JOSA year 18 no. 1 (42)
eISSN 2068-3049

 

CONTENTS

 

 

 

SECTION A – Mathematics

 

 

1.      APPLICATION OF ABOODH DIFFERENTIAL TRANSFORM METHOD ON SOME HIGHER ORDER PROBLEMS

(Jamshad Ahmad, Jawaria Tariq) / 5

2.    NUMERICAL COMPUTATION OF INITIAL VALUE PROBLEM BY VARIOUS TECHNIQUES

(Azizul Hasan) / 19

3.     COMPARISON RESULTS OF LINEAR DIFFERENTIAL EQUATIONS WITH FUZZY BOUNDARY VALUES

(Hulya Gultekin Citil) / 33

4.     NON-NEWTONIAN IMPROPER INTEGRALS

(Murat Erdogan, Cenap Duyar) / 49

5.     ON THE NATURAL LIFT CURVE AND THE BERTRAND MATE

(Evren Ergun, Mustafa Caliskan) / 75

6.     THE LAGUERRE TYPE d- ORTHOGONAL POLYNOMIALS

(Duriye Korkmaz-Duzgun, Esra Erkus-Duman) / 95

7.     A NOVEL METHOD FOR RELATIVISTIC ENERGY OF A UNIT VECTOR FIELD IN LIE GROUPS VIA GALILEAN TRANSFORMATION

(Talat Korpinar, Ridvan Cem Demirkol) / 107

8.     PADOVAN AND PELL-PADOVAN QUATERNIONS

(Dursun Tasci) / 125

9.     MODULES THAT HAVE A WEAK δ-SUPPLEMENT IN EVERY COFINITE EXTENSION

(Esra Ozturk Sozen, Senol Eren) / 133

10.     THE PREDICTION OF MANAGING CHANGE IN THE CONTEMPORARY ECONOMY BY USING SIMULATION AND MATHEMATICAL MODELING

(Gabriel Croitoru, Valentina Ofelia Robescu, Oana Oprisan, Duica Mircea, Dorin Claudiu Manolache) / 139

11.     ECONOMETRIC MODEL NECESSARY FOR ANALYSIS OF EXISTING CORRELATIONS BETWEEN HUMAN RESOURCES AND THE FINANCIAL PERFORMANCE OF THE ENTERPRISES

(Sorina-Geanina Stanescu, Alexandra Danila, Maria-Gabriela Horga) / 159

12.     USING BENFORD’S LAW IN THE ANALYSIS OF SOCIO-ECONOMIC DATA

(Dan-Marius Coman, Maria-Gabriela Horga, Alexandra Danila, Mihaela-Denisa Coman) / 167

13.     BOUNDS FOR THE LAPLACIAN EIGENVALUE OF GRAPHS USING 2-ADJACENCY

(Serife Buyukkose, Semiha Basdas Nurkahli) / 175

14.     ENRICHING THE ICT COMPETENCES OF UNIVERSITY STUDENTS - A KEY FACTOR FOR THEIR SUCCESS AS FUTURE TEACHERS

(Gabriel Gorghiu, Laura Monica Gorghiu, Lucia Pascale) / 183



SECTION B – Chemistry

 

 

1.      QUANTUM CHEMISTRY IN EVALUATION OF ANTAGONISM IN PLATELET AGGREGATION BETWEEN ADRENALINE AND CLOPIDOGREL

(Emilia Amzoiu, Manuel Amzoiu, Rodica Sirbu, Gabriela Stanciu, Mati Erand, Roxana Sandulovici) / 191

2.      DETERMINATION VISCOSITY INDEX IMPROVERS FOR MULTI-GRADE OIL OF COPOLYMER POLYETHYLENE-PROPYLENE

(Ioana Stanciu) / 197

3.      NON-LINEAR AND LINEARIZED IVIV CORRELATIONS FOR TABLETS CONTAINING A LARGE MOLECULE POLAR COMPOUND FRUITS EXTRACTS

(Mircioiu, Valentina Anuta, Gabriela Stanciu, Rodica Sirbu, Roxana Sandulovici) / 203

4.      COPPER TOLERANCE AND BIOACCUMULATION IN SEEDLINGS OF WHITE MUSTARD (SINAPIS ALBA L.)

(Dan Razvan Popoviciu, Ticuta Negreanu-Pirjol, Rodica Sirbu) / 211

5.      THE EFFECT OF DEHYDRATION ON BIOACTIVE COMPOUNDS IN SWEET RED PEPPER (CAPSICUM ANNUUM L.) OFFSHOOTS IN HYDROPONIC CULTURES WITH DIFFERENT LEVELS OF POLLUTANTS

(Elena Corina Popescu, Daniela Avram) / 219

6.      ECO-PRACT: A PROJECT FOR DEVELOPING THE RESEARCH COMPETENCES OF STUDENTS REGARDING THE MONITORING OF FLORISTIC COMPOSITION IN MOUNTAIN GRASSLANDS

(Daniel Dunea, Danut Tanislav, Alexandru Stoica, Petre Bretcan, George Muratoreanu, Loredana Neagu Frasin, Daniela Alexandrescu, Nicoleta Iliescu) / 225

6.      BIOETHICS APPROACH OF BIOSTATISTICS IN CLINICAL TRIALS. AVOID THE USE OF EXCESSIVE OR INADEQUATE NUMBERS OF RESEARCH SUBJECTS

(Mihai Manolache, Emin Cadar, Dinu Antonescu, Constantin Mircioiu, Irina Prasacu, Roxana Sandulovici) / 239



SECTION C – Physics

 

 

1.      UNIFIED STUDY OF ND4I BY LATTICE DYNAMICAL APPROACH

(Umesh Chandra Srivastava) / 247

2.      STUDIES REGARDING POLLUTING AGENTS IN BLACK SEA ALGAE

(Emin Cadar, Alef Mustafa, Aneta Tomescu, Melat Cherim) / 255

3.      X-RAY DIFFRACTION AND NANOINDENTATION CHARACTERIZATION OF BONE TISSUE AFFECTED BY SEVERE OSTEOARTHRITIS

(Cristina Mihaela Nicolescu, Marius Bumbac, Simona Mihai, Anca Irina Gheboianu, Mihai Constantin Balasa, Viviana Filip, Stefan Cuculici, Stefan Cristea, Cosmin Pantu) / 265

4.      MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION OF 301 STAINLESS STEEL WELDED JOINTS

(Aurora Poinescu, Simona Mihai, Ioan Alin Bucurica, Ioana Daniela Dulama, Sofia Teodorescu) / 275

5.      COMPARATIVE ANALYSIS OF BIPOLAR JUNCTION TRANSISTORS AND HETEROJUNCTION BIPOLAR TRANSISTORS USING MATLAB

(Gabriel Predusca, Iulia Monica Serban) / 283