Suchergebnisse

Who counts as Asian Americans? Previous research with survey data shows that South Asian Americans are less likely to be recognized as Asian Americans compared with East Asian Americans. Using a national news dataset, this visualization presents annual trends in the mentions of three subethnicities (East Asian, South Asian, and Southeast Asian) when discussing Asian Americans from 1977 to 2022. East Asians are the most likely to be mentioned when discussing Asian Americans compared with South Asians and Southeast Asians. The patterns are consistent over time. This suggests that such disparity among Asian subethnic groups is institutionalized in news media.

The study of street network patterns is beneficial in understanding the layout or physical form of a city. Many studies have analyzed street network patterns, but the similarity and/or difference of street network patterns across a country or region are rarely quantitatively understood. To fill this gap, this research proposes a quantitative analysis of street network patterns nationwide. Specifically, the street network patterns across a country or region were first mapped, and then the relationship between such patterns and various landscape factors (calculated based on global open data) was quantitatively investigated by employing three regression models (ordinary least squares, spatial lag model, and spatial error model). Not only the whole region of China but also its subregions were used as study areas, which involved a total of 362 prefecture-level cities and 2081 built-up areas for analysis. Results showed that (1) similar street network patterns are spatially aggregated; (2) a number of factors, including both land-cover and terrain factors, are found to be significantly correlated with street network patterns; and (3) the spatial lag model is preferred in most of the application scenarios. Not only the analytical method and data can be applied to other countries and regions but also these findings are useful for understanding street network patterns and their associated urban forms in a country or region.

The objective of this study is to provide evidence for the existence of threshold effects in trade openness, which affects the female labour force participation rate (FLFPR) in Asian countries. The authors employ the proportion of export, import and total trade volume to gross domestic product to denote export and import dependency and trade openness, respectively. The panel threshold regression results indicate that there exists an optimal value in the correlation between trade openness and FLFPR below which an increase in trade openness will enhance the FLFPR; an adverse relationship exists when trade openness exceeds the threshold value. This relationship is attributed to the trade-off between the cost reduction effect and the technology channel. Furthermore, the authors further categorise trade openness into export and import dependency. The findings reveal that export dependency also has a single threshold effect on FLFPR, while import dependency exerts a negative effect on FLFPR regardless of threshold effect. Therefore, the government could promote female participation in the labour force by regulating the export policy.

Tunica Interna endothelial cell kinase (Tie2)-expressing macrophages (TEMs) are a subgroup of tumor-associated macrophages that are associated with a poor prognosis in numerous types of cancer. The present study aimed to assess the prognostic impact of Tie2 expression in gastric cancer tissues. Between January 2009 and December 2009, 76 newly diagnosed patients with gastric cancer at the Southwest Hospital, Third Military Medical University (Chongqing, China) were enrolled. TEMs were detected using immunohistochemistry. Tie2, cluster of differentiation (CD)68 and carbonic anhydrase IX (CAIX) were analyzed using immunohistochemistry and immunofluorescent microscopy. Tie2 protein expression was analyzed using western blot analysis in hypoxic and normoxic gastric cancer tissues. The number of TEMs positively staining for Tie2 increased with the tumor-node-metastasis (TNM) stage: 0, 53.9, 75.6 and 100% in stages I, II, III and IV, respectively (P<0.001). Tumor size and lymph node involvement were significantly associated with the presence of Tie2 in the tumor stroma (P<0.001). There was no significant difference between Tie2 and CAIX, irrespective of how the patients were grouped (tumor size, lymph node involvement, TNM stage or histological grade). Tie2 protein expression was increased in the hypoxic regions of gastric tumors.Tie2 and CD68 expression colocalized in hypoxic and normoxic gastric cancer tissues. The 1-, 2- and 3-year recurrence rates of the TEM-positive group were 31.4, 56.9 and 66.7%, respectively, as compared with 8, 28 and 48%, respectively, for the TEM-negative group (P<0.05). In the TEM-negative group, 2 patients succumbed to the disease, as compared with 21 patients in the TEM-positive group (P<0.05). Therefore, high quantities of TEMs, represented by Tie2 expression, in gastric tumors may be associated with poor survival.