Paleomagnetic data on geomagnetic reversals are divided into two general categories: times of occurrence, and records of directional and/or intensity changes for transitions at individual locations. Despite considerable efforts expended in acquiring paleomagnetic reversal records, a detailed picture of the reversal process is still lacking, along with any means of clearly identifying when the m...

Many researchers have long observed some cases in which certain ranking irregularities can occur when the original analytic hierarchy process (AHP), or some of its variants, are used. This paper presents two new categories of ranking irregularities which defy common intuition. These ranking irregularities occur when one decomposes a decision problem into a set of smaller problems each defined o...

Social and linguistic explanations have been proposed for pronoun reversals in young typically developing (TD) children and those with autism spectrum disorders (ASD). The current study breaks new ground in investigating both explanations, comparing 18 TD toddlers and 15 children with ASD at similar language levels. Spontaneous speech was sampled every four months for six visits. Vocabulary and...

286 men presenting for vasectomy were interviewed preoperatively as a psychological screening; their wives were interviewed separately. Age range was from 23-49 years. Number of children tended to be small (mean, 2.7 children/couple). The length of time the couple was married varied widely (5-25 years). In this screening interview special reference was made to emotional and sexual difficul...

PURPOSE To evaluate the efficacy and postoperative morbidity of percutaneous no-scalpel vasectomy (NSV) via one puncture in China. MATERIALS AND METHODS A total of 150 men visiting outpatient clinic of the surgery department of urology, Huashan Hospital and its Baoshan branch of Fudan University, opted for percutaneous NSV with local anesthesia. The clinical data of 150 who underwent modified...

This article reviews the outcomes for vasovasostomy (VV) when only sperm parts were present in the vasal fluid. Thirtyfour patients who underwent bilateral (31) or unilateral (3) VV had either sperm parts bilaterally or sperm parts on 1 side and intravasal azoospermia on the contralateral side. Two of the procedures (1 unilateral, 1 bilateral) were repeat procedures. Patient and partner age wer...

Post-vasectomy pain syndrome (PVPS) is a rare, but devastating outcome following vasectomy. Given the widespread utilization of vasectomy for permanent contraception, with more than 500,000 procedures performed annually in the United States, it can be a significant challenge for both patients and providers. Vasectomy reversal is a surgical option for men who fail conservative or medical managem...

sperm heads and short tails), a TESE could be performed for the express purposes of cryopreservation. Indeed, in selected patients, discussion of concurrent VR coupled with sperm harvest for IVF could be the preferred option, especially given that costs for sperm harvesting as an isolated procedure can sometimes approach those for a VR.5 Partner’s age is another critical discussion point in pre...

INTRODUCTION Post-vasectomy pain syndrome (PVPS), defined as chronic epididymal pain that is continuous or recurrent in the absence of proven epididymal or testicular infection, has become more common as the number of vasectomies performed rises. With more than four million vasectomies performed annually, the prevention and treatment of this condition becomes more important. Multiple theories...