ABSTRACT: Agriculture is the major consumer of water in Pakistan. However, water application and ... more ABSTRACT: Agriculture is the major consumer of water in Pakistan. However, water application and water use efficiencies are very low. The main reason for low efficiency is the over irrigation by the farmers. Farmers normally over irrigate the field due to lack of proper knowledge ...
African Journal of Business Management, Oct 4, 2010
Strategy without action is futile, and action without strategy is fatal" (Sun-Tzu). Strategy and ... more Strategy without action is futile, and action without strategy is fatal" (Sun-Tzu). Strategy and organization are closely interlinked. If a firm's strategies can greatly influence the organizational structure, the organizational environment can also make certain business unit strategies very unlikely or sometimes totally impractical for the managers. Establishing close links between a firm's human resource, organizational design and strategy is therefore very crucial for a strategy to become successful. Managers in Islamic firms, on the other hand often fail to create excellent coordination between a firm's strategy and its functional departments, processes, systems and people. Where Islamic firms need to learn the art of converting their strategy into strategic action efficiently, it is also equally important to align their organizations with their strategies. This article is specifically aimed at providing some clear cut guidelines to the mangers of the firms operating in an Islamic environment as to how they can create an excellent coordination between different organizational units and once created, how they can use such a coordination for mobilizing each and every ounce of intelligence available to a firm and putting together all the intellectual resources of their employees for achievement of their strategic goals.
Journal of Pharmaceutical and Biomedical Analysis, Sep 21, 2007
Selective and efficient analytical methods are required not only for quality assurance but also f... more Selective and efficient analytical methods are required not only for quality assurance but also for authentication of Chinese herbal medicine. A simple, rapid and valid fingerprint method has been first carried out for the quality control of Cephalotaxus sinensis by using high-performance liquid chromatography (HPLC) coupled with photodiode array detection (DAD) and electrospray ionisation-tandem mass spectrometry (ESI-MS). The characteristic analytical fingerprints of this plant extract showed 18 common peaks, and out of these, 10 compounds involving 2 new compounds were identified by comparing the retention time, UV and ESI-MS/MS spectrum of each standard with those of each peak separated by on-line HPLC-DAD-MS/MS. Moreover, the effects of collecting locations, harvesting time, storage time, drying methods, and medicinal portions on herbal chromatographic fingerprints were examined by similarity analysis and principal component analysis (PCA) along with markers. Using the reference fingerprint along with markers, the best harvesting time, cultivation location and medicinal part were determined. The results obtained suggest that the chromatographic fingerprint combining similarity evaluation and PCA along with markers or pharmacologically active constituents can efficiently identify raw herb of Cephalotaxus sinensis from different sources, which provide helpful clues to the study of plant's secondary metabolites and benefit quality control.
Advanced Computational Techniques in Electromagnetics, 2014
The scope of this paper is to design and simulate a novel structure having simultaneous negative ... more The scope of this paper is to design and simulate a novel structure having simultaneous negative permittivity and permeability so called double negative metamaterial or left handed material. The DNG structure consists of five rectangular split ring resonators on one side of dielectric medium and a couple of wires on other side. The complex permittivity, permeability and refractive index are determined from simulated Scattering parameters using direct retrieval method. Simulations of DNG structure are carried out using CST MWS. MATLAB is used for verification of negative values of structure's parameter.
Journal Chemical Society of Pakistan, May 16, 2010
Abstract The present study was designed to estimate the concentration of heavy toxic metals in Pa... more Abstract The present study was designed to estimate the concentration of heavy toxic metals in Pakistani herbal products frequently used for the treatment of various ailments. For this purpose, twenty five herbal products of well reputed herbal manufacturers were selected. ...
... of Agriculture, Faisalabad, Pakistan E-mail: [email protected] ANSbst Asian Network for ... more ... of Agriculture, Faisalabad, Pakistan E-mail: [email protected] ANSbst Asian Network for Scientific Information The Sciences 1 (6): 404-406 November-December, 2001 Partial Purification of Peroxidase from Tomato M. Anjum Zia, Khalil-ur-Rehman, M. Khalid Saeed ...
Astragalin, one of the flavonoid extracted from plants is increasingly in demand in food and phar... more Astragalin, one of the flavonoid extracted from plants is increasingly in demand in food and pharmaceutical industries due to its various biological and physiological activities including antioxidation, antiallergy, anti-inflammation and anti-hepatoptoxic. The whole plant of Thesium chinense Turcz is a major source of astragalin. This study developed a low-cost process encompassing the efficient extraction, fractionation, isolation and recrystallization to obtain high-purity astragalin from Thesium chinense and it could improve the economic utilization of this plant. In this study plant was extracted with 80% ethanol for 3 h and extract was fractionated on AB-8 (styrene based copolymer) with water, 20, 40 and 80% aqueous ethanol. Astragalin was isolated by silica gel column and purified by recrystalization with methanol. These conditions resulted 90% recovery of Astragalin with 95% purity.
ABSTRACT Abstract In this study, we evaluated the analgesic and anti-inflammatory activities of a... more ABSTRACT Abstract In this study, we evaluated the analgesic and anti-inflammatory activities of a 70% ethanol extract from Rosa taiwanensis Nakai (RTEtOH). The analgesic effect was determined using acetic acid-induced writhing response and formalin test. The anti-inflammatory activity was evaluated by λ-carrageenan-induced paw edema in mice. The anti-inflammatory mechanism of RTEtOH was examined by measuring the levels of cyclooxygenase-2 (COX-2), nitric oxide (NO), tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, and malondialdehyde (MDA) in the paw edema tissue and the activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione reductase (GRd) in the liver tissue. The betulinic acid and oleanolic acid contents of RTEtOH were assayed by HPLC. The results showed that RTEtOH decreased the acetic acid-induced writhing responses (1.0 g/kg) and the late phase of the formalin-induced licking time (0.5 and 1.0 g/kg). In the anti-inflammatory models, RTEtOH (0.5 and 1.0 g/kg) reduced the paw edema at 3, 4, and 5 h after λ-carrageenan administration. Moreover, the anti-inflammatory mechanisms might be due to the decreased levels of COX-2, TNF-α, IL-1β, and IL-6, as well as the inhibition of NO and MDA levels through increasing the activities of SOD, GPx, and GRd. The contents of two active compounds, betulinic acid and oleanolic acid, were quantitatively determined. This study demonstrated the analgesic and anti-inflammatory activities of RTEtOH and provided evidence to support its therapeutic use in inflammatory diseases.
A series of experimental studies was carried out on diatomic molecules to understand how they int... more A series of experimental studies was carried out on diatomic molecules to understand how they interact with intense laser fields. These studies have mainly consisted of multiple photon excitation, ionization and dissociation of hydrogen, oxygen, and chlorine molecules using time of flight electron and ion spectroscopy. I took advantage of the similarities and differences in the molecular structure of these molecules in order to investigate whether different molecules interact differently with the applied fields. Clear experimental evidence of molecular Bond Softening as an intensity dependent variation in the vibrational distribution of molecular ions is being reported for the first time in H_2 and D_2. The competition between different channels in the above threshold dissociation of molecules had been predicted recently using the dressed molecular states model. My results on these branching ratios are qualitatively consistent with the theoretical predictions. The study on oxygen concentrated mainly on the anomalous intensity dependence of the final state vibrational distribution. I have used a model similar to Smith's model to explain the role intermediate states play in the ionization of oxygen. In a series of arguments, I have shown that this anomalous behavior can be explained as a pure intermediate state interplay in the first approximation. Finally, in the photoelectron spectroscopy of chlorine, I have observed the positive Ponderomotive shifts known for a long time but never directly observed before. Also observed in the spectra is a very low order above threshold ionization process of highly excited atoms. These observations in chlorine suggest an unexplored mechanism of exposing atoms to intense fields without the risk of their ionization in the rising part of the laser pulses.
The use of Twitter as a discussion platform for political issues has led researchers to study its... more The use of Twitter as a discussion platform for political issues has led researchers to study its role in predicting election outcomes. This work studies a much neglected aspect of politics on Twitter namely "election trolling" whereby supporters of different political parties attack each other during election campaigns. We also propose a novel strategy to detect terms that are usually not associated with sentiment but are introduced by supporters of political parties to attack the opposing party. We demonstrate a lack of political maturity as evidenced through high percentage of political attacks in a developing region such as Pakistan.
Skimming wells are meant to extract top fresh water layer in the fresh-saline aquifer. Their deve... more Skimming wells are meant to extract top fresh water layer in the fresh-saline aquifer. Their development in the Indus basin occurred through private sector in a technological vacuum. As a result, these wells have some technical, environmental and social constraints, which hinder the sustainability of these wells. As an initial step to improve the well technology, the hydraulic and hydro-salinity responses of the fresh-saline aquifer under different pumping regimes need to be monitored. The present paper reports the hydraulic and hydro-salinity behavior of the Indus basin aquifer in Pakistan under field conditions at farmers' wells. Two sites, having 6-and 16-strainer wells were monitored during July 2000-December 2001. The 6-strainer well was operated for 4 h with single-, 4-and 6-strainer arrangements and the spatial behaviors of specific drawdown were observed under these arrangements. The 16-strainer well was monitored continuously for the above period. The well discharge, pumped water quality and pumping duration was recorded of every pumping event under farmer's practice to extract groundwater. The rainfall and temporal water table fluctuation was also recorded at this site. The impact of 24 years of well operation on groundwater quality was observed by comparing the hydro-salinity profiles of 1974 and 1998 under 3-strainer well. The results showed that the specific drawdown was higher for single-strainer and it decreased with the increase in number of strainers in skimming wells and hence reduced the chances of saline-upconing. Each strainer in multi-strainer well contributes equally in well discharge provided the horizontal distances among the strainers are equal. The pumped water quality in fresh-saline aquifer was a very sensitive function of fresh water recharge and pumping duration. It was observed that with the increase in daily operation from 2 to 12 h per day, the pumped quality deteriorated three-folds and there was also 30% reduction in well discharge due to high suction lift. It was observed that continuous operation of a 3-strainer well having discharge of 14 lps over the 24 years had raised the fresh-saline interface (iso-concentration line of 1.5 dS/m) to 9 m. Keeping in review the observations, it is recommended that the daily operation of 4-6 h keep the water quality within marginal limit (<1.5 dS/m) and the pumping operation is also cost-effective with only 15-20% reduction in well discharge for the study area. #
2009 ICME International Conference on Complex Medical Engineering, 2009
Canola oil produced from the seeds of Brassica napus and Brassica rapa. These cultivars, low in e... more Canola oil produced from the seeds of Brassica napus and Brassica rapa. These cultivars, low in erucic acid and glucosinolates, are very different from high erucic acid rapeseed oil in chemical, physical and nutritional properties. In this study different varieties of canola oil seed were analyzed and the results showed that the average moisture, ash, oil, protein and glucosinolate contents
The AMP/Pz system is industrially important but modeled VLE data are scarce. Reported data were u... more The AMP/Pz system is industrially important but modeled VLE data are scarce. Reported data were used to develop a NRTL model representing binary VLE data of aqueous AMP and Pz solutions and ternary VLE data for aqueous AMP/Pz solutions at different temperatures and concentrations. The model represents very well the experimental results, but could be improved when more data are available in the parameter regression. The model shows that the activity coefficients of AMP are higher than those of Pz. The suggested binary interaction parameters can reasonably well predict the ternary system.
ABSTRACT This paper shows research on performance aspects of IPv6 in network as well as in tunnel... more ABSTRACT This paper shows research on performance aspects of IPv6 in network as well as in tunnel broker mechanism. Experiments are carried out in two places including computer laboratory and at home where IPv6 network has been created. The IPv6 network created in computer lab is a full fledge IPv6 network having five number of computers connected together via switch. DHCPv6 server and clients have been categorized there and as a result we have a DHCPv6 server giving automatic IPv6 addresses to the clients through an open source application for windows XP architecture called dibbler. Simulation software wireshark has been used for showing the performance of DHCPv6 server giving IPv6 addresses to the clients and at the same time is used for showing the performance of DHCPv6 clients about receiving automatic global IPv6 addresses from the DHCPv6 server. Packet filtering has been done with that of IPv6 and IPv4 and performance have been measured. In the home environment, the same network procedure is followed just reducing the number of computers connected together in the network. Again DCHPv6 server has been created in home network and is connected to a tunnel broker where a tunnel has been created successfully. During the creation of tunnel at the tunnel broker side some amount of time is consumed. This amount of time is measured using wireshark. Also, packets are filtered with IPv6 and IPv4 for finding the required amount of time for performance enhancement and comparisons have been made.
2011 International Conference on Advances in Social Networks Analysis and Mining, 2011
Web 2.0 technologies have given birth to the blogosphere, which is an information sharing medium ... more Web 2.0 technologies have given birth to the blogosphere, which is an information sharing medium by the users for the users. Furthermore, these technologies have also expanded the search problem to a new form of search known as blog search. Similar to Web search, blog search has been affected by spam which affects the quality of search results. This paper
ABSTRACT: Agriculture is the major consumer of water in Pakistan. However, water application and ... more ABSTRACT: Agriculture is the major consumer of water in Pakistan. However, water application and water use efficiencies are very low. The main reason for low efficiency is the over irrigation by the farmers. Farmers normally over irrigate the field due to lack of proper knowledge ...
African Journal of Business Management, Oct 4, 2010
Strategy without action is futile, and action without strategy is fatal" (Sun-Tzu). Strategy and ... more Strategy without action is futile, and action without strategy is fatal" (Sun-Tzu). Strategy and organization are closely interlinked. If a firm's strategies can greatly influence the organizational structure, the organizational environment can also make certain business unit strategies very unlikely or sometimes totally impractical for the managers. Establishing close links between a firm's human resource, organizational design and strategy is therefore very crucial for a strategy to become successful. Managers in Islamic firms, on the other hand often fail to create excellent coordination between a firm's strategy and its functional departments, processes, systems and people. Where Islamic firms need to learn the art of converting their strategy into strategic action efficiently, it is also equally important to align their organizations with their strategies. This article is specifically aimed at providing some clear cut guidelines to the mangers of the firms operating in an Islamic environment as to how they can create an excellent coordination between different organizational units and once created, how they can use such a coordination for mobilizing each and every ounce of intelligence available to a firm and putting together all the intellectual resources of their employees for achievement of their strategic goals.
Journal of Pharmaceutical and Biomedical Analysis, Sep 21, 2007
Selective and efficient analytical methods are required not only for quality assurance but also f... more Selective and efficient analytical methods are required not only for quality assurance but also for authentication of Chinese herbal medicine. A simple, rapid and valid fingerprint method has been first carried out for the quality control of Cephalotaxus sinensis by using high-performance liquid chromatography (HPLC) coupled with photodiode array detection (DAD) and electrospray ionisation-tandem mass spectrometry (ESI-MS). The characteristic analytical fingerprints of this plant extract showed 18 common peaks, and out of these, 10 compounds involving 2 new compounds were identified by comparing the retention time, UV and ESI-MS/MS spectrum of each standard with those of each peak separated by on-line HPLC-DAD-MS/MS. Moreover, the effects of collecting locations, harvesting time, storage time, drying methods, and medicinal portions on herbal chromatographic fingerprints were examined by similarity analysis and principal component analysis (PCA) along with markers. Using the reference fingerprint along with markers, the best harvesting time, cultivation location and medicinal part were determined. The results obtained suggest that the chromatographic fingerprint combining similarity evaluation and PCA along with markers or pharmacologically active constituents can efficiently identify raw herb of Cephalotaxus sinensis from different sources, which provide helpful clues to the study of plant&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s secondary metabolites and benefit quality control.
Advanced Computational Techniques in Electromagnetics, 2014
The scope of this paper is to design and simulate a novel structure having simultaneous negative ... more The scope of this paper is to design and simulate a novel structure having simultaneous negative permittivity and permeability so called double negative metamaterial or left handed material. The DNG structure consists of five rectangular split ring resonators on one side of dielectric medium and a couple of wires on other side. The complex permittivity, permeability and refractive index are determined from simulated Scattering parameters using direct retrieval method. Simulations of DNG structure are carried out using CST MWS. MATLAB is used for verification of negative values of structure's parameter.
Journal Chemical Society of Pakistan, May 16, 2010
Abstract The present study was designed to estimate the concentration of heavy toxic metals in Pa... more Abstract The present study was designed to estimate the concentration of heavy toxic metals in Pakistani herbal products frequently used for the treatment of various ailments. For this purpose, twenty five herbal products of well reputed herbal manufacturers were selected. ...
... of Agriculture, Faisalabad, Pakistan E-mail: [email protected] ANSbst Asian Network for ... more ... of Agriculture, Faisalabad, Pakistan E-mail: [email protected] ANSbst Asian Network for Scientific Information The Sciences 1 (6): 404-406 November-December, 2001 Partial Purification of Peroxidase from Tomato M. Anjum Zia, Khalil-ur-Rehman, M. Khalid Saeed ...
Astragalin, one of the flavonoid extracted from plants is increasingly in demand in food and phar... more Astragalin, one of the flavonoid extracted from plants is increasingly in demand in food and pharmaceutical industries due to its various biological and physiological activities including antioxidation, antiallergy, anti-inflammation and anti-hepatoptoxic. The whole plant of Thesium chinense Turcz is a major source of astragalin. This study developed a low-cost process encompassing the efficient extraction, fractionation, isolation and recrystallization to obtain high-purity astragalin from Thesium chinense and it could improve the economic utilization of this plant. In this study plant was extracted with 80% ethanol for 3 h and extract was fractionated on AB-8 (styrene based copolymer) with water, 20, 40 and 80% aqueous ethanol. Astragalin was isolated by silica gel column and purified by recrystalization with methanol. These conditions resulted 90% recovery of Astragalin with 95% purity.
ABSTRACT Abstract In this study, we evaluated the analgesic and anti-inflammatory activities of a... more ABSTRACT Abstract In this study, we evaluated the analgesic and anti-inflammatory activities of a 70% ethanol extract from Rosa taiwanensis Nakai (RTEtOH). The analgesic effect was determined using acetic acid-induced writhing response and formalin test. The anti-inflammatory activity was evaluated by λ-carrageenan-induced paw edema in mice. The anti-inflammatory mechanism of RTEtOH was examined by measuring the levels of cyclooxygenase-2 (COX-2), nitric oxide (NO), tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, and malondialdehyde (MDA) in the paw edema tissue and the activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), and glutathione reductase (GRd) in the liver tissue. The betulinic acid and oleanolic acid contents of RTEtOH were assayed by HPLC. The results showed that RTEtOH decreased the acetic acid-induced writhing responses (1.0 g/kg) and the late phase of the formalin-induced licking time (0.5 and 1.0 g/kg). In the anti-inflammatory models, RTEtOH (0.5 and 1.0 g/kg) reduced the paw edema at 3, 4, and 5 h after λ-carrageenan administration. Moreover, the anti-inflammatory mechanisms might be due to the decreased levels of COX-2, TNF-α, IL-1β, and IL-6, as well as the inhibition of NO and MDA levels through increasing the activities of SOD, GPx, and GRd. The contents of two active compounds, betulinic acid and oleanolic acid, were quantitatively determined. This study demonstrated the analgesic and anti-inflammatory activities of RTEtOH and provided evidence to support its therapeutic use in inflammatory diseases.
A series of experimental studies was carried out on diatomic molecules to understand how they int... more A series of experimental studies was carried out on diatomic molecules to understand how they interact with intense laser fields. These studies have mainly consisted of multiple photon excitation, ionization and dissociation of hydrogen, oxygen, and chlorine molecules using time of flight electron and ion spectroscopy. I took advantage of the similarities and differences in the molecular structure of these molecules in order to investigate whether different molecules interact differently with the applied fields. Clear experimental evidence of molecular Bond Softening as an intensity dependent variation in the vibrational distribution of molecular ions is being reported for the first time in H_2 and D_2. The competition between different channels in the above threshold dissociation of molecules had been predicted recently using the dressed molecular states model. My results on these branching ratios are qualitatively consistent with the theoretical predictions. The study on oxygen concentrated mainly on the anomalous intensity dependence of the final state vibrational distribution. I have used a model similar to Smith's model to explain the role intermediate states play in the ionization of oxygen. In a series of arguments, I have shown that this anomalous behavior can be explained as a pure intermediate state interplay in the first approximation. Finally, in the photoelectron spectroscopy of chlorine, I have observed the positive Ponderomotive shifts known for a long time but never directly observed before. Also observed in the spectra is a very low order above threshold ionization process of highly excited atoms. These observations in chlorine suggest an unexplored mechanism of exposing atoms to intense fields without the risk of their ionization in the rising part of the laser pulses.
The use of Twitter as a discussion platform for political issues has led researchers to study its... more The use of Twitter as a discussion platform for political issues has led researchers to study its role in predicting election outcomes. This work studies a much neglected aspect of politics on Twitter namely "election trolling" whereby supporters of different political parties attack each other during election campaigns. We also propose a novel strategy to detect terms that are usually not associated with sentiment but are introduced by supporters of political parties to attack the opposing party. We demonstrate a lack of political maturity as evidenced through high percentage of political attacks in a developing region such as Pakistan.
Skimming wells are meant to extract top fresh water layer in the fresh-saline aquifer. Their deve... more Skimming wells are meant to extract top fresh water layer in the fresh-saline aquifer. Their development in the Indus basin occurred through private sector in a technological vacuum. As a result, these wells have some technical, environmental and social constraints, which hinder the sustainability of these wells. As an initial step to improve the well technology, the hydraulic and hydro-salinity responses of the fresh-saline aquifer under different pumping regimes need to be monitored. The present paper reports the hydraulic and hydro-salinity behavior of the Indus basin aquifer in Pakistan under field conditions at farmers' wells. Two sites, having 6-and 16-strainer wells were monitored during July 2000-December 2001. The 6-strainer well was operated for 4 h with single-, 4-and 6-strainer arrangements and the spatial behaviors of specific drawdown were observed under these arrangements. The 16-strainer well was monitored continuously for the above period. The well discharge, pumped water quality and pumping duration was recorded of every pumping event under farmer's practice to extract groundwater. The rainfall and temporal water table fluctuation was also recorded at this site. The impact of 24 years of well operation on groundwater quality was observed by comparing the hydro-salinity profiles of 1974 and 1998 under 3-strainer well. The results showed that the specific drawdown was higher for single-strainer and it decreased with the increase in number of strainers in skimming wells and hence reduced the chances of saline-upconing. Each strainer in multi-strainer well contributes equally in well discharge provided the horizontal distances among the strainers are equal. The pumped water quality in fresh-saline aquifer was a very sensitive function of fresh water recharge and pumping duration. It was observed that with the increase in daily operation from 2 to 12 h per day, the pumped quality deteriorated three-folds and there was also 30% reduction in well discharge due to high suction lift. It was observed that continuous operation of a 3-strainer well having discharge of 14 lps over the 24 years had raised the fresh-saline interface (iso-concentration line of 1.5 dS/m) to 9 m. Keeping in review the observations, it is recommended that the daily operation of 4-6 h keep the water quality within marginal limit (<1.5 dS/m) and the pumping operation is also cost-effective with only 15-20% reduction in well discharge for the study area. #
2009 ICME International Conference on Complex Medical Engineering, 2009
Canola oil produced from the seeds of Brassica napus and Brassica rapa. These cultivars, low in e... more Canola oil produced from the seeds of Brassica napus and Brassica rapa. These cultivars, low in erucic acid and glucosinolates, are very different from high erucic acid rapeseed oil in chemical, physical and nutritional properties. In this study different varieties of canola oil seed were analyzed and the results showed that the average moisture, ash, oil, protein and glucosinolate contents
The AMP/Pz system is industrially important but modeled VLE data are scarce. Reported data were u... more The AMP/Pz system is industrially important but modeled VLE data are scarce. Reported data were used to develop a NRTL model representing binary VLE data of aqueous AMP and Pz solutions and ternary VLE data for aqueous AMP/Pz solutions at different temperatures and concentrations. The model represents very well the experimental results, but could be improved when more data are available in the parameter regression. The model shows that the activity coefficients of AMP are higher than those of Pz. The suggested binary interaction parameters can reasonably well predict the ternary system.
ABSTRACT This paper shows research on performance aspects of IPv6 in network as well as in tunnel... more ABSTRACT This paper shows research on performance aspects of IPv6 in network as well as in tunnel broker mechanism. Experiments are carried out in two places including computer laboratory and at home where IPv6 network has been created. The IPv6 network created in computer lab is a full fledge IPv6 network having five number of computers connected together via switch. DHCPv6 server and clients have been categorized there and as a result we have a DHCPv6 server giving automatic IPv6 addresses to the clients through an open source application for windows XP architecture called dibbler. Simulation software wireshark has been used for showing the performance of DHCPv6 server giving IPv6 addresses to the clients and at the same time is used for showing the performance of DHCPv6 clients about receiving automatic global IPv6 addresses from the DHCPv6 server. Packet filtering has been done with that of IPv6 and IPv4 and performance have been measured. In the home environment, the same network procedure is followed just reducing the number of computers connected together in the network. Again DCHPv6 server has been created in home network and is connected to a tunnel broker where a tunnel has been created successfully. During the creation of tunnel at the tunnel broker side some amount of time is consumed. This amount of time is measured using wireshark. Also, packets are filtered with IPv6 and IPv4 for finding the required amount of time for performance enhancement and comparisons have been made.
2011 International Conference on Advances in Social Networks Analysis and Mining, 2011
Web 2.0 technologies have given birth to the blogosphere, which is an information sharing medium ... more Web 2.0 technologies have given birth to the blogosphere, which is an information sharing medium by the users for the users. Furthermore, these technologies have also expanded the search problem to a new form of search known as blog search. Similar to Web search, blog search has been affected by spam which affects the quality of search results. This paper
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