The embedded cluster DBSB 48 in the nebula Hoffleit 18: Comparison with Trumpler 14

We derive fundamental parameters of the embedded cluster DBSB 48 in the southern nebula Hoffleit 18 and the very young open cluster Trumpler 14, by means of deep JHK(s) infrared photometry. We build colour-magnitude and colour-colour diagrams to derive reddening and age, based on main sequence and pre-main sequence distributions. Radial stellar density profiles are used to study cluster structure and guide photometric diagram extractions. Field-star decontamination is applied to uncover the intrinsic cluster sequences in the diagrams. Ages are inferred from K-excess fractions. A prominent pre-main sequence population is present in DBSB 48, and the K-excess fraction f(K) = 55 +/- 6% gives an age of 1.1 +/- 0.5 Myr. A mean reddening of A(Ks) = 0.9 +/- 0.03 was found, corresponding to A(v) = 8.2 +/- 0.3. The cluster CMD is consistent with the far kinematic distance of 5 kpc for Hoffleit 18. For Trumpler 14 we derived similar parameters as in previous studies in the optical, in particular an age of 1.7 +/- 0.7 Myr. The fraction of stars with infrared excess in Trumpler 14 is f(K) = 28 +/- 4%. Despite the young ages, both clusters are described by a King profile with core radii R-core = 0.46 +/- 0.05 pc and R-core = 0.35 +/- 0.04 pc, respectively, for DBSB 48 and Trumpler 14. Such cores are smaller than those of typical open clusters. Small cores are probably related to the cluster formation and/or parent molecular cloud fragmentation. In DBSB 48, the magnitude extent of the upper main sequence is Delta K-s approximate to 2 mag, while in Trumpler 14 it is Delta K-s approximate to 5 mag, consistent with the estimated ages. (c) 2008 Elsevier B.V. All rights reserved.

Breaks in the radial oxygen abundance and corotation radius of three spiral galaxies

The correlation between the breaks in the metallicity distribution and the corotation radius of spiral galaxies has been already advocated in the past and is predicted by a chemodynamical model of our Galaxy that effectively introduces the role of spiral arms in the star formation rate. In this work, we present photometric and spectroscopic observations made with the Gemini Telescope for three of the best candidates of spiral galaxies to have the corotation inside the optical disc: IC 0167, NGC 1042 and NGC 6907. We observed the most intense and well-distributed H ii regions of these galaxies, deriving reliable galactocentric distances and oxygen abundances by applying different statistical methods. From these results, we confirm the presence of variations in the gradients of metallicity of these galaxies that are possibly correlated with the corotation resonance.

THE FUNDAMENTAL GROUP OF THE SPACE OF MAPS FROM A SURFACE INTO THE PROJECTIVE PLANE

In this work we compute the fundamental group of each connected component of the function space of maps from it closed surface into the projective space

On Polar Foliations and the Fundamental Group

In this work we investigate the relation between the fundamental group of a complete Riemannian manifold M and the quotient between the Weyl group and reflection group of a polar action on M, as well as the relation between the fundamental group of M and the quotient between the lifted Weyl group and lifted reflection group. As applications we give alternative proofs of two results. The first one, due to the author and Toben, implies that a polar action does not admit exceptional orbits, if M is simply connected. The second result, due to Lytchak, implies that the orbits are closed and embedded if M is simply connected. All results are proved in the more general case of polar foliations.

New Meanings to Old Rituals : The Emergence of Mourning Rituals in Shiʿite Islam

This paper will discuss the emergence of Shiʿite mourning rituals around the grave of Husayn b. ʿAli. After the killing of Husayn at Karbala’ in 61/680, a number of men in Kufa feel deep regret for their neglect to come to the help of the grand­son of the Prophet. They gather and discuss how they can best make penitence for this crime. Eventually, they decide to take to arms and go against the Umayyad army – to kill those that killed Husayn, or be killed them­selves in the attempt to find revenge for him. Thus, they are called the Penitents (Ar. Tawwābūn). On their way to the battlefield they stop at Husayn’s tomb at Karbala’, dedicat­ing themselves to remorseful prayer, crying and wailing over the fate of Husayn and their own sin. When the Penitents perform certain ritual acts, such as weeping and wailing over the death of Husayn, visiting his grave, asking for God’s mercy upon him on the Day of Judgment, demand blood revenge for him etc., they enter into already existing rituals in the pre-Islamic Arab and early Muslim context. That is, they enter into rituals that were traditionally performed at the death of a person. What is new is that the rituals that the Penitents perform have partially received a new content. As described, the rituals are performed out of loyalty towards Husayn and the family of the Prophet. The lack of loyalty in connection with the death of Husayn is conceived of as a sin that has to be atoned. Blood revenge thus be­comes not only a pure action of revenge to restore honor, but equally an expression for true religious conversion and penitence. Humphrey and Laidlaw argue that ritual actions in themselves are not bearers of meaning, but that they are filled with mean­ing by the performer. Accord­ing to them, ritual actions are apprehensible, i.e. they can be, and should be filled with meaning, and the people who perform them try to do so within the context where the ritual is performed. The story of the Penitents is a clear example of mourning rituals as actions that survive from earlier times, but that are now filled with new meaning when they are performed in a new and developing move­ment with a different ideology. In later Shiʿism, these rituals are elaborated and become a main tenet of this form of Islam.

Emotioner och värdegrundsarbete : Om lärare, fostran och elever i en mångkulturell skola

This thesis explores aspects of teachers’ obligation to implement and discuss what are referred to in the Swedish national school curricula as “fundamental values” (“värdegrunden” in Swedish). The aim is to describe and analyze dilemmas in interpretations of and teachers’ work with these fundamental values. Four questions are related to this aim. The first addresses difficulties discussed in conversations between seven upper secondary teachers, during nine meetings over the course of one year. In these conversations the teachers reflected upon how to interpret the fundamental values in relation to their daily practice. The second question focuses on the considerable diversity of Swedish schools and examines the work of the teachers through a perspective of intersectionality. The third question concerns how Martha Nussbaum’s theory of emotions as judgments of value could be used for an understanding of the identified dilemmas. The fourth question focuses on ways in which the participating teachers’ discussions may contribute to a wider discussion about possible aims and circumstances of teachers’ work with the fundamental values. Chapter 2 introduces the theoretical framework of the study, Martha Nussbaum’s (2001) ethical thinking on emotions as judgments of value. She argues that emotions have four common cognitive components. They have (1) external objects, and are directed towards these objects. They are (2) intentional, reflecting a person’s particular point of view, his or her special way of beholding the object, and (3) consist of judgments, i.e. views of how things in the world are. According to Nussbaum’s Aristotelian ethics, emotions also (4) mirror the individual’s vision of what a good human life is like, and the vulnerability of it. The concept of eudaimonia, a fulfilled or flourishing life, is central. Chapter 3 focuses on ideas of ethnicity, and on the specific obligation mentioned in the curriculum of counteracting xenophobia and intolerance in a multicultural society. Chapter 4 discusses various aspects of the teachers’ thoughts on religiosity within Swedish society (often depicted as one of most secular in the world) and within the educational system that is non-denominational. Chapter 5 draws attention to different ways in which the teachers view and teach pupils about sexual orientation. Chapter 6 presents conclusions on potential advantages of and challenges involved in Nussbaum’s Aristotelian theory of emotions, when applied to teachers’ views of and practical work with the fundamental values described in the curriculum. One advantage is that emotions may be intellectually scrutinized and morally assessed, on grounds that are known beforehand and discussed in a democratic process. The non-productive division between emotions, on the one hand, and intellectual and moral capabilities, on the other, is transcended by Nussbaum’s theory. An important challenge is to reflect upon when to discuss the cognitive content of pupils’ emotions, and when it is appropriate to state what is right or wrong, and try to influence pupils accordingly. Keywords: Emotions, vulnerability, values education, religious education, teaching, Martha Nussbaum, ethnicity, religion, sexual orientation.

Natural Theology: A Reevaluation of Christianity's Relationship to the Natural World

In this thesis I offer two separate arguments for the creation of an environmentally friendly Christian theology. These arguments, although interconnected, are roughly divided into the main chapters of the thesis. I will begin in Chapter Two by offering a negative argument against the assumption that the natural world is sinful. In their article Hauerwas and Berkman suggest that the suffering of animals is both an example of the sinful state of the environment and a justification for human separation from an unholy natural environment. In response to this view I will argue in the second chapter that the suffering of animals can be seen as part of God's intentions for our world. Suffering, in both the human and the larger world, is not evidence of a fundamental flaw in natural systems. Instead, the cycle of death and life found in the natural world can be profoundly spiritual.

Life and Death: The Religious, Philosophical and Moral Dilemmas in Medicine

Religious beliefs often play a major role in the decisions that are made in the home and the hospital concerning issues at the beginning and end of life. Only recently, however, due to rapidly advancing medical technology, have religious, moral, and philosophical beliefs taken such a controversial role. One of the major questions that has arisen from these various controversies is whether or not we have the right to posses control over the biological functions of our bodies. The answer is a difficult one, and it may be one that cannot be answered, but the attempt at an answer is what is at the heart of medical ethics.

Discursos e representações acerca da docência em história: os manuais de história para professores do ciclo II do ensino fundamental

O texto apresenta uma proposta de pesquisa sobre os manuais do professor para o ensino de história. Trata inicialmente dos objetivos e dos procedimentos da investigação para depois identificar os temas e as questões que estruturam a pesquisa. Por fim, foi intenção discutir as possibilidades do uso do conceito de “representação” para o estudo dos discursos acerca da docência em história. Manuais do professor, ensino de história, currículo