bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessing Mobile Value-Added Preference Structures
Authors: Donaldson Opal , Duggan Evan W.
Published: June 2012

Globally, the telecommunications industry is transitioning from a business model that relied heavily on voice communication as the primary source of income to one in which data services provide the largest share of revenues. This trend is evident in Europe, the United States, India, and several other countries. However, while data services have been introduced widely, not all countries have experienced the same level of success. In this chapter, we posit that the differences in economic benefit are directly related to the cultural uniqueness of each mobile market and recommend a consumer-centric approach as a potential solution to successful market uptake. Cultural uniqueness is evident in the consumption of high levels of multimedia content in South Korea which is not enjoyed in other economies despite the push by telecommunication providers. It is also evident in the success of mobile banking for the unbanked poor in parts of Africa but western societies have not exploited its potential. In this research, we used Anckar and D’Incau’s (2002) analytical framework to assess consumer value-added preference structures by exploring the market preferences of a developing country which exhibits the characteristics of a telecommunication market that is saturated and poised for data services integration. The findings suggest that all value-added characteristics evaluated had a positive impact on consumer desirability for a mobile application. Most importantly, the findings highlighted that the inclusion of value-added features within a mobile application is not enough but optimizing the desired combination for a user group may be critical.
Is Updating Play or Work?
Authors: Joseph Damien , Tan Mei Ling , Ang Soon
Published: June 2012

This study proposes that IT professionals’ behavioral orientation towards IT knowledge and skills updating demands can take on two contrasting forms: updating-as-play or updating-as-work. Drawing on threat-rigidity theory (Staw, Sandelands, & Dutton, 1981), the authors hypothesize that IT professionals who feel threatened by professional obsolescence are more likely to approach updating-as-work more than as play. Results from a sample of IT professionals are consistent with threat-rigidity theory (Staw et al., 1981) in that the threat of professional obsolescence is negatively related to updating-as-play and is positively related to updating-as-work. The authors also find that updating-as-play is negatively related to turnaway intentions and that updating-as-work is positively related to turnover intentions; these findings are consistent with IT theories of job mobility. The authors conclude this study with a discussion of these results and propose future research directions.
Gender Wage Differentials in Information Systems
Authors: Nezlek George , DeHondt Gerald
Published: June 2012

This paper investigates trends and changes in the gender earnings gap for individuals employed in clerical and professional level information systems positions in the U.S. labor market for the period of 1991 through 2008. It examines changes in the earnings gap for IS workers, specifically considering changes relative to the so-called “Internet bubble” observed primarily during the late 1990s. Quantitative analysis of changes in the wage gap, adjusted for key determinants, is based on data from the Current Population Survey (CPS). Examination of these data suggests that the gender earnings gap is persistent despite frequent claims to the contrary from industry surveys and that the gap is narrower for professional level positions. Furthermore, the data suggest that female IS workers, particularly in professional level occupations, may have experienced a beneficial effect from the internet bubble, but it is unclear whether or not that beneficial effect may be fading in the post-bubble internet bust of the early 21st century.
An Examination of Prestigious Stigma
Authors: Moore Jo Ellen , Love Mary Sue
Published: June 2012

This paper examines “technology geek” through the social psychological lens of stigma. The research expands on an aspect of stigma that can materialize in work settings but has not been fully explicated in prior stigma theory, namely, prestige. The authors argue that a stigma may be worn with pride rather than shame, typified by the case of the technology geek, called “prestigious stigma.” The theory building focuses on interactions between the technology geek and others in the organization, positing that prestigiously stigmatized individuals behave in ways that differ from what social psychologists have generally posited for the stigmatized. This effort culminates in a model of mixed interaction involving the technology geek, which extends prior stigma theory and provides insights for practice and future research regarding technology professionals in organizations.
Coding for Unique Ideas and Ambiguity
Authors: Badura Victoria , Read Aaron , Briggs Robert O. , de Vreede Gert-Jan
Published: June 2012

Groups can generate so many ideas during a decision making process involving brainstorming that they become an impediment to group processes. Convergence activities reduce the number of ideas generated by the group and clarify those ideas, allowing the group to move forward with a set of ideas worthy of further attention. Research about convergence and its affect on collaboration is in the early stages. To further this research, measures of convergence are developed in this study as part of an assessment of the effects of convergence on an ideation artifact produced by managers attempting to solve an actual business problem. This paper presents a method for quantifying the reduction and clarification that has occurred through convergence using an assessment of a pre- and post-convergence artifact. This study expands upon understanding of collaboration by presenting the method of characterizing the convergence artifacts.
3D Virtual Worlds
Authors: Goggins Sean , Schmidt Matthew , Guajardo Jesus , Moore Joi L.
Published: June 2012

Teams meet in 3D virtual worlds more frequently than ever before, yet the tools for evaluating 3D collaboration environments are underdeveloped. To close the 3D collaboration tool evaluation gap, the authors integrate lessons from the gaming industry and distributed work research. They develop two complementary approaches. First, the individual user’s perspective using eye-tracking (ET) is addressed, and second, the collaborative experience of the group using a technique called All-Views-Qualitative-Analysis (AVQA) is evaluated. The latter integrates the points-of-view of all subjects in a small group collaborating on a creative work task in a 3 dimensional virtual world. The authors show how these techniques enable evaluation of 3D environment design from the perspective of human computer interaction theory and theories related to distributed work. The paper discusses why designers should seek ways to leverage the advantages of 3D collaboration technologies and avoid recreating mirrors of physical space in these environments.
Toward an Understanding of Software Piracy in Developed and Emerging Economies
Authors: Reinig Bruce A. , Plice Robert K.
Published: June 2012

The software industry loses billions of dollars annually to software piracy and has raised awareness of the high software piracy rates worldwide, particularly in emerging economies. In this paper, the authors build a general model of software piracy that includes three economic and social factors suggested by the literature, including per capita GNI, the relative size of a country’s IT market, and government corruption. The paper demonstrates that the relationship between national software piracy and per capita GNI is nonlinear, with additional gains in per capita GNI, producing marginally smaller reductions in software piracy. No structural variation is found in the model with respect to whether an economy is developed or emerging, using the OECD membership as a proxy. However, a structural break did exist with respect to the relative size of a country’s IT market. The analysis suggests that the classification of an economy as developed or emerging does not necessarily advance the understanding of the causal mechanisms that give rise to software piracy. Findings suggest that more insight can be gained by focusing on strategies that take into account the relative size of a country’s IT market.
Getting Lost in the Labyrinth
Authors: Conway John
Published: June 2012

The importance of the labyrinth as a trope in the Western tradition can hardly be overstated. Far from being a metaphor that describes just anything, it is a sign whose meaning appears in specific contexts. This article argues how the labyrinth’s triple function as visual, verbal and spatial sign—as well as its paradoxical function as unicursal and multicursal structure—makes it flexible enough to represent the paradoxical and complex nature of the modern workplace, the city, the mall and the individual subject’s position within an ever burgeoning network of relationships brought about by consumerism, capitalism, and commodification. Understanding the labyrinth trope helps people to understand the subject’s relationship to power and the very technology that we have created and in which we are trapped.
Physicalizing the Image, Physicalizing the Digital
Authors: Truckenbrod Joan
Published: June 2012

Radically shifting personal experience of the visual image from virtual worlds like Second Life, from flat screens, cinema, and paper to physical forms, subverts the predominance of the digital realm. Living on the surface of the screen minimizes the tactility of materials and the resonance of memory and meaning embodied in objects. Digital 3D cinema, 3D television, and 3D cameras are precursors at the threshold of transforming digital into physical. The image flexes from screen to object with 3D printers and CNC machines. In the medical profession, computer 3D images from CT scans are transformed to remotely controlled, physical surgeries. Recently thinking experiments use brain activity to remotely control robotic arms. Vehicles for physicalizing the image from paper, screen, and from one’s imagination and thinking in the brain, manifest three-dimensional, palpable, sensory, tactile, objectified experiences. How will this phenomena transform modes of digital communication, physical interactions, and production on both the global and the personal scales? How will the material role of the computer prescribe new creative activities, new modes of artistic expression?
Teaching with ICT
Authors: Falcinelli Floriana , Laici Chiara
Published: June 2012

Presented is the research and professional development results carried out by teachers on the use of educational technologies in the classroom in the course of an experimentation based on the PoliCultura&Moodle didactic format. The training course was designed as an integrated model of presence (laboratory) and online activities and focuses on the use of LCMS (Learning Content Management System) Moodle as a resource for achieving a deeper interaction with both the institutions involved in the projects and with students (and their families) as well as for supporting and disseminating the educational activities carried out in the classroom, with an online environment that would enable the exchange, the interaction and sharing of the study content.
Moving from a “Flood Our School” to an “Islands of Success” Conception in the Process of Advancing Underprivileged Children
Authors: Offir Baruch , Wengrowicz Niva
Published: June 2012

Policy makers in education do not perceive the education system as a unique discipline, but rather judge it using terms appropriate for the world of economics. Methods of analysis and decision-making that exist in the world of economics are implemented in the field of education. This reality was the basis for the authors’ research on the integration of technological systems for the advancement of students which was conducted as part of their desire to understand processes of change in learning systems. It became clear that in order to succeed in the process of integrating innovative technological systems in the schools, society should not “flood the schools” with technology, but should rather use the “islands of success method.”
An Architecture Paradigm for Providing Cloud Services in School Labs Based on Open Source Software to Enhance ICT in Education
Authors: Siahos Yannis , Papanagiotou Iasonas , Georgopoulos Alkis , Tsamis Fotis , Papaioannou Ioannis
Published: June 2012

The authors present their experience and practices of introducing cloud services, as a means to simplify the adoption of ICT (Information Communication and Technology) in education, using Free/Open Source Software. The solution creates a hybrid cloud infrastructure, in order to provide a pre-installed (Ubuntu and Linux Terminal Server Project) virtual machine, acting as a server inside the school, providing desktop environment based on the Software as a Service cloud model, where legacy PCs act as stateless devices. Classroom management is accomplished using the application “Epoptes.” To minimize administration tasks, educational software is provided accordingly, either on-line or through repositories to automate software installation (including patches and updates). The advantages of the hybrid cloud implementation, include services that are not completely dependent on broadband connections’ state, minimal cost, reusability of obsolete equipment, ease of administration, centralized management, patches and educational software provisioning and, above all, facilitation of the educational procedure.
Biometrics
Authors: Dongardive Prakash , Deshpande Neela
Published: June 2012

In the age of information the rise in development of (ICT) Information Communication Technology and Internet, the format of documents has changed to digital. Electronic information sources have become an important part for today’s library and users. Electronic information is gaining more importance in academic activities with an extreme change in the pattern of dissemination of knowledge. Web technology provides dynamism to the electronic documents that were note possible in the essentially sequential style of presentation of printed documents. Interactive hyperlinks to related resources, links to full range of multimedia, traditional indexing, and abstracting services, etc., are some of the novelties that are common in a web document. Faculty has a vital role in providing up-to-date information with the latest technologies, so they must be skilled users of electronic information through online journals. Hence, it is worth studying the use of online journals. Suggestions have been given to strengthen existing online journals subscription, the availability of full text online journals, and accessibility, e.g., system speed and maximizing the use of online journals among science faculty members at the University of Pune.
SAR
Authors: Mamat Rabiei , Herawan Tutut , Deris Mustafa Mat
Published: June 2012

Soft-set theory proposed by Molodstov is a general mathematic tool for dealing with uncertainty. Recently, several algorithms have been proposed for decision making using soft-set theory. However, these algorithms still concern on Boolean-valued information system. In this paper, Support Attribute Representative (SAR), a soft-set based technique for decision making in categorical-valued information system is proposed. The proposed technique has been tested on three datasets to select the best partitioning attribute. Furthermore, two UCI benchmark datasets are used to elaborate the performance of the proposed technique in term of executing time. On these two datasets, it is shown that SAR outperforms three rough set-based techniques TR, MMR, and MDA up to 95% and 50%, respectively. The results of this research will provide useful information for decision makers to handle categorical datasets.
Antiepileptic Drugs for Preventing Seizures Following Acute Traumatic Brain Injury
Authors: Price Amy
Published: June 2012

The work was done to explore the effectiveness of prophylactic antiepileptic drugs for acute traumatic brain injury and assess risk: benefit ratios. The author asked if this intervention helped sort-term survivors avoid seizures after injury and assessed the influence of such medication on death and disability which result in seizures in long term survivors of TBI. Finally, the work assessed the benefits given potential adverse reactions to these drugs. The author found that using anti-epileptic drugs in the early stages after traumatic brain injury does decrease seizures. This review found that anti-epileptic drugs were effective for decreasing seizures in the first week after a TBI. Available pooled data failed to demonstrate reductions in overall mortality, late onset seizures, or the development of persistent vegetative states. However, the conclusions are limited by the scarcity of clear data collected to investigate cognitive/behavioural, neurological, or hematopoietic adverse effects thought to result from the anti seizure medications.
Medical Students’ Perspective on TBI after Participation in Interactive Evidence-Based Online Learning
Authors: Chandra Shivika , Mathew Manu
Published: June 2012

The Cochrane Students’ Journal Club is an online learning journal club which aims at creating a secondary learning resource for gathering and appraising evidence. This article illustrates an example of how an interactive discussion, on the use of anti-epileptic drugs for the prevention of seizures in patients with acute traumatic brain injury, can be used by students to formulate a plan for managing such patients in actual clinical practice.
From Neuroplasticity to Scaffolding
Authors: Ewing Gillian
Published: June 2012

This paper is a review of cognitive aging research centred on the Scaffolding Theory of Aging and Cognition (STAC), a theory which brings together much of the previous research into cognitive aging over the past century and suggests directions for future work. From Santiago Ramon y Cajal, with his microscope and talented drawings, to today’s researchers with psychological and neurobiological methods and technology, particularly neuroimaging techniques, such as fMRI, sMRI, PET, etc., enormous progress has been made, through cognitive reserve, dedifferentiation, compensation, hemispherical asymmetry, inhibition and neurotransmission, to the Scaffolding theory of aging and cognition and beyond. Prior to 1990, research was almost entirely behavioural, but the advent of neuroimaging has boosted research and given rise to a new domain known as cognitive neuroscience, combining behavioural and neurobiological approaches to investigate structural and functional changes in the aging brain. Having reviewed the existing literature on cognitive aging research, the author concludes that although the scaffolding theory brings together a significant body of work and ideas, it is not yet the single, unifying theory for researchers. However, it does represent a giant step toward that theory.
The Lights are on but Nobody’s at Home
Authors: Smith David Ward
Published: June 2012

In this narrative, the author shares his perspective from both sides of the spectrum. First, the author begins as a patient with traumatic brain injury (TBI) secondary to an accident, as he deals with post-traumatic amnesia. His view as a trained osteopath, who draws on these experiences to heal others afflicted with TBI and its sequelae, is then presented.
Optimizing Opportunities for Brain Injury Survivors
Authors: Kessler Rohn , Paco
Published: June 2012

In this paper, the authors (a doctor and his patient) share their complex journey into cognitive rehabilitation and a relationship that propels healing in the face of complexity against all odds. The patient came to S.O.G. unable to walk, with unclear speech and cognitive deficits but nothing could stop the indomitable resolve that spearheaded his recovery after 2 months in a coma. The patient was to blossom as a writer, an artist and a patient volunteer. His insights and skills were gently mentored by the doctor as they traveled together on the road to success and healing. This is their story.
Traumatic Brain Injury and My Grandparents
Authors: Price Jazmin , Price Amy
Published: June 2012

This article explores some of the trials and tribulations the family members of patients with traumatic brain injury go through. In the first part, Jazmin Price recounts her recollections of the accident which changed her grandparents’ lives and the effect which it had on her interactions with them. In the second part of the article, Dr. Amy Price, Jazmin’s grandmother shares her side of the story and shares how despite the challenges a TBI patient faces, “where there is life, there is hope”
Analyzing OSS Project Health with Heterogeneous Data Sources
Authors: Sunindyo Wikan Danar , Moser Thomas , Winkler Dietmar , Biffl Stefan
Published: June 2012

Stakeholders in Open Source Software (OSS) projects need to determine whether a project is likely to sustain for a sufficient period of time in order to justify their investments into this project. In an OSS project context, there are typically several data sources and OSS processes relevant for determining project health indicators. However, even within one project these data sources often are technically and/or semantically heterogeneous, which makes data collection and analysis tedious and error prone. In this paper, the authors propose and evaluate a framework for OSS data analysis (FOSSDA), which enables the efficient collection, integration, and analysis of data from heterogeneous sources. Major results of the empirical studies are: (a) the framework is useful for integrating data from heterogeneous data sources effectively and (b) project health indicators based on integrated data analyses were found to be more accurate than analyses based on individual non-integrated data sources.
Growth and Characterization of InAs Quantum Dots on GaAsSb
Authors: Liu Guang Yan , Wang Wen Cai
Published: June 2012

The growth details of strained GaAsSb layers on GaAs(001) substrates were studied by reflection high energy electron diffraction (RHEED) beam intensity oscillations as a function of both substrate temperature and Sb/As flux ratio. Both the RHEED intensity and RHEED oscillation cycles are reduced with decreasing substrate temperature and Sb/As flux ratio. InAs QDs with high dot density, small dot size and narrow size distribution have been achieved on strained GaAs / GaAsSb buffer layer. The average lateral size of dots shows a trend toward to smaller size and dots’ density shows a trend toward to higher density as the surface Sb composition increasing. The QDs with higher density and smaller size distributions at high Sb composition, indicates that the Sb plays an important role in the dot formation under this growth condition. The lattice mismatch of InAs layer with the GaAsSb buffer layer is reduced with increasing of Sb composition in the GaAsSb interlayer. This result indicates that the density, size and size distribution of self-assembled quantum dots (QDs) can be controlled through the manipulation of the Sb-mediated strain field in the lattice mismatched system.
High Speed Dry Sliding Tribological Behaviors of Amorphous Fe-Based Alloy Coatings
Authors: Du San Ming , Chen Yue , Zhang Yong Zhen
Published: June 2012

In the present study, amorphous coatings on plain steel substrate were prepared by electric arc spraying technique. The high-speed dry sliding tribological properties of the coating were investigated on a pin-on-disc tribo-meter. The results show that amorphous phase generates in the sprayed coating. When the sliding speeds are less than 40m/s, the friction coefficient increases. The friction coefficients decrease with the sliding speed exceeding 60m/s. The wear rates increase with increasing the sliding. Phase transition occurs in the friction process.
Hot Workability Analysis of Extruded Mg-Zn-Mn-Y Magnesium Alloys with Different Phases
Authors: He Wei Wei , Zhang Kun , Huang Min , Dai Sheng Long
Published: June 2012

Workability, an important parameter in magnesium alloys forming process, can be evaluated by means of processing maps on the basis of dynamic materials model, constructed from experimentally generated flow stress variation with respect to strain, strain rate and temperature. To obtain the processing maps of extruded Mg-Zn-Mn-Y magnesium alloy with different secondary phases (I-phase and W-phase), hot compression tests were performed over a range of temperatures 523–673 K and strain rates 0.001~10s-1. The response of strain-rate sensitivity (m-value), power dissipation efficiency (ζ-value) and instability parameter (n-value) to temperature and strain rate were evaluated. By the superimposition of the power dissipation and the instability maps, the dynamic recrystallization (DRX) and instability zones were identified and validated through micrographs. The observations were performed in order to describe the behavior of the material under hot forming operation in terms of material damage and micro-structural modification.
Improvement of Morphology, Structure, and Thermal Properties of Electrospun PVA/RSF Fiber Mats by SiO2
Authors: Liu Yan Hua , Dai Li Xing
Published: June 2012

Poly(viny1 alcohol) (PVA)/regenerated silk fibroin (RSF)/silicon dioxide (SiO2) fiber mats were prepared by electrospinning of composite solutions. Fiber morphology was observed under a scanning electron microscope and effects addition of SiO2 was evaluated. Results showed that the obtained fibers exhibited a smooth outer surface, and the continuity was improved because of the different solution conductivity, solution viscosity and compatibility of PVA and RSF by the addition of 1.0 wt. % SiO2. It was found that both Si-O-C linkage and hydrogen bonding interactions were existed among SiO2, PVA, and RSF by FTIR spectroscopy. The addition of SiO2 also resulted in the decrease of crystallinity and increase of thermal properties of electrospun fibers, which were suggested as a result of enhanced compatibility and physical properties of PVA and RSF composite.
In Vitro Blood Compatibility of Alumina Coatings Prepared by Micro-Arc Oxidation on Biomedical NiTi Alloy
Authors: Xu Ji Lin , Liu Fu , Luo Jun Ming , Zhong Zhen Chen
Published: June 2012

In this paper, the in vitro blood compatibility of micro-arc oxidation (MAO) alumina coatings prepared in different times on biomedical NiTi alloy was studied using hemolysis ratio, dynamic blood clotting and platelet adhesion. The results show that the blood compatibility of the coated NiTi alloy is much better than that of uncoated NiTi alloy and reduces with increasing the micro-arc oxidation treatment times. Therefore, it can be concluded that the blood compatibility of materials is mainly dominated by the surface species contacted with blood within some ranges of surface roughness, not the surface morphologies, and the MAO alumina coatings can effectively improve the blood compatibility of NiTi alloy
Photocatalytic Degradation of Methyl Orange by a New Photoctalyst Multi-Walled Carbon Nanotues (MWCNTs)/TiO2/CdS Nanocomposite
Authors: Ke Ou Yang , Shan Xie , Ma Xiao Ou , Li Meng , Feng Qiu Lian
Published: June 2012

Composite photocatalysts using TiO2 coated by Multi-walled carbon nanotues(MWCNTs) and CdS were prepared by sol-gel process. The purpose of adding MWCNTs and CdS was extending the light absorbance range of pure TiO2 to visible light. Methyl orange (MO) was chosen as an object. The degradation of MO by MWCNTs/TiO2/CdS composite photocatalysts under visible light irradiation was studied. The results showed that the presence of MWCNTs and CdS can enhance the photoefficiency of TiO2 greatly. In addition, The photocatalyst was used for five cycles with photocatalytic degradation efficiency still higher than 96%. The photocatalytic degradation of MO followed a first-order kinetics according to the Langmuir-Hinshelwood model. A possible decomposing mechanism for the photocatalytic oxidative degradation was also discussed. The results of the study showed the potential use of MWCNTs/TiO2/CdS composite in degradation of toxic organic pollutants.
Pilot Study of PET/Bamboo Charcoal Warp-Knitted Fabric
Authors: Lin Jia Horng , Lin Ching Wen , Lin Chin Mei , Yang Yi Chang , Li Ting Ting , Lou Ching Wen
Published: June 2012

In recent years, as improvement of human living life, people begin to focus on themselves health. It is certain that bamboo charcoal has many properties, including water purification, deodorization, anion release and far-infrared ray radiation. This study aims to prepare PET/BC warp-knitted fabric composed of polyester yarn (PET) as warp yarn and bamboo charcoal polyamine yarn (BC) as weft yarn using Velcro Crochet Machine. Afterwards, air permeability, elastic resilience and far-infrared ray emissivity of resulting knitted fabric were discussed by changing weft yarn type. Result shows that, for knitted fabrics, weft yarn type cannot affect the elastic resilience; yet PET weft yarn makes air permeability decreasing.
Preparation and Characterization of Activated Carbon Fibers from Jute Fibers by Phosphoric Acid Activation
Authors: He Li Fen , Liu Qi Xia , Ji Tao , Gao Qiang
Published: June 2012

Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials and phosphoric acid as activating agent. The effects of three main factors such as concentration of activating agent, activation temperature and activation time on the yield and adsorptive properties of active carbon fibers were investigated via orthogonal experiments. The surface physical morphology of jute-based activated carbon fiber was also observed by using Scanning Electron Microscope. Results showed that the optimum conditions were phosphoric acid concentration of 4 mol/L, activation temperature of 600 °C and activation time of 1h. The yield, iodine number and amount of methylene blue adsorption of the active carbon fiber prepared under optimum conditions were 37.99 %, 1208.87 mg/g and 374.65 mg/g, respectively.
Preparation and Study to Core-Material of Microcapsule for Textiles Discoloration Finishes
Authors: Feng Qiang Qiang , Shen Lan Ping , Li Dan Meng
Published: June 2012

Choose the organic thermochromic compo site materials as thermochromic microcapsule core-material，Using and studying crystal violet lactone 、bisphenol A and tetradecyl alcohol as the components of compo site materials according to the need of textiles finishies. We analysed the structure and capability of the compo site materials and identified 1:4:70 as the optimal ratio of the compo site materials could suitable for discoloration gradient of textiles，lay the foundation for preparation of microcapsule and textiles finishies. The discoloration fabric as functional textile has a tremendous market potential，its could using discoloration dress、materials-show and prevent bogus marker。Thermochromic fabrics is the intelligent textile and colour changed following the temperature changes. Generally，the Thermochromic materials was encased by microcapsule and using the finishing technology pasted the microcapsule on the surface of fabrics,so the fabric could has the discoloration function. Currently，thermochromic materials have organic、inorganic and Liquid crystal materials. Study to thermochromic materials and achieved a organic thermochromic compo site material in this paper，using the compo site material as the core-material of thermochromic microcapsule for the discolouration fabric finishes.
Preparation of Nano-CaCO3/Fast-Growing Poplar Composite by the Diffusion Method
Authors: Jia Zhen , Li Guo Liang , Li Jian , Wang Cheng Yu , Zhang Zhi Jun
Published: June 2012

This paper introduced gap filling mechanism of wood and inorganic composite and used the mechanism to optimize the wood properties of poplar. Through double diffusion method of the vacuum impregnation, CaCO3 and poplar composite was prepared. Using Sample characterization methods and performance indexes, prepared wood inorganic nanometer composite (WINC) was with hydrophobic and higher hardness.
Preparation of PVAc Particles by Dispersion Polymerization
Authors: Gu Wen Juan , Zhang Xiao Hui , Li Jie
Published: June 2012

Highly uniform polyvinylacetate particles of submicron size were prepared by dispersion polymerization in mixed media of isopropanol and water initiated by redox initiator of NaHSO3 and K2S2O8 using poly(N-vinylpyrrolidone) as stabilizer. Monomer conversion was studied gravimetrically. Both the morphology and the size of the particles were measured by TEM. The influences of various polymerization parameters, such as monomer concentration, stabilizer content, on the particle properties were systematically investigated. The PVAc particles synthesized in this research were mono-disperse spheres with the diameter between 100-1000 nm.
Reason Research of the Low Impact Value of 2Cr11Mo1VNbN Ring Forging
Authors: Wang Lei Gang , Chen Hong , Huang Yao , Qian Xi Gen
Published: June 2012

2Cr11Mo1VNbN steel was mainly used in the manufacture of turbine rotor blades, bolts, nuts and other important parts. However, in actual production, the impact value of their products often failed to meet requirements leaving the material scrapping. In this paper, through observation and analysis of the sample microstructure, fracture morphology and the precipitated phase by electron microscopy and energy dispersive spectroscopy, the results showed that: the low impact value of 2Cr11Mo1VNbN steel ring forgings was caused by the abnormal and large grain, uneven tissue and bulky niobium carbide exhalatted from grain boundary which was serious damage to the stability of grain boundary.
Research on Aircraft Aluminum Alloy Structure Corrosion Fatigue Life Based on Artificial Neural Net Theory
Authors: Liu Zhi Guo , Mu Zhi Tao , Cai Zeng Jie , Zhang Shi Lu
Published: June 2012

Ther BP neural net model which is a branch of artificial neural net theory was adopted to analyse the problem of aircraft LY12CZ structure corrosion fatigue life considering the effect of stress level and corrosion environment,and Newton interpolation algorithm was used to increase the quantity and enhance the quality of BP net model training data. The application result show that the BP net model can simulate the value and development trend of corrosion fatigue life with higher precision contrast to the traditional method of exponential function fitting.
Sodium Silicate as Catalyst and Modifier for Phenol-Formaldehyde Resin
Authors: Sun Jin , Lin Rui Hang , Wang Xiao Bo , Zhu Xiao Feng , Gao Zhen Zhong
Published: June 2012

The novel adhesives were prepared using PF resin as matrix and sodium silicate as modification additive. It was proved by Fourier transform infrared spectrometer (FTIR) that silicon-oxygen bonds had been successfully introduced to the structure of PF resin. Boiling water extraction (BWE)，scanning electron microscopy (SEM)，thermogravimetric analyzer (TGA) and differential scanning calorimetry (DSC) were used to characterize the structure of PF resin modified with sodium silicate (Na2SiO3-PF). The test results show that sodium silicate is an effective modifier to PF resin which lessen the brittleness, accelerate the cure rate and enhance the boiling water resistance of PF resin as well. The FTIR，TGA and DSC test results also show that the structure of PF resin has been changed by sodium silicate.
Studies on Thermal Conductivity of MWNTs/EPDM Composites by the Heat Probe Method
Authors: Zhang Xiao Guang , Ji Ying Jie , Wang Shi Gang , Hou Qing Lin
Published: June 2012

Multi-walled carbon nanotubes (MWNTs) were used as filler to enhance thermal conductivity of Ethylene propylene diene monomer (EPDM) polymers. In order to study the thermal conductivity of the MWNTs/EPDM composites in three different directions, an experiment was conducted by the heat probe method. The results show the general average thermal conductivity of MWNTs/EPDM composites is 0.323 W/m•K，which is significantly higher than EPDM polymers. The maximum difference of thermal conductivity between two directions is 8.7% relative to the general average, indicating obvious anisotropic behavior.
Study and Analysis of Metal Coolant Thermophysical Properties
Authors: Liu Meng Ying , Zhou Tao , Zou Wen Zhong , Su Zi Wei
Published: June 2012

The article chooses Na, LiPb and LBE three kinds of metal coolant, and makes a comparative analysis of the thermophysical properties of Na, LiPb and LBE when they are at liquid state. The results show that Na has the lowest density and the largest thermal conductivity and specific heat capacity. There is a small difference between LBE and LiPb in terms of density, thermal conductivity and specific heat capacity. LiPb has the largest kinematic viscosity. The thermal conductivity of Na decreases as temperature rises, which is opposite of LBE and LiPb. The kinematic viscosity of LiPb increases as temperature rises. Considering thermal conductivity and specific heat capacity, LBE and LiPb are not the best coolant. However, their high densities can economize equipments and materials at the same time. When it flows, LiPb’s heat transfer capacity gets larger as temperature rises, this character can not be ignored in fusion reactor.
Study on Surface Nanocrystallization of TiAl Alloys Induced by HEBMT
Authors: Yao Tian Hang , Zhang Wei , Liu Yong , Zhang Ming Yang , Wang Di Ni
Published: June 2012

Utilize the high-energy ball milling techniques (HEBMT) to get a certain thickness of the nanocrystalline layer in gradient structure on TiAl-based alloys surface, while using X-ray diffraction and electron microscopy techniques to analyze the microscopic structure of the surface and study its variation along the depth direction. The results show that through HEBMT, the sample surface can get nanocrystallization and its nano-grain size can be refined to less than 10nm while having a 15μm nanocrystalline layer. Nanoindentation tests show that the surface hardness of the samples after HEBMT can be significantly increased from 340HV to 922HV.
Study on the Crack Forming during Cold Forging Process of ML25Mn Steel
Authors: Li Zhuang , Wu Di , Lv Wei
Published: June 2012

The important factors that affect the formability of the cold forging steel are its surface quality and internal defects. The cracking phenomenon was taken place during cold forging of ML25Mn steel. In this study, microstructural analyses were made on around the cracked regions of the steel. The reason of cracking, which occurred during cold forging for ML25Mn steel, was investigated based on SEM observation in detail. The results have shown that the crack forming during cold forging process is not related to the chemical composition for ML25Mn steel. Cracking is not resulted from high hardness of the steel rods. There are some non-metallic inclusions in the matrix of ML25Mn steel, and the film-like inclusions are composed of MnS, CaS and complex oxides containing Mg, Al, Mn, Fe, S, Ca and O. The formation of non-metallic inclusions is the result of the deoxidation and the solidification during smelting and casting of steel.
Super Wettable Poly(Ethylene Terephthalate)(PET) Fabric Modified by UV/Nano-TiO2/H2O2
Authors: Liang Hui , Zhang Guang Xian , Zhang Feng Xiu , Zheng Hui , Lu Ming , Wu Da Yang
Published: June 2012

The poly(ethylene terephthalate)(PET) fabric was modified by ultraviolet radiation, nano TiO2 and H2O 2 . The results showed that PET fabric could be modified to super wettable fabric, the contact angle of PET fabric irradiated by ultraviolet radiation for 50 min could decrease to 0o in 3.29 second. The Scanning electrical micrograph(SEM) showed there were lots of oxidized products on the surface of modified PET fibers. FT-IR spectra showed modified PET fiber had –COOH, and probably had –NO2. The X-ray diffraction showed the crystallinity increased greatly, and had two new diffraction peaks.
The Pattern Simulation of New Woodiness Restructuring Decoration
Authors: Liu Yi , Liu Guan , Fu Zhan , Li Yi Ping , Guo Hong Wu
Published: June 2012

This paper used pattern design, colour design and mold design comprehensively, using compression molding and simulated carving technology, studying a way to realize the pattern simulation of woodiness restructuring decoration. The result showed that it’s feasible to simulate pattern of new woodiness restructuring decoration, and the adornment effect was good. The line of the simulated pattern needed to be smooth. it’s better for the color in per unit area to be less. During the compression molding of board, the key point of decorative pattern simulation was the mould design. As adornment material instead of structural one, the technological parameters such as impregnation, pressure of hot pressing, time of hot pressing process during the process of preparation had a small effect on the adornment of board.
The Study of Nano-Sized TiO2 Finishing Coconut Carbon/Cotton Interwoven Fabric Adsorption and Degradation Formaldehyde
Authors: Liu Ting Ting , Shen Lan Ping , Wang Jing Jing
Published: June 2012

The coconut carbon/cotton interwoven fabric has good absorbing ability on formaldehyde. In this paper we adopt the satin weave and weave The coconut carbon/cotton interwoven fabric, then carry on the nano-sized TiO2 finishing, can reach the optimum process of the nano-sized TiO2 finishing, then study and test the property of adsorption and degradation formaldehyde after finising.
Design of a Pineapple Picking End-Actuator
Authors: Xia Hong Mei , Li Qing Rong , Zhen Wen Bin
Published: June 2012

Physical dimension and mechanics properties of Bali pineapple samples were measured. Statistic results show size difference of vertical height is minimum, size difference of transverse diameter is maximum. For ensuring gripping stability and precision, the pineapple end- actuator was designed according to transverse diameter. Static compression test results show elastic deformation firstly occurs when the compression load is small. As the load increases to a certain extent, rupture and yield failure gradually generates. With maturity degree increase, limit compression strength reduces. Influence of maturity degree on limit compression strength is extraordinary significant. The pineapple should be harvested in time considering of maturity degree. The larger the pineapple transverse diameter is, the less the limit compression strength is. For those pineapples with same maturity degree, influence of transverse diameter variety on limit compression strength is not significant. The clamping mechanism chooses sliding-lever double-fulcrum structure. When its finger lever angle  takes 35, center distance of the two fulcrum 2a is 110mm, v-shaped groove angle is 120，finger lever length takes 135 mm, clamping error requirements can be satisfied, and the optimized deflection angle  is 87.6. Clamping force analysis shows that the designed picking end-actuator can ensure no damage clamping for pineapple.
The Synthesis and Electromagnetic Properties of Wave-Like Ni
Authors: Wang Chao , Hu Su Rong , Han Xi Jiang , Zhang Tao , Tang Guang Ping , Wei Qi Long , Yang Qiang
Published: June 2012

The wave-like Ni is synthesized without any impurity via varying the addition of surfactant PVP, its microwave absorption can be attributed to dielectric loss and magnetic loss, and exhibits an maximum absorption value of -14.19 dB at 14.2 GHz.
Thermo-Mechanical Simulation of Ultra-High Strength Ferrite-Bainite Dual Phase Steel
Authors: Lv Wei , Wu Di , Li Zhuang
Published: June 2012

In the present paper, thermo-mechanical simulation of ultra-high strength ferrite-bainite dual phase (DP) steel was performed using a thermomechanical simulator. Continuous cooling transformation (CCT) diagram was constructed for DP steel. The effects of composition and cooling rate on the kinetics and products of phase transformation and the form of the CCT diagram were investigated. The results have shown that the α→γ transformation in DP steel was found to be more sluggish due to the addition of alloying elements. The segregation of manganese and niobium at austenite grain boundaries is expected to cause a solute drag effect, thereby reducing the rate of γ→α transformation in DP steel. The pearlite transformation region disappeared for cooling rates from 0.1 to 20°C/s. The microstructure comprises of bainite and martenite was obtained at fast cooling rate. The present steel is expected to have a higher hardenability.
Development of Knitting Protective Sleeve
Authors: Xia Xiu Li
Published: June 2012

Knitted protective sleeve mainly deals with the functional development . Using molding technology of knitted fabrics and special coating technology, implemented a full-shaped cuff of production technology and specific coating technology. The results show that the shaped cuff reduces the disadvantages caused by sewing, high fabric elasticity; special coating and coating techniques, reducing the load, at the same time so that the fabric is beautiful, has better properties of waterproof and moisture permeability, improves the wearing comfort.
Experimental Study on Infrared Spectrum Characteristics of Coal in Low Temperature Oxidation
Authors: Zhang Yan Ni , Deng Jun , Wang Wei Feng , Li Shi Rong , Hou Shuang
Published: June 2012

Coal spontaneous combustion is a complex procedure of physical and chemical changing, in which the macro characters is the reflection of micro changes of coal molecule structure in low temperature oxidation. In order to understand the essence of coal-oxygen composition, the Fourier transform infrared spectrum apparatus is used to test and analyze different kinds of coal samples in different oxidation temperature. According to main characteristic spectrum peaks, the activity of coal functional groups is studied. The difference and change of the type and quantity of functional groups in different kinds of coal sample in different temperature are analyzed. The relation between the macro structure change and spontaneous combustion property of coal in low temperature oxidation process is discussed.
Design of the Metal Gasket of Subsea Connector for Manifolds
Authors: Wang Jin Long , Duan Meng Lan , Dong Yan Hui , Guo Hong , Li Bo , Luo Xiao Lan
Published: June 2012

The subsea connector for manifolds is working in bad conditions. The water environment is harsh. And the inner pressure of the jumper which is connected by the subsea connector is high. In this paper, a new design of metal gasket for the connector is proposed. The metal gasket develops a surface contact with the upper and lower hubs. Under the effect of internal pressure, the seal ring will expand outward to ensure good seal performance. The design has a simple structure, and is easy to manufacture and disassemble .This paper uses the finite element analysis to investigate the gasket’s performance in different working conditions, and provides reference for real tests and the engineering application.
Preliminary Study of Manufacturing Technique Using Three Dimensions Stain Steel Braid for Bone Scaffold
Authors: Lin Jia Horng , Lin Ching Wen , Chen Yueh Sheng , Huang Chien Lin , Chen Wen Cheng , Lou Ching Wen
Published: June 2012

Nowadays, as rising research on biomaterials, the artificial bone scaffold has become the most important part of the study. Moreover, metallic materials have been applied on the artificial bone scaffold; but its high rigidity causes the stress shielding effect in bones. To improve the disadvantages of metallic materials and pursue their better mechanical properties, 304 stainless steel fibers have multi-layer braided into the 3D stainless-steel braid with porous structure and better mechanical properties, using braiding machine. In multi-layer braiding process, with the constant number of take-up gear and varying number of braid gear, the 3D stainless-steel braid was manufactured. Afterwards, its braiding structure and angle were observed by stereo microscope. Also, the optimal braiding parameters can be acquired from tensile strength test.