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Tytuł:
The use of conjoint method for assessing the relevance of railway investments
Zastosowanie metody conjoint do analizy trafności inwestycji kolejowych
Autorzy:
Wojtowicz, D.
Wolański, M.
Widła-Domaradzki, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/374687.pdf
Data publikacji:
2015
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
railway infrastructure
conjoint method
railway investments
ex ante evaluation
infrastruktura kolejowa
metoda skojarzeń
inwestycje kolejowe
ocena ex ante
Opis:
The article deals with designing and testing the use of conjoint analysis method, as one of the tool that provides information gathered within carrying out the exante evaluation of railway infrastructure investments. The authors point to a possible area of application of the method and its usefulness for policy-makers. The proposed method has been tested in empirical research, and the results confirmed the usefulness of the data that can be obtained through its use. Originality of undertaken subject arises from the fact that conjoint method has not been used as a component of ex ante evaluations of EU cofunded programmes, which focus on the railway sector investments. The use of the method may help to strengthen the synergy effects between planned to realize within broader programmes investments. The issue has important practical dimension resulting from intensified investments in the railway sector in the countries which benefit from EU cohesion policy’s funds.
Artykuł koncentruje się na kwestiach związanych z projektowaniem i przetestowaniem metody conjoint w ramach ewaluacji ex ante projektów inwestycyjnych z zakresu infrastruktury kolejowej. Autorzy wskazują obszar zastosowania metody i jej przydatności dla decydentów. Proponowana metoda została przetestowana w badaniach empirycznych, a wyniki potwierdziły przydatność danych, które można uzyskać przez jej stosowanie. Oryginalność podjętego tematu wynika z faktu, że metoda conjoint nie została wykorzystana jako element oceny ex ante programów współfinansowanych ze środków unijnych w sektorze kolejowym. Wykorzystanie tej metody może się przyczynić do zwiększenia synergii planowanych w ramach programów operacyjnych inwestycji. Kwestia ta ma istotny wymiar praktyczny wynikający z intensywnych inwestycji w sektorze kolejowym w krajach, które korzystają ze środków unijnej polityki spójności.
Źródło:
Transport Problems; 2015, 10, 1; 121-135
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-domain battle : new doctrine of the United States Armed Forces
Autorzy:
Wójtowicz, T.
Król, D.
Powiązania:
https://bibliotekanauki.pl/articles/93320.pdf
Data publikacji:
2018
Wydawca:
Akademia Sztuki Wojennej
Tematy:
multi-domain battle
operational principles
military doctrines
US Armed Forces
Opis:
This article describes the newest doctrine of the U.S. Armed Forces, i.e. the Multi- Domain Battle (MDB) concept. It constitutes a description of several operational principles related to a potential conflict with the People’s Republic of China or the Russian Federation, such as the time and space for conducting military operations, the operating environment, the forces (base of operations), the target, the concentration of forces and the operational leeway. The article looks at the origins of the doctrine, the circumstances under which it was formed and people who contributed to its development. The authors also refer to historical U.S. doctrines, such as the AirLand Battle or AirSea Battle concepts. Along with the authors’ enthusiastic approach to MDB, the article also features some critical opinions which imply that the U.S. Army is not ready for MDB operations. The research methods that were used by the authors included analysis, synthesis, comparison and generalisation. Much space is devoted to analysing the U.S. Army’s official documents, including Multi-Domain Battle: Evolution of Combined Arms for the 21st Century 2025-2040, FM 3-0 Operations and TRADOC Multi-Domain Battle: Combined Arms for the 21st Century. The authors believe that Multi-Domain Battle is about to become the official military doctrine of the U.S. Armed Forces. In spite of the criticism, transformations of individual combat teams in the MDB spirit should be expected in the upcoming years. This doctrine also provides a military response to the geo-political changes occurring in the world, manifested as the United State’s limited role in certain regions, China’s growing power and Russia’s aggressive foreign policy. The conclusions formulated in the article may serve as the starting point for further studies dealing, inter alia, with the Polish Army’s readiness for conducting military operations, based on the MDB doctrine, jointly with the U.S. Army, the Polish Anti-Access/Area Denial (A2AD) capabilities and the role of military technologies in the MDB doctrine. The article makes use of the exact translation of the term, i.e. “Multi-Domain Battle.” However, the reader should bear in mind that it describes capabilities not only at the tactical level but also in operational terms, enabling the accomplishment of the strategic objective.
Źródło:
Zeszyty Naukowe Akademii Sztuki Wojennej; 2018, 3(112); 64-78
2543-6937
Pojawia się w:
Zeszyty Naukowe Akademii Sztuki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finding Differential Paths in ARX Ciphers through Nested Monte-Carlo Search
Autorzy:
Dwivedi, A. D.
Morawiecki, P.
Wójtowicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/226721.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ARX ciphers
SPECK Cipher
Nested Monte-Carlo Search
differential cryptanalysis
Opis:
We propose the adaptation of Nested Monte-Carlo Search algorithm for finding differential trails in the class of ARX ciphers. The practical application of the algorithm is demonstrated on round-reduced variants of block ciphers from the SPECK family. More specifically, we report the best differential trails, up to 9 rounds, for SPECK32.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 2; 147-150
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of water vapor permeability of biodegradable starch-based films
Ocena przepuszczalności pary wodnej skrobiowych folii biodegradowalnych
Autorzy:
Rejak, A.
Wojtowicz, A.
Oniszczuk, T.
Niemczuk, D.
Nowacka, M.
Powiązania:
https://bibliotekanauki.pl/articles/792213.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
starch
biodegradable packaging
water vapour
permeability
gravimetric method
starch-based film
screw speed
film blowing
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extrusion pretreatment of maize straw - case study for a Polish biogas plants
Autorzy:
Kozłowski, K.
Lewicki, A.
Czekała, W.
Wójtowicz, A.
Kupryaniuk, K.
Dróżdż, D.
Powiązania:
https://bibliotekanauki.pl/articles/2082645.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
maize straw
extrusion
methane fermentation
biogas
energetic potential
Opis:
One of the most commonly used substrates in biogas plants is maize silage, however, the application of monofermentation technology under Polish economic conditions has a tendency to rapidly bankrupt the investor. The lack of profitability of investments based on this material has encouraged investors to search for other, more economically favourable biomass sources i.e. maize straw. The aim of the research was to compare the energetic potential of untreated maize straw and extruded maize straw used for biogas production and furthermore, to determine the amount of electricity and heat generated as well as the amount of heat produced from direct combustion. The results obtained confirmed the substantial energy potential of maize straw. It has been proven that using the extrusion method as a pretreatment before the fermentation process, enables the producer to increase biogas and methane production respectively by 7.50 and 8.51%. However, the use of an extruder machine in biogas plants in Poland is economically unjustified due to its high energy consumption. Moreover, it has been shown, that the use of maize straw in the methane fermentation process enables it to generate (in Poland) a higher income than is the case of using this material in a direct combustion process.
Źródło:
International Agrophysics; 2019, 33, 4; 527-535
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Desorption of Krypton Implanted into Silicon
Autorzy:
Turek, M.
Droździel, A.
Wójtowicz, A.
Filiks, J.
Pyszniak, K.
Mączka, D.
Yuschkevich, Y.
Powiązania:
https://bibliotekanauki.pl/articles/1030211.pdf
Data publikacji:
2017-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.43.Vx
61.72.uf
Opis:
The thermal desorption spectrometry studies of krypton implanted Si samples are presented. Implantations (with the fluence 2×10¹⁶ cm¯²) were done with the energies 100, 150, and 200 keV. Additionally, a 200 keV and 100 keV Kr⁺G double implantation was performed. A sudden Kr release was observed in the ≈1100-1400 K range, most probably coming from the gas bubbles in cavities. The desorption activation energy varies from 2.5 eV (100 keV) to 0.8 (200 keV). The peak splitting suggests existence of two kinds of cavities trapping the implanted noble gas. Two Kr releases are observed for the 200 and 100 keV double-implanted samples. The peak shift of the release corresponding to 100 keV implantation could be a result of both introduced disorder and higher effective Kr concentration. The desorption activation energy is risen to ≈3.2 eV for both releases.
Źródło:
Acta Physica Polonica A; 2017, 132, 2; 249-253
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low Temperature Processing of Nanostructures Based on II-VI Semiconductors Quantum Wells
Autorzy:
Majewicz, M.
Śnieżek, D.
Wojciechowski, T.
Baran, E.
Nowicki, P.
Wojtowicz, T.
Wróbel, J.
Powiązania:
https://bibliotekanauki.pl/articles/1376129.pdf
Data publikacji:
2014-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.61.Ga
73.63.Hs
68.37.Hk
62.23.St
Opis:
We report the first results of electron beam lithography processes performed on polymethyl methacrylate (PMMA) and hydrogen silsesquioxane (HSQ) resists, which have been pre-backed in vacuum at T ≤ 90°C. For such low temperature processing the lithographical resolution is reduced as compared to standard procedures, however, the exposure contrast and adhesion to CdTe and HgTe substrates have been sufficient for the fabrication of sub-μ m quantum devices. Furthermore, the new method of electrical microcontact forming is proposed, based on the local melting and annealing of an indium metal layer, performed with the application of accelerated electron beam. The method has been tested for CdTe/CdMgTe quantum wells using the lithography techniques, the exposure parameters have been optimized by inspecting the morphology of annealed metal film via the in situ imaging.
Źródło:
Acta Physica Polonica A; 2014, 126, 5; 1174-1176
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Triplet States in DOPA-Melanin and in Its Complexes with Kanamycin and Copper Cu(II) Ions
Autorzy:
Najder-Kozdrowska, L.
Pilawa, B.
Buszman, E.
Więckowski, A.
Świątkowska, L.
Wrześniok, D.
Wojtowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/1535688.pdf
Data publikacji:
2010-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.66.Hq
76.30.Rn
87.64.kh
Opis:
The mono- and biradical forms of DOPA-melanin (DOPA-eumelanin) were studied by EPR spectroscopy in 100-300 K temperature range. The existence of triplet states in DOPA-melanin was proved. The analysis of EPR spectra has shown that in DOPA-melanin and its complexes with kanamycin and $Cu^{2+}$ ions, two kinds of paramagnetic centres exist. The first of them are in doublet ground state with spin S = 1/2 and they obey the Curie law. The paramagnetic centres of the second group are in thermally excited triplet state with spin S = 1 and in this case the Curie law is not fulfilled.
Źródło:
Acta Physica Polonica A; 2010, 118, 4; 613-618
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exciton Magnetic Polaron Features in Photoluminescence Excitation Spectra of CdTe/(CdMn)Te Quantum Wells with High Mn Contents
Autorzy:
Mackh, G.
Ossau, W.
Yakovlev, D. R.
Landwehr, G.
Wojtowicz, T.
Karczewski, G.
Kossut, J.
Powiązania:
https://bibliotekanauki.pl/articles/1933923.pdf
Data publikacji:
1995-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.35.+z
78.55.Et
Opis:
Exciton magnetic polarons are studied in CdTe/Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te (0.4 ≤ x ≤ 0.8) quantum wells. The magnetic polaron formation leads to the appearance of an additional line in the photoluminescence excitation spectra, which can be employed to determine the Zeeman splittings more exactly than by using the free exciton peak. We find an overall increase in the polaron energy with increasing x in the whole range of Mn contents studied.
Źródło:
Acta Physica Polonica A; 1995, 88, 5; 849-852
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Desorption of Helium from Defected Silicon
Autorzy:
Turek, M.
Droździel, A.
Pyszniak, K.
Wójtowicz, A.
Mączka, D.
Yuschkevich, Y.
Vaganov, Y.
Żuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/1402210.pdf
Data publikacji:
2015-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.43.Vx
61.72.uf
Opis:
The thermal desorption spectroscopy measurements of He implanted silicon samples are reported. The He implantation energy was 90 keV (at 45° tilt) while the fluence was 10¹⁶ cm¯². Additionally, the influence of Si pre-implantation (fluences in the range 10¹⁴-10¹⁶ cm¯², E=260 keV) was under investigation. The He releases from both interstitials/vacancies (β peak) and cavities (α peak or rather band consisting probably of at least two peaks) were observed. The α peak disappears for the pre-implantation fluences larger than 10¹⁵ cm¯², while β peak becomes broader and shifts toward higher temperatures. The thermal desorption spectra were collected using heating ramp rates in the range 0.3-0.7 K/s. Desorption activation energy of the β peak for different pre-implantation fluences was found using the Redhead analysis of the β peak shift. It varies from 0.97 eV for the sample that was not pre-implanted up to 1.3 eV for the sample pre-implanted with the fluence 10¹⁶ cm¯².
Źródło:
Acta Physica Polonica A; 2015, 128, 5; 849-852
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optically Detected Magnetic Resonance of Excess Electrons in CdTe/(Cd,Mg)Te Quantum Wells
Autorzy:
Hu, C. Y.
Ossau, W.
Yakovlev, D. R.
König, B.
Wojtowicz, T.
Karczewski, G.
Kossut, J.
Powiązania:
https://bibliotekanauki.pl/articles/1969094.pdf
Data publikacji:
1998-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
76.70.Hb
71.35.-y
71.35.Ji
Opis:
The spin resonance of excess electrons is observed with the detection either on the neutral or the negatively charged exciton X$\text{}^{-}$ emission in type I CdTe/(Cd,Mg)Te quantum wells with excess electrons of low density. It is found that the electron spin-dependent and electron spin-conserving formation and recombination of X$\text{}^{-}$ make the optical detection of the spin resonance of excess electrons feasible. For the first time, optically detected magnetic resonance is used to study fast optical transition processes in the nanosecond timescale where the microwave-induced magnetic transition rate is much lower than the optical transition rate.
Źródło:
Acta Physica Polonica A; 1998, 94, 2; 351-354
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Desorption Studies of $Ar^{+}$ Implanted Silicon
Autorzy:
Drozdziel, A.
Wojtowicz, A.
Turek, M.
Pyszniak, K.
Maczka, D.
Slowinski, B.
Yushkevich, Y.
Zuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/1382778.pdf
Data publikacji:
2014-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.43.Vx
61.72.uf
Opis:
Thermal desorption spectrometry measurements were performed for Ar implanted Si samples. Implantation energy $E_{i}$ varied in the range 85-175 keV. The release of implanted Ar in two steps was observed in the temperature range 930-1300 K: the relatively narrow peak at lower temperature ( ≈ 930 K for implantation fluence 5 × $10^{16}$ $cm^{-2}$) is due to the release of Ar from the agglomerations (bubbles) while the broader peak observed for higher temperatures ( ≈ 950 K for implantation fluence 5 × $10^{16}$ $cm^{-2}$) comes from Ar atoms diffusing out of the sample. Inverse order of peaks is observed compared to the results for lower energy implantations (< 50 keV). Analyzing the thermal desorption spectra collected for different heating ramp rates enabled estimation of the desorption activation energy (2 eV for $E_{i}$ = 85 keV and 1.7 eV for $E_{i}$ = 115 keV).
Źródło:
Acta Physica Polonica A; 2014, 125, 6; 1400-1403
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Spin-Glass Transition in Semimagnetic Quantum Wells Based on Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te by Means of Optical Spectroscopy
Autorzy:
Zehnder, U.
Yakovlev, D. R.
Ossau, W.
Waag, A.
Landwehr, G.
Wojtowicz, T.
Karczewski, G.
Kossut, J.
Powiązania:
https://bibliotekanauki.pl/articles/1968455.pdf
Data publikacji:
1997-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.35.Ji
78.55.Et
Opis:
The spin-glass transition in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te epitaxial layers and bulk samples with 0.24 ≤ x ≤ 0.43 and in quantum well structures on the basis of Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te were investigated by means of optical spectroscopy. Reduction of dimensionality of Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te layers down to the quasi-two-dimensional case realized in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te/Cd$\text{}_{1- y}$Mn$\text{}_{y}$Te heterostructures frustrates the spin-glass formation, which is in agreement with theoretical predictions. The spin-glass formation is also frustrated in the vicinity of interfaces between semimagnetic and nonmagnetic semiconductors in CdTe/Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te quantum wells.
Źródło:
Acta Physica Polonica A; 1997, 92, 5; 1075-1078
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Host-protozoans-bacteria-fungi interrelations in the mouths of patients with systemic illnesses
Autorzy:
Chomicz, L
Piekarczyk, J.
Starosciak, B.
Fiedor, P.
Piekarczyk, B.
Wojtowicz, A.
Szubinska, D.
Swiderski, Z.
Rebandel, H.
Powiązania:
https://bibliotekanauki.pl/articles/839720.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
mouth
systemic illness
patient
interrelation
bacteria
fungi
protozoon
host
Opis:
The aim of this work was to study clinical changes and microorganisms in mouths of three patient groups: with congenital disorders (Cd), dialyzed (D) and control (C). Fifty five patients, 20 to 62 years old were assessed. Swabs and samples of periodontal tissue were used for microscopical study to detect of protozoans and for bacterial and fungal cultures. E. Gingivalis and T. tenax were found in all groups. Three out of Cd patients were infected with Acanthamoeba sp. Fecal bacteria were more often found in D than Cd. In all 30-40 years old D patients, fecal bacteria and various strains of C. albicans occurred. We found that systemie diseases favour instabilities in mouths changing interrelations between protozoa, bacteria and fungi. It may increase risk of clinical complications.
Źródło:
Annals of Parasitology; 2001, 47, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Host-protozoans-bacteria-fungi interrelations in the mouths of patients with systemic illnesses
WZAJEMNE RELACJE ŻYWICIEL- PIERWOTNIAKI - BAKTERIE - GRZYBY W JAMIE USTNEJ PACJENTÓW Z CHOROBAMI UKŁADOWYMI
Autorzy:
Chomicz, L.
Piekarczyk, J.
Starościak, B.
Fiedor, P.
Piekarczyk, B.
Wójtowicz, A.
Szubińska, D.
Świderski, Z.
Rebandel, H.
Powiązania:
https://bibliotekanauki.pl/articles/2148291.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
mouth
systemic illness
patient
interrelation
bacteria
fungi
protozoon
host
Opis:
The aim of this work was to study clinical changes and microorganisms in mouths of three patient groups: with congenital disorders (Cd), dialyzed (D) and control (C). Fifty five patients, 20 to 62 years old were assessed. Swabs and samples of periodontal tissue were used for microscopical study to detect of protozoans and for bacterial and fungal cultures. E. Gingivalis and T. tenax were found in all groups. Three out of Cd patients were infected with Acanthamoeba sp. Fecal bacteria were more often found in D than Cd. In all 30-40 years old D patients, fecal bacteria and various strains of C. albicans occurred. We found that systemie diseases favour instabilities in mouths changing interrelations between protozoa, bacteria and fungi. It may increase risk of clinical complications.
Źródło:
Wiadomości Parazytologiczne; 2001, 47, 4; 559-563
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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