Lobe dynamics and escape from a potential well are general frameworks introduced to study phase space transport in chaotic dynamical systems. While the former approach studies how regions of phase space are transported by reducing the flow to a two-dimensional map, the latter approach studies the phase space structures that lead to critical events by crossing periodic orbit around saddles. Both...

We establish a relation between two uniform models of random k-graphs (for constant k ≥ 3) on n labeled vertices: H(k)(n,m), the random k-graph with exactly m edges, and H(k)(n, d), the random d-regular k-graph. By extending to k-graphs the switching technique of McKay and Wormald, we show that, for some range of d = d(n) and a constant c > 0, if m ∼ cnd, then one can couple H(k)(n,m) and H(k)(...

the aim of this study was investigation of the factors affecting the primary choice of consumers in food purchasing in mashhad city by applying cross section data of 201 households in 2012. in this study, 56, 30, and 14% of the consumers chose healthiness of food, price of food, and taste of food, respectively, as the primary preference in food purchase. results of applying multinomial logit mo...

background: dysmenorrhea is one of the most common medical problems in gynecology causing several problems in the personal and social life of women. this study was conducted to compare the effect of thymus vulgaris and ibuprofen on the treatment of primary dysmenorrhea methods: this clinical study was conducted on 84 students of babol university of medical sciences with primary dysmenorrhea. th...

background: tuberculosis of the larynx is a rare form of tuberculosis. patients usually present with hoarseness or dysphagia and other nonspecific constitutional symptoms like fever or localized pain. in this study, we present a case of primary vocal cord lesion with tuberculosis. case presentation: a 72 year old man presented with hoarseness of voice, low grade fever, and night sweating with i...

tooth impaction rarely occurs in primary dentition. most of the primary teeth impactions are seen in second molars. the purpose of this article is to present a 4-year-old girl with bilateral impaction of inverted primary maxillary central incisors which trauma had displaced their tooth germ before erupting.

primary immunodeficiency diseases (pids) consist of a group of genetic disorders that predispose the patients to immune-mediated complications. the aim of this study was to assess the knowledge of iranian general practitioners and pediatricians about pids. a questionnaire consisting 52 closed questions on clinical symptoms, laboratory data,associated syndromes and management of pids patients wa...

primary immunodeficiency disorders are a heterogeneous group of genetic disorders, with different modes of inheritance, consisting of more than 100 different types. we constructed the dna banking of primary immunodeficiency disorders for the first time in iran. the dna of 31 immunodeficient patients and their families (total of 92 samples) were collected, as the first step for construction of d...

primary sarcoma of the breast is very rare and constitutes less than 1% of all breast cancers. herein, we report a case of pleomorphic rhabdomyosarcoma (prms) of the right breast in a 49-year-old female patient presented with a mass (7 cm × 6.5 cm). mammography and ultrasonography suspected a malignant lesion and a diagnosis of poorly differentiated carcinoma was made on fine needle aspiration ...