The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper addresses features of EMC which make it a particularly challenging modeling applications. These features include the very broadband nature of the interactions taking place thus encompassing regions of non-linearity and of uncertain parameter values; the inherent uncertainties in the geometrical configurations and dimensions of the multitude of components; and the ubiquitous presence of multi-scale...
Morphology of light absorbing layer is known to dictate the power conversion efficiency of organic photovoltaic (OPV) cell. The innovation of bulk heterojunction (BH) led to significant improvement for exciton harvesting, but carrier recombination at the distributed interfaces and variability of performance have been persistent concerns. The purpose of this paper is to theoretically explore the efficiency-space...
This paper focuses on modeling diffraction phenomenon and its influence on electromagnetic wave predictions in subterranean galleries. A new approach to modeling diffraction is briefly mentioned along with basic parameters used for modeling. In order to show the influence of diffraction phenomena on simulation results, two typical subterranean galleries (a single bending corridor and a more complex...
Functionally Graded Materials (FGMs) have been extensively studied in the past few decades. With increasingly powerful computers and highly precise measuring technologies, initial macro-scale volume fractions based FGM characterization has been extended to micro structural models, enabling more delicate and accurate description of FGMs in computer-aided design and analysis. This paper presents a new...
Hopper dredgers are massive ships that excavate sediments from the sea bottom while sailing. The excavated material is then transported and discharged at a specified location. The efficiency of this process is highly dependent on the detailed knowledge of the excavated soil. When the soil is composed mainly of sand, the parameter of the greatest importance is the average grain diameter. This, however...
The performance of a variable speed, direct-drive synchronous generator wind turbine concept is compared for two grades of electric steel applied for the generator stator core lamination. A ring type, radial flux permanent magnet synchronous generator (PMSG) is modelled. For a fixed mechanical power input, the geometry of the PMSG is optimized for each material to maximize the annual energy yield...
This paper proposes a minimally supervised method for acquiring high-level semantic relations such as causality and prevention from the Web. Our method learns linguistic patterns that express causality such as ??x gave rise to y??, and uses them to extract causal noun pairs like (global warming, malaria epidemic) from sentences like ??global warming gave rise to a new malaria epidemic??. The novelty...
This appendix introduces the proofs of Property 1 and 2 related to the discretization scheme; and a new compact kernel that we use throughout our method.
We show how to compute a minimal Riccati-balanced state map and a minimal Riccati-balanced state space representation starting from an image representation of a strictly dissipative system. The result is based on an iterative procedure to solve a generalization of the Nevanlinna interpolation problem.
The problem of navigation of the student over learning objects can be solved either by creating relations between learning objects or by using metadata of learning objects stored in concepts space of the domain. Every learning object has such defined metadata in a form of relation to several concepts. Concepts space contains information about structural and dependency relations between concepts. We...
The purpose of this paper is to present systemic creative product design methods based on user's life scenarios. Based on the nature of scenario and user's needs, combining with design principles and modeling activities in creative design process, this paper presented a solution to discovery user's needs from scenarios, and transfer these needs to structures, outlined a creative design model and some...
This paper is about the new theory and modeling framework about emergency information rapid release, we defined and analyzed the connotation and extension of emergency information release, provide a hierarchical workflow-organizing operating model, upon which established a mechanism based on workflow assembly. This paper introduced a new approach-the symbol matrix and arithmetic of symbol extracting...
Supplier evaluation and selection is one of the most critical activities of purchasing management in a supply chain. On the regular basis, managers constantly evaluate quality characteristics of suppliers' products and make decisions to select preferred suppliers. Fuzzy quality data commonly exists in the reality world. Under this fuzzy environment, we propose a quality-based supplier evaluation based...
With the market competition becoming increasingly fierce, metaphor is of vital significance to design as a ubiquitous way of emotion expression. Focused on the use of metaphorical symbol in modern furniture design from the perspective of product semantics, the paper analyzed concept, classification as well as features of metaphor design. By introducing metaphorical symbols, furniture design can not...
Concept design, which is currently quite fashionable, has almost permeated all areas of design, furniture design included certainly. Based on the principle of humanity and ecologization, this paper was mainly from the point of delight-orientation and personality to discuss the concept design of the furniture, in order to bring people a sophisticated living space, meeting their spiritual demands.
This paper investigates and analysis the psychological state and the basic physiological characteristics of children and analysis the situation of children's chair in the domestic and international market; illustrate the type and the advantage and disadvantage of children's chair by mixed forms, focus on the classification of famous foreign brand of children's chair and with this as the baseline of...
The paper established valuation methods of enterprises product image assets according to earnings present value methods of intangible assets valuation methods on condition that enterprises product image assets is intangible assets, The assets valuation methods of reverse calculation of the enterprise product image overcome the shortcomings of traditional assessment ideas.
Based on the dose distribution results under the condition of vertical incident beam by finite-size Pencil Beam (fsPB) matrix model using Monte Carlo simulation, this paper introduces the means of coordinate transformation, which can transform the dose distribution from the condition of vertical incident to the arbitrary collimator rotational angel. The dose distribution results of test examples are...
This paper presents a new model to image segmentation. We represent the object boundary by a partial differential equation model that is embedded in several scalar functions. The motion of the dynamic interface is governed by a p-Laplace equation. Such level set models are flexible in handling complex topological changes and are concise in extracting object boundaries despite of deep depression. Furthermore,...
Minimization of the operational costs, flexibility of the labor force and efficiency of all processes are increasingly important issues for every warehouse. Of all processes, order picking is recognized to be the most costly activity and therefore tends to get the most attention. Key objectives in designing an order picking operation include increases in productivity, reduction of cycle time, and...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.