Curing America\u27s Addiction to Prisons

Our prisons have failed society because they do not, generally, provide an experience that is likely to help offenders overcome the obstacles that led them to make mistakes for which they are now being punished. Instead, they reinforce the violence and exploitation that many offenders were sentenced to prison for in the first place. They have failed because they do not promote restoration, a key to successful reintegration, and nobody benefits when offenders are more dangerous when they are released than when they entered prison. This Essay proposes that a restorative model of justice replace our failed punitive model. By changing their vision and implementing constructive reforms, policymakers can conquer an addiction that is wasting lives and billions of dollars

Dissipation characteristics of quantized spin waves in nano-scaled magnetic ring structures

The spatial profiles and the dissipation characteristics of spin-wave quasi-eigenmodes are investigated in small magnetic Ni$_{81}$Fe$_{19}$ ring structures using Brillouin light scattering microscopy. It is found, that the decay constant of a mode decreases with increasing mode frequency. Indications for a contribution of three-magnon processes to the dissipation of higher-order spin-wave quasi-eigenmodes are found

Direct observation of domain wall structures in curved permalloy wires containing an antinotch

The formation and field response of head-to-head domain walls in curved permalloy wires, fabricated to contain a single antinotch, have been investigated using Lorentz microscopy. High spatial resolution maps of the vector induction distribution in domain walls close to the antinotch have been derived and compared with micromagnetic simulations. In wires of 10 nm thickness the walls are typically of a modified asymmetric transverse wall type. Their response to applied fields tangential to the wire at the antinotch location was studied. The way the wall structure changes depends on whether the field moves the wall away from or further into the notch. Higher fields are needed and much more distorted wall structures are observed in the latter case, indicating that the antinotch acts as an energy barrier for the domain wal

The First Space-Based Gravitational-Wave Detectors

Gravitational waves provide a laboratory for general relativity and a window to energetic astrophysical phenomena invisible with electromagnetic radiation. Several terrestrial detectors are currently under construction, and a space-based interferometer is envisioned for launch early next century to detect test-mass motions induced by waves of relatively short wavelength. Very-long-wavelength gravitational waves can be detected using the plasma in the early Universe as test masses; the motion induced in the plasma by a wave is imprinted onto the cosmic microwave background (CMB). While the signature of gravitational waves on the CMB temperature fluctuations is not unique, the polarization pattern can be used to unambiguously detect gravitational radiation. Thus, forthcoming CMB polarization experiments, such as MAP and Planck, will be the first space-based gravitational-wave detectors.Comment: 5 pages, 3 postscript figure

A laboratory study of tracer tomography

A tracer tomographic laboratory study was performed with consolidated fractured rock in three-dimensional space. The investigated fractured sandstone sample was characterized by significant matrix permeability. The laboratory transport experiments were conducted using gas-flow and gas-tracer transport techniques that enable the generation of various flow-field patterns via adjustable boundary conditions within a short experimental time period. In total, 72 gas-tracer (helium) tests were performed by systematically changing the injection and monitoring configuration after each test. For the inversion of the tracer breakthrough curves an inversion scheme was applied, based on the transformation of the governing transport equation into a form of the eikonal equation. The reliability of the inversion results was assessed with singular value decomposition of the trajectory density matrix. The applied inversion technique allowed for the three-dimensional reconstruction of the interstitial velocity with a high resolution. The three-dimensional interstitial velocity distribution shows clearly that the transport is dominated by the matrix while the fractures show no apparent influence on the transport response

Dyadic interventions for community-dwelling people with dementia and their family caregivers: a systematic review.

Background: In this review, we study the effects of dyadic psychosocial interventions focused on community-dwelling people with dementia and their family caregivers, and the relationship of the effects with intervention components of programs. Methods: A search from January 2005 to January 2012 led to 613 hits, which we reviewed against our inclusion criteria. We added studies from 1992 to 2005 reviewed by Smits et al. (Smits, C. H. M., De Lange, J., Droes, R.-M., Meiland, F., Vernooij-Dassen, M. and Pot, A. M. (2007). Effects of combined intervention programs for people with dementia living at home and their caregivers: a systematic review. International Journal of Geriatric Psychiatry, 22, 1181-1193). We assessed the methodological quality of 41 programs with the Cochrane criteria and two items of the Oxford Centre of Evidence-based Medicine guidelines. Results: Studies of moderate to high quality concerning 20 different dyadic psychosocial programs for people with dementia and caregivers were included. Nineteen of these programs show significant effects on the patient with dementia, the caregiver, or both. Due to differences in the programs and the studies, this study does not provide an unequivocal answer about which programs are most effective. Programs with intervention components that actively train one or more specific functional domains for the person with dementia and/or the caregiver seem to have a beneficial impact on that domain, although there are exceptions. Reasons can be found in the program itself, the implementation of the program, and the study design. Conclusions: Dyadic psychosocial programs are effective, but the outcomes for the person with dementia and the caregiver vary. More attention is needed for matching the targeted functional domains, intervention components, and delivery characteristics of a program with the needs of the person with dementia and the family caregiver. Copyright © International Psychogeriatric Association 2013

Pedagogical Agents for Fostering Question-Asking Skills in Children

Question asking is an important tool for constructing academic knowledge, and a self-reinforcing driver of curiosity. However, research has found that question asking is infrequent in the classroom and children's questions are often superficial, lacking deep reasoning. In this work, we developed a pedagogical agent that encourages children to ask divergent-thinking questions, a more complex form of questions that is associated with curiosity. We conducted a study with 95 fifth grade students, who interacted with an agent that encourages either convergent-thinking or divergent-thinking questions. Results showed that both interventions increased the number of divergent-thinking questions and the fluency of question asking, while they did not significantly alter children's perception of curiosity despite their high intrinsic motivation scores. In addition, children's curiosity trait has a mediating effect on question asking under the divergent-thinking agent, suggesting that question-asking interventions must be personalized to each student based on their tendency to be curious.Comment: Accepted at CHI 202