scholarly journals REGIONAL BOUNDARY ASYMPTOTIC GRADIENT FULL ORDER OBSERVER VIA INTERNAL REGION

2020 ◽  
Vol 25 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Al-Saphory Reaheam
Keyword(s):  
Dynamical System ◽  
Usual Sense ◽  
Internal Region ◽  
Current State ◽  
Regional Boundary

The purpose of this paper is to deals with the problem of regional boundary asymptotic gradient full order observer (-observer) concept by using internal regional case. Thus, we study the relation between this notion and the corresponding asymptotic detectability and sensors. More precisely, various important results have been examined and explored concern an extension of an approach which enables to  reconstruct the gradient of current state from internal region. In addition, it has been shown that the characterization of -observability under which conditions  to be achieved.  Finally, we have illustrate that there is a dynamical system which does not represent the observer in the usual sense, but it could be interpreted as a -observer.

scholarly journals REGIONAL EXPONENTIAL GENERAL OBSERVABILITY IN DISTRIBUTED PARAMETER SYSTEMS

2015 ◽  
Vol 11 (4) ◽  
pp. 5167-5183
Author(s):  
Raheam A. M. Al-Saphory
Keyword(s):  
Dynamical System ◽  
Distributed Parameter Systems ◽  
Diffusion System ◽  
Distributed Parameter ◽  
Usual Sense ◽  
Two Dimensional

The purpose of this paper is to explore the concept of regional exponential general observability for a class of distributed parameter systems, in connection with the regional strategic sensors. Then, we give characterization of the strategic sensors in order that exponential regional general observability can be achieved. Furthermore, we apply these results to one and two dimensional systems, and various cases of sensors are considered and discussed. We also show that there exists a dynamical system for diffusion system is not exponentially general observable in the usual sense, but it may be regionally exponentially general observable.

scholarly journals Regional Boundary Asymptotic Gradient Full-Order Observer in Distributed Parabolic Systems

2020 ◽  
Vol 18 ◽  
pp. 28-45
Author(s):  
Raheam Al-Saphory ◽  
Zinah A. Khalid
Keyword(s):  
Dynamical System ◽  
Boundary Conditions ◽  
Domain Boundary ◽  
Original System ◽  
Parabolic Systems ◽  
Distributed Parameter ◽  
Usual Sense ◽  
Luenberger Observer ◽  
Different Types ◽  
Regional Boundary

The purpose of this paper is to explore the concept of the regional boundary asymptotic gradient full order observer (RBAGFO-observer) in connection with the characterizations of sensors structures. Then, we present various results related to different types of measurements, domains and boundary conditions for distributed parameter systems (DPSS) in parabolic systems problem.  The considered approach of this work is derived from Luenberger observer theory which is enable to estimate asymptotically the state gradient of the original system on a sub-region of the domain boundary  in order that the RBAGFO-observability notion to be achieved. We also show that there exists a dynamical system for the considered system is not BAGFO-observer in the usual sense, but it may be regional RBAGFO-observer.

scholarly journals Strategic Sensors and Regional Exponential Observability

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Raheam A. Mansor Al-Saphory
Keyword(s):  
Dynamical System ◽  
Diffusion System ◽  
Usual Sense ◽  
Two Dimensional

The aim of this paper is to introduce the concept of regional exponential observability in connection with the strategic sensors. Then, we give characterization of such sensors in order that regional exponential observability can be achieved. The obtained results are applied to two-dimensional systems, and various cases of sensors are considered. We also show that there exists a dynamical system for diffusion system which is not exponentially observable in the usual sense but it may be regionally exponentially observable.

Inverse problems for finite Jacobi matrices and Krein–Stieltjes strings

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Alexander Mikhaylov ◽  
Victor Mikhaylov
Keyword(s):  
Dynamical System ◽  
Inverse Problems ◽  
Jacobi Matrix ◽  
Jacobi Matrices ◽  
Unknown Parameters ◽  
Stieltjes String ◽  
Propagation Of Waves ◽  
Dynamic Inverse

Abstract We consider dynamic inverse problems for a dynamical system associated with a finite Jacobi matrix and for a system describing propagation of waves in a finite Krein–Stieltjes string. We offer three methods of recovering unknown parameters: entries of a Jacobi matrix in the first problem and point masses and distances between them in the second, from dynamic Dirichlet-to-Neumann operators. We also answer a question on a characterization of dynamic inverse data for these two problems.

Characterization of Beldi chicken and turkeys in rural poultry flocks of Morocco. Current state and future outlook

2001 ◽  
Vol 31 ◽  
pp. 87-95 ◽  
Author(s):  
K. Benabdeljelil ◽  
T. Arfaoui
Keyword(s):  
Rural Areas ◽  
Sexual Maturity ◽  
Phenotypic Variability ◽  
Future Outlook ◽  
Current State ◽  
Production Improvement ◽  
Rural Poultry

SummaryThe main characteristics of Beldi (meaning “native” in Arabic) poultry raised in rural areas were studied in the Khenifra Region through extensive surveys.Beldi chickens have large phenotypic variability. Black, brown, grey and white colours, pure or mixed, are frequently observed in chickens' featherings while turkeys are predominantly bronze. Plumage types were fairly homogeneous in both species. Single combs and dented combs were respectively predominant in chicken hens and roosters.Sexual maturity was reached at 154 days for roosters, 168 for hens in chicken, around 217 days for toms and 231 for turkey hens. The age at first egg averaged 5.8 months for hens and 8.4 months for turkey hens. The number of eggs laid per hen per year was 78 for chicken and 69 for turkey. Hatchability rate was 78 and 80 percent for chicken and turkeys, respectively. Diseases were the main cause of mortality, which could affect up to 77 percent of chicken flocks.Few preliminary urgent steps for the conservation of Beldi poultry are discussed with other production improvement proposals.

scholarly journals Charge-dependent flow as evidence of strong electromagnetic fields in heavy-ion collisions

2020 ◽  
Vol 35 (39) ◽  
pp. 2050324
Author(s):  
Andrea Dubla ◽  
Umut Gürsoy ◽  
Raimond Snellings
Keyword(s):  
Electromagnetic Fields ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Experimental Characterization ◽  
Ion Collisions ◽  
Current State ◽  
Theoretical Predictions ◽  
Dependent Flow

The extremely large electromagnetic fields generated in heavy-ion collisions provide access to novel observables that are expected to constrain various key transport properties of the quark-gluon plasma and could help solve one of the outstanding puzzles in QCD: the strong CP problem. In this review we present a brief overview of the theoretical and experimental characterization of these electromagnetic fields. After reviewing the current state, emphasizing one of the observables — the charge-dependent flow — we discuss the various discrepancies between the measurements and theoretical predictions. Finally, to help resolve the discrepancies, we suggest new measurements and theoretical ideas.

Exploring university–firm collaboration in teaching: A case study of co-creation

2021 ◽  
pp. 095042222110493
Author(s):  
Maria de Fátima Cruz ◽  
Mário Franco ◽  
Margarida Rodrigues
Keyword(s):  
Qualitative Approach ◽  
Future Research ◽  
Scientific Contribution ◽  
Educational Provision ◽  
Teaching Context ◽  
Documentary Analysis ◽  
Current State ◽  
The Subject

Recently, some authors have pointed out that the subject of university–firm collaboration (UFC) in the teaching context has been neglected. To fill this gap, and considering that educational provision is co-created with various stakeholders, this study aims to provide an exploratory characterization of the current state of UFC in the teaching context and to explore UFC as a mechanism for the co-creation of value. A qualitative approach was chosen, through a case study applied to one faculty at a Portuguese university. Data were obtained through documentary analysis and interviews with people in charge of this faculty. The results suggest that collaboration activities in this domain occur, albeit not systematically or in a planned way. The involvement of the current faculty direction in stimulating this collaboration is recognized, and the leaders see this phenomenon as a mechanism for co-creating value between firms and academia. As a practical contribution, the study proposes a set of recommendations to encourage such UFC. The scientific contribution arises from the presentation of a conceptual structure which explores the UFC phenomenon in the teaching context, bringing together the perspectives of collaboration and the co-creation of educational provision, as well as presenting a number of suggestions for future research.

OPTIMAL PERTURBATION OF UNCERTAIN SYSTEMS

2002 ◽  
Vol 02 (03) ◽  
pp. 395-402 ◽  
Author(s):  
BRIAN F. FARRELL ◽  
PETROS J. IOANNOU
Keyword(s):  
Dynamical System ◽  
Uncertain Systems ◽  
Initial Condition ◽  
Statistical Characterization ◽  
Optimal Perturbation ◽  
Physical Systems ◽  
Perturbation Problem ◽  
Ensemble Mean ◽  
Perturbation Growth

In studies of perturbation dynamics in physical systems, certain specification of the governing perturbation dynamical system is generally lacking, either because the perturbation system is imperfectly known or because its specification is intrinsically uncertain, while a statistical characterization of the perturbation dynamical system is often available. In this report exact and asymptotically valid equations are derived for the ensemble mean and moment dynamics of uncertain systems. These results are used to extend the concept of optimal deterministic perturbation of certain systems to uncertain systems. Remarkably, the optimal perturbation problem has a simple solution: In uncertain systems there is a sure initial condition producing the greatest expected second moment perturbation growth.

The growing role of structural mass spectrometry in the discovery and development of therapeutic antibodies

The Analyst ◽  
2018 ◽  
Vol 143 (11) ◽  
pp. 2459-2468 ◽  
Author(s):  
Yuwei Tian ◽  
Brandon T. Ruotolo
Keyword(s):  
Mass Spectrometry ◽  
State Of The Art ◽  
Therapeutic Antibodies ◽  
Critical Importance ◽  
Current State ◽  
Measurement Science ◽  
Structural Mass Spectrometry ◽  
Structural Mass

The comprehensive structural characterization of therapeutic antibodies is of critical importance for the successful discovery and development of such biopharmaceuticals, yet poses many challenges to modern measurement science. Here, we review the current state-of-the-art mass spectrometry technologies focusing on the characterization of antibody-based therapeutics.

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