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On the basis of the Prandtl boundary layer theory and an improved perturbation method, the process of laminar flow bifurcating into the Southwest China vortex (SWV) in the Hengduan Mountains is studied. The results show that the formation of SWV is mainly determined by the speed of incoming airflow in the direction of the main axis of the Hengduan Mountains. The vortex is generated in the leeward area of the Hengduan Mountains when the speed of incoming airflow is greater than the critical velocity. Moreover, it means that the laminar flow bifurcates into a vortex. The formation position of the SWV is mainly determined by the relative position of the incoming airflow in the windward area of the Hengduan Mountains and the main axis of the Hengduan Mountains. The seasonal distribution of SWVs is determined by both the velocity of the incoming airflow and the relative position of the incoming airflow to the main axis of the Hengduan Mountains. These findings are consistent with the SWV observation facts, which not only adequately explain the physical formation mechanisms and processes of SWVs, but also present the formation location and seasonal distribution of SWVs. Meanwhile, a solution from laminar to vortex in circumflow motion is also presented. [ABSTRACT FROM AUTHOR]

How do organizations respond to institutional complexity arising out of both domestic and global forces? We focus on corporate social responsibility (CSR) reporting in China and empirically test the effects of both domestic institutional connections and world cultural linkage. We analyze the adoption of CSR reports compiled by 3,757 listed firms in China from 2006 to 2020 via a discrete‐time event history framework. We seek to explain the adoption of two different forms of CSR reports: those explicitly referencing global models and those written under the guidance of government agencies. To what extent is the adoption of CSR reports attributable to political signaling from the party‐government nexus or world culture pressures? Do the influences operate similarly for the reports based on national governmental directives and those more explicitly linked to world society? Our findings conclude that the firms' global connectedness better explains the adoption of Global Reporting Initiative‐based reports. In contrast, their linkage to domestic political processes, especially at the central level, is well attuned to the versions promoted by government agencies. [ABSTRACT FROM AUTHOR]

How do organizations respond to institutional complexity arising out of both domestic and global forces? We focus on corporate social responsibility (CSR) reporting in China and empirically test the effects of both domestic institutional connections and world cultural linkage. We analyze the adoption of CSR reports compiled by 3,757 listed firms in China from 2006 to 2020 via a discrete‐time event history framework. We seek to explain the adoption of two different forms of CSR reports: those explicitly referencing global models and those written under the guidance of government agencies. To what extent is the adoption of CSR reports attributable to political signaling from the party‐government nexus or world culture pressures? Do the influences operate similarly for the reports based on national governmental directives and those more explicitly linked to world society? Our findings conclude that the firms' global connectedness better explains the adoption of Global Reporting Initiative‐based reports. In contrast, their linkage to domestic political processes, especially at the central level, is well attuned to the versions promoted by government agencies. [ABSTRACT FROM AUTHOR]

Objective: The objective of this research was to explore the difference and correlation of the morphological and hemodynamic features between sidewall and bifurcation aneurysms in anterior circulation arteries, utilizing computational fluid dynamics as a tool for analysis., Methods: In line with the designated inclusion criteria, this study covered 160 aneurysms identified in 131 patients who received treatment at Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, China, from January 2021 to September 2022. Utilizing follow-up digital subtraction angiography (DSA) data, these cases were classified into two distinct groups: the sidewall aneurysm group and the bifurcation aneurysm group. Morphological and hemodynamic parameters in the immediate preoperative period were meticulously calculated and examined in both groups using a three-dimensional DSA reconstruction model., Results: No significant differences were found in the morphological or hemodynamic parameters of bifurcation aneurysms at varied locations within the anterior circulation. However, pronounced differences were identified between sidewall and bifurcation aneurysms in terms of morphological parameters such as the diameter of the parent vessel (D vessel ), inflow angle (θ F ), and size ratio (SR), as well as the hemodynamic parameter of inflow concentration index (ICI) (P<0.001). Notably, only the SR exhibited a significant correlation with multiple hemodynamic parameters (P<0.001), while the ICI was closely related to several morphological parameters (R>0.5, P<0.001)., Conclusions: The significant differences in certain morphological and hemodynamic parameters between sidewall and bifurcation aneurysms emphasize the importance to contemplate variances in threshold values for these parameters when evaluating the risk of rupture in anterior circulation aneurysms. Whether it is a bifurcation or sidewall aneurysm, these disparities should be considered. The morphological parameter SR has the potential to be a valuable clinical tool for promptly distinguishing the distinct rupture risks associated with sidewall and bifurcation aneurysms., (© 2024. Huazhong University of Science and Technology.)

Internal phosphorus recycling (IPR) is an important nutrient source driving algal growth and eutrophication in lakes. The complexity of eutrophication behaviours caused by high IPR complicates lake management and undermines restoration efforts. Hence, knowledge about the possible types of bifurcation behaviours caused by high IPR is essential for effective and sustainable lake eutrophication management. For this purpose, numerical bifurcation analysis is performed on an algae‑phosphorus model to investigate how IPR drives complex and rich eutrophication behaviours in two tropical and two subtropical lakes. The two tropical lakes are Tasik Harapan and Sunway Lagoon in Malaysia, while the two subtropical lakes are Lake Fuxian and Lake Taihu in China. For each specified level of IPR, co-dimension one bifurcation analysis is performed by means of XPPAUT. Co-dimension two bifurcation analysis is then carried out by means of MatCont. At low IPR, Lake Fuxian exhibits reversible behaviour, accompanied by higher external phosphorus loading (EPL) thresholds. Lake Fuxian is also more conducive to stable equilibrium and its lake dynamics are easily predictable. At moderate IPR, Sunway Lagoon is likely to exhibit stable equilibrium, accompanied by possible shifting between two stable steady states (hysteresis behaviour) and oscillations. With higher IPR, Lake Taihu and Tasik Harapan are prone to irreversibility, accompanied by lower EPL thresholds. Because of increased complexity in lake dynamics in Lake Taihu and Tasik Harapan, small changes in EPL or in algal mortality rates could trigger various transitions in lake dynamics. Overall, high IPR can trigger unexpected sharp increases in algal concentration and can reduce the resilience of an oligotrophic lake. For shallow lakes, high IPR would cause unexpected sharp increases in algal concentrations, undermine resilience of lakes, complicate lake management, and delay lake recovery process. • Internal phosphorus recycling induces rich and complex lake dynamics. • Internal phosphorus recycling strongly governs lake reversibility. • Internal phosphorus recycling triggers a sharp increase in algal concentration. • Internal phosphorus recycling reduces resilience of an oligotrophic lake. • Reduction of internal phosphorus recycling is vital for effective lake management. [ABSTRACT FROM AUTHOR]

Based on eighteen months of fieldwork in a county in Southeast China, this article identifies three tendencies that have appeared in the revitalization of temple-based popular religion in the post-Mao period. These three tendencies—women taking more central roles in popular religion, the bifurcation between the ever increasing popularity and prosperity of a small number of temples and the decline in the majority of small village temples, and the tendency of popular religion temples to acquire Buddhist features—have consequently caused the character and terrain of popular religion to diverge greatly from the pre-1949 past. To explain these changes, the article argues that we have to come to terms with the two faces of popular religion: the communal/mandatory dimension and the individual/voluntary dimension that is largely associated with female devotees. All three tendencies have been taking place when popular religion temples’ bonds with village communities attenuated and their voluntary dimension moved to the forefront. The article attributes the weakening of the communal dimension of popular religion temples to the restructuring of rural society by the Maoist political campaigns and the post-Mao marketization. [ABSTRACT FROM AUTHOR]

Abstract: This paper is devoted to the study of a generalized Chinese business cycle by nonlinear dynamical method. Firstly, we establish a Chinese economic cycle model based on Goodwin model, and then discuss the point estimation and confidence interval of the model’s parameter values based on the historical data. At last, we study the bifurcation and chaotic behavior of the model. The results show that the marginal consumption has great influence on the development of Chinese economic. The Chinese economic development will run into the stable periodic wave when the marginal consumer is greater than 0.5. Furthermore, the greater the marginal consumption is, the more stable the economic development is. [Copyright &y& Elsevier]

In this paper, the chaotic characteristic of the Sprott N system with parameter is studied in theoretical analysis and numerical simulations, and abundant dynamical behavior is presented. When the parameter β = 1:9, the system exist chaotic attractor. The abundance dynamical behavior of the system is presented by the global bifurcation graph and the Lyapunov exponent. In order to realize the full state hybrid projective synchronization (FSHPS) of the system, Smarandache controller is design. Numerical simulations show that the controller works well. [ABSTRACT FROM AUTHOR]

Background: Comparisons between one- and two-stent strategies for unprotected left main (UPLM) coronary bifurcation disease have yielded inconsistent results. This large-sample, long-term follow-up study comparatively assessed stenting strategy impact in patients with distal left main disease., Methods: Totally, 1,528 consecutive patients underwent left main percutaneous coronary intervention in a single center from January 2004 to December 2010 were enrolled; among them, 1033 patients with distal UPLM lesions treated by one (n = 661) or two (n = 372) drug-eluting stent (DES) technique were comparatively analyzed. Primary outcome was rate of major adverse cardiovascular events (MACE), defined as a composite of death, myocardial infarction (MI), and target vessel revascularization (TVR)., Results: Overall, baseline SYNTAX score was low-intermediate (one stent: 25 ± 6 vs. two stents: 26 ± 5, P = 0.02), and mean clinical SYNTAX score was similar between groups (one stent: 30 ± 22 vs. two stents: 31 ± 22, P = 0.47). Final kissing balloon was successfully achieved in most of the patients treated with two-stent technique (one stent: 30.9% vs. two stents: 96.0%, P < 0.01), and use of intravascular ultrasound was also more common in them (one stent: 32.2% vs. two stents: 53.8%, P < 0.01). At mean 4 years follow-up, rates of MACE (one stent: 9.2% vs. two stents: 11.6%, P = 0.23), death, MI, and TVR were similar between groups. In multivariate propensity-matched regression analysis, two-stent technique was not predictive of MACE., Conclusions: For patients with distal UPLM disease and low-intermediate SYNTAX score treated with DES, clinical outcomes appear similar between optimal two-stent implantation and one-stent strategy. © 2015 Wiley Periodicals, Inc., (© 2015 Wiley Periodicals, Inc.)