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Abstrakt

Jednym z fundamentalnych problemów w naukach o ewolucji jest kierunek ewolucji na różnych poziomach organizacji materii. Zgodnie z tradycyjnymi interpretacjami teleologicznymi, ewoluujące układy powinny rozwijać się ku stanowi ostatecznemu – celowi. Jednak w większości przypadków taki cel jest nieokreślony; uczeni go nie znają. Jednak mogą oni odkryć ogólna tendencję lub serię zmian w czasie – teleonomię lub kierunkowość opartą głównie na wewnętrznym wzorcu ewoluującego układu, jednak modyfikowaną także przez oddziaływania z zewnątrz. Procesy teleonomiczne są odpowiedzialne za wszystkie procesy ewolucyjne włączając w to przejścia z jednego układu organizacji do innego.

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Autorzy i Afiliacje

Leszek Żuk

Abstrakt

This commentary on the Court of Justice’s ruling in the Pawlak case concentrates on questions of the judicial application of EU law, in particular EU Directives. On the basis of the recent jurisprudence of the Court the authors present three issues: 1) the incidental effects of EU law for the procedural provisions of Member States; 2) the inability to rely on an EU directive by a member state’s authority in order to exclude the application of national provisions which are contrary to a directive; 3) the limits of the duty to interpret national law in conformity with EU law from the perspective of the Court of Justice and the referring court. Further, the article presents the judicial practice of the Polish Supreme Court, and in particular the follow-up decision of this Court not only taking into the account the ruling of the ECJ but also showing how the limitation of a conforming interpretation can be overcome in order to give full effect to EU law. In the authors’ view, this case is worth noting as an example of judicial dialogue in the EU.

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Autorzy i Afiliacje

Dawid Miąsik
Monika Szwarc
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Abstrakt

The article is devoted to some critical problems of using Bayesian networks for solving practical problems, in which graph models contain directed cycles. The strict requirement of the acyclicity of the directed graph representing the Bayesian network does not allow to efficiently solve most of the problems that contain directed cycles. The modern theory of Bayesian networks prohibits the use of directed cycles. The requirement of acyclicity of the graph can significantly simplify the general theory of Bayesian networks, significantly simplify the development of algorithms and their implementation in program code for calculations in Bayesian networks..
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Bibliografia

[1] A. Nafalski and A.P. Wibawa, “Machine translation with javanese speech levels’ classification,” Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, vol. 6, no 1, pp 21-25, 2016. https://doi.org/10.5604/20830157.1194260
[2] Z.Omiotek and P. Prokop, “The construction of the feature vector in the diagnosis of sarcoidosis based on the fractal analysis of CT chest images,” Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, vol. 9, no. 2, pp. 16-23, 2019. https://doi.org/10.5604/01.3001.0013.2541
[3] A. Litvinenko, O. Mamyrbayev, N. Litvinenko, A. Shayakhmetova, “Application of Bayesian networks for estimation of individual psychological characteristics,” Przeglad Elektrotechniczny, vol. 95, no. 5, pp. 92-97, 2019
[4] X.Q. Cai, X.Y. Wu, X. Zhou, “Stochastic scheduling subject to breakdown-repeat breakdowns with incomplete information,” Operations Research, vol. 57, no. 5, pp. 1236–1249, 2009. doi: 10.1287/opre.1080.0660
[5] K.W. Fornalski, “The Tadpole Bayesian Model for Detecting Trend Changes in Financial Quotations,” R&R Journal of Statistics and Mathematical Sciences, vol. 2, no. 1, pp. 117–122, 2016.
[6] J. Pearl “Artificial Intelligence Applications”, in How to Do with Probabilities what people say you can't,/ Editor Weisbin C.R., IEEE, North Holland, pp. 6–12, 1985.
[7] J. Pearl “Probabilistic Reasoning in Intelligent Systems”. San Francisco: Morgan Kaufmann Publishers, 1988,
[8] A. Tulupiev “Algebraic Bayesian networks,” in “Logical-probabilistic approach to modeling knowledge bases with uncertainty,” SPb.: SPIIRAS, 2000.
[9] S. Nikolenko, A. Tulupiev “The simplest cycles in Bayesian networks: Probability distribution and the possibility of its contradictory assignment,” SPIIRAS. Edition 2, 2004. vol.1.
[10] F.V. Jensen, T.D. Nielsen “Bayesian Networks and Decision Graphs,” Springer, 2007.
[11] D. Barber, “Bayesian Reasoning and Machine Learning,” 2017, 686 p. http://web4.cs.ucl.ac.uk/ staff/D.Barber/ textbook/020217.pdf
[12] R.E. Neapolitan “Learning Bayesian Networks,” 704p. http://www.cs.technion.ac.il/~dang/books/Learning%20Bayesian%20Networks(Neapolitan,%20Richard).pdf
[13] O. Mamyrbayev, M. Turdalyuly, N. Mekebayev, and et al. “Continuous speech recognition of kazakh language», AMCSE 2018 Int. conf. On Applied Mathematics, Computational Science and Systems Engineering, Rom, Italy, 2019, vol. 24, pp. 1-6.
[14] A. Litvinenko, N. Litvinenko, O. Mamyrbayev, A. Shayakhmetova, M. Turdalyuly “Clusterization by the K-means method when K is unknown,” Inter. Conf. Applied Mathematics, Computational Science and Systems Engineering. Rome, Italy, 2019, vol. 24, pp. 1-6.
[15] O.Ore “Graph theory,” Мoscow: Science, 1980, 336 p.
[16] Ph. Kharari “Graph theory,” Мoscow: Mir, 1973, 300 p.
[17] V. Gmurman “Theory of Probability and Mathematical Statistics: Tutorial,” Moscow: 2003, 479 p.
[18] A.N. Kolmogorov “Theory: Manual,” in “Basic Concepts of Probability,” Moscow: Science, 1974.
[19] N. Litvinenko, A. Litvinenko, O. Mamyrbayev, A. Shayakhmetova “Work with Bayesian Networks in BAYESIALAB,” Almaty: IPIC, 2018, 311 p. (in Rus). ISBN 978-601-332-206-3.

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Autorzy i Afiliacje

Assem Shayakhmetova
1 2
Natalya Litvinenko
3
Orken Mamyrbayev
1
Waldemar Wójcik
4 5
Dusmat Zhamangarin
6

  1. Institute of Information and Computational Technology, 050010 Almaty, Kazakhstan
  2. Al-Farabi Kazakh National University, Almaty, Kazakhstan
  3. Information and Computational Technology, 050010 Almaty, Kazakhstan
  4. Institute of Information and Computational Technologies CS MES RK, Almaty
  5. Lublin Technical University, Poland
  6. Kazakh University Ways of Communications, Kazakhstan

Abstrakt

The study of emotion regulation constitutes a major area of research for having a complete picture of human emotional experience, and several lines of evidence claim that poor emotion regulation skills are particularly deleterious in different aspects of life. Previous tDCS studies have suggested the beneficial role of DLPFC stimulation to improve emotion processing and regulation. The present study was therefore conducted to confirm and extend the effects of DLPFC stimulation on emotion regulation by including both positive and negative emotional material. In this between subjects study, participants were randomly assigned to receive active or sham stimulation over the left DLPFC. Participants viewed negative, positive, and neutral pictures while attempting to decrease, increase, or not modulate their emotional reactions. Subjective reactions were assessed via on-line ratings. The main results show that anodal tDCS stimulation over the left DLPFC slightly improves the ability to increase emotion perception for positive emotions. More interestingly, the results demonstrate that tDCS enhances the regulation of both positive and negative emotions when the baseline is considered. This study provides additional data on the use of tDCS as a tool to increase emotion regulation not only for negative affective material, but also for positive ones.

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Autorzy i Afiliacje

Michel Hansenne
Emilie Weets

Abstrakt

Scaffolding is equipment usually used at construction sites. A scaffolding structure is lightweight and made of elements used many times. The characteristics of scaffolding make it susceptible to dynamic actions present at the structure or occurring nearby. A scaffolding structure of medium size was subjected to analysis in this paper. The structure FEM model was loaded with single force harmonic excitation with various frequencies ranging from 1 Hz to 12 Hz applied in one of many selected points on the scaffolding façade. In the first step, natural frequencies and mode shapes of the analyzed structure were calculated. Then the full dynamic analysis was carried out to obtain maximum displacements of selected control points. The relation of excitation force frequency and location to the amplitudes of generated displacement was observed. It was found that low excitation frequencies close to the natural frequencies of the structure produced vibrations ranging to large areas of the scaffolding surface. Higher excitation frequencies are usually less propagated at the scaffolding but still may produce some discomfort to the structure users in the vicinity of the excitation force location. Scaffolding is equipment usually used at construction sites. A scaffolding structure is lightweight and made of elements used many times. The characteristics of scaffolding make it susceptible to dynamic actions present at the structure or occurring nearby. A scaffolding structure of medium size was subjected to analysis in this paper. The structure FEM model was loaded with single force harmonic excitation with various frequencies ranging from 1 Hz to 12 Hz applied in one of many selected points on the scaffolding façade. In the first step, natural frequencies and mode shapes of the analyzed structure were calculated. Then the full dynamic analysis was carried out to obtain maximum displacements of selected control points. The relation of excitation force frequency and location to the amplitudes of generated displacement was observed. It was found that low excitation frequencies close to the natural frequencies of the structure produced vibrations ranging to large areas of the scaffolding surface. Higher excitation frequencies are usually less propagated at the scaffolding but still may produce some discomfort to the structure users in the vicinity of the excitation force location.
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Autorzy i Afiliacje

Jarosław Bęc
1
ORCID: ORCID
Ewa Błazik-Borowa
1
ORCID: ORCID
Jacek Szer
2
ORCID: ORCID

  1. Faculty of Civil Engineering and Architecture, Lublin University of Technology, Poland
  2. Faculty of Civil Engineering, Architecture and Environmental Engineering, Lodz University of Technology, Poland

Abstrakt

The paper presents and discusses a method of azimuth determination of ultrasonic echo arrival in air. The basis of the presented approach is the assumption that the received signal is a narrowband one. In this way, the direction of the signal arrival can be determined based on its phase shift using two receivers. When the distance between the receivers exceeds half of the wavelength of the received signal, a problem of ambiguity in determining the angle of arrival arises. To solve this, a method using multiple pairs of receivers was used. Its robustness and temperature dependence is analysed. The most important advantages of the presented approach are simplified computations and low hardware requirements. Experimental data made it possible to show that for strong echoes, the accuracy is higher than 0.5X. In the case of weak echos, it is reduced to about 2X. Because the method is based on phase shift measurement, the ultrasonic sonar that uses this method can be compact in size. Moreover, owing to the theoretical analysis, certain properties of the mutual location of the receivers were found and formally proved. They are crucial for determining proper receivers’ inter-distances.

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Autorzy i Afiliacje

Bogdan Kreczmer
ORCID: ORCID

Abstrakt

Amendment of potato-dextrose agar with grapefruit extract at dose 40μg/cm3 inhibited linear growth of Phytophthora cryptogea about 50%. At such concentration of the product in soil leachate formation of zoosporangia was inhibited about 95%. Application of grapefruit extract as peat drench reduced population density of the pathogen about 80% and this high activity was observed at least 30 days.
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Autorzy i Afiliacje

Leszek B. Orlikowski

Abstrakt

Obervations of wind directions and air temperatures in Hornsund, Spitsbergen, in 1978—1985 were used to compute frequency distribution of wind directions and mean air temperatures at particular wind directions. Prevailing easterly winds (60°, 90° and 120°) resulted in lower air temperatures (to —2.2°C) than winter and spring means and in higher (nearly 1°C) than summer and autumn mean temperatures. Greatest positive deviations from mean seasonal temperatures are observed in winter at southerly and southwesterly winds and reach 10°C. Greatest negative deviations from mean seasonal temperatures are noted at northerly winds (330° and 360°) in autumn and reach —3.7°C.

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Autorzy i Afiliacje

Danuta Wielbińska
Ewa Skrzypczak

Abstrakt

Given that a source is located underground and detected by sounds that cannot be completely known or predicted, every stage of the operation from grade changes to product sales exhibits uncertainties. Parameters and constraints used in mining optimizations (sales price, costs, efficiency, etc.) comprise uncertainties. In this research, chrome open-pit resource optimization activities were performed in the province of Adana, Turkey. Metallurgical recovery, which is considered a constant as an optimization parameter in mining software, has been optimized as a variable based on fixed and variable values related to the waste material grade of processing. Based on scenario number 7, which yields the highest net present value in both optimizations, this difference corresponds with an additional $1.4 million, i.e., 7% minimum. When the number of products sold were compared, a difference of 25,977 tons of concentrate production was noted (Optimization II produces less than Optimization I). In summary, concentrated efficiency and economic findings show that using variable metallurgical recovery parameters in NPV estimation improves optimization success by reducing the level of uncertainty.
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Autorzy i Afiliacje

Furkan K. Kasa
1
ORCID: ORCID
Ahmet Dağ
1
ORCID: ORCID

  1. Çukurova University, Department of Mining Engineering, Adana, Turkey

Abstrakt

The paper presents selected results of KOBO extrusion process of circular profile ϕ10 mm from aluminum alloy 2099. The main aim of the performed research was to determine the influence of the oscillation frequency of a die on the magnitude of extrusion force. During the process such parameters, as extrusion force, rate of stem and frequency of die oscillation were recorded; oscillating angle of a die was constant and equal ±8°. The die oscillation frequency was changeable in performed tests in the range of 2 ÷ 7 Hz. The obtained results allowed to determine the relation between the maximum extrusion force and the die oscillation frequency during extrusion of aluminum 2099 alloy.

The paper focuses on the experimental analysis of mechanical characteristics of the KOBO process. Basing on the recorded force versus stem position, three stages of KOBO extrusion process were determined, i.e. initialization, stabilization and uniform extrusion. Points separating these stages are two inflection points of recorded diagram. The analysis of each stage was made basing on the results of force diagrams and literature data.

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Autorzy i Afiliacje

T. Balawender
ORCID: ORCID
M. Zwolak
ORCID: ORCID
Ł. Bąk

Abstrakt

Złoże węgla brunatnego Bełchatów położone jest w centralnej Polsce w rowie tektonicznym Kleszczowa. Jest podzielone na szereg części, którym odpowiadają pola górnicze: Kamieńsk (wschodnia część złoża), Bełchatów (centralna część złoża) i Szczerców (zachodnia część złoża). Obszarem prezentowanych badań było pole Bełchatów. Przedmiotem badań była zależność lokalnej, regionalnej i generalnej, horyzontalnej zmienności wybranych parametrów technologiczno-chemicznych węgla w stanie roboczym (wilgoci całkowitej, zawartości popiołu i zawartości siarki całkowitej), w funkcji kierunku obserwacji. Zastosowano geostatystyczny opis zmienności parametrów złożowych za pomocą semiwariogramów.

Badania, które były prowadzone w różnych skalach obserwacji (od zmienności lokalnej w obrębie tzw. pola doświadczalnego o rozmiarach 8 x 8 m, w wydzielonych większych jednorodnych częściach pola Bełchatów - tzw. obszarach, aż po analizy generalne w skali całego pola górniczego). Wykazały one istnienie wyraźnej anizotropii zmienności parametrów węgla. Struktura anizotropii obserwowana w skalach regionalnej i globalnej nawiązuje do przebiegu struktury bełchatowskiej. Szczegółowe badania wskazują na zróżnicowany poziom anizotropii obserwowany w różnych obszarach pola Bełchatów. Nie udało się udowodnić zależności zmienności poziomu anizotropii zawartości popiołu i siarki całkowitej od środowisk sedymentacji pokładu głównego węgla w różnych częściach pola Bełchatów. Oba badane parametry cechują się silnym bądź średnim poziomem anizotropii w badanych obszarach. Anizotropia ujawnia się także w skali lokalnej. Badania wykazały, że w skali regionalnej przeważa anizotropia typu zonalnego. W skali całego złoża, zawartość siarki całkowitej wykazywała anizotropię typu zonalnego, a zawartość popiołu - typu geometrycznego.

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Autorzy i Afiliacje

Tomasz Bartuś

Abstrakt

In the present study, a suitable composition of parameters has been obtained to provide an efficient process of cooling flue gas with complete condensation of water vapour from air-water vapour mixture on a water film in co-current upward flow in the tube of the direct contact heat and mass exchanger. The results showed that the value of the irrigation density depends on the velocity of the air-water vapour mixture and the initial vapour content and should be calculated from an empirical equation. The active pipe height depends on the velocity of the air-water vapour mixture and the initial vapour content and should also be calculated from an empirical equation. For example, if the initial vapour content of the air-water vapour mixture is 11%, the velocity of the mixture is 20.8 m/s the height of the channel should not exceed 0.460 m. The value of the water heating limit temperature increases from 46◦C to 62◦C with a change in the initial vapour content from 11% to 30%. The present experimental results could be helpful in the design of direct contact heat and mass exchangers for waste heat recovery.
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Autorzy i Afiliacje

Iryna Nazarova
1
Artur Gutkowski
1

  1. Lodz University of Technology, Institute of Turbomachinery, Wolczanska 217/221, 93-005 Lodz, Poland

Abstrakt

In order to maintain and improve water quality, man has an increasing need to understand the relations among basin land use and in stream water quality. Being concerned about quality and quantity status of European waters European Union has adopted Water Framework Directive (2000/60/EU). The process of pressure and impact analyses and water status assessment is termed, in short, as “first characterisation” of water bodies. In accordance to WFD programmes of measures have to be developed by 2009. In WFD programmes existing measures for water protection directed by other EU directives such are Nitrate, Urban Waste Water, Dangerous Substances and IPPC will be further developed and new added. In the paper, we describe the first characterisation of the Slovene waters and show cross compliance of the Nitrate and Water Framework Directives in Slovenia

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Autorzy i Afiliacje

Marina Pintar
Lidija Globevnik
Urška Bremec

Abstrakt

This article concerns constitutional problems related to the implementation of EU directives seen from both the legal and comparative perspectives. The directives are a source of law which share a number of characteristic features that significantly affect and determine the specificity of Member States’ constitutional review of the directives as well as the legal acts that implement them. The review of the constitutionality of EU directives is carried out in accordance with the provisions of national implementing acts. Member States’ constitutional courts adopt two basic positions in this respect. The first position (adopted by, inter alia, the French Constitutional Council and German Federal Constitutional Court) is based on the assumption of a partial “constitutional immunity” of the act implementing the directive, which results in only a partial control of the constitutionality of the implementing acts, i.e. the acts of national law implementing such directives. The second position, (adopted, explicitly or implicitly by, inter alia, the Austrian Federal Constitutional Court, Czech Constitutional Court, Polish Constitutional Court, Romanian Constitutional Court and Slovak Constitutional Court) concerns the admissibility of a full review of the implementing acts. This leads to the admissibility of an indirect review of the content of the directive if the Court examines the provision as identical in terms of content with an act of EU law. Another issue is related to the application of the EU directives as indirect yardsticks of review. The French Constitutional Council case-law on review of the proper implementation of EU directives represents the canon in this regard. Nonetheless, interesting case studies of further uses of EU directives as indirect yardsticks of review can be found in the case law of other constitutional courts, such as the Belgian Constitutional Court or Spanish Constitutional Court. The research presented in this paper is based on the comparative method. The scope of the analysis covers case law of the constitutional courts of both old and new Member States. It also includes a presentation of recent jurisprudential developments, focusing on the constitutional case-law regarding the Data Retention Directive and the Directive on Combating Terrorism.

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Autorzy i Afiliacje

Aleksandra Kustra-Rogatka

Abstrakt

In EU law a lot of attention has recently been paid to personal data protection standards. In parallel to the development of the general EU rules on data protection, the Members States also develop cooperation between law enforcement agencies and create new information exchange possibilities, including the processing of personal data of participants in criminal proceedings. The aim of this article is to analyse whether the personal data of victims of crime are safeguarded according to the standards of the Charter of Fundamental Rights. For this purpose, the author analyses two directives: 2012/29/EU, which regulates minimum standards of victims of crime; and 2016/680/EU (also known as the Law Enforcement Directive), which regulates personal data processing for the purpose of combating crime. Based on the example of the Polish legislation implementing both directives, the author comes to the conclusion that the EU legislation is not fully coherent and leaves too much margin of appreciation to the national legislator. This results in a failure to achieve the basic goals of both directives. The author expects the necessary reflection not only from the national legislator, but also from the European Commission, which should check the correctness of the implementation of the directives, as well as from national courts, which should use all possible measures to ensure that the national law is interpreted in the light of the objectives of the directives.

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Autorzy i Afiliacje

Agnieszka Grzelak

Abstrakt

In this study, effects of political stability, economic freedom and trade freedom of above-stated Fragile Five Countries consisting of Brazil, Indonesia,India, Turkey, and South Africa on the performance of FDI appeal was analyzed with first generation panel data analysis method for the 1996-2017 period. The cointegration analysis between series was conducted by means of Kao (1999) and Pedroni (2004) test. The analyses showed that political stability and trade freedom have a significant positive coefficient on the Fragile Five Countries’FDI. It was also determined that the impact of economic freedom on FDI was statistically insignificant. Thus, it was concluded that the most important determinant of FDI entry into countries is political stability. Error correction mechanisms of models have been working well. In addition, it was found that political stability, economic freedom, and trade freedom are the cause of foreign direct investment in the long-run.

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Autorzy i Afiliacje

Tuğba Akın
Pobierz PDF Pobierz RIS Pobierz Bibtex

Abstrakt

The aim of the study was to assess the possibility of using natural carbonaceous materials such aspeat, lignite, and hard coal as low-cost sorbents for the removal of Direct Orange 26 azo dye from an aqueous solution. The adsorption kinetics and the influence of experimental conditions were investigated. The following materials were used in the research: azo dye Direct Orange 26, Spill-Sorb “Fison” peat (Alberta, Canada), lignite (Bełchatów, Poland), and hard coal (“Zofiówka” mine, Poland). The morphology and porous structure of the absorbents were tested. Dye sorption was carried out under static conditions, with different doses of sorbents, pH of the solution, and ionic strength. It was observed that the adsorption of Direct Orange 26 dye on all three adsorbents was strongly dependent on the pH of the solution, while the ionic strength of the solution did not affect the adsorption efficiency. The adsorption kinetics were consistent with the pseudo-second-order reaction model. The stage which determines the rate of adsorption is the diffusion of the dye in the near-surface layer. The process of equilibrium adsorption of Direct Orange 26 dye on all tested adsorbents is best described by the Langmuir isotherm. The maximum adsorption capacity for peat, brown coal and hard coal was 17.7, 15.1 and 13.8 mg/g, respectively. The results indicate that peat, lignite, and hard coal can be considered as alternative adsorbents for removing azo dyes from aqueous solutions.
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Bibliografia

  1. Al-Ghouti, M.A. & Da'ana, D.A. (2020). Guidelines for the use and interpretation of adsorption isotherm models: A review. Journal of Hazardous Materials, 393, 122383. DOI:10.1016/j.jhazmat.2020.122383
  2. Allen, S.J., Mckay,G. & Porter, J.F. (2004). Adsorption isotherm models for basic dye adsorption by peat in single and binary component systems. Journal of Colloid and Interface Science, 280, pp. 322–333. DOI:10.1016/j.jcis.2004.08.078
  3. Bansal, R.C. & Goyal, M. (2005). Activated Carbon Adsorption, Taylor & Francis, CRC Press, Boca Raton, 2005. DOI:10.1201/9781420028812
  4. Bhatti, H.N., Safa, Y., Yakout, S.M., Shair, O.H., Iqbal, M. & Nazir, A. (2020). Efficient removal of dyes using carboxymethyl cellulose/alginate/polyvinyl alcohol/rice husk composite: Adsorption/desorption, kinetics and recycling studies. International Journal of Biological Macromolecules, 150, pp. 861–870. DOI:10.1016/j.ijbiomac.2020.02.093
  5. Dzieniszewska, A. & Kyzioł-Komosińska, J. (2018). Zdolności sorpcyjne wybranych substancji bogatych w materię organiczną w stosunku do barwników, Polska Akademia Nauk, Komitet Inżynierii Środowiska, Monografie IPIS PAN, Nr 142, Zabrze, Polska.
  6. Goswami, L., Kushwaha, A., Kafle, S.R. & Kim, B.-S. (2022). Surface modification of biochar for dye removal from wastewater. Catalysts, 12, 817. DOI:10.3390/catal12080817
  7. Gupta, V.K. & Suhas (2009). Application of low-cost adsorbents for dye removal – A review. Journal of Environmental Management, 90, pp. 2313–2342. DOI:10.1016/j.jenvman.2008.11.017
  8. Hassani, A., Vafaei, F., Karaca,S. & Khataee, A.R. (2014). Adsorption of a cationic dye from aqueous solution using Turkish lignite: Kinetic, isotherm, thermodynamic studies and neural network modeling. Journal of Industrial and Engineering Chemistry, 20, pp. 2615– 2624. DOI:10.1016/j.jiec.2013.10.049
  9. Herrera-González, A.M., Reyes-Angeles, M.C. & Peláez-Cid, A.A. (2021). Adsorption of anionic dyes using composites based on basic polyelectrolytes and physically activated carbon. Desalination and Water Treatment, 230, 346–358. DOI:10.5004/dwt.2021.27445
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  11. Kajjumba, G.W., Emik, S., Öngen, A., Özcan, H.K. & Aydın, S. (2018). Modelling of adsorption kinetic processes – errors, theory and application. [in:] Advanced sorption process applications, Edebali, S. (Ed), IntechOpen, Rijeka, pp. 1–19.
  12. Kaushik, C.P., Tuteja, R., Kaushik, N. & Sharma, J.K. (2009). Minimization of organic chemical load in direct dyes effluent using low cost adsorbents. Chemical Engineering Journal, 155, pp. 234–240. DOI: 10.1016/j.cej.2009.07.042
  13. Konicki, W., Hełminiak, A., Arabczyk, W. & Mijowska, E. (2017). Removal of anionic dyes using magnetic Fe@graphite core-shell nanocomposite as an adsorbent from aqueous solutions. Journal of Colloid and Interface Science, 497, pp. 155–164. DOI:10.1016/j.jcis.2017.03.008
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  15. Kuśmierek, K., Gałan, M., Kamiński, W. & Świątkowski, A. (2020a). Use of sawdust as a low-cost sorbent for the removal of azo dyes from water. Przemysl Chemiczny, 99, 2, pp. 201–205. DOI:10.15199/62.2020.2.2
  16. Kuśmierek, K., Świątkowski, A., Wierzbicka, E. & Legocka, I. (2020b). Enhanced adsorption of Direct Orange 26 dye in aqueous solutions by modified halloysite. Physicochemical Problems of Mineral Processing, 56, 4, pp. 693–701. DOI:10.37190/ppmp/124544
  17. Kuśmierek, K., Zarębska, K. & Świątkowski, A. (2016). Hard coal as a potential low-cost adsorbent for removal of 4-chlorophenol from water. Water Science & Technology, 73, 8, pp. 2025–2030. DOI:10.2166/wst.2016.046
  18. Lellis, B., Fávaro-Polonio, C.Z., Pamphile, J.A. & Polonio, J.C. (2019). Effects of textile dyes on health and the environment and bioremediation potential of living organisms. Biotechnology Research and Innovation, 3, pp. 275–290. DOI:10.1016/j.biori.2019.09.001
  19. de Mattos, N.R., de Oliveira, C.R., Camargo, L.G.B., da Silva, R.S.R. & Lavall, R.L. (2019). Azo dye adsorption on anthracite: a view of thermodynamics, kinetics and cosmotropic effects. Separation and Purification Technology, 209, pp. 806-814. DOI:10.1016/j.seppur.2018.09.027
  20. O'Keefe, J.M.K., Bechtel, A., Christanis, K., Dai, S., DiMichele, W.A., Eble, C.F., Esterle, J.S., Mastalerz, M., Raymond, A.L., Valentim, B.V., Wagner, N.J., Ward, C.R. & Hower, J.C. (2013). On the fundamental difference between coal rank and coal type. International Journal of Coal Geology, 118, pp. 58–87. DOI:10.1016/j.coal.2013.08.007
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Autorzy i Afiliacje

Krzysztof Kuśmierek
1
ORCID: ORCID
Lidia Dąbek
2
Andrzej Świątkowski
1
ORCID: ORCID

  1. Institute of Chemistry, Military University of Technology, Warsaw, Poland
  2. Faculty of Environmental Engineering, Geomatics and Renewable Energy,Kielce University of Technology, Poland

Abstrakt

Expressing head-related transfer functions (HRTFs) in the spherical harmonic (SH) domain has been thoroughly studied as a method of obtaining continuity over space. However, HRTFs are functions not only of direction but also of frequency. This paper presents an extension of the SH-based method, utilizing hyperspherical harmonics (HSHs) to obtain an HRTF representation that is continuous over both space and frequency. The application of the HSH approximation results in a relatively small set of coefficients which can be decoded into HRTF values at any direction and frequency. The paper discusses results obtained by applying the method to magnitude spectra extracted from exemplary HRTF measurements. The HRTF representations based on SHs and HSHs exhibit similar reproduction accuracy, with the latter one featuring continuity over both space and frequency and requiring much lower number of coefficients. The developed HSH-based continuous functional model can serve multiple purposes, such as interpolation, compression or parametrization for machine-learning applications.
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Autorzy i Afiliacje

Adam Szwajcowski
1

  1. Department of Robotics and Mechatronics, AGH University of Science and Technology, Kraków, Poland

Abstrakt

Precise measurement of the sound source directivity not only requires special equipment, but also is time-consuming. Alternatively, one can reduce the number of measurement points and apply spatial interpolation to retrieve a high-resolution approximation of directivity function. This paper discusses the interpolation error for different algorithms with emphasis on the one based on spherical harmonics. The analysis is performed on raw directivity data for two loudspeaker systems. The directivity was measured using sampling schemes of different densities and point distributions (equiangular and equiareal). Then, the results were interpolated and compared with these obtained on the standard 5° regular grid. The application of the spherical harmonic approximation to sparse measurement data yields a mean error of less than 1 dB with the number of measurement points being reduced by 89%. The impact of the sparse grid type on the retrieval error is also discussed. The presented results facilitate optimal sampling grid choice for low-resolution directivity measurements.
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Autorzy i Afiliacje

Adam Szwajcowski
1
Daniel Krause
2
Anna Snakowska
1

  1. Department of Robotics and Mechatronics, AGH University of Science and Technology, Kraków, Poland
  2. Faculty of Information Technology and Communication Sciences, Tampere University, Tampere, Finland

Abstrakt

This paper presents how to design and simulate two different topologies of a bandpass (BP) rectangular waveguide filter using a direct coupled resonator technique operating at 12 GHz. The filters are characterized by a cross coupling (CM) which produces a single attenuation pole at finite frequency used to realize the bandpass response. The filter resonators provide3rd and 4th order designs with a pseudoelliptic response using High Frequency Structure Simulator (HFSS) simulator. Transmission zeros are obtained through coupling between the fundamental mode and high mode. The filter structures are validated leading to obtain transmission zeros close to the bandpass. The simulated waveguide filters with a central frequency exhibit an insertion loss of 0.4/0.3dB and a return loss of 20/23dB for the whole bandwidth ranging from 11.85GHz to 12.15GHz that show good electromagnetic responses for the simulated rectangular waveguide filters.
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Autorzy i Afiliacje

Gouni Slimane
1
Damou Mehdi
Chetioui Mohammed
2
Boudkhil Abdelhakim
2

  1. Laboratory of Electronics, Signal Processing and Microwave and Laboratory Technology of Communication, Faculty of Technology University Tahar Moulay of Saida, Algeria
  2. Laboratory of Telecommunications, Abu Bakr Belkaid University of Tlemcen, Algeria

Abstrakt

The article analyzes Bertrand Russell’s distinction between knowledge by acquaintance and knowledge by description contained in his writings from 1910 to 1912. I point to some problems that arise from Russell’s concept of direct knowledge if they are observed in the light of modern psychological and neuroscientific research. In some cases knowledge by acquaintance may be mediated by certain unconscious operations and by mental representations of conceptual nature. I point out however that some of the examples given in The Problems of Philosophy can be characterized by a different degree of indirectness. Consequently, I propose to view Russell’s distinction as a typology. Because Russell narrows knowledge by description to specific descriptions, Russell’s division is not exhaustive and therefore is not a logical one. The article also shows that there are reasons for both narrowing his category of direct knowledge (e.g. by excluding universals) and for expanding it (e.g. by unconscious experiences).
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Autorzy i Afiliacje

Andrzej Stępnik
1
ORCID: ORCID

  1. Wydział Filozofii Uniwersytetu Warszawskiego, ul. Krakowskie Przedmieś-cie 3, 00-047 Warszawa

Abstrakt

In order to determine the leading phase of the Fe - 4.25% C eutectic alloy, the method of directional crystallization, which allows to study the character of the solid / liquid growth front, was used. Examined eutectic was directionally solidified with a constant temperature gradient of G = 33,5 K/mm and growth rate of v = 125 μm/s (450 mm/h). The Bridgman technique was used for the solidification process. The sample was grown by pulling it downwards up to 30 mm in length. The alloy quenched by rapid pulling down into the Ga-In-Sn liquid metal. The sample was examined on the longitudinal section using a light microscope and scanning electron microscope. The shape of the solid/liquid interface and particularly the leading phase protrusion were revealed. The formation of the concave – convex interface has been identified in the quasi-regular eutectic growth arrested by quenching. The cementite phase was determined to be a leading phase. The total protrusion d is marked in the adequate figure.

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Autorzy i Afiliacje

M. Trepczyńska-Łent
ORCID: ORCID

Abstrakt

In direct-detection OFDM systems, the nonlinear effects caused by optical modulation and fiber transmission can degrade the system performance severely. In this study, we propose a new nonlinear companding transform to improve the performance of direct detection optical OFDM transmission systems. The demonstration is realized by Monte-Carlo simulation of the intensity modulation and direct detection DCOOFDM optical transmission system at 40 Gbps over a 80 km of standard single mode fiber link. The influence of the companding parameters on the performance of system in different nonlinear transmission conditions has been investigated via simulation.

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Autorzy i Afiliacje

Trang T. Ngo
Nhan D. Nguyen

Abstrakt

This paper develops an automatic method to calculate the macrotexture depth of pavement roads, using the tire/road noise data collected by the two directional microphones mounted underneath a moving test vehicle. The directional microphones collect valid tire/road noise signal at the travel speed of 10–110 km/h, and the sampling frequency is 50 kHz. The tire/road noise signal carries significant amount of road surface information, such as macrotexture depth. Using bandpass filter, principal component analysis, speed effect elimination, Gaussian mixture model, and reversible jump Markov Chain Monte Carlo, the macrotexture depth of pavement roads can be calculated from the tire/road noise data, automatically and efficiently. Compared to the macrotexture depth results by the sand-patch method and laser profiler, the acoustic method has been successfully demonstrated in engineering applications for the accurate results of macrotexture depth with excellent repeatability, at the test vehicle’s travel speed of 10-110 km/h.
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Autorzy i Afiliacje

Hao Liu
1
Yiying Zhang
2
Zhengwei Xu
2
Xiaojiang Liu
2

  1. China Merchants Chongqing Communications Technology Research & Design Institute Co., Ltd, 33 Xuefu Road, Nan’an District, Chongqing, PR China, 400067
  2. China Merchants Roadway Information Technology (Chongqing) Co., Ltd, 33 Xuefu Road, Nan’an District, Chongqing, PR China, 400067

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