scholarly journals A Node Placement Algorithm Utilizing Mobile Nodes in WSN and IoT Networks

Telecom ◽  
2022 ◽  
Vol 3 (1) ◽  
pp. 17-51
Author(s):  
Natalie Temene ◽  
Charalampos Sergiou ◽  
Christiana Ioannou ◽  
Chryssis Georgiou ◽  
Vasos Vassiliou

The operation of the Internet of Things (IoT) networks and Wireless Sensor Networks (WSN) is often disrupted by a number of problems, such as path disconnections, network segmentation, node faults, and security attacks. A method that gains momentum in resolving some of those issues is the use of mobile nodes or nodes deployed by mobile robots. The use of mobile elements essentially increases the resources and the capacity of the network. In this work, we present a Node Placement Algorithm with two variations, which utilizes mobile nodes for the creation of alternative paths from source to sink. The first variation employs mobile nodes that create locally-significant alternative paths leading to the sink. The second variation employs mobile nodes that create completely individual (disjoint) paths to the sink. We then extend the local variation of the algorithm by also accounting for the energy levels of the nodes as a contributing factor regarding the creation of alternative paths. We offer both a high-level description of the concept and also detailed algorithmic solutions. The evaluation of the solutions was performed in a case study of resolving congestion in the network. Results have shown that the proposed algorithms can significantly contribute to the alleviation of the problem of congestion in IoT and WSNs and can easily be used for other types of network problems.

Author(s):  
Alexey Gerasimov ◽  
Evgeny Gromov ◽  
Oksana Grigor'eva

Improving the efficiency of agricultural production and the competitiveness of agricultural products is impossible without the creation of professional teams with a high level of productivity. The formation and development of the personnel potential of the agro-industrial complex comes to the fore in the light of ensuring the country’s food security and solving the problems of import substitution. The development of the industry relies more on the creation of a vertical education system, the development of rural territories, etc. Compilation of forecasts for the staffing of the agroindustrial complex will coordinate the efforts of educational institutions, business structures, and authorities in organizing the training and retraining of personnel for the agricultural sector.


2014 ◽  
Vol 26 (6) ◽  
pp. 639-649 ◽  
Author(s):  
Petter Stenmark ◽  
Johan Lilja

Purpose – The purpose of this paper is to introduce a methodology that can support the process of understanding and designing for the satisfaction of high-level needs in practice. The satisfaction of high-level needs has seldom been in focus when it comes to customer satisfaction surveys or the process of new product or service development. However, needs do occur on various levels, and the satisfaction of high-level needs actually appears to have the greatest potential for the creation of loyalty among customers and customer satisfaction. The satisfaction of high-level needs has furthermore been pointed out as a strategy for the creation of attractive quality. Design/methodology/approach – The paper is based on literature studies and the application of the Ideation Need Mapping (INM) methodology in a specific case. Findings – The paper presents the INM methodology that could be used for guiding product and service innovation in practice. More specifically, the methodology supports the process of understanding and designing for the satisfaction of high-level needs. Originality/value – This paper aims to contribute to envisioning and demonstrating how the understanding of, and design for, satisfaction of high-level needs can be done in practice.


2021 ◽  
Vol 9 (1) ◽  
pp. 69-73
Author(s):  
N. Kudrevatyh ◽  
K. Frolova

The development of the region directly depends on the work of economic entities, especially if they belong to the basic industries of specialization. Kuzbass was remains industrial region. Therefore, for its development in modern conditions of an unstable and constantly changing environment, a high level of competitiveness of enterprises of the fuel and energy complex is required, to achieve which it is necessary to develop relevant directions for increasing the economic security of enterprises. One of these areas is the creation of the Kuzbass coal and energy cluster in the region. The effectiveness of the functioning of such a structure largely depends on competent management. In this paper, a model for managing a regional coal-energy cluster proposed using the example of the Kemerovo region - Kuzbass.


Author(s):  
Karl Irikura

When computing the potential-energy curve of a diatomic molecule for predictive spectroscopy, high-level calculations are usually desired. The best calculations are expensive, so few points are usually available. The points are fitted to a continuous function, such as a polynomial. Ro-vibrational energy levels are then computed using the fitted function, and spectroscopic constants extracted. However, there may be problems with overfitting, with inadequate flexibility of the fitting function, or with dependence of results upon the choice of fitting function. More fundamentally, the fitting function is selected using aesthetics or convenience, instead of physics. Here we suggest using a lower-level, high-resolution ab initio potential as a guide. Instead of fitting the sparse, high-level data directly, the energy differences between the high-level points and the guiding potential are fitted. The results are improved even with an inexpensive guiding potential. This simple strategy involves little additional effort and can be recommended for routine use. It is similar to some interpolation strategies in the literature of polyatomic molecules. When the guiding potential extends beyond the high-level data, extrapolations are also improved.


Author(s):  
Rajneet Sodhi ◽  
Joshua U. Turner

Abstract This paper describes a strategy for representing tolerance information and assembly information in a feature-based design environment. The concept of designing with features is extended to incorporate the specification of tolerance information. This allows appropriate tolerancing strategies to be provided within the feature definitions themselves. Thus a closer connection is formed between features and the functional intent implicit in their use. The concept of designing with features is also extended to incorporate the specification of assembly information, through the use of assembly features which provide a high-level user interface for the creation and modeling of assemblies, and which handle the identification and creation of mating relations between components. Several examples of component and assembly design using this extended feature-based approach are presented.


2018 ◽  
Vol 12 (3) ◽  
pp. 129-135
Author(s):  
Annabelle Cumyn ◽  
Paul Gibson

Subsequent to the validation of a Canadian Curriculum blueprint for Obstetric Medicine (OM), the Canadian Consensus for a Curriculum in Obstetric Medicine (CanCOM) research group was approached to develop 20 cases to address gaps in clinical exposure during clinical rotations in OM. Forty-nine Obstetric Internists were identified and 43 confirmed their affiliation to the group. Participants (N = 22) reviewed the content of the CanCOM blueprint and identified curriculum content that they considered essential for a rotation for senior General Internal Medicine residents. This survey led to the creation of the CanCOM II essential content blueprint for General Internal Medicine. Following this step, a second subgroup of participants (N = 21) participated in a Delphi survey to identify the content that should be addressed by a teaching case for senior General Internal Medicine residents. A high-level of consensus was obtained for 13 topics and a moderate level for the 7 subsequent topics resulting in the creation of the CanCOM II clinical cases available at http://gemoq.ca/cancom-ii-clinical-case-databank/


1965 ◽  
Vol 16 (3) ◽  
pp. 205-220 ◽  
Author(s):  
D. J. Bell

SummaryThe necessary conditions of Clebsch and Weierstrass and of the multiplier rule in the calculus of variations, which arise from the study of the first variation of a function, are summarised. A further necessary condition associated with the second variation is stated. The latter condition is applied to two problems: (i) the determination of the thrust-time programme which maximises the altitude of a sounding rocket, (ii) the determination of the thrust direction programme for a rocket with a known propellant expenditure programme which yields a maximum range. In both problems it is found that the additional necessary condition is satisfied.


2010 ◽  
Vol 24 (05) ◽  
pp. 587-597 ◽  
Author(s):  
XIAO-HUA ZHOU

DNA's shape mostly lies on its total energy F. Its corresponding equilibrium shape equations can be obtained by classical variation method: letting the first energy variation δ(1)F = 0. Here, we not only provide the first variation δ(1)F but also give the second variation δ(2)F in planar case. Moreover, the general shape equations of DNA are abstained and a mistake in Zhang et al., [Phys. Rev. E70, 051902 (2004)] is pointed out.


2018 ◽  
Vol 4 (1) ◽  
pp. 18-29
Author(s):  
Ian Ritchie ◽  
Kathryn Henne

Purpose The purpose of this paper is to assess the institutional mechanisms for combating doping in high-level sport, including the trend toward using legalistic frameworks, and how they contribute to notions of deviance. Design/methodology/approach A historical approach informed by recent criminological adaptations of genealogy was utilized, using primary and secondary sources. Findings Three time periods involving distinct frameworks for combating doping were identified, each with their own advantages and limitations: pre-1967, post-1967 up until the creation of the World Anti-Doping Agency in 1999, and post-1999. Originality/value This study contextualizes the recent legalistic turn toward combating doping in sport, bringing greater understanding to the limitations of present anti-doping practices.


1972 ◽  
Vol 12 (57) ◽  
pp. 385 ◽  
Author(s):  
H Karunajeewa

Three laying strains of different bodyweights were fed two dietary levels of both protein and energy in a factorial experiment. The level of methionine in the diets was equalized. The laying performance of the lightweight strain was inferior to that of the medium and heavy-weight crossbred strains. The medium weight strain was the most efficient in converting feed, protein and calories to egg product. Birds fed 15 per cent crude protein diets gained less bodyweight and produced eggs with higher yolk colou scores than those fed the 17 per cent crude protein diets. The performance of birds fed diets with 2840 kcal ME kg-1 was better than those fed diets containing 266 kcal ME kg.-1 The high level of energy resulted in greater pigmentation of egg yolks and better conversion feed to egg product. There were significant interactions between dietary protein and energy levels on egg weight, and on inta of feed, calories and protein. Mortality was higher among birds fed the medium-energy diets than in those fed the high-energy diets a a high proportion of deaths was due to lymphoid leucosis.


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