A Hierarchical Modeling Framework for Cyber-Physical Micro Energy Grid System

This paper proposes a hierarchical modeling framework for micro energy grid (MEG) from the perspective of cyber-physical integration, including three layers: object layer, integration layer and decision layer. This modeling framework can fully reveal the interplay of the information flow and energy flow in MEG. The energy hub approach is used to uniformly describe the conversion and distribution of different energy sources in the object layer. The state machine is used to describe the characteristics of energy flow and information flow and their dynamic relationships in the integration layer, where the energy flow describes the dynamic balance of energy between the supply side and demand side and the energy changes of each unit in MEG, and the information flow describes the transferring process of each unit’s operating state and the conditions triggering the state transformation. The optimization objective of the decision layer is established based on the actual requirements with optimal operation. The combination of the three-layer model forms the overall model of the MEG. Finally, a typical MEG system is taken as an example to verify the proposed modeling approach, and the results show that the proposed modeling method effectively improves the observability and optimal operation of the MEG.

Nilai Moral dalam Serat Panitibaya

ABSTRACT Panitibaya fiber is one of the piwulang Javanese texts that needs to be preserved because the teachings contained in it are still very beneficial for the community. For that Panitibaya Fiber will be examined on (1) how the sound layer in Panitibaya Fiber, (2) how the meaning layer in Panitibaya Fiber, (3) how the object layer in Panitbaya Fiber, (4) Moral Value in Panitibaya Fiber. This study uses a literary sociology approach according to Ian Watt. The research method used is descriptive qualitative. The data used in this study is the text of the Fiber Panitibaya written by Bathara Katong. Data collection techniques in this study were heuristic and hermeneutic reading methods. The analysis technique uses an analysis of the building blocks of poetry Roman Ingarden which includes sound layers, meaning layers, object layers. From the data, it was analyzed using Ian Watt's sociology theory of literature to find out the teachings contained in Panitibaya Fiber. The results of this study indicate that the existence of sound layers, layers of meaning and layers of objects, as well as moral values ​​contained in the Panitibaya Fiber for pursuing are summarized as eleven teachings as follows, (1) obligations to the Creator, (2) disgraceful qualities that must be shunned, (3) commendable traits, (4) actions that are not justified for men, (5) attitudes that must be considered in speech, (6) ancestral messages, (7) people who are not approachable, (8) actions related to children, (9) actions related to firearms, (10) there are visits and neighbors, and (11) attitude in handling a job. The teachings of the Panitibaya Fiber need to be disseminated in the Javanese community, either through print media or online media. Keywords: Panitibaya Fiber, Prohibition of pursuing life, Sociology of literature.

High resolution remote sensing image segmentation based on graph theory and fractal net evolution approach

Image segmentation is the foundation of further object-oriented image analysis, understanding and recognition. It is one of the key technologies in high resolution remote sensing applications. In this paper, a new fast image segmentation algorithm for high resolution remote sensing imagery is proposed, which is based on graph theory and fractal net evolution approach (FNEA). Firstly, an image is modelled as a weighted undirected graph, where nodes correspond to pixels, and edges connect adjacent pixels. An initial object layer can be obtained efficiently from graph-based segmentation, which runs in time nearly linear in the number of image pixels. Then FNEA starts with the initial object layer and a pairwise merge of its neighbour object with the aim to minimize the resulting summed heterogeneity. Furthermore, according to the character of different features in high resolution remote sensing image, three different merging criterions for image objects based on spectral and spatial information are adopted. Finally, compared with the commercial remote sensing software eCognition, the experimental results demonstrate that the efficiency of the algorithm has significantly improved, and the result can maintain good feature boundaries.

Experimental Investigation of Selective Laser Melting of Lunar Regolith for In-Situ Applications

Selective Laser Melting (SLM) is a powder based Additive manufacturing (AM) technology which builds an object layer wise using a laser beam to melt the powder on an elevated platform. Thus far numerous studies have investigated lunar manufacturing methods and construction but little is known about applicability of SLM of lunar regolith. As most lunar construction proposals require transportation of essential materials from Earth, using an in-situ manufacturing method with indigenous material would be considerably more economical. Fabrication of parts with SLM using various metals and ceramics has already been presented. As such, the feasibility of using lunar regolith mixture to create functional parts with SLM process is investigated. Variation of process parameters such as laser power, scan speed, and scan strategies is investigated and multiple 3D objects are successfully created and presented.

3D Printing: Basic Concepts Mathematics and Technologies

3D printing is about being able to print any object layer by layer. But if one questions this proposition, can one find any three-dimensional objects that can't be printed layer by layer? To banish any disbeliefs the authors walked together through the mathematics that prove 3d printing is feasible for any real life object. 3d printers create three-dimensional objects by building them up layer by layer. The current generation of 3d printers typically requires input from a CAD program in the form of an STL file, which defines a shape by a list of triangle vertices. The vast majority of 3d printers use two techniques, FDM (Fused Deposition Modelling) and PBP (Powder Binder Printing). One advanced form of 3d printing that has been an area of increasing scientific interest the recent years is bioprinting. Cell printers utilizing techniques similar to FDM were developed for bioprinting. These printers give us the ability to place cells in positions that mimic their respective positions in organs. Finally, through a series of case studies the authors show that 3d printers have made a massive breakthrough in medicine lately.

A 3D Pseudo-Reconstruction from Single ImageBased on Vanishing Point

A 3D (three-dimensional) pseudo-reconstruction method from a single image is presented as a novel approach reconstructing a 3D model with no prior internal knowledge of outdoors image. In the proposed method, an image is represented as a collection of sky layer, ground layer, and object layer. A visual radical coordinate system with vanishing point is established to accommodate the extracted 3D data from images. Learning method is done via the layers database. The experiment results show that the visually acceptable 3D model can be extracted less than one minute. That means a higher resolution in much shorter time, compared to conventional methods. This method can be applied to computer games, industrial measurement, archeology, architecture and visual realities.