نتایج جستجو برای: harvesting time

تعداد نتایج: 1914536  

2012
Feng Qingchun Wang Xiu Zheng Wengang Qiu Quan Jiang Kai

In order to improve robotic harvesting and reduce production cost, a harvesting robot system for strawberry on the elevated-trough culture was designed. It was supposed to serve for sightseeing agriculture and technological education. Based on the sonar-camera sensor, an autonomous navigation system of the harvesting robot was built to move along the trough lines independently. The mature fruit...

2017
Attila Molnár V Timea Nagy Viktor Löki Kristóf Süveges Attila Takács Judit Bódis Jácint Tökölyi

Harvest of orchid tubers for salep production is widespread in southwestern Asia and the Balkans and constitutes a major conservation risk for wild orchid populations. Synanthropic habitats, such as graveyards, are important refuges for orchids and other organisms and could offer protection from salep harvesting because of their special cultural role. However, little is known about the occurren...

2012
C. R. Chen C. F. Chen N. T. Son

Information on rice crop phenology is important for crop management. This study aimed to detect rice crop phenology in the Vietnamese Mekong Delta using time-series MODIS data in 2007. Data processing steps included: (1) constructing time-series MODIS NDVI data, (2) filtering noise from the time-series data using empirical mode decomposition (EMD) and wavelet transform, (3) detecting rice crop ...

Journal: :ماشین های کشاورزی 0
محمد قاسمی مهدی خجسته پور محمدحسین آق خانی

evaluation of mechanical and electrical properties of agricultural products plays an important role in equipment design and optimizing post-harvest operations. among the crops, tomato and its products are the major processing industries in the world and its economic importance is increasing. considering the importance of the quality and various post harvesting uses of tomato, the evaluation of ...

2011
Gang Wu Yu Tan Yongjun Zheng Shumao Wang

As to aided driving by harvesting robot, there is the large amount of image data processing, meanwhile, harvesting robot requires real-time image processing and to calculate the linear parameters in a straight line detection of the walking target process. This paper presents a hardware processing platform to TMS320DM6437 digital signal processor as the core processing chip, and an improved Houg...

Journal: :CoRR 2016
Mohamed A. Abd-Elmagid Tamer A. ElBatt Karim G. Seddik

In this paper, we generalize conventional time division multiple access (TDMA) wireless networks to a new type of wireless networks coined generalized wireless powered communication networks (gWPCNs). Our prime objective is to optimize the design of g-WPCNs where nodes are equipped with radio frequency (RF) energy harvesting circuitries along with constant energy supplies. This constitutes an i...

Journal: :Electronic physician 2016
Ahmad Amouzeshi Mohamad Abbassi Teshnisi Nahid Zirak Alireza Sepehri Shamloo Hamid Hoseinikhah Behzad Alizadeh Aliasghar Moeinipour

INTRODUCTION Harvesting of the greater saphenous vein is almost an inevitable part of coronary artery bypass grafting (CABG) operations, and it is done by two main techniques, i.e., conventional or open vein harvesting (OVH) and the minimally-invasive endoscopic vein harvesting (EVH). This study aimed to compare these two techniques in off-pump CABG procedures with respect to clinical and patho...

Journal: :Circulation 2011
Lawrence J Dacey John H Braxton Robert S Kramer Joseph D Schmoker David C Charlesworth Robert E Helm Carmine Frumiento Gerald L Sardella Robert A Clough Stephan R Jones David J Malenka Elaine M Olmstead Cathy S Ross Gerald T O'Connor Donald S Likosky

BACKGROUND Use of endoscopic saphenous vein harvesting has developed into a routine surgical approach at many cardiothoracic surgical centers. The association between this technique and long-term morbidity and mortality has recently been called into question. The present report describes the use of open versus endoscopic vein harvesting and risk of mortality and repeat revascularization in nort...

Journal: :international journal of advanced biological and biomedical research 2014
afshin azmoodeh-mishamandani shamsollah abdollahpoor hossein navid mohammad moghaddam vahed

the object of this study was evaluation of a walking tractor drawn peanut harvester at different conditions of soil moisture content and forward speed and comparing it with manual harvesting. the evaluation factors for peanut harvester were two levels of soil moisture content and three levels of forward speed. the results revealed that the effect of soil moisture content was only significant on...

Journal: :The American naturalist 2002
Niclas Jonzén Jörgen Ripa Per Lundberg

We investigate how model populations respond to stochastic harvesting in a stochastic environment. In particular, we show that the effects of variable harvesting on the variance in population density and yield depend critically on the autocorrelation of environmental noise and on whether the endogenous dynamics of the population display over- or undercompensation to density. These factors inter...

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