First results with the ANET Compact Thermal Neutron Collimator

This paper presents the first determination of the spatial resolution of the ANET Compact Neutron Collimator, obtained with a measuring campaign at the LENA Mark-II TRIGA reactor in Pavia. This novel collimator consists of a sequence of collimating and absorbing channels organised in a chessboard-like geometry. It has a scalable structure both in length and in the field of view. It is characterized by an elevated collimation power within a limited length. Its scalability and compactness are added values with respect to traditional collimating system. The prototype tested in this article is composed of 4 concatenated stages, each 100 mm long, with a channel width of 2.5 mm, delivering a nominal L/D factor of 160. This measuring campaign illustrates the use of the ANET collimator and its potential application in neutron imaging for facilities with small or medium size neutron sources.

Transition of May Measurement Month to an online hypertension awareness campaign in Korea during the COVID-19 pandemic

Aims May Measurement Month (MMM) is a global campaign to enhance hypertension awareness by intensive blood pressure measuring campaign during a month period of May. May Measurement Month 2020 was not officially executed globally, especially in light of COVID-19 pandemic. But in Korea, the MMM committee decided to carry on with self-initiated project to succeed MMM started in 2019 in Korea. And we adopted new online strategies for those with age of 18 or older under the MMM Methods and results Korea 2020 theme in Korean of ‘Look for the Young Hypertension’. A promotional video, a subtitled translated global promotional video, and four educational contents were uploaded on Youtube®. Seven online posters or card news were uploaded on main blog. And 71 articles by 60 websites from 10 medical media company were published. The MMM keyword exposure in Naver® portal Search Advertisements was 2500 searches per day. There were 3519 visits to the MMM blog, and 114 people participated in snapshot challenges. Four social network service channels were activated, and there was an increase in Facebook and Instagram followers of 6.5- and 5.8-fold, respectively. GoodDoc® application programming interface messages were sent 97876 times (2589 responses). For a user created contents contest, 28 competitors, mostly young, participated. Conclusion Even during the COVID-19 pandemic, the MMM campaign was able to survive using a ‘new normal’ online format. The shift to on-line activity during the pandemic will contribute to a breakthrough MMM campaign in the future that can be combined with off-line protocols even after the pandemic.

Comparison of Different On-Site Measurement Methods and Their Practical Accuracy

Turbines or pumps in hydropower plants achieve peak efficiencies of far more than 90% depending on the specific speed and the type of machine. Based on model tests or numerical simulations, the efficiency of a prototype machine has to be guaranteed and measured with the best measurement technique available. The choice of the appropriate efficiency measurement method does not only depend on the expected measurement uncertainties and tolerances set in a contract, it is also a question of the effort required for such a measuring campaign and of technical challenges, e.g., limitations imposed by plant operating conditions as draining of the system or constant load operation. Concerning hydraulic turbomachines, modern measuring technology offers different methods for efficiency measurements at a turbine unit. Primarily through the development of real-time capable data acquisition systems, it is possible to perform high-precision measurements rather quickly, whereby minimal downtimes can be achieved. In the first part, the specific measurement methods available in different standards are presented in an overview, and then in the second part, the achieved accuracies of a very complex thermodynamic measurement are compared with a low-cost clamp-on acoustic Doppler measurement using a concrete example.

Automated multi-classifier recognition of atmospheric turbulent structures obtained by Doppler lidar

We present algorithms and results of automated processing of LiDAR measurements obtained during VEGILOT measuring campaign in Paris in autumn 2014 in order to study horizontal turbulent atmospheric regimes on urban scales. To process images obtained by horizontal atmospheric scanning using Doppler LiDAR, the method is proposed based on texture analysis and classification using supervised machine learning algorithms. The results of the parallel classification by various classifiers were combined using the majority voting strategy. The obtained estimates of accuracy demonstrate the efficiency of the proposed method for solving the problem of remote sensing of regional-scale turbulent patterns in the atmosphere.

Soil moisture and matric potential – An open field comparison ofsensor systems

Soil water content and matric potential are central hydrological state variables. A large variety of automated probesand sensor systems for state monitoring exists and is frequently applied. Most studies solely rely on the calibration by themanufacturers. Until now, there is no commonly agreed calibration procedure. Moreover, several opinions about the capabilitiesand reliabilities of specific sensing methods or sensor systems exist and compete. A consortium of several institutions conducted a comparison study of currently available sensor systems for soil water5content and matric potential under field conditions. All probes have been installed in 0.2 m depth below surface following best practice procedure. We present the setup and the recorded data of 58 probes of 15 different systems measuring soil moisture and further 50 probes of 14 different systems for matric potential. The measuring campaign was conducted in the growing period of 2016. The monitoring data, results from pedophysical analyses of the soil and laboratory reference measurements for calibration are published in Jackisch et al. (2018, https://doi.org/10.1594/PANGAEA.892319).

Popularity equilibrium: Testing a general theory of local campaign effectiveness

Parties and candidates target campaign resources where they are most likely to pay electoral dividends. At the individual level it has been shown that some individuals are more likely to be persuaded by campaign contacts than others. In a parallel tradition of measuring campaign effectiveness at the macro level, previous research has demonstrated that local candidate campaign effort measured is significantly related to electoral performance. However, while there is evidence suggestive of macro level effects, there is little systematic evidence about the district level conditions under which campaign efforts are most productive. Drawing on extensive data across six UK general elections between 1992 and 2015, we advance a theory of local campaign efficacy and test a general model of popularity equilibrium. We demonstrate that there is a curvilinear relationship between the underlying level of party support in an electoral district and the intensity of the district-level campaign – there is a ‘sweet-spot’ for maximizing the returns of campaign effort.

Otimização do método dos molinetes com ajuste do perfil hidrodinâmico para a estimação da descarga líquida em corpos hídricos usando recursos de interpolação e integração numérica

In the last years, there has been an increase in computational analyses in the study of hydrodynamic profiles for the determination of flows in watercourses as an attempt to reduce inaccuracies in traditional calculations. This article aims to develop an algorithm for the determination of flow rates in open channels using numerical procedures to optimize the hydrometric windlasses method in order to reduce the time in data analyzes and to provide a detailed treatment of velocities as a function of depth. In this article, the input data used in the computational project result from the measuring campaign present in Literature,which was carried out in the Braço do Norte river, in the Tubarão river basin, at the point where the São Ludgero Hydrometeorological Station, of National Waters Aggency (ANA), is located, in SC. Regarding the method of the windlasses in their traditional form,the model presented in this work presents small percentage differences of estimates This allows the validation of the proposed model and means that the use of numerical integrations and interpolations, especially the cubic splines, for the modeling of the flow measurement in watercourses is satisfactory and it can be used in the practice of instrumentation and measurement.