Complexifier Versus Factorization and Deformation Methods For Generation of Coherent States of a 1D NLHO: I. Mathematical Construction

Three methods: complexifier, factorization and deformation, for construction of coherent states are presented for one dimensional nonlinear harmonic oscillator (1D NLHO). Since by exploring the Jacobi polynomials $P_n^{a,b}$'s, bridging the difference between them is possible, we give here also the exact solution of Schr\"odinger equation of 1D NLHO in terms of Jacobi polynomials.Comment: To be Published in: Int. J. Geom. Meth. Mod. Physic

STIS spectroscopy of newborn massive stars in SMC N81

Using Hubble Space Telescope observations with STIS, we study the main exciting stars of N81, a high excitation compact Hii region in the Small Magellanic Cloud (SMC). These far UV observations are the first spectroscopic measurements of stars in such a region and reveal features characteristic of an O6-O8 stellar type. The astonishing weakness of their wind profiles and their sub-luminosity (up to ~ 2 mag fainter in Mv than the corresponding dwarfs) make these stars a unique stellar population in the Magellanic Clouds. Our analysis suggests that they are probably in the Hertzsprung-Russell diagram locus of a particularly young class of massive stars, the so-called Vz luminosity class, as they are arriving on the zero age main sequence.Comment: 9 pages, 3 figure

Nursing Students’ viewpoints about Problems of Clinical education

Background:Clinical training is fundamental part of nursing education program and causes the student to apply the theoretical knowledge in caring for patients. The nature and duties of nursing in community is such a special issue that doubles the sensitivity of coordination between theoretical courses and clinical services. About half of nursing and midwifery training time is spent on clinical training but there are many factors that affect the process of clinical education. Therefore the aim of this study is assessing the problems of clinical training in nursing students in clinical environments in Nursing and Midwifery faculty of Isfahan. Methods:This descriptive analytical study was performed on 75 nursing students in their last term. A two-part questionnaire included questions on demographic information and factors to assess clinical training problems in six major areas of problems: problems related to learner, clinical instructor, clinical environment, patient, educational program and clinical evaluation. Data analysis was performed in SPSS software. Results:After analyzing the data the following results were obtained: most of the problems were related to the clinical instructor 78%, learners 73%, clinical environment 71%, clinical training program 66%, clinical evaluation 60% and patient-related problems 43%. Conclusions:Results of this article showed that there are problems in clinical training in nursing, especially in fields that are related to learner and clinical instructor. Due to the fact that Clinical Education is the fundamental part of clinical training and in this type of training, students in interaction with instructors and the environment, apply the learned concepts in the clinical field, by understanding nursing and midwifery clinical education problems, the planners will be able to design good educational programs to increase the quality of health services to all people. Therefore, to reach this goal there is a need to more assessment and continuous clinical evaluation processes

Compact star clusters of the LMC HII region N11C

Based on imaging and spectroscopy obtained at the ESO NTT telescope and using an efficient image analysis algorithm, we study the core of the LMC OB association LH13, particularly the two compact stellar clusters Sk-6641 and HNT in the HII, region N11C. We resolve Sk-6641 into 15 components and for the first time the HNT cluster into 70 stars, and derive photometry for the members. Moreover, from medium resolution spectroscopy we determine the spectral types for sixteen stars in N11C. We compare the color-magnitude diagrams of the clusters with that of the field stars and discuss the cluster ages. With an age of ~100 Myr, the HNT cluster appears significantly older than the very young (< 5 Myr) Sk-6641 starburst. We suggest that most of the `field' O-stars in the core of N11C have actually been ejected from Sk-6641 through dynamical interactions in the compact cluster. The properties of the Sk-6641 and HNT clusters suggest that we are viewing different star formation regions lying at different distances along the same line of sight.Comment: 12 pages, 8 figure

Nursing students’ viewpoints about problems of clinical education

Background:Clinical training is fundamental part of nursing education program and causes the student to apply the theoretical knowledge in caring for patients. The nature and duties of nursing in community is such a special issue that doubles the sensitivity of coordination between theoretical courses and clinical services. About half of nursing and midwifery training time is spent on clinical training but there are many factors that affect the process of clinical education. Therefore the aim of this study is assessing the problems of clinical training in nursing students in clinical environments in Nursing and Midwifery faculty of Isfahan. Methods:This descriptive analytical study was performed on 75 nursing students in their last term. A two-part questionnaire included questions on demographic information and factors to assess clinical training problems in six major areas of problems: problems related to learner, clinical instructor, clinical environment, patient, educational program and clinical evaluation. Data analysis was performed in SPSS software. Results:After analyzing the data the following results were obtained: most of the problems were related to the clinical instructor 78%, learners 73%, clinical environment 71%, clinical training program 66%, clinical evaluation 60% and patient-related problems 43%. Conclusions:Results of this article showed that there are problems in clinical training in nursing, especially in fields that are related to learner and clinical instructor. Due to the fact that Clinical Education is the fundamental part of clinical training and in this type of training, students in interaction with instructors and the environment, apply the learned concepts in the clinical field, by understanding nursing and midwifery clinical education problems, the planners will be able to design good educational programs to increase the quality of health services to all people. Therefore, to reach this goal there is a need to more assessment and continuous clinical evaluation processes

Bending of light in novel 4DD Gauss-Bonnet-de Sitter black holes by Rindler-Ishak method

We study the bending of light in the space-time of black holes in four-dimensional Einstein-Gauss-Bonnet theory of gravity, recently proposed by Glavan and Lin \cite{Glavan}. Using Rindler-Ishak method, the effect of Gauss-Bonnet coupling on the bending angle is studied. We show that a positive Gauss-Bonnet coupling gives a negative contribution to the Schwarzschild-de Sitter deflection angle, as one would expect.Comment: 10 pages, 1 figure. To appear in EP