bluuebunny/crossref_metadata_2025 huggingface dataset:
INVESTMENT PRIORITIZING IN HIGH TECH INDUSTRIES BASED ON SWARA-COPRAS APPROACH
Authors: Zolfani Sarfaraz Hashemkhani , Bahrami Mohsen
Published: October 2014

One of the symbols of developed countries is high tech industries. High tech industries have a large margin. One of the priorities of developing countries is the progress in this type of industries. The decisions about priority of developing an industry are so hard that seems it should be seen from different perspectives. This research is focused on decision and policy making in priority of high tech industries in Iran. Two MCDM methods are applied in this research for decision making in this area. SWARA for evaluating and weighting criteria and COPRAS for evaluating and ranking alternatives are applied. Eleven experts from different fields participated in this research to make decision with SWARA and COPRAS. Four high tech industries including Biomedical Micro Electromechanical Systems (BioMEMS), Nano Technology, Biotechnology, and Biomedical Engineering were selected for this research. These industries were selected based on the potential of Iran. Final result shows that Nanotechnology is at the top of priorities in Iran. Authors believe that this methodology can be useful in other issues in this and other areas of research.
THE MODEL FOR EVALUATING THE CRITERIA DESCRIBING THE QUALITY OF THE TRIP BY INTERNATIONAL TRAIN
Authors: Maskeliūnaitė Lijana , Sivilevičius Henrikas
Published: October 2014

The quality of multifaceted objects or phenomena can be hardly described or evaluated by a single criterion. The quality of the trip by train is described by a set of quantitative and qualitative criteria. The influence of all the criteria on the trip by international train may be evaluated by a comprehensive quality index (CQI) or quality index K. An additive model is offered for calculating CQI, which consists of the average weights of the criterion groups, as well as normalized weights and variables of the criteria, showing the correspondence of the real value of each criterion to the best, critical or allowable value. A mathematical model, which may be used for determining the quality of the trip by train based on the criteria describing the elements of the train and technical state of the railway track is also presented. Based on the use of 16 criteria describing the elements of the train and the parameters and the technical state of the railway track, the quantitative estimate KA (multiple criteria index) is obtained. The suggested model and the techniques used in the work may be applied to determining the quality or effectiveness of other objects or processes, which can be described by sets of criteria.
Comment rencontrer la maladie d'idéalité de l'adolescence ?
Authors: Braconnier Alain , Costantino Charlotte
Published: October 2014

Le processus d’adolescence s’accompagne d’une transformation nécessaire des idéaux hérités de l’enfance en des formations d’idéaux secondarisés, porteurs d’espoir et de mouvements mutatifs pour l’adulte en devenir. Du Moi idéal à l’idéal du Moi ? Les auteurs de cet article interrogent ce processus et les achoppements dont témoigne la clinique auprès d’adolescents. Également, ils s’interrogent sur la manière dont peuvent être accompagnés ces adolescents aux prises avec une idéalité tyrannique faute de mieux et utilisée en compensation à la blessure inconsolable que constitue la perte des idéaux infantiles. Quelles postures les professionnels peuvent-ils construire pour une clinique de l’entre-deux ? Quelle écoute leur proposer ?
De la dépendance à la passion en institution gériatrique
Authors: Charazac Pierre-Marie
Published: October 2014

Les états d’allure psychotique qui apparaissent en ehpad ne sont pas plus d’authentiques maladies mentales que ne l’est la « psychose normale » de la mère partageant la dépendance de son nourrisson. La régression des résidents à la relation duelle primitive s’accompagne d’une gamme de manifestations du désir d’amour allant jusqu’à la folie passionnelle. Chez les soignants, l’engagement simultané dans des relations duelles, essentiellement non verbales, et dans les relations triangulaires verbales de la vie institutionnelle peut se solder par un excès identique dans la gratification ou la frustration. La coexistence ou l’exclusion d’un de ces deux registres affecte également les relations institution-familles.
Parcours de soin en psychiatrie adulte : de l'hospitalisation à un suivi ambulatoire, du mouvement régressif à l'autonomie
Authors: Constantin-Kuntz Marie , Pons Élodie , Artaud Benjamin , Zoute Catherine , Tran Jacqueline
Published: October 2014

La prise en charge institutionnelle des psychoses implique un réaménagement constant des relations de dépendance suscitées par la psychopathologie des sujets, afin de les accompagner vers une meilleure autonomie. Cet article décrit un triptyque thérapeutique groupal visant à favoriser l’investissement des soins par le patient et pensé spécifiquement pour soutenir son processus d’autonomisation, processus qui trouve son expression institutionnelle dans le passage de l’hospitalisation vers un suivi ambulatoire.
L'identification narcissique et le soignant dans le travail de soin psychique
Authors: Roussillon René
Published: October 2014

Dans ce texte, l’auteur expose sa réflexion quant à ce qu’il nomme le « malaise dans la psychiatrie ». Bien souvent inconsciente et quasi automatique, l’identification narcissique de base des soignants vis-à-vis de leurs patients est un élément fondamental de toute action thérapeutique. Le soignant est soumis à une forme de « pénétration agie » dans la relation aux patients aux prises avec des souffrances narcissiques identitaires extrêmes. Néanmoins, certaines défenses contre cette identification peuvent empêcher celle-ci d’être « utilisable » dans le soin, voire entraver les capacités soignantes. L’auteur souligne notamment la nécessité primordiale d’un tiers qui peut prendre différentes formes, dans cette relation. Mais alors, comment s’identifier sans se confondre ?
La question de la séparation psychique chez les enfants placés en institution : les enfants du Soldat rose
Authors: Ydire Cécile , Gaudriault Pierre
Published: October 2014

Comment les mesures d’assistance éducative des enfants séparés de leur famille d’origine et placés en institution peuvent-elles contribuer au processus de séparation-individuation ? Les auteurs explorent cette question en proposant l’exemple d’enfants placés dans une mecs (maison d’enfants à caractère social) et bénéficiant d’un atelier d’expression. Leur évolution au cours de l’atelier montre un certain développement psychique qui engage aussi bien l’attitude des thérapeutes du groupe que le positionnement de ce groupe dans l’institution.
La Belle au Bois-Dormant en terre romande
Authors: Cifali Mireille
Published: October 2014

L’article revient sur la publication de la Traumdeutung de Sigmund Freud en 1900, et les travaux de Théodore Flournoy à Genève qui développe à la même époque un intérêt pour les rêves. Y sont évoqués les liens de Freud à Flournoy, et la place de la Suisse romande dans la réception de la psychanalyse.
Contribution de Théodore Flournoy à la découverte de l'inconscient
Authors: Amer Karima
Published: October 2014

Il s’agit d’envisager la contribution de Théodore Flournoy à la découverte de l’inconscient dans les conditions historiques originales de sa production. Nous nous sommes donc intéressée à la généalogie du concept d’inconscient avant Freud, de façon à introduire et développer les travaux qui, en Suisse romande, ont amené à la découverte d’un inconscient subliminal, créateur et mythopoïétique à la fin du xix e  siècle.
Le premier Jung. Prémisses d'une pensée
Authors: Agnel Aimé
Published: October 2014

La lecture des grands philosophes, en particulier celle de Kant, a répondu aux attentes et aux questionnements du jeune Jung et formé son esprit critique (limites de la connaissance, primat de la subjectivité, accent mis sur la pensée personnelle). Devenu psychiatre au Burghölzli de Zurich, Jung adhère aux thèses novatrices de Freud qui confirment et précisent sa découverte des complexes refoulés. Mais son expérience des contraires et sa reconnaissance empirique de la singularité de chaque cas lui font critiquer les généralisations freudiennes, concernant notamment la sexualité et le rêve. Il ne trouve alors d’appui que dans la pensée pragmatique de Théodore Flournoy, dont la méthode lui semble aussi rigoureuse que celle de Freud mais plus ouverte à l’inconnu.
Rencontres de Carl Gustav Jung avec Théodore Flournoy. De l'occulte à la psychose
Authors: Cifali Mireille
Published: October 2014

Derrière la rupture entre Jung et Freud en 1913, il y a la présence de Théodore Flournoy. Entre Jung et Flournoy, des intérêts communs pour l’occulte, l’imagination créatrice, le religieux. Entre Jung et Freud, la dementia praecox et la paranoïa. L’article trace quelques correspondances entre ces trois hommes et les événements auxquels ils ont été mêlés.
Un monde nouveau. L'importance de Oskar Pfister pour la psychanalyse en Suisse
Authors: Noth Isabelle
Published: October 2014

L’histoire et le développement de la psychanalyse en Suisse sont dans leur début fortement marqués par l’activité des pasteurs de Zurich et du psychanalyste Oskar Pfister. Celui-ci est resté en contact épistolaire avec Sigmund Freud pendant près de trente ans et s’est occupé avec beaucoup d’enthousiasme du mouvement, qui lui apparaissait comme un « monde nouveau » et dans lequel il était fortement engagé. Cependant, Pfister était plus qu’un simple adepte fidèle de Freud, c’était aussi une personnalité qui s’intéressait aux questions techniques et avait son jugement indépendant – éventuellement même en désaccord avec Freud. En témoigne la nouvelle édition de sa correspondance avec ses nombreux documents encore inédits.
Freud et la découverte de la sexualité infantile, ou du bon usage de l'observation
Authors: Kamieniak Jean-Pierre
Published: October 2014

Si Freud est prédisposé à l’observation, c’est par un renoncement à la fascination qu’elle exerce qu’il pourra construire sa méthode afin que, armé alors de ses outils théorico-cliniques et de son appareillage conceptuel, il puisse y faire retour et voir alors ce qui toujours se dérobe au regard : la sexualité infantile. C’est le cheminement freudien menant à cette découverte qui se voit restitué ici.
le secret et la prophétie
Authors: Brayard Florent
Published: October 2014

Résumé Le ministre est l’affidé du prince : il prolonge le mystère de sa charge. Pourtant, l’indubitable stupéfaction de Gœbbels, lorsqu’il découvre ce qu’est vraiment le génocide des Juifs d’europe, oblige à renverser le secret, pour le penser comme forme même de son contraire, la prophétie. 1. Les juifs vont à présent être expulsés vers l’Est à partir du Gouvernement général, en commençant par Lublin. Il est employé ici une méthode passablement barbare et qui n’est pas à décrire plus avant, et qui des juifs (...)
Faut-il brûler Legendre ?
Authors: Perreau Bruno
Published: October 2014

Résumé La fable du péril symbolique et de la police familiale.
Application of Synthetic Fibre in Mixture of Asphalt Pavement
Authors: Xu Jing
Published: October 2014

The fiber is a reinforced material which has relatively light texture, high strength, is durable and wear-resistant, and widely used in the mixture of asphalt pavement. Adding different types of fibers in the construction, has a good effect in preventing cracks in the road, the performance of the road will also enhance. After the appropriate amount of fiber added to the asphalt mixture, fiber molecules will continuously and uniformly spread out, this time it will increase the anti-destructive of mixture, and will play an important role in protecting the road, preventing the road fracture. Related practices abroad show that adding fiber in asphalt mixture, every performance of the mixture will increase in different degrees. The diameter and density of different types of fibers will be different, of course, the reinforcing effect are not the same. This article describes application of a synthetic fibre in asphalt mixture, which is polyacrylonitrile fiber.
Research on Ecological Restoration of Wetland Landscape in Reclamation Land Environment
Authors: Cao Lei , Mu Xue Nan
Published: October 2014

This paper first analyses the advantage of coastal reclamation and its impact on the environment, finally proposed reclamation development mode of benign development which can provide the reasonable reference for the further research of reclamation. The article puts forward that exploitation should follow the principles of both protection and development. Through the full investigation of biological resources, wetland environmental carrying capacity of natural attributes, and huge demand and utilization situation of wetland and other social attributes of the reclamation, to analyze of wetland ecosystem service function, so as to accurately judge the reclamation suitability. Therefore, the reclamation is not only to meet the requirements of economic development, more attention should be paid to the protection of coastal wetland region.
Automatic Monitored Control System Design of Solar Greenhouse Environment Based on Single-Chip and King-View
Authors: Yang Xue Kun , Zhu Gang , Jiang Xiao , Cao Min Gang
Published: October 2014

Solar greenhouse is a major form applied to the facility agriculture industry of China currently, which has made historical contribution to the insurance of vegetable supply and farmers’ income increase. On the basis of the full study of environmental factors closely related to the growth and development of plants and the status quo of China’s solar greenhouse technology, this paper develops an automatic monitored control system of solar greenhouse environment based on single-chip and king-view, thus realizing the supervision and control over the environmental factor data such as the temperature and humidity of indoor air, humidity of soil and illumination. The test has shown that the designed function of the system has been achieved with stable and reliable operation as well as friendly human-computer interaction interface, so as to meet the requirements of timeliness, stability and reliability of the solar greenhouse supervision system.
Research on the Preparation of Organic Modified Bentonite and the Control of Biological Invasion in Ballast Water
Authors: Pang Yan Hua , Cao Ji Juan , Sun Bing
Published: October 2014

In this research, the effect of modified bentonite on removing harmful organisms in ballast water was discussed using HDTMA+ modified bentonite as flocculating material, and Alexandrium tamarense, Nitzchia closterium, and Photobacterium phosphoreum as the objects of harmful organisms, and also through an observation of the reaction mechanism between HDTMA+ and bentonite with Fourier transform infrared spectroscopy (FTIR). The result showed that there was an effective combination of HDTMA+ with bentonite, and the modified organic bentonite possessed a powerful ability to remove harmful organisms. The removal rate against Alexandrium tamarense within 24h was greater than 85% if the dosage of the organic bentonite was 0.03 g/L; the removal rate against Nitzchia closterium was approximate to 80% if the dosage was 0.06 g/L; the luminous intensity could not be displayed by luminescent bacteria under the condition of concentration 0.30 g/L, and also the original soil with modification did not shown a significant removal effect under the same dosage. Therefore, it was concluded that the conditions such as aging time, organic bentonite’s particle size, and HDTMA+ dosage were the important factors affecting the harmful biological removal efficiency.
Research on Integration Model of Urban Spatial Layout and Traffic Demand
Authors: Jiang Wen Jin , Zhou Hao
Published: October 2014

There is interaction between urban spatial layout and traffic demands. On one hand, urban spatial layout and land utilization is the source of traffic demands. The scale of traffic demands depends on location, population and post of urban space and land utilization. On the other hand, traffic demand has indirect effect on urban space and land utilization, for example, the increase of traffic demand requests improving and constructing the infrastructures of transportation systems, which makes transportation accessibility of land utilization increase and promotes the improvement of land utilization value. And it makes the basic properties of land change. The paper takes Shanghai as an example, and establishes the integration model of urban spatial layout and traffic demand in Shanghai which includes two modules, land model and traffic demand model.
New Design of LED Package Based on Mathematical Model
Authors: Li Ke , Geng Qi Qi , Zheng Zhen Yan
Published: October 2014

In twenty-first century of the fierce competition, the employment of college students struggles, graduation of many college students means unemployment. Under such a historical background, this paper scientifically evaluates on college students personal ability based, by using way of studying the chart data and the from of contrasts. The key of this paper is to help students to make up for the lack of ability through evaluation results of mathematical model. In addition, I also hope hat the mathematical comprehensive evaluation model of personal ability is used to nature, science, social and economic fields.
Design of Laboratory Management System Based on Web
Authors: Zhang Chun Yan
Published: October 2014

The laboratory is an important part in teaching and research schools, which is an important facility for reaction of school teaching strength and scale.With the continuous improvement of the level of teaching in Colleges and Universities, laboratory work in university teaching position gradually increased, which directly affects the development of practice teaching.According to the traditional artificial management mode,the information-based management mode greatly improves the management of laboratory results, to improve the efficiency of the laboratory, save manpower and practice, thus the sharing of teaching resources to achieve the better.In this paper,it takes analysis and discussion of related problems based on the web technology to design the school laboratory management system.
Design and Implementation of Router Based on Wireless Sensor Network
Authors: Wang Kun , Gan Lu
Published: October 2014

This paper design and realize a uplink single hop and multi hop data transmission using the Zigbee technical, and the system can realize the downlink overall and single equipment control network. The Wireless sensor network system is mainly used in data transmission and control. The network is debugged and tested. The final network operation and the test results show that the overall network running in good condition, the design realizes all functions and achieve the desired results.
Application of Fluid Mechanics in Adaptive Flexible Manufacturing Industry
Authors: Wang Jia Gui , He Jian Hua
Published: October 2014

With the rapid development of social economy background, the large scale talents flow in the international and domestic have become important social phenomenon. At home and abroad, the research on talents mobility and human resources management is more and more in-depth. Through the optimal analysis of talent flow model, the flexible management applications in the flexible human resources management, to scientific analyze the coupling relationship between them that will provide human resources management talent optimize configuration, it will make positive contributions to achieve maximize the benefits.
Research and Improvement of Database Storage Method
Authors: Zeng Feng Sheng
Published: October 2014

This paper presents a massive data storage and parallel processing method based on MPP architecture, and put forward full persistent data storage way from the client to request, and the integration the idea of Map/Reduce, the system will be distributed to each data node, the data has high scalability, high availability, high concurrency. And the simulation test and verifies the feasibility of mass data storage mode by building a distributed data node.
Research on Informational Strategic Focus of Transportation Enterprise
Authors: Zhang Xu Mei
Published: October 2014

Combining with the characteristics of the transportation enterprise and the literatures, the SWOT analysis method is used to make the environmental analysis, factors determining and the strategic decision. The external environment analysis in environmental analysis uses macro environment PEST analysis method to determine the threats and opportunities, while the internal environment analysis uses the method of enterprise resources determine its internal strengths and weaknesses. Based on that, external evaluation matrix EFE and internal evaluation matrix IFE are set up, and then determine the key factors. Finally set up entirely the SWOT analysis radar map and determine the corresponding strategic focus.
Integration of GIS and BIM in Metro Construction
Authors: Wang Qian Kun , Li Peng , Xiao Ya Ping , Liu Zhi Gang
Published: October 2014

With application and popularization of information modeling technology, both Geographic Information Systems (GIS) and Building Information Modeling (BIM) could represent three dimensional models in different fields. By introducing application features of GIS and BIM in Metro construction, this paper presents such a thought that effective combination of GIS and BIM may play a role at different stages in metro construction.
Body Freedom Flutter Study and Passive Flutter Suppression for a High Aspect Ratio Flying Wing Model
Authors: Li Yuan Dong , Zhang Xin Ping , Gu Ying Song , Yang Zhi Chun
Published: October 2014

Normal mode and flutter analysis are conducted for a high aspect ratio aft swept flying wing model, and body freedom flutter is found to be the most critical aeroelastic instability for this air vehicle model. To determine the influence of various kinds of design parameters on BFF characteristics, eight factors are considered in the parametric study, i.e. wing vertical bending stiffness, weight and center of gravity of the wing root payload and the wing tip mass balance, wing half span, aft swept angle and the station of wing body blended line. After the parametric analysis, the mass and center of gravity of the wing root payload are selected as design variables, and the baseline model is utilized in the design optimization study subject to critical flutter speed constraint. Finally, the optimal mass balance design is suggested to suppress the body freedom flutter phenomenon passively and maximize the payload.
Study on Process and Defect of Arc Welding
Authors: Zhang Li Min
Published: October 2014

This paper welds a layer of austenitic stainless steel (SS316L) on specimen of low carbon steel (C15) with a cylindrical surface using MIG Technology in the experiment. The sample was upsetting experiment, cracks and material forming observation respectively using embossing punch, no lubrication flat punch and lubrication flat punch under the condition of 750 °C, 900 °C and 1050 °C. The paper research on forming mechanism of the specimen under laboratory conditions based on the experimental results, the axial symmetry theory model and Numerical Simulation.
Flotation Separation of Nanyang Kyanite Ore
Authors: Jin Jun Xun , Gao Hui Min , Liu Guo Ju , Zhao Cheng Ming
Published: October 2014

It is a developing trend for the refractory materials industry that producing refractories using the kyanite ore with minute amounts of titanium. The tests were conducted with an ore sample by a mechanical flotation cell. The isoelectric point of the kyanite ore was found to be pH 6.6. Petroleum sulfonate was found to be an effective collector for kyanite flotation. 55.85% Al2O3is produced with 84.41% kyanite recovery by grinding, desliming, reverse flotation and kyanite flotation.
Numerical Simulation of Heat Pipe Heat Exchanger in Dedicated Ventilation System
Authors: Wu Gui Xiang , Wang Xiao Zhi , Yang Tao , You Da , Chen Wen Jiang
Published: October 2014

Independent dedicated ventilation system is an advanced air conditioning system developed in last few years. There is little research on the design of the system at present. This paper establishes control equation of flow and temperature field based on the energy transmission theory and simulates heat pipe independent dedicated ventilation system using special flow field numerical simulation software. In pretreatment process of FLUENT, this paper uses unstructured six prisms and parallelepiped grid and encrypts grid which makes the result of calculation is more accurate. The simulation uses residual of 10-5 high precision to calculate, and obtains the residual convergence curve. Curve analysis shows that the calculation is very reliable and stable. In post-treatment process, it uses FLUENT results processing module, obtains the temperature flow pattern of heat exchanger independent dedicated ventilation system. We take one of the root canal for analysis. The result shows that the temperature in both sides of the tube is higher, and the temperature through the tube and close to the wall part is lower. It is coincide with the actual working condition of tube ventilation and heat dissipation outside the pipe. This result proves the accuracy of the numerical simulation and provides the reliable theory basis for the design of heat pipe heat exchanger independent dedicated ventilation system.
Fatigue Damage Detection Using Smart Senor
Authors: Fu Wen Hao
Published: October 2014

In civil engineering field, huge amount of structural health monitoring work is required throughout the service life of the structures. In pursuing an autonomous, real-time and online non-destructive evaluation (NDE) method, piezo-impedance transducer (PZT) has attracted more and more attention from researchers in recent years. Although up to now, the real application of Electro-Mechanical Impedance (EMI) method with PZT on structure health monitoring is not utilized, experiments results shows its impressive potential.
Research on Fuzzy Mathematics in PID Control
Authors: Chen Hao , Li Zhuo Qi
Published: October 2014

Aiming at the limitation of traditional PID algorithm in the field of control, the fuzzy control theory and traditional PID control algorithm are combined to realize parameter self-tuning function, a fuzzy self-tuning PID controller, and this algorithm is analyzed in-depth study. It provides a new solution of modern industrial control problem that combining with fuzzy control technology and PID control technology. The FPGA has high integration, short development cycle, the characteristics of strong reusability; fuzzy PID controller has a good practical value and optimistic application prospect based on FPGA.
Pile Defect Intelligent Identification Based on Wavelet Analysis and Neural Networks
Authors: Zhang Guang , Jiang Xiu Ling , Liu Zhi Jun , Chen Chang Chuan
Published: October 2014

In view of the phenomenon of pile test results are greatly influenced by human , the paper puts forward that to combine wavelet analysis and neural network for pile testing, use the extreme value point of the wavelet analysis as the input of neural networks, depending on the output codes to determine the defect types and position. And it is believed that there is a good potential for use in future.
Fault Line Selection of Power System Based on Dual-Tree Complex Wavelet
Authors: Sun Xia , Li Xiang
Published: October 2014

Through analysis of various concept methods, developing route selection device based on double tree complex wavelet and transient energy, use the method based on transient component can improve line selection accuracy effectively. sensitivity and directional selectivity can improved by using dual tree complex wavelet transform than using discrete wavelet translation, the method can’t infect by the line of power system and the condition of the fault line. The simulation results show that by using the dual tree complex wavelet analysis in suitable scale can select the fault line correctly.
Research on Smart Residential Community and Power Management System
Authors: Jiang Shan
Published: October 2014

This paper analyses the present situation of residential energy management system, designed a kind of intelligent electric energy management system based on CAN bus. The system uses the underlying field level, management level and upper management. The field realize the real-time network measurement with a special electric energy metering chip AD7755 and a AD/ conversion function microprocessor STM32 as the core; through the CAN bus timing or random copy electric energy data, its purpose is to use modern network communication technology, and establish a residential comprehensive management center and security system, information service system and Home Furnishing intelligent integrated system.
Layout Design and Verification of the Voltage Reference Module in the Auto Electronic Ignition Control Chip
Authors: Yang Ying , Zhang Yong Feng , Xiao Ying Ying
Published: October 2014

This article describes the layout design and verification of the input module of a auto electronic ignition chip used in the field of automotive engineering. Using standard bipolar technology, full-custom design on the input module placement and routing, and completed the back-end verification. This chip has low power consumption, low cost, and stable performance.
Particle Size Effect on FeS Spontaneous Combustion Characters in Petroleum
Authors: Yang Man , Chen Xian Feng , Shang Yu Jiao , Bao Ren Dong
Published: October 2014

In order to evaluate the effect of particle size on FeS Spontaneous Combustion Characters, four different grain diameters of FeS particles (100, 170, 220, 320-mesh) were detected in the experiment. The reaction process at heating rates of 5°C /min in air flow from 30°C to 900°C were studied by TG-DSC and oxidation kinetic analysis. The activation energies of samples were calculated by the Coats-Redfern method. It is found that four reaction mechanisms are involved in FeS spontaneous combustion for different particle sizes; the activation energy values change from 307.4 to 398.05 kJ/mol; larger size particles have higher activation energy values; so grain diameters larger than 100-mesh size samples are less inclined to be oxidized and self-ignited.
Heat Conduction Analysis on the Evaporator in Gravity Heat Pipe of Heavy Oil Wellbore
Authors: Li Wei , Tian Xin Yuan
Published: October 2014

A technology for using petroleum deposit’s energy and the principle of medium’s phase change heat transfer to make hollow rod into heat pipe, which transferred heat from bottom to top in wellbore by using it without extra energy is proposed. It can improve the temprature distribution of the fluid at the upper part of wellbore; therefore paraffin deposition and flocculation are improved. In this paper, heat transfer model of liquid film and liquid pool is established by means of the equation of N-S.Based on the principle of micro unit in liquid film’s thermal equilibrium and liquid pool’s heat transfer.By analying the heat transfer coeffcients of this two part,it was found out that gravity heat pipe had better heat transfer performance with increasing the length of liquid film in evaporator,improving the flow rate of inner steam and strengthening nucleate boiling of liquid pool,when the requirement of the continuous circulation of two-phase flow was achieved.
Influence of Temperature and Wavelength on Optical Behavior of Copper Alloys
Authors: Mann Vincent , Hugger Florian , Roth Stephan , Schmidt Michael
Published: October 2014

Quantitative measured values for absorption of copper and its alloys are jet unknown in the temperature range between 30 °C and 500 °C which has to be passed before material melts in the initial phase of laser beam welding. Thus this paper investigates temperature and wavelength dependent absorption for VIS and IR wavelengths. For this purpose specimens of copper and copper alloys are heated up and reflected laser light from the surface is measured by using an Ulbricht sphere in combination with a photodiode. During welding processes inert gases are in use to reduce oxidation. Hence the influence of shielding gases on the absorption will also be taken into account during the heating process of the specimens. Consequently this paper provides results for the temperature dependent absorption of copper and copper alloys for different wavelengths at atmospheric conditions and argon shielding.
Sustainable Development Achievements in a Database System
Authors: Băișan Cristina Elena , Gheorghe Marian
Published: October 2014

Various sustainable developments and related matters have been accomplished [1-11, etc]. Sustainable development achievements enhance a balance between society, environment and economy conditions. This paper presents the relevant characteristics of different existing sustainable development projects, as support for the completion of new, innovative sustainable development achievements, selection criteria and building up a database system. The design, production, commercialization, use, recovering of a product, service or system must be achieved so that to satisfy the developer, producer and user needs i.e. to be multifunctional, with recycled components, resource-efficient, eco-friendly, easy to use, reusable, recyclable etc, by case.
The Method of Design and Manufacturing of the Gear Hobbing Cutter with Bulges
Authors: Gherghina George , Tutunea Dragos , Popa Dragos , Bogdan Mihaela Liana , Lambrache Nicolas
Published: October 2014

This paper presents the design and manufacturing aspects of these tools. Constructive and geometric peculiarities are exposed for the gear hobbing cutter with large modules. The design of the gear hobbing cutter with modified profile in the parametrized variant permits a rapid adaptation to any conditions. Depending on the particular constructive geometric of the gear hobbing cutter profile it was created the virtual prototype (solid model). This is analyzed and, in the final stage, it is manufactured [1,2,3,4,] . Manufacturing techniques of the tool include the obtaining of the profiled knifes for clearance (achieved by increased 50:1 templates on the machine for profiled tools) and the special control templates (obtained on templates milling machine F. Studer) [. This paper presents the method of obtaining of the gear hobbing cutter profile by adjusting the corresponding shape of the abrasive disc to optimize the grinding conditions [. It is recomended the method which use the changing of the rack reference imposed by technical and functional conditions [7,8,.
Experimental Determination of Force and Deformation Stress in Nanostructuring Aluminum by Multiaxial Forging Method
Authors: Cazac Alin Marian , Bejinariu Costică , Baciu Constantin , Toma Stefan Lucian , Florea Costel Dorel
Published: October 2014

This Paper Aims to Determine by Experiment Total Force and Stress of Deformation Depending on Punch Stroke and the Level of Deformation on Severe Plastic Deformation of Aluminum by Multiaxial Cold Forging. the Deformation Force in Multiaxial Forging Depends on a Number of Parameters of whom the most Important are: Strain, the Flow Force of Aluminum, Deformation Speed, the Friction between the Material and the Die, Shape and Size of Die, the Dimensions of Deform Profile, Shape and Dimensions of Workpiece, Temperature Variation during the Process, Physical and Mechanical Properties of the Workpiece Material, the Structural Inhomogeneity of Workpiece Material. the Deformation Process is Discontinuous and Includes Deformation Processes that Define a Cycle of Severe Plastic Deformation. this Paper Aims to Determine the Force and Stress Corresponding to the First 12 Cycles of Severe Plastic Deformation.
An Optimized Methodology for Process Quality Analysis and Monitoring Activities in Case of Sheet Metal Bearing Cages Stamping
Authors: Rȋpanu Marius Ionuţ , Nagîț Gheorghe , Merticaru Vasile , Mihalache Marius Andrei , Boca Mihai , Huşanu Valerica
Published: October 2014

The quality of bearing cages is influenced by a variety of technological factors which depend on the material they are manufactured of, on the hydraulic press and on the punching-stamping die. The paper presents an optimized methodology introduced and developed for process quality analysis and monitoring activities involved in the stamping technology in order to manufacture roller bearing steel cages. The stamping technology presented in this case study is part of a larger industrial process of manufacturing steel window-type cages for spherical roller bearings with two rows of symmetrical rollers. This approach aims to improve a similar process quality analysis and monitoring activities which were previously developed on the basis of cause & effect analyses made upon the influence of qualitative and quantitative parameters involved in a quality and accurate stamping process.
Experimental Study on Unsynchronized Ultrasonic Assistance of Electro Discharge Machining Process
Authors: Nanu Sergiu , Marinescu Niculae , Ghiculescu Daniel
Published: October 2014

The paper deals with experimental study on unsynchronised (out of phase) ultrasonic assistance (US) of electrical discharge machining (EDM) process, considering finishing and semi-finishing operations. The main output technological parameters at classic EDM are not as good as they are expected due to instability of material removal process and long duration of gas bubble formed around plasma channel. The US longitudinal oscillations of electrode-tool produce cavitation within frontal working gap leading to collective implosion of gas bubbles. This hydraulic phenomenon can remove the workpiece material in solid or plastic state or even in liquid state. The goal of our study is to emphasize and quantify the influence of US assistance into EDM process and also to determine a correlation between EDM and US parameters, considering an unsynchronised condition. Nevertheless some optimization conditions of working parameters are needed to attain notable expected performances. From experimental data analysis, it can be noticed that significant growth in process productivity is achieved when EDM process frequency is equal with the ultrasonic assistance frequency.
Aspects Regarding the Surface Quality of the Laser Engraved Glass
Authors: Diciuc Vlad , Melian Ciprian , Lobonţiu Mircea
Published: October 2014

The use of laser engraving equipment for marking on certain products the expiry date, the bar code as well as customizing them, represents an efficient and non-polluting method. This method is very challenging from the technological point of view and with a lot of process variables that demand research. The current paper tackles the quality of the laser engraved glass in CO2 environment, as a function of the following parameters: the lasers power and the lasers pulse length. Based on the experimental results a quality system is being proposed which relies on the visual examination of the craters, of the top area of the crater and the quantity of excess material surrounding them. The research method used in the current paper is the experiment and the comparative analysis of the experimental results.
Equipment for the Study of Machinability by Drilling under Constant Force Feed
Authors: Manole Vasile , Slătineanu Laurenţiu , Bădănac Ana , Hodorogea Dragoș , Bosoancă Gheorghe
Published: October 2014

The problem of machinability evaluation by constant force feed drilling was addressed in this paper. One of the objectives of the research presented in this paper was the decrease of the influence exerted by the presence of chips in drill channels and achieving equipment able to correspond to such a requirement. The use of value analysis method allowed identifying a solution of device able to ensure simpler conditions for materialization of test corresponding to machinability evaluation by drilling under constant force feed. One analyzed various machining schemas for achieving a drilling process. Equipment for drilling under constant force feed was designed. Essentially, a vertical feed motion up down could be achieved by the device for clamping the test piece, while the drilling tool achieves the rotation motion. The feed motion is generated under the action of some weights. One also developed a preliminary experimental research for verifying the conditions of equipment operation.
Experimental Research on Ultrasonically Welded Copper
Authors: Apetrei Lăcrămioara , Rață Vasile , Severin Traian
Published: October 2014

Ultrasonic processing proves particularly effective in leading branches of technology, such as: precision mechanics, optics, electrical engineering, nuclear technology etc. High-strength joints, short machining time and low energy consumption are only three of the main ultrasonic welding advantages that determined research intensification in this field. This paper presents experimental data that illustrates the interdependence between some process parameters and their influence on the joint resistance of the copper sheet ultrasonically welded. Due to the surface friction energy, which is generated in the ultrasonic welding process, some intermolecular connections are broken and other are new are created. In order to demonstrate the quality of the ultrasonically welded copper, there were made macro and microstructural analysis that are proving an excellent metallurgical bonding. The results of microhardness tests, that were made in five different points, on each welded copper sample, revealed the ultrasonic welding process quality showing that the welded material hardness doesn't change. The copper welding experiments were made at the National Research and Development Institute for Welding and Material Testing (ISIM) Timişoara.
ECDM Drilling Process Analysis via Taguchi Method
Authors: Coteaţă Margareta , Creţu Gheorghe
Published: October 2014

Electrochemical discharge machining (ECDM) is based on synergetic action of anodic dissolution with erosive effect of electrical discharges in material removal process. Drilling by ECDM can be applied for hard to be cut materials, when no drilling by cutting or no EDM machine is available.
Biocomposites - State of the Art
Authors: Hodorogea Dragos
Published: October 2014

Due to ecological and sustainability constraints, in late years we see great achievements in green technology in the field of materials science. The development of high-performance biocomposites (made from natural resources) is increasing worldwide. The challenge in working with natural fiber reinforced composites is the large spectrum of possibilities for making them.Biocomposites properties are influenced by a number of variables, including the fiber type, environmental conditions (where the plant fibers are sourced), processing methods, and any modification of the fiber. It is well known that recently exists a large interest in the industrial applications of composites containing biofibers reinforced with biopolymers. The characteristics of reinforcing fibers used in biocomposites, including source, type, structure, composition, as well as mechanical properties, will be reviewed. The variety of biocomposite processing techniques as well as the factors (moisture content, fiber type and content, coupling agents and their influence on composites properties) affecting these processes will be discussed.Techniques for processing the natural fiber reinforced composites will be discussed based on thermoplastic matrices (compression molding, extrusion, injection molding, and thermoforming), and thermosets (resin transfermolding, sheet molding compound). Their influence on mechanical performance (tensile, flexural and impact properties) will be evaluated. Finally, the work will conclude with recent developments and future trends of biocomposites.
Investigations Regarding the Influence of Surface Topography on Emissive Properties of Material
Authors: Wieczorowski Michal , Rozanski Leszek , Gapinski Bartosz , Krolczyk M. Grzegorz
Published: October 2014

In the paper analysis of surface topography influence on emissivity of metals was shown. This was performed for infrared band comprising wavelength region of 7.5 13 micrometers. Appropriate characterization and description of object emissivity has a crucial influence on accuracy of IR system for remote temperature measurement, e.g. IR thermography or pyrometry. These properties depend on many factors, including surface topography of material, where especially cavities play a very important role. In references so far emissivity are discussed mainly as influence of type of material (metal, dielectric), its temperature, wavelength or direction of emission. In the paper characterizing emissivity of construction materials in connection with 3D surface topography.
Improvement of Properties of Aluminum Bronze CuAl7Mn3 by Heat Treatments
Authors: Achiţei Dragoş Cristian , Vizureanu Petrică , Minea Alina Adriana , Al Bakri Abdullah Mohd Mustafa , Minciună Mirabela Georgiana , Sandu Andrei Victor
Published: October 2014

Top domains of technology, such as aerospace, nuclear technology, electrical engineering, electronics, energy, require materials and alloys with special properties: superconductivity, superplasticity, high resistance to corrosion, shape memory, exceptional mechanical strength, magnetism, and resistivity. Aluminum bronzes are bronze with very good mechanical and chemical properties, which are factory profiles, strips, bearings, gears, valves, parts and fittings for chemical and food industry, gears, water pump housings, mainly parts corrosion resistant in aggressive environments.
Combined Constructive Solutions for Increasing Cast C-Frame Stiffness of Mechanical Presses
Authors: Cioară Romeo , Dan Ioan
Published: October 2014

With responsibility as its central element, sustainable development is a concept that calls for permanently increasing information usage while minimising material and energy consumption. Waste – particularly of energy – cannot last, and is evidently not a long-term solution. In the field of machine-tools structures deemed sustainable fulfil their functions for a sufficiently long period of time, while consuming as small as possible amounts of energy and including a small as possible volume of material. In a machine-tool, as in numerous other industrial products, energy consumption in deployment significantly exceeds that of their manufacturing. A conclusive example is that of mechanical presses, machine-tools with long service lives and considerable deployment energy consumption. With increasing stiffness of presses, deployment energy consumption is smaller. Detailed research conducted by the authors has yielded a series of innovative constructive solutions for mechanical press cast C-frames – frames with ribbed lateral walls, frames with pre-stressed front columns and shortened frames – with increased stiffness and minimum additional metal consumption as their main relevant characteristics. The finite element based study of these novel constructive solutions has revealed stiffness increases of 1 to 12 %, significantly depending on the type of constructive solution. The novel solutions can be combined in view of cumulating the obtained positive effects. The paper presents relevant examples of such combined constructive solutions and the results related to stiffness increase obtained by means of the conducted FEA study.
Functional Assessments of Dynamics of the Vibratory-Driven Equipments with Belt Transmissions
Authors: Debeleac Carmen , Simionescu Cristian , Năstac Silviu
Published: October 2014

This study deals with the problematic of vibratory equipments driving system taking into account both the requirements of functional performances related to the final technological quality, and the dynamic phenomenon appears during the working cycle according to the transmission way from the energy source to the vibration generator. This analysis provides useful assessments for equipment design no matter the technological machine type. Hereby this study tries to dignify the dynamic state deviations induced by the components characteristics of the driven equipment, and to reveal the means for minimizing the parameters variances.