OALib Journal期刊

ISSN: 2333-9721




2018 ( 2 )

2017 ( 16 )

2016 ( 15 )

2015 ( 81 )


匹配条件: “Sonia Mihaela Bogos” ,找到相关结果约5883条。
Cryptanalysis of the Double-Moduli Cryptosystem  [PDF]
Sonia Mihaela Bogos, Serge Vaudenay
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2012, DOI: 10.4236/ijcns.2012.512088
Abstract: In this article we present a lattice attack done on a NTRU-like scheme introduced by Verkhovsky in [1]. We show how, based on the relation between the public and private key, we can construct an attack which allows any passive adversary to decrypt the encrypted messages. We explain, step by step, how an attacker can construct an equivalent private key and guess what the original plaintext was. Our attack is efficient and provides good experimental results.
The rotational velocities evaluation for the engine mounts gyroscopic loads
Stefan BOGOS
INCAS Bulletin , 2013, DOI: 10.13111/2066-8201.2013.5.2.2
Abstract: The default values for the maximum pitch and yaw speeds from CS 23.371, seem to be too conservative that would result in overstressing of the structure.A simplified dynamic simulation is proposed to evaluate more confident velocities for a specific aircraft. The yawing condition is related to the “sudden rudder deflection” and a maneuver with “lateral gust”. The pitching conditions are a result of a “sudden elevator deflection”. The model takes into account the nonlinear effects of the aerodynamic coefficients and controls efficiencies.
Laboratorul de cercetare i ncerc ri higrotermice, instrument de verificare experimental a calit ii construc iilor, echipamentelor i gestion rii eficiente a energiei
Constantin Miron,Constantin Bogos
Urbanism. Arhitectura. Constructii , 2010,
Abstract: This paper seeks to present the technical conditions and the main types of research and experimental verifications being conducted by the Laboratory of Research and Hygrothermal Testing for Materials, Building Elements and Parts at INCD URBAN-INCERC Iasi Branch. Another purpose of this paper is to describe the subjects of the research work done by the group of researchers within the Laboratory over the past 15 years. The main research papers, tests, expert studies, studies on the behavior of in-use buildings may be grouped in the following categories: verification of the quality of new products, products for the hygrothermal conservation and rehabilitation, for materials, elements, closing systems used in constructions and installations; homologation of the new building solutions or hygrothermal rehabilitation existing solutions; identification of the stationary regime specific thermal and physical parameters – resistance to thermal transfer, the condensation risk, the temperature range at the surface of closing elements, the global thermal transfer coefficient; determination of the behavior in case of water vapor diffusion; the accumulation of dew within the structure; determination of the behavior of thermally difficult areas: decks, joining areas, studs, areas with clamps, sashes, lintels etc; experimental determination of the behavior of non-stationary thermal regime closing elements – thermal inertia index, damping and dephasing of the thermal wave, phase displacement; technical agrementation of products, and climatic qualification of industrial equipments, under extreme climatic conditions.
Expander Dermatension is a New Method of Surgical Replacement of Skin Defects
R.A. Bogos’yan
Sovremennye Tehnologii v Medicine , 2011,
Abstract: There have been shown the treatment possibilities of patients with post-burn and post-traumatic cicatricial deformity and defects of various localizations using the method of expander dermatension. The effectiveness of a new way of a dosage dermatension management in a constant mode by liquid pumping into a ballon-expander through infusomat (Patent No.2271157) has been studied. An optimal solution administration rate for different expanders has been selected. There has been described the way of objective control of soft tissue condition during distraction using thermovision studies (Patent No.2306847). The use of the techniques suggested enables to reduce the number of complication on dermatension stage and reduce the period of in-patient treatment by 1.5—2 times.
Indian Streams Research Journal , 2012,
Abstract: A man without education is no more than an animal. The growth and development of a state is primarily dependent upon the quality of education given to the people. In India Right to Education Act (RTE) was passed on 4th August 2009 which provides for free and compulsory education for children between the age of 6 and 14 years. The Act came into force on 1 April 2010. The problems on the path of education of children includes child labour, misery of girl child in India and poor quality of education. Article 51A of constitution also makes its obligatory for parent or guardian as the case may be to provide opportunities for education to his child or ward between the age of six and fourteen years. Although RTE Act is a major landmark in the history of India but there are certain limitations of the Act which if removed then education will reach every child in India which is their right. “There is only one purpose in the whole of Life –Education”.“Otherwise what is the use of me and women, land and wealth”. – Swami Vivekananda“Education is the most powerful weapon which you can use to change the world”.– Nelson Mandela
Bioethical Questions in Brazilian Scientific Research  [PDF]
Sonia Vieira
International Journal of Clinical Medicine (IJCM) , 2014, DOI: 10.4236/ijcm.2014.516130

It is considered here that the ethical behavior of the Brazilian scientific community leaves a lot to be desired. Motives for ethical lapses can be summed up by one only: the haste to grow at any price in order to earn prestige and wealth, setting at naught those who don’t have the political support of the institution. With this intent, many researchers publish whatever they can, neglecting the fact that scientific research should serve the interests of the community—not their own.

Early Childhood Education: Difficulties Creating and Changing Daily Practice  [PDF]
Sonia Kramer
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.56048

This paper is based on research carried out with children and adults at early childhood education institutions in Rio de Janeiro, Brazil. The research goals were to identify interactions between adults and children and to rethink pedagogical practice. The theoretical-methodological framework was based on language and culture studies, the sociology of childhood and anthropology. After studying children and adults in different contexts and early childhood education public policies and practice, the results present challenges of changing and creating early education practices in difficult contexts, especially with regard to the creation and use of spaces intended for children. This is the focus of the text, which is structured in three sections. Section one presents the theoretical and methodological issues. The second section analyzes three case studies developed in public pre-schools situated in different cities in the state of Rio de Janeiro. Section three presents conclusions and priorities for intervention and change concerning children, adults and their interactions.

The Onset of Schizophrenia in Adolescence: Developments from a Structural and Clinical Point of View  [PDF]
Sonia Alberti
Open Journal of Medical Psychology (OJMP) , 2014, DOI: 10.4236/ojmp.2014.32014
Abstract: In 1899, Kraepelin identified schizophrenia as early dementia. The precocity of the onset of schizophrenia may be verified in psychotic episodes in the clinic of adolescence, which this article explores both from the point of view of psychoanalytic theory, and from the point of view of its clinic, in particular regarding the transference of the psychotic adolescent. It departs from the importance of differential diagnosis in relation to neurosis, using the guidelines of Freud about the loss of reality, then studies the contributions of Lacan in relation to that which returns from the real when not included in the symbolic. Finally, it articulates the drive theory to identify the issue of jouissance in transference.
Tumor Microenvironment in the Brain
Mihaela Lorger
Cancers , 2012, DOI: 10.3390/cancers4010218
Abstract: In addition to malignant cancer cells, tumors contain a variety of different stromal cells that constitute the tumor microenvironment. Some of these cell types provide crucial support for tumor growth, while others have been suggested to actually inhibit tumor progression. The composition of tumor microenvironment varies depending on the tumor site. The brain in particular consists of numerous specialized cell types such as microglia, astrocytes, and brain endothelial cells. In addition to these brain-resident cells, primary and metastatic brain tumors have also been shown to be infiltrated by different populations of bone marrow-derived cells. The role of different cell types that constitute tumor microenvironment in the progression of brain malignancies is only poorly understood. Tumor microenvironment has been shown to be a promising therapeutic target and diagnostic marker in extracranial malignancies. A better understanding of tumor microenvironment in the brain would therefore be expected to contribute to the development of improved therapies for brain tumors that are urgently required due to a poor availability of treatments for these malignancies. This review summarizes some of the known interactions between brain tumors and different stromal cells, and also discusses potential therapeutic approaches within this context.
The Human Transcriptome: An Unfinished Story
Mihaela Pertea
Genes , 2012, DOI: 10.3390/genes3030344
Abstract: Despite recent technological advances, the study of the human transcriptome is still in its early stages. Here we provide an overview of the complex human transcriptomic landscape, present the bioinformatics challenges posed by the vast quantities of transcriptomic data, and discuss some of the studies that have tried to determine how much of the human genome is transcribed. Recent evidence has suggested that more than 90% of the human genome is transcribed into RNA. However, this view has been strongly contested by groups of scientists who argued that many of the observed transcripts are simply the result of transcriptional noise. In this review, we conclude that the full extent of transcription remains an open question that will not be fully addressed until we decipher the complete range and biological diversity of the transcribed genomic sequences.

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