Search results for "Ocean Engineering"
showing 10 items of 404 documents
Application Of Microholography for Ground-based In Situ Measurements in Stratus Cloud Layers: A Case Study
1993
Abstract A holographic droplet and aerosol recording system (HODAR) has been designed and operated in situ in a low-level stratus cloud layer adopting the Fraunhofer in-line technique to measure sizes and velocity vectors of cloud droplets as well as to determine sizes and shapes of other hydrometeors (e.g., graupel). The particle-size radii covered by this ground-based instrument range from three to several hundred micrometers. A case study conducted on the Kleiner Feldberg Mountain Observatory near Frankfurt, Germany, during November 1990 documents the temporal evolution of the cloud-droplet size distribution over a period of 19 h during which the size distribution changed from monomodal …
Evaluation of Surface Temperature and Emissivity Derived from ASTER Data: A Case Study Using Ground-Based Measurements at a Volcanic Site
2010
Abstract The land surface temperature (LST) and emissivity (LSE) derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data were evaluated in a low spectral contrast volcanic site at an altitude of 2000 m on the island of Tenerife, Spain. The test site is almost flat, thermally homogeneous, and without vegetation cover or variation in its surface composition. ASTER data correspond to six scenes, under both day- and nighttime conditions during 2008. This case study analyzes the impacts of the sources of inaccuracies using the temperature–emissivity separation (TES) algorithm. Uncertainties associated with inaccurate atmospheric correction were minimized by means…
A general comparison between various types of linear generators for wave energy conversion
2017
This paper presents a general comparison between various types of linear generators for wave energy conversion. According to the type of magnetic configuration they are distinguished as: linear asynchronous generators, linear generators with permanent magnets and linear reluctance generators. The paper shows their peculiarities and discusses their field of applications.
On an Amendment of the Morality of a Physicist’s Professional Actions. A “new” Element of Inculturation of Christianity into a Scientific-Technologic…
2020
O zmianie moralności profesjonalnych działań fizyka. Nowy element inkulturacji chrześcijaństwa w cywilizację naukowo-technologiczną
 Fizycy są zobowiązani, zgodnie z ustalonymi metodami i standardami fizyki, do myślenia i działania w ramach epistemologicznych, na co głęboki wpływ miał I. Kant. Klimat epistemologiczny, w którym się znajdują, sprzeciwia się epistemologicznemu klimatowi realizmu naturalnego, a tym samym epistemologicznemu klimatowi Objawienia chrześcijańskiego, kiedy mówi ono o naszym świecie. Ten kontrast niszczy wewnętrzną harmonię świata umysłowego każdego fizyka w takim stopniu, w jakim zależy on od jego ogólnego sposobu myślenia, a także od jego pracy zawodowej. Sytu…
Calibrating the Operational Beam Width and Maximum Range of a Ship Radar Used for Bird Observations
2010
In order to analyse quantitative radar observations of bird movements, one needs to know the dimensions of the air space surveyed by the radar. The present study shows how to calibrate the operational beam width and the maximum range of any radar for cross sections for different body sizes of songbirds. The trial used an X-band fan beam ship radar of 25 KW (Furuno Fr-2125) and a captive balloon. Metal spheres of different diameters, fastened to the bottom of the balloon at defined distances, corresponding to the radar cross sections of song birds, were moved in all three dimensions of the air space. Simultaneously to the location by radar, the position of the suspended sphere was measured b…
Active Single-Blade Installation Using Tugger Line Tension Control and Optimal Control Allocation
2020
Tsunami Vulnerability Evaluation for a Small Ancient Village on Eastern Sicily Coast
2022
The Ionian sea is prone to tsunamis due to its proximity to the Calabrian subduction zone, which is one of the major tsunamigenic areas of the Mediterranean. The tsunami disaster risk is, nowadays, significantly higher due to the increased exposure of buildings as a result of the economic and touristic growth of the Mediterranean coastal areas. This study focuses on Marzamemi, a small village in the western coast of Sicily, since its morphology and human presence amplify the need to assess its buildings’ vulnerability. The main objective of this research is to quantify the building vulnerability to tsunami hazards using a physical and realistic tsunami scenario. For this purpose, the relati…
DIGITAL MARKETING PERFORMANCE EVALUATION METHODS
2018
The share of digital marketing from total marketing spending is increasing fast year by year. Still the majority of companies admit that they are missing clear methods on how to evaluate (positive/negative) effects obtained using digital marketing. As this field of digital marketing is relatively new, there are no firm and widely recognized measurement methods resulting in marketing specialists being confused by an overwhelming amount and variety of different digital marketing metrics and large amounts of data. Therefore, the aim of this paper is to list the existing methods which could help marketers to evaluate their digital marketing campaign effectiveness and to discuss these methods’ e…
Indústria têxtil de Santa Catarina e sua capacidade inovadora: Estudo sob a perspectiva da eficiência, eficácia, custos e melhoria de processos
2014
Santa Catarina se destaca como um dos principais parques produtivos do setor têxtil. Assim como as demais indústrias têxteis brasileiras, a catarinense vem sofrendo pressões de mercado, principalmente dos países asiáticos. O estudo teve como objetivo identificar se as dimensões - eficiência, eficácia, custos e as melhorias de processo – estão associadas ao desempenho da inovação na indústria têxtil de Santa Catarina. A pesquisa foi descritiva, exploratória e causal, de levantamento ou survey e quantitativa. A amostra foi composta por 441 respondentes de 16 organizações do estado de Santa Catarina. Os dados foram analisados por meio de análise fatorial exploratória, análise fatorial confirma…