The Influence of Retrieval Organization on the Formation and Persistence of Collective Memory

Cognitive research on human memory has primarily focused on how individuals form and maintain memories across time. However, less is known about how groups of people working together can create and maintain shared memories of the past. Such collective memories common to all people have been theorized to play a role in the emergence and persistence of a strong cultural identity within groups. Empirical research has been focused on understanding the processes behind the formation of such collective memories, but virtually none has investigated the structure of collective memory. This dissertation examined the extent to which the strength of individual and shared memory structure relates to the formation of collective memory and its persistence over time. Results indicate that both collective memory formation and its persistence over time are strongly tied to the amount of shared organization that develops among individuals, particularly among those who have collaborated with each other to reconstruct the past. | 77 page

Nuclear muon capture by 3He: meson exchange currents for the triton channel

Exchange current corrections are calculated using currents found from the hard-pion model and AV14+3BF wavefunctions. Results are given for the rate and spin observables. Their sensitivity to g_P, the nucleon pseudoscalar form factor, is reported.Comment: 35 pages, uuencoded gz-compressed tar file 42 Kbyte

Weak axial nuclear heavy meson exchange currents and interactions of solar neutrinos with deuterons

Starting from the axial heavy meson exchange currents, constructed earlier in conjunction with the Bethe--Salpeter equation, we first present the axial $\rho$--, $\omega$-- and $a_1$ meson exchange Feynman amplitudes that satisfy the partial conservation of the axial current. Employing these amplitudes, we derive the corresponding weak axial heavy meson exchange currents in the leading order in the 1/M expansion ($M$ is the nucleon mass), suitable for the nuclear physics calculations beyond the threshold energies and with wave functions obtained by solving the Schr\"odinger equation with one--boson exchange potentials. The constructed currents obey the nuclear form of the partial conservation of the axial current. We apply the space component of these currents in calculations of the cross sections for the disintegration of deuterons by low energy (anti)neutrinos. The deuteron and the final state nucleon--nucleon wave functions are derived (i) from a variant of the OBEPQB potential, and (ii) from the Nijmegen 93 and Nijmegen I nucleon-nucleon interaction. The extracted values of the constant $L_{1, A}$, entering the axial exchange currents of the pionless effective field theory, are in a reasonable agreement with its value predicted by the dimensional analysis.Comment: 34 pages, 3 figures, 11 table

Induced pseudoscalar coupling of the proton weak interaction

The induced pseudoscalar coupling $g_p$ is the least well known of the weak coupling constants of the proton's charged--current interaction. Its size is dictated by chiral symmetry arguments, and its measurement represents an important test of quantum chromodynamics at low energies. During the past decade a large body of new data relevant to the coupling $g_p$ has been accumulated. This data includes measurements of radiative and non radiative muon capture on targets ranging from hydrogen and few--nucleon systems to complex nuclei. Herein the authors review the theoretical underpinnings of $g_p$, the experimental studies of $g_p$, and the procedures and uncertainties in extracting the coupling from data. Current puzzles are highlighted and future opportunities are discussed.Comment: 58 pages, Latex, Revtex4, prepared for Reviews of Modern Physic

The Influence of Retrieval Organization on the Formation and Persistence of Collective Memory

77 pg.Cognitive research on human memory has primarily focused on how individuals form and maintain memories across time. However, less is known about how groups of people working together can create and maintain shared memories of the past. Such "collective memories" common to all people have been theorized to play a role in the emergence and persistence of a strong cultural identity within groups. Empirical research has been focused on understanding the processes behind the formation of such collective memories, but virtually none has investigated the structure of collective memory. This dissertation examined the extent to which the strength of individual and shared memory structure relates to the formation of collective memory and its persistence over time. Results indicate that both collective memory formation and its persistence over time are strongly tied to the amount of shared organization that develops among individuals, particularly among those who have collaborated with each other to reconstruct the past.Advisor(s): Rajaram, Suparna . Committee Member(s): Luhmann, Christian ; Moyer, Anne ; Lutterbie, John.Stony Brook University Libraries. SBU Graduate School in Department of Experimental Psychology. Charles Taber (Dean of Graduate School)