In the continuous“reshuffling”,the cosmetics industry has gone through the year of 2024.As dividends of the entire market vanish,the key to break the situation in the new year is to lay out new tracks and create new...In the continuous“reshuffling”,the cosmetics industry has gone through the year of 2024.As dividends of the entire market vanish,the key to break the situation in the new year is to lay out new tracks and create new products for brands.However,in 2024,the cosmetics filing market further declined,with a total of more than 550,000 new products registered and filed,a decrease of 3%compared to 2023.Specifically on the brand side,there were more“declining”:PROYA registered and filed 55 new products,down 9.8%year on year.展开更多
Objective:To summarize and analyze the application of traditional technology in preparing traditional Chinese medicine(TCM)preparations in medical institutions in Shaanxi Province after implementing the“Implementatio...Objective:To summarize and analyze the application of traditional technology in preparing traditional Chinese medicine(TCM)preparations in medical institutions in Shaanxi Province after implementing the“Implementation Rules for the Record Management of Traditional Chinese Medicine Preparations in Medical Institutions in Shaanxi Province(Trial)”(“Implementation Rules”),and to provide a reference for the filing of TCM preparations.Methods:The TCM preparations recorded by medical institutions in Shaanxi Province since March 2019 were statistically summarized.The filing status was comprehensively and systematically analyzed based on the number of institutions and preparations,the ratio of commissioned to self-production,dosage form distribution,and the level of medical institutions.Results:Since implementing the Implementation Rules,a total of 479 TCM preparations have been filed in the province.Among these,262 were commissioned for production,and 217 were self-produced,covering 17 dosage forms such as granules,pills,capsules,mixtures,and powders.A total of 86 medical institutions have filed preparations,most of which are located in Xi’an,Xianyang,and Weinan,with these three cities accounting for the largest number of filings.Conclusion:The policy on the TCM preparation filing system has been widely recognized and deeply implemented in Shaanxi Province.Third-level medical institutions are the primary contributors to preparation filings.Regional differences exist in the development of preparation filing,indicating significant potential for further growth in the province’s filing efforts.展开更多
Reduction of nitrate by zero-valent iron is a highly exergonic reaction that has long been known to occur. Use of scrap iron filings (SIF) as the PRB (Permeable Reactive Barrier) material can be used to recycle certai...Reduction of nitrate by zero-valent iron is a highly exergonic reaction that has long been known to occur. Use of scrap iron filings (SIF) as the PRB (Permeable Reactive Barrier) material can be used to recycle certain by-products, and identify cheaper replacements for expensive conventional PRB materials, especially pure metallic iron. The feasibility of reductive denitrification of nitrate by SIF was studied by batch experiments. Operational parameters such as pH value, SIF dosage and initial concentration of nitrate were investigated. The removal efficiency of nitrate reached 80% under the conditions of pH of 2.5, nitrate initial con- centration of 45 mg/L and SIF dosage of 100 g/L within 4 h. Results indicated that nitrate removal is inversely related to pH. Low pH value condition favors for the nitrate transformation. Different from the results of others who studied nitrate reduction using iron powder, we found that there was a lag time before nitrate reduction occurs, even at low pH. Finally, the possible mechanism of nitrate reduction by Fe0 is discussed.展开更多
An experimental study on the thermal properties of iron filings and steel-fiber-reinforced concrete for solar/thermal energy storage application is presented in this report. It takes into account the results of measur...An experimental study on the thermal properties of iron filings and steel-fiber-reinforced concrete for solar/thermal energy storage application is presented in this report. It takes into account the results of measurements of thermal conductivity, thermal resistivity, thermal diffusivity and the results of compressive strength, density as well as energy storage capacity calculated from the knowledge of the above measured parameters. The experimental testing method is described as well: based upon the linear heat source theory, it requires the use of a special probe to be inserted into the sample. The experimentation was forwarded to test concrete aggregate mixtures with three different sizes and same quantity of steel fibers;two different quantities of iron filings and one plain concrete. The measurements were carried out from the pouring time of cubic samples and were ended up when hardened conditions were achieved. The results indicate that the steel fibers and iron filings have influence on the thermal and mechanical properties of the concretes tested, thus the iron filings and steel fibers reinforced concrete is suitable for better solar/thermal energy storage due to an increase in storage capacity over plain concrete.展开更多
According to the website of the World Intellectual Property Organization, ZTE filed for 2826 applications in 2011. The company moved up from its No. 2 spot in 2010 The statistics also show consistent growth in the num...According to the website of the World Intellectual Property Organization, ZTE filed for 2826 applications in 2011. The company moved up from its No. 2 spot in 2010 The statistics also show consistent growth in the number of international patents that ZTE has filed over the past five years. The number of patents ZTE filed for grew more than 50 per cent yearonyear in 2011.展开更多
Manufacturing industry plays a pivotal role in the overall development of national economy. With the rapid development of China's manufacturing industry, we must attach importance to the basic work of fitter. With...Manufacturing industry plays a pivotal role in the overall development of national economy. With the rapid development of China's manufacturing industry, we must attach importance to the basic work of fitter. With the technological innovation of manufacturing industry and the overall development of precision, we should actively conduct in-depth research on fitter technology and analyze fitter file matching skills to ensure the comprehensive development of fitter technology and promote the improvement of the overall level of China's manufacturing industry.展开更多
The PAN Hongbin case raised to the academic circles the question of how to connect with the court proceedings after the People’s Congress filed for review.The solution to this problem should focus on the functional p...The PAN Hongbin case raised to the academic circles the question of how to connect with the court proceedings after the People’s Congress filed for review.The solution to this problem should focus on the functional positioning of China’s recording and review system,whether it involves the specific rights of citizens in individual cases.From the actual situation in China,the development trend of the constitutional review systems in various countries in the world,and the attitudes of the National People’s Congress and the academic circle,the protection of civil rights should be one of the functions of record review.According to the relevant provisions of the Legislative Law and the Law on the Supervision of Standing Committees of People’s Congresses at Various Levels,our courts should construct a dual complementary mechanism for review requests from the Supreme People’s Court and review recommendations from local people’s courts at all levels in the litigation process.Meanwhile,according to the retrospective theory of the law,the filing review filed by the parties after the court ’s lawsuit should be retroactive to the parties themselves,and the law should provide for a system to initiate retrial proceedings in this case to relieve the parties’ rights.展开更多
This study focuses on identifying the factors under which mixed microbial seeds assist bio-chemical denitrification when Scrap Iron Filings(SIF)are used as electron donors and adsorbents in low C/N ratio waters.Batch ...This study focuses on identifying the factors under which mixed microbial seeds assist bio-chemical denitrification when Scrap Iron Filings(SIF)are used as electron donors and adsorbents in low C/N ratio waters.Batch studies were conducted in abiotic and biotic reactors containing fresh and aged SIF under different dissolved oxygen concentrations with NO_(3)^(-)−N and/or PO_(4)^(3−)influent(s)and their nitrate/phosphate removal and by-product formations were studied.Batch reactors were seeded with a homogenized mixed microbial inoculum procured from natural sludges which were enriched over 6 months under denitrifying conditions in the presence of SIF.Results indicated that when influent containing 40 mg/L of NO_(3)^(-)−N was treated with 5 g SIF,79.9%nitrate reduction was observed in 8 days abiotically and 100%removal was accomplished in 20 days when the reactor was seeded.Both abiotic and seeded reactors removed more than 92%PO_(4)^(3−)under high DO conditions in 12 days.Abiotic and biochemical removal of NO_(3)^(-)−N and abiotic removal of PO_(4)^(3−)were higher under independent NO_(3)^(-)−N/PO_(4)^(3−)loading,while 99%PO_(4)^(3−)was removed biochemically under combined NO_(3)^(-)−N and PO_(4)^(3−)loading.This study furthers the understandings of nitrate and phosphate removal in Zero Valent Iron(ZVI)assisted mixed microbial systems to encourage the application of SIF-supported bio-chemical processes in the simultaneous removals of these pollutants.展开更多
Journal Customer services For ordering information,claims and any enquiry concerning your joumal subscription please go to contact your nearest office.America:Tel:(401)515--4764 Europe,Middle East,Africa and Asia Paci...Journal Customer services For ordering information,claims and any enquiry concerning your joumal subscription please go to contact your nearest office.America:Tel:(401)515--4764 Europe,Middle East,Africa and Asia Pacific:Email:asiaar@163.com;523404392@qq.com;434421224@qq.com Tel:+86-551-65148112 Annual subscription rate(12 issues):US$300 Instructions for Submissions AlI manuscripts should be submitted in a single file(ineluding text,notes,references,figures,and tables)in MS-Word(doc)or Ado-be Acrobat(pdf)format only by email to asiaar@163.com.展开更多
Submission Manuscripts should be submitted by one of the authors of the manuscript through the online Manuscript Tracking System(MTS)(http://mc03.manuscriptcentral.com/epphy).Regardless of the source of the word-proce...Submission Manuscripts should be submitted by one of the authors of the manuscript through the online Manuscript Tracking System(MTS)(http://mc03.manuscriptcentral.com/epphy).Regardless of the source of the word-processing tool,only electronic PDF(,pdf)or Word(doc,.docx,.rtf)files can be submitted through the MTS.展开更多
With the increase in the quantity and scale of Static Random-Access Memory Field Programmable Gate Arrays (SRAM-based FPGAs) for aerospace application, the volume of FPGA configuration bit files that must be stored ha...With the increase in the quantity and scale of Static Random-Access Memory Field Programmable Gate Arrays (SRAM-based FPGAs) for aerospace application, the volume of FPGA configuration bit files that must be stored has increased dramatically. The use of compression techniques for these bitstream files is emerging as a key strategy to alleviate the burden on storage resources. Due to the severe resource constraints of space-based electronics and the unique application environment, the simplicity, efficiency and robustness of the decompression circuitry is also a key design consideration. Through comparative analysis current bitstream file compression technologies, this research suggests that the Lempel Ziv Oberhumer (LZO) compression algorithm is more suitable for satellite applications. This paper also delves into the compression process and format of the LZO compression algorithm, as well as the inherent characteristics of configuration bitstream files. We propose an improved algorithm based on LZO for bitstream file compression, which optimises the compression process by refining the format and reducing the offset. Furthermore, a low-cost, robust decompression hardware architecture is proposed based on this method. Experimental results show that the compression speed of the improved LZO algorithm is increased by 3%, the decompression hardware cost is reduced by approximately 60%, and the compression ratio is slightly reduced by 0.47%.展开更多
Volocopter,a pioneering German company in the electric vertical take-off and landing(eVTOL)aircraft sector,recently filed for bankruptcy,drawing significant international attention.Founded in 2011,Volocopter was haile...Volocopter,a pioneering German company in the electric vertical take-off and landing(eVTOL)aircraft sector,recently filed for bankruptcy,drawing significant international attention.Founded in 2011,Volocopter was hailed as a leader in the emerging air taxi industry,benefitting from technological breakthroughs and substantial international investment.展开更多
[Objective]In response to the issue of insufficient integrity in hourly routine meteorological element data files,this paper aims to improve the availability and reliability of data files,and provide high-quality data...[Objective]In response to the issue of insufficient integrity in hourly routine meteorological element data files,this paper aims to improve the availability and reliability of data files,and provide high-quality data file support for meteorological forecasting and services.[Method]In this paper,an efficient and accurate method for data file quality control and fusion processing is developed.By locating the missing measurement time,data are extracted from the"AWZ.db"database and the minute routine meteorological element data file,and merged into the hourly routine meteorological element data file.[Result]Data processing efficiency and accuracy are significantly improved,and the problem of incomplete hourly routine meteorological element data files is solved.At the same time,it emphasizes the importance of ensuring the accuracy of the files used and carefully checking and verifying the fusion results,and proposes strategies to improve data quality.[Conclusion]This method provides convenience for observation personnel and effectively improves the integrity and accuracy of data files.In the future,it is expected to provide more reliable data support for meteorological forecasting and services.展开更多
At present,the polymerase chain reaction(PCR)amplification-based file retrieval method is the mostcommonly used and effective means of DNA file retrieval.The number of orthogonal primers limitsthe number of files that...At present,the polymerase chain reaction(PCR)amplification-based file retrieval method is the mostcommonly used and effective means of DNA file retrieval.The number of orthogonal primers limitsthe number of files that can be accurately accessed,which in turn affects the density in a single oligo poolof digital DNA storage.In this paper,a multi-mode DNA sequence design method based on PCR file retrie-val in a single oligonucleotide pool is proposed for high-capacity DNA data storage.Firstly,by analyzingthe maximum number of orthogonal primers at each predicted primer length,it was found that the rela-tionship between primer length and the maximum available primer number does not increase linearly,and the maximum number of orthogonal primers is on the order of 10^(4).Next,this paper analyzes themaximum address space capacity of DNA sequences with different types of primer binding sites for filemapping.In the case where the capacity of the primer library is R(where R is even),the number ofaddress spaces that can be mapped by the single-primer DNA sequence design scheme proposed in thispaper is four times that of the previous one,and the two-level primer DNA sequence design scheme can reach [R/2·(R/2-1)]^(2)times.Finally,a multi-mode DNA sequence generation method is designed based onthe number of files to be stored in the oligonucleotide pool,in order to meet the requirements of the ran-dom retrieval of target files in an oligonucleotide pool with large-scale file numbers.The performance ofthe primers generated by the orthogonal primer library generator proposed in this paper is verified,andthe average Gibbs free energy of the most stable heterodimer formed between the orthogonal primersproduced is−1 kcal·(mol·L^(−1))^(−1)(1 kcal=4.184 kJ).At the same time,by selectively PCR-amplifying theDNA sequences of the two-level primer binding sites for random access,the target sequence can be accu-rately read with a minimum of 10^(3) reads,when the primer binding site sequences at different positionsare mutually different.This paper provides a pipeline for orthogonal primer library generation and multi-mode mapping schemes between files and primers,which can help achieve precise random access to filesin large-scale DNA oligo pools.展开更多
We now differentiate between the requirements for new and revised submissions.You may choose to submit your manuscript as a single Word or PDF file to be used in the refereeing process.Only when your paper is at the r...We now differentiate between the requirements for new and revised submissions.You may choose to submit your manuscript as a single Word or PDF file to be used in the refereeing process.Only when your paper is at the revision stage,will you be requested to put your paper into a'correct format'for acceptance and provide the items required for the publication of your article.展开更多
The healthcare sector involves many steps to ensure efficient care for patients,such as appointment scheduling,consultation plans,online follow-up,and more.However,existing healthcare mechanisms are unable to facilita...The healthcare sector involves many steps to ensure efficient care for patients,such as appointment scheduling,consultation plans,online follow-up,and more.However,existing healthcare mechanisms are unable to facilitate a large number of patients,as these systems are centralized and hence vulnerable to various issues,including single points of failure,performance bottlenecks,and substantial monetary costs.Furthermore,these mechanisms are unable to provide an efficient mechanism for saving data against unauthorized access.To address these issues,this study proposes a blockchain-based authentication mechanism that authenticates all healthcare stakeholders based on their credentials.Furthermore,also utilize the capabilities of the InterPlanetary File System(IPFS)to store the Electronic Health Record(EHR)in a distributed way.This IPFS platform addresses not only the issue of high data storage costs on blockchain but also the issue of a single point of failure in the traditional centralized data storage model.The simulation results demonstrate that our model outperforms the benchmark schemes and provides an efficient mechanism for managing healthcare sector operations.The results show that it takes approximately 3.5 s for the smart contract to authenticate the node and provide it with the decryption key,which is ultimately used to access the data.The simulation results show that our proposed model outperforms existing solutions in terms of execution time and scalability.The execution time of our model smart contract is around 9000 transactions in just 6.5 s,while benchmark schemes require approximately 7 s for the same number of transactions.展开更多
We now differentiate between the requirements for new and revised submissions.You may choose to submit your manuscript as a single Word or PDF file to be used in the refereeing process.Only when your paper is at the r...We now differentiate between the requirements for new and revised submissions.You may choose to submit your manuscript as a single Word or PDF file to be used in the refereeing process.Only when your paper is at the revision stage,will you be requested to put your paper into a'correct format'for acceptance and provide the items required for the publication of your article.展开更多
Images and videos play an increasingly vital role in daily life and are widely utilized as key evidentiary sources in judicial investigations and forensic analysis.Simultaneously,advancements in image and video proces...Images and videos play an increasingly vital role in daily life and are widely utilized as key evidentiary sources in judicial investigations and forensic analysis.Simultaneously,advancements in image and video processing technologies have facilitated the widespread availability of powerful editing tools,such as Deepfakes,enabling anyone to easily create manipulated or fake visual content,which poses an enormous threat to social security and public trust.To verify the authenticity and integrity of images and videos,numerous approaches have been proposed,which are primarily based on content analysis and their effectiveness is susceptible to interference from various image or video post-processing operations.Recent research has highlighted the potential of file containers analysis as a promising forensic approach that offers efficient and interpretable results.However,there is still a lack of review articles on this kind of approach.In order to fill this gap,we present a comprehensive review of file containers-based image and video forensics in this paper.Specifically,we categorize the existing methods into two distinct stages,qualitative analysis and quantitative analysis.In addition,an overall framework is proposed to organize the exiting approaches.Then,the advantages and disadvantages of the schemes used across different forensic tasks are provided.Finally,we outline the trends in this research area,aiming to provide valuable insights and technical guidance for future research.展开更多
文摘In the continuous“reshuffling”,the cosmetics industry has gone through the year of 2024.As dividends of the entire market vanish,the key to break the situation in the new year is to lay out new tracks and create new products for brands.However,in 2024,the cosmetics filing market further declined,with a total of more than 550,000 new products registered and filed,a decrease of 3%compared to 2023.Specifically on the brand side,there were more“declining”:PROYA registered and filed 55 new products,down 9.8%year on year.
文摘Objective:To summarize and analyze the application of traditional technology in preparing traditional Chinese medicine(TCM)preparations in medical institutions in Shaanxi Province after implementing the“Implementation Rules for the Record Management of Traditional Chinese Medicine Preparations in Medical Institutions in Shaanxi Province(Trial)”(“Implementation Rules”),and to provide a reference for the filing of TCM preparations.Methods:The TCM preparations recorded by medical institutions in Shaanxi Province since March 2019 were statistically summarized.The filing status was comprehensively and systematically analyzed based on the number of institutions and preparations,the ratio of commissioned to self-production,dosage form distribution,and the level of medical institutions.Results:Since implementing the Implementation Rules,a total of 479 TCM preparations have been filed in the province.Among these,262 were commissioned for production,and 217 were self-produced,covering 17 dosage forms such as granules,pills,capsules,mixtures,and powders.A total of 86 medical institutions have filed preparations,most of which are located in Xi’an,Xianyang,and Weinan,with these three cities accounting for the largest number of filings.Conclusion:The policy on the TCM preparation filing system has been widely recognized and deeply implemented in Shaanxi Province.Third-level medical institutions are the primary contributors to preparation filings.Regional differences exist in the development of preparation filing,indicating significant potential for further growth in the province’s filing efforts.
基金Project (No. 20407015) supported by the National Natural Sci-ence Foundation of China
文摘Reduction of nitrate by zero-valent iron is a highly exergonic reaction that has long been known to occur. Use of scrap iron filings (SIF) as the PRB (Permeable Reactive Barrier) material can be used to recycle certain by-products, and identify cheaper replacements for expensive conventional PRB materials, especially pure metallic iron. The feasibility of reductive denitrification of nitrate by SIF was studied by batch experiments. Operational parameters such as pH value, SIF dosage and initial concentration of nitrate were investigated. The removal efficiency of nitrate reached 80% under the conditions of pH of 2.5, nitrate initial con- centration of 45 mg/L and SIF dosage of 100 g/L within 4 h. Results indicated that nitrate removal is inversely related to pH. Low pH value condition favors for the nitrate transformation. Different from the results of others who studied nitrate reduction using iron powder, we found that there was a lag time before nitrate reduction occurs, even at low pH. Finally, the possible mechanism of nitrate reduction by Fe0 is discussed.
文摘An experimental study on the thermal properties of iron filings and steel-fiber-reinforced concrete for solar/thermal energy storage application is presented in this report. It takes into account the results of measurements of thermal conductivity, thermal resistivity, thermal diffusivity and the results of compressive strength, density as well as energy storage capacity calculated from the knowledge of the above measured parameters. The experimental testing method is described as well: based upon the linear heat source theory, it requires the use of a special probe to be inserted into the sample. The experimentation was forwarded to test concrete aggregate mixtures with three different sizes and same quantity of steel fibers;two different quantities of iron filings and one plain concrete. The measurements were carried out from the pouring time of cubic samples and were ended up when hardened conditions were achieved. The results indicate that the steel fibers and iron filings have influence on the thermal and mechanical properties of the concretes tested, thus the iron filings and steel fibers reinforced concrete is suitable for better solar/thermal energy storage due to an increase in storage capacity over plain concrete.
文摘According to the website of the World Intellectual Property Organization, ZTE filed for 2826 applications in 2011. The company moved up from its No. 2 spot in 2010 The statistics also show consistent growth in the number of international patents that ZTE has filed over the past five years. The number of patents ZTE filed for grew more than 50 per cent yearonyear in 2011.
文摘Manufacturing industry plays a pivotal role in the overall development of national economy. With the rapid development of China's manufacturing industry, we must attach importance to the basic work of fitter. With the technological innovation of manufacturing industry and the overall development of precision, we should actively conduct in-depth research on fitter technology and analyze fitter file matching skills to ensure the comprehensive development of fitter technology and promote the improvement of the overall level of China's manufacturing industry.
基金a phased result of the Research on the Jurisprudence,Operation and Effectiveness of Constitution Publicity,a research project of humanities and social sciences launched by Chongqing Municipal Education Commission. The project No. is 19SKCH017
文摘The PAN Hongbin case raised to the academic circles the question of how to connect with the court proceedings after the People’s Congress filed for review.The solution to this problem should focus on the functional positioning of China’s recording and review system,whether it involves the specific rights of citizens in individual cases.From the actual situation in China,the development trend of the constitutional review systems in various countries in the world,and the attitudes of the National People’s Congress and the academic circle,the protection of civil rights should be one of the functions of record review.According to the relevant provisions of the Legislative Law and the Law on the Supervision of Standing Committees of People’s Congresses at Various Levels,our courts should construct a dual complementary mechanism for review requests from the Supreme People’s Court and review recommendations from local people’s courts at all levels in the litigation process.Meanwhile,according to the retrospective theory of the law,the filing review filed by the parties after the court ’s lawsuit should be retroactive to the parties themselves,and the law should provide for a system to initiate retrial proceedings in this case to relieve the parties’ rights.
基金We are grateful for the project grants supported by the Major Science and Technology Programs for Water Pollution Control and Management of China(Nos.2012ZX07205-001 and 2017ZX7103-007).
文摘This study focuses on identifying the factors under which mixed microbial seeds assist bio-chemical denitrification when Scrap Iron Filings(SIF)are used as electron donors and adsorbents in low C/N ratio waters.Batch studies were conducted in abiotic and biotic reactors containing fresh and aged SIF under different dissolved oxygen concentrations with NO_(3)^(-)−N and/or PO_(4)^(3−)influent(s)and their nitrate/phosphate removal and by-product formations were studied.Batch reactors were seeded with a homogenized mixed microbial inoculum procured from natural sludges which were enriched over 6 months under denitrifying conditions in the presence of SIF.Results indicated that when influent containing 40 mg/L of NO_(3)^(-)−N was treated with 5 g SIF,79.9%nitrate reduction was observed in 8 days abiotically and 100%removal was accomplished in 20 days when the reactor was seeded.Both abiotic and seeded reactors removed more than 92%PO_(4)^(3−)under high DO conditions in 12 days.Abiotic and biochemical removal of NO_(3)^(-)−N and abiotic removal of PO_(4)^(3−)were higher under independent NO_(3)^(-)−N/PO_(4)^(3−)loading,while 99%PO_(4)^(3−)was removed biochemically under combined NO_(3)^(-)−N and PO_(4)^(3−)loading.This study furthers the understandings of nitrate and phosphate removal in Zero Valent Iron(ZVI)assisted mixed microbial systems to encourage the application of SIF-supported bio-chemical processes in the simultaneous removals of these pollutants.
文摘Journal Customer services For ordering information,claims and any enquiry concerning your joumal subscription please go to contact your nearest office.America:Tel:(401)515--4764 Europe,Middle East,Africa and Asia Pacific:Email:asiaar@163.com;523404392@qq.com;434421224@qq.com Tel:+86-551-65148112 Annual subscription rate(12 issues):US$300 Instructions for Submissions AlI manuscripts should be submitted in a single file(ineluding text,notes,references,figures,and tables)in MS-Word(doc)or Ado-be Acrobat(pdf)format only by email to asiaar@163.com.
文摘Submission Manuscripts should be submitted by one of the authors of the manuscript through the online Manuscript Tracking System(MTS)(http://mc03.manuscriptcentral.com/epphy).Regardless of the source of the word-processing tool,only electronic PDF(,pdf)or Word(doc,.docx,.rtf)files can be submitted through the MTS.
基金supported in part by the National Key Laboratory of Science and Technology on Space Microwave(Grant Nos.HTKJ2022KL504009 and HTKJ2022KL5040010).
文摘With the increase in the quantity and scale of Static Random-Access Memory Field Programmable Gate Arrays (SRAM-based FPGAs) for aerospace application, the volume of FPGA configuration bit files that must be stored has increased dramatically. The use of compression techniques for these bitstream files is emerging as a key strategy to alleviate the burden on storage resources. Due to the severe resource constraints of space-based electronics and the unique application environment, the simplicity, efficiency and robustness of the decompression circuitry is also a key design consideration. Through comparative analysis current bitstream file compression technologies, this research suggests that the Lempel Ziv Oberhumer (LZO) compression algorithm is more suitable for satellite applications. This paper also delves into the compression process and format of the LZO compression algorithm, as well as the inherent characteristics of configuration bitstream files. We propose an improved algorithm based on LZO for bitstream file compression, which optimises the compression process by refining the format and reducing the offset. Furthermore, a low-cost, robust decompression hardware architecture is proposed based on this method. Experimental results show that the compression speed of the improved LZO algorithm is increased by 3%, the decompression hardware cost is reduced by approximately 60%, and the compression ratio is slightly reduced by 0.47%.
文摘Volocopter,a pioneering German company in the electric vertical take-off and landing(eVTOL)aircraft sector,recently filed for bankruptcy,drawing significant international attention.Founded in 2011,Volocopter was hailed as a leader in the emerging air taxi industry,benefitting from technological breakthroughs and substantial international investment.
基金the Fifth Batch of Innovation Teams of Wuzhou Meteorological Bureau"Wuzhou Innovation Team for Enhancing the Comprehensive Meteorological Observation Ability through Digitization and Intelligence"Wuzhou Science and Technology Planning Project(202402122,202402119).
文摘[Objective]In response to the issue of insufficient integrity in hourly routine meteorological element data files,this paper aims to improve the availability and reliability of data files,and provide high-quality data file support for meteorological forecasting and services.[Method]In this paper,an efficient and accurate method for data file quality control and fusion processing is developed.By locating the missing measurement time,data are extracted from the"AWZ.db"database and the minute routine meteorological element data file,and merged into the hourly routine meteorological element data file.[Result]Data processing efficiency and accuracy are significantly improved,and the problem of incomplete hourly routine meteorological element data files is solved.At the same time,it emphasizes the importance of ensuring the accuracy of the files used and carefully checking and verifying the fusion results,and proposes strategies to improve data quality.[Conclusion]This method provides convenience for observation personnel and effectively improves the integrity and accuracy of data files.In the future,it is expected to provide more reliable data support for meteorological forecasting and services.
基金supported by the fund from Tianjin Municipal Science and Technology Bureau(22JCYBJC01390).
文摘At present,the polymerase chain reaction(PCR)amplification-based file retrieval method is the mostcommonly used and effective means of DNA file retrieval.The number of orthogonal primers limitsthe number of files that can be accurately accessed,which in turn affects the density in a single oligo poolof digital DNA storage.In this paper,a multi-mode DNA sequence design method based on PCR file retrie-val in a single oligonucleotide pool is proposed for high-capacity DNA data storage.Firstly,by analyzingthe maximum number of orthogonal primers at each predicted primer length,it was found that the rela-tionship between primer length and the maximum available primer number does not increase linearly,and the maximum number of orthogonal primers is on the order of 10^(4).Next,this paper analyzes themaximum address space capacity of DNA sequences with different types of primer binding sites for filemapping.In the case where the capacity of the primer library is R(where R is even),the number ofaddress spaces that can be mapped by the single-primer DNA sequence design scheme proposed in thispaper is four times that of the previous one,and the two-level primer DNA sequence design scheme can reach [R/2·(R/2-1)]^(2)times.Finally,a multi-mode DNA sequence generation method is designed based onthe number of files to be stored in the oligonucleotide pool,in order to meet the requirements of the ran-dom retrieval of target files in an oligonucleotide pool with large-scale file numbers.The performance ofthe primers generated by the orthogonal primer library generator proposed in this paper is verified,andthe average Gibbs free energy of the most stable heterodimer formed between the orthogonal primersproduced is−1 kcal·(mol·L^(−1))^(−1)(1 kcal=4.184 kJ).At the same time,by selectively PCR-amplifying theDNA sequences of the two-level primer binding sites for random access,the target sequence can be accu-rately read with a minimum of 10^(3) reads,when the primer binding site sequences at different positionsare mutually different.This paper provides a pipeline for orthogonal primer library generation and multi-mode mapping schemes between files and primers,which can help achieve precise random access to filesin large-scale DNA oligo pools.
文摘We now differentiate between the requirements for new and revised submissions.You may choose to submit your manuscript as a single Word or PDF file to be used in the refereeing process.Only when your paper is at the revision stage,will you be requested to put your paper into a'correct format'for acceptance and provide the items required for the publication of your article.
基金supported by the Ongoing Research Funding program(ORF-2025-636),King Saud University,Riyadh,Saudi Arabia.
文摘The healthcare sector involves many steps to ensure efficient care for patients,such as appointment scheduling,consultation plans,online follow-up,and more.However,existing healthcare mechanisms are unable to facilitate a large number of patients,as these systems are centralized and hence vulnerable to various issues,including single points of failure,performance bottlenecks,and substantial monetary costs.Furthermore,these mechanisms are unable to provide an efficient mechanism for saving data against unauthorized access.To address these issues,this study proposes a blockchain-based authentication mechanism that authenticates all healthcare stakeholders based on their credentials.Furthermore,also utilize the capabilities of the InterPlanetary File System(IPFS)to store the Electronic Health Record(EHR)in a distributed way.This IPFS platform addresses not only the issue of high data storage costs on blockchain but also the issue of a single point of failure in the traditional centralized data storage model.The simulation results demonstrate that our model outperforms the benchmark schemes and provides an efficient mechanism for managing healthcare sector operations.The results show that it takes approximately 3.5 s for the smart contract to authenticate the node and provide it with the decryption key,which is ultimately used to access the data.The simulation results show that our proposed model outperforms existing solutions in terms of execution time and scalability.The execution time of our model smart contract is around 9000 transactions in just 6.5 s,while benchmark schemes require approximately 7 s for the same number of transactions.
文摘We now differentiate between the requirements for new and revised submissions.You may choose to submit your manuscript as a single Word or PDF file to be used in the refereeing process.Only when your paper is at the revision stage,will you be requested to put your paper into a'correct format'for acceptance and provide the items required for the publication of your article.
基金supported in part by Natural Science Foundation of Hubei Province of China under Grant 2023AFB016the 2022 Opening Fund for Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering under Grant 2022SDSJ02the Construction Fund for Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering under Grant 2019ZYYD007.
文摘Images and videos play an increasingly vital role in daily life and are widely utilized as key evidentiary sources in judicial investigations and forensic analysis.Simultaneously,advancements in image and video processing technologies have facilitated the widespread availability of powerful editing tools,such as Deepfakes,enabling anyone to easily create manipulated or fake visual content,which poses an enormous threat to social security and public trust.To verify the authenticity and integrity of images and videos,numerous approaches have been proposed,which are primarily based on content analysis and their effectiveness is susceptible to interference from various image or video post-processing operations.Recent research has highlighted the potential of file containers analysis as a promising forensic approach that offers efficient and interpretable results.However,there is still a lack of review articles on this kind of approach.In order to fill this gap,we present a comprehensive review of file containers-based image and video forensics in this paper.Specifically,we categorize the existing methods into two distinct stages,qualitative analysis and quantitative analysis.In addition,an overall framework is proposed to organize the exiting approaches.Then,the advantages and disadvantages of the schemes used across different forensic tasks are provided.Finally,we outline the trends in this research area,aiming to provide valuable insights and technical guidance for future research.
