Archives-December 

Super-resolution is the process of creating an high resolution image from a low resolution input sequence. To overcome the difficulties of good image registration, several methods have been proposed exploiting the non-neighbourhood intuition, i.e. any data-point can contribute to the ?nal result if it is relevant. These algorithms however limit in practice the search region for relevant points in order to lower the corresponding computational cost. Furthermore, they de?ne the non-neighbourhood relations in the high resolution space, where the true images are unknown. In this work, we introduce the use of phantom hashing to efficiently compute fully non-neighbourhood neighbours. We also restate the super-resolution functional using ?xed weights in the low resolution space, allowing us to use resolution schemes that avoid many artifacts.

Harvesting solar energy has been the keen focus of study among researchers all over the globe. In the current scenario of fast depleting non-renewable resources, efforts have to be made for maximum utilization of available solar radiations. The present review studies NEILS as one of the front runner as suitable HTF for solar collectors due to their impeccable thermal properties and the various possible reasons for enhancement in heat transfer properties of NEILS.

Supply of power for an implantable medical device through a thermoelectric generator shows potential way for a biological system. The direct utilization of the temperature difference existing whole biological body is the unique feature. This paper attempts to review the energy generation of an implanted thermoelectric generator for various physiological or environmental thermal surroundings. Also several technical approaches included to enhance the energy generation from an implanted thermoelectric generator, to shows its long-term potential energy supplier for such medical practices.

In the modern commercial era, companies and their managers are subjected to well publicized pressure to play an increasingly active role in society – so called “Corporate social responsibility”. It has been argued that an element in this development is simply enlightened self-interest in that social responsibility enhances corporate image and financial performance. To date the evidence to support this thesis derives from North America. Outside this continent evidence for any relationship is sparse. This study will initially attempt to define. The concept of corporate social responsibility and to examine its guiding principles. Subsequently, the available empirical research into the link between corporate social responsibility and economic performance will be evaluated this study examines different impacts of positive and negative CSR activities on financial performance of hotel, restaurant and airline companies, theoretically based on positivity and negativity effects. Findings suggest mixed results across different industries and will contribute to companies’ appropriate strategic decision-making for CSR activities by providing more precise information regarding the impacts of each directional CSR activity on financial performance.

The electronic absorption spectra of 3,5-diamino-1,2,4-triazole was recorded in the region of 190-450 nm. Quantum chemical calculations of energies, geometrical structures and electronic absorption spectra of 3,5-diamino-1,2,4-triazole were carried out by ab initio HF/6-31+G*, DFT (B3LYP/6-31+G*) and TD-DFT /B3LYP/6-31+G* level of theory with complete relaxation in the potential energy surface. The Mulliken charge analysis indicates that the nitrogen atoms of the triazole ring and the amino group attached to the ring are the main reactive centers of 3,5-diamino-1,2,4-triazole. The calculated HOMO-LUMO energies show that the molecule has low energy gap which implies low kinetic stability and high chemical reactivity. The study is extended to the analysis of dipole moment, EHOMO, ELUMO both in the gas phase and in the presence of solvent for comparison. Thermodynamic properties were also calculated and discussed. The calculated values of absorption wavelengths are compared with the experimental data for this molecule as a means of validation of the theoretical model used. The predicted results are in excellent agreement with the experimental ones.

Pesticides or agro-chemicals play a pivot in controlling pests on agricultural and horticultural crops. SEVIN 50% W.D.P. based on carbaryl. 1. Naphthylmethyl carbamate, is a broad spectrum pesticide for control of pests on fruits, vegetables, forage, cotton and other crops, as well as poultry and pets. In order to know the extent of toxicity five different concentrations of the toxicant ( Sevin) are taken – LC0 (2.13 ml. l-1)) , LC10 (2.54 ml. l-1) ), LC50 (3.01 ml. l-1) , LC90 (3.25ml. l-1) , LC100 (3.35 ml. l-1) . Uni -algal, axenic culture of Anabaena cylindrica, Lemm. was inoculated and the survival percentage was determined. The ( LC10 ,LC50 , LC90) three lethal concentrations were chosen to study the differential effects of different concentrations of the pesticide (Sevin) on the blue-green alga, Anabaena cylindrica, Lemm. The changes in the ATPase activity (?g ip liberated hr -1 50 ml culture) of the alga Anabaena cylindrica, exposed to different concentrations of the pesticide, Sevin, at different days of exposure and recovery. The enzyme activity values were far less than the control value and even less than the inoculation day value, except the 3rd day of exposure. No significant recovery was marked, indicating total destruction of the enzyme system in the exposed alga. The percent change in ATPase activity showed non-significant negative correlation with the exposure period in conc. A and B. However, in conc. C, a negative significant (r= -0.974; p < 0.01) correlation was marked. The ATPase activity increased in Conc. A (2.5 ml l -1) up to 12th day of exposure, when compared to the control value and then the enzyme activity decreased. With the increase in pesticide concentration and exposure period, the enzyme activity significantly declined, when compared to the control value. A maximum of 93.5% and 99.1% decrease was recorded on 15th day of exposure and 15th day of recovery in conc. C.

The transition of the students from secondary school to college/university level becomes a major challenge for majority of the students in Kenya. Moreover, compounding challenges have increasingly affected the student population towards adjusting in the university level. It is therefore recommended that a strategic orientation programme especially on guidance and counselling services for the first year diploma students. Accordingly, this paper advocates for the review of student support programmes towards the adjustment of first year students in the university/college environment. Finally, there is need for the inclusion of psychologists, counselling psychologists and psychiatrists in student support services.

Wireless Sensor Networks are used in numerous security sensitive applications, it composed of a huge number of resource limited sensors therefore we should make sure the network is secured against security attacks. Denial of service attack in WSNs is a serious attack that reduces the network capacity dramatically and the users fail to receive expected service. Many schemes have been proposed to tolerate or destroy DoS attack, but very few can identify intruders and provide security against this attack. In this paper, we explore the effects of DoS in WSN, effective security methods for achieving the security against this attack. Finally two important types of DoS attacks called jamming and reply attack are studied and possible solutions are recommended.

Grammatical metaphor is a kind of variation to semantics in different degrees caused by some deviation of grammatical character. From the view of meta function in systematic-functional linguistics, the author discusses three forms of grammatical metaphor systematically: ideational metaphor, interpersonal metaphor, textual metaphor and their techniques of expression.

Universe is continuously expanding, and is observed to expand at a continuous increasing speed, much greater than that of light, though the theory of relativity destroys the relevance of this statement. This gave birth to a theory called Big Bang theory, which says universe was born from a single point, started from pure energy and then came matter, space, and time. Within a short time, it is said to have “fight” with anti-matter and a small part of total matter constructed this whole universe.