Learning Management Systems (LMS): Inside Matters

By the end of last millennium, many universities and colleges started using internet to meet their distance learning needs. Different course management systems (CMS) were developed to meet the needs of online and hybrid courses. These CMS later on transformed into Learning Management Systems (LMS). Many educational institutions have already started using LMS and there are still many who are considering adopting one. The big question before the late adopters of this online learning technology is which LMS they should opt for? This study will be useful for those who are in the process of selecting an LMS as well as those who are in the business of designing one. A survey was conducted to get feedback from the faculty of higher education institutions to find out the major barriers in adoption of e-learning and to find out what kind of functionalities and teaching methodologies should be supported by LMSs. Results indicate lack of training, lack of incentives to use e-learning, lack of technical support and lack of time to develop e-courses are the major barriers in adoption of e-learning by the faculty members. As far as the desired functionalities in an LMS are concerned ability to create student groups for group activities, availability of discussion board, announcement board and online quizzes, file sharing/transfer functionality were the most sought functionalities. The most desired method of teaching that need to be supported by LMS had been group problem solving, discussion based strategies, problem based learning and simulation. The results of survey will be helpful for the adopter as well as designers of LMS

Energy Consumption, Trade and GDP: A Case Study of South Asian Countries

Acute shortage of energy sources in developing countries in general and South Asian countries in particular has shown that energy has become a binding input for any production process. Nowadays operation of heavy machinery and electrical equipment, and transportation of raw material and final products from their place of origination to their destination require heavy consumption of energy in one form or the other. Therefore, energy consumption that was previously ignored in the production function of a firm and an economy is now considered a vital input in production process. It affects GDP directly as by increasing energy consumption; more output can be produced with given stock of capital and labor force in a country. Also uninterrupted availability of energy at reasonable cost improves competiveness of home products in international markets and thus increases exports of home country a great deal. Resulting increase in net exports further adds to the GDP through multiplier effec

Pecking at Pecking Order Theory: Evidence from Pakistan’s Non-financial Sector

This study tests the Pecking Order Theory for the capital structure of listed firms in Pakistan. As per Pecking Order Theory in capital structure formulation, internally generated resources would have first priority, followed by debt issuance where equity is used as a last resort. In its strong form, the Pecking Order Theory sustains that equity issues would never occur, whereas in its weak form, limited amounts of issues are acceptable. The methodology adopted in this empirical study involves cross-section regressions and the testing of hypotheses stemming from the underlying theory in its strong and weak forms. A sample of capital structure of non-financial firms listed at KSE is considered from 2001 to 2008. A statistical tool of panel data regression analysis is used to test different firms’ data. The value of R2, t-test and F-Stat indicate firms in KSE supporting the weak form of pecking order theory, i.e., the option of using internal equity and debt is more preferred and a limited amount of external equity is used for reinvestment and fund raising purposes

An investigation of university student readiness towards M-learning using Technology Acceptance Model

M-learning is learning delivered via mobile devices and mobile technology. The research indicates that this medium of learning has potential to enhance formal as well as informal learning. However, acceptance of m-learning greatly depends upon personal attitude of students towards this medium; therefore this study focuses only on the individual context in which role of student’s readiness towards m-learning is investigated using Technology acceptance model (TAM). TAM is the popular choice among the researchers for investigating acceptance of any new technology primarily because of its robust and parsimonious nature. The sample selected for this study consisted of students from the private sector universities in a developing country. A structured questionnaire was used for data collection. The final results of investigation were based on 244 valid responses. The results indicate that the students’ skills and psychological readiness strongly influence their perceived ease of use (PEU) and perceived usefulness (PU) of m-learning, whereas both these constructs positively influenced their behavioral intention to use m-learning. The findings of this study have theoretical as well as practical implications which are discussed at the end

Antibacterial Potentials of Human Urine at Acidic pH 5

To identify factors determining susceptibility of individuals to urinary tract infections (UTIs).Methods: In this descriptive study , 55 hospitalized patients' urine samples were analyzed. Presence of red blood cells , pus cells, epithelial cells, casts and crystals were observed and counted under per high power field (HPF) by microscopy. While pH, specific gravity, protein, leukocytes, nitrites, glucose, ketones, urobilinogen, blood and bilirubin, were analyzed using dipstick method. All the samples were streaked on CLED agar for isolation of bacteria; and SDA for yeast.Results: Twenty urine samples were found culture positive, of which 15 were from females and 5 from males. Cultures were isolated and identified as E. coli (11), Enterococcus (4), Klebsiella (3), Pseudomonas (1) and yeast (1). Interestingly, organisms were mainly isolated from urine samples having pH >5.5. In all the culture positive samples, pus cells were >20-40 /HPF. No patient with culture negative had urine pH 6.5 or above in the present study.Conclusion: The probability of bacteriuria (UTI) and pyuria (increase pus cells in urine) increases with rise in urine pH. Persons with urine pH5 are generally protected from UTIs. Thus mechanism/s needs to be elucidated

Synthesis, characterization and evaluation of biological activities of manganese-doped zinc oxide nanoparticles

Purpose: To synthesize, characterize and investigate the antimicrobial properties of pure and manganese-doped zinc oxide nanoparticles.Method: Un-doped and manganese-doped zinc oxide (Mn-doped ZnO) nanoparticles were prepared using co-precipitation method. The synthesized Mn-doped ZnO  nanoparticles were characterized using energy-dispersive x-ray spectroscopy  (EDX), scanning electron microscopy (SEM), and x-ray diffraction (XRD)  spectroscopic techniques. Their band gap energies were measured with ultraviolet-visible (UVVis) spectroscopy, while their antioxidant properties were evaluated by ferric reducing antioxidant power (FRAP), DPPH radical-scavenging, ferric  thiocyanate (FTC) and total phenolic content (TPC) assays. The antimicrobial  activities of the nanoparticles against different bacterial strains were determined using agar diffusion method.Result: Results from XRD, SEM, EDX and UV-Vis analyses demonstrated  successful synthesis of undoped and Mn-doped ZnO nanoparticles as seen in their hexagonal, wurtzite structures. The un-doped and Mn-doped ZnO nanoparticles had average grain sizes of 16.72 nm and 17.5 nm, and band gap energies of 3.585 eV and 2.737 eV, respectively. Significant antibacterial activity was manifested by Mndoped ZnO against E. coli, S. aureus, Klebsiella and B. subtilis, with zones of inhibition (ZOIs) of 13 ± 0.09 mm, 14 ± 0.01 mm, 18 ± 0.07 mm and 20 ± 0.10 mm, respectively. The Mn-doped ZnO nanoparticles also exhibited effective and significant antioxidant potential relative to butylated hydroxytoluene (BHT) and un-doped ZnO nanoparticles.Conclusion: Mn-doped ZnO nanoparticles demonstrate significant antimicrobial and antioxidant activities. Thus, the preparation is a good candidate for further development into therapeutic formulations.Keywords: Mn-doped ZnO, Nanoparticles, Properties, Antioxidant, Antibacteria

Energy Consumption, Trade and GDP: A Case Study of South Asian Countries

Using panel co-integration approach over the period 1980-2009 for South Asian economies, this study investigates the dynamic linkages between energy consumption, trade and GDP. The results show that, in the short run, feedback relationship holds between energy consumption and GDP and between energy consumption and exports. In the long run, the feedback relation holds between energy and GDP while unidirectional causality holds from export to energy. Thus, feedback hypothesis between energy and GDP holds in the short as well as in the long run. The feedback relationship between trade and energy consumption suggests that any shortage of energy supply will lessen the trade and this reductions in trade will lessen the benefits of trade in the region since results have also shown that reduction in export can impede GDP growth