نتایج جستجو برای: cobweb models
تعداد نتایج: 908197 فیلتر نتایج به سال:
In this paper, we describe our research in unsupervised image segmentation using machine learning techniques. First, we apply image processing techniques to extract from an image a set of training cases, which are histogram peaks described by their intensity ranges, and to compute spatial and textural attributes as visual cues. Second, we use learning by discovery methodologies to cluster these...
This study investigates the effects of dynamic-price retail contracting on end-to-end power system operations. Performance is evaluated by means of carefully defined metrics for system stability, market efficiency, and market participant welfare. The study is carried out for an Integrated Retail and Wholesale (IRW) Test Case for which households have smart (price-responsive) air-conditioning (A...
Many spiders depend upon webs to capture prey. Web function results from architecture and mechanical performance of the silk. We hypothesized that the common house spider, Achaearanea tepidariorum, would alter the mechanical performance of its cobweb in response to different prey by varying the structural and material properties of its silk. We fed spiders either large, high kinetic energy cric...
Tulisan ini bertujuan untuk menganalisis ketergantungan Laos terhadap China dalam ekonomi dan pembangunan, yang menjadi hambatan bagi terlaksananya reduce inequality sebagai salah satu program Suistainable Development Goals (SDGs). Metode penelitian digunakan adalah metode kualitatif, serta menggunakan pendekatan teori cobweb model alat analisis. Hasil menunjukkan bahwa menyebabkan utang luar n...
Examining concepts that change over time has been an active area of research within data mining. This paper presents a new method that functions in contexts where concept drift is present, while also allowing for modification of the instances themselves as they change over time. This method is well suited to domains where subjects of interest are sampled multiple times, and where they may migra...
In this study, we introduce CobWeb 1.0 which is a graphical user interface tailored explicitly for accurate image segmentation and representative elementary volume analysis of digital rock images derived from high resolution tomography. The CobWeb code is a work package deployed as a series of windows executable binaries which use image processing and machine learning libraries of MATLAB. The u...
We present high resolution (sub)mm continuum maps obtained with the bolometer UKT14 on the JCMT of the high mass star formation complex NGC 6334 I and I(N), the latter also known as Gezari’s cold source (Gezari 1982). The maps at 1.1 mm and 800 μm cover the whole northern part of the NGC 6334 complex (∼ 5′ × 8′), while the coverage is more limited at 450 μm and 350 μm and centered on NGC 6334 I...
Convergent Demographic Effects of Insect Attack on Related Thistles in Coastal Vs. Continental Dunes
Insect herbivory is common, but the conditions under which it reduces the fitness and population size of plants remain poorly understood. We quantified populationlevel impacts of floral herbivory by specialized insects on cobweb thistle (Cirsium occidentale var. occidentale) in a California coastal dune ecosystem, and then compared these demographic effects to those published for Platte thistle...
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