Results 71 to 80 of about 231,868 (174)

The Structure of Unstable Power Systems [PDF]

open access: yes
A power system is modeled by an interaction form, the solution of which is called a settlement. By stability we mean the existence of some settlement for any preference profile.
Joseph Abdou
core  

The edge-forwarding index of orbital regular graphs

open access: yesDiscrete Mathematics, 1994
Let \(\Gamma\) denote a finite simple undirected graph on \(n\) vertices. A routing \(R\) is a set of \(n(n-1)\) paths in \(\Gamma\) such that each of the ordered pairs of distinct vertices is joined by one of them. The edge- forwarding index \(\Pi(\Gamma)\) is the minimum over all routings \(R\) of the maximum over all edges \(e\) of the number of ...
openaire   +2 more sources

Duality index of oriented regular hypermaps

open access: yes, 2011
By adapting the notion of chirality group, the duality group of $\cal H$ can be defined as the the minimal subgroup $D({\cal H}) \trianglelefteq Mon({\cal H})$ such that ${\cal H}/D({\cal H})$ is a self-dual hypermap (a hypermap isomorphic to its dual).
openaire   +2 more sources

Association of Family History, Body Mass Index, and Exercise Regularity with HbA1c Status in Type 2 Diabetes Melitus Patients

open access: yesMagna Medika
Background:  Urban life, especially in Surakarta, is easy to access and full of high-carbohydrate food and drink. This has increased unhealthy behavior and diets.
Riandini Aisyah, Nurhasan Agung Prabowo
doaj   +1 more source

On bounds for Castelnuovo’s index of regularity

open access: yesKyoto Journal of Mathematics, 1989
For coherent sheaves on a projective space Castelnuovo's index of regularity was first defined by D. Mumford [11], who attributes the idea to G. Castelnuovo. In fact, he used it to show that certain twists of a coherent sheaf are generated by its g lo b a l sec tio n s . In a m o re algebraic setting Castelnuovo's regularity was defined by D.
Achilles, Rüdiger, Schenzel, Peter
openaire   +2 more sources

Pterygium-induced corneal refractive changes

open access: yesIndian Journal of Ophthalmology, 2007
To study the effect of pterygium on corneal topography, a retrospective analysis of 151 eyes with primary pterygia was done. All cases underwent videokeratography preoperatively and one month postoperatively. Statistical analysis of average corneal power
Maheshwari Sejal
doaj  

Short sleep time may be the main reason for irregular breakfast to cause overweight—a cross-sectional study

open access: yesFrontiers in Nutrition
IntroductionIn recent years, the relationship between circadian rhythm and overweight and obesity has attracted the attention of many scholars.MethodsTo evaluate association between the duration of sleep and the regularity of breakfast and overweight.
Wei Yang   +7 more
doaj   +1 more source

THE INFLUENCE OF BODY MASS INDEX ON THE MENSTRUAL CYCLE IN ADOLESCENTS

open access: yesJurnal Berkala Epidemiologi
Background: Imbalanced nutritional status in adolescents can affect the menstrual cycle. In 2018, the WHO stated that as many as 80% of women in the world have irregular menstrual cycles.
Kurnia Dwi Artanti   +3 more
doaj   +1 more source

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