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71.
The economic-history literature of eighteenth-century British America is rich in its quantitative measures of staple production, output prices and demography, but relatively thin in its analysis of input prices. This paper addresses one aspect of this gap by, for the first time, applying a hedonic regression technique to land sales in Britain's most important colony. The results indicate that land values increased over the course of the late eighteenth century, despite economic challenges such as the American Revolution and a series of punishing hurricanes in the 1780s. The model estimates that values reached their peak in 1800, only to decline during the first decade of the nineteenth century.  相似文献   
72.
This paper explores the developmental stages and phases of a new blended learning social work course at a rural Australian university. The background to the development of the discipline will be presented, with an exploration of the challenges and outcomes of designing an interactive online environment for a single cohort of on-campus and distance students. Themes explored cover engaging students, motivation, acculturation and facilitation. The paper concludes with the presentation of data from wave one of a longitudinal survey to ensure student expectations are being met, while at the same time providing an accredited programme of study.  相似文献   
73.
A group of 209 married, fecund women in rural Bangladesh were studied prospectively for 24 months from 1969 to 1971 to define some of the biological and sociological factors relating to fertility performance. These women were selected from a larger study population of 112,000 that had been followed with a daily house-to-house vital registration programme since 1966. The selected women were interviewed bi-weekly and were asked questions about menstruation, pregnancy, lactation, husband's occupational absences, and monthly urine tests for pregnancy were taken. The results for 193 non-contracepting women revealed that the seasonal pattern of births previously observed in this population could be associated with a corresponding seasonal pattern of conceptions and that this was due to a seasonal trend in fecundability. The highest conception rates were in the coolest months of the year. Post-partum lactational amenorrhoea was very prolonged, averaging 17 months for women with a surviving child. The appearance of the first post-partum menstrual flow (onset of ovulation) also had a seasonal trend which could not be adequately explained. The median waiting time to conception, once menstruation had resumed was eight months. This interval was influenced by seasonal fluctuations, as well as by the age of women and by husbands' absences. The foetal wastage rate was 15·0 per 100 conceptions, with 62 per cent of the foetal losses occurring during the second month of gestation. Overall, the average birth interval was 33 months, with the prolonged lactational amenorrhoea accounting for almost 45 per cent of this interval.   相似文献   
74.

Background

Perinatal mortality remains a major international problem responsible for nearly six million stillbirths and neonatal deaths.

Objectives

To estimate the perinatal mortality rate in Sana’a, Yemen and to identify risk factors for perinatal deaths.

Methods

A community-based prospective cohort study was carried out between 2015 and 2016. Nine-hundred and eighty pregnant women were identified and followed up to 7 days following birth. A multi-stage cluster sampling was used to select participants from community households’, residing in the five districts of the Sana’a City, Yemen.

Results

Total of 952 pregnant women were tracked up to 7 days after giving birth. The perinatal mortality rate, the stillbirth rate and the early neonatal mortality rate, were 89.3 per 1000, 46.2 per 1000 and 45.2 per 1000, respectively. In multivariable analysis older age (35+ years) of mothers at birth (Relative Risk = 2.83), teenage mothers’ age at first pregnancy (<18 years) (Relative Risk = 1.57), primipara mothers (Relative Risk = 1.90), multi-nuclear family (Relative Risk = 1.74), mud house (Relative Risk = 2.02), mothers who underwent female genital mutilation (Relative Risk = 2.92) and mothers who chewed khat (Relative Risk = 1.60) were factors associated with increased risk of perinatal death, whereas a positive mother’s tetanus vaccination status (Relative Risk = 0.49) were significant protective factors against perinatal deaths.

Conclusion

Rates of perinatal mortality were higher in Sana’a City compared to perinatal mortality at the national level estimated by World Health Organization. It is imperative there be sustainable interventions in order to improve the country’s maternal and newborn health.  相似文献   
75.
This paper seeks to provide empirical evidence on the efficacy of three important governance mechanisms (auditors, directors, and institutional shareholders) in constraining aggressive financial reporting, proxied by abnormal accruals. It also examines the effects of the Sarbanes–Oxley Act (SOX) on their efficacy. Using a sample of US firms audited by the Big 5 (4) auditors between 2000 and 2004, we document a positive relation between abnormal accruals (our proxy for financial reporting aggressiveness) and auditors’ economic dependence on their clients. Furthermore, we find that this relation is driven by firms with weak non-auditor governance mechanisms before and after the enactment of SOX. The results suggest that aggressive financial reporting occurs only when multiple governance mechanisms ‘fail’. More specifically, such type of reporting requires that a highly dependent auditor operates in a ‘poor’ governance setting. Thus, the paper underscores the importance of strong governance in constraining aggressive financial reporting. Moreover, our results suggest that governance regulation (such as SOX) is not a substitute for strong governance mechanisms and thus caution against the over reliance on SOX-type legislation in other parts of the world.  相似文献   
76.
The present study aimed to examine the level of death anxiety, the sex-related differences among a middle-aged Kuwaiti personnel sample, and to explore the replicability of the Arabic Scale of Death Anxiety (ASDA) factors. A sample of 236 volunteer Kuwaiti personnel took part in the study. The mean ages of men and women were 41.5 (SD = 7.5) and 40.9 (SD = 7.1), respectively. The alpha reliability of the ASDA was found to be high (.93). Women had a significantly higher mean total score on the ASDA as well as on 17 out of its 20 items. Middle-aged personnel had a significantly lower mean ASDA total score than younger college students (M age = 22). The factor analysis of the ASDA items yielded three factors: fear of dead people and tombs; fear of postmortem events; and fear of lethal disease. These factors were highly replicable with previous factors extracted from a Kuwaiti college student sample. On the basis of the present findings, there are three general conclusions as follows: death anxiety is negatively associated with age; the sex-related differences on death anxiety are salient in the Arab samples; and the ASDA has a highly replicable factor structure.  相似文献   
77.
There are numerous situations in categorical data analysis where one wishes to test hypotheses involving a set of linear inequality constraints placed upon the cell probabilities. For example, it may be of interest to test for symmetry in k × k contingency tables against one-sided alternatives. In this case, the null hypothesis imposes a set of linear equalities on the cell probabilities (namely pij = Pji ×i > j), whereas the alternative specifies directional inequalities. Another important application (Robertson, Wright, and Dykstra 1988) is testing for or against stochastic ordering between the marginals of a k × k contingency table when the variables are ordinal and independence holds. Here we extend existing likelihood-ratio results to cover more general situations. To be specific, we consider testing Ht,0 against H1 - H0 and H1 against H2 - H 1 when H0:k × i=1 pixji = 0, j = 1,…, s, H1:k × i=1 pixji × 0, j = 1,…, s, and does not impose any restrictions on p. The xji's are known constants, and s × k - 1. We show that the asymptotic distributions of the likelihood-ratio tests are of chi-bar-square type, and provide expressions for the weighting values.  相似文献   
78.
Asset Management Performance and Reputation Building for Large US Firms   总被引:1,自引:0,他引:1  
Corporate audiences construct the reputation of firms by interpreting informational signals about the firms from various monitors. Of importance to these parties are signals about asset management. The results of our empirical study of 114 large US firms supported the general hypothesis that corporate audiences construct reputations on the basis of information about firms' asset management performance, specifically using market and accounting signals indicating size of the assets, market assessment of the value of the assets in place, asset turnover and profit margin.  相似文献   
79.
The Sudan Community-Based Health Project, initiated by the University of Khartoum in cooperation with the Ministry of Health in 1980, sought to test the proposition that government-trained village midwives could provide maternal-child health and birth spacing services in addition to their ongoing obstetrical duties. The project area encompassed 92,000 people in 93 villages. The 120 midwives serving the project area received training in 4 interventions -- oral rehydration therapy, maternal and child nutrition, immunization, and birth spacing -- and introduced these services by means of 3 rounds of household visits over a 5-month period. Comparison of pre- and post-intervention survey data indicates that village midwives can indeed be used successfully to promote not only contraceptive use, but also health attitudes and practices that are positively associated with fertility regulation. Between the 2 surveys, the percentage of women who ever used contraception increased from 22% to 28%, while the percentage of current users rose from 10% to 13%. Parity was significantly related to current use; each child born multiplied the likelihood of contraceptive acceptance (by a factor of 0.76 in the post-intervention sample). Maternal education was the socioeconomic variable that most enhanced receptivity to contraceptive acceptance after the project's interventions. In terms of community-level variables, village location along the Nile and proximity to a paved road were significant correlates of contraceptive use. When variables related to the project itself were analyzed, women with vaccinated children were found to be twice as likely to contracept as those with nonvaccinated children and women who believed breast feeding should be continued during diarrhea episodes were 1.5 times more likely to use birth spacing than those who did not. Although midwives did not specifically emphasize contraceptive use, it appears women who were encouraged by midwives to take positive steps in the area of child health were also likely to become more innovative in terms of fertility regulation.  相似文献   
80.
Using 322 matched employee–supervisor dyads, we investigate how level and direction of employee–supervisor (dis)agreement on supervisor's affective commitment to the employee relate to organizational commitment, emotional exhaustion, leader–member exchange, and job performance. Results from polynomial regression and response surface analyses indicate that level of employee–supervisor agreement matters: the most beneficial outcomes appear when supervisors and employees agree that the supervisor is highly committed to the employee whereas the least favorable outcomes appear when dyads' members agree that the supervisor has low commitment to the employee. Direction of employee–supervisor disagreement is also important as employee overestimation of supervisor commitment is associated with more favorable outcomes than employee underestimation. However, for two of the outcomes (organizational commitment and emotional exhaustion), the effect of employee–supervisor disagreement was attributable to a main effect of employee perceptions of supervisor commitment. We discuss the implications of these findings for the understanding of employee–supervisor relationships.  相似文献   
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