The equation of state for scalar-tensor gravity

We show that the field equation of Brans-Dicke gravity and scalar-tensor gravity can be derived as the equation of state of Rindler spacetime, where the local thermodynamic equilibrium is maintained. Our derivation implies that the effective energy can not feel the heat flow across the Rindler horizon.Comment: 6 pages, to be published in Prog. Theor. Phy

My right to learn

If books and other media are thought to be connected with terrorism, yet the government does not release a list of such material or inform individuals that they are under suspicion, can students truly feel free to learn, even at a university? Is a free flow of ideas truly possible in a place where only certain ideas are allowed? Is freedom of speech even relevant in a society where expression of certain thoughts or viewpoints is prohibited

“I WANT TO FEEL WHAT THEY FEEL”: EVALUATING THE EFFECTIVENESS OF EMOTIONAL FLOW IN NARRATIVE HEALTH BLOGS

Emotion has long been implemented in persuasive messages and campaigns to influence attitudes and health behavior. Research demonstrates that messages often evoke more than one emotion during and after exposure, and this was previously viewed as an undesirable outcome; however, the literature suggests that the intentional inclusion of multiple emotions, or emotional flow, could positively impact persuasive outcomes, such as attitudes and behavioral intention. The proposed study employs the concept of emotional flow, the intentional inclusion of more than one discrete emotion, in the context of narrative health blogs addressing mental health topics relevant to college students. The study specifically examines how the inclusion of a second discrete emotion influences transportation, identification, and attitudes. Participants were randomly assigned to one of six conditions and read a narrative health blog designed to evoke either one or two discrete emotions. After message exposure, they responded a brief survey to assess discrete emotions, transportation, identification, attitudes, and demographics. Data were analyzed using ANOVAs and ANCOVAs. The findings revealed that although the narratives elicited moderate levels of transportation and identification, there were not significant difference between conditions. Theoretical and practical implications for the study of narratives and emotional flow are discussed, in addition to practical implications for studying mental health

Screening of Hydrodynamic Interactions in Semidilute Polymer Solutions: A Computer Simulation Study

We study single-chain motion in semidilute solutions of polymers of length N = 1000 with excluded-volume and hydrodynamic interactions by a novel algorithm. The crossover length of the transition from Zimm (short lengths and times) to Rouse dynamics (larger scales) is proportional to the static screening length. The crossover time is the corresponding Zimm time. Our data indicate Zimm behavior at large lengths but short times. There is no hydrodynamic screening until the chains feel constraints, after which they resist the flow: "Incomplete screening" occurs in the time domain.Comment: 3 figure

NGAYAH: A BALINESEDANCER'SFLOW

Bali is the most of the art and culture island in the archipelago, where art, culture and religion are living side by side. Balinese dancing is performed in order toa ritual or an art performance for tourism. This paper interviewed two maestro01 the Balinese dancers and showed that when the Balinese dancers perform actually they already do breath work. They feel enjoy, spirit of ngayah (feel sincere in Balinese culture), as a service religion to God. They feel challengetobe the winner in competition of dance and they feel happy when they won, that'sI' Psychology we use term flow. Ngayah, as a sincere working, is a fundamental state of the Balinese dancer's flow involving present moment and unity to t/io universe. As consequence, the dancer will get an inner taksu (charisma)

Hydromagnetic Stability of a Slim Disk in a Stationary Geometry

The magnetorotational instability originates from the elastic coupling of fluid elements in orbit around a gravitational well. Since inertial accelerations play a fundamental dynamical role in the process, one may expect substantial modifications by strong gravity in the case of accretion on to a black hole. In this paper, we develop a fully covariant, Lagrangian displacement vector field formalism with the aim of addressing these issues for a disk embedded in a stationary geometry with negligible radial flow. This construction enables a transparent connection between particle dynamics and the ensuing dispersion relation for MHD wave modes. The MRI--in its incompressible variant-- is found to operate virtually unabated down to the marginally stable orbit; the putative inner boundary of standard accretion disk theory. To get a qualitative feel for the dynamical evolution of the flow below $r_{\rm ms}$, we assume a mildly advective accretion flow such that the angular velocity profile departs slowly from circular geodesic flow. This exercise suggests that the turbulent eddies will occur at spatial scales approaching the radial distance while tracking the surfaces of null angular velocity gradients. The implied field topology, namely large-scale horizontal field domains, should yield strong mass segregation at the displacement nodes of the non-linear modes when radiation stress dominates the local disk structure (an expectation supported by quasi-linear arguments and by the non-linear behavior of the MRI in a non-relativistic setting). Under this circumstance, baryon-poor flux in horizontal field domains will be subject to radial buoyancy and to the Parker instability, thereby promoting the growth of poloidal field.Comment: submitted to M.N.R.A.S. (3/29/02), 14 pages, 2 figures v2 accepted paper: clarified text and added discussion on radial flow effects. Added reference