365 research outputs found

    Report on the fisheries of Surinam

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    Fisheries in the Netherlands Antilles

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    The financing of the Netherlands fishing fleet

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    Learning Opportunities And Learning Behaviours Of Small Business Starters: Relations With Goal Achievement, Skill Development, And Satisfaction

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    Learning is a vital issue for small business starters, contributing to short term and long term business performance, as well as to personal development. This study investigates when and how small business starters learn. It specifies the situations that offer learning opportunities, as well as the learning behaviours that small business starters can employ in order to learn from these opportunities. In a cross-sectional, quantitative study of recently started small business founders, learning opportunities and learning behaviours are related to three outcome measures: a performance outcome (goal achievement), a personal growth outcome (skill development), and an affective evaluation outcome (satisfaction). The results show the importance of learning opportunities and learning behaviours in influencing these outcome variables, albeit not always in the directions we hypothesized

    Non-pharmacological and non-psychological approaches to the treatment of PTSD: results of a systematic review and meta-analyses

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    ABSTRACT Background: Non-pharmacological and non-psychological approaches to the treatment of post-traumatic stress disorder (PTSD) have often been excluded from systematic reviews and meta-analyses. Consequently, we know little regarding their efficacy. Objective: To determine the effect sizes of non-pharmacological and non-psychological treatment approaches for PTSD. Method: We undertook a systematic review and meta-analyses following Cochrane Collaboration guidelines. A pre-determined definition of clinical importance was applied to the results and the quality of evidence was appraised using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach. Results: 30 randomised controlled trials (RCTs) of a range of heterogeneous non- psychological and non-pharmacological interventions (28 in adults, two in children and adolescents) were included. There was emerging evidence for six different approaches (acupuncture, neurofeedback, saikokeishikankyoto (a herbal preparation), somatic experiencing, transcranial magnetic stimulation, and yoga). Conclusions: Given the level of evidence available, it would be premature to offer non- pharmacological and non-psychological interventions routinely, but those with evidence of efficacy provide alternatives for people who do not respond to, do not tolerate or do not want more conventional evidence-based interventions. This review should stimulate further research in this area

    Nuchal translucency as a method of first-trimester screening for aneuploidy

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    Objective. To determine the effectiveness of nuchal translucency (NT) screening in predicting aneuploidy and structural abnormalities in a South African population. Study design. Descriptive study. Setting. Chris Hani Baragwanath Hospital fetal medicine unit. Outcome measures. An adjusted risk was derived from the combination of maternal age-related risk and the risk derived from NT screening. A positive screen was denoted by an adjusted risk of more than 1/300 and a negative screen by an adjusted risk of less than 1/300. In order to determine the number of undiagnosed abnormalities in the group, all babies were examined by a paediatrician at birth to detect and describe dysmorphic features. Results. A total of 428 patients underwent first-trimester screening between July 2003 and July 2005. Three per cent were lost to follow-up. Of the 415 patients analysed, 59 screened positive and 356 screened negative. The mean age for both groups of patients was 30.1 years. Of the 57 patients who screened positive, 24 elected to have chorionic villus sampling (CVS). This resulted in the detection of 6 chromosomal abnormalities and 2 structural abnormalities. Among the remaining 356 patients, who had screened negative, 2 had an increase in the adjusted risk when the risk was compared with the background risk, and 1 chromosomal abnormality was detected in this group; 8 elected to have CVS because of a previous history of a chromosomal abnormality, and there were no abnormalities among them. Conclusions. The use of these screening methods has enabled prenatal karyotyping to become cost effective, and allows concentration on pregnancies at highest risk for chromosomal abnormalities, regardless of age.South African Medical Journal Vol. 98 (4) 2008: pp. 295-29

    Cervical intra-epithelial neoplasia in HIV-positive women after excision of the transformation zone – does the grade change?

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    Objective. After previously reporting the presence of disease by cytology findings after treatment for cervical intra-epithelial neoplasia (CIN) in 64.6% of HIV-infected women and in 13.0% of HIV-negative women, we aimed to determine the severity of cytological disease after treatment in HIV-infected women.Methods. We studied HIV-infected (N=571) women treated at the Colposcopy Clinic at Chris Hani Baragwanath Hospital, Gauteng, between April 2003 and December 2006. We compared the initial histology results with Pap smears .6 months later, and evaluated factors associated with reduction in the grade of disease.Results. Mean age was 36.68 (SD+7.33) years; mean parity was 2 (SD+1.46); mean CD4+ count was 242.70 cells/ƒÊl (SD+187.56); 262 (45.80%) were receiving antiretroviral treatment. Persistent disease was detected on the repeat Pap smear in 199 (65.03%); of these, 223 (72.88%) were of a lesser grade than in the original histology results. Of the 152 with histologically confirmed CIN3, 67 (44.08%) had improved to a lesser grade, and 54 (44.63%) had normal cytology results. Among the latter two subject groups (n=141) who had CIN2 histologically, 91 (64.53%) had improved, 29 (20.57%) remained unchanged, and 20 (14.88%) had CIN3; 13 (4.25%) patients with CIN1 returned for follow-up; 11 (84.62%) of these had normal Pap smears and 2 (15.38%) had CIN3.Conclusion. Recurrences were of a lesser degree than initial histology results. This reduction in the grade of disease was related to CD4+ count, complete excision and parity. Antiretroviral therapy use did not improve outcome, perhaps owing to low initial CD4 counts

    Dyadic support exchange and work engagement: An episodic test and expansion of self-determination theory

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    According to the self-determination theory (SDT), individuals flourish when they satisfy their psychological needs. We expand this proposition by testing whether employees satisfy their own needs and improve their own work engagement by providing support to their co-workers. Moreover, we argue that it matters when and to whom the support is provided. We contend that the indirect effect of autonomously motivated support provision on the provider’s work engagement through the provider’s need satisfaction is stronger (1) during episodes that the receiver’s emotional demands are high (vs. low), (2) when the receiver’s learning goal orientation is high (vs. low), or (3) when the receiver’s prove performance goal orientation is low (vs. high). We collected data among 97 dyads of police officers (N = 194 participants) during two time blocks on one working day (N = 227–491 episodes). Multi-level analyses confirmed that support provision related positively to the provider’s episodic work engagement through episodic need satisfaction. As hypothesized, this indirect relationship was stronger during emotionally demanding episodes, or when the receiver was characterized by a low prove performance goal orientation. Learning goal orientation did not moderate the support provision–work engagement relationship. These findings expand SDT by indicating that individuals satisfy their own daily needs by providing support, and by showing that it matters when and to whom support is provided. Practitioner points: Providing help benefits both the beneficiary and the helper Managers should encourage the daily exchange of social resources between employees The exchange of social support between co-workers is crucial when employees face demanding clients
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