Guttmacher Institute/IUSSP their responses. The researchers found that many respondents had interpreted questions differently from the intended meaning and that nonsampling error was much greater than standard sampling error. They concluded that using qualitative research techniques to supplement and complement quantitative techniques can improve data validity and reduce nonsampling error. In s...

background: the use of psychology in the workplace and accurate scientific findings in this field, in addition to reducing work-related diseases, can promote the performance of employees. nursing is a stressful job and can be the cause of physical and mental disorders. this study investigates the relationship of personality traits and demographic factors with occupational stress. materials and ...

Powerful computational tools are becoming available to represent the behavior of complex systems. Agent-based modeling, in particular, facilitates an examination of the system-level outcomes of the heterogeneous actions of a set of heterogeneous agents: for example, patterns of land-use and land-cover change, such as urban sprawl as a result of residential location decisions. These new tools cr...

objective : identification of the risk factors and psychological correlates of prolonged grief disorder is vital for health promotions in relatives of persons who died of cancer. the aim of this research was to investigate the role of defense mechanisms, character dimension of personality and demographic factors on complicated grief following a loss of a family member to cancer. method : a numb...

introduction: the goal of professional librarians and informatics is providing useful services for users. this study aims to recognize the rate of commitment and authority of librarians to ethics instruction. method: this study is an applied ex post facto research. the population of study includes all librarians of isfahan public libraries in 2012. by in access selection, 207 questionnaires wer...

the effectiveness of contraceptive methods, such as i.u.d. can be considered with different points of view, such as: the period of protection from pregnancy for such married couple. the demographic effect of the program, on the basis of the number of births, averted in a given population. the objective of the, present study was to calculate the probability of pregnancy, expulsion, removal and t...

This paper describes an agent-based simulation model of the spread of HIV/AIDS in the Sub-Saharan region. The model is part of our studying social complexity in the Sekhukhune district of the Limpopo province in South Africa. The model presents a coherent framework and identifies the essential factors agent-based modellers need to take into account when modelling HIV spread. The necessary empir...

this is a discriptive study with the main goal to identify personal, pregnancy and delivery characteristics of mothers given birth to mentally retarded child. this study has been conducted in the rehabilitation center in tehran in 1994. a total of 150 women took part in this research, and the tool of was a check list which was completed by researcher through interview. the findings were illustr...