نتایج جستجو برای: satisfactorily

تعداد نتایج: 7205  

1998
Jingde Cheng

Modeling epistemic processes in scientific discovery satisfactorily is an indispensable step to automating scientific discovery processes. This paper presents some significant fundamental observations and assumptions on scientific discovery processes and their automation at first. Based on the observations and assumptions, the paper shows why classical mathematical logic, its various classical ...

Journal: :CoRR 2016
Bijit Kumar Das Mrityunjoy Chakraborty

The sparsity-aware zero attractor least mean square (ZA-LMS) algorithm manifests much lower misadjustment in strongly sparse environment than its sparsity-agnostic counterpart, the least mean square (LMS), but is shown to perform worse than the LMS when sparsity of the impulse response decreases. The reweighted variant of the ZA-LMS, namely RZALMS shows robustness against this variation in spar...

Journal: :The British journal of ophthalmology 1978
D C Minassian B R Jones A Zargarizadeh

In a preliminary study involving 75 normal and 10 abnormal eyes the Arden grating acuity test was assessed under difficult conditions of rural field work. It was found to be adequately sensitive and specific for screening out individuals with visual impairment due to refractive errors or ocular disease, and to distinguish between these. Inexperienced paramedical personnel could carry out the te...

2016
Frank Tammo Wieringa Miriam Dahl Chhoun Chamnan Etienne Poirot Khov Kuong Prak Sophonneary Muth Sinuon Valerie Greuffeille Rathavuth Hong Jacques Berger Marjoleine Amma Dijkhuizen Arnaud Laillou

BACKGROUND Anemia is highly prevalent in Cambodian women and children, but data on causes of anemia are scarce. We performed a national micronutrient survey in children and women that was linked to the Cambodian Demographic Health Survey 2014 (CDHS-2014) to assess the prevalence of micronutrient deficiency, hemoglobin disorders and intestinal parasite infection. METHODS One-sixth of household...

Dongsheng Zhao, Li Li Ruixiang Bian Yaping Ding,

Pb and Cd in water samples were determined by cloud point extraction (CPE) with sodiumdiethyldithiocarbamate (DDTC) as the chelating agent and octylphenoxypolyethanl (Triton X-114) asthe surfactant prior to flame atomic absorption spectrometry (FAAS) determination. The main factorsof affecting the extraction and detection processes were optimized. The preconcentration of 10 mL ofstandard soluti...

Abbas ali Khodadadi, Amin Bazyari Mitra Bahri Negahdar Hosseinpour Yadollah Mortazavi

NaY zeolites with different framework Si/Al ratios were synthesized via hydrothermal technique. Structural characteristics of the synthesized zeolites were determined by using XRD, XRF, SEM, BET analyses. The effects of operating conditions of hydrothermal dealumination, i.e. time, temperature and partial pressure of water vapor on dealumination of the Y zeolites framework and their structure w...

A. Ebrahimi H. Aghaie M. Aghaie

Using Solvent Evaporating and Atomic Emission Spectrophotometric methods, the solubility of Ba (NO3 )2 inwater at 25.0 ° C was determined. Activity coefficients, f+ and f_ of Bat) and N0i(aq) ions in the saturatedsolution at 25.0 ° C were estimated upon the extended Debye —Hiickel theory and then, the constantK'sp =[Ba2+1f+ [NO-3 ]2 f 2 was evaluated. Comparing the value of thermodynamic solubi...

ساکنیان دهکردی, نادر , قبادیان, برات, مینایی, سعید ,

A suitable instrument capable of inserting mulch into soil is needed to improve soil water holding capacity. The goal of this research is to design and manufacture an instrument with a blade and mechanism that can insert rice mulch into the soil. All the parameters in sub-soiling operation were taken into account, and the technique presented can be recommended as a special method of injecting r...

Journal: :فرآوری و نگهداری مواد غذایی 0

in this research the thin layer drying behavior of apricot (cv. ghavami and nasiry) at temperatures of drying air of 40, 50, 60 and 70 ºc and at drying air velocity of 2 ms-1 was studied. in order to select the best drying curve equation, 9 different thin layer drying models were fitted to the experimental data and were compared according to their coefficient of determination (r2), reduced chi-...

Journal: :journal of physical & theoretical chemistry 2007
m. aghaie b.sh. broojeni

using solvent evaporating and atomic emission spectrophotometric methods, the solubility of li2co3 in waterat 25°c was determined. comparing the value of thermodynamic solubility product constant, ksp(th),(ksp(tn) = exp(—ag.ss/rt)) of the mentioned salt to the value which is obtained from the observed solubility,shnoll-1 , and activity coefficients, f+ and f, which are estimated upon the extend...

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