Consumer ethics: The possible effects of terrorism and civil unrest on the ethical values of consumers

Research investigating the consumer's ethical beliefs, ideologies and orientation has been limited. Additionally, despite the repeated call in the literature for cross cultural research, virtually no studies have examined the ethical beliefs and ideologies of consumers from cultures other than those in North America. This study partially fills this gap in the literature by investigating the ethical beliefs, preferred ethical ideology, and degree of Machiavellianism of consumers from Egypt and Lebanon. The results indicate that consumers in Lebanon, which has been torn by civil unrest and terrorism, tend to be more Machiavellian, less idealistic, and more relativistic than their Egyptian counterparts. Additionally, the Lebanese consumers tend to be more accepting of questionable consumer practices.Mohammed Y. A. Rawwas is Assistant Professor of Marketing at the University of Northern Iowa. His research has appeared in theJournal of Business Ethics, Journal of Hospital Marketing, Health Marketing Quarterly, Medical Marketing & Media, and national proceedings of the American Marketing Association.Scott J. Vitell is Associate Professor of Marketing and holder of the Michael S. Starnes Lecturship in Marketing and Business Ethics at the University of Mississippi. His work has previously appeared in theJournal of Macromarketing, theJournal of Business Ethics, Research in Marketing, theBusiness and Professional Ethics Journal and theJournal of the Academy of Marketing Science as well as various other journals and proceedings.Jamal Al-Khatib is Assistant Professor of Marketing at the University of Wisconsin-Eau Claire. His research has appeared in theJournal of Consumer Marketing, International Marketing Review andResearch in the International Business Disciplines as well as various national and regional proceedings.     

A study of Hong Kong Businessmen's perceptions of the role “Guanxi” in the People's Republic of China

Guanxi is perceived as a major determinant for successful business in China. This research paper investigates the importance of Guanxi from the Hong Kong Businessmen's viewpoint. It confirms previous findings in this area and adds on new dimensions. Therefore, practitioners and academics may further refine their knowledge in this subject.Leung, T. K. P. is an Assistant Professor of Hong Kong Polytechnic University. He specializes in industrial marketing and marketing in China. His current research interests include issues in Guanxi, networking in China, and Chinese negotiation. He has published in referred journals related to the PRC market.Wong, Y. H. is an Assistant Professor at Hong Kong Polytechnic University. He teaches courses in sales management and international marketing. His current research focuses on issues of relationship marketing and Guanxi model. His recent publications include articles in preferred journal and books.Wong, Syson was a lecturer of Hong Kong Polytechnic University and is now a business consultant. She specializes in quantitative methods and China business. Her current consultancy works include a big project in China.     

Roll Waves in High Gradient Channels

Abstract

Vedernikov's number quantifies the allowable capacity that can be sustained as a stable uniform flow in a high gradient channel, but it does not provide any guidance to the design of freeboard when roll waves exist. Without considering roll waves, high gradient channels are undersized using the uniform flow approach and fail to maintain design integrity. This paper presents revised design curves to determine the stability of flow in high gradient channels. When the design condition exceeds the limiting condition, roll waves should be considered in design. This study applies the model of moving hydraulic jump to simulate roll waves. It provides estimations for wave heights when Froude number is greater than 1.50.     

Groundwater quality monitoring overview

A study was made to develop an approach to designing a groundwater-quality network for implementation by Mexico's Comisión Nacional del Agua (CNA) under support funding from The World Bank's (1996) PROMMA program. The network-design conceptualization and guidelines were based in part upon review of CNA's past and existing monitoring programs in measurement of water levels as well as measurements and analyses of groundwater quality. The principal focus used for this network-design framework rather was derived from identification of specific monitoring-program information needs. Also, a detailed review has been made of available reports and technical materials describing the nature, extent, and management of Mexico's groundwater resources and groundwater-quality impacts. This physical-based approach complemented a socioeconomic-based methodology being developed concurrently. Specific selection criteria and recommendations were made regarding network design components, in terms of monitoring locations, scheduling, and variables (parameters). Understandably, this preliminary design methodology, when implemented, should take into consideration somewhat realistic levels of effort that are judged to be fiscally sustainable by CNA over the near term. Moreover, some guidance also is provided in the case of fiscal or capacity-building limits of monitoring-program efforts.     

A groundwater perspective on the river basin management plan for central Portugal - developing a methodology to assess the potential impact of N fertilizers on groundwater bodies

The Water Framework Directive establishes that the river basin management plans must have a summary of the pressures and impacts of human activities, such as agriculture, on the chemical and quantitative status of groundwater bodies. In order to identify those areas where a potential impact from agricultural activities on groundwater bodies exists, but currently lacking groundwater monitoring data, a methodology was developed that combines the use of gross nitrogen balance values with the results of a specific vulnerability assessment index. A farm management efficiency parameter is added, to identify the factors that contribute to nitrogen use efficiency and to assess the near-future scenarios. This methodology allows the identification of significant pressures that may be responsible for a groundwater body failing good status where there is no representative monitoring network.     

Treatment performance of a constructed wetland during storm and non-storm events in Korea

The efficiency of a free water surface flow constructed wetland (CW) in treating agricultural discharges from stream was investigated during storm and non-storm events between April and December, 2009. Physico-chemical and water quality constituents were monitored at five sampling locations along the flow path of the CW. The greatest reduction in pollutant concentration was observed after passing the sedimentation zone at approximately 4% fractional distance from the inflow. The inflow hydraulic loading, flow rates and pollutant concentrations were significantly higher and variable during storm events than non-storm (baseflow) condition (p <0.001) that resulted to an increase in the average pollutant removal efficiencies by 10 to 35%. The highest removal percentages were attained for phosphate (51 ± 22%), ammonium (44 ± 21%) and phosphorus (38 ± 19%) while nitrate was least effectively retained by the system with only 25 ± 17% removal during non-storm events. The efficiency of the system was most favorable when the temperature was above 15 °C (i.e., almost year-round except the winter months) and during storm events. Overall, the outflow water quality was better than the inflow water quality signifying the potential of the constructed wetland as a treatment system and capability of improving the stream water quality.     

Nanofiltration process of glyphosate simulated wastewater

Nanofiltration separation of glyphosate simulated wastewater was investigated using a DK membrane. The effects of operating parameters and the addition of impurities on membrane performance were studied in detail. It was found that at 20 °C, with a glyphosate concentration of 500 mg/L and pH of 2.96, the glyphosate retention rate and the membrane permeate flux increased slightly with increasing transmembrane pressure. With an increase in operating temperature, the permeate flux increased linearly while the retention rate decreased. The permeate flux and glyphosate retention rate decreased with increasing feed concentration. Within the pH range of 3-5, the glyphosate retention rate decreases with increasing pH and reaches a minimum at the isoelectric point of the membrane, while the permeate flux reaches a maximum level at this point. In the pH range of 5-11, with the increases of pH, the glyphosate retention rate increases and the permeate flux decreases. Glyphosate retention decreases slightly with increasing NaCl and phosphite concentrations. This can be explained in terms of the shielding phenomenon.     

Treatment of domestic sewage by a metal membrane bioreactor

A submerged flat metal MBR (membrane bioreactor) was used to treat synthetic domestic sewage in this study. The experiment was continued for 270 days and ran under two modes as AMBR (aerobic membrane bioreactor) and A/O-MBR (anoxic/aerobic membrane bioreactor) at a permeate flux of 0.4-1 m3/(m2 d). PVA (polyvinyl alcohol) gel beads were added to the aeration tank with a volume ratio of 10% at the end of the A/O-MBR mode. The mean COD and TN removal efficiencies achieved 96.69 and 32.12% under the AMBR mode, and those were 92.17 and 72.44% under the A/O-MBR mode, respectively. SND (simultaneous nitrification and denitrification) occurred at high MLSS (mixed liquor suspended solids) concentration. The metal membranes reduced effluent COD during filtration. The system ran stably for 115 days at a permeate flux of 0.8-1 m3/(m2 d) without changing membranes under the AMBR mode, but the membrane filterability decreased gradually under high MLSS or A/O-MBR mode, and the addition of PVA worsened the membrane filterability on the contrary. PSD (particle size distribution) and sludge fractions had evident influence on membrane fouling. The main fouling mechanism was cake formation under the AMBR mode, and that was pore blocking under the A/O-MBR mode.     

Advanced phosphorus removal for secondary effluent using a natural treatment system

Mechanisms for low concentrations phosphorus removal in secondary effluent were studied, and a process was developed using limestone filters (LF), submerged macrophyte oxidation ponds (SMOPs) and a subsurface vertical flow wetland (SVFW). Pilot scale experimental models were applied in series to investigate the advanced purification of total phosphorus (TP) in secondary effluent at the Chengjiang sewage treatment plant. With a total hydraulic residence time (HRT) of 82.52 h, the average effluent TP dropped to 0.17 mg L(-1), meeting the standard for Class III surface waters. The major functions of the LF were adsorption and forced precipitation, with a particulate phosphorus (PP) removal of 82.93% and a total dissolved phosphorus (TDP) removal of 41.07%. Oxygen-releasing submerged macrophytes in the SMOPs resulted in maximum dissolved oxygen (DO) and pH values of 11.55 mg L(-1) and 8.10, respectively. This regime provided suitable conditions for chemical precipitation of TDP, which was reduced by a further 39.29%. In the SVFW, TDP was further reduced, and the TP removal in the final effluent reached 85.08%.