BKCa channels are discussed in relation to potential targets for pharmacological intervention.

Źródło:

Acta Biochimica Polonica; 2009, 56, 3; 393-404
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Transmembrane segment M2 of glycine receptor as a model system for the pore-forming structure of ion channels.

Autorzy:

Bednarczyk, Piotr
Szewczyk, Adam
Dołowy, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/1043689.pdf

Data publikacji:

2002

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

black lipid membrane
ion channels
glycine receptor

Opis:

The glycine receptor belongs to the ligand-gated ion channel superfamily. It is a chloride conducting channel composed of four transmembrane domains. It was previously shown that the second transmembrane domain (M2) of the glycine receptor forms an ion conduction pathway throught lipid bilayers. The amino-acid sequence of the transmembrane segment M2 of the glycine receptor has a high homology to all receptors of the ligand-gated ion channel superfamily. In our report, we have used a synthetic M2 peptide. It was incorporated into a planar membrane of known lipid composition and currents induced by M2 were measured by the Black Lipid Membrane technique. When the planar lipid bilayer was composed of 75% phosphatidylethanolamine and 25% phosphatidylserine, the reversal potential measured in a 150/600 mM KCl (cis/trans) gradient was -19 mV suggesting that the examined pore was preferential to anions, PK/PCl = 0.25. In contrast, when 75% phosphatidylserine and 25% phosphatidylethanolamine was used, the reversal potential was +20 mV and the pore was preferential to cations, PK/PCl = 4.36. Single-channel currents were recorded with two predominant amplitudes corresponding to the main-conductance and sub-conductance states. Both conductance states (about 12 pS and 30 pS) were measured in a symmetric solution of 50 mM KCl. The observed single-channel properties suggest that the selectivity and conductance of the pore formed by the M2 peptide of the glycine receptor depend on the lipid composition of the planar bilayer.

Źródło:

Acta Biochimica Polonica; 2002, 49, 4; 869-875
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Characterization of the indoor radio propagation channel at 2.4 GHz

Autorzy:

Wysocki, T. A.
Zepernick, H.-J.

Powiązania:

https://bibliotekanauki.pl/articles/309221.pdf

Data publikacji:

2000

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

indoor radiocommunication
microwave propagation
fading channels
jamming

Opis:

The unlicensed industrial, scientific, and medical (ISM) band at 2.4 GHz has gained increased attention recently due to the high data rate communication systems developed to operate in this band. The paper presents measurement results of fading characteristics, multipath parameters and background interference for these frequencies. Some statistical analysis of the measured data is presented. The paper provides information that may be useful in design and deployment of communication systems operating in the 2.4 GHz ISM band, like those compilant with IEEE 802.11 standard and Bluetooth open wireless standard.

Źródło:

Journal of Telecommunications and Information Technology; 2000, 3-4; 84-90
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Marketing costs and price spread for selected fruit crops in Haryana state: a stydy of selected districts
Koszty sprzedaży i rozpiętość cenowa wybranych upraw owoców w stanie Haryana: analiza wybranych dystryktów

Autorzy:

Rani, Sumista
Lal, Choote
Kait, Rohtas

Powiązania:

https://bibliotekanauki.pl/articles/2165512.pdf

Data publikacji:

2022

Wydawca:

Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej

Tematy:

fruit grower
intermediaries
fruit crops
marketing channels

Opis:

Subject and purpose of work: The study aims to analyse the existing marketing system along with marketing channels, costs, margins, and marketing efficiency. Materials and methods: The study was conducted in the districts of Sirsa, Sonipat and Yamuna Nagar in Haryana during the year 2020–21. The study was based on primary data collected from a field survey with the help of a pre-tested questionnaire. A simple tabulated method, price spread, and market efficiency analyses were employed. Results: The study revealed that the producer share in terms of consumer rupees is the highest in Channel VI, followed by Channels IV, V and II. Channel VI is the most efficient channel due to the absence of intermediaries. Channel I is the least efficient due to the greatest number of intermediaries present in this channel. Conclusions: The study has suggested that the government should regulate the fruit trade so that the involvement of mediators in the fruit market may be reduced. Cold storage should be provided at a reasonable price. The government should provide transportation facilities (refrigerated lorries) for fruit products at a reasonable cost.

Źródło:

Economic and Regional Studies; 2022, 15, 4; 533-547
2083-3725
2451-182X

Pojawia się w:

Economic and Regional Studies

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Consumptions Structure and Consumer Insights for Dairy Products - Avoidance, Distribution, own Production and Occasions for Consumption
truktura i prawidłowości dotyczące konsumpcji produktów mlecznych - unikanie, kanały dystrybucji, samozaopatrzenie, okazje spożywania

Autorzy:

Wielicka, Anna

Powiązania:

https://bibliotekanauki.pl/articles/2033435.pdf

Data publikacji:

2004-12-31

Wydawca:

Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane

Tematy:

Consumption
Consumer
Milk market
Distribution channels
Supply

Opis:

The paper presents some features of population regarding consumption of dairy products, which is examined in four following areas: avoidance, places of purchase, inclination to undertaking own production, occasions for consumption. The research resulted in following findings. Taste is the most important reason to reject milk products. Consumers buy them mainly in convenience stores. High number of consumers produce milk products. The most frequent occasion for consumption of dairy products is breakfast. Also milk drinks accompany mainly this meal.
Praca ma na celu scharakteryzowanie konsumenta produktów mlecznych w czterech wybranych wymiarach:1) przyczyn rezygnacji z konsumpcji,2) miejsc zakupu produktów mlecznych,3) przetwarzania mleka we własnym zakresie,4) okazji spożywania produktów mlecznych.Wyniki badań przedstawiają się następująco:1) najczęstszym powodem odrzucenia produktów mlecznych jest ich smak,2) najczęstszym miejscem zakupu są sklepy osiedlowe położone blisko miejsca zamieszkania respondentów,3) produkcja własna przetworów mlecznych dotyczy znacznego procentu badanych,4) produkty mleczne najczęściej są konsumowane podczas śniadania.

Źródło:

Journal of Agribusiness and Rural Development; 2004, 3, 359; 211-227
1899-5241

Pojawia się w:

Journal of Agribusiness and Rural Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Laser modified functional carbon-based coatings on titanium substrate for cardiac tissue integration and blood clotting inhibition

Autorzy:

Major, Roman
Ostrowski, Roman
Surmiak, Marcin
Trembecka-Wójciga, Klaudia
Lackner, Jurgen

Powiązania:

https://bibliotekanauki.pl/articles/1844973.pdf

Data publikacji:

2020

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

thin layers
migration channels
laser ablation
microstructure

Opis:

The work focused on developing functional coatings on titanium substrates that would facilitate the integration with the cardiac tissue and with a specific form of connective tissue like blood. Surface modifications consisted in the laser evaporation of part of the biocompatible layer, thus creating a suitable environment for a particular tissue. For the myocardium integration, the metal surface was refined by biohemocompatible coatings. Such surfaces were the starting point for further modifications in the form of channels. The channeled surfaces enabled a controlled cell migration and proliferation. The interaction of endothelial cells with the material was highly dependent on the surface characteristics such as: topography, microstructure or mechanical properties. The controlled cellular response was achieved by modifying the surface to obtain a network of wells or channels of different dimensions via the laser interference lithography. This technique determined a high resolution shape, size and distribution patterns. As a result, it was possible to control cells in the scale corresponding to biological processes. The surface periodization ensured the optimal flow of oxygen and nutrients within the biomaterial, which was of a key importance for the cell adhesion and proliferation. The work attempted at producing the surface networks mimicking natural blood vessels. To stimulate the formation of new blood vessel the finishing resorbable synthetic coatings were applied on the surface to act as a drug carrier. Therefore, the initial trial to introduce factors stimulating the blood vessels growth was performed.

Źródło:

Engineering of Biomaterials; 2020, 23, 155; 22-31
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Development of distribution and sales of low alcohol beverages in Poland

Autorzy:

Majchrzak-Lepczyk, Justyna
Szymczak, Maciej

Powiązania:

https://bibliotekanauki.pl/articles/1833810.pdf

Data publikacji:

2020

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

distribution
distribution channels
sale techniques
logistics
innovations

Opis:

The struggle for the customer is symptomatic of the companies operating on contemporary markets. Developing new distribution channels and sales techniques is manifestation of the struggle. Dynamic market changes determine how vendors operate and induce them to implement innovation concepts in distribution, sales and logistics. These original solutions create new shopping modes and possibilities. The purpose of the paper is to present new solutions in this area, which are implemented and used within the alcohol industry in Poland. Scope of the study relates to beverages of low alcohol excluding beer. The authors focus mainly on solutions for distribution and sales, but they won’t pass over complementary solutions for customer communication, including those aimed at education of consumers, which is essential in this industry. The structure of the paper makes it possible to present transformation of alcohol market in Poland, taking into account changes in the processes and the value they create for the consumer.

Źródło:

Research in Logistics & Production; 2020, 10, 1; 23--34
2083-4942
2083-4950

Pojawia się w:

Research in Logistics & Production

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Organized Economic Interests and European Integration: the Question of (neo)corporatism

Autorzy:

Ząbkowicz, Anna

Powiązania:

https://bibliotekanauki.pl/articles/517154.pdf

Data publikacji:

2014

Wydawca:

Instytut Badań Gospodarczych

Tematy:

economic interests
channels of access
European Union

Opis:

When economic development is considered, political economy is at stake; in this perspective growth or counter-growth forces operate within the institutional framework. The analysis focuses on corporatist forms of social dialogue in the international environment of the EU and within the European structures. First, the notion of corporatism as opposed to other institutionalized channels of access is explained. Then, the paper presents corporatist forms at the national level under change. Next, it deals with interest coordination at the European Commission level. The paper concludes that an erosion of corporatist forms is visible; no embracing pattern in the EU should be expected instead; on the contrary, increasing fragmentation of lobbying is observed.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2014, 9, 1; 7-20
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Elektroniczne i klasyczne metody wewnętrznego komunikowania się w zarządzaniu bezpieczeństwem i higieną pracy
Electronic and classical communication channels in OSH management

Autorzy:

Pawłowska, Z.

Powiązania:

https://bibliotekanauki.pl/articles/180699.pdf

Data publikacji:

2015

Wydawca:

Centralny Instytut Ochrony Pracy

Tematy:

wewnętrzne komunikowanie się
elektroniczne metody komunikowania się
klasyczne metody komunikowania się
internal communication
electronic communication channels
classical communication channels

Opis:

W komunikacji wewnętrznej przedsiębiorstw coraz większą rolę odgrywają metody elektroniczne. W celu określenia, w jakim stopniu są one wykorzystywane i uznawane za przydatne w zarządzaniu bezpieczeństwem i higieną pracy przeprowadzono badania w 86 przedsiębiorstwach. Wyniki badań wykazały, że klasyczne metody przekazywania informacji na tematy bhp (na zebraniach, w formie pisemnej oraz znaków graficznych, podczas dyskusji nieformalnych) są stosowane znacznie częściej niż elektroniczne i oceniane jako skuteczniejsze. Dominują one również wśród metod nowo wprowadzanych w ciągu ostatnich 3 lat w badanych przedsiębiorstwach.
Electronic communication channels are still growing m importance m companies' internal communication. To find out how they are used in 0SH management the survey has been conducted in 86 companies. According to the results of the survey classical channels of communication (oral and written) are significantly more often used than electronic ones and assessed as more effective. They are also more frequently introduced as new channels of communication in the surveyed companies.

Źródło:

Bezpieczeństwo Pracy : nauka i praktyka; 2015, 5; 10-13
0137-7043

Pojawia się w:

Bezpieczeństwo Pracy : nauka i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

The Distribution of Useful Frequencies in Polygraph Sensor Channels

Autorzy:

White, Bruce

Powiązania:

https://bibliotekanauki.pl/articles/523266.pdf

Data publikacji:

2017

Wydawca:

Krakowska Akademia im. Andrzeja Frycza Modrzewskiego

Tematy:

polygraph sensor channels
infrared plethysmo
pneumo
electrodermal
cardio

Opis:

Purpose: to help other polygraph researchers better understand the distribution of energy across diff erent frequencies in the standard six polygraph channels in common use.Th e channels shown will be pneumo, electrodermal (Axciton), cardio cuff pressure, movement sensor, and infrared plethesmo (Axciton). In all cases we use a zero phase high pass filter with a fourth order roll off . Unless otherwise noted, all frequency traces are kept with a constant gain to show their relative energy or strength content.

Źródło:

European Polygraph; 2017, 11, 4(42); 161-166
1898-5238
2380-0550

Pojawia się w:

European Polygraph

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Calculation method for flow boiling and flow condensation of R134a and R1234yf in conventional and small diameter channels

Autorzy:

Mikielewicz, D.
Jakubowska, B.

Powiązania:

https://bibliotekanauki.pl/articles/259535.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

heat transfer coefficient
flow boiling
conventional channels
minichannels

Opis:

The paper presents the results of calculations performed using the authors’ model to predict the heat transfer coefficient during flow boiling for two refrigerants R134a and R1234yf. The experimental data from various past studies have been collected and the calculations have been conducted for the full range of quality variation and a wide range of mass velocity. The aim of the study was to test the sensitivity of the in-house flow boiling and flow condensation model. The importance of taking into account the surface tension as the parameter exhibiting its importance in case of the flow in minichannels, as well as the influence of the reduced pressure were analysed. The obtained numerical results show good consistency with those recorded in the experiments.

Źródło:

Polish Maritime Research; 2017, S 1; 141-148
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Modeling spatial aspects of mobile channel for low antenna height environments

Autorzy:

Simsim, M. T.
Khan, N. M.
Rapajic, P. B.

Powiązania:

https://bibliotekanauki.pl/articles/309429.pdf

Data publikacji:

2006

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

Gaussian distributions
geometric modeling
multi-path channels
scattering

Opis:

It is essential to have deep understanding of the mobile radio channel in particular for radio communication modeling and advanced technology system design. Models for the mobile radio channel are vital for the study of smart antenna systems, both for the design of algorithms, system-testing purposes, and for network planning. This paper provides an intensive study of the spatial characteristics of the mobile channel for low antenna height cellular environments, i.e., picocells and microcells, assuming Gaussian distributed scatterers. We investigate previous work on the angle of arrival (AoA) statistics for Gaussian distributed scatterers and make appropriate comments. Further, we employ the recently proposed eccentro-scattering physical channel model, as a generalized model, to derive the probability density function (pdf) of AoA of the multipaths at base station (BS) assuming Gaussian distributed scatterers around both BS and mobile station (MS). We found that the pdf of AoA at BS is directly affected by the standard deviation of the scatterers' density and the size of the scattering disc. The derived formulas, in closed form, can be used further for performance assessment of smart antennas and beamwidth design purposes.

Źródło:

Journal of Telecommunications and Information Technology; 2006, 2; 97-105
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

THE ROLE OF INFORMATION SYSTEMS IN LOGISTIC ENTERPRISES

Autorzy:

Parlińska, Maria
Petrovska, Iryna

Powiązania:

https://bibliotekanauki.pl/articles/452842.pdf

Data publikacji:

2013

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

wholesale market
information distribution channels
Analytical Hierarchy Process

Opis:

Well-developed information channels play very important role for the institution. In this paper had been researched the Ukrainian wholesale market for purpose to make the comparison between information distribution channels on the chosen agricultural wholesale markets in Poland and Ukraine. Also had been defined the recommendations for future development of information distribution systems for purpose to improve the market activity.

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 2; 139-147
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Large-array signal processing in long-range underwater channels: coherence effects and adaptive approach to the multimode signal control

Autorzy:

Malekhanov, A.

Powiązania:

https://bibliotekanauki.pl/articles/332804.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Akustyczne

Tematy:

signal processing
underwater channels
multimode signal control
hydroacoustics

Opis:

The signal coherence degradation in spatial domain is an intrinsic scenario for large-array signal processing if the array size is greater as compared with the coherence length. For underwater sound, study of this issue is physically motivated by the fact that the discrete spectrum signal-carrying modes lose the mutual covariance at long ranges, so the signal coherence loss at the array inputs can be considerable. This is a case of comparative study of the large-array beamformers, optimal one included, aimed at realistic estimations of the coherence-induced effects on their performance. In this paper, we address the other aspect of the problem, namely, the source array synthesis in a random-inhomogeneous multimode channel under the criteria specified for the signal processor in remote receiving array. The criteria of the output SNR and the array SNR gain are considered to be a reasonable choice. An adaptive approach to the multimode signal control by the use of vertical source array is then formulated as an iterative algorithm for the source excitations and the corresponding modal spectrum of the signal wavefield. Computer simulation is performed for the vertical source and receiving arrays operating in the shallow-water channel from the Barents Sea.

Źródło:

Hydroacoustics; 2009, 12; 141-152
1642-1817

Pojawia się w:

Hydroacoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

ANALGESIC AND ANTI-INFLAMMATORY ACTIVITY OF NEW ANALOGUES OF HC-030031: A TRPA1 CHANNEL ANTAGONIST

Autorzy:

Bryła, Adrian
Ślusarczyk, Marietta
Zygmunt, Małgorzata
Chłoń-Rzepa, Grażyna
Kazek, Grzegorz

Powiązania:

https://bibliotekanauki.pl/articles/895336.pdf

Data publikacji:

2020-02-29

Wydawca:

Polskie Towarzystwo Farmaceutyczne

Tematy:

inflammation
pain
TRPA1 channels
HC-030031 analogues

Opis:

One of our study direction is research in the group of compounds affecting the TRPA1 ion channel which can perform an important function in pain (including neuropathic pain) and inflammation for example in asthma and other chronic respiratory diseases. The aim of this study was to evaluate the analgesic and anti-inflammatory activity of two analogues of HC-030031 analogues belonging to nitrogen derivatives of heterocyclic system: xanthine (cmpd 1) and benzimidazole (cmpd 2) with hydrazide and amide moieties respectively In this paper, for two derivatives (cmpd 1 and cmpd 2) potential analgesic and anti-inflammatory/anti-edematous activities were evaluated in animal models of pain in mice (writhing response test, formalin test) and inflammation in rats (carrageenan-induced paw edema test). Both the tested compounds 1 and 2 showed a significant analgesic and anti-inflammatory activity.

Źródło:

Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 1; 113-119
0001-6837
2353-5288

Pojawia się w:

Acta Poloniae Pharmaceutica - Drug Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Shear Stress Statistics in a Compound Channel Flow

Autorzy:

Czernuszenko, W.
Rowiński, P. M.

Powiązania:

https://bibliotekanauki.pl/articles/241044.pdf

Data publikacji:

2008

Wydawca:

Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN

Tematy:

open channels
turbulence
measurements
Reynolds stresses
coherent structures

Opis:

The results of comprehensive measurements of three-dimensional turbulent velocities carried out in a laboratory compound channel are presented. Tests were performed in a two-stage channel with a smooth main channel bed consisting of concrete and rough floodplains and sloping banks. Instantaneous velocities were measured with the use of a three-component acoustic Doppler velocimeter. The main aim of the study is the recognition of structure of Reynolds stresses in turbulent open channel flows. Particular attention has been paid to bursting events such as ejections and sweeps. The bursting phenomenon occurs originally near the buffer layer and then shows a coherent or organized flow structure during its convection process. The probability density distributions of the turbulent velocities were measured at different distances from the bed in the main channel and also above the inclined walls. In the main channel, the lateral turbulent velocity is seen to follow the normal Gaussian distribution more closely than the remaining two components. Above the inclined walls, all distributions turned out to have greater skewness. The probability density distributions of correlations between velocity fluctuations were also calculated. These distributions have long tails and sharp peaks and fit the theoretical distributions very well. The structure of instantaneous Reynolds stresses was analyzed by a quadrant technique with an arbitrarily chosen threshold level. It has been shown that the largest contribution to turbulent stresses comes from the second quadrant (ejection) and the fourth quadrant (sweep). The basic temporal characteristics for quadrant events, like the average and maximum time for a zero hole size, have been determined in the study. Calculations of maximum duration times for all events reveal that times are greater for even quadrants than for odd quadrants.

Źródło:

Archives of Hydro-Engineering and Environmental Mechanics; 2008, 55, 1-2; 3-27
1231-3726

Pojawia się w:

Archives of Hydro-Engineering and Environmental Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Obecność muzyki Arvo Pärta w polskich rozgłośniach radiowych w latach 2005–2010
The Presence of Arvo Pärt’s Music on Polish Radio Stations in 2005-2010

Autorzy:

Dolewka, Marek

Powiązania:

https://bibliotekanauki.pl/articles/514134.pdf

Data publikacji:

2013-01-01

Wydawca:

Uniwersytet Jagielloński. Koło Naukowe Studentów Muzykologii UJ

Tematy:

Arvo Pärt
tintinnabuli
radio channels
Polskie Radio
reception

Opis:

The aim of this paper is to present and analyse data received from Polish Society of Authors and Composers (ZAiKS), concerning the presence of Arvo Pärt’s(b. 1935 in Paide, Estonia) works on Polish radio stations in 2005-2010. The analysis will make it possible, e.g., to select the most popular pieces by Pärt and the radio stations that broadcast them most often. In 2005-2010 Polish radio stations broadcast a total of 53 out of 115 pieces (as of 2010, source: Universal Edition) by the Estonian composer 552 times. The most frequently broadcast pieces are ones written using the tintinnabuli technique: Fratres (1977) – 88 broadcasts, Tabula rasa (1977) – 68, Festina lente (1988/1990) – 42 and Passio Domini nostri Jesu Christi secundum Joannem (1982) – 39. The leader in radio broadcasting of Pärt’s music in Poland in 2005-2010 is Polskie Radio Program II (310 out of 552 broadcasts, 56% of the whole). It is the main Polish radio channel dedicated to classical music, which makes it possible to promote Arvo Pärt’s works among numerous potential recipients. The absence of these works on RMF Classic, regional stations of Polskie Radio in Kraków and Wrocław, as well as on religious radio channels (excluding Radio eM), comes as a disappointment.

Źródło:

Kwartalnik Młodych Muzykologów UJ; 2013, 4(18); 1-16
2956-4107
2353-7094

Pojawia się w:

Kwartalnik Młodych Muzykologów UJ

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Usługi bankowe związane z transferem w obrocie prywatnym środków pieniężnych z zagranicy do Polski

Autorzy:

Poskart, Robert

Powiązania:

https://bibliotekanauki.pl/articles/951169.pdf

Data publikacji:

2013

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

economic migrants
remittances
formal channels of remittances
banking services

Opis:

This paper presents the issues related to the remittances from Polish migrants working abroad. The objective of this paper is to deepen the knowledge of formal channels of sending remittances connected to emigration from Poland with particular consideration of the presentation of banking services and costs connected to remittances to the country of origin of Polish migrants.

Źródło:

Financial Sciences. Nauki o Finansach; 2013, 1 (14); 193-203
2080-5993
2449-9811

Pojawia się w:

Financial Sciences. Nauki o Finansach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Power Allocation for Energy-Harvesting-based Fading Cognitive Multiple Access Channels : with or without Successive Interference Cancellation

Autorzy:

Li, Q.
Xu, D.

Powiązania:

https://bibliotekanauki.pl/articles/963855.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

cognitive radio
power allocation
multiple access channels
energy harvesting

Opis:

This paper considers a fading cognitive multiple access channel (CMAC), where multiple secondary users (SUs), who share the spectrum with a primary user (PU), transmit to a cognitive base station (CBS). A power station is assumed to harvest energy from the nature and then provide power to the SUs. We investigate the power allocation problems for such a CMAC to maximize the SU sum rate under the interference power constraint, the sum transmit power constraint and the peak transmit power constraint of each individual SU. In particular, two scenarios are considered: with successive interference cancellation (SIC) and without SIC. For the first scenario, the optimal power allocation algorithm is derived. For the second scenario, a heuristic algorithm is proposed. We show that the proposed algorithm with SIC outperforms the algorithm without SIC in terms of the SU sum rate, while the algorithm without SIC outperforms the algorithm with SIC in terms of the number of admitted SUs for a high sum transmit power limit and a low peak transmit power limit of each individual SU.

Źródło:

International Journal of Electronics and Telecommunications; 2017, 63, 1; 65-72
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Determinants of market margins among okra traders

Autorzy:

Onuwa, Godfrey
Obasi, Polycarp
Eze, Christopher

Powiązania:

https://bibliotekanauki.pl/articles/2141393.pdf

Data publikacji:

2022-10-10

Wydawca:

Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane

Tematy:

market channels
market margin
marketing efficiency
determinants
market constraints

Opis:

In the tropics, okra is an important vegetable crop and its production is a viable livelihood activity; however, several factors affect its marketing and margins derivable thereof. Therefore, this study analyzed the determinants of market margins among okra traders in Owerri, Imo State, Nigeria. Primary data collected via multistage sampling were analyzed using descriptive statistics, market performance and regression analysis. The results revealed that the estimated market margin and market efficiency index were ₦1900/bag (100kg) and 0.35, respectively. Channel 4 (27%) had the highest percentage of commodity sales volume. The coefficient of multiple determination (R2) was 0.826; hence, 83% variation in the market margin was accounted for by variables in the regression model. Moreover, coefficients of the variables including age (0.873), education (0.696), market experience (0.571), cost price (–0.598), quantity sold (0.576), marketing cost (–0.72) and income level (0.98) were significant determinants of okra market margins. They identified constraints affecting okra marketing in the study area. This study recommends the provision of incentives, policy adoption to mitigate income inequality and improve market performance; regulation of commodity prices, agent exploitation and marketing costs; adoption of modern communication tools and technologies, market channel diversification; provision of market infrastructures and interventions.

Źródło:

Journal of Agribusiness and Rural Development; 2022, 65, 3; 263-270
1899-5241

Pojawia się w:

Journal of Agribusiness and Rural Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Fast Data Collection in Tree-Based Wireless Sensor Networks

Autorzy:

Parashiva Murthy, B. M.
Tanuja, K.
Rakshitha, M.
Supretha, S.

Powiązania:

https://bibliotekanauki.pl/articles/1193576.pdf

Data publikacji:

2016

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Convergecast
TDMA scheduling
multiple channels
power-control
routing trees

Opis:

The below work is done to address the things like how fast can information be collected from a wireless sensor network organized as tree using realistic simulation models under the many-to-one communication paradigm known as converge cast. We first consider time scheduling on a single frequency channel with the aim of minimizing the number of time slots required to complete a converge cast. Next, we combine scheduling with transmission power control to mitigate the effects of interference, and show that while power control helps in reducing the schedule length under a single frequency, scheduling transmissions using multiple frequencies is more efficient. To this end, we construct degree-constrained spanning trees and capacitated minimal spanning trees, and show significant improvement in scheduling performance over different deployment densities. Lastly, we evaluate the impact of different interference and channel models on the schedule length.

Źródło:

World Scientific News; 2016, 41; 230-238
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

An Efficient Chaotic Interleaver for Image Transmission over IEEE 802.15.4 Zigbee Network

Autorzy:

El-Bendary, M. A. M. M.
El-Azm, A. A.

Powiązania:

https://bibliotekanauki.pl/articles/309078.pdf

Data publikacji:

2011

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

block interleaving
chaotic interleaving
convolutional interleaving
fading channels
ZigBee

Opis:

This paper studies a vital issue in wireless communications, which is the transmission of images over wireless networks. IEEE ZigBee 802.15.4 is a short-range communication standard that could be used for small distance multimedia transmissions. In fact, the ZigBee network is a wireless personal area network (WPAN), which needs a strong interleaving mechanism for protection against error bursts. Thispaper presents a novel chaotic interleaving scheme for this purpose. This scheme depends on the chaotic Baker map. A comparison study between the proposed chaotic interleaving scheme and the traditional block and convolutional interleaving schemes for image transmission over a correlated fading channel is presented. The simulation results show the superiority of the proposed chaotic interleaving scheme over the traditional schemes.

Źródło:

Journal of Telecommunications and Information Technology; 2011, 2; 67-73
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Charakterystyka wybranych zagadnień dystrybucji towarów
Characteristics of selected issues of goods distribution

Autorzy:

Góra, G.
Matuszak, Z.
Żabińska, I.

Powiązania:

https://bibliotekanauki.pl/articles/314313.pdf

Data publikacji:

2018

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

dystrybucja towarów
kanały dystrybucji
distribution of goods
distribution channels

Opis:

Scharakteryzowano podstawowe pojęcia stosowane w dystrybucji towarów. Szczególną uwagę poświecono kanałom dystrybucji dokonując ogólnej ich charakterystyki. Na przykładzie firmy IKEA ogólnie scharakteryzowano sposoby dystrybucji towarów sklepów sieci IKEA. W charakterystyce dystrybucji ograniczono się do podstawowych sposobów: OPDC (Order Point Distribution Center), QR (Quick Response) oraz Transit.
In these article authors described the concepts used in the goods distribution. Special attention was paid to distribution channels that were generally characterized. In the article, the ways of distributing goods of the IKEA chain stores were characterized in a general way. The distribution characteristics were limited to the basic methods: OPDC (Order Point Distribution Center), QR (Quick Response) and Transit

Źródło:

Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 12; 1063-1067
1509-5878
2450-7725

Pojawia się w:

Autobusy : technika, eksploatacja, systemy transportowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Rozwój rynku kanałów świadczenia usług ubezpieczeniowych. Polska na tle krajów Unii Europejskiej

Autorzy:

Przybytniowski, Jarosław W.

Powiązania:

https://bibliotekanauki.pl/articles/428761.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Komitet Nauk o Finansach PAN

Tematy:

insurance intermediary
distribution channels
insurance agents
insurance brokers
bancassurance

Źródło:

FINANSE Czasopismo Komitetu Nauk o Finansach PAN; 2014, 1(7); 171 - 197
1899-4822

Pojawia się w:

FINANSE Czasopismo Komitetu Nauk o Finansach PAN

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:

Boundary problem for equations of steady gradually varied flow in open channels

Autorzy:

Szymkiewicz, R.

Powiązania:

https://bibliotekanauki.pl/articles/241107.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN

Tematy:

differential equations
steady flow
gradually varied flow
open channels

Opis:

In this paper the problem of solution of ordinary differential equations describing a steady, gradually varied flow is discussed. It is shown that, apart from the initial problem usually solved for open channels, the formulation of the boundary problem is necessary when water levels are imposed at ends of channel. This approach is the mathematically correct formulation of the solution problem for steady, gradually varied flow equations. It enables us to determine directly the water profile and discharge for a single channel, as well as for channel network, instead of the trial and error method usually used. Moreover the formulation of boundary problem with respect to the Manning coefficient and lateral inflow is presented. To solve the listed problems the finite differences method is used.

Źródło:

Archives of Hydro-Engineering and Environmental Mechanics; 2001, 48, 4; 23-37
1231-3726

Pojawia się w:

Archives of Hydro-Engineering and Environmental Mechanics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:

New Media in Marketing Communication in Multichannel Retailing
Nowe media w komunikacji marketingowej przedsiębiorstw prowadzących sprzedaż wielokanałową

Autorzy:

Drzazga, Marek

Powiązania:

https://bibliotekanauki.pl/articles/590392.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Elektroniczne kanały dystrybucji
Handel detaliczny
Kanały dystrybucji
Komunikowanie marketingowe
Media reklamowe
Advertising media
Distribution channels
Electronic distribution channels
Marketing communication
Retail trade

Opis:

Together with the development of the Internet in the first decade of the 21st century, a growing number of retail trade companies conduct selling and distribution of their products with the help of on-line channels, which is now described as multi-channel retailing. Retail trade companies conducting multi-channel retailing make use of multichannel marketing, and also multi-channel communication with the use of the Internet. Multi-channel communication enables the application of the communications principles of relationship marketing. New instruments of communication in the Internet give trade companies new chances to succeed and have a dialogue with customers. Thanks to marketing communication the individualisation of the process of communication is possible.

Źródło:

Studia Ekonomiczne; 2014, 205; 23-33
2083-8611

Pojawia się w:

Studia Ekonomiczne

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

Rozwój średnich i małych portów morskich – wzrost znaczenia regionów nadmorskich
Development of Small and Medium-Sized Seaports – Activation as a Stimulus to Seaside Regions’ Economic Growth

Autorzy:

Jasiurska-Kluczek, Ewa
Malcharek, Rafał

Powiązania:

https://bibliotekanauki.pl/articles/416470.pdf

Data publikacji:

2019-06

Wydawca:

Najwyższa Izba Kontroli

Tematy:

seaports development
maritime transport
small and medium-sized seaports seaports' maritime infrastructure
maritime access infrastructure channels channels
depth
draught
maritime office
port authority

Opis:

Seaports are a natural link between the land and sea transportation. Their development is a prerequisite in order to, among others, provide the capacity to trans-ship the growing number of goods. Sea transportation covers altogether 75 percent of the European external trade and 37 percent of the internal trade within the European union. In Poland, there are 33 active seaports, out of which six are big ports, while 27 are medium-sized and small seaports. Over the last years, however, only big ports observe a significant growth in the volume of the goods trans-shipped there, while the role of medium-sized and small ports has been diminishing. That is why the Supreme Audit Office took a decision to examine whether and how the maritime administration, the governors of regions and the entities that manage sea ports implemented the measures set forth in seaports development plans and strategies. In their article, the authors present the details of the audit findings.

Źródło:

Kontrola Państwowa; 2019, 64, 3 (386); 65-86
0452-5027

Pojawia się w:

Kontrola Państwowa

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:

The role of formal and informal remittances as the determinants of formal and informal financial services

Autorzy:

Virak, Khiev
Bilan, Yuriy

Powiązania:

https://bibliotekanauki.pl/articles/22443153.pdf

Data publikacji:

2022

Wydawca:

Instytut Badań Gospodarczych

Tematy:

formal financial services
informal financial services
remittance channels
financial inclusion

Opis:

Research background: The choice of financial services and remittances are important as they influence the livelihood of remittance recipients, who are mostly poor and financially excluded. In literature, extensive evidence suggests a positive impact of the size of remittances on access to financial inclusion and financial development of remittance-recipient countries. However, a concern of such studies is that they might provide a biased outcome as the available data of remittances tend to be formal, whereas informal remittances are difficult to observe. Hence, their evidence might not be applicable in developing countries where remittance transfer via informal channels is very popular. Purpose of the article: The main objective of this study is to examine the effect of the remittance channel (formal and informal) on the choice of formal, informal financial services of credit and savings of remittance recipients. Methods: As our dependent variable is a financial service which is a categorical variable (formal and informal), the paper will employ a multinomial logistic regression model to estimate the impact. The data employed in this analysis is from the Finscope survey conducted in Myanmar in 2013 and 2018. Myanmar is the best context for our study, as it is one of a big migrant-sending countries and a developing country whose financial sector is significantly underdeveloped. Findings & value added: Our findings show that formal remittances promote the use of formal financial services such as credit and savings. However, there is no evidence regarding women recipients` informal channels and formal financial services. Our evidence also suggests there is a need for the government to encourage migrant workers to transform informal remittances into formal ones by removing the barriers of formal remittance channels to promote the use of formal credit and saving among remittance-recipients who are poor and financially excluded.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2022, 17, 3; 727-746
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:

Geological Controls on Evolution of Submarine Channels in Song Hong Basin, Offshore Vietnam

Autorzy:

Le, Anh Ngoc
Nguyen, Hoan Minh
Nguyen, Muoi Duy
Thi, Ngan Bui

Powiązania:

https://bibliotekanauki.pl/articles/24200703.pdf

Data publikacji:

2023

Wydawca:

Polskie Towarzystwo Przeróbki Kopalin

Tematy:

Song Hong basin
submarine channels
channel complex
3D seismic

Opis:

Song Hong basin is a very large basin with complicated onshore to offshore geological structure. The basin comprises the pre-Tertiary basement and Kainozoi sequences. This study focused on the evolution of submarine channel in Miocene sequence. The study interval is the major reservoir of the basin characterized as submarine channel complex and lower to Middle Miocene carbonates with the porosity of 15–25%. The channel is highly eroded into the substrate with c. 7 km wide and 20 km long, trending northwest-southeast. They are ‘U’ to ‘V’ shape, sub-parallel to deep faults which reactivated in the Early and Mid-Late Miocene. The channel deposit is characterized by cut and fill architecture and can be seen as high amplitude, bi-directional downlap. The channels are likely to be controlled by the two inverted phases in Late Oligocene and Middle-Late Miocene. The tectonic events are not only controls the flow directions but also modified the shape of the channels. The occurrence of well-developed submarine channel give a great hydrocarbon potential for the Song Hong basin.

Źródło:

Inżynieria Mineralna; 2023, 2; 7--12
1640-4920

Pojawia się w:

Inżynieria Mineralna

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:

A Miocene anastomosing river system in the area of Konin Lignite Mine, central Poland

Autorzy:

Widera, M.
Kowalska, E.
Fortuna, M.

Powiązania:

https://bibliotekanauki.pl/articles/191379.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Geologiczne

Tematy:

sedimentology
fluvial deposits
palaeochannel pattern
anastomosing river
sand-filled channels

Opis:

This sedimentological study of the Wielkopolska Member of the Miocene Poznań Formation in the Jóźwin IIB opencast lignite-mining field, central Poland, reveals a late mid-Miocene anastomosing fluvial system with ribbon-shaped channels filled mainly by sandy and muddy deposits. The fluvial system, extending across the eastern flank of the post-Mesozoic Kleczew Graben, was tributive in its eastern upper reaches, but was increasingly distributive and northwards deflected in its lower reaches near the graben axis. Lithofacies analysis of a representative palaeochannel indicates that the river discharge significantly fluctuated and that the channels were filled with mud-bearing stratified fine-grained sand by low-density tractional turbulent flow during the high and low water stages and with a massive mud or sandy mud by a high-density flow during the rising and falling stages. The spatial pattern of fluvial channels and deformation channel-fill sandbodies were controlled by the graben topography and the differential compaction of peat substrate, with possible influence of bedrock faults. The fluvial system is thought to have drained to an endorheic ‘terminal’ basin to the north, rather than into the hypothetical Baltic River and further westwards to the distant North Sea basin, as postulated by some previous authors. The present case study contributes to the known spectrum of anastomosing river systems as a sand- to mud-dominated end-member.

Źródło:

Annales Societatis Geologorum Poloniae; 2017, 87, 2; 157-168
0208-9068

Pojawia się w:

Annales Societatis Geologorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

The Czarny Dunajec River, Poland, as an example of human-induced development tendencies in a mountain river channel

Autorzy:

Krzemień, K.

Powiązania:

https://bibliotekanauki.pl/articles/294346.pdf

Data publikacji:

2003

Wydawca:

Stowarzyszenie Geomorfologów Polskich

Tematy:

mountain river channels
fluvial processes
human pressure
Western Carpathian Mts.

Opis:

The Czarny Dunajec is a typical river originating in high mountains (the Western Tatras). Over the entire Quaternary era the river laboured carrying material away from the Tatras and depositing it in the form of a typical braided channel at their foot. At the end of the 19'h century, river management projects and quarrying operations located directly in the very channel set off a rejuvenation process that was further accelerated at the end of 1960s. The activities resulted in the damaged several sections in their natural form and considerably deepened the channel. Measures taken to restrict the amount of material entering the Czorsztyn Dam have largely failed. From the geomorphologic and environmental points of view a continued transformation of the Czarny Dunajec river channel should be regarded as highly adverse.

Źródło:

Landform Analysis; 2003, 4; 57-64
1429-799X

Pojawia się w:

Landform Analysis

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Social Media for Corporate Brands
Media społecznościowe dla rozwoju marek korporacyjnych

Autorzy:

Palonka, Joanna
Porębska-Miąc, Teresa

Powiązania:

https://bibliotekanauki.pl/articles/586898.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Kanały informacyjne
Marka
Media społecznościowe
Brand
Communication channels
Social media

Opis:

Media społecznościowe (SM) to kanały komunikacyjne umożliwiające interakcję między internautami za pomocą różnych technologii komunikacyjnych. Media te opierają się na relacjach między różnymi podmiotami. Mogą to być relacje typu B2C, B2B, C2C, B2A itd. Obecność marek konsumenckich (B2C) w mediach społecznych jest już powszechna. Konsumenci cenią marki w SM, szczególnie na Facebooku i Twitterze, zaś firmy zbierają rzesze fanów i starają się pozyskać ich sympatię, wykorzystując gry, aplikacje czy konkursy. Zainteresowanie obecnością marek biznesowych (corporate Brand - B2B) w mediach społecznościowych nie jest jeszcze tak popularne, jak w przypadku marek konsumenckich, lecz równie ważne. Za decyzjami biznesowymi o zakupie produktów i usług stoją przecież ludzie, którzy są obecni w SM i poszukują tam informacji dotyczących produktów i usług. Wiedzę tę następnie mogą wykorzystywać jako przedsiębiorcy. Firmy obecne w SM mogą osiągać lepsze wyniki finansowe niż te, które nie korzystają z tego medium. Aby osiągnąć realną wartość biznesową, firmy muszą jednak zaplanować odpowiednią strategię działania w SM. W artykule przedstawiono możliwości, jakie oferują media społecznościowe markom biznesowym.

Źródło:

Studia Ekonomiczne; 2013, 158; 112-122
2083-8611

Pojawia się w:

Studia Ekonomiczne

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:

Secrecy Rate Region Enhancement in Multiple Access Wiretap Channel

Autorzy:

Shah, Shahid Mehraj

Powiązania:

https://bibliotekanauki.pl/articles/2142307.pdf

Data publikacji:

2022

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

multiple access channels
physical layer security
strong secrecy
wiretap channel

Opis:

It is commonly known that physical layer security is achieved with a trade-off in terms of the achievable rate. Hence, security constraints generate rate losses in wiretap channels. To mitigate such rate losses in multi-user channels, we propose a coding/decoding scheme for multi-user multiple access wiretap channel (MAC-WT), where previously transmitted messages are used as a secret key to enhance the secrecy rates of the transmitting users, until the usual Shannon capacity region of a multiple access channel (MAC) is achieved without the secrecy constraint. With this coding scheme, all messages transmitted in the recent past are secure with respect to all the information of the eavesdropper till now. To achieve this goal, we introduce secret key buffers at both the users and the legitimate receiver. Finally, we consider a fading MAC-WT and show that with this coding/decoding scheme, we can achieve the capacity region of a fading MAC channel (in the ergodic sense).

Źródło:

Journal of Telecommunications and Information Technology; 2022, 2; 14--25
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Ślady aktywności inżynierskiej Mateusza Butrymowicza. Część 1 – Kanał Telechański na tle epoki rozbiorowej
Traces of Mateusz Butrymowicz engineering activities. Part 1: Telechany chanel in the era of partition

Autorzy:

Krych, A.

Powiązania:

https://bibliotekanauki.pl/articles/193129.pdf

Data publikacji:

2017

Wydawca:

Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej

Tematy:

budownictwo wodne
kanały rzeczne
Butrymowicz Mateusz
water construction
river channels

Opis:

Początek drugiej połowy XVIII wyznaczył stuletni okres dominacji budownictwa kanałowego w rozwoju transportu, znacznie przyczyniając się do przemysłowej rewolucji i współczesnego kształtu świata zachodniego. W kulturze materialnej wyznaczył też początek nowożytnej inżynierii cywilnej. Wielu budowniczych kanałów podjęło dalsze wyzwania inicjując w kolejnym stuleciu etap dominacji transportu kolejowego. W tych samych latach kiedy Francis Egerton, Trzeci Książę Bridgewater, z Jamesem Brindleyem zbudowali kanał do Manchester, rozpętując w Anglii manię kanałową (1761) i kiedy zegarmistrz Francois Zacharia samotnie uporał się z problemami koncesji, rozpoczynając pracę przy francuskim kanale „dwóch mórz” (1763), Wielki Książę Litewski, wojewoda wileński Michał Kazimierz Ogiński w 1765 roku podjął się patronatu nad budową 50-kilometrowego Kanału Telechańskiego (dzisiaj Ogińskiego, Aginskiego) na Polesiu. Roli Wielkiego Brindleya w tym przypadku podjął się oficjalista Księcia, Mateusz Butrymowicz. Do 1788 roku budował na poleskich bagnach groble i drogi, a na bagnistych terenach zalewowych stworzył folwark o oryginalnej strukturze agrarnej i logistycznej. Odznaczył się ożywioną aktywnością parlamentarną na rzecz reform gospodarczych, finansów oraz budowy infrastruktury transportowej. Okres kolejnych wojen i upadku Rzeczypospolitej Obojga Narodów na przełomie wieków doprowadziły do zniszczenia materialnych śladów jego działalności. W artykule przedstawia się rezultat studiów oraz hipotezy dotyczące ich kształtu, lokalizacji oraz metod i technologii budowy.
The beginning of the second half of the 18th century was the onset of a hundred-year-long era in the development of transportation dominated by canal construction, which contributed to industrial revolution and the contemporary structure of the western world. In the sphere of material culture it was also the formative time of the modern civil engineering. In the subsequent century many constructors took the challenge and initiated the stage of railroad transport domination. At the time when Francis Egerton, the 3rd Duke of Bridgewater, together with James Brindley constructed the canal to Manchester (the Bridgewater Canal), thus unleashing a real ‘canal-mania’ in England (1761), and when the watchmaker Francois Zacharia alone overcame the concession problems and embarked on drilling the ‘Two-Seas Canal’ (1763), Michał Kazimierz Ogiński, the Grand Duke of Lithuania and the Voivode of Vilnius, in 1765 took the patronage over the construction of a 50-kilometre Telechany Canal (today known as the Oginski Canal) in the Polesie region. The role of ‘Great Brindley’ was played by one of the Grand Duke’s officials – Mateusz Butrymowicz. Up until 1788 he went on constructing the roads and causeways across the Polesie swamps, and in the marshy floodplains he created a farm of a very original agrarian and logistic structure. He distinguished himself as a very active member of parliament vouching for economic and financial reforms as well as for the construction of transportation infrastructure. Due to the subsequent wars and the fall of the Republic of Both Nations (the Polish–Lithuanian Commonwealth) at the turn of the 18th and 19th century, the traces of his material activity have been wasted. This article presents results of research and the hypotheses concerning the form, location, methods and technologies used in his constructions.

Źródło:

Transport Miejski i Regionalny; 2017, 5; 24-32
1732-5153

Pojawia się w:

Transport Miejski i Regionalny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Investigation of the Non-Thermal Plasma-Based Advanced Oxidation Process for Removal of Organic Contaminants In Azo Dyes Solution

Autorzy:

Kasih, T. P.

Powiązania:

https://bibliotekanauki.pl/articles/123355.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

plasma-AOPs
organic waste treatment
submerged plasma channels
dye decoloration

Opis:

The present study deals with the development of non-thermal plasma-based AOPs for removal of organic contaminants in wastewater treatment. The plasma itself is generated based on point-to-point geometry under organic solution and can generate hydroxyl radicals, ozone, peroxide and other radicals as the basic species to destruct organic contaminants. Electrical diagnostic in a form of voltage and current waveform was investigated through the variation of time during the formation of plasma channeling. The evolutions of plasma channeling with its physical phenomena were also discussed. The relationship between the electrodes distance towards applied voltage to sustain the plasma were also studied. It was found that the mineralization occurred during plasma treatment to transform the harmful functional group in organic dye solution into harmless species. Simultaneously, the decoloration process by using this submerged plasma treatment system is able to change the orange color of methyl orange solution into clearly transparent water in 30 minutes. The present findings may provide the plasma-based advanced oxidation process as a promising chemical-free and cost competitive AOP process application on specially the waste water treatment in textile industry.

Źródło:

Journal of Ecological Engineering; 2017, 18, 2; 1-6
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

FOOD RETAILING TRANSFORMATION IN POLAND IN YEARS 1990-2006

Autorzy:

Reysowski, Marek

Powiązania:

https://bibliotekanauki.pl/articles/450534.pdf

Data publikacji:

2008

Wydawca:

Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego

Tematy:

Keywords: Retailing
Distribution Channels
Grocery Stores
Hypermarkets
Supermarkets
Discount Stores

Opis:

In the nineties of the 20th c. key changes took place in the distribution of fast moving consumer goods (FMCG) in Poland. There was a sharp rise in the number of retail outlets, including grocery stores. Completely new food distribution channels appeared in Polish realities. Among them hypermarkets and discount stores are to be named. These two formats of shops, controlled by foreign chains, have completely changed the image of FMCG distribution in Poland. Supermarkets have also built up their position. It is the only format included in modern distribution channel, where the domestic capital holds a fairly strong position. Despite the lowering significance of the so-called traditional distribution channel of food, its share still exceeds 50%. It is an exceptional phenomenon not only in the developed West European states but also in the majority of Central European countries.

Źródło:

International Journal of Emerging and Transition Economies (IJETE); 2008, 1, 1; 77-91
1308-2701

Pojawia się w:

International Journal of Emerging and Transition Economies (IJETE)

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Pomiary w sieciach Wi-Fi
Measurements on Wi-Fi Networks

Autorzy:

Masiukiewicz, Antoni
Szaleniec, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/509480.pdf

Data publikacji:

2014

Wydawca:

Akademia Finansów i Biznesu Vistula

Tematy:

802.11
przepływność
kanały transmisyjne
interferencje
throughput
transmission channels
interferences

Opis:

Sieci pracujące w standardzie 802.11, obok komórkowych, są obecnie najbardziej rozpowszechnionymi sieciami wykorzystującymi technologie bezprzewodowe. Ich popularność wynika z łatwej konfiguracji stanowisk ponieważ nie ma potrzeby układania okablowania, niskiej ceny urządzeń i pasm częstotliwości dostępnych dla wszystkich. Popularność skutkuje rosnącą liczbą sieci prywatnych i domowych, w których brak jest zarządzania zasobami częstotliwości. Prowadzi to w konsekwencji do wzajemnego zakłócania się sieci w standardzie 802.11 szczególnie w miejscach, w których występuje ich duże zagęszczenie. Większa świadomość użytkowników może pomóc w lepszym doborze lokalizacji urządzeń i właściwej selekcji kanałów wykorzystywanych do komunikacji.
The networks operating in the 802.11 standard, besides the mobile phone networks, are now the most frequent networks exploiting wireless technologies. Their popularity issues from an easy configuration of stations as there is no need to cable laying, low price of equipment and frequency bands accessible to all. The popularity leads to a growing number of private and home networks where there is no frequency resource management. In result, it leads to mutual interference of networks in the 802.11 standard, particularly in the places where there is high density thereof. Greater awareness of users may help in a better selection of location of equipment and a proper selection of the channels used for communication.

Źródło:

Zeszyty Naukowe Uczelni Vistula; 2014, 38/2014 Informatyka; 65-78
2353-2688

Pojawia się w:

Zeszyty Naukowe Uczelni Vistula

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Landform recognition in granite mountains in East Asia (Seoraksan, Republic of Korea, and Huangshan and Sanqingshan, China) – a contribution of geomorphology to the UNESCO World Heritage

Autorzy:

Migoń, Piotr
Woo, Kyung-Sik
Kasprzak, Marek

Powiązania:

https://bibliotekanauki.pl/articles/1051557.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

granite geomorphology
rock control
mass movements
bedrock channels
World Heritage

Opis:

Applied research in geomorphology includes landform analysis and evaluation from a specific perspective of scientific significance and global relevance. In this paper, landform diversity of Seoraksan, Republic of Korea, a UNESCO World Heritage candidate, is compared with geomorphic characteristics of two World Heritage properties in China, Huangshan and Sanqingshan. Seoraksan represents an almost complete mountain geomorphic system of considerable contemporary dynamics, with outstanding scenery and spectacular landforms such as domes, fins, bedrock channels, waterfalls, and inherited block fields. It is argued that Seoraksan contains outstanding scientific and aesthetic values, not present at the Chinese properties, offering scope for successful nomination.

Źródło:

Quaestiones Geographicae; 2018, 37, 1; 103-115
0137-477X
2081-6383

Pojawia się w:

Quaestiones Geographicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Business communication in Poland: sale promotion, advertising, public relations and virtual communication

Autorzy:

Lewicka, Hanna

Powiązania:

https://bibliotekanauki.pl/articles/1195225.pdf

Data publikacji:

2015

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

Polska
communication
business
channels
advertising
public relations
customers
social media

Opis:

Business communication is a key activity for every business, as every business has to deal with its external and internal environment. It describes many business activities and can be taken under consideration from different perspectives, but still the basic communication activities can consider any company in the world. However, the cultural aspect determines the realization of every activity. In different countries the way a business communicates with customers, or business actors do it within the company, differs respectively to national traditions, values and beliefs. The aim of the following article is to present, analyse and explain the way of business communication in Poland. As every country, it has a specific characteristics that is distinctive only for its own, which deeply affects various aspects of business communication. The typical and mainstream ways of realizing the activities in the country will be presented including advertising practice and media regulations which also affect this area of communication. The article will focus on the external communication in Poland, taking under consideration four areas: sale promotion, advertising, public relations and virtual communication. The analysis will start from short elaboration of what the essence of business communication is and the current country characteristics in terms of economy. The article will form a useful material for foreign studies purposes and may also be helpful in further comparisons with other countries.

Źródło:

Społeczeństwo i Ekonomia; 2015, 2(4); 67-84
2353-8937

Pojawia się w:

Społeczeństwo i Ekonomia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Blind Estimation of Linear and Nonlinear Sparse Channels

Autorzy:

Georgoulakis, K.

Powiązania:

https://bibliotekanauki.pl/articles/307846.pdf

Data publikacji:

2013

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

blind estimation and equalization
clustering techniques
sparse zero pad channels

Opis:

This paper presents a Clustering Based Blind Channel Estimator for a special case of sparse channels - the zero pad channels. The proposed algorithm uses an unsupervised clustering technique for the estimation of data clusters. Clusters labelling is performed by a Hidden Markov Model of the observation sequence appropriately modified to exploit channel sparsity. The algorithm achieves a substantial complexity reduction compared to the fully evaluated technique. The proposed algorithm is used in conjunction with a Parallel Trellis Viterbi Algorithm for data detection and simulation results show that the overall scheme exhibits the reduced complexity benefits without performance reduction.

Źródło:

Journal of Telecommunications and Information Technology; 2013, 1; 65-71
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

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