Coexistence of stable limit cycles in a generalized Curie-Weiss model with dissipation

In this paper, we modify the Langevin dynamics associated to the generalized Curie-Weiss model by introducing noisy and dissipative evolution in the interaction potential. We show that, when a zero-mean Gaussian is taken as single-site distribution, the dynamics in the thermodynamic limit can be described by a finite set of ODEs. Depending on the form of the interaction function, the system can have several phase transitions at different critical temperatures. Because of the dissipation effect, not only the magnetization of the systems displays a self-sustained periodic behavior at sufficiently low temperature, but, in certain regimes, any (finite) number of stable limit cycles can exist. We explore some of these peculiarities with explicit examples

primjer analize trogirskoga plemstva od 13. stoljeća do kraja prve austrijske uprave (1805.)

Data from Heyer von Rosenfeld\u27s Wappenbuch des Königreichs Dalmatien (Heraldryof the Kingdom of Dalmatia) is often quoted in encyclopedic biographical reference books, such as the Croatian Register of Nobility and the Croatian Biographical Lexicon. However, a thorough analysis of Tragurin nobility revealed that approximately two thirds of the kindred (86 out of 130)that Ronsenfeld\u27s heraldry lists among Tragurin nobility in fact were not actually members. The findings presented in the article were reached through the application of genealogical analysis of a database compiled based on minutes of municipal councils, municipal archives, family archives, municipal registers, and other sourcesusing appropriate computer applications members of the urban nobility in the period from the 13th century through 1805 were authenticated. Within the examined six centuries, two periods required unique methodological approaches. The main problem when analyzing the medieval period lies in the identification of family membership of individuals frequently recorded only with their personal and their fathers\u27 names (in the 13th and 14th centuries most family names were not formed yet). An additional problem characterizing the period preceding the closure of councils (up to the first half of the 14th century) is the identification of the town councilor. Given the increasing frequency of conferring noble titles since the 16th century onwards and the development of new nobility in the restored communes of Skradin and Nin, archival sources reveal that some individuals would be addressed as nobile or conte while no additional information on what defined their status can be found. Some noblemen permanently lived in specific townshowever, their titles as nobles did not derive from their affiliation with the town council. In addition, noblemen addressed as conte could be granted a national nobility status while also being members of the town councils in the towns where they lived as well as in other towns. Often the noble title would be mentioned only to be polite. Therefore, the origin of noble titles that the sources frequently do not mention needs to be determined. The possible applications of computer-based methods in the analysis of a genealogical database are shown based on the analysis of nuptial matters, which represents a significant parameter of the nobility as an isolated class. Using this method the marriages among nobility members through centuries were analyzed, taking into consideration their class status (nobility, citizenry) and noble origins. In addition, quantitative indicators of endogamy as a measure of closeness of separate isolates were examined

McKean-Vlasov limit for interacting systems with simultaneous jumps

Motivated by several applications, including neuronal models, we consider the McKean-Vlasov limit for mean-field systems of interacting diffusions with simultaneous jumps. We prove propagation of chaos via a coupling technique that involves an intermediate process and that gives a rate of convergence for the $W_1$ Wasserstein distance between the empirical measures of the two systems on the space of trajectories $\mathbf{D}([0,T],\mathbb{R}^d)$

Catecholamines for inflammatory shock: a Jekyll-and-Hyde conundrum

Catecholamines are endogenous neurosignalling mediators and hormones. They are integral in maintaining homeostasis by promptly responding to any stressor. Their synthetic equivalents are the current mainstay of treatment in shock states to counteract myocardial depression and/or vasoplegia. These phenomena are related in large part to decreased adrenoreceptor sensitivity and altered adrenergic signalling, with resultant vascular and cardiomyocyte hyporeactivity. Catecholamines are predominantly used in supraphysiological doses to overcome these pathological consequences. However, these adrenergic agents cause direct organ damage and have multiple ‘off-target’ biological effects on immune, metabolic and coagulation pathways, most of which are not monitored or recognised at the bedside. Such detrimental consequences may contribute negatively to patient outcomes. This review explores the schizophrenic ‘Jekyll-and-Hyde’ characteristics of catecholamines in critical illness, as they are both necessary for survival yet detrimental in excess. This article covers catecholamine physiology, the pleiotropic effects of catecholamines on various body systems and pathways, and potential alternatives for haemodynamic support and adrenergic modulation in the critically ill

Prevención de sustancias psicoactivas en niños a través de actividades deportivas

40 PáginasEn Base a Programas gubernamentales y de ONGs especialmente de las Naciones Unidas este trabajo tiene como objetivo diseñar, aplicar y evaluar un programa de prevención en SPA a través de la promoción de actividades físicas y deportivas para los niños en un colegio Departamental. Se trabajo con 118 niños de preescolar, primero y segundo de primaria. Como metodología se hizo una intervención psicosocial en prevención primaria a través de la educación experiencial. Como resultado se evidenció un incremento en la motivación de los niños hacia el deporte, en la promoción en la salud y algunas técnicas adecuadas de socialización en niños agresivos. Nota: Para consultar la carta de autorización de publicación de este documento por favor copie y pegue el siguiente enlace en su navegador de Internet: http://hdl.handle.net/10818/946

An impact of Croatian journals measured by citation analysis from SCI-expanded database in time span 1975–2001

The aim of this research is to gain an insight into international recognition of the STM (Science, Technology, and Medicine) Croatian journals measured by citations in SCI-expanded database. The sample for the research was a citation analysis of 142 journals in time span 1975– 2001 for papers published in 1975– 1998. More than 90% of those journals are not indexed by SCI-expanded. For the purpose of this research we introduced a new scientometric indicator Normalized number of Citations per 100 Papers (NCP) that allows us direct comparison of the journals from various categories (NCP = 100C/P / IF1989). We chose the year 1989 as a mean value for time span 1975– 2001. By citation analysis we established the influence of errors on recognition of Croatian journals and their articles. Obtained results show that an article-to-article link is not found for 32% of cited items. The most frequent type of error is journal title, 37%, which indicates that approximately one third of Croatian journals can not be found when searching by journal title only. Some Croatian journals, even not indexed by SCI-expanded, showed relatively high rank in an impact, i.e. their NCP is higher than 100, and number of citations per paper is higher than 1

Evaluating emotional distress and health-related quality of life in patients with heart failure and their family caregivers:Testing dyadic dynamics using the Actor-Partner Interdependence Model

Purpose: 1) To compare levels of emotional symptoms and health-related quality of life between patients with heart failure and their family caregivers; and 2) to examine whether patients’ and caregivers’ emotional symptoms were associated with their own, as well as their partner’s health-related quality of life. Method: In this cross-sectional study, 41 patients-caregiver dyads (78% male patients, aged 68.6 years; and 83% female caregivers, aged 65.8 years) completed all nine dimensions of the Brief Symptom Inventory and the Minnesota Living with Heart failure Questionnaire. Dyadic data were analysed for 6 sub-scales of the Brief Symptom Inventory, using the Actor–Partner Interdependence Model. Results: There were no statistically significant differences in emotional symptoms and health-related quality of life between patients with heart failure and their caregivers. Patients’ and caregivers’ emotional symptoms were associated with their own health-related quality of life. Caregivers’ anxiety, phobic anxiety, obsession-compulsion, depression and hostility negatively influenced their partner’s (i.e. the patient’s) health-related quality of life. There were no partner effects of patients’ emotional symptoms on the health-related quality of life of caregivers. Conclusions: The results of this study suggest that patients may be particularly vulnerable to the emotional distress, i.e. thoughts, impulses and actions of their caregivers. It may be possible to improve patients’ health-related quality of life by targeting specific detrimental emotional symptoms of caregivers