Based on a physical understanding of nonlinearity and mismatch, a novel offset-cancellation technique for low voltage CMOS differential amplifiers is proposed. The technique transfers the offset voltage from the outpu...Based on a physical understanding of nonlinearity and mismatch, a novel offset-cancellation technique for low voltage CMOS differential amplifiers is proposed. The technique transfers the offset voltage from the output to other parts of the differential amplifier and can greatly reduce the input-referred offset voltage without extra power consumption. A 1.8V CMOS differential amplifier is implemented in 0.18μm CMOS process using the proposed technique. The simulation results show that the technique could reduce the input-referred offset voltage of the amplifier by 40% with a 20% load transistor mismatch and a 10% input differential transistor mismatch. Moreover, the proposed technique consumes the least power and achieves the highest integration among various offset-cancellation techniques.展开更多
A new limited memory symmetric rank one algorithm is proposed. It combines a modified self-scaled symmetric rank one （SSR1） update with the limited memory and nonmonotone line search technique. In this algorithm, th...A new limited memory symmetric rank one algorithm is proposed. It combines a modified self-scaled symmetric rank one （SSR1） update with the limited memory and nonmonotone line search technique. In this algorithm, the descent search direction is generated by inverse limited memory SSR1 update, thus simplifying the computation. Numerical comparison of the algorithm and the famous limited memory BFGS algorithm is given. Comparison results indicate that the new algorithm can process a kind of large-scale unconstrained optimization problems.展开更多
Objectives:Clinical education and experience in the clinical environment play an important role in shaping the clinical experience.Effective clinical teaching improves the clinical practice of the nursing trainees whi...Objectives:Clinical education and experience in the clinical environment play an important role in shaping the clinical experience.Effective clinical teaching improves the clinical practice of the nursing trainees which in turn improves the quality of patient care.It mandates for the clinical instructor with desired qualities,to have a positive influence in clinical education.This study examined nurse trainees'perceptions of clinical instructor characteristics.Methods:The current study was conducted in a multi-cultural tertiary setting using a cross-sectional descriptive design.Using convenience sampling,302 trainees were chosen as participants for the study,and there were 296 respondents.The data were collected from the participants using the Nursing Clinical Teacher Effectiveness Inventory(NCTEI)tool.Results:The findings of the study revealed that the clinical instructors have scored high in personality(scoring percentage=84.0%)and relatively low in teaching ability(scoring percentage=81.3%).Also,the overall perception was almost the same among all the trainees though there was a slight variation in their rating of each dimension.Conclusions:Nursing trainees indicated the instructors as having good personality and relatively low teaching ability.This mandates the clinical instructors in the clinical environment to empower themselves in this area of improvement.This helps the teaching institutions to consider all the domains of effective clinical instructor characteristics while recruitment and also organize programs giving emphasis on building and developing these characteristics to create effective instructors.展开更多
In this paper, A Belief Propagation concatenated Orderd-Statistic Decoder (BP-OSD) based on accumulated Log-Likelihood Ratio (LLR) is proposed for medium and short lengths Low Density Parity-Check (LDPC) codes coded B...In this paper, A Belief Propagation concatenated Orderd-Statistic Decoder (BP-OSD) based on accumulated Log-Likelihood Ratio (LLR) is proposed for medium and short lengths Low Density Parity-Check (LDPC) codes coded Bit-Interleaved Coded Modulation (BICM) systems. The accumulated soft output values delivered by every BP iteration are used as reliability values of Soft-Input Soft-Output OSD (SISO-OSD) decoder and the soft output of SISO-OSD is used as a priori probabilities of the demodulator for the next iteration. Simulation results show that this improved algorithm achieves noticeable performance gain with only modest increase in computation complexity.展开更多
This article taking national current affairs decisions as entry points, the theory related to regional economy as basis, analyzes the development relation between regional economy and local universities, thus puts for...This article taking national current affairs decisions as entry points, the theory related to regional economy as basis, analyzes the development relation between regional economy and local universities, thus puts forward countermeasures to achieve the interactive and coordinating development of Hebei coastal regional economy and local universities.展开更多
Mehrotra's recent suggestion of a predictor corrector variant of primal dual interior point method for linear programming is currently the interior point method of choice for linear programming. In this work t...Mehrotra's recent suggestion of a predictor corrector variant of primal dual interior point method for linear programming is currently the interior point method of choice for linear programming. In this work the authors give a predictor corrector interior point algorithm for monotone variational inequality problems. The algorithm was proved to be equivalent to a level 1 perturbed composite Newton method. Computations in the algorithm do not require the initial iteration to be feasible. Numerical results of experiments are presented.展开更多
According to five consecutive year＇ s mental Health survey for freshmen in a higher vocational school, it is found that： vocational students＇ mental health is gradually improved; the most prominent psychological pr...According to five consecutive year＇ s mental Health survey for freshmen in a higher vocational school, it is found that： vocational students＇ mental health is gradually improved; the most prominent psychological problems among higher vocational students are： compulsion, depression and interpersonal communication; boys＇ mental health is significantly better than girls＇ ; students from different grades have varies mental health problems.展开更多
A questionnaire research in ethics was conducted to get the view of students of medical universities in Shanghai on genomics and genetic discrimination. We find that 66% respondents indicated their willingness to unde...A questionnaire research in ethics was conducted to get the view of students of medical universities in Shanghai on genomics and genetic discrimination. We find that 66% respondents indicated their willingness to understand the genetic information and 79% of respondents mind their own genetic information be aware of by other people. In contrast, 77% of the respondents believe that medical organization are not able to protect personal genetic information from disclose. Hence, it is significant to take some measures to preserve citizen's genetic information privacy. Depending on our results, we put forward our suggestion to this problem.展开更多
The development of modem information technology to promote the progress of human society plays an important role, which has been in an important position in higher education; the development of college physical educat...The development of modem information technology to promote the progress of human society plays an important role, which has been in an important position in higher education; the development of college physical education plays a huge role in promoting reform and innovation of physical education from not open support of information technology. Through the method of literature, the survey interview, mathematical statistics, surveys and other methods of college sports information systems research and analysis, we have carried out to explore the information technology in school sports in which the status and role, combined with the actual proposed full IT in school sports in the role of soecific measures. It is to meet the needs of the new era of College Physical Education.展开更多
文摘Based on a physical understanding of nonlinearity and mismatch, a novel offset-cancellation technique for low voltage CMOS differential amplifiers is proposed. The technique transfers the offset voltage from the output to other parts of the differential amplifier and can greatly reduce the input-referred offset voltage without extra power consumption. A 1.8V CMOS differential amplifier is implemented in 0.18μm CMOS process using the proposed technique. The simulation results show that the technique could reduce the input-referred offset voltage of the amplifier by 40% with a 20% load transistor mismatch and a 10% input differential transistor mismatch. Moreover, the proposed technique consumes the least power and achieves the highest integration among various offset-cancellation techniques.
基金the National Natural Science Foundation of China(10471062)the Natural Science Foundation of Jiangsu Province(BK2006184)~~
文摘A new limited memory symmetric rank one algorithm is proposed. It combines a modified self-scaled symmetric rank one （SSR1） update with the limited memory and nonmonotone line search technique. In this algorithm, the descent search direction is generated by inverse limited memory SSR1 update, thus simplifying the computation. Numerical comparison of the algorithm and the famous limited memory BFGS algorithm is given. Comparison results indicate that the new algorithm can process a kind of large-scale unconstrained optimization problems.
基金The study was supported by a grant from the research center at King Fahad Medical City under RFA:018-010 and this didn't influence the results of the study.
文摘Objectives:Clinical education and experience in the clinical environment play an important role in shaping the clinical experience.Effective clinical teaching improves the clinical practice of the nursing trainees which in turn improves the quality of patient care.It mandates for the clinical instructor with desired qualities,to have a positive influence in clinical education.This study examined nurse trainees'perceptions of clinical instructor characteristics.Methods:The current study was conducted in a multi-cultural tertiary setting using a cross-sectional descriptive design.Using convenience sampling,302 trainees were chosen as participants for the study,and there were 296 respondents.The data were collected from the participants using the Nursing Clinical Teacher Effectiveness Inventory(NCTEI)tool.Results:The findings of the study revealed that the clinical instructors have scored high in personality(scoring percentage=84.0%)and relatively low in teaching ability(scoring percentage=81.3%).Also,the overall perception was almost the same among all the trainees though there was a slight variation in their rating of each dimension.Conclusions:Nursing trainees indicated the instructors as having good personality and relatively low teaching ability.This mandates the clinical instructors in the clinical environment to empower themselves in this area of improvement.This helps the teaching institutions to consider all the domains of effective clinical instructor characteristics while recruitment and also organize programs giving emphasis on building and developing these characteristics to create effective instructors.
基金Supported by the National Natural Science Foundation of China (No: 60496311)
文摘In this paper, A Belief Propagation concatenated Orderd-Statistic Decoder (BP-OSD) based on accumulated Log-Likelihood Ratio (LLR) is proposed for medium and short lengths Low Density Parity-Check (LDPC) codes coded Bit-Interleaved Coded Modulation (BICM) systems. The accumulated soft output values delivered by every BP iteration are used as reliability values of Soft-Input Soft-Output OSD (SISO-OSD) decoder and the soft output of SISO-OSD is used as a priori probabilities of the demodulator for the next iteration. Simulation results show that this improved algorithm achieves noticeable performance gain with only modest increase in computation complexity.
文摘This article taking national current affairs decisions as entry points, the theory related to regional economy as basis, analyzes the development relation between regional economy and local universities, thus puts forward countermeasures to achieve the interactive and coordinating development of Hebei coastal regional economy and local universities.
文摘Mehrotra's recent suggestion of a predictor corrector variant of primal dual interior point method for linear programming is currently the interior point method of choice for linear programming. In this work the authors give a predictor corrector interior point algorithm for monotone variational inequality problems. The algorithm was proved to be equivalent to a level 1 perturbed composite Newton method. Computations in the algorithm do not require the initial iteration to be feasible. Numerical results of experiments are presented.
文摘According to five consecutive year＇ s mental Health survey for freshmen in a higher vocational school, it is found that： vocational students＇ mental health is gradually improved; the most prominent psychological problems among higher vocational students are： compulsion, depression and interpersonal communication; boys＇ mental health is significantly better than girls＇ ; students from different grades have varies mental health problems.
文摘A questionnaire research in ethics was conducted to get the view of students of medical universities in Shanghai on genomics and genetic discrimination. We find that 66% respondents indicated their willingness to understand the genetic information and 79% of respondents mind their own genetic information be aware of by other people. In contrast, 77% of the respondents believe that medical organization are not able to protect personal genetic information from disclose. Hence, it is significant to take some measures to preserve citizen's genetic information privacy. Depending on our results, we put forward our suggestion to this problem.
文摘The development of modem information technology to promote the progress of human society plays an important role, which has been in an important position in higher education; the development of college physical education plays a huge role in promoting reform and innovation of physical education from not open support of information technology. Through the method of literature, the survey interview, mathematical statistics, surveys and other methods of college sports information systems research and analysis, we have carried out to explore the information technology in school sports in which the status and role, combined with the actual proposed full IT in school sports in the role of soecific measures. It is to meet the needs of the new era of College Physical Education.
