Genetic Programming (GP) is an important approach to deal with complex problem analysis and modeling, and has been applied in a wide range of areas. The development of GP involves various aspects, including design of ...Genetic Programming (GP) is an important approach to deal with complex problem analysis and modeling, and has been applied in a wide range of areas. The development of GP involves various aspects, including design of genetic operators, evolutionary controls and implementations of heuristic strategy, evaluations and other mechanisms. When designing genetic operators, it is necessary to consider the possible limitations of encoding methods of individuals. And when selecting evolutionary control strategies, it is also necessary to balance search efficiency and diversity based on representation characteristics as well as the problem itself. More importantly, all of these matters, among others, have to be implemented through tedious coding work. Therefore, GP development is both complex and time-consuming. To overcome some of these difficulties that hinder the enhancement of GP development efficiency, we explore the feasibility of mutual assistance among GP variants, and then propose a rapid GP prototyping development method based on πGrammatical Evolution (πGE). It is demonstrated through regression analysis experiments that not only is this method beneficial for the GP developers to get rid of some tedious implementations, but also enables them to concentrate on the essence of the referred problem, such as individual representation, decoding means and evaluation. Additionally, it provides new insights into the roles of individual delineations in phenotypes and semantic research of individuals.展开更多
Structural development defects essentially refer to code structure that violates object-oriented design principles. They make program maintenance challenging and deteriorate software quality over time. Various detecti...Structural development defects essentially refer to code structure that violates object-oriented design principles. They make program maintenance challenging and deteriorate software quality over time. Various detection approaches, ranging from traditional heuristic algorithms to machine learning methods, are used to identify these defects. Ensemble learning methods have strengthened the detection of these defects. However, existing approaches do not simultaneously exploit the capabilities of extracting relevant features from pre-trained models and the performance of neural networks for the classification task. Therefore, our goal has been to design a model that combines a pre-trained model to extract relevant features from code excerpts through transfer learning and a bagging method with a base estimator, a dense neural network, for defect classification. To achieve this, we composed multiple samples of the same size with replacements from the imbalanced dataset MLCQ1. For all the samples, we used the CodeT5-small variant to extract features and trained a bagging method with the neural network Roberta Classification Head to classify defects based on these features. We then compared this model to RandomForest, one of the ensemble methods that yields good results. Our experiments showed that the number of base estimators to use for bagging depends on the defect to be detected. Next, we observed that it was not necessary to use a data balancing technique with our model when the imbalance rate was 23%. Finally, for blob detection, RandomForest had a median MCC value of 0.36 compared to 0.12 for our method. However, our method was predominant in Long Method detection with a median MCC value of 0.53 compared to 0.42 for RandomForest. These results suggest that the performance of ensemble methods in detecting structural development defects is dependent on specific defects.展开更多
Interpretation results of RS images were taken as the foundation, ETM RS images of July 15, 2009 as the data source, ENVI was applied for the preprocessing, Arc GIS used to finish the interpretation, master data obtai...Interpretation results of RS images were taken as the foundation, ETM RS images of July 15, 2009 as the data source, ENVI was applied for the preprocessing, Arc GIS used to finish the interpretation, master data obtained, and VB used to complete program development. 12 representative landscape pattern indexes were selected, Excel data used to create Access database, and VB used to complete the program development. Selection of landscape pattern indexes, program development process and program usage were summarized, through comparing its results with Excel calculation results, it was found that calculation results of this program were correct, the usage was convenient, so needs of most users could be satisfied.展开更多
The early stage of pollen chamber development in ovule and the cytological mechanism of nucellar cell death were studied in Ginkgo biloba L. DNA ladder appearance and TUNEL assay demonstrated that the nucellar cel...The early stage of pollen chamber development in ovule and the cytological mechanism of nucellar cell death were studied in Ginkgo biloba L. DNA ladder appearance and TUNEL assay demonstrated that the nucellar cell death, doomed to bring about pollen chamber formation, was a process of programmed cell death (PCD). A spatial distribution of PCD was visualized during the development of pollen chamber. Together with the observation under the scanning electron microscope, these results have revealed that the early developmental pattern of pollen chamber consists of four phases. Firstly, several layers of the nucellar cells at the micropylar end elongate longitudinally. Thereafter, the uppermost layer of the nucellar cells at the micropylar end initiate PCD; and the nucellar cell death extends in a basally and laterally oriented direction to form a cavity. Finally, the epidermal cells at the micropylar end detach from the other epidermis by dehiscence, bringing about the opening of the pollen chamber. The early development of pollen chamber begins sometime after the stage of megasporocyte and continues by the time of the formation of megaspore tetrad, and finally completes at the stage of development of female gametophyte. This shows a synchronous development of megaspore and pollen chamber.展开更多
Morphological variations of the nucleus in starchy endosperm cell were observed by theelectron-transmisson microscope during endosperm development in rice. Along with thedevelopment of the starchy endosperm, the nucle...Morphological variations of the nucleus in starchy endosperm cell were observed by theelectron-transmisson microscope during endosperm development in rice. Along with thedevelopment of the starchy endosperm, the nuclei of the cells showed chromatin condensation,the typical feature of programmed cell death (PCD). The nuclei also showed nucleusdeformation, disruption of nuclear envelope, nucleoplasm leaking into the cytoplasm andnucleus disintegration resulting in nuclear residue formation. From the nucleus deformationto the nucleus disintegration, the morphological changes of the nucleus were orderlyprogressive. This indicated that the cell death of starchy endosperm in rice wasprogrammed cell death. Evans Blue staining observation showed that the cell death wasinitially detected in the central part of starchy endosperm in rice, then expandedoutward. The activities of superoxide dismutase (SOD) and catalase (CAT) in rice starchyendosperm both descended continuously as development progressed. The analysis of DNA ofrice starchy endosperm did not show the presence of DNA laddering. The above resultsshowed that the cell death of starchy endosperm in rice was a special form of PCD.展开更多
Initial teacher preparation and teachers’ continuing professional development are two significant pillars of the teacher education enterprise. The former encompasses a wide range of teachereducation initiatives at th...Initial teacher preparation and teachers’ continuing professional development are two significant pillars of the teacher education enterprise. The former encompasses a wide range of teachereducation initiatives at the levels of diploma, bachelor’s degree, postgraduate diploma, and even master’s degree for teacher licensure purposes. These are widely documented in the literature.What is important is how teacher professional development contributes to bolstering the teachereducator force, which is relatively insufficiently documented due to the very fact that different educational systems have somewhat different expectations of such programs in relation to the ideologies and theories underpinning the teacher professional development program design and curriculum offering. Taking stock of a postgraduate diploma program in English language teaching(PGDELT) for teachers’ continuing professional development with a 31-year history housed at a premier teacher education institution in Singapore, which has successfully graduated over 1, 000 English language teachers for colleges and universities in China, I intend to highlight some of its key features, as a former student and then a lecturer on the program, in order to draw implications for sustainable growth of language teacher education programs, especially those whose main purposes are to prepare teachers of English as a second or foreign language(ESL/EFL) and provide continuing professional development opportunities for such inservice teachers.展开更多
Over the past few decades,genetic selection and refined nutritional management have extensively been used to increase the growth rate and lean meat production of livestock.However,the rapid growth rates of modern bree...Over the past few decades,genetic selection and refined nutritional management have extensively been used to increase the growth rate and lean meat production of livestock.However,the rapid growth rates of modern breeds are often accompanied by a reduction in intramuscular fat deposition and increased occurrences of muscle abnor‑malities,impairing meat quality and processing functionality.Early stages of animal development set the long‑term growth trajectory of offspring.However,due to the seasonal reproductive cycles of ruminant livestock,gestational nutrient deficiencies caused by seasonal variations,frequent droughts,and unfavorable geological locations nega‑tively affect fetal development and their subsequent production efficiency and meat quality.Therefore,enrolling live‑stock in nutritional intervention strategies during gestation is effective for improving the body composition and meat quality of the offspring at harvest.These crucial early developmental stages include embryonic,fetal,and postnatal stages,which have stage‑specific effects on subsequent offspring development,body composition,and meat quality.This review summarizes contemporary research in the embryonic,fetal,and neonatal development,and the impacts of maternal nutrition on the early development and programming effects on the long‑term growth performance of livestock.Understanding the developmental and metabolic characteristics of skeletal muscle,adipose,and fibrotic tissues will facilitate the development of stage‑specific nutritional management strategies to optimize production efficiency and meat quality.展开更多
Recently, FTTH （fiber to the home） is spreading rapidly, and communication technology has become an indispensable part in our lives. FTTH installers who build the infi＇astructure must correspond to the progress of ...Recently, FTTH （fiber to the home） is spreading rapidly, and communication technology has become an indispensable part in our lives. FTTH installers who build the infi＇astructure must correspond to the progress of technology while ensuring a high quality of installation, and it is struggling to its counterpart. The present study is undertaken in order to propose effective vocational ability development program for FTTH installers from the approach of their skill. They are information network cabling-related qualification system and competitions as the ability evaluation system. Then the author concludes that this program makes a contribution to improving their skill and maintaining the quality of the optical fiber network in analyzing some example of actual installation work and the measurement result of the OTDR（optical time domain reflect） meter.展开更多
The Lower Cambrian Longwangmiao Fm gas reservoir in Moxi block of the Anyue Gas field,Sichuan Basin,is the largest single-sandbody integrated carbonate gas reservoir proved so far in China.Notwithstanding this reservo...The Lower Cambrian Longwangmiao Fm gas reservoir in Moxi block of the Anyue Gas field,Sichuan Basin,is the largest single-sandbody integrated carbonate gas reservoir proved so far in China.Notwithstanding this reservoir's advantages like large-scale reserves and high singlewell productivity,there are multiple complicated factors restricting its efficient development,such as a median content of hydrogen sulfide,low porosity and strong heterogeneity of fractureecave formation,various modes of gasewater occurrences,and close relation between overpressure and stress sensitivity.Up till now,since only a few Cambrian large-scale carbonate gas reservoirs have ever been developed in the world,there still exists some blind spots especially about its exploration and production rules.Besides,as for large-scale sulfur gas reservoirs,the exploration and construction is costly,and production test in the early evaluation stage is severely limited,all of which will bring about great challenges in productivity construction and high potential risks.In this regard,combining with Chinese strategic demand of strengthening clean energy supply security,the PetroChina Southwest Oil&Gas Field Company has carried out researches and field tests for the purpose of providing highproduction wells,optimizing development design,rapidly constructing high-quality productivity and upgrading HSE security in the Longwangmiao Fm gas reservoir in Moxi block.Through the innovations of technology and management mode within 3 years,this gas reservoir has been built into a modern large-scale gas field with high quality,high efficiency and high benefit,and its annual capacity is now up to over 100×10^(8)m^(3),with a desirable production capacity and development indexes gained as originally anticipated.It has become a new model of large-scale gas reservoirs with efficient development,providing a reference for other types of gas reservoirs in China.展开更多
On the basis of classification of geographical properties a rolling develop-ment goal programming model is formulated in correspondence with the ecopatterngroup in Four-Lake Area. In this model, the control of schisto...On the basis of classification of geographical properties a rolling develop-ment goal programming model is formulated in correspondence with the ecopatterngroup in Four-Lake Area. In this model, the control of schistosomiasis and strengthen-ing of the drainage-storage function are both regarded as ecological measures duringthe process of multi-year(r_0) ecological economic rolling development to make theecoagricultural system in this area ioto a stably operating, ordered, and good cyclicsystem under the support of some controllable factors.展开更多
Taking the formulation of the Daqing Oil. fived five-year development plan as the background, this paper puts forward the concept of dynamic programming with aftereffects and gives the principle of suboptimality as it...Taking the formulation of the Daqing Oil. fived five-year development plan as the background, this paper puts forward the concept of dynamic programming with aftereffects and gives the principle of suboptimality as its approximate solution. By using this principle an oil field development subdynamic programming model has been made and the oil field development program based on this model has achieved obvious economic benefits.展开更多
To investigate the changes of tissue transglutaminase activity, the leaves and young panicles of rice at different developmental stages were excised from the Honglian-type cytoplasmic male sterile line, Yuetai A and i...To investigate the changes of tissue transglutaminase activity, the leaves and young panicles of rice at different developmental stages were excised from the Honglian-type cytoplasmic male sterile line, Yuetai A and its maintainer line, Yuetai B, respectively. An ELISA measurement protocol for tissue transglutaminase activity detection in rice was well established. The results indicated that the tissue transglutaminase activity was regulated positively by calcium cation, and the tissue transglutaminase activity in senescent leaves was remarkably higher than that in young leaves. No distinct difference was noted between Yuetai A and Yuetai B. Moreover, from the tetrad to binucleate stages the tissue transglutaminase activity increased gradually with the progression of the young panicle development and up to maximum at binucleate stage in Yuetai A. However, no similar changes were observed in Yuetai B. This indicates that the tissue transglutaminase is involved in cell programmed death in abortive pollen.展开更多
Background: Although there has been significant reduction in HIV prevalence and new HIV infections in India, some of the low/moderate prevalence states have been showing long term increase in HIV prevalence and new HI...Background: Although there has been significant reduction in HIV prevalence and new HIV infections in India, some of the low/moderate prevalence states have been showing long term increase in HIV prevalence and new HIV infections. Assam, a state in northeast India is one such low HIV prevalence state where HIV prevalence and new HIV infections have almost doubled in the last few years. This study examined the trend of HIV prevalence across districts/regions of Assam and its association with developmental and program indicators. Materials and Methods: A retrospective descriptive analysis of secondary data from the National AIDS Control Program, Census of India-2011, and District Level Household and Facility Survey-3 was conducted. The time period covered under the secondary data analysis was 2007 to 2012. Correlation and Chi-square for trend tests were also used in this paper. Results: During 2007 and 2012, HIV positivity (%) increased relatively in North Assam (46.9%) followed by South Assam (11.5%) while there has been a relative decline in West Assam (﹣51.5%). Correlation analysis showed statistically significant association between HIV prevalence and female literacy, population using mobile phone, population using internet, women (15 - 49 years) seeking treatment for any STI/RTI, proportion of brothel based FSWs, FSWs having <5 clients per week and proportion of condom utilized annually. Conclusion: Program efforts in the state should be focus on the districts with increasing HIV prevalence. Emphasis should be given in planning strategies to address the program gaps among the high risk and vulnerable populations in the state.展开更多
As the exertion development (PUAP) develop in Rejang Lebong Regency in Bengkulu province which had been started since 2008 by giving a kind of fund aid called Bantuan Langsung Masyarakat (BLM PUAP), to Gapoktan (Gabun...As the exertion development (PUAP) develop in Rejang Lebong Regency in Bengkulu province which had been started since 2008 by giving a kind of fund aid called Bantuan Langsung Masyarakat (BLM PUAP), to Gapoktan (Gabungan Kelompok Tani) or an organization of farmers such by giving some money as the capital used for 1) food plant cultiva-tion, horticulture, animal husbandry, plantation, and2) non-cultivation exertion such as;home industry of agriculture, small marketing scale and another agriculture exertion. By the approach which had been done is hoped to get the important result, on the other way the role of analysis factor (Social Network Analysis) from all undertaking stakeholders programs PUAP to be relevance steps aimed to understand the relation or connectivity from all factors in the network and also the role of factor inside the network itself be the relevance steps in arranging the strategy and work intention from the realization stage of PUAP program for the continuity of the realization program in the future (finding the good strategy) which aimed to develop the program of PUAP in Rejang Lebong Regency in Bengkulu Province, and to be a reference from doing the program as a national program in Indonesia.展开更多
The tourism industry is the second largest economic contributor in Malaysia, following the manufacturing sector. In 2008, recorded tourist arrivals reached 22.05 million and resulted in RM49.6 billion （USD13.4 billio...The tourism industry is the second largest economic contributor in Malaysia, following the manufacturing sector. In 2008, recorded tourist arrivals reached 22.05 million and resulted in RM49.6 billion （USD13.4 billion） in revenue. The government has recognized the tourism industry in Malaysia as an engine for economic, social, political and ecological development, especially in rural areas. The Homestay Program is actively promoted by the Ministry of Tourism as a type of community based tourism in Malaysia. It is realized by the government as a catalyst for rural community development, particularly from a socio-economic perspective. The benefits of community based tourism can be further developed through the participation of women, youth and retired people. To realize the potential of the Homestay Program, the Malaysian Rural Tourism Master Plan 2001 was formulated. In the Malaysian Plan （2006-2010）, one of the points of focus by the government is on community development; rural tourism is one of the mechanisms. By June 2009, there had been 3,264 participants in 140 Homestays. Recently, the Ministry of Tourism has given the Homestay Program special emphasis. Under the 9th Malaysia Plan, a total of RM40 million was allocated to the ministry for upgrading infrastructure and facilities in participating villages. Developing the capabilities of local communities is an important component in ensuring the tourism development project benefits them; without supporting the communities in their endeavors, the physical development means nothing to them. If local communities are not equipped to actively participate, third parties could easily manipulate them, resulting in external domination of tourism development. Therefore, this descriptive study explores the motivation of local communities involved in the Homestay Program and the readiness among the local communities, as well as the appropriateness of training provided by government agencies aimed towards empowering local communities. Sixty-two respondents from local communities actively involved in operating the Homestay Program participated in this study. Respondents were from the district of Muar, Johore, Malaysia （Homestay Kg. Parit Bugis, Homestay Kg. Satang Buaya, and Homestay Kg. Melayu Baharu, Bt 28 Lenga）.展开更多
In this paper, we conduct research on the Java multi-thread programming and its further development tendency. Multithreading mechanisms can run several programs at the same time, make the program run effi ciency becom...In this paper, we conduct research on the Java multi-thread programming and its further development tendency. Multithreading mechanisms can run several programs at the same time, make the program run effi ciency becomes higher that also can overcome the problem of basic traditional programming language design while its design is the key to the realization of the synchronous thread. Multithreading is a mechanism that allows concurrent execution of multiple instruction stream in the program, each instruction stream is called a thread, independent from each other between each other. Thread is also known as a lightweight process, it have independent execution and process control. Our research starts from the analysis of the corresponding mechanism to enhance the performance that is innovative and meaningful.展开更多
Although the WEB software development has some difficulty,but as long as the programming skills to find,in the practice ofoperation will find programming fun,this will stimulate the enthusiasm of students programming....Although the WEB software development has some difficulty,but as long as the programming skills to find,in the practice ofoperation will find programming fun,this will stimulate the enthusiasm of students programming.Exploration of interesting skills programmingof WEB software development is aimed at developers who initial contact with WEB software,through the practice of operation to make themget some fun of WEB programming,from simple to difficult gradually let students master WEB programming skills,improve students＇ interestin programming.By adding some special effects of webpages to enhance the students＇ interest in programming,through the key practice ofdatabase,let the students out of fear of programming of database connection.展开更多
The objective of this research was to study the current situation of TV programs aimed at elderly viewers on free TV channels in Thailand. To investigate this topic, a qualitative research approach was applied. The re...The objective of this research was to study the current situation of TV programs aimed at elderly viewers on free TV channels in Thailand. To investigate this topic, a qualitative research approach was applied. The researcher interviewed 30 key informants, consisting of TV administrators, professional experts, academic experts, experts on the elderly, and TV program advertising sponsors. Data were collected using in-depth interviews and analyzed descriptively. This was an interdisciplinary research, drawing from the fields of communication arts, sociology, demography, psychology, management science, and government media policy studies to develop a broad picture of the future of TV programs for the elderly. The major finding was that TV programs aimed specifically at elderly viewers are likely to appear in the near future as Thai society becomes an aging society. The three major factors that will lead to suitable approaches to the development of TV programs for the elderly are： （1） the external factors of the rising numbers of elderly people in the population, CSR （Corporation Social Responsibility） marketing, and government policies; （2） the internal factors of the free TV channels＇ policies and the TV producers＇ policies; and （3） the program-related factors of the value of the elderly in Thai culture, the forms of TV programs for senior viewers, the psychology of the aged, and expansion of target viewer age groups.展开更多
文摘Genetic Programming (GP) is an important approach to deal with complex problem analysis and modeling, and has been applied in a wide range of areas. The development of GP involves various aspects, including design of genetic operators, evolutionary controls and implementations of heuristic strategy, evaluations and other mechanisms. When designing genetic operators, it is necessary to consider the possible limitations of encoding methods of individuals. And when selecting evolutionary control strategies, it is also necessary to balance search efficiency and diversity based on representation characteristics as well as the problem itself. More importantly, all of these matters, among others, have to be implemented through tedious coding work. Therefore, GP development is both complex and time-consuming. To overcome some of these difficulties that hinder the enhancement of GP development efficiency, we explore the feasibility of mutual assistance among GP variants, and then propose a rapid GP prototyping development method based on πGrammatical Evolution (πGE). It is demonstrated through regression analysis experiments that not only is this method beneficial for the GP developers to get rid of some tedious implementations, but also enables them to concentrate on the essence of the referred problem, such as individual representation, decoding means and evaluation. Additionally, it provides new insights into the roles of individual delineations in phenotypes and semantic research of individuals.
文摘Structural development defects essentially refer to code structure that violates object-oriented design principles. They make program maintenance challenging and deteriorate software quality over time. Various detection approaches, ranging from traditional heuristic algorithms to machine learning methods, are used to identify these defects. Ensemble learning methods have strengthened the detection of these defects. However, existing approaches do not simultaneously exploit the capabilities of extracting relevant features from pre-trained models and the performance of neural networks for the classification task. Therefore, our goal has been to design a model that combines a pre-trained model to extract relevant features from code excerpts through transfer learning and a bagging method with a base estimator, a dense neural network, for defect classification. To achieve this, we composed multiple samples of the same size with replacements from the imbalanced dataset MLCQ1. For all the samples, we used the CodeT5-small variant to extract features and trained a bagging method with the neural network Roberta Classification Head to classify defects based on these features. We then compared this model to RandomForest, one of the ensemble methods that yields good results. Our experiments showed that the number of base estimators to use for bagging depends on the defect to be detected. Next, we observed that it was not necessary to use a data balancing technique with our model when the imbalance rate was 23%. Finally, for blob detection, RandomForest had a median MCC value of 0.36 compared to 0.12 for our method. However, our method was predominant in Long Method detection with a median MCC value of 0.53 compared to 0.42 for RandomForest. These results suggest that the performance of ensemble methods in detecting structural development defects is dependent on specific defects.
基金Supported by Social Development Program of Lianyungang Bureau of Science and Technology,Jiangsu Province:RS-based Research on the Eco-environment Evolution of Coastal Regions in Lianyungang(SH0811)~~
文摘Interpretation results of RS images were taken as the foundation, ETM RS images of July 15, 2009 as the data source, ENVI was applied for the preprocessing, Arc GIS used to finish the interpretation, master data obtained, and VB used to complete program development. 12 representative landscape pattern indexes were selected, Excel data used to create Access database, and VB used to complete the program development. Selection of landscape pattern indexes, program development process and program usage were summarized, through comparing its results with Excel calculation results, it was found that calculation results of this program were correct, the usage was convenient, so needs of most users could be satisfied.
文摘The early stage of pollen chamber development in ovule and the cytological mechanism of nucellar cell death were studied in Ginkgo biloba L. DNA ladder appearance and TUNEL assay demonstrated that the nucellar cell death, doomed to bring about pollen chamber formation, was a process of programmed cell death (PCD). A spatial distribution of PCD was visualized during the development of pollen chamber. Together with the observation under the scanning electron microscope, these results have revealed that the early developmental pattern of pollen chamber consists of four phases. Firstly, several layers of the nucellar cells at the micropylar end elongate longitudinally. Thereafter, the uppermost layer of the nucellar cells at the micropylar end initiate PCD; and the nucellar cell death extends in a basally and laterally oriented direction to form a cavity. Finally, the epidermal cells at the micropylar end detach from the other epidermis by dehiscence, bringing about the opening of the pollen chamber. The early development of pollen chamber begins sometime after the stage of megasporocyte and continues by the time of the formation of megaspore tetrad, and finally completes at the stage of development of female gametophyte. This shows a synchronous development of megaspore and pollen chamber.
基金supported by the National Natural Science Foundation of China(30070363)the Foundation for Doctorate Research of Ministry of Education,China(200005041).
文摘Morphological variations of the nucleus in starchy endosperm cell were observed by theelectron-transmisson microscope during endosperm development in rice. Along with thedevelopment of the starchy endosperm, the nuclei of the cells showed chromatin condensation,the typical feature of programmed cell death (PCD). The nuclei also showed nucleusdeformation, disruption of nuclear envelope, nucleoplasm leaking into the cytoplasm andnucleus disintegration resulting in nuclear residue formation. From the nucleus deformationto the nucleus disintegration, the morphological changes of the nucleus were orderlyprogressive. This indicated that the cell death of starchy endosperm in rice wasprogrammed cell death. Evans Blue staining observation showed that the cell death wasinitially detected in the central part of starchy endosperm in rice, then expandedoutward. The activities of superoxide dismutase (SOD) and catalase (CAT) in rice starchyendosperm both descended continuously as development progressed. The analysis of DNA ofrice starchy endosperm did not show the presence of DNA laddering. The above resultsshowed that the cell death of starchy endosperm in rice was a special form of PCD.
文摘Initial teacher preparation and teachers’ continuing professional development are two significant pillars of the teacher education enterprise. The former encompasses a wide range of teachereducation initiatives at the levels of diploma, bachelor’s degree, postgraduate diploma, and even master’s degree for teacher licensure purposes. These are widely documented in the literature.What is important is how teacher professional development contributes to bolstering the teachereducator force, which is relatively insufficiently documented due to the very fact that different educational systems have somewhat different expectations of such programs in relation to the ideologies and theories underpinning the teacher professional development program design and curriculum offering. Taking stock of a postgraduate diploma program in English language teaching(PGDELT) for teachers’ continuing professional development with a 31-year history housed at a premier teacher education institution in Singapore, which has successfully graduated over 1, 000 English language teachers for colleges and universities in China, I intend to highlight some of its key features, as a former student and then a lecturer on the program, in order to draw implications for sustainable growth of language teacher education programs, especially those whose main purposes are to prepare teachers of English as a second or foreign language(ESL/EFL) and provide continuing professional development opportunities for such inservice teachers.
基金supported by the Agriculture and Food Research Initiative Competitive Grants(No.2015-67015-23219 and 2016-68006-24634)from the USDA National Institute of Food and Agriculture.
文摘Over the past few decades,genetic selection and refined nutritional management have extensively been used to increase the growth rate and lean meat production of livestock.However,the rapid growth rates of modern breeds are often accompanied by a reduction in intramuscular fat deposition and increased occurrences of muscle abnor‑malities,impairing meat quality and processing functionality.Early stages of animal development set the long‑term growth trajectory of offspring.However,due to the seasonal reproductive cycles of ruminant livestock,gestational nutrient deficiencies caused by seasonal variations,frequent droughts,and unfavorable geological locations nega‑tively affect fetal development and their subsequent production efficiency and meat quality.Therefore,enrolling live‑stock in nutritional intervention strategies during gestation is effective for improving the body composition and meat quality of the offspring at harvest.These crucial early developmental stages include embryonic,fetal,and postnatal stages,which have stage‑specific effects on subsequent offspring development,body composition,and meat quality.This review summarizes contemporary research in the embryonic,fetal,and neonatal development,and the impacts of maternal nutrition on the early development and programming effects on the long‑term growth performance of livestock.Understanding the developmental and metabolic characteristics of skeletal muscle,adipose,and fibrotic tissues will facilitate the development of stage‑specific nutritional management strategies to optimize production efficiency and meat quality.
文摘Recently, FTTH （fiber to the home） is spreading rapidly, and communication technology has become an indispensable part in our lives. FTTH installers who build the infi＇astructure must correspond to the progress of technology while ensuring a high quality of installation, and it is struggling to its counterpart. The present study is undertaken in order to propose effective vocational ability development program for FTTH installers from the approach of their skill. They are information network cabling-related qualification system and competitions as the ability evaluation system. Then the author concludes that this program makes a contribution to improving their skill and maintaining the quality of the optical fiber network in analyzing some example of actual installation work and the measurement result of the OTDR（optical time domain reflect） meter.
文摘The Lower Cambrian Longwangmiao Fm gas reservoir in Moxi block of the Anyue Gas field,Sichuan Basin,is the largest single-sandbody integrated carbonate gas reservoir proved so far in China.Notwithstanding this reservoir's advantages like large-scale reserves and high singlewell productivity,there are multiple complicated factors restricting its efficient development,such as a median content of hydrogen sulfide,low porosity and strong heterogeneity of fractureecave formation,various modes of gasewater occurrences,and close relation between overpressure and stress sensitivity.Up till now,since only a few Cambrian large-scale carbonate gas reservoirs have ever been developed in the world,there still exists some blind spots especially about its exploration and production rules.Besides,as for large-scale sulfur gas reservoirs,the exploration and construction is costly,and production test in the early evaluation stage is severely limited,all of which will bring about great challenges in productivity construction and high potential risks.In this regard,combining with Chinese strategic demand of strengthening clean energy supply security,the PetroChina Southwest Oil&Gas Field Company has carried out researches and field tests for the purpose of providing highproduction wells,optimizing development design,rapidly constructing high-quality productivity and upgrading HSE security in the Longwangmiao Fm gas reservoir in Moxi block.Through the innovations of technology and management mode within 3 years,this gas reservoir has been built into a modern large-scale gas field with high quality,high efficiency and high benefit,and its annual capacity is now up to over 100×10^(8)m^(3),with a desirable production capacity and development indexes gained as originally anticipated.It has become a new model of large-scale gas reservoirs with efficient development,providing a reference for other types of gas reservoirs in China.
基金The work is supported by National Natural Science Foundation of China,Open Lab.of Management,Decision & Information System,Academia Sinice,and Young Scientist Lab.of Mathematical Physics,Wuhan.
文摘On the basis of classification of geographical properties a rolling develop-ment goal programming model is formulated in correspondence with the ecopatterngroup in Four-Lake Area. In this model, the control of schistosomiasis and strengthen-ing of the drainage-storage function are both regarded as ecological measures duringthe process of multi-year(r_0) ecological economic rolling development to make theecoagricultural system in this area ioto a stably operating, ordered, and good cyclicsystem under the support of some controllable factors.
文摘Taking the formulation of the Daqing Oil. fived five-year development plan as the background, this paper puts forward the concept of dynamic programming with aftereffects and gives the principle of suboptimality as its approximate solution. By using this principle an oil field development subdynamic programming model has been made and the oil field development program based on this model has achieved obvious economic benefits.
文摘To investigate the changes of tissue transglutaminase activity, the leaves and young panicles of rice at different developmental stages were excised from the Honglian-type cytoplasmic male sterile line, Yuetai A and its maintainer line, Yuetai B, respectively. An ELISA measurement protocol for tissue transglutaminase activity detection in rice was well established. The results indicated that the tissue transglutaminase activity was regulated positively by calcium cation, and the tissue transglutaminase activity in senescent leaves was remarkably higher than that in young leaves. No distinct difference was noted between Yuetai A and Yuetai B. Moreover, from the tetrad to binucleate stages the tissue transglutaminase activity increased gradually with the progression of the young panicle development and up to maximum at binucleate stage in Yuetai A. However, no similar changes were observed in Yuetai B. This indicates that the tissue transglutaminase is involved in cell programmed death in abortive pollen.
文摘Background: Although there has been significant reduction in HIV prevalence and new HIV infections in India, some of the low/moderate prevalence states have been showing long term increase in HIV prevalence and new HIV infections. Assam, a state in northeast India is one such low HIV prevalence state where HIV prevalence and new HIV infections have almost doubled in the last few years. This study examined the trend of HIV prevalence across districts/regions of Assam and its association with developmental and program indicators. Materials and Methods: A retrospective descriptive analysis of secondary data from the National AIDS Control Program, Census of India-2011, and District Level Household and Facility Survey-3 was conducted. The time period covered under the secondary data analysis was 2007 to 2012. Correlation and Chi-square for trend tests were also used in this paper. Results: During 2007 and 2012, HIV positivity (%) increased relatively in North Assam (46.9%) followed by South Assam (11.5%) while there has been a relative decline in West Assam (﹣51.5%). Correlation analysis showed statistically significant association between HIV prevalence and female literacy, population using mobile phone, population using internet, women (15 - 49 years) seeking treatment for any STI/RTI, proportion of brothel based FSWs, FSWs having <5 clients per week and proportion of condom utilized annually. Conclusion: Program efforts in the state should be focus on the districts with increasing HIV prevalence. Emphasis should be given in planning strategies to address the program gaps among the high risk and vulnerable populations in the state.
文摘As the exertion development (PUAP) develop in Rejang Lebong Regency in Bengkulu province which had been started since 2008 by giving a kind of fund aid called Bantuan Langsung Masyarakat (BLM PUAP), to Gapoktan (Gabungan Kelompok Tani) or an organization of farmers such by giving some money as the capital used for 1) food plant cultiva-tion, horticulture, animal husbandry, plantation, and2) non-cultivation exertion such as;home industry of agriculture, small marketing scale and another agriculture exertion. By the approach which had been done is hoped to get the important result, on the other way the role of analysis factor (Social Network Analysis) from all undertaking stakeholders programs PUAP to be relevance steps aimed to understand the relation or connectivity from all factors in the network and also the role of factor inside the network itself be the relevance steps in arranging the strategy and work intention from the realization stage of PUAP program for the continuity of the realization program in the future (finding the good strategy) which aimed to develop the program of PUAP in Rejang Lebong Regency in Bengkulu Province, and to be a reference from doing the program as a national program in Indonesia.
文摘The tourism industry is the second largest economic contributor in Malaysia, following the manufacturing sector. In 2008, recorded tourist arrivals reached 22.05 million and resulted in RM49.6 billion （USD13.4 billion） in revenue. The government has recognized the tourism industry in Malaysia as an engine for economic, social, political and ecological development, especially in rural areas. The Homestay Program is actively promoted by the Ministry of Tourism as a type of community based tourism in Malaysia. It is realized by the government as a catalyst for rural community development, particularly from a socio-economic perspective. The benefits of community based tourism can be further developed through the participation of women, youth and retired people. To realize the potential of the Homestay Program, the Malaysian Rural Tourism Master Plan 2001 was formulated. In the Malaysian Plan （2006-2010）, one of the points of focus by the government is on community development; rural tourism is one of the mechanisms. By June 2009, there had been 3,264 participants in 140 Homestays. Recently, the Ministry of Tourism has given the Homestay Program special emphasis. Under the 9th Malaysia Plan, a total of RM40 million was allocated to the ministry for upgrading infrastructure and facilities in participating villages. Developing the capabilities of local communities is an important component in ensuring the tourism development project benefits them; without supporting the communities in their endeavors, the physical development means nothing to them. If local communities are not equipped to actively participate, third parties could easily manipulate them, resulting in external domination of tourism development. Therefore, this descriptive study explores the motivation of local communities involved in the Homestay Program and the readiness among the local communities, as well as the appropriateness of training provided by government agencies aimed towards empowering local communities. Sixty-two respondents from local communities actively involved in operating the Homestay Program participated in this study. Respondents were from the district of Muar, Johore, Malaysia （Homestay Kg. Parit Bugis, Homestay Kg. Satang Buaya, and Homestay Kg. Melayu Baharu, Bt 28 Lenga）.
文摘In this paper, we conduct research on the Java multi-thread programming and its further development tendency. Multithreading mechanisms can run several programs at the same time, make the program run effi ciency becomes higher that also can overcome the problem of basic traditional programming language design while its design is the key to the realization of the synchronous thread. Multithreading is a mechanism that allows concurrent execution of multiple instruction stream in the program, each instruction stream is called a thread, independent from each other between each other. Thread is also known as a lightweight process, it have independent execution and process control. Our research starts from the analysis of the corresponding mechanism to enhance the performance that is innovative and meaningful.
文摘Although the WEB software development has some difficulty,but as long as the programming skills to find,in the practice ofoperation will find programming fun,this will stimulate the enthusiasm of students programming.Exploration of interesting skills programmingof WEB software development is aimed at developers who initial contact with WEB software,through the practice of operation to make themget some fun of WEB programming,from simple to difficult gradually let students master WEB programming skills,improve students＇ interestin programming.By adding some special effects of webpages to enhance the students＇ interest in programming,through the key practice ofdatabase,let the students out of fear of programming of database connection.
文摘The objective of this research was to study the current situation of TV programs aimed at elderly viewers on free TV channels in Thailand. To investigate this topic, a qualitative research approach was applied. The researcher interviewed 30 key informants, consisting of TV administrators, professional experts, academic experts, experts on the elderly, and TV program advertising sponsors. Data were collected using in-depth interviews and analyzed descriptively. This was an interdisciplinary research, drawing from the fields of communication arts, sociology, demography, psychology, management science, and government media policy studies to develop a broad picture of the future of TV programs for the elderly. The major finding was that TV programs aimed specifically at elderly viewers are likely to appear in the near future as Thai society becomes an aging society. The three major factors that will lead to suitable approaches to the development of TV programs for the elderly are： （1） the external factors of the rising numbers of elderly people in the population, CSR （Corporation Social Responsibility） marketing, and government policies; （2） the internal factors of the free TV channels＇ policies and the TV producers＇ policies; and （3） the program-related factors of the value of the elderly in Thai culture, the forms of TV programs for senior viewers, the psychology of the aged, and expansion of target viewer age groups.
