Necessary and sufficient conditions for equalities between a 2 y′(I-P Xx)y and minimum norm quadratic unbiased estimator of variance under the general linear model, where a 2 is a known positive number, are...Necessary and sufficient conditions for equalities between a 2 y′(I-P Xx)y and minimum norm quadratic unbiased estimator of variance under the general linear model, where a 2 is a known positive number, are derived. Further, when the Gauss? Markov estimators and the ordinary least squares estimator are identical, a relative simply equivalent condition is obtained. At last, this condition is applied to an interesting example.展开更多
Using the quantitative error probability density method we studied the S/N ratio of alternately sampled signals digitized by a 4-channel A/D. A complete expression for the S/N ratio of a 4-channel A/D non-uniform samp...Using the quantitative error probability density method we studied the S/N ratio of alternately sampled signals digitized by a 4-channel A/D. A complete expression for the S/N ratio of a 4-channel A/D non-uniform sampling signal was deduced. First we obtained an expression for the S/N ratio of a 1-channel A/D uniform sampling signal when the sampling frequency was equal to or greater than 2 times the frequency of the sampled signal. Based on the S/N ratio of a 2-channel A/D,alternating,non-uniform sampling signal,we analyzed the distribution of quantitative error using the quantitative error probability density method and the distribution convolution formula. From this the S/N ratio expression of a 4-channel A/D sampling signal was deduced. The simulation result shows that the deduced expression is correct.展开更多
In recent years, the incidence of placenta previa has been increasing. According to the literature, it is mainly related to induced labor, artificial abortion, cesarean section, high aging pregnancy, multipara or smok...In recent years, the incidence of placenta previa has been increasing. According to the literature, it is mainly related to induced labor, artificial abortion, cesarean section, high aging pregnancy, multipara or smoking. The placenta previa is the chief cause of bleeding in late pregnancy and threatens the lives of mother and infant, resulting in a high risk problem in obstetrics. This article studies 322 cases of placenta previa from my hospital and Dalian Obstetrics and Gynecological Hospital from January, 2002 to July, 2009, on the basis of clinicretrospective analysis, in order to deepen our understanding and art of treating placenta previa. The study revealed that: 1. With 322 cases of placenta previa, the incidence was 0.73%. It was higher than the incidence 0.3% reported abroad and lower than the incidence 0.94% reported in our country. The data were from sampling survey and did not prove relations between placenta previa and ages, different from the result obtained abroad in which placenta previa had relation with pregnancy ages. The outcome needs further study. But artificial abortion, induced labor, cesarean section and multipara clearly influence the incidence. The study did not analyze the relation between smoking and placenta previa, but there was external data proving that smoking was related to placenta previa; 2. Ultrasound-B is a better method for examination at present; 3. In cases of vaginal childbirth there was a higher incidence of lateral placenta previa and partial placenta previa. The conservative temporization and timely cesarean section can greatly decrease the mortality of mother and infant.展开更多
This contribution analyzes the impact of new International Financial Reporting Standards (IFRS) reporting rules on financial ratios prepared in the Czech companies. Using a sample of 16 Czech firms, we attempt to me...This contribution analyzes the impact of new International Financial Reporting Standards (IFRS) reporting rules on financial ratios prepared in the Czech companies. Using a sample of 16 Czech firms, we attempt to measure the scope and size of the differences in the selected set of financial ratios as calculated with data reported according to the traditional Czech accounting standards (CAS) and under the IFRS provisions. Our study discovers that there are important differences resulting from the two reporting formats. Our research comes to a conclusion that translation of Czech statements to IFRS may cause changes in the values of financial indicators without relationship to the real change in the firms' value, performance, and stability. Even though the findings were not statistically significant, the indicative results of our measurements disclosed an important fact that the transition to IFRS could cause deterioration of key indicators and thereby could impact on the overall rating of companies. One needs to be cautious with generalization due to the small sample size.展开更多
The paper studied the energy poverty in the mountainous areas of Greece through parallel primary surveys, in comparison with the country-level conditions. The surveys are based on objective financial and expenditure d...The paper studied the energy poverty in the mountainous areas of Greece through parallel primary surveys, in comparison with the country-level conditions. The surveys are based on objective financial and expenditure data as well as on subjective views about housing conditions. The objective approach showed that mountainous areas of Greece are burdened with much higher energy expenditure while also having lower annual incomes. Under these circumstances, the energy poverty rate skyrocketed to73.5%. The subjective indicators reveal significant aspects of the problem, such as the intense problem of damp walls and mold growth at home or the restriction of other basic needs in order to cover heating needs. However, despite the proven high vulnerability of Greek mountainous areas, current energy policy actually ignores the special features of mountainous areas, implementing horizontal policies.Therefore, a specialized energy plan targeted to alleviating energy poverty in mountainous areas in Greece is an urgent imperative.展开更多
Tourism has been a fast growing industry in the world in the past decade. However, research that investigates the effectiveness of outdoor ads targeting to tourists has far lagged behind. This study aims to assess the...Tourism has been a fast growing industry in the world in the past decade. However, research that investigates the effectiveness of outdoor ads targeting to tourists has far lagged behind. This study aims to assess the awareness of outdoor ads and to provide insight into effective advertising that target tourists. Pedestrians intercepted in downtown Hong Kong were surveyed using a questionnaire and quota sampling. They were presented with images of seven outdoor advertisements currently displayed in the neighborhood and their recall and impressions of the ads were surveyed. The survey sampled 465 local residents and tourists aged 15 and above. Among the tourists, the awareness of the seven ads ranged from 19 to 49 percent with an average 30 percent. They displayed more positive perceptions of outdoor advertising than the locals, but had lower awareness. Practical suggestions for outdoor advertisers targeting tourists are proposed.展开更多
The paper investigates the contributions of TV Social Programs in UAE channels in promoting the social changes among youths in UAE, and to what extent it effects their attitudes towards the society and its values and ...The paper investigates the contributions of TV Social Programs in UAE channels in promoting the social changes among youths in UAE, and to what extent it effects their attitudes towards the society and its values and traditions. The study used the expecting value model and the third person effect concept in analyzing the perceptions of the UAE's youths towards the practices of local channels. The sample of the study was 200 male and female from several emirates. The study concluded that 88% of the audience in UAE watch the UAE satellite channels. Dubai channel comes in the top most watched channels, followed by Sharjah Channel, then Abu Dhabi channel. Most of the audience watch these channels in their homes. 78% of the audience watch the TV social programs. The most watched program is Khatwa program in Abd Dhabi channels, followed by shabnaa program. The reasons for watching the social programs are: finding relieve from their problems (66%), the diversity of these programs (64%), and the popularity of social programs' anchors (5%). The most discussed issues are Youths problems and unemployment (91%), local problems (73%), divorce issues (31%). They said that these programs encourages for persevering the local heritage (62%), respect the family values (51%), and social traditions (48%). While the most positive features of the social programs are: promote the local anchors (90%), the most negative features are promoting the western values (94%), and discussing some issues which are not fit with the local traditions (88%). In general the study found that the local TV channels played an important role in social changes in UAE.展开更多
Nowadays, preschool education has become the weak part of eduction. Thus, the supply system of preschool education has been heatedly discussed accordingly.This thesis makes some suggestions for the supply system innov...Nowadays, preschool education has become the weak part of eduction. Thus, the supply system of preschool education has been heatedly discussed accordingly.This thesis makes some suggestions for the supply system innovation of preschool education in western areas, based on the sampling surveys in Yibin.展开更多
Differences in level of medical expenditures and compensation ratio of medical expenditure among various subgroups in the older population according to age, gender, education, income and area have important public pol...Differences in level of medical expenditures and compensation ratio of medical expenditure among various subgroups in the older population according to age, gender, education, income and area have important public policy implications. This paper discusses these topics by data based on two waves of social surveys, a baseline in 2000 and a follow-up in 2006 named "The Sample Survey on Aged Population in Urban/Rural China (SSAPUR)". During the six years, the increasing speed of medical expenditure is rapid. The payout of medical expenditure of older people in 2000 was more conservative than that in 2006. Gender and urban-rural differences were also evident with regard to the compensation ratio of medical expenditure; older males and all urban older people had higher compensation ratios than elderly females and the rural older people, respectively. Compensation ratio also increased at age, as well as at education and income levels. Inequalities increased over the six-year period between surveys except when analyzed by area of residence and income levels. A comparison of factors affecting medical expenditure showed that the differences in medical expenditure between 2000 and 2006 had increased, though the influencing factors seemed to have become more reasonable.展开更多
With reference to National Population Census Regulation and Notice of General Office of the State Councilon Conducting 1%Population Sampling Survey 2015,China initiated National1%Population Sampling Survey at zero hou...With reference to National Population Census Regulation and Notice of General Office of the State Councilon Conducting 1%Population Sampling Survey 2015,China initiated National1%Population Sampling Survey at zero hour on November 1,展开更多
In order to explore the relationship between physical exercises and the feeling of shame, 1258 Shanghai middle school students are surveyed with the help of the middle school students' shame measurement scale with th...In order to explore the relationship between physical exercises and the feeling of shame, 1258 Shanghai middle school students are surveyed with the help of the middle school students' shame measurement scale with the combination of delaminating and random sampling. The results of questionnaire show that the feeling of shame is closely related with the scene of physical exercises, the extent students like physical exercises and the intensity they take exercises, which provide methodological support for the remission of the shame of middle school students with physical exercise.展开更多
Intelligence is individual capacity to act appropriate with purpose, think rationally, and adjust with environmental conditions. A successful company is related with the intelligence and ability of its leader to creat...Intelligence is individual capacity to act appropriate with purpose, think rationally, and adjust with environmental conditions. A successful company is related with the intelligence and ability of its leader to create excellent strategies to be a winner in a competition. High competition occurs among cellular operators in Indonesia. The big-five companies in telecommunication industry are PT. Telkomsel Tbk., PT. XL Axiata Tbk., PT. Indosat Tbk., PT. Telkom Tbk., and PT. Bakrie Telecom Tbk.. Intelligence development is a main focus for an individual to be an effective leader in every situation. The purpose of this research is to find out more about leader intelligence in telecommunication industry. This research uses survey and descriptive method. Operational variables consist of intellectual intelligence (X0, emotional intelligence (X2), spiritual intelligence (X3), and adversity intelligence (X4). We use the Likert type as a scale of quetionaire. We use convenience sampling as a sampling technique. Results from data processing show that intellectual intelligence, emotional intelligence, spiritual intelligence, and adversity intelligence of leader in telecommunication industry are included in high category with an average percentage of 77.95%. There is no dominant intelligence that is needed to be a successful leader. The main focus is how leaders can synergize all the intelligence that they have to solve a problem, and they must also realize that changes in the telecommunication industry are very fast, so they must familiarize themselves to uncertain situations.展开更多
In order to ensure the existence of the gender and age differences of middle school students' shame, 1258 Shanghai middle school students are surveyed with the help of the Middle school students' shame measurement s...In order to ensure the existence of the gender and age differences of middle school students' shame, 1258 Shanghai middle school students are surveyed with the help of the Middle school students' shame measurement scale with the combination of delaminating and random sampling. The results of questionnaire show that there are significant gender differences in middle school students' shame and the average scores of male students' shame are higher than those of female students. Besides, there does exist significant age differences in middle school students' shame, but it is not simple linear relationship between the feeling of shame and ages. The feeling of shame reaches maximum at the age of 14 and intervention should be given at this age, which young students feel sensitive most. It is suggested that collective remission of the shame should be offered to middle school students with the methods such as physical exercises, persuasion etc.展开更多
This paper illustrates the language-learning-supporting features of a monolingual English learner's dictionary, the Macmillan English Dictionary for Advanced Learners ( 2002 ) , a product of " a learner-based phil...This paper illustrates the language-learning-supporting features of a monolingual English learner's dictionary, the Macmillan English Dictionary for Advanced Learners ( 2002 ) , a product of " a learner-based philosophy. " It gives a detailed mapping of the user-friendliness of the dictionary in question and points out that MEDAL is helpful to learners of English mainly because it answers both their decoding and encoding needs. To further explore the potential of a good learner's dictionary, the current author also discusses the role of an English teacher in helping his/her students to make better use of the dictionary, and consequently ensures the supportiveness of MEDAL in the language learning process.展开更多
The randomized response (RR) technique is an effective survey method when collecting sensitive information. This paper proposes a new non-randomized response model for survey sampling with polychotomous sensitive qu...The randomized response (RR) technique is an effective survey method when collecting sensitive information. This paper proposes a new non-randomized response model for survey sampling with polychotomous sensitive questions: Two-valued response technique. The proportion of the sensitive attribute and its estimator's variance are estimated under the simple random sampling without replacement and with replacement designs. The relation between the efficiency and the protection of privacy is discussed. The result indicates that the efficiency is in conflict with protection of privacy in the new proposed model, which is the same as that in the RR technique, but the new technique has better characteristics in sociological practice aspects than the RR technique, because it is of low cost, saving time and being operated easily.展开更多
文摘Necessary and sufficient conditions for equalities between a 2 y′(I-P Xx)y and minimum norm quadratic unbiased estimator of variance under the general linear model, where a 2 is a known positive number, are derived. Further, when the Gauss? Markov estimators and the ordinary least squares estimator are identical, a relative simply equivalent condition is obtained. At last, this condition is applied to an interesting example.
基金Projects 07KJZ11 supported by the President Fund of Xuzhou Medical School07KJB310117 by the Education Department of Jiangsu Province
文摘Using the quantitative error probability density method we studied the S/N ratio of alternately sampled signals digitized by a 4-channel A/D. A complete expression for the S/N ratio of a 4-channel A/D non-uniform sampling signal was deduced. First we obtained an expression for the S/N ratio of a 1-channel A/D uniform sampling signal when the sampling frequency was equal to or greater than 2 times the frequency of the sampled signal. Based on the S/N ratio of a 2-channel A/D,alternating,non-uniform sampling signal,we analyzed the distribution of quantitative error using the quantitative error probability density method and the distribution convolution formula. From this the S/N ratio expression of a 4-channel A/D sampling signal was deduced. The simulation result shows that the deduced expression is correct.
文摘In recent years, the incidence of placenta previa has been increasing. According to the literature, it is mainly related to induced labor, artificial abortion, cesarean section, high aging pregnancy, multipara or smoking. The placenta previa is the chief cause of bleeding in late pregnancy and threatens the lives of mother and infant, resulting in a high risk problem in obstetrics. This article studies 322 cases of placenta previa from my hospital and Dalian Obstetrics and Gynecological Hospital from January, 2002 to July, 2009, on the basis of clinicretrospective analysis, in order to deepen our understanding and art of treating placenta previa. The study revealed that: 1. With 322 cases of placenta previa, the incidence was 0.73%. It was higher than the incidence 0.3% reported abroad and lower than the incidence 0.94% reported in our country. The data were from sampling survey and did not prove relations between placenta previa and ages, different from the result obtained abroad in which placenta previa had relation with pregnancy ages. The outcome needs further study. But artificial abortion, induced labor, cesarean section and multipara clearly influence the incidence. The study did not analyze the relation between smoking and placenta previa, but there was external data proving that smoking was related to placenta previa; 2. Ultrasound-B is a better method for examination at present; 3. In cases of vaginal childbirth there was a higher incidence of lateral placenta previa and partial placenta previa. The conservative temporization and timely cesarean section can greatly decrease the mortality of mother and infant.
文摘This contribution analyzes the impact of new International Financial Reporting Standards (IFRS) reporting rules on financial ratios prepared in the Czech companies. Using a sample of 16 Czech firms, we attempt to measure the scope and size of the differences in the selected set of financial ratios as calculated with data reported according to the traditional Czech accounting standards (CAS) and under the IFRS provisions. Our study discovers that there are important differences resulting from the two reporting formats. Our research comes to a conclusion that translation of Czech statements to IFRS may cause changes in the values of financial indicators without relationship to the real change in the firms' value, performance, and stability. Even though the findings were not statistically significant, the indicative results of our measurements disclosed an important fact that the transition to IFRS could cause deterioration of key indicators and thereby could impact on the overall rating of companies. One needs to be cautious with generalization due to the small sample size.
基金Project “Development of multi-parametric, mathematical model for energy planning optimization in mountainous areas AENAOS” (NSRF 2007-2013, Regional Operational Programme of Thessaly - Mainland Greece - Epirus, 2015)
文摘The paper studied the energy poverty in the mountainous areas of Greece through parallel primary surveys, in comparison with the country-level conditions. The surveys are based on objective financial and expenditure data as well as on subjective views about housing conditions. The objective approach showed that mountainous areas of Greece are burdened with much higher energy expenditure while also having lower annual incomes. Under these circumstances, the energy poverty rate skyrocketed to73.5%. The subjective indicators reveal significant aspects of the problem, such as the intense problem of damp walls and mold growth at home or the restriction of other basic needs in order to cover heating needs. However, despite the proven high vulnerability of Greek mountainous areas, current energy policy actually ignores the special features of mountainous areas, implementing horizontal policies.Therefore, a specialized energy plan targeted to alleviating energy poverty in mountainous areas in Greece is an urgent imperative.
文摘Tourism has been a fast growing industry in the world in the past decade. However, research that investigates the effectiveness of outdoor ads targeting to tourists has far lagged behind. This study aims to assess the awareness of outdoor ads and to provide insight into effective advertising that target tourists. Pedestrians intercepted in downtown Hong Kong were surveyed using a questionnaire and quota sampling. They were presented with images of seven outdoor advertisements currently displayed in the neighborhood and their recall and impressions of the ads were surveyed. The survey sampled 465 local residents and tourists aged 15 and above. Among the tourists, the awareness of the seven ads ranged from 19 to 49 percent with an average 30 percent. They displayed more positive perceptions of outdoor advertising than the locals, but had lower awareness. Practical suggestions for outdoor advertisers targeting tourists are proposed.
文摘The paper investigates the contributions of TV Social Programs in UAE channels in promoting the social changes among youths in UAE, and to what extent it effects their attitudes towards the society and its values and traditions. The study used the expecting value model and the third person effect concept in analyzing the perceptions of the UAE's youths towards the practices of local channels. The sample of the study was 200 male and female from several emirates. The study concluded that 88% of the audience in UAE watch the UAE satellite channels. Dubai channel comes in the top most watched channels, followed by Sharjah Channel, then Abu Dhabi channel. Most of the audience watch these channels in their homes. 78% of the audience watch the TV social programs. The most watched program is Khatwa program in Abd Dhabi channels, followed by shabnaa program. The reasons for watching the social programs are: finding relieve from their problems (66%), the diversity of these programs (64%), and the popularity of social programs' anchors (5%). The most discussed issues are Youths problems and unemployment (91%), local problems (73%), divorce issues (31%). They said that these programs encourages for persevering the local heritage (62%), respect the family values (51%), and social traditions (48%). While the most positive features of the social programs are: promote the local anchors (90%), the most negative features are promoting the western values (94%), and discussing some issues which are not fit with the local traditions (88%). In general the study found that the local TV channels played an important role in social changes in UAE.
文摘Nowadays, preschool education has become the weak part of eduction. Thus, the supply system of preschool education has been heatedly discussed accordingly.This thesis makes some suggestions for the supply system innovation of preschool education in western areas, based on the sampling surveys in Yibin.
文摘Differences in level of medical expenditures and compensation ratio of medical expenditure among various subgroups in the older population according to age, gender, education, income and area have important public policy implications. This paper discusses these topics by data based on two waves of social surveys, a baseline in 2000 and a follow-up in 2006 named "The Sample Survey on Aged Population in Urban/Rural China (SSAPUR)". During the six years, the increasing speed of medical expenditure is rapid. The payout of medical expenditure of older people in 2000 was more conservative than that in 2006. Gender and urban-rural differences were also evident with regard to the compensation ratio of medical expenditure; older males and all urban older people had higher compensation ratios than elderly females and the rural older people, respectively. Compensation ratio also increased at age, as well as at education and income levels. Inequalities increased over the six-year period between surveys except when analyzed by area of residence and income levels. A comparison of factors affecting medical expenditure showed that the differences in medical expenditure between 2000 and 2006 had increased, though the influencing factors seemed to have become more reasonable.
文摘With reference to National Population Census Regulation and Notice of General Office of the State Councilon Conducting 1%Population Sampling Survey 2015,China initiated National1%Population Sampling Survey at zero hour on November 1,
文摘In order to explore the relationship between physical exercises and the feeling of shame, 1258 Shanghai middle school students are surveyed with the help of the middle school students' shame measurement scale with the combination of delaminating and random sampling. The results of questionnaire show that the feeling of shame is closely related with the scene of physical exercises, the extent students like physical exercises and the intensity they take exercises, which provide methodological support for the remission of the shame of middle school students with physical exercise.
文摘Intelligence is individual capacity to act appropriate with purpose, think rationally, and adjust with environmental conditions. A successful company is related with the intelligence and ability of its leader to create excellent strategies to be a winner in a competition. High competition occurs among cellular operators in Indonesia. The big-five companies in telecommunication industry are PT. Telkomsel Tbk., PT. XL Axiata Tbk., PT. Indosat Tbk., PT. Telkom Tbk., and PT. Bakrie Telecom Tbk.. Intelligence development is a main focus for an individual to be an effective leader in every situation. The purpose of this research is to find out more about leader intelligence in telecommunication industry. This research uses survey and descriptive method. Operational variables consist of intellectual intelligence (X0, emotional intelligence (X2), spiritual intelligence (X3), and adversity intelligence (X4). We use the Likert type as a scale of quetionaire. We use convenience sampling as a sampling technique. Results from data processing show that intellectual intelligence, emotional intelligence, spiritual intelligence, and adversity intelligence of leader in telecommunication industry are included in high category with an average percentage of 77.95%. There is no dominant intelligence that is needed to be a successful leader. The main focus is how leaders can synergize all the intelligence that they have to solve a problem, and they must also realize that changes in the telecommunication industry are very fast, so they must familiarize themselves to uncertain situations.
文摘In order to ensure the existence of the gender and age differences of middle school students' shame, 1258 Shanghai middle school students are surveyed with the help of the Middle school students' shame measurement scale with the combination of delaminating and random sampling. The results of questionnaire show that there are significant gender differences in middle school students' shame and the average scores of male students' shame are higher than those of female students. Besides, there does exist significant age differences in middle school students' shame, but it is not simple linear relationship between the feeling of shame and ages. The feeling of shame reaches maximum at the age of 14 and intervention should be given at this age, which young students feel sensitive most. It is suggested that collective remission of the shame should be offered to middle school students with the methods such as physical exercises, persuasion etc.
文摘This paper illustrates the language-learning-supporting features of a monolingual English learner's dictionary, the Macmillan English Dictionary for Advanced Learners ( 2002 ) , a product of " a learner-based philosophy. " It gives a detailed mapping of the user-friendliness of the dictionary in question and points out that MEDAL is helpful to learners of English mainly because it answers both their decoding and encoding needs. To further explore the potential of a good learner's dictionary, the current author also discusses the role of an English teacher in helping his/her students to make better use of the dictionary, and consequently ensures the supportiveness of MEDAL in the language learning process.
基金This research is supported by the National Natural Science Foundation of China under Grant No. 10761004, the Natural Science Foundation of Inner Mongolia under Grant Nos. 2009MS0107 and 2010MS01116, the Talent Development Foundation of Inner Mongolia (2007), and the Natural Science Foundation of Inner Mongolia University of Technology under Grant No. X200934.
文摘The randomized response (RR) technique is an effective survey method when collecting sensitive information. This paper proposes a new non-randomized response model for survey sampling with polychotomous sensitive questions: Two-valued response technique. The proportion of the sensitive attribute and its estimator's variance are estimated under the simple random sampling without replacement and with replacement designs. The relation between the efficiency and the protection of privacy is discussed. The result indicates that the efficiency is in conflict with protection of privacy in the new proposed model, which is the same as that in the RR technique, but the new technique has better characteristics in sociological practice aspects than the RR technique, because it is of low cost, saving time and being operated easily.