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Search Results: 1 - 10 of 2976 matches for " Andrzej Czyzewski "
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Methods of Improving Speech Intelligibility for Listeners with Hearing Resolution Deficit
Adam Kupryjanow, Andrzej Czyzewski
Diagnostic Pathology , 2012, DOI: 10.1186/1746-1596-7-129
Abstract: http://www.diagnosticpathology.diagnomx.eu/vs/2065486371761991 webciteTime scale modification algorithms have been widely used for supporting various types of speech perception disorders. The main fields of TSM application are: Language Learning Impairment (LLI) [1-3], Second-Language Learning [4,5], Central Auditory Processing Disorders (CAPD) [6-9], verbal apraxia [10] and aphasia [9]. Despite the large number of works that are devoted to the influence of the time-expanded speech on several disorders, there are still deficiencies in this area. For example verbal apraxia and aphasia were only mentioned by Coyle [10] and Nejime [8] but evaluation of the TSM methods with such a group of subjects was not performed. Serve-to-profoundly hearing impaired children were examined by Uchanski et al. [11], but in that research, analysis of the hearing resolution impairment caused by the CAPD was not investigated.In this work, three methods for real-time TSM, dedicated for listeners with hearing resolution deficit are presented. Effectiveness of these methods was examined for two different age groups of listeners: the hearing impaired children and the elderly persons with presbycusis. The latter group was chosen based on the assumption that main difficulties in speech comprehension in elderly people are associated with central auditory processing aspects of hearing [12,13]. The same hypothesis was the principle of speech modification methods proposed by Nakamura [6] and Nejime [9]. The former was selected because of the lack of research results in the area of analysis of relationship between the CAPD and time-expansion of speech. Uchanski [11] has shown that there is no statistically important impact on the speech recognition rate for the group of hearing impaired children, but in that research, hearing resolution deficit of speech perception (related to the CAPD) was not investigated. Therefore, in this paper hearing resolution of the listener was analysed in accordance with
HUMAN-COMPUTER INTERFACE BASED ON VISUAL LIP MOVEMENT AND GESTURE RECOGNITION
Piotr Dalka,,Andrzej Czyzewski
International Journal of Computer Science & Applications , 2010,
Abstract:
The Truth and Reconciliation Commission of Canada: Insights into the Goal of Transformative Education
Karina Czyzewski
International Indigenous Policy Journal , 2011,
Abstract: In 2006, the Government of Canada announced the approval of a final Residential Schools Settlement Agreement with the collaboration of the four churches responsible (United, Anglican, Presbyterian, Catholic), the federal government and residential school survivors. Schedule "N" of the Agreement lists the mandate of the TRC; therein, the TRC states one of its goals as: (d) to promote awareness and public education of Canadians about the system and its impacts. Can education - as the TRC hopes to engender - truly be transformative, renewing relationships and promoting healing in the process of forging these new relationships? The literature reviewed and the conferences attended highlighted that generating empathy maybe a necessary ingredient for the instigation of social change, but is insufficient. Transformation through education, or reconciliation through truth-telling, testimonial reading and responsible listening would mean claiming a genuine, supportive responsibility for the colonial past. Educational policy and media initiatives are fundamental to creating awareness, developing public interest and support of the TRC's recommendations. However, authors also stress the importance of critical pedagogy in the whole process of truth andreconciliation, and that real reconciliation would require confronting the racism that initiated these institutions and allowed for a decontextualization of their impacts.
Colonialism as a Broader Social Determinant of Health
Karina Czyzewski
International Indigenous Policy Journal , 2011,
Abstract: A proposed broader or Indigenized social determinants of health framework includes "colonialism" along with other global processes. What does it mean to understand Canadian colonialism as a distal determinant of Indigenous health? This paper reviews pertinent discourses surrounding Indigenous mental health in Canada.With an emphasis on the notion of intergenerational trauma, there are real health effects of social, political, and economic marginalization embodied within individuals, which can collectively affect entire communities. Colonialism can also be enacted and reinforced within Indigenous mental health discourse, thus influencing scholarly and popular perceptions. Addressing this distal determinant through policy work necessitates that improving Indigenous health is inherently related to improving these relationships, i.e. eliminating colonial relations, and increasing self-determination.
Single spin asymmetry of vector meson production in the string model
Jan Czyzewski
Physics , 1996,
Abstract: Azimuthal asymmetry of vector-meson production in single-transversely polarized proton-proton collisions ($p\up p$) is calculated in a model based on the string fragmentation. The string is spanned by a valence quark of the projectile scattered on the target. The asymmetry is generated only during fragmentation of the scattered quark into hadrons. The obtained asymmetry of the $\rho$ mesons is opposite in sign to that of pions. On the other hand, if the asymmetry were generated during the quark scattering then the asymmetries of the vector and of the pseudoscalar mesons would be close to each other.
Correlations in transverse momentum in pion-proton and kaon-proton collisions at 250 GeV/c
Jan Czyzewski
Physics , 1996,
Abstract: We have measured the second-order normalized differential factorial moments as a function of the difference of transverse momentum ($\Delta p_T$) in $\p^+ p$ and $K^+ p$ collisions at 250 GeV/$c$. The second-order differential factorial moments for like-charged pairs reveal a strong increase with decreasing $\Delta p_T$. In a small central rapidity window this increase is described by a simple power law. Such a behavior, if interpreted as originating from Bose-Einstein correlations, may indicate a structure of the transverse spatial distribution of the source similar to that recently predicted by Bia\l{}as and Peschanski for color-dipole emission in onium-onium scattering. The power of the rise obtained in the fit agrees with the predicted value.
Single Spin Asymmetry of Vector Meson Production as a Probe of Asymmetry of Parton Scattering
J. Czyzewski
Physics , 1994,
Abstract: Azimuthal asymmetry of vector-meson production in single-transversely polarized proton-proton collisions ($p\up p$) is calculated in the string model of particle production. The asymmetry is generated only during fragmentation of a high-energy quark into hadrons. The obtained asymmetry of the $\rho^\pm$ is opposite in sign to that of $\pi^\pm$ mesons. On the other hand, an asymmetry appearing during parton scattering would contribute with the same sign to that of vector and pseudoscalar mesons. Thus, a combined measurement of both can be used to estimate the contribution to the asymmetry from parton scattering.
Density correlators in a self-similar cascade
A. Bialas,J. Czyzewski
Physics , 1999, DOI: 10.1016/S0370-2693(99)00844-8
Abstract: Multivariate density moments (correlators) of arbitrary order are obtained for the multiplicative self-similar cascade. This result is based on the calculation by Greiner, Eggers and Lipa (reference [1]) where the correlators of the logarithms of the particle densities have been obtained. The density correlators, more suitable for comparison with multiparticle data, appear to have even simpler form than those obtained in [1].
Transverse polarization of quark pairs created in string fragmentation
X. Artru,J. Czyzewski
Physics , 1998,
Abstract: Classical arguments predict that the quark and the antiquark of a pair created during string fragmentation are both transversely polarized in the direction of \hat z \times \vec q_T, where z is the direction of the pull exerted by the string on the antiquark and \vec q_T (-\vec q_T) is the transverse momentum of the quark (antiquark). The existence of this effect at the quantum-mechanical level is investigated by considering two analogous processes involving the tunnel effect in a strong field: (1) dissociation of the positronium atom (2) electron pair creation. In case (1) the positronium is taken in the 3P_0 state to simulate the vacuum quantum numbers J^PC = 0^++. Using the nonrelativistic WKB method, the final electron and positron are indeed found to be transversely polarized along \hat z \times \vec p_T. On the contrary, case (2), treated with the Dirac equation, shows no correlation between transverse polarization and transverse momentum both when the field is uniform and when it depends on z and t. The pair is nevertheless produced in a triplet spin state. The difference between these two results and their relevance to transverse spin asymmetry in inclusive reactions is discussed.
Single Spin Asymmetry in Inclusive Pion Production, Collins Effect and the String Model (revised version)
X. Artru,J. Czyzewski,H. Yabuki
Physics , 1995, DOI: 10.1007/s002880050342
Abstract: We calculated the single spin asymmetry in the inclusive pion production in the fragmentation region of transversely polarized proton-proton collisions. We generated the asymmetry at the level of fragmentation function (Collins effect) by the Lund coloured string mechanism. We compared our results to the presently available experimental data. We obtained a qualitative agreement with the data after assuming that the transverse polarizations of the $u$ and the $d$ quarks in the proton are +1 and -1, respectively, at x_B = 1.
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