scholarly journals Sensors and Measurements for Unmanned Systems: An Overview

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1518
Author(s):  
Eulalia Balestrieri ◽  
Pasquale Daponte ◽  
Luca De Vito ◽  
Francesco Lamonaca

The advance of technology has enabled the development of unmanned systems/vehicles used in the air, on the ground or on/in the water. The application range for these systems is continuously increasing, and unmanned platforms continue to be the subject of numerous studies and research contributions. This paper deals with the role of sensors and measurements in ensuring that unmanned systems work properly, meet the requirements of the target application, provide and increase their navigation capabilities, and suitably monitor and gain information on several physical quantities in the environment around them. Unmanned system types and the critical environmental factors affecting their performance are discussed. The measurements that these kinds of vehicles can carry out are presented and discussed, while also describing the most frequently used on-board sensor technologies, as well as their advantages and limitations. The paper provides some examples of sensor specifications related to some current applications, as well as describing the recent research contributions in the field.

1958 ◽  
Vol 104 (434) ◽  
pp. 133-143 ◽  
Author(s):  
T. Adeoye Lambo

This contribution towards the subject is limited to three of its aspects—namely, the possible aetiological role of inherited predisposition and psychogenic factors (mainly environmental to which the patient is still exposed), the relationship between late endogenous depression and the symptoms of cerebrovascular changes, and prognosis. On the face of it, prognosis of course must ultimately depend on that of the cerebrovascular disorder but apparently hereditary and environmental factors play a more significant role. Inherited predisposition is here assessed in terms of constitutional and personality factors.


2018 ◽  
Vol 53 (3) ◽  
pp. 349-364 ◽  
Author(s):  
Jana Medvecká ◽  
Mária Zaliberová ◽  
Jana Májeková ◽  
Dušan Senko ◽  
Ivan Jarolímek

2021 ◽  
Vol 17 (12) ◽  
pp. 81
Author(s):  
Zeyang Peng ◽  
Kehui Deng ◽  
Yilin Wei ◽  
Ziqi Wang

In response to the factor that affects the evolution of Leishan Miao embroidery style, this paper, based on field inspections and consulting related county chronicles, characterizes its style from two aspects: pattern composition and content, and tries to characterize its style from the perspectives of craftsmanship and the social role of embroidery women. By reviewing the angles of change, and analyzing the reasons for the evolution of embroidery styles, this research has found that the style of Miao embroidery can be summarized as the proper use of continuous and separate patterns, as well as the fusion of reality and illusion in the subject matter. The study holds that the comprehensive application of stitching is the technical guarantee for the evolution of styles. At the same time, the transformation of embroidery women's social roles from “women weavers” to “women farmers” and then to “businesswomen” is the potential motivation for the evolution of embroidery styles.


2015 ◽  
Vol 27 (1) ◽  
pp. 40-60 ◽  
Author(s):  
Abel Duarte Alonso ◽  
Alessandro Bressan

Purpose – The purpose of this paper is to study resilience among micro and small wineries. While the subject of organisational resilience has drawn the attention or numerous researchers, there is an argument that limited empirical evidence exist to support different theoretical constructs in regards to resilience. Thus, the paper addresses a knowledge gap. Design/methodology/approach – A questionnaire was designed to investigate strategies that can help businesses to become more resilient to contemporary challenges. A total of 273 owners and managers of Italian wineries participated in the study. Findings – Increasing costs, institutional barriers and the effects of the economic crisis on consumers’ wine purchases are perceived as most serious challenges. One fundamental impact is respondents’ loss of trust in institutions. Alternatives such as diversifying, knowledge of foreign languages and educational activities emerged as crucial to improve wineries’ performance, and therefore build their resilience. Practical implications – These findings highlight the vital role of institutions in developing supporting strategies to nurture an entrepreneurial culture among owners and managers of a very important group of businesses. Originality/value – By empirically investigating ways to achieve resilience among businesses of a traditional European sector, the study addresses a knowledge gap identified in contemporary research. The study also contributes to the development of the theory of resilience, for instance, by considering the literature on the theory of resilience, considering and adopting factors affecting micro and small enterprises’ resilience and identifying some of these factors in the context of micro and small wine enterprises.


Water Policy ◽  
2005 ◽  
Vol 7 (1) ◽  
pp. 1-19 ◽  
Author(s):  
R. Maria Saleth ◽  
Ariel Dinar

This paper aims to set the stage with an outline of the conceptual, analytical and theoretical aspects of water institutional reforms and a synthesis of the main findings from the reform experiences of six countries: Australia, Chile, Morocco, Namibia, South Africa and Sri Lanka. Utilizing the latest developments in the literature on the subject, this paper presents the analytics of unbundling water institutions to show their endogenous and exogenous linkages, the transaction cost approach as a diagnostic framework for understanding the role of factors affecting water institutions, and a stage-based perspective to provide insights into the internal mechanics and dynamics evident in the process of water institutional change. Using this analytical framework and theoretical approach, this paper also identifies a few practically relevant principles for reform design and implementation. Based on a review of country reform experiences, the paper also synthesizes reform theories with actual practices by providing anecdotal evidence for various theoretical postulates and practical reform principles.


2010 ◽  
Vol 61 (4) ◽  
pp. 885-890 ◽  
Author(s):  
N. F. Bolton ◽  
N. J. Cromar ◽  
P. Hallsworth ◽  
H. J. Fallowfield

Waste stabilisation ponds (WSP) are efficient, cost-effective methods of treating wastewater in rural and remote communities in Australia. It is recognised that sunlight plays a significant role in their disinfection, however, due to the poor penetration of light in turbid waters it has been hypothesised that other mechanisms may also contribute to disinfection in WSPs. To date, studies have reported various and conflicting results with regards to the relative contributions of UVA, UVB, PAR and environmental factors including pH, DO and photo-sensitisers on micro-organism disinfection. Initially we investigated the role of these environmental factors on the solar disinfection of enterococci in buffered distilled water to control for potential confounding factors within the wastewater. Die-off rate constants were measured, in sterile buffered distilled water at varying pH and dissolved oxygen concentrations, for enterococci irradiated with UVA and UVB. Enterococci were found to be predominantly inactivated by UVB (p < 0.001), however, UVA was also observed to increase inactivation rates relative to the dark control (p < 0.001). DO and pH were found to have no effect on inactivation rate when enterococci were irradiated with UVB (p > 0.05), however, when irradiated with UVA, both DO and pH were observed to further increase inactivation rates (p < 0.01).


Author(s):  
Andi fitri Faharuddin ◽  
Azizah Siti ◽  
Wisaptiningsih Umi

Participation is an important component in the process of empowering a community, especially farmers. In this process, the community is supported to improve prosperity independently. The role of institutions as facilitators who accompany the empowerment process. In principle, the community is the perpetrator and the subject of development. it requires Information related factors that influence the participation of breeders in the Empowerment program so that the preparation of empowerment strategy can be more directional and the result will be more optimal. This research aims to determine the factors affecting the participation of farmers in the grazing Empowerment program as a reference to create a more interesting empowerment program. The research was conducted in the Pinrang district of Suppa and Mattirobulu sub-districts with samples of 147 breeders. The collection of research data is done using questionnaires and then carried out data using the SmartPLS statistics tool. The result of this research is known that the factors affecting the participation of farmers are the motivation and stakeholder role.


2018 ◽  
Vol 14 (1) ◽  
pp. 74
Author(s):  
Nur Hafsah Yunus

This study aims to: (1) To find out the implementation of learning to listen to news using Team Product method on class VIII students SMP Negeri 3 Malunda; (2) To find out how the team product method can improve the ability to listen to the news of the students of class VIII SMP Negeri 3 Malunda. The population as the object of this research is class VIII SMPN 3 Malunda, Malunda Sub-district, Majene Tengah Regency for the academic year 2017 / 2018.The total number of students of class VIIID is 32 students, but the subject in this study only 30 students, sample in this study. Instruments used in this study there are two kinds of news capabilities and tests test questionnaire. The ability test is used to know the ability of the students to use the team product method to improve the ability to listen to the news, while the questionnaire used as data collection to determine the factors that influence the use of team product method to improve the ability to listen to news. The results of this study show the use of team product method to improve the ability of listening news is not sufficient, because the sample did not achieve results in accordance with predefined criteria. Factors affecting the ability of the students through the use of team product methods to improve the ability to listen to news are: Factors phsikologi learners, media limitations and facilities of instruction, environmental factors. From the results of the above analysis can be concluded that the level of use of team product methods in improving the ability to listen to news students in grade VIII SMPN 4 Malunda, Malunda District, Majene District has not been adequate.


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