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Microkernel and Middle-Ware Based GIS Platform Design  [PDF]
Tingyan Xing, Shang Zhang, Fan Zhang
Positioning (POS) , 2014, DOI: 10.4236/pos.2014.52007
Abstract: By contrasting the traditional way in which GIS was completed that comes with less flexible, low efficiency, and lack redundancy which cause high entry cost, the fast development of microkernel plug-in technology provides the lightweight, efficient and scalable solution to Geographical Information System (GIS). This paper is to reveal the potential of microkernel plug-in geospatial information processing technology in GIS design and practice, with the acceptance and usage of function model called Resource loading manager(RLM) for GIS applications, which provides a possible solution to overcome the GIS’s high cost issue. After the short review of microkernel plug-in technology, the possibility of GIS design with microkernel is analyzed. This paper also introduced the composition of the whole system and the design of GIS service platform based on middle-ware in detail.
Piezoresistive Pressure Sensor Design, Simulation and Modification using Coventor Ware Software  [PDF]
J.O. Dennis,M.S.B. Mat Sihat,A. Yousif Ahmed,Farooq Ahmad
Journal of Applied Sciences , 2011,
Abstract: In this study, the properties of a modified MEMS Piezoresistive (PZR) Pressure Sensor device is investigated. The wheatstone bridge circuit configuration is used to arrange the implanted piezoresistors to measure small resistance change. In the methodology of the study CoventorWare simulation software is used to design and simulate the existing pressure sensor. Modification to improve the pressure sensors output was then made to the design. The modification made involved the incorporation of additional resistors in parallel with the existing resistors forming the Wheatstone bridge making them eight implanted resistors in all instead of four. Results showed that the modified sensor gives a lower output voltage when the x and y edge offsets are varied with a maximum output voltage of 96 mV compare to the typical sensor maximum output voltage of 185 mV. It also has a wider dynamic range from 0 to 9.5 MPa for pressure measurement as compared to the typical sensor, which has a range from 0 to 4.0 MPa.
Object Oriented Design Security Quantification  [cached]
Suhel Ahmad Khan
Journal of Global Research in Computer Science , 2011,
Abstract: Quantification of security at early phase produces a significant improvement to understand the management of security artifacts for best possible results. The proposed study discusses a systematic approach to quantify security based on complexity factors which having impact on security attributes. This paper provides a road-map to researchers and software practitioner to assess, and preferably, quantify software security in design phase. A security assessment through complexity framework (SVDF) has been proposed in order to incorporate security to develop quality products. It may be used to benchmark software products according to their severity.
Scalable Approach to Uncertainty Quantification and Robust Design of Interconnected Dynamical Systems  [PDF]
Andrzej Banaszuk,Vladimir A. Fonoberov,Thomas A. Frewen,Marin Kobilarov,George Mathew,Igor Mezic,Alessandro Pinto,Tuhin Sahai,Harshad Sane,Alberto Speranzon,Amit Surana
Computer Science , 2011,
Abstract: Development of robust dynamical systems and networks such as autonomous aircraft systems capable of accomplishing complex missions faces challenges due to the dynamically evolving uncertainties coming from model uncertainties, necessity to operate in a hostile cluttered urban environment, and the distributed and dynamic nature of the communication and computation resources. Model-based robust design is difficult because of the complexity of the hybrid dynamic models including continuous vehicle dynamics, the discrete models of computations and communications, and the size of the problem. We will overview recent advances in methodology and tools to model, analyze, and design robust autonomous aerospace systems operating in uncertain environment, with stress on efficient uncertainty quantification and robust design using the case studies of the mission including model-based target tracking and search, and trajectory planning in uncertain urban environment. To show that the methodology is generally applicable to uncertain dynamical systems, we will also show examples of application of the new methods to efficient uncertainty quantification of energy usage in buildings, and stability assessment of interconnected power networks.
Optimal Design of Intervention Studies to Prevent Influenza in Healthy Cohorts  [PDF]
Brendan Klick, Hiroshi Nishiura, Benjamin J. Cowling
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0035166
Abstract: Background Influenza cohort studies, in which participants are monitored for infection over an epidemic period, are invaluable in assessing the effectiveness of control measures such as vaccination, antiviral prophylaxis and non-pharmaceutical interventions (NPIs). Influenza infections and illnesses can be identified through a number of approaches with different costs and logistical requirements. Methodology and Principal Findings In the context of a randomized controlled trial of an NPI with a constrained budget, we used a simulation approach to examine which approaches to measuring outcomes could provide greater statistical power to identify an effective intervention against confirmed influenza. We found that for a short epidemic season, the optimal design was to collect respiratory specimens at biweekly intervals, as well as following report of acute respiratory illness (ARI), for virologic testing by reverse transcription polymerase chain reaction (RT-PCR). Collection of respiratory specimens only from individuals reporting ARI was also an efficient design particularly for studies in settings with longer periods of influenza activity. Collection of specimens only from individuals reporting a febrile ARI was less efficient. Collection and testing of sera before and after influenza activity appeared to be inferior to collection of respiratory specimens for RT-PCR confirmation of acute infections. The performance of RT-PCR was robust to uncertainty in the costs and diagnostic performance of RT-PCR and serological tests. Conclusions and Significance Our results suggest that unless the sensitivity or specificity of serology can be increased RT-PCR will remain as the preferable outcome measure in NPI studies. Routine collection of specimens for RT-PCR testing even when study participants do not report acute respiratory illness appears to be the most cost efficient design under most scenarios.
Internet ware cloud computing :Challenges  [PDF]
S Qamar,Niranjan Lal,Mrityunjay Singh
Computer Science , 2010,
Abstract: After decades of engineering development and infrastructural investment, Internet connections have become commodity product in many countries, and Internet scale "cloud computing" has started to compete with traditional software business through its technological advantages and economy of scale. Cloud computing is a promising enabling technology of Internet ware Cloud Computing is termed as the next big thing in the modern corporate world. Apart from the present day software and technologies, cloud computing will have a growing impact on enterprise IT and business activities in many large organizations. This paper provides an insight to cloud computing, its impacts and discusses various issues that business organizations face while implementing cloud computing. Further, it recommends various strategies that organizations need to adopt while migrating to cloud computing. The purpose of this paper is to develop an understanding of cloud computing in the modern world and its impact on organizations and businesses. Initially the paper provides a brief description of the cloud computing model introduction and its purposes. Further it discusses various technical and non-technical issues that need to be overcome in order for the benefits of cloud computing to be realized in corporate businesses and organizations. It then provides various recommendations and strategies that businesses need to work on before stepping into new technologies.
Towards a Communication System as Hyper-ware  [PDF]
N. Ghoualmi-Zine,A. Araar
Information Technology Journal , 2005,
Abstract: We target the conception of a hyper-ware, which could be the futur of middelware. The presented model is inspired from hypermedia model. The objective of the hyper-ware is the integration of all information systems. It not depends on the organization. Hyper-ware disturbs neither existing application nor their local behaviour. It presents no limits of flexibility and adaptability for specific needs. The tasks are executed through communication networks composed of networked modules represented by a pieces of code belonging to information systems. An architecture separating the tasks, the communication networks and the communicant entities, assures a degree of a very high adaptability also coherence and integrity. This model is inspired from hypermedia model and conception of hypermedia could be the future of midleware.
Chip-Oriented Fluorimeter Design and Detection System Development for DNA Quantification in Nano-Liter Volumes  [PDF]
Da-Sheng Lee,Ming-Hui Chen
Sensors , 2010, DOI: 10.3390/s100100146
Abstract: The chip-based polymerase chain reaction (PCR) system has been developed in recent years to achieve DNA quantification. Using a microstructure and miniature chip, the volume consumption for a PCR can be reduced to a nano-liter. With high speed cycling and a low reaction volume, the time consumption of one PCR cycle performed on a chip can be reduced. However, most of the presented prototypes employ commercial fluorimeters which are not optimized for fluorescence detection of such a small quantity sample. This limits the performance of DNA quantification, especially low experiment reproducibility. This study discusses the concept of a chip-oriented fluorimeter design. Using the analytical model, the current study analyzes the sensitivity and dynamic range of the fluorimeter to fit the requirements for detecting fluorescence in nano-liter volumes. Through the optimized processes, a real-time PCR on a chip system with only one nano-liter volume test sample is as sensitive as the commercial real-time PCR machine using the sample with twenty micro-liter volumes. The signal to noise (S/N) ratio of a chip system for DNA quantification with hepatitis B virus (HBV) plasmid samples is 3 dB higher. DNA quantification by the miniature chip shows higher reproducibility compared to the commercial machine with respect to samples of initial concentrations from 103 to 105 copies per reaction.
A Novel Implementation of ARM based Design of Firewall to prevent SYN Flood Attack
P.Usha Rani#1 , D.Vara Prasada Rao*2
International Journal of Computer Trends and Technology , 2011,
Abstract: Denial of service attacks prevents legitimate users from using a service. One particular type of this attack is known as SYN flood, where external hosts attempt to overwhelm the server machine by sending a constant stream of TCP connection request. There are several approaches for dealing with this attack that firewall is one of them. In this paper we attempt to prevent this type of attacks with iptables firewalls. Any Firewall prevents unauthorized use and access to your device, its job is to carefully analyze data entering and exiting the device based onuser configurations and ignore information that comes from suspicious locations. The firewalls available in the market are general purpose and not suitable to the Embedded boards. Hence I developed and implemented a firewall for an ARM9 processor which uses Linux as the operating system. The Firewall design used Net filters concept in Linux for an ARM9 processor. After implementing the firewall, experimentation was done to study the extent to which the firewall can prevent the securing attacks especially SYN flood attack. Packet filtering concept is used to examine the header of a packet to determine the source and the destination. This information is compared to a set of predefined or user-created rules that determine whether the packet is to be forwarded or dropped. Hence it is established in this paper by implementing the firewall based on Iptables rules one can avoid SYN flood attacks from ARM Board.
Discussion on the Reinforcement Technology of the Fragile Bronze Ware Unearthed in the Archaeological Process  [PDF]
Xingang Tan
Archaeological Discovery (AD) , 2018, DOI: 10.4236/ad.2018.63010
Abstract: During the archaeological excavation process, the reinforcement of the unearthed fragile bronze ware concerns the long-term preservation and subsequent protection of the bronze wares. Therefore, the reinforcement technology must be scientific, safe and effective. Starting from the protection and restoration work of the fragile bronze ware unearthed at the excavation site, this paper first introduces the background of bronze ware, and then introduces the characteristics of vulnerable bronze ware. Finally, from the point of protection of fragile bronze ware, this paper studies the related reinforcement technologies in order to provide reference for the protection and restoration of archaeological excavation culture.
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