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Articles by Xuewen Huang
Total Records ( 3 ) for Xuewen Huang
  Xuewen Huang , Li Wang , Lijian Yang and Alexandra N. Kravchenko
  Crop yields are highly variable spatially and temporally as a result of complex interactions among topography, weather conditions, and management practices. The objective of this study was to analyze the effects of management practices on the relationship between crop yields and precipitation and crop yields and topography using 10 yr of yield data from a long-term corn (Zea mays L.)-soybean [Glycine max (L.) Merr.]-wheat (Triticum aestivum L.) rotation experiment in southwest Michigan. The four agronomic treatments studied were chisel plowed with conventional chemical inputs (CT), no-till with conventional chemical inputs (NT), chisel plowed with low chemical input and a winter leguminous cover crop (CTL), and organic-based chisel plowed with a winter leguminous cover crop (CTO). A nonparametric (spline) regression was used to characterize the relationship between the maximal yields, as characteristics of yield potential, and a wetness index (WI), as an integrative characteristic of topographical features related to water flow, and to compare the yield differences between the treatments across a range of the WI values. Variability of yields in NT and CTO systems was better explained by precipitation in early spring and during pollination and grain fill than that in CT and CTL. No-till and CTL tended to produce higher maximal yields than CT at the summit/steep-sloped areas (lower WI), while at intermediate and high WI levels the differences between them were inconsistent. The CTL often produced higher maximal yields than CTO at low and intermediate WI values, while the difference between them was mostly not significant at high WI levels (depression areas). The nonparametric spline regression algorithm used in the study was robust and efficient in comparing the yield differences between treatments across a range of WI values.
  Li He , Xuewen Huang and Xiaobing Liu
  The current situation of ship-repair enterprises was described in this paper. Aiming at the current production management and process of ship-repair enterprises, the modelling based on Multi-Agent System (MAS) was built. It can transmit the information instantly via Order Agent (OA), Manager Agent (MA), Production Agent (PA), Quotation Agent (QA) and Inspection Agent (IA) and realize information sharing. It can realize the integration of data stream, business flow and fund flow.
  Lin Chen , Xiaoli Zeng and Xuewen Huang
  Background and Objective: Intraocular pressure (IOP) elevation is a major risk associated with glaucoma. Timolol is the most frequently used drug in the management of open-angle glaucoma (OG). The objective of this study was to compare the IOP-lowering effects of bimatoprost (BM) with timolol in a Chinese population with OG. Methodology: A total of 480 eyes of indoor patients suffering from OG (study group) and 50 normal eyes of indoor patients not suffering from OG (non-study group) were included in the study. The eyes of the treatment, control and non-study groups were treated with one drop of 0.03% w/v BM once daily, 0.5% w/v timolol maleate (TM) twice daily and water injection twice daily for 3 months, respectively. The IOP was measured at baseline and at 2, 6 weeks and 3 months of treatment. Conjunctival hyperemia, eye irritation, ocular hyperemia, foreign body sensation in eyes, corneal staining, heart rate and systolic and diastolic blood pressures were determined for the study group between baseline and 3 months of treatment. SPSS was use to analyze the data. Analysis of covariance was used to show better efficacy of BM compared with TM. One-way analysis of variance (ANOVA) and the Wilcoxon test were used for insignificant differences of ocular and systematic adverse effects. Results: There was a significant difference in IOP at baseline compared with the end of 3 months of BM (p = 0.00041) and TM (p = 0.0091) treatments. There was no significant difference between conjunctival hyperemia, eye irritation, ocular hyperemia, foreign body sensations in eyes, corneal staining, heart rate and systolic and diastolic blood pressures between baseline and at the end of 3 months of patients treated with BM. There was a significant difference for eyes reaching and maintaining an IOP<18 mmHg between the control group and the treatment group (p = 0.0478). Conclusion: The BM was more effective than timolol in lowering IOP over 3 months of treatment in open-angle glaucoma patients.
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