Ad Hoc Determination of Geographic Regions for Concept@Location Queries

2009 ◽  
pp. 169-194 ◽  
Author(s):  
Andreas Henrich ◽  
Volker Lüdecke
Keyword(s):  
Ad Hoc ◽  
Concept Location ◽  
Geographic Regions

Determination of the Discharge Coefficient of a Thin-Walled Orifice Used in Hydrostatic Bearings

2005 ◽  
Vol 127 (3) ◽  
pp. 679-684 ◽  
Author(s):  
S. Charles ◽  
O. Bonneau ◽  
J. Fre^ne
Keyword(s):  
Discharge Coefficient ◽  
Ad Hoc ◽  
Thrust Bearing ◽  
Accurate Estimation ◽  
Hydrostatic Bearing ◽  
Hydrostatic Bearings ◽  
Flow Through ◽  
Thin Walled ◽  
Experimental Bench

The characteristics of hydrostatic bearings can be influenced by the compensating device they use, for example, a thin-walled orifice (diaphragm). The flow through the orifice is given by a law where an ad hoc discharge coefficient appears, and, in order to guarantee the characteristics of the hydrostatic bearing, this coefficient must be calibrated. The aim of this work is to provide an accurate estimation of the discharge coefficient under specific conditions. Therefore an experimental bench was designed and a numerical model was carried out. The results obtained then by the experimental and theoretical approach were compared with the values given by the literature. Finally, the influence of the discharge coefficient on the behavior of a thrust bearing is examined.

1. An Ad Hoc Navy

2018 ◽  
pp. 1-11
Author(s):  
Craig L. Symonds
Keyword(s):  
United States ◽  
New York ◽  
Ad Hoc ◽  
The United States ◽  
Revolutionary War ◽  
Royal Navy ◽  
Supply Line

‘An ad hoc navy: the Revolutionary War (1775–1783)’ describes the Patriots’ response to the British Royal Navy strongholds in Boston and New York and the role of armed vessels during the Revolutionary War. It begins with George Washington’s attempts to threaten the British supply line using boats. The Continental Navy was founded on October 13, 1775, but the new program could hardly challenge the Royal Navy. With the exception of John Paul Jones, the Continental Navy proved mostly disappointing. The United States won its independence largely because the determination of the Patriot forces outlasted the British willingness to fight—and to pay for—a war three thousand miles away.

scholarly journals Improved retrieval of nitrogen dioxide (NO<sub>2</sub>) column densities by means of MKIV Brewer spectrophotometers

2014 ◽  
Vol 7 (11) ◽  
pp. 4009-4022 ◽  
Author(s):  
H. Diémoz ◽  
A. M. Siani ◽  
A. Redondas ◽  
V. Savastiouk ◽  
C. T. McElroy ◽  
...  
Keyword(s):  
Nitrogen Dioxide ◽  
Ad Hoc ◽  
Absorption Spectrometry ◽  
Atmospheric Composition ◽  
Data Sets ◽  
Data Set ◽  
Noise Interference ◽  
Atmospheric Species ◽  
Mass Factor

Abstract. A new algorithm to retrieve nitrogen dioxide (NO2) column densities using MKIV ("Mark IV") Brewer spectrophotometers is described. The method includes several improvements, such as a more recent spectroscopic data set, the reduction of measurement noise, interference by other atmospheric species and instrumental settings, and a better determination of the zenith sky air mass factor. The technique was tested during an ad hoc calibration campaign at the high-altitude site of Izaña (Tenerife, Spain) and the results of the direct sun and zenith sky geometries were compared to those obtained by two reference instruments from the Network for the Detection of Atmospheric Composition Change (NDACC): a Fourier Transform Infrared Radiometer (FTIR) and an advanced visible spectrograph (RASAS-II) based on the differential optical absorption spectrometry (DOAS) technique. To determine the extraterrestrial constant, an easily implementable extension of the standard Langley technique for very clean sites without tropospheric NO2 was developed which takes into account the daytime linear drift of stratospheric nitrogen dioxide due to photochemistry. The measurement uncertainty was thoroughly determined by using a Monte Carlo technique. Poisson noise and wavelength misalignments were found to be the most influential contributors to the overall uncertainty, and possible solutions are proposed for future improvements. The new algorithm is backward-compatible, thus allowing for the reprocessing of historical data sets.

VP144 Health Technology Assessment In Hospitals: Determinants Of Performance

2017 ◽  
Vol 33 (S1) ◽  
pp. 215-215
Author(s):  
Lucrezia Ferrario ◽  
Emanuela Foglia ◽  
Roberta Pagani ◽  
Emanuele Lettieri ◽  
Elisabetta Garagiola ◽  
...  
Keyword(s):  
Health Technology Assessment ◽  
Team Performance ◽  
Technology Assessment ◽  
Organizational Support ◽  
Ad Hoc ◽  
Scientific Evidence ◽  
Health Technology ◽  
Management Board ◽  
Design Options

INTRODUCTION:While “how to perform” a rigorous Health Technology Assessment (HTA) at the institutional level is well established (1), very little has been experienced for empirically approaching an HTA in hospitals: no scientific evidence is available concerning the correct organizational model, to maximise and to improve the functioning, the performance and the effectiveness of the HTA units (2).This study aims at crystallizing those design options that may positively contribute to the HTA units’ effectiveness (quality) and/or to the efficiency (timely) (3).METHODS:After the collection of qualitative data from ninety-five healthcare professionals by means of ad hoc questionnaires and interviews, a hierarchical sequential linear regression model was conducted to verify the existence of HTA units determinants. Size, multidisciplinary, trust among members, HTA previous skills and organizational support were the variables investigated, determining team performance.RESULTS:A greater size and the presence of different specialities within the working unit positively influenced effectiveness, even if they spent more time to complete the assessment. Trust, previous HTA skills and organizational support played a key role in team performance. Size and previous HTA skills most explained the variance of team effectiveness (R2 = .317; Adjusted R2 = .249). The five investigated variables presented a higher explanatory nature regarding team efficiency (R2 = .246; Adjusted R2 = .165).CONCLUSIONS:The study suggested the creation of multi-dimensional and multi-disciplinary HTA units to increase their effectiveness. HTA units should be monitored by the hospital management board, because an excessive increase in multi-disciplinary and size could determine inefficiency. Trust within members and the attendance of HTA training course improve performance. According to these results, the study gave solutions both to the scholars of HTA and to hospitals strategic management boards, paving the way to the determination of a more efficient and effective HTA units composition.

Legislation on Foreign Investments and Practice of Investment Dispute Resolution

2016 ◽  
Vol 4 (4) ◽  
pp. 0-0
Author(s):  
Stanislav Borodkin
Keyword(s):  
Foreign Investment ◽  
Ad Hoc ◽  
Foreign Investments ◽  
Sovereign Immunity ◽  
Investment Activity ◽  
International Treaty ◽  
National Courts ◽  
Doing Business ◽  
Definition Of

Russian companies doing business outside of the Russian Federation require special protection of their rights and lawful interests. Several methods of protecting foreign investor rights are available under the international law, including national courts and tribunals and commercial arbitrations (both institutionary and ad-hoc). International Center for Settlement of Investment Disputes is a special institution established to resolve the controversies related to foreign investments. It was created under an international treaty and its decisions are not subject to sovereign immunity. The article considers ICSID practice regarding the definition of an investment, since disputes are related to an investment activity, which is a topical question when dealing with the determination of the Center competence. While the analyzed cases do not have the power of binding precedents, when the arbiters elaborate on the definition of a foreign investment they use specific criteria that could be relevant for the national law. Since international practice has a more specific definition of foreign investments than the Russian law, the author suggests that the former be taken into consideration when a foreign investment is defined in Russian legal texts. It could ensure better protection of the rights of Russian legal entities abroad.

scholarly journals AGENT: the Arabidopsis Gene Regulatory Network Tool for Exploring and Analyzing GRNs

2021 ◽  
Author(s):  
Vincent Lau ◽  
Rachel Woo ◽  
Bruno Pereira ◽  
Asher Pasha ◽  
Eddi Esteban ◽  
...  
Keyword(s):  
Gene Regulatory Networks ◽  
Gene Network ◽  
Regulatory Networks ◽  
Target Genes ◽  
Ad Hoc ◽  
Arabidopsis Gene ◽  
Nitrate Signaling ◽  
Multi Level ◽  
Gene Regulatory

AbstractGene regulatory networks (GRNs) are complex networks that capture multi-level regulatory events between one or more regulatory macromolecules, such as transcription factors (TFs), and their target genes. Advancements in screening technologies such as enhanced yeast-one-hybrid screens have allowed for high throughput determination of GRNs. However, visualization of GRNs in Arabidopsis has been limited to ad hoc networks and are not interactive. Here, we describe the Arabidopsis GEne Network Tool (AGENT) that houses curated GRNs and provides tools to visualize and explore them. AGENT features include expression overlays, subnetwork motif scanning, and network analysis. We show how to use AGENT’s multiple built-in tools to identify key genes that are involved in flowering and seed development along with identifying temporal multi-TF control of a key transporter in nitrate signaling. AGENT can be accessed at https://bar.utoronto.ca/AGENT.

scholarly journals Stitching of sensor-navigated 3D ultrasound datasets for the determination of large thyroid volumes – a phantom study

2018 ◽  
Vol 20 (4) ◽  
pp. 480 ◽  
Author(s):  
Martin Freesmeyer ◽  
Leonard Knichel ◽  
Christian Kuehnel ◽  
Thomas Winkens
Keyword(s):  
Ad Hoc ◽  
Clinical Performance ◽  
Three Dimensional ◽  
Thyroid Volume ◽  
Correlation Coefficients ◽  
3D Ultrasound ◽  
Volumetric Analysis ◽  
High Level ◽  
Clinical Equipment

Aims: Thyroid volume has to be measured in goiters prior to radioiodine treatment to calculate the needed amount of radioactivity. Modern clinical equipment for ultrasonography shows the trend to smaller probes, so that larger goiters do not fit any longer into the probe’s field of view. This study evaluated the feasibility and accuracy of stitching procedures applied to thyroid volumetric analysis performed using three-dimensional ultrasound (3D-US).Material and methods: Ad hoc thyroid phantoms of different shapes (regular, nodular, thickened isthmus) and volumes (ranging between 50 and 400 mL) were developed. In 15 such phantoms the left and right lobes were separately scanned, and the 3D-US datasets were then assembled (stitched) using predefined landmarks and dedicated software. Volumetric analysis was then assessed via a conventional ellipsoid model (em) and manual tracing (mt). The correlation of measured and reference volumes was determined using Pearson’s correlation coefficients and Bland and Altman limits of agreement.Results: The results showed a high level of agreement (with correlation coefficients ranging from 0.974 to 0.999) for all shapes and volumes tested, including the largest volume of 400 mL. The mt method, although more time consuming, proved superior to the em.Conclusions: Stitching-mediated thyroid volumetric analysis is accurate, and its clinical performance should be investigated in future studies

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