bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of the Impact of Nursing Interruptions on Pharmacist Workflow and Efficiency
Authors: Alhammad Abdullah M. , Stashek Chad S. , Churchill William , Fanikos John
Published: January 2016

Background

Interruptions in the pharmacy setting by nurses are common. While the source of nurse-generated interruptions may be variable, the appropriateness of these interruptions remains unknown.

Objective

To evaluate the impact and appropriateness of nursing interruptions on pharmacist workflow resulting from telephone calls, alphanumeric pagers, and in-person interactions.

Methods

An electronic data collection tool was created to record nursing-based interruptions of pharmacists through telephone calls, pages, and in-person interactions. The data were collected during all pharmacist shifts (day, evening, and night) over 14 days in 2 separate, 7-day data collection periods in December 2011 and January 2012. The data collection form comprised 7 questions that addressed the purpose of this study, including the shift; unit location; type, nature, and appropriateness of the interruption; estimated time spent; and whether the interruption was duplicated.

Results

A total of 3,531 interruptions were documented during the 14 days of data collection; an average of 252 data points per day were recorded by the pharmacists. About 55% of the interruptions were initiated through alphanumeric pagers, 33% from phone calls, and 12% from face-to-face interactions. Sixty-three percent of the total interruptions were annotated as appropriate interruptions, while 37% of were annotated as inappropriate interruptions. The total time spent addressing the interruptions deemed inappropriate was 75 hours during the study period.

Conclusion

Distinct opportunities exist for process improvement changes, as well as educational and behavioral changes, that would greatly benefit nursing and pharmacy staff.
Maximizing the Shadowing Experience: A Guidance Document
Authors: Irby Barbara T. , Sue Caron A. , Smith Kelly M. , Alwan Michael
Published: January 2016

Job shadowing is an excellent way to learn more about the pharmacy profession. The shadowing individuals gain a greater sense of the role pharmacists play in the health care team and are exposed to the variety of roles that are filled by pharmacists. Job shadowing is also an important way for pharmacists to demonstrate the value of the profession and recruit talented individuals to their institution. However, there are several important considerations to ensure that the shadowing experience is beneficial for the individual, is a positive experience for the sponsor, and is compliant with the host institution's policies and procedures. The goal of this article is to prepare a potential host site for developing and maintaining a successful job shadow experience.
Is This the First Adherence-Focused Multidisciplinary Care Team App?
Authors: Felkey Bill G. , Fox Brent I.
Published: January 2016

We have mentioned the need for a multidisciplinary app in health care in at least 3 of our previous columns. We have also written about the Internet of Things (IoT) and how this exploding technology change will impact us all. In case you need a refresher, we believe that there are 5 new rights in health care that can be supported by mobile connectivity.
The greatest prime function of real variable
Authors: Qarawani Maher
Published: January 2016

In this paper, we introduce a new function which we call the greatest prime function. In addition, we give an extension of the function to , and then use this definition to prove some inequalities and properties of this function. Some illustrative examples are given.
Certain types of linear operators on probabilistic Hilbert space
Authors: Al-Muttalibi Rana , M.A Ali Radhi
Published: January 2016

The purpose of this paper is to introduce some definitions, properties and basic results that show the relation between F-bounded of linear operator in probabilistic Hilbert space and bounded operator in norm. In the paper, we prove that the adjoint operator in probabilistic Hilbert space is bounded. The notion of the continuous operators in probabilistic Hilbert space and some basic results are given. In addition, we note that every operator in probabilistic real Hilbert space is a self-adjoint Operator.
An integral representation of the Catalan numbers
Authors: Shi Xiao-Ting , Liu Fang-Fang , Qi Feng
Published: January 2016

In the paper, the authors establish an integral representation of the Catalan numbers, connect the Catalan numbers with the (logarithmically) complete monotonicity, and pose an open problem on the logarithmically complete monotonicity of a function involving ratio of gamma functions.
Power convexity of a class of Hessian equations in the ball
Authors: Ye Yunhua
Published: January 2016

Power convexities of a class of Hessian equations are considered in this paper. It is proved that some power functions of the smooth admissible solutions to the Hessian equations are strictly convex in the ball. For a special case of the equation, a lower bound principal curvature and Gaussian curvature estimates are given.
On inequalities of Hermite-Hadamard type for co-ordinated \((\alpha_1,m_1)\)-\((\alpha_2,m_2)\)-convex functions
Authors: Bai Shu-Ping , Sun Jian , Qi Feng
Published: January 2016

In the paper, the authors establish some Hermite-Hadamard type integral inequalities for co-ordinated \((\alpha_1,m_1)\)-\((\alpha_2,m_2)\)-convex functions on a rectangle of the plane \(\mathbb{R}_0^2\).
A new perspective on paranormed Riesz sequence space of non-absolute type
Authors: Candan Murat
Published: January 2016

The current article mainly dwells on introducing Riesz sequence space \(r^{q}(\widetilde{B}_{u}^{p})\) which generalized the prior studies of Candan and Güneş [28], Candan and Kılınç [30]  and consists of all sequences whose \(R_{u}^{q}\widetilde{B}\)-transforms are in the space \(\ell(p)\), where \(\widetilde{B}=B(r_{n},s_{n})\) stands for double sequential band matrix \((r_{n})^{\infty}_{n=0}\) and \((s_{n})^{\infty}_{n=0}\) are given convergent sequences of positive real numbers. Some topological properties of the new brand sequence space have been investigated as well as \(\alpha\)- \(\beta\)-and \(\gamma\)-duals. Additionally, we have also constructed the basis of \(r^{q}(\widetilde{B}_{u}^{p})\). Eventually, we characterize a matrix class on the sequence space. These results are more general and more comprehensive than the corresponding results in the literature.
A simple proof of the closed graph theorem
Authors: Ramm Alexander G.
Published: January 2016

Assume that A is a closed linear operator defined on all of a Hilbert space H. Then, A is bounded. This classical theorem is proved on the basis of uniform boundedness principle. The proof is easily extended to Banach spaces.
A comparative study to diagnose the accuracy of E-speed film, complimentary metal oxide semiconductor and storage phosphor systems in the detection of proximal caries: An in vitro study
Authors: Ramesh Tatapudi , Upendra Gurugubelli , Sravani Krishna Bandaru , Dathar Sahithi , Sinha Priyankesh , M.N Raghavendra , Swathi Myla , Roja Vara Lakshmi K
Published: January 2016

Background: Dental caries is one of the most commonly encountered conditions in clinical dentistry and these lesions remain undetected when confined to the vicinity of inter-proximal surfaces. Radiography plays a key role in the detection of inter-proximal caries especially in tight contacts.

Objectives: The purpose of this study was to compare the diagnostic accuracy of E-speed film, complementary metal oxide semiconductors (CMOS) and storage phosphor systems (PSP) in the detection of proximal caries of the posterior teeth.

Methods: Conventional films, CMOS and PSP images were used in detecting proximal caries on mesial and distal surfaces of 63 teeth (126 surfaces). Interpretation of all digital and conventional radiographs were performed and reanalyzed by four observers. The collected data was subjected to statistical analysis using chi square test, weighed kappa statistics and spearman rank correlation coefficient.

Results: The PSP images showed more accurate results in identifying normal tooth, enamel caries, dentinal caries and deep dental caries and kappa statistics had represented almost perfect reading of 0.8 – 0.9 for PSP images whereas CMOS images showed substantial reading of 0.6 – 0.7, and for IOPA images it showed moderate reading of 0.5 – 0.6, which stated that the higher inter-observer agreement was obtained for PSP images when compared with images taken by IOPA and CMOS. The intra-observer reliability by kappa statistics had shown highly significant value (0.82) in the present study.

Conclusion: Conventional films, CMOS and PSP images had shown almost appropriate results in the detection of proximal caries but PSP receptors were better in disclosing the details more accurately in terms of delineating the actual extent of the lesion pertaining to their high resolution capacity and further their flexibility made them easier during handling the radiograph, when compared with that of rigid CMOS receptors.
Tipos de expertise na tomada de decisão política em educação: Contribuições de uma discussão teórico-concetual
Authors: Coelho Carina , Terrasêca Manuela , Correia José Alberto
Published: January 2016

Neste artigo apresentamos as reflexões produzidas no domínio da análise e discussão concetuais, que fazem parte de uma investigação mais ampla que visa compreender e interpelar formas atuais de expertise na produção de políticas educativas, nomeadamente no que concerne às características dos atores que constituem a figura do expert e aos tipos de conhecimento reconhecidos como válidos na legitimação das decisões políticas. Partindo de uma contextualização do interesse do estudo no âmbito das mudanças que têm ocorrido, nas últimas décadas, nos modos de governação e de fazer política, revisitamos e procuramos colocar em diálogo perspetivas de alguns autores, numa abordagem aos conceitos de expert e de expertise que toma como referência particular as articulações que se estabelecem entre estes e outros conceitos, campos profissionais e esferas de ação vizinhos. Algumas das considerações que resultam desta análise apontam para uma variabilidade interpretativa com uma amplitude tal que permite incluir conceitos opostos, especialmente se considerarmos o grau de formalização e o grau de especialização do saber. Lançamos também algumas pistas sobre a pertinência da análise de processos de decisão política através da abordagem do expert enquanto figura coletiva.
Entre dois regimes jurídicos, o que mudou no currículo da formação inicial de professores em Portugal?
Authors: Lopo Teresa Teixeira
Published: January 2016

Neste artigo analisamos,  numa perspetiva compreensiva,  as alterações introduzidas no currículo da formação inicial de professores do 1.º ciclo do ensino básico, nível escolar que em Portugal abrange os quatro primeiros anos de escolaridade obrigatória, entre dois regimes jurídicos de habilitação profissional para a docência: o primeiro, instituído em 2007 e decorrente da reforma legislativa exigida pelo Processo de Bolonha, o segundo, instituído em 2014, e implicando novas alterações, a partir do ano letivo de 2015/2016, na duração dos ciclos de estudo, na sua organização curricular e componentes de formação. Os resultados da nossa análise sugerem que as alterações introduzidas em 2014 resultaram de uma leitura redutora, quer dos resultados da investigação nacional sobre formação inicial de professores, quer das recomendações dos estudos e relatórios internacionais de análise comparada que são invocados nesse texto legal para justificar, justamente, a introdução dessas alterações.
The Modern Advertising Agency Selection Contest: A Case for Stipends to New Participants
Authors: Horsky Dan , Horsky Sharon , Zeithammer Robert
Published: January 2016

In the modern advertising agency selection contest, each participating agency specifies not only its proposed creative campaign but also the budget required to purchase the agreed-on media. The advertiser selects the agency that offers the best combination of creative quality and media cost, similar to conducting a score auction. To participate in the contest, each agency needs to incur an up-front bid-preparation cost to cover the development of a customized creative campaign. Agency industry literature has called for the advertiser to fully reimburse such costs to all agencies that enter the contest. The authors analyze the optimal stipend policy of an advertiser facing agencies with asymmetric bid-preparation costs, such that the incumbent agency faces a lower bid-preparation cost than a competitor agency entering the contest. The authors show that reimbursing bid-preparation costs in full is never optimal, nor is reimbursing any part of the incumbent's bid-preparation cost. However, a stipend that is strictly lower than the competitor's bid-preparation cost can benefit the advertiser under certain conditions. The authors provide a sufficient condition (in terms of the distribution of agency values to the advertiser) for such a new-business stipend to benefit the advertiser.
Keeping the American Dream Alive: The Interactive Effect of Perceived Economic Mobility and Materialism on Impulsive Spending
Authors: Yoon Sunyee , Kim Hyeongmin Christian
Published: January 2016

This research illustrates how perceived economic mobility moderates the linkage between materialism and impulsive spending. Using various data sources, four studies show that materialistic consumers do not easily engage in impulsive spending when they perceive high economic mobility, whereas they tend to spend impulsively when they perceive low economic mobility. However, perceived economic mobility functions in the opposite manner when the purchase is a means to achieve financial success. The authors trace this effect to the self-regulation process of materialistic consumers, such that when perceiving high economic mobility, these consumers regulate their behavior toward long-term financial success, sacrificing the pleasure of acquisitions in the present. By elucidating the important role that perceived economic mobility plays in impulsive spending, the current research sheds new light on consumer research and offers managerial and public policy implications.
High Strength Metallurgical Graphene – Mechanisms of Growth and Properties / Grafen Metalurgiczny O Wysokiej Wytrzymałości – Mechanizmy Wzrostu I Właściwości
Authors: Kula P. , Szymański W. , Kołodziejczyk Ł. , Atraszkiewicz R. , Dybowski K. , Grabarczyk J. , Pietrasik R. , Niedzielski P. , Kaczmarek Ł. , Cłapa M.
Published: January 2016

In this work, the growth mechanisms of chemical vapor deposited and metallurgical graphene and their selected mechanical and electrical properties were investigated. The study revealed the influence of the growth mechanisms on monoand poly-crystalline nanostructures of synthesized graphene monolayers. The structure of flake boundaries greatly affects both the mechanical and electrical properties. The key factors are overlapping of the graphene flakes, their degree of mismatch and the presence of π type bonds. All of these issues should be taken into account when developing industrially scaled technologies for graphene manufacturing.
Influence of Production Process and Material Factors on Fatigue Strength of Tubular Stabilizer Bar / Wpływ Procesu Produkcyjnego I Czynników Materiałowych Na Wytrzymałość Zmęczeniową Stabilizatora Rurowego
Authors: Wittek A.M. , Burdzik R. , Folęga P. , Konieczny Ł. , Łazarz B.
Published: January 2016

The paper presented results of the research on process of production of highly important element of passenger car. The main object of the research was influence of production process and material factors on fatigue strength of tubular stabilizer bar. The scope of the research included the stabilizer bar hot bent at the bending table, hardened in oil and tempered. The bending radii I, II and III were metalographically tested. The stabilizer bar was also subjected to fatigue tests. For analysis purpose the finite element method (FEM) calculation have been conducted. The analysis of relationship of outer diameter to wall thickness is very important. The analysed bar has broken early. The paper presents the reasons for premature failure of the tubular stabilizer bar.
Effect of Ti Addition on the Residual Aluminium Content and Mechanical Properties of the B4C-Al Composites Produced by Vacuum Infiltration / Wpływ Dodatku Tytanu Na Resztkową Zawartość Aluminium I Właściwości Mechaniczne Kompozytów B4C-Al Wytworzonych Przez Infiltrację Próżniową
Authors: Xiaozhou Cao , Chao Wang , Xiangxin Xue , Gongjin Cheng
Published: January 2016

The effect of Ti addition on the residual Al content and mechanical properties of B4C-Al composites fabricated by vacuum infiltration was investigated in the present study. The B4C-Al composite materials were fabricated using [Ti+B4C] preforms preheated at 1700ºC for 1 h and Al alloys infiltrated in vacuum atmosphere at 1100ºC for 2 h. The phase composition indicated that TiB2 has high wettability to Al as a result of the preheating. SEM and EDX results revealed a number of Al dimples are on the fracture surface due to the existence of TiB2. When the content of added Ti increases to 30%, the [Ti+B4C] preform is characterized by a minimal porosity (33.11%) and a maximal density, a corresponding amount of residual Al of 33.11% and a minimal fracture toughness (5.03 MPa·m1/2) with a hardness of up to 63 HRC. The residual Al and the mechanical properties of the composite material preform were determined by the Ti content of the preform.
Impact Load of Welds After Micro-Jet Cooling / Dynamiczne Obciążenie Spoin Chłodzonych Mikrojetowo
Authors: Hadryś D.
Published: January 2016

Micro-jet cooling is an innovative method of forced cooling. It could be used to cooling after welding immediately. It allows to obtain welds with better properties in comparison to ordinary welding method. Favourable structure of weld metal deposit (WMD) with higher content of acicular ferrite (AF) could be obtained. These properties can be controlled by several variables (e. g. type of cooling gas, number of jets). Plastic properties are particularly important in case of impact load. This type of strength is very dangerous for the structure and for safety of users (ex. car body during car crash). This article presents the influence of the cooling gas and the number of jets on plastic properties of the weld joint for impact load. It is described by restitution coefficient and plastic strain.
Microstructure and Mechanical Properties of High-Alloyed 23Cr-5Mn-2Ni-3Mo Cast Steel / Mikrostruktura I Właściwości Mechaniczne Wysokostopowego Staliwa 23Cr-5Mn-2Ni-3Mo
Authors: Kalandyk B. , Zapała R. , Kasińska J. , Wróbel M. , Balicki M.
Published: January 2016

The article presents the microstructure and mechanical properties of cast duplex stainless steel type 23Cr-5Mn-2Ni-3Mo. It has been shown that the structure of the tested cast steel is composed of ferrite enriched in Cr, Mo and Si, and austenite enriched in Mn and Ni. In the initial state, at the interface, precipitates rich in Cr and Mo were present. A high carbon content (0.08%C) in this cast steel indicates that probably those were complex carbides of the M23C6type and/or σ phase. Studies have proved that the solution annealing conducted at 1060°C was not sufficient for their full dissolution, while at the solutioning temperature of 1150°C, the structure of the tested material was composed of ferrite and austenite.

Partial replacement of Ni by two other austenite-forming elements, which are Mn and N, has ensured obtaining mechanical properties comparable to cast duplex 24Cr-5Ni-3Mo steel of the second generation. Basing on the results of static tensile test, a twice higher yield strength was proved to be obtained, compared to the cast austenitic 18Cr-9Ni and 19Cr-11Ni-2Mo steel commonly used in the foundry industry. In addition to the high yield strength (YS = 547 ÷ 572 MPa), the tested cast steel was characterized by the following mechanical properties: UTS = 731 ÷ 750 MPa, EL = 21 ÷ 29.5%, R.A. = 43 ÷ 52%, hardness 256 ÷ 266 HB. Fractures formed in mechanical tests showed ductile-brittle character.
Determination of Ranges of Components of Heat Affected Zone Including Changes of Structure / Określenie Zakresów Składowych Strefy Wpływu Ciepła Uwzględniając Zmiany Struktury
Authors: Śloderbach Z. , Pająk J.
Published: January 2016

A simplified analytical method to determine the range of the heat affected zone and its components during welding is presented. Heat affected zone (HAZ) is an area formed during welding in which, as the result of temperature, some structural changes in the welded material occured. Knowledge of the area and sub-areas of HA Z is important from practical point of view, since the area of the fine-grained HAZ is a critical place in terms of creep strength and thermal fatigue. Heat affected zone is often the cause of future damage of many devices in which welding technology was used for their repair.
Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu
Authors: Wojnicki M. , Mania I. , Marzec M. , Gajewska M. , Mech K.
Published: January 2016

Present work describes the influence of silver nanoparticles precursor form as well as the impact of graphene oxide initial concentration on deposition of the silver nanoparticles onto graphene oxide. Borane dimethylamine complex (DMAB) was used as the reducing agent. It was observed that application of silver ammonia complexes as the silver nanoparticles precursor as well as alkaline solution effect in higher quantity of deposited AgNPs in comparison to deposition process with the use of silver(I) nitrate in acidic solution.
Investigation of the Mechanical Properties and Microstructure of Nickel Superalloys Processed in Shear Forming / Identyfikacja Właściwości Mechanicznych Oraz Mikrostruktury Superstopów Niklu Przetwarzanych W Procesie Kształtowania Obrotowego
Authors: Żaba K. , Nowosielski M. , Puchlerska S. , Kwiatkowski M. , Kita P. , Głodzik M. , Korfanty K. , Pociecha D. , Pieja T.
Published: January 2016

The paper presents the research results of the mechanical properties and microstructure of the material in initial state and parts made from nickel superalloy Inconel®718 in the rotary forming process with laser heating. In the first step was carried out basic research of chemical composition, mechanical properties, hardness and microstructure of sheet in initial state. Then from the metal sheet, in industrial conditions, was made axisymmetric parts in the flow and shear forming with laser heating. Parts were subjected to detailed studies focused on the analysis of changes in the mechanical properties and microstructure in the relation to the material in initial state. The analysis was based on the tests results of strength and plastic properties, hardness, microstructural observations and X-ray microanalysis in the areas where defects appear and beyond. The results are presented in the form of tables, charts, and photographs of the microstructure.
Structure and Properties of Mg-Cu-(Y,Ca) Bulk Metallic Glasses / Struktura I Własności Masywnych Szkieł Metalicznych Mg-Cu-(Y,Ca)
Authors: Babilas R. , Cesarz-Andraczke K. , Nowosielski R.
Published: January 2016

The work presents preparation methods, structure characterization and mechanical properties analysis of Mg-based bulk metallic glasses in as-cast state and after crystallization process. The studies were performed on Mg60Cu30Y10 and Mg37Cu36Ca27 glassy alloys in the form of plates and rods. The X-ray diffraction investigations revealed that the tested samples with different thicknesses and shapes were amorphous. The characteristics of the fractured surfaces showed mixed fractures with the “river” and “mirror” patterns, which are characteristic for the glassy materials and some “smooth” areas. The samples of Mg37Cu36Ca27 alloy presented a two-stage crystallization process, but addition of Y caused a single stage crystallization behavior. Qualitative phase analysis from the X-ray data of examined alloys annealed at 473 K enabled the identification of Mg, Mg2Cu, Cu2Mg and CaCu crystalline phases. The changes of compressive strength as a function of annealing temperature for studied rods were stated. The best mechanical properties including microhardness and compressive strength were obtained for the alloy with the addition of Y in as-cast state.
Intensification of the Transition of Retained Austenite to Martensite Effected by Changing the Stress State in Trip Steel Wires / Intensyfikacja Przemiany Austenitu Szczątkowego W Martenzyt Pod Wpływem Zmiany Stanu Naprężenia W Drutach Ze Stali Typu Tr Ip
Authors: Wiewiórowska S. , Muskalski Z. , Ciepiela W.
Published: January 2016

Change in the stress state is one of the factors that determined the transition of retained austenite to martensite. It has been proved that in products made from wires of a TRIP structure, which is characterized by a high retained austenite content, loading them with varying in sign cyclic stresses of magnitudes lower than yield strength (R0.2) results in intensive transition of the retained austenite to martensite. The paper presents a comparative analysis of investigation results concerning the determination of the quantity of retained austenite in the structure of wire for two TRIP steel grades with varying carbon content after they have been loaded with varying in sing cyclic stresses of a magnitude smaller than R0.2 under rotating bending conditions. The investigation carried out has determined whether and, if so, to what extent the loading of wire with cyclic external stresses of magnitudes lower than R0.2 may influence the quantity of transformed retained austenite and thus the mechanical properties of the products.
Numerical and Experimental Forming of Axisymmetric Products Using Methods of Deep Drawing and Flow Forming / Numeryczne I Eksperymentalne Kształtowanie Wyrobów Osiowosymetrycznych Metodą Tłoczenia Oraz Kształtowania Obrotowego
Authors: Woźniak D. , Hojny M. , Gądek T. , Głowacki M.
Published: January 2016

The paper deals with the problem of forming of axisymmetric element. Two-stages process was taken into consideration: deep drawing of metal blank using hydraulic press and the method of elongating flow forming. The contribution presents results of numerical and experimental analyzes. Numerical simulations of both the processes were realized in Kraków at AGH University. Numerical verification of both processes was carried out using finite element models implemented with the help of commercial analysis system on basis of conducted in Poznań experimental shaping tests of Hastelloy C-276 alloy. The tests were aimed to find opportunities and conditions of plastic deformation of the material. This article summarizes example results of both numerical and experimental forming of products made of hard-to-deform material.
Modelling and Analysis of Phase Transformations and Stresses in Laser Welding Process / Modelowanie I Analiza Przemian Fazowych I Naprężeń W Procesie Spawania Laserowego
Authors: Piekarska W.
Published: January 2016

The work concerns the numerical modelling of structural composition and stress state in steel elements welded by a laser beam. The temperature field in butt welded joint is obtained from the solution of heat transfer equation with convective term. The heat source model is developed. Latent heat of solid-liquid and liquid-gas transformations as well as latent heats of phase transformations in solid state are taken into account in the algorithm of thermal phenomena. The kinetics of phase transformations in the solid state and volume fractions of formed structures are determined using classical formulas as well as Continuous-Heating-Transformation (CHT) diagram and Continuous-Cooling-Transformation (CCT) diagram during welding. Models of phase transformations take into account the influence of thermal cycle parameters on the kinetics of phase transformations during welding. Temporary and residual stress is obtained on the basis of the solution of mechanical equilibrium equations in a rate form. Plastic strain is determined using non-isothermal plastic flow with isotropic reinforcement, obeying Huber-Misses plasticity condition. In addition to thermal and plastic strains, the model takes into account structural strain and transformation plasticity. Changing with temperature and structural composition thermophysical parameters are included into constitutive relations. Results of the prediction of structural composition and stress state in laser butt weld joint are presented.
Welding of Thermomechanically Rolled Steel by Yb:YAG Disk Laser / Spawanie Stali Walcowanej Termomechanicznie Laserem Dyskowym Yb:YAG
Authors: Lisiecki A.
Published: January 2016

Autogenous laser welding of 5.0 mm thick butt joints of thermomechanically rolled steel S700MC was investigated. The Yb:YAG disk laser TruDisk 3302 emitted at 1.03 μm was used for the trials of autogenous welding. The effect of laser welding parameters and thus thermal conditions of welding on weld shape, microstructure of weld metal and heat affected zone (HAZ), tensile strength, bending angle, impact toughness and microhardness profile was determined. Studies have shown that it is advantageous to provide a high welding speed and low heat input. High cooling rate of weld metal and HAZ leads to the formation of a favorable structure characterized by a large proportion of fine-grained acicular ferrite and provides high mechanical properties of butt joints.
Analysis of Continuous Induction Hardening of Steel Cylinder Element Made of Steel 38Mn6 / Analiza Przelotowego Hartowania Indukcyjnego Walca Ze Stali 38Mn6
Authors: Barglik J. , Smalcerz A. , Smagór A. , Paszek P.
Published: January 2016

The paper presents analysis of surface induction hardening of a cylindrical element made of steel 38Mn6. The mathematical model of the non-stationary process is elaborated. Calculations of coupled electromagnetic and temperature fields are provided by means of the Flux 2D software. Computations are compared with the measurements realized at the laboratory stand located in the Silesian University of Technology. The expected hardness distribution within the surface layer is noticed.
Disk Laser Welding of Car Body Zinc Coated Steel Sheets / Spawanie Laserem Dyskowym Blach Ze Stali Karoseryjnej Ocynkowanej
Authors: Lisiecki A. , Burdzik R. , Siwiec G. , Konieczny Ł. , Warczek J. , Folęga P. , Oleksiak B.
Published: January 2016

Autogenous laser welding of 0.8 mm thick butt joints of car body electro-galvanized steel sheet DC04 was investigated. The Yb:YAG disk laser TruDisk 3302 with the beam spot diameter of 200 μm was used. The effect of laser welding parameters and technological conditions on weld shape, penetration depth, process stability, microstructure and mechanical performance was determined. It was found that the laser beam spot focused on the top surface of a butt joint tends to pass through the gap, especially in the low range of heat input and high welding speed. All test welds were welded at a keyhole mode, and the weld metal was free of porosity. Thus, the keyhole laser welding of zinc coated steel sheets in butt configuration provides excellent conditions to escape for zinc vapours, with no risk of porosity. Microstructure, microhardness and mechanical performance of the butt joints depend on laser welding conditions thus cooling rate and cooling times. The shortest cooling time t8/5 was calculated for 0.29 s.
Separation Of Cadmium(II), Cobalt(II) And Nickel(II) By Transport Through Polymer Inclusion Membranes With Phosphonium Ionic Liquid As Ion Carrier / Separacja Jonów Kadmu(II), Kobaltu(II) I Niklu(II) W Procesie Transportu Przez Polimerowe Membrany Inkluzyjne Zawierające Fosfoniową Ciecz Jonową W Roli Przenośnika
Authors: Pospiech B.
Published: January 2016

This paper presents study on the facilitated transport of cadmium(II), cobalt(II) and nickel(II) ions from aqueous chloride solutions through polymer inclusion membranes (PIMs) with phosphonium ionic liquid. Cyphos IL 101 (trihexyl(tetradecyl) phosphonium chloride) was used as a selective carrier for synthesis of cellulose triacetate membranes containing o-nitrophenyl pentyl ether (ONPPE) as a plasticizer. Effect of different parameters such as hydrochloric acid concentration in the source phase as well as ion carrier concentration in the polymer membrane on metal ions transport has been investigated. Cd(II) was transported preferably from hydrochloric acid solutions containing Co(II) and Ni(II) through PIM containing 18.8 wt.% CTA and 26.0 wt.% Cyphos 101 and 55.1 wt.% ONPPE into 0.5 M HNO3 as the receiving phase. The obtained results suggest that there is a possibility of application of this membrane with Cyphos IL 101 as ion carrier for separation of Cd(II) over Co(II) and Ni(II) from hydrochloric acid solutions.
Influence of Surface Modification on Properties of Stainless Steel Used for Implants / Wpływ Modyfikacji Powierzchni Na Właściwości Stali Nierdzewnej Stosowanej Na Implanty
Authors: Basiaga M. , Jendruś R. , Walke W. , Paszenda Z. , Kaczmarek M. , Popczyk M.
Published: January 2016

The aim of the study was assessment of the influence of stainless steel 316 LVM surface modification on its functional properties. The analyzed steel undergone a surface treatment consisting of the following processes: mechanical polishing, chemical passivation and deposition of Al2O3 layers by Atomic Layer Deposition method. The proposed variant of surface treatment will undoubtedly contribute to improving the functional properties of stainless steel intended for implants. In order to assess functional properties of the steel, electrochemical studies, adhesion (scratch test), wetting angle tests and topography of surface (AFM method) were performed. The obtained results of the study showed clearly that the proposed by the authors way of surface treatment including: mechanical polishing, chemical passivation and deposition of Al2O3 layer by means of the ALD method effectively improves the corrosion resistance of stainless steel.
Analysis of Crystallisation Process of Cast Magnesium Alloys Based on Thermal Derivative Analysis / Analiza Procesu Krystalizacji Odlewniczych Stopów Magnezu W Oparciu O Analizę Termicznoderywacyjną
Authors: Król M. , Tański T. , Matula G. , Snopiński P. , Tomiczek A.E.
Published: January 2016

The paper presents the results of the crystallisation process of cast magnesium alloys based on the thermal-derivation analysis.

The effects of aluminium content and cooling rate on the characteristic parameters of the evaluation of magnesium dendrites during solidification at different cooling rates were investigated by thermal-derivative analysis (TDA). Dendrite coherency point (DCP) is defined with a new approach based on the second derivative cooling curve. Solidification behaviour was evaluated via one thermocouple thermal analysis method. Microstructural evaluations were characterised by light microscope, X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy. This research revealed that utilisation of d2T/dt2 versus the time curve methodology allows for analysis of the dendrite coherency point.
Possibilities of Application Methods Drece in Forming of Non-Ferrous Metals / Możliwości Aplikacyjne Metody Drece Dotyczące Odkształcania Metali Nieżelaznych
Authors: Rusz S. , Kłyszewski A. , Salajka M. , Hilser O. , Cizek L. , Klos M.
Published: January 2016

Device “DRECE - Dual Rolls Equal Channel Extrusion” is used for production of metallic materials with very fine grain size (UFG). During the actual forming process the principle of severe plastic deformation is used. Metallic strip with dimensions 57×2×1000 mm is inserted into the device. During the forming process the main cylinder in synergy with the pressure roller extrude the material through the forming tool without any change of cross section of the strip. In this way a significant refinement of grain is achieved by severe plastic deformation. This method is used for various types of metallic materials, non-ferrous metals and their alloys. The DRECE device is also being verified from the viewpoint of achievement of a UFG structure in a blank of circular cross-section (wire) with diameter of ϕ 8 mm × 1000 mm.
Composite Nickel Coatings Produced on 6XXX Series Aluminium Alloys with the Addition of Vanadium / Kompozytowe Powłoki Niklowe Wytwarzane Na Stopach Aluminum Serii 6XXX Z Dodatkiem Wanadu
Authors: Nowak M. , Lech-Grega M. , Kozik A. , Mitka M. , Gawlik M. , Kłyszewski A.
Published: January 2016

Studies of composite nickel coatings electrolytically deposited on aluminium alloys with different content of vanadium were described. Composite coatings were deposited from a Watts bath containing fine-dispersed SiC powder particles in an amount of 20 g/l and organic matters such as saccharin and sodium laurate. The morphology, structure and thickness of the obtained composite coatings were presented. The corrosion resistance of produced coatings was examined by electrochemical method. Basing on the results of studies it was found that coatings obtained with the sole addition of saccharin were characterized by numerous surface defects. The addition of sodium laurate eliminated the occurrence of defects caused by hydrogen evolution and the resulting coatings were continuous with good adhesion to the substrate. The distribution of the ceramic SiC phase in coatings was fairly uniform for all the examined variants of aluminium alloys. SEM examinations did not reveal the phenomenon of the ceramic particles agglomeration.
Mechanical Spectroscopy of MgB2 Containing Sic / Spektroskopia Mechaniczna MgB2 Zawierającego Sic
Authors: Silva M.R. , Silva L.B.S. , Rodrigues Junior D. , Grandini C.R.
Published: January 2016

The compound magnesium diboride (MgB2) has been well-known since the 1950s; however, its superconducting properties were unknown. Intrinsic characteristics of MgB2 make this material a promising candidate for technological applications, although the low value of the irreversibility field and the decrease in critical current density with the increase in the magnetic field considerably reduce its utility. The present work aimed to study the effect of carbon-based doping on anelastic properties of MgB2 as measured by mechanical spectroscopy. The samples were prepared by using the powder-intube method. The samples were made with 5, 7.5, and 10 wt.% of silicon carbide (SiC). The results reveal complex mechanical loss spectra caused by the interaction between point defects and surface defects in the crystalline lattice of MgB2.
Effects of Precipitation Hardedning in Co-Ni-Cr Alloy on Dissipative Motion of Dislocations by Amplitude-Dependent Internal Friction Measurements / Wpływ Utwardzenia Wydzieleniowego Stopu Co-Ni-Cr Na Rozpraszający Ruch Dyslokacji Badany Przez Zależne Od Amplitudy Pomiary Tarcia Wewnętrznego
Authors: Cosimati R. , Mari Daniele
Published: January 2016

The effects of precipitation hardening occurring in a Co-Ni-Cr alloy after annealing treatments have been studied by using mechanical spectroscopy. The amplitude-dependent internal friction (ADIF) due to the dissipative motion of dislocations reveals the presence of a threshold strain for weakly pinned dislocations. The change of ADIF curves and the increase of the elastic modulus after thermal cycles producing precipitates suggest that dislocations motion is hindered leading to increasing strength of the material. Precipitation is confirmed by the changes of thermoelectric power (TEP) and by hardness measurements showing a hardness increase at the same temperature as the maximum in TEP curve. The ADIF spectra as well as the interaction between dislocations and precipitates are interpreted by proposing a phenomenological model based on the Granato-Lücke theory.
Effect of Small Addition of Cobalt on Magnetic Properties and Internal Stresses Sources in the Form of Free Volumes and Pseudo-Dislocation Dipoles in Fe78CoXSi11-XB11 (x = 0 Or 2) Alloys / Wpływ Nieznacznego Dodatku Kobaltu Na Właściwości Magnetyczne Oraz Źródła Naprężeń Wewnętrznych W Postaci Wolnych Objętości Oraz Pseudodyslokacyjnych Dipoli W Stopach Fe78CoXSi11-XB11 (x = 0 Or 2)
Authors: Szota M.
Published: January 2016

Amorphous materials in the form of tapes, despite being discovered more than half a century ago, are still the object of interest for materials engineers and electro-technical industry. They possess a great application potential, and are constantly studied for new variations. Due to the different structure from the commonly manufactured textured FeSi sheets, FeCoB based amorphous alloys demonstrate very good, so called soft magnetic properties. This paper presents the results of studying the structure and magnetic properties of tapes of Fe78CoxSi11-xB11(X = 0 or 2) alloys of amorphous structure. In addition, the effect of Co alloy addition on the type of structural defects in the area of ferromagnetic saturation approach was examined. It was found that a small addition of Co affects the increase of saturation magnetization value, as well as the distribution of magnetization vectors within the stresses sources in form of structure defects.
Learning Strategy for a Prospective Professional Engineer
Authors: Chuchalin Alexander , Gasheva Yuliya
Published: January 2016

The paper proposes a learning strategy as a tool for professional development of graduate engineers. The aim of the study is to define elements of a learning strategy for prospective professional engineers and to identify a way for forming this strategy. Feedback questionnaires for certified professional engineers in Russia and two-round Delphi questionnaires for practicing engineers and evaluators involved in certification examinations are among used methods.
Using CFD Techniques in Teaching Rectangular Settling Tank Hydrodynamics
Authors: Robescu Lacramioara Diana , Manea Elena Elisabeta
Published: January 2016

Sedimentation is one of the most important phenomena applied in wastewater treatment. The paper presents the CFD techniques used in teaching students the influence of the inlet baffle on the primary settling tank hydrodynamics. Different sizes and dimensions of the baffle are studied in order to highlight the optimum configuration that assures uniform flow in the settling area and prevents dead zones. By this mean the students have the possibility to evaluate multiple configurations in short time intervals and with low costs, when compared to hands-on experiments.
Empirical Study of the Factors which Have an Impact on University Performance in EU Countries, Reflected by the Shanghai Ranking
Authors: Pop Olga , Popescu Sorin , Dragomir Mihai
Published: January 2016

The study tries to prove the existence of a significant relationship between EU countries academic excellence measured by international university rankings scores and the level of attainment for the EU strategic objectives in higher education and research, as are measured by the countries’ values of the afferent indicators. The study was applied to the correlation between some headline indicators of the Europe 2020 strategy and the Shanghai Ranking scores. Measuring the strength of a linear association between variables by using the Pearson Correlation, a strong correlation was found between the country Shanghai scores and the country values for indicators such as: “public expenditure in education”, “expenditure in R&D”, “patent stock”, and “lifelong learning”. A moderate correlation with students’ international mobility was also identified.
Managing Knowledge in Public - Private Partnerships for R&D Centres
Authors: Palade Horatiu Constantin , Nicolaescu Sergiu Stefan , Kifor Claudiu Vasile , Bondrea Ioan , Balan Liviu
Published: January 2016

The organizations from private sector are living into an era of innovation, innovation that can be enhanced through research inside academic sector. The European and national initiative is to foster collaboration between them and develop a climate of challenging both sectors pursuing innovation.

The paper is proposing a model of collaboration between a private organization from automotive industry and four layers of higher education. The academic side: bachelor, master and PhD students together with a PhD Adviser, is involved into a vivid bidirectional feedback with the private organization, creating a Research Group. The methodologies used during research consist of bibliographic research, observational research inside organization and interview technique. The research proves that existing models tend to fall off when faced with frequent changes but the proposed one can enrich academic and private results.

The main purpose of the model is to develop an efficient collaboration for R&D PPPs into creation of a Software platform that integrates the continuous improvement techniques inside projects, organizations and onto human resources.
Student Career Management – Private and Public Sector Involvement
Authors: Fagateanu Alina-Mihaela , Nicolaescu Sergiu Ştefan , Kifor Claudiu Vasile , Mărginean Silvia
Published: January 2016

The need of high level prepared students into the private sector is continuously increasing because of the raised innovation level requested by market. In this case study, experts were involved from the private sector in collaboration with the academic sector for a career management project initiated for students; the monitored KPIs had a positive trend.

The purpose of the paper is to analyze and show the results of a project with big impact on the education of students from Romania and on the collaboration between the private and public sector. A model of career management is proposed, in which the knowledge is mobilized into a spiral of education levels with influence from the public sector, the private sector and the government. The positive influence of private sector it is highlighted and it is advised to introduce the management of career into student’s education.
Lean Innovation of Course Unit Contents
Authors: Brad Stelian , Brad Emilia
Published: January 2016

Designing courses for emerging areas of study is subject to clear challenges. If the envisaged courses are directly paid by the students – as it is the case of this research – they are actually the customers whose requirements have to be satisfied. Traditional approaches for collecting student requirements are not feasible for building up very novel topics. For such cases, an approach for course unit design that respects the lean philosophy is introduced in this paper. Lean is about creation of more value for students with fewer resources; or maximizing value while minimizing waste. The approach is based on the paradigm that, in highly dynamic and strong competitive educational markets, top quality courses must be designed from the very early stages. A hypothesis-based process defines the “content-prototype” of the course, which is further tested via web-based surveys that are directed to potential students. Results are statistically interpreted and a refined course content is formulated. The prototype for the most delicate module of the course is elaborated to test the level of delight of potential students (also called the WOW effect). Lessons learned are then considered to design the “promoter-prototype” of the course. A focus group is then used to test if potential students will feel a special experience interacting with the course content (also known as the KANDO effect). The methodology was experimented to design a master course unit on digital entrepreneurship. Empirical researches reveal the viability of the methodology to extract the appropriate topics of a course in emerging areas of study. Researches also show that a well-piloted strategy for course delivery should be in place to achieve the desired market impact.