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  • 1
    Online Resource
    Online Resource
    Wiley ; 2022
    In:  Production and Operations Management Vol. 31, No. 3 ( 2022-03), p. 1157-1173
    In: Production and Operations Management, Wiley, Vol. 31, No. 3 ( 2022-03), p. 1157-1173
    Abstract: We show that a two‐product newsvendor problem with partial demand substitution is equivalent to the classical newsvendor problem with the same economic parameters but an adjusted demand—the effective demand. By comparing the adjusted demand and the primary demand stochastically, we examine the impacts of demand substitution on the expected profit and optimal order quantities. We demonstrate that demand substitution reduces the newsvendor's demand variability in the sense of convex order. Furthermore, as the degree of substitution increases or the two products’ demands become less dependent in the sense of supermodular order, the newsvendor's effective demand becomes less uncertain, which implies a higher expected profit. Under rather general assumptions, we show that the distribution function for the newsvendor's effective demand satisfies the single‐crossing property as the degree of substitution changes. This allows us to rank the optimal order quantities for two different degrees of substitution. To further develop insights, we analyze the case where the demand dependence structure is modeled using copula. We show that the optimal profit is decreasing and convex in demand dependence. Furthermore, by exploring the interaction effect of demand dependence and the degree of substitution, we show that a firm can achieve positive synergy by simultaneously increasing the substitution degree and decreasing demand dependence.
    Type of Medium: Online Resource
    ISSN: 1059-1478 , 1937-5956
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2151364-8
    detail.hit.zdb_id: 1108460-1
    SSG: 3,2
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  • 2
    Online Resource
    Online Resource
    Institute for Operations Research and the Management Sciences (INFORMS) ; 2023
    In:  Manufacturing & Service Operations Management
    In: Manufacturing & Service Operations Management, Institute for Operations Research and the Management Sciences (INFORMS)
    Abstract: Problem definition: Inventory commitment and monetary compensation are widely recognized as effective strategies in monopoly settings when customers are concerned about stockouts. To attract more customer traffic, a firm reveals its inventory availability information to customers before the sales season or offers monetary compensation to placate customers if the product is out of stock. This paper investigates these two strategies when retailers compete on both price and inventory availability. Methodology/results: We develop a game-theoretic framework to analyze the strategic interactions among the retailers and customers and draw the following insights. First, both inventory commitment and monetary compensation may lead to a prisoner’s dilemma. Although these strategies are preferred regardless of the competitor’s price and inventory decisions, the equilibrium profit of each retailer could be lower in the presence of inventory commitment or monetary compensation because they intensify the competition between the retailers. Second, we find that market competition may hurt social welfare compared with a centralized setting by reducing the product availability in equilibrium. The inventory commitment and monetary compensation strategies further intensify the competition between the retailers, therefore causing an even lower social welfare. Managerial implications: Our study shows that, although inventory commitment and monetary compensation improve retailers’ profit and social welfare under monopoly, these strategies should be used with caution under competition. Funding: F. Zhang is grateful for the financial support from the National Natural Science Foundation of China [Grants 71929201, 72131004]. R. Zhang is grateful for the financial support from the Hong Kong Research Grants Council General Research Fund [Grant 14502722] and the National Natural Science Foundation of China [Grant 72293560/72293565]. Y. Yu is grateful for the financial support from the National Natural Science Foundation of China [Grant 71921001] . Supplemental Material: The online appendix is available at https://doi.org/10.1287/msom.2021.0411 .
    Type of Medium: Online Resource
    ISSN: 1523-4614 , 1526-5498
    RVK:
    Language: English
    Publisher: Institute for Operations Research and the Management Sciences (INFORMS)
    Publication Date: 2023
    detail.hit.zdb_id: 2023273-1
    SSG: 3,2
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  • 3
    Online Resource
    Online Resource
    Hindawi Limited ; 2021
    In:  Mobile Information Systems Vol. 2021 ( 2021-5-3), p. 1-9
    In: Mobile Information Systems, Hindawi Limited, Vol. 2021 ( 2021-5-3), p. 1-9
    Abstract: Football is a product in the process of human socialization; it can strengthen the body and enhance the ability of teamwork. The introduction of artificial intelligence into football training is an inevitable trend; this trend must be bound to intensify, but how to apply artificial intelligence to solve the problem of the joint movement estimation method for football players in sports training is still the main difficulty now. The basic principle of football training action pattern recognition is to determine the type of football player’s action by processing and analyzing the movement information obtained by the sensor. Due to the complex movements towards football players and the changeable external environment, there are still many problems with action recognition. Focusing on the detailed classification of different sports modes, this article conducts research on the recognition of the joint movement estimation method for football players in sports training. This paper uses the recognition algorithm based on the multilayer decision tree recognizer to identify the joint movement; the experiment shows that the method used in this paper accurately identified joint movement for football players in sports training.
    Type of Medium: Online Resource
    ISSN: 1875-905X , 1574-017X
    RVK:
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2021
    detail.hit.zdb_id: 2187808-0
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  • 4
    Online Resource
    Online Resource
    Hindawi Limited ; 2021
    In:  Mobile Information Systems Vol. 2021 ( 2021-10-27), p. 1-10
    In: Mobile Information Systems, Hindawi Limited, Vol. 2021 ( 2021-10-27), p. 1-10
    Abstract: The wireless sensor network is an integral part of the physical information system. Disperse sensors through a set of special spaces track and record the natural state of the environment and manage the information collected in a central location. The sensors use wireless connections to create their own networks. Wireless sensor network technology has the advantages of flexible deployment and convenient use and has played an important role in the field of user behavior recognition. By deploying wireless sensor network technology, users can collect daily information, capture users’ behavior habits, and analyze users’ health status. In the deployment and application of this type of technology, it is very important to build an effective model of the logical sequence relationship of the monitored person’s behavior. The sensor data can be sent to the target user through wireless transmission. Action recognition is often based on a single feature for learning and judgment, so there are many difficulties in practical applications. This article aims to study motion shake awareness and action prediction algorithms based on wireless sensor networks. Aiming at the research of human pose recognition algorithm, to optimize the overall performance of the model, this article suggests the use of multimodal input, uses a 2D and 3D network structure, and finally, proposes two network weighted fusion strategies. Aiming at the research of pedestrian motion discrimination, this article offers a behavior prediction algorithm based on multifeature joint learning. The algorithm adds the feature vectors output by gesture recognition and mask prediction and uses a cross-entropy cost function to jointly learn and predict classification. The results of the survey show that the pedestrian gesture recognition and motion recognition algorithm based on the wireless sensor network proposed in this paper has good performance and can be widely used in real scenes such as video surveillance. The accuracy of the gesture recognition algorithm in the UCF101 dataset and the HMDB51 dataset was 96% and 72%, respectively.
    Type of Medium: Online Resource
    ISSN: 1875-905X , 1574-017X
    RVK:
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2021
    detail.hit.zdb_id: 2187808-0
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  • 5
    In: Production and Operations Management, Wiley
    Abstract: Understanding consumers’ engagement and subsequent content consumption behavior in the mobile context is critical to mobile app providers. In this paper, we develop a Hidden Markov Model (HMM) to capture the dynamics of users’ engagement states and consumption decisions on the number of books/chapters read and the amount of money spent. Our method allows us to simultaneously capture three interdependent usage behaviors using a single integrated model and identify the impact of content loading time and previous reading behavior on users’ engagement dynamics and content consumption. We calibrate the model using a tap stream data set of individual users’ reading activities on a mobile app. Our analysis reveals three distinct engagement states, a low state with inactive users, a medium state with users sampling books, and a high state with users reading intensively. Furthermore, we find that content loading time has higher negative impacts on high‐state users in state transitioning than medium‐state users. In contrast, the days that elapsed since the last visit has a similar negative impact on the users in the high and medium states. The effect of usage frequency on users in state transitioning is always positive. We have also identified the weekend effect and social influence on users’ reading outcomes. Finally, our simulations quantify the shortened content loading time and the days elapsed since the last visit on users’ engagement dynamics and content consumption decisions, which generate important managerial implications for app providers.
    Type of Medium: Online Resource
    ISSN: 1059-1478 , 1937-5956
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2151364-8
    detail.hit.zdb_id: 1108460-1
    SSG: 3,2
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  • 6
    Online Resource
    Online Resource
    Wiley ; 2022
    In:  International Transactions in Operational Research
    In: International Transactions in Operational Research, Wiley
    Abstract: Group‐buying price mechanism is useful for online sales since the 1990s, yet it has not been widely applied in the business‐to‐business (B2B) environment. In this study, we consider a B2B supply chain with one supplier and multiple retailers. With our analytical model, we compare the supplier's profit under the flat price mechanism, individual quantity discount mechanism, and group‐buying price mechanism. The results show that when retailers are homogeneous, the individual quantity discount mechanism is the best choice for the supplier. In situations with heterogeneous retailers (i.e., a large retailer and multiple small retailers), the group‐buying price mechanism is the best choice when there is a moderate difference in market scale between retailers. However, the condition is quite strict. These findings also hold with a step‐wise price menu set by the supplier. Our conclusions explain why the group‐buying price mechanism is not widely used in the B2B environment and provide some advice for the supplier on how to choose suitable pricing mechanisms.
    Type of Medium: Online Resource
    ISSN: 0969-6016 , 1475-3995
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2019815-2
    SSG: 3,2
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  • 7
    Online Resource
    Online Resource
    Hindawi Limited ; 2022
    In:  Mobile Information Systems Vol. 2022 ( 2022-8-27), p. 1-11
    In: Mobile Information Systems, Hindawi Limited, Vol. 2022 ( 2022-8-27), p. 1-11
    Abstract: Artificial intelligence refers to a simulation extension and expansion technology that has found its presence in various applications and research domains. Artificial intelligence allows the related theories to portray similar to human intelligence. It combines developments in several fields, including computer science, statistics, and linguistics. The research objects of data visualization can be divided into three aspects: data, visualization technology, and visualization performance. This paper aims to study the data visualization design of artificial intelligence in urban intelligent transportation scenarios. It predicts the traffic flow via the traffic control method using neural network. It provides an effective way for timely dredging and alleviating problems, such as traffic jams and establishing alternative routes. This paper firstly analyzes the methods of artificial intelligence, traffic control methods, and data visualization and then designs the visualization based on artificial intelligence in traffic scenarios. By comparing the accuracy analysis of different models, the experimental results show that the error of the peak traffic flow is less than 10% and the lowest error value is 2.2%.
    Type of Medium: Online Resource
    ISSN: 1875-905X , 1574-017X
    RVK:
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2187808-0
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  • 8
    Online Resource
    Online Resource
    Hindawi Limited ; 2022
    In:  Mobile Information Systems Vol. 2022 ( 2022-8-8), p. 1-9
    In: Mobile Information Systems, Hindawi Limited, Vol. 2022 ( 2022-8-8), p. 1-9
    Abstract: In order to explore the role of agricultural genetic breeding technology in elm cultivation, this paper improves the big data technology. According to the test data verification requirements, based on the Monte Carlo idea, a TDSTI statistical test method is proposed, and a set of judgment criteria for the significance of spatio-temporal autocorrelation is given. Moreover, in order to make the observed variables of the time lag series have a clearer geographical significance, the obtained spatio-temporal weight matrix is subjected to row standardization. In addition, this paper combines big data technology and agricultural genetic breeding technology to study the cultivation of elm trees. Finally, this paper conducts a correlation analysis between the distance matrix generated by cluster analysis of leaf shape traits and the distance matrix generated by cluster analysis of SSR molecular markers. The research results show that agricultural genetic breeding technology can play an important role in the cultivation of elm.
    Type of Medium: Online Resource
    ISSN: 1875-905X , 1574-017X
    RVK:
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2187808-0
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  • 9
    Online Resource
    Online Resource
    Elsevier BV ; 2024
    In:  Research in International Business and Finance Vol. 69 ( 2024-04), p. 102277-
    In: Research in International Business and Finance, Elsevier BV, Vol. 69 ( 2024-04), p. 102277-
    Type of Medium: Online Resource
    ISSN: 0275-5319
    RVK:
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2024
    detail.hit.zdb_id: 2165501-7
    detail.hit.zdb_id: 424514-3
    SSG: 3,2
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  • 10
    Online Resource
    Online Resource
    Informa UK Limited ; 2021
    In:  Journal of Small Business Management Vol. 59, No. 4 ( 2021-07-04), p. 675-699
    In: Journal of Small Business Management, Informa UK Limited, Vol. 59, No. 4 ( 2021-07-04), p. 675-699
    Type of Medium: Online Resource
    ISSN: 0047-2778 , 1540-627X
    RVK:
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2021
    detail.hit.zdb_id: 2046010-7
    detail.hit.zdb_id: 860752-7
    SSG: 3,2
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