By using multi-objective analysis method, five architectural tourist sites with Lingnan characteristics were selected. Through the analysis on relevant data obtained by GIS, spatial analysis research had been conducte...By using multi-objective analysis method, five architectural tourist sites with Lingnan characteristics were selected. Through the analysis on relevant data obtained by GIS, spatial analysis research had been conducted on competitiveness of Lingnan distinctive architectural tourist cultural sites in Guangdong Province and some conclusions had been obtained.展开更多
Atmospheric lower-power pulsed microwave argon cold plasma jets are obtained by using coaxial transmission line resonators in ambient air.The plasma jet plumes are generated at the end of a metal wire placed in the mi...Atmospheric lower-power pulsed microwave argon cold plasma jets are obtained by using coaxial transmission line resonators in ambient air.The plasma jet plumes are generated at the end of a metal wire placed in the middle of the dielectric tubes.The electromagnetic model analyses and simulation results suggest that the discharges are excited resonantly by the enhanced electric field of surface plasmon polaritons.Moreover,for conquering the defect of atmospheric argon filamentation discharges excited by 2.45-GHz of continued microwave,the distinctive patterns of the plasma jet plumes can be maintained by applying different gas flow rates of argon gas,frequencies of pulsed modulator,duty cycles of pulsed microwave,peak values of input microwave power,and even by using different materials of dielectric tubes.In addition,the emission spectrum,the plume temperature,and other plasma parameters are measured,which shows that the proposed pulsed microwave plasma jets can be adjusted for plasma biomedical applications.展开更多
Brand construction plays an increasingly important role in marketing and competition in modern agricultural industry. There are problems in brand construction of tropical distinctive agricultural products in Hainan,in...Brand construction plays an increasingly important role in marketing and competition in modern agricultural industry. There are problems in brand construction of tropical distinctive agricultural products in Hainan,including less famous brand products,weak core competence,strengthening declaration and ignoring management as well as imperfect marketing system,therefore resource integration should be stressed to develop famous brand products and technological innovation should be strengthened to promote core competence of enterprise.展开更多
On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,disti...On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,distinctive forestry and distinctive breeding.Based on the analysis,two display indices,domestic comparative advantages index and domestic competitiveness,are selected to analyze the competitiveness of Guangxi distinctive agriculture.The results show that at present the overall competitiveness of Guangxi distinctive agriculture is strong,but its competitiveness is reflected on resource advantages and most of the resources are primary agro-products.Accordingly,in the future,Guangxi distinctive agriculture should adopt non-equilibrium developmental strategy;take the great-leap-forward developmental path;apply modern production elements to increase the competitiveness of Guangxi distinctive agriculture.It should lay stress on "three innovation",which includes organization innovation,developing distinctive agricultural firms ;technology innovation,enlarging the scope and scale of agricultural listed companies;financial fund-raising innovation,transforming traditional distinctive agriculture by using high and new technology.展开更多
In the paper,the concept of circulation industrial chain of distinctive agricultural products is introduced.By using the e-commerce platform,the new industrial chain for the circulation of distinctive agricultural pro...In the paper,the concept of circulation industrial chain of distinctive agricultural products is introduced.By using the e-commerce platform,the new industrial chain for the circulation of distinctive agricultural products on the basis of online transaction is established.In view of the standardization problems in the production and processing section,online exhibition and trade section,after sale section,the related solutions are put forward.In the production and processing sections,the fruit farmers should implement scale cultivation;pick and store fruits according to the local situation;pack fruits by using green package which can represent the features of the brand;establish the agricultural products association.In the section of online exhibition and trade,the identity of network platform should be normalized and the authentication technique and system should be perfected;the unification of product exhibition should be paid attention to;the specialization of negotiation should be intensified and the differences in communication should be represented;the price should be made comprehensively and the reference factors should be diversified;the entrance situation should be legalized and the account should be managed differently.In the after sale section,the business scope of logistics should be expanded and technology should be input;taking the customers as the center,the subsystem of distinctive service standard should be stipulated;the credit evaluation standard and punishment mechanism should be clarified;the customer-related management system should be implemented as well as the supervision mechanism.展开更多
The feasibility of implementing distinctive agriculture insurance in Hebei Province is analyzed from the following aspects covering the support of policies and laws;agricultural products and brands with Hebei distinct...The feasibility of implementing distinctive agriculture insurance in Hebei Province is analyzed from the following aspects covering the support of policies and laws;agricultural products and brands with Hebei distinct;the rich experience of insurance companies;farmers' strong awareness on insurance and farmers' great demand on agricultural insurance.The plights faced by distinctive agricultural insurance are pointed out.It includes weak awareness of farmers on buying insurance;low enthusiasm of insurance company;poor support from the government and backward laws and regulations and so on.The countermeasures on developing distinctive agricultural insurance are put forward.The countermeasures on improving farmers' awareness on buying insurance;innovating the insurance products and services;increasing the support from the government;perfecting the legislation on agricultural insurance should be adopted to develop agricultural insurance.展开更多
With the process of globalization and integration,more and more people tend to be bilingual.Undoubtedly,mastering a second language is significant.This thesis aims to explore how to conquer the difficulties in learnin...With the process of globalization and integration,more and more people tend to be bilingual.Undoubtedly,mastering a second language is significant.This thesis aims to explore how to conquer the difficulties in learning British English sounds through analyzing a British cartoon Peppa Pig.Chapter one begins with the research background,significance and purpose of research.The thesis takes the cartoon Peppa Pig as the starting point to demonstrate the role of distinctive features for Chinese learners to conquer negative transfer.The empirical research could be found in Chapter two,because of requiring to know the concrete circumstance of Chinese learners.Through the collection and analysis of data,we can know these problems which Chinese learners exist in the process of learning British English.Based on the comparison of Chinese and British English,Chapter three clarifies the difficulties in learning British English.As for Chinese learners,mastering distinctive features can promote learners to master British English sounds better than stress and rhythm.Chapter four states the role of the distinctive features in helping conquer Chinese negative transfer in the cartoon Peppa Pig.The final chapter is the conclusion of this thesis and involves a new study for Chinese learners to learn British English sounds under the distinctive features.展开更多
Bangladesh is enriched with beautiful traditional indigenous cultures.Different indigenous peoples with their distinctive existences also considerably create an enhance values and lifestyles to the socio-cultural sect...Bangladesh is enriched with beautiful traditional indigenous cultures.Different indigenous peoples with their distinctive existences also considerably create an enhance values and lifestyles to the socio-cultural sectors of Bangladesh[1].Habitually,these indigenous communities have been comparable to live a large combined family to shear their lifestyles[2].Presently the country has 45 indigenous communities who are living in different locations.All indigenous people within this country have their own style to build their settlements with special techniques to keep them safe and sound from all types of natural and environmental vulnerabilities and also enhance their knowledge of construction techniques and lifestyle.Rakhain is one of them with very small number of people are still living in different regions within the country which have their own system of building techniques.Study found that for several hundreds of years Rakhains are strictly following their indigenous prescription of house and settlement pattern.Although like other indigenous people of this country,they have mountains of problems,such as forced land occupation,lack of security and minority characteristics.Above all,forced political separation has gradually drowned them in the abysmal pit of marginal destiny.This has turned them into exiles in their own land.As a result,many of them are being forced to leave the country and as a result they misplaced their native knowledge and technique to construct.Thus,this study will initially focus on to search for the distinctiveness of their settlement pattern and building construction techniques and lifestyle.Again,in view of their problems,knowledge and experiences concerning archetype,built and house pattern,this study will finally explain how Rakhains accumulate their every distinctiveness from history and for present and future invention.展开更多
China International Home Textile Trade Fair Brief Introduction China International Home Textile Trade Fair will launch at the Shanghai New International Expo Centre as the same ever during 25th-27th
Photodetectors convert photons into current or voltage outputs and are thus widely used for spectroscopy,imaging and sensing.Traditional photodetectors generally show a consistent-polarity response to incident photons...Photodetectors convert photons into current or voltage outputs and are thus widely used for spectroscopy,imaging and sensing.Traditional photodetectors generally show a consistent-polarity response to incident photons within their broadband responsive spectrum.Here we introduced a new type of photodetector employing SnS_(2) nanosheets sensitized with PbS colloidal quantum dots(CQDs)that are not only sensitive(~105AW−1)and broadband(300–1000 nm)but also spectrally distinctive,that is,show distinctive(positive or negative)photoresponse toward incident photons of different wavelengths.A careful mechanism study revealed illumination-modulated Schottky contacts between SnS_(2) nanosheets and Au electrodes,altering the photoresponse polarity toward incident photons of different wavelengths.Finally,we applied our SnS_(2) nanosheet/PbS CQDs hybrid photodetector to differentiate the color temperature of emission from a series of white light-emitting diodes(LEDs),showcasing the unique application of our novel photodetectors.展开更多
New ambient sound absorption material,lightweight isocyanate-based polyimide foam(IBPIF),was fabricated by operable combination between different distinctive acoustic IBPIF.Cellular structure of IBPIF was facilely and...New ambient sound absorption material,lightweight isocyanate-based polyimide foam(IBPIF),was fabricated by operable combination between different distinctive acoustic IBPIF.Cellular structure of IBPIF was facilely and obviously adjusted by increased slurry temperature corresponding to change in distinctive acoustic properties.Moreover,density of all IBPIF kept at only 12-17 kg/m3.With increasing slurry temperature from 0℃to 40℃,cell size and window opening rate gradually increased from 553μm to 791μm and from 6.85%to 58.46%,respectively.In this study,IBPIF generated by slurries at 0℃(marked as PIF-2)and 40℃(marked as PIF-6)showed best and distinctive acoustic behavior in 315-800 Hz and 800-6300 Hz regions,respectively.After acoustic behavior study of combined IBPIF prepared by stitching combination between two distinctive acoustic IBPIFs,results showed that only when PIF-6 sheet used as sound receiving surface even though with thickness of only 10 mm could the combined IBPIF possess the best acoustic level in 800-6300 Hz region as PIF-6.Furtherly,acoustic behavior in 315-800 Hz region could be significantly enhanced by increasing thickness of PIF-2 and could reach or close to the best acoustic level.展开更多
Identifying a device and detecting a change in its position is critical for secure devices management in the Internet of Things(IoT).In this paper,a device management system is proposed to track the devices by using a...Identifying a device and detecting a change in its position is critical for secure devices management in the Internet of Things(IoT).In this paper,a device management system is proposed to track the devices by using audio-based location distinction techniques.In the proposed scheme,traditional cryptographic techniques,such as symmetric encryption algorithm,RSA-based signcryption scheme,and audio-based secure transmission,are utilized to provide authentication,non-repudiation,and confidentiality in the information interaction of the management system.Moreover,an audio-based location distinction method is designed to detect the position change of the devices.Specifically,the audio frequency response(AFR)of several frequency points is utilized as a device signature.The device signature has the features as follows.(1)Hardware Signature:different pairs of speaker and microphone have different signatures;(2)Distance Signature:in the same direction,the signatures are different at different distances;and(3)Direction Signature:at the same distance,the signatures are different in different directions.Based on the features above,amovement detection algorithmfor device identification and location distinction is designed.Moreover,a secure communication protocol is also proposed by using traditional cryptographic techniques to provide integrity,authentication,and non-repudiation in the process of information interaction between devices,Access Points(APs),and Severs.Extensive experiments are conducted to evaluate the performance of the proposed method.The experimental results show that the proposedmethod has a good performance in accuracy and energy consumption.展开更多
Borehole instability in naturally fractured rocks poses significant challenges to drilling.Drilling mud invades the surrounding formations through natural fractures under the difference between the wellbore pressure(P...Borehole instability in naturally fractured rocks poses significant challenges to drilling.Drilling mud invades the surrounding formations through natural fractures under the difference between the wellbore pressure(P w)and pore pressure(P p)during drilling,which may cause wellbore instability.However,the weakening of fracture strength due to mud intrusion is not considered in most existing borehole stability analyses,which may yield significant errors and misleading predictions.In addition,only limited factors were analyzed,and the fracture distribution was oversimplified.In this paper,the impacts of mud intrusion and associated fracture strength weakening on borehole stability in fractured rocks under both isotropic and anisotropic stress states are investigated using a coupled DEM(distinct element method)and DFN(discrete fracture network)method.It provides estimates of the effect of fracture strength weakening,wellbore pressure,in situ stresses,and sealing efficiency on borehole stability.The results show that mud intrusion and weakening of fracture strength can damage the borehole.This is demonstrated by the large displacement around the borehole,shear displacement on natural fractures,and the generation of fracture at shear limit.Mud intrusion reduces the shear strength of the fracture surface and leads to shear failure,which explains that the increase in mud weight may worsen borehole stability during overbalanced drilling in fractured formations.A higher in situ stress anisotropy exerts a significant influence on the mechanism of shear failure distribution around the wellbore.Moreover,the effect of sealing natural fractures on maintaining borehole stability is verified in this study,and the increase in sealing efficiency reduces the radial invasion distance of drilling mud.This study provides a directly quantitative prediction method of borehole instability in naturally fractured formations,which can consider the discrete fracture network,mud intrusion,and associated weakening of fracture strength.The information provided by the numerical approach(e.g.displacement around the borehole,shear displacement on fracture,and fracture at shear limit)is helpful for managing wellbore stability and designing wellbore-strengthening operations.展开更多
The deformation and fracture evolution mechanisms of the strata overlying mines mined using sublevel caving were studied via numerical simulations.Moreover,an expression for the normal force acting on the side face of...The deformation and fracture evolution mechanisms of the strata overlying mines mined using sublevel caving were studied via numerical simulations.Moreover,an expression for the normal force acting on the side face of a steeply dipping superimposed cantilever beam in the surrounding rock was deduced based on limit equilibrium theory.The results show the following:(1)surface displacement above metal mines with steeply dipping discontinuities shows significant step characteristics,and(2)the behavior of the strata as they fail exhibits superimposition characteristics.Generally,failure first occurs in certain superimposed strata slightly far from the goaf.Subsequently,with the constant downward excavation of the orebody,the superimposed strata become damaged both upwards away from and downwards toward the goaf.This process continues until the deep part of the steeply dipping superimposed strata forms a large-scale deep fracture plane that connects with the goaf.The deep fracture plane generally makes an angle of 12°-20°with the normal to the steeply dipping discontinuities.The effect of the constant outward transfer of strata movement due to the constant outward failure of the superimposed strata in the metal mines with steeply dipping discontinuities causes the scope of the strata movement in these mines to be larger than expected.The strata in the metal mines with steeply dipping discontinuities mainly show flexural toppling failure.However,the steeply dipping structural strata near the goaf mainly exhibit shear slipping failure,in which case the mechanical model used to describe them can be simplified by treating them as steeply dipping superimposed cantilever beams.By taking the steeply dipping superimposed cantilever beam that first experiences failure as the key stratum,the failure scope of the strata(and criteria for the stability of metal mines with steeply dipping discontinuities mined using sublevel caving)can be obtained via iterative computations from the key stratum,moving downward toward and upwards away from the goaf.展开更多
This paper investigates the verb valency structure of English that is used by English as Foreign Language(EFL)learners from a corpus-driven perspective.Specifically,it focuses on the usage of the verbs“suggest”and“...This paper investigates the verb valency structure of English that is used by English as Foreign Language(EFL)learners from a corpus-driven perspective.Specifically,it focuses on the usage of the verbs“suggest”and“advise”in a selected corpus.By analyzing a sample of written and spoken texts,this study attempts to investigate the similarities and differences in the patterns of verb valency between native English speakers and Chinese EFL learners.The findings of this research can contribute to a better understanding of the challenges faced by Chinese EFL learners in acquiring accurate verb valency structures and provide insights for language teachers in designing effective pedagogical approaches.展开更多
Small and medium-sized enterprises(SMEs)are key contributors to technological innovation.As China's vanguard for self-reliance and strength in science and technology,specialized,sophisticated,distinctive and novel...Small and medium-sized enterprises(SMEs)are key contributors to technological innovation.As China's vanguard for self-reliance and strength in science and technology,specialized,sophisticated,distinctive and novel(SSDN)SMEs have grown into an important motivation for high-quality development,a key stabilizer for the new development paradigm,and a vital force for an innovation-driven China.In recent years,China has been ramping up support for SSDN SMEs,and raised the focus on their development to a new level.At present,some problems and obstacles are befalling the high-quality development of SSDN SMEs,such as imperfect innovation system and mechanism,weak basic research service capabilities,a digital divide in digital transformation,and insuficient vitality of collaboration among players in the innovation ecosystem.In the future,China should promote the high-quality development of SSDN SMEs from system and mechanism,basic input,business environment,and digital empowerment.Specifically,China should increase policy support to consolidate the institutional guarantee for innovative development,build more platforms to form a dynamic innovation ecology,enhance intellectual property protection to spur entrepreneurship,and ramp up upgrading and transformation for the quality and efficiency improvement of traditional enterprises.展开更多
Kunqu Fushengliuji(Garden Edition),newly born in 2018,is an immersive performance in a Suzhou garden(world cultural heritage),namely Canglang Pavilion,through the artistic form of kunqu(world intangible cultural herit...Kunqu Fushengliuji(Garden Edition),newly born in 2018,is an immersive performance in a Suzhou garden(world cultural heritage),namely Canglang Pavilion,through the artistic form of kunqu(world intangible cultural heritage),which proves itself a perfect window for an audience to understand the distinctive Suzhou culture and Suzhou lifestyle.From a perspective of translation semiotics,specifically the translation of the three headings of cultural signs,we analyze its English translation by sinologist Kim Hunter Gordon,and find the status of communication of distinctive Suzhou culture to the West.With these findings,and more importantly,through the understanding and cognition of Westerners,we may be able to see the achievements and shortcomings in the communication of Chinese culture to the outside world,observe the initiative and tactics of“Chinese culture going out”,and improve them deeply and constantly.展开更多
Currently, it has been noticed a strong use of ICTs in several companies. The objective of this study was to analyze and measure the impact of the implementation of ICTs on the strategy and structure of management of ...Currently, it has been noticed a strong use of ICTs in several companies. The objective of this study was to analyze and measure the impact of the implementation of ICTs on the strategy and structure of management of core competence in SMEs in Bukavu, DRC. The scale used shows the good psychometric properties (χ<sup>2</sup> = 75.045;P = 0.16;χ<sup>2</sup>/ddl = 1.471;CFI = 0.92;IFI = 0.92;RMSEA = 0.049;NFI = 0.79;GFI = 0.94;AGFI = 0.91. This study analyzed primary data collected from 195 SMEs in the city of Bukavu. Data processing was achieved using exploratory and confirmatory factor analysis and flat sorting. The results indicate that the use of ICTs by SME managers in the city of Bukavu has a positive impact on all dimensions of core competence selected in this study. They also reveal that the views of these leaders on the importance attached to the adoption of ICTs were divided and the level of ICT use was above average.展开更多
Local geometric information and discontinuity features are key aspects of the analysis of the evolution and failure mechanisms of unstable rock blocks in rock tunnels.This study demonstrates the integration of terrest...Local geometric information and discontinuity features are key aspects of the analysis of the evolution and failure mechanisms of unstable rock blocks in rock tunnels.This study demonstrates the integration of terrestrial laser scanning(TLS)with distinct element method for rock mass characterization and stability analysis in tunnels.TLS records detailed geometric information of the surrounding rock mass by scanning and collecting the positions of millions of rock surface points without contact.By conducting a fuzzy K-means method,a discontinuity automatic identification algorithm was developed,and a method for obtaining the geometric parameters of discontinuities was proposed.This method permits the user to visually identify each discontinuity and acquire its spatial distribution features(e.g.occurrences,spac-ings,trace lengths)in great detail.Compared with hand mapping in conventional geotechnical surveys,the geometric information of discontinuities obtained by this approach is more accurate and the iden-tification is more efficient.Then,a discrete fracture network with the same statistical characteristics as the actual discontinuities was generated with the distinct element method,and a representative nu-merical model of the jointed surrounding rock mass was established.By means of numerical simulation,potential unstable rock blocks were assessed,and failure mechanisms were analyzed.This method was applied to detection and assessment of unstable rock blocks in the spillway and sand flushing tunnel of the Hongshiyan hydropower project after a collapse.The results show that the noncontact detection of blocks was more labor-saving with lower safety risks compared with manual surveys,and the stability assessment was more reliable since the numerical model built by this method was more consistent with the distribution characteristics of actual joints.This study can provide a reference for geological survey and unstable rock block hazard mitigation in tunnels subjected to complex geology and active rockfalls.展开更多
基金Supported by Basic Tourism which is the Elaborate Course of Guang-zhou Vocational College of Technology and BusinessSubtopic of 863Key Program (2006AA06A306 )+1 种基金Key Item of Weather Bureau of Shandong Province (2009sdqxz16)Geochemical Investigation Data-base (INFO-115-C01-SDB4-06) ~~
文摘By using multi-objective analysis method, five architectural tourist sites with Lingnan characteristics were selected. Through the analysis on relevant data obtained by GIS, spatial analysis research had been conducted on competitiveness of Lingnan distinctive architectural tourist cultural sites in Guangdong Province and some conclusions had been obtained.
基金supported by the National Natural Science Foundation of China(Grant Nos.11105002 and 61170172)the Natural Science Foundation of Anhui Province,China(Grant Nos.1408085QA16 and 1408085ME101)+1 种基金the China Postdoctoral Science Foundation(Grant No.2014M551788)the Open-end Fund of State Key Laboratory of Advanced Electromagnetic Engineering and Technology(HUST),China(Grant No.GZ1301)
文摘Atmospheric lower-power pulsed microwave argon cold plasma jets are obtained by using coaxial transmission line resonators in ambient air.The plasma jet plumes are generated at the end of a metal wire placed in the middle of the dielectric tubes.The electromagnetic model analyses and simulation results suggest that the discharges are excited resonantly by the enhanced electric field of surface plasmon polaritons.Moreover,for conquering the defect of atmospheric argon filamentation discharges excited by 2.45-GHz of continued microwave,the distinctive patterns of the plasma jet plumes can be maintained by applying different gas flow rates of argon gas,frequencies of pulsed modulator,duty cycles of pulsed microwave,peak values of input microwave power,and even by using different materials of dielectric tubes.In addition,the emission spectrum,the plume temperature,and other plasma parameters are measured,which shows that the proposed pulsed microwave plasma jets can be adjusted for plasma biomedical applications.
文摘Brand construction plays an increasingly important role in marketing and competition in modern agricultural industry. There are problems in brand construction of tropical distinctive agricultural products in Hainan,including less famous brand products,weak core competence,strengthening declaration and ignoring management as well as imperfect marketing system,therefore resource integration should be stressed to develop famous brand products and technological innovation should be strengthened to promote core competence of enterprise.
基金Supported by 2010 Research Project of Guangxi Education Department(201010LX411)Research Project of Guangxi University of Finance and Economics(2010A01)
文摘On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,distinctive forestry and distinctive breeding.Based on the analysis,two display indices,domestic comparative advantages index and domestic competitiveness,are selected to analyze the competitiveness of Guangxi distinctive agriculture.The results show that at present the overall competitiveness of Guangxi distinctive agriculture is strong,but its competitiveness is reflected on resource advantages and most of the resources are primary agro-products.Accordingly,in the future,Guangxi distinctive agriculture should adopt non-equilibrium developmental strategy;take the great-leap-forward developmental path;apply modern production elements to increase the competitiveness of Guangxi distinctive agriculture.It should lay stress on "three innovation",which includes organization innovation,developing distinctive agricultural firms ;technology innovation,enlarging the scope and scale of agricultural listed companies;financial fund-raising innovation,transforming traditional distinctive agriculture by using high and new technology.
基金Supported by the Science and Technology Training Projects for Undergraduates in China Agricultural University (URP2010-cem01)
文摘In the paper,the concept of circulation industrial chain of distinctive agricultural products is introduced.By using the e-commerce platform,the new industrial chain for the circulation of distinctive agricultural products on the basis of online transaction is established.In view of the standardization problems in the production and processing section,online exhibition and trade section,after sale section,the related solutions are put forward.In the production and processing sections,the fruit farmers should implement scale cultivation;pick and store fruits according to the local situation;pack fruits by using green package which can represent the features of the brand;establish the agricultural products association.In the section of online exhibition and trade,the identity of network platform should be normalized and the authentication technique and system should be perfected;the unification of product exhibition should be paid attention to;the specialization of negotiation should be intensified and the differences in communication should be represented;the price should be made comprehensively and the reference factors should be diversified;the entrance situation should be legalized and the account should be managed differently.In the after sale section,the business scope of logistics should be expanded and technology should be input;taking the customers as the center,the subsystem of distinctive service standard should be stipulated;the credit evaluation standard and punishment mechanism should be clarified;the customer-related management system should be implemented as well as the supervision mechanism.
基金Supported by Hebei Social Science Development and Research Subjects(201003127)
文摘The feasibility of implementing distinctive agriculture insurance in Hebei Province is analyzed from the following aspects covering the support of policies and laws;agricultural products and brands with Hebei distinct;the rich experience of insurance companies;farmers' strong awareness on insurance and farmers' great demand on agricultural insurance.The plights faced by distinctive agricultural insurance are pointed out.It includes weak awareness of farmers on buying insurance;low enthusiasm of insurance company;poor support from the government and backward laws and regulations and so on.The countermeasures on developing distinctive agricultural insurance are put forward.The countermeasures on improving farmers' awareness on buying insurance;innovating the insurance products and services;increasing the support from the government;perfecting the legislation on agricultural insurance should be adopted to develop agricultural insurance.
文摘With the process of globalization and integration,more and more people tend to be bilingual.Undoubtedly,mastering a second language is significant.This thesis aims to explore how to conquer the difficulties in learning British English sounds through analyzing a British cartoon Peppa Pig.Chapter one begins with the research background,significance and purpose of research.The thesis takes the cartoon Peppa Pig as the starting point to demonstrate the role of distinctive features for Chinese learners to conquer negative transfer.The empirical research could be found in Chapter two,because of requiring to know the concrete circumstance of Chinese learners.Through the collection and analysis of data,we can know these problems which Chinese learners exist in the process of learning British English.Based on the comparison of Chinese and British English,Chapter three clarifies the difficulties in learning British English.As for Chinese learners,mastering distinctive features can promote learners to master British English sounds better than stress and rhythm.Chapter four states the role of the distinctive features in helping conquer Chinese negative transfer in the cartoon Peppa Pig.The final chapter is the conclusion of this thesis and involves a new study for Chinese learners to learn British English sounds under the distinctive features.
文摘Bangladesh is enriched with beautiful traditional indigenous cultures.Different indigenous peoples with their distinctive existences also considerably create an enhance values and lifestyles to the socio-cultural sectors of Bangladesh[1].Habitually,these indigenous communities have been comparable to live a large combined family to shear their lifestyles[2].Presently the country has 45 indigenous communities who are living in different locations.All indigenous people within this country have their own style to build their settlements with special techniques to keep them safe and sound from all types of natural and environmental vulnerabilities and also enhance their knowledge of construction techniques and lifestyle.Rakhain is one of them with very small number of people are still living in different regions within the country which have their own system of building techniques.Study found that for several hundreds of years Rakhains are strictly following their indigenous prescription of house and settlement pattern.Although like other indigenous people of this country,they have mountains of problems,such as forced land occupation,lack of security and minority characteristics.Above all,forced political separation has gradually drowned them in the abysmal pit of marginal destiny.This has turned them into exiles in their own land.As a result,many of them are being forced to leave the country and as a result they misplaced their native knowledge and technique to construct.Thus,this study will initially focus on to search for the distinctiveness of their settlement pattern and building construction techniques and lifestyle.Again,in view of their problems,knowledge and experiences concerning archetype,built and house pattern,this study will finally explain how Rakhains accumulate their every distinctiveness from history and for present and future invention.
文摘China International Home Textile Trade Fair Brief Introduction China International Home Textile Trade Fair will launch at the Shanghai New International Expo Centre as the same ever during 25th-27th
基金supported by the seed project of Wuhan National Laboratory for Optoelectronicsthe National 1000 Young Talents project and the National Natural Science Foundation of China(NSFC 61274055 and 61322401)。
文摘Photodetectors convert photons into current or voltage outputs and are thus widely used for spectroscopy,imaging and sensing.Traditional photodetectors generally show a consistent-polarity response to incident photons within their broadband responsive spectrum.Here we introduced a new type of photodetector employing SnS_(2) nanosheets sensitized with PbS colloidal quantum dots(CQDs)that are not only sensitive(~105AW−1)and broadband(300–1000 nm)but also spectrally distinctive,that is,show distinctive(positive or negative)photoresponse toward incident photons of different wavelengths.A careful mechanism study revealed illumination-modulated Schottky contacts between SnS_(2) nanosheets and Au electrodes,altering the photoresponse polarity toward incident photons of different wavelengths.Finally,we applied our SnS_(2) nanosheet/PbS CQDs hybrid photodetector to differentiate the color temperature of emission from a series of white light-emitting diodes(LEDs),showcasing the unique application of our novel photodetectors.
基金financially supported by the Fundamental Research Funds for the Central Universities(No.3072020CF1019)Heilongjiang Provincial Postdoctoral Science Foundation(No.LBH-Z19137)Natural Science Foundation of Heilongjiang Province(No.LH2019E038)。
文摘New ambient sound absorption material,lightweight isocyanate-based polyimide foam(IBPIF),was fabricated by operable combination between different distinctive acoustic IBPIF.Cellular structure of IBPIF was facilely and obviously adjusted by increased slurry temperature corresponding to change in distinctive acoustic properties.Moreover,density of all IBPIF kept at only 12-17 kg/m3.With increasing slurry temperature from 0℃to 40℃,cell size and window opening rate gradually increased from 553μm to 791μm and from 6.85%to 58.46%,respectively.In this study,IBPIF generated by slurries at 0℃(marked as PIF-2)and 40℃(marked as PIF-6)showed best and distinctive acoustic behavior in 315-800 Hz and 800-6300 Hz regions,respectively.After acoustic behavior study of combined IBPIF prepared by stitching combination between two distinctive acoustic IBPIFs,results showed that only when PIF-6 sheet used as sound receiving surface even though with thickness of only 10 mm could the combined IBPIF possess the best acoustic level in 800-6300 Hz region as PIF-6.Furtherly,acoustic behavior in 315-800 Hz region could be significantly enhanced by increasing thickness of PIF-2 and could reach or close to the best acoustic level.
基金This work is supported by Demonstration of Scientific and Technology Achievements Transform in Sichuan Province under Grant 2022ZHCG0036National Natural Science Foundation of China(62002047).
文摘Identifying a device and detecting a change in its position is critical for secure devices management in the Internet of Things(IoT).In this paper,a device management system is proposed to track the devices by using audio-based location distinction techniques.In the proposed scheme,traditional cryptographic techniques,such as symmetric encryption algorithm,RSA-based signcryption scheme,and audio-based secure transmission,are utilized to provide authentication,non-repudiation,and confidentiality in the information interaction of the management system.Moreover,an audio-based location distinction method is designed to detect the position change of the devices.Specifically,the audio frequency response(AFR)of several frequency points is utilized as a device signature.The device signature has the features as follows.(1)Hardware Signature:different pairs of speaker and microphone have different signatures;(2)Distance Signature:in the same direction,the signatures are different at different distances;and(3)Direction Signature:at the same distance,the signatures are different in different directions.Based on the features above,amovement detection algorithmfor device identification and location distinction is designed.Moreover,a secure communication protocol is also proposed by using traditional cryptographic techniques to provide integrity,authentication,and non-repudiation in the process of information interaction between devices,Access Points(APs),and Severs.Extensive experiments are conducted to evaluate the performance of the proposed method.The experimental results show that the proposedmethod has a good performance in accuracy and energy consumption.
基金financially supported by National Natural Science Foundation of China(Grant Nos.52074312 and 52211530097)CNPC Science and Technology Innovation Foundation(Grant No.2021DQ02-0505).
文摘Borehole instability in naturally fractured rocks poses significant challenges to drilling.Drilling mud invades the surrounding formations through natural fractures under the difference between the wellbore pressure(P w)and pore pressure(P p)during drilling,which may cause wellbore instability.However,the weakening of fracture strength due to mud intrusion is not considered in most existing borehole stability analyses,which may yield significant errors and misleading predictions.In addition,only limited factors were analyzed,and the fracture distribution was oversimplified.In this paper,the impacts of mud intrusion and associated fracture strength weakening on borehole stability in fractured rocks under both isotropic and anisotropic stress states are investigated using a coupled DEM(distinct element method)and DFN(discrete fracture network)method.It provides estimates of the effect of fracture strength weakening,wellbore pressure,in situ stresses,and sealing efficiency on borehole stability.The results show that mud intrusion and weakening of fracture strength can damage the borehole.This is demonstrated by the large displacement around the borehole,shear displacement on natural fractures,and the generation of fracture at shear limit.Mud intrusion reduces the shear strength of the fracture surface and leads to shear failure,which explains that the increase in mud weight may worsen borehole stability during overbalanced drilling in fractured formations.A higher in situ stress anisotropy exerts a significant influence on the mechanism of shear failure distribution around the wellbore.Moreover,the effect of sealing natural fractures on maintaining borehole stability is verified in this study,and the increase in sealing efficiency reduces the radial invasion distance of drilling mud.This study provides a directly quantitative prediction method of borehole instability in naturally fractured formations,which can consider the discrete fracture network,mud intrusion,and associated weakening of fracture strength.The information provided by the numerical approach(e.g.displacement around the borehole,shear displacement on fracture,and fracture at shear limit)is helpful for managing wellbore stability and designing wellbore-strengthening operations.
基金Financial support for this work was provided by the Youth Fund Program of the National Natural Science Foundation of China (No. 42002292)the General Program of the National Natural Science Foundation of China (No. 42377175)the General Program of the Hubei Provincial Natural Science Foundation, China (No. 2023AFB631)
文摘The deformation and fracture evolution mechanisms of the strata overlying mines mined using sublevel caving were studied via numerical simulations.Moreover,an expression for the normal force acting on the side face of a steeply dipping superimposed cantilever beam in the surrounding rock was deduced based on limit equilibrium theory.The results show the following:(1)surface displacement above metal mines with steeply dipping discontinuities shows significant step characteristics,and(2)the behavior of the strata as they fail exhibits superimposition characteristics.Generally,failure first occurs in certain superimposed strata slightly far from the goaf.Subsequently,with the constant downward excavation of the orebody,the superimposed strata become damaged both upwards away from and downwards toward the goaf.This process continues until the deep part of the steeply dipping superimposed strata forms a large-scale deep fracture plane that connects with the goaf.The deep fracture plane generally makes an angle of 12°-20°with the normal to the steeply dipping discontinuities.The effect of the constant outward transfer of strata movement due to the constant outward failure of the superimposed strata in the metal mines with steeply dipping discontinuities causes the scope of the strata movement in these mines to be larger than expected.The strata in the metal mines with steeply dipping discontinuities mainly show flexural toppling failure.However,the steeply dipping structural strata near the goaf mainly exhibit shear slipping failure,in which case the mechanical model used to describe them can be simplified by treating them as steeply dipping superimposed cantilever beams.By taking the steeply dipping superimposed cantilever beam that first experiences failure as the key stratum,the failure scope of the strata(and criteria for the stability of metal mines with steeply dipping discontinuities mined using sublevel caving)can be obtained via iterative computations from the key stratum,moving downward toward and upwards away from the goaf.
文摘This paper investigates the verb valency structure of English that is used by English as Foreign Language(EFL)learners from a corpus-driven perspective.Specifically,it focuses on the usage of the verbs“suggest”and“advise”in a selected corpus.By analyzing a sample of written and spoken texts,this study attempts to investigate the similarities and differences in the patterns of verb valency between native English speakers and Chinese EFL learners.The findings of this research can contribute to a better understanding of the challenges faced by Chinese EFL learners in acquiring accurate verb valency structures and provide insights for language teachers in designing effective pedagogical approaches.
文摘Small and medium-sized enterprises(SMEs)are key contributors to technological innovation.As China's vanguard for self-reliance and strength in science and technology,specialized,sophisticated,distinctive and novel(SSDN)SMEs have grown into an important motivation for high-quality development,a key stabilizer for the new development paradigm,and a vital force for an innovation-driven China.In recent years,China has been ramping up support for SSDN SMEs,and raised the focus on their development to a new level.At present,some problems and obstacles are befalling the high-quality development of SSDN SMEs,such as imperfect innovation system and mechanism,weak basic research service capabilities,a digital divide in digital transformation,and insuficient vitality of collaboration among players in the innovation ecosystem.In the future,China should promote the high-quality development of SSDN SMEs from system and mechanism,basic input,business environment,and digital empowerment.Specifically,China should increase policy support to consolidate the institutional guarantee for innovative development,build more platforms to form a dynamic innovation ecology,enhance intellectual property protection to spur entrepreneurship,and ramp up upgrading and transformation for the quality and efficiency improvement of traditional enterprises.
基金supported by the Philosophy and Social Science Research Projects in Colleges of Jiangsu Province A Study on the International Communication Initiative of Kunqu under the Integration of Culture and Tourism(Grant Number:2021SJA1375)the Major Project of China National Social Science Foundation The History of Chinese Xiqu in the 70th Anniversary of the Founding of New China(Jiangsu Province Volume)(Grant Number:19ZD05)+1 种基金Humanities and Social Sciences Research Team Project Foundation of Soochow University A Study on the Intercultural Communication of Chinese Kunqu(Grant Number:21XM1006)the Center for Chinese Culture Translation and International Communication。
文摘Kunqu Fushengliuji(Garden Edition),newly born in 2018,is an immersive performance in a Suzhou garden(world cultural heritage),namely Canglang Pavilion,through the artistic form of kunqu(world intangible cultural heritage),which proves itself a perfect window for an audience to understand the distinctive Suzhou culture and Suzhou lifestyle.From a perspective of translation semiotics,specifically the translation of the three headings of cultural signs,we analyze its English translation by sinologist Kim Hunter Gordon,and find the status of communication of distinctive Suzhou culture to the West.With these findings,and more importantly,through the understanding and cognition of Westerners,we may be able to see the achievements and shortcomings in the communication of Chinese culture to the outside world,observe the initiative and tactics of“Chinese culture going out”,and improve them deeply and constantly.
文摘Currently, it has been noticed a strong use of ICTs in several companies. The objective of this study was to analyze and measure the impact of the implementation of ICTs on the strategy and structure of management of core competence in SMEs in Bukavu, DRC. The scale used shows the good psychometric properties (χ<sup>2</sup> = 75.045;P = 0.16;χ<sup>2</sup>/ddl = 1.471;CFI = 0.92;IFI = 0.92;RMSEA = 0.049;NFI = 0.79;GFI = 0.94;AGFI = 0.91. This study analyzed primary data collected from 195 SMEs in the city of Bukavu. Data processing was achieved using exploratory and confirmatory factor analysis and flat sorting. The results indicate that the use of ICTs by SME managers in the city of Bukavu has a positive impact on all dimensions of core competence selected in this study. They also reveal that the views of these leaders on the importance attached to the adoption of ICTs were divided and the level of ICT use was above average.
基金support of the National Natural Science Foundation of China(Grant No.42102316)the Open Project of the Technology Innovation Center for Geological Environment Monitoring of Ministry of Natural Resources of China(Grant No.2022KFK1212005).
文摘Local geometric information and discontinuity features are key aspects of the analysis of the evolution and failure mechanisms of unstable rock blocks in rock tunnels.This study demonstrates the integration of terrestrial laser scanning(TLS)with distinct element method for rock mass characterization and stability analysis in tunnels.TLS records detailed geometric information of the surrounding rock mass by scanning and collecting the positions of millions of rock surface points without contact.By conducting a fuzzy K-means method,a discontinuity automatic identification algorithm was developed,and a method for obtaining the geometric parameters of discontinuities was proposed.This method permits the user to visually identify each discontinuity and acquire its spatial distribution features(e.g.occurrences,spac-ings,trace lengths)in great detail.Compared with hand mapping in conventional geotechnical surveys,the geometric information of discontinuities obtained by this approach is more accurate and the iden-tification is more efficient.Then,a discrete fracture network with the same statistical characteristics as the actual discontinuities was generated with the distinct element method,and a representative nu-merical model of the jointed surrounding rock mass was established.By means of numerical simulation,potential unstable rock blocks were assessed,and failure mechanisms were analyzed.This method was applied to detection and assessment of unstable rock blocks in the spillway and sand flushing tunnel of the Hongshiyan hydropower project after a collapse.The results show that the noncontact detection of blocks was more labor-saving with lower safety risks compared with manual surveys,and the stability assessment was more reliable since the numerical model built by this method was more consistent with the distribution characteristics of actual joints.This study can provide a reference for geological survey and unstable rock block hazard mitigation in tunnels subjected to complex geology and active rockfalls.