Guangzhou, China
Guangzhou, China

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Wu J.,Vocational College | Zhang H.,University of Alberta | Guan Y.,Guangdong University of Technology
Proceedings of the World Congress on Intelligent Control and Automation (WCICA) | Year: 2015

In this paper, we present a novel approach for visual loop-closure detection in autonomous robot navigation. Our method uses locality sensitive hashing (LSH) as the basic technique for matching the binary visual features in the current view of a robot with the visual features in the robot appearance map. We show that this approach is highly efficient in comparison with using non-binary visual features such as SIFT and that it is more accurate than the popular bag-of-words (BoW) approach for generating loop closure candidates. Our experiment was conducted with an indoor dataset. © 2014 IEEE.

Bele J.L.,University of Ljubljana | Bele J.L.,Vocational College | Rugelj J.,University of Ljubljana
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2010

Appropriately designed web based learning materials are thought to be more efficient than traditional ones because of interactivity and multimedia, which enable clear explanations, motivating design, active learning, instant feedback and other advantages. Our research question is whether students achieve better learning results if they learn from web based learning materials than from traditional ones. Although the research results show that students spent less time learning from traditional learning materials than students learning from web based learning materials, the differences of learning times were not significant. However, we proved significant differences in terms of gained knowledge. The students using web based learning materials performed significantly better than students using traditional learning materials. © 2010 Springer-Verlag Berlin Heidelberg.

Kozuh I.,University of Maribor | Jeremic Z.,Ryerson University | Sarjas A.,University of Maribor | Bele J.,Vocational College | And 2 more authors.
Educational Technology and Society | Year: 2015

With the increased use of social media there is a growing interest in using social interaction and social presence in education. Despite this phenomenon, no appropriate methodology was found on effective integrating of both concepts into online learning. In this study, we propose integrating two different kinds of learning tools to provide social interaction and social presence in Personal Learning Environments. We have evaluated the proposed concept in a classroom setting, using a specific social interaction tool and a specific social presence tool. The findings revealed that although the use of the social interaction tool was positively associated with students' academic success, the perceived ease of using the social presence tool was negatively related to students' success.

Zhu M.,Kunming University of Science and Technology | Zhu M.,Vocational College | Wang S.,Kunming University of Science and Technology
Advanced Materials Research | Year: 2012

The hydropower, as the renewable energy, the development strategy of which is the important part of China's whole energy development strategy in the 12 th Five-Year Plan. The insufficient capital injection of government is the main restriction factor of the hydropower development. The paper introduces the Public-Private-Partnerships (PPP) theories and practices, combining with the situations of China's tight financing policies, sufficient private capital stock and so on, analyses the main problems on China's hydropower financing and then builds the PPP structure to solve the problems, expounds the advantages, supports and safeguard measures of PPP structure. The paper puts forward the ideas that considering the hydropower project is quasi commonweal infrastructure, it is necessary for the governments to give rational compensation or Taxes and dues preferential policies to the SPC in order to guarantee stable cash flow and reasonable return on investment. © (2012) Trans Tech Publications.

Zhang Z.,Vocational College | Jiang Q.,Vocational College | Tian X.,Henan Polytechnic University | Liu M.,Vocational College
Proceedings of the IEEE International Conference on Software Engineering and Service Sciences, ICSESS | Year: 2013

In the context of triple play, 3G mobile education has become an inevitable trend in the development of remote education, but a practical 3G mobile education system is scarce in China. Therefore, combining with the 3G mobile communication technologies, GPS technology and the characteristics of mobile education, this paper builds a 3G mobile learning system (MLS3G) model based on GPS. After solving the key technologies of 3G intelligent terminal, GPS/GPRS transceiver module, 3G gateway module and GIS module, the test verification is passed on the 3G intelligent terminal and MLS3G server platform. Research shows that MLS3G model has better interactivity, real-time performance and versatility. © 2013 IEEE.

Yin C.,Shandong water polytechnic | Li Y.,Vocational College | Zhang D.,China Mobile | Cheng Y.,Rizhao Radio and University | Yin M.,Jing Yi Primary School
Proceedings - 2nd IEEE International Conference on Advanced Computer Control, ICACC 2010 | Year: 2010

In this paper we present DSMAC-an energy efficient medium access control (MAC) protocol in wireless sensor networks which are widely used for long-time monitoring. Our protocol is designed for event-driven and ultra-low power sensor networks. Using dynamic sleep scheme to save energy is one of the key problems in this kind of system. The basic idea is that, when an event is apperceived by sensors, all nodes in the network use a value of grads to earmark the location of an event, which is used for data searching expediently, and all nodes adjust their sleep periods dynamically due to their grads. Simulations show that, our MAC protocol for event-driven wireless sensor networks shows higher efficiency than exists approaches and is more suitable for long-time monitoring. ©2010 IEEE.

Yilmaz M.T.,Vocational College | Karakaya M.,Selcuk University | Aktas N.,Atatürk University
European Journal of Lipid Science and Technology | Year: 2010

The physical-chemical properties, fatty acid composition and thermal properties of cattle subcutaneous, tallow and intestinal fats were determined. Subcutaneous fat differed from the other fat types with respect to its lower melting point (29.0 °C) and higher saponification (211.4 mg KOH/g) and iodine (50.55) values. The cattle fat types contained palmitic acid (16:0), stearic acid (18:0), oleic acid (18:1n-9) and linoleic acid (18:2n-6) as the major components of fatty acid composition (24.58-25.90%, 10.21-33.33%, 28.18-46.05%, 1.54-1.73%, respectively). A differential scanning calorimetry (DSC) study revealed that two characteristic peaks were detected in both crystallization and melting curves. Major peaks (Tpeak) of tallow and intestinal fats were similar and determined as 24.10-27.71 °C and 2.16-4.75 °C, respectively, for crystallization peaks and 7.09-9.39 °C and 43.28-46.49 °C, respectively, for melting peaks in DSC curves; however, those of subcutaneous fat (12.48 °C and -6.79 °C for crystallization peaks and 3.56 °C and 23.55 °C for melting peaks) differed remarkably from those of the other fat types. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Liang J.-H.,Vocational College
Wool Textile Journal | Year: 2010

The resources of orange peels are abundant but are underutilized. This paper makes the basic experiments on abstraction and spectrometric determination for pigments from orange peels and determines the optimal extractants to be absolute ethanol and distilled water based on the changes of color concentrations and chromatic light. The longest absorption wavelength of pigments from orange peels is 400 nm. The paper adopts the direct and mordant methods to study the dyeing of pigments from orange peel for silk fibers and makes the determination and analysis for the dye uptake rate and color fastness. The optimal dyeing processes of direct and mordant methods are that stock solution of pigments is used in the direct method with the liquor ratio of 1:50, pH value 6, 90 °C, 60 min, The conclusion which can be drawn with the aluminum and iron dyeing mordants is that the concentration of aluminum dyeing mordant is 6% (owf), the concentration of aluminum dyeing mordant is 4% ( owf ) and the temperature is 60 °C and the fastness of the dyed fabrics is satisfactory to some extent.

Weihong C.,Vocational College | Junhua L.,Vocational College | Chaoyang L.,Vocational College | Jiebin W.,Vocational College
Advances in Intelligent and Soft Computing | Year: 2012

Array structure is adopted in adaptive array antenna of mobile base station, and the spatial cutting technique is used to divide the coverage area of base station into many differentiated small regions, improve utilizations of the system resources, reduce system interference and increase system capacity. This paper analyzes the space partitioning theory of adaptive array antenna signals, presents the traditional resource allocation algorithm of the adaptive array antenna area: resource fixed regional resource allocation algorithm and maximum and minimum regional resource allocation algorithm. Concerning problems existing in the traditional resource allocation algorithm of the adaptive array antenna area, the allocation algorithm for improvement of regional resources based on minimum standard deviation was put forward, and the principles of its regional resource allocation and calculation methods were introduced. Through simulation of call blocking rates for these three regional resource allocation algorithms, we can know that, the regional resource allocation algorithm of minimum standard deviation can reduce the call blocking rate compared with the traditional regional resource allocation algorithm, and the result in load balancing was best. © 2012 Springer-Verlag GmbH.

Liu L.,Vocational College | Hou Y.,Vocational College | Xu B.,Vocational College
International Conference on Logistics, Engineering, Management and Computer Science, LEMCS 2014 | Year: 2014

The main part of the industrial innovation is the firms. Firms are also the powerful source of the innovative impetus. The combination of technological innovation and innovation of the business model is an effective way to help firms improve competitiveness and the realization mechanism of the industrial innovation. Now with the increasingly market competition, the simple pursuit of technological innovation or business model innovation has been unable to make enterprises to maintain long-term competitive advantage. Only combine the technical innovation and the business model innovation to form a complete value chain can help the enterprises to be invincible. This article analyzes the mechanism of the combination of technological innovation and business model innovation. The article presents the problems of the combination of technological innovation and business model innovation in current China and puts forward corresponding countermeasures and suggestions for the combination. © 2014. The authors - Published by Atlantis Press.

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