357 research outputs found
The effect of landfills on rural residential property values: Some empirical evidence.
Abstract
The question of whether solid waste landfills affect residential property values has long been a subject of debate. Past research has resulted in mixed conclusions. The current study examines six landfills, which differ in size, operating status, and history of contamination. The effect of each landfill is estimated by the use of multiple regression. In five of the landfills, no statistically significant evidence of an effect was found. In the remaining case, evidence of an effect was found, indicating that houses in close proximity to this landfill suffered an average loss of about six percent in value
New Geographic Records of the Flying Fox Bat Fly Cyclopodia horsfieldi de Meijere, 1899 (Diptera: Hippoboscoidea) from the Philippines
Abstract. This paper presents new geographic records for the nycteribiid bat fly Cyclopodia horsfieldi de Meijere, a widespread Old World endemic species parasitic on flying foxes. Additionally, this account represents the first published record of C. horsfieldi on Tawi-Tawi Island and in the Bicol Peninsula (southern Luzon)
Pathways to Attaining a Food Secure Philippines through a Competitive and Climate-Resilient Agri-Fisheries Sector
This document highlights the key messages drawn from climate adaptation efforts and events done with Philippines’ Department of Agriculture-Regional Field Offices (DA-RFOs) across the country. This brief, developed for the Climate Change Consciousness Week, offers DA a synthesis of lessons from the Adaptation and Mitigation Initiative in Agriculture (AMIA) village experience as a bankable model for establishing context specific, local adaptation platforms for developing and disseminating CRA technologies and processes. This brief also offers valuable policy insights for the Philippines’ National Adaptation Plan
Fostering local adaptation platforms for agriculture: How context specific climate-smart villages (CSVs) can relate to local adaptation efforts.
Local adaptation platforms help empower sub-national and local government players, civil society organizations, and public-private partnerships in demonstrating the validity of agro-ecology-specific solutions to current and future climate change impacts. This brief discusses how Climate-Smart Villages, good examples of local adaptation platform, have served as centers for discovery, adaptation, learning, and sharing of climate-smart agriculture in local communities
The AMIA Experience: Supporting local actions for Climate Resilient Agriculture
The brief tackles how the Adaptation and Mitigation Initiative in Agriculture (AMIA) Program of the Philippines’ Department of Agriculture (DA) served as a platform for supporting local actions for climate resilient agriculture. The document discusses a number of key lessons emerging from the AMIA Village experience on the importance of local platforms for adaptation in the form of Climate-Smart Villages towards overall resilience building of the sector
Analysis of retrofitted corroded steel pipes using internally bonded FRP composite repair systems
Steel pipelines play an important role in the oil and gas industry. Hence corrosion of the steel pipe systems during its service life is a critical issue for the industry. Fibre reinforced composites offer solutions with broad applicability and efficiency for the internal repair of these corroded pipelines. Understanding the behaviour of internal composite repair systems against different internal pressure regimes is an important aspect in the development of a repair system. This study develops the analyses of internal composite bonded repair systems for long steel pipes with an axisymmetric defect, based on Lame’s equation. Various levels of bonding between the steel and composite are studied. Fully bonded optimum internal composite repair thicknesses are determined using biaxial carbon and glass fibre composites for different levels of corrosions, using the Von Mises yielding and Tsai-Hill failure criterion approaches. Two case studies are illustrated using the design nomographs. The analysis technique used was found to be accurate when compared with finite element modelling results
Antivortices due to competing orbital and paramagnetic pair-breaking effects
Thermodynamically stable vortex-antivortex structures in a
quasi-two-dimensional superconductor in a tilted magnetic field are predicted.
For this geometry, both orbital and spin pair-breaking effects exist, with
their relative strength depending on the tilt angle \Theta. The spectrum of
possible states contains as limits the ordinary vortex state (for large \Theta)
and the Fulde-Ferrell-Larkin-Ovchinnikov state (for \Theta=0). The
quasiclassical equations are solved near H_{c2} for arbitrary \Theta and it is
shown that stable states with coexisting vortices and antivortices exist in a
small interval close to \Theta=0. The results are compared with recent
predictions of antivortices in mesoscopic samples.Comment: 11 pages, 3 figure
Temperature dependence of the upper critical field of an anisotropic singlet superconductivity in a square lattice tight-binding model in parallel magnetic fields
Upper critical field parallel to the conducting layer is studied in
anisotropic type-II superconductors on square lattices. We assume enough
separation of the adjacent layers, for which the orbital pair-breaking effect
is suppressed for exactly aligned parallel magnetic field. In particular, we
examine the temperature dependence of the critical field H_c(T) of the
superconductivity including the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO or LOFF)
state, in which the Cooper pairs have non-zero center-of-mass momentum q. In
the system with the cylindrically symmetric Fermi-surface, it is known that
H_c(T) of the d-wave FFLO state exhibits a kink at a low temperature due to a
change of the direction of q in contrast to observations in organic
superconductors. It is shown that the kink disappears when the Fermi-surface is
anisotropic to some extent, since the direction of q is locked in an optimum
direction independent of the temperature.Comment: 5 pages, 5 figures, revtex.sty, submitted to J.Phys.Soc.Jp
Effect of spiral spacing and concrete strength on behavior of GFRP-reinforced hollow concrete columns
Hollow concrete columns (HCCs) are one of the preferred construction systems for bridge piers, piles, and poles because they require less material and have a high strength-to-weight ratio. While spiral spacing and concrete compressive strength are two critical design parameters that control HCC behavior, the deterioration of steel reinforcement is becoming an issue for HCCs. This study explored the use of glass fiber-reinforced polymer (GFRP) bars as longitudinal and lateral reinforcement for hollow concrete columns and investigated the effect of various spiral spacing and different concrete compressive strengths (f′c). Seven HCCs with inner and outer diameters of 90 and 250 mm, respectively, and reinforced with six longitudinal GFRP bars, were prepared and tested. The spiral spacing was no spirals, 50, 100, and 150 mm; the f′c varied from 21 to 44 MPa. Test results show that reducing the spiral spacing resulted in increased HCC uniaxial compression capacity, ductility, and confined strength due to the high lateral confining efficiency. Increasing f′c, on the other hand, increased the axial-load capacity but reduced the ductility and confinement efficiency due to the brittle behavior of high compressive-strength concrete. The analytical models considering the axial load contribution of the GFRP bars and the confined concrete core accurately predicted the behavior of the HCCs after the spalling of the concrete cover or at the post-loading behavior
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