Measurement and analysis of winding thickness variations in sectional warping process

2018 ◽  
Vol 30 (6) ◽  
pp. 772-783
Author(s):  
Recep Eren ◽  
Ozge Celik ◽  
Fatih Suvari ◽  
Seyit Ali Koksal
Keyword(s):  
Angular Position ◽  
Sheet Thickness ◽  
Woven Fabrics ◽  
Point Of View ◽  
Thickness Variation ◽  
Laser Sensor ◽  
Content Type ◽  
Key Factor ◽  
Thickness Variations ◽  
Incremental Encoder

Purpose Sectional warping is the most widely used warp preparation process in weaving. Winding all warp sections with the same length and same tension is a key factor for a good quality warp preparation. It is required that winding thickness (increase in radius due to warp winding) remains the same within and between warp sections. The purpose of this paper is to investigate winding thickness variations within and between warp sections, which can lead to quality problems in woven fabrics. Design/methodology/approach A measurement system is developed and then an experimental investigation into winding thickness variations is carried out. Winding thickness is measured with respect to number of drum revolutions using a laser sensor with 20 microns resolution. The number of drum revolutions and drum angular position are measured by an incremental encoder. Both sensors are mounted on an industrial sectional warping machine. A real-time software written in C programming language collects and records the data for all sections of warp with respect to drum number of revolutions and then results are evaluated to determine winding thickness variations. Findings Results show that warp sheet thickness starts with a higher value and it decreases up to around 30 drum revolutions and then it remains constant or decreases very slightly which can be considered as insignificant from practical point of view. Warp sheet thickness (i.e. thickness of one warp layer) fluctuates within each section up to 10 percent CV with five drum revolutions average warp sheet thickness. There are also warp sheet thickness variations between warp sections up to 3 mm. Originality/value Considering the short of practical research results on winding thickness variations in the literature, results of this study will be an original contribution to understanding winding thickness variation level. Also, results presented in this paper can be used to develop control algorithms for thickness control in sectional warping machines.

A capacitive angular sensor with flexible digitated electrodes

Sensor Review ◽  
2014 ◽  
Vol 34 (4) ◽  
pp. 382-388 ◽  
Author(s):  
Damir Krklješ ◽  
Dragana Vasiljević ◽  
Goran Stojanović
Keyword(s):  
Printed Electronics ◽  
Angular Displacement ◽  
Angular Position ◽  
Capacitive Sensor ◽  
Measurement Range ◽  
Content Type ◽  
Full Turn ◽  
Sensor Structure ◽  
Capacitor Structure ◽  
Incremental Encoder

Purpose – This paper aims to present a prototype of a capacitive angular-position sensor which exploits advantages of flexible/printed electronics. The novelty of the sensor is that the capacitor structure is placed at the circumference of the rotor and stator, that it posses two channels (capacitor structures) electrically shifted for p/4 and that the rotor is common for both channels. The electrodes of the sensing capacitor are digitated, providing a triangular transfer function. Design/methodology/approach – This sensor prototype consists of two flexible inkjet-printed silver electrodes forming a cylindrical capacitor structure. One of them is wrapped around the stator and another is wrapped around the rotor part of a simple mechanical platform used to precisely adjust the angular displacement. Findings – The capacitance as a function of angular position was measured using an inductance capacitance impedance (LCZ) Meter, and results are presented for a full-turn measurement range. The experimental results are compared with analytical ones and very good agreement has been achieved. Originality/value – The proposed capacitive sensor structure can be used as an absolute or an incremental encoder with different resolutions, and it can be applied in automotive industry or robotics.

The role of translators and interpreters in cascading crises and disasters

2019 ◽  
Vol 29 (2) ◽  
pp. 144-156
Author(s):  
David E. Alexander ◽  
Gianluca Pescaroli
Keyword(s):  
Emergency Preparedness ◽  
Point Of View ◽  
Qualitative Description ◽  
Economic Point ◽  
Content Type ◽  
Information Strategies ◽  
History Analysis ◽  
Key Factor ◽  
Emergency Preparedness And Response

Purpose The purpose of this paper is to explain the significance of cascading crises for translators and interpreters, and how their work may be affected by such events. It provides a theoretical basis for analysis and field practice. Design/methodology/approach The authors define cascades and explain how they influence the development of preparedness, mitigation and response. The authors identify key drivers of cascading crises and discuss how they challenge conventional approaches to emergency management. The authors discuss ways in which use of language could be a key factor in crisis escalation. The authors define priorities and operational challenges of cascading crises for translators and interpreters. In terms of methodology, this paper develops a conceptual framework that can be used for future enquiry and case history analysis. Findings The authors provide a qualitative description and synthesis of the key instructions to be used in the field. The authors offer a short list of key questions that can be referred to by linguists and scholars. The authors identify situations in which translation and interpretation are important ingredients in the success of emergency preparedness and response efforts. These include multilingual populations, migrant crises, international humanitarian deployment and emergency communication during infrastructure failures. Research limitations/implications This work has academic value for the process of understanding cascades and practical relevance in terms of how to deal with them. Practical implications Translators and interpreters need to understand cascading crises in order to be prepared for the challenges that such events will present. Social implications Society has become more complex and interconnected, with non-linear cascading escalation of secondary emergencies. Emergency planners and responders need to address this in new ways. Effective communication and information strategies are essential to the mitigation of cascading disaster risk. Originality/value The study of cascading crises from a socio-economic point of view is relatively new, but it is important because society is increasingly dependent on networks that can propagate failure of information supply.

Influence of structure and finishing of woven fabrics on their formability

2015 ◽  
Vol 27 (3) ◽  
pp. 447-459
Author(s):  
Iwona Frydrych ◽  
Małgorzata Matusiak
Keyword(s):  
Young’S Modulus ◽  
Young's Modulus ◽  
Statistical Significance ◽  
Woven Fabrics ◽  
Point Of View ◽  
Raw Material ◽  
Woven Fabric ◽  
Bending Rigidity ◽  
Content Type ◽  
The Given

Purpose – The purpose of this paper is to investigate the relationship between the formability of cotton and cotton/polyester woven fabrics and their selected properties: weft density, weave and a way of finishing. It shows how the mentioned properties influence fabric formability and analyze a statistical significance of investigated relationships. Design/methodology/approach – In paper two groups of cotton and cotton/polyester woven fabrics of different structure and a way of finishing have been measured in the range of their basic structural properties as well as bending rigidity and initial Young’s modulus. Formability of investigated fabrics has been calculated on the basis of bending rigidity and initial Young’s modulus. Next, ANOVA has been performed in order to analyze the relationships between the weft density, weave and a way of finishing of woven fabrics and their formability. Findings – The paper shows that all selected properties of woven fabrics significantly influence their formability as well as that there is statistically significant interaction between mentioned independent factors. It provides empirical results confirming that the influence of raw material composition of investigated cotton and cotton/polyester woven fabrics on the formability of fabrics is statistically insignificant. Research limitations/implications – Results of investigations can be applied for cotton and cotton-like woven fabrics. Practical implications – The paper includes implications for woven fabric engineering from the point of view of achieving the expected fabric formability. Social implications – The results enables the choice of appropriate fabric for the given clothing. Originality/value – This paper fulfills an identified need to study how the formability of woven fabrics can be shaped by an appropriate selection of their structure and a way of finishing.

The impact of sewing thread's tensile behavior and laundering process on the seam puckering of elastic and normal fabrics

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Reyhaneh Kamali ◽  
Yasaman Mesbah ◽  
Fatemeh Mousazadegan
Keyword(s):  
Woven Fabrics ◽  
Tensile Behavior ◽  
Content Type ◽  
Sewing Thread ◽  
Before And After ◽  
Key Factor ◽  
Thread Tension ◽  
Sewing Threads ◽  
The Impact ◽  
Seam Pucker

PurposeThe aim of the present study is to consider the influence of the tensile behavior of fabric and sewing thread on the seam appearance.Design/methodology/approachIn this study, the formation of seam puckering on two elastic and normal woven fabrics was explored. In order to prepare samples, various sewing threads were applied. Test specimens were sewn under five different thread tension levels. Then the appearance of samples was evaluated subjectively to determine their seam puckering grade before and after the laundering process.FindingsThe obtained outcomes of this study present that although sewing thread tension increment decreases the seam pucker ranking in the similar sewing condition, elastic fabrics have a greater seam pucker grade compared to the normal fabric due to the fabric extension and contraction during sewing and after sewing process, respectively. In addition, the elastic strain of the sewing thread is the key factor that determined sewing thread's tendency to make seam puckering. Moreover, the laundry process due to the relaxation of the sewing thread decreases the seam pucker grade.Originality/valueThe consistency of the tensile property of fabric and sewing thread is a crucial parameter in improving the seam appearance and obtaining a smooth seam.

The role of reciprocity and reputation in service relationships with arts organisations

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Giulio Toscani ◽  
Gerard Prendergast
Keyword(s):  
Grounded Theory ◽  
Design Methodology ◽  
Point Of View ◽  
Mutual Benefit ◽  
Content Type ◽  
Service Relationships ◽  
Key Factor ◽  
The Relationship ◽  
Practical Implications

Purpose In an arts organisation context, this paper aims to further the understanding of service relationships by developing a framework explaining how sponsored arts organisations could better manage their relationships with sponsors to facilitate mutual benefit and relationship persistence. Design/methodology/approach Grounded theory methodology was applied to sponsorship of arts organisations through interviews with the managers of arts organisations worldwide who had been involved in seeking and managing sponsorship relationships. Findings Reciprocity was found to be the key factor in successful sponsorship relationships, but emotional reference to reputation was also important. Together they link uncertainty in the complex sponsorship environment with an arts organisation’s artistic ambitions. Practical implications This study extends the understanding of service relationships by shedding light on the sponsorship relationship from the sponsored organisation’s point of view and in particular highlighting the role of reciprocity in managing the relationship with their sponsor. Originality/value Understanding the moderating roles of reciprocity and reputation in sponsorship relationships helps to explain key facets of such relationships which can partially negate sponsor benefits and threaten a sponsorship’s continuation.

The influence of economic crises on network behavior

2017 ◽  
Vol 32 (3) ◽  
pp. 445-456 ◽  
Author(s):  
Tibor Mandják ◽  
Ágnes Wimmer ◽  
François Durrieu
Keyword(s):  
Customer Orientation ◽  
Point Of View ◽  
Customer Relationships ◽  
Network Behavior ◽  
Supplier Relationships ◽  
Content Type ◽  
Modeling Methodology ◽  
Key Factor ◽  
Valuable Customer ◽  
Relational Outcomes

Purpose Following industrial network theory, this paper aims to address network behavior from a focal company’s perspective. Special attention is paid to examining the effect of perceptions of the economic crisis on network behavior. Design/methodology/approach The study is built on a quantitative analysis of an empirical database of 300 companies based on a survey completed in 2013 in Hungary. A focal company network behavior model was developed and applied to investigate the link between variables (valuable customer relationships, valuable supplier relationships, relationship strategy and relational outcomes) and the effect of managers’ perceptions about the intensity of the crisis. To obtain a deeper understanding of the effect of the crisis, structural modeling methodology was applied during data analysis. Findings How crises are perceived has a moderating influence on companies’ network behavior. In a context in which a crisis is strongly perceived, valuable customer relationships are considered more important than valuable supplier relationships; relationship strategy becomes more intensive; and performance is increasingly focused on operations and less on innovation. The main difference in network behavior is found with the management of the supply side. A different level of attention is paid to supplier relationships in a high crisis-perception context than when a crisis is perceived as being less critical. Research limitations/implications Results emphasize the importance of perceptions as a key factor in managerial attitudes, behavior and, ultimately, decision-making. This finding merits more attention from both researchers of business relationships and networks. Practical implications From a managerial point of view, the results emphasize the existence of potentially new opportunities in network management. The reinforcement of attention to the customer during a period of crisis implies the importance of the customer orientation, but also suggests that firms may have unexploited opportunities and more potential resources on the supplier side. Originality/value The paper combines an analysis of network behavior and perceptions of crisis, helping to explain managerial decisions and attitudes. Analysis was undertaken from a focal firms’ perspective and differences were investigated in attitudes concerning both supplier- and customer-side relations. How crises are perceived is a moderating variable of network behavior.

Austrian Veto against European Union Membership Negotiations with Turkey

2020 ◽  
Vol 8 (1) ◽  
pp. 103-122
Author(s):  
Ewa Kaczan-Winiarska
Keyword(s):  
European Union ◽  
European Commission ◽  
Security Policy ◽  
Negotiation Process ◽  
Point Of View ◽  
The European Union ◽  
Strategic Partner ◽  
Key Factor ◽  
European Standards ◽  
The Eu

The Austrian government is extremely sceptical about the accession negotiations which are conducted by the European Commission on behalf of the European Union with Turkey and calls for the negotiation process to end. Serious reservations of Vienna have been raised by the current political situation in Turkey under the rule of President Recep Tayyip Erdogan, as well as by the standards of democracy in Turkey, which differ greatly from European standards. Serious deficiencies in rule of law, freedom of speech and independence of the judiciary, confirmed in the latest European Commission report on Turkey, do not justify, from Vienna’s point of view, the continuation of talks with Ankara on EU membership. In fact, Austria’s scepticism about the European perspective for Turkey has a longer tradition. This was marked previously in 2005 when the accession negotiations began. Until now, Austria’s position has not had enough clout within the European arena. Pragmatic cooperation with Turkey as a strategic partner of the EU, both in the context of the migration crisis and security policy, proved to be a key factor. The question is whether Austria, which took over the EU presidency from 1.7.2018, will be able to more strongly accentuate its reservations about Turkey and even build an alliance of Member States strong enough to block Turkey’s accession process.

scholarly journals Determinants of Corporate Anti-Corruption Disclosure: The Case of the Emerging Economics

2021 ◽  
Vol 13 (6) ◽  
pp. 3462
Author(s):  
Maider Aldaz Odriozola ◽  
Igor Álvarez Etxeberria
Keyword(s):  
Empirical Studies ◽  
Geographical Area ◽  
Control Variable ◽  
Emerging Countries ◽  
Point Of View ◽  
Press Freedom ◽  
Negative Effects ◽  
Key Factor ◽  
Using Data ◽  
Positive Effect

Corruption is a key factor that affects countries’ development, with emerging countries being a geographical area in which it tends to generate greater negative effects. However, few empirical studies analyze corruption from the point of view of disclosure by companies in this relevant geographical area. Based on a regression analysis using data from the 96 large companies from 15 emerging countries included in the 2016 International Transparency Report, this paper seeks to understand what determinants affect such disclosure. In that context, this paper provides empirical evidence to understand the factors that influence reporting on anti-corruption mechanisms in an area of high economic importance that has been little studied to date, pointing to the positive effect of press freedom in a country where the company is located and with the industry being the unique control variable that strengthens this relationship.

scholarly journals Experimental Investigation of the Effects of Irradiating Schemes in Laser Tube Bending Process

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1123
Author(s):  
Mehdi Safari ◽  
Ricardo J. Alves de Sousa ◽  
Jalal Joudaki
Keyword(s):  
Laser Beam ◽  
Contact Process ◽  
Steel Tube ◽  
Thickness Variation ◽  
Tube Bending ◽  
Lateral Bending ◽  
Bending Angle ◽  
Laser Tube ◽  
Bending Process ◽  
Thickness Variations

The laser tube bending process (LTBP) process is a thermal non-contact process for bending tubes with less springback and less thinning of the tube. In this paper, the laser tube bending process will be studied experimentally. The length of irradiation and irradiation scheme are two main affecting process parameters in the LTBP process. For this purpose, different samples according to two main irradiation schemes (Circular irradiating scheme (CIS) and axial irradiating scheme (AIS)) and different lengths of laser beam irradiation (from 4.7 to 28.2 mm) are fabricated. The main bending angle of laser-bent tube, lateral bending angle, ovality, and thickness variations is measured experimentally, and the effects of the irradiating scheme and the length of irradiation are investigated. An 18 mm diameter, 1 mm thick mild steel tube was bent with 1100 Watts laser beam. The results show that for both irradiating schemes, by increasing the irradiating length of the main and lateral bending angle, the ovality and thickness variation ratio of the bent tube are increased. In addition, for a similar irradiating length, the main bending angle with AIS is considerably higher than CIS. The lateral bending angle by AIS is much less than the lateral bending angle with CIS. The results demonstrate that the ovality percentage and the thickness variation ratio for the laser-bent tube obtained by CIS are much more than the values associated with by AIS laser-bent tube.

Designing a Cultural Heritage Articulated Warning System (CHAWS) strategy to improve disaster risk preparedness in Brazil

2019 ◽  
Vol 29 (1) ◽  
pp. 65-85
Author(s):  
Victor Marchezini ◽  
Allan Yu Iwama ◽  
Danilo Celso Pereira ◽  
Rodrigo Silva da Conceição ◽  
Rachel Trajber ◽  
...  
Keyword(s):  
At Risk ◽  
Cultural Heritage ◽  
Local Community ◽  
Warning System ◽  
Disaster Risk ◽  
Civil Defense ◽  
Content Type ◽  
Key Factor ◽  
Scientific Challenge ◽  
Risk Preparedness

Purpose The purpose of this paper is to study an articulated warning system that provides information about the heritage at risk and encourages a dialogue between the heritage sector, civil defense agencies and local communities. Design/methodology/approach The databases from the National Heritage Institute, National Civil Defense, National Geological Service and National Early Warning System were investigated and the local community provided input which helped form a participatory risk mapping strategy for a warning system in the heritage sector. Findings There is little knowledge of the Brazilian heritage that is at risk and a lack of coordination between the cultural heritage and DRR sectors. This means that there is a need to organize the geo-referenced databases so that information can be shared and the public provided with broader access. As a result, there can be a greater production, dissemination and application of knowledge to help protect the cultural heritage. Practical implications The findings can be included in the debate about the importance of framing disaster risk management (DRM) policies in the Brazilian heritage sector. Social implications The findings and maps of the case study in the town of São Luiz do Paraitinga involve the heritage sector, civil defense agencies and local people and can be used for disaster risk preparedness. Originality/value A DRM program is being formulated in Brazil. However, the kind of strategy needed to incorporate the heritage sector in this program stills needs to be planned, and the knowledge of the cultural heritage at risk is a key factor when faced with this new social and scientific challenge.

Sign in / Sign up

Export Citation Format

Share Document