نتایج جستجو برای: agrosilvicultural systems

تعداد نتایج: 1183350  

Journal: :journal of advances in computer research 0

fuzzy rule-based classification system (frbcs) is a popular machine learning technique for classification purposes. one of the major issues when applying it on imbalanced data sets is its biased to the majority class, such that, it performs poorly in respect to the minority class. however many cases the minority classes are more important than the majority ones. in this paper, we have extended ...

Journal: :journal of agricultural science and technology 2011
s. özpınar a. ozpinar

a long-term rotation experiment was established in 2001 to compare conservation or reduced tillage systems (shallow rototiller and chisel tillage) with conventional tillage system using mouldboard plough in a semi-arid region with mediterranean climate. field experiments were conducted to determine weed density and profitability of cropping systems in a crop rotation of winter wheat (triticum a...

Journal: :journal of agricultural science and technology 2012
s. h. sadeghi s. f. mousavi s. h. r. sadeghi m. abdolali

factor  is introduced for direct head loss calculation and sizing in dual-diameter laterals of sprinkler and trickle irrigation systems when the hazen-williams equation is to be applied. application of this factor prevents trial and error and uses fewer head-loss equations in calculating the total friction loss and designing dual-diameter laterals. the proposed factor is a function of total num...

Journal: :international journal of agricultural management and development 2015
marzieh panahzadeh parikhani fatemeh razzaghi borkhani hossein shabanali fami naser motiee abotaleb hosseinpoor

the main purpose of this study was to investigate the major barriers to application of good agricultural practices (gaps) technologies in sustainability of livestock by ranchers of meshkinshahr. a sample of 120 farmers was selected by using proportional random sampling method. data were collected by means of a questionnaire. validity of questionnaire was determined through agricultural jihad ex...

Journal: :journal of ai and data mining 2015
f. tatari m. b. naghibi-sistani

in this paper, the optimal adaptive leader-follower consensus of linear continuous time multi-agent systems is considered. the error dynamics of each player depends on its neighbors’ information. detailed analysis of online optimal leader-follower consensus under known and unknown dynamics is presented. the introduced reinforcement learning-based algorithms learn online the approximate solution...

Journal: :iranian journal of nuclear medicine 2003
soraya shahhosseini davood beiki mohammad eftekhari

gamma-scintigraphy is applied extensively in the development and evaluation of pharmaceutical delivery systems, particularly for monitoring formulations in the gastrointestinal and respiratory tracts. the radiolabelling is generally achieved by the incorporation of an appropriate radionuclide such as technetium-99m or indium-111 into the formulation or by addition of a non-radioactive isotope s...

Journal: :international journal of nonlinear analysis and applications 2012
m. gil

we consider the coupled system$f(x,y)=g(x,y)=0$,where$$f(x, y)=bs 0 {m_1}   a_k(y)x^{m_1-k}mbox{ and } g(x, y)=bs 0 {m_2} b_k(y)x^{m_2-k}$$with entire functions $a_k(y), b_k(y)$.we    derive a priory estimates  for the sums of the rootsof the considered system andfor the counting function of  roots.

Journal: :iranian journal of management studies 2011
majid ramezan

while the growth of mis investment and its influence is making mis evaluation ever more indispensable, little attention has been paid to assessing and communicating system effectiveness. this paper attempts to empirically assess the effectiveness of integrated human resource information system in iranian oil industry. as suggested by recent research, the widely accepted is success model is ba...

Journal: :bulletin of the iranian mathematical society 2011
a. malek s. ezazipour n. hosseinipour-mahani

we establish a relationship between general constrained pseudoconvex optimization problems and globally projected dynamical systems. a corresponding novel neural network model, which is globally convergent and stable in the sense of lyapunov, is proposed. both theoretical and numerical approaches are considered. numerical simulations for three constrained nonlinear optimization problems a...

Journal: :thrita 0
amir hashemi meshkini department of pharmacoeconomics and pharmaceutical administration, faculty of pharmacy, tehran university of medical sciences, tehran, ir iran; non-communicable disease research center, endocrinology and metabolism research institute, tehran university of medical sciences, tehran, ir iran abbas kebriaeezadeh department of pharmacoeconomics and pharmaceutical administration, faculty of pharmacy, tehran university of medical sciences, tehran, ir iran mohammad reza janghorban the unit of map and gis, the office of statistics and data, qom provincial governance center, qom, ir iran khosro keshavarz department of pharmacoeconomics and pharmaceutical administration, faculty of pharmacy, tehran university of medical sciences, tehran, ir iran shekoufeh nikfar department of pharmacoeconomics and pharmaceutical administration, faculty of pharmacy, tehran university of medical sciences, tehran, ir iran; food and drug organization, ministry of health and medical education, tehran, ir iran; department of pharmacoeconomics and pharmaceutical administration, faculty of pharmacy, tehran university of medical sciences, 16th azar street, keshavarz blv, tehran, ir iran. tel/fax: +98-02188611883

conclusions geographic accessibility of pharmacies at night and on holidays has to be addressed by provincial health policymakers. materials and methods the analysis was based on straight-line distance measurements. we considered 150, 300, 450, 600, and 750 m for pedestrians, and 1, 2, and 3 km for driving accessibility as the acceptable distances. we calculated the number and percentage of hou...

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