Informal Communication in Virtual Learning Environments

Abstract

Learning environments increasingly become more diverse by the use of information technology. Thereby, the share of face-to-face situations between students as well as between students and mentors becomes smaller, while the share of encounters in virtual space is growing larger. Thus, computer mediated communication (CMC) is growing in importance in all learning environments. Since standard learning environments involve both formal and informal communication, it seems reasonable to claim that without informal communication students and faculty would have difficulties in sustaining the learning processes. Beyond the ever-growing exchange of formal content, the opportunity of informal communication appears increasingly essential for the successful pursuit of online studies.

Accurate second dielectric virial coefficient of helium, neon, and argon from ab initio potentials and polarizabilities

“…For the QM data by Hättig et al, some discrepancies can be observed in the lowtemperature region since quantum effects become stronger with decreasing temperatures. In the paper of Gaiser and Fellmuth [39], they also reported one b value at 273.16 K computed by Bich [42], where b = B ε /A ε . Using the information provided by Gaiser and Fellmuth, we have determined the B ε data of Bich and its uncertainty (See the supplementary materials for more detials).…”

“…To facilitate the applications in temperature and pressure metrology, the second dielectric virial coefficient of helium4 between 5 and 25 K will be computed in this work by the method of analog. Moszynski and coworkers have calculated 1999 4 He, Ar SC 3.8-408 K Rizzo [41] 2002 4 He, Ar QM 3.8-408 K Hättig [19] 2003 Ne SC, QM 40-410 K Bich [42] 2009 Ne U 273 K Vogel [20] 2010 Ar SC 84-10 000 K Cencek [18] 2011 4 He C 77-322 K a C, classical; QM, quantummechanical; SC, semiclassical; U, unknown.…”

“…The error bar corresponds to the claimed uncertainty of B ε,theo [18,24] and the shaded area denotes the uncertainty of B ε,cal . [19]; (red open circle) Hättig et al (QM) [19]; (blue filled triangle) Bich [42]. The error bar corresponds to the claimed uncertainty of B ε,theo [42] and the shaded area denotes the uncertainty of B ε,cal .…”

“…Absolute deviations of the theoretical second dielectric virial coefficient data, B ε,theo , from the values calculated in this work, B ε,cal , for neon as a function of temperature. Data sources: (black open square) Hättig et al (SC)[19]; (red open circle) Hättig et al (QM)[19]; (blue filled triangle) Bich[42]. The error bar corresponds to the claimed uncertainty of B ε,theo[42] and the shaded area denotes the uncertainty of B ε,cal .…”

“…Data sources: (black open square) Hättig et al (SC)[19]; (red open circle) Hättig et al (QM)[19]; (blue filled triangle) Bich[42]. The error bar corresponds to the claimed uncertainty of B ε,theo[42] and the shaded area denotes the uncertainty of B ε,cal .…”