2,384 research outputs found
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https://digitalcommons.salve.edu/goelet-new-york/1186/thumbnail.jp
Harbor Lines and the Public Trust Doctrine in Washington Navigable Waters
Since 1971 the Shoreline Management Act (SMA) has been the dominant legal tool for managing the Washington coastal zone. However, use of state-owned beds of navigable fresh and salt waters below low tide or the low-water line is still controlled largely by the harbor line system established in the 1889 state constitution. Almost no attention has been paid to the harbor line system in the legal literature, or to its relationship to the other laws concerned with coastal zone management. This article briefly analyzes the relationship of the harbor line system to the SMA, to the various federal laws concerned with the coastal zone, and to the public trust doctrine, and then describes the origin, development, and operation of the system in Washington
Probiotic Bacteria Influence the Composition and Function of the Intestinal Microbiota
Probiotics have a range of proposed health benefits for the consumer, which may include modulating the levels of beneficial elements in the microbiota. Recent investigations using molecular approaches have revealed a human intestinal microbiota comprising over 1000 phylotypes. Mechanisms whereby probiotics impact on the intestinal microbiota include competition for substrates, direct antagonism by inhibitory substances, competitive exclusion, and potentially host-mediated effects such as improved barrier function and altered immune response. We now have the microbial inventories and genetic blueprints to begin tackling intestinal microbial ecology at an unprecedented level of detail, aided by the understanding that dietary components may be utilized differentially by individual phylotypes. Controlled intervention studies in humans, utilizing latest molecular technologies, are required to consolidate evidence for bacterial species that impact on the microbiota. Mechanistic insights should be provided by metabolomics and other analytical techniques for small molecules. Rigorous characterization of interactions between the diet, microbiota, and probiotic bacteria will provide new opportunities for modulating the microbiota towards improving human health
Harbor Lines and the Public Trust Doctrine in Washington Navigable Waters
Since 1971 the Shoreline Management Act (SMA) has been the dominant legal tool for managing the Washington coastal zone. However, use of state-owned beds of navigable fresh and salt waters below low tide or the low-water line is still controlled largely by the harbor line system established in the 1889 state constitution. Almost no attention has been paid to the harbor line system in the legal literature, or to its relationship to the other laws concerned with coastal zone management. This article briefly analyzes the relationship of the harbor line system to the SMA, to the various federal laws concerned with the coastal zone, and to the public trust doctrine, and then describes the origin, development, and operation of the system in Washington
Analyzing large-scale conservation interventions with Bayesian hierarchical models: a case study of supplementing threatened Pacific salmon.
Myriad human activities increasingly threaten the existence of many species. A variety of conservation interventions such as habitat restoration, protected areas, and captive breeding have been used to prevent extinctions. Evaluating the effectiveness of these interventions requires appropriate statistical methods, given the quantity and quality of available data. Historically, analysis of variance has been used with some form of predetermined before-after control-impact design to estimate the effects of large-scale experiments or conservation interventions. However, ad hoc retrospective study designs or the presence of random effects at multiple scales may preclude the use of these tools. We evaluated the effects of a large-scale supplementation program on the density of adult Chinook salmon Oncorhynchus tshawytscha from the Snake River basin in the northwestern United States currently listed under the U.S. Endangered Species Act. We analyzed 43 years of data from 22 populations, accounting for random effects across time and space using a form of Bayesian hierarchical time-series model common in analyses of financial markets. We found that varying degrees of supplementation over a period of 25 years increased the density of natural-origin adults, on average, by 0-8% relative to nonsupplementation years. Thirty-nine of the 43 year effects were at least two times larger in magnitude than the mean supplementation effect, suggesting common environmental variables play a more important role in driving interannual variability in adult density. Additional residual variation in density varied considerably across the region, but there was no systematic difference between supplemented and reference populations. Our results demonstrate the power of hierarchical Bayesian models to detect the diffuse effects of management interventions and to quantitatively describe the variability of intervention success. Nevertheless, our study could not address whether ecological factors (e.g., competition) were more important than genetic considerations (e.g., inbreeding depression) in determining the response to supplementation
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Public placements of seasoned equity issues in Japan
In sharp contrast to results of empirical tests investigating the U.S. market, the announcement of a seasoned equity issue by Japanese firms causes stock prices to increase. A major institutional difference between the two markets involves the underwriting process through which the offer price is set. In the U.S., the offer price is typically set less than 24 hours before the stock is sold to the public. Offer prices in Japan, however, are announced a median of seven trading days before the end of the subscription period and is set at substantial discount below the current stock price. In addition, there are two ways to determine the offering prices, the fixed price method and the formula price method. The underwriters' certification hypothesis fits nicely under this institutional environment because fixed price issues offer more certification. Average announcement effect for firms using the fixed price method is positive, while the announcement effect is zero for the firms using the formula price method. In addition, after controlling for offering method, a significant negative correlation is found between the announcement day return and the discount. We also examine abnormal returns around the subscription period and issue day
Development of a new laser Doppler velocimeter for the Ames High Reynolds Channel No. 2
A new two-channel laser Doppler velocimeter developed for the Ames High Reynolds Channel No. 2 is described. Design features required for the satisfactory operation of the optical system in the channel environment are discussed. Fiber optics are used to transmit the megahertz Doppler signal to the photodetectors located outside the channel pressure vessel, and provision is made to isolate the optical system from pressure and thermal strain effects. Computer-controlled scanning mirrors are used to position the laser beams in the channel flow. Techniques used to seed the flow with 0.5-micron-diam polystyrene spheres avoiding deposition on the test-section windows and porous boundary-layer removal panels are described. Preliminary results are presented with a discussion of several of the factors affecting accuracy
Connecting general education programming with regionally-engaged learning economies: The results of a community inquiry and dialogue
There is a growing effort to more intentionally situate higher education as an anchor institution within a larger regional, social, political, and economic ecosystem. This paper describes the civic process and outcomes of a community inquiry that considered the relationship between general education programming at comprehensive universities and the trajectory of regional economies. The community inquiry leveraged intergroup dialogue techniques to provide a unique community perspective on potential ways general education can inform engaged learning economies. The result of this community inquiry and dialogue highlight three broad themes that could connect general education programs to engaged learning economies in other regions: campus-community partnerships, logistics of a general education program, and reconsidering the relationship between academic knowledge and soft skills. The results section describes, summarizes, and analyzes the proceedings from the perspective of community
Tunable Narrow Band Difference Frequency THz Wave Generation in DAST via Dual Seed PPLN OPG
We report a widely tunable narrowband terahertz (THz) source via difference frequency generation (DFG). A narrowband THz source uses the output of dual seeded periodically poled lithium niobate (PPLN) optical parametric generators (OPG) combined in the nonlinear crystal 4-dimthylamino-N-methyl-4-stilbazolium-tosylate (DAST). We demonstrate a seamlessly tunable THZ output that tunes from 1.5 THz to 27 THz with a minimum bandwidth of 3.1 GHz. The effects of dispersive phase matching, two-photon absorption, and polarization were examined and compared to a power emission model that consisted of the current accepted parameters of DAST
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