Results 81 to 90 of about 1,797,437 (304)

Structured low-rank approximation and its applications

open access: yes, 2008
Fitting data by a bounded complexity linear model is equivalent to low-rank approximation of a matrix constructed from the data. The data matrix being Hankel structured is equivalent to the existence of a linear time-invariant system that fits the data ...
Markovsky, Ivan
core   +1 more source

A New Nonparametric Test of Cointegration Rank [PDF]

open access: yes
This paper suggests a new nonparametric testing procedure for determining the rank of nonstationary multivariate cointegrated systems. The asymptotic properties of the procedure are determined and a Monte Carlo study is carried out.Cointegration rank ...
George Kapetanios
core  

Social Functioning Within the First Years After Pediatric Brain Tumor Diagnosis and the Relationship With Family Psychosocial Risk

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survivors of pediatric brain tumors (PBTs) can experience long‐term social difficulties, impacting quality of life. Beyond medical and environmental factors, family psychosocial risk may play a role in social outcomes by shaping the caregiving environment and may provide intervention options.
Renske H. Houben   +4 more
wiley   +1 more source

Structures, Ranks and Minimal Distances of Cyclic Codes over Zp2+uZp2

open access: yesMathematics
Let p be a prime and Fp a finite field of order p. This paper investigates cyclic codes over the ring Rp2,u=Zp2+uZp2 of order p4, where the nilpotent element u satisfies u2=0 and pu≠0.
Sami H. Saif
doaj   +1 more source

Instituer la toute-puissance ? Les rapports d’autorité dans la France d’Ancien Régime

open access: yesTracés, 2009
This paper proposes to explore power mechanisms in the early modern French monarchy, through the relations induced by the disputes for precedence. Tensions were manifold between subjects who considered ranks as inheritances and were intent on preserving ...
Fanny Cosandey
doaj   +1 more source

Hierarchy of Families of Theories and Their Rank Characteristics

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2020
Studying families of elementary theories produces an information on behavior and interactions of theories inside families, possibilities of generations and their complexity.
S.V. Sudoplatov
doaj   +1 more source

Local rank tests in a multivariate nonparametric relationship [PDF]

open access: yes
Consider a multivariate nonparametric model where the unknown vector of functions depends on two sets of explanatory variables. For a fixed level of one set of explanatory variables, we provide consistent statistical tests, called local rank tests, to ...
Natércia Fortuna
core  

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

Ranking the rankings

open access: yes, 2014
In een academische wereld die steeds competitiever wordt, willen we graag weten wat ‘de beste’ universiteit is. Verschillende rankings bedienen ons op onze wenken, waaronder Times Higher Education, Sjanghai, QS en Leiden. De kritiek op die lijsten is echter niet mals, ook omdat universiteiten graag selectief shoppen in de resultaten.
Sikkema, A.   +3 more
openaire   +1 more source

AN EXHAUSTIVE COEFFICIENT OF RANK CORRELATION [PDF]

open access: yes
Rank association is a fundamental tool for expressing dependence in cases in which data are arranged in order. Measures of rank correlation have been accumulated in several contexts for more than a century and we were able to cite more than thirty of ...
Rosetta Lombardo, Agostino Tarsitano
core  

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