context: choosing a career is an important decision for each individual, which is affected by many different factors. the process of entering nursing, as one of the pivotal healthcare discipline, certainly affects quality of care, and retention of nurses in the profession. aims: exploring factors affecting the students’ decision to enter nursing. setting and design: this qualitative content ana...

calcifying epithelial odontogenic tumor (ceot) is an uncommon odontogenic tumor with well-known histopathological features and a challenging treatment plan. although some investigators advocate conservative approach as the treatment of choice, others believe in radical surgical excision to avoid recurrence or malignant transformation. the main objective of this case report is presenting an unus...

percutaneous pulmonary balloon valvuloplasty (pbv) remains the treatment of choice for pulmonary stenosis (ps). this procedure is effective, safe and gives excellent results. pulmonary artery (pa) dissection is a rare complication of pbv. this report is a case of an asymptomatic 17-year-old male with a history of pbv due to severe ps dating back to fifteen years ago. during recent echocardiogra...

While winner-take-all crowdsourcing contests are wide spread in practice, several researchers have observed that their social welfare can be poor due to effort exerted by contestants who are never rewarded. In this paper we study the problem of efficiency in winnertake-all crowdsourcing contests. Using a discrete choice model to capture contestants’ production qualities, we introduce a mechanis...

Understanding how users choose tags can help researchers better understand how tagging systems can be used and how to design better tagging systems for the future. We developed a simulation of del.icio.us, a popular social bookmarking tool, that allowed us to simulate users choosing tags using one of four possible strategies for tag choice found in the literature. We then compared the resulting...

Background and Purpose: Adolescence is considered as one of the most critical life periods since adolescents are being exposed to a variety of potential stimuli, whose inappropriate response to such stimuli would prevent their proper performance in society. The present study aimed to investigate the effectiveness of choice theory-based group training on cognitive emotion regulation and parent-c...

Percutaneous pulmonary balloon valvuloplasty (PBV) remains the treatment of choice for pulmonary stenosis (PS). This procedure is effective, safe and gives excellent results. Pulmonary artery (PA) dissection is a rare complication of PBV. This report is a case of an asymptomatic 17-year-old male with a history of PBV due to severe PS dating back to fifteen years ago. During recent echocardiogra...

to determine whether the medical treatment of anal fissure can be an effective alternative for surgery methods: retrospectively, we randomly selected 190 patients being treated for anal fissure between the years 2005-2010 in 3 equal groups: group a: patients who received medical treatment with topical nitroglycerin, group b: patient treated with topical diltiazem, and group c: patients underwen...

The conceptual design determines the success of the final product quality and competition of market. The determination of design parameters and the effective method to resolve parameters contradiction are the key to success. In this paper, the concept of HOQ products designed to determine the parameters, then using the TRIZ contradiction matrix and inventive principles of design parameters to s...