نتایج جستجو برای: except for four indices
تعداد نتایج: 10529761 فیلتر نتایج به سال:
Nitrogen (N) is important for the growth of crops. Leaf nitrogen content (LNC) serves as a crucial indicator of the growth status of crops and can help determine the dose of N fertilizer. Laser-induced fluorescence (LIF) technology and the reflectance spectra of crops are widely used to detect the biochemical content of leaves. Many vegetation indices (VIs) and fluorescence parameters have been...
abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...
to explore the idea the investingation proposed, aimed at finding whether the performances of the population of iranians students studying english in an efl context are consistent in l1 and l2 writing taks and whether there is a cross-linguistic transfer in this respect. in this regard the subjects were instructed to write four compositions-two in english and two in farsi-which consisted of an ...
One of the most widely known topological index is the Wiener index. The Wiener Index Conjecture states that all positive integer numbers except a finite set are the Wiener indices of some trees. We explore the Wiener indices of the binary trees. We present efficient algorithms for generating the Wiener indices of the binary trees. Based on experiments we strengthen the conjecture for the class ...
Aims. The aim is to study the stellar content of the bar region to constrain its formation and evolution. Methods. Line-strength indices in the bar region of a sample of 6 barred galaxies were employed to derive age and metallicity gradients along the bars using stellar population models. Results. We find clear radial gradients in the line-strength indices for all the galaxies. We find positive...
the main purpose of this study was to investigate any relationship between high school efl teachers metaphorical understandings of their role in class and their self-efficacy beliefs. teachers metaphors were elicited through two different prompts: one picturing what they believed a language teacher should be like in class, and the other demonstrating what they are actually like in class; such...
Background and Aims: There is an increased risk of periodontal diseases in patients undergoing fixed orthodontic treatment. Chlorhexidine (CHX) is frequently used to promote oral hygiene; however, it is associated with several complications. Herbal mouthwashes can be used as the substitute without having similar complications. The aim the present study was to compare the effects of herbal mou...
An experiment was conducted to evaluate the effect of Ziziphus mucronata and Parkia biglobosa on haematological and biochemical indices of sheep. The experiment was carried out in a complete randomized block design. A total of 32 animals were used for the study with 16 animals per experiment. The animals were allotted to four dietary treatments with four animals per treatment. The results of th...
The community of endophytic fungi associated with Acer ginnala, a common tree in northeastern China, was investigated. Four media, PDA, Czapek's, WA and Sabouraud's, were used to inoculate explants from seeds, annual twigs and perennial twigs (xylem and bark). Media strongly affected the isolated species number, but not colonization frequency (CF) or isolation frequency (IF). To investigate med...
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