A Cayley graph Cay(G,S) on a group G is said to be normal if the right regular representation R(G) of G is normal in the full automorphism group of Cay(G,S). In this paper, all connected tetravalent non-normal Cayley graphs of order 4p are constructed explicitly for each prime p. As a result, there are fifteen sporadic and eleven infinite families of tetravalent non-normal Cayley graphs of orde...

A graph is symmetric or arc-transitive if its automorphism group acts transitively on vertices, edges and arcs. Let p, q be odd primes with p, q ≥ 5 and X a q-valent symmetric graph of order 4p. In this paper, we proved that X K4p with 4p-1=q, X K2p,2p-2pK2 with 2p-1=q, the quotient graph of X is isomorphic to Kp,p and p=q, or K2p and 2p-1=q.

We give a characterization of permutation polynomials over a finite field based on their coefficients, similar to Hermite’s Criterion. Then, we use this result to obtain a formula for the total number of monic permutation binomials of degree less than 4p over F4p+1, where p and 4p + 1 are primes, in terms of the numbers of three special types of permutation binomials. We also briefly discuss th...

In this paper we prove that an elementary Abelian p-group of rank 4p− 2 is not a CI(2)-group, i.e. there exists a 2-closed transitive permutation group containing two non-conjugate regular elementary Abelian p-subgroups of rank 4p − 2, see Hirasaka and Muzychuk (J. Comb. Theory Ser. A 94(2), 339–362, 2001). It was shown in Hirasaka and Muzychuk (loc cit) and Muzychuk (Discrete Math. 264(1–3), 1...

The temperature dependence of the chlorine NQR spin-lattice relaxation time T ^ w a s observed for trimethylsulfonium hexachlorometallates(IV), [(CH3)3S]2MC16 (M = Pt, Sn), trimethylammonium hexachlorostannate(IV), [(CH3)3NH]2SnCl6, and tetramethylphosphonium hexachlorostannate(IV), [(CH3)4P]2SnCl6. The quadrupolar relaxation in [(CH3)3NH]2SnCl6 and [(CH3)4P]2SnCl6 can be described by the usual...

هدف: تحلیل گفتمان‌های پیرامون جانشین­‌پروری در یک دستگاه دولتی.طراحی/ روش­‌شناسی/ رویکرد: تحقیق حاضر به لحاظ رویکرد، کیفی؛ روش نمونه­‌گیری، هدفمند و جمع­‌آوری داده­‌ها عمدتا مصاحبه نیمه ساختاریافته با 13 نفر از مدیران مورد مطالعه بوده است. داده‌­ها، گفتمان انتقادی بهره‌­گیری الگوی فرکلاف طی سه مرحله توصیف، تفسیر تبیین انجام یافته است.یافته‌­های پژوهش: مهم­ترین یافته­‌های بخش استخراج 416 کد مثبت...

We report the first observation of a nondipole transition in an ultracold atomic vapor. We excite the 3P-4P electric quadrupole (E2) transition in 23Na confined in a magneto-optical trap, and we demonstrate its application to high-resolution spectroscopy by making the first measurement of the hyperfine structure of the 4P(1/2) level and extracting the magnetic dipole constant A=30.6+/-0.1 MHz. ...

The Noc1-4p proteins were previously reported to be involved in intranuclear and nucleocytoplasmic transport of pre-ribosomes. Using fold recognition and structural modeling, we show that Noc1-4p are largely comprised of alpha-helical repeats similar to HEAT repeats. Because other HEAT-repeat proteins play key roles in transport processes, this finding provides a plausible mechanistic explanati...