Xuzhou Institute of Technology

About: Xuzhou Institute of Technology is a education organization based out in Xuzhou, China. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 1696 authors who have published 1521 publications receiving 13541 citations.

Assessment for Eco-efficiency of Resource-based Cities

Abstract: A resource-based city is typically referred to as the city whose development is highly dependent on exploration of natural resources,and its resource industry is the major part of the whole economic system.During the past decades,resource-based cities have seriously degraded ecology and the environment in the process of exploration and production of natural resources,resulting in big challenges in realizing sustainable development.Some of them have made substantial efforts in enhancing the capability of sustainable development through developing circular economy.In order to make the conditions of developing circular economy more favorable in resource-based cities,a concept of eco-efficiency,considered an appropriate measure of the circular economy,was introduced in this paper.Then,the eco-efficiency of 16 resource-based cities in China in 2007 was estimated with the factor analysis method.Results indicated considerably varying values,showing that the maximum value of Tongchuan City was 3.9 times of the minimum value of Ma'anshan City.The type of resources showed a great impact on the eco-efficiency.The eco-efficiency values decreased in these cities of coal,metal,multi-resource and petroleum in a descending order.The average value of the eco-efficiency of coal cities was estimated to be 1.9 times of that of petroleum cities.Also,they were different in cities with the same resources.For example,the value of Tongchuan with the maximum value was 3.8 times of the value of Yangquan with the minimum value in coal cities.It was also found that the age of these cities has a little effect on their eco-efficiency rather than the location and size showing a great effect.The average value of western resource-based cities was generally higher than was central and eastern cities.Moreover,the living habits and consumption patterns show certain effect on the eco-efficiency.Some cities develop their economy with the patterns of end treatment or source reductions but most cities still with traditional patterns.It was found that they fail to get rid of the traditional patterns.Low reduction levels are frequently accompanied with a small environmental carrying capacity.As such,there is an urgent need to improve the condition of developing circular economy in these resource-based cities.In general,the eco-efficiency of resource-based cities is lower than other cities because of the nature of resource dependence.However,similar conditions are encountered by many cities which need to make great efforts in developing circular economy so as to slow down the trends in increasing the proportion of the heavy industry,address environmental pollution,lessen rapidly increased environmental pressure and improve the environmental efficiency.These work need to be done by both resource-based cities and other cities.

Sequence Determination of Cd and Pb in Honey by Incomplete Digestion-High Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry

Abstract: A fast and effective method was developed for sequence determination of Cd and Pb in honey by incomplete digestion-high resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GFAAS). Cd and Pb in some honey samples using incomplete digestion treatment were measured by HR-CS GFAAS. The factors influencing determination were investigated by single factor experimental design. The optimal determination conditions were found as follows: NH4H2PO4 (10mg/mL) were added as a chemical modifier with the volume of 5μL; pyrolysis temperature 600°C(Cd) and 800°C(Pb); atomization temperature 1100°C(Cd) and 1400°C(Pb). Detection limits (3σ, n=12) were found to be 0.06 μg/L and 0.78 μg/L for Cd and Pb, respectively. The precisions (RSD) for 6 replicate measurements of Cd and Pb in honeys were 3.8% and 2.6%, respectively. Recoveries of added Cd and Pb were varied from 95% to 103%. Therefore, the proposed method was rapid, accurate and stable with a high practical value. It provided scientific basis for multi-element sequence determination in food.

Team Member Work Role Performance: The Organizational Benefits From Performance-Based Horizontal Pay Dispersion and Workplace Benign Envy.

Abstract: In the context of the current uncertain, complex, and interdependent work systems, teams have become organizations' substantial working unit, which in turn challenges the traditional view of employee performance and ultimately results in the emergence of team member work role performance. Employee team-oriented work role behaviors with proficiency, adaptivity, and proactivity, which are integrated by the new construct, are so crucial to team effectiveness that many organizations keenly expect to achieve team member work role performance through implementing a dispersed pay-for-performance plan within a team. This study seeks to address the organizational practitioners' main concern that whether pay dispersion among team members (i.e., horizontal pay dispersion, HPD) could actually help realize team member work role performance and further examines why and when an employee could respond to HPD within a team by engaging in team member work role behaviors from the perspective of the performance-shaping basis and team member's workplace benign envy. Drawing on emotion-related theory, social comparison theory, legitimacy theory, expectation theory, and relative deprivation theory, it proposes that performance-based HPD could not only positively impact team member work role performance via workplace benign envy but also exert a direct-positive effect. Moreover, the activating effect of performance-based HPD on workplace benign envy and the mediating role are much stronger when a team member's pay position is higher. The multi-source data including objective information and subjective perception among 362 ordinary employees within 66 Chinese organizational teams primarily supported the moderated mediation model. Yet, the direct-positive effect was not established.

Efficient Two-Factor Authentication Protocol Using Password and Smart Card

Abstract: Two-factor authentication using password and smart card could reduce the risk than the use of a password alone. Recently, Chen et al. proposed a two-factor remote user authentication protocol using password and smart card and provide the criteria of authentication protocols. They claimed their protocol is secure against certain known attacks. In this paper, the authors showed that Chen et al.'s scheme is still vulnerable to the off-line password guessing attack, privileged administrator attack, key control attack and lacks of forward security. To solve these security problems, we propose an efficient two-factor authentication and key agreement protocol..