https://repository.utm.md/handle/5014/6097 2026-04-19T19:21:57Z 2026-04-19T19:21:57Z SARANCIUC, Dorian https://repository.utm.md/handle/5014/6558 2019-11-11T10:11:58Z 2011-01-01T00:00:00Z

O metodă de construire a tuturor acoperirilor neredundante existente de dependenţe funcţionale SARANCIUC, Dorian În articol este abordată problema construirii tuturor acoperirilor neredundante existente ale unei mulţimii de dependenţe funcţionale. Aceasta este posibil, utilizînd ca bază un algoritm procedural conventional, prin permutarea dependenţelor în mulţimea initială şi calcularea acoperirii pentru fiecare mulţime nou formată. Însăpentru o mulţime cu n dependenţe numărul permutărilor pesibile este n!, ceea ce ar duce la creşterea enormă a timpului de calcul. A fost propusă o metodă de a minimiza numărul permutărilor, care constă în eliminarea din lista permutărilor a dependenţelor neesenţiale. Au fost propuse criteriile pentru determinarea dependenţelor neesenţiale, formulate în baza noţiunilor de atribute neesenţiale şi recuperabile. A fost arătată eficienţa metodei propuse în baza unor exemple. A fost realizat algoritmul de căutare a tuturor acoperirilor neredundante existente într-un limbaj procedural şi estimat timpul de calcul.

2011-01-01T00:00:00Z LUPAN, O. CHOW, L. RAILEAN, S. SONTEA, V. POCAZNOI, I. https://repository.utm.md/handle/5014/6557 2019-11-11T10:06:55Z 2011-01-01T00:00:00Z

Magnesium and Cadmium-alloyed Zinc Oxide Nanowires for Device Applications LUPAN, O.; CHOW, L.; RAILEAN, S.; SONTEA, V.; POCAZNOI, I. We present an experimental approach to study Zn1-xMgxO and Zn1-xCdxO nanowires (NWs) and their integration in LED structures. Zn1-xMgxO and Zn1-xCdxO NWs were deposited on p- GaN substrates. Abstract

2011-01-01T00:00:00Z PROFIR, Aurelia PREPELIŢĂ, Laura DAMASCHIN, Roman YANG, Binglin https://repository.utm.md/handle/5014/6554 2021-09-21T13:16:02Z 2011-01-01T00:00:00Z

Patient-Specific Modeling by 2D and 3D Visual Membrane Petri Nets PROFIR, Aurelia; PREPELIŢĂ, Laura; DAMASCHIN, Roman; YANG, Binglin A Patient-specific modeling of the glycemia level in patients with type 1 diabetes mellitus by using 2D and 3D Visual Membrane Petri Nets software applications is described. This model allows to calculate the glycemia level in different parts of the human cardiovascular system (systemic circulation, pulmonary circulation, heart, coronary circulation). Our model reflects glycemia level in veins for the following cases: health condition and both the hepatic insulin-resistance and hepatic insulinsensitivity in patients with type 1 diabetes. It was shown that the hepatic insulin resistance in type 1 diabetes have a protective effect on the progression of microangiopathy in insulin-independent tissues and it is an compensatory phenomenon, but not a pathological one.

2011-01-01T00:00:00Z PROFIR, Aurelia DAMASCHIN, Roman PREPELITA, Laura YANG, Binglin https://repository.utm.md/handle/5014/6551 2021-09-21T13:14:31Z 2011-01-01T00:00:00Z

Membrane Petri Nets Model Optimization using Methods of Functional Locations and Dynamic Priorities PROFIR, Aurelia; DAMASCHIN, Roman; PREPELITA, Laura; YANG, Binglin To simplify visual membrane Petri nets models and to minimize the computation time we propose two methods: a method of continuous functional locations and a method of dynamic priority functions for transitions involved in an structural conflict place transition systems. The method of functional locations allows a substantial reduction of the number of components of 3D Visual Membrane Petri Nets models. The method of dynamic marking-dependent priorities allows optimizing models that describe basic cellular functions (including degradation processes of proteins, enzymes, gene copies, etc.). As examples, a model of membrane oscillations and the model of SOS cellular response to environmental stimuli are optimized by using new proposed methods.

2011-01-01T00:00:00Z