cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A ‘Neighbourhood Renaissance’: Community Development in St. Louis in the 1970s
Creators: name: Cowan, Susanne
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: In 1977, the city of St. Louis was experiencing a ‘Neighbourhood Renaissance’ with greater attention to the neighbourhood, rather than the city or metro area, as the unit of planning and community development projects. Some St. Louis commentators saw this as a local phenomena, inspired by the city’s historically distinct neighbourhoods with strong place-based community groups and neighbourhood improvement associations. Local politicians, like Mayor Jim Conway, also gave particular attention to neighbourhood development as a means to reverse St. Louis’s shrinking population and economy. However this planning approach also reflected in national political shifts. The growing predominance of bottom up, small-scaled planning projects under the Model Cities programs reflected a reaction against the modernist top-down, large-scale redevelopment projects of the 1950s and 1960s. Policies such as the Community Development Act of 1974 provided new opportunities for distributing federal funds for innovative urban revitalization programs including infrastructural improvements for historic preservation districts, and small-scale infill and redevelopment projects in blighted areas. While the 1970s increased attention to the neighbourhood, it was not the first or last time this scale would be the focus of planning programs. Both in the St. Louis and nationally, neighbourhoods also garnered attention during the Progressive era, and to some extent in the early modernist plans. In St. Louis, interested in neighbourhood planning can be seen both in the proposals for Community Centres in the 1907 plan and the Neighbourhood Units in the 1947 Plan by Harlard Barthothomew. The distinct conceptions of neighbourhood from three eras of planning from the 1900s, 1940s, and 1970s can be seen when examining the planning proposals for two low-income neighbourhoods in St. Louis, Carr Square and Soulard. By tracing the approach to neighbourhood planning across these three time periods, this paper will start to define the changing meaning of the neighbourhood as a planning unit in national policies. It will also question how these theoretical trends in planning shaped neighbourhood-based planning projects in the specific context of deindustrializing St. Louis.
description: International Planning History Society Proceedings, Vol. 17 No. 2 (2016): HISTORY URBANISM RESILIENCE: The Urban Fabric
STRESS MANAGEMENT: YOGA, MINDFULNESS AND MEDITATION IN THE WORKPLACE
Creators: name: Oshchepkova, Irina
Publisher: name: Zenodo
Year: 2023
Subjects: Stress; Anxiety; Depression; Stress Management; Yoga; Mindfulness; Meditation in the Workplace

description: Abstract:
 Over the last few years, the challenges of global pandemic, political instability, and the cost-of-living crisis have impacted the work culture. Fancy coffee machine and free cookies in the office is no longer an indicator of a caring employer. 41% of people are considering leaving their employer, and it takes 20%-200% of an employee’s annual salary to hire a replacement. How to create and maintain a supportive and fulfilling work environment? How to ensure that the workplace makes people feel needed and connected, all rowing in the same direction? How to encourage people to contribute more actively to the company’s goals and performance? A holistic well-being program including yoga, mindfulness and meditation and adapted to the corporate environment can ensure retention, increase job satisfaction, boost productivity and company performance. 67% of companies with wellness programs in place have more satisfied employees. This presentation focuses on yoga, mindfulness and meditation practices easily implementable in the corporate environment and provides examples of certain tools and techniques. It will benefit both the team members and the team leads.
 Biography:
 Irina Oshchepkova is a Well-Being Guide specialised in Employee Wellness and Stress Management, and a certified yoga teacher with 1000+ hours of teaching experience. She has corporate background and significant managerial experience in an international environment of 10+ years. She received her certification in India and Europe in different styles of yoga, functional anatomy, therapeutics yoga and other practices. Irina has a qualification in Employee Wellness and Stress Management from the Stanford Centre for Health Education. Irina helps companies to increase employee satisfaction so that they are more motivated, focused, and productive at work. Her signature programs include practical techniques for stress management based on movement, meditation, and mindfulness adapted to the corporate environment. She works with teams, team leaders and team members.
description: Accepted to be presented at the INTERNATIONAL LIVE CONFERENCE ON STRESS, ANXIETY, AND DEPRESSION organised by OLCIAS Live Conferences
Floquet Theory for Second Order Linear Homogeneous Difference Equations
Creators: name: Encinas, Andrés M.
name: Jiménez, M. José
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper we provide a version of the Floquet's theorem to be applied to any second order difference equations with quasi-periodic coefficients. To do this we extend to second order linear difference equations with quasi-periodic coefficients, the known equivalence between the Chebyshev equations and the second order linear difference equations with constant coefficients. So, any second order linear difference equations with quasi-periodic coefficients is essentially equivalent to a Chebyshev equation, whose parameter only depends on the values of the quasi-periodic coefficients and can be determined by a non-linear recurrence. Moreover, we solve this recurrence and obtaining a closed expression for this parameter. As a by-product we also obtain a Floquet's type result; that is, the necessary and sufficient condition for the equation has quasi-periodic solutions.
"Hello, Clarice." (A Step) Towards a Philosophical Account of Intimacy
Creators: name: Nitchovski, Pavel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Despite the importance that many people today place on intimacy, there has been surprisingly little philosophical work done on the topic. This essay attempts to partially fill this lacuna by offering an account of some characteristic features of intimate interactions and providing the beginning steps towards a more nuanced view of intimacy. In short, the claim I will defend is that intimate interactions between people generally involve an instance of disclosure about something personal (by at least one person involved in the interaction) that is picked up by an empathetic individual, resulting in a specific kind of understanding of what’s being shared, and that is marked with a shared recognition that this kind of understanding has occurred. I’ll develop this point by looking at a few of the existing accounts of intimacy and a specific example from film.
Modeling of screening currents in coated conductor magnets containing up to 40000 turns
Creators: name: Pardo, Enric
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Screening currents caused by varying magnetic fields degrade the homogeneity and stability of the magnetic fields created by $RE$BCO coated conductor coils. They are responsible for the AC loss, which is also important for other power applications containing windings. Since real magnets contain coils exceeding 10000 turns, accurate modeling tools for this number of turns are necessary for magnet design. This article presents a fast numerical method to model coils with no loss of accuracy. We model a 10400-turn coil for its real geometry and coils of up to 40000 turns with the continuous approximation, which we checked that introduces negligible errors. The screening currents, the Screening Current Induced Field (SCIF) and the AC loss is analyzed in detail. The SCIF is maximum at the remnant state with a considerably large value and decreases substantially after one day of relaxation. The instantaneous AC loss for an anisotropic magnetic-field dependent $J_c$ is qualitatively different than for a constant $J_c$, although the loss per cycle is similar. Saturation of the magnetization currents at the end pancakes causes that the maximum AC loss at the first ramp increases with $J_c$. The presented modeling tool can accurately calculate the SCIF and AC loss in practical computing times for coils with any number of turns used in real windings, enabling parameter optimization.
description: 24 pages, 17 figures
Evolution of Cooper pairs with zero-center-of-mass momentum and their first-order correlation function in a two-dimensional ultracold Fermi gas near the observed Berezinskii-Kosterlitz-Thouless transition
Creators: name: Matsumoto, Morio
name: Inotani, Daisuke
name: Ohashi, Yoji
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the center-of-mass momentum distribution $n_{\boldsymbol Q}$ of Cooper pairs and their first-order correlation function $g_1(r)$ in a strongly interacting two-dimensional Fermi gas. Recently, the BKT (Berezinskii-Kosterlitz-Thouless) transition was reported in a two-dimensional $^6$Li Fermi gas, based on (1) the observations of anomalous enhancement of $n_{{\boldsymbol Q}={\boldsymbol 0}}$ [M. G. Ries, et. al., Phys. Rev. Lett. 114, 230401 (2015)], as well as (2) a power-law behavior of $g_1(r)$ [P. A. Murthy, et. al., Phys. Rev. Lett. 115, 010401 (2015)]. However, including pairing fluctuations within a $T$-matrix approximation (TMA), we show that these results can still be explained as strong-coupling properties of a normal-state two-dimensional Fermi gas. Our results indicate the importance of further experimental observations, to definitely confirm the realization of the BKT transition in this system. Since the BKT transition has been realized in a two-dimensional ultracold Bose gas, our results would be useful for the achievement of this quasi-long range order in an ultracold Fermi gas.
description: 22 pages, 7 figures
A Relativistic One-Particle Time of Arrival Operator for a Free Spin-1/2 Particle in (1 + 1) Dimensions
Creators: name: Bunao, Joseph
name: Galapon, Eric
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: As a follow-up to a recent study in the spin-0 case [J. Bunao and E. A. Galapon, Ann. Phys. 353, 83-106 (2015)], we construct a one-particle Time of Arrival (TOA) operator conjugate to a Hamiltonian describing a free relativistic spin-1/2 particle in one spatial dimension. Upon transformation in a representation where the Hamiltonian is diagonal, it turns out that the constructed operator consists of an operator term $\mathcal{\hat{T}}$ whose action is the same as in the spin-0 case, and another operator term $\mathcal{\hat{T}}_0$ which commutes with the Hamiltonian but breaks invariance under parity inversion. If we must impose this symmetry on our TOA operator, then we can throw away $\mathcal{\hat{T}}_0$ so that the TOA operator is just $\mathcal{\hat{T}}$.
description: Preprint. Please refer to the Annals of Physics for published version
Beyond Soviet Model: Institutional Change and Planning Evolution in Maoist Era’s China
Creators: name: Xu, Hao
name: Li, Baihao
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: Pre-reform Chinese urban planning is often described as “Soviet Planning Mode”, thus overlook the impact of Mao. The planning history in Chinese context shall perceive it in the vein of its historical development, this article explores planning practice in Maoist Era’s China exclude “Soviet Planning Mode”. In order to trace the Planning Evolution due to institutional Changes, research selects three typical planning events which are Capital Beijing Planning at the initial stage of new China, People’s Commune Planning in the late 1950s, Daqing Planning Pattern in 1960s. The study reveals that urban planning from 1950s-1960s experienced the ideological thought of prudency, learning, idealism and decentralism, its evolving process link to Mao’s political and economic policies closely. Besides, in later life of Mao’s China, urban planning Thoughts shows a Hybridism state with both Soviet mode and local gene.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Forgive us our debts: reporting on a faith-based campaign against high interest rates
Creators: name: DeConto, Jesse James
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Postmodern people may think of money as a secular matter and religion as a personal one, without much connection between the two. But the Bible has more to say about economic relationships than about any other earthly topic. This study examines a biblically based grassroots campaign to help people out of debt, both by confronting banks and political leaders about high interest rates and by teaching families how to manage their household finances. This series of three articles will report on the theological roots of a protest rally outside big Charlotte banks, a church-sponsored budgeting class and the lives of the two pastors leading these efforts.
(UN)HEALING THE URBAN SCAR IN NICOSIA: SPATIAL AND SOCIAL TRANSFORMATION IN POST CONFLICT DIVIDED CITIES
Creators: name: Gurdalli, Huriye
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: Urban seperation of cities mostly resulted by the political and ethnic conflict is not considered a lasting solution. When a political solution couldn’t be achieved, where it is mostly seen as a necessity for cooperative urban and social infrastructure, the temporary solution for the city’s divided landscape and everyday life becomes permanent. Hence divided cities are arenas where issues around urban resilience and (re)production of space under contested states are more than everyday debate. Nicosia widely known as the last divided capital city in Europe serves as the capital of Turkish Cypriots in the north and Greek Cypriots in the south. The United Nations (UN) Buffer Zone formalized in 1974 as an emergency measure against inter-communal clashes has bisected the Walled City Nicosia seperating its citizens and breaking the urban unity. The union of the two communities on Cyprus had been broken up and the continuity of space had then become a past. Nicosia Master Plan (NMP) the cooperative planning initiative of the professionals that had been managed before political consensus is reached, had created a unique solution for the city. The success of NMP in physical terms stayed limited as the division continued. In 2008 with the opening of the Ledra Gate within the Walled City had symbolic meaning as it will make the two communities feel as if they belong to the united urban texture and have the potential of giving chance to new socio-economic developments and for daily interactions. Civil actors from formal and informal groups have gradually stepped forward to strenghten the positive effect of the NMP; bringing life to the Dead Zone of the city. The recent spatial and social transformations along the divide of Nicosia are scrutinized in this paper. It explores the policy and planning responses that are being proposed in divided cities and the solution efforts that is promoted by professionals, citizens and NGO’s more than the states. The analysis is based on qualitative data; the visual and verbal records centered on activities and actions of NMP and NGO’s on the field. Within this context the paper focuses on intentions and concrete steps where the Buffer Zone is perceived as a shared space. It also aims to point out an insight for social and spatial (re)production in post conflict divided cities.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Muonic hydrogen as a quantum gravimeter
Creators: name: Onofrio, Roberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: High precision spectroscopy of muonic hydrogen has recently led to an anomaly in the Lamb shift, which has been parametrized in terms of a proton charge radius differing by seven standard deviations from the CODATA value. We show how this anomaly may be explained, within about a factor of three, in the framework of an effective Yukawian gravitational potential related to charged weak interactions, without additional free parameters with respect to the ones of the standard model. The residual discrepancy from the experimental result in this model should be attributable to the approximations introduced in the calculation, the uncertainty in the exact value of the Fermi scale relevant to the model and the lack of detailed knowledge on the gravitational radius of the proton. The latter cannot be inferred with electromagnetic probes due to the unknown gluonic contribution to the proton mass distribution. In this context, we argue that muonic hydrogen acts like a microscopic gravimeter suitable for testing a possible scenario for the reciprocal morphing between macroscopic gravitation and weak interactions, with the latter seen as the quantum, microscopic counterpart of the former.
description: 12 pages, 6 figures, regular article version of preprint arXiv:1312.3469 appeared as EPL 104, 20002 (2013), prediction for muonic deuterium Lamb shift anomaly: 42.6 microeV
Functional complexity emerging from anatomical constraints in the brain: the significance of network modularity and rich-clubs
Creators: name: Zamora-López, Gorka
name: Chen, Yuhan
name: Deco, Gustavo
name: Kringelbach, Morten L.
name: Zhou, Changsong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The large-scale structural ingredients of the brain and neural connectomes have been identified in recent years. These are, similar to the features found in many other real networks: the arrangement of brain regions into modules and the presence of highly connected regions (hubs) forming rich-clubs. Here, we examine how modules and hubs shape the collective dynamics on networks and we find that both ingredients lead to the emergence of complex dynamics. Comparing the connectomes of C. elegans, cats, macaques and humans to surrogate networks in which either modules or hubs are destroyed, we find that functional complexity always decreases in the perturbed networks. A comparison between simulated and empirically obtained resting-state functional connectivity indicates that the human brain, at rest, lies in a dynamical state that reflects the largest complexity its anatomical connectome can host. Last, we generalise the topology of neural connectomes into a new hierarchical network model that successfully combines modular organisation with rich-club forming hubs. This is achieved by centralising the cross-modular connections through a preferential attachment rule. Our network model hosts more complex dynamics than other hierarchical models widely used as benchmarks.
The Diplomatic Quarters in Riyadh. A Western-shaped neighborhood in an Islamic city.
Creators: name: Cardenas, Margarita Gonzalez
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: Riyadh, the capital of the Kingdom of Saudi Arabia, is a complex relatively young city. One of its major districts was built ex-novo only 30 years ago as part of a governmental input to define Riyadh as capital of the Kingdom. Albert Speer III and Partners thus designed the Diplomatic Quarters (DQ) as an enclave built in a major spot on the Valley Hanifa, nearby the first Riyadh settlement called Al Dirriyah. The urban landscape has been recognized for being well integrated with both the valley and the deserted landscape. In addition, the DQ’s major core could be considered a prototype of the New Urbanism Theory. The DQ was designed to be accessible to all citizens, but early 2000 terrorist attacks forced the DQ management to close its fences and made this place only accessible for tenants and temporary visitors. However, it has become a major district for scholars to define Riyadhs’ identity. Through a design process analysis, and primary observation methodologies, this paper aims to answer the following questions: why is the DQ becoming an identity spot for scholars and citizens? How is this space been interpreted by scholars to make it part of Riyadh’s identity discourse? How has this space been preserved and used by its inhabitants, both locals and foreigners? The paper analyses the DQ’s urban planning by highlighting the elements that leads to the interpretation of identity, such as landscape integration, district configuration or the Major Core’s urban spaces and typologies. The paper will question the validity of the identity discourse, and will show the DQ challenges facing Riyadh’s conservative society. Finally, this paper expects to raise awareness on the need to rethink from a historical perspective a main district in one of the fastest growing cities in the world.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Through precision straits to next standard model heights
Creators: name: David, André
name: Passarino, Giampiero
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: 81T99

description: After the LHC Run 1, the standard model (SM) of particle physics has been completed. Yet, despite its successes, the SM has shortcomings vis-à-vis cosmological and other observations. At the same time, while the LHC restarts for Run 2 at 13 TeV, there is presently a lack of direct evidence for new physics phenomena at the accelerator energy frontier. From this state of affairs arises the need for a consistent theoretical framework in which deviations from the SM predictions can be calculated and compared to precision measurements. Such a framework should be able to comprehensively make use of all measurements in all sectors of particle physics, including LHC Higgs measurements, past electroweak precision data, electric dipole moment, $g-2$, penguins and flavor physics, neutrino scattering, deep inelastic scattering, low-energy $e^{+}e^{-}$ scattering, mass measurements, and any search for physics beyond the SM. By simultaneously describing all existing measurements, this framework then becomes an intermediate step, pointing us toward the next SM, and hopefully revealing the underlying symmetries. We review the role that the standard model effective field theory (SMEFT) could play in this context, as a consistent, complete, and calculable generalization of the SM in the absence of light new physics. We discuss the relationship of the SMEFT with the existing kappa-framework for Higgs boson couplings characterization and the use of pseudo-observables, that insulate experimental results from refinements due to ever-improving calculations. The LHC context, as well as that of previous and future accelerators and experiments, is also addressed.
description: 19 pages, 3 figures
Language attitudes of Québécois students towards le français québécois standard and le franco-québécois
Creators: name: Kraus, Amie
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: The many language attitude studies which have been conducted in the province of Québec over the past fifty years have revealed that the linguistic attitudes and beliefs of the Québécois towards both English and specific varieties of French have changed considerably. The purpose of the present study was to determine the current language attitudes of Québécois students towards standard Québec French and towards a colloquial variety of Québec French, le franco-québécois. In spite of the significant shift in language attitudes in Québec’s recent history, the results of this study were comparable to those of a similar study conducted three decades ago by Méar-Crine and Leclerc. In both studies, the majority of Québécois participants indicated a preference for the standard variety of Québec French.
Preconditioned ADMM with nonlinear operator constraint
Creators: name: Benning, Martin
name: Knoll, Florian
name: Schönlieb, Carola-Bibiane
name: Valkonen, Tuomo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We are presenting a modification of the well-known Alternating Direction Method of Multipliers (ADMM) algorithm with additional preconditioning that aims at solving convex optimisation problems with nonlinear operator constraints. Connections to the recently developed Nonlinear Primal-Dual Hybrid Gradient Method (NL-PDHGM) are presented, and the algorithm is demonstrated to handle the nonlinear inverse problem of parallel Magnetic Resonance Imaging (MRI).
Multiple phases and vicious walkers in a wedge
Creators: name: Delfino, Gesualdo
name: Squarcini, Alessio
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider a statistical system in a planar wedge, for values of the bulk parameters corresponding to a first order phase transition and with boundary conditions inducing phase separation. Our previous exact field theoretical solution for the case of a single interface is extended to a class of systems, including the Blume-Capel model as the simplest representative, allowing for the appearance of an intermediate layer of a third phase. We show that the interfaces separating the different phases behave as trajectories of {\it vicious} walkers, and determine their passage probabilities. We also show how the theory leads to a remarkable form of wedge covariance, i.e. a relation between properties in the wedge and in the half plane, which involves the appearance of self-Fourier functions.
description: 15 pages, 7 figures
Representations of zombis in Emile Ollivier's La discorde aux cent voix and Dany Laferrière's Pays sans chapeau
Creators: name: Matthews, Helen Camp
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Two Haitian authors living and writing in Montral, Emile Ollivier and Dany Laferrière, use the figure of the zombi to represent a long-standing dialogue of interiority and exteriority between the United States and Haiti. Ollivier's 1986 novel, La discorde aux cent voix, and Laferrière's 1997 novel, Pays sans chapeau, are both narratives that reflect the penetration of exteriority into Haitian identity, employing the zombi as an integral part of this reflection. References to the zombi, a definably Haitian entity that has captured the fascination of American popular culture, serve as expressions of the voices of exteriority that pervade Haitian literary expression. In this thesis, I propose an analysis of the ways in which intertextual and transtextual readings of these references deepen an understanding of the multifaceted perceptions of an internationally reflected self that permeates Haitian literature.
The Lost Identity of Izmir
Creators: name: Tanis, Fatma
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: Port cities are distinguished from other cities by their waterfronts, which were shaped by economic and cultural transactions between each city and its networks. Trade-related activities prepared the conditions for accelerated globalisation with economic changes. The Ottoman Empire supported commerce and production in Western Anatolia after 16th century. Many European merchants thus moved to Izmir in accord with an agreement made by the Ottoman Empire in order to maintain commercial events. Afterwards, the city developed as a culturally diverse entity due to its port activity. The waterfront and arguably the whole structure of the city have been influenced by cross cultural exchanges. Study explains how shifting networks have created a unique palimpsest of structures and actor networks between 16th and 21st century in Izmir, a port city on western coast in Turkey. This paper explores the transformation of Izmir’s urban form and identity. Different architectural practices such as Dutch, British, French, Italian, Greek were concretised on Izmir’s waterfront and have become a part of the city’s identity. Nevertheless, political decisions, governmental policies, fires, earthquakes, planned and unplanned events changed the waterfront and caused gaps in history told by its built environment. This study analyses the vicissitudes in the planning history of Izmir’s waterfront.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Dissipative Effects in Nonlinear Klein-Gordon Dynamics
Creators: name: Plastino, A. R.
name: Tsallis, C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider dissipation in a recently proposed nonlinear Klein-Gordon dynamics that admits soliton-like solutions of the power-law form $e_q^{i(kx-wt)}$, involving the $q$-exponential function naturally arising within the nonextensive thermostatistics [$e_q^z \equiv [1+(1-q)z]^{1/(1-q)}$, with $e_1^z=e^z$]. These basic solutions behave like free particles, complying, for all values of $q$, with the de Broglie-Einstein relations $p=\hbar k$, $E=\hbar ω$ and satisfying a dispersion law corresponding to the relativistic energy-momentum relation $E^2 = c^2p^2 + m^2c^4 $. The dissipative effects explored here are described by an evolution equation that can be regarded as a nonlinear version of the celebrated telegraphists equation, unifying within one single theoretical framework the nonlinear Klein-Gordon equation, a nonlinear Schroedinger equation, and the power-law diffusion (porous media) equation. The associated dynamics exhibits physically appealing soliton-like traveling solutions of the $q$-plane wave form with a complex frequency $ω$ and a $q$-Gaussian square modulus profile.
description: 5 pages
The Regionalist Vision of Henry Wright: Lessons in Sustainability
Creators: name: Larsen, Kristin
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: Though lesser known than his Regional Planning Association of America colleagues – Clarence Stein, Lewis Mumford, and Benton MacKaye – Henry Wright played a key role in implementing and promoting critical regional planning ideals. In doing so, he embraced what Wheeler (2002) characterizes as “ecological regionalism” and more recently Berke (2008) describes as the “environmentally sustainable urban form” (p. 395). After earning his degree in architecture at the University of Pennsylvania, Wright spent his early professional years in the office of nationally prominent landscape architect George Kessler. Here he gained a sensitivity to site design, including grading and infrastructure development, and a broadening understanding of natural systems and networks. His subsequent employment with the Emergency Fleet Corporation designing communities for war workers during World War I, established his expertise in economically designing communities. During the 1920s and until his death in 1936, he applied this expertise to design communities that reflect many of the current criteria of sustainability, new regionalism, and green infrastructure. This paper examines archival writings of Wright, his contemporaries, and more recent explorations of sustainability, green infrastructure, and new regionalism to assess the elements of Wright’s community planning, site design, and broader regionalist ideas that prefigured these modern concepts. As Planning Advisor to the New York Commission of Housing and Regional Planning, his contributions towards a 1926 proposal for statewide planning forms a critical component of this examination. Further, his lesser known articles on town planning, land development, and the economics of housing design offer a sustained perspective regarding the dynamics of his contributions to regionalism. These include conceptual new town designs integrating intensive mixed use urban areas punctuated with outlying parks as part of a balanced regional network of communities. A comparative and critical analysis of these contributions within the context of the contributions of his RPAA colleagues and regional scholarship today highlights his legacy as an architect, landscape architect, and planner.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Territorial planning in Central America in the XXIst. Century: common trends, originalities, and challenges
Creators: name: Ferrufino, Carlos
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: This paper studies the transformation processes occurred in the field of territorial planning in Guatemala, Belize, Honduras, El Salvador, Nicaragua, Costa Rica, Panama, and the Dominican Republic during the XXIst. century. All countries have undertaken major conceptual and political changes in their planning systems in the last 15 years through the approval of national planning legislation, policies, plans, and guidelines. These instruments are concerned with: environmental issues, particularly climate change adaptation and economic development. Moreover, a new Territorial Planning Agenda has emerged within the Central American Integration System (SICA) providing with a new regional framework that fosters change at the national level. Nonetheless, national particularities persist, related with different planning histories, and institutional designs. Some countries maintain predominant urban planning practices whereas others are more oriented by environmental concerns or national development strategies. In this scenario common challenges appear in terms of: institutional design, articulation between national and local levels, and addressing urgent social issues. Future perspectives for territorial planning in Central America will be related to: resolve institutional conflicts, gaps and overlaps; strength professional capabilities; consolidate the social relevance of the discipline and the pursuit of regional agendas without losing the diversity of current pluralistic approaches.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Narratives of a transformation: The role of space in the advent of neoliberal planning in Bogotá.
Creators: name: Torino, Giulia
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: This text aims to explore, with a critical perspective intellectually rooted in postcolonial theory, one among the most controversial urban transformations of postmodern Latin America: the one that took place in Bogotá chiefly between 1993 and 2003, and that dealt primarily with the city’s public space. By focusing on the spatial aspects of change (according to Henri Lefebvre’s trialectics of social, physical and mental space) and, within that, on the urban processes and projects that determined a detachment between imaginary and real Bogotá, the article aims to critically query the most prominent and first case of postmodern urban transformation in Colombia, through the analysis of the contestation that such change introduced between official and unofficial urban narratives. From the analysis of the diversity of urban narratives that emerged from a specific case – the alameda El Porvenir, this work locates the urban transformation experienced by Bogotá within those local/global phenomena of rapid urban development that seem to call with growing force for the epistemological reformulation of the symbology and role of space in postmodern cities, as well as for more critically aware theorisations of its codes of production. The analysis of the narratives emerged from the case of the alameda El Porvenir will help to clarify and, hopefully, start relocating the contested “success” of the neoliberal urban agenda that, locally, has been driving urban transformations in Colombia since then. While, regionally, it has contributed to change the way public space is conceived (and planned) in Latin American cities.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Hydraulic analysis of stream restoration on flood wave propagation
Creators: name: Sholtes, Joel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Channel and floodplain restoration can enhance the ability of a channelized or incised reach to temporarily store the flow and dissipate the energy of passing flood waves. Elements of restoration design that can enhance flood wave attenuation include the introduction of meanders, which reduces channel slope and increases channel length, restoring channel-floodplain connectivity, and re-vegetating banks and the floodplain. I examined the efficacy of stream restoration to attenuate floods given the scale at which it occurs and the magnitude of channel change possible by quantifying flood wave attenuation on two restored reaches located in urban and rural catchments and on hypothetical stream reaches representing median values of stream restoration projects in North Carolina using a dynamic flood routing model (UNET in HEC-RAS). Floods routed in impaired and restored reach models of field sites either exhibited very small augmentation to attenuation, largely due to assumed increases in floodplain roughness, or a decrease in attenuation. Modeled sensitivity results indicated that decreases to slope and increases to channel and floodplain roughness demonstrated the highest relative impact to attenuation. Floods of intermediate magnitude (between 2 and 5 yr recurrence interval) were impacted most by restoration, especially those confined to the channel under the impaired morphology but able to access the floodplain under the restored morphology.
Isolation and Cytotoxic Potency of Endophytic Fungi Associated with Dysosma difformis, a Study for the Novel Resources of Podophyllotoxin
Creators: name: Tran, Hoa Thi
name: Nguyen, Giang Thu
name: Nguyen, Hong Ha Thi
name: Tran, Huyen Thi
name: Tran, Quang Hong
name: Tran, Quang Ho
name: Ninh, Ngoc Thi
name: Tien, Phat
name: Chu, Ha Hoang
name: Pham, Ngoc Bich
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
subject: Ecology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified

description: Endophytic fungi are promising sources for the production of podophyllotoxin-an important anticancer compound, replacing depleted medical plants. In this study, the endophytes associated with Dysosma difformis-an ethnomedicinal plant species were isolated to explore novel sources of podophyllotoxin. Fifty-three endophytic fungi were isolated and identified by morphological observation and ITS-based rDNA sequencing, assigning them to 27 genera in 3 divisions. Fusarium was found the most prevalent genus with a colonization frequency of 11.11%, followed by Trametes (9.26%) and Penicillium (7.41%). Phylogenetic trees were constructed for the endophytic fungi community in two collection sites, Ha Giang and Lai Chau, revealing the adaptation of the species to the specific tissues and habitats. Cytotoxic activity of endophytic fungal extracts was investigated on cancer cell lines such as SK-LU-1, HL-60, and HepG2, demonstrating strong anti-cancer activity of six isolates belonging to Penicillium, Trametes, Purpureocillium, Aspergillus, and Ganoderma with IC50 value of lower than 10 µg/mL. The presence of podophyllotoxin was indicated in Penicillium, Trametes, Aspergillus and for the first time in Purpureocillium and Ganoderma via high-performance liquid chromatography, which implied them as a potential source of this anti-cancer compound.
The Transformation of the Santo Antonio District, in Recife, Brazil, (1938-1949)
Creators: name: Moreira, Fernando Diniz
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: The city of Recife became a privileged field of experimentation for the new ideas of Urbanism, having many plans made between 1927 and 1943 and attracting the interest of the most important urban planners throughout the country. Initiated by the presence of the French urban planner Alfred Agache, the debate saw a series of proposals, studies, suggestions published in the local and national journals and newspapers. Santo Antonio was the administrative and commercial center of the city, with many public buildings and shops. Most of the debate was centered around the transformation of the central district, the island of Santo Antonio. Financial constraints prevented more expropriations and the project was reduced to a single large avenue and its neighboring blocks of buildings. The new avenue was a brutal intervention in the district, destroying eighteen blocks of the city. From a large square facing the river, the avenue starts 60 meters width, decreasing to 40 in the middle and reaching the 30 meters when arriving at the Independência Square, in the center of the district. Along this length, these volumes are separated by two narrow streets, which are barely perceptible; when one is on the avenue these streets cannot be seen due to the masses of these volumes. The new avenue, later called Guararapes, was intended to modernize the old center, transforming it into a monumental ensemble. Its verticalization, greater density and concentration closely resembled the business-center proposed by Agache for Rio. In the perspective submitted with the plan, one perceives velocity and fluidity, as converging lines and the cornices of the buildings conduct eyes to the vanishing point. The buildings were not there to be individually seen or admired, but to compose scenery. Legislation produced the desired profile (building heights and setbacks) of the avenue. The replacement of the colonial urban fabric by a new pattern was due to the establishment of building codes regulating building codes determined alignment of facades, volumetric unity of blocks and concordance of heights and architectural motifs. The new urban design communicated an intense image of power and discipline through its architectural mass, monumental scale and vast open spaces. It was clearly intended to form of urban scenery, expressing Vargas Regime corporatism, social control, and state regulatory interventionism. This paper explores the role of the building codes in the weaving of urban elements, dynamic forces and desires of patrons, bureaucrats, and architects towards the creation of a modern district.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation
Representing Najaf: an investigation into the current pressure on the physical and social fabric of Najaf’s old town
Creators: name: Abid, Sadiq
Publisher: name: International Planning History Society Proceedings
Year: 2016

description: Day by day social life in the core of historical cities in Iraq has changed, and there are different outcomes which have an impact on the ground. This paper seeks to examine the extent to which the physical and social fabric of the al-Houaish neighbourhood has become redundant, and why the original families of long standing descent have chosen not to live there. Briefly, the al-Houaish neighbourhood is a significant part of the holy city of Najaf, a pilgrimage city in Iraq. The al-Houaish has a special character, and it is of particular interest because it has historical and cultural values, but it has been neglected. The aims of this paper are to highlight the current pressures on the social and urban fabric, explain why that fabric is worth protecting, and what the difficulties are. The paper uses documentary evidence and evidence gathered through interviews with stakeholders, local residents, heritage elites and decision makers, and I will examine the approach taken in detail to reveal the problems that exist in applying international standards of heritage protection on the ground in Iraq. The findings in this paper are summarized into two parts physical and social fabric. The rapid development inside the old town, increase in land value, the huge number of visitors, and the governments’ neglect of services, are putting great pressure on the physical fabric. Besides, the lacks of clear regulation encourage building's authorities to change the land use from residential to commercial use. Moreover, the political issues led to a change in the social demography to weaken the power of the religious scholars, and that led to weak the social relationships and activities in the historic neighbourhood. In addition, the Najaf old town cannot offer big houses, wide roads, parks, and other services compared with the new neighbourhood, and therefore it did not and could not satisfy these needs. In conclusion, there is no overall management in place, and therefore the al-Houaish is losing both its historic physical and social fabric, and is undergoing much demolition. Thus, the process of heritage protection on the ground needs both the government and local citizens’ attentions to be able to stand and survive. Ultimately, there is need of a team on the site, and possibly a steering committee.
description: International Planning History Society Proceedings, Vol. 17 No. 1 (2016): HISTORY URBANISM RESILIENCE: Ideas on the Move and Modernisation