For understanding the reasons that caused the degradation of water quality in lower order streams, systematic sampling was conducted at different spatial locations aiong the low order streams （1 st-5th） of Ashihe Ri...For understanding the reasons that caused the degradation of water quality in lower order streams, systematic sampling was conducted at different spatial locations aiong the low order streams （1 st-5th） of Ashihe River continuum in Maoershan Experimental Forest of Northeast Forestry University, Sharlgzhi City, Heilongjiang Province, China. The indexes of stream water quality, i.e., the pH, dissolved oxygen（DO）, turbidity, temperature, PO43-P, NO3-N and NH4^＋-N concentrations, total dissolved inorganic nitrogen （TDIN-N, including concentrations of NO3^＋-N and NH4^＋-N）, and total phosphorus （inorganic and organic phosphorous, TP） were measured and analyzed. The stream order, related environmental settings and land-use type were recorded for each sampling location. The indexes of stream water quality at different locations with different stream orders and land use types were compared by ANOVA analysis. The indexes of stream water quality at different sampling locations were analyzed by Hierarchical cluster analysis. Result showed that water quality had significant difference in different stream orders and land use types; some locations with different stream features （stream order and land use type） were grouped into same clusters, indicating that random disturbances produced the variations in water quality, which made the spatial variances of stream water quality inconsistent with the general rules.展开更多
The publication of the famous novel The Sound and The Fury projects the long-enduring reputation of William Faulkner as a household American writer in every nook and cranny of the world.Just in this novel,Faulkner emp...The publication of the famous novel The Sound and The Fury projects the long-enduring reputation of William Faulkner as a household American writer in every nook and cranny of the world.Just in this novel,Faulkner employs the literary device of stream of consciousness and makes a good play with time and order to his own joy,which makes it an outstanding literary feature in the novel.In this essay,the unusual conceptions of time and order in the novel are tentatively probed mainly from the following three perspectives:1) the initiative for Faulkner creating the novel as a novel against time and order.2) the disordered arrangement as an artistic device——the optimum key to delivering the story.3) the potential order underlying the seeming disorder in the novel.展开更多
The application of Geographic Information System(GIS)methodologies offers valuable insights into the hydrological behaviour of watersheds through the analysis of their morphometric attributes.This study focuses on the...The application of Geographic Information System(GIS)methodologies offers valuable insights into the hydrological behaviour of watersheds through the analysis of their morphometric attributes.This study focuses on the Goriganga River,a major tributary of the Ganga River system,by conducting a detailed morphometric analysis using Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER)imagery with 30 m resolution,alongside survey of India topographic sheets.Thirty-two water-sheds within the river basin were delineated to calculate linear,areal,and relief morphometric parameters,covering a total drainage area of 2,183.11 km^(2).The drainage pattern,primarily dendritic to sub-dendritic,is shaped by the region's topography,geological structure,and precipitation patterns.Classified as a 6th-order basin,the drainage density ranges from 1.21 km/km^(2)to 1.96 km/km^(2),underlining the significant influence of the regional physiography and lithological composition on the stream ordering.Relief analysis suggests the basin is in an early developmental stage,characterised by varying slope gradients and a low to moder-ate risk of soil erosion.The basin's hydrogeology is complex,with aquifer distribution primarily governed by lithological factors.Limestone,due to its high permeability and karst features,forms the principal aquifer,although it is susceptible to contamination.In contrast,groundwater potential in the Basement Gneissic Complex and Schist regions is limited to structurally controlled zones,while shale acts as an aquitard.The basin's heterogeneous aquifer characteristics emphasize the need for localized groundwater management strategies tailored to specific lithological units.The integration of remote sensing and GIS techniques effectively delineates the basin's morphometric and hydrogeological characteristics,providing critical information for the development of sustainable water resource management strategies.展开更多
A five-step method framework is proposed by combing improved value stream mapping with simulation and design of experiment(DOE) to design the lean system for engineer-to-order(ETO) manufacturing,and lean practice impl...A five-step method framework is proposed by combing improved value stream mapping with simulation and design of experiment(DOE) to design the lean system for engineer-to-order(ETO) manufacturing,and lean practice implementation path is decided.Meanwhile,a real company case like HAVC is taken to display the application of the framework.The results indicate that compared to supermarket Kanban,constant work in process(Conwip) has the broader applicability in ETO manufacturing and the critical business process,like purchasing of key parts,and has more significant effects on value stream performance.Therefore,it should have priority in lean practice implementation.展开更多
Estimating the cycle time of each job over event streams in intelligent manufacturing is critical. These streams include many long-lasting events which have certain durations. The temporal relationships among those in...Estimating the cycle time of each job over event streams in intelligent manufacturing is critical. These streams include many long-lasting events which have certain durations. The temporal relationships among those interval-based events are often complex. Meanwhile, network latencies and machine failures in intelligent manufacturing may cause events to be out-of-order. This topic has rarely been discussed because most existing methods do not consider both interval-based and out-of-order events. In this work, we analyze the preliminaries of event temporal semantics. A tree-plan model of interval-based out-of-order events is proposed. A hybrid solution is correspondingly introduced. Extensive experimental studies demonstrate the efficiency of our approach.展开更多
Several kinds of stream ciphers—complementary sequences of period sequences,partial sum of period sequences,inverse order sequences and finitely generated sequences,arestudied by using techniques of generating functi...Several kinds of stream ciphers—complementary sequences of period sequences,partial sum of period sequences,inverse order sequences and finitely generated sequences,arestudied by using techniques of generating functions.Their minimal polynomials,periods,as wellas generating functions are given.As to finitely generated sequences,the change of their linearcomplexity profiles as well as the relationship between the two generated sequences usder thecase in which the degree of connected polynomials are fixed,are discussed.展开更多
基金This research was supported by a grant of the National Nature Science Foundation of China （No. 30370277）.
文摘For understanding the reasons that caused the degradation of water quality in lower order streams, systematic sampling was conducted at different spatial locations aiong the low order streams （1 st-5th） of Ashihe River continuum in Maoershan Experimental Forest of Northeast Forestry University, Sharlgzhi City, Heilongjiang Province, China. The indexes of stream water quality, i.e., the pH, dissolved oxygen（DO）, turbidity, temperature, PO43-P, NO3-N and NH4^＋-N concentrations, total dissolved inorganic nitrogen （TDIN-N, including concentrations of NO3^＋-N and NH4^＋-N）, and total phosphorus （inorganic and organic phosphorous, TP） were measured and analyzed. The stream order, related environmental settings and land-use type were recorded for each sampling location. The indexes of stream water quality at different locations with different stream orders and land use types were compared by ANOVA analysis. The indexes of stream water quality at different sampling locations were analyzed by Hierarchical cluster analysis. Result showed that water quality had significant difference in different stream orders and land use types; some locations with different stream features （stream order and land use type） were grouped into same clusters, indicating that random disturbances produced the variations in water quality, which made the spatial variances of stream water quality inconsistent with the general rules.
文摘The publication of the famous novel The Sound and The Fury projects the long-enduring reputation of William Faulkner as a household American writer in every nook and cranny of the world.Just in this novel,Faulkner employs the literary device of stream of consciousness and makes a good play with time and order to his own joy,which makes it an outstanding literary feature in the novel.In this essay,the unusual conceptions of time and order in the novel are tentatively probed mainly from the following three perspectives:1) the initiative for Faulkner creating the novel as a novel against time and order.2) the disordered arrangement as an artistic device——the optimum key to delivering the story.3) the potential order underlying the seeming disorder in the novel.
文摘The application of Geographic Information System(GIS)methodologies offers valuable insights into the hydrological behaviour of watersheds through the analysis of their morphometric attributes.This study focuses on the Goriganga River,a major tributary of the Ganga River system,by conducting a detailed morphometric analysis using Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER)imagery with 30 m resolution,alongside survey of India topographic sheets.Thirty-two water-sheds within the river basin were delineated to calculate linear,areal,and relief morphometric parameters,covering a total drainage area of 2,183.11 km^(2).The drainage pattern,primarily dendritic to sub-dendritic,is shaped by the region's topography,geological structure,and precipitation patterns.Classified as a 6th-order basin,the drainage density ranges from 1.21 km/km^(2)to 1.96 km/km^(2),underlining the significant influence of the regional physiography and lithological composition on the stream ordering.Relief analysis suggests the basin is in an early developmental stage,characterised by varying slope gradients and a low to moder-ate risk of soil erosion.The basin's hydrogeology is complex,with aquifer distribution primarily governed by lithological factors.Limestone,due to its high permeability and karst features,forms the principal aquifer,although it is susceptible to contamination.In contrast,groundwater potential in the Basement Gneissic Complex and Schist regions is limited to structurally controlled zones,while shale acts as an aquitard.The basin's heterogeneous aquifer characteristics emphasize the need for localized groundwater management strategies tailored to specific lithological units.The integration of remote sensing and GIS techniques effectively delineates the basin's morphometric and hydrogeological characteristics,providing critical information for the development of sustainable water resource management strategies.
文摘A five-step method framework is proposed by combing improved value stream mapping with simulation and design of experiment(DOE) to design the lean system for engineer-to-order(ETO) manufacturing,and lean practice implementation path is decided.Meanwhile,a real company case like HAVC is taken to display the application of the framework.The results indicate that compared to supermarket Kanban,constant work in process(Conwip) has the broader applicability in ETO manufacturing and the critical business process,like purchasing of key parts,and has more significant effects on value stream performance.Therefore,it should have priority in lean practice implementation.
文摘Estimating the cycle time of each job over event streams in intelligent manufacturing is critical. These streams include many long-lasting events which have certain durations. The temporal relationships among those interval-based events are often complex. Meanwhile, network latencies and machine failures in intelligent manufacturing may cause events to be out-of-order. This topic has rarely been discussed because most existing methods do not consider both interval-based and out-of-order events. In this work, we analyze the preliminaries of event temporal semantics. A tree-plan model of interval-based out-of-order events is proposed. A hybrid solution is correspondingly introduced. Extensive experimental studies demonstrate the efficiency of our approach.
文摘Several kinds of stream ciphers—complementary sequences of period sequences,partial sum of period sequences,inverse order sequences and finitely generated sequences,arestudied by using techniques of generating functions.Their minimal polynomials,periods,as wellas generating functions are given.As to finitely generated sequences,the change of their linearcomplexity profiles as well as the relationship between the two generated sequences usder thecase in which the degree of connected polynomials are fixed,are discussed.
