Mechanism of the fluxional behaviour in (1–5-η-cycloheptadienyl)-(1–5-η-cycloheptatrienyl)iron

Evidence for a 1.2-shift mechanism of the 1-5-η-cycloheptatrienyl moiety with respect to the central iron atom of the title compound is presented together with absolute assignments of the ^(13)C n.m.r. chemical shifts of the C_(7)H_(7) ring. A low-temperature rocking motion of both rings can be frozen out at -70 °C

Migration with local public goods and the gains from changing places

Without public goods and under fairly standard assumptions, in Hammond and Sempere (J Pub Econ Theory, 8: 145–170, 2006) we show that freeing migration enhances the potential Pareto gains from free trade. Here, we present a generalization allowing local public goods subject to congestion. Unlike the standard literature on fiscal externalities, our result relies on fixing both local public goods and congestion levels at their status quo values. This allows constrained efficient and potentially Pareto improving population exchanges regulated only through appropriate residence charges, which can be regarded as Pigouvian congestion taxes

Individually-rational collective choice

There is a collection of exogenously given socially-feasible sets, and, for each one of them, each individual in a group chooses from an individually-feasible set. The fact that the product of the individually-feasible sets is larger than the socially-feasible set notwithstanding, there arises no conflict between individual choices. Assuming that individual preferences are random, I characterize rationalizable collective choices

Communication: Vibrational and vibronic coherences in the two dimensional spectroscopy of coupled electron-nuclear motion

We theoretically investigate the photon-echo spectroscopy of coupled electron-nuclear quantum dynamics. Two situations are treated. In the first case, the Born-Oppenheimer (adiabatic) approximation holds. It is then possible to interpret the two-dimensional (2D) spectra in terms of vibrational motion taking place in different electronic states. In particular, pure vibrational coherences which are related to oscillations in the time-dependent third-order polarization can be identified. This concept fails in the second case, where strong non-adiabatic coupling leads to the breakdown of the Born-Oppenheimer-approximation. Then, the 2D-spectra reveal a complicated vibronic structure and vibrational coherences cannot be disentangled from the electronic motion

The Impact of an Aquatic Exercise Protocol on Physiologic Measures Within an Asthmatic Population

Individuals suffering from asthma typically have subnormal exercise tolerance and poor physical fitness. The purpose of this case series study was to examine the impact of a new aquatic exercise protocol on physiological variables in a group of asthmatics. Participants were medically diagnosed and managed asthmatics in a rural community. A total of 8 males and 12 females were accepted into the study with 7 males and 9 females completing the 12-week study. Physiological measures were taken pre- and posttreatment with paired t-tests used for analyses. Increases in VO2max (pre-treatment mean (M) = 31.244 SD = 9.772; post-treatment M = 33.431, SD = 10.387; partial ç²= .257, p \u3c 0.038); lean body muscle mass (pre-treatment M = 119.606, SD = 28.210; post-treatment M = 122.012, SD = 30.475; partial ç²= .237, p \u3c 0.047); and blood glucose (pre-treatment M = 83.937, SD = 7.584; post-treatment M = 89.812, SD = 7.799; partial ç²= .603, p \u3c 0.000), were seen from pre- to posttreatment. The protocol was well tolerated and enjoyed by the participants suggesting it is useful in the asthmatic population. Our results predicted a need for larger sample size in future research ranging from 8 to 218 participants depending upon the dependent measure

From Women-Staffed to Women-Led: Gender and Leadership in Academic Libraries, 1974-2018.

This article reviews post-1974 scholarly literature on women’s leadership in academic libraries, with the emphasis on the United States. The purpose of this synthesis is to highlight research areas and themes that have significantly expanded the profession’s knowledge about gender and its impact at the top administrative level. The article starts with a brief overview of theories of gender and leadership before tracing scholarship on the gendered career patterns singled out in Schiller’s work (1974). The article then focuses on additional issues related to gender and library administration, including leadership styles, perceptions of differences between male and female leaders, and the lack of diversity among academic library women directors