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2005

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Corrosion Behavior Of Sml, Erw Pipeline Steels Exposed To Seamud, Wei Hua, Xiu-Tong Wang, Rong-Jie Gao, Yan Li Aug 2005

Corrosion Behavior Of Sml, Erw Pipeline Steels Exposed To Seamud, Wei Hua, Xiu-Tong Wang, Rong-Jie Gao, Yan Li

Journal of Electrochemistry

The corrosion behavior of API Spec X60 pipeline steels, including electric resistance welding(ERW) and Seamless (SML) types, in sea mud gathered fromYangtse River estuaryof the East China Sea was investigatedthrough linear polarization resistance, potentio-dynamic polarizationand electrochemical impedance measurements. The result indicate the improved corrosion resistance of SML in sea mud. The oxygen diffusion in the cathode zone determines the corrosion behavior of pipeline steel in sea mud.

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Investigation, On The Accelerated Dissolution Of Metal Induced By Afm Tip Scratching And Suppressed By Inhibitors, Jun-E Qu, Xing-Peng Guo Aug 2005

Investigation, On The Accelerated Dissolution Of Metal Induced By Afm Tip Scratching And Suppressed By Inhibitors, Jun-E Qu, Xing-Peng Guo

Journal of Electrochemistry

The accelerated dissolution behavior of Cu-Ni alloy induced by AFM tip scratching and the inhibition effect of corrosion inhibitors were investigated. The results showedthat, with a tip loading of 750nN, continuous scan for 30 min in a contact mode on 4×4 μm2 of copper-nickel alloy in 1.5mol/L NaCl and 0.01mol/L HCl could enhance the dissolution of the sample and produced pits on the scratched area. Adding inorganic inhibitors, sodium chromateand organic inhibitor dodecylamine, to the solution suppressed the dissolution of copper-nickel alloyinduced by tip scratching, respectively, by improving the surface passivationperformance of metal surface and forming adsorption films on …

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Study On The Adsortion Property Of Mdopd On Q235 Steel, Jin-Ying Huang, Jia-Shen Zheng Aug 2005

Study On The Adsortion Property Of Mdopd On Q235 Steel, Jin-Ying Huang, Jia-Shen Zheng

Journal of Electrochemistry

The weight loss measurement, potentiodynamic polarisation curves, Electrochemical Impedance Spectroscopy and Atomic Force Microscopy were used to evaluate the corrosion inhibition performance of MDOPD in simulated oilfield water. At the same time, the adsorption mechanism of MDOPD on Q235 steels was suggested. The experimental results show the effective corrosion inhibition in the simulated oilfield water. The MDOPD possessesseveral nitrogen atoms as adsorption centres, which has higher active energy at metal surface and has more effective protection function.

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Electrocatalytic Oxidation And Degration Of Active Red X-3b By Nanotubes Catalytic Electrodes, Yi Wen, Jian-Hui Fang, Wei-Min Cao, Li-Yi Shi Aug 2005

Electrocatalytic Oxidation And Degration Of Active Red X-3b By Nanotubes Catalytic Electrodes, Yi Wen, Jian-Hui Fang, Wei-Min Cao, Li-Yi Shi

Journal of Electrochemistry

The catalytic splitting decomposition of carbon nanotubes isprocessed by dispersing with dilute nitric acid and thermal oxidation. Then well-proportionedphenolic resin is mixed in the carbon nanotubes. Then, the carbon nanotubesare made into electrodes by hot-press molding after the process of milling with high speed. The surface of the carbon nanotubes electrodes is analyzed by SEM. Active red X-3B simulated waster water is disposed by carbon nanotubes catalyticelectrode (anode) and stainless steel(cathode). The influencing factors of degradation by current density, concentrationof electrolyte, systemtemperature and pH are investigated. The experimental results indicated that acidiccondition is propitious tothe degradationreaction of organicdyestuff and wastewater …

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Effect Of Chloride Ions On The Corrosion Behavior Of Reinforcing Steel In Simulated Concrete Pore Solutions, Yu Liu, Rong-Gui Du, Chang-Jian Lin Aug 2005

Effect Of Chloride Ions On The Corrosion Behavior Of Reinforcing Steel In Simulated Concrete Pore Solutions, Yu Liu, Rong-Gui Du, Chang-Jian Lin

Journal of Electrochemistry

The potentiodynamic anodic polarization was used to study the corrosion behavior of the reinforcing steel in simulated concrete pore solutions with different pH and chloride ion concentrations. The effect of chloride ions on passivity breakdown of the steel was examined by measuring the breaking potentials of reinforcing steel, and the critical chloride concentrations for depassivation were found in simulated concrete pore solutions at pH 12.50 and pH 12.00.

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Electrochemical Reduction Characteristics Of Nitrobenzene At The Copper Electrode, Jin-Hong Fan, Wen-Ying Xu, Ting-Yao Gao Aug 2005

Electrochemical Reduction Characteristics Of Nitrobenzene At The Copper Electrode, Jin-Hong Fan, Wen-Ying Xu, Ting-Yao Gao

Journal of Electrochemistry

The electrochemical reduction characteristics and transition steps of nitrobenzene aqueous solution at the copper electrode, as well as its reduction mechanism were extensively investigatedby using the techniques such as cyclic voltammetry (CV) and linear scan voltammetry (LSV). The results showed that the reduction peaks of nitrobenzene at the copper electrode were located at 0.58 V and 1.32 V or so (vs. SCE), both acidity and alkalinesolutionsfavoredthe reduction of nitrobenzene. The adsorption of compounds followed by the reduction process, which is controlled by the mass transfer step at higher nitrobenzene concentration. In addition, the higher anaerobic degree led to faster reduction …

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5th Asian Conference On Electrochemistry, Acec2005 Held In Shanghai, Editorial Office Of J.Electrochem. Aug 2005

5th Asian Conference On Electrochemistry, Acec2005 Held In Shanghai, Editorial Office Of J.Electrochem.

Journal of Electrochemistry

No abstract provided.

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Tcp Attack Analysis On Packets Captured Using Symantec Decoy Server, Ali Bakhtiar Nizamani, Bahari Belaton Aug 2005

Tcp Attack Analysis On Packets Captured Using Symantec Decoy Server, Ali Bakhtiar Nizamani, Bahari Belaton

International Conference on Information and Communication Technologies

This paper discusses results obtained from Symantec Decoy Server (previously known as Mantrap) with an introduction to honeypots. Lance Spitzner of the Honeynet Project introduced the concept of honeypots. A honeypot is in essence a decoy server, which has no real or strategic value and is only setup to attract crackers towards it. The idea is to trap the crackers and learn cracking techniques from them. Rapid increase in unauthorized intrusions over the Internet provides a great motivation to explore honeypots at a greater depth. We will provide analysis on TCP based denial of service attack carried out on Symantec …

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A New Approach For Anti-Aliasing Raster Data In Air Borne Imagery, Fahim Arif, Muhammad Akbar Aug 2005

A New Approach For Anti-Aliasing Raster Data In Air Borne Imagery, Fahim Arif, Muhammad Akbar

International Conference on Information and Communication Technologies

Air borne sensed data is in the form of raster data. Aliasing is always present in a sampled image causing artifact error. To reduce possible aliasing effects, it is a good idea to blur an image slightly before applying a resampling method on it. This paper presents a technique for anti-aliasing remotely sensed images. The technique uses Gaussian low pass filter (GLPF) for generation of slight blur. Then resampling of raster data is performed with the help of bilinear interpolation. Algorithm is developed in MATLAB using some inbuilt functions.

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A Visual Tool For Trellis Construction And Decoder Debugging Rac Array Codes, Lami Kaya, Muhammad -Al- Qudah Aug 2005

A Visual Tool For Trellis Construction And Decoder Debugging Rac Array Codes, Lami Kaya, Muhammad -Al- Qudah

International Conference on Information and Communication Technologies

We have developed a visual tool for can be added to a specific RAC array positions and their effect can be easily determined by the help of the visual tool. The program environment has been set in a adaptive manner in order to change different parameters of the RAC codes and see their effect directly. decoding of row and column (RAC) array codes. The visual tool provides interface to view all paths corresponding selected input information bits. Errors constructing trellis diagram and tracing Viterbi.

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Secured Network Model For Management Information System Based On Ip Security (Ipsec) Encryption Using Multilayered Approach Of Network Security, Dr. Amir Hassan Pathan, Muniza Irshad Aug 2005

Secured Network Model For Management Information System Based On Ip Security (Ipsec) Encryption Using Multilayered Approach Of Network Security, Dr. Amir Hassan Pathan, Muniza Irshad

International Conference on Information and Communication Technologies

Secured flow of information through the network and play important role in the management information systems. In this paper I describe Secured Network Model For Corporate & Business Organization In Based On Network Level IP Security (IPSec) Encryption & Its Physical Layout Using Multilayered Approach. I have four important considerations for adoption of secured network model as secured network model for management information system.

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A Performance Comparison Of Data Encryption Algorithms, Aamer Nadeem, Dr. M. Younus Javed Aug 2005

A Performance Comparison Of Data Encryption Algorithms, Aamer Nadeem, Dr. M. Younus Javed

International Conference on Information and Communication Technologies

The principal goal guiding the design of any encryption algorithm must be security against unauthorized attacks. However, for all practical applications, performance and the cost of implementation are also important concerns. A data encryption algorithm would not be of much use if it is secure enough but slow in performance because it is a common practice to embed encryption algorithms in other applications such as e-commerce, banking, and online transaction processing applications. Embedding of encryption algorithms in other applications also precludes a hardware implementation, and is thus a major cause of degraded overall performance of the system. In this paper, …

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Identification Of Ip Information Of Pakistan & Vulnerability Assessment, Nizar Diamond Ali Aug 2005

Identification Of Ip Information Of Pakistan & Vulnerability Assessment, Nizar Diamond Ali

International Conference on Information and Communication Technologies

Detailed IP information of Pakistan was not available prior to this study - at least not to the general public. It was not known how to harvest this information, from where and using which tools. This study came as answer to this challenge and shows how the IP information can be collected, what sources of information to use, methodologies to adopt and tools to utilize for this purpose. The next step was find out areas where network security lapses are present - i.e., to see which servers and which services are vulnerable to known attacks and vulnerabilities. In this way, …

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Real Time Object Tracking Using Bma, Zeeshan Hameed Khan, Muhammad Aurangzeb Aug 2005

Real Time Object Tracking Using Bma, Zeeshan Hameed Khan, Muhammad Aurangzeb

International Conference on Information and Communication Technologies

This paper describes real time object tracking using block matching algorithm (BMA). Emphasis is made on the development of techniques for tracking a user-selected object through digital image sequences in multimedia systems. The ability to track objects in sequences is useful in situations where the motion of objects is important. It is also useful when a moving object is difficult to see and needs to be highlighted. A tracking tool is also of benefit to the developers of a multimedia system to automatically 'mark up' a moving object so a user of the system can select it and manipulate it.

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Exploring The Possibility Of Implementing Telecommuting At University Utara Malaysia (Uum), Dr. Wan Rozaini Sheik Osman, Haitham Rashdan Aug 2005

Exploring The Possibility Of Implementing Telecommuting At University Utara Malaysia (Uum), Dr. Wan Rozaini Sheik Osman, Haitham Rashdan

International Conference on Information and Communication Technologies

Global technology has quickly progressed to provide more accessible business modes of communication. The image of the traditional workplace as a particular place to go to work is being replaced with employees working wherever they can be most efficient and productive, whether at home, on a plane, on the road, or a telework center. The availability of affordable technology has been one of the major contributors to the "any time, any place" telecommuting trend. The purpose of this study is to investigate the possibility of the implementation of teleworking at University Utara Malaysia (UUM), the suitable job selection criteria, the …

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A Survey On Intrusion Detection Approaches, A Murali M. Rao Aug 2005

A Survey On Intrusion Detection Approaches, A Murali M. Rao

International Conference on Information and Communication Technologies

Intrusion detection plays one of the key roles in computer security techniques and is one of the prime areas of research. Usages of computer network services are tremendously increasing day by day and at the same time intruders are also playing a major role to deny network services, compromising the crucial services for Email, FTP and Web. Realizing the importance of the problem due to intrusions, many researchers have taken up research in this area and have proposed several solutions. It has come to a stage to take a stock of the research results and project a comprehensive view so …

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G-Value Decoding Of Greedy Codes, Khalil Ahmad Aug 2005

G-Value Decoding Of Greedy Codes, Khalil Ahmad

International Conference on Information and Communication Technologies

Error-correcting codes are widely used to increase the reliability of transmission of information over various forms of communication channels. Codes with a given minimum distance d can be constructed by a greedy algorithm [2]. In this paper, I proposed a new algorithm for the allocation of g-values to the binary vectors. Hamming (7, 4, 3) code can be generated by the application of greedy algorithm on the binary vectors of length 7 arranged in B-ordering. This code is used to demonstrate a new decoding technique for linear codes in addition to the schemes already known for decoding such as Syndrome …

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Optimization Of Semantic Caching For Xml Database, Sharifullah Khan, Awais Hamid Aug 2005

Optimization Of Semantic Caching For Xml Database, Sharifullah Khan, Awais Hamid

International Conference on Information and Communication Technologies

The availability of information on the Internet has increased exponentially the Internet users in the last few years. This made the web servers overloaded. Semantic caches store the semantics and results of the previously asked queries close to the users, in order to answer new queries. The caching reduces the burden of the web servers and optimizes their performance. This paper presents the SMOCE Cache, a framework for semantic caching of XML database. Specialized techniques such as indexing and broadening of semantic regions are proposed for the optimization of semantic caching. The evaluation of prototype proved the significance of proposed …

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Knowledge Management In Public Sector Universities Of Pakistan, Eram Abbasi, Arshad Siddiqui Aug 2005

Knowledge Management In Public Sector Universities Of Pakistan, Eram Abbasi, Arshad Siddiqui

International Conference on Information and Communication Technologies

In the modern era of globalization of business, 'Information & Knowledge' is considered as the most vital resource for organizational stability. Businesses significantly depend on efficient management of 'Information' and transforming it into 'Knowledge'. Even though Information and Knowledge have been recognized as the vital resource, still the concepts of 'Information Systems' and 'Knowledge Management' are yet misunderstood. The paper firstly reviews the foundations of Information Systems to establish the basis for the conceptual understanding of 'Knowledge Management'. With these theoretical bases, then a generalized model for 'Knowledge Management' has been proposed. The discussion continues with concepts as to how …

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A Dynamic Weight Assignment Approach For Ir Systems, M. Shoaib, Prof Dr. Abad Ali Shah, A. Vashishta Aug 2005

A Dynamic Weight Assignment Approach For Ir Systems, M. Shoaib, Prof Dr. Abad Ali Shah, A. Vashishta

International Conference on Information and Communication Technologies

Weights are assigned to the extracted keywords for partial matching and computing ranking in an IR system. Weight assignment technique is suggested by the IR model that is used for an IR system. Currently suggested weight assignment techniques are static which means that once weight is assigned a keyword it remains unchanged during life-span of an IR system. In this paper, we suggest a dynamic weight assignment technique. This technique can be used by any IR model that supports partial matching.

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Using Agents For Unification Of Information Extraction And Data Mining, Sharjeel Imtiaz, Azmat Hussain, Dr. Sikandar Hiyat Aug 2005

Using Agents For Unification Of Information Extraction And Data Mining, Sharjeel Imtiaz, Azmat Hussain, Dr. Sikandar Hiyat

International Conference on Information and Communication Technologies

Early work for unification of information extraction and data mining is motivational and problem stated work. This paper proposes a solution framework for unification using intelligent agents. A Relation manager agent extracted feature with cross feedback approach and also provide a Unified Undirected graphical handle. An RPM agent an approach to minimize loop back proposes pooling and model utilization with common parameter for both text and entity level abstractions.

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Design Phase Analysis Of Software Reliability Using Aspect-Oriented Programming, Farhan Rafique, Khalid Mahmood, Tauseef-U- Rehman, Khalid Rashid Aug 2005

Design Phase Analysis Of Software Reliability Using Aspect-Oriented Programming, Farhan Rafique, Khalid Mahmood, Tauseef-U- Rehman, Khalid Rashid

International Conference on Information and Communication Technologies

Software system may have various nonfunctional requirements such as reliability, security, performance and schedulability. If we can predict how well the system will meet such requirements at an early phase of software development, we can significantly save the total development cost and time. Among non-functional requirements, reliability is commonly required as the essential property of the system being developed. Therefore, many analysis methods have been proposed but methods that can be practically performed in the design phase are rare. In this paper we show how design-level aspects can be used to separate reliability concerns from essential functional concerns during software …

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Study Of Data Provenance And Annotation Model For Information Reliability Suggested For Pathological Laboratory Environment In Pakistan, Naila Aamir, Aslam Pervez Aug 2005

Study Of Data Provenance And Annotation Model For Information Reliability Suggested For Pathological Laboratory Environment In Pakistan, Naila Aamir, Aslam Pervez

International Conference on Information and Communication Technologies

Trust and reliability of information is a very critical issue of today's information age. Keeping provenance of data not only ensures us about its origination but it also keeps track of all the changes that happen to the data through out its life cycle. In this paper we have discussed the importance of data provenance, difference between Where & Why Provenance and different models for keeping such information. The objective of this study is to select a provenance model which can be implemented in scientific environment of our country. For this purpose we have taken the annotation model and have …

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Ergonomics: Implications On Computer End-Users, Maheen Ghauri, Dr. Arshad Siddiqi Aug 2005

Ergonomics: Implications On Computer End-Users, Maheen Ghauri, Dr. Arshad Siddiqi

International Conference on Information and Communication Technologies

Ergonomics is the application of scientific information related to humans to the design of objects, systems and environment for human use. The objective is to apply human characteristics to the design of computer-based work environments to reduce problems of people at work. Lack of ergonomics has serious repercussions on end-users, including physical and mental illnesses. Using ergonomics to design computer-intensive environments would maximize efficiency, productivity and job satisfaction of employees. Unfortunately, in the Government Sector in Pakistan, there is no application of ergonomics in computer-based environments, and this leads to inefficiencies, errors, and safety and health issues. The purpose of …

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Visualization Of Retrieved Positive Data Using Blending Function, Muhammad Shoaib, Habib -Ur- Rehman, Dr. Abad Ali Shah Aug 2005

Visualization Of Retrieved Positive Data Using Blending Function, Muhammad Shoaib, Habib -Ur- Rehman, Dr. Abad Ali Shah

International Conference on Information and Communication Technologies

Data visualization is an important technique used in data mining. We present the retrieved data into visual format to discover features and trends inherent to the data. Some features of the data to be retrieved are already known to us. Visualization should preserve these known features inherent to the data. Positivity is one such known feature that is inherent to most of the scientific and business data sets. For example, mass, volume and percentage concentration are meaningful only when they are positive values. However certain visualization techniques do not guarantee to preserve this feature while constructing visualization of retrieved data …

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Keynote: Role Of Values & Culture In Information Technology, Prof. Dr. Anis Ahmad Aug 2005

Keynote: Role Of Values & Culture In Information Technology, Prof. Dr. Anis Ahmad

International Conference on Information and Communication Technologies

It is no longer unusual to see, in a remote town in northern area in Pakistan, a practically non-literate wagon driver calling from his Nokia cell phone his uncle in Dubai or in Karachi. He enjoys sharing with him about his success in business and the settlement of family disputes. While he is driving on dangerous curvy roads and having this conversation, in the back seat of the wagon a comparatively young person is playing games on his cell phone. All this was unimaginable a quarter of a century ago.

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Keynote: On Organizational Accidents, Dr. Abdul Raouf Aug 2005

Keynote: On Organizational Accidents, Dr. Abdul Raouf

International Conference on Information and Communication Technologies

The paper deals with accidents causing organizational failure. A comparison between the two different types of accidents, organizational and personal, is provided. Examples of organizational disasters in history, along with the contributing factors are presented. A model describing the `anatomy' of organizational accidents is presented. The model provides the factors causing barrier failure. Concepts of Reliability Engineering are provided to determine Process availability. Process Availability is essential to meet the process demand rate. Increased process demand is likely to cause additional stress on workers thus resulting in unsafe acts.

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Keynote: Hexagonal Structure For Intelligent Vision, Xiangjian He, Wenjing Jia Aug 2005

Keynote: Hexagonal Structure For Intelligent Vision, Xiangjian He, Wenjing Jia

International Conference on Information and Communication Technologies

Using hexagonal grids to represent digital images have been studied for more than 40 years. Increased processing capabilities of graphic devices and recent improvements in CCD technology have made hexagonal sampling attractive for practical applications and brought new interests on this topic. The hexagonal structure is considered to be preferable to the rectangular structure due to its higher sampling efficiency, consistent connectivity and higher angular resolution and is even proved to be superior to square structure in many applications. Since there is no mature hardware for hexagonal-based image capture and display, square to hexagonal image conversion has to be done …

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Assessing The Health Of Fringing Salt Marshes Along The Fore River And Its Tributaries, Pamela A. Morgan, Lucas Curci, Cayce Dalton, Jeremy Miller Aug 2005

Assessing The Health Of Fringing Salt Marshes Along The Fore River And Its Tributaries, Pamela A. Morgan, Lucas Curci, Cayce Dalton, Jeremy Miller

Environmental Studies Faculty Publications

Casco Bay has experienced two significant oil spills in recent history - the Tamano Tanker spill in 1972 and the Julie N spill in 1996. In addition, the Fore River and its tributaries have experienced numerous small spills over the years, including the August 2002 fuel oil spill (2,900 gallons) and the April 2003 jet fuel spill (6,000 gallons). The impacts of these spills on the fringing salt marshes that line the edges of the Fore River and its tributaries are not well understood. Are these salt marshes resilient enough to withstand these impacts and still act as healthy marshes …

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Wright State University Volleyball Media Guide 2005, Wright State University Athletics Aug 2005

Wright State University Volleyball Media Guide 2005, Wright State University Athletics

Athletics Publications

A media guide for Wright State University's 2005 Volleyball team. This guide includes photographs, player stats, game results, and records.

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