442 research outputs found
ІННОВАЦІЇ В НАНОМЕДИЦИНІ ТА НАНОФАРМАЦІЇ
The review examines current trends in the development of biomedical nanotechnology, its application in various fields of medicine and prospects for further development. Among the main directions — monitoring and control of delivery, distribution and use of drugs; nanobiosensors; diagnostics of pathological states; theranostics; use of nanostructured materials in regenerative medicine; nanotoxicology; nanophytopharmacy; green synthesis; development of new nanobiotech devices and nanorobototics.The review examines current trends in the development of biomedical nanotechnology, its application in various fields of medicine and prospects for further development. Among the main directions — monitoring and control of delivery, distribution and use of drugs; nanobiosensors; diagnostics of pathological states; theranostics; use of nanostructured materials in regenerative medicine; nanotoxicology; nanophytopharmacy; green synthesis; development of new nanobiotech devices and nanorobototics
Psychological amortization factors for media impact in development of children from different social groups
The aim of this publication is to analyze the domestic and foreign psychological researches on influence of TV-programs on social, cognitive and emotional development of children. Methods. Methods involve a comparative historical and psychological analysis of papers, manuscripts and archival records of television companies. Results. The present study demonstrates that educational television, subsequently on-line resources for children, affect operative cognitive functions, increase cognitive motivation, and contribute to the formation of other important cognitive and social skills. However, the impact on children on-screen resources depends on the status and education level of the family. Scientific novelty. Much attention is given to the fact that it is the first attempt to provide historical and psychological analysis of world-wide studies of the effects of children’s television, from the main countries-producers of TV and video programs for children of different age – Russia, USA, Germany, France, Israel, etc. Criteria and matrix for comparison of heterogeneous researches, the domestic theory of child development, cultural-historical approach, the theory of stage formation of mental actions, activity theory had been chosen. Practical significance of the research is that these criteria can be used to assess any of the videos, their educational potential. Psychologists involved in the process of television production, this article will help to simulate the learning process taking into account the age of the children and their socio-cultural origin. Цель данной статьи – провести анализ отечественных и зарубежных психологических исследований влияния телевизионных программ на социальное, когнитивное и эмоциональное развитие детей. Методы. Главным методом работы был сравнительный историко-психологический анализ текстов статей и архивных отчетов телекомпаний. Результаты. Исследование показало, что образовательное телевидение, а впоследствии онлайн-ресурсы для детей влияют на оперативные когнитивные характеристики, могут повышать мотивацию достижения, способствовать формированию важных познавательных и социальных навыков. Однако сила воздействия на детей экранных ресурсов зависит от статуса и уровня образования семьи. Научная новизна. Впервые приводится историко-психологический анализ исследований эффектов детского телевидения, привлекаются данные ведущих стран – производителей телеи видеопрограмм для детей разного возраста – России, США, Германии, Франции, Израиля и др. Критерии для сопоставления разнородных исследований сформированы исходя из отечественных теорий детского развития, культурно-исторического подхода, теории поэтапного формирования умственных действий, теории деятельности. Практическая значимость исследования состоит в том, что эти критерии могут использоваться для оценки любых видеосюжетов, их образовательного потенциала. Психологам, вовлеченным в процесс телевизионного образовательного производства, статья поможет смоделировать процесс обучения с учетом возраста детей, а также их социокультурного происхождени
Topological surface state under graphene for two-dimensional spintronics in air
Spin currents which allow for a dissipationless transport of information can
be generated by electric fields in semiconductor heterostructures in the
presence of a Rashba-type spin-orbit coupling. The largest Rashba effects occur
for electronic surface states of metals but these cannot exist but under
ultrahigh vacuum conditions. Here, we reveal a giant Rashba effect ({\alpha}_R
~ 1.5E-10 eVm) on a surface state of Ir(111). We demonstrate that its spin
splitting and spin polarization remain unaffected when Ir is covered with
graphene. The graphene protection is, in turn, sufficient for the spin-split
surface state to survive in ambient atmosphere. We discuss this result along
with evidences for a topological protection of the surface state.Comment: includes supplementary informatio
Analyticity and uniform stability in the inverse spectral problem for Dirac operators
We prove that the inverse spectral mapping reconstructing the square
integrable potentials on [0,1] of Dirac operators in the AKNS form from their
spectral data (two spectra or one spectrum and the corresponding norming
constants) is analytic and uniformly stable in a certain sense.Comment: 19 page
Inverse spectral problems for Sturm-Liouville operators with singular potentials
The inverse spectral problem is solved for the class of Sturm-Liouville
operators with singular real-valued potentials from the space .
The potential is recovered via the eigenvalues and the corresponding norming
constants. The reconstruction algorithm is presented and its stability proved.
Also, the set of all possible spectral data is explicitly described and the
isospectral sets are characterized.Comment: Submitted to Inverse Problem
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