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Solitary confinement : effects, practices, and pathways toward reform
\"The use of solitary confinement in prisons became common with the rise of the modern penitentiary during the first half of the nineteenth century and his since remained a feature of many prison systems all over the world. Solitary confinement is used for a panoply of different reasons although research tells us that these practices have widespread negative health effects. Besides the death penalty, it is arguably the most punitive and dangerous intervention available to state authorities in democratic nations. Nevertheless, in the United States there are currently an estimated 80,000 to 100,000 prisoners in small cells for more than 22 hours per day with little or no social contact and no physical contact visits with family or friends. Even in Scandinavia, thousands of prisoners are placed in solitary confinement every year and with an alarming frequency. These facts have spawned international interest in this topic and a growing international reform movement, which includes researchers, litigators, and human rights defenders as well as prison staff and prisoners. This book is the first to take a broad international comparative approach and to apply an interdisciplinary lens to this subject. In this volume neuroscientists, high-level prison officials, social and political scientists, medical doctors, lawyers, and former prisoners and their families from different countries will address the effects and practices of prolonged solitary confinement and the movement for its reform and abolition\"-- Provided by publisher.
Book
Solitary Confinement
Prolonged solitary confinement has become a widespread and standard practice in U.S. prisons-even though it consistently drives healthy prisoners insane, makes the mentally ill sicker, and, according to the testimony of prisoners, threatens to reduce life to a living death. In this profoundly important and original book, Lisa Guenther examines the death-in-life experience of solitary confinement in America from the early nineteenth century to today's supermax prisons. Documenting how solitary confinement undermines prisoners' sense of identity and their ability to understand the world, Guenther demonstrates the real effects of forcibly isolating a person for weeks, months, or years. Drawing on the testimony of prisoners and the work of philosophers and social activists from Edmund Husserl and Maurice Merleau-Ponty to Frantz Fanon and Angela Davis, the author defines solitary confinement as a kind of social death. It argues that isolation exposes the relational structure of being by showing what happens when that structure is abused-when prisoners are deprived of the concrete relations with others on which our existence as sense-making creatures depends. Solitary confinement is beyond a form of racial or political violence; it is an assault on being. A searing and unforgettable indictment, Solitary Confinement reveals what the devastation wrought by the torture of solitary confinement tells us about what it means to be human-and why humanity is so often destroyed when we separate prisoners from all other people.
eBook
Ionization behavior of nanoporous polyamide membranes
Escalating global water scarcity necessitates high-performance desalination membranes, for which fundamental understanding of structure–property–performance relationships is required. In this study, we comprehensively assess the ionization behavior of nanoporous polyamide selective layers in state-of-the-art nanofiltration (NF) membranes. In these films, residual carboxylic acids and amines influence permeability and selectivity by imparting hydrophilicity and ionizable moieties that can exclude coions. We utilize layered interfacial polymerization to prepare physically and chemically similar selective layers of controlled thickness. We then demonstrate location-dependent ionization of carboxyl groups in NF polyamide films. Specifically, only surface carboxyl groups ionize under neutral pH, whereas interior carboxyl ionization requires pH >9. Conversely, amine ionization behaves invariably across the film. First-principles simulations reveal that the low permittivity of nanoconfined water drives the anomalous carboxyl ionization behavior. Furthermore, we report that interior carboxyl ionization could improve the water–salt permselectivity of NF membranes over fourfold, suggesting that interior charge density could be an important tool to enhance the selectivity of polyamide membranes. Our findings highlight the influence of nanoconfinement on membrane transport properties and provide enhanced fundamental understanding of ionization that could enable novel membrane design.
Journal Article
Solitary confinement : social death and its afterlives
\" Prolonged solitary confinement has become a widespread and standard practice in U.S. prisons--even though it consistently drives healthy prisoners insane, makes the mentally ill sicker, and, according to the testimony of prisoners, threatens to reduce life to a living death. In this profoundly important and original book, Lisa Guenther examines the death-in-life experience of solitary confinement in America from the early nineteenth century to today's supermax prisons. Documenting how solitary confinement undermines prisoners' sense of identity and their ability to understand the world, Guenther demonstrates the real effects of forcibly isolating a person for weeks, months, or years. Drawing on the testimony of prisoners and the work of philosophers and social activists from Edmund Husserl and Maurice Merleau-Ponty to Frantz Fanon and Angela Davis, the author defines solitary confinement as a kind of social death. It argues that isolation exposes the relational structure of being by showing what happens when that structure is abused--when prisoners are deprived of the concrete relations with others on which our existence as sense-making creatures depends. Because of this, solitary confinement is beyond a form of racial or political violence; it is also an assault on being itself. A searing and unforgettable indictment, Solitary Confinement reveals what the devastation wrought by the torture of solitary confinement tells us about what it means to be human--and why humanity is so often destroyed when we separate prisoners from all other people. \"-- Provided by publisher.
Book
The metamorphosis of semi-classical mechanisms of confinement: from monopoles on ℝ3 × S1 to center-vortices on ℝ2 × T2
There are two distinct regimes of Yang-Mills theory where we can demonstrate confinement, the existence of a mass gap, and the multi-branch structure of the effective potential as a function of the theta angle using a reliable semi-classical calculation. The two regimes are deformed Yang-Mills theory on ℝ3 × S1, and Yang-Mills theory on ℝ2 × T2 where the torus is threaded by a ’t Hooft flux. The weak coupling regime is ensured by the small size of the circle or torus. In the first case the confinement mechanism is related to self-dual monopoles, whereas in the second case self-dual center-vortices play a crucial role. These two topological objects are distinct. In particular, they have different mutual statistics with Wilson loops. On the other hand, they carry the same topological charge and action. We consider the theory on ℝ × T2 × S1 and extrapolate both the monopole and vortex regimes to a quantum mechanical domain, where a cross-over takes place. Both sides of the cross-over are described by a deformed ℤN TQFT. On ℝ2 × S1 × S1, we derive an effective field theory (EFT) of vortices from the EFT of monopoles in the presence of a ’t Hooft flux. This construction is based on a two-stage Higgs mechanism, reducing SU(N) to U(1)N−1 in 3d first, followed by reduction to a ℤN EFT in 2d in the second step. This result shows how monopoles transmute into center-vortices, and suggests adiabatic continuity between the two confinement mechanisms. The basic mechanism is flux fractionalization: the magnetic flux of the monopoles splits up and is collimated in such a way that 2d Wilson loops detect it as a center vortex.
Journal Article
Solitary
Imprisoned for a murder he did not commit, fourteen-year-old Alex Sawyer thinks that he has escaped the hellish Furnace Penitentiary, but instead he winds up in solitary confinement, where new horrors await him.
Book
Inorganic Halide Perovskite Quantum Dots: A Versatile Nanomaterial Platform for Electronic Applications
HighlightsResearch progress on inorganic perovskites quantum dots is reviewed from three aspects: physical properties, synthesis approaches, and electronic applications.Inorganic perovskite quantum dots have been exploited as either the active layers or the additives in high-performance transistors and memories.Challenges and outlook on future advancement of perovskites quantum dots-based electronics are elaborated.Metal halide perovskites have generated significant attention in recent years because of their extraordinary physical properties and photovoltaic performance. Among these, inorganic perovskite quantum dots (QDs) stand out for their prominent merits, such as quantum confinement effects, high photoluminescence quantum yield, and defect-tolerant structures. Additionally, ligand engineering and an all-inorganic composition lead to a robust platform for ambient-stable QD devices. This review presents the state-of-the-art research progress on inorganic perovskite QDs, emphasizing their electronic applications. In detail, the physical properties of inorganic perovskite QDs will be introduced first, followed by a discussion of synthesis methods and growth control. Afterwards, the emerging applications of inorganic perovskite QDs in electronics, including transistors and memories, will be presented. Finally, this review will provide an outlook on potential strategies for advancing inorganic perovskite QD technologies.
Journal Article
High Strength Concrete Columns under Axial Compression Load: Hybrid Confinement Efficiency of High Strength Transverse Reinforcement and Steel Fibers
Addition of steel fibers to high strength concrete (HSC) improves its post-peak behavior and energy absorbing capability, which can be described well in term of toughness. This paper attempts to obtain both analytically and experimentally the efficiency of steel fibers in HSC columns with hybrid confinement of transverse reinforcement and steel fibers. Toughness ratio (TR) to quantify the confinement efficiency of HSC columns with hybrid confinement is proposed through a regression analysis by involving sixty-nine TRs of HSC without steel fibers and twenty-seven TRs of HSC with hybrid of transverse reinforcement and steel fibers. The proposed TR equation was further verified by compression tests of seventeen HSC columns conducted in this study, where twelve specimens were reinforced by high strength rebars in longitudinal and transverse directions. The results show that the efficiency of steel fibers in concrete depends on transverse reinforcement spacing, where the steel fibers are more effective if the spacing transverse reinforcement becomes larger in the range of 0.25–1 effective depth of the section column. Furthermore, the axial load–strain curves were developed by employing finite element software (OpenSees) for simulating the response of the structural system. Comparisons between numerical and experimental axial load–strain curves were carried out.
Journal Article