Details about Catalin Angelo Ioan

Access statistics for papers by Catalin Angelo Ioan.

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Short-id: pio23

Journal Articles

2022

1. Determination of Conditional Extremes of the Functions of Fundamental Symmetric Polynomials
   Acta Universitatis Danubius. OEconomica, 2022, (18(2)), 202-212
   Also in Acta Universitatis Danubius. OEconomica, 2022, (18(1)), 211-223 (2022)

2020

2. A Method of Determining Divisibility with Any Natural Number
   Acta Universitatis Danubius. OEconomica, 2020, (16(2)), 305-362
3. An Equilibrium Model with Applications for some of the South American countries
   Acta Universitatis Danubius. OEconomica, 2020, (16(1)), 139-194
4. The Dependence of Net Average Wage on Labour Productivity in Romania
   EuroEconomica, 2020, (2(39)), 7-47 View citations (1)

2019

5. An Equilibrium Model with Applications for some of the Asian and Australia-Oceania Countries - Part Two
   Acta Universitatis Danubius. OEconomica, 2019, (15(6)), 302-456
6. An Equilibrium Model with Applications for the European Union Countries
   Acta Universitatis Danubius. OEconomica, 2019, (15(1)), 265-409
7. Global Education Level Analysis - Part four
   Acta Universitatis Danubius. OEconomica, 2019, (15(2)), 298-430

2018

8. An Analysis of Two Types of Regressions for the same Dataset
   Acta Universitatis Danubius. OEconomica, 2018, (14(3)), 312-318
9. Analysis of Natural Movement of Romanian Population During 2007-2014 - IV
   Acta Universitatis Danubius. OEconomica, 2018, (14(1)), 243-254
   Also in Acta Universitatis Danubius. OEconomica, 2017, (13(5)), 253-400 (2017)
   Acta Universitatis Danubius. OEconomica, 2017, (13(4)), 53-208 (2017)
   Acta Universitatis Danubius. OEconomica, 2017, (13(6)), 5-130 (2017)
10. Analysis of the Main Economic Indicators of the World
    Acta Universitatis Danubius. OEconomica, 2018, (14(2)), 195-461
11. Demographics and Poverty Analysis for Developing Countries and Regions of the World for Developing Countries and Regions of the World – Part Three
    Acta Universitatis Danubius. OEconomica, 2018, (14(6)), 344-495
12. Demographics and Poverty Analysis for Developing Countries and Regions of the World for Developing Countries and Regions of the World – Part Two
    Acta Universitatis Danubius. OEconomica, 2018, (14(5)), 535-716
13. Global Education Level Analysis - Part three
    Acta Universitatis Danubius. OEconomica, 2018, (14(7)), 272-427
14. Global Education Level Analysis - Part two
    Acta Universitatis Danubius. OEconomica, 2018, (14(6)), 103-280
15. Labor Analysis for Developing Countries and Regions of the World – Part One
    Acta Universitatis Danubius. OEconomica, 2018, (14(5)), 299-534
16. Labor Analysis for Developing Countries and Regions of the World–Part Two
    Acta Universitatis Danubius. OEconomica, 2018, (14(7)), 428-654

2017

17. Again about Andrica’s Conjecture
    Acta Universitatis Danubius. OEconomica, 2017, (13(3)), 207-212 View citations (1)
18. Some Aspects of Production Functions Differential Geometry
    Acta Universitatis Danubius. OEconomica, 2017, (13(2)), 248-259
19. The Analysis of Dependence of Household Deposits and Loans from the Money Supply
    Acta Universitatis Danubius. OEconomica, 2017, (13(2)), 185-202
20. The Relationship between Spatial Interdependencies in the European Union and the Trade - II
    Acta Universitatis Danubius. OEconomica, 2017, (13(1)), 51-144
    Also in Acta Universitatis Danubius. OEconomica, 2016, (12(6)), 5-118 (2016) View citations (1)

2016

21. A Mathematical Model of Working Time and Leisure
    EuroEconomica, 2016, (2(35)), 41-47 View citations (1)
22. An Analysis of a Duopoly with Incomplete Information
    Acta Universitatis Danubius. OEconomica, 2016, (12(5)), 5-18
23. On Certain Conditions for Generating Production Functions - I
    Acta Universitatis Danubius. OEconomica, 2016, (12(1)), 129-150
24. The Determination of Spatial Interdependencies in the European Union
    Acta Universitatis Danubius. OEconomica, 2016, (12(4)), 133-152 View citations (2)
25. The Role of Fashion Style in Creating the First Impression
    Acta Universitatis Danubius. OEconomica, 2016, (12(4)), 254-274

2015

26. A Conjecture Concerning Prime Numbers
    Acta Universitatis Danubius. OEconomica, 2015, (11(2)), 242-245
27. A New Approach to Utility Function
    Acta Universitatis Danubius. OEconomica, 2015, (11(2)), 194-223 View citations (3)
28. A Study of Continued Fractions Using Software Tools – I
    The Journal of Accounting and Management, 2015, (1), 23-27
29. A Study of Integers Using Software Tools – II
    The Journal of Accounting and Management, 2015, (3), 69-74
    Also in Acta Universitatis Danubius. OEconomica, 2015, (11(3)), 197-202 (2015)
    Acta Universitatis Danubius. OEconomica, 2015, (11(4)), 41-44 (2015)
30. About Andrica’s Conjecture
    Acta Universitatis Danubius. OEconomica, 2015, (11(1)), 149-153 View citations (1)
31. About the Non-Research Methodology
    The Journal of Accounting and Management, 2015, (2), 96-99
32. Essay - About rigor, research and teaching in Romanian economy
    The Journal of Accounting and Management, 2015, (1), 35-41
33. Evolution and consequences of economic crisis in Romania
    EuroEconomica, 2015, (2(34)), 161-189 View citations (1)
34. Stackelberg Model for Linear Marginal Costs
    Acta Universitatis Danubius. OEconomica, 2015, (11(5)), 67-71
35. The Complete Theory of Cobb-Douglas Production Function
    Acta Universitatis Danubius. OEconomica, 2015, (11(1)), 74-114 View citations (2)
36. The Complete Theory of Generalized CES Production Function
    The Journal of Accounting and Management, 2015, (2), 15-37

2014

37. A Rational Production Function
    Acta Universitatis Danubius. OEconomica, 2014, (10(4)), 197-207
38. A Type of a Rational Production Function
    Acta Universitatis Danubius. OEconomica, 2014, (10(5)), 59-67
39. About short-term costs and long-term costs
    The Journal of Accounting and Management, 2014, (2), 61-68
40. An analysis of the substitution effect and of revenue effect in the case of the consumer’s theory provided with an Allen utility function
    The Journal of Accounting and Management, 2014, (3), 15-19
41. Education and Research Institutions The Professional Orientation Analysis of High School Students
    Acta Universitatis Danubius. OEconomica, 2014, (10(2)), 265-275
42. Generalized Cobb-Douglas Function for Two Inputs and Linear Elasticity
    Acta Universitatis Danubius. OEconomica, 2014, (10(6)), 58-66
43. Generalized Cobb-Douglas function for three inputs and linear elasticity
    The Journal of Accounting and Management, 2014, (2), 17-22
44. Mathematics and Microeconomics
    Acta Universitatis Danubius. OEconomica, 2014, (10(2)), 100-108
45. The localization problem
    EuroEconomica, 2014, (2(33)), 153-161

2013

46. A Mathematical Model of an Open Economy with Applications in Romania
    Acta Universitatis Danubius. OEconomica, 2013, (9(5)), 103-170
47. An Equilibrium Model for an Open Economy. Romania’s Case
    Acta Universitatis Danubius. OEconomica, 2013, (9(1)), 102-125
48. On Homogeneous Functions
    Acta Universitatis Danubius. OEconomica, 2013, (9(2)), 166-175
49. Romania's Financial Market and Foreign Trade Impaction
    Acta Universitatis Danubius. OEconomica, 2013, (9(3)), 100-115
50. The Evolution of GDP in USA Using Polynomial Regression Analysis
    Acta Universitatis Danubius. OEconomica, 2013, (9(5)), 61-73
51. The Open Society, Institutions and Economic Performance
    EuroEconomica, 2013, (2(32)), 175-180
52. The Reduction of Quadratic Forms to the Normal Form with Applications for Production Functions
    Acta Universitatis Danubius. OEconomica, 2013, (9(2)), 120-152
53. The behavior of a polynomial regression under a variables transformation
    The Journal of Accounting and Management, 2013, (2), 5-18
54. The evolution of GDP in USA using cyclic regression analysis
    The Journal of Accounting and Management, 2013, (1), 21-47

2012

55. An Analysis of the Substitution Effect and of Revenue Effect in the Case of the Consumer’s Theory Provided with a CES Utility Function
    Acta Universitatis Danubius. OEconomica, 2012, (1(1)), 164-175
56. An Analysis on the Consumer Demand Dependence Relative to the Disposable Income for Romania during 2001-2011
    Acta Universitatis Danubius. OEconomica, 2012, (8(6)), 113-122
57. An Analysis on the Money Demand Dependence Relative to GDP and the Interest Rate for Romania during 2001-2011
    Acta Universitatis Danubius. OEconomica, 2012, (8(6)), 146-155
58. An analysis on taxes dependence relative to GDP for Romania during 2001-2011
    The Journal of Accounting and Management, 2012, (3), 13-19
59. An analysis on the investment demand dependence relative to GDP and the interest rate for Romania during 2001-2011
    The Journal of Accounting and Management, 2012, (2), 23-31
60. An analysis on the net export dependence relative to GDP and the consumer demand for Romania during 2001-2011
    EuroEconomica, 2012, (4(31)), 98-105
61. Aspects of Price Discrimination in the Monopoly
    Acta Universitatis Danubius. OEconomica, 2012, (3(3)), 101-112
62. Considerations on the Hicks Effect for N Consumer’s Goods
    EuroEconomica, 2012, (2(31)), 116-126
63. Discussions on n Substitutable Goods Production and Consumption
    Acta Universitatis Danubius. OEconomica, 2012, (4(4)), 168-176
64. General Considerations on the Oligopoly
    Acta Universitatis Danubius. OEconomica, 2012, (3(3)), 113-135
65. Intellectual Property Rights in the Era of “Information Society”
    Acta Universitatis Danubius. OEconomica, 2012, (2(2)), 169-174
66. On the General Theory of Production Functions
    Acta Universitatis Danubius. OEconomica, 2012, (5(5)), 225-238 View citations (3)
67. The Complete Solution of the Core-Periphery Model for two Regions Using Successive Approximations
    Acta Universitatis Danubius. OEconomica, 2012, (1(1)), 95-106
68. The Consumer's Budget from a Geometrically Point of View
    The Journal of Accounting and Management, 2012, (1), 23-30
69. The Consumer’s Behavior after the Preferences Nature
    Acta Universitatis Danubius. OEconomica, 2012, (2(2)), 127-138 View citations (1)
70. The Equilibrium Analysis of a Closed Economy Model with Government and Money Market Sector - II
    Acta Universitatis Danubius. OEconomica, 2012, (5(5)), 177-186
    Also in Acta Universitatis Danubius. OEconomica, 2011, (5(5)), 126-142 (2011) View citations (1)
71. The Problem of Efficiency of the Consumption or Production
    Acta Universitatis Danubius. OEconomica, 2012, (4(4)), 117-125

2011

72. A A method of choice of the best alternative in the multiple solutions case in the Games Theory
    The Journal of Accounting and Management, 2011, (1), 5-8 View citations (6)
73. A generalization of a class of production functions
    Applied Economics Letters, 2011, 18, (18), 1777-1784 View citations (6)
74. A method of choice of the importance coefficients in the Electre method
    The Journal of Accounting and Management, 2011, (2), 5-12
75. An adjustment of the Electre method for the case of intervals
    The Journal of Accounting and Management, 2011, (2), 53-61
76. Analysis of the Evolution of the Gross Domestic Product by Means of Cyclic Regressions
    Acta Universitatis Danubius. OEconomica, 2011, (4(4)), 114-126
77. In this article, we will carry out an analysis on the regularity of the Gross Domestic Product of a country, in our case the United States. The method of analysis is based on the consideration of the development in the Fourier series of a function and testing in terms of the average absolute error of the nearest polynomial Fourier of real data are considered. The obtained results show a cycle for 13 years, the average absolute error being 3.69%. The method described allows an prognosis on shortterm trends in GDP
    Acta Universitatis Danubius. OEconomica, 2011, (4(4)), 142-157
78. On The Nature of Level Hyper Surfaces in the Economic Theory
    Acta Universitatis Danubius. OEconomica, 2011, (5(5)), 143-149
79. The E-Learning Limits
    Acta Universitatis Danubius. OEconomica, 2011, (1(1)), 138-159
80. The Extreme of a Function Subject to Restraint Conditions
    Acta Universitatis Danubius. OEconomica, 2011, (3(3)), 203-207 View citations (9)
81. Trends and Developments in Romania's Trade Balance in the Period 2006-2010
    Acta Universitatis Danubius. OEconomica, 2011, (3(3)), 174-192

2010

82. A Generalization of Some Production Functions
    Acta Universitatis Danubius. OEconomica, 2010, (1(1)), 110-123
83. A Method of Determination of an Acquisition Program in Order to Maximize the Total Utility Using Linear Programming in Integer Numbers
    Acta Universitatis Danubius. OEconomica, 2010, (1(1)), 124-128
84. A Method of Determination of an Acquisition Program of N Goods in Order to Maximize the Total Utility
    Acta Universitatis Danubius. OEconomica, 2010, (2(2)), 106-113 View citations (2)
85. The Substitution and the Revenue Effects for a Cobb-Douglas Utility Function
    Economics and Applied Informatics, 2010, (2), 87-94 View citations (1)
86. Two Methods of Determination of an Acquisition Program in Integer Numbers
    Acta Universitatis Danubius. OEconomica, 2010, (4(4)), 125-130 View citations (1)

2009

87. New Assignation Methods of Workers on Jobs
    Acta Universitatis Danubius. OEconomica, 2009, (1(1)), 186-188
88. THE SEQUENCE OF TWO INSTALLATIONS WITHOUT INITIAL DELIVERANCE TIMES
    EuroEconomica, 2009, (2(23)), 5-12
89. The Production Functions from the Point of View of 3- Dimensional Geometry
    Acta Universitatis Danubius. OEconomica, 2009, (1(1)), 7-15 View citations (1)

2008

90. A SOLVING METHOD OF TWO ECONOMICAL PROBLEMS USING LINEAR PROGRAMMING IN INTEGER NUMBERS
    EuroEconomica, 2008, (2(21)), 49-53

2007

91. APPLICATIONS OF THE SPACE DIFFERENTIAL GEOMETRY AT THE STUDY OF PRODUCTION FUNCTIONS
    EuroEconomica, 2007, (18), 30-37 View citations (3)
92. The sequence operation in production flows
    Acta Universitatis Danubius. OEconomica, 2007, (1(1)), 16-20

2006

93. Degenerate Foliations in Semi-Riemannian Manifolds
    Acta Universitatis Danubius. OEconomica, 2006, (1(1)), 11-76

2005

94. A General Type of Almost Contact Manifolds
    Acta Universitatis Danubius. OEconomica, 2005, (1(1)), 41-54
95. Degenerate Foliations in Sasakian Semi-Riemannian Manifolds
    Acta Universitatis Danubius. OEconomica, 2005, (1(1)), 33-40