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Gao Jie,Zheng Mingliang 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.10
It aims at group incentive and alliance scale of collaborative logistics alliance. It defines the connotation of collaborative logistics alliance based on theories related to domestic and overseas logistics alliance and it establishes group incentive model under single alliance leader and multiple alliance leaders based on double layer principal-agent theory. Solution shows that, in group incentive model of logistics alliance, incentive coefficient under one alliance leader enterprise is the same as that under alliance leader decision-making system containing several enterprises. Group scale of logistics alliance can be determined when certainty equivalent wealth of alliance leader decision-making system and alliance member enterprise is equal to their respective retained income.
Analytical Solutions for a Double ring-shaped Noncentral Potential in D-dimensions
Jie Gao,Min-Cang Zhang 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.69 No.7
In the present study, a generalized double ring-shaped Coulomb noncentral potential is proposed, and the D-dimensional Schr¨odinger equation with this potential is examined in hyperspherical coordinates. The Nikiforov-Uvarov (N-U) method is applied to obtain the D-dimensional energy eigenvalues and the corresponding eigenfunctions. The angular/radial wavefunction is written in terms of Jacobi/Laguerre polynomials.
( Jie Gao ),( Shunyi Feng ),( Yong Li ) 대한내과학회 2018 The Korean Journal of Internal Medicine Vol.33 No.6
Background/Aims: This study tested the hypothesis that prolonged low-dose cyclophosphamide (CTX) treatment after pulse therapy attenuate paraquat (PQ)-induced lung injury in rats. Methods: PQ (25 mg/kg) was administered intraperitoneally to induce PQ-intoxicated rat model. The rats were randomly divided into four groups: control group (1 mL/day saline solution for 14 days), PQ group (1 mL/day saline solution for 14 days after PQ exposure), pulse group (15 mg/kg/day CTX in 1 mL of saline solution for 2 days and subsequent 1 mL/day saline solution for 12 days), and prolonged low-dose group (15 mg/kg/day CTX in 1 mL of saline solution for 2 days and subsequent 1.5 mg/kg/day CTX in 1 mL of saline solution for 12 days). A 14- day follow-up was conducted to determine the survival rat, and lung hydroxyproline (HYP), wet-to-dry weight ratios (W/Dc) and histopathological changes were evaluated. Results: Results showed similar survival rate (55% vs. 50%, p > 0.05) between prolonged low-dose and pulse groups. Lung W/Dc (4.94 ± 0.38 vs. 5.47 ± 0.28, p < 0.01), HYP (3.34 ± 0.29 μg/mg vs. 3.65 ± 0.19 μg/mg, p < 0.001), and fibrosis score (2.69 ± 0.84 vs. 3.13 ± 0.63, p < 0.05) were lower in prolonged low-dose group than those in the pulse group. Conclusions: These findings suggested prolonged low-dose CTX treatment after pulse therapy could attenuate PQ-induced lung injury in rats.
Jie Gao,Wanli Liu,Jianlin Li,Ke Yuan 한국무역학회 2022 Journal of Korea trade Vol.26 No.5
Purpose – This study aims to analyze the influence of South Korea’s outward foreign direct investment (OFDI) under the effect of both multinational enterprises’ (MNEs) investment motivation and host country institutions. Some suggestions are put forward with regard to South Korean MNEs participating in and integrating into the fierce and changeable world of international market competition. Design/methodology – The basic hypotheses are that MNEs’ investment motivations and the host country’s superior institutions both boost South Korea’s OFDI in those host countries. South Korea’s OFDI is divided into investment choice stage and investment scale stage. A Heckman two-stage selection model is established for empirical analysis, using the panel data of South Korea’s OFDI and related variables, from 2002 to 2019. Findings – (1) The influence on the investment scale of South Korea’s OFDI is more regular and noteworthy than the influence on investment choice. (2) In the investment scale stage, there are obvious motivations to seek markets, labor force and superior technology, but not natural resources. (3) In the investment scale stage, the South Korea’s OFDI is more obviously attracted by the host country’s superior political institutions, economic institutions and legal institutions, but not cultural institutions. Originality/value – The choices of variables and uses of model expand the theoretical basis and empirical method of OFDI research. The results of the empirical study also provide some reference for the transnational investment of South Korean MNEs and the investment policy formulation of the South Korean government.
Buckling and vibrational information of an annular nanosystem covered with piezoelectric layer
Gao, Jie,Nie, Rong,Feng, Yongyi,Luo, Jiawei,Li, Siyu Techno-Press 2022 Advances in nano research Vol.13 No.3
Resently, the use of smart structures has been heightened up rapidly. For this issue, vibration analysis related to a graphene nanoplatelet composite (GPLRC) nanodisk which is attached to a piezoelectric layer and is subjected to thermal loads is explored in the current paper. The formulation of this study is obtained through the energy method and nonlocal strain gradient theory, and then it is solved employing generalized differential quadrature method (GDQM). Halpin-Tsai model in addition to the mixture's rule are utilized to capture the material properties related to the reinforced composite layer. The compatibility conditions are presented for exhibiting the perfect bounding between two layers. The results of this study are validated by employing the other published articles. The impact of such parameters as external voltage, the radius ratio, temperature difference, and nonlocality on the vibrational frequency of the system is investigated in detail.