356 research outputs found
The contribution of N.F. Filatov the national pediatrics (to the 170 anniversary from the birthday of N.F. Filatov) (1847-1902)
No full textIt was noted that during 25 years of scientific and teaching activity N.F. Filatov has made a significant contribution to the development of world Pediatrics. He is the author of over 70 scientific works, including “a Short textbook of pediatric diseases” (1893), aged 12 editions, and “Clinical lectures” (1900). His monograph “Lectures on acute infectious diseases” (1885) through 4 editions, “Semiotics and diagnosis of childhood diseases” (1890) – 9 editions, it is translated into German, Czech, Italian, Hungarian and French. In the monographs and manuals N.F. Filatov studied many of pokoleniya-pediatricians. He described the infectious disease named Filatov scarlatinal rubella. She was later described by the British physician Duxom; one of the presently used names of the disease – a disease Filatov-Dukes. In the first edition of "Lectures on infectious diseases" N.F. Filatov described is not known until the time of infectious mononucleosis, which he called idiopathic inflammation of the cervical lymphatic glands. The disease is now often called a disease Filatov. In 1895 N.F. Filatov, described an important diagnostic sign of measles is the appearance of catarrhal period of illness 1-2 days before appearance of rash spot grayish-white lesions on the mucosa of lips and cheeks. As was established later, this sign was first described by A.P. Belsky in 1890, then regardless of him F. Filatov, and in 1896 Koplik. In the literature, this symptom is known as spots Belsky-Filatova-Koplik. N.F. Filatov described the pathogenesis of some forms of edema syndrome in children, published works on prolonged afebrile forms of the flu. N.F. Filatov developed a clinical-physiological direction in Pediatrics. He created a large school of domestic pediatricians. Among his students were V.I. Molchanov and G.N. Speransky.</jats:p
The potential affordances of enterprise wikis for creating community in research networks
Full text linkIn this paper, we describe some of the affordances, (the specific enabling features or characteristics), of an enterprise wiki to meet the needs of a developing community of practice. The Social Innovation Network (SInet) is a nascent research network that spans the social sciences, education and commerce at the University of Wollongong. It will use the enterprise wiki software Confluence to assist in the development of communities of practice across its groups and subgroups. This paper, describes some of the features of the software and how it might be used to perform some of the common activities identified by Wenger (nd) as contributing to the development of community
The activities N.F. Pokrovsky – the first trustee of training district in Odessa
Full text linkУ статті на основі опублікованих джерел та архівних документів проаналізовано основні
напрямки діяльності першого піклувальника попечителя Одеського навчального округу
Н. Ф. Покровського, його внесок у розвиток освітніх установ округу, роботи по керівництву цензурним комітетом.В статье на основе опубликованных источников и архивных документов проанализированы основные направления деятельности первого попечителя Одесского учебного округа Н.Ф. Покровского, охарактеризован
его вклад в развитие образовательных учреждений округа, работа по руководству цензурным комитетом.In the article on the basis of the published sources and archival documents the author analyzes basic directions
of activity of the first trustee of the Odessa educational district N.F. Pokrovskiy. His contribution to development of
educational institutions of the district and his managing a censorship committee are studied
The activities N.F. Pokrovsky – the first trustee of training district in Odessa
No full textУ статті на основі опублікованих джерел та архівних документів проаналізовано основні
напрямки діяльності першого піклувальника попечителя Одеського навчального округу
Н. Ф. Покровського, його внесок у розвиток освітніх установ округу, роботи по керівництву цензурним комітетом.В статье на основе опубликованных источников и архивных документов проанализированы основные направления деятельности первого попечителя Одесского учебного округа Н.Ф. Покровского, охарактеризован
его вклад в развитие образовательных учреждений округа, работа по руководству цензурным комитетом.In the article on the basis of the published sources and archival documents the author analyzes basic directions
of activity of the first trustee of the Odessa educational district N.F. Pokrovskiy. His contribution to development of
educational institutions of the district and his managing a censorship committee are studied
The activities N.F. Pokrovsky – the first trustee of training district in Odessa
No full textУ статті на основі опублікованих джерел та архівних документів проаналізовано основні
напрямки діяльності першого піклувальника попечителя Одеського навчального округу
Н. Ф. Покровського, його внесок у розвиток освітніх установ округу, роботи по керівництву цензурним комітетом.В статье на основе опубликованных источников и архивных документов проанализированы основные направления деятельности первого попечителя Одесского учебного округа Н.Ф. Покровского, охарактеризован
его вклад в развитие образовательных учреждений округа, работа по руководству цензурным комитетом.In the article on the basis of the published sources and archival documents the author analyzes basic directions
of activity of the first trustee of the Odessa educational district N.F. Pokrovskiy. His contribution to development of
educational institutions of the district and his managing a censorship committee are studied
[[alternative]]Research of Moussorgsky/Ravel :"Pictures at an Exhibition"
No full text[[abstract]]Abstract
Although educated as a young officer, Moussorgky was completely a musician all his Life. With tragic characteristic, he was the most talented one among "the Russian Five". Mussorgsky composed very few piano works and even fewer orchestral works. His "Pictures at an Exhibition", born in piano form, was not popular until Ravel's orchestral arrangement was performed nearly half century later. This research about "Pictures at an Exhibition", Moussorgsky's most famous work, also one of the author's favorite, is to analyze this work.
A literature review was made including the life time of Moussorgsky, the characteristics of his music and the progress of composing "Pictures at an Exhibition". Emphases ". Emphases were also placed upon the painter Hartman, the manusaript and the premiere. Analyses of the work itself including the structure, form, the relation with the pictures, the music language. After a brief introduction of the different arrangements, studies were made regarding Maestro Ravel's orchestral arrangement. The conducting of "Pictures at an Exhibition" was discussed in detailes based on several CDs and LD, live concerts, interviews with conductors, and personal interpentation of the author.
Though emphasized on realism, Moussorgsky's colorful fantasy made people experience the natural Rassian spririt through music. With the efforts of so many arrangers and the master work of Ravel, it was proved that how possible and how progressive this piece was. No wonder Moussorgsky was considered as the most master musician of interpretating Russian soul .
Cracking and induced steel stresses of reinforced and prestressed piles during driving
No full textThe problem of steel stresses during driving of reinforced and prestressed piles in case of concrete failure is analysed in this report using a momentum trap model that includes amplitude and shape of the reflected compressive wave. Special reference is made to the different performance of reinforced and prestressed concrete piles with respect to concrete and steel failure - cracking and yielding. The significant phenomena, bond behavior, prestressing level, prestressing rate and ratio of stress wave length and pile length, are clearly distinguished for assumed linear elastic material behavior which may serve as a basis for further numerical nonlinear analysis.Design & ConstructionCivil Engineering and Geoscience
Stress wave propagation in reinforced concrete piles during driving
No full textThe aim of this report is to give an insight into what happens in a reinforced concrete pile during driving, and to contribute to design requirements for the loading case pile driving. Since the behaviour of stress waves in piles is influenced by a various number of parameters, the fewest of which result in linear relations, models are presented to calculate the initial stress wave, the reflection at the pile tip and the behaviour at a crack in the concrete. These models lead to differential equations that can be solved analytically for assumed linear material behaviour. This allows to follow the stress wave in the pile to every point and time of special interest. Case studies for different wave shapes are presented and the influence of nonlinearities discussed. Nonlinear material behaviour may be introduced, however this makes numerical solutions necessary and requires quantitative knowledge of the different parameters. Special interest is given to reflected tensile waves that may lead to cracks in the concrete. Different crack criteria are discussed and the steel stress in the reinforcement crossing the crack is calculated. The necessary amount of reinforcement then can be evaluated.Design & ConstructionCivil Engineering and Geoscience
Wireless communication systems using signal space diversity
No full textThe next generation communication devices are foreseen to not only support a large variety of applications, ranging from speech, audio and video graphics but also be able to maintain connection with many other devices (rather than a single base station) in different changing environments. The aim of the dissertation is to analyze digital modulation and coding techniques for wireless communication systems in realistic transmission scenarios. Furthermore, an important objective of the dissertation is to explore the degrees of freedom that can make the wireless communication systems overall more adaptive, thereby, resulting in systems that either consume less power for a given performance or offer more performance for a given amount of average energy than conventional systems. The techniques/algorithms analyzed in the dissertation are versatile and suitable for both narrowband as well as wideband wireless communication systems for indoor and low-mobility outdoor scenarios. Signal space diversity, also known as modulation diversity, is used to increase the overall received signal-to-noise ratio (SNR) and to reduce the probability of error. A thorough performance analysis of modulation diversity systems is presented in the thesis to understand the differences from conventional systems in narrowband and wideband channels and also to achieve the maximum possible performance. General methods are presented to optimize the system parameters and to exploit the degrees of freedom available. Channel coding, cooperative demodulation and decoding, and orthogonal frequency division multiplexing (OFDM) schemes are coupled with modulation diversity to reduce the overall power consumption and improve system performance.Electrical Engineering, Mathematics and Computer Scienc
Interference cancellation techniques for low power wireless sensors
No full textNon-coherent on-off keying (OOK) receivers are preferred in ultra low power (ULP) wireless devices as they consume less power when compared to receivers based on other modulation schemes. However, these devices are highly susceptible to co-channel interference (CCI). Therefore, interference cancellation (IC) techniques for ULP non-coherent OOK receivers are investigated in this thesis. Various IC techniques are discussed in literature. However, the non-coherent OOK receiver architecture calls for the design of new low complexity IC techniques. The main constraint of the system is imposed by the analog front end that uses a simple square law detector to down-convert the RF signals to baseband and there is also only single radio frequency (RF) chain. The challenge is to mitigate CCI under these constraints and improve the detection performance. The non-coherent detection of OOK signals requires the knowledge of the signal to noise ratio (SNR) of the incoming signal. Therefore, SNR estimation plays an important role in non-coherent OOK receivers. Thus the scope of this thesis is twofold. Firstly, the SNR estimation and non-coherent detection techniques are proposed for OOK signals. Secondly, the interference mitigation techniques are proposed for the case of continuous wave (CW) CCI and OOK modulated interferers. The problems of the proposed techniques for the case of M-ary phase shift keying (MPSK) modulated interferers are also investigated. Finally, the implementation of the SNR estimation techniques on real time hardware platform is discussed.TelecommunicationsTelecommunicationsElectrical Engineering, Mathematics and Computer Scienc
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