3D Reconstruction of Cultural Values at the Regional History Museum-Veliko Tarnovo

The project paper presents the work done by the Regional History Museum – Veliko Tarnovo (RHM) on 3D reconstruction of cultural values and objects from the Veliko Tarnovo region – the St Peter and St Paul church in Veliko Tarnovo, the chorus of the metropolitan Nativity church in Arbanassi and the St. Dimitar church in Arbanassi

Targeting Minimum Heat Transfer Area for Heat Recovery on Total Sites

This paper upgrades the Total Site integration methodology, when accounting for a trade-off between capital and heat recovery by selection of optimal temperature levels for intermediate utilities and therefore, decrease capital cost. Heat transfer area for recuperation in Total Site is a two-fold problem and it depends on the Sink Profile on one side and on the Source Profile on another. The resulting temperature of intermediate utility is a result of a trade-off since the heat transfer area on Source side is decreasing, when temperature of IM is decreasing, however increased on Sink side. In the opposite higher intermediate utility temperature leads to higher area on the Source side and lower on Sink side. The temperature of each intermediate utility may be varied between specified lower and upper bounds subject to serving the Sink and Source Profiles

Capital Cost Targeting of Total Site Heat Recovery

Exploiting heat recovery on Total Site level offers additional potential for energy saving through the central utility system. In the original Total Site Methodology (Klemeš et al., 1997) a single uniform ΔTmin specification was used. It is unrealistic to expect uniform ΔTmin for heat exchange for all site processes and also between processes and the utility system. The current work deals with the evaluation of the capital cost for the generation and use of site utilities (e.g. steam, hot water, cooling water), which enables the evaluation of the trade-off between heat recovery and capital cost targets for Total Sites, thus allowing to set optimal ΔTmin values for the various processes. The procedure involves the construction of Total Site Profiles and Site Utility Composite Curves and the further identification of the various utility generation and use regions at the profile-utility interfaces. This is followed by the identification of the relevant Enthalpy Intervals in the Balanced Composite Curves. A preliminary result for evaluation of heat recovery rate and capital cost can be obtained

Central planning, market and subsistence from a tundra perspective: Field experience with reindeer herders in the Kola Peninsula

This paper is based on field experience in the tundra camp of a reindeer-herding brigade with mixed ethnic background (Komi, Sami, Nenets, Russians) belonging to the ex-Sovkhoz of Krasnoschelie. Its purpose is to situate the new critical issues facing the reindeer-herding collectives after the economic collapse in Russia in 1998. My main argument is that the increasing economic isolation of the tundra periphery forces the herders to redefine their relationship with both the centre(s) and the other tundra actors. Reindeer herding on the Kola Peninsula is analysed in relation to its heterogeneous economic system defined by the old Sovkhoz-like management and the new Western buyer of reindeer meat. Furthermore, the social environment in the herding territories has changed since the deterioration of the central planning economy, implying new renewable resources' users. After massive loss of jobs, militaries, miners and geologists came into the tundra for substantial hunting and fishing and so became actors in the local informal economy. Finally, tundra-located herders and hunters seem to be somewhere unified by a discourse against the town-based administrative power and economic actors such as mining industry. Therefore herders have to deal with both an old administrative system in the agrocentre and new realities in the tundra. Based on a case study of herding/hunting activities in a tundra camp, the paper analyses the social relationships between the different actors in the post-Soviet Kola tundra and express their quest for solutions

« Consommer la mobilité » en Bulgarie postsocialiste (1990-2000) : sujets et objets

Analysing the social connotation of material consumption among the newly rich in Bulgaria, this article examines the dynamics of postsocialist identity. The material object is regarded as a means of expression for the newly rich individual to establish an identity within the new social context. Principal purchases — the house and car—must materialize the individual's success. However, these objects create a contradiction between the modernity of global mobility, and the sense of belonging to a place that stems from the perpetuation of local traditions. It is the family, where the most material investment is made, that must reconcile social mobility with cultural continuity. Résumé Analysant la connotation sociale de la consommation matérielle des nouveaux riches en Bulgarie, cet article vise la dynamique identitaire postsocialiste. L'objet matériel est abordé comme moyen d'expression de l'acteur lors de son interaction avec le nouveau contexte social. Les premiers objets d'investissement - la maison et la voiture - doivent matérialiser la réussite individuelle. Ils expriment cependant une identité contradictoire, oscillant entre la modernité d'une mobilité mondialiste et une appartenance locale gérée par des valeurs traditionnelles. C'est la famille, lieu privilégié d'investissement matériel, qui doit réconcilierla mobilité sociale et l'ancrage culturel

THE EFFECT OF FEED RATE AND CUTTING SPEED TO SURFACE ROUGHNESS DURING HOLE BORING OF ALUMINUM WITH ANTI-VIBRATION BORING BAR

this study is focusing on the experimental investigation of the effects of cutting parameters on surface roughness during hole boring of 8062 aluminums with anti-vibration boring bar on lathe. Several experiments were conducted with different cutting conditions. Based on the results and using “Minitab 19” software, a mathematic model was made to predict the surface quality in connection with different cutting conditions. Finally, an experiment analysis was carried out to verify the analytical results.

The acoustics of Contemporary Standard Bulgarian vowels: A corpus study

A comprehensive examination of the acoustics of Contemporary Standard Bulgarian vowels is lacking to date, and this article aims to fill that gap. Six acoustic variables—the first three formant frequencies, duration, mean f0, and mean intensity—of 11 615 vowel tokens from 140 speakers were analysed using linear mixed models, multivariate analysis of variance, and linear discriminant analysis. The vowel system, which comprises six phonemes in stressed position, [e a O i ɤ u], was examined from four angles. First, vowels in pretonic syllables were compared to other unstressed vowels, and no spectral or durational differences were found, contrary to an oft-repeated claim that pretonic vowels reduce less. Second, comparisons of stressed and unstressed vowels revealed significant differences in all six variables for the non-high vowels [e a O]. No spectral or durational differences were found in [i ɤ u], which disproves another received view that high vowels are lowered when unstressed. Third, non-high vowels were compared with their high counterparts; the height contrast was completely neutralized in unstressed [a-ɤ] and [O-u] while [e-i] remained distinct. Last, the acoustic correlates of vowel contrasts were examined, and it was demonstrated that only F1, F2 frequencies and duration were systematically employed in differentiating vowel phonemes

A cross-varietal continuum of unstressed vowel reduction: evidence from Bulgarian and Turkish

We compare speech production data from three Bulgarian and two Turkish varieties with respect to spectral and durational reduction of unstressed nonfront unrounded vowels, and ensuing height neutralisation. Istanbul Turkish lies at one end of a reduction continuum, with only non-neutralising, gradient F1 frequency undershoot that correlates with duration. Monolingual East Bulgarian lies at the opposite end: unstressed, underlyingly non-high vowels raise considerably and merge with their high counterparts. The Bulgarian speech of bilingual Turkish–Bulgarian speakers from the same region of eastern Bulgaria shows less reduction and neutralisation; perhaps surprisingly, it resembles the reduction pattern of West (Standard) Bulgarian, while at the same time also being gradient, probably under the influence of Turkish. The bilinguals’ Turkish speech, on the other hand, exhibits more neutralisation than Istanbul Turkish, but less than their own Bulgarian, which in turn suggests prosodic transfer from these speakers’ Bulgarian to their Turkish

3D MODELING, SIMULATION AND ANALYSIS OF ANTI-VIBRATION BORING BAR

This study presents the capabilities of the engineering dynamic analysis according to the Finite Elements Method (FEM), demonstrated on a 3D virtual prototype of a part "Anti-vibration boring bar" for lathe. The analysis is performed with help of CAE system Ansys. The modal frequencies are determined which are necessary for optimizing the constructive parameters of the product during the design stage