62 research outputs found
Effect of marketing knowledge management on organizational performance: A Case study in Iran insurance of Kermanshah
The aim of this paper is to study the effect of marketing knowledge management on organizational performance of Iranshahr Insurance of Kermanshah. For this purpose, 82 employees of this company were selected with the use of simple random sampling method and responded to self-made questionnaire of the research. The obtained data from these questionnaires were analyzed by using two-variable regression test. The results indicated that assets and capabilities of marketing knowledge management have significant effect (p<0.01) on general performance, market-related performance, customers’ performance and financial performance of Iranshahr Insurance company of Kermanshah
Identifying and prioritizing capabilities and skills necessary for marketing knowledge-based companies of Science and Technology Park in Kermanshah
The aim of this study is identifying and prioritizing capabilities and skills necessary for marketing knowledge-based companies of Science and Technology Park in Kermanshah. For this purpose 120 of experts, deputies and managers of knowledge-basedcompanies of Science and Technology Park in Kermanshah have been selected with the use of simple random sampling method and responded to the author-made questionnaire and finally, the obtained data from the research sample have been analyzed with the use of single-sample t-test. The results indicate that from the point of view of the experts, deputies and managers of knowledge-based companies of Science and Technology Park in Kermanshah inclination toward learning, team work skills, communicational skills, analytical skills, planning skills and sales management skills are considered as necessary skills for marketing knowledge-based companies of Science and Technology Park in Kermanshah (p<0.01) and also strategic marketing, international marketing and exports, research and analysis of market, innovation and development of new products, service and internet marketing are among necessary capabilities for marketing knowledge-based companies of Science and Technology Park in Kermanshah (p<0.01)
Identifying and prioritizing capabilities and skills necessary for marketing knowledge-based companies of Science and Technology Park in Kermanshah
The aim of this study is identifying and prioritizing capabilities and skills necessary for marketing knowledge-based companies of Science and Technology Park in Kermanshah. For this purpose 120 of experts, deputies and managers of knowledge-basedcompanies of Science and Technology Park in Kermanshah have been selected with the use of simple random sampling method and responded to the author-made questionnaire and finally, the obtained data from the research sample have been analyzed with the use of single-sample t-test. The results indicate that from the point of view of the experts, deputies and managers of knowledge-based companies of Science and Technology Park in Kermanshah inclination toward learning, team work skills, communicational skills, analytical skills, planning skills and sales management skills are considered as necessary skills for marketing knowledge-based companies of Science and Technology Park in Kermanshah (p<0.01) and also strategic marketing, international marketing and exports, research and analysis of market, innovation and development of new products, service and internet marketing are among necessary capabilities for marketing knowledge-based companies of Science and Technology Park in Kermanshah (p<0.01)
Effect of marketing knowledge management on organizational performance: A Case study in Iran insurance of Kermanshah
The aim of this paper is to study the effect of marketing knowledge management on organizational performance of Iranshahr Insurance of Kermanshah. For this purpose, 82 employees of this company were selected with the use of simple random sampling method and responded to self-made questionnaire of the research. The obtained data from these questionnaires were analyzed by using two-variable regression test. The results indicated that assets and capabilities of marketing knowledge management have significant effect (p<0.01) on general performance, market-related performance, customers’ performance and financial performance of Iranshahr Insurance company of Kermanshah
Neuro-Fuzzy prediction of alumina-supported cobalt vanadate catalyst behavior in the Fischer-Tropsch process
Alumina-supported cobalt vanadate multitransition-metal catalyst was prepared by impregnation method. The catalyst was characterized using X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller, X-ray fluorescence and Transmission electron microscopy. The cobalt/vanadium catalyst was employed for Fischer-Tropsch process in an autoclave reactor. The evaluation of this catalyst occurred at different temperature (423-623 K), over a pressure range of 10-50 bars with the Syngas H2/CO ratio varying from 2 to 6. The catalyst gave a high and selective conversion of syngas into methane. The degree of syngas conversion increased with increasing temperature and pressure. The adaptive Neuro-Fuzzy inference system (ANFIS) model has been applied for the training of the fuzzy system and the test set was applied to evaluate the performance of the system including moving average error (MAE), mean square error (MSE), root mean square error (RMSE) and mean absolute percentage error (MAPE). The results exposed that the predicted values from the model were in good agreement with the experimental data
Spatiotemporal Distribution of PM10 and PM2.5 within and Around The City of Arak, Iran: Effect of Natural Sources
In the present study, the concentrations of PM10 and PM2.5 were measured within and around the city of Arak from March 2016 through March 2017. The measurements were done every 12 days by means of TSI DustTrak sampler containing specific heads for PM10 and PM2.5. The sampling points included eight stations within the city as well as two stations around the city. The average (±SD) values of 108.56 ±55.56 and 42.58 ±15.88µg/m3 were obtained for daily concentrations of PM10 and PM2.5, respectively. PM10 showed the maximum concentrations during summer (144.47µg/m3) followed by spring (109.44 µg/m3), autumn (100.92µg/m3), and winter (77.12µg/m3). On the other hand, the highest values of PM2.5 was observed during winter (44.13 µg/m3) followed by autumn (42.74µg/m3), summer (37.58µg/m3) and spring (33.77 µg/m3). The correlation between PM10 and PM2.5 was highest in winter (R2=0.9288) followed by spring (R2=0.6728), summer (R2=0.6713), and autumn (R2=0.5592). It was concluded that more than 57 and 19% of the PM2.5 and PM10 samples exceeded the Iranian national ambient air quality standards, respectively
National and sub-national age-sex specific and cause-specific mortality and disability-adjusted life years (DALYs) attributable to household air pollution from solid cookfuel use (HAP) in Iran, 1990–2013
National and sub-national mortality, years of life lost due to premature mortality (YLLs), years lived with
disability (YLDs) and disability-adjusted life years (DALYs) for household air pollution from solid cookfuel use
(HAP) in Iran, 1990–2013 were estimated based on the Global Burden of Disease Study 2013 (GBD 2013). The
burden of disease attributable to HAP was quantified by the comparative risk assessment method using four
inputs: (1) exposure to HAP, (2) the theoretical minimum risk exposure level (TMREL), (3) exposure-response
relationships of related causes (4) disease burden of related causes. All across the country, solid fuel use
decreased from 5.26% in 1990 to 0.15% in 2013. The drastic reduction of solid fuel use leaded to DALYs
attributable to HAP fell by 97.8% (95% uncertainty interval 97.7–98.0%) from 87,433 (51072–144303) in 1990
to 1889 (1016–3247) in 2013. Proportion of YLLs in DALYs from HAP decreased from 95.7% in 1990 to 86.6% in
2013. Contribution of causes in the attributable DALYs was variable during the study period and in 2013 was in
the following order: ischemic heart disease for 43.4%, chronic obstructive pulmonary disease for 24.7%,
hemorrhagic stroke for 9.7%, lower respiratory infections for 9.3%, ischemic stroke for 7.8%, lung cancer for
3.4% and cataract for 1.8%. Based on the Gini coefficient, the spatial inequality of the disease burden from HAP
increased during the study period. The remained burden of disease was relatively scarce and it mainly occurred
in seven southern provinces. Further reduction of the disease burden from HAP as well as compensation of the
increasing spatial inequality in Iran could be attained through an especial plan for providing cleaner fuels in the
southern provinces
Pollution Potential of General Dentistry Offices in Terms of Wastewater and Solid Waste: A Case Study in the City of Arak, Iran
Dental wastewater and solid waste are one of the most important sources of environmental pollution. The objective of the present study was to evaluate the quality of wastewater and solid waste produced in the general dentistry offices in the city of Arak, Iran. A total number of 30 samples of wastewater and 30 samples of solid waste were taken from 30 general dentistry offices. The samples of wastewater were analyzed for metals and other parameters such as BOD, COD, and TSS. The samples of solid wastes were manually separated into 66 components and 4 categories and then weighted. The mean concentrations of Zn, Cu, Hg, Fe, B, Ba, Sn, Ag, Pb, Al, Mn, Cr, and Co were 3950.09, 2578.59, 1247.28, 1060.21, 538.36, 493.21, 300.91, 156.56, 108.32, 107.37, 91.11, 66.00, and 6.48µg L-1, respectively. The mean generation of dental solid waste in each general dentistry office was 670.22g day-1. Potential infectious waste, domestic-type waste, chemical & pharmaceutical waste, and toxic waste constituted 51.52%, 35.30%, 11.11% and 2.07%, of the total waste generated, respectively. Due to the high levels of some metals in the samples, the wastewater should be treated before discharging into the public sewer
Effective scale-up of oily sludge bioremediation from a culture-based medium to a two-phase composting system using an isolated hydrocarbon-degrading bacterium: effect of two-step bioaugmentation
The scale-up feasibility of oily sludge (OS) biodegradation from a culture-based medium to a new two-stage composting process bioaugmentated with an indigenous isolated strain was surveyed. First, the bacterial strain (Enterobacter hormaechei strain KA6) was isolated from OS, and then its ability in biomass production and oil degradation in culture-based medium was evaluated. Finally, the strain was used for bioaugmentation in composting reactors which included four in-vessel experiments with the initial total petroleum hydrocarbon (TPHs) concentrations between 10 and 30 g kg-1. The strain was added twice to the composting reactors which lasted 16 weeks including the primary composting stage (PCS) (first inoculation) and the secondary composting stage (SCS) (second inoculation). It was observed that the strain degraded 58.67, 74.79, 45.33, 10.66, and 5.92% of 1, 2, 3, 4, and 5% oil concentrations, respectively, in culture-based medium during 7 days. Regarding OS bioremediation in the composting experiments, a total TPH removal rate of 65.83–81.50% was also reached after the two-stage duration of 16 weeks. Due to the second bioaugmentation stage, the SCS showed higher TPH removal efficiency than the PCS. The study confirmed the effectiveness of the scaling-up of a culture-based medium to a composting process for treating OS
Bioremediation of petroleum hydrocarbons by vermicomposting process bioaugmentated with indigenous bacterial consortium isolated from petroleum oily sludge
Finding a sound ecological-based approach for the removal of petroleum hydrocarbons (PHCs) from petroleum oily sludge (POS) generated in oil refinery plants is still a challenge. This study investigated the removal of total petroleum hydrocarbons (TPHs) using bioaugmentated composting (BC) by hydrocarbon-degrading bacteria (HDB) and vermicomposting (VC) by Eisenia fetida, individually and in combination (BCVC). After isolating two native bacterial strains from POS prepared from an oil refinery plant in Iran, the degradation capability of their consortium was initially assessed in mineral Bushnell-Haas medium (MBHM). Then, the biodegradation rates of POS in the BC, VC, and BCVC treatments containing different concentrations of TPHs (5, 10, and 20 g/kg) were determined by measuring TPHs before and after the biodegradation. The results showed that the consortium degraded 20–62% of TPHs contents of Kerosene (1–5%) in the MBHM after 7 days. After 12 weeks, the TPHs removal percentages in the BC, VC, and BCVC treatments were respectively found to be 81–83, 31–49, and 85–91 indicating the synergistic effect of bacteria and worms in bioremediation of POS. The PHCs biodegradation in the BC, VC, and BCVC experiments was fitted to 1st order model kinetics. The results of toxicity tests indicated that the values of the no observed lethal concentration (NOLC) and median lethal concentration (LC50) of TPHs were 2–5 and 14.64 g/kg, respectively after 28 days of earthworm exposure. Morphological impairments such as swelling, coiling, and curling were observed when TPHs concentration was even lower than NOLC. The study verified the effectiveness of vermicomposting bioaugmentated with the indigenous bacterial consortium for POS bioremediation
- …