LARGE DATA EMBEDDING; PROBLEM & SOLUTION

The objective of the study was to propose a high capacity data embedding system from DCT domain. The default quantization table is used for fixed mask projection quantization steps. Accordingly, DCT coefficient of the host image from low to higher frequency bands and embed bits from band to band with specially designed base vectors called Hadamard vectors. The embedding scheme procedure is described step wise. The proposed system can be used for data embedding and can be associated with another encryption method to make it safer. The proposed system is reported to be highly robust and secur

Planning and implementing sustainability in higher education institutions: an overview of the difficulties and potentials

Planning in sustainable development is believed to be an important element in allowing higher education institutions to set their goals and to commit themselves towards undertaking concrete actions and measures at all levels in order to implement sustainability. Yet, there is a paucity of research that has looked at the extent to which planning can support institutions of higher education to assess their performances and to determine whether the set aims have been met. This research gap needs to be met to allow a better understanding of how planning can help to promote the integration of the three components of sustainable development–economic development, social development and environmental protection in higher education. This paper explores the challenges for planning the sustainable development in higher education, also outlining the potentials lessons learned that could assist in improving Education for Sustainable Development efforts in Higher Education Institutions. Among its main results are the fact that many universities wish to pursue sustainable development, but their efforts are hindered by lack of institutional support and planning and limited emphasis on approaches, such as problem-based learning. The universities that are engaged in the field have to face many problems, varying from limited resources to lack of trained staff. As a result, integrated approaches to sustainability become difficult to implement. Finally, the paper has identified the fact that many opportunities offered mainstream developments, such as the UN Declaration ‘The World we Want’ or the UN Sustainable Development Goals are not being put to full use

Validation of Pediatric Height Estimation Formulae in Suburban Communities in South-east Nigeria: A Cross-sectional Study.: Validation of Pediatric Height Estimation Formulae

Background: Height measurement is one of the common essential anthropometric measurements in clinical pediatrics. The most accurate method of determining a child  height is to  measure the height. However, in emergency situations and some resource limited settings, obtaining the actual height of a child may not be feasible hence the need to estimate. The most common age-based formulae for height estimation in children is 6n + 77 where n = age in years. The accuracy of this height estimation formulae has not been assessed in developing setting like ours with high prevalence of malnutrition. This study therefore sought to evaluate the accuracy of the height estimation formula in children in communities across Enugu southeast Nigeria. Method: Children 2-12 years old who met the inclusion criteria were enrolled over 12 months from three of the 17 Local Government Area of Enugu State. Height was measured using a standard stadiometer and estimated height was calculated 6n + 77. Data collected was analyzed using SPSS. Result: Of the 4046 children enrolled, majority (86.1%) were of normal height for age while 2.6% were stunted. The formula underestimated height of children in younger age bracket and overestimated height in older children. Overall, the estimated height using the formula was within ±10% agreement of the actual height of surveyed children in 77.0% of children surveyed. Conclusion: The 6n + 77 formula is a reasonable but not entirely accurate for height estimation for children in our setting. Keywords: Children, Height, Estimation, Accurac