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Background: For millennia, women with multiple sexual partners have been labeled and stigmatized as whores, prostitutes, promiscuous and commercial sex workers. However, there is little literature comprehensively addressing factors related to reproductive health in this group. Aim: The aim of the current study is to elucidate the reproductive health matters of women who have multiple sexual partners. Setting and design: The data use for this research is taken from the Jamaica Reproductive Health Survey, 2007. Stratified random sampling is used to design the sampling frame. Materials and Methods: The current study extracts a sample of 225 respondents (from 7,168 women ages 15-49 years) who indicate having had multiple sex partners. Statistical analysis used: Data are analyzed using the Statistical Packages for the Social Sciences for Windows, Version 21.0. Multiple logistic regressions were used to analyze factors that explained current method of contraception. Results: Women with multiple sex partners on average are involved with men at least 9.5 years their senior, and 72% of them have become pregnant. Currently, contraception use can be explained by social class (middle class, Odds ratio (OR) = 0.08, 95% CI= 0.01 – 0.59); age at first sexual intercourse (OR = 0.90, 95% CI = 0.68 – 1.21); employment status (employed, OR = 5.07, 95% CI = 1.06 – 24.36); and marital status (married or common-law, OR = 0.09, 95% CI = 0.02 – 0.38). Conclusion: The early sexual initiation among young women is a public health problem because of the increased incidence of teenage pregnancy and increased incidence of sexually transmitted diseases, which must be addressed with the same intensity and resource allocation used to fight against Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome (HIV/AIDS). © 2015, Chevron Publishing Corporation. All rights reserved.

Background: The bullying phenomenon, an aspect of aggression, has gained attention in many countries thus making it a very important issue in schools. Many studies have been done on this issue resulting in deeper analysis and review on the matter because the matter covers physical, verbal or psychological acts of aggression that may be intentional, and, which may occur once or repeated over time. Objectives: This study seeks to examine the following research questions: 1) How is bullying manifested in grades 4-6 in primary schools identified for this study?; 2) What are the specific bullying behaviours exhibited by class bullies in grades 4-6?; 3) How does the behavior of bullies affect the conduct of classes?; 4) What are the characteristics of the students who are targeted by in-class bullies?, and 5) What strategies are currently used by the teachers to deal with bullying in class? Materials and Methods: Two hundred students were conveniently identified (n = 200) for the study in the three schools of which 153 participated in the survey (i.e., response rate of 76.5%). The sample comprises of pupils in grades 4, 5 and 6, which 67 pupils in grades 4 and 5, and 66 in the 6th grade. Likewise 50 students ages 9, 10, 11 and 12 years were recruited for participation, with the least respondents being ages 9 years (46%) and the most being 11 years old (94%). Results: The principals and guidance counselor reported that the bullying phenomenon is a daily occurrence at their schools and that on a daily basis they are called upon to address at least 3 cases and a maximum of 10 cases of bullying. All the parents in this study noted that the bullying phenomenon is widespread in primary schools in St. Thomas and that schools are now considered an unsafe environment. Of the 26 surveyed parents in this research, 92.3% indicated that ‘schools are no longer fun for children to be anymore because of the bullying phenomenon. Conclusion: Now there is empirical evidence that the bullying phenomenon is creating psychological issues that extend beyond the aggressor to those around him/her. The psychology of the bullying phenomenon is far-reaching more than a social issue and as such clearly the psychology of the matter is crying out for public health efforts and/or intervention in Jamaica. © 2015, Chevron Publishing Corporation. All rights reserved.

Introduction: Like medicine, public health practitioners seek to understand causes of mortality, practices of humans and issues that can change population conditions, in order to preserve and care for life. The murder pandemic has been such in Jamaica that the World Bank sponsored a qualitative study on crime in urban areas in Jamaica in the late 1990s to provide a platform to guide policy intervention and programmes. As a result this study will fill the gap in the literature by providing the evidence to support that divorce and marriage are public health concerns from the perspective of murders. Objective: To evaluate the role of divorce and marital relationships on murders. Materials and methods: The data for this study are taken from various Jamaica Government Publications. The period for this work is from 1950 through 2013. Data were recorded, stored and retrieved using the Statistical Packages for the Social Sciences (SPSS) for Windows, Version 21.0. The level of significance that is used to determine statistical significance is less than 5% (0.05). Ordinary least square (OLS) regression analyses and curve estimations were used to determine models and best fitted models. Results: On average, annually, 523 Jamaicans are murdered (± 484), with there being 9,531 marriages (±22,747) and 904 divorces (±468). Logged marriage rate and divorce rate are factors of murder rate, with both independent factors accounting for 82.2% of the variability in the murder rate. Both factors are positively correlated with the murder rate, with the divorce rate accounting for most of the variance in the murder rate (R2 = 79.2%). Conclusion: Death can be extremely devasting to families, however, murder among married couples can severely disrupt the lives of both families along with any children from such relationship. © 2014, Chevron Publishing Corporation. All rights reserved.

Introduction: The educational system of Jamaica is designed whereby performance is assessed based on formal evaluation (or test). This test culture places immense pressure on students at the primary level to successful complete some examinations in order for placement into select schools. Objectives: The present study seeks to evaluate psychological stress among students who take the G.S.A.T examination in the Corporate Area schools in Jamaica and assess whether psychological stressors influence academic performance. Methods: For this research, mixed methodology was employed to investigate the phenomenon of stressors among students who took the 2013 G.S.A.T examination. For the survey instrument (questionnaire), the large volume of data were stored, retrieved and analyzed using the Statistical Packages for the Social Sciences (S.P.S.S) for Windows version 21.0 (SPSS Inc; Chicago, IL, USA). Findings: The overall academic performance of the surveyed respondents was high (75.8 ± 19.4; 95% CI: 72.4- 79.2), with students in the preparatory school (92.4 ± 4.1) outperformed those in the primary school (71.0 ± 19.4)- t-test =10280, P < 0.0001. The level of stress experienced by those in the public school was greater (29.9 ± 6.0; 95% CI: 28.9 - 30.1) than those in the private school (26.0 ± 3.9; 95% CI: 24.5- 27.4- t-test=-3.300, P=0.001). Five factors determine overall academic performance: 1) stress level, 2) parental involvement, 3) school type, 4) nervous on taking the first G.S.A.T examination and 5) school choice (traditional or non-traditional high school). The five factors accounted for 35.8 percentage points of the variance in overall academic performance (Adjusted R2). Conclusion: Parental involvement is crucial in academic performance among students who took the 2013 G.S.A.T examination and students experienced moderately high stress, which offers some insight in the examination and the information can be used to better guide policy formulation. © 2015 Bourne PD, et al.

We present the visual orbits of two long-period spectroscopic binary stars, HD 8374 and HD 24546, using interferometric observations acquired with the CHARA Array and the Palomar Testbed Interferometer. We also obtained new radial velocities from echelle spectra using the APO 3.5 m and Fairborn 2.0 m telescopes. By combining the visual and spectroscopic observations, we solve for the full, three-dimensional orbits and determine the stellar masses and distances to within 3% uncertainty. We then estimate the effective temperature and radius of each component star through Doppler tomography and spectral energy distribution analyses, in order to compare the observed stellar parameters to the predictions of stellar evolution models. For HD 8374, we find masses of M 1 = 1.636 ± 0.050M ⊙ and M 2 = 1.587 ± 0.049M ⊙, radii of R 1 = 1.84 ± 0.05R ⊙ and R 2 = 1.66 ± 0.12R ⊙, temperatures of K and K, and an estimated age of 1.0 Gyr. For HD 24546, we find masses of M 1 = 1.434 ± 0.014M ⊙ and M 2 = 1.409 ± 0.014M ⊙, radii of R 1 = 1.67 ± 0.06R ⊙ and R 2 = 1.60 ± 0.10R ⊙, temperatures of K and K, and an estimated age of 1.4 Gyr. HD 24546 is therefore too old to be a member of the Hyades cluster, despite its physical proximity to the group.

This paper details speckle observations of binary stars taken at the Lowell Discovery Telescope, the WIYN telescope, and the Gemini telescopes between 2016 January and 2019 September. The observations taken at Gemini and Lowell were done with the Differential Speckle Survey Instrument (DSSI), and those done at WIYN were taken with the successor instrument to DSSI at that site, the NN-EXPLORE Exoplanet Star and Speckle Imager (NESSI). In total, we present 378 observations of 178 systems, and we show that the uncertainty in the measurement precision for the combined data set is ∼2 mas in separation, ∼1°-2° in position angle depending on the separation, and ∼0.1 mag in magnitude difference. Together with data already in the literature, these new results permit 25 visual orbits and one spectroscopic-visual orbit to be calculated for the first time. In the case of the spectroscopic-visual analysis, which is done on the ternary star HD 173093, we calculate masses with a precision of better than 1% for all three stars in that system. Twenty-one of the visual orbits calculated have a K dwarf as the primary star; we add these to the known orbits of K-dwarf primary stars and discuss the basic orbital properties of these stars at this stage. Although incomplete, the data that exist so far indicate that binaries with K-dwarf primaries tend not to have low-eccentricity orbits at separations of one to a few tens of astronomical units, that is, on solar system scales. © 2021 Institute of Physics Publishing. All rights reserved.

We report 370 measures of 170 components of binary and multiple-star systems, obtained from speckle imaging observations made with the Differential Speckle Survey Instrument at Lowell Observatory's Discovery Channel Telescope in 2015 through 2017. Of the systems studied, 147 are binary stars, 10 are seen as triple systems, and 1 quadruple system is measured. Seventy-six high-quality nondetections and 15 newly resolved components are presented in our observations. The uncertainty in relative astrometry appears to be similar to our previous work at Lowell, namely, linear measurement uncertainties of approximately 2 mas, and the relative photometry appears to be uncertain at the 0.1-0.15 mag level. Using these measures and those in the literature, we calculate six new visual orbits, including one for the Be star 66 Oph and two combined spectroscopic-visual orbits. The latter two orbits, which are for HD 22451 (YSC 127) and HD 185501 (YSC 135), yield individual masses of the components at the level of 2% or better, and independent distance measures that in one case agrees with the value found in the Gaia DR2 and in the other disagrees at the 2σ level. We find that HD 22451 consists of an F6V+F7V pair with orbital period of 2401.1 ± 3.2 days and masses of 1.342 ± 0.029 and 1.236 ± 0.026M⊙. For HD 185501, both stars are G5 dwarfs that orbit one another with a period of 433.94 ± 0.15 days, and the masses are 0.898 ± 0.012 and 0.876 ± 0.012M⊙ . We discuss the details of both the new discoveries and the orbit objects. © 2020. The American Astronomical Society. All rights reserved..