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Journal articles on the topic 'Vertical and Statistically Analysing'

Author: Grafiati

Published: 11 September 2023

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1

Karis, Tomas, Mats Berg, and Sebastian Stichel. "Analysing the correlation between vehicle responses and track irregularities using dynamic simulations and measurements." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 234, no. 2 (2019): 170–82. http://dx.doi.org/10.1177/0954409719840450.

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Track irregularities play a key role in vehicle response, but it is not uncommon to find irregularities with similar statistical characteristics giving very different vehicle behaviour. It is therefore important to find a consistent way of describing track irregularities, which better matches the vehicle behaviour to facilitate an efficient track maintenance and vehicle acceptance testing. Various proposals have been made to resolve this issue, although with limited success. In the present paper, a methodology to break down the track–vehicle interaction into steps, by analysing the irregularit

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Guerrini, A., G. Romano, C. Leardini, and M. Martini. "Measuring the efficiency of wastewater services through Data Envelopment Analysis." Water Science and Technology 71, no. 12 (2015): 1845–51. http://dx.doi.org/10.2166/wst.2015.169.

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Efficient water management is a priority in the European Union, since the operational efficiency of many water utilities is very low compared to best practice. Several countries are restructuring the water industry to save costs. Larger-scale operations and vertical integration are promoted to achieve scale and scope economies; however, the literature is not unanimous that such economies exist. There is also little evidence of the effect of customer density on costs. This article offers some insights into this matter, analysing the Danish water industry by a two-stage Data Envelopment Analysis

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Alcalde, Juan, Clare E. Bond, Gareth Johnson, et al. "Fault interpretation in seismic reflection data: an experiment analysing the impact of conceptual model anchoring and vertical exaggeration." Solid Earth 10, no. 5 (2019): 1651–62. http://dx.doi.org/10.5194/se-10-1651-2019.

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Abstract. The use of conceptual models is essential in the interpretation of reflection seismic data. It allows interpreters to make geological sense of seismic data, which carries inherent uncertainty. However, conceptual models can create powerful anchors that prevent interpreters from reassessing and adapting their interpretations as part of the interpretation process, which can subsequently lead to flawed or erroneous outcomes. It is therefore critical to understand how conceptual models are generated and applied to reduce unwanted effects in interpretation results. Here we have tested how

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Al-Dajani, Mahmoud, Anas O. Abouonq, Turki A. Almohammadi, Mohammed K. Alruwaili, Rayan O. Alswilem, and Ibrahim A. Alzoubi. "A Cohort Study of the Patterns of Third Molar Impaction in Panoramic Radiographs in Saudi Population." Open Dentistry Journal 11, no. 1 (2017): 648–60. http://dx.doi.org/10.2174/1874210601711010648.

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Objectives: To evaluate the epidemiological patterns of third molar impaction in a cohort of patients living in the north of Saudi Arabia. Materials and Methods: A retrospective cohort study comprised of analysing 2550 Orthopantomograms (OPGs) belonging to patients who attended Aljouf University College of Dentistry between September 2013 and December 2015. OPGs were examined to determine the frequency of third molar impaction, their levels of eruption and angulations. Mixed effects logistic regression analysis was performed to calculate adjusted odds ratios. Data were weighted by age and sex

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Braesicke, P., C. Brühl, M. Dameris, et al. "A model intercomparison analysing the link between ozone and geopotential height anomalies in January." Atmospheric Chemistry and Physics Discussions 7, no. 6 (2007): 15409–51. http://dx.doi.org/10.5194/acpd-7-15409-2007.

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Abstract. A statistical framework to evaluate the performance of chemistry-climate models with respect to the interaction between meteorology and ozone during northern hemisphere mid-winter, in particularly January, is used. Different statistical diagnostics from four chemistry-climate models (E39C, ME4C, UMUCAM, ULAQ) are compared with the ERA-40 re-analysis. First, we analyse vertical coherence in geopotential height anomalies as described by linear correlations between two different pressure levels (30 and 200 hPa) of the atmosphere. In addition, linear correlations between (partial) column

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Bian, Longlong, Jianwei Chen, Mukesh Soni, Jyoti Bhola, Harish Kumar, and Malik Jawarneh. "Research on computer 3D image encryption processing based on the nonlinear algorithm." Nonlinear Engineering 11, no. 1 (2022): 664–71. http://dx.doi.org/10.1515/nleng-2022-0232.

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Abstract This article uses the nonlinear digital chaos theory algorithm to generate the corresponding encryption system initial parameters, by analysing the correlation degree of image elements from the angles of horizontal, vertical, and diagonal direction, in order to study computer three-dimensional (3D) image encryption processing. The correlation degree of the cypher text obtained by the nonlinear algorithm is weak in the image's adjacent pixels, and the adjacent pixels are not related at all, horizontal angle: 0.915989, vertical angle: 0.968184, diagonal angle: 0.913533. The nonlinear al

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Stefanović, Natalija, Ivana Ćirić, Snežana Pavlović, et al. "Evaluation of Some Anatomical and Anthropometric Characteristics of the Chest Based on the Analysis of Digital Images of the Anterior Aspect of Trunk in Top Athletes." Acta Facultatis Medicae Naissensis 29, no. 1 (2012): 43–51. http://dx.doi.org/10.2478/v10283-012-0007-5.

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Evaluation of Some Anatomical and Anthropometric Characteristics of the Chest Based on the Analysis of Digital Images of the Anterior Aspect of Trunk in Top Athletes The aim of this research was to assess the size and shape of the chest in students and top athletes. The research involved 23 first-year students of the Faculty of Sport and Physical Education, and 23 top athletes of the Athletic Federation of Serbia. The digital images of the frontal trunk aspect were made and further analyzed in ImageJ program. The vertical and horizontal distances and as well as the angles were determined: the

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Braesicke, P., C. Brühl, M. Dameris, et al. "A model intercomparison analysing the link between column ozone and geopotential height anomalies in January." Atmospheric Chemistry and Physics 8, no. 9 (2008): 2519–35. http://dx.doi.org/10.5194/acp-8-2519-2008.

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Abstract. A statistical framework to evaluate the performance of chemistry-climate models with respect to the interaction between meteorology and column ozone during northern hemisphere mid-winter, in particularly January, is used. Different statistical diagnostics from four chemistry-climate models (E39C, ME4C, UMUCAM, ULAQ) are compared with the ERA-40 re-analysis. First, we analyse vertical coherence in geopotential height anomalies as described by linear correlations between two different pressure levels (30 and 200 hPa) of the atmosphere. In addition, linear correlations between column oz

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Dižo, J., M. Blatnický, O. Kravchenko, V. Mamrai, D. Barta, and P. Gasper. "Simulation of a vehicle movement on a roadway with stochastic irregularities prescribed by the power spectral density." IOP Conference Series: Materials Science and Engineering 1199, no. 1 (2021): 012070. http://dx.doi.org/10.1088/1757-899x/1199/1/012070.

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Abstract A vehicle represents a mechanical system, which consists of bodies interconnected by joints, force elements, constraints and other coupling elements. When a vehicle moves on a roadway, it is excited due to roadway surface irregularities. It results to vibration of the vehicle mainly in the vertical direction. These vertical movements are known as a vertical dynamics of vehicles. The level of vibrations characterized by their frequency and amplitudes considerably effects two main phenomena, i.e. driving safety and ride comfort for passengers. Therefore, it is necessary to investigate a

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Bi, H., W. Zheng, Q. Lei, and J. Zeng. "RECONSTRUCTION OF THE SLIP DISTRIBUTION ALONG THE WEST HELANSHAN FAULT, NORTHERN CHINA BASED ON HIGH-RESOLUTION TOPOGRAPHY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B2-2020 (August 12, 2020): 1025–31. http://dx.doi.org/10.5194/isprs-archives-xliii-b2-2020-1025-2020.

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Abstract. The increasing wealthy of high-resolution topography allows for remotely measuring and analysing offset features and their associated surface slip distributions at a very high resolution and along a significant length of a fault, hence providing important insights into many aspects of the fault behaviour. The West Helanshan Fault is a Holocene active fault located at the junction of the Tibetan Plateau, Alashan, and Ordos blocks. Despite its special tectonic location, it has rarely been studied before. In this study, a 2-m-resolution DEM of the West Helanshan Fault was built from the

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Mahdi, Hussein Alwan. "Monitoring of the Vertical Settlement In Heavy Structures By Precise Levelling." Journal of Engineering 19, no. 9 (2023): 1169–87. http://dx.doi.org/10.31026/j.eng.2013.09.10.

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Monitoring and analysing of the vertical deformations or the settlements of the structures is one of the main research fields in geodetic applications, which is considered a precise periodic measurement, made at different epochs to investigate these deformations on heavy structures.In this research, the deformation measurements were carried out on one of Baghdad University buildings,” Building of Computers Department” of dimensions (70.0 * 81.3 m.). Due to some cracks observed in their walls, it was necessary to monitor the vertical displacement of this building at some particular monitoring p

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STELLMACH, S., A. TRAXLER, P. GARAUD, N. BRUMMELL, and T. RADKO. "Dynamics of fingering convection. Part 2 The formation of thermohaline staircases." Journal of Fluid Mechanics 677 (May 4, 2011): 554–71. http://dx.doi.org/10.1017/jfm.2011.99.

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Regions of the ocean's thermocline unstable to salt fingering are often observed to host thermohaline staircases, stacks of deep well-mixed convective layers separated by thin stably stratified interfaces. Decades after their discovery, however, their origin remains controversial. In this paper we use three-dimensional direct numerical simulations to shed light on the problem. We study the evolution of an analogous double-diffusive system, starting from an initial statistically homogeneous fingering state, and find that it spontaneously transforms into a layered state. By analysing our results

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Tahir, H., and A. H. M. Din. "VERTICAL ACCURACY ASSESSMENT FOR OPEN-SOURCE DIGITAL ELEVATION MODEL: A CASE STUDY OF BASRAH CITY, IRAQ." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-4/W6-2022 (February 7, 2023): 355–61. http://dx.doi.org/10.5194/isprs-archives-xlviii-4-w6-2022-355-2023.

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Abstract. In the diverse domains of earth observation, elevation data are essential for a wide range of applications with various technical requirements and use cases. The Advanced Spaceborne Thermal Emission and Reflection Radiometer-Global Digital Elevation Model (ASTER GDEM), Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010), Shuttle Radar Topography Mission (SRTM), and other projects have made a large number of global Digital Elevation Model (DEM) datasets for environmental modelling and studies freely available. Global DEMs have undergone an accuracy review to measure their

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Münch, Thomas, Sepp Kipfstuhl, Johannes Freitag, Hanno Meyer, and Thomas Laepple. "Regional climate signal vs. local noise: a two-dimensional view of water isotopes in Antarctic firn at Kohnen Station, Dronning Maud Land." Climate of the Past 12, no. 7 (2016): 1565–81. http://dx.doi.org/10.5194/cp-12-1565-2016.

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Abstract. In low-accumulation regions, the reliability of δ18O-derived temperature signals from ice cores within the Holocene is unclear, primarily due to the small climate changes relative to the intrinsic noise of the isotopic signal. In order to learn about the representativity of single ice cores and to optimise future ice-core-based climate reconstructions, we studied the stable-water isotope composition of firn at Kohnen Station, Dronning Maud Land, Antarctica. Analysing δ18O in two 50 m long snow trenches allowed us to create an unprecedented, two-dimensional image characterising the is

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Chomiak, Lilianna. "Variation of lignite ash in vertical and horizontal sections of mining wallsin the Konin Lignite Mine, central Poland." Geology, Geophysics and Environment 46, no. 1 (2020): 17. http://dx.doi.org/10.7494/geol.2020.46.1.17.

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This paper focuses on the variations of lignite ash along selected sections and mining walls from three lignite opencast mines in central Poland. They are owned by the Konin Lignite Mine, where the first Mid-Polish lignite seam is being mined to produce electricity. Ash content in lignite is important because ash lowers the calorific value of the lignite. The results obtained are based on 266 samples of lignite collected from the Drzewce, Tomisławice, and Jóźwin IIB opencasts. All samples were tested according to ISO 1171 standard procedures, that is, they were first burned at a temperature of

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Laine, M., N. Latva-Pukkila, and E. Kyrölä. "Analysing time-varying trends in stratospheric ozone time series using the state space approach." Atmospheric Chemistry and Physics 14, no. 18 (2014): 9707–25. http://dx.doi.org/10.5194/acp-14-9707-2014.

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Abstract. We describe a hierarchical statistical state space model for ozone profile time series. The time series are from satellite measurements by the Stratospheric Aerosol and Gas Experiment (SAGE) II and the Global Ozone Monitoring by Occultation of Stars (GOMOS) instruments spanning the years 1984–2011. Vertical ozone profiles were linearly interpolated on an altitude grid with 1 km resolution covering 20–60 km. Monthly averages were calculated for each altitude level and 10° wide latitude bins between 60° S and 60° N. In the analysis, mean densities are studied separately for the 25–35,

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Berchet, A., I. Pison, F. Chevallier, et al. "Towards better error statistics for atmospheric inversions of methane surface fluxes." Atmospheric Chemistry and Physics 13, no. 14 (2013): 7115–32. http://dx.doi.org/10.5194/acp-13-7115-2013.

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Abstract. We adapt general statistical methods to estimate the optimal error covariance matrices in a regional inversion system inferring methane surface emissions from atmospheric concentrations. Using a minimal set of physical hypotheses on the patterns of errors, we compute a guess of the error statistics that is optimal in regard to objective statistical criteria for the specific inversion system. With this very general approach applied to a real-data case, we recover sources of errors in the observations and in the prior state of the system that are consistent with expert knowledge while

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Siddiqui, Tanveer Ahmed, Aisha Shujat, Shabir Ahmed Jagirani, Zaheer Hussain Chachar, Fozia Rajput, and Madiha Khalid Memon. "An Examination of the Impact of Blue Heat Treatment on the Forced Caused by the Vertical Motion of Endodontic Files." Pakistan Journal of Medical and Health Sciences 17, no. 3 (2023): 319–22. http://dx.doi.org/10.53350/pjmhs2023173319.

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Objective: To assess the vertical forces produced during canal shaping by the Reciproc Blue (RB) and Reciproc (R) systems. Place and Duration: In the Operative Dentistry Department, Altamash Institute of Dental Medicine Karachi for one-year duration from January 2022 to December 2022. Methods: A total of 32 maxillary premolar teeth were selected, each with two distinct constricted and straight canals. Every tooth was positioned in a standing position on a platform attached to a force analysing device after access cavity preparation (M5-20 Advanced Digital Force Gauge; Mark-10 Corporation, NY,

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Alshimmeri, Ahmad Jabbar Hussain, Esraa Kamal Jaafar, Lina Abdulsalam Shihab, Hadi Naser Ghadhban Al-Maliki, Ali Al-Balhawi, and Binsheng Zhang. "Structural Efficiency of Non-Prismatic Hollow Reinforced Concrete Beams Retrofitted with CFRP Sheets." Buildings 12, no. 2 (2022): 109. http://dx.doi.org/10.3390/buildings12020109.

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Non-prismatic reinforced concrete (RC) beams are widely used for various practical purposes, including enhancing architectural aesthetics and increasing the overall thickness in the support area above the column, which gives high assurance to services that this will not result in the distortion of construction features and can reduce heights. The hollow sections (recess) can also be used for the maintenance of large structural sections and the safe passage of utility lines of water, gas, telecommunications, electricity, etc. They are generally used in large and complex civil engineering works

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Silina, A. S., E. V. Liperovskaya, V. A. Liperovsky, and C. V. Meister. "Ionospheric phenomena before strong earthquakes." Natural Hazards and Earth System Sciences 1, no. 3 (2001): 113–18. http://dx.doi.org/10.5194/nhess-1-113-2001.

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Abstract. A statistical analysis of several ionospheric parameters before earthquakes with magnitude M > 5.5 located less than 500 km from an ionospheric vertical sounding station is performed. Ionospheric effects preceding "deep" (depth h > 33 km) and "crust" (h < 33 km) earthquakes were analysed separately. Data of nighttime measurements of the critical frequencies foF2 and foEs, the frequency fbEs and Es-spread at the middle latitude station Dushanbe were used. The frequencies foF2 and fbEs are proportional to the square root of the ionization density at heights of 300 km and 100 k

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Sofi, Muhammad Hafizuddin, Noor Hafiza Harun, Anis Haryati Mansor, Zaki Yamani Zakaria, and Mazura Jusoh. "Progressive Freeze Concentration Performance Prediction based on Polynomial Curve Model for Star Fruit Juice Concentration." Malaysian Journal of Fundamental and Applied Sciences 18, no. 2 (2022): 245–56. http://dx.doi.org/10.11113/mjfas.v18n2.2386.

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Progressive freeze concentration (PFC) is a simpler freeze concentration process of removing water content in fruit juice through ice crystal formation in order to concentrate a solution. Vertical finned crystallizer (VFC) was used in the PFC system as the ice crystallizer in this study. A mathematical model is highly needed to be developed so that theories can be validated and to understand the system developed better with minimal risk and cost. Mathematical modelling is also essential to analyze the performance of the system. In this work, the use of mathematical model was explored based on

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Beirle, S., U. Platt, M. Wenig, and T. Wagner. "Weekly cycle of NO<sub>2</sub> by GOME measurements: a signature of anthropogenic sources." Atmospheric Chemistry and Physics 3, no. 6 (2003): 2225–32. http://dx.doi.org/10.5194/acp-3-2225-2003.

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Abstract. Nitrogen oxides (NO+NO2=NOx and reservoir species) are important trace gases in the troposphere with impact on human health, atmospheric chemistry and climate. Besides natural sources (lightning, soil emissions) and biomass burning, fossil fuel combustion is estimated to be responsible for about 50% of the total production of NOx. Since human activity in industrialized countries largely follows a seven-day cycle, fossil fuel combustion is expected to be reduced during weekends. This "weekend effect" is well known from local, ground based measurements, but has never been analysed on a

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23

Münch, T., S. Kipfstuhl, J. Freitag, H. Meyer, and T. Laepple. "Regional climate signal vs. local noise: a two-dimensional view of water isotopes in Antarctic firn at Kohnen station, Dronning Maud Land." Climate of the Past Discussions 11, no. 6 (2015): 5605–49. http://dx.doi.org/10.5194/cpd-11-5605-2015.

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Abstract. In low-accumulation regions, the reliability of δ18O-derived temperature signals from ice cores within the Holocene is unclear, primarily due to small Holocene climate changes relative to the intrinsic noise of the isotopic signal. In order to learn about the representativity of single ice cores and to optimise future ice-core-based climate reconstructions, we studied the stable-water isotope composition of firn at Kohnen station, Dronning Maud Land, Antarctica. Analysing δ18O in two 50 m long snow trenches allowed us to create an unprecedented, two-dimensional image characterising t

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Li, Ying, Xiangjun Zhao, Xuejiao Deng, and Jinhui Gao. "The impact of peripheral circulation characteristics of typhoon on sustained ozone episodes over the Pearl River Delta region, China." Atmospheric Chemistry and Physics 22, no. 6 (2022): 3861–73. http://dx.doi.org/10.5194/acp-22-3861-2022.

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Abstract. The peripheral circulation of typhoon forms sustained ozone episodes. However, how it impacts the day-to-day ozone pollution levels during the episodes has not been clearly studied, which is crucial for better prediction of the daily ozone variation. In this study, the analysis of ground observation, wind profile data, and model simulation is integrated. By analysing the wind profile radar observations, we found a weak wind deepening (WWD; vertical depth of the weak winds increased), more correlated with the ground-level ozone variation than surface weak wind. Long-term statistical a

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Lux, Oliver, Christian Lemmerz, Fabian Weiler, et al. "Intercomparison of wind observations from the European Space Agency's Aeolus satellite mission and the ALADIN Airborne Demonstrator." Atmospheric Measurement Techniques 13, no. 4 (2020): 2075–97. http://dx.doi.org/10.5194/amt-13-2075-2020.

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Abstract. Shortly after the successful launch of the European Space Agency's wind mission Aeolus, co-located airborne wind lidar observations were performed in central Europe; these observations employed a prototype of the satellite instrument – the ALADIN (Atmospheric LAser Doppler INstrument) Airborne Demonstrator (A2D). Like the direct-detection Doppler wind lidar on-board Aeolus, the A2D is composed of a frequency-stabilized ultra-violet (UV) laser, a Cassegrain telescope and a dual-channel receiver to measure line-of-sight (LOS) wind speeds by analysing both Mie and Rayleigh backscatter s

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Beirle, S., U. Platt, M. Wenig, and T. Wagner. "Weekly cycle of NO<sub>2</sub> by GOME measurements: A signature of anthropogenic sources." Atmospheric Chemistry and Physics Discussions 3, no. 4 (2003): 3451–67. http://dx.doi.org/10.5194/acpd-3-3451-2003.

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Abstract. Nitrogen oxides (NO+NO2=NOx) are important trace gases in the troposphere with impact on human health, atmospheric chemistry and climate. Besides natural sources (lightning, soil emissions) and biomass burning, fossil fuel combustion is estimated to be responsible for about 50\\% of the total production of NOx. Since human activity in industrialized countries largely follows an artificial seven-day cycle, fossil fuel combustion is expected to be reduced during weekends. This "weekend effect" is well known from local, ground based measurements, but has never been analysed on a global

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Borsellino, Valeria, Francesca Varia, Cinzia Zinnanti, and Emanuele Schimmenti. "The Sicilian cooperative system of wine production." International Journal of Wine Business Research 32, no. 3 (2020): 391–421. http://dx.doi.org/10.1108/ijwbr-10-2018-0062.

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Purpose The purpose of this paper is to verify whether, besides the traditional organisational models mainly implemented by wine-making cooperatives, more modern and hybrid organisational forms can be profitably applied within an increasingly competitive wine market. Design/methodology/approach The study outlined in this paper deployed a mixed method. Specifically, an archived analysis, a survey and a descriptive case study (including visits, interviews and documentary analysis) were the methodological techniques used in this study, which were “in series but integrated” between themselves. In

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Druzhinin, Oleg A., and Wu-Ting Tsai. "Numerical Simulation of Micro-Bubbles Dispersion by Surface Waves." Algorithms 15, no. 4 (2022): 110. http://dx.doi.org/10.3390/a15040110.

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This paper presents an algorithm for numerical modeling of bubble dispersion occurring in the near-surface layer of the upper ocean under the action of non-breaking two-dimensional (2D) surface waves. The algorithm is based on a Eulerian-Lagrangian approach where full, 3D Navier-Stokes equations for the carrier flow induced by a waved water surface are solved in a Eulerian frame, and the trajectories of individual bubbles are simultaneously tracked in a Lagrangian frame, taking into account the impact of the bubbles on the carrier flow. The bubbles diameters are considered in the range from 20

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Sedlak, René, Patrick Hannawald, Carsten Schmidt, Sabine Wüst, and Michael Bittner. "High-resolution observations of small-scale gravity waves and turbulence features in the OH airglow layer." Atmospheric Measurement Techniques 9, no. 12 (2016): 5955–63. http://dx.doi.org/10.5194/amt-9-5955-2016.

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Abstract. A new version of the Fast Airglow Imager (FAIM) for the detection of atmospheric waves in the OH airglow layer has been set up at the German Remote Sensing Data Center (DFD) of the German Aerospace Center (DLR) at Oberpfaffenhofen (48.09° N, 11.28° E), Germany. The spatial resolution of the instrument is 17 m pixel−1 in zenith direction with a field of view (FOV) of 11.1 km × 9.0 km at the OH layer height of ca. 87 km. Since November 2015, the system has been in operation in two different setups (zenith angles 46 and 0°) with a temporal resolution of 2.5 to 2.8 s. In a first case stu

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Karlström, O., A. Wacker, K. Nilsson, et al. "Analysing the capacitance–voltage measurements of vertical wrapped-gated nanowires." Nanotechnology 19, no. 43 (2008): 435201. http://dx.doi.org/10.1088/0957-4484/19/43/435201.

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GALLO TORRES, MARLON, ENEKO MOLA SANZ, IGNACIO MUGURUZA FERNANDEZ DE VALDERRAMA, AITZOL UGARTEMENDIA ITURRIZAR, GONZALO ABAD BIAIN, and DAVID CABEZUELO ROMERO. "STATE OF THE ART OF SMALL WIND ENERGY ANALYSING DIFFERENT CONTROLS." DYNA 97, no. 1 (2022): 11. http://dx.doi.org/10.6036/10376.

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There are two wind turbine topologies according to the axis of rotation: horizontal axis, "Horizontal Axis Wind Turbines" (HAWT) and vertical axis, "Vertical Axis Wind Turbines" (VAWT) [2]. HAWT turbines are used for high power generation as they have a higher energy conversion efficiency [2]. However, VAWTs are used in mini wind applications because they do not need to be oriented to the prevailing wind and have lower installation cost.

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Liu, Chen Xi, Wei Jin, and Jun Jie Liu. "Research on Molten Iron Vertical Flow Rate and Level Based on Dynamic Infrared Radiation and Time Intervals." Applied Mechanics and Materials 128-129 (October 2011): 417–20. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.417.

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In the foundry, it's difficult to measure the level of molten iron in pouring package and the flow of molten iron each pouring during casting control process, which will result in the control problem of over-pouring and under-pouring.So,a new measurement method about molten iron level and dynamic detection of vertical flow rate has been developed in this paper.The method is based on infrared radiation and time intervals under the state of vertical flow rate of molten iron. By analysing the flow rate of molten iron in the casting ladle taphole theoretically, building field experimental device a

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SZYCA, MIKOŁAJ. "ANALYSIS OF THE BMA K2400 VERTICAL CENTRIFUGE TURBINE IN TERMS OF BALANCING AND VIBRATION DIAGNOSTICS." HERALD OF KHMELNYTSKYI NATIONAL UNIVERSITY 297, no. 3 (2021): 71–80. http://dx.doi.org/10.31891/2307-5732-2021-297-3-71-80.

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Physical damage to a material is a diffuse defect in the form of vacancies, microcracks, micro-voids or damaged micro-volumes, which reduce the effective or load-bearing part of the material. Surface fatigue defects, such as deformation and cracks, occur in the bearing during the load transfer. Imbalance is a practical problem in the operation of many rotating machines, causing not only increased vibration of the machine, but also leading to accelerated wear of the rotor bearings. The subject of this work is the analysis of the dynamics of the BMA K2400 centrifuge in terms of the possibility o

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Akman, A., O. Oram, and P. Aydin. "Optic Disc Measurements with the 78 Diopter Lens, Zeiss 4-Mirror Contact Lens and Computerized Image Analysing System." European Journal of Ophthalmology 8, no. 1 (1998): 22–27. http://dx.doi.org/10.1177/112067219800800106.

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We evaluated the 78 diopter (D) lens and Zeiss 4-mirror lens for the measurement of vertical and horizontal optic disc diameters during slit-lamp biomicroscopy and compared the results with the measurements made with the computerized image analysing system (IMAGEnet 640, Topcon, Japan) in 30 eyes of 30 patients. The 78D lens and Zeiss 4-mirror lens measurements both correlated well with the computerized image analysis measurements (r=0.881 for vertical and r=0.895 for horizontal disc diameter measurements with the 78D lens and r=0.883 for vertical and r=0.891 for horizontal disc diameter measu

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Wu, Yu Yin. "Vertical Shaft Impact Crusher Wear Analysis and Research on Antiwear Measures." Applied Mechanics and Materials 155-156 (February 2012): 1066–69. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.1066.

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Analysing the wear characteristics and features of vertical shaft impact crusher in the use of the principles of Tribology. Obtain the wear types and mechanism. Summarizes the factors which impact wear and tear, life and reliability. By selecting appropriate material and structure to optimize two respects its anti-wear measures were studied. Put forward to solve the method of reducing the wear problem.

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Durey, Matthew, and Paul A. Milewski. "Faraday wave–droplet dynamics: discrete-time analysis." Journal of Fluid Mechanics 821 (May 22, 2017): 296–329. http://dx.doi.org/10.1017/jfm.2017.235.

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A droplet may ‘walk’ across the surface of a vertically vibrating bath of the same fluid, due to the propulsive interaction with its wave field. This hydrodynamic pilot-wave system exhibits many dynamics previously believed to exist only in the quantum realm. Starting from first principles, we derive a discrete-time fluid model, whereby the bath–droplet interactions are modelled as instantaneous. By analysing the stability of the fixed points of the system, we explain the dynamics of a walking droplet and capture the quantisations for multiple-droplet interactions. Circular orbits in a harmoni

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Fobbe, Lea. "Analysing Organisational Collaboration Practices for Sustainability." Sustainability 12, no. 6 (2020): 2466. http://dx.doi.org/10.3390/su12062466.

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The complex sustainability challenges that society faces require organisations to engage in collaborative partnerships. Stakeholders affect, and are affected by an organisation’s sustainability activities, making it an important element when deciding with whom to collaborate. A large number of studies have focussed on collaboration for sustainability, especially on vertical and dyadic partnerships and collaborative networks, while there is limited research on overarching collaboration activities from the perspective of individual organisations (for example, the Kyosei approach), and even less

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Celik, Salih, Mevlut Celikoglu, Suleyman K. Buyuk, and A. Ercan Sekerci. "Mandibular vertical asymmetry in adult orthodontic patients with different vertical growth patterns: A cone beam computed tomography study." Angle Orthodontist 86, no. 2 (2015): 271–77. http://dx.doi.org/10.2319/030515-135.1.

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ABSTRACT Objective: To evaluate condylar and ramal vertical asymmetry in adult orthodontic patients with different vertical growth patterns and a clinically normal sagittal skeletal pattern using cone-beam computed tomography (CBCT). Materials and Methods: The study sample consisted of 101 adult orthodontic patients (48 men and 53 women) divided into three groups according to their vertical growth patterns: high- (33 patients; mean age, 25.06 ± 6.05 years), low- (34 patients; mean age, 24.88 ± 5.22 years), and normal-angle (34 patients; mean age, 24.14 ± 4.26 years) groups. Condylar, ramal, co

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Aldridge, David F. "Statistically perturbed geophone array responses." GEOPHYSICS 54, no. 10 (1989): 1306–17. http://dx.doi.org/10.1190/1.1442590.

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Seismic‐receiver arrays implemented under typical field conditions are subject to a variety of perturbing influences. The array responses that are actually achieved differ, perhaps substantially, from the nominal response associated with ideal conditions (precise positioning, vertical plants, identical geophones, perfect ground coupling, etc.). Variations in receiver array response may degrade the effectiveness of multichannel processing and analysis schemes that rely upon channel‐to‐channel waveform constancy. In effect, array‐response variation is a form of noise added to recorded waveforms

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Hernández, Diego. "Drawing the Boundaries Between Hub-and-Spoke Cartels and Vertical Agreements: Lessons from the United Kingdom and the United States to Chilean Competition Law." World Competition 41, Issue 2 (2018): 275–98. http://dx.doi.org/10.54648/woco2018014.

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Indirect contacts or exchanges of information between competitors through a common third party can sometimes lead to the existence of a cumulus of vertical agreements and, sometimes, can imply the configuration of a horizontal agreement. In competition law, vertical and horizontal agreements are treated in very different ways. Therefore, establishing whether a set of facts amounts to one or the other is critical. After analysing the situation in the United Kingdom and in the United States, this presentation will explain why the limit between the hub-and-spoke (horizontal) conspiracies and a me

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Frleta, Daniela. "Analysing off-season tourist expenditure." European Journal of Tourism Research 17 (October 1, 2017): 215–30. http://dx.doi.org/10.54055/ejtr.v17i.304.

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The majority of researches deal with the issue of micro-level expenditure in the high season, leaving off-season expenditure an under-researched topic. Moreover, the relationship between tourist satisfaction and expenditure has been also rarely explored. Thus, the aim of this study is to determine the factors that influence the off-season expenditure levels of light spenders and heavy spenders. Among the set of predictors, various dimensions of satisfaction were tested as possible off-season expenditure predictors. Descriptive analysis was used for sample profiling, independent t-tests were co

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Thibodeau, J., D. S. Chanasyk, and L. G. Fuller. "Variability of vertical bromide redistribution within hummocky landscape." Canadian Journal of Soil Science 88, no. 3 (2008): 349–63. http://dx.doi.org/10.4141/cjss07037.

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Groundwater quality is a major issue for rural communities, and intensive agricultural practices have the potential to contaminate groundwater via leaching. By analysing the movement of a bromide tracer over three slope positions (top, middle and low) within two hummocky landscapes in central Alberta, the intensity of short-term leaching potential was measured, and the accuracy of a leaching potential index was assessed. Concentrations of bromide > 1 mg kg-1 were found at a 120-cm depth at each slope position, from both landscapes, after one snowmelt event and one growing season. However, t

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Rautiainen, Laura, Jani Tyynelä, Mikko Lensu, et al. "Utö Observatory for Analysing Atmospheric Ducting Events over Baltic Coastal and Marine Waters." Remote Sensing 15, no. 12 (2023): 2989. http://dx.doi.org/10.3390/rs15122989.

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Maritime safety relies on navigation, detection, and radio communication technologies that function through electromagnetic radiation. Propagation of electromagnetic radiation can be impacted by a disruptive phenomenon known as ducting. Our four-week study using a X-band coastal radar and various meteorological and marine observations, including vertical profiles of temperature, humidity and wind, in early spring 2022 concluded that the combination of measurements at the Utö observatory provides a reliable means of detecting ducting in the Archipelago Sea. The modified refractivity calculated

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Adani, Wia, Rossa Turpuk Gabe, Joko Adianto, and Antony Sihombing. "Analysing implications of visibility for crime occurrence in low income vertical rental-housing complex." A/Z : ITU journal of Faculty of Architecture 17, no. 3 (2020): 79–88. http://dx.doi.org/10.5505/itujfa.2020.89266.

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Chandra, Pratik, Rohit S. Kulshrestha, Ragni Tandon, Abhishek Singh, Ashish Kakadiya, and Mohammed Wajid. "Horizontal and vertical changes in anchor molars after extractions in bimaxillary protrusion cases." APOS Trends in Orthodontics 6 (May 30, 2016): 154–59. http://dx.doi.org/10.4103/2321-1407.183147.

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Objective To evaluate changes in the anchor molar position (horizontal, vertical) after retraction in bimaxillary protrusion maximum anchorage cases. Materials and Methods Thirty patients requiring maximum anchorage after extraction of the first premolars were selected for this study. The second molars were banded in both arches along with trans-palatal arch in the maxillary arch and lingual arch in the mandibular arch. En mass retraction was done using sliding mechanics. Horizontal and vertical positions of the anchor first molars were evaluated cephalometrically before and after orthodontic

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Atallah, Samer, Alaa Salloum, and Naji Kharouf. "Vertical Occlusal Dimension Changes of Complete Dentures between Autoclave and Traditional Processing Techniques." Applied Sciences 13, no. 10 (2023): 6031. http://dx.doi.org/10.3390/app13106031.

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The aim of the present in vitro study was to investigate the effect of using an autoclave with three different programs and the traditional water bath method (short cycle) on the changes in the vertical occlusal dimension of the complete acrylic dentures. Forty complete acrylic dentures were divided into four groups: G1, dentures were polymerized by water bath method (short cycle for 90 min at 74 °C and then 30 min at 100 °C); G2, dentures were polymerized with an autoclave (134 °C/2.1 bar/10 min); G3, dentures were polymerized with an autoclave (121 °C/1.1 bar/20 min); and G4, dentures were p

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Burkett, Lee N., Joana Ziuraitis, and Wayne T. Phillips. "The Effect of Four Different Warm-Ups on the Maximum Vertical Jump Test Scores for Female College Athletes." Women in Sport and Physical Activity Journal 10, no. 2 (2001): 83–93. http://dx.doi.org/10.1123/wspaj.10.2.83.

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The effectiveness of two specific and two non-specific warm-ups on the vertical jump test for female athletes was the focus of this research. The four warm-up procedures were: (a) weighted jumping (WT), (b) submaximal vertical jumping (SUB), (c) stretching (ST), and (d) no warm-up (NW). To control for learning and fatigue, a counter-balanced design was used to test all participants over four different days. Thus all groups were tested in a predetermined order. Participants were 15 university female athletes (age 18 to 23 years). After warming up using one of the four warm-up procedures, three

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Yadav, Rajiv, Kishor Dutta, Nabin Gosain, Anil K. Yadav, Neelam Yadav, and Kaushal K. Singh. "Vertical Proportion of the Face: A Cephalometric study." Orthodontic Journal of Nepal 11, no. 1 (2021): 24–28. http://dx.doi.org/10.3126/ojn.v11i1.39044.

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Introduction: Balance in vertical facial proportion is an important criteria for good esthetics. Variations in vertical growth are common and have certain orthodontic implications. The objectives of this study were to determine mean upper anterior facial height and lower anterior facial height, ratio between UAFH to LAFH and their difference among genders in skeletal Class I patients with different vertical growth pattern among patients visiting department of Orthodontic and Dentofacial orthopedics, Tribhuvan University Dental Teaching Hospital, Kathmandu. Materials and Method: This study was

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Özdayi, Nahit. "Analysing the Self-Efficacy Levels of Coaches of Different Branches." Pakistan Journal of Medical and Health Sciences 15, no. 7 (2021): 2206–9. http://dx.doi.org/10.53350/pjmhs211572206.

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Aim: This paper aims to analyse the self-efficacies of coaches of different branches. Methods: This study, which was conducted by using coach self-efficacy scale, reached totally 192 volunteering coaches who lived in Çanakkale and Balıkesir. The data collected were then analysed on the SPSS programme. The kurtosis and skewness values were examined so as to check the distribution of the data, and consequently, the data were found to have normal distribution. Results: As a result, statistically significant differences were found between the coaches aged 28-32 and coaches aged 33-37 in their leve

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García-Torres, Samy, and Gopal Santana Phani Madabhushi. "Performance of vertical drains in liquefaction mitigation under structures." Bulletin of Earthquake Engineering 17, no. 11 (2019): 5849–66. http://dx.doi.org/10.1007/s10518-019-00717-x.

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Abstract Several techniques have been developed in order to mitigate damage to buildings during and after liquefaction events. Benefits of using vertical drains have been verified by analysing their performance in the soil and evaluating their effectiveness in dissipation of excess pore pressures generated by the earthquake. However, the effect of drains in the soil below structures requires further investigation. In this paper, a dynamic centrifuge test series was carried out to evaluate the performance of a vertical drains arrangement below shallow foundations. High permeable rubble brick wa

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