scholarly journals Field report: Deployment of a fleet of drones for cloud exploration

2022 ◽  
Vol 14 ◽  
pp. 175682932110708
Author(s):  
Gautier Hattenberger ◽  
Titouan Verdu ◽  
Nicolas Maury ◽  
Pierre Narvor ◽  
Fleur Couvreux ◽  
...  

Drones are commonly used for civil applications and are accessible to those with limited piloting skills in several scenarios. However, the deployment of a fleet in the context of scientific research can lead to complex situations that require an important preparation in terms of logistics, permission to fly from authorities, and coordination during the flights. This paper is a field report of the flight campaign held at the Barbados Island as part of the NEPHELAE project. The main objectives were to fly into trade wind cumulus clouds to understand the microphysical processes involved in their evolution, as well as to provide a proof of concept of sensor-based adaptive navigation patterns to optimize the data collection. After introducing the flight strategy and context of operation, the main challenges and the solutions to address them will be presented, to conclude with the evaluation of some technical evolution developed from these experiments.

2016 ◽  
Vol 144 (2) ◽  
pp. 681-701 ◽  
Author(s):  
Virendra P. Ghate ◽  
Mark A. Miller ◽  
Ping Zhu

Abstract Marine nonprecipitating cumulus topped boundary layers (CTBLs) observed in a tropical and in a trade wind region are contrasted based on their cloud macrophysical, dynamical, and radiative structures. Data from the Atmospheric Radiation Measurement (ARM) observational site previously operating at Manus Island, Papua New Guinea, and data collected during the deployment of ARM Mobile Facility at the island of Graciosa, in the Azores, were used in this study. The tropical marine CTBLs were deeper, had higher surface fluxes and boundary layer radiative cooling, but lower wind speeds compared to their trade wind counterparts. The radiative velocity scale was 50%–70% of the surface convective velocity scale at both locations, highlighting the prominent role played by radiation in maintaining turbulence in marine CTBLs. Despite greater thicknesses, the chord lengths of tropical cumuli were on average lower than those of trade wind cumuli, and as a result of lower cloud cover, the hourly averaged (cloudy and clear) liquid water paths of tropical cumuli were lower than the trade wind cumuli. At both locations ~70% of the cloudy profiles were updrafts, while the average amount of updrafts near cloud base stronger than 1 m s−1 was ~22% in tropical cumuli and ~12% in the trade wind cumuli. The mean in-cloud radar reflectivity within updrafts and mean updraft velocity was higher in tropical cumuli than the trade wind cumuli. Despite stronger vertical velocities and a higher number of strong updrafts, due to lower cloud fraction, the updraft mass flux was lower in the tropical cumuli compared to the trade wind cumuli. The observations suggest that the tropical and trade wind marine cumulus clouds differ significantly in their macrophysical and dynamical structures.


2019 ◽  
Vol 10 (2) ◽  
Author(s):  
Adrielly Haiany Coimbra Feitosa ◽  
Tamires Barradas Cavalcante ◽  
Kezia Cristina Batista Dos Santos ◽  
Gabriela Sellen Campos Ribeiro

Objetivo: identificar o perfil e a produção científica dos bolsistas de produtividade em pesquisa do Conselho Nacional de Pesquisa (CNPq) da área da Residência Multiprofissional em Saúde (RMS) no triênio 2013-2015. Metodologia: estudo descritivo e quantitativo. A pesquisa foi realizada no mês de setembro de 2017, utilizou-se formulário estruturado para coleta de dados a partir do currículo Lattes. Resultados: foram identificados 23 bolsistas, 91,5% do sexo feminino, 78,2% da categoria 2 e 43,5% da área da Enfermagem. Dentre o total de periódicos publicados 8 foram sobre a RMS com predominância de Qualis B1 e B4. Quanto às orientações sobre a RMS 23 foram realizadas no último triênio. Conclusão: é necessário estimular pesquisas sobre à RMS objetivando o conhecimento e valorização dessa modalidade educativa, bem como estimular a sua importância nos serviços de saúde. Estudos dessa natureza são necessários para nortear novas pesquisas.Descritores: Academias e Institutos; Internato não Médico; Pesquisa Científica e Desenvolvimento Tecnológico.PROFILE OF THE PRODUCTIVITY SCOLARSHIPS OF THE MULTIPROFESSIONAL HEALTH RESIDENCY PROGRAM IN THE TRIENNIUM 2013-2015Objective: to identify the profile and scientific production of research productivity fellows from the Brazilian National Research Council (CNPq) of the Multiprofessional Health Residence (RMS) in the triennium 2013-2015. Methodology: descriptive and quantitative study. The research was conducted in September 2017, using a structured form for data collection from the Lattes curriculum. Results: 23 scholarship recipients were identified, 91.5% female, 78.2% from category 2 and 43.5% from the Nursing area. Among the total of published journals, 8 were on RMS with a predominance of Qualis B1 and B4. About the orientations about RMS, 23 were conducted in the last three years. Conclusion: it is necessary to stimulate research on RMS aiming at the knowledge and valuation of this educational modality, as well as stimulating its importance in health services. Studies of this nature are needed to guide new research.Descriptors: Academies and Institutes; Internship not Medical; Scientific Research and Technological DevelopmentPERFIL DE LOS BOLSISTAS DE PRODUCTIVIDAD DEL PROGRAMA DE RESIDENCIA MULTIPROFESIONAL EN SALUD EN EL TRIENIO 2013-2015Objetivo: identificar el perfil y la producción científica de los becarios de productividad en investigación del Consejo Nacional de Investigación (CNPq) del área de la Residencia Multiprofesional en Salud (RMS) en el trienio 2013-2015. Metodología: estudio descriptivo y cuantitativo. La encuesta fue realizada en el mes de septiembre de 2017, se utilizó formulario estructurado para recolección de datos a partir del currículo Lattes. Resultados: se identificaron 23 becarios, 91,5% del sexo femenino, 78,2% de la categoría 2 y 43,5% del área de la Enfermería. De entre el total de periódicos publicados 8 fueron sobre la RMS con predominancia de Qualis B1 y B4. En cuanto a las orientaciones sobre la RMS 23 se realizaron en el último trienio. Conclusión: es necesario estimular investigaciones sobre la RMS objetivando el conocimiento y valorización de esa modalidad educativa, así como estimular su importancia en los servicios de salud. Los estudios de esta naturaleza son necesarios para orientar nuevas investigaciones.Descriptores: Academias e Institutos; Internado no Médico; Investigación Científica y Desarrollo Tecnológico.


2021 ◽  
Author(s):  
Eshkol Eytan ◽  
Ilan Koren ◽  
Alexander Khain ◽  
Orit Altaratz ◽  
Mark Pinsky ◽  
...  

<p>The strong coupling between dynamic, thermodynamic, and microphysical processes and the numerous environmental parameters on which they depend makes clouds a highly complex system. Adiabatic regions (i.e., undiluted core) in the cloud allow to approximate in a simple way thermodynamic and microphysical profiles and provide local boundary conditions (i.e. core is a source of adiabatic values in each level). Mixing of the cloud with its environment affects both the cloud and the environmental properties. While environmental humidity, temperature and aerosol loading affect the clouds’ buoyancy and droplets size distribution (DSD), clouds simultaneously affect their surrounding via detrainment of droplets, humid air, and processed aerosols. Mixing occurs within a large spectrum of scales and leads to deviation of parts of the cloud from adiabaticity. The level of adiabaticity can be represented continuously by the adiabatic fraction (AF; defined as the ratio of the liquid water content to the theoretical adiabatic value). In this work we used the System of Atmosphere Modeling (SAM) with the Hebrew University Spectral Bin Microphysics to simulate a few isolated non-precipitating trade cumulus clouds (in different sizes and aerosol loading) in high resolution (10m). Passive tracer was added to all the simulations. We found cloudy volumes that contain both high tracer concentration and high AF (up to the clouds’ top), compared these two measures of mixing, and discuss their differences. The accuracy of AF calculations, based on different known methods is tested. For example, we show that the saturation adjustment assumption that is often used in AF calculations can lead to an underestimation of AF in pristine environments. This will mask microphysical effects and cause biases when comparing the adiabaticity of clouds under different aerosols loading. We show that the space spanned by the AF versus height in the cloud is a good measure for describing changes in cloud’s key variables in space and time (like temperature, updraft, and DSD properties). This space of AF vs height demonstrates how certain processes (e.g. in-cloud nucleation, mixing, evaporation, etc.) dominate different regions in the cloud (core, edge), and cause different dependence of the DSD on AF under different aerosols loading.</p>


Paid ◽  
2017 ◽  
Author(s):  
Finn Brunton

This article is a field report on PorcFest, a libertarian festival. The festival is part of the Free State Project, which seeks to build a libertarian voting bloc in New Hampshire. Porcfest is also a temporary proof-of-concept for a utopian libertarian society. At PorcFest, the preferred money forms are those that contain precious metals (such as bits of silver or pre-1964 US dimes) and cryptocurrencies like Bitcoin, which offer a kind of digital metallism. As a temporary site of economic alterity, PorcFest offers a reworked vision of shared value and trust in and between individuals.


2019 ◽  
Vol 14 (3) ◽  
pp. 399-414
Author(s):  
Kelly Nisbet ◽  
Michel Généreux ◽  
Blake Anderson ◽  
Victor Kuperman

Abstract This paper introduces a freely available and easy to use Java application for the collection and recording of Cloze probability ratings. Clozapp presents participants with text fragments of the researchers’ choice and collects guesses regarding upcoming words. It can also collect basic demographic information about participants. Available modes of data collection include elicitation of responses to a limited number of omitted words in a text or to all words in a text. Clozeapp can be customized to present instructions and experimental stimuli in any given language and to collect multiple types of demographic data. This paper presents the application by detailing the states and actions available, as well as descriptions of how to customize the app to fit different experimental needs including possible input and output details. The application manual is provided. As a proof of concept, we used Clozapp to conduct a replication study of two existing collections of Cloze probability norms. The Clozapp norms showed strong reliable correlations (r > 0.7) with both existing data sets, suggesting a high convergence between modes of data collection. The application provides an efficient and customizable way of collecting predictability norms for language research.


CCIT Journal ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 33-43
Author(s):  
Khanna Tiara ◽  
Dewi Immaniar ◽  
Fiqih Arzia

The system supplies the right stuff and fit is important for College field in terms of the preparation of Perguruan Tinggi Raharja and loaning stuff on the computer systems Laboratory (Lab. Digital). Lab. Digital Perguruan Tinggi Raharja is used to perform testing, scientific research, education, practice and research. Lab. Digital is equipped with the tools needed to support the activities that are carried out so that the need for the process of recording of inventory of existing equipment in the Lab. sk. this process it is important to monitor or monitor the condition of the existing equipment. The process of recording data inventory equipment Lab. Digital still performed manually has some drawbacks, namely in terms of storage and retrieval. If the goods supplied on Lab. Digital not groomed properly then the goods will be lost and many are not well maintained, in this regard are also not recorded properly on the Lab. SK Perguruan Tinggi Raharja would suffer losses as a result of monitoring the preparation did not go well. This has been the rationale of how making an inventory system so ease Perguruan Tinggi Raharja for monitoring data collection, monitoring of loan items of goods and the creation of reports in the Lab. Digital it is possible to use a combination of using the method of analysis of CSF (Critical Success Factor) as an attempt to interpret objective explicitly to specify the activities that must be performed and what information is needed. And by making the system inventory can be seen 4 conditions of goods if the goods arelost, damaged, or expired good so that it can monitor inventory items in a Lab. Digital Perguruan Tinggi Raharja


2013 ◽  
Vol 13 (1) ◽  
pp. 1855-1889 ◽  
Author(s):  
A. Seifert ◽  
T. Heus

Abstract. Trade wind cumulus clouds often organize in along-wind cloud streets and across-wind mesoscale arcs. We present a benchmark large-eddy simulation which resolves the individual clouds as well as the mesoscale organization on scales of O(10 km). Different methods to quantify organization of cloud fields are applied and discussed. Using perturbed physics large-eddy simulations experiments the processes leading to the formation of cloud clusters and the mesoscale arcs are revealed. We find that both cold pools as well as the sub-cloud layer moisture field are crucial to understand the organization of precipitating shallow convection. Further sensitivity studies show that microphysical assumptions can have a pronounced impact on the onset of cloud organization.


2021 ◽  
Vol 2 (1) ◽  
pp. 1-3
Author(s):  
Mohd Hafiz Arzmi

Research misconduct is defined as fabrication, falsification, or plagiarism in proposing, performing, or reviewing research, or in reporting research results (Anderson, 2013; Breen, 2016; Resnik, 2019). It can occur at many stages of the research process.  These include during proposal preparation, data collection, analysis and publication (Amin et al., 2012).  The previous studies reported that 2,047 articles were retracted from PubMed in May 2012, with 67% of the articles due to misconduct (Dal-Ré et al., 2020).  Besides, the percentage of retracted papers in the year of 2012 were reported to increase by 10-fold compared to the total articles retracted in 1975 (Fang et al., 2012).  According to Liu and Chen (2018), the data from Retraction Watch on the 31st July 2017 revealed that the US, China, Germany, Japan and India were the top six countries that had articles retracted. 


2018 ◽  
Vol 17 (4) ◽  
pp. 461-479 ◽  
Author(s):  
Sílvia Gomes ◽  
Vera Duarte

The main purpose of this article is to discuss some ethical-methodological issues associated with scientific research in confinement settings, particularly those that result from the relationship with the confined individual in the framework of qualitative research. Basing the reflection on empirical research developed by both authors in Portuguese confinement settings – prisons and youth educational centres – we examine the significant challenges and dilemmas this type of research entails, exploring the interface between procedural ethics and ethics in practice at three points in the analytical process: before, during and after data collection. This article illustrates the interplay between formal and informal procedures, and between the initial distancing and strangeness when making contact with confinement settings and their social actors and the institutional and relational dynamics that become ingrained in our everyday practice. Our goal is to give visibility to these institutional and relational dynamics and to reflect on the challenges experienced by those who enter confinement settings to do research, in an effort to make the research process more transparent and at the same time more reflexive. We end our reflection advocating more ethically committed and critical scientific research.


2015 ◽  
Vol 23 (2) ◽  
pp. 12-25
Author(s):  
Martin Šveda ◽  
Michala Madajová

Abstract The results of a ‘proof-of-concept’ study that examined a new opportunity for using GPS technology in activity surveys are presented in this article. The aim is to demonstrate the method of collection and processing of individual time-space data via the dual records of a time-space diary and the GPS locator. The GPS technology here is not treated as a substitute for the traditional method of diaries; rather, the paper concentrates on the potential existing in a combination of these two techniques. The time-geographical approach and the corresponding methodology are used in order to assess the complexities of an individual’s everyday life, and to capture the spectrum of human activities in a data frame applicable to different analyses in behavioural, social and transportation research. This method not only improves the quality and robustness of spatio-temporal data, but also reduces under-reporting and the burdens on the respondents.


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