Bulletin of NTU "KhPI". Series: Strategic management, portfolio, program and project management最新文献

{"title":"STRATEGIC ADVERTISING MANAGEMENT DURING THE PRODUCT LIFE CYCLE","authors":"O. Melnikov","doi":"10.20998/2413-3000.2022.6.11","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.6.11","url":null,"abstract":"The subject of the research is the development of a strategy for optimal management of the company's advertising expenditures when promoting a new product to the market throughout its entire life cycle. To model the sales dynamics of a new product, the article proposes a modification of the Bass diffusion of innovations model, which makes it possible to numerically simulate the impact of advertising expenditures on the intensity of sales of the two groups of consumers identified in the model, namely innovators and imitators. The problem of optimal control of advertising expenditures for product promotion throughout its entire life cycle is formulated. As an optimality criterion, the expected net present value of cash flows from the sale of the product is chosen. It is shown how to solve this problem by means of dynamic programming techniques. An algorithm for numerical search for the optimal control program of advertising expenditures based on the method of contraction mapping has been developed and implemented. As a result of the algorithm, the optimal level of advertising expenditures is established in the form of a law with feedback, where the degree of market saturation acts as a state variable of the system. On this basis, one can find the optimal level of advertising expenditures in each time period and compare sales trajectories with different advertising strategies. Two cases of advertising aimed at innovators and imitators were studied separately. Numerical experiments were carried out, on the basis of which the qualitative characteristics of the strategy for optimal control of advertising expenditures for these two cases were determined. The influence of the chosen management strategy on the form and duration of the product life cycle has been studied. Conclusions are drawn about the comparative economic efficiency of various advertising management strategies. Optimization of the advertising budget using the developed methodology allows enterprises to check whether the planned level of advertising spending is excessive or insufficient. The application of the methodology allows not only to find the optimal size of advertising expenditures depending on the stage of the product life cycle, but also to predict sales and profits for future periods.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132434388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"СONFLICTS IN PROJECT MANAGEMENT","authors":"M. Grinchenko, O. Ponomaryov, O. Lobach, Alla Kharchenko","doi":"10.20998/2413-3000.2022.5.6","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.6","url":null,"abstract":"It is shown that in the case of people carrying out joint activities, including in the practice of using project management technology, conflicts may arise between performers and different groups of performers. They, as a rule, are due to differences in goals and motives, aspirations and interests of people, their psychological characteristics. Conflicts are undesirable, since they significantly complicate the interaction and relationships between the performers and, accordingly, prevent the achievement of the desired or expected results of joint activities in the implementation of project tasks. The nature and possible causes of the conflict and its types are analyzed. In particular, it has been found that not every difference causes conflicts. Their sources are basically only those situations in which the material interests of at least one of the parties, their dignity or social status are affected. This indicates the importance of taking into account in the practice of project management not only technological, but also psychological aspects of activity. The nature of the interaction between the level of cohesion, psychological compatibility and corporate culture of the project team and the impact of possible conflicts on it and on the relationship between members of the project team. It is shown that the likelihood of conflict increases significantly when the project team includes so-called conflicting personalities. The meaning and nature of the project manager's activity, aimed at preventing conflicts, as a manifestation of one of his important behavioral competencies, is revealed. Examples of the content and nature of the model of adequate behavior of a leader in a conflict, as well as behavior requiring correction, are given. The article considers the essence of the conflictological competence of the project manager, which includes the manager's knowledge and understanding of his possible violations that can lead to conflict situations and conflicts. Effective ways of preventing and managing conflicts in case of their occurrence are considered.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115618323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STRATEGY FOR SUSTAINABLE DEVELOPMENT OF RAPID GROWING ORGANIZATIONS","authors":"S. Bushuyev, N. Bushuyeva, Denis A. Bushuyev, Victoria Bushuyeva","doi":"10.20998/2413-3000.2022.5.2","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.2","url":null,"abstract":"The strategy of sustainable development of fast-growing organizations is considered. The strategic architecture of sustainable development of organizations on the basis of projects and programs is given. Strategic architecture includes processes of production excellence, product leadership in the market, sustainability of the organization, consumer orientation. Strategic architecture shows what opportunities and competencies need to be built now, what new customers may be coming soon, what new channels to promote products or services need to be explored today, what changes within the organization are needed right now. When building an organization's development strategy, it is necessary to define reform goals based on the organization's strategic priorities, key competencies and strategic priorities of the organization, involve employees in situation analysis, identify key competencies and choose strategic priorities, constantly assess the extent to which selected priorities help The life cycle of projects of sustainable development of knowledge and management technologies is determined. The key competencies and strategic priorities of the organization for the implementation of the strategy of sustainable development are considered. Economic factors of a fast-growing organization allow assessing strategic priorities, projects and sustainable development programs. Organizational growth cycles and growth accelerators are key elements in building projects and programs of strategic development of organizations. The proposed concept of growth cycles is a model of the driving forces of sustainable development, which have become an improvement of modern strategic schemes, and helps to explain why some organizations have achieved a dominant position. Let's define the following types of growth accelerators as fixed cost reduction, market image and brand. The corporation's market leadership increases attention and trust in its products through advertising, positive word of mouth, \"fashion factor\", partner management, recruitment and mediation.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116761056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IMPACT OF THE NEW NORMALITY ON STRATEGIC MANAGEMENT AND PROJECT & PROGRAM MANAGEMENT","authors":"Hiroshi Tanaka","doi":"10.20998/2413-3000.2022.5.1","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.1","url":null,"abstract":"According to representative theories on strategy by Henry Mintzberg, Lawrence Freedman, et al. strategy is a general plan to achieve one or more long-term or overall goals under conditions of uncertainty; strategy involves setting goals and priorities, determining actions to achieve the goals, and mobilizing resources to execute the actions. Strategy can be classified into 1) planned strategy, e. g. strategy derived from a corporation’s mission statement; 2) differentiation strategy to compete in the competitive marketplace; and 3) contingent strategy to empower a corporation to get adapted to ecosystem changes. Being a part of project management studies, this article focuses on type 3) strategy and analyzes how the strategic management in this category, usually conducted by using project, program and portfolio management (PPPM) as its vehicle of implementation, is being affected or will be affected by the new normality. The new normality includes factors such as the VUCA characters of the world; disruption in technology, economy and society; climate change; green economy; a chain of epidemics or pandemics; and digital transformation. These factors mandate agile perspectives, positioning and planning of contingent strategy and updated ways strategies are delivered by way of strategic management and PPPM along the Mintzberg theory. This paper, after examining the impact of the new normality factors on contingent strategy, proposes a conceptual framework of and concise discussions on agility elements of corporate enterprises under the new normality which are realized by applied project management, and the author’s methodologies and learning attitude to cope with disruption. The agility elements are grouped into agility in mid-term corporate planning, corporate agility enablers, agile business development by projects, and project management adaptive to agility. In the conclusion, the author’s outlook on project and project management models in the new normality is offered.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126174699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FEATURES OF RENEWABLE ENERGY PROJECTS AND SPECIFICITY OF THEIR MANAGEMENT","authors":"Vitaly Sevostianov, A. Sevostianova, Oksana Savina","doi":"10.20998/2413-3000.2022.5.8","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.8","url":null,"abstract":"Global climate change, the consequences of accidents at power plants, rising energy prices, rising demand for energy resources necessitate the adjustment of energy policy of many countries in the direction of development of renewable energy sources. Ukraine's strategy in this area is aimed at solving the main problems of increasing the share of energy from renewable sources in the structure of the overall primary energy supply and the search for and use of skilful approaches to the management of renewable energy projects. A study of the state and problems of development of renewable energy in Ukraine. Based on the results of the analysis of the work of domestic and foreign scientists and researchers in the field of renewable energy project management, it is concluded that this aspect is studied in part and in fragments, identified problems of existing management. It is determined that to ensure the sustainable development of renewable energy and the implementation of forecasts requires proper and skillful management of renewable energy projects, which takes into account their specific features and aims to improve the efficiency of such projects. It is revealed that renewable energy sources include periodic or constant energy flows that propagate in nature and are limited only by the stability of the Earth as a cosmoplanetary element: radiant energy of the Sun, wind, hydropower, natural heat and more. The types of renewable energy projects and their features are identified, which are considered within the categories. The classification of renewable energy projects is carried out. Distinctive features of renewable energy projects and features of their management are highlighted. Renewable energy projects have been identified as being at risk, environmentally friendly and dependent on a large number of stakeholders.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130523558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"DEFERRED SOLUTIONS METHOD DEVELOPMENT FOR CONSTRUCTING A HAMILTONIAN CYCLE SEARCH ALGORITHM ON A GRAPH","authors":"Vladymyr Prokopenkov","doi":"10.20998/2413-3000.2022.5","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5","url":null,"abstract":"The subject of research is the solution of the problem of finding a Hamiltonian cycle on a graph, which belongs to the NP complexity class. The aim of the work is to develop an effective polynomial algorithm for its optimal solution. The paper analyzes the problem and the existing methods of its solution, identifies the shortcomings of these methods. It is showing that the main obstacle remains the inability to formulate the conditions for finding the optimal solution. As a result, the methods for solving this problem based on enumeration over acceptable solutions or on intuitive heuristics. Heuristic methods do not guarantee finding the optimal solution. Enumeration methods are popular because of a simple linear search scheme in a pre-known set of valid solutions to the problem. They allow you to find the optimal solution, but require a lot of time. In enumeration algorithms, valid solutions can be obtain by using graph traversal algorithms, but the factorial cost of enumeration requires reducing the enumeration space, for example, using the branch-and-bound method. This method is based on an ordered search of acceptable solutions, considering only the most promising ones, and discarding at once the whole sets of solutions that are not such. For the method to work, it is important to determine the cost function of a partial solution that depends on certain parameters, which is difficult, and perhaps impossible for the problem under consideration. If the function generates a probabilistic estimate, there is a risk of losing the optimal solution to the problem when it is discarding. The only reliable estimate for a valid solution is the length of the cycle, which, unfortunately, becoming known after its formation. As an alternative, the article proposes a new method of deferred solutions, according to which all possible partial solutions are constructed and stored simultaneously. Each partial solution is characterizing by its own evaluation. At each step, a partial solution is completing by adding a vertex to it, to which you can go from its last vertex – as many new partial solutions are building, as there are options for going from its last vertex. The generated partial solutions are saving, and the current worked-out solution is deleting. To perform the next step, the partial solution that has the smallest length estimate is selecting. Execution continues until the optimal solution is not build. The proposed method solves the problem under consideration, but its application for large graphs requires the selection of a correct estimate of partial solutions.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"272 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115902983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MATHEMATICAL MODEL OF BEHAVIORAL RISK MANAGEMENT IN ART PROJECTS","authors":"I. Rybalko","doi":"10.20998/2413-3000.2022.5.7","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.7","url":null,"abstract":"The developed mathematical model of behavioral risk management of art-projects, created on the basis of the conceptual model \"Palette\" built earlier, is offered. The identified risks of art-projects, a detailed description of which is presented in previous scientific works of the author, were distributed between the four sources that formed the basis of the conceptual model \"Palette\". Given the extreme importance of the influence of the human factor on the art project, the identified risks from the four sources were classified in the group of behavioral risks. The author proposed the definition of behavioral risks in the context of the implementation of art projects, as destructive behavior of the art project team member, which can prevent the receipt of the art project product or the success of the project as a whole. The analysis of scientific works in the field of development and application of mathematical model in project management showed the expediency and practical effectiveness of this method. The mathematical model has become an effective tool for a project manager of any field in the calculation of various indicators important in the development of project management plans. According to the conceptual model \"Palette\" and the mathematical model, the author has developed a spectral palette (scale), which can be used to obtain a characteristic that determines how risky each of the potential team members to perform a certain art project, depending on the sector in which the result of the calculation of the probability of behavioral risk is entered. It is concluded that the application of this mathematical model is of practical value for the art-project manager in developing a plan of antirisk measures and choosing a behavioral strategy taking into account the obtained assessment of each potential team member of an art-project. Determining the degree of riskiness of each art-project team member gives the manager answers to many questions about the motives of individual actions of a certain team member, explains his behavior in performing personal tasks, and in interaction with other team members and art-project stakeholders. Further scientific work of the author is to develop methods of behavioral risk management of art-projects, aimed at improving the effectiveness of art-project team management for its successful implementation.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130380381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SYSTEM MODEL OF COMMUNICATION PARTICIPANTS 'COMMUNICATION PROCESSES","authors":"O. Malyeyeva, Dmytro Lytvynenko","doi":"10.20998/2413-3000.2022.5.4","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.4","url":null,"abstract":"The subject matter of the article is the stakeholder’s communication processes of infrastructure development projects. The goal is to develop a formalized systemic model of the communication processes interaction between project stakeholders and project team in a virtual office environment. The following methods are applied: systemic analysis, set-theoretic models. The article solves the following problem: the basic communication management terms defined, the communication types defined, existing communication models analyzed, stakeholders communication processes set-theoretic systematic model developed. The following results are obtained: project management communication processes were analyzed; the project communication processes between stakeholder’s importance was demonstrated; communication process content and term were defined; fundamental project communication processes, that are necessary for the timely and correct project data generation, collecting, distribution and saving, were defined; project communication processes were classified, by assessing existing project management systems; project communication management stages and centralized/decentralized communication structure types were defined; fundamental linear/non-linear project communication processes were examined; communication processes modeling and formal application were analyzed; 3-component communication system model was proposed; proposed communication model characterized the communication act sequence and consist of a set of vertices - communication acts and connecting edge set, what shows the ability to move from current act to the next one. Conclusions: Formalized communication model as a system model gives the ability to solve the time optimization and security problems of the project virtual offices. Particular activities and communications of the general project tasks set, where the project team and other stakeholders simultaneous cooperation is required, should be taken into account.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127875145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"APPROACH SELECTION METHOD FOR PROJECT PORTFOLIO MANAGEMENT AND ITS APPLICATION","authors":"Igor Kononenko, Maximilien Kpodjedo","doi":"10.20998/2413-3000.2022.5.3","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.3","url":null,"abstract":"Project portfolio management has evolved in recent decades from an empirical field to a field with advanced management technologies, including the active use of information technology. A number of standards and guidelines for project portfolio management have been created. Many dozens of specialized software tools have been developed. The effectiveness of an organization's project portfolio management significantly depends on the chosen management approach, as well as the level of use of project portfolio management capabilities. The level of utilization of project portfolio management capabilities is the level of maturity of an organization in this area. The aim of the article is to apply the method of project portfolio management approach selection. The article proposes to carry out the selection of a project portfolio management approach by solving a two-criteria problem. The first criterion is the risks inherent in this approach in the management of the organization's project portfolio under specific conditions. The less these risks, the more qualitative approach is applied. The second criterion - the costs of applying the evaluated approach. The application of the proposed method to improve project portfolio management in one of the technical universities in Ukraine was considered. Risks from non-performance or imperfect performance of portfolio management processes at the university were assessed. We also assessed the existing costs of managing the portfolio of projects.  To improve the quality of management at the university, it is advisable to improve the execution of portfolio management processes and implement those processes that are not yet performed. This can be done by implementing a computerized portfolio and project management system for the university. Jira Portfolio Commercial can be used as such a system. With the use of computerization, new processes for project portfolio management will appear. For a number of existing processes in the organization, employee payroll costs will be reduced. For many processes, risks from non-performance or imperfect execution will be reduced. Computerization of project portfolio management will enable to reduce management costs by 1.8% and risks by 49.4%, i.e. almost by half.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114006906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE SIMPLIFYING OF THE SOLUTION OF LINEAR OPTIMIZATION PROBLEMS IN PROJECT MANAGEMENT","authors":"L. Chernova, S. Titov, Lyudmila Chernova","doi":"10.20998/2413-3000.2022.5.10","DOIUrl":"https://doi.org/10.20998/2413-3000.2022.5.10","url":null,"abstract":"Modern mathematic models of project management processes description can be use in many cases to linear optimization problems. Simplification algorithms provide an efficient method of searching for solution of an optimization problem. If we project a multidimensional process onto a two-dimensional plane, this method will enable graphic visualization of the problem solution matrixes. A significant simplification of the algorithms for preparing the linear optimization problem in computer calculations can be achieved using the concept of duality in linear optimization problems. The linear optimization problem forms are equivalent. This can be achieved provided that transformation techniques are used to move from one form of tasks to another. To simplify the transformation of linear optimization problems, the transition from maximizing to minimizing the objective function is used. This research has proposed a method of simplifying the combinatorial solution of a discrete optimization problem. It is based on decomposition of the system representing a system of constraints of a five-dimensional initial problem into the two-dimensional coordinate plane. There was a model example considered for solving a five-dimensional linear optimization problem based on such projecting of a multidimensional space onto the two-dimensional one. The paper is concerned with construction of a chain of efficient algorithms to simplify the primary mathematic model of problem and realization its computer-aided calculation. Applied value of the proposed approach consists in using the scientific result for enabling the possibility to improve canonical methods of optimization problem solution and, respectively, for simplification of computer-assisted calculation.","PeriodicalId":185781,"journal":{"name":"Bulletin of NTU \"KhPI\". Series: Strategic management, portfolio, program and project management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129539218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}