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Video Game Telemetry as a Critical Tool in the Study of Complex Skill Learning  [PDF]
Joseph J. Thompson, Mark R. Blair, Lihan Chen, Andrew J. Henrey
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0075129
Abstract: Cognitive science has long shown interest in expertise, in part because prediction and control of expert development would have immense practical value. Most studies in this area investigate expertise by comparing experts with novices. The reliance on contrastive samples in studies of human expertise only yields deep insight into development where differences are important throughout skill acquisition. This reliance may be pernicious where the predictive importance of variables is not constant across levels of expertise. Before the development of sophisticated machine learning tools for data mining larger samples, and indeed, before such samples were available, it was difficult to test the implicit assumption of static variable importance in expertise development. To investigate if this reliance may have imposed critical restrictions on the understanding of complex skill development, we adopted an alternative method, the online acquisition of telemetry data from a common daily activity for many: video gaming. Using measures of cognitive-motor, attentional, and perceptual processing extracted from game data from 3360 Real-Time Strategy players at 7 different levels of expertise, we identified 12 variables relevant to expertise. We show that the static variable importance assumption is false - the predictive importance of these variables shifted as the levels of expertise increased - and, at least in our dataset, that a contrastive approach would have been misleading. The finding that variable importance is not static across levels of expertise suggests that large, diverse datasets of sustained cognitive-motor performance are crucial for an understanding of expertise in real-world contexts. We also identify plausible cognitive markers of expertise.
Nanotechnology as a Novel Tool in Fisheries and Aquaculture Development: A Review  [PDF]
Mohd Ashraf,Md. Aklakur,Rupam Sharma,Shabir Ahmad
Iranica Journal of Energy and Environment (IJEE) , 2011,
Abstract: Application of nanotechnology has revolutionized many frontier areas; it is paving a way for the researchers for possible application in all sectors. Nanotechnology holds promise for various aspects of fisheries and aquaculture development, like fish health management, fish breeding, aquatic environment management and other areas. Nanotechnological intervention will help to meet the global challenges associated with aquatic organism production, including environmental sustainability, human health, disease control and food security. This aspect of aquaculture and Fisheries is still in infancy and require attention of the scientific fraternity for its widespread use to harness its potential benefit. In the present paper a review on the application of nanotechnology in fisheries and aquaculture is presented.
Research Progress in Biological Package for Aquaculture Wastewater Treatment  [cached]
Xi-dong MU,Yin-chang Hu,Guang-jun Wang,Jun Chen
Journal of Agricultural Science , 2010, DOI: 10.5539/jas.v2n2p210
Abstract: The classification of biological package was reviewed in the present paper, and the application status of various fillers for aquaculture wastewater treatment was introduced in detail. The developing direction of biological package in the field of aquaculture wastewater treatment was also presented.
Research of efficient underwater video coding method for underwater robots
水下机器人视频图像高效压缩方法研究

LI Qing-zhong,WANG Bing,
李庆忠
,王冰

热带海洋学报 , 2009,
Abstract: Underwater video compression is one of the key technologies for transmitting massive amount of real-time video data via underwater acoustic channels with limited bandwidth.The authors first describe the major problems involved in the development of underwater robots and underwater video compression,then comprehensively analyze the characteristics of several efficient video-coding methods,and finally discuss the future research directions.According to the characteristics of underwater imaging,they propose a ...
Research of Virtual Channels Scheduling Algorithm Based on Priority in Packet Telemetry System  [cached]
TIAN Ye,ZHANG Zi-jing,ZHANG Yan-qin,XIAO Guang-yuan
International Journal of Wireless and Microwave Technologies , 2012, DOI: 10.5815/ijwmt.2012.02.09
Abstract: Consultive Committee for Space Data Systems has designed a group of space communication standards since it is established in 1982, which are now widely used in more than 250 countries and regions[1][2]. Among these standards, TM Space Data Link protocol is a data communication and transmission protocol, which is mainly used in packet telemetry system to transmit packet telemetry data from space to ground[3][4]. In order to better transmit those information, virtual channels scheduling mechanism is widely used in packet telemetry system.Virtual Channels are a group of logic channels formed by dividing the physical channel by time slots. Each virtual channel transmits the packets information with the same or similar service demands, and the physical channel is shared by all these virtual channels. The algorithm used in virtual channels mechanism, namely, virtual channels scheduling algorithm, determines the sequence of occupying the physical channel by each virtual channel, which has a great effect on the transmission efficiency. In this paper, we study the virtual channels scheduling algorithm based on priority in packet telemetry system, and find an interesting conclusion: when the running time of the scheduling module is long enough, for the VC with the highest priority, both the probability of occupying the physical (namely, the VC with the highest priority is scheduled) and the packetslosing rate converge on fixed values, which can provide reference for engineering design.
LAPM: a tool for underwater Large-Area Photo-Mosaicking
Y. Marcon,H. Sahling,G. Bohrmann
Geoscientific Instrumentation, Methods and Data Systems Discussions , 2013, DOI: 10.5194/gid-3-127-2013
Abstract: This paper presents a new tool for large-area photo-mosaicking (LAPM tool). This tool was developed specifically for the purpose of underwater mosaicking, and it is aimed at providing end-user scientists with an easy and robust way to construct large photo-mosaics from any set of images. It is notably capable of constructing mosaics with unlimited amount of images and on any recent computer. The mosaicking process can rely on both feature matching and navigation data. This is complemented by an intuitive graphical user interface, which gives the user full control over the feature matches between any pair of overlapping images. Finally, mosaic files are given geographic attributes that allow direct import into ArcGIS. So far, the LAPM tool was successfully used to construct geo-referenced photo-mosaics with photo and video material from several scientific cruises. The largest photo-mosaic contained more than 5000 images for a total area of about 105 000 m2.
Development of Data Simulation and Processing GUI for Underwater Applications Using PCI Add-On Card  [PDF]
Ramu Korukonda,K J Sreeja
International Journal of Soft Computing & Engineering , 2012,
Abstract: In application areas like data decoding, analog signal processing, telemetry, underwater vehicles etc, monitoring of analog and digital signals of various subsystems and mission parameters is very essential. Especially in the case of underwater vehicles, the performance evaluation is done offline because it is not possible to transmit data from vehicle either by cable or wireless. This calls for the onboard recording system to record different parameters and download those parameters for offline analysis. Parameters like navigation, control and target parameters should be transferred between vehicle and mothership for successful run, this is accomplished via surface, acoustic and fibre optic modem’s depending on the conditions. This paper provides an overview of the development of an interactive simulation system and Graphical User Interface (GUI) for an underwater robotic vehicle. Computer simulations and graphical interfaces are effective ways for studying the behaviour of a system well before it is developed and deployed. It allows lot of flexibility in the design and greater scope for improvement without major financial commitments. The underwater vehicle and its sub-system properties, control inputs (parameter adjustments, maneuvers, etc), and the underwater environment are graphically represented on an user interface that can be easily accessed by the user for offline analysis and for further modifications.
The Underwater Historical Cultural Heritage of Russia Research and Preservation  [cached]
Serguei Fazlullin
Journal of Cultural Research , 2012,
Abstract: he author analyses the current state of affairs in the study and preservation of the underwater historical and cultural heritage in the Russian Federation and proposes recommendations for harmonising attitudes of the society and the State towards objects of the underwater historical and cultural heritage and rising public awareness.
Underwater landscapes: unrecognized cultural heritage and research resource  [cached]
Ole Gron
Archaeology International , 2004, DOI: 10.5334/ai.0806
Abstract: Maritime archaeologists have until recently focused on the excavation of sites on land, but advances in underwater techniques of survey and excavation now allow direct investigation of submerged sites and even landscapes, where preservation, especially of organic remains, is often better than in land sites. The potential importance of underwater archaeology is demonstrated by recent research on submerged Mesolithic sites in Denmark.
Research on China's Aquaculture Efficiency Evaluation and Influencing Factors with Undesirable Outputs Research on China's Aquaculture Efficiency Evaluation and Influencing Factors with Undesirable Outputs  [PDF]
JI Jianyue,WANG Pingping
- , 2015,
Abstract: Taking the aquaculture area, the number of farming boats and that of aquaculturist as input variables, the aquaculture production as desirable output variable and polluted economic loss as undesirable output variable, this paper conducts SBM model to evaluate the aquaculture efficiency based on the data of 16 aquaculture-developed provinces in China from 2004 to 2011. The results show the efficiency in China has not changed much in recent years with the efficiency values mainly between 0.39 and 0.53, and the efficiency of marine-aquaculture-dominated provinces is generally higher than that of freshwater-aquaculture-dominated ones. To analyze the difference under the efficiency, the panel Tobit model is used with education level factor, training factor, technology extension factor, technical level factor, scale factor and species factor as the efficiency influencing factors. The results show that technology extension factor and technical level factor have significant positive influence
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