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2010

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Articles 571 - 600 of 6945

Full-Text Articles in Physical Sciences and Mathematics

Information Security Risk Assessment: Towards A Business Practice Perspective, Piya Shedden, Wally Smith, Atif Ahmad Nov 2010

Information Security Risk Assessment: Towards A Business Practice Perspective, Piya Shedden, Wally Smith, Atif Ahmad

Australian Information Security Management Conference

Information security risk assessments (ISRAs) are of great importance for organisations. Current ISRA methods identify an organisation’s security risks and provide a measured, analysed security risk profile of critical information assets in order to build plans to treat risk. However, despite prevalent use in organisations today, current methods adopt a limited view of information assets during risk identification. In the context of day-to-day activities, people copy, print and discuss information, leading to the ‘leakage’ of information assets. Employees will create and use unofficial assets as part of their day-to-day routines. Furthermore, employees will also possess important knowledge on how to …

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Organisational Learning And Incident Response: Promoting Effective Learning Through The Incident Response Process, Piya Shedden, Atif Ahmad, A B. Ruighaver Nov 2010

Organisational Learning And Incident Response: Promoting Effective Learning Through The Incident Response Process, Piya Shedden, Atif Ahmad, A B. Ruighaver

Australian Information Security Management Conference

Effective response to information security incidents is a critical function of modern organisations. However, recent studies have indicated that organisations have adopted a narrow and technical view of incident response (IR), focusing on the immediate concern of detection and subsequent corrective actions. Although some reflection on the IR process may be involved, it is typically limited to technical issues and does not leverage opportunities to learn about the organisational security threat environment and to adapt incident response capabilities. Given the science of incident response is rooted in practice, it is not surprising that the same criticisms can be applied to …

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Information Security Disclosure: A Victorian Case Study, Ian Rosewall, Matthew Warren Nov 2010

Information Security Disclosure: A Victorian Case Study, Ian Rosewall, Matthew Warren

Australian Information Security Management Conference

This paper will focus upon the impact of Generation Y and their attitudes to security. The paper will be based around discussing the findings of a recent report by the Office of Police Integrity (OPI) on “Information Security and the Victoria Police State Surveillance Unit”. Issues that will be discussed include the context of Generation Y and how they contribute to the case study, their attitudes, or their perceived attitudes to security of information. A discussion of the OPI report itself, and the issues that have arisen. A brief overview of the key findings within this report and the implications …

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The Complexity Of Security Studies In Nfc Payment System, Marc Pasquet, Sylvie Gerbaix Nov 2010

The Complexity Of Security Studies In Nfc Payment System, Marc Pasquet, Sylvie Gerbaix

Australian Information Security Management Conference

If we compare the security problem of a face-to-face contactless card payment process with a mobile phone NFC payment process, we may easily consider that the latter is far more difficult to study. Indeed, the more partners from different organizations involved in the process there are, the more complex the studies are and, accordingly, its protection. As well as the current solutions applied to studying the electronic payment security chain (Common Criteria, ISO 27005, etc), the James Reason model has pointed out the specific risks implied by the interaction between the different links in a complex chain. His theory has …

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International Relations And Cyber Attacks: Official And Unofficial Discourse, Kay Hearn, Patricia A H Williams, Rachel J. Mahncke Nov 2010

International Relations And Cyber Attacks: Official And Unofficial Discourse, Kay Hearn, Patricia A H Williams, Rachel J. Mahncke

Australian Information Warfare and Security Conference

The potential for cyberwarfare is vast and is of concern to all nations, and national security defence. It appears that many countries are actively trying to protect their computer networks, whilst looking for ways that might bring down the networks of other countries, although this is not officially acknowledged. Bringing down another nations computer networks could give the attacking national intelligence and control. These kinds of interactions are now a part of the way in which international relations are played out, and the internet is also a place in which international relations are contested. As such the internet plays a …

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2d Spatial Distributions For Measures Of Random Sequences Using Conjugate Maps, Qingping Li, Jeffrey Zhi J. Zheng Nov 2010

2d Spatial Distributions For Measures Of Random Sequences Using Conjugate Maps, Qingping Li, Jeffrey Zhi J. Zheng

Australian Information Warfare and Security Conference

Advanced visual tools are useful to provide additional information for modern information warfare. 2D spatial distributions of random sequences play an important role to understand properties of complex sequences. This paper proposes time-sequences from a given logical function of 1D Cellular Automata in both Poincare map and conjugate map. Multiple measure sequences of Markov chains can be used to display spatial distributions using conjugate maps. Measure sequences recursively produced by different logical functions generating maps. Possible complementary feature exits between pair functions, Conjugate symmetry relationships between a pair of logical functions in conjugate maps can be observed.

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Wikileaks: The Truth Or Not, Ian Rosewall, Matthew J. Warren Nov 2010

Wikileaks: The Truth Or Not, Ian Rosewall, Matthew J. Warren

Australian Information Warfare and Security Conference

We live in the Information Age, an age where information is shared in a global context and in real time. The issue is whether all information should be disclosed. In the ‘Information Age’ do secrets still exist? Another major issue is whether groups of vigilantes are the ones who should be disclosing this information, should these vigilante groups be trusted? This paper will focus upon the impact of Wikileaks and the problem of Information disclosure especially when that information is confidential. It will identify cases for discussion. In the main these cases will be of a military flavour.

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Information Warfare: Time For A Redefinition, Patricia A H Williams Nov 2010

Information Warfare: Time For A Redefinition, Patricia A H Williams

Australian Information Warfare and Security Conference

Information warfare has become an increasingly diverse field. The changes to its composition have been primarily driven by changes in technology and the resulting increased access to information. Further, it has been the progressively more diverse methods available for communication that has fuelled expanding applications for information warfare techniques into non-military environments. In order for younger generations of students to understand the place of information warfare in the larger security picture, there is a need to shift the emphasis from many of the military underpinnings to its relevance in modern society and the challenges in the commercial environment. This paper …

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Detect And Sanitise Encoded Cross-Site Scripting And Sql Injection Attack Strings Using A Hash Map, Erwin Adi, Irene Salomo Nov 2010

Detect And Sanitise Encoded Cross-Site Scripting And Sql Injection Attack Strings Using A Hash Map, Erwin Adi, Irene Salomo

Australian Information Security Management Conference

Cross-Site Scripting (XSS) and SQL injection are the top vulnerabilities found in web applications. Attacks to these vulnerabilities could have been minimised through placing a good filter before the web application processes the malicious strings. However adversaries could craft variations on the attack strings in such a way that they do not get filtered. Checking through all of the possible attack strings was tedious and causes the web application performance to degrade. In this paper, we propose the use of a hash map as a data structure to address the issue. We implemented a proof-of-concept filter which we tested through …

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Mahalanobis Distance Map Approach For Anomaly Detection, Aruna Jamdagnil, Zhiyuan Tan, Priyadarsi Nanda, Xiangjian He, Ren Ping Liu Nov 2010

Mahalanobis Distance Map Approach For Anomaly Detection, Aruna Jamdagnil, Zhiyuan Tan, Priyadarsi Nanda, Xiangjian He, Ren Ping Liu

Australian Information Security Management Conference

Web servers and web-based applications are commonly used as attack targets. The main issues are how to prevent unauthorised access and to protect web servers from the attack. Intrusion Detection Systems (IDSs) are widely used security tools to detect cyber-attacks and malicious activities in computer systems and networks. In this paper, we focus on the detection of various web-based attacks using Geometrical Structure Anomaly Detection (GSAD) model and we also propose a novel algorithm for the selection of most discriminating features to improve the computational complexity of payload-based GSAD model. Linear Discriminant method (LDA) is used for the feature reduction …

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On-Metal Synthesis Of Some Rhenium Complexes, Chad L. Phillips Nov 2010

On-Metal Synthesis Of Some Rhenium Complexes, Chad L. Phillips

Mahurin Honors College Capstone Experience/Thesis Projects

In 1977, Shirakawa and coworkers discovered the first conductive polymers. Their conductive polymers have been extensively studied. Though some of these first conductive polymers such as polyactelyne seemed to be a promising organic conductor, the commercial applications of these polymers were severely limited due the polymer’s highly air-sensitive nature. Thus, the current focus has shifted towards the development of heterocyclic aromatic polymers which are air-stable and have a low band gap. Expanding of the work of Snyder and Selegue, the focus of my research has been the incorporation of rhenium metal into an organic compound in an on-metal fashion. Several …

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Hospital Network Infrastructure: A Modern Look Into The Network Backbone With Real Time Visibility, Homan Mike Hirad Nov 2010

Hospital Network Infrastructure: A Modern Look Into The Network Backbone With Real Time Visibility, Homan Mike Hirad

Regis University Student Publications (comprehensive collection)

For the purposes of this research, the "design science" discipline of Information Systems will structure the overall methodology and framework for results. By leveraging the design science framework, this study will dissect and analyze various parts of a hospital's network, to uncover substandard practices and problematic weaknesses that commonly result in an overall decrease in the quality of healthcare provided to patients, and negatively affect business operations of hospitals and healthcare facilities. For the purposes of this research the chosen hospital will be categorized as Mid-Western Hospital. This thesis will investigate, in a real world healthcare organization, fault management technologies …

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A Bayesian Shared Component Model For Genetic Association Studies, Juan J. Abellan, Carlos Abellan, Juan R. Gonzalez Nov 2010

A Bayesian Shared Component Model For Genetic Association Studies, Juan J. Abellan, Carlos Abellan, Juan R. Gonzalez

COBRA Preprint Series

We present a novel approach to address genome association studies between single nucleotide polymorphisms (SNPs) and disease. We propose a Bayesian shared component model to tease out the genotype information that is common to cases and controls from the one that is specific to cases only. This allows to detect the SNPs that show the strongest association with the disease. The model can be applied to case-control studies with more than one disease. In fact, we illustrate the use of this model with a dataset of 23,418 SNPs from a case-control study by The Welcome Trust Case Control Consortium (2007) …

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Remote Measurements Of On-Road Emissions From Heavy-Duty Diesel Vehicles In California; Year 3, 2010, Brent G. Schuchmann, Gary A. Bishop, Donald H. Stedman Nov 2010

Remote Measurements Of On-Road Emissions From Heavy-Duty Diesel Vehicles In California; Year 3, 2010, Brent G. Schuchmann, Gary A. Bishop, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

No abstract provided.

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Nuclear Magnetic Resonance Affinity Screening Methods For Functional Annotation Of Proteins And Drug Discovery, Matthew D. Shortridge Nov 2010

Nuclear Magnetic Resonance Affinity Screening Methods For Functional Annotation Of Proteins And Drug Discovery, Matthew D. Shortridge

Department of Chemistry: Dissertations, Theses, and Student Research

With nearly 1,350 complete genome sequences available our understanding of biology at the molecular level has never been more complete. A consequence of these sequencing projects was the discovery of large functionally unannotated segments of each genome. The genes (and proteins they encode) found in these unannotated regions are considered “hypothetical proteins”. Current estimates suggest between 12%-50% of the known gene sequences are functionally unannotated. Incomplete functional annotation of the various genomes significantly limits our understanding of biology. Pragmatically, identifying the functions of these proteins could lead to new therapeutics; making functional annotation of paramount importance.

This dissertation describes the …

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Web-Based Intelligent Computational Argumentation Based Conflict Resolution In Air Traffic Management, Xiaoqing Frank Liu, Ravi Santosh Arvapally, Hojong Baik, Rubal Wanchoo Nov 2010

Web-Based Intelligent Computational Argumentation Based Conflict Resolution In Air Traffic Management, Xiaoqing Frank Liu, Ravi Santosh Arvapally, Hojong Baik, Rubal Wanchoo

Computer Science Faculty Research & Creative Works

Collaborative decision making (CDM) is a process of reaching consensus on a potential solution of an issue through the evaluation of the different possible alternatives. the web-Based intelligent computational argumentation system allows concerned stakeholders to post their arguments on different alternatives, assign weights and priorities to the arguments and reach the most favorable alternative using fuzzy intelligent techniques over the Internet. Exchange of information among the stakeholders improves the collaboration and drives towards the collective intelligence. in this paper, we show how our tool facilitates resolution of conflicts in air traffic management. It could enhance the Ground Delay Program (GDP) …

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Frequency Dependence In The Initiation Of Ultrafast Laser-Induced Damage, Jeremy R. Gulley Nov 2010

Frequency Dependence In The Initiation Of Ultrafast Laser-Induced Damage, Jeremy R. Gulley

Faculty Articles

Numerous studies have investigated the role of photoionization in ultrafast laser-induced damage of bulk dielectrics. This study examines the role of spectral width and instantaneous laser frequency in laser-induced damage using a frequency dependent multiphoton ionization model and numerical simulation of an 800 nm laser pulse propagating through fused silica. When the individual photon wavelengths are greater than 827 nm, an additional photon is required for photoionization, reducing the probability of the event by many orders of magnitude. Simulation results suggest that this frequency dependence may significantly affect the processes of laser-induced damage and filamentation.

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Electrochemical Detection For The Corrosion Of Reinforcing Steel In Concrete During Immersion And Drying Cycles, Bing-Li Jia, Fa-He Cao, An-Na Chen, Jian-Qing Zhang Nov 2010

Electrochemical Detection For The Corrosion Of Reinforcing Steel In Concrete During Immersion And Drying Cycles, Bing-Li Jia, Fa-He Cao, An-Na Chen, Jian-Qing Zhang

Journal of Electrochemistry

The corrosion behavior of reinforcing steel in concrete under dry-wet cycle condition has been studied by electrochemical noise(EN) compared with the electrochemical impedance spectroscopy(EIS),SEM micrographs and EDS.The statistical method has been employed to analyze the EN data of reinforcing steel in concrete,which revealed three different corrosion stages of reinforcing steel in concrete,including the dissolution of the passive film,the active corrosion and the cumulation of corrosion product.The wavelet transform has also been employed,which indicated that steel in concrete with pH 1 is associated with uniform corrosion,while steel in concrete with pH 3 and pH 7 are associated with localized corrosion,such as …

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Study On Preparing Technology And Corrosion Resistance Of Ti/Zr Based Chromium-Free Chemical Conversion Coating On Zinc Electroplating Layer, Yong Guan, Jian-Guo Liu, Chuan-Wei Yan Nov 2010

Study On Preparing Technology And Corrosion Resistance Of Ti/Zr Based Chromium-Free Chemical Conversion Coating On Zinc Electroplating Layer, Yong Guan, Jian-Guo Liu, Chuan-Wei Yan

Journal of Electrochemistry

In this paper,we obtained environmental-friendly chromium-free chemical conversion coating on the non-cyanide alkaline zinc electroplating layer by employing the optimized Ti/Zr based conversion technique.At the same time,the performances of the Ti/Zr based conversion coating were compared with chromate colour passivation coating.The corrosion resistances of the conversion coatings were investigated by using neutral salt spray(NSS) test,potentiodynamic polarization and electrochemical impedance spectroscopy(EIS).The results showed that the white rust appeared after 96 hours when the NSS test was performed on the Ti/Zr based conversion coating,which was close to the corrosion resistance rating of chromate colour passivation coating.Compared with the chromate passivation coating,the Ti/Zr …

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Preparation And Characterization Of The Silane-Phosphonic Acid Composite Passivation Coating For Electrogalvanized Steel, Yong Guan, Jian-Guo Liu, Chuan-Wei Yan Nov 2010

Preparation And Characterization Of The Silane-Phosphonic Acid Composite Passivation Coating For Electrogalvanized Steel, Yong Guan, Jian-Guo Liu, Chuan-Wei Yan

Journal of Electrochemistry

A new silane-phosphonic acid composite passivation coating process has been developed for the protection of electrogalvanized steel based on N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane(AAPTMS),γ-(2,3-epoxypropoxy)propyltrimethoxy-silane(GPTMS) and 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP).The results of X-ray photoelectron spectroscopy(XPS),Fourier transform infrared spectroscopy(FTIR),potentiodynamic polarization scan,electrochemical impedance spectroscopy(EIS) and neutral salt spray(NSS) tests indicated that the major structure of the prepared silane-phosphonic acid composite passivation coating consisted mainly of Si—O—Si and Si—O—P bonds.The area of white rust was not more than 5% of the total panal after 120 h NSS test,which could be compared favourably with the chromate colour passivation coating.However,the corrosion reaction on the anode of the silane-phosphonic acid composite passivation …

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The Roles Of The Width Of Gas/Liquid/Solid Three-Phase Boundary Zone Of Dispersion Water Films In Atmospheric Corrosion Of Metals, Jia Wang, Jing Jiang Nov 2010

The Roles Of The Width Of Gas/Liquid/Solid Three-Phase Boundary Zone Of Dispersion Water Films In Atmospheric Corrosion Of Metals, Jia Wang, Jing Jiang

Journal of Electrochemistry

The roles of TPB(Three-Phase Boundary) width in the corrosion processes of metals under dispersed water films were investigated by electrochemical techniques combined with contact angle measurement.It is found that both cathodic limiting current density and corrosion current density linearly increases with increasing the TPB width,confirming the important role of TPB width in gas/liquid/solid multiphase corrosion systems.Based on above results,the effect of water film thickness on atmospheric corrosion rate was quantitatively evaluated by the TPB width.

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Photoelectrochemical Properties Of N, S, And Cl Modified Nano Tio2 Thin Films, Hong Yun, Chang-Jian Lin, Jing Li, Rong-Gui Du Nov 2010

Photoelectrochemical Properties Of N, S, And Cl Modified Nano Tio2 Thin Films, Hong Yun, Chang-Jian Lin, Jing Li, Rong-Gui Du

Journal of Electrochemistry

The nitrogen(N),sulfur(S) and chlorine(Cl) modified nano TiO2 thin films were prepared by adding Ti(O-n-Bu)4 as the precursor into concentrated HNO3,H2SO4 and HCl Solutions,respectively,on different substrates in a sol-gel process.The photoelectrochemical performances of N,S and Cl modified nano TiO2 thin films have been studied by UV-vis(DRS),photocurrent curves,EIS and OCP-time curves.N-modified TiO2 nano films show better surface structure,which helps to improve the quantum efficiency of nano TiO2 thin films.

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Hydrothermal Reduction Synthesis Of Lifepo4 And Its Electrochemical Performance, Hong-Li Zou, Guang-Hui Zhang, Pei-Kang Shen Nov 2010

Hydrothermal Reduction Synthesis Of Lifepo4 And Its Electrochemical Performance, Hong-Li Zou, Guang-Hui Zhang, Pei-Kang Shen

Journal of Electrochemistry

The cathode materials of LiFePO4 were prepared via a hydrothermal reduction method using FeCl3 as Fe source and iron as a reducing agent.The results showed that ferric salt could be reduced to ferrous salt completely under the hydrothermal condition and pure-phase LiFePO4 was obtained based on the test results of XRD and FTIR.Carbon-coated LiFePO4 was synthesized by pyrolysisng glucose at high temperature.The morphologies of pure LiFePO4 displayed cluster-like while the LiFePO4/C displayed sphere-like particles.The electrochemical test showed that the LiFePO4/C had good rate performance,while LiFePO4 delivered much lower discharge capacity.

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Corrosion Electrochemical Behavior Of Am60 Magnesium Alloys In Automobile Engine Coolants, Ling-Jie Li, Sha Wang, Yin Xiao, Jun Lan, Jing-Lei Lei, Sheng-Tao Zhang, Fu-Sheng Pan Nov 2010

Corrosion Electrochemical Behavior Of Am60 Magnesium Alloys In Automobile Engine Coolants, Ling-Jie Li, Sha Wang, Yin Xiao, Jun Lan, Jing-Lei Lei, Sheng-Tao Zhang, Fu-Sheng Pan

Journal of Electrochemistry

The polarization measurements and electrochemical impedance spectroscopy(EIS) were used to study the corrosion electrochemical behavior of AM60 magnesium alloys in three kinds of commercial coolants for automobile engine.Results show that the tested commercial coolants are slightly corrosive to AM60 magnesium alloys and their corrosivity varies from coolant to coolant.The coolant C is the least corrosive among the studied commercial coolants and the coolant A is more corrosive than the coolant B and C.The coolant C appears to be the most promising coolant for automobile engine made by magnesium alloys.The coolant resistivity plays an important role in the corrosion of AM60 …

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Study Of The 11-Ferrocenylalkanethiol Redox-Induced Structure Changes By Flow-Injection Electrochemical Surface Plasmon Resonance, Xiu-Juan Xiao, Yong-Hui He, Juan Xiang, Bin Ren Nov 2010

Study Of The 11-Ferrocenylalkanethiol Redox-Induced Structure Changes By Flow-Injection Electrochemical Surface Plasmon Resonance, Xiu-Juan Xiao, Yong-Hui He, Juan Xiang, Bin Ren

Journal of Electrochemistry

Redox-induced orientation changes of self-assembled monolayers(SAMs) of 11-ferrocenylundecanethiol(FcC11SH) were studied by the flow-injection electrochemical surface plasmon resonance(FI-EC-SPR).Results indicated that there existed two mechanisms concerning the redox-induced structure change of the self-assembled monolayer of ferrocenylalkanethiols:the electrostatic repulsion between the positively charged surface and the ferricenium cation and that among the cations led to a decrease in the tilt angle of the alkanethiol chain;upon Fc oxidation,the Fc group rotated from a tilted conformation to a position where the cyclpentyldiene plane became perpendicular to the electrode.

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Electrodeposition Of Lead Dioxide From Dluoroborate Solutions, Chun-Mei Kong, Yong-Ming Tang, Wen-Zhong Yang, Xiao-Yuan Yang Nov 2010

Electrodeposition Of Lead Dioxide From Dluoroborate Solutions, Chun-Mei Kong, Yong-Ming Tang, Wen-Zhong Yang, Xiao-Yuan Yang

Journal of Electrochemistry

The PbO2 anodes were prepared on platinum from fluoroborate media and its doped solutions by electrodeposition technique.Elecchemical and pysicochemical properties of these PbO2 films were studied by cyclic voltammetry methods,XRD and SEM.The results showed that the presence of BF4-increased PbO2 electrodeposition rate;the prepared lead dioxide consisted of β-PbO2;the preferential orientation of crystals and surface morphology were affected a lot by doping F-and Fe3+.The FB/F-Fe-PbO2 electrode exhibited regular-shaped layers with compact morphology.Furthermore,increasing current density also change the preferential orientation of PbO2 crystals.

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The Sol-Gel Synthesis And Electrochemical Performance Of Li3V2(Po4)3/C Cathode Material For Lithium Ion Battery, Li-Ying Liu, Lian Chen, Hai-Yan Zhang, Yu-Chun Zhai Nov 2010

The Sol-Gel Synthesis And Electrochemical Performance Of Li3V2(Po4)3/C Cathode Material For Lithium Ion Battery, Li-Ying Liu, Lian Chen, Hai-Yan Zhang, Yu-Chun Zhai

Journal of Electrochemistry

Li3V2(PO4)3/C was synthesized by sol-gel method with citric acid as chelate and C sources. Physical and electrochemical performances of as-prepared materials were characterized through XRD, SEM and galvanostatic charge-discharge tests,etc. The results showed that products produced by calcining at 800 ℃ for 12 h had a single phase crystal structure and relatively small particle sizes with uniform distribution. At 0.1 C, 0.5 C and 1 C, the initial specific discharge capacities were 153.0, 143.1 and 130.6 mAh·g-1, respectively, and capacity efficiencies were 93.1%, 85.4% and 77.3% after 50 cycles, respectively. …

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Research On Nafion/Sio2 Composite Membrane In All Vanadium Redox Flow Battery, Dong-Dong Liu, Mao-Cai Lin, Tao Guan, Qing-Chun Yu Nov 2010

Research On Nafion/Sio2 Composite Membrane In All Vanadium Redox Flow Battery, Dong-Dong Liu, Mao-Cai Lin, Tao Guan, Qing-Chun Yu

Journal of Electrochemistry

The Nafion117/SiO2 composite membrane was prepared by sol-gel method.The results showed that,during composite membrane preparation process,the ratio of MeOH and TEOS did not affect the penetration rate of VO2+ basically,however,the lowest permeability of 427×10-9cm2/s in the membrane was achieved while hydrolysis time was 10 min and natural drying for 24 h after hydrolysis,which reduced by 52 times than that in Nafion117 membrane.The SEM tests proved that SiO2 grains grew bigger in the composite membrane during the natural drying,and most of the holes in Nafion117 were filled.Single cell test showed the battery power efficiency was improved …

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Electrochemical Performance Of Zinc Tetra (Trifluoroethoxy) Phthalocyaninate In Aqueous And Nonaqueous Solvents, Xiao-Shan Wu, Li-Ying Huang, Jin-Que Zhang, Shan-Lan Zhu Nov 2010

Electrochemical Performance Of Zinc Tetra (Trifluoroethoxy) Phthalocyaninate In Aqueous And Nonaqueous Solvents, Xiao-Shan Wu, Li-Ying Huang, Jin-Que Zhang, Shan-Lan Zhu

Journal of Electrochemistry

The cyclic voltammetric performance of ZnPcF in N,N-dimethylformaide(DMF),dimethyl sulfoxide(DMSO) solution and phosphate buffer solutions(PBS) has been examined.The results showed that four pairs of redox peaks appeared in nonaqueous solvents,and the values of half-wave redox potential were 0.558 V,-0.761 V,-1.034 V,-1.417 V,respectively,exhibiting four quasi-reversible phthalocyanine ligand based one-electron transfers.In PBS only two redox peaks were observed and the values of half-wave redox potential were-0.885 V,-1.104 V,exhibiting irreversible behavior characteristics.Comparing to the zinc phthalocyanine(unsubstitute ZnPc),introducing electron-withdrawing groups-trifluoroethoxyl to the peripheral sites of the phthalocyanines shifts the redox processes of the complex toward positive potentials.

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Testing Coupling Relationships In Object-Oriented Programs, Roger Alexander, Jeff Offutt, Andreas Stefik Nov 2010

Testing Coupling Relationships In Object-Oriented Programs, Roger Alexander, Jeff Offutt, Andreas Stefik

All Faculty Scholarship for the College of the Sciences

As we move toward developing object‐oriented (OO) programs, the complexity traditionally found in functions and procedures is moving to the connections among components. Different faults occur when components are integrated to form higher‐level structures that aggregate the behavior and state. Consequently, we need to place more effort on testing the connections among components. Although OO technologies provide abstraction mechanisms for building components that can then be integrated to form applications, it also adds new compositional relations that can contain faults. This paper describes techniques for analyzing and testing the polymorphic relationships that occur in OO software. The techniques adapt traditional …

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