In this work we propose the partial Wiener index as one possible measure of branching in phylogenetic evolutionary trees. We establish the connection between the generalized Robinson–Foulds (RF) metric for measuring the similarity of phylogenetic trees and partial Wiener indices by expressing the number of conflicting pairs of edges in the generalized RF metric in terms of partial Wiener indices. To do so we compute the minimum and maximum value of the partial Wiener index WT,r,n\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} (...) \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$W\left(T,r, n\right)$$\end{document}, where T\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$T$$\end{document} is a binary rooted tree with root r\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$r$$\end{document} and n\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$n$$\end{document} leaves. Moreover, under the Yule probabilistic model, we show how to compute the expected value of WT,r,n\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$W\left(T,r, n\right)$$\end{document}. As a direct consequence, we give exact formulas for the upper bound and the expected number of conflicting pairs. By doing so we provide a better theoretical understanding of the computational complexity of the generalized RF metric. (shrink)

The text deals with the emergence of a specific Jewish counterculture in the wake of the civil rights movement and the anti-war movement in the USA in the late 1960s and early 1970s. Martin Buber’s philosophy of dialogue, Erich Fromm’s humanism and the religious existentialism of Abraham Joshua Heschel had a significant impact on the ideas of the young Jewish generation and influenced their striving for a renewal of Jewish life. Although the three Jewish thinkers differed in their forms of (...) expression, they had in common a relentless critique of existing state of affairs and fought for a just society. Whether it be Buber’s communitarian society, Fromm’s humanist socialism or Heschel’s free society imbued with religion – they offered answers to the frustrated young generation and pointed the way to the “spiritual revolution” they longed for. Thus they became prophets for them. (shrink)

MaxEnt inference algorithm and information theory are relevant for the time evolution of macroscopic systems considered as problem of incomplete information. Two different MaxEnt approaches are introduced in this work, both applied to prediction of time evolution for closed Hamiltonian systems. The first one is based on Liouville equation for the conditional probability distribution, introduced as a strict microscopic constraint on time evolution in phase space. The conditional probability distribution is defined for the set of microstates associated with the set (...) of phase space paths determined by solutions of Hamilton’s equations. The MaxEnt inference algorithm with Shannon’s concept of the conditional information entropy is then applied to prediction, consistently with this strict microscopic constraint on time evolution in phase space. The second approach is based on the same concepts, with a difference that Liouville equation for the conditional probability distribution is introduced as a macroscopic constraint given by a phase space average. We consider the incomplete nature of our information about microscopic dynamics in a rational way that is consistent with Jaynes’ formulation of predictive statistical mechanics, and the concept of macroscopic reproducibility for time dependent processes. Maximization of the conditional information entropy subject to this macroscopic constraint leads to a loss of correlation between the initial phase space paths and final microstates. Information entropy is the theoretic upper bound on the conditional information entropy, with the upper bound attained only in case of the complete loss of correlation. In this alternative approach to prediction of macroscopic time evolution, maximization of the conditional information entropy is equivalent to the loss of statistical correlation, and leads to corresponding loss of information. In accordance with the original idea of Jaynes, irreversibility appears as a consequence of gradual loss of information about possible microstates of the system. (shrink)

In the previous papers, it was demonstrated that applying the principle of maximum information entropy by maximizing the conditional information entropy, subject to the constraint given by the Liouville equation averaged over the phase space, leads to a definition of the rate of entropy change for closed Hamiltonian systems without any additional assumptions. Here, we generalize this basic model and, with the introduction of the additional constraints which are equivalent to the hydrodynamic continuity equations, show that the results obtained are (...) consistent with the known results from the nonequilibrium statistical mechanics and thermodynamics of irreversible processes. In this way, as a part of the approach developed in this paper, the rate of entropy change and entropy production density for the classical Hamiltonian fluid are obtained. The results obtained suggest the general applicability of the foundational principles of predictive statistical mechanics and their importance for the theory of irreversibility. (shrink)

Over the last two decades, facial symmetry has been intensively researched. The present article aims to summarize empirical research concerning relations between facial symmetry and health and facial symmetry and personality. A systematic review of the literature shows that facial symmetry is one of the most influential visual markers of attractiveness and health, important for mate selection, while asymmetry can be considered a consequence of an individual’s inability to resist environmental and genetic stressors during development of the organism. However, in (...) spite of evidence suggesting that preferences for facial symmetry are deeply rooted in our evolutionary history, a strong connection between facial symmetry and health is demonstrated only in studies measuring perceived health, while there is only scarce evidence corroborating the link between symmetry and actual health. The interconnections between facial symmetry and personality have not yet been extensively researched. Less than a dozen studies have addressed that issue and they have reached different conclusions. Some evidence suggests that facial symmetry signals personality attributes that indicate good psychological health, while other findings imply that pro-social personality traits negatively correlate with facial symmetry. (shrink)

Numerous studies have explored what people do in their free time, but only a few of them have tried to explain why. In Study 1 we therefore aimed to obtain a detailed picture of the ways in which students spend their free time, but also we wanted to investigate their motivation for engaging in a specific activity that they consider to be their favourite. We found that the highest percentage of 585 students, who participated in Study 1, spend most of (...) their free time on social interactions, reading and leisure with family. However, although they did not spend much time on physical activities, participants reported them as their favourite ones. An analysis of variance showed no differences in hedonic motives for free time activities, while eudaimonic motives did differ. In Study 2, we investigated intrinsic motivation for physical exercise on a new sample of 202 students, and found that recreational athletes have significantly higher intrinsic motivation compared to physically less active participants. (shrink)

Analyses of household urban agriculture have demonstrated a wealth of personal, economic, social, moral or political uses for self-provisioned food, yet have often understood the practice itself as merely a production process. This ‘means-to-an-end’ perspective is especially pronounced in studies of locations undergoing economic hardship. Urban gardening in postsocialist Central and Eastern Europe and the former Soviet Union has been framed as an element of an informal economy, enabling household savings, access to informal networks and avoidance of industrial goods deemed (...) ethically dubious. In this article, I present evidence from participant observation and interviews with urban gardeners conducted in 2014–2015 in Ljubljana, Slovenia, where urban agriculture proliferated during the European debt crisis that began in 2009. I interpret the material through an ecological perspective that focuses on labour in nature and highlights the interconnected, situated role of the gardener. My analysis of gardening styles, behaviours, attitudes and life-narratives of long-term urban growers challenges the utilitarian interpretation by arguing that urban agriculture in Ljubljana is in fact a means in itself—not an informal economy, but a narrative practice. While undertaken to ameliorate the effects of economic hardship, household urban agriculture first and foremost promotes individual wellbeing and restores a stable sense of self. I outline a series of self-making benefits of working with cultivated, edible nature that helped gardeners reconstruct their biographies after their previously established self-making processes collapsed in the economic downturn. (shrink)

Zusammenfassung Seit der Entdeckung des Gilgamesch-Epos am Ende des 19. Jahrhunderts wird von der Forschung angenommen, dass dieses Epos den Inhalt der homerischen Epen beeinflusst habe. Der Beitrag legt dar, wann und auf welchem Wege der kulturelle Transfer zwischen Mesopotamien und Griechenland stattgefunden haben kann. Ferner werden mehrere Passagen aus den homerischen Epen diskutiert, in denen die Forschung eine Beeinflussung durch das Gilgamesch-Epos erkennen möchte. Gezeigt wird, dass diese Ansicht zum Teil subjektiv ist und zum Teil auf veralteten Ausgaben des (...) Gilgamesch-Epos beruht. In einem Exkurs wird zuletzt eine aktuelle These zur Datierung der Ilias analysiert. (shrink)

Provability logic is a modal logic for studying properties of provability predicates, and Interpretability logic for studying interpretability between logical theories. Their natural models are GL-models and Veltman models, for which the accessibility relation is well-founded. That’s why the usual counterexample showing the necessity of finite image property in Hennessy-Milner theorem (see [1]) doesn’t exist for them. However, we show that the analogous condition must still hold, by constructing two GL-models with worlds in them that are modally equivalent but not (...) bisimilar, and showing how these GL-models can be converted to Veltman models with the same properties. In the process we develop some useful constructions: games on Veltman models, chains, and general method of transformation from GL-models/frames to Veltman ones. (shrink)

We determined the prevailing ethical climate at three different schools of a single university, in order to explore possible differences in the ethical climate related to different research fields: the School of Electrical Engineering, Mechanical Engineering, and Naval Architecture; the School of Humanities and Social Sciences; and the School of Medicine. We used the Ethical Climate Questionnaire to survey the staff at the three schools, and used the research integrity and organizational climate survey for early-stage researchers at the three schools. (...) The dominant ethical climate type perceived collectively at the three university schools was Laws and professional codes, which is associated with the cosmopolitan level of analysis and the ethical construct of principle. Individually, the same climate predominated at the schools for engineering and humanities, but the School of Medicine had the Self-interest ethical climate, which is associated with the individual level of analysis and the egoism ethical construct. In the RIOC survey, early-stage researchers from the three university schools did not differ in their perceptions of the organizational research integrity climate, or in their perceived individual, group or organizational pressures. Our study is the first, to the best of our knowledge, to show differences in perceived ethical climate at a medical school compared to other schools at a university. Further studies are needed to explore the reasons for these differences and how they translate to organizational outcomes, such as job satisfaction, commitment to the institution and dysfunctional behaviour, including research misconduct. (shrink)

Istraživanje je provedeno na uzorku učenika trećih razreda strukovnih škola i gimnazija. Od uključenih učenika, gimnaziju je pohađalo njih 253, a srednje strukovne škole 352 učenika. Cilj istraživanja bio je ispitati neke specifičnosti u percepciji učenika srednjih škola o važnosti nastavnih predmeta iz područja likovnih umjetnosti. Napravljena je posebna analiza samo za dvije odabrane zavisne varijable: važnost nastavnih predmeta iz područja likovnih umjetnosti za razvoj pamćenja i sposobnosti za učenje ostalih nastavnih predmeta te interes i zadovoljstvo sudjelovanjem u likovnim aktivnostima. (...) Rezultati pokazuju da ne postoji statistički značajna razlika između učenika gimnazija i strukovnih škola u procjeni sudjelovanja u aktivnostima nastave likovne umjetnosti te u procjeni važnosti likovnih aktivnosti za razvoj pamćenja i sposobnosti za učenje ostalih predmeta. Postoji statistički značajna spolna razlika u procjeni sudjelovanja u aktivnostima nastave likovne umjetnosti te u procjeni važnosti likovnih aktivnosti za razvoj pamćenja i sposobnosti za učenje ostalih predmeta. Može se zaključiti da ispitanici nisu bili u mogućnosti procijeniti koliko i u koju svrhu će im u daljnjem školovanju i budućem zanimanju koristiti kompetencije stečene u nastavi likovne umjetnosti. This research was carried out on a sample of third year pupils of vocational schools and gymnasiums. Of the surveyed pupils, 253 of them attended gymnasiums, while 352 attended vocational secondary schools. The goal of this research was to examine specificities in secondary school pupils’ perceptions of the importance of subjects in the field of the fine arts. A separate analysis was undertaken for only two selected dependent variables: the importance of subjects in the field of the fine arts for developing memory and the ability to learn other subjects, and interest in and satisfaction with participation in fine arts activities. The results show that there is no statistically significant difference between the estimation of gymnasium and vocational school pupils regarding participation in fine arts activities or in their estimation of the importance of fine arts activities in developing memory and the ability to learn other subjects. There is a statistically significant gender difference in the estimation of participation in fine arts activities, as well as in the estimation of the importance of fine arts activities in developing memory and the ability to learn other subjects. It can be concluded that respondents were unable to estimate how much or why they would use competencies gained in fine arts teaching in their continued education or their future careers. (shrink)

This research was carried out on a sample of third year pupils of vocational schools and gymnasiums. Of the surveyed pupils, 253 of them attended gymnasiums, while 352 attended vocational secondary schools. The goal of this research was to examine specificities in secondary school pupils’ perceptions of the importance of subjects in the field of the fine arts. A separate analysis was undertaken for only two selected dependent variables: the importance of subjects in the field of the fine arts for (...) developing memory and the ability to learn other subjects, and interest in and satisfaction with participation in fine arts activities. The results show that there is no statistically significant difference between the estimation of gymnasium and vocational school pupils regarding participation in fine arts activities or in their estimation of the importance of fine arts activities in developing memory and the ability to learn other subjects. There is a statistically significant gender difference in the estimation of participation in fine arts activities, as well as in the estimation of the importance of fine arts activities in developing memory and the ability to learn other subjects. It can be concluded that respondents were unable to estimate how much or why they would use competencies gained in fine arts teaching in their continued education or their future careers. (shrink)