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Number of results: 4
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Abstract

The paper presents a static load test of a pile with the largest vertical load in Poland to-date up to the force of 23000 kN. The test was performed in the centre of Warsaw on the construction site of a future high-rise building to be the tallest building in European Union. The designed building height measured from the ground level is 310 meters including an 80-metre mast. The foundation of the building was designed as a Combined Piled Raft Foundation (CPRF) utilising the barrettes and diaphragm walls technology. The test was carried out on barrettes with lengths of approx. 28 and 34 m and was aimed to estimate the stiffness (load-settlement relation) of the designed 17.5 metre-long barrette situated below the foundation level. In addition to that a series of extensometric sensors was placed inside the barrette to determine the distribution of the axial force.

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Authors and Affiliations

G. Kacprzak
S. Bodus
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Abstract

Based on real-time multi-domain communication signal analysis architecture, a high-efficiency blind carrier frequency estimation algorithm using the power spectrum symmetry of the measured modulated signal is presented. The proposed algorithm, which utilizes the moving averaged power spectrum achieved by the realtime spectrum analysis, iteratively identifies the carrier frequency in according to the power difference between the upper sideband and lower sideband, which is defined and revised by the estimated carrier frequency in each iteration. When the power difference of the two sidebands converges to the preset threshold, the carrier frequency can be obtained. For the modulation analysis, the measured signal can be coarsely compensated by the estimated result, and the residual carrier frequency error is eliminated by a following carrier synchronization loop. Compared with previous works, owing to the moving averaged power spectrum normalization and the smart iterative step variation mechanism for the two sidebands definition, the carrier frequency estimation accuracy and speed can be significantly improved without increasing the computational effort. Experimental results are included to demonstrate the outstanding performance of the proposed algorithm.

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Authors and Affiliations

Qian Wang
Xiaomei Yang
Xiao Yan
Kaiyu Qin
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Abstract

This study examines different aspects of English lexical borrowings in New Persian, their phonetic adaptation, semantic changes, and social attitudes towards them (i.e. tensions between the prescriptive stand of language purists and the community, especially the young people of Tehran). It is based on the corpus of c. 340 words collected from dictionaries of Modern and colloquial Persian, media, spoken language sources, and data assembled from the Persian Internet sites.

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Authors and Affiliations

Kinga Paraskiewicz
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Abstract

The author, putting the metaphor of “a living dead” to the interpretation, tries to find the common points in the creative output of both writers i.e. Pushkin and Kharms. Both writers, belonging to extremely different literary periods and using other medium, were interested in the most important matters, among others the matter of life and death. Paradoxical metaphor of “a living dead” may imply not only a person being physically exhausted but above all a person deprived of emotions, experience and human reactions, whose fate brings nothing else but the inevitability of death. However, the matter that links both Pushkin and Kharms is the concept of “a coincidence”, which rules human fate, which is unpredictable, hard to avoid and which is a tool at hands of the providence.

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Authors and Affiliations

Jakub Walczak

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