For each real number x∈(0,1),let[a_(1)(x),a_(2)(x),…,a_n(x),…]denote its continued fraction expansion.We study the convergence exponent defined byτ(x)=inf{s≥0:∞∑n=1(a_(n)(x)a_(n+1)(x))^(-s)<∞},which reflect...For each real number x∈(0,1),let[a_(1)(x),a_(2)(x),…,a_n(x),…]denote its continued fraction expansion.We study the convergence exponent defined byτ(x)=inf{s≥0:∞∑n=1(a_(n)(x)a_(n+1)(x))^(-s)<∞},which reflects the growth rate of the product of two consecutive partial quotients.As a main result,the Hausdorff dimensions of the level sets ofτ(x)are determined.展开更多
BACKGROUND Percutaneous hepatobiliary drainage(PTCD)is an effective method for the treatment of biliary obstruction and other diseases,but postoperative complications are still one of the important problems faced by p...BACKGROUND Percutaneous hepatobiliary drainage(PTCD)is an effective method for the treatment of biliary obstruction and other diseases,but postoperative complications are still one of the important problems faced by patients.Continuous nursing is a comprehensive nursing model that plays an important role in postoperative recovery.The purpose of this study was to investigate the effect of continuous nursing on the incidence of complications in patients after PTCD surgery through meta-analysis and to evaluate its efficacy and safety.AIM To evaluate the effect of extended nursing on the incidence of complications in discharged patients after percutaneous transhepatic biliary drainage(PTBD).METHODS Randomized controlled studies on PTBD postdischarge extended care were identified in the CNKI,Wanfang,VIP,CBM,PubMed,Cochrane Library,Embase,Web of Science,and other databases.The quality of the included studies was evaluated using the Joanna Briggs Institute of Australia literature quality evaluation tool,and a meta-analysis of the included studies was performed with RevMan 5.4 software.RESULTS Finally,9 studies were included,with a total sample size of 854 patients(425 patients in the control group and 429 patients in the intervention group).Meta-analysis revealed that extended care effectively reduced biliary tract infection(RR:0.42,95%CI:0.30-0.57),puncture wound infection(RR:0.19,95%CI:0.06-0.65),catheter protrusion or displacement in discharged patients after PTBD(RR:0.31,95%CI:0.18-0.54),catheter blockage(RR:0.23,95%CI:0.13-0.42),skin infection around the drainage tube(RR:0.30,95%CI:0.12-0.77),and catheter-related readmissions(RR:0.34,95%CI:0.18-0.65)(P<0.05).CONCLUSION Compared with conventional discharge care,extended care can effectively reduce the occurrence of complications such as biliary tract infection,puncture wound infection,catheter prolapse or displacement,catheter blockage,skin infection around the drainage tube,and catheter-related readmission in discharged patients after PTBD.展开更多
Cambodia,funded and developed by China National Heavy Machinery Corporation(CHMC).This project has an installed capacity of 150 MW.Having completed its water storage in 2023,the plant,once operational,will provide Cam...Cambodia,funded and developed by China National Heavy Machinery Corporation(CHMC).This project has an installed capacity of 150 MW.Having completed its water storage in 2023,the plant,once operational,will provide Cambodia with a stable power supply.Moreover,CHMC has signed a Memorandum of Understanding to develop the 1,000 MW Upper Stung Tatay Pumped Storage Power Station-a key project,and the signing was witnessed by leaders of both countries.It will serve as a critical reserve and regulating power source in Cambodia,laying a foundation for subsequent renewable energy development in the country.展开更多
In 2023, the global economy faced multiple challenges and opportunities. It was pummeled by inflation, geopolitical tensions, and trade conflict while structural changes took place with a transition from old to new dr...In 2023, the global economy faced multiple challenges and opportunities. It was pummeled by inflation, geopolitical tensions, and trade conflict while structural changes took place with a transition from old to new drivers of growth, the mushrooming emerging industries, and the reshaping of the global value chains.展开更多
On May 30,t he Ch ina Council for the Promotion of International Trade(CCPIT)held a regular press conference.Zhao Ping,the spokesperson for the CCPIT,said that since the beginning of this year,the number of issued ATA...On May 30,t he Ch ina Council for the Promotion of International Trade(CCPIT)held a regular press conference.Zhao Ping,the spokesperson for the CCPIT,said that since the beginning of this year,the number of issued ATA Carnets has increased significantly,reflecting the fact that China’s foreign trade policy portfolio is taking effect,foreign trade enterprises have been more active,and their motivation and enthusiasm for expanding the international market have continued to rise.展开更多
In response to the severe challenges posed by global climate change and the sustainable development goals of reaching peak carbon emissions and achieving carbon neutrality, green development has become a shared object...In response to the severe challenges posed by global climate change and the sustainable development goals of reaching peak carbon emissions and achieving carbon neutrality, green development has become a shared objective and necessity for economic growth and social transformation worldwide. China and the ASEAN countries share extensive common interests and positions on addressing climate change. Both have consistently emphasized green and sustainable development in their pursuit of shared prosperity. They have engaged in extensive practical cooperation in areas such as ecological conservation and clean energy.展开更多
The central bank data shows Bangladesh's import of RMG raw materials such as raw cotton,yarn,fabric and dyeing materials was US$7.92 billion in the first half of FY'24.The BGMEA reports Bangladesh's appare...The central bank data shows Bangladesh's import of RMG raw materials such as raw cotton,yarn,fabric and dyeing materials was US$7.92 billion in the first half of FY'24.The BGMEA reports Bangladesh's apparel exports are 71 per cent cotton-based.The country,however,meets 99 per cent of its cotton demand through imports.After Brazil,India is the second la rgest cotton supplier to Bangladesh and holds a 12 per cent market share,according to United States Department of Agriculture (USDA).展开更多
Bangladeshi textile and garment sectors defied the global challenges over the last five years and continued to grow although the growth momentum was not so strong before the COVID-19 pandemic.Before the start of the p...Bangladeshi textile and garment sectors defied the global challenges over the last five years and continued to grow although the growth momentum was not so strong before the COVID-19 pandemic.Before the start of the pandemic,both the textile and garment sectors were growing at a higher rate because of rising demand from the international clothing retailers and brands because of two main reasons including the trade war between USA and China and competitive prices of locally made garment.展开更多
In May,the policies and measures to stabilize growth,employment and prices continued to take effect,the production and demand recovered steadily,employment and prices were generally stable,and transformation and upgra...In May,the policies and measures to stabilize growth,employment and prices continued to take effect,the production and demand recovered steadily,employment and prices were generally stable,and transformation and upgrading was further advanced.The national economy sustained the recovery momentum.展开更多
The data of key enterprises tracked(referred to as key enterprises)by China Cotton Textile As-Sociation(referred to as"CCTA")show that in the first quarter of 2023,the main economic indicators of China's...The data of key enterprises tracked(referred to as key enterprises)by China Cotton Textile As-Sociation(referred to as"CCTA")show that in the first quarter of 2023,the main economic indicators of China's cotton textile industry continue to recoverand develop well.展开更多
After more than 30 years’development,during which the scale of China’s transportation infrastructure has continuously expanded,transportation supply products have also been continuously enriched,and the technical le...After more than 30 years’development,during which the scale of China’s transportation infrastructure has continuously expanded,transportation supply products have also been continuously enriched,and the technical level has achieved leap-forward development from following to leading in some fields.At present,the transportation industry has entered a new stage of digital and green high-quality development.展开更多
Introduction: International migration has always existed, primarily as a means to find economic opportunity. Recently, the number of health care professionals seeking to work outside Albania is growing rapidly. In 202...Introduction: International migration has always existed, primarily as a means to find economic opportunity. Recently, the number of health care professionals seeking to work outside Albania is growing rapidly. In 2021 alone, 1073 nurses left Albania. The departure of health care professionals is reflected in education where it can be observed that a good part of the students who finished the bachelor’s level program did not enroll to continue the second level of study in the master’s. The student’s decision not to continue further levels of education has brought consequences from programs shutting down due to lack of students and forcing the university to spread out the few remaining students to other programs. Objective: The purpose of the study was to explore the opinions of Midwifery Students studying at the Bachelor level, regarding their professional future and continuing education. Methodology: This is a cross-sectional study. In this study are included the students of the bachelor level of education. Student participating are studying Midwifery in the 2022-2023 academic year, at the Faculty of Technical Medical Sciences at the University of Medicine, Albania. Results: The students on average believe they can find a job as a midwife. The career is relatively safe and the profession of midwifery will ensure economic well-being for them. Most of the students hope to emigrate and develop their professional career outside of Albania. This was a surprise given that most frequent answers given by the students for not continuing their Master’s level education was the fact that the program was not accredited, their Bachelor’s diploma was also not accredited and so not recognized by other countries, the cost of continuing their studies was too high and their desire for a better economic and social status which they cannot get in Albania. The majority of students participating in the study identified emigration as the main way they plan to further their studies. Conclusions and Recommendations: Although the students had willingly chosen to continue the midwifery diploma, as they thought it would provide them with a proper future, this dignified professional future was seen as unattainable in Albania so they are seeking it out in more developed countries. A significant number of health professionals prefer to continue their second cycle studies in another country. The professional security within their home country does not satisfy the students. As the market demand for nurses around the globe escalates, the changes and consequences associated with nurse migration are increasingly in need of policy solutions that will address the needs of all parties involved. .展开更多
Branched continued fractions are one of the multidimensional generalization of the continued fractions. Branched continued fractions with not equivalent variables are an analog of the regular C-fractions for multiple ...Branched continued fractions are one of the multidimensional generalization of the continued fractions. Branched continued fractions with not equivalent variables are an analog of the regular C-fractions for multiple power series. We consider 1-periodic branched continued fraction of the special form which is an analog fraction with not equivalent variables if the values of that variables are fixed. We establish an analog of the parabola theorem for that fraction and estimate truncation error bounds for that fractions at some restrictions. We also propose to use weight coefficients for obtaining different parabolic regions for the same fraction without any additional restriction for first element.展开更多
There are many accelerating convergence factors (ACFs) for limit periodic continued fraction K(an/1)(an→a≠0). In this paper, some characteristics and comparative theorems are ob tained on ACFs. Two results are given...There are many accelerating convergence factors (ACFs) for limit periodic continued fraction K(an/1)(an→a≠0). In this paper, some characteristics and comparative theorems are ob tained on ACFs. Two results are given for most frequently used ACFs.展开更多
A famous theorem of Szemer'edi asserts that any subset of integers with posi- tive upper density contains arbitrarily arithmetic progressions. Let Fq be a finite field with q elements and Fq((X^-1)) be the power ...A famous theorem of Szemer'edi asserts that any subset of integers with posi- tive upper density contains arbitrarily arithmetic progressions. Let Fq be a finite field with q elements and Fq((X^-1)) be the power field of formal series with coefficients lying in Fq. In this paper, we concern with the analogous Szemeredi problem for continued fractions of Laurent series: we will show that the set of points x ∈ Fq((X-1)) of whose sequence of degrees of partial quotients is strictly increasing and contain arbitrarily long arithmetic progressions is of Hausdorff dimension 1/2.展开更多
The significant increase in the number of older adults in China,coupled with continuing industrialization and urbanization,has profound social and economic ramifications,including the evolution of major challenges to ...The significant increase in the number of older adults in China,coupled with continuing industrialization and urbanization,has profound social and economic ramifications,including the evolution of major challenges to public health,elder care services,policy-making,and the nation’s healthcare system.While the unprecedented changes in political and economic structures have obviously increased China’s productivity and revenues,what is less well understood is how they展开更多
Modem and efficient methods focus on signal analysis and have drawn researchers' attention to it in recent years. These methods mainly include Continuous Wavelet and Wavelet Packet transforms. The main advantage of t...Modem and efficient methods focus on signal analysis and have drawn researchers' attention to it in recent years. These methods mainly include Continuous Wavelet and Wavelet Packet transforms. The main advantage of the application of these Wavelets is their capacity to analyze the signal position in different occasions and places. However, in sites with high frequencies its resolution becomes much more difficult. Wavelet packet transform is a more advanced form of continuous wavelets and can make a perfect level by level resolution for each signal. Although very few studies have been done in the field. In order to do this, in the present study, f^st there was an attempt to do a modal analysis on the structure by the ANSYS finite elements software, then using MATLAB, the wavelet was investigated through a continuous wavelet analysis. Finally the results were displayed in 2-D location-coefficient figures. In the second form, transient-dynamic analysis was done on the structure to find out the characteristics of the damage and the wavelet packet energy rate index was suggested. The results indicate that suggested index in the second form is both practical and applicable, and also this index is sensitive to the intensity of the damage.展开更多
An essential prerequisite of any genetherapy technique is the efficient and stable de-livery of transferred DNA into the target cell.Avariety of techniques are available for directly in-troducing DNA into eukaryotic c...An essential prerequisite of any genetherapy technique is the efficient and stable de-livery of transferred DNA into the target cell.Avariety of techniques are available for directly in-troducing DNA into eukaryotic cells,includingcoprecipitation with calcium phosphate,electroporation and microinjection. The efficien-cy of most of these physical transfection tech-niques is less than one in ten thousand, and展开更多
Let x∈(0,1)be a real number with continued fraction expansion[a_(1)(x),a_(2)(x),a_(3)(x),⋯].This paper is concerned with the multifractal spectrum of the convergence exponent of{a_(n)(x)}_(n≥1) defined by τ(x):=in...Let x∈(0,1)be a real number with continued fraction expansion[a_(1)(x),a_(2)(x),a_(3)(x),⋯].This paper is concerned with the multifractal spectrum of the convergence exponent of{a_(n)(x)}_(n≥1) defined by τ(x):=inf{s≥0:∑n≥1an^(-s)(x)<∞}.展开更多
基金supported by the Scientific Research Fund of Hunan Provincial Education Department(21B0070)the Natural Science Foundation of Jiangsu Province(BK20231452)+1 种基金the Fundamental Research Funds for the Central Universities(30922010809)the National Natural Science Foundation of China(11801591,11971195,12071171,12171107,12201207,12371072)。
文摘For each real number x∈(0,1),let[a_(1)(x),a_(2)(x),…,a_n(x),…]denote its continued fraction expansion.We study the convergence exponent defined byτ(x)=inf{s≥0:∞∑n=1(a_(n)(x)a_(n+1)(x))^(-s)<∞},which reflects the growth rate of the product of two consecutive partial quotients.As a main result,the Hausdorff dimensions of the level sets ofτ(x)are determined.
文摘BACKGROUND Percutaneous hepatobiliary drainage(PTCD)is an effective method for the treatment of biliary obstruction and other diseases,but postoperative complications are still one of the important problems faced by patients.Continuous nursing is a comprehensive nursing model that plays an important role in postoperative recovery.The purpose of this study was to investigate the effect of continuous nursing on the incidence of complications in patients after PTCD surgery through meta-analysis and to evaluate its efficacy and safety.AIM To evaluate the effect of extended nursing on the incidence of complications in discharged patients after percutaneous transhepatic biliary drainage(PTBD).METHODS Randomized controlled studies on PTBD postdischarge extended care were identified in the CNKI,Wanfang,VIP,CBM,PubMed,Cochrane Library,Embase,Web of Science,and other databases.The quality of the included studies was evaluated using the Joanna Briggs Institute of Australia literature quality evaluation tool,and a meta-analysis of the included studies was performed with RevMan 5.4 software.RESULTS Finally,9 studies were included,with a total sample size of 854 patients(425 patients in the control group and 429 patients in the intervention group).Meta-analysis revealed that extended care effectively reduced biliary tract infection(RR:0.42,95%CI:0.30-0.57),puncture wound infection(RR:0.19,95%CI:0.06-0.65),catheter protrusion or displacement in discharged patients after PTBD(RR:0.31,95%CI:0.18-0.54),catheter blockage(RR:0.23,95%CI:0.13-0.42),skin infection around the drainage tube(RR:0.30,95%CI:0.12-0.77),and catheter-related readmissions(RR:0.34,95%CI:0.18-0.65)(P<0.05).CONCLUSION Compared with conventional discharge care,extended care can effectively reduce the occurrence of complications such as biliary tract infection,puncture wound infection,catheter prolapse or displacement,catheter blockage,skin infection around the drainage tube,and catheter-related readmission in discharged patients after PTBD.
文摘Cambodia,funded and developed by China National Heavy Machinery Corporation(CHMC).This project has an installed capacity of 150 MW.Having completed its water storage in 2023,the plant,once operational,will provide Cambodia with a stable power supply.Moreover,CHMC has signed a Memorandum of Understanding to develop the 1,000 MW Upper Stung Tatay Pumped Storage Power Station-a key project,and the signing was witnessed by leaders of both countries.It will serve as a critical reserve and regulating power source in Cambodia,laying a foundation for subsequent renewable energy development in the country.
文摘In 2023, the global economy faced multiple challenges and opportunities. It was pummeled by inflation, geopolitical tensions, and trade conflict while structural changes took place with a transition from old to new drivers of growth, the mushrooming emerging industries, and the reshaping of the global value chains.
文摘On May 30,t he Ch ina Council for the Promotion of International Trade(CCPIT)held a regular press conference.Zhao Ping,the spokesperson for the CCPIT,said that since the beginning of this year,the number of issued ATA Carnets has increased significantly,reflecting the fact that China’s foreign trade policy portfolio is taking effect,foreign trade enterprises have been more active,and their motivation and enthusiasm for expanding the international market have continued to rise.
文摘In response to the severe challenges posed by global climate change and the sustainable development goals of reaching peak carbon emissions and achieving carbon neutrality, green development has become a shared objective and necessity for economic growth and social transformation worldwide. China and the ASEAN countries share extensive common interests and positions on addressing climate change. Both have consistently emphasized green and sustainable development in their pursuit of shared prosperity. They have engaged in extensive practical cooperation in areas such as ecological conservation and clean energy.
文摘The central bank data shows Bangladesh's import of RMG raw materials such as raw cotton,yarn,fabric and dyeing materials was US$7.92 billion in the first half of FY'24.The BGMEA reports Bangladesh's apparel exports are 71 per cent cotton-based.The country,however,meets 99 per cent of its cotton demand through imports.After Brazil,India is the second la rgest cotton supplier to Bangladesh and holds a 12 per cent market share,according to United States Department of Agriculture (USDA).
文摘Bangladeshi textile and garment sectors defied the global challenges over the last five years and continued to grow although the growth momentum was not so strong before the COVID-19 pandemic.Before the start of the pandemic,both the textile and garment sectors were growing at a higher rate because of rising demand from the international clothing retailers and brands because of two main reasons including the trade war between USA and China and competitive prices of locally made garment.
文摘In May,the policies and measures to stabilize growth,employment and prices continued to take effect,the production and demand recovered steadily,employment and prices were generally stable,and transformation and upgrading was further advanced.The national economy sustained the recovery momentum.
文摘The data of key enterprises tracked(referred to as key enterprises)by China Cotton Textile As-Sociation(referred to as"CCTA")show that in the first quarter of 2023,the main economic indicators of China's cotton textile industry continue to recoverand develop well.
文摘After more than 30 years’development,during which the scale of China’s transportation infrastructure has continuously expanded,transportation supply products have also been continuously enriched,and the technical level has achieved leap-forward development from following to leading in some fields.At present,the transportation industry has entered a new stage of digital and green high-quality development.
文摘Introduction: International migration has always existed, primarily as a means to find economic opportunity. Recently, the number of health care professionals seeking to work outside Albania is growing rapidly. In 2021 alone, 1073 nurses left Albania. The departure of health care professionals is reflected in education where it can be observed that a good part of the students who finished the bachelor’s level program did not enroll to continue the second level of study in the master’s. The student’s decision not to continue further levels of education has brought consequences from programs shutting down due to lack of students and forcing the university to spread out the few remaining students to other programs. Objective: The purpose of the study was to explore the opinions of Midwifery Students studying at the Bachelor level, regarding their professional future and continuing education. Methodology: This is a cross-sectional study. In this study are included the students of the bachelor level of education. Student participating are studying Midwifery in the 2022-2023 academic year, at the Faculty of Technical Medical Sciences at the University of Medicine, Albania. Results: The students on average believe they can find a job as a midwife. The career is relatively safe and the profession of midwifery will ensure economic well-being for them. Most of the students hope to emigrate and develop their professional career outside of Albania. This was a surprise given that most frequent answers given by the students for not continuing their Master’s level education was the fact that the program was not accredited, their Bachelor’s diploma was also not accredited and so not recognized by other countries, the cost of continuing their studies was too high and their desire for a better economic and social status which they cannot get in Albania. The majority of students participating in the study identified emigration as the main way they plan to further their studies. Conclusions and Recommendations: Although the students had willingly chosen to continue the midwifery diploma, as they thought it would provide them with a proper future, this dignified professional future was seen as unattainable in Albania so they are seeking it out in more developed countries. A significant number of health professionals prefer to continue their second cycle studies in another country. The professional security within their home country does not satisfy the students. As the market demand for nurses around the globe escalates, the changes and consequences associated with nurse migration are increasingly in need of policy solutions that will address the needs of all parties involved. .
文摘Branched continued fractions are one of the multidimensional generalization of the continued fractions. Branched continued fractions with not equivalent variables are an analog of the regular C-fractions for multiple power series. We consider 1-periodic branched continued fraction of the special form which is an analog fraction with not equivalent variables if the values of that variables are fixed. We establish an analog of the parabola theorem for that fraction and estimate truncation error bounds for that fractions at some restrictions. We also propose to use weight coefficients for obtaining different parabolic regions for the same fraction without any additional restriction for first element.
基金Supported by the National Natural Science Foundation of china
文摘There are many accelerating convergence factors (ACFs) for limit periodic continued fraction K(an/1)(an→a≠0). In this paper, some characteristics and comparative theorems are ob tained on ACFs. Two results are given for most frequently used ACFs.
文摘A famous theorem of Szemer'edi asserts that any subset of integers with posi- tive upper density contains arbitrarily arithmetic progressions. Let Fq be a finite field with q elements and Fq((X^-1)) be the power field of formal series with coefficients lying in Fq. In this paper, we concern with the analogous Szemeredi problem for continued fractions of Laurent series: we will show that the set of points x ∈ Fq((X-1)) of whose sequence of degrees of partial quotients is strictly increasing and contain arbitrarily long arithmetic progressions is of Hausdorff dimension 1/2.
文摘The significant increase in the number of older adults in China,coupled with continuing industrialization and urbanization,has profound social and economic ramifications,including the evolution of major challenges to public health,elder care services,policy-making,and the nation’s healthcare system.While the unprecedented changes in political and economic structures have obviously increased China’s productivity and revenues,what is less well understood is how they
文摘Modem and efficient methods focus on signal analysis and have drawn researchers' attention to it in recent years. These methods mainly include Continuous Wavelet and Wavelet Packet transforms. The main advantage of the application of these Wavelets is their capacity to analyze the signal position in different occasions and places. However, in sites with high frequencies its resolution becomes much more difficult. Wavelet packet transform is a more advanced form of continuous wavelets and can make a perfect level by level resolution for each signal. Although very few studies have been done in the field. In order to do this, in the present study, f^st there was an attempt to do a modal analysis on the structure by the ANSYS finite elements software, then using MATLAB, the wavelet was investigated through a continuous wavelet analysis. Finally the results were displayed in 2-D location-coefficient figures. In the second form, transient-dynamic analysis was done on the structure to find out the characteristics of the damage and the wavelet packet energy rate index was suggested. The results indicate that suggested index in the second form is both practical and applicable, and also this index is sensitive to the intensity of the damage.
文摘An essential prerequisite of any genetherapy technique is the efficient and stable de-livery of transferred DNA into the target cell.Avariety of techniques are available for directly in-troducing DNA into eukaryotic cells,includingcoprecipitation with calcium phosphate,electroporation and microinjection. The efficien-cy of most of these physical transfection tech-niques is less than one in ten thousand, and
基金This research was supported by National Natural Science Foundation of China(11771153,11801591,11971195,12171107)Guangdong Natural Science Foundation(2018B0303110005)+1 种基金Guangdong Basic and Applied Basic Research Foundation(2021A1515010056)Kunkun Song would like to thank China Scholarship Council(CSC)for financial support(201806270091).
文摘Let x∈(0,1)be a real number with continued fraction expansion[a_(1)(x),a_(2)(x),a_(3)(x),⋯].This paper is concerned with the multifractal spectrum of the convergence exponent of{a_(n)(x)}_(n≥1) defined by τ(x):=inf{s≥0:∑n≥1an^(-s)(x)<∞}.