Bodkin Design & Engineering (United States)

We conducted a systematic review to assess if any condition before- or after simulation-based training of teamwork competencies for healthcare professionals affects learning or transfer of skills to the clinical environment.We searched CINAHL, Medline, and Embase for studies published between January 1, 2011, and July 10, 2023. We screened 13,149 abstracts and 335 full texts, of which 5 studies were included. We included primary studies with and without a comparator published in English. We assessed risk of bias using the ROBINS-I tool before narrative synthesis. All studies were observational and reported heterogeneous conditions such as posters, coaching, and leadership support initiatives. Very low certainty evidence suggested that implementing conditions in the clinical environment such as coaching, wider communication of learning objectives, or leadership initiatives could be considered to facilitate the transfer of skill to the clinical environment. Funding: Society for Simulation in Healthcare. Prospero registration: CRD42022320721.

A multiplexed, slit-scanning hyperspectral imager with spatial resolution of 320x240 pixels and spectral resolution of 20 nm over 8 to 12.5 microns has been developed. The system can acquire hyperspectral images at 3 Hz.

There is a need for a Precision Radiometric Surface Temperature (PRST) measurement capability that can achieve noncontact profiling of a sample’s surface temperature when heated dynamically during laser processing, aerothermal heating or metal cutting/machining. Target surface temperature maps within and near the heated spot provide critical quantitative diagnostic data for laser-target coupling effectiveness and laser damage assessment. In the case of metal cutting, this type of measurement provides information on plastic deformation in the primary shear zone where the cutting tool is in contact with the workpiece. The challenge in these cases is to measure the temperature of a target while its surface’s temperature and emissivity are changing rapidly and with incomplete knowledge of how the emissivity and surface texture (scattering) changes with temperature. Bodkin Design and Engineering, LLC (BDandE), with partners Spectral Sciences, Inc. (SSI) and Space Computer Corporation (SCC), has developed a PRST Sensor that is based on a hyperspectral MWIR imager spanning the wavelength range 2-5 μm and providing a hyperspectral datacube of 20-24 wavelengths at 60 Hz frame rate or faster. This imager is integrated with software and algorithms to extract surface temperature from radiometric measurements over the range from ambient to 2000K with a precision of 20K, even without a priori knowledge of the target’s emissivity and even as the target emissivity may be changing with time and temperature. In this paper, we will present a description of the PRST system as well as laser heating test results which show the PRST system mapping target surface temperatures in the range 600-2600K on a variety of materials.

Hypothalamic gonadotropin releasing-hormone neurons integrate the multiple internal and external cues that regulate sexual reproduction. In contrast to other neurons which exhibit extensive dendritic arbors, GnRH neurons usually have a single dendrite with relatively little branching. This largely precludes the integration strategy where a single dendritic branch serves as a unit of integration. In the present study, we identify a gradient in L-type calcium channels in dendrites of mouse GnRH neurons and its interaction with GABAergic and glutamatergic inputs. Higher levels of L-type calcium channels are in somata/proximal dendrites (i.e. 0–26 μm) and distal dendrites (~130 μm dendrite length) but intervening mid-lengths of dendrite (~27–130 μm) have reduced L-type calcium channels. Using uncaging of GABA, there is a decreasing GABAergic influence along the dendrite and the impact of GABA-A receptors is dependent on activation of L-type calcium channels. This results in amplification of proximal GABAergic signals and attenuation of distal dendritic signals. Most interestingly, the intervening dendritic regions create a filter through which only relatively high amplitude, low frequency GABAergic signaling to dendrites elicits action potentials. The findings of the present study suggest that GnRH dendrites adopt an integration strategy whereby segments of single non-branching GnRH dendrites create functional microdomains and thus serve as units of integration.

This chapter divides two major sections: the study of chemical mechanisms utilizing the direct observation of O via O-nuclear magnetic resonance (NMR), and the study of bioorganic problems via direct observation of O via O-NMR. An overview of each contribution, in terms of the methodology and rationale of the application of each paper to the advancement of the use of O-NMR in the area of study, along with some insight into the mechanistic problem under study, has been given. Fiat and co-workers have extended their studies from the area of investigating hydrogen bonding in amides, peptides, urea, etc. to the area of hydrogen bonding in nucleic acids. The authors believe that the large chemical shift range of O and the sensitivity of O to hydrogen bonding makes O-NMR an attractive tool in the study of the interaction of various small oxygen-containing molecules and DNA which, of course, is made of various oxygen-containing and hydrogen-bond-forming het-erocyclic bases.

I. Background a. ARCO Experience as a GOM Jack-up User ARCO Oil and Gas Company (ARCO) has operated jack-ups in the Gulf of Mexico (GOM) extensively over the last three decades. During this period, ARCO has drilled several hundred wells accumulating significant experience with a variety of different jack-ups. In 1980, ARCO initiated a structural study to assess the risk of using jack-ups adjacent to fixed platforms. While the study was ongoing, a jack-up rig drilling an exploratory well for ARCO was destroyed during Hurricane Allen, further increasing interest in the subject. In the Spring of 1985, a work group of drilling, geotechnical, and marine engineers was assembled to review GOM jack-up operations and identify areas for improvement. As part of this effort, ARCO funded a compilation of GOM soil strength data, a key factor in jack-up design. The group also worked closely with a rig designer-builder to prepare a preliminary design for a new generation jack-up for GOM operations. The purpose of this paper is to present some of the observations made as a result of this general operating experience and these detailed engineering studies. It is hoped that by promoting more discussion on GOM jack-up designs that the industry (rig designers and builders, drilling contractors, and petroleum operators) will begin design work toward the next generation GOM jack-up. b. Areas for Possible Improvement Two areas were studied in detail: Operating Efficiency and Structural Integrity. Evaluation of operating efficiency reveals relationships between rig designs and final operating costs. For example, drilling records show the cost of certain rig design limitations on drilling operations. Also, by reviewing new technology and benefits from its use, estimates can be made for drilling improvements from advanced rig capabilities. Evaluation of structural integrity reveals the risk associated with failure of the unit during severe environmental loading. In the GOM, hurricanes are the environmental conditions of concern. Challenges exist both in accurately quantifying these storm conditions and consistently applying them to different offshore structures, i.e. MODU-A vs. MODU-B, MODU vs. a fixed platform. c. GOH Focus but Global Concept This paper is focused towards GOM operations since it is a dominant petroleum region warranting specialized rig designs. The concept of an operations-based decision perspective for rig design applies globally however. II. Profile of Present Fleet a. Calendar and Technical Age A survey of GOM jack-ups showed average rig age is 8 years, and only 7 of 185 rigs have been built in the last 3 years. With a useful average jack-up life of 12-15 years, there may be a shortage of good rigs in the near future. More important than calendar age is the "technical age" of the rigs. Although difficult to quantify exactly, the design, contracting, and construction process for jack-ups results in at least 2 to 3 years of lag time between technology and rig completion. For example, an 8 calendar year old rig, will be designed with technology that is 10 or 11 years old. This lag time on technology makes the above age distribution of great concern.

An integrated geoscience study was performed at the eight platform locations that comprise the Tactical Aircrew Training Range (TACTS) located in the Atlantic Ocean offshore Georgia. The investigation included a geophysical survey and geotechnical borings with in situ testing at each platform location. A new type of in situ testing system, the Dolphin system, was first used on this project. The data was interpreted by integrating the geotechnical and geophysical data to develop a geologic model of the site. The geologic model was used to evaluate geologic constraints on site development as well as design procedure applicability to the project location. The foundation analyses focused on three alternatives; pile supported structures, gravity structures, and semisubmersible buoys.

Studies were made to investigate efficiencies of pile groups under lateral loading. The loading was in one direction at slow displacement rates approaching static conditions. The test piles were 25.4-mm (1-in.) diameter tubes open-ended, with penetrations of two, four, six, or eight diameters. Tests were made on single piles and on three- and five-pile groups with clear spacings of 0.5, 1, 2, 3, and 5 diameters in side-by-side or in-line arrangements. The tests were run in a very soft clay with a moisture content of 59% and a shear strength of 2 kPa (42 psf). Summaries are given of efficiencies of 20 combinations of pile numbers, penetrations, arrangements, and clear spacings. Efficiencies are given for individual piles in a pile group as well as for the entire group. Distances from the soil surface to the load resultant on individual piles and to the load resultant on the total group are also given.

Using the results of eight field load tests reported in the literature, the ultimate lateral load for rigid shafts in clay is defined as the load corre sponding to a shaft rotation of 2 degrees. Th...