cssi/SciSciGPT-SciSciNet huggingface dataset:
Can Basic Individual Differences Shed Light on the Construct Meaning of Assessment Center Evaluations

The construct meaning of assessment center evaluations is an important unresolved issue in I/O psychology. This study hypothesized that Cognitive Ability and personality traits are primary correlates of evaluators’ overall assessment ratings (OARs). Meta–analysis results based on 65 correlations indicate the following mean construct–level correlations with OARs: .67 for Cognitive Ability, .50 for Extraversion, .35 for Emotional Stability, .25 for Openness, and .17 for Agreeableness; yielding a multiple R of .84. These findings support our hypothesis and cast light on the construct meaning of assessment center evaluations.
Development and Implementation of a Strong Mentoring Program to Increase Scholarly Productivity and Support Nurse Faculty Retention.

ABSTRACT This article discusses the development of a nurse faculty mentoring program at a public, four-year, comprehensive university in southeastern United States. The faculty mentoring program was designed to build the professional and scholarly development of both new faculty and their experienced faculty mentors. An additional goal was to encourage retention within the department.
Possible role of COVID-19 in the relapse of Klein-Levin Syndrome

Klein-Levin Syndrome (KLS) is an extremely rare neurological disorder which can manifest as recurring spells of sleepiness, cognitive disturbances and behavioral changes. We present a novel case of KLS relapse in the setting of Coronavirus disease-19 (COVID-19). A 36-year-old male who had a known history of KLS since adolescence was admitted with sleepiness and behavioral disturbances. Brain imaging and autoimmune encephalitis work was unremarkable. The patient was diagnosed with a relapse of KLS secondary to COVID-19 based on symptomology and lack of any other precipitating factor. The patient required 8 days of hospitalization and was treated with benzodiazepines due to a history of robust response to lorazepam during a prior episode. The patient progressively improved and was discharged home on lorazepam taper. We report that similar to other neurotropic viruses, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) could be the culprit in instigating KLS relapse.
Deep Convolutional Correlation Iterative Particle Filter for Visual Tracking.

This work proposes a novel framework for visual tracking based on the integration of an iterative particle filter, a deep convolutional neural network, and a correlation filter. The iterative particle filter enables the particles to correct themselves and converge to the correct target position. We employ a novel strategy to assess the likelihood of the particles after the iterations by applying K-means clustering. Our approach ensures a consistent support for the posterior distribution. Thus, we do not need to perform resampling at every video frame, improving the utilization of prior distribution information. Experimental results on two different benchmark datasets show that our tracker performs favorably against state-of-the-art methods.
Institutional factors associated with college students’ healthy physical activity and body composition: A first semester follow-up

OBJECTIVE The first aim of this study was to examine changes in freshman college students' health-enhancing physical activity (PA) and body composition across the first semester. Secondly, this study aimed to explore the role of socio-ecological variables on these processes. Methods: A sample of 166 participants (108 females, 58 males, Mage = 18.14[.96]) completed self-report pre-and posttest data on vigorous PA (VPA), moderate-to-vigorous PA (MVPA), and body mass index (BMI). Results: The results showed a statistically significant increase in BMI, but no statistically significant changes in VPA or MVPA. The findings revealed that our socio-ecological model predicted .71, .39, and .92 percent of the end of the year VPA, MVPA, and BMI, respectively. The findings highlighted the positive role of peer support, positive motivation, and university's Recreational Services on measured healthy behaviors. Conclusions: These findings suggest a need to increase college students' VPA.
Communication compilation for unreliable networks

Parallel programs running on top of generic protocols (e.g. TCP) in a cluster of workstations often do not perform or scale as well as one would expect. One reason for this is that both the performance and scalability of parallel applications are highly dependent on the speed of communication, yet the generic protocols used to guarantee reliable message delivery add unnecessary overhead which degrades the performance of the parallel application. The main thesis we explore in this paper is that it is possible to use knowledge of application behavior to design protocols that are more efficient. In particular, we investigate automatic techniques for generating optimized application-specific network protocols for parallel applications running on unreliable networks. Our algorithms assume that the application communication can be represented by a context free grammar. Such algorithms form the basis for a communication compiler.
Uniqueness results for the value function via direct trajectory-construction methods

We present some new results, together with a number of particularly simple and user-friendly versions of results obtained in recent years by the author and M. Malisoff, on the uniqueness of solutions of the Hamilton-Jacobi-Bellman equation (HJBE) for deterministic finite-dimensional optimal control problems under non-standard hypotheses. Our approach is completely control-theoretic and totally self-contained, using the systematic construction of special trajectories of various kinds, and not involving any PDE methods. We donot assume that the Lagrangian is positive, or that the dynamics is Lipschitz-continuous.
Preparing Preservice Educators for Cultural Diversity: How Far Have We Come?:

This article reviews research on the incorporation of multicultural education in preservice general and special education teacher preparation programs from 1997 to 2006. A total of 46 studies, 39 from general education and 7 from special education teacher education programs, met the criteria for inclusion in this literature review. Findings revealed that very few changes have occurred in this body of research in terms of the quantity, topics addressed, methods used, and gaps since the last time this literature was reviewed, in 1998 and in 2004. Despite these limitations, strengths are emerging in this body of research that can be used to pave the way for a more substantive and comprehensive research agenda in the future.
Self-Healing Materials

This article discusses the current developments and advances for the incorporation of a damage repair mechanism in composite materials. There are several approaches for imparting this functionality, but each approach can be described as belonging to one of two broad families, an active-phase mechanism or an active-matrix mechanism. Active-phase mechanisms incorporate another phase into the composite material, besides reinforcement and matrix, to accomplish damage repair. Active-matrix self-healing materials seek to incorporate a fundamental chemical phenomenon, such as reversible bonds, that can perform damage repair. Each of these approaches is described in detail including both the manufacturing or synthesis techniques and the material characterization approaches that have been adopted to assess self-healing capability. A brief summary and outlook is also provided that describes the current challenges and maturity of the field. Keywords: self-healing composite; microencapsulation; remendable polymer; hollow fiber; damage repair
Libraries and Their Publics: Rhetorics of the Public Library

Arguments about the future of libraries are more trenchant than ever. Yet questions about the nature of public libraries are inseparable from questions about their public character. Historically, competing arguments about the ideal relationship between libraries and their publics have mirrored evolving technologies that affect a library’s potential content and accessibility. But today, when socially excluded populations need libraries to gain the cultural capital necessary to participate in civil society, threats to public libraries also threaten the public sphere’s viability as a way for the disenfranchised to address the state.
Cutting the distance in distance education: Perspectives on what promotes positive, online learning experiences

Abstract This qualitative research study was designed to inform the development and implementation of effective online learning environments by exploring, from both teacher and student perspectives, what constitute effective online learning experiences. The study examined course content, tasks, and pedagogical approaches, as identified by students and instructors, which contributed to or hindered positive online learning experiences. Researchers interviewed 6 online course instructors and 10 adult students to understand their experiences in undergraduate and graduate level online degree programs. Using a Cognitive Apprenticeship Model to inform the analysis of data, findings revealed an emphasis on text-based content and lecture; instruction that led to disconnect between students, teachers, and course content and goals; and one innovative program that links real-world experiences with online classroom learning. Given the growing number of online programs, the study provides insight for course development and pedagogy as well as offers possibilities for additional research.
Testing for homogeneity I. The binomial and multinomial distributions

SUMMARY If we have k binomial samples of different sizes, we may sometimes be interested in the question of homogeneity, i.e. we may want to know whether the k samples all came from binomial distributions with the same parameter p. A similar question of homogeneity may arise if we have k samples from multinomial or Poisson distributions. This paper, which is the first of a series of two, treats the binomial and multinomial situations; the second paper will treat the Poisson case. Homogeneity tests already exist for the problems just mentioned, but these existing tests apparently were not constructed with any optimal power properties explicitly in mind. These papers approach the problem of homogeneity testing by attempting to construct tests having maximal power against certain reasonable alternative hypotheses. Some new tests result from this approach; these tests will be described and numerical illustrations will be presented. The traditional tests (i.e. the usual x2 tests) will also be discussed. For the binomial problem, all tests which are considered are applicable to the situation (frequently arising in genetics) in which some or all of the k sample sizes are small numbers (even as small as 2 or 3). Section 1 of this paper is concerned with testing for homogeneity for the binomial case; a number of biological applications are presented. In ? 3, we show briefly how the new test which is introduced in ? 1 may be generalized to the multinomial case. All of the more technical details have been relegated to the Mathematical Appendices, which form the last part of the paper.
Circularly polarised truncated-corner square patch microstrip rectenna for wireless power transmission

A circularly polarised rectenna using a truncated-corner square-patch microstrip antenna has been developed for wireless power transmission at 5.8 GHz. The gain and axial ratio achieved were 8.5 dBi and 0.5 dB at 5.82 GHz respectively. A GaAs Schottky barrier diode was employed for microwave to DC conversion with a maximum conversion efficiency of 60%.
Are 24 hours of ambulatory ECG monitoring necessary for a patient after infarction

The Beta-Blocker Heart Attack Trial was a randomized clinical trial of propranolol versus placebo in 3837 patients after myocardial infarction. A 24 hour ambulatory ECG was obtained before therapy in 3290 patients 2 to 21 days after myocardial infarction. Sensitivity, specificity, positive and negative predictive values, and prevalence were calculated for four definitions of ventricular arrhythmia with either total or sudden death (death in less than 1 hour of observed symptoms) as an endpoint. These indexes were obtained using the first 1, 2, 4, 6, 12, and 24 hours plus a random hour, a random daytime hour, and a random nighttime hour of the 24-hour ECG of 1336 placebo patients. For both total death and sudden death, as the duration of monitoring increased, (1) prevalence increased, (2) sensitivity increased, (3) specificity decreased, (4) positive predictive value either changed very little or decreased, and (5) negative predictive value was high (greater than 90%) and increased slightly. None of the 3 random hours offered anything beyond the first hour. The Beta-Blocker Heart Attack Trial data, which were based on an average follow-up of 25 months, show that as the number of hours of ambulatory monitoring increase, the percentages of patients identified at risk or not at risk (the positive and negative predictive values) do not change much. Twenty-four hours of monitoring does not appear to be the optimal time duration for deciding whether to treat arrhythmias in patients after infarction.
Comparison of monocyte and alveolar macrophage antibody-dependent cellular cytotoxicity and Fc-receptor activity.

Abstract The cytotoxic potential of rabbit peripheral blood monocytes and alveolar macrophages in antibody-dependent cellular cytotoxicity (ADCC) toward both erythrocyte (RBCox) and tumor cell (CEM T-lymphoblast) targets was examined. ADCC was measured in a 4-hr 51Cr-release assay. Alveolar macrophages were more efficient at killing the tumor cell targets (optimally sensitized with rabbit antisera) than monocytes at similar effector cell/target cell ( E T ) ratios. Tumor cell targets sensitized with seven different antisera (anti-CEM) were lysed by alveolar macrophages but not by the monocytes. In marked contrast, the monocytes were more effective at lysing the sensitized erythrocyte target cells. The degree of cytolysis of RBCox and CEM was dependent on the E T ratio and the degree of sensitization of these target cells. It was demonstrated that the effector cell selectivity in ADCC was directly related to their ability or inability to bind the sensitized target cells as determined by Fc-receptor rosette formation. The transition from monocyte to macrophage may, therefore, have resulted in an alteration in the criteria necessary for Fc-receptor binding to antibody-sensitized target cells and subsequent ADCC.
Pyroelectric Effect in Bone and Tendon

INVESTIGATIONS have recently been made into the generation of electric potentials in bone subjected to mechanical stress1–5. Shamos, Lavine and Shamos5 and Fukada and Yasuda3 have suggested that the potentials are the result of a piezoelectric effect in the collagen of the bone. Fukada and Yasuda have also found a piezoelectric effect in the collagen of the Achilles tendons of a horse and a cow4. Other workers1,2 have suggested that the electric potentials in bone may be generated either by the bending of mucopolysaccharide molecules such as hyaluronic acid or by stress at the interface between collagen and hydroxyapatite. The polar crystal structure of the collagen molecule means that it could exhibit a pyroelectric effect as well as piezoelectricity. We have therefore investigated the existence and magnitude of the pyroelectric effect, and tried to find the origin of the electric potentials in stressed bone.
A non-D-space with large extent

Abstract We proved that ⋄ + implies the existence of a non-D-space whose all closed subspace F satisfies e ( F ) = L ( F ) . The existence of such a space under MA + ¬ CH or PFA is also discussed.
Gravity Powered Locomotion and Active Control of Three Mass System

This paper presents the latest results of our research effort to develop a family of energetically efficient robotic locomotors and introduce new gait patterns for them. We study a chain of mechanisms that span from the very simple to the progressively more complicated. These mechanisms can be as simple as a bouncing ball or as complex as a five link biped. This paper presents the results of our study for a three mass dynamical system. We show that this system can generate a rich set of passive gaits such as hopping, tapping, walking. We developed a nonlinear robust controller for the hybrid dynamics of three mass system that is insensitive to parameter variations of the system. The active control scheme generates the passive gaits on arbitrary ground slope angles.Copyright © 2010 by ASME
Social Support, Home/Work Stress, and Burnout: Who can Help?:

This study considered the nature of home/work stress and investigated the role of social support from both intra- and extraorganizational sources in reducing that stress and buffering its impact on burnout. Specifically, demographic factors affecting perceptions of home/work stress and the impact of various sources of social support were examined. Data were collected from nursing-home nurses and analyzed using regression techniques. Results suggested that participants with children and those cohabiting with their partners were particularly vulnerable to home/work stress. Results also indicated that different sources of social support worked in unique ways to relieve the strain of home/work stress. Implications of this research for theory on social support are considered, along with the pragmatic suggestions for using study results in dealing with home/work stress.
Behaviors emitted by rats with limbic lesions during feeding.

Spontaneous behavior was monitored during a short feeding session in male and female rats with lesions of either the hippocampus or amygdala. Behavior was time-sampled every 10 sec for 10 min daily for 8 days. Male rats with hippocampal lesions reared less frequently but showed elevated levels of drinking and locomotion compared to control males. Female rats with hippocampal lesions were similar to controls along all measures. Amygdala lesions were without effect in rats of either sex. It was concluded that the hippocampal lesion interacts with sex in affecting spontaneous behavior.
Role of amino acids and their Maillard mixtures with ribose in the biosilicification process

Mode of preservation of organic materials on early Earth, Mars or other extraterrestrial objects, and during the space transport on objects such as meteors, is one of the NASA's interests. This is especially true for the bio-organic materials, which could indicate life, past or present. Finding of such materials preserved in some ancient rocks, for example, could be interpreted as a biosignature. We have developed an experimental model for silicification, in which we have synthesized silica gels by reacting sodium silicate solution with various amino acids and with their mixtures with sugars, so-called Maillard mixtures. Our results indicate that these organic materials cause rapid and massive polymerization of silica. Such process may encrust organics or small organisms and thus preserve them. We have studied the gels we synthesized by the infrared (IR) spectroscopic method, and have detected small amount of the organic material in the silica gel. The gels were distinct in each case and have aged differently. In some cases, gel-sol-gel transformations were observed, which may be important for transport of both gels and the organics under prebiotic conditions. The gels obtained from the Maillard mixtures differ from those from the amino acids. Deuteration of the gels was performed in an attempt to resolve the bands in the Si-O-Si and Si-O-C region.
High-density symmetry energy and direct Urca process

The symmetry energy of nucleonic matter is usually assumed to be quadratic in the isospin density. While this may be justified at subsaturation densities, there is no need to enforce this restriction at supersaturation densities. The presence of a quartic term can strongly modify the critical density for the direct Urca process which leads to faster cooling of neutron stars. Neutron star cooling predictions which lie below the observational data can, for some equations of state, be repaired with a quartic term which effectively turns off the direct Urca process.
Unifying the ITS department through ticketing

In 2008, the University of San Diego's ITS department tracked the work they did in over a dozen different ticketing projects. Learn how we unified our ticketing system and ultimately unified our problem solving and change management process. Learn how we gathered input and buy-in along the way, the headaches we felt and the tasks we had to juggle. Two years later, how is the unification working? Have we seen changes in ITS because of this process?
Cutaneous angiosarcoma of the distal extremity

A case of childhood cutaneous angiosarcoma is presented to emphasize the importance of accurate histological diagnosis in lymphovascular malformations that behave atypically and to review the natural history, aetiology, and differential diagnosis of this condition.
High-Density Equation of State for Helium and Its Application to Bubbles in Solids

Helium, produced by transmutations or injected, causes bubble formation in solids at elevated temperatures. For small bubbles, the gas pressure required to balance the surface tension reaches values which far exceed thoseobtainable in experiments to measure the equation of state for helium gas. Therefore, empirical gas laws cannot be considered applicable to the fluid-like densities existing in small bubbles. In order to remedy this situation, an equation of state for helium was developed from the theory of the liquid state. At very low densities, this theoretically derived equation of state agrees with experimental results. For high densities, however, gas pressures are predicted which are significantly higher than those derived from the ideal gas law, but also significantly lower than pressures obtained with the van der Waals law. When applied to equilibrium bubbles in solids, it is found that the high-density equation of state leads to less bubble swelling than the van der Waals law, but more than the ideal gas law. Furthermore, the number of helium atoms in equilibrium bubbles is nearly independent of temperature.
Just noticeable differences forglottal flow waveform characteristics

Summary This study was primarily motivated by the need to establish the correspondence between auditory abilities and laryngeal function. Just noticeable differences (JNDs) were obtained for the open quotient and speed quotient of the glottal flow waveform. The quotients were synthesized for both the glottal flow alone, and for the output pressure signal after the glottal flow signal was applied to the synthesis vocal tract for the vowel /a/. Six adult men and five adult women, all teachers of singing, participated as listeners. An adaptive auditory listening procedure was used to estimate JNDs for the four types of stimuli. The group average JND values were as follows. For the standard open quotient value of .6000, JND = 0.0264 (SD = .010) for the glottal flow and JND = 0.0344 (SD = .020) for the output pressure. For the open quotient, there was no statistically significant difference between genders or between the types of signals. For the standard speed quotient value of 2.000, JND = 0.154 (SD = .043) for the glottal flow and JND = 0.319 (SD = .167) for the output pressure. For the speed quotient, there was no statistically significant difference between genders, but the difference between types of stimulus (glottal flow versus output pressure) was significant (p
The Freedom of a Teenager: Vocation and Service Learning as the Future of Youth Ministry

: This article asserts the value of service learning as integral to youth ministry's future. However, service learning often lacks an appropriate philosophical foundation and an effectual process. Therefore, we offer Luther's doctrine of vocation as a framework for engaging youth in service experiences, which in return becomes a concrete way to experience the doctrine of vocation and, more importantly, the freedom of a Christian. Framed and interpreted through a vocational lens, service experiences aid youth in recognizing the urgency of a life of faith,
Sternal osteomyelitis caused by Aspergillus fumigatus following cardiac surgery: Case and review

Postsurgical sternal wound infection is a serious post-operative complication of cardiac surgery. Aspergillus infection of the sternum is extremely rare. We describe a case of sternal infection due to Aspergillus in an immunocompetent patient following aortic valve replacement.
The identification of transport parameters from truncated physiological tracer curves.

The primary data curves from the injection of tracers into the circulation are often obscured by the appearance of a recirculation hump. Previous techniques for parameter identification in the presence of such a complication have been extended from compartmental models to include circulatory models consisting of partial differential equations of the Taylor dispersion and Turner capacitance types. A comparative analysis of the efficiency of parameter identification by several computational strategies is presented.
An industrial pollution emission control model

A mathematical model for controlling the generation of industrial pollution in a given economic system is presented. For each sector of the economy, the model determines the appropriate technologies that provide for pollutant levels not exceeding some specified range. Given specific pollution emission information, the model provides an information system for analyzing industrial pollution problems. An algorithm for solving the problem is also provided.
Noxious mechanical stimulation evokes the segmental release of opioid peptides that induce μ-opioid receptor internalization in the presence of peptidase inhibitors

The internalization of mu-opioid receptors (MORs) provides an ideal way to locate areas of opioid peptide release. We used this method to study opioid release in the spinal cord evoked by noxious stimuli in anesthetized rats. Previous studies have shown that opioids released in the spinal cord produce MOR internalization only when they are protected from peptidase degradation. Accordingly, rats were implanted with chronic intrathecal catheters that were used to inject a mixture of peptidase inhibitors (amastatin, captopril and phosphoramidon) onto the lumbar spinal cord. Five minutes later, a noxious stimulus was delivered to the paw. Lumbar spinal segments were double-stained with antibodies against MORs and neurokinin 1 receptors (NK1Rs) using immunofluorescence. Mechanical stimulation of the hindpaw consisted of repeated 10 s clamps with a hemostat for 10 min. In the ipsilateral dorsal horn, the stimulus produced abundant NK1R internalization in segments L3-L6, and a more modest but significant MOR internalization in segments L5 and L6. In the contralateral dorsal horn, NK1R was substantially lower and MOR internalization was negligible. The same mechanical stimulus applied to a forepaw did not produce NK1R or MOR internalization in the lumbar spinal cord. Thermal stimulation consisted of immersing a hindpaw in water at 52 degrees C for 2 min. It produced substantial NK1R internalization ipsilaterally in segment L6, but no MOR internalization. These results show that mechanical stimulation induces segmental opioid release, i.e., in the dorsal horn receiving the noxious signals and not in other spinal segments.
Collecting Workers' Perceptions of Performance Obstacles in Outpatient Surgery

The aim of this study was to gather information from staff of outpatient surgery centers concerning their perception of the patient safety/quality of care issues at their Center and the performance obstacles they face when doing their work. In addition we wished to determine whether performance obstacles research (Brown & Mitchell, 1988; Peters et al, 1985) can be applied to the conceptual framework that serves as the basis for all of our patient safety research (Smith & Carayon, 1989, 1995; Carayon & Smith, 2000).We distributed open-ended surveys to all health care providers in five local outpatient surgery centers. Based on previous work conducted in the area of performance obstacles (Brown & Mitchell, 1988; Peters, et al, 1985) we asked the caregivers to identify instances when they felt their performance was challenged or below par, as well as instances when they were able to perform their job very well. Because the population we surveyed is not familiar with the totality of the work system model as d...
RADIOGENIC ARGON AND STRONTIUM DIFFUSION PARAMETERS IN BIOTITE AT LOW TEMPERATURES OBTAINED FROM ALPINE FAULT UPLIFT IN NEW ZEALAND

Abstract Rapid uplift along the Alpine Fault zone in New Zealand has exposed ancient mica schists which are estimated to have been at depths up to 9000 ft prior to the fault displacement, on the assumption that the smooth surface represented by the present, flat topped, peak elevations is truly representative of the mature Pliocene surface prior to uplift and glaciation. K-Ar age measurements on the micas show losses of radiogenic argon that vary with depth of burial up to almost complete loss from biotite at a depth of 9000 ft. The mean value of the diffusion parameter ( D a 2 ) calculated is 6 × 10−16 sec−1 at an estimated temperature of 110°C. This value is much higher than expected but is compatible with effectively complete retention of argon at surface temperatures, and with measured diffusion losses at high temperatures, if in the relationship D a 2 = ( D 0 a 2 ) exp (- E RT ) D 0 a 2 = 1 sec −1 and E = 27 Kcals/mole. A single Rb-Sr analysis on one of the low argon biotite samples showed an almost equal loss of radiogenic Sr87.
Vowel harmony in Manchu: a critical overview

The history of generative accounts of vowel harmony in Classical Manchu is discouraging. The early treatments (Vago, 1973; Odden, 1978; Finer, 1979) assumed the wrong type of vowel harmony (front vs. back rather than relative height harmony). Hayata (1980) proposed the correct type, but was unable to justify it adequately within the generative framework. These shortcomings are due to deficiencies in the practice of generative phonologists. To demonstrate the correct type of vowel harmony in Classical Manchu requires considerations of (1) the actual surface representation and/or (2) facts in related dialects and languages. Neither type of evidence is frequently used in the practice of generative phonologists, although the former is almost always valued in theory. An implication is that attempts to improve phonology must weigh practice as well as theory.
Duplex-derived valve closure times fail to correlate with reflux flow volumes in patients with chronic venous insufficiency

The best way to quantitate venous reflux is still a matter of debate. Duplex-derived valve closure times (VCTs) have been used recently because they can be measured easily. We examined the relationships between VCT and duplex-obtained quantitation of venous volume and between VCT and air plethysmography (APG). Sixty-nine legs in 45 patients with varying clinical degrees of chronic venous insufficiency were studied by duplex scan and APG. VCTs were compared with duplex-derived flow calculations and with APG-derived venous filling index and residual volume fraction. The patients' mean age was 47.5±13.9 years; the mean duration of their symptoms was 13±4 years. Twenty percent had a history of deep venous thrombosis, and 29% had undergone venous surgery. No correlation was found between VCT and flow volume or between VCT and flow at peak reflux at any of the anatomic locations studied: saphenofemoral junction, greater saphenous vein, lesser saphenous vein, superficial femoral vein, profunda femoris vein, and popliteal vein. Likewise, no correlation was found between total VCT and APG-derived venous filling index or between total flow volumes and APG-derived residual volume fraction. Total VCT and total flow volumes did, however, have a moderate correlation ( r =0.65; p =0.0003). Duplex-derived VCTs, although extremely useful in determining the presence of reflux, do not correlate with the magnitude of reflux, and should not be used to quantitate the degree of reflux.
Penfluridol: An open phase III study in acute newly admitted hospitalized schizophrenic patients

An open study was carried out in 17 acutely ill, newly admitted, floridly psychotic schizophrenic patients to a city hospital in New York. Penfluridol was given on a daily basis up to doses of 120 mg and patients were rated objectively by means of different psychometric evaluations; vital signs were monitored daily as were side effects. The drug was found to be a rapid acting, well-tolerated, and highly effective antipsychotic agent within the population of patients explored and within the dose range used. It was particularly effective in acutely agitated floridly paranoid schizophrenics; a statistically significant impact was achieved by 7 days and usually within 72 h after initiating treatment. The drug appears unique in that (1) its effects are realized without the untoward and usually trouble-some effects of nonspecific sedation attendant upon the use of many other ‘neuroleptic’ medications, and (2) even within the relatively high doses used it produces no hypotensive effects. It is concluded that this appears to be a unique antipsychotic agent and a potentially important addition to the treatment armamentarium of both acute and chronic schizophrenic individuals.
Restricted diffusion model for surface diffusion in reversed-phase liquid chromatography

The analysis of experimental results in reversed-phase liquid chromatography (RPLC) allows further discussion of the restricted diffusion model of surface diffusion formulated on the basis of the absolute rate theory. Chromatographic data were acquired on different RPLC systems with two series of homologous compounds, several stationary phases having different alkyl ligand densities and ligands of various lengths, and methanol/water mobile phases of different compositions. The enthalpy−entropy compensation observed and the linear free energy relationships found for surface diffusion suggest that the surface diffusion mechanism remains probably the same in all RPLC conditions studied. Whereas the isosteric heat of adsorption approaches zero with decreasing retention, the activation energy of surface diffusion tends toward a finite limit and the surface diffusion coefficient tends toward a value near the corresponding molecular diffusivity. These results support the validity of the restricted diffusion mode...
Overreporting And Electoral Participation Research

Do nonvoters who say they voted bias electoral participation research? Early studies said they do not, but Bernstein, Chadha, and Montjoy concluded that overreporters alter the effects of most independent variables. This research tests whether overreporters bias conclusions about additional untested variables and whether we obtain the same results as Bernstein and his coauthors when we test different models. Overreporters bias the coefficients of only a small proportion of independent variables in more typical models, although overreporting is more problematic than the early studies reported. Specifically, in the models this research tests, overreporters change the effects of African American race, marital status, Southern residence, and closing date on presidential election turnout and African American race, marital status, Hispanic ethnicity, occupation, and open seat races on midterm turnout. A warning about how overreporting bias affects, or may affect, their conclusions should accompany studies that ...
Monthly Simulation of Surface Layer Fluxes and Soil Properties during FIFE

Abstract Global change and regional climate experiments with atmospheric numerical models rely on the parameterization of the surface boundary in order to evaluate impact on society and agriculture. In this paper, several surface modeling strategies have been examined in order to test their ability to simulate for a period of one month, and hence, their impact on short-term and regional climate modeling. The interaction between vegetation and soil models is also discussed. The resolution of a multiple-level soil model, the method of computing moisture availability, the Force–Restore Method, and vegetation parameterization were studied by comparing model-simulated soil temperature, soil moisture, and surface energy budget with observations and intercomparison of the simulations. The increase of model soil resolution improved both the simulation of daytime ground heat flux and latent heat. Evaporation from the soil surface with more coarse resolution soil was larger than the higher resolution simulation, bu...
Social Movement Organization Leaders and the Creation of Markets for “Local” Goods:

Research illustrates that social movements can fuel new markets and that these markets can create social change, but the role of leaders in this process is less understood. This exploratory intervi...
Generalization of low pressure, gas-liquid, metastable sound speed to high pressures

A theory is developed for isentropic metastable sound propagation in high pressure gas-liquid mixtures. Without simplification, it also correctly predicts the minimum speed for low pressure air-water measurements where other authors are forced to postulate isothermal propagation. This is accomplished by a mixture heat capacity ratio which automatically adjusts from its single phase values to approximately the isothermal value of unity needed for the minimum speed. Computations are made for the pure components parahydrogen and nitrogen, with emphasis on the latter. With simplifying assumptions, the theory reduces to a well known approximate formula limited to low pressure.
Transabdominal operative visualization of the mucosal surface of the large bowel.

Abstract A new instrument for the examination of the mucosal surface of the bowel is described. It presents experimental evidence that large areas may be explored for the detection of lesions that would not be revealed by conventional methods of examination, such as barium enema X-ray studies.
Identification of Cultigen Amaranth and Chenopod from Rock-Shelter Sites in Northwest Arkansas

The cultigen Amaranthus hypochondriacus has been recognized in four samples of desiccated plant remains from Holman Shelter in Madison County, Arkansas. That site, excavated in 1932, yielded the domesticated Chenopodium berlandieri ssp. nuttalliae described by Hugh Wilson (1981). Cultigen chenopod has been found in one other Madison County rockshelter. Samples containing the two species are described in detail and placed in general cultural context by combining information from excavation notes with regional archaeological data. Mesoamerican origins would exclude both cultigens from the Eastern Agricultural Complex. Current evidence favors a late prehistoric introduction into the eastern United States, but determination of spatial and temporal ranges will depend upon future recovery and analysis.
Activation of Stat3 by cell confluence reveals negative regulation of Stat3 by cdk2

The signal transducing protein Stat3 activates gene transcription in cells in response to multiple cytokines. Constitutive activation of Stat3 has been observed in solid tumors including head and neck squamous cell carcinoma. Stat3 activation in cancer has been associated with autocrine stimulatory loops and is believed to convey a growth advantage to cells. We now demonstrate ligand-independent activation of Stat3 by high cell density in multiple cancer cell lines. Activation of Stat3 is associated with antiproliferative rather than proliferative conditions. Interference with cdk2 activity upregulates Stat3 phosphorylation and Stat3-directed DNA-binding activity. Our data supports a model in which Stat3 activity is partially suppressed by cdk2 in growing cells and derepressed upon cell confluence.
PROSTATE CANCER DETECTION ON URINALYSIS FOR α METHYLACYL COENZYME A RACEMASE PROTEIN

ABSTRACTPurpose: We assessed the feasibility of a novel urinary test for prostate cancer based on the presence of α methylacyl coenzyme A racemase (AMACR) protein in voided urine specimens obtained after prostate biopsy.Materials and Methods: Clean catch voided urine specimens were prospectively collected from 26 consecutive men immediately after transrectal ultrasound guided prostate biopsy for suspected malignancy. The presence of AMACR was evaluated in a blinded manner by Western blot analysis and correlated with biopsy results and patient clinical information.Results: AMACR was detected in the urine in 18 of 26 patients (69%). AMACR was detected in all 12 patients with biopsy confirmed adenocarcinoma of the prostate (100% sensitivity, 95% CI 75 to 100), in 5 of 12 with no evidence of cancer on biopsy (58% specificity, 95% CI 29 to 78) and in 1 of 2 (50%, 95% CI 3 to 80) with atypia on biopsy. Overall AMACR detection was associated with cancer status by prostate biopsy in 21 of 26 patients (86%).Conclu...
Intraspecific genetic variation of Batrachospermum gelatinosum (Batrachospermales, Rhodophyta) in eastern North America

Abstract House D.L., Vandenbroek A.M. and Vis M.L. 2010. Intraspecific genetic variation of Batrachospermum gelatinosum (Batrachospermales, Rhodophyta) in eastern North America. Phycologia 49: 501–507. DOI: 10.2216/09-104.1 Batrachospermum gelatinosum is a widespread taxon of freshwater red algae in eastern North America and elsewhere in the northern hemisphere. A total of 193 individuals from 16 stream segments in eastern North America ranging from Alabama in the south to Nova Scotia in the north, as well as three individuals from Europe were collected. Genetic variation among these individuals was assessed using the cox1 barcoding region. Five haplotypes were revealed from the North American specimens with a single widespread haplotype representing most individuals. Of the other four haplotypes, three were collected exclusively in Alabama and one in Massachusetts. These five haplotypes only differed by 1–4 bp. There were two haplotypes detected in the European samples, which differed from the North Amer...
Postoperative pulmonary complications in the geriatric age group.

ABSTRACT: Postoperative pulmonary complications are a serious danger to any patient who undergoes surgery. The increase in geriatric surgery has brought into focus certain marginal factors that can spell the difference between success and failure. In a series of 300 elderly patients who underwent major surgery at the Henry Ford Hospital, there were 34 in whom clinical and radiologic evidence of atelectasis developed. In 19 others, x-ray examination of the chest showed various infiltrates suggesting pneumonitis, and sputum cultures grew coliform bacteria. Despite appropriate treatment, 5 patients died from postoperative pulmonary complications. Illustrative cases of hypoventilation, atelectasis, pneumonia and pneumothorax are presented. Recommendations are made for the care of the elderly undergoing major surgery, including the preoperative identification of chronic lung disease, determination of the respiratory reserve, preoperative exercises in deep breathing and coughing for use after operation, adequate oxygenation during the surgical procedure, close supervision of postoperative respiratory ventilation for the first seventy-two hours, selective use of mechanical respiratory assistance, and emphasis on early ambulation.
Newsvendor model of capacity sharing

Capacity sharing in the form of roaming agreements have long been a fixture of cellular service. Historically, the main driver behind roaming agreements is to extend the coverage of a wireless carrier’s network into regions where that carrier has no infrastructure, thus making the service more attractive to customers who “roam” into a new region. Here we focus on a different form of capacity sharing, namely acquiring “overflow” capacity from another provider during periods of high demand. Such sharing may provide carriers with an attractive means to better meet their rapidly increasing bandwidth demands. On the other hand, the presence of such a sharing agreement could encourage providers to under-invest in their networks, resulting in poorer performance. We consider a stylized model of such a situation to gain insight into these trade-offs. Specifically, we adapt the newsvendor model from operation management [8] to this situation. The newsvendor model applies to a single firm that is determining how much inventory to stock in the face of uncertain demand. Here, we consider two wireless carriers, who are determining how much capacity to invest in, also in the face of uncertain demand. Without any capacity sharing, this reduces to the standard newsvendor model for each carrier. However, with sharing, the carriers’s investment decisions become coupled since the revenue one carrier earns form sharing capacity with another depends on the other’s capacity investment. We model this interaction as a game and give conditions for when the game has a unique pure strategy Nash equilibrium. Our analysis applies for two different sharing models one in which a carrier first serves its own customers before allocating an excess capacity to the other provider’s customers and one in which carriers do not discriminate between their own traffic and the other carrier’s. Numerical comparisons of the resulting equilibria are also given for different demand distributions. In terms of related work, there has been a line of literature studying how carriers set prices in roaming agreements (see e.g. [4]). Much of this work focuses on a known demand and
Reflection of X-Rays from Condensed Metal Films*†

The results of a series of measurements on the x-ray reflectivity of metal films evaporated on a glass substrate are presented. Comparison of these results with theory is made and the necessity of making measurements on bulk material is pointed out if the disagreements with theory are to be eliminated.
Physical Chemistry of Airborne Sea Salt Particles and Their Components

The potential for generation of highly reactive chlorine and bromine atoms from sea salt particles in the troposphere has been recognized for many years. This chemistry is of particular interest because of the complex interactions of halogen atoms with ozone as well as with organics, which can lead to either the formation or destruction of tropospheric ozone, depending on the conditions. While a variety of reactions of tropospherically important gases with sea salt and its major components, NaCl and NaBr, have been identified, the chemical and physical interactions are not well understood on a molecular scale. As a result, quantification of the contribution of sea salt chemistry to the marine boundary layer, as well as in other circumstances where such chemistry may be important, is not yet possible. We discuss here research from the authors' laboratories which is directed to understanding the chemistry of sea salt, NaCl, and NaBr on a molecular level in sufficient detail to provide a firm basis for incor...
Coparenting Conflict and Parenting Behavior in Economically Disadvantaged Single Parent African American Families: The Role of Maternal Psychological Distress

Substantial research has focused on the negative associations between coparenting conflict, parental psychological functioning, and parenting behavior in European American, middle-income, families. However, less attention has been given to ethnic minority families and to families that are nontraditionally structured. In an effort to address this gap, the current longitudinal study examines the relation between conflict with the mother-identified primary co-caregiver and parenting practices in single parent, economically disadvantaged African American families. Participants included 234 mother–child dyads. It was hypothesized that conflict would relate to less utilization of positive parenting practices and that this association would be mediated, at least in part, by maternal psychological distress. Hypotheses were examined using structural equation modeling (Lisrel 8.3): Conflict with a co-caregiver was significantly related to parenting both directly and indirectly through maternal psychological distress. Implications of the findings are discussed.