scholarly journals Justification of the effect of transitional modes on the quality of ready-made products when their treatment is used by plastic deformation methods from the position of the wave and auto vibration processes

2019 ◽  
pp. 6-16
Author(s):  
A. D. Uchitel ◽  
Yu. A. Malinovskyi ◽  
A. N. Panchenko ◽  
G. V. Danilina ◽  
S. Yu. Datsenko
Keyword(s):  
Plastic Deformation ◽  
Metal Forming ◽  
Dynamic Instability ◽  
Longitudinal Force ◽  
Elastic Base ◽  
Surface Layers ◽  
Tangential Forces ◽  
Definition Of

Purpose. Substantiation of the role of longitudinal and transverse wave processes in the surface layers on the quality of finished products obtained by plastic deformation methods, such as cold rolling, stamping, running in, drawing and others. Research methodology. In the work, to describe the transients at the beginning of the interaction of the tool with the workpiece, a computational model was applied in which the surface layers of the workpiece are represented as a beam on an elastic base, loaded with suddenly applied tangential forces, often exceeding their critical values. The reasons for the occurrence of unstable dynamic states of such a beam, in which the integrity of the surface layers of the workpiece and parts may be disturbed due to the occurrence of supercritical stresses and deformation in the material of the outer layers, are investigated. Findings. The results were obtained on the definition of hazardous states of the surface layers of the workpiece, under the action of suddenly applied loads at the initial moments of the capture of the workpiece, as well as at the moments when the tool slips over the workpiece during the alignment of their speeds. Originality. It consists in the fact that the first dynamic problem was set and solved for the surface layers of the workpiece, represented as a two-support beam on an elastic base loaded with a suddenly applied longitudinal force, which can significantly exceed its critical value. Denoted areas of dynamic instability of the surface layers of the workpiece. The practical value of the work lies in the fact that the modes of operation of the metal forming machine and the parameters of the workpiece were identified under which conditions for obtaining products of insufficient quality may arise. As well as developed recommendations for improving the quality of finished products. Key words: metal forming, transients, longitudinal wave, shear wave, billet, loaded layer, overload coefficient, dynamic buckling, tool, rolling, knurling, drawing, hypothetical beam, impact, elastic wave propagation velocity.

scholarly journals Parametric effects in the frictional interaction of a tool with a billet in the process of its treatment by pressure

2019 ◽  
pp. 17-30
Author(s):  
A. D. Uchitel ◽  
Yu. A. Malinovskyi ◽  
G. V. Danilina ◽  
N. V. Voytenko ◽  
D. P. Rybak ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metal Forming ◽  
Surface Layers ◽  
Operating Modes ◽  
Parametric Effects ◽  
Shaping Tool ◽  
Parametric Oscillations ◽  
Cold Metal ◽  
Periodic Components

Purpose. Justification of the influence of pulsating dynamic loads in the surface layers of parts obtained by plastic deformation methods on the quality of finished products during cold rolling, knurling, running in, drawing and stamping. Research methodology. A schematization was adopted in which the workpiece or part is an anisotropic medium elastically bonded along the surface of the junction of external reinforced layers with the internal mass of the part. On the basis of the proposed physical model, conditions were found under which under the action of cyclic surface loads, violations of the integrity of the appearance of fracturing and waviness of external fibers in the process of strengthening the treatment of semi-finished products and parts are possible. Findings. The obtained data allows us to establish the frequency characteristics of the process of unstable parametric oscillations caused by nonlinear friction between the forming element and the workpiece (part), which lead to a deterioration in the quality of finished products. In addition, for the steady-state operating modes of machines for cold metal forming, the dependence of the amplitudes of deformation waves, as functions of the maximum pulsations of the “periodic” components of surface forces, was obtained, and measures were proposed to reduce vibroactivity in the area of tool interaction with the workpiece and machine parts for cold processing. Originality. It consists in formulating and solving the second dynamic problem for the surface layers of the workpiece at the interface of the processed layers and the workpiece array. Depending on the occurring periodic forces for the surface layers, the conditions of steady and unstable operation of the shaping tool and the whole machine for metal forming by pressure, as a whole, are determined. Practical value of the work lies in the fact that safe modes of operation of metal forming machines have been identified, conditions for improving the design of machines for cold metal forming have been created, under which the possibility of occurrence of parametric oscillations, as well as the reduction of vibratory activity of machines for cold metal forming in minimized whole. Keywords: running in, knurling, drawing, plastic deformation, roller, tool, workpiece, the amplitude of oscillations, load, excitation coefficient, steady amplitude, deformation wave.

scholarly journals Standard Quality Banking Services of Islamic Banks

2018 ◽  
Vol 8 (1) ◽  
pp. 301
Author(s):  
Haneen A. Al-Khawaja ◽  
Barjoyai Bardai
Keyword(s):  
Islamic Law ◽  
Theoretical Aspect ◽  
Islamic Banking ◽  
Islamic Banks ◽  
High Confidence ◽  
Banking Services ◽  
Standard Quality ◽  
Definition Of

This research discusses in detail the theoretical aspect of the quality standards of banking services of traditional Islamic banks. The criterion of "Shari'ah Compliance" was added by the researcher to the importance and role of dealing with Islamic banks, the definition of this standard and its importance, how to test it for banks as well as how, without the legitimate commitment of these banks to what is classified as Islamic from the foundation, we focus on the importance of the existence of a legal commitment to any Islamic bank to achieve the quality of Islamic banking services of high quality in accordance with Islamic law and laws to achieve a high confidence in the customers who belong to him and deal with his Conspiracy.

The Role of Knowledge Management (KM) in Aged Care Informatics

Big Data ◽  
2016 ◽  
pp. 1668-1686
Author(s):  
Margee Hume ◽  
Craig Hume ◽  
Paul Johnston ◽  
Jeffrey Soar ◽  
Jon Whitty
Keyword(s):  
Knowledge Management ◽  
Management Practice ◽  
Aged Care ◽  
Social Infrastructure ◽  
Care Giving ◽  
Aged Care Facilities ◽  
Definition Of

Aged care is projected to be the fastest-growing sector within the health and community care industries (Reynolds, 2009). Strengthening the care-giving workforce, compliance, delivery, and technology is not only vital to our social infrastructure and improving the quality of care, but also has the potential to drive long-term economic growth and contribute to the Gross Domestic Product (GDP). This chapter examines the role of Knowledge Management (KM) in aged care organizations to assist in the delivery of aged care. With limited research related to KM in aged care, this chapter advances knowledge and offers a unique view of KM from the perspective of 22 aged care stakeholders. Using in-depth interviewing, this chapter explores the definition of knowledge in aged care facilities, the importance of knowledge planning, capture, and diffusion for accreditation purposes, and offers recommendations for the development of sustainable knowledge management practice and development.

The Role of Nursing in Caring for Patients Receiving Palliative Surgery or Chemotherapy

2019 ◽  
pp. 660-669
Author(s):  
Virginia Sun ◽  
Tami Tittelfitz ◽  
Marjorie J. Hein
Keyword(s):  
Palliative Treatment ◽  
Symptom Control ◽  
Palliative Surgery ◽  
Treatment Modalities ◽  
Indications For Surgery ◽  
Role Of Nursing ◽  
Definition Of ◽  
Treatment Intent

Surgery and chemotherapy are common treatment modalities used to manage disease and symptoms in palliative settings where the disease is incurable. These treatment modalities can lead to deteriorations in a patient’s quality of life (QOL). The benefits of palliative surgery and chemotherapy should always focus on QOL, symptom control, and symptom prevention. The purpose of this chapter is to provide an overview of the definition of palliative surgery and chemotherapy, describe common indications for surgery and chemotherapy for palliative treatment intent, and discuss the role of nursing in caring for patients who are receiving palliative surgery and chemotherapy.

ARISTOPHANES VS TYPHON: CO(S)MIC RIVALRY, VOICE AND TEMPORALITY INKNIGHTS

Ramus ◽  
2014 ◽  
Vol 43 (1) ◽  
pp. 25-44 ◽  
Author(s):  
Mario Telò
Keyword(s):  
Essential Role ◽  
Fifth Century ◽  
Political Factions ◽  
Dramatic Performance ◽  
Definition Of ◽  
Somatic Experiences

Recent studies have analysed the essential role of interpoetic rivalry in Aristophanes' comic imagination. Zachary Biles has shown that ‘festival agonistics provide an underlying logic for the overall thematic design of individual plays’ and that ‘the plays can be treated as creative responses to the competitions.’ Aristophanes' dramatisation of comic competition has been viewed as a reflection of the struggles of political factions in late-fifth-century Athens or as an expression of a ‘rhetoric of self-promotion’ that builds the comic plot through the mutual borrowing of comic material (jokes, running gags). This paper suggests thatKnightspresents interpoetic rivalry as a conflict of embodied aesthetic modes. In this play, Aristophanes' tendentious definition of his comic self against his predecessor Cratinus results in opposed ways of conceptualising the sonic quality of dramatic performance and its material effects on the audience. The nexus of voice and temporality, which, as I argue, shapes the play's agonistic plot, equates the intergenerational duelling of Aristophanes' and Cratinus' political counterparts (the Sausage Seller and the older Paphlagon, respectively) to a contrast of somatic experiences grounded in sound.

Effect of a Surface Constraining Layer on the Plastic Deformation of Au Microspheres

MRS Advances ◽  
2018 ◽  
Vol 3 (8-9) ◽  
pp. 427-432
Author(s):  
AZM Ariful Islam ◽  
Robert J. Klassen
Keyword(s):  
Plastic Deformation ◽  
Small Volume ◽  
Dislocation Nucleation ◽  
Surface Layers ◽  
Loading Rates ◽  
Plastic Deformation Process ◽  
Sputter Deposited ◽  
Yield Force ◽  
Mechanisms Of Plastic Deformation

ABSTRACTSingle crystal Au microspheres, of 3 μm diameter, with sputter-deposited Ni surface layers, of 40 or 80 nm thickness, were tested in compression at three loading rates to investigate the role of thin passive layers on the mechanisms of plastic deformation of small-volume FCC ductile metal samples. The Ni layer resulted in an increase in the incipient yield force by about 10%. Micro-cracking of the Ni layer was observed to occur with incipient yielding. The estimated apparent activation volume of the incipient plastic deformation process was found to be nearly identical for the Ni-coated and the uncoated Au microspheres. This suggests that, while the stress required to initiate incipient plastic deformation was increased by the constraint imposed by the Ni layer, the subsequent plastic flow occurred by a dislocation nucleation and glide mechanism that is essentially the same as that occurring in an unconstrained Au microsphere.

scholarly journals TERBITAN BIBLIOGRAFI SEBAGAI ALAT BANTU PENELUSURAN INFORMASI DI PERPUSTAKAAN PUSAT PENELITIAN SOSIAL EKONOMI KELAUTAN DAN PERIKANAN

Jurnal Pari ◽  
2017 ◽  
Vol 2 (2) ◽  
pp. 52
Author(s):  
Siti Nurhayati ◽  
Arfah Elly
Keyword(s):  
Reference Material ◽  
Research Center ◽  
Economic Research ◽  
Library Services ◽  
Library Collection ◽  
Research Activities ◽  
Entire Collection ◽  
Definition Of

ABSTRAKBibliografi sangat penting bagi peneliti khususnya peneliti di Pusat Penelitian Sosial Ekonomi Kelautan dan Perikanan. Tujuan penulisan makalah memberikan gambaran pentingnya bibliografi dalam mendukung tugas peneliti. Makalah ini menguraikan tentang pengertian dan definisi bibliografi jenis-jenis bibliografi, serta peranan bibliografi bagi peneliti. Peneliti perlu memahami biliografi ini untuk menunjukkan tentang kegiatan-kegiatan penelitian yang telah dan akan dilakukan oleh peneliti lain. Fungsi lain dari bibliografi adalah sebagai bagian dari jasa pelayanan perpustakaan kepada pemustaka. Dengan menerbitkan suatu bibliografi, pustakawan dapat menawarkan koleksinya kepada pemakai tanpa harus mengeluarkan seluruh koleksi yang dimilikinya, serta dapat menjangkau pemustaka yang tinggal jauh dari perpustakaan. Dengan demikian maka, bibliografi dapat digunakan sebagai bahan rujukan terhadap koleksi perpustakaan. Selain itu diharapkan dapat menjadi acuan bagi pengelola perpustakaan yang lainnya dalam meningkatkan kualitas layanan kepada pemustaka khususnya peneliti.ABSTRACTThe Bibliography is very important for  researchers in particular those at the Marine and Fisheries for   Socio-Economic Research Center. The purpose of writing this paper is to give an illustration of  the importance of the bibliography  to support  the task of researchers. It describes   the definition of  bibliogra-phy, the   types of bibliographic, as well as the role of  bibliography for  researchers. Researchers need to understand bibliography in order to  show other researchers the research activities that have been and will be conducted.  Another function of the bibliography is as a part  of the library services to the patrons/users. By publishing a bibliography, librarians  can offer  their  collection to the users without having to  displaytheir entire collection, and they can also  reach those who are in remote places away from the library. Therefore, the bibliography can be  used  as a reference material to the library collection as well as a reference for other  library managers in  improving the quality of their service to the patrons especially researchers

Dialogical Nursing Ethics: the Quality of Freedom Restrictions

2008 ◽  
Vol 15 (6) ◽  
pp. 789-802 ◽  
Author(s):  
Tineke A Abma ◽  
Guy AM Widdershoven ◽  
Brenda JM Frederiks ◽  
Rob H van Hooren ◽  
Frans van Wijmen ◽  
...  
Keyword(s):  
Basic Assumption ◽  
Good Care ◽  
Intellectually Disabled ◽  
Health Care Practices ◽  
Moral Problems ◽  
Good Nurse ◽  
Care Practices ◽  
Definition Of

This article deals with the question of how ethicists respond to practical moral problems emerging in health care practices. Do they remain distanced, taking on the role of an expert, or do they become engaged with nurses and other participants in practice and jointly develop contextualized insights about good care? A basic assumption of dialogical ethics entails that the definition of good care and what it means to be a good nurse is a collaborative product of ongoing dialogues among various stakeholders engaged in the practice. This article discusses the value of a dialogical approach to ethics by drawing on the work of various nursing scholars. We present a case example concerning the quality of freedom restrictions for intellectually disabled people. Issues for discussion include the role and required competences of the ethicist and dealing with asymmetrical relationships between stakeholders.

scholarly journals What is person-centred care in dementia? Clinical reviews into practice: the development of the VIPS practice model

2013 ◽  
Vol 23 (2) ◽  
pp. 155-163 ◽  
Author(s):  
Janne Røsvik ◽  
Dawn Brooker ◽  
Marit Mjorud ◽  
Øyvind Kirkevold
Keyword(s):  
Controlled Trial ◽  
Practice Model ◽  
Severe Dementia ◽  
People With Dementia ◽  
Literature Reviews ◽  
Change In Practice ◽  
Definition Of ◽  
Coaching Approach

SummaryThe VIPS framework is a four-part definition of person-centred care for people with dementia (PCC), which arose out of an earlier review article for this journal. The definition has assisted in the practical application of person-centred care. It has been operationalized into the VIPS practice model (VPM), which has been subject to a recent randomized controlled trial within Norwegian nursing homes. The VPM provided a vehicle for the VIPS framework to be utilized during reflective practice meetings focusing on understanding care situations from the perspective of residents with moderate to severe dementia. VPM incorporated an education and coaching approach, clearly defined staff roles, and resident-focused outcomes in a cycle to support improvements in quality of care. The use of VPM in practice is discussed. VPM was built utilizing the literature from organizational change. The role of literature reviews in bringing about change in practice is highlighted.

Income Distribution and Social Change Revisited

1975 ◽  
Vol 4 (1) ◽  
pp. 57-68 ◽  
Author(s):  
A. B. Atkinson
Keyword(s):  
Social Change ◽  
Income Distribution ◽  
Statistical Information ◽  
Capital Gains ◽  
Attitudes And Beliefs ◽  
Definition Of ◽  
The Impact ◽  
Measurement Of Inequality

ABSTRACTEleven years after the publication of Richard Titmuss's essay on Income Distribution and Social Change, the official statisticians are still drawing optimistic conclusions about the tendency of income inequality to decline in Britain. This article re-examines some of the critical questions raised by Titmuss concerning the accuracy and interpretation of the official statistics. It considers the definition of income, the implications of capital gains, fringe benefits and the benefits from owner-occupation, the role of life-cycle factors, and the measurement of inequality. It concludes with an assessment of the impact of Titmuss's study on the quality of statistical information and on attitudes and beliefs.

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