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Tytuł:
Metodologiczne aspekty oceny skutków regulacji (OSR) ochronna zdrowia ludności
Autorzy:
Karpińska, K.
Powiązania:
https://bibliotekanauki.pl/articles/228431.pdf
Data publikacji:
2006
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
ochrona zdrowia
system oceny skutków regulacji
proces zarządzania regulacją
efektywność nowych rozwiązań
Opis:
W artykule przedstawiono główne zasady oceny skutków regulacji w zakresie ochrony zdrowia. System oceny skutków regulacji jest jednym z kluczowych elementów procesu zarządzania regulacją, mającym na celu zwiększenie efektywności nowych rozwiązań prawnych. Odbywa się to poprzez oceną, czy nowy projekt maksymalizuje korzyści i minimalizuje koszty społeczne wynikające z jego wdrożenia. Zaprezentowano podstawowe etapy oceny oraz główne metody pomiaru korzyści i kosztów wynikających z wdrożenia projektu z zakresu ochrony zdrowia.
The article presents the main principles of regulatory impact assessment in the field of healthcare. The system of regulatory impact assessment is one of the most important tools of the regulation management process. It is aimed at improving the effectiveness of new legislative proposals. It assesses whether the new proposal maximalises social benefits and minimalises social costs. The paper presents basic stages of assessment and the most popular measurement methods of the above-mentioned costs-benefits analysis applied in health impact assessment.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2006, T. 16, nr 1, 1; 81-86
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current-Voltage Characteristic of Semi-Insulating GaAs, with Trap-Filling Effect
Autorzy:
Karpińska, K.
Łusakowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1886537.pdf
Data publikacji:
1991-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.20.Jv
Opis:
A detailed investigation of current-voltage (I- V)characteristics of semi-insulating GaAs sample was performed in the vicinity of room temperature. The sample with 300 K resistivity of 2 x 10$\text{}^{7}$ Ω cm was supplied with guard-ring electrodes which allowed the elimination of surface currents. The observed characteristics started with an ohmic part which was followed by a superlinear current on voltage dependence. At a threshold voltage V$\text{}_{th}$ which corresponds to the electric field of about 2 kV/cm the current increased abruptly by a few orders of magnitude. The value of V$\text{}_{th}$ increased with the temperature. It is proposed that the observed shape of the I-V curve is caused by the filling of the EL2 level with injected electrons heated by the electric field.
Źródło:
Acta Physica Polonica A; 1991, 79, 2-3; 281-285
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear Coupling of Oscillatory Modes in Current Flow in Semi-Insulating GaAs
Autorzy:
Karpińska, K.
Łusakowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1891273.pdf
Data publikacji:
1991-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.20.Ht
Opis:
Spontaneous current oscillations in semi-insulating (SI) GaAs sample caused by high electric field domains nucleation were perturbed by modulated illumination. Coupling between domain and photocurrent oscillations leads to quasiperiodic and frequency-locked behaviour. The observed Arnol'd tongues structure follows the Farey tree ordering and agrees with predictions of the circle map theory. We also suggest a possible mechanism responsible for the coupling of the modes.
Źródło:
Acta Physica Polonica A; 1991, 80, 3; 425-428
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hot Carrier Effects in Optically Detected Cyclotron Resonance Studies of III-V Semiconductors
Autorzy:
Karpińska, K.
Dedulewicz, S.
Godlewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1920978.pdf
Data publikacji:
1992-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.35.+z
72.70.+m
76.90.+d
Opis:
The mechanisms of irregular photoluminescence intensity oscillations, as observed in optically detected cyclotron resonance experiments, are discussed. Two possible scenarios are analyzed, both requiring impact ionization of the center(s) by electric field accelerated free carriers. The first assumes coexistence of dielectric and energy relaxation processes. The second assumes a subsequent impact ionization of two different centers.
Źródło:
Acta Physica Polonica A; 1992, 82, 4; 623-626
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical Properties of Molecular Beam Epitaxy Grown ZnSe on GaAs
Autorzy:
Karpińska, K.
Suchocki, A.
Godlewski, M.
Hommel, D.
Powiązania:
https://bibliotekanauki.pl/articles/1929648.pdf
Data publikacji:
1993-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.55.Bd
68.55.Ln
78.66.Fd
Opis:
Photoluminescence studies of molecular beam epitaxy grown ZnSe-on-GaAs layers are presented. The high sensitivity of the PL technique allowed for identification unintentional dopants in pure ZnSe sample. Characteristic photoluminescence lines due to extended defects were observed. The experimental results obtained show a correlation between intentional doping level and extended defects concentration. We conclude also that even though molecular beam epitaxy layers are grown at low temperature, the self-compensation mechanism may still be important. For heavily doped sample edge emission is deactivated likely due to efficient energy transfer link with deep donor-acceptor pair bands.
Źródło:
Acta Physica Polonica A; 1993, 84, 3; 551-554
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rare-Earth Excitation Mechanism in Wide Band Gap H-VI Compounds
Autorzy:
Karpińska, K.
Świątek, K.
Godlewski, M.
Niinistö, L.
Leskelä, M.
Powiązania:
https://bibliotekanauki.pl/articles/1929798.pdf
Data publikacji:
1993-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Gs
76.30.Kg
78.55.Et
Opis:
The excitation mechanism of rare-earth emission in Eu and Ce doped CaS and SrS is studied. It is proposed that the Eu and probably also Ce emission is induced by the photoionization transition of the rare-earth ion, which is followed by the carrier trapping via the excited state of the ion. At increased temperatures the efficiency of excitation is reduced. We explain this effect by the carrier emission from the excited core state of the rare-earth ion to the continuum of the conduction (valence) band states. It is also suggested that the charge transfer state of the rare-earth ion may act as the intermediate state in the carrier trapping.
Źródło:
Acta Physica Polonica A; 1993, 84, 5; 959-962
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Excitation and Recombination Processes in InAs$\text{}_{x}$P$\text{}_{1-x}$:Yb (x=0.04, 0.07 and 0.11)
Autorzy:
Godlewski, M.
Kozanecki, A.
Karpińska, K.
Bergman, J. P.
Monemar, B.
Powiązania:
https://bibliotekanauki.pl/articles/1932083.pdf
Data publikacji:
1995-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.55.Eq
78.55.Cr
71.35.+z
Opis:
Excitation and recombination mechanisms of Yb$\text{}^{3+}$ 4f-4f intra-shell emission in InP and InAsP (4, 7 and 11% of As) are analyzed.
Źródło:
Acta Physica Polonica A; 1995, 87, 1; 217-220
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
AlGaAs to GaAs Energy Transfer Mechanisms in AlGaAs/GaAs Structures
Autorzy:
Karpińska, K.
Godlewski, M.
Żytkiewicz, Z. R.
Chen, W. M.
Weber, E. R.
Powiązania:
https://bibliotekanauki.pl/articles/1921617.pdf
Data publikacji:
1992-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.20.Jv
76.70.Hb
78.55.Cr
Opis:
The results of photoluminescence and optically detected cyclotron resonance experiments are presented for thick AlGaAs epilayers grown by liquid phase electroepitaxy method on GaAs:Cr substrate. These results indicate an efficient energy transfer from excited AlGaAs to GaAs.
Źródło:
Acta Physica Polonica A; 1992, 82, 4; 713-716
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical Characterization of CdZnSe/ZnSe Multiquantum Well System
Autorzy:
Godlewski, M.
Karpińska, K.
Bergman, J. P.
Monemar, B.
Kurtz, E.
Hommel, D.
Powiązania:
https://bibliotekanauki.pl/articles/1932081.pdf
Data publikacji:
1995-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.60.-p
71.35.+z
76.70.Hb
Opis:
Optical properties of Cd$\text{}_{x}$Zn$\text{}_{1-x}$Se/ZnSe (x = 0.12) multiquantum well system are discussed. The transient photoluminescence and optically detected cyclotron resonance experiments demonstrate a strong contribution of bound exciton emission to the low temperature photoluminescence spectra.
Źródło:
Acta Physica Polonica A; 1995, 87, 1; 209-212
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation of Jacobian inverse kinematics algorithms
Autorzy:
Tchoń, K.
Karpińska, J.
Janiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/929992.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
kinematyka odwrotna
pseudoodwrotny Jacobian
aproksymacja
robot inverse kinematics
extended Jacobian
Jacobian pseudoinverse
approximation
Opis:
This paper addresses the synthesis problem of Jacobian inverse kinematics algorithms for stationary manipulators and mobile robots. Special attention is paid to the design of extended Jacobian algorithms that approximate the Jacobian pseudoinverse algorithm. Two approaches to the approximation problem are developed: one relies on variational calculus, the other is differential geometric. Example designs of the extended Jacobian inverse kinematics algorithm for 3DOF manipulators as well as for the unicycle mobile robot illustrate the theoretical concepts.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2009, 19, 4; 519-531
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SARS-CoV-2 infection - spread and pathogenicity
Autorzy:
Szkaradkiewicz-Karpinska, A.
Baksalary-Izycka, K.
Powiązania:
https://bibliotekanauki.pl/articles/2097877.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
SARS-CoV-2
saliva
dentistry
gastrointestinal infection
COVID-19
Opis:
In December 2019, a new disease, similar to severe acute respiratory syndrome (SARS), was reported in Wuhan, China. It was quickly indicated that the causative agent of this new coronavirus disease 2019 (COVID-19) is a previously unknown coronavirus, now called SARS coronavirus 2 (SARS-CoV-2). The result of the global outbreak of COVID-19 in the world (currently COVID-19 is present on all continents, except Antarctica) is the pandemic status 2019–2020, as declared by the WHO and Public Health Emergency of International Concern (PHEIC).The virus has a high epidemic potential and is effectively transmitted between humans. The primary route for SARS-CoV-2 infection to spread is air-droplet transmission. In addition, SARS-CoV-2 can be transmitted through direct contact with an infected person, or indirectly via coronavirus-contaminated materials or objects. Current data also indicate the possibility of an alternative route of SARS-CoV-2 infection – through the gastrointestinal tract. The article discusses various SARS-CoV-2 transmission options, with particular attention paid to the role of saliva and gastrointestinal tract in the spreading of the virus. Current data on SARS-CoV-2 pathogenicity and clinical symptoms of COVID-19 are also analyzed. Expanding knowledge about SARS-CoV-2 infection, especially in terms of its spread, will contribute to further actions aimed at preventing transmission of this pathogen.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2020, 14, 2; 49-51
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Node-node distance distribution for growing networks
Autorzy:
Malarz, K.
Karpińska, J.
Kardas, A.
Kułakowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1955699.pdf
Data publikacji:
2022-01-22
Wydawca:
Politechnika Gdańska
Tematy:
evolving networks
random networks
scale-free networks
trees
small-world effect
Opis:
We present a simulation of the time evolution of the distance matrix. The result is a node-node distance distribution for various kinds of networks. For the exponential trees, analytical formulas are derived for the moments of distance distribution.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 1; 115-119
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the influence of high humidity and exposure duration on the measurement results of radon concentration by means of PicoRad system in the CLOR calibration chamber
Autorzy:
Stawarz, O.
Karpińska, O.
Mamont-Ciesla, K.
Powiązania:
https://bibliotekanauki.pl/articles/148604.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radon
activated charcoal
relative humidity
duration of exposure
PicoRad system
Opis:
PicoRad system based on activated charcoal collectors and liquid scintillation counter is one of the most popular passive methods of radon measurements which may be used both indoors and in other environments such as caves, tunnels, mines etc. It is well known that charcoal is also a very good adsorber of water vapor and it can reduce adsorption efficiency for radon. In PicoRad collectors, the charcoal is mixed with a dessicant to lower this effect. A series of expositions of PicoRad detectors was performed in a Central Laboratory for Radiological Protection (CLOR) radon calibration/climatic chamber to study the effect of high relative humidity on the airborne radon concentration measurements and the dependence of the results on the duration of exposure. The results obtained from the PicoRad system were referred to the mean concentrations delivered by an AlphaGUARD monitor, Genitron (GmbH), Germany. The main conclusions are the following: 1) the PicoRad system results are not affected by high relative humidity, including extreme values of 90-96%, for the duration of exposure up to ca. 24 h; 2) in the relative humidity range of 75-96% the correction coefficient linearly depends on the duration of exposure reaching a value of ca. 16 for 96 h exposure; 3) the PicoRad system delivers results corresponding better to the mean value of radon concentration in the last 6 h interval of exposure than that in the whole exposure duration. This finding is particularly important for the calibration of PicoRad collectors in the conditions of decreasing radon concentration due to radon decay.
Źródło:
Nukleonika; 2006, 51,suppl.2; 53-57
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal changeability of indoor radon concentrations in one-family house
Autorzy:
Karpińska, M.
Mnich, Z.
Kapała, J.
Antonowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/147979.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radon
seasonal changes
Opis:
Indoor radon concentration undergoes 24-hour and seasonal changes. The paper presents first in Poland results of radon concentration changeability in one building during the whole year. We performed 103 measurements of indoor radon concentrations. The following parameters of radon concentration distribution were obtained: arithmetic mean - 224.1 Bq m 3, geometric mean - 194.5 Bq m 3, median - 207 Bq m 3, and geometric standard deviation - 1.84. The minimum observed value was 22 Bq m 3 and the maximum - 748 Bq m 3. We determined the monthly and annual values of radon concentrations. The values for particular months are in the range of 0.5 to 1.6 of the annual mean. We observed a correlation between the mean radon concentrations in the examined buildings and the differences in the mean values of indoor (R = 0.91, p < 0.05) and outdoor temperatures (R = 0.91, p < 0.05). There was also a connection between the radon concentration inside the buildings and the changes in atmospheric pressure.
Źródło:
Nukleonika; 2004, 49, 1; 33-36
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of radon hazard to inhabitants of the Augustów Plane sandr and inhabitants of the Suwałki region of fluvioglacial sands and gravels
Autorzy:
Karpińska, M.
Wołkowicz, S.
Mamont-Cieśla, K.
Mnich, Z.
Kapała, J.
Powiązania:
https://bibliotekanauki.pl/articles/148346.pdf
Data publikacji:
2003
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
building
geology
radon
Opis:
In a region of two lithologic units: the Augustów Plane sandr and the Suwałki sands and fluvioglacial gravels, 134 measurements of radon concentrations in dwelling houses were performed. An integral method of solid state nuclear trace detectors (SSNTD) was used in the studies. Statistically significant differences in the radon concentrations in both geological units were obtained. The radon concentration arithmetic mean was 197 Bq m-3, geometric mean - 119 Bq m-3, median - 111 Bq m-3, the maximal value being 1225 Bq m-3 in the region of the Suwałki fluvioglacial sands and gravels. The Augustów Plane sandr revealed arithmetic mean of radon concentration equal to 123 Bq m-3, geometric mean – 80 Bq m-3, and median equal to 67 Bq m-3, maximal value 695 Bq m-3. The annual effective dose of the radon obtained by inhabitants of the Augustów Plane sandr is 1.7 mSv and for inhabitants of the Suwałki fluvioglacial sands and gravels it is 2.5 mSv.
Źródło:
Nukleonika; 2003, 48, 4; 197-200
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
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