Extraction of fetal ECG signal from abdominal and thoracic ECG signal using periodic component analysis
In this paper, Periodic Component Analysis is used to extract the fetal electrocardiogram (ECG) from the abdominal and thoracic maternal electrocardiogram. The thoracic ECG (TECG) is assumed to be almost completely maternal while the abdominal ECG (AECG) is considered to be composite as it contains both the maternal and fetal ECG signals. Three channels of signal, from chest leads and five from abdominal leads from DaISy data set are used . Extracted signals consist of mixture of components including maternal ECG, fetal ECG and random noise. Periodic Component Analysis (?CA) is used to isolate the fetal ECG from maternal ECG signal. Generalized Eigen Value Decomposition is used to decompose the ECG record. It uses phase-wrapping of the R-R interval, for extracting the most periodic linear mixtures of a recorded dataset. Comparison with Independent Component Analysis (ICA) demonstrates the quality of this method. This method is therefore of special interest for the decomposition of ECG and the extraction fetal ECG from maternal ECG signal. The average sensitivity and accuracy of this method is 99.04% and 94.56% respectively. By using one thoracic signal and three abdominal signals this method is able to achieve 100% sensitivity and accuracy.
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Factors that affect learning Business English Skills: A Survey on the performance of Post Graduate students in Business Studies
Having realized that the students at post graduate level need to have language skills to communicate effectively in professional context, the present paper has attempted to identify the communicative capabilities of Business students by conducting a survey on their business English knowledge level. The study used a well-defined questionnaire containing questions related to business letters, reports, memos, emails, minutes of meetings, telephonic conversation and presentations, testing the communicative competency of the respondents. The test was conducted to assess the language skills of the students after they finished a specific course in Business English. Students performance was evaluated and presented through a graph. The assessment outcome manily focusing on the factors that affect the learning of business English is discussed.
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High- Resolution data for Land Use Land Cover Assessment in Salem Taluk, Salem District, South India
The present land use land cover investigation made by using Recent and High resolution data IRS-Resource sat 2, L4FX. In this study proposes a 2014 land use land cover assessment of the study area. Based on land use land cover classification, the study area contains a seven type of classes. The Seven classes are Deciduous Forests, Build up/Mine area, Agriculture/ crop land areas, Evergreen and Semi evergreen forests, Cultivation and Plantation, Barren Land and Water bodies are occupying areas of 27%,18%,18%, 16%,15%, 6%, 0.4% respectively. Classified image was carried into accuracy assessment. The accuracy assessment gives a result of overall accuracy - 90%, Kappa Accuracy - 88%, Producer Accuracy - 90% and User Accuracy - 91%.
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ICTs in the Field of Education in Bangladesh: some salient features
The education system of Bangladesh is broadly divided into three stages. These are primary, secondary and higher education. To meet up the demand of education of the country, the government has the highest responsibility. The government of Bangladesh is trying to play her role since its inception. Doing her duty, many methods and techniques of providing education have been using. In the modern age of 21st century, Information Communication Technology (ICT) is one of the latest techniques around the world including Bangladesh to use in the field of education. It is said that the present time is the blessing of ICT. All the sectors of a country like, education, health, agriculture, business, travel, transport, industry etc. can’t work properly with expected outputs without use of technology. Many applications are now being used in all those sectors. Bangladesh is also on the track to utilize the application of ICTs. As a matter of it, Bangladesh has established an ICT policy in 2009, to implement and engage ICTs for some definite purposes. In education sector of Bangladesh, ICTs have been using for many purposes. Computer and internet based technologies have been using in a scattered and limited way for e-learning & distance learning such as in storage of data, video documentary production etc. But the prospects of ICTs in education sector comprising primary, secondary and higher level are multidimensional. Establishing e-learning or online education system, adopting modern educational management, ensuring equal opportunity of education, increasing global connectivity among the educational institutions, providing education for distanced and distressed people etc. could be able to achieve with the help of ICTs. Bangladesh is far behind in the field compared to other countries in the world. Some problems are also identified in this regard. These are lack of computers and lab facility with internet connectivity, inadequate infrastructure, lack of fund and comprehensive policy etc. which hinders to get the maximum benefits from ICTs in education sector. If all these hinders would quickly be minimized, the education system of Bangladesh, especially the secondary and higher stage could be able to produce its outcomes quickly and the government would be able to manage all the education sectors very effectively and efficiently. The present article deals with all these factors and important issues in detail with due attention.
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In-service trainee teachers’ Reflective Perspectives of Teaching Practicum Issues, challenges and new frontiers
This paper explores the findings of a qualitative phenomenological study of teaching practicum as a critical component of teacher training program at a leading private University in Kenya. This phenomenological study evaluated the teachers prevailing understandings of the teaching practice phenomenon (Borg and Gall, 2007). It focuses on exploring the issues and concerns related to the planning, teacher placement, implementation and administration of teaching practicum. It addresses the teacher trainees’ experiences, challenges, pedagogic and philosophical concerns during the teaching practicum. The participants in the study were selected using purposive sampling techniques. These were teachers who had completed the mandatory course requirements in a private university and were taking the final units in readiness for the final examination before graduation. The participants took their teaching practicum in their teaching duty stations, under the mentorship of a cooperating teacher and were supervised by two faculty members during the first term of the school calendar. The research design used a phenomenological interpretive methodology that gave prominence to the participants’ subjective meanings (Cohen and Manion, 2000). The participants in the study were 78 teachers who took part in the teaching practicum in the last phase of their teacher training program. Data were collected from professional journals, reflective papers and portfolios prepared by the teachers during and after the teaching practicum. Analysis of data was done by coding the teachers’ experiences into broad themes. Following the emerging perspectives and challenges during the practicum, suggestions are made to improve aspects of planning and pedagogy the teaching practicum.
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Information Needs and Dissemination of National Centre for Technology Management (Nacetem), Obafemi Awolowo University, Ile-Ife, Nigeria
This study assessed information needs and dissemination of the National Centre for Technology Management (NACETEM), Obafemi Awolowo University, Ile-Ife, Nigeria. The study focused on the adequacy of existing holdings in the research institute determines the recency of materials in the library and evaluate the environmental condition of the library. The study was a descriptive survey which involved the design of questionnaire that was administered to staff and library clientele. The findings revealed that the highest percentage of the library clientele were researchers 45.8%, followed by the administrative and accounts staff 45.9% and planning officers accounted for 8.3% being the least among the library users. Also, majority 61% agreed that the materials were adequate. The study further showed that majority 64% of the materials were relatively recent. The study further revealed that 33.3% of the respondents described the environment as conducive for reading and learning. This study concluded that the agency is living up to its mandate as an institution for science, technology and innovation management (STI). However, the information needs of the agency needs to be explored to assist the management to provide current materials for the use of the staff and other users.
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Interband absorption coefficients in a strained Zn0.2Cd0.8S/ZnS quantum dot
Interband optical absorption coefficients in a strained Zn0.2Cd0.8S/ZnS quantum dot are discussed theoretically taking into account the internal field induced by the spontaneous and piezoelectric polarizations. The effects of geometrical quantum confinement on the exciton binding energies in ZnxCd1-xS/ZnS quantum dot are investigated for various confinement potentials and thereby the interband optical transition energy associated with the photon is brought out. The effects of quantum confinement on the heavy hole exciton are brought out here. We calculate the oscillator strengths for the heavy hole and light hole excitons and the total nonlinear optical absorption coefficients in a Zn0.2Cd0.8S /ZnS quantum dot with the incident photon energy taking into account the effective mass anisotropy of holes. Our results bring out that the oscillator strength depends on the geometrical confinement, electron and hole wave functions and the interaction between them, and the nonlinear optical absorption coefficient shows larger values for smaller dots.
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Internal Auditing and Financial Performance of Tehran Stock Exchange listed companies
The purpose of this paper is to assess the internal auditing practices on the financial performance of Tehran Stock Exchangelisted companies and to consider the effect of a contextual factor-Political influence on this relationship. While much empirical works have given diverse reasons for the poor financial performance of TSEs, research evidence of the impact of internal auditing practices on the financial performance of TSEs in the Iran context is scanty.The study found no strong associationbetween internal auditing practices and financial performanceof TSEs and those political influences do not significantlyimpact this relationship. The weak association betweeninternal auditing practice sand financial performances isattributed to these enterprises’ inadequacy and poorimplementation of internal auditing practices. Where internalauditing is de-emphasized it cannot impact positivelyonperformance.
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Investigating Motivation of Medical Tourism in Iran
Medical Tourism forms a significant proportion of less developed countries’ income. With regard to Iran’s attractiveness for tourists and big advantages of developing this industry in the country and lack of researches in this field, identification of motivations of medical tourists for choosing Iran, can significantly improve this burgeoning industry. Statistical population of this research is foreign medical tourists which have traveled to Iran for medical treatments. The data is gathered through distributing 56 questionnaires consist of 38 questions between medical tourists which were chosen by the method of convenience sampling. For testing the conceptual model multi linear regression has been applied. Results showed that while treatment cost, waiting time, treatment options, medical facilities and sociological factors are significantly and positively influential on medical tourists’ motivation, service quality, political conditions and tourist attractions has not any significant influence on medical tourists’ motivation. Therefore, we suggest concentrating the investment on the first 5 above mentioned factors in marketing plans and considering prevention of bad effects of the other factors.
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Location preferences of retail Uses in Lagos metropolis, Nigeria
The transactions within the retail sector often require face-to-face interactions between buyers and sellers. In most cases, consumption and production of retail services take place in very close proximity. This paper aimed at determining the location preference of shop/ retail uses in urban areas in Lagos State, Nigeria. In other to achieve this, the following research questions are raised (1) what are the location preferences for a prospective shop owner? (2)What are the factors affecting the decision of a retailer to locate his/her shop (3) what are the available facilities within the shops. The findings revealed that apart from accessibility which serves as the base/preference for location of any land uses, the type of goods sold is the most important factor when it comes to location preferences for shops / retail outlets. Proximity to manufacturer was ranked last on the list. It is concluded that proximity to manufacturers factory is not a serious determinant in sitting shops which show that where the goods is produced is not the concern of the shopper.
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