On the changes in the physical properties of the ionized region around the Weigelt structures in Eta Carinae over the 5.54-yr spectroscopic cycle

We present HST/STIS observations and analysis of two prominent nebular structures around the central source of Eta Carinae, the knots C and D. The former is brighter than the latter for emission lines from intermediate or high ionization potential ions. The brightness of lines from intermediate and high ionization potential ions significantly decreases at phases around periastron. We do not see conspicuous changes in the brightness of lines from low ionization potential (<13.6 eV) that the total extinction towards the Weigelt structures is that the total extinction towards the Weigelt structures is AsubV =2/0. that the total extinction towards the Weigelt structures is AV = 2.0. Weigelt C and D are characterized by an electron density of that the total extinction towards the Weigelt structures is AV = 2.0. Weigelt C and D are characterized by an electron density of 10exp6.9 cm-3 that does not significantly change throughout the orbital cycle. The electron temperature varies from 5500 K (around periastron) to 7200 K (around apastron). The relative changes in the brightness of He I lines are well reproduced by the variations in the electron temperature alone. We found that, at phases around periastron, the electron temperature seems to be higher for Weigelt C than that of D. The Weigelt structures are located close to the Homunculus equatorial plane, at a distance of about 1240 AU from the central source. From the analysis of proper motion and age, the Weigelt complex can be associated with the equatorial structure called the Butterfly Nebula surrounding the central binary system.Comment: 19 pages, 18 figure

Sideritis ,nolinae a new Iberian endenjie

STÉBING, O., PERIS, J.B. &amp; FIGUEROLA, R. 1993. Sideritis molinae un nuevo endemismo ibérico. Bot. Complutensis IB: 113-121 Se describe una nueva especie del género Sideritis L. para la Flora Ibérica

Shadow Projection: Elicitation of Emotional Response

The study aimed to determine the elicitation of individual emotional response through shadow projection, and to recognize if there is a significant difference between male and female emotional response upon presentation of such stimuli.  The descriptive research design was used to establish the affective component of the target respondent. The researchers believed that projection of shadows or series of animated shadows can be a tool to elicit emotional arousal or response from individual when expose to shadow stimuli.  Respondents were selected using the stratified random sampling method among high school students (N-131), and were assembled for 3-5 minutes visual presentation of a themed animated shadow using a projector device. Series of shadows are projected and after each session, students were requested to accomplish questionnaire which is the main data gathering tool to confirm whether the projected shadows have an emotional effect. In the course of the shadow presentation, students-respondents were earnestly watching each session coupled with occasional burst of noise in reaction to projected shadow scenes, suggesting that the shadow stimuli have emotional effects.  Results revealed that shadow projections have an effect on students-respondents, signifying an elicitation of emotional response.  Statistically, significant difference between male and female responses is apparent. Keywords: Shadow Projection, Shadow Stimuli, Shado

Atomic Processes in Planetary Nebulae and H II Regions

Spectroscopic studies of Planetary Nebulae (PNe) and H {\sc ii} regions have driven much development in atomic physics. In the last few years the combination of a generation of powerful observatories, the development of ever more sophisticated spectral modeling codes, and large efforts on mass production of high quality atomic data have led to important progress in our understanding of the atomic spectra of such astronomical objects. In this paper I review such progress, including evaluations of atomic data by comparisons with nebular spectra, detection of spectral lines from most iron-peak elements and n-capture elements, observations of hyperfine emission lines and analysis of isotopic abundances, fluorescent processes, and new techniques for diagnosing physical conditions based on recombination spectra. The review is directed toward atomic physicists and spectroscopists trying to establish the current status of the atomic data and models and to know the main standing issues.Comment: 9 pages, 1 figur

Spin-orbit interaction in Hartree-Fock calculations

The contribution of the spin-orbit interaction in Hartree-Fock calculations for closed shell nuclei is studied. We obtain explicit expressions for the finite range spin-orbit force. New terms with respect to the traditional spin-orbit expressions are found. The importance of the finite-range is analyzed. Results obtained with spin-orbit terms taken from realistic interactions are presented. The effect of the spin-orbit isospin dependent terms is evaluated.Comment: To be published on Nuovo Cimento

Women on Boards of Philippine Corporations: Quantitative Explorations

This inductive study explored the likelihood and correlates of gender diversity in corporate boards in the Philippines. The improvement of gender diversity on boards is of advocacy and policy interest as the country emerges to middle-high income status. Logistic regression analyses from individuals\u27 (in a directors\u27 talent pool) responses to an online survey showed that females had a likely odds of 0.10 to be on the boards, compared to males. For every one female getting onto boards, 9 would be unable to. Females with advanced degrees were 7x likely to be on boards than female and male counterparts. The odds of a board seat is significantly likely for individuals in some industries compared to a referent industry (government). At the firm level, controlling other variables in the model, as the size of boards are increased by a unit, the odds of having a woman on board increase 1.3 times. This implies that the likelihood of having a woman board of director rises if the size of boards is raised by a third. Corroboration from text mining technique applied to survey responses showed strong correlation across academic degrees (both bachelor\u27s and advanced), industry, and job title; pointing that having more women in C-roles increase the odds of increasing their numbers on corporate boards. Gender diversity on boards have been studied largely from the developed economy lens and/or international comparisons. These quantitative explorations showed pathways that can advance not only understanding and support for extant theories (human capital, resource dependence), but also point to further work (institutional, industry) that can provide levers for policy and advocacy, for countries with similar challenges

Statistical properties of Lorenz like flows, recent developments and perspectives

We comment on mathematical results about the statistical behavior of Lorenz equations an its attractor, and more generally to the class of singular hyperbolic systems. The mathematical theory of such kind of systems turned out to be surprisingly difficult. It is remarkable that a rigorous proof of the existence of the Lorenz attractor was presented only around the year 2000 with a computer assisted proof together with an extension of the hyperbolic theory developed to encompass attractors robustly containing equilibria. We present some of the main results on the statisitcal behavior of such systems. We show that for attractors of three-dimensional flows, robust chaotic behavior is equivalent to the existence of certain hyperbolic structures, known as singular-hyperbolicity. These structures, in turn, are associated to the existence of physical measures: \emph{in low dimensions, robust chaotic behavior for flows ensures the existence of a physical measure}. We then give more details on recent results on the dynamics of singular-hyperbolic (Lorenz-like) attractors.Comment: 40 pages; 10 figures; Keywords: sensitive dependence on initial conditions, physical measure, singular-hyperbolicity, expansiveness, robust attractor, robust chaotic flow, positive Lyapunov exponent, large deviations, hitting and recurrence times. Minor typos corrected and precise acknowledgments of financial support added. To appear in Int J of Bif and Chaos in App Sciences and Engineerin

Furrow and Ridge Soil Nitrogen Mineralization in a Surface Irrigated Artichoke Field

[EN] Quantitative knowledge of soil organic nitrogen net mineralization (NNM) in field conditions is crucial to optimize N fertilization of crops. In a field fertilization trial of artichokes 48 PE tubes were inserted to 20 cm depth in the soil in plant row and irrigation furrows and soil samples were periodically taken during two and a half months to determine NNM. A parallel essay with disturbed samples from the same procedence was carried out in the laboratory at 25ºC and 10 kPa soil water tension. Soil sample position (ridge and furrow) did not significantly determined NNM in the laboratory essay. Although NNM (obtained from laboratory incubation and corrected to field soil temperature and moisture monitored during the experimental period) overpredicted measured field NNM, matching of both was better than those reported in other studies. NNM rate for the 76 days period of incubation predicted from lab data was 22.9 kg N/ ha x 0.1 m while corresponding field values corrected by Br- or Cl- mass balance were 10% and 20% lower respectively in ridge position and under 40% lower by either method in furrow position.The research reported in this paper was supported by a fund from CICYT-INIA (project RTA01-117-C2-2)Lidón, A.; Bautista, I.; De La Iglesia, F.; Oliver Talens, J.; Llorca, R.; Cruz-Romero, G. (2006). Furrow and Ridge Soil Nitrogen Mineralization in a Surface Irrigated Artichoke Field. Acta Horticulturae. (700):71-74. https://doi.org/10.17660/ActaHortic.2006.700.7S717470