scholarly journals A Comparative Study of On-Body Radio-Frequency Links in the 420 MHz–2.4 GHz Range

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4165 ◽  
Author(s):  
Arno Thielens ◽  
Robin Benarrouch ◽  
Stijn Wielandt ◽  
Matthew Anderson ◽  
Ali Moin ◽  
...  
Keyword(s):  
Comparative Study ◽  
Radio Frequency ◽  
Phased Array ◽  
Beam Steering ◽  
Path Loss ◽  
Mitigation Strategies ◽  
Body Area ◽  
The Right ◽  
Path Loss Measurements ◽  
Selection Of

While there exists a wide variety of radio frequency (RF) technologies amenable for usage in Wireless Body Area Networks (WBANs), which have been studied separately before, it is currently still unclear how their performance compares in true on-body scenarios. In this paper, a single reference on-body scenario—that is, propagation along the arm—is used to experimentally compare six distinct RF technologies (between 420 MHz and 2.4 GHz) in terms of path loss. To further quantify on-body path loss, measurements for five different on-body scenarios are presented as well. To compensate for the effect of often large path losses, two mitigation strategies to (dynamically) improve on-body links are introduced and experimentally verified: beam steering using a phased array, and usage of on-body RF repeaters. The results of this study can serve as a tool for WBAN designers to aid in the selection of the right RF frequency and technology for their application.

scholarly journals The use of personality tests as a pre-employment tool: A comparative study

2021 ◽  
Vol 119 ◽  
pp. 05007
Author(s):  
Ahmed Remaida ◽  
Aniss Moumen ◽  
Youness El Bouzekri El Idrissi ◽  
Benyoussef Abdellaoui ◽  
Youssef Harraki
Keyword(s):  
Comparative Study ◽  
Educational System ◽  
Personality Testing ◽  
Recruitment Process ◽  
Personality Tests ◽  
Knowledge And Skills ◽  
Open Debate ◽  
The Right ◽  
A Company ◽  
Selection Of

The mechanisms of professional selection of young graduates in the labour market remain an open debate and involve all stakeholders: students, educational system, companies and administrations. These mechanisms play a crucial role in the future performances of an institution or a company, as the selection of the wrong candidate can ruin an organization. In contrast, the right candidate can take the organization to new heights. The interview presents a short interaction that may reflect the candidate knowledge and skills; however, there are many other hidden facets such as personality traits that are difficult to measure only by interviewing. Today, many countries already use personality testing during the recruitment phase. Our objective through this work is to determine the possible links between the personality of future young employees and their performance within the company. To achieve this objective, we carried out a comparative study of the different personality tests used in the recruitment process.

scholarly journals Studi komparasi traffic island Ciung Wanara di Gianyar dengan traffic island Satrya Gatotkaca di Tuban

2019 ◽  
pp. 27
Author(s):  
I Komang Priyanata ◽  
Cokorda Gede Alit Semarajaya ◽  
Ni Wayan Febriana Utami
Keyword(s):  
Comparative Study ◽  
Field Survey ◽  
Road Traffic ◽  
The Road ◽  
Interview Research ◽  
Large Size ◽  
The Right ◽  
Lower Plants ◽  
Selection Of

Comparative study of Ciung Wanara traffic island in Gianyar with Satrya Gatotkaca traffic island In Tuban. Traffic island is an island in the middle of the road that serves to direct the flow of traffic and a waiting place for the user to cross the road. Traffic island of Ciung Wanara in Gianyar and Traffic island of Satrya Gatotkaca in Tuban had turned their function of being a place of recreation for the community. The purpose of this study is to invent existing condition of Ciung Wanara and Satrya Gatotkaca traffic island. This study also provides recommendations in the form of designs that can improve the function of the site. The method used in this research was field survey by conducting observation, distributing questioner and doing interview. Research showed that, users in Ciung Wanara traffic island were dominated by student while users who came to the traffic island Satrya Gatotkaca were dominated by employees. The selection of vegetation bettwen the traffic island of Ciung Wanara and traffic island of Satrya Gatotkaca very different. Vegetation in the traffic island of Ciung Wanara used more of large size vegetation that can block the view of the user of the vehicle, while the vegetation used in the traffic island of Satrya Gatotkaca use lower plants size. The recommendation given in both locations was to add access to traffic island of Ciung Wanara so as to make easier for users to find the right place to cross, while traffic island of Satrya Gatotkaca was arraged it crossing space for more convenient and secure for users to passed the crosswalk.

scholarly journals An Integrated Approach to Identify Low-Flammability Plant Species for Green Firebreaks

Fire ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 9
Author(s):  
Brad R. Murray ◽  
Colin Brown ◽  
Megan L. Murray ◽  
Daniel W. Krix ◽  
Leigh J. Martin ◽  
...  
Keyword(s):  
Plant Species ◽  
Integrated Approach ◽  
Mitigation Strategies ◽  
Diverse Range ◽  
Low Intensity ◽  
Short Period ◽  
The World ◽  
Horizontal Spread ◽  
The Right ◽  
Selection Of

With recent and predicted increases in the frequency and intensity of wildfires, there is a pressing need for mitigation strategies to reduce the impacts of wildfires on human lives, infrastructure and biodiversity. One strategy involves the use of low-flammability plants to build green firebreaks at the wildland–urban interface. It is common, however, to encounter uncertainty in a diverse range of stakeholders about the concept of flammability as it applies to plants, which may impede efforts to identify suitable low-flammability plant species. Here, we provide an approach to identify low-flammability plant species that integrates three fundamental and relatively easy-to-measure plant-flammability attributes – ignitibility, sustainability and combustibility – in a way that removes confusion about the concept of plant flammability. These three intrinsic flammability attributes relate to each other such that an ideal low-flammability species is one that is slow to ignite, sustains burning for a short period of time and combusts with low intensity. Consideration is then given to secondary attributes of plants critical to the selection of low-flammability plants, including attributes that influence the volume of fuel available for fires and the vertical and horizontal spread of fires. More work is urgently needed across the world to identify low-flammability plant species using standardised measurement protocols, and our integrated approach provides a transparent way to ensure we are selecting the right species, for the right location, in green firebreaks.

An Optimized Scheme for Optical Phased Array Beam Steering Controlled by Wavelength

PIERS Online ◽  
2007 ◽  
Vol 3 (2) ◽  
pp. 127-131 ◽  
Author(s):  
Ying Zhao ◽  
Xiaozhou Yang ◽  
Qin Cai ◽  
Weiwei Hu
Keyword(s):  
Phased Array ◽  
Beam Steering ◽  
Optical Phased Array

PROBLEM ASPECTS OF THE IMPLEMENTATION OF CRIMINAL PROCEDURAL NORMS OF PROTECTION OF THE VICTIMS FROM CRIME

2020 ◽  
pp. 72-76
Author(s):  
Яна Валерьевна Самиулина
Keyword(s):  
Preventive Measure ◽  
Criminal Procedure ◽  
Legal Rights ◽  
Criminal Proceedings ◽  
Effective Mechanism ◽  
The Russian Federation ◽  
The Individual ◽  
The Right ◽  
To Receive ◽  
Selection Of

В настоящей статье предпринята попытка исследовать отдельные проблемные аспекты института потерпевшего в российском уголовном процессе. В этих целях подвергнуты анализу правовые нормы, регламентирующие его процессуальный статус. Раскрываются отдельные пробелы уголовно-процессуального законодательства в сфере защиты законных прав и интересов потерпевшего. Автор акцентирует внимание на том, что совершенствование уголовно-процессуального законодательства в части расширения правомочий потерпевшего по отстаиванию своих нарушенных преступлением прав следует продолжить. На основании проведенного исследования действующего законодательства в части регламентации прав потерпевшего от преступления предлагается расширить перечень получаемых им копий постановлений, указанных в п. 13 ч. 2 ст. 42 УПК РФ. Автор предлагает включить в перечень указанной законодательной нормы право получения потерпевшим копии постановления об избрании конкретного вида меры пресечения, избранного в отношении подозреваемого (обвиняемого). Для создания действенного механизма защиты интересов потерпевших от преступления юридических лиц предлагаем ч. 9 ст. 42 УПК РФ изложить в следующей редакции: «в случае признания потерпевшим юридического лица его процессуальное право в уголовном процессе осуществляет представляющий его профессиональный адвокат». This article attempts to investigate certain problematic aspects of the institution of the victim in the Russian criminal process. For this purpose, analyzed the individual norms governing his procedural status. Separate gaps of the criminal procedure legislation in the sphere of protection of the legal rights and interests of the victim are disclosed. The author emphasizes that the improvement of the criminal procedure legislation in terms of the extension of the victim’s authority to defend his rights violated by the crime should be continued. On the basis of the study of the current legislation regarding the regulation of the rights of the victim of a crime, it is proposed to expand the list of decisions received by him, referred to in paragraph 13, part 2 of article 42 Code of Criminal Procedure. The author proposes to include in the list of the indicated legislative norm the right to receive the victim a copy of the decision on the selection of a specific type of preventive measure, selected in relation to the suspect (accused). To create an effective mechanism for protecting the interests of legal entities victims of a crime, we offer part 9 of art. 42 of the Code of Criminal Procedure of the Russian Federation shall be reworded as follows: «if a legal entity is recognized as a victim, his procedural right in criminal proceedings is exercised by the professional lawyer representing him».

scholarly journals The Impact of Alkaloid-Producing Epichloë Endophyte on Forage Ryegrass Breeding: A New Zealand Perspective

Toxins ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 158
Author(s):  
Colin Eady
Keyword(s):  
Seed Production ◽  
Health Issues ◽  
Abiotic Stressors ◽  
Livestock Health ◽  
The Right ◽  
The Impact ◽  
The Relationship ◽  
And Storage ◽  
Selection Of ◽  
Epichloë Endophyte

For 30 years, forage ryegrass breeding has known that the germplasm may contain a maternally inherited symbiotic Epichloë endophyte. These endophytes produce a suite of secondary alkaloid compounds, dependent upon strain. Many produce ergot and other alkaloids, which are associated with both insect deterrence and livestock health issues. The levels of alkaloids and other endophyte characteristics are influenced by strain, host germplasm, and environmental conditions. Some strains in the right host germplasm can confer an advantage over biotic and abiotic stressors, thus acting as a maternally inherited desirable ‘trait’. Through seed production, these mutualistic endophytes do not transmit into 100% of the crop seed and are less vigorous than the grass seed itself. This causes stability and longevity issues for seed production and storage should the ‘trait’ be desired in the germplasm. This makes understanding the precise nature of the relationship vitally important to the plant breeder. These Epichloë endophytes cannot be ‘bred’ in the conventional sense, as they are asexual. Instead, the breeder may modulate endophyte characteristics through selection of host germplasm, a sort of breeding by proxy. This article explores, from a forage seed company perspective, the issues that endophyte characteristics and breeding them by proxy have on ryegrass breeding, and outlines the methods used to assess the ‘trait’, and the application of these through the breeding, production, and deployment processes. Finally, this article investigates opportunities for enhancing the utilisation of alkaloid-producing endophytes within pastures, with a focus on balancing alkaloid levels to further enhance pest deterrence and improving livestock outcomes.

scholarly journals A Design Approach of Optical Phased Array with Low Side Lobe Level and Wide Angle Steering Range

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 63
Author(s):  
Xinyu He ◽  
Tao Dong ◽  
Jingwen He ◽  
Yue Xu
Keyword(s):  
Phased Array ◽  
Phase Distribution ◽  
Beam Steering ◽  
Side Lobe ◽  
Design Approach ◽  
Optical Antennas ◽  
Side Lobe Level ◽  
Wide Angle ◽  
Spacing Distribution ◽  
Optical Phased Array

In this paper, a new design approach of optical phased array (OPA) with low side lobe level (SLL) and wide angle steering range is proposed. This approach consists of two steps. Firstly, a nonuniform antenna array is designed by optimizing the antenna spacing distribution with particle swarm optimization (PSO). Secondly, on the basis of the optimized antenna spacing distribution, PSO is further used to optimize the phase distribution of the optical antennas when the beam steers for realizing lower SLL. Based on the approach we mentioned, we design a nonuniform OPA which has 1024 optical antennas to achieve the steering range of ±60°. When the beam steering angle is 0°, 20°, 30°, 45° and 60°, the SLL obtained by optimizing phase distribution is −21.35, −18.79, −17.91, −18.46 and −18.51 dB, respectively. This kind of OPA with low SLL and wide angle steering range has broad application prospects in laser communication and lidar system.

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