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نتیجه جستجو - Portfolio

تعداد مقالات یافته شده: 180
ردیف عنوان نوع
1 Implementation of Quantum Annealing: A Systematic Review
پیاده سازی آنیل کوانتومی: مروری سیستماتیک-2022
Quantum annealing is a quantum computing approach widely used for optimization and probabilistic sampling problems. It is an alternative approach designed due to the limitations of gate-based quantum computing models. The method is observed to have a significant impact on different fields such as machine learning, graphics, routing, scheduling, computational chemistry, computational biology, security, portfolio, and others despite the fact that it is relatively new. This research provides a systematic review of research development trends in the field of quantum annealing and analyzes how it has been implemented in different problem domains. The results are expected to serve as the basis to identify the opportunities and challenges of research related to its implementation. The main contribution of this systematic review is to summarize different implementations of quantum annealing. It is also to analyze the prospect and opportunities in one of the problem domains with the greatest interest which is machine learning.
INDEX TERMS: Quantum annealing | implementation | review.
مقاله انگلیسی
2 The impact of banking regulations and accounting standards on estimating discretionary loan loss provisions
تأثیر مقررات بانکی و استانداردهای حسابداری بر برآورد ذخایر زیان وام اختیاری-2021
Loan loss provisions (LLP) are relatively large accruals for commercial banks (Ahmed et al., 1999), and therefore, have a significant impact on banks’ earnings and regulatory capital. Moreover, LLP are one of the leading accounting disclosure items that offer a substantial scope of discretion to managers (Moyer, 1990). The discretionary nature of LLP makes them particularly useful in examining the impact of regulations on managerial behaviour (Kim and Kross, 1998). The main objective of LLP is to modify the banks’ loan loss reserves to reflect the expected future losses in the banks’ loan portfolio. However, prior evidence suggests that managers employ LLP to (a) manage earnings (b) manage regulatory capital, and (c) as a signal to communicate their private information to investors about future prospects (Bushman and Williams, 2012; Elliott et al., 1991; Moyer, 1990; Scholes et al., 1990). Several models have been proposed in the banking literature to estimate the expected LLP and identify the discretionary component. These models include Wahlen (1994), Beatty et al. (1995), Beaver and Engel (1996), Kim and Kross (1998), Ahmed et al. (1999), Liu and Ryan (2006), Kanagaretnam et al. (2010), Bushman and Williams (2012), Beck and Narayanmoorthy (2013), Bouvatier et al. (2014),
keywords: تامین ضرر وام | ارائه اختیاری | دارایی غیرفعال | اقلام تعهدی | رفتار مدیریتی | رویکرد متحمل ضرر | Loan loss provision | Discretionary provision | Nonperforming asset | Accruals | Managerial behaviour | Incurred-loss approach
مقاله انگلیسی
3 Mental accounts with horizon and asymmetry preferences
حسابهای ذهنی با ترجیحات افق و نامتقارن-2021
This paper extends mental accounting theory with an investment horizon and asymmetric trade-off between extreme gains and losses. This horizon-asymmetry mental accounting (HAMA) framework widens the spectrum of investors’ optimal portfolio choices considerably. Risk aversion, implied from the mean-variance portfolio theory, and the bond-to-stock ratio decline with the investment horizon. HAMA investors with a large gain–loss asymmetry trade-off are more concerned about skewness and kurtosis rather than variance. To apply the model to United States stock data, we develop a parsimonious semi-parametric version of HAMA that relies on the moments of return distributions. The analysis of optimal portfolios shows that investors who care significantly about upside potential hold asymmetric, leptokurtic, and less diversified allocations.
keywords: حساب های ذهنی | انتخاب نمونه کارها | افق | پتانسیل صعودی | خطر گریزی | Mental accounts | Portfolio choice | Horizon | Upside potential | Risk aversion
مقاله انگلیسی
4 Third-party remanufacturing mode selection for a capital-constrained closed-loop supply chain under financing portfolio
انتخاب حالت بازآفرینی شخص ثالث برای یک زنجیره تامین حلقه بسته با محدودیت سرمایه تحت سبد سرمایه گذاری-2021
Remanufacturing, especially third-party remanufacturing, has become an important option for original equipment manufacturers (OEMs) to effectively balance the economic benefits and environmental impacts of their operations. Further, capital constraint and financing behavior have critical impact on the operations of OEMs, especially small- and medium-sized OEMs. Hence, we aim to explore how the OEM’s capital constraint and financing behavior will affect its selection preference regarding the two sub-modes of third-party remanufacturing: outsourcing and authorization. To this end, we consider a dyadic closed-loop supply chain consisting of a leading third-party remanufacturer (TPR) and a capital-constrained OEM. Taking the case of no capital constraint as benchmark, the choice preference of remanfuacturing modes between outsourcing and authorization is investigated under the case of capital constraint and financing portfolio (including trade credit and bank loan). The findings are as follows. Compared with the benchmark case of no capital constraint, under the financing portfolio, the OEM’s choice preference shifts from outsourcing mode to authorization mode, while the TPR’s choice preference shifts from authorization mode to outsourcing mode. From the perspective of the whole supply chain (SC), the authorization mode would always be conducive to promoting the total profit of the SC when the OEM is capital-unconstrained. By contrast, in the case of financing portfolio, outsourcing mode would be more preferred by the SC except when remanufacturing is much profitable. The above suggests that the TPR and OEM should change their selection preferences when the OEM is severely capital-constrained. Moreover, a contract should be signed between the TPR and OEM to handle their conflicts in selection preference, and who plays an active role in coordinating the SC depends on the profitability of remanufacturing.
Keywords: Closed-loop supply chain | Third-party remanufacturing | Financing portfolio | Capital constraint | Trade credit | Bank loan
مقاله انگلیسی
5 Portfolio effects of knowledge management strategies on firm performance: Complementarity or substitutability?
اثرات نمونه کارها استراتژی های مدیریت دانش بر عملکرد شرکت: مکمل یا جایگزینی؟-2021
To investigate the mutual effects of knowledge management (KM) strategies on firm performance, we categorize the portfolios of KM strategies into four patterns: unrelated (scope- and type-based), related, extended, and high diversity portfolios. An inverted U-shaped relationship of KM diversity and firm performance is proposed across the portfolios based on the underlying cost–benefit tradeoffs. Supermodularity test results indicate that strategies of unrelated diversity portfolios show substitutable effects, whereas strategies of related diversity portfolios have complementary effects on firm performance. While strategies of extended diversity portfolios exhibit mixed re- sults with complementary and substitutable effects, strategies of high diversity portfolio exhibit a substitutable effect. Our findings indicate that multiple KM strategies, as a firm’s portfolio, mutually generate complemen- tarities or cause substitutabilities in improving firm performance. We also discuss practical implications for managerial decisions on successful KM.
keywords: استراتژی مدیریت دانش | چشم انداز نمونه کارها | تنوع | مکمل و جایگزینی | تست SuperModularity | Knowledge management strategy | Portfolio perspective | Diversity | Complementarity and substitutability | Supermodularity test
مقاله انگلیسی
6 Know when to fold ‘em: An empirical description of risk management in public research funding
بدانید چه موقع برابر شوید: شرح تجربی مدیریت ریسک در بودجه تحقیق عمومی-2020
Public research funding programs typically make grants with minimal intervention by program staff, rather than using a hands-on approach to project management, which is more common in the private sector. In contrast, program staff at the US Department of Energys Advanced Research Projects Agency – Energy (ARPA-E) are given a set of real options with which to manage funded projects: abandon, contract or expand project budgets or timelines. Using internal data from ARPA-E, we show that active project management enables risk mitigation across a portfolio of research projects. We find that program staff modify projects frequently, especially project timelines, and these changes are more sensitive to poor performance than to strong performance. We also find that projects with a shortened timeline or reduced budget are less likely to generate short-term research outputs, compared to those of ultimately similar size. This evidence suggests that the practice of active project management, when combined with high upfront risk tolerance, can be used to enhance the productivity of missionoriented public research funding.
Keywords: R&D funding | Project management | Real options | Managerial flexibility
مقاله انگلیسی
7 Pharmaceutical R & D pipeline management under trial duration uncertainty
مدیریت خط لوله تحقیق و توسعه دارویی تحت عدم قطعیت آزمایش-2020
We consider a pharmaceutical Research & Development (R & D) pipeline management problem under two significant uncertainties: the outcomes of clinical trials and their durations. We present an Approximate Dynamic Programming (ADP) approach to solve the problem efficiently. Given an initial list of potential drug candidates, ADP derives a policy that suggests the trials to be performed at each decision point and state. For the classical R&D pipeline planning problem with deterministic trial durations, we compare our ADP approach with other methods from the literature, and find that it can find better solutions more quickly in particular for larger problem instances. For the case with stochastic trial durations, we compare the ADP algorithm with a myopic approach and show that the expected net profit obtained by the derived ADP policy is higher (almost 20% for a 10-drug portfolio).
Keywords: Dynamic programming | Pharmaceutical R&D pipeline management | Heuristics | Approximate dynamic programming | Project scheduling
مقاله انگلیسی
8 Customer-centric prioritization of process improvement projects
اولویت بندی مشتری محور پروژه های بهبود فرآیند-2020
Today, customers can conveniently compare products and decide how to interact with companies. With customer centricity becoming an important success factor, companies must drive customer satisfaction not only through excellent products but also through customer-centric processes. As many companies face an abundance of action possibilities, fast-changing customer needs, and scarce resources, guidance regarding the customercentric prioritization of process improvement projects is in high need. As existing approaches predominantly focus on process efficiency, we propose a decision model that accounts for the effects of process improvement on customer centricity in line with justificatory knowledge on value-based process decision-making, project portfolio selection, and the measurement of customer satisfaction. When building the decision model, we adopted the design science paradigm and used multi-criteria decision analysis as well as normative analytical modeling as research methods. We evaluated the model by discussing it with practitioners, by building a software prototype, and by applying it at a German insurance company. Overall, our research extends the prescriptive knowledge on process prioritization and customer process management.
Keywords: Business process management | Business process improvement | Process decision-making | Customer centricity | Project portfolio selection | Kano model
مقاله انگلیسی
9 Emerging strategy recognition in agile portfolios
شناخت استراتژی در حال ظهور در پرتفوی چابک-2020
Agile practices become increasingly popular for projects and project portfolios offering firms a higher flexibility to adapt to dynamic environments. This study investigates the antecedents and consequences of agile practices relevance for strategy formulation in project portfolio management processes. Building on complex adaptive systems theory, we hypothesize a positive relationship between agile capabilities and emerging strategy initiatives and eventually portfolio success. Agile capabilities refer to both the project portfolio organizations intensity of and competence in applying agile practices. Using a sample of 135 portfolios and multiple informants for each portfolio, the results support entrepreneurial orientation and voice behavior as antecedents for agile capabilities. Furthermore, the findings support an agile portfolios positive relationship with emergence recognition and overall portfolio success. The findings contribute to the literature by identifying two significant antecedents of agile capabilities as well as empirically demonstrating the positive relationship between agile portfolios and emerging strategy recognition. For practitioners, the study encourages the application of agile practices by stressing the general positive influence of agile capabilities and underlines entrepreneurial orientation and voice behavior as important methods of empowerment for agile portfolio processes.
Keywords: Agile portfolio | Emerging strategy | Project portfolio success | Structural equation model
مقاله انگلیسی
10 Reconciling alignment, efficiency, and agility in IT project portfolio management: Recommendations based on a revelatory case study
آشتی دادن هم ترازی ، کارایی و چابکی در مدیریت نمونه کارهای پروژه IT: توصیه های مبتنی بر یک مطالعه موردی وحی-2020
Current developments put significant pressure on IT project portfolio management (IT PPM), increasingly requiring IT project portfolios to be strategically aligned and efficient yet agile. Accordingly, our aim is to identify IT-PPM-related tensions among the three design goals alignment, efficiency, and agility, and to elaborate a set of design principles that will provide organizations with recommendations for reconciling these goals. We conduct our research trough the theoretical lens of Activity Theory. Our findings are based on a revelatory case study in the financial services sector and are evaluated through focus group discussions and expert interviews.
Keywords: IT PPM | IT project portfolio | Agility | Alignment | Efficiency
مقاله انگلیسی
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