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Search Results: 1 - 10 of 17593 matches for " Haibo Bo "
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Essential Oil Composition of Artemisia scoparia Waldst. & Kitag from Qinghai-Tibetan Plateau of China  [PDF]
Lihong Yao, Haibo Bo
Journal of Analytical Sciences, Methods and Instrumentation (JASMI) , 2016, DOI: 10.4236/jasmi.2016.61001
Abstract: The oils extracted by hydro distillation from the aerial parts of Artemisia scoparia waldst. & kitag growing wild in two regions on Qinghai-Tibetan Plateau were analyzed by GC-MS. Eighty-three components were identified representing 97.5% of the total components detected. The major constituents of the oil from the samples obtained in the eastern of Riyue Mountain (2700 - 3200 m) were 2-ethenyl-naphthalene (45.1%), beta-pinene (11.2%), 3-carene (8.7%), 3,7-dimethyl-1,3,6- octatriene (7.9%), limonene (5.4%), alpha-pinene (3.5%) and beta-myrcene (2.0%). Whereas the oil from the plant collected in Qilian Mountain (3300 - 3500 m) was composed mainly of thujone (21.4%), 1,8-cineole (18.9%), camphor (9.1%), 4-methyl-1-(1-methyl ethyl)-3-cyclo hexen-1-ol (7.8%), 4-methyl-1-(1-methylethyl)-bicyclo[3.1.0]hexan-3-one (5.3%) and 2-isopropyl-5-methyl- 3-cyclohexen-1-one(5.0%).
Determination of Azoxystrobin Residues in Fruits and Vegetables by Gas Chromatography/Mass Spectrometry with Solid-Phase Extraction
固相萃取-气相色谱/质谱法分析水果和蔬菜中残留的嘧菌酯

BO Haibo,
薄海波

色谱 , 2007,
Abstract: A method was developed for the determination of azoxystrobin residues in fruits and vegetables by gas chromatography/mass spectrometry (GC/MS). Azoxystrobin residues were extracted with ethyl acetate-cyclohexane (1 : 1, v/v) by ultrasonication and then they were cleaned up on a silica solid-phase extraction (SPE) column to obtain an extract suitable for analysis by GC/MS in the selective ion monitoring (SIM) mode (the selected ion: m/z 344, 372, 388 and 403). The calibration curves were linear between area and concentration of azoxystrobin from 0.01 to 1.0 mg/kg with the correlation coefficient greater than 0.99. The average recoveries from spiked fruit and vegetable matrixes at three concentrations of 0.01, 0.1, 1.0 mg/kg ranged from 85.2% to 98.2% with relative standard deviation less than 21.5%. The limit of detection was 0.01 mg/kg and the limit of quantity was 0.05 mg/kg in fruit and vegetable matrixes, respectively.
Restricted Hysteresis Reduce Redundancy in Edge Detection  [PDF]
Bo Li, Ulrik S?derstr?m, Shafiq Ur Réhman, Haibo Li
Journal of Signal and Information Processing (JSIP) , 2013, DOI: 10.4236/jsip.2013.43B028
Abstract:

In edge detection algorithms, there is a common redundancy problem, especially when the gradient direction is close to -135°, -45°, 45°, and 135°. Double edge effect appears on the edges around these directions. This is caused by the discrete calculation of non-maximum suppression. Many algorithms use edge points as feature for further task such as line extraction, curve detection, matching and recognition. Redundancy is a very important factor of algorithm speed and accuracy. We find that most edge detection algorithms have redundancy of 50% in the worst case and 0% in the best case depending on the edge direction distribution. The common redundancy rate on natural images is approximately between 15% and 20%. Based on Canny’s framework, we propose a restriction in the hysteresis step. Our experiment shows that proposed restricted hysteresis reduce the redundancy successfully.

Robust Performance Rule Design for Stochastic Nonlinear Systemswith Model Uncertainty
模型不确定非线性随机系统的鲁棒性能准则设计

Wei Bo,Ji Haibo,
魏波
,季海波

系统科学与数学 , 2007,
Abstract: This paper deals with the theory of Robust performance rule from the view of dissipation for a large class of stochastic nonlinear systems with model uncertainty. In particular, the notion of dissipation associated with deterministic nonlinear systems is introduced for the uncertain stochastic nonlinear systems, and is used to study $H_\infty$ control. On the basis of exact stochastic nonlinear systems, the connection between the $L_2$-gain of the uncertain stochastic nonlinear systems and the solution to a certain HJI inequality is established. In general, it is difficult to solve the HJI partial differential equation, by using the Robust performance rule problem of the model satisfying some proper matching condition, the $H_\infty$ control law of the system is obtained without solving the HJI equation.
Study on Urban Residents’ Willingness to Buy the Products of Rural Tourism  [PDF]
Haibo Zhu, Ruihu Wu
iBusiness (IB) , 2012, DOI: 10.4236/ib.2012.42021
Abstract: The level of value injected into the rural economy is dependent consumers acceptance of rural tourism. Data was obtained through primary research conducted in the three provinces in China of Hunan, Guangdong and Gansu, the paper explores urban residents’ attitude to rural tourism and then estimates their willingness to pay for rural tourism products, utilizing hypothesis-evaluation to find a valid conclusion. The results show that their willingness is affected by gender, educational background, level of income; personal travel frequency, tourism form, aggregate demand form rural tourism, acceptance for rural tourism and the price of tourism in other cities have significant effect on their willingness to pay. The WTP proves that urban residents are usually willing to pay 35.1% more for non-rural tourism than they are for rural tourism.
An Innovative Marketing Model Based on AIDA: - A Case from E-bank Campus-marketing by China Construction Bank  [PDF]
Jiangyu Li, Haibo Yu
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.53B010
Abstract:

In mature marketing, general perception towards AIDA is that most enterprises will lay emphasis directly on value proposition of a product or services, and encourage clients going to each step of AIDA layers, finally to increase the total number of final step, say enlarging the number of actual buying action. However to some extent, the efficiency of such a simple model appears strongly inadequate. Based on AIDA theory and market feature of universities via e-bank at China Construction Bank (CCB) , this paper has introduced a new marketing model which present a new value proposition (new value proposition is attempting to focus on practical-teaching innovation and job competency improvement) to accelerate AIDA marketing activities at university market, the outcome further helps to grow AIDA at bigger market groups. Finding of this paper shows new model greatly improved marketing efficiency of e-bank services from CCB at university market, and it also unfolds a new perspective in marketing of the enterprises.

Ecological Conservation and Construction in China: Progress and Situation  [PDF]
Yingming Li, Haibo Qin
Modern Economy (ME) , 2014, DOI: 10.4236/me.2014.51006
Abstract:

Since late 1990s, China has made smooth progress in ecological conservation and construction. Now, the following characteristics of ecological protection are presented: 1) China is still facing severe challenges in ecological conservation and construction; 2) The advanced areas with extensive growth model and the underdeveloped areas that are ecologically sensitive co-exist in China; and 3) As a country in transition, China needs to explore national pathway for ecological protection, while facing the trends of being institutionalized, integrated and necessitated for the global ecological protection efforts. The key of ecological protection in China is to seek an optimal model and an effective pathway which can balance economic growth and environmental protection, to recognize the difference and non-replicability of ecosystems, and to effectively combine the institutional development and engineering construction of ecological protection.

Research on the Choice of Chinese Forest Products Channel Model: Commitment Perspectives  [PDF]
Haibo Zhu, Guijun Zheng
Modern Economy (ME) , 2016, DOI: 10.4236/me.2016.71009
Abstract: In researching channel relation it can be found that different negotiating abilities (channel power) decide commitment levels and different commitment levels decide the choice of channel model if we research the channel model choice of forest products in the perspective of channel members’ commitments. So leading enterprises, forest growers and distributors need to decide their commitment level according to their own negotiating ability in the channel system, and then choose right channel model.
Strategic Economic Partnerships, Exchange Rate Policy and Agricultural Trade: A Gravity Model Analysis of China’s Agricultural Trade Flows  [PDF]
Tadiwanashe Muganyi, Haibo Chen
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.45008
Abstract:

Agricultural trade in China is greatly influenced by government policy activities particularly regional integration agreements, strategic economic partnerships and exchange rate policy. China’s agricultural sector has grown significantly in the past two decades however the factors that have led to this growth have not been fully explored. This study applied the Gravity model in analyzing China’s bilateral agricultural trade flows with its major agricultural trading partners namely USA, Brazil, Japan, Thailand, Australia, Indonesia, Canada, Malaysia, Russia and Hong Kong. The study utilized trade flow panel data spanning over 15 years, from the year 2000 to 2014. Estimation results revealed that economic size, market size, distance between capitals, annual average market exchange rate, regional integration/strategic economic partnership status, cultural beliefs and language were all significant factors in explaining China’s bilateral agricultural trade flows for selected commodities in the period under review.

Razumikhin-Type Theorems on p-th Moment Stability for Stochastic Switching Nonlinear Systems with Delay  [PDF]
Haibo Gu, Caixia Gao
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.47129
Abstract:

This paper mainly tends to utilize Razumikhin-type theorems to investigate p-th moment stability for a class of stochastic switching nonlinear systems with delay. Based on the Lyapunov-Razumik- hin methods, some sufficient conditions are derived to check the stability of stochastic switching nonlinear systems with delay. One numerical example is provided to demonstrate the effectiveness of the results.

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