698 research outputs found

    Nurse Practitioners\u27 Attitudes Toward Substance Abuse

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    Substance abuse is a major health problem in the United States today. The prevalence of the problem in primary health care settings mandates examination of the nurse practitioner\u27s attitudes toward substance abuse. Research has demonstrated that the attitude of the health care provider toward the substance abuser can affect the level and quality of care rendered. This descriptive study was designed to examine the attitudes of nurse practitioners certified and practicing in Mississippi. Pender\u27s revised Health Promotion Model was utilized as the theoretical framework for the study. The research question asked in this study was : What are the attitudes of nurse practitioners toward substance abuse? A sample of 98 Family, Adult, Gerontological, Pediatric, and Obstetric/Gynecology nurse practitioners registered with the Mississippi Board of Nursing was surveyed using the Brief Substance Abuse Attitude Survey. A demographic and clinical practice questionnaire was also utilized. Descriptive statistics were generated to describe the nurse practitioners\u27 attitudes toward substance abuse. Responses to the instrument and questionnaire were analyzed using frequency distributions and percentages. Varying attitudes toward substance abuse were revealed in this study. A recommendation for practice drawn from the study was, as the incidence of substance abuse continues to escalate, nurse practitioners should evaluate self attitudes and beliefs to determine what factors might have been of influence in shaping their own attitudes. Further research is recommended to determine the effect of a substance abuse educational program on attitudes. A qualitative study examining the practitioners\u27 attitudes through face-to-face interviews and journals is also recommended

    The role of Lucha Libre in the construction of Mexican male identity

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    Lucha Libre has played an important role in Mexican culture since the late 1950s. The sport became famous mainly due to its masked wrestlers, who incorporated their own family traditions, beliefs and fears into the design of their masks, transforming an ordinary person into a fearless character

    Optically Induced Reorientation in Nematic Cylindrical Structures

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    Cyclindrical structures of nematics give rise to several opto-optical effects related to molecular reorientation. One of these effects is the formation of diffraction ring patterns similar to the ones observed in planar cells, but differing in shape. Another effect has been observed, namely a quasi-chaotic motion of rings with a very large angular spread; this motion can be obtained using a cw laser and high power densities. The phenomenon could be attributed to thermal motion, however, there are some features that cannot be explained by a purely thermal effect, e.g., a wavelength dependence of the threshold and the frequencies of the ring motion

    Tangible User Interfaces as a Pathway for Information Visualisation for Low Digital Literacy in the Digital Humanities

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    Information visualisation has become a key element for empowering users to answer and produce new questions, make sense and create narratives about specific sets of information. Current technologies , such as Linked Data, have changed how researchers and professionals in the Humanities and the Heritage sector engage with information. Digital literacy is of concern in many sectors, but is especially of concern for Digital Humanities. This is due to the fact that the Humanities and Heritage sector face an important division based on digital literacy that produce gaps in the way research can be carried out. One way to overcome the challenge of digital literacy and improve access to information can be Tangible User Interfaces (TUIs), which allow a more meaningful and natural pathway for a wide range of users. TUIs make use of physical objects to interact with the computer. In particular, they can facilitate the interaction process between the user and a data visualisation system. This position paper discusses the opportunity to engage with Digital Humanities information via TUIs and data visualisation tools, offering new ways to analyse, investigate and interpret the past

    Electrohydrodynamic behavior in twisted-wedge nematic structures

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    A new type of domain for nematic liquid crystals with a twisted-wedge structure is presented. This new type of domain appears from the low frequency range to 10 kHz. This behavior was observed for square and pulsed excitations. The liquid crystal was N-(p-methoxybenzylidene)-p'-butylaniline) (MBBA) used at room temperature. These domains offer a higher degree of complexity than conventional Williams domains. The corresponding stability chart is presented

    Impact of Surface Treatment on the Corrosion Resistance of ASTM F138-F139 Stainless Steel for Biomedical Applications

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    AbstractAISI 316 LVM stainless steel type considered in ASTM F138 and F139 standards for implant devices is widely used, in particular for orthopedic surgery, because it combines good biofunctionality and acceptable biocompatibility at low costs. Adequate interaction of these materials with the human body and its capability to reach the desired service level are determined by the surface preparation. The goal of the present work is to relate the surface roughness parameters with the localized corrosion resistance of AISI 316 LVM stainless steel grit blasted for different times and passivated with nitric acid. At intermediate blasting times the roughness parameters attain an extreme value and this surface condition corresponds with the maximum pitting corrosion resistance

    Modular multilevel matrix converter as solid state transformer for medium and high voltage substations

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    The use of power converters as solid state transformer is an attractive solution to modernize the power network, but this solution has not been fully addressed for MV and HV substations. This paper presents a customized and simple control for the Modular Multilevel Matrix Converter (M3C), specially conceived for its operation on synchronous ports, which is the case of AC substations. The control allows to transfer bidirectional active power, generate/absorb reactive power and provide ancillary services. The converter is compared to the back-to-back Modular Multilevel Converter (B2B-MMC) where the key performance indicators to carry out the comparison are power efficiency, number of semiconductor devices, passive components required, footprint, voltage cell balance, fault blocking capability and stress of components. The simulation results show the features, performance and attractiveness of the M3C topology in a 33/11 kV, 16 MW substation under different operating conditions, including grid faults and dynamic operation. The M3C presents similar efficiency and performance than the B2B-MMC, but it uses less semiconductor devices, passive components and total cell capacitor energy than the B2B-MMC, reducing cost and footprint. The experimental results show the performance of the M3C under less ideal conditions including a substation transformer saturation and power step response

    Non-linear dynamical analysis of resting tremor for demand-driven deep brain stimulation.

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    Parkinson's Disease (PD) is currently the second most common neurodegenerative disease. One of the most characteristic symptoms of PD is resting tremor. Local Field Potentials (LFPs) have been widely studied to investigate deviations from the typical patterns of healthy brain activity. However, the inherent dynamics of the Sub-Thalamic Nucleus (STN) LFPs and their spatiotemporal dynamics have not been well characterized. In this work, we study the non-linear dynamical behaviour of STN-LFPs of Parkinsonian patients using ε -recurrence networks. RNs are a non-linear analysis tool that encodes the geometric information of the underlying system, which can be characterised (for example, using graph theoretical measures) to extract information on the geometric properties of the attractor. Results show that the activity of the STN becomes more non-linear during the tremor episodes and that ε -recurrence network analysis is a suitable method to distinguish the transitions between movement conditions, anticipating the onset of the tremor, with the potential for application in a demand-driven deep brain stimulation system

    Discards of the trawl and long line Spanish fleets in ICES Subarea VII in 1994

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    Within the framework of a European Union (UE) contract and with voluntary participation of commercial fishing vessels, a discard sampling programme based on stratified random sampling by fisheries covered the activities of trawl and long line Spanish fleets fishing in ICES Subarea VII in 1994. Discards of commercial and non-commercial species, including species of pinnipeds, cetaceans, sea turtles and sea birds, caught incidentally were estimated in kg per fishing hour by ICES rectangle and depth stratum in 1994. The sampling programme was carried out by observers on board commercial fishing vessels during normal fishing activity. A total of 238 species caught by trawlers and 76 by long liners were determined. The comparison of the two fleets regarding their ratios of discards in 1994 shows that the larger percentages of discards relative to total catches are found in the trawl fisheries (48%) and around 50% are primarily due to the discards of three species of fish and one of crustacea. Seasonal variation in the case of discards of the two main species (Great Silver Smelt and Horse Mackerei) was observed. The depth at which discards were hig lies between 200 and 400m. Conversely, long line fishing in Subarea VII shows a lower discard rate than that of trawlers (10%). Approximately 60% of discards primarily comprise two species of fish, Blue Whiting and Great Silver Smelt, both of which show the highest discard value per f.h. in the 3rd quarter. No differences were observed by depth strata

    Recovery of two specimens of anglerfish Lophius piscatorius Linnaeus, 1758 in the northern stock (ICES Divisions VIII a and b) after being tagged in the southern stock (Division VIII c)

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    The present paper provides a first report on the recovery of two specimens of anglerfish Lophius piscatorius Linnaeus, 1758, both of which had been tagged in ICES Division VIII c (southern stock of anglerfish) and where recovered in Divisions VIII a and b (northern stock). The first of these recoveries, tagged on 22 October 1996 in the Cantabrian Sea waters off the coast of Fuenterrabía (Spain), took place on 10 January 1997 off the coast of Biscarrose (France). In the 80 days from tagging to recovery, its length had increased by 3 cm and it had travelled approximately 109 km. The other specimen was tagged on 20 December 1995 in the Cantabrian Sea waters off the coast of Santander (Spain) and recovered at the beginning of March 1997 off the coast of La Rochelle (France). During these 440 days, the fish travelled approximately 292 km.En este trabajo se notifica por primera vez la recuperación de dos ejemplares marcados de rape Lophius piscatorius Linnaeus, 1758. Ambos ejemplares fueron marcados en la división VIII c del CIEM (stock sur de rape) y capturados de nuevo en las divisiones VIII a y b (stock norte). El primer ejemplar fue marcado el día 22 de octubre de 1996 en aguas del mar Cantábrico, frente a la costa de Fuenterrabía (España), y recuperado el 10 de enero de 1997 frente a las costas de Biscarrose (Francia). Su talla aumentó 3 cm y se desplazó aproximadamente109 km desde el lugar de marcado, tras pasar 80 días en libertad. El segundo ejemplar fue marcado el 20 de diciembre de 1995 en aguas del mar Cantábrico, frente a la costa de Santander (España), y recuperado a primeros de marzo de 1997 frente a las costas de La Rochelle (Francia). Se desplazó aproximadamente292 km desde el lugar de marcado, tras pasar aproximadamente 440 días en libertad.Instituto Español de Oceanografí
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