292,548 research outputs found
Spring Break: Pulling in the Student Market
No full textSpring Break is big business for many tourism destinations. Although many students are budget conscious, by sheer volume, they make a noteworthy financial impact on a destination and the local community. To better understand what pulls current domestic Spring Break travelers to their destination choice, a study was conducted evaluating the importance of Spring Break destination attributes in students’ trip decisions. Exploratory factor analysis was conducted which reduced 24 pull attributes to four core Spring Break decision making pull factors. The core factors identified are: Destination Attributes, Financial, Accessibility, and Uncertainty Avoidance. Further analysis demonstrated only limited significant differences in the core factors when analyzed in terms of the travelers’ demographic and behavioral profiles
Low Spring Constant Regulates P-Selectin-PSGL-1 Bond Rupture
No full textAbstractForced dissociation of selectin-ligand bonds is crucial to such biological processes as leukocyte recruitment, thrombosis formation, and tumor metastasis. Although the bond rupture has been well known at high loading rate rf (≥102pN/s), defined as the product of spring constant k and retract velocity v, how the low rf (<102pN/s) or the low k regulates the bond dissociation remains unclear. Here an optical trap assay was used to quantify the bond rupture at rf≤20pN/s with low k (∼10−3–10−2pN/nm) when P-selectin and P-selectin glycoprotein ligand 1 (PSGL-1) were respectively coupled onto two glass microbeads. Our data indicated that the bond rupture force f retained the similar values when rf increased up to 20pN/s. It was also found that f varied with different combinations of k and v even at the same rf. The most probable force, f*, was enhanced with the spring constant when k<47.0×10−3pN/nm, indicating that the bond dissociation at low rf was spring constant dependent and that bond rupture force depended on both the loading rate and the mechanical compliance of force transducer. These results provide new insights into understanding the P-selectin glycoprotein ligand 1 bond dissociation at low rf or k
Internal Phosphorus Loading in Spring Lake: Year 2
No full textExperimental and desktop studies were conducted during 2004 to better understand the factors affecting internal phosphorus (P) loading in Spring Lake, Michigan. A prior study in 2003 resulted in estimates that between 55 and 65% of the total phosphorus entering the water column of Spring Lake, on an annual basis, originated via internal loading from the sediments. The results from the current study indicated the following:
Phosphorus release rates were no different at alum concentrations of ≥ 15 mg alum/L compared to 24 mg/L. However, the higher alum concentration is likely to provide greater spatial coverage over the sediments in the lake, more protection from alum redistribution after sediment resuspension, and is still well below concentrations of environmental concern.
Resuspension events, which would cause the sediments to become mixed, substantially increase total phosphorus concentrations in the water column, even at high alum concentrations, although the total soluble phosphorus concentrations remain low in the water column provided alum is present.
Bioturbation has the potential to increase phosphorus release into the water column. However, several lines of evidence in our data suggest that this process does not play a significant role in Spring Lake sediments. Desktop analyses focusing on lake morphometry revealed that Spring Lake is very susceptible to internal loading but not very susceptible to resuspension events. In addition, calculations indicated that given the current concentration of P in the sediment, internal P loading can continue in Spring Lake for another 40 years, even if all new sources of phosphorus are eliminated.
Taken together, these results indicate that an alum application of 25 mg aluminum/L is likely to result in a substantial reduction in the phosphorus concentration in the water column of Spring Lake. The length of treatment effectiveness will depend on the degree to which 1) the alum remains in place on the sediment-water interface and 2) current and future external phosphorus loading to Spring Lake is reduced
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Spring Protection
No full textSprings occur where water from an underground aquifer flows out of the ground to the surface. The spring can occur where the water flows out of the ground by gravity, or it could be an artesian spring where the water appears at the surface under pressure from a confined aquifer below. The point at which the water reaches the ground surface is known as ‘the eye of the spring’. This Technical Brief looks at spring protection including the catchment area, the immediate area around the spring and the construction of spring boxes. It also highlights two methods of reducing sediments in the water coming from large springs and introduces alternative protection methods to spring boxes. This Technical Brief does not discuss the distribution system between spring box and supply.</p
Terahertz Fabry-Perot Cavity Leaky-wave Antennas
No full textIn this work we examine the recent efforts made in the design of either efficient or reconfigurable Fabry-Perot cavity leaky-wave antennas (FPC-LWAs) in the terahertz (THz) range. We start by discussing the radiating performance of an FPC-LWA consisting of a grounded dielectric slab (GDS) covered with a periodic arrangement of fishnet-like unit cells. This antenna design shows a rather high directivity at broadside, but is not capable of reshaping the pattern at fixed frequency. To this purpose, an FPC-LWA, where the periodic arrangement of fishnet-like unit cell is replaced by a uniform (i.e., non-patterned) graphene sheet, is considered to exploit the tunable properties of graphene. The performance of a graphene-based FPC-LWA is analyzed and improved by covering the structure with a high-permittivity material and slightly changing the position of graphene within the substrate. The radiating properties of all the THz structures proposed in this work are evaluated through fully-analytical techniques and validated through numerical results and full-wave simulations
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
RADAR-base/radar-spring: radar-spring 1.2.0
No full text<p>Changes since version 1.1.5:</p>
<ul>
<li>Updated project build and dependencies by @blootsvoets in <a href="https://github.com/RADAR-base/radar-spring/pull/15">https://github.com/RADAR-base/radar-spring/pull/15</a><ul>
<li>MP Auth 0.8.2 -> 2.0.0</li>
<li>Kotlin 1.3 -> 1.8</li>
<li>Java 8 -> 17</li>
<li>Gradle 6 -> 8</li>
<li>Github Actions latest versions (removing deprecated Node 12 calls)</li>
<li>Spring 5 -> 6</li>
<li>Added several build features<ul>
<li>ktlint for linting (and fixed listing issues)</li>
<li>dependencyUpdates for easier updating</li>
<li>dokka Javadoc-compatible documentation</li>
<li>put all plugin and dependency versions in <code>gradle.properties</code></li>
</ul>
</li>
</ul>
</li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/RADAR-base/radar-spring/compare/v1.1.5...v1.2.0">https://github.com/RADAR-base/radar-spring/compare/v1.1.5...v1.2.0</a></p>
Parameters used for the mass-spring-damper system model.
No full textParameters used for the mass-spring-damper system model.</p
vdenotaris/spring-boot-security-saml-sample: 2.1.0.RELEASE
No full text<p><strong>About the project:</strong></p>
<ul>
<li>Project Version: 2.1.0.RELEASE</li>
<li>Date: March 2019</li>
</ul>
<p><strong>Dependencies:</strong></p>
<ul>
<li>Spring Boot: 2.1.3.RELEASE</li>
<li>Spring Security SAML Extension: 1.0.3.RELEASE</li>
</ul>
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