bluuebunny/crossref_metadata_2025 huggingface dataset:
Justifying RFID Investment to Enable Mobile Service Applications in Manufacturing and Supply Chain
Authors: Lee In
Published: June 2012

Radio Frequency Identification (RFID) technology is rapidly expanding its application area from simple inventory management to advanced location tracking and supply chain management in a wide range of industries. Because of the potential benefits gained and high investment costs incurred by RFID, firms need to carefully assess every RFID opportunity and challenge to ensure that their resources are spent judiciously. Because of the lack of analytical methods for measuring the benefits and costs, this chapter presents a mathematical model for the evaluation of RFID investment in manufacturing and supply chain. This model provides a basis for the authors’ understanding of RFID value creation and ways to build an RFID business case for an RFID investment justification.
Workforce Assessment in the Jordanian ICT Industry
Authors: Al-Agtash Salem
Published: June 2012

This paper provides an assessment of workforce need in the Jordanian ICT industry. The results have shown that there is a growing workforce gap in the ICT sector. The technical skills of graduates are not satisfactory, and there is an increasing demand for skilled graduates. In addition to the technical skills required, communication skills, creative thinking, and English language skills were seen as important “soft skill elements” across all job categories and are missing in the current ICT workforce. The skills and competencies identified in this study can be used to motivate a design of an effective, flexible and relevant ICT program that can contribute to building a skillful workforce focusing on specialized and hands-on practices in ICT domains.
Committing to Organizational Change in IT Industry
Authors: Kauppinen Jukka-Pekka , Kivijärvi Hannu , Talvinen Jari
Published: June 2012

In the current competitive environment, managing organizational change successfully requires comprehensive understanding of change management concepts and processes as well as the implied drivers behind them. Information technology (IT) field is not an exception; growing interest exists for understanding organizational change and change management in the IT industry. Fast-paced changes in today’s IT and business environments are inevitable and the challenges associated with organizational changes are becoming more complex. This study aims to find at least partial answers to the question how employees’ commitment to change and the implementation quality of a change process affect achieving the goals and succeeding in an organizational change initiative. The study is conducted in two parts in a Finnish IT company providing complex IT solutions and services. The first part, the pilot study, identifies factors hindering employees’ commitment to change. The pilot study is followed by a quantitative main study, which investigates the relationships between employees’ level of commitment during the different phases of a change project, the change process quality, the importance and realization level of the different goals set for the change project, and the final success of the change initiative. The results indicate that a strong, positive relationship exists between the change process quality and the level of employees’ commitment to change.
Understanding Collaboration Success in Context of Cognitive and Social Presence
Authors: Deokar Amit V. , Meservy Thomas O. , Helquist Joel H. , Kruse John
Published: June 2012

Collaboration and the success of collaborative efforts has been the focus of much information systems research. Recent measures of collaboration success include effectiveness, efficiency, productivity, commitment, satisfaction with the process, and satisfaction with the outcome. While the possible antecedents of collaboration success are varied, this paper suggests that constructs from the e-learning literature that evolved independently from the information systems collaboration literature can be used to explain differences in perceived collaboration success. Results from a recent exploratory study demonstrate that cognitive presence and social presence explain a large amount of the variance of different collaboration success metrics.
Examining the Varying Influence of Social and Technological Aspects on Adoption and Usage of Knowledge Management Systems
Authors: Hester Andrea J.
Published: June 2012

Knowledge management strives for effective capture and application of organizational knowledge, a resource imperative in sustaining organizations. To better achieve knowledge management initiatives, examination of factors influencing adoption and usage of knowledge management systems (KMS) are of great interest. Implementation of technological solutions considered organizational innovation is subject to potential problems of resistance, implying analysis of social factors equally important to technological factors. With Innovation Diffusion Theory as a foundation, this research examines factors influencing adoption and usage of KMS. The model is extended to include Reciprocity Expectation, an important factor affecting knowledge management processes. Results indicate that some factors are important in determining adoption while others are important for continued usage. This research emphasizes careful consideration and re-evaluation of both social and technological factors throughout all stages of technology implementation; more specifically, Reciprocity Expectation may be an important factor affecting length of adoption, but insignificant in determining continued usage.
Using an Ethical Framework to Examine Linkages Between “Going Green” in Research Practices and Information and Communication Technologies
Authors: Zaman Maliha , Simmers Claire A. , Anandarajan Murugan
Published: June 2012

The link between “Going Green” in research practices and Information and Communication Technologies (ICTs) is studied using general ethics and social psychology literature. This paper investigates and concludes that a researcher’s ethical judgment is the strongest factor influencing their intention to follow green research practices (GRP). Their ethical judgment is molded indirectly by the researcher’s attitude towards environmental awareness. Their intention towards GRP is influenced by existing research practices and experience in using a technology touted as a greening enabler, Web 2.0. The strength of the relationship suggests there is no pivotal turning point in the research practices to become green. This paper concludes that GRP represent a smaller, albeit important, paradigm shift affecting the conduct and dissemination of research with positive spillover effects for the environment.
On Virtual FLUXUS
Authors: Lichty Patrick
Published: June 2012

Contemporary Technologies in art are available from the 1960’s. Virtual Fluxus is the result of more than a decade of digital practice events, which give a definition of the online world. This article on Virtual Fluxus discusses the paradoxes of the Virtual in Contemporary Art. It starts its discussion with a citation from Al Hansen, as: “Fluxus is a Virtual Reality system where the glove doesn’t work properly and the helmet doesn’t fit. Other things happen than what was intended”. In this paper, the author underlines that when Virtual Fluxus happened, the gloves and goggles began to work, and when inside, things were more gloriously broken than could have been imagined. In this paper, there are several examples of virtual artworks from different authors examined.
The Socio-Temporary in Architecture
Authors: Murrani Sana
Published: June 2012

The temporary in architecture is a state of territorial instability that emerges out of interactions between transdisciplinary narratives and architectural theory and its practice. This article extends this notion to the socio-temporary, which is a state arising from constant synergies between the social context and worldmaking. Such narratives were originally influenced by the field of cybernetics and later on by second-order cybernetics reflected in the emergent participatory art practice of the mid-twentieth century through transdisciplinary research. Derived from the theoretical underpinning of this article a simulation is exhibited, which illustrates theoretically elements of Varela and Maturana’s autopoietic system behaviour and its close relation to temporality in the worldmaking of architecture. This is a theoretical article – with an element of practice – that seeks to highlight the temporality of the process of worldmaking in architecture.
Using Google Sites Technology to Teach Undergraduate Courses
Authors: Dudina Irina
Published: June 2012

The paper reports the outcomes of the collaborative use of Google Sites in teaching undergraduate courses in Economic Terminology at Volgograd State University. Based on a students’ survey, that allowed the project team to collect relevant data grouped according to four criteria: accessibility, interactive capacity, problem solving facilities, and feasibility of online tasks, as well as on a teachers’ questionnaire where page creation potential, interactive capacity, problem solving facilities, and task formulation options were assessed. The findings demonstrated that (1) Google Sites may considerably support instructors of undergraduate courses in their efforts to motivate students’ learning and empower them with interactive course materials; (2) virtual education community needs experiential ethic norms for responsible behavior more than prescribed administrative rules of online collective action.
A Decade Later
Authors: Lindberg J. O. , Sahlin Susanne
Published: June 2012

Today, an increased impact of information and communication technologies (ICT) in the society at large has lead teachers to engage in professional development activities related to the use of ICT. Even though this development has been prominent for more than two decades, its long term effects seem complex to determine. This paper is based on interviews with twelve Swedish teachers who participated in a national program for promoting school development and use of ICT in 2000-2001. The program was aligned with the pedagogical approaches set out in the national Swedish curriculum, such as a shift from teaching to learning and giving pupils more responsibility, introducing interdisciplinary approaches to teaching in teams, and a problem based pupils-oriented pedagogy. The analysis of the interviews show that teachers still feel a high degree of appreciation for the program, and that they share a relative agreement of the importance of the program for their teaching with ICT in the last decade. The general intentions of the program to be more concerned with school development and pedagogy rather than technology and ICT seem also to be present today as a long term effect.
From Social Communication to Mathematical Discourse in Social Networking
Authors: Baya’a Nimer , Daher Wajeeh
Published: June 2012

Though some studies describe attempts to integrate Facebook in education, little is known how to use it in mathematics education. This article describes an attempt to populate Facebook with mathematicians from the past, as well as strategies to involve friends with the mathematics of the mathematicians. The experiment shows that Facebook can attract friends to content knowledge, beginning with social talk, and transiting gradually and smoothly to mathematics content knowledge through cultural discourse. The experiment implies that Facebook, representing social networks not intended from the beginning for education, can be adopted successfully for mathematics education.
MapReduce Based Information Retrieval Algorithms for Efficient Ranking of Webpages
Authors: K.G. Srinivasa , Muppalla Anil Kumar , A. Bharghava Varun , M. Amulya
Published: June 2012

In this paper, the authors discuss the MapReduce implementation of crawler, indexer and ranking algorithms in search engines. The proposed algorithms are used in search engines to retrieve results from the World Wide Web. A crawler and an indexer in a MapReduce environment are used to improve the speed of crawling and indexing. The proposed ranking algorithm is an iterative method that makes use of the link structure of the Web and is developed using MapReduce framework to improve the speed of convergence of ranking the WebPages. Categorization is used to retrieve and order the results according to the user choice to personalize the search. A new score is introduced in this paper that is associated with each WebPage and is calculated using user’s query and number of occurrences of the terms in the query in the document corpus. The experiments are conducted on Web graph datasets and the results are compared with the serial versions of crawler, indexer and ranking algorithms.
XRecursive
Authors: Fakharaldien Mohammed Adam Ibrahim , Zain Jasni Mohamed , Sulaiman Norrozila , Herawan Tutut
Published: June 2012

Storing XML documents in a relational database is a promising solution because relational databases are mature and scale very well. They have the advantages that in a relational database XML data and structured data can coexist making it possible to build application that involve both kinds of data with little extra effort. This paper proposes an alternative method named Xrecursive for mapping XML (eXtensible Markup Language) documents to RDB (Relational Databases). The Xrecursive method does not need a DTD (Document Text Definition) or XML schema. Further, it can be applied as a general solution for any XML data. The steps and algorithm of Xrecursive are given in details to describe how to use the storing structure to storage and query XML documents in relational database. The authors report their experimental results on a real database, showing that the performance of their Xrecursive algorithm achieves better results in terms of storage size, insertion time, mapping time, and reconstruction time as compared with that SUCXENT and XParent methods. In overall, Xrecursive performs better in term of query performances as compared to the both methods.
Conversational Learning in Medical Education
Authors: Biswas Tamoghna , Price Amy , Chandra Shivika , Datta Adrija , Biswas Rakesh
Published: June 2012

Traumatic Brain Injury (TBI) survivors frequently experience headaches, often labeled as a psycho-social aftermath of poor adjustment to the reality of decreased brain function, but they may be the result of actual physical sequelae of the TBI. This article illustrates an active experiential learning exercise set in a in a user-driven learning environment using a web interface. Using a conversational learning approach, the discussion was centered around a neurological problem on the topic of chronic persistent headache, which generates a considerable amount of diagnostic uncertainty and interventional dilemma among physicians. The physician members of an online forum shared their viewpoints and insights regarding the topic. By utilizing a blend of experiential and empirical evidence, they collaboratively reached a solution. User-driven learning can serve as a potential learning tool in continuing medical education and also as a valuable educational resource to medical students, helping them develop empathy and real-life problem solving skills. Also, when such conversations involve multiple stakeholders (patients and their relatives, physicians and other health-care providers, medical students, etc.) it can foster a collaborative interface which is the essence of user-driven healthcare.
Disability Studies in Medical Education
Authors: Khetarpal Abha , Singh Satendra
Published: June 2012

Uncompassionate attitudes of doctors can have adverse impact on the already shattered emotional health of a person with disability. The medical conditions or disabilities are seen in isolation from their daily lives. The quality health care is thus compromised. Disability Studies can increase the understanding of the disabled population. The curriculum offered to medical students has an impact on their learning potential. Medical practice influences social conditions and is also influenced by society. The social background of diseases and their causation must be understood within a holistic framework. Disability studies can bring together various disciplines dealing with human pain, pathology treatment, rehabilitation, and coping skills. Medical students must have comprehensive training about complex human behaviour, ethics, and social justice. They must learn the relationships among disease, distress, and disability. Co-existence of disability studies with medicine can transform medical practice, leading to high quality healthcare. Including Disability Studies in medical curriculum would bring Medical Humanities into classrooms.
Helping Patients Help Themselves
Authors: Saquibal Maria Angela M. , Lantz-Garnish Melissa
Published: June 2012

The Johns Hopkins Home Care Group (JHHCG) developed standard protocols for management of patients with chronic heart failure (CHF) and chronic obstructive pulmonary disorder (COPD) in an effort to improve patient outcomes and reduce preventable hospital readmissions. JHHCG implemented Remote Patient Monitoring (RPM), a telemonitoring program customized for the CHF/COPD patient that provides real-time, daily reporting of qualitative and quantitative data as well as patient education/reinforcement. Patient data is trended on a web-based program and overseen by the Disease Management Nurse. Emerging trends are easily identified, allowing for early and appropriate intervention. This program sets itself apart because of the constant communication and aggressive management of the patient as a team (patient, RPM disease manager, field nurse, and physician). Key to the success of home care and RPM is access to and collaboration with a responsive, managing physician that oversees the patient based on their plan of care.
Recovery of a Triple Whiplash Accident
Authors: Doehring Anna Christine
Published: June 2012

Five years ago, the author survived a nasty car accident which brought her to the place of offering healing for others. This paper demonstrates how ‘patient users’ in web space may document a lot of their health details on their own in the form of narratives, as well as meticulously prepared lists that can be shared in ‘user driven health care’ forums and commented on by health professionals who genuinely want to help them. The author’s connection with non-mainstream healing is strong. This author shares that even after getting an MRI by a neuro-radiologist, the testing was not followed up by competent care. It was not carefully explained to her so she understood the implications of the lesions for further activities of daily living by the neuro-radiologist but rather it was left to the chiropractor to explain even though he may be ill-equipped to provide post injury brain care and life skills management. Finally, the narrative points toward the fine balance between finding effective treatment options and the responsibility of providing financially for oneself and family after a debilitating injury.
There is a Human Being Inside Every Patient
Authors: Garrison Julia Fox
Published: June 2012

In this paper, the author recounts her experience in dealing with recovery from a traumatic brain injury. She shares her insights on the dubious practice of patient labeling. The author also affirms her belief in the role a positive outlook plays in recovery.
Disability Studies in Medical Education
Authors: Young Joan W.
Published: June 2012

This commentary discusses the paper by Khetrapal and Singh (2012). The author expands on the current reality of disheveled care, an organ-by-organ approach to “cure,” and a disregard for the emotional and social context of disability and shares her own experiences in trying to push victim-hood aside and take some control of the situation. The author lauds Khetrapal and Singh’s (2012) consideration of a program for disability studies in Medical Education.
An Adaptive JPEG Steganographic Scheme Based on the Block Entropy of DCT Coefficients
Authors: Wang Chang , Ni Jiangqun , Wang Chuntao , Zhang Ruiyu
Published: June 2012

Minimizing the embedding impact is a practically feasible philosophy in designing steganographic systems. The development of steganographic systems can be formulated as the construction of distortion profile reflecting the embedding impact and the design of syndrome coding based on a certain code. The authors devise a new distortion profile exploring both the block complexity and the distortion effect due to flipping and rounding errors, and incorporate it in the framework of syndrome trellis coding (STC) to propose a new JPEG steganographic scheme. The STC provides multiple candidate solutions to embed messages to a block of coefficients while the constructed content-adaptive distortion profile guides the determination of the best solution with minimal distortion effect. The total embedding distortion or impact would be significantly reduced and lead to the less detectability of steganalysis. Extensive experimental results demonstrate that the proposed JPEG steganographic scheme greatly increases the secure embedding capacity against steganalysis and shows significant superiority over some existing JPEG steganographic approaches.
Calm Before the Storm
Authors: Grispos George , Storer Tim , Glisson William Bradley
Published: June 2012

Cloud computing is a rapidly evolving information technology (IT) phenomenon. Rather than procure, deploy, and manage a physical IT infrastructure to host their software applications, organizations are increasingly deploying their infrastructure into remote, virtualized environments, often hosted and managed by third parties. This development has significant implications for digital forensic investigators, equipment vendors, law enforcement, as well as corporate compliance and audit departments, amongst other organizations. Much of digital forensic practice assumes careful control and management of IT assets (particularly data storage) during the conduct of an investigation. This paper summarises the key aspects of cloud computing and analyses how established digital forensic procedures will be invalidated in this new environment, as well as discussing and identifying several new research challenges addressing this changing context.
Daubechies Wavelets Based Robust Audio Fingerprinting for Content-Based Audio Retrieval
Authors: Sun Wei , Lu Zhe-Ming , Yu Fa-Xin , Shen Rong-Jun
Published: June 2012

Audio fingerprinting is the process to obtain a compact content-based signature that summarizes the essence of an audio clip. In general, existing audio fingerprinting schemes based on wavelet transforms are not robust against large linear speed changes. The authors present a novel framework for content-based audio retrieval based on the audio fingerprinting scheme that is robust against large linear speed changes. In the proposed scheme, 8 levels Daubechies wavelet decomposition is adopted for extracting time-frequency features and two fingerprint extraction algorithms are designed. The experimental results from this study are discussed further into the article.
The Influence of Open Source Software Volunteer Developers’ Motivations and Attitudes on Intention to Contribute
Authors: Wu Chorng-Guang , Gerlach James H. , Young Clifford E.
Published: June 2012

This study differs from previous studies on open source software (OSS) developer motivation by drawing upon theories of volunteerism and work motivation to investigate the motives and attitudes of OSS volunteer developers. The role of commitment is specifically interesting, which is well established in the volunteerism and work motivation literature as a predictor of turnover and positively related to work performance, but has been overlooked by OSS researchers. The authors have developed a research model relating motivations, commitment, satisfaction, and length of service to intention to contribute to OSS projects in the future. The research model is evaluated using data from an online survey of 181 OSS volunteer developers. The research results and more discussion of these areas of interest will be evaluated and discussed further in the article.
Investigation on Fatigue Damage and Fracture of Al-5Zn-2Mg High Strength Aluminum Alloy
Authors: Yang Shang Lei , Lin Qin Lin , Xu Chao , Pan Jia Hui
Published: June 2012

The tensile properties and fatigue properties were tested, and the fatigue fracture and damage behaviore of Al-5Zn-2Mg high strength aluminum alloy was investigated by means of optical microscope (OM) and scanning electron microscope (SEM). The results show that the grain of the Al-5Zn-2Mg high strength aluminum alloy is elongated after rolling deformation. The tensile strength of the Al-5Zn-2Mg aluminum alloy is 470MPa. The fatigue life is 6.4×104 cycle in R=0.1, f=99Hz, and σmax=210MPa. The average rate is 0.08μm per cycle from micro crack formed to 8mm of fatigue crack length. The fatigue crack forms in the surface. There are the fatigue striations in the fatigue crack propagation area. The crack velocity is about 2μm per cycle in propagation area. The damaged microstructure with the fatigue loading is loose, that indicates the micro cracks progressively emerge.
Investigation on the Influence of Precipitated Phase on Corrosion Resistance of the Ni-Based Alloys
Authors: Zhao Xue Hui , Bai Zhen Quan , Feng Yao Rong , Fu An Qing
Published: June 2012

The influence of precipitated phases in Ni-based alloys during solid solution aging treatment on the performance of Ni-based alloys was investigated by means of metallographic observation, scanning electron microscope (SEM), and transmission electron microscope (TEM). The variation of microstructure and resultant phases as a result of solid solution aging treatment at different temperatures was discussed. The results show that the heat treatment temperature has significant influences on the type as well as quantity of precipitation phases. Lots of phases precipitated at grain boundaries, the distribution of precipitated phases are characterized by mesh-like structure. The corrosion tests results indicate that there is a potential difference between grains and grain boundaries due to the precipitation of chrome carbide at grain boundaries, resulting in pitting corrosion occurred preferentially at grain boundaries, consequently, the corrosion resistance of Ni-based alloys is reduced. In order to enhance the corrosion resistance of Ni-based alloys, it is expected to control the carbon content in a lower range and proper heat treatment process to avoid large amount precipitation of chrome carbide.
Corrosion Reason Analysis of Ground Gathering Pipelines in High Flow-Rate Gas Condensate Field
Authors: Cai Rui , Han Yan , Zhu Shi Dong , Lin Guan Fa , Bai Zhen Quan
Published: June 2012

Ground gathering pipelines in a high flow-rate gas condensate field were seriously corroded and became perforation only after five months operation. The results of witnessed inspections and analysis showed that T-branch pipe, Elbow and weld were corroded most seriously. The main features of the corrosion were trench-like corrosion pits. In order to clarify the reasons for corrosion so seriously, XRD, SEM, EDS were used to test the film of sample which was taken from the field. The results showed that wall thinning of pipelines was mainly caused by CO2 corrosion combined with erosion and the corrosion product was mainly composed of FeCO3.
Measurement of Dislocation Density in Cold-Drawn Steel Wires by Means of X-Ray Bragg Profiles Analysis
Authors: Yang Fan , Fan Ying Ying , Jin Yi Ming
Published: June 2012

Cold-drawn pearlitic steel wires are widely used in numerous engineering fields. One of the most powerful analysis methods on determining the dislocation character of this heavily cold worked material is to investigate the X–ray diffraction line-profile broadening. Fourier line–broadening analysis in steel wires with near eutectoid composition indicates that with cumulative true strains, the initial dislocation density of 6×1014m-2in the rods increases at least one magnitude in wires. Up to 1.5×1016m-2of dislocation density is found in the ferrite lamella of wires with a true strain of 2.77.
Mechanism Research and Progress of Metal’s Pure Electroplastic Effect
Authors: Li Da Long , Yu En Lin , Liu Zhou Tong
Published: June 2012

The recently researching progress on the microscopic mechanism of metal’s pure electroplastic effect is reviewed. The further research trend about microscopic mechanism of the metal’s pure electroplastic effect is pointed out.
Methyl Trichlorosilane Prepared Methyl Sodium Silicate
Authors: Zhang Guang Xia , Zhang Qiao Yun , Chen Ze Min
Published: June 2012

This paper studied how to prepare Methyl Sodium Silicate from Methyl Trichlorosilane. Methyl trichlorosilane hydrolyzed on the interface of cyclohexane and water, then hydrolysate and sodium hydroxide prepared methyl sodium silicate at molten state. Manufactrue was characterised by XRD, IR, and differential thermal analysis. The experimental results indicate that the best hydrolyze condition was the proportion of methyl trichlorosilane and water was 10~12:100 , at 5°C, lasting for 45min; the best condition of prepared methyl sodium silicate was the proportion of sodium hydroxide and hydrolysate was 2.1~2.3:1, at 300 ~450°C, lasting for 50min. The manufacture was white powder, water-solubility and well stabilization bellow 450°C.
Modulation Structure and Superhardness Effect of VC/TiN Nano-Multilayer Films
Authors: Yue Jian Ling , Shi Wei , Li Ge Yang
Published: June 2012

A series of VC/TiN nano-multilayer films with various TiN layer thicknesses were synthesized by magnetron sputtering method. The relationship between the modulation structure and superhardness effect of the multilayer films were investigated. The results reveal that TiN below a critical layer thickness grows coherently with VC layers in multilayers. Correspondingly, the hardness and elastic modulus of the multilayers increase significantly. The maximum hardness and modulus achieved in these multilayers is 40.7GPa and 328GPa.With further increase in the TiN layer thickness, coherent structure of multilayers are destroyed, resulting in a remarkable decrease of hardness and modulus. The superhardness effect of multilayers is related to the three directional strains generated from the coherent structure.
Preliminary Research of Composite Dressing Fabric
Authors: Lou Ching Wen , Lin Ching Wen , Yang Yi Chang , Lin Chin Mei , Chien Pai Chen , Lin Jia Horng
Published: June 2012

The dressing is used to prevent the bacterial infection when trauma is in contact with the outside air, to inhibit vivo moisture loss and then to accelerate wound healing. So the dressing nonwoven fabric needs to have good vapor permeability, comfortableness and flexibility. In addition, the far infrared fiber has ability to accelerate the wound healing. Therefore, in this research, the far infrared fiber and absorbent cotton were used to produce composite dressing fabric. By changes of blending contents of the above two fibers, the properties of dressing fabrics including vapor permeability, water absorption and flexibility were all evaluated for future application.
Deformation Identification and Tank Capacity Table Calibration of the Storage Tank
Authors: Yao Zhi Peng , Chen Sheng Shuang
Published: June 2012

We build the deformation integral model of the actual storage tank and estimate the deflection parameters by using nonlinear least squares based on experimental data. The accurate calibration value of the tank capacity table of the actual storage tank is calculated.
Preliminary Study in Cross-Linked Gelatin/Alginate Sponges
Authors: Lou Ching Wen , Huang Ming Sheng , Chang Chiung Yun , Lu Chao Tsang , Chen Wen Cheng , Lin Jia Horng
Published: June 2012

Gelatin and alginate are commonly used as biomaterials for making dressings because both of which have hemostasis and high tissue fluid absorption ability. In this study, gelatin and alginate are mixed at various weight ratios, the mixtures of which then undergo the freeze-drying, forming the gelatin/alginate sponges. The resulting sponges serve as the contact surface of dressings, and swelling and degradation tests evaluate the samples in terms of hydrophilicity and absorbility. The pores in the sponges are then observed by a scanning electron microscope (SEM). According to our study, with a decrease in the amount of gelatin, the determined pore size and swelling rate both increase, but the weight loss decreases.
Preparation and Characteristic of the New Magnetic Organic–Inorganic Hybrid Molecularly Imprinted Microsphere Materials
Authors: Yan Hong Yuan , Li Zhao , Hu Tian Hui , Han Ye Hong
Published: June 2012

The new magnetic organic–inorganic hybrid composite imprinted microspheres (MHCIM) based on Fe3O4 nanospheres as core structure and imprinted materials as shell structure have been synthesized by surface molecularly imprinted technique using dummy template strategy. Scanning electron microscopy images showed that the MHCIM were with a diameter distribution (10-120 µm) and cross-linking, spherical shape, and porous morphologies. The resultant MHCIM incorporating molecular recognition and magnetic separation properties can provide a highly selective absorbent materials for trace extraction and isolation target molecules from complicated biological matrix.
Preparation of Size and Morphology Controlled Gold Nanoparticles in Micro-Emulsion and in Aqueous
Authors: Zhang Yan Biao , Zhang Xiao Hui , Yin Hong Zong
Published: June 2012

In this study, we prepared gold nanoparticles in micro-emulsion and found the optimum ratio of micro-emulsion for preparing gold nanoparticles. We reported a new stabilizer for preparing gold nanoparticles in aqueous and found the optimum mass ratio between the stabilizer and chlorauric acid. All gold nanoparticles prepared by these two methods were characterized by transmission electron microscopy, ultraviolet-visible spectrophotometer and synchronous light-scattering spectrophotometer. The results of transmission electron microscopy showed that the diameter range of gold nanoparticles prepared in micro-emulsion was 5~10 nm, and that in aqueous was 10~15 nm. They all had homogeneous distribution and dense structures.
Primary Study of Polyester Composite Nonwoven Applied on Soilless Culture
Authors: Lin Jia Horng , Hsieh Jing Chzi , Chen Jin Mao , Chuang Yu Chun , Li Ting Ting , Lou Ching Wen
Published: June 2012

Currently, all over countries call for greening the earth. Whereas, there is no enough space to be planted by developing countries, owing to their excessive and intensive development. For establishing green globe, every country expects to green forming urban forest in the way of soilless culture, attached with far-infrared fiber in order to promote root growing speed. This study uses polyester (PET) fiber and far-infrared PET (FIR) fiber to form PET/FIR composite nonwoven fabric by nonwoven processing technology. In this process, blending ratio of PET and FIR fibers was varied. Afterwards, moisture retention, air permeability and far-infrared emissivity of PET/FIR composite nonwoven fabric were all tested. The results show that, blending ratio of PET and FIR fibers has no significant influence on moisture retention and air permeability, but obviously impacts on far-infrared emissivity.
Process Parameters Optimization of Direct Synthesis Nano Magnesium Fluoride Powders
Authors: Li Ping , Wang Hai Yang , Wu Wan E , Ling Shuai
Published: June 2012

To reduce average particle size，magnesium fluoride was directly synthesized from MgF2 and NH4F，the product was characterized by X-ray diffractomer，scanning electron microscopy. Orthogonal experiment was used to explore the influences of factors on the average particle size. Found that the effect order of factors on the average particle size is MgCl2 concentration，NH4F concentration，reaction temperature，reaction time，in the optimization of process conditions，average particle size is 23.1 nm.
Reconstruction of Composite Surface Based on CMM Point Data
Authors: He Xue Ming , Kong Li Juan , Hua Chen Liang
Published: June 2012

In this paper, a novel surface reconstruction method is presented to creat a composite surface with point data on surface obtained by CMM. In this method, the 3th non-uniform B-spline algorithm is proposed to reconstruct every single free-form surface on the whole composite surface, and the algorithm for surface blending is proposed to merge every single surface together to achieve the level of G1 continuity. Furthermore, in order to check and visualize the reconstruction model, a special closed-loop RE system is developd by VC++ to constantly guide to measure and reconstruct untill the model fits in with requirements. Examples are included to illustrate the approach.
Research on Damping Properties of TiN Coating Prepared with Arc Ion Plating
Authors: Du Guang Yu , Tan Zhen , Liu Kun , Chai Hao , Ba De Chun
Published: June 2012

In this paper TiN coating was prepared on stainless steel substrate using arc ion plating technique. The coating samples’ phases, surface morphology, micro-determination chemical composition, loss factor and damping ratio were tested. The phases of TiN coating were determined by X-ray diffraction (XRD) technique. The surface morphology and chemical composition of the TiN coating were analyzed by scanning electron microscope (SEM) and Energy Dispersive Spectrometer (EDS), respectively. The damping performance of the samples was measured by hammering activation according half power bandwidth method. The loss factor or damping ratio of samples were obtained according frequency response curve. The results showed that damping performance of samples was considerably improved by TiN coatings.
Research on Phases and Morphology of Fe-Se Powders Synthesized by Hydrothermal Method
Authors: Liu Ke Gao , Ma Zhong Quan , Wang Jian Hua
Published: June 2012

The Fe-Se powders have been prepared by hydrothermal method at temperatures of 160, 180 and 200 °C from FeCl3•6H2O and SeO2. The phases and morphology of the products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) respectively. Experimental results show that, the major phases of these product powders are all FeSe2, the impurity phase Se can be identified in spite of poor crystallinity of all samples. The poor crystallinity becomes seriously at lower synthesizing temperature under the experimental conditions. These product powders consist of grains, rods or flakes with sizes of 20~300nm, among which the product obtained at 180 °C has the smallest size of 20~40 nm.
Research on Properties of Amorphous Cr-C Alloy Coating in Crystallization Evolution
Authors: Li Guo Liang , Jie Xiao Hua , Yang Bi Xue
Published: June 2012

Amorphous Cr–C alloy coating was prepared by electrodepositing. The microhardness of the coating was tested after annealing from 100°C to 800°C and the crystallization evolution was studied by the analysis of X-ray diffraction (XRD) and differential scanning caborimetry (DSC). The results showed that the crystallization evolution of the coating began at 300°C and finished around 450°C, and intermetallic compound Cr7C3and Cr23C6appeared when heat treatment temperature reached around 600°C. The microhardness, corrosion resistance as well as the adhesion of the coating all increased first with the temperature and then dropped until it attained the proper values. The microhardness reached the maximum of 1610HV0.025at 600°C. While the corrosion resistance and the adhesion force attained the peak value at about 400°C.
Research on Self-Cleaning Organic Ti-Si Compound Material
Authors: Feng Yan Wen
Published: June 2012

This study applies the principle of silane coupling agent (SG-Si900) of alkane chain steric hindrance effect ,using SG-Si900, tetrabutyl titanate and TEOS as the main raw materials synthesizes self-cleaning organic Ti-Si compound materials by hydrolysis, constant temperature polycondensation and distillation. To improve the comprehensive performance, we can adjust the synthesis temperature and some main reaction parameters, such as H2O/Si, SG-Si900/TEOS, Si/Ti. The experiment proves that the best preparation conditions of compound materials is at the synthesis temperature of 80°C, the ratio of H2O/Si is 8, the ratio of Si/Ti is 9, the ratio of SG-Si900/TEOS is 1. The viscosity of the compound materials which were mutually soluble with water at any ratio is 40.9 S and the contact angle of water against composite films based glass which are made by pulling method is less than 5°.
Research on Solidification Heat Transfer Model of Copper Horizontal Continuous Casting
Authors: Guo Ming En , Shi Yun Xu , Guo Yu Chen
Published: June 2012

Study the horizontal continuous casting mold solidification heat transfer process is not only to optimize the structure of the mold so that it has a uniform stress field, to improve the quality of slab, to extend the mold life basis, and improve production efficiency and cost-effective method. Therefore, oxygen-free copper horizontal continuous casting process as the research object, the establishment of a level of TU1 billet continuous casting mold solidification heat transfer model for the simulation of oxygen-free copper horizontal continuous casting mold solidification and heat transfer process has laid a theoretical foundation.
Simulation of Compress Buckling Performance of Composite Stiffened Panel
Authors: Shao Qing , He Yu Ting , Zhang Teng , Zhang Hai Wei , Kang Qing Shan
Published: June 2012

Finite element method is applied to analyze the buckling performance of composite stiffened panel. Compress buckling critical loads of six types panels with T or Z-section stiffeners are calculated by FEM. The emulational calculation results show that with same cross section area, critical buckling load of panel with T-section stiffeners increases with the reduction of stiffener pitch and the increase of stiffener numbers, while the buckling load of panel with Z-section stiffeners increases to a certain level and then keep almost changeless. To T-section stiffener panels, the relation between thickness of skin and buckling load is approximately quadratic trinominal. Conclusions obtained can offer a referenced measure for the optimization design and engineering application of the structure.
Sintering Densification in Fabrication of Particle Reinforced Ceramic
Authors: Li Bin , Wang Hong
Published: June 2012

Particle reinforced ceramics can be fabricated by a variety of methods, some of which have their origins in early civilization. The key objective of sintering studies is therefore to understand how the processing variables influence the microstructure evolution. In this way, useful information can be provided for the practical effort of designing processing conditions for producing the required microstructure.
Sound-Absorbing Evaluation on Nylon 6/Low-Melting PET Nonwoven Fabric
Authors: Lin Jia Horng , Hsu Ying Hsuan , Huang Chen Hung , Chuang Yu Chun , Li Ting Ting , Lou Ching Wen
Published: June 2012

In recent years, as quality life improves, people begin to focus on quiet environment. Long-term noise pollution makes trouble of dysphoria and concentrating for people, thus noise-reduction has become an urgent project. This study uses Nylon 6 fibers, blended with different contents of low-melting PET fibers (10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt%), to fabricate Nylon6/ LPET nonwoven fabrics after needle-punching process. Afterwards, their maximum tensile strength, air permeability, sound absorption coefficient were all evaluated. When low-melting PET fibers contain 30 wt%, the nonwoven fabric has the better sound-absorbing property. Herein, the maximum tensile strength reaches 70.79 N and 31.01 N, respectively in CD and MD; the air permeability is about 116.5 [cm3/(cm2/s)]
Design and Debugging of Semi-Self-Automatic Welding Equipment for Bus Roof-Hood Skin
Authors: Gan Hui , Zheng Ying Jie , Tian Qing , Zhang Fang Ling
Published: June 2012

In the research of using arc spot welding to connect roof-hood and skeleton of bus, the semi-self-automatic welding equipment for bus roof-hood has the advantages of easy to operate, high quality, low cost, small deformation of work-piece in heating welding and so on. So, it can be used in enclosing roof-hood and connecting skeleton of bus. This research aims at the solution to some key technical problems of designing, manufacture and debugging of semi-self-automatic welding equipment for bus roof-hood skin, as well as selecting proper connecting construction, improving technology, modifying design and enhancing quality of spot weld. The equipment design includes of gantry frame system, positioning fixture system and welding system. The success of developing semi-self-automatic welding equipment for bus roof-hood will solve the problem of the production technology for bus roof-hood.
Studies on Properties of EKS Heat-Generating Fiber and Yarn
Authors: Cao Jing , Meng Jia Guang , Li Ling
Published: June 2012

This article introduces the EKS heat-generating fiber and its heat mechanism. Studies on properties of EKS heat-generating fiber include the morphological structure, infrared spectrogram and single fiber strength. Studies on properties of EKS heat-generating fiber yarn include yarn strength, fineness uniformity, twist, moisture content, yarn hairiness, and acid and alkali resistance.
Study on Reduction Behavior of Vanadic Titanomagnetite Mixed Coal
Authors: Zhou Lan Hua , Zeng Fu Hong , Wu Wei Gen , Zhang Shu Li
Published: June 2012

The both experiments of DSC-TG of vanadic titanomagnetite bearing coal and reduction of the VTMCM pellet in electric furnace were carried out in order to understand the reduction behavior of vanadic titanomagnetite. The results are found that the absorbing heat is very high and reduction products have not only simple phase but also complex solid solutions in the reduction process of vanadic titanomagnetite. It shows that the process is very complex, simple iron oxide and complex iron ones are reduced step-by-step in parallel, the reduction sequence of simple iron oxides and complex ones are Fe2O3, Fe3O4, FeO and Fe2TiO5, FeTiO3, Fe2TiO4, FeTi2O5, respectively and the required temperature in which iron oxides can well be reduced should be higher than 1300°C.
Design and Experimental Investigation of a Bionic Subsoiler with a Multiplex-Modality Shank
Authors: Zhang Qiang , Yu Lu Lu , Sun Yu Jing , Hao Miao , Zhang Lu , Liu Xian Jun
Published: June 2012

Based on study of animal-claw morphology, a multiplex-modality subsoiler is designed with an intention to decrease its operating resistance. Design concepts and structure scheme of the subsoiler are presented. To analyze the performance of multiplex-modality subsoiler, a multiplex modality sub-soiling shovel and a national standard regulated arc-shape subsoiler (JB/T 9788-1999) are tested in soil bin. Effect of tillage depth and operating speed on the operating resistance of sub-soiling shovels is examined. Type of subsoilers, tillage depth and forward speed, with 2, 3 and 3 levels taken respectively, are considered in experiment. Experiment results show that the multiplex-modality subsoiler, compared with the standard arc-shape subsoiler, sees much lower operating resistance and power requirement against soil. Resistance-decreased index of the multiplex modality subsoiler are 45.3%, 34.4% and 34.2% at 300, 350 and 400mm cutting depth, respectively.
Study on the Microstructures and Properties of Middle-Carbon-Steel Rolled Pieces during Cross Wedge Rolling
Authors: Lv Z.Q. , Qiu P. , Wang B.
Published: June 2012

The rolling process of the three-roll cross wedge rolling with non-uniform temperature field was simulated with the finite element method (FEM). The distribution of the temperature and equivalent strain in radial section of rolled pieces was analyzed. The microstructures and properties of different positions in radial section were investigated. The results indicate that the temperature field and equivalent strain are ring-likely distributing in the radial section of rolled pieces. There are high temperature and small strain in the center. The temperature decreases and the strain increase gradually from the center to surface. The microstructures and properties of rolled pieces are different in different positions. The microstructure in the center consists of pearlite and proeutectoid ferrite, while the surface consists of cementite particles and fine ferrite.