3-D-MIMO With Massive Antennas Paves the Way to 5G Enhanced Mobile Broadband: From System Design to Field Trials

2017 ◽  
Vol 35 (6) ◽  
pp. 1222-1233 ◽  
Author(s):  
Guangyi Liu ◽  
Xueying Hou ◽  
Jing Jin ◽  
Fei Wang ◽  
Qixing Wang ◽  
...  
Keyword(s):  
System Design ◽  
Field Trials ◽  
Mobile Broadband ◽  
Massive Antennas ◽  
The Way

SUAV WARFARE IN THE NEXT DECADE

2021 ◽  
Vol 17 (1) ◽  
pp. 103-110
Author(s):  
Rodríguez YAGO
Keyword(s):  
System Design ◽  
Unmanned Aerial Vehicles ◽  
Aerial Vehicles ◽  
The Future ◽  
The Way

Abstract: In this document we have focused on researching the so-called "Small Unmanned Aerial Vehicles" in order to find out what their main characteristics are and how they may affect the way we fight in the future. To achieve our goal, we have established several subjects relevant to any fighting system: design, manufacturing, tactical capabilities, logistics, recent experiences. After analyzing them we have come to a series of conclusions.

An Internal Turret Mooring System Design Under Squalls Off The Coast of West Africa

2015 ◽  
Author(s):  
Xiaochuan Yu ◽  
Liqing Huang
Keyword(s):  
Wind Speed ◽  
West Africa ◽  
System Design ◽  
Mooring System ◽  
Wind Condition ◽  
Low Level ◽  
Wind Speeds ◽  
Line Design ◽  
The Way ◽  
Tandem Offloading

Squalls are intense, low-level winds associated with storms, and they always begin suddenly and last for minutes. They are characterized by large variation of wind speeds. Squalls control the design wind condition for floating production, storage and offloading systems (FPSOs) off the coast of West Africa. In this paper, an internal turret mooring system is designed to study the effects of squalls on the prediction of extreme tensions and offsets, which will be compared with the results from the way of using constant wind speed. Various statistic values of extreme tensions will be calculated and applied in the design. The differences between these values will also be discussed. Finally, the tandem offloading analysis is also performed in order to calculate the extreme hawser loads for the purpose of hawser line design.

scholarly journals RF Driven 5G System Design for Centimeter Waves

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Pekka Pirinen ◽  
Harri Pennanen ◽  
Ari Pouttu ◽  
Tommi Tuovinen ◽  
Nuutti Tervo ◽  
...  
Keyword(s):  
Radio Frequency ◽  
System Design ◽  
Statistical Modeling ◽  
Frequency Band ◽  
Radio Channel ◽  
Concept Development ◽  
Measurement Campaign ◽  
Mobile Broadband ◽  
Air Interface ◽  
Complex Process

5G system design is a complex process due to a great variety of applications and their diverse requirements. This article describes our experiences in developing a centimeter waves mobile broadband concept satisfying future capacity requirements. The first step in the process was the radio channel measurement campaign and statistical modeling. Then the link level design was performed tightly together with the radio frequency (RF) implementation requirements to allow as large scalability of the air interface as possible. We started the concept development at 10 GHz frequency band and during the project World Radiocommunication Conference 2015 selected somewhat higher frequencies as new candidates for 5G. Thus, the main learning was to gain insight of interdependencies of different phenomena and find feasible combinations of techniques and parameter combinations that might actually work in practice, not only in theory.

scholarly journals Cultural, Economic and Societal Impacts on Users’ Behaviour and Mobile Broadband Adoption Trends

2017 ◽  
Vol 1 (1) ◽  
pp. 34-44 ◽  
Author(s):  
Mahdi H. Miraz ◽  
Maaruf Ali ◽  
Peter S. Excell
Keyword(s):  
Technology Diffusion ◽  
Global Economy ◽  
Cultural Economic ◽  
Diverse Range ◽  
Mobile Broadband ◽  
The United Kingdom ◽  
Behavioural Patterns ◽  
Ease Of Access ◽  
The Many ◽  
The Way

The diverse range of Internet enabled devices both mobile and fixed has not only impacted the global economy but the very fabric of human communications and lifestyles. The ease of access and lowered cost has enabled hitherto diametrically opposed people to interact and influence each other globally. The consequence of which is the dire need to address the way culture affects interaction with information systems across the world. The many facets of which encompasses human behaviour, socio-economic and cultural factors including lifestyles and the way of interaction with the information system. The study group involved participants from Bangladesh and the United Kingdom to ascertain the users’ behavioural patterns and mobile broadband technology diffusion trends.

Flow Rates and Pressure Distributions Produced by Radon Sumps

1994 ◽  
Vol 56 (1-4) ◽  
pp. 175-178
Author(s):  
A. Cripps
Keyword(s):  
Computational Model ◽  
Field Trials ◽  
Remedial Measures ◽  
Soil System ◽  
Flow Rates ◽  
Pressure Distributions ◽  
Adequate Information ◽  
The Way

Abstract Radon sumps are widely used a remedial measures to reduce radon levels in houses and other buildings. In many cases they are very effective, but they do not always succeed. BRE have been working on models of the behaviour of sumps in order to understand better the way they operate, and why they might fail. This paper reports on results from a computational model of radon sumps, and compares its predictions with those from BRE field trials. A resistance to flow is used to characterise the behaviour of the whole sump, house and soil system, and a prediction for the likely heat cost of running a sump system is made. The results indicate that models can be useful in examining the effectiveness of sumps, and in optimising their design. However, without adequate information about the soil below a house it is not possible to predict with accuracy the way a sump would operate. This work shows we can characterise the behaviour of a sump system with a simple resistance to flow, and this should prove useful in choosing appropriate size fan for sumps. The results also enable us to predict the likely cost in heating terms of the additional ventilation caused by the sump system.

Design and Manufacture of the Prototype of an Innovative Pump for ‘Proof of Concept’ Test

2014 ◽  
Vol 607 ◽  
pp. 536-541
Author(s):  
Noor A. Ahmed ◽  
Terry R. Day
Keyword(s):  
Laboratory Testing ◽  
Field Trials ◽  
Proof Of Concept ◽  
Efficiency Gains ◽  
Design And Manufacture ◽  
Vortex Diffusion ◽  
The Way

The design and manufacture of an innovative pump conceived based on vortex diffusion is described in this paper. The authors believe the pump has the potential of achieving higher efficiency gains than those currently available. A prototype was, therefore, manufactured for laboratory testing and eventual field trials and commercial manufacture. The success of the concept in achieving the goals, will pave the way towards significant savings in fuel expenditure through lower pumping costs.

scholarly journals On methods and tools for rigorous system design

2021 ◽  
Author(s):  
Simon Bliudze ◽  
Panagiotis Katsaros ◽  
Saddek Bensalem ◽  
Martin Wirsing
Keyword(s):  
System Design ◽  
Software Systems ◽  
A Posteriori ◽  
Domain Specific ◽  
Alternative Approach ◽  
Level Model ◽  
High Level ◽  
The Way

AbstractFull a posteriori verification of the correctness of modern software systems is practically infeasible due to the sheer complexity resulting from their intrinsic concurrent nature. An alternative approach consists of ensuring correctness by construction. We discuss the Rigorous System Design (RSD) approach, which relies on a sequence of semantics-preserving transformations to obtain an implementation of the system from a high-level model while preserving all the properties established along the way. In particular, we highlight some of the key requirements for the feasibility of such an approach, namely availability of (1) methods and tools for the design of correct-by-construction high-level models and (2) definition and proof of the validity of suitable domain-specific abstractions. We summarise the results of the extended versions of seven papers selected among those presented at the $$1\mathrm {st}$$ 1 st and the $$2\mathrm {nd}$$ 2 nd  International Workshops on Methods and Tools for Rigorous System Design (MeTRiD 2018–2019), indicating how they contribute to the advancement of the RSD approach.

Comparison of EC and ULV formulations on Heliothis in cotton in Australia

1982 ◽  
Vol 11 (3) ◽  
pp. 123-126 ◽  
Author(s):  
R. A. H. Davies ◽  
R. Merrett ◽  
N. A. Mclaren ◽  
K. J. Cameron
Keyword(s):  
Physiological Activity ◽  
Field Trials ◽  
Synthetic Pyrethroid ◽  
Pyrethroid Insecticides ◽  
Water Based ◽  
Low Volume ◽  
Ec Formulations ◽  
The Way

The success of insecticides depends not only on their intrinsic physiological activity but on the way in which they are formulated. In recent field trials in Australia synthetic pyrethroid insecticides formulated as water-based emulsifiable concentrates (EC) were compared with oil-based ultra low volume (ULV) formulations for control of bollworm (Heliothis) on cotton. Contrary to expectation, EC formulations gave the better results under typical conditions for very low volume spraying in Australia.

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