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‘Association of demographic variables versus frequency of use of core aerospace engineering e-Databases’: a research survey of aerospace scientists and engineers of Bangalore
Ramachandran Guruprasad,
Payanippan Marimuthu
Issue:
Volume 1, Issue 1, July 2013
Pages:
1-8
Received:
15 May 2013
Published:
10 June 2013
Abstract: Demography is the scientific study of characteristics and dynamics pertaining to the human population, including things like size, growth rate, density and distribution of a specified group. The primary reason people use demography is to create statistics--in fact, the term roughly translates to "people measurement." These allow a person to get a picture of how common specific traits within a group are. Comparing statistics over time also allows researchers to show changes that are happening in the target group. A research survey was undertaken to ascertain the ‘Association of Demographic Variables versus the Frequency of Usage of Core Aerospace Engineering e-Databases’ amongst the aerospace scientists and engineers of selected 16 aerospace organizations of Bangalore. The major findings of this study are: The c2 test indicates that the demographic variable, viz., Category Wise Distribution of the Respondents, namely: Aerospace Scientist / Aerospace Engineer(c2=20.832, P Value = 0.000), Occupation(c2=65.978, P Value = 0.000), Qualification(c2=28.207, P Value = 0.005), and Specialization(c2=42.228, P Value = 0.003), by the ‘Frequency of Use of Core Aerospace Engineering e-Databases’ have significant association. This implies that the percentage of preference for the above mentioned demographic variables are not approximately the same [Not Uniformly distributed]. The c2 tests for the remaining demographic variables, namely, Gender and Age-Group by the ‘Frequency of Use of Core Aerospace Engineering e-Databases’ have no significant association. This implies that percentages of preference for these demographic variables are approximately the same [Uniformly distributed].
Abstract: Demography is the scientific study of characteristics and dynamics pertaining to the human population, including things like size, growth rate, density and distribution of a specified group. The primary reason people use demography is to create statistics--in fact, the term roughly translates to "people measurement." These allow a person to get a p...
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Teaching Science through Computation
Issue:
Volume 1, Issue 1, July 2013
Pages:
9-18
Received:
17 May 2013
Published:
10 June 2013
Abstract: We present a computational pedagogy approach to teaching an interdisciplinary science course. Modeling and simulation tools allow us to introduce a science topic from a simplistic framework and then move into details after learners gain a level of interest to help them endure the hardships and frustration of deeper learning. More than 90% of students in course surveys state that modeling improved their understanding of science concepts. Students appear to appreciatelearning not only the use of simulation tools to design and conduct science experiments, but also basic programming skills to simulate a science experiment using a simple algebraic equation, new = old + change. A strong link is established between computational and natural sciences. Students learn in a simplistic framework how laws of nature act as the source of change.
Abstract: We present a computational pedagogy approach to teaching an interdisciplinary science course. Modeling and simulation tools allow us to introduce a science topic from a simplistic framework and then move into details after learners gain a level of interest to help them endure the hardships and frustration of deeper learning. More than 90% of studen...
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Improving the Evaluation Performance of Space-Time Trellis Code through STTC Visualisation Tool
H. Harun,
U. A. I. Ungku Chulan,
K. Khazani
Issue:
Volume 1, Issue 1, July 2013
Pages:
19-23
Received:
25 April 2013
Published:
10 June 2013
Abstract: In this paper we present a new visualisation approach in the effort of improving the evaluation strategy of space-time trellis code (STTC) generator matrix G. To our knowledge, although visualisation is widely used to handle a variety of problems, it has never been employed specifically to solve complexity problems that are related to generator matrix G evaluation. Most approaches are either mathematically or algorithmically inclined. As such, they tend to offer a series of refinement that enhances the current available method, but do not provide fresh insight on the problem at hand. By comparing it with the enhancement strategy that was discovered via the normal approach (i.e., by analysing algorithm) it was discovered that visualisation had inspired an entirely different pruning technique that outperformed the common approach by 20%.
Abstract: In this paper we present a new visualisation approach in the effort of improving the evaluation strategy of space-time trellis code (STTC) generator matrix G. To our knowledge, although visualisation is widely used to handle a variety of problems, it has never been employed specifically to solve complexity problems that are related to generator ma...
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The Solubility - Intrinsic Dissolution Rate of Diazepam and Inclusion Complexes Diazepam with 2-Hydroxypropyl-β-Cyclodextrin
Hadžiabdić J.,
Elezović A.,
Hadžović S.,
Vehabović M.
Issue:
Volume 1, Issue 1, July 2013
Pages:
24-35
Received:
15 May 2013
Published:
10 June 2013
Abstract: When the fast absorption of diazepam is needed in order to suppress febrile convulsions and epileptic seizures, the most suitable is intravenous application diazepam. To avoid inappropriate self administration of such diazepam dosage form, orodispersible tablets of diazepam would be the dosage form of choice. Poor solubility of diazepam in water is directly related to its dissolution rate after release from a solid dosage form. Inadequate dissolution rate of diazepam can be the limiting factor for its absorption rate. Inclusion complexation of diazepam with 2-hydroxypropyl-β-cyclodextrin was carried out to increase the solubility of diazepam at pH 6.8. Determination of the intrinsic dissolution rate of diazepam as well as complexated diazepam was carried out to predict the absorption rate of diazepam at given pH value. The solubility of micronized diazepam (particle size 5.4 µm) at pH 6.8, was 0.043 mg mL-1, while the solubility of non-micronized diazepam (particle size 414.8 µm) at the same pH was 0.036 mg mL-1. Inclusion complexation of diazepam with 2-hydroxypropyl-β-cyclodextrin resulted in increased solubility of diazepam. One mole of 2-hydroxypropyl-β-cyclodextrin increased the solubility of micronized diazepam 6.82 fold, while two moles of 2-hydroxypropyl-β-cyclodextrin increased the solubility of diazepam 12.55 fold. Given that the values of intrinsic dissolution rates (IDR) of micronized diazepam, non-micronized diazepam and inclusion complex D: 2-HP-β-CD 1:1 were less than 0.1 mg min-1 cm-2, the absorption of diazepam dissolution would be the rate limiting step to absorption, while the inclusion complex D: 2-HP-β-CD 1:2 where an IDR value was greater than 0.1 mg min-1 cm-2 at pH 6.8, suggested that its dissolution might be the rate-limiting step to absorption. Hydroxypropyl-β-cyclodextrin increased the solubility of diazepam at pH 6.8, thus increasing the dissolution rate and causing faster absorption of diazepam at pH 6.8.
Abstract: When the fast absorption of diazepam is needed in order to suppress febrile convulsions and epileptic seizures, the most suitable is intravenous application diazepam. To avoid inappropriate self administration of such diazepam dosage form, orodispersible tablets of diazepam would be the dosage form of choice. Poor solubility of diazepam in water is...
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