Marian Cristescu | "Lucian Blaga" University of Sibiu (original) (raw)
Papers by Marian Cristescu
Serdica Journal of Computing, 2019
Manufacturing enterprises sometimes cannot accept orders from corporate customers because their m... more Manufacturing enterprises sometimes cannot accept orders from corporate customers because their manufacturing capacity is busy. To solve this problem this article proposes some approaches for information sharing with downstream partners of supply chains. The main approach is sending an XML file with free capacity by days from a manufacturing enterprise to its corporate customers. In this case corporate customers who send orders to the manufacturer are sure that their orders will be accepted and carried out. The practical implication of the proposed method is for manufacturing enterprises who have a lot of orders and sometimes reject some of the orders due to the lack of free manufacturing capacity. ACM Computing Classification System (1998): Y.1.0, Z.2.1. Mathematics Subject Classification - MSC2020: 03-04, 28-04, 33-04, 68M14, 68P05.
The paradigm of object oriented is successfully applied in many software projects and the use of ... more The paradigm of object oriented is successfully applied in many software projects and the use of the languages object oriented widely spread nowadays. The object oriented technologies diminish or eliminate some typical problems of the procedural software, but on the other hand they can introduce new problems wich have as a result classes of defects difficult to be adressed by means of traditional technologies of testing. In particular, the defects depended of the state, are to be meet more frequently in the object oriented programming systems rather than the procedural ones; almost all object have an associated state, and the behavior of the object. Such defects can hardly be decovered because they create anomalies only when the objects are used in particular states.
Informatică economică, 2012
In any company, no matter the dimensions, a very important aspect is the selection of human resou... more In any company, no matter the dimensions, a very important aspect is the selection of human resources and establishing a constant correspondence between the particularities of the job opened and candidate's profile. Especially in big companies, engaged in big projects, and which must be performed in a fast rhythm, the recruitment process is in a continuum progress, due to the demand rhythm, the work force mobility and to assuring a diversify knowledge data base. Experience has shown that a selection made in advance in the candi-dates CV's who apply for a scientific position, before programming the technical interview with them, is a real time saving for both the employers and the candidatesKeywords: Distributed Application, Personal Recruitment, Management, Human ResourcesIntroductionIn the process of filtering the candidates for an interview, HR department representa-tives are involved and even the RD depart-ment who is interested in hiring new candi-dates for specific jobs...
Although, direct economic information’s are, in general, difficult to obtain through reason conne... more Although, direct economic information’s are, in general, difficult to obtain through reason connected of confidentialities. Currently is observe the relation cost-benefit in the case of the using the software engineering reliability can be from one to six or upwards. More, the software engineering reliability it was credited with the incidents abatement considering to security software related, as well as the costs of servicing.
The reliability of the software represents one of the most important attributes of software quali... more The reliability of the software represents one of the most important attributes of software quality, and the estimation of the reliability of the software is a problem hard to solve with accuracy. Nevertheless, in order to manage the quality of the software and of the standard practices in an organization, it is important to achieve an estimation of the reliability as accurate as possible. In the present work there are described the principles and techniques which underlie the estimation of the reliability of the software, starting from the definition of the concepts which express the attributes of software quality. It is taken into account the issue of the estimation of a software part. The presumed objective of the estimation of the reliability consists in the analysis of the risk and of the reliability of the software-based systems. Supposedly, a documented opinion of the expert exists regarding the reliability of the software and an update of the defined estimation of the reliab...
THERMOPHYSICAL BASIS OF ENERGY TECHNOLOGIES (TBET 2020)
Organizations and Performance in a Complex World
Mathematics
The article aims to provide a perspective on economic growth by relying on the influence and use ... more The article aims to provide a perspective on economic growth by relying on the influence and use of the stock market as an economic lever. Two methods will be used: a quantitative one, determined by a multiple linear regression model, and a qualitative one that encumbers a sustainable vector model for generating economic growth. The data panel covers 36 states, for a period of 21 years. The paper manages to identify the main control functions that the stock exchange has over the macroeconomic context, through the quantitative and qualitative method, and to highlight the most important positive and negative attributes of using qualitative methods, in contrast to quantitative ones. The results show a predominant probabilistic characteristic of quantitative methods, in contrast to the flexibility and complexity of the qualitative method, which has been used. Additionally, the quantitative method offers a strictly cartesian perspective for determining future scenarios, while the sustain...
Entropy
This paper investigates the effects of social media on entrepreneurial opportunity recognition. C... more This paper investigates the effects of social media on entrepreneurial opportunity recognition. Combining the internal and external approaches of opportunity recognition, the study analyzes how social media influences the entrepreneurs in discovering new entrepreneurial opportunities. Structural equation modeling was used in this study, using the variance-based partial least squares (PLS)–structural equation modeling (SEM), on a sample of 354 entrepreneurs. We concluded that social media directly and positively influences entrepreneurial opportunity recognition while entrepreneurial alertness (internal approach) and social networks (external approach) partially mediates its indirect effects on entrepreneurial opportunity recognition. The study contributes to the existing literature by bringing new insights into the entrepreneurial opportunity recognition process by focusing on a poorly represented factor in the literature, social media.
Land Forces Academy Review
A Business Intelligence solution concerns the simple, real-time access to complete information ab... more A Business Intelligence solution concerns the simple, real-time access to complete information about the business shown in a relevant format of the report, graphic or dashboard type in order help the taking of strategic decisions regarding the direction in which the company goes. Business Intelligence does not produce data, but uses the data produced by the company’s applications. BI solutions extract their data from ERP (Enterprise Resource Planning), CRM (Customer Relationship Management), HCM (Human Capital Management), and Retail, eCommerce or other databases used in the company.
KnE Social Sciences
The paper aims at identifying the economic process modeling languages, starting from the premise ... more The paper aims at identifying the economic process modeling languages, starting from the premise that the main beneficiaries of the resulting models are economists or decision-makers, respectively economic researchers. There are a large number of languages that have been developed with different objectives, but they have all been used to describe business processes. Languages have studied different aspects of business processes (dynamic, functional, organizational, informational) and may be more or less formal, depending on the intended use and audience. There is no easy way to classify these languages along a single dimension. However, the languages fall into four groups, clearly defined scientifically or professionally: traditional process modeling languages, object-oriented languages, dynamic process modeling languages, and the integration of languages. Economic processes are generally very complex and, therefore, different points can be formulated about their modeling. Keywords:...
Land Forces Academy Review
This paper presents how to use the Capability Maturity Model Integration (CMMI) in software engin... more This paper presents how to use the Capability Maturity Model Integration (CMMI) in software engineering modeling processes. Any variation of CMMI, depending on the scope of application, can also be used to assess the process maturity of an organization. Regarding the Software Reliability Engineering (SRE) process, the activities in the SRE process have been briefly described, noting that the application of SRE in all software-based products leads to good control over the development process.
Sustainability
Urban development in recent decades has had a significant impact on climate change. Cities have i... more Urban development in recent decades has had a significant impact on climate change. Cities have implemented traffic monitoring systems to sustain the new building code in meeting the target for environmental indicators. Timisoara is the second city in Romania and manages over 60% of the development and pollution of Timis County. The analysis of large volumes of data provided by local sensors and databases requires big data analytics. In this research, for the first time, we simultaneously developed two parallel scenario-based decision-making support models to assess a CO2 sequestration index. The model is based on a tree inventory for traffic area and car flow using Roegenian processes with borders. The first scenario (dt1) analyzes the real O2-pollution car flows for process streets as receivers of pollution. The second scenario (dt2) analyzes O2-pollution flows for the same streets from the perspective of streets that garage the cars. We modeled the parallel integration of actual ...
Proceedings of the 18th International Conference on INFORMATICS in ECONOMY Education, Research and Business Technologies
Revista Economica, 2012
To participate in the digital economy, for a nation, it is imperative the need to adopt ICT, but ... more To participate in the digital economy, for a nation, it is imperative the need to adopt ICT, but not only at companies and individuals levels but also on the entire society. The national ICT adoption is significant especially in sustainable economic development of Romania. The degree to which Romania join the digital economy is influenced by measures and policies adopted by the government. The Government should facilitate, motivate and support the adoption of ICT at all three levels: individual, entrepreneurial and governmental. A nation cannot benefit from participation in digital economy when the government vision on the use of modern technology is not sufficiently developed. If Romania wants to be a competitive country, then the main role of Government should be to facilitate and enable development of the digital economy.
Proceedings of the 11th Wseas International Conference on Computers, Jul 26, 2007
Digital economy is important pawn of the current changes at micro and macro economics. Change of ... more Digital economy is important pawn of the current changes at micro and macro economics. Change of business climate has globally affected the important supporter of the GDP, SMEs. Romania's participation in digital economy allows increased electronic inclusion and minimizes the digital divide. Success in an emerging digital economy is given by increasing the spread of ICT, e-readiness and government measures to support technology development. E-readiness provides important information about Romania: the country's participation in digital economy, the level of use and generate knowledge, communication channels and accessibility of trade, the global competitiveness, the economic and social development. E-readiness, in the knowledge economy, affects the degree to which a country can absorb external know-how and generate knowledge, both social and entrepreneurial.
Revista economică
The world is facing an age of changing unseen before. The recession and the financial crisis whic... more The world is facing an age of changing unseen before. The recession and the financial crisis which started in 2009 created a movement that reacted the international economic view. The worldwide economy is currently characterized by an increase in West, a change of power in East, including increasing risks everywhere and customers that are looking for the value. At the same time these decreases rushed the adoption of key technology-mobility, ‚cloud' technology, artificial intelligence and social environment-which turns the economy and give rise to a new wave of obtaining prosperity, especially on the emerging market.
Serdica Journal of Computing, 2019
Manufacturing enterprises sometimes cannot accept orders from corporate customers because their m... more Manufacturing enterprises sometimes cannot accept orders from corporate customers because their manufacturing capacity is busy. To solve this problem this article proposes some approaches for information sharing with downstream partners of supply chains. The main approach is sending an XML file with free capacity by days from a manufacturing enterprise to its corporate customers. In this case corporate customers who send orders to the manufacturer are sure that their orders will be accepted and carried out. The practical implication of the proposed method is for manufacturing enterprises who have a lot of orders and sometimes reject some of the orders due to the lack of free manufacturing capacity. ACM Computing Classification System (1998): Y.1.0, Z.2.1. Mathematics Subject Classification - MSC2020: 03-04, 28-04, 33-04, 68M14, 68P05.
The paradigm of object oriented is successfully applied in many software projects and the use of ... more The paradigm of object oriented is successfully applied in many software projects and the use of the languages object oriented widely spread nowadays. The object oriented technologies diminish or eliminate some typical problems of the procedural software, but on the other hand they can introduce new problems wich have as a result classes of defects difficult to be adressed by means of traditional technologies of testing. In particular, the defects depended of the state, are to be meet more frequently in the object oriented programming systems rather than the procedural ones; almost all object have an associated state, and the behavior of the object. Such defects can hardly be decovered because they create anomalies only when the objects are used in particular states.
Informatică economică, 2012
In any company, no matter the dimensions, a very important aspect is the selection of human resou... more In any company, no matter the dimensions, a very important aspect is the selection of human resources and establishing a constant correspondence between the particularities of the job opened and candidate's profile. Especially in big companies, engaged in big projects, and which must be performed in a fast rhythm, the recruitment process is in a continuum progress, due to the demand rhythm, the work force mobility and to assuring a diversify knowledge data base. Experience has shown that a selection made in advance in the candi-dates CV's who apply for a scientific position, before programming the technical interview with them, is a real time saving for both the employers and the candidatesKeywords: Distributed Application, Personal Recruitment, Management, Human ResourcesIntroductionIn the process of filtering the candidates for an interview, HR department representa-tives are involved and even the RD depart-ment who is interested in hiring new candi-dates for specific jobs...
Although, direct economic information’s are, in general, difficult to obtain through reason conne... more Although, direct economic information’s are, in general, difficult to obtain through reason connected of confidentialities. Currently is observe the relation cost-benefit in the case of the using the software engineering reliability can be from one to six or upwards. More, the software engineering reliability it was credited with the incidents abatement considering to security software related, as well as the costs of servicing.
The reliability of the software represents one of the most important attributes of software quali... more The reliability of the software represents one of the most important attributes of software quality, and the estimation of the reliability of the software is a problem hard to solve with accuracy. Nevertheless, in order to manage the quality of the software and of the standard practices in an organization, it is important to achieve an estimation of the reliability as accurate as possible. In the present work there are described the principles and techniques which underlie the estimation of the reliability of the software, starting from the definition of the concepts which express the attributes of software quality. It is taken into account the issue of the estimation of a software part. The presumed objective of the estimation of the reliability consists in the analysis of the risk and of the reliability of the software-based systems. Supposedly, a documented opinion of the expert exists regarding the reliability of the software and an update of the defined estimation of the reliab...
THERMOPHYSICAL BASIS OF ENERGY TECHNOLOGIES (TBET 2020)
Organizations and Performance in a Complex World
Mathematics
The article aims to provide a perspective on economic growth by relying on the influence and use ... more The article aims to provide a perspective on economic growth by relying on the influence and use of the stock market as an economic lever. Two methods will be used: a quantitative one, determined by a multiple linear regression model, and a qualitative one that encumbers a sustainable vector model for generating economic growth. The data panel covers 36 states, for a period of 21 years. The paper manages to identify the main control functions that the stock exchange has over the macroeconomic context, through the quantitative and qualitative method, and to highlight the most important positive and negative attributes of using qualitative methods, in contrast to quantitative ones. The results show a predominant probabilistic characteristic of quantitative methods, in contrast to the flexibility and complexity of the qualitative method, which has been used. Additionally, the quantitative method offers a strictly cartesian perspective for determining future scenarios, while the sustain...
Entropy
This paper investigates the effects of social media on entrepreneurial opportunity recognition. C... more This paper investigates the effects of social media on entrepreneurial opportunity recognition. Combining the internal and external approaches of opportunity recognition, the study analyzes how social media influences the entrepreneurs in discovering new entrepreneurial opportunities. Structural equation modeling was used in this study, using the variance-based partial least squares (PLS)–structural equation modeling (SEM), on a sample of 354 entrepreneurs. We concluded that social media directly and positively influences entrepreneurial opportunity recognition while entrepreneurial alertness (internal approach) and social networks (external approach) partially mediates its indirect effects on entrepreneurial opportunity recognition. The study contributes to the existing literature by bringing new insights into the entrepreneurial opportunity recognition process by focusing on a poorly represented factor in the literature, social media.
Land Forces Academy Review
A Business Intelligence solution concerns the simple, real-time access to complete information ab... more A Business Intelligence solution concerns the simple, real-time access to complete information about the business shown in a relevant format of the report, graphic or dashboard type in order help the taking of strategic decisions regarding the direction in which the company goes. Business Intelligence does not produce data, but uses the data produced by the company’s applications. BI solutions extract their data from ERP (Enterprise Resource Planning), CRM (Customer Relationship Management), HCM (Human Capital Management), and Retail, eCommerce or other databases used in the company.
KnE Social Sciences
The paper aims at identifying the economic process modeling languages, starting from the premise ... more The paper aims at identifying the economic process modeling languages, starting from the premise that the main beneficiaries of the resulting models are economists or decision-makers, respectively economic researchers. There are a large number of languages that have been developed with different objectives, but they have all been used to describe business processes. Languages have studied different aspects of business processes (dynamic, functional, organizational, informational) and may be more or less formal, depending on the intended use and audience. There is no easy way to classify these languages along a single dimension. However, the languages fall into four groups, clearly defined scientifically or professionally: traditional process modeling languages, object-oriented languages, dynamic process modeling languages, and the integration of languages. Economic processes are generally very complex and, therefore, different points can be formulated about their modeling. Keywords:...
Land Forces Academy Review
This paper presents how to use the Capability Maturity Model Integration (CMMI) in software engin... more This paper presents how to use the Capability Maturity Model Integration (CMMI) in software engineering modeling processes. Any variation of CMMI, depending on the scope of application, can also be used to assess the process maturity of an organization. Regarding the Software Reliability Engineering (SRE) process, the activities in the SRE process have been briefly described, noting that the application of SRE in all software-based products leads to good control over the development process.
Sustainability
Urban development in recent decades has had a significant impact on climate change. Cities have i... more Urban development in recent decades has had a significant impact on climate change. Cities have implemented traffic monitoring systems to sustain the new building code in meeting the target for environmental indicators. Timisoara is the second city in Romania and manages over 60% of the development and pollution of Timis County. The analysis of large volumes of data provided by local sensors and databases requires big data analytics. In this research, for the first time, we simultaneously developed two parallel scenario-based decision-making support models to assess a CO2 sequestration index. The model is based on a tree inventory for traffic area and car flow using Roegenian processes with borders. The first scenario (dt1) analyzes the real O2-pollution car flows for process streets as receivers of pollution. The second scenario (dt2) analyzes O2-pollution flows for the same streets from the perspective of streets that garage the cars. We modeled the parallel integration of actual ...
Proceedings of the 18th International Conference on INFORMATICS in ECONOMY Education, Research and Business Technologies
Revista Economica, 2012
To participate in the digital economy, for a nation, it is imperative the need to adopt ICT, but ... more To participate in the digital economy, for a nation, it is imperative the need to adopt ICT, but not only at companies and individuals levels but also on the entire society. The national ICT adoption is significant especially in sustainable economic development of Romania. The degree to which Romania join the digital economy is influenced by measures and policies adopted by the government. The Government should facilitate, motivate and support the adoption of ICT at all three levels: individual, entrepreneurial and governmental. A nation cannot benefit from participation in digital economy when the government vision on the use of modern technology is not sufficiently developed. If Romania wants to be a competitive country, then the main role of Government should be to facilitate and enable development of the digital economy.
Proceedings of the 11th Wseas International Conference on Computers, Jul 26, 2007
Digital economy is important pawn of the current changes at micro and macro economics. Change of ... more Digital economy is important pawn of the current changes at micro and macro economics. Change of business climate has globally affected the important supporter of the GDP, SMEs. Romania's participation in digital economy allows increased electronic inclusion and minimizes the digital divide. Success in an emerging digital economy is given by increasing the spread of ICT, e-readiness and government measures to support technology development. E-readiness provides important information about Romania: the country's participation in digital economy, the level of use and generate knowledge, communication channels and accessibility of trade, the global competitiveness, the economic and social development. E-readiness, in the knowledge economy, affects the degree to which a country can absorb external know-how and generate knowledge, both social and entrepreneurial.
Revista economică
The world is facing an age of changing unseen before. The recession and the financial crisis whic... more The world is facing an age of changing unseen before. The recession and the financial crisis which started in 2009 created a movement that reacted the international economic view. The worldwide economy is currently characterized by an increase in West, a change of power in East, including increasing risks everywhere and customers that are looking for the value. At the same time these decreases rushed the adoption of key technology-mobility, ‚cloud' technology, artificial intelligence and social environment-which turns the economy and give rise to a new wave of obtaining prosperity, especially on the emerging market.