Ecological Population Expansion of the Introduced Crayfish, Orconectes Virilis

Author Institution: Chesapeake Biological Laboratory, Solomons, Maryland ; Water Pollution Control Commission, State of Maryland, Annapolis, Marylan

Future challenges for vection research: definitions, functional significance, measures, and neural bases

This paper discusses four major challenges facing modern vection research. Challenge 1 (Defining Vection) outlines the different ways that vection has been defined in the literature and discusses their theoretical and experimental ramifications. The term vection is most often used to refer to visual illusions of self-motion induced in stationary observers (by moving, or simulating the motion of, the surrounding environment). However, vection is increasingly being used to also refer to non-visual illusions of self-motion, visually-mediated self-motion perceptions, and even general subjective experiences (i.e. feelings) of self-motion. The common thread in all of these definitions is the conscious subjective experience of self-motion. Thus, Challenge 2 (Significance of Vection) tackles the crucial issue of whether such conscious experiences actually serve functional roles during self-motion (e.g., in terms of controlling or guiding the self-motion). After more than 100 years of vection research there has been surprisingly little investigation into its functional significance. Challenge 3 (Vection Measures) discusses the difficulties with existing subjective self-report measures of vection (particularly in the context of contemporary research), and proposes several more objective measures of vection based on recent empirical findings. Finally, Challenge 4 (Neural Basis) reviews the recent neuroimaging literature examining the neural basis of vection and discusses the hurdles still facing these investigations

How We Can Pay for Health Care Reform

Describes savings and revenue sources and policies to reduce healthcare spending that could finance comprehensive reform with a public option, such as reducing physician and hospital payments, investing in prevention programs, and capping tax exclusions

Reef height drives threshold dynamics of restored oyster reefs

Nonlinear threshold responses to biotic or abiotic forcing may produce multiple population trajectories dependent upon initial conditions, which can reinforce population recovery or drive local ex - tinction, yet experimental tests of this phenomenon are lacking in marine ecosystems. In field experiments at 4 sites in 2 tributaries of lower Chesapeake Bay, we examined demographic responses (density and survival) of eastern oyster Crassostrea virginica populations to reef height and associated gradients in sediment deposition and habitat complexity. After 2 yr, oyster reefs exhibited diverging trajectories to ward either degradation or persistence, dependent upon initial reef height. Reefs higher than 0.3 m supported greater oyster density, survival, and reef complexity, whereas sediment deposition was reduced. Reefs lower than 0.3 m experienced heavy sediment deposition and were eventually buried. These observations (1) provide experimental evidence for threshold dynamics in marine species, (2) suggest that the collapse of oyster populations was largely due to anthropo - genic habitat degradation that eliminated positive feed - backs and which may have created an alternative reef trajectory towards local extinction, and (3) indicate an avenue by which oyster restoration is achievable

An Unsettling Outcome: Why the Florida Supreme Court Was Wrong to Ban All Settlement Evidence in \u3ci\u3eSaleeby v Rocky Elson Construction, Inc.\u3c/i\u3e, 3 So. 3d 1078 (Fla. 2009)

It is rare that a court as sophisticated as the Florida Supreme Court casually makes a fundamental mistake in an important area of the law. Unfortunately, Saleeby v. Rocky Elson Construction, Inc., 3 So. 3d 1078 (Fla. 2009) represents one of these unusual instances. The Court was faced with a simple question: may evidence pertaining to a prior settlement be offered at trial when it is relevant to something other than liability or the invalidity or amount of the pending claim. The universal answer under both federal law and the law of other states is yes, as long as the probative value of the evidence outweighs its prejudicial impact. In Saleeby, the Florida Supreme Court held that the answer is a resounding “no.” The result could be a miscarriage of justice – for instance, in a case in which a witness’s testimony is effectively “purchased” through an overly generous settlement, but the fact-finder will be prevented by the Saleeby holding from finding this out

An Unsettling Outcome: Why the Florida Supreme Court Was Wrong to Ban All Settlement Evidence in \u3ci\u3eSaleeby v Rocky Elson Construction, Inc.\u3c/i\u3e, 3 So. 3d 1078 (Fla. 2009)

It is rare that a court as sophisticated as the Florida Supreme Court casually makes a fundamental mistake in an important area of the law. Unfortunately, Saleeby v. Rocky Elson Construction, Inc., 3 So. 3d 1078 (Fla. 2009) represents one of these unusual instances. The Court was faced with a simple question: may evidence pertaining to a prior settlement be offered at trial when it is relevant to something other than liability or the invalidity or amount of the pending claim. The universal answer under both federal law and the law of other states is yes, as long as the probative value of the evidence outweighs its prejudicial impact. In Saleeby, the Florida Supreme Court held that the answer is a resounding “no.” The result could be a miscarriage of justice – for instance, in a case in which a witness’s testimony is effectively “purchased” through an overly generous settlement, but the fact-finder will be prevented by the Saleeby holding from finding this out

Alkali Oxides. Analysis of Bonding and Explanation of the Reversal of Ordering of the 2Σ and 2Π States

We analyze the bonding in alkali oxides, MO, for M = Li, Na, K, Rb, and Cs. Using ab initio correlated wave functions we find that the ground state is ²II for M = Li, Na, and K and that the ground state is ²Ʃ^+ for M = Rb and Cs. The origin of this effect is explained

Association of acculturation with cardiac structure and function among Hispanics/Latinos: a cross-sectional analysis of the echocardiographic study of Latinos.

OBJECTIVE:Hispanics/Latinos, the largest immigrant population in the USA, undergo the process of acculturation and have a large burden of heart failure risk. Few studies have examined the association of acculturation on cardiac structure and function. DESIGN:Cross-sectional. SETTING:The Echocardiographic Study of Latinos. PARTICIPANTS:1818 Hispanic adult participants with baseline echocardiographic assessment and acculturation measured by the Short Acculturation Scale, nativity, age at immigration, length of US residence, generational status and language. PRIMARY AND SECONDARY OUTCOME MEASURES:Echocardiographic assessment of left atrial volume index (LAVI), left ventricular mass index (LVMI), early diastolic transmitral inflow and mitral annular velocities. RESULTS:The study population was predominantly Spanish-speaking and foreign-born with mean residence in the US of 22.7 years, mean age of 56.4 years; 50% had hypertension, 28% had diabetes and 44% had a body mass index &gt;30 kg/m2. Multivariable analyses demonstrated higher LAVI with increasing years of US residence. Foreign-born and first-generation participants had higher E/e' but lower LAVI and e' velocities compared with the second generation. Higher acculturation and income &gt;20K were associated with higher LVMI, LAVI and E/e' but lower e' velocities. Preferential Spanish-speakers with an income <20K had a higher E/e'. CONCLUSIONS:Acculturation was associated with abnormal cardiac structure and function, with some effect modification by socioeconomic status