The rheological properties of self-compacting concrete are closely influenced by temperature and the time. Previous studies which aim was to research the effect of temperature on self-compacting concrete workability, showed that the behaviour of fresh SCC at varying temperatures differs from that of normal vibrated concrete. The paper presents the study of rheological properties of fresh self-compacting concrete mixtures made with portland, blast furnace and component cement. Two types of superplasticizers were used. It was proven that temperature has a clear effect on workability; it can be reduced by selecting the appropriate superplasticizer and cement.
This paper addresses an interesting issue in name theory, specifically the relationship between toponyms and spatial representations, as well as the cultural differences manifesting themselves in connection with these. Studies have shown that the name model (a general knowledge of names) created based on the mental representation of names is partly language and culture dependent. Thus, the knowledge of the speaker on how reliably the toponyms correlate with the actual features of the landscape or whether they should only be considered as labels identifying an area is culturally determined. This, in turn, influences the extent to which name-users may rely on them in structuring space and in creating a cognitive map.
Though current conservation policy in Poland refl ects world trends and approaches to action, compliance with all of its assumptions would entail the Polish authorities remodelling both the system and the methods by which natural resources are managed. On the one hand this requires a change of approach to the management of natural resources from the traditional, purely nature-related one, to a more modern inter-disciplinary one that takes in social and economic conditioning. On the other hand, a system need to be put in place to allow these ideas to be introduced in practice. The work described here deals with the participation of different stakeholder groups in nature management, with this regarded as a method of increasing the latter’s effi ciency. The many examples (of good practice) presented by the author well illustrate the wisdom of the approach, which often seems to achieve success where it is attempted.
Researchers have paid significant attention on hyperjerk systems, especial hyperjerk ones with chaos. A new hyperjerk system with seven terms and two parameters is analyzed. Chaotic attractors as well as coexisting attractors are displayed by the hyperjerk system. Thus it is a new multi-stable chaotic hyperjerk system. Further properties of the proposed hyperjerk system such as circuit design and backstepping-based control and synchronization are reported.
The paper addresses the problem of constrained pole placement in discrete-time linear systems. The design conditions are outlined in terms of linear matrix inequalities for the Dstable ellipse region in the complex Z plain. In addition, it is demonstrated that the D-stable circle region formulation is the special case of by this way formulated and solved pole placement problem. The proposed principle is enhanced for discrete-lime linear systems with polytopic uncertainties.
The authors established the chemical and phase compositions of grain fractions of the magnesia carbon scrap disintegrated using industrial cone crushers. The investigations included chemical and XRD analyses and optical investigations. The contents of admixtures: SiO2, CaO, Fe2O3 and Al2O3 increase with the decreasing size of the scrap grain fractions, whereas the C/S ratio decreases in finer and finer fractions due to changes of the phase composition. These relations are caused by the presence of low-fusible silicate phases, characterized by their cleavage and brittleness. Such phases were mainly derived from the graphite ash containing a high silica content. The scrap after removing its finest grain fractions can be recycled and utilized for producing the magnesia-carbon refractory materials. However, the finest grain fractions may be used, e.g. as a component of gunite mixes. Many years of experience collected by the ArcelorMittal Refractories Ltd., Krakow, Poland in the field of refractory scrap utilization has also been presented.
The study aims to examine the role of Self-Forgiveness in shaping the Human Flourishing of the adults. Two hundred fourteen participants (18 to 30 years) comprising 100 males (Mean Age = 22.15(1.61)) and 114 females (Mean Age = 22.00(1.95)) were chosen for the study. Self-forgiveness (Mudgal & Tiwari, 2017a) and Mental Health Continuum-Short Form (Keyes, 2005) were used as the tools. Self-forgiveness comprises Realization & Reparation, Guilt, Attribution and overall self-forgiveness (sum of the first three) while Human Flourishing consists of Hedonic and Eudaimonic (Social plus Psychological) Well-Being. The aggregate of Hedonic and Eudaimonic is overall Human Flourishing. The findings suggested no gender differences in Self-Forgiveness of the participants. Conversely, gender differences were observed in all the dimensions of Human Flourishing in favour of males. Irrespective of gender, Realization & Reparation was positively correlated with Hedonic, Social, Psychological and Eudaimonic Well-Being as well as Human Flourishing except for Guilt and Attribution that showed small positive or negative correlations. Irrespective of gender, Overall Self-Forgiveness correlated positively with all the dimensions of Flourishing. Gender and Realization & Reparation emerged as the significant predictors accounting for significant variance in all the dimensions of Flourishing while Guilt and Attribution did not. The findings suggested that remorse, easy acceptance of wrongdoing, repairing the relationship with self and others, ability to minimize negative emotions towards self, monitoring others’ positive behaviours and acknowledgements of valued and close relationships were the psychological mechanisms that may underlie the predictive strengths of self-forgiveness in regulating flourishing.
The paper discusses the results of a study into almost 2000 corrections found in the Old English gloss to the fi rst 50 Psalms of the Eadwine Psalter, a post-Conquest manuscript produced in mid-twelfth century. It contains the three Latin versions of the Psalter translated by St. Jerome, each accompanied by a gloss: the Gallicanum – Latin, the Romanum – Old English, and the Hebraicum – Anglo-Norman. The exact purpose behind the production of this psalter, its role, as well as the reason for introducing extensive corrections to the Old English gloss remain unknown. By making the corrections the focal point of the study, the present paper builds a case for identifying Thomas Becket (or his associates) as the patron of the Eadwine Psalter, which seems to provide comprehensive answers to some baffl ing questions concerning this manuscript.
This study focuses on the diachronic development of the discourse marker after all in English. Unlike other approaches by Traugott (1997) or Lewis (2007), the present analysis suggests that the uses of after all are not contingent on conventionalization, whereby stable meaning-form pairings emerge. The alternative proposed here is that the justificative and concessive uses of this and similar expressions follow naturally from the meanings of the individual lexical items found in these expressions. Thanks to the intuitive connection between the original meaning and the newly acquired uses, this discourse marker does not require as much consolidation as in the case of grammaticalized forms where the connection is less obvious.
Nasal consonants feature in phonological systems of both Polish and Welsh, yet, apparently, they are active in a different manner and to a different degree. The paper aims first at establishing the ‘players’ – the prototypical segments and their nonprototypical variants. The relevant inventories seem to be comparable, however, the contextually and non-contextually dependent realizations vary considerably in the two systems. Polish nasal consonants do not appear to have terribly complex phonology, their occurrence and phonotactics seems to be dictated through use (Bybee, 2001). Nasal segments in Welsh, on the other hand, are actively involved in the alternation of Initial Consonant Mutation, where they occur as strengthened equivalents of plosives through (possibly) assimilation (Buczek, 1995). It remains to be discovered whether nasals in general (and the so-called voiceless nasals in particular) are independent categories or rather, additionally they feature as nonprototypical variants of plosives. There is, indeed, substantial overlap here. Secondly, the paper looks at certain instances of what appears to be sonorant lenition in Welsh, where nasals [m] and [n] are broken into complex consonantal diphthongs [mh] and [nh] respectively (Pilch, 1975). In its entirety, this paper examines the two systems, hinting at the similarities and exploring the points of difference, especially in cases where the similar phonetic realizations possibly result from different categorical membership.