640 research outputs found
The Effect of Golf Course Location on Housing Value
Structural and locational characteristics are known to affect housing prices, and numerous studies have explored many of these characteristics. However very little empirical information was available on the effect of golf course location for improved property. Two recent studies find that building on a golf course adds 7 to 8 percent to the value of property. However, we find that for a private development on a barrier island, building a villa or single family home on a golf course does not have any significant impact on price. Specific locational factors may explain this unexpected result
Coastal Development, Environmental Amenities, and Market Forces: An Application of Economic Theory
James R. Rinehart, Ph.D., is professor of economics, Francis Marion University, Florence, SC 29501.
Jeffrey J. Pompe, Ph.D., is associate professor of economics, Francis Marion University, Florence, SC 29501
Refurbishment of damaged tools using the combination of GTAW and laser beam welding
This paper presents the use of two welding processes for the refurbishment of damaged industrial tools. In the first part the problem is presented followed by the comparison of GTAW and laser welding in terms of repair welding of damaged tools. The macrosections of the welds show the difference between both welding processes in repairing of damaged tools. At the conclusion the main findings are presented. In many cases it is useful to use both welding processes in order to achieve better weld quality and to make welding more economical. The order of the technology used depends on the tool material, the use of the tool and the tool damage
Refurbishment of damaged tools using the combination of GTAW and laser beam welding
This paper presents the use of two welding processes for the refurbishment of damaged industrial tools. In the first part the problem is presented followed by the comparison of GTAW and laser welding in terms of repair welding of damaged tools. The macrosections of the welds show the difference between both welding processes in repairing of damaged tools. At the conclusion the main findings are presented. In many cases it is useful to use both welding processes in order to achieve better weld quality and to make welding more economical. The order of the technology used depends on the tool material, the use of the tool and the tool damage
Spatial periodic and homogeneous transverse stress loading on ITER TF Nb3Sn bronze and internal tin strand
The transport properties of the superconducting Nb3Sn layers in the strands
strongly depend on the strain state. Knowledge of the influence of axial
strain, periodic bending and contact stress on the critical current (Ic) of the
used Nb3Sn strands is inevitable to gain sufficient confidence in an economic
design and stable operation of ITER CICCs. In the past years we have measured
the Ic and n-value of various ITER Nb3Sn strands with different layout in the
TARSIS facility, when subjected to spatial periodic contact stress at a
temperature of 4.2 K and in a magnet field of 12 T. Recently we have made the
setup suitable for application of homogeneous load along the length of the wire
(125 mm) in order to evaluate possible differences related to spatial stress
and possible current distribution. We present an overview of the results
obtained so far on an ITER TF bronze and internal tin strand.Comment: to be published in IEEE Trans Appl Supercon
Challenges for Developing Rechargeable Room-Temperature Sodium Oxygen Batteries
© 2018 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The development of high energy-density and low-cost energy storage devices requires new chemistry beyond the horizon of current state-of-the-art lithium-ion batteries. Recently, sodium/oxygen (Na/O2) batteries have attracted great attention as one possible battery type among the new generation of rechargeable batteries. They convince with superior energy density, a relatively simple cell reaction, and abundance of sodium. Research on Na/O2 batteries has progressed quickly in recent years. However, a fundamental understanding underpinning the complex chemical/electrochemical side reactions is still insufficient, and many challenges remain unsolved for real practical applications. Herein, recent achievements and remaining issues for the development of rechargeable Na/O2 batteries are summarized. The discussion focuses on cell reaction mechanisms as well as cathode materials, sodium anodes, and electrolytes as key components of this type of battery. Furthermore, perspectives for future research and technological advances of Na/O2 batteries are outlined
Information Flow through a Chaotic Channel: Prediction and Postdiction at Finite Resolution
We reconsider the persistence of information under the dynamics of the
logistic map in order to discuss communication through a nonlinear channel
where the sender can set the initial state of the system with finite
resolution, and the recipient measures it with the same accuracy. We separate
out the contributions of global phase space shrinkage and local phase space
contraction and expansion to the uncertainty in predicting and postdicting the
state of the system. Thus, we determine how the amplification parameter, the
time lag, and the resolution influence the possibility for communication. A
novel representation for real numbers is introduced that allows for a
visualization of the flow of information between scales.Comment: 14 pages, 13 figure
Geometry-dependent electrostatics near contact lines
Long-ranged electrostatic interactions in electrolytes modify their contact
angles on charged substrates in a scale and geometry dependent manner. For
angles measured at scales smaller than the typical Debye screening length, the
wetting geometry near the contact line must be explicitly considered. Using
variational and asymptotic methods, we derive new transcendental equations for
the contact angle that depend on the electrostatic potential only at the three
phase contact line. Analytic expressions are found in certain limits and
compared with predictions for contact angles measured with lower resolution. An
estimate for electrostatic contributions to {\it line} tension is also given.Comment: 3 .eps figures, 5p
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