Dermatology residency selection criteria with an emphasis on program characteristics: a national program director survey.

Background. Dermatology residency programs are relatively diverse in their resident selection process. The authors investigated the importance of 25 dermatology residency selection criteria focusing on differences in program directors' (PDs') perception based on specific program demographics. Methods. This cross-sectional nationwide observational survey utilized a 41-item questionnaire that was developed by literature search, brainstorming sessions, and online expert reviews. The data were analyzed utilizing the reliability test, two-step clustering, and K-means methods as well as other methods. The main purpose of this study was to investigate the differences in PDs' perception regarding the importance of the selection criteria based on program demographics. Results. Ninety-five out of 114 PDs (83.3%) responded to the survey. The top five criteria for dermatology residency selection were interview, letters of recommendation, United States Medical Licensing Examination Step I scores, medical school transcripts, and clinical rotations. The following criteria were preferentially ranked based on different program characteristics: "advanced degrees," "interest in academics," "reputation of undergraduate and medical school," "prior unsuccessful attempts to match," and "number of publications." Conclusions. Our survey provides up-to-date factual data on dermatology PDs' perception in this regard. Dermatology residency programs may find the reported data useful in further optimizing their residency selection process

A Stylometric Analysis of Iranian Poets

This paper presents an investigation into the extent to which the lexical choices made by different poets are distinctive. When a writer, writes, s/he makes lexical choices that make them different from other writers and the writing to some extent can be considered as their fingerprint or in the other word their signature. Authorship analysis by means of textual measurements has been the interest of so many linguists. Authors have their own styles and the stylometrist is interested in finding units which can distinct authors from each other. Statistical analysis has provided different tools for this attempt, by different scholars. Over the past 3 centuries many types of textual tools has been introduced to discriminate different authors objectively that developing in computer programing has played the important role for using these models. In this study by writing a computer program, the styles of different Iranian poets, Attar and Molavi, and Nezami, are investigated in terms of their word length and word richness. Result shows differences between their styles in terms of these parameters. This way of analyzing writing of different authors has some implications in different field of sociolinguistic and TOEFL

Effect of Er: YAG Laser on Microtensile Bond Strength of Bleached Dentin to Composite

Introduction: In non-vital tooth bleaching, dentin is in direct contact with the bleaching agent, 1 to 3-week delay is needed to eliminate free radicals from tooth structure. The present study aimed to evaluate the effect of irradiation of Er: YAG laser on immediate microtensile bond strength of bleached dentin to composite.Methods: Sixty sounds human teeth were collected and randomly divided into 4 groups (n = 15): no bleaching (NB), opalescence endo hydrogen peroxide (HP) gel bleaching, sodium perborate (SP) bleaching and laser bleaching with heydent gel (LB). The groups were divided into 3 subgroups (n = 5): no surface treatment, Er: YAG laser irradiation and 10% sodium ascorbate (SA). All samples were restored and underwent microtensile bond strength testing. Statistical analysis was carried out using one-way and two-way ANOVA.Results: Bond strength in NB-SA group had a significant difference with the NB group (P < 0.05) while no significant difference was noted between NB and NB-Er groups (P = 0.55). Application of SA and Er: YAG laser after bleaching with SP did not enhance the bond strength (P = 0.07).Conclusion: Application of SA and Er: YAG laser after HP gel bleaching significantly enhanced the bond strength. Application of Er: YAG laser after internal bleaching with HP gel could enhance the bond strength

Severity of striae gravidarum and it's related factors in primiparous women

زمینه و هدف: استریای حاملگی یکی از تغییرات شایع بافت همبند در دوران حاملگی است که ممکن است سبب ایجاد نگرانی هایی شود. هدف از این مطالعه تعیین شدت استریای حاملگی و ارتباط احتمالی آن با برخی از ویژگی‌های مادران و نوزادان آن ها بود. روش بررسی: این مطالعه توصیفی- مقطعی بر روی 182 زن نخست زای مراجعه کننده به بیمارستان کوثر شهر قزوین در سال 1390 انجام شد. نمونه‌گیری به روش در دسترس بود. داده‌ها از طریق پرسشنامه و معاینه فیزیکی جمع‌آوری شدند. شدت استریای حاملگی از طریق مقیاس Davey بررسی گردید. داده ها با استفاده از آزمون های آماری تی مستقل، کای دو و ضریب همبستگی پیرسون تجزیه و تحلیل شدند. یافته‌ها: میانگین شدت استریای حاملگی در پستان 55/1± 08/1، شکم 2/2 ± 31/4 و ران 02/2 ± 76/1 بود. بین شدت استریای حاملگی با سن مادر، سن شروع استریا و شاخص توده بدنی همبستگی معکوس و با افزایش وزن دوران حاملگی همبستگی مستقیم وجود داشت. نتیجه‌گیری: اگرچه برخی از عوامل مرتبط با استریا غیر قابل تعدیل هستند (سابقه فامیلی استریا، وزن هنگام تولد نوزاد و سن حاملگی در زمان زایمان)، اما سایر فاکتورهای قابل تعدیل از قبیل شاخص توده بدنی قبل از حاملگی، افزایش وزن دوره حاملگی، افزایش مصرف مایعات از عوامل قابل اصلاح هستن

Dermatology residency selection criteria with an emphasis on program characteristics: a national program director survey.

Background. Dermatology residency programs are relatively diverse in their resident selection process. The authors investigated the importance of 25 dermatology residency selection criteria focusing on differences in program directors' (PDs') perception based on specific program demographics. Methods. This cross-sectional nationwide observational survey utilized a 41-item questionnaire that was developed by literature search, brainstorming sessions, and online expert reviews. The data were analyzed utilizing the reliability test, two-step clustering, and K-means methods as well as other methods. The main purpose of this study was to investigate the differences in PDs' perception regarding the importance of the selection criteria based on program demographics. Results. Ninety-five out of 114 PDs (83.3%) responded to the survey. The top five criteria for dermatology residency selection were interview, letters of recommendation, United States Medical Licensing Examination Step I scores, medical school transcripts, and clinical rotations. The following criteria were preferentially ranked based on different program characteristics: "advanced degrees," "interest in academics," "reputation of undergraduate and medical school," "prior unsuccessful attempts to match," and "number of publications." Conclusions. Our survey provides up-to-date factual data on dermatology PDs' perception in this regard. Dermatology residency programs may find the reported data useful in further optimizing their residency selection process

Vulnerability analysis of transmission towers subjected to unbalanced ice loads

This paper presents a probabilistic framework for vulnerability analysis of electric transmission towers subjected to unbalanced ice loads using the concepts of statistical learning theory (SLT). Based on SLT, the implicit limit state function of each element is replaced by an approximate polynomial function that has good prediction properties. The results are presented in the form of fragility curves for 3 different unbalanced loading scenarios of longitudinal, transverse and torsional loadings. Such fragility information provides us with a better understanding of the behavior of various components of the line under different climatic conditions. It can also be used to evaluate existing transmission towers and to optimize the design of new ones. This paper further studies the effect of various design parameters such as wind speed and direction, icing rate and location of ice formation on the fragility curves of tension and suspension towers. The results show higher failure probabilities for suspension towers than tension towers. The results also indicate that for most conditions, longitudinal loads are more important than other unbalanced loading scenarios. Finally, this study concludes that wind speed, wind direction and ice accumulation rate have notable effects on the fragility curves.Non UBCUnreviewedThis collection contains the proceedings of ICASP12, the 12th International Conference on Applications of Statistics and Probability in Civil Engineering held in Vancouver, Canada on July 12-15, 2015. Abstracts were peer-reviewed and authors of accepted abstracts were invited to submit full papers. Also full papers were peer reviewed. The editor for this collection is Professor Terje Haukaas, Department of Civil Engineering, UBC Vancouver.Facult