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151.
Renaud P Goyette M Chartier S Zhornitski S Trottier D Rouleau JL Proulx J Fedoroff P Bradford JP Dassylva B Bouchard S 《Nonlinear dynamics, psychology, and life sciences》2010,14(4):463-489
Sexual arousal and gaze behavior dynamics are used to characterize deviant sexual interests in male subjects. Pedophile patients and non-deviant subjects are immersed with virtual characters depicting relevant sexual features. Gaze behavior dynamics as indexed from correlation dimensions (D2) appears to be fractal in nature and significantly different from colored noise (surrogate data tests and recurrence plot analyses were performed). This perceptual-motor fractal dynamics parallels sexual arousal and differs from pedophiles to non-deviant subjects when critical sexual information is processed. Results are interpreted in terms of sexual affordance, perceptual invariance extraction and intentional nonlinear dynamics. 相似文献
152.
Battaglieri M De Vita R Kubarovsky V Guo L Mutchler GS Stoler P Weygand DP Ambrozewicz P Anghinolfi M Asryan G Avakian H Bagdasaryan H Baillie N Ball JP Baltzell NA Batourine V Bedlinskiy I Bellis M Benmouna N Berman BL Biselli AS Bouchigny S Boiarinov S Bradford R Branford D Briscoe WJ Brooks WK Bültmann S Burkert VD Butuceanu C Calarco JR Careccia SL Carman DS Chen S Clinton E Cole PL Coltharp P Crabb D Crannell H Cummings JP Dale D De Sanctis E Degtyarenko PV Deur A Dharmawardane KV 《Physical review letters》2006,96(4):042001
The exclusive reaction gammap-->K0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Theta+ (1540)-->nK+. The decay to nK+requires the assignment of strangeness S=+1 to any observed resonance. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility corresponding to an integrated luminosity of 70 pb-1. No evidence for the Theta+ pentaquark was found. Upper limits were set on the production cross section as function of center-of-mass angle and nK+ mass. The 95% C.L. upper limit on the total cross section for a narrow resonance at 1540 MeV was found to be 0.8 nb. 相似文献
153.
Ungaro M Stoler P Aznauryan I Burkert VD Joo K Smith LC Adams G Amarian M Ambrozewicz P Anghinolfi M Asryan G Audit G Avakian H Bagdasaryan H Ball JP Baltzell NA Barrow S Batourine V Battaglieri M Bedliski I Bektasoglu M Bellis M Benmouna N Berman BL Biselli AS Bonner BE Bouchigny S Boiarinov S Bradford R Branford D Briscoe WJ Brooks WK Bültmann S Butuceanu C Calarco JR Careccia SL Carman DS Cazes A Chen S Cole PL Coltharp P Cords D Corvisiero P Crabb D Cummings JP Sanctis ED Devita R 《Physical review letters》2006,97(11):112003
We report a new measurement of the exclusive electroproduction reaction gamma(*)p-->pi(0)p to explore the evolution from soft nonperturbative physics to hard processes via the Q(2) dependence of the magnetic (M(1+)), electric (E(1+)), and scalar (S(1+)) multipoles in the N-->Delta transition. 9000 differential cross section data points cover W from threshold to 1.4 GeV/c(2), 4pi center-of-mass solid angle, and Q(2) from 3 to 6 GeV(2)/c(2), the highest yet achieved. It is found that the magnetic form factor G(M)(*) decreases with Q(2) more steeply than the proton magnetic form factor, the ratio E(1+)/M(1+) is small and negative, indicating strong helicity nonconservation, and the ratio S(1+)/M(1+) is negative, while its magnitude increases with Q(2). 相似文献
154.
An L(2,1)-labeling of a graph G is a function f from the vertex set of G to the set of nonnegative integers such that |f(x)−f(y)|≥2 if d(x,y)=1, and |f(x)−f(y)|≥1 if d(x,y)=2, where d(x,y) denotes the distance between the pair of vertices x,y. The lambda number of G, denoted λ(G), is the minimum range of labels used over all L(2,1)-labelings of G. An L(2,1)-labeling of G which achieves the range λ(G) is referred to as a λ-labeling. A hole of an L(2,1)-labeling is an unused integer within the range of integers used. The hole index of G, denoted ρ(G), is the minimum number of holes taken over all its λ-labelings. An island of a given λ-labeling of G with ρ(G) holes is a maximal set of consecutive integers used by the labeling. Georges and Mauro [J.P. Georges, D.W. Mauro, On the structure of graphs with non-surjective L(2,1)-labelings, SIAM J. Discrete Math. 19 (2005) 208-223] inquired about the existence of a connected graph G with ρ(G)≥1 possessing two λ-labelings with different ordered sequences of island cardinalities. This paper provides an infinite family of such graphs together with their lambda numbers and hole indices. Key to our discussion is the determination of the path covering number of certain 2-sparse graphs, that is, graphs containing no pair of adjacent vertices of degree greater than 2. 相似文献
155.
Ireland DG McKinnon B Protopopescu D Ambrozewicz P Anghinolfi M Asryan G Avakian H Bagdasaryan H Baillie N Ball JP Baltzell NA Batourine V Battaglieri M Bedlinskiy I Bellis M Benmouna N Berman BL Biselli AS Blaszczyk L Bouchigny S Boiarinov S Bradford R Branford D Briscoe WJ Brooks WK Burkert VD Butuceanu C Calarco JR Careccia SL Carman DS Casey L Chen S Cheng L Cole PL Collins P Coltharp P Crabb D Crede V Dashyan N De Masi R De Vita R De Sanctis E Degtyarenko PV Deur A Dickson R Djalali C 《Physical review letters》2008,100(5):052001
We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a Theta(+) pentaquark, while the other found no such evidence. The unique feature of these two experiments was that they were performed with the same experimental setup. Using a Bayesian analysis, we find that the results of the two experiments are in fact compatible with each other, but that the first measurement did not contain sufficient information to determine unambiguously the existence of a Theta(+). Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner. 相似文献
156.
Octaethylporphyrinrhodium dimer, [RhOEP]2, reacts thermally with arylmethyl CH bonds to produce octaethylporphyrinbenzylrhodium compounds. 相似文献
157.
Dugger M Ritchie BG Ball J Pasyuk E Adams G Anciant E Anghinolfi M Asavapibhop B Audit G Auger T Avakian H Bagdasaryan H Barrow S Battaglieri M Beard K Bektasoglu M Bellis M Berman BL Bianchi N Biselli AS Boiarinov S Bouchigny S Bradford R Branford D Briscoe WJ Brooks WK Burkert VD Calarco JR Capitani GP Carman DS Carnahan B Cetina C Clark R Cole PL Coleman A Connelly J Cords D Corvisiero P Crabb D Crannell H Cummings JP DeSanctis E DeVita R Degtyarenko PV Denizli H Dennis L Dharmawardane KV 《Physical review letters》2002,89(22):222002
Differential cross sections for gammap-->etap have been measured with tagged real photons for incident photon energies from 0.75 to 1.95 GeV. Mesons were identified by missing mass reconstruction using kinematical information for protons scattered in the production process. The data provide the first extensive angular distribution measurements for the process above W=1.75 GeV. Comparison with preliminary results from a constituent quark model support the suggestion that a third S11 resonance with mass approximately 1.8 GeV couples to the etaN channel. 相似文献
158.
159.
160.
Ripani M Burkert VD Mokeev V Battaglieri M De Vita R Golovach E Taiuti M Adams G Anciant E Anghinolfi M Asavapibhop B Audit G Auger T Avakian H Bagdasaryan H Ball JP Barrow S Beard K Bektasoglu M Bellis M Berman BL Bianchi N Biselli AS Boiarinov S Bonner BE Bouchigny S Bradford R Branford D Briscoe WJ Brooks WK Calarco JR Carman DS Carnahan B Cazes A Cetina C Ciciani L Cole PL Coleman A Cords D Corvisiero P Crabb D Crannell H Cummings JP De Sanctis E Degtyarenko PV Denizli H Dennis L 《Physical review letters》2003,91(2):022002