Nowadays, the computer is increasingly popular, and college examination is developing in the direction of traditional examination means to automation and intelligence ones gradually, all these make it inevitable to co...Nowadays, the computer is increasingly popular, and college examination is developing in the direction of traditional examination means to automation and intelligence ones gradually, all these make it inevitable to construct question bank for courses, and to generate test paper using computers. This paper uses the Delphi technique, to make improvements to existing components, combining with VBA programming, and use of SQL Server to implement the question bank management and test paper auto-generation system, which could generate test paper in Word Document. A large number of tests show that the software is running stably and system features are functioning correctly on Windows 2000/XP/2003 platform with Office XP/2003 environment.展开更多
The scores of grape wine given by wine critics have differences, therefore, for which its credibility differs. Firstly, our paper analysis differences of overall and individual for the two groups of raters. The analys...The scores of grape wine given by wine critics have differences, therefore, for which its credibility differs. Firstly, our paper analysis differences of overall and individual for the two groups of raters. The analysis method is： first check the score whether meets the normal distribution or not by Chi-square and then test whether the mean of the two group＇s ratings is equal or not, through t-test, to illustrate the differences of the two groups＇ ratings. Secondly this paper respectively characterizes the credibility of each group＇s rating with the variance and gray correlation. Both the results are highly consistent on the credibility, so they can support each other. This score comparison method can be further extended to a similar scoring system.展开更多
This study sought to assess Gweru＇s water supply system from the source to the consumer to find out whether the water is safe for domestic purposes, mainly consumption. Water samples were taken from Gwenoro dam （raw...This study sought to assess Gweru＇s water supply system from the source to the consumer to find out whether the water is safe for domestic purposes, mainly consumption. Water samples were taken from Gwenoro dam （raw water）, Gwenoro treatment plant （treated water） as well as from GIS-generated random points of residential areas closest to Gwenoro and furthest from both the dam and the treatment plant. These were taken for laboratory testing where parameters like pH, hardness, turbidity and DO （dissolved oxygen） were tested. Questionnaires were used to solicit the views of the consumers on water quality and water service delivery from eight randomly selected residential suburbs. Interviews were also administered to Gwenoro Water Treatment Plant superintendent and deputy to get insight into the day to day challenges that they have to grapple with. Results generally show that treated water from Gwenoro treatment plant is relatively safe to drink for those who have access to it. However, some consumer points like Mkoba 13 and Mkoba 18 receive water whose DO is out of the recommended range. Suburbs which lie on higher ground like Mkoba 19 and Mkoba 14 however rarely receive water from Gwenoro with some residents of Mkoba 19 having had no water from their taps for more than three years now. The study recommends that new equipment be bought for the treatment plant so that treated water reaches all parts of the city. Newly resettled farmers in the Upper Runde Catchment must be resettled elsewhere while urban stream bank cultivation must be banned to reduce water pollution as well as possible sedimentation of Gwenoro dam.展开更多
This study sought to establish the compatibility effects of biochar/vermin-compost application on growth and yield of maize and cabbages. Biochar application rate was at 3 to 4% of soil weight. Biochar was mixed in va...This study sought to establish the compatibility effects of biochar/vermin-compost application on growth and yield of maize and cabbages. Biochar application rate was at 3 to 4% of soil weight. Biochar was mixed in various proportions to come up with treatments which were 100% vermicompost, 50/50% biochar： vermicompost, 75/25% biochar： vermicompost and 100% biochar. The experiment was repeated twice and arranged as a completely randomized design and replicated five times. The study established that maize yield increased with application of biochar from 25% to 50%. In the cabbage trial, comparable results in plant height, leaf numbers and final yield was obtained with 100% vermicompost application, 50% and 75% biochar inclusion. When biochar was applied at 100%, noticeable reduction in plant performance was noted. It is recommended to use biochar as a bio-fertiliser at 50/50% biochar： vermicompost in maize and cabbage production.展开更多
This study aims to investigate teaching programming concepts to K-12 teachers with Scratch. A total of 10 K-12 teachers enrolled in one graduate course participated in this study. They received lectures, took practice...This study aims to investigate teaching programming concepts to K-12 teachers with Scratch. A total of 10 K-12 teachers enrolled in one graduate course participated in this study. They received lectures, took practices and exercises of Scratch programming and were then asked to design and implement their projects before the semester. It was found that teaching programming concepts to K-12 teachers with Scratch is feasible. K-12 teachers with less computer background can learned basic programming concepts and applied them in their project code implementation. Although no significant difference was found between participants＇ pre-test and post-test on programming self-efficacy, positive attitudes toward learning Scratch programming was revealed in the questionnaire survey and results of interviews. This study paves a way for referring to the teaching of programming concepts for K- 12 teachers.展开更多
Needs analysis is considered a necessary first step in designing ESP courses. This study, therefore, aims at analysing students at the Faculty of Public and Environmental Health （PEH） at the University of Khartoum ...Needs analysis is considered a necessary first step in designing ESP courses. This study, therefore, aims at analysing students at the Faculty of Public and Environmental Health （PEH） at the University of Khartoum （U of K）, Sudan, needs for English language. The study adopted the needs analysis framework suggested by Dudley-Evans and St John （1998） focusing on target needs analysis, present situation analysis, and learning means needs analysis. The study used a questionnaire, a proficiency test, and an interview to collect data. The participants were 490 students at PEH （390 participated in the questionnaire and 100 in the proficiency test） and two professors at the Faculty. The study found that PEH students need English language for academic study. The students rated their proficiency as good, but the test revealed that they were of weak proficiency. All the four skills in addition to vocabulary, grammar, and pronunciation are regarded as important to the students. Similarly, almost all the sub-skills are found to be important. The students have a variety of leaming needs such as learning in pairs, groups, and through ICT. The study recommends that PEH students＇ proficiency should be raised and a course that meets the students＇ needs is needed.展开更多
Background and aims:Due to the invasiveness of upper gastrointestinal endoscopy,non-invasive diagnostic tests for varices in liver cirrhosis have been widely established by numerous studies.A questionnaire survey,whic...Background and aims:Due to the invasiveness of upper gastrointestinal endoscopy,non-invasive diagnostic tests for varices in liver cirrhosis have been widely established by numerous studies.A questionnaire survey,which was aimed at understanding the current knowledge about non-invasive diagnostic tests for varices in liver cirrhosis,was distributed among the members of Gastroenterology Branch of the Liaoning Medical Association.Methods:A questionnaire assessing the knowledge about non-invasive diagnostic tests for varices was sent to 42 members who participated in the entire ninth committee.They were from 33 hospitals in 13 cities of Liaoning Province,China.Results:Overall,97.6%(41/42)of participants responded to the questionnaire.A majority of participants were chief physicians(85.4%),had>20 years of experience in clinical work of digestive diseases(80.5%)and worked at tertiary hospitals(97.6%).In 46.3%of participants’departments,there were>200 patients with liver cirrhosis and gastroesophageal varices admitted every year.In 90.2%of participants’departments,upper gastrointestinal endoscopy was regularly employed for the diagnosis of gastroesophageal varices.Only six(15%)participants often used non-invasive diagnostic tests for varices in clinical practice.Thirty(75%)participants knew at least one non-invasive diagnostic test for varices.The knowledge of at least one non-invasive diagnostic test was significantly associated with the number of cirrhotic patients with varices(P¼0.038)or the regular use of gastrointestinal endoscopy to diagnose varices(P¼0.022).Conclusions:This questionnaire survey suggested that non-invasive diagnostic tests for varices in liver cirrhosis were rarely or never used in clinical practices in Liaoning Province,China.Reliable,non-invasive indexes should be further explored in a well-designed multi-center observational study.展开更多
With the aim of investigating the longitudinal washback of the innovated College English Test （CET） on College English （CE） classroom teaching and learning and ascertaining what changes the test innovation has bro...With the aim of investigating the longitudinal washback of the innovated College English Test （CET） on College English （CE） classroom teaching and learning and ascertaining what changes the test innovation has brought to CE in China, this study compares CE classes of a university in 2003 with those in 2009 through classroom observations, supplemented with interviews and questionnaire survey. The results indicate that the CE teaching model remains nearly the same before and after the CET innovation, but obvious changes are observed in terms of semester teaching plans, teaching content and teaching methods. It seems that the CET innovation is one of the main factors contributing to these changes, which, however, may also be attributed to other factors such as The College English Requirement, curriculum design, the use of CET results, teachers＇ individual differences, and students＇ English proficiency.展开更多
文摘Nowadays, the computer is increasingly popular, and college examination is developing in the direction of traditional examination means to automation and intelligence ones gradually, all these make it inevitable to construct question bank for courses, and to generate test paper using computers. This paper uses the Delphi technique, to make improvements to existing components, combining with VBA programming, and use of SQL Server to implement the question bank management and test paper auto-generation system, which could generate test paper in Word Document. A large number of tests show that the software is running stably and system features are functioning correctly on Windows 2000/XP/2003 platform with Office XP/2003 environment.
文摘The scores of grape wine given by wine critics have differences, therefore, for which its credibility differs. Firstly, our paper analysis differences of overall and individual for the two groups of raters. The analysis method is： first check the score whether meets the normal distribution or not by Chi-square and then test whether the mean of the two group＇s ratings is equal or not, through t-test, to illustrate the differences of the two groups＇ ratings. Secondly this paper respectively characterizes the credibility of each group＇s rating with the variance and gray correlation. Both the results are highly consistent on the credibility, so they can support each other. This score comparison method can be further extended to a similar scoring system.
文摘This study sought to assess Gweru＇s water supply system from the source to the consumer to find out whether the water is safe for domestic purposes, mainly consumption. Water samples were taken from Gwenoro dam （raw water）, Gwenoro treatment plant （treated water） as well as from GIS-generated random points of residential areas closest to Gwenoro and furthest from both the dam and the treatment plant. These were taken for laboratory testing where parameters like pH, hardness, turbidity and DO （dissolved oxygen） were tested. Questionnaires were used to solicit the views of the consumers on water quality and water service delivery from eight randomly selected residential suburbs. Interviews were also administered to Gwenoro Water Treatment Plant superintendent and deputy to get insight into the day to day challenges that they have to grapple with. Results generally show that treated water from Gwenoro treatment plant is relatively safe to drink for those who have access to it. However, some consumer points like Mkoba 13 and Mkoba 18 receive water whose DO is out of the recommended range. Suburbs which lie on higher ground like Mkoba 19 and Mkoba 14 however rarely receive water from Gwenoro with some residents of Mkoba 19 having had no water from their taps for more than three years now. The study recommends that new equipment be bought for the treatment plant so that treated water reaches all parts of the city. Newly resettled farmers in the Upper Runde Catchment must be resettled elsewhere while urban stream bank cultivation must be banned to reduce water pollution as well as possible sedimentation of Gwenoro dam.
文摘This study sought to establish the compatibility effects of biochar/vermin-compost application on growth and yield of maize and cabbages. Biochar application rate was at 3 to 4% of soil weight. Biochar was mixed in various proportions to come up with treatments which were 100% vermicompost, 50/50% biochar： vermicompost, 75/25% biochar： vermicompost and 100% biochar. The experiment was repeated twice and arranged as a completely randomized design and replicated five times. The study established that maize yield increased with application of biochar from 25% to 50%. In the cabbage trial, comparable results in plant height, leaf numbers and final yield was obtained with 100% vermicompost application, 50% and 75% biochar inclusion. When biochar was applied at 100%, noticeable reduction in plant performance was noted. It is recommended to use biochar as a bio-fertiliser at 50/50% biochar： vermicompost in maize and cabbage production.
文摘This study aims to investigate teaching programming concepts to K-12 teachers with Scratch. A total of 10 K-12 teachers enrolled in one graduate course participated in this study. They received lectures, took practices and exercises of Scratch programming and were then asked to design and implement their projects before the semester. It was found that teaching programming concepts to K-12 teachers with Scratch is feasible. K-12 teachers with less computer background can learned basic programming concepts and applied them in their project code implementation. Although no significant difference was found between participants＇ pre-test and post-test on programming self-efficacy, positive attitudes toward learning Scratch programming was revealed in the questionnaire survey and results of interviews. This study paves a way for referring to the teaching of programming concepts for K- 12 teachers.
文摘Needs analysis is considered a necessary first step in designing ESP courses. This study, therefore, aims at analysing students at the Faculty of Public and Environmental Health （PEH） at the University of Khartoum （U of K）, Sudan, needs for English language. The study adopted the needs analysis framework suggested by Dudley-Evans and St John （1998） focusing on target needs analysis, present situation analysis, and learning means needs analysis. The study used a questionnaire, a proficiency test, and an interview to collect data. The participants were 490 students at PEH （390 participated in the questionnaire and 100 in the proficiency test） and two professors at the Faculty. The study found that PEH students need English language for academic study. The students rated their proficiency as good, but the test revealed that they were of weak proficiency. All the four skills in addition to vocabulary, grammar, and pronunciation are regarded as important to the students. Similarly, almost all the sub-skills are found to be important. The students have a variety of leaming needs such as learning in pairs, groups, and through ICT. The study recommends that PEH students＇ proficiency should be raised and a course that meets the students＇ needs is needed.
文摘Background and aims:Due to the invasiveness of upper gastrointestinal endoscopy,non-invasive diagnostic tests for varices in liver cirrhosis have been widely established by numerous studies.A questionnaire survey,which was aimed at understanding the current knowledge about non-invasive diagnostic tests for varices in liver cirrhosis,was distributed among the members of Gastroenterology Branch of the Liaoning Medical Association.Methods:A questionnaire assessing the knowledge about non-invasive diagnostic tests for varices was sent to 42 members who participated in the entire ninth committee.They were from 33 hospitals in 13 cities of Liaoning Province,China.Results:Overall,97.6%(41/42)of participants responded to the questionnaire.A majority of participants were chief physicians(85.4%),had>20 years of experience in clinical work of digestive diseases(80.5%)and worked at tertiary hospitals(97.6%).In 46.3%of participants’departments,there were>200 patients with liver cirrhosis and gastroesophageal varices admitted every year.In 90.2%of participants’departments,upper gastrointestinal endoscopy was regularly employed for the diagnosis of gastroesophageal varices.Only six(15%)participants often used non-invasive diagnostic tests for varices in clinical practice.Thirty(75%)participants knew at least one non-invasive diagnostic test for varices.The knowledge of at least one non-invasive diagnostic test was significantly associated with the number of cirrhotic patients with varices(P¼0.038)or the regular use of gastrointestinal endoscopy to diagnose varices(P¼0.022).Conclusions:This questionnaire survey suggested that non-invasive diagnostic tests for varices in liver cirrhosis were rarely or never used in clinical practices in Liaoning Province,China.Reliable,non-invasive indexes should be further explored in a well-designed multi-center observational study.
基金part of the achievements funded by the Fundamental Research Funds for the Central Universities in China(No.0205005201030)the National Scholarship Council of China(No.2010850066) granted to the second author to support a one-year visiting professorship and period of collaboration with University of Cambridge ESOL Examinations from October 2011 to September 2012
文摘With the aim of investigating the longitudinal washback of the innovated College English Test （CET） on College English （CE） classroom teaching and learning and ascertaining what changes the test innovation has brought to CE in China, this study compares CE classes of a university in 2003 with those in 2009 through classroom observations, supplemented with interviews and questionnaire survey. The results indicate that the CE teaching model remains nearly the same before and after the CET innovation, but obvious changes are observed in terms of semester teaching plans, teaching content and teaching methods. It seems that the CET innovation is one of the main factors contributing to these changes, which, however, may also be attributed to other factors such as The College English Requirement, curriculum design, the use of CET results, teachers＇ individual differences, and students＇ English proficiency.
