Assessment of the non-woven, goose down and duck down as thermally insulating materials for the clothing protecting against cold

2017 ◽  
Vol 29 (3) ◽  
pp. 380-393 ◽  
Author(s):  
Anna Katarzyna Dabrowska ◽  
Grazyna Bartkowiak ◽  
Jagna Karcz ◽  
Iwona Frydrych
Keyword(s):  
Water Vapor ◽  
Thermal Resistance ◽  
Thermal Performance ◽  
Design Methodology ◽  
Air Permeability ◽  
Insulating Layer ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Physical Features ◽  
High Bulk

Purpose The purpose of this paper is to compare morphological and physical features of three kinds of materials intended for the insulating layer in the clothing protecting against cold – high-bulk non-woven, goose down (GD) and duck down (DD). Design/methodology/approach Comparison of thermal performance of developed textile systems with the non-woven, GD and DD content was based on basic biophysical properties related to comfort sensations of the user such as thermal resistance, water vapor resistance and air permeability. In this study, light microscopy and scanning electron microscopy methods were employed to visualize the surface and internal structure of non-woven, GD and DD samples. Findings The paper indicates the advantages and disadvantages of each of selected insulating material. For the down samples, significantly higher thermal resistance in a dry state than for the non-woven samples can be achieved. Meanwhile, textile systems with the non-woven provide lower value of water vapor resistance. The selected textile systems for the research were characterized by a comparable air permeability. Originality/value This paper allows for an evaluation of high-bulk non-woven, DD and GD samples in terms of providing optimal thermal performance in clothing protecting against cold.

Thermal comfort properties of weft knitted quilted fabrics

2020 ◽  
Vol 32 (6) ◽  
pp. 837-847 ◽  
Author(s):  
Sadaf Aftab Abbasi ◽  
Arzu Marmaralı ◽  
Gözde Ertekin
Keyword(s):  
Thermal Conductivity ◽  
Water Vapor ◽  
Thermal Resistance ◽  
Thermal Comfort ◽  
Water Vapor Permeability ◽  
Air Permeability ◽  
Vapor Permeability ◽  
Content Type ◽  
Thermal Comfort Properties ◽  
Thermal Absorptivity

PurposeThis paper investigates the thermal comfort properties of quilted (jersey cord) fabrics produced with different width of diamond pattern, different filling yarn linear density and different types of material.Design/methodology/approachA total of 12 fabrics were knitted by varying the width of diamond pattern (1 and 3 cm), the filling yarn linear density (300 and 900 denier) and the type of materials (cotton, polyester and their combination). In this regard, air permeability, thermal conductivity, thermal resistance, thermal absorptivity and relative water vapor permeability of these fabrics were measured and evaluated statistically.FindingsThe results showed that fabrics knitted using cotton yarn in both front and back surfaces exhibit higher thermal conductivity, thermal absorptivity and relative water vapor permeability characteristics; whereas samples knitted using polyester yarn in both surfaces have higher air permeability and thermal resistance. As the linear density of filling yarn increases, thickness and thermal resistance of the samples increase and air permeability, thermal conductivity, water vapor permeability characteristics decrease. When the effect of the width of diamond pattern compared, it is seen that an increase in the width of pattern lead to an increase in thickness and thermal resistance and a decrease in thermal conductivity, thermal absorptivity and water vapor permeability values.Originality/valueMany researches were carried out on the thermal comfort properties of knitted fabrics, however there is a lack of research efforts regarding thermal comfort properties of quilted fabrics.

Comfort properties of Kota Doria fabrics

2016 ◽  
Vol 20 (1) ◽  
pp. 48-52
Author(s):  
Kavita Choudhary ◽  
Suman Pant
Keyword(s):  
Thermal Resistance ◽  
Design Methodology ◽  
Air Permeability ◽  
The Other ◽  
Silk Fabric ◽  
Content Type ◽  
Moisture Management

Purpose This paper aims to present comfort properties of bamboo-silk and cotton-silk Kota Doria fabrics. Design/methodology/approach Two types of Kota Doria fabrics were manufactured: one from the mixture of silk and bamboo yarns and the other from the mixture of cotton and silk yarns. Air permeability, thermal resistance and moisture management properties were determined. Findings Air permeability of bamboo-silk fabric was higher than that of cotton-silk fabric, whereas thermal resistance was less. Moisture management of both the fabrics was almost the same.

Evaluation of compression-recovery and thermal characteristics of multilayer bedding textiles

2020 ◽  
Vol 32 (5) ◽  
pp. 631-643
Author(s):  
Sedat Özer ◽  
Yaşar Erayman Yüksel ◽  
Yasemin Korkmaz
Keyword(s):  
Thermal Conductivity ◽  
Sleep Quality ◽  
Thermal Comfort ◽  
Sleep Duration ◽  
Human Body ◽  
Design Methodology ◽  
Thermal Characteristics ◽  
Air Permeability ◽  
Content Type ◽  
Thermal Comfort Properties

PurposeDesign of bedding textiles that contact the human body affects the sleep quality. Bedding textiles contribute to comfort sense during the sleep duration, in addition to ambient and bed microclimate. The purpose of this study is to evaluate the effects of different layer properties on the compression recovery and thermal characteristics of multilayer bedding textiles.Design/methodology/approachIn this study, woven and knitted multilayer bedding textiles were manufactured from fabric, fiber, sponge and interlining, respectively. Different sponge thickness, fiber and interlining weight were used in the layers of samples. Later, the pilling resistance, compression and recovery, air permeability and thermal conductivity of multilayer bedding textiles were investigated.FindingsThe results indicated that samples with the higher layer weight and thickness provide better compression recovery and lower air permeability properties. It was also found that knitted surfaces show the higher air permeability than the woven surfaces depending on the fabric porosity. Layer properties have insignificant effect on the thermal conductivity values.Originality/valueWhile researchers mostly focus on thermal comfort properties of garments, there are limited studies about comfort properties of bedding textiles in the literature. Furthermore, compression recovery properties of bedding textiles have also a great importance in terms of comfort. Originality of this study is that these properties were analyzed together.

Current CITE-ings from the popular and trade computing press: telework and telecommuting

2016 ◽  
Vol 33 (1) ◽  
pp. 21-22 ◽  
Author(s):  
Martin Kesselman
Keyword(s):  
Literature Review ◽  
Design Methodology ◽  
Virtual Reference ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Better Than

Purpose – This article examines Current CITE-ings from the Popular and Trade Computing Press, Telework and Telecommuting Design/methodology/approach – The methodology adopted is a literature review. Findings – Readily available technologies now allow librarians to perform most of their work-offsite. Some traditional building-based services such as reference, have been taken over by virtual reference and now even instruction offers options on par with or even better than classroombased questions such as a webinar that can be viewed and reviewed at any time or by having librarians embedded into various courseware packages. Researchlimitations/implications – Librarians no longer need be limited to a single library; groups of subject librarians can work together in the cloud to provide services to multiple universities. Originality/value – This article collates some articles from the non-library literature that mayprovide some ideas and review advantages and disadvantages for both the library and employee

Makers on the move: a mobile makerspace at a comprehensive public high school

2015 ◽  
Vol 33 (4) ◽  
pp. 497-504 ◽  
Author(s):  
IdaMae Louise Craddock
Keyword(s):  
High School ◽  
Public School ◽  
Design Methodology ◽  
School Setting ◽  
Maker Movement ◽  
Public High School ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Maker Culture ◽  
The Maker Movement

Purpose – The purpose of this paper is to describe the implementation of a mobile makerspace program in a public school setting. Insights, challenges, successes, projects as well as recommendations will be shared. Design/methodology/approach – This paper describes a mobile makerspace program in a public high school in Virginia. It discusses the growth of mobile making, the advantages and disadvantages of mobility, and how the program was implemented. Findings – Mobile makerspaces are a fast-growing manifestation of maker culture. It is possible to have a makerspace in a public school and take the maker culture to other schools in the area. Having a steady supply of students or library interns that are willing to travel to other schools is critical. Originality/value – Makerspaces in libraries is still a relatively new phenomenon. While the research is coming on stationary makerspaces, mobile making is a new horizon for the maker movement. This paper seeks to provide a description of one such program.

Think about it – can portrayals of homosexuality in advertising prime consumer-perceived social connectedness and empathy?

2017 ◽  
Vol 51 (1) ◽  
pp. 82-98 ◽  
Author(s):  
Nina Åkestam ◽  
Sara Rosengren ◽  
Micael Dahlen
Keyword(s):  
Design Methodology ◽  
Social Connectedness ◽  
Experimental Studies ◽  
Social Effects ◽  
Attitudes Toward Homosexuality ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Thought Listing ◽  
Societal Level ◽  
Practical Implications

Purpose This paper aims to investigate whether portrayals of homosexuality in advertising can generate social effects in terms of consumer-perceived social connectedness and empathy. Design/methodology/approach In three experimental studies, the effects of advertising portrayals of homosexuality were compared to advertising portrayals of heterosexuality. Study 1 uses a thought-listing exercise to explore whether portrayals of homosexuality (vs heterosexuality) can evoke more other-related thoughts and whether such portrayals affect consumer-perceived social connectedness and empathy. Study 2 replicates the findings while introducing attitudes toward homosexuality as a boundary condition and measuring traditional advertising effects. Study 3 replicates the findings while controlling for gender, perceived similarity and targetedness. Findings The results show that portrayals of homosexuality in advertising can prime consumers to think about other people, thereby affecting them socially. In line with previous studies of portrayals of homosexuality in advertising, these effects are moderated by attitudes toward homosexuality. Research limitations/implications This paper adds to a growing body of literature on the potentially positive extended effects of advertising. They also challenge some of the previous findings regarding homosexuality in advertising. Practical implications The finding that portrayals of homosexuality in advertising can (at least, temporarily) affect consumers socially in terms of social connectedness and empathy should encourage marketers to explore the possibilities of creating advertising that benefits consumers and brands alike. Originality/value The paper challenges the idea that the extended effects of advertising have to be negative. By showing how portrayals of homosexuality can increase social connectedness and empathy, it adds to the discussion of the advantages and disadvantages of advertising on a societal level.

Characterization of structure and air permeability of aromatherapic terry textile

2016 ◽  
Vol 28 (1) ◽  
pp. 2-17 ◽  
Author(s):  
Salvinija Petrulyte ◽  
Deimante Vankeviciute ◽  
Donatas Petrulis
Keyword(s):  
Statistical Analysis ◽  
Physical Properties ◽  
Design Methodology ◽  
Air Permeability ◽  
Factorial Designs ◽  
Linear Type ◽  
Content Type ◽  
Mathematical Equations ◽  
Binder Concentration

Purpose – The purpose of this paper is to investigate the physical properties of smart aromatherapic ramie/cotton terry fabrics containing microcapsules (MC) with essential Eucalyptus oil. Design/methodology/approach – Terry fabrics are manufactured by changing the weft density. The air permeability is determined for grey and microencapsulated textile. The factorial designs are made. For informative experiment the linear type of regression is analysed. Development of physical properties of microencapsulated terry fabrics is discussed. Findings – The air permeability of aromatherapic terry fabrics is determined. All statistical analysis is performed. Appropriate conclusions about the influence of fabric’s structure and microencapsulating process on terry fabric quality are made. Originality/value – To date there are no investigations concerning terry textiles with fragrance MC. This study developed analysis and empiric mathematical equations suitable for evaluating and designing terry fabrics with the air permeability required. Assessment of the influence of fabric’s weft density and binder concentration for the air permeability of terry textile is proposed.

Modelling blockchain-based business processes: a comparative analysis of BPMN vs CMMN

2021 ◽  
Vol 27 (2) ◽  
pp. 638-657
Author(s):  
Fredrik Milani ◽  
Luciano Garcia-Banuelos ◽  
Svitlana Filipova ◽  
Mariia Markovska
Keyword(s):  
Design Methodology ◽  
Business Processes ◽  
Process Analysis ◽  
Process Models ◽  
Disruptive Technology ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Blockchain Technology ◽  
Block Chain ◽  
Insight Into

PurposeBlockchain technology is increasingly positioned as a promising and disruptive technology. Such a promise has attracted companies to explore how blockchain technology can be used to gain significant benefits. Process models play a cardinal role when seeking to improve business processes as they are the foundation of process analysis and redesign. This paper examines how blockchain-oriented processes can be conceptually modelled with activity- (BPMN) and artifact-centric (CMMN) modelling paradigms.Design/methodology/approachThis paper discusses how commonly occurring patterns, specific to block-chain-based applications, can be modelled with BPMN and CMMN. Furthermore, the advantages and disadvantages of both notations for accurately representing blockchain-specific patterns are discussed.FindingsThe main finding of this paper is that neither BPMN nor CMMN can adequately and accurately represent certain patterns specific for blockchain-oriented processes. BPMN, while supporting most of the patterns, does not provide sufficient support to represent tokenization. CMMN, on the other hand, does not provide support to distinguish between activities executed and data stored on-chain versus off-chain.Originality/valueThe paper provides insight into the strengths and weaknesses of BPMN and CMMN for modelling processes to be supported by blockchain. This will serve to aid analysts to produce better process models for communication purposes and, thereby, facilitate development of blockchain-based solutions.

Influence of sublimation process on air permeability and water absorption dynamics

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Brigita Kalendraite ◽  
Jolita Krisciunaite ◽  
Daiva Mikucioniene
Keyword(s):  
Water Absorption ◽  
Design Methodology ◽  
Air Permeability ◽  
Knitted Fabrics ◽  
Content Type ◽  
Sublimation Process ◽  
Textile Fabrics ◽  
High Temperature And Pressure ◽  
Before And After ◽  
Temperature And Pressure

PurposeThe purpose of this research was to find the influence of sublimation process on air permeability and water absorption dynamics of knitted and woven polyester-based fabrics.Design/methodology/approachThree different sublimation designs were prepared and applied (keeping the same sublimation parameters) for eight variants of knitted and four variants of woven polyester-based fabrics. Air permeability and water absorption dynamics during 180s period was measured and compared before and after the sublimation process.FindingsAccording to the obtained results, high temperature and pressure applied in sublimation process have influence on the porosity and air permeability of knitted fabrics; however, the influence on water absorption dynamics is minimal. Sublimation design dos not have any influence on the mentioned properties.Originality/valueThe obtained results of the sublimation process influence on air permeability and water absorption dynamics of knitted and woven polyester-based fabrics will help to understand how sublimation process can affect comfort properties of textile fabrics.

Influence of copyright exceptions and limitations on access to information in Kenya, Ghana and Uganda libraries

2020 ◽  
Vol 41 (6/7) ◽  
pp. 565-577
Author(s):  
Magdaline Wanjiru Mungai ◽  
Selikem Sebuava Dorvlo ◽  
Asaph Nuwagirya ◽  
Marlene Holmner
Keyword(s):  
Best Practices ◽  
Design Methodology ◽  
Information Access ◽  
Empirical Literature ◽  
Access To Information ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Depth Analysis ◽  
Exceptions And Limitations ◽  
Improve Access

PurposeCopyright exceptions promote access to information by users without breaching copyright. This research paper reviews copyright exceptions in Kenya, Ghana and Uganda and how they influence access to information in libraries. Objectives were to find out the implications of copyright exceptions in Kenya, Ghana and Uganda; advantages and disadvantages of copyright exceptions for libraries; and recommend best practices of copyright exceptions.Design/methodology/approachThis is a desktop research reviewing empirical literature and incorporating authors' experiential knowledge in their information profession. Authors have interrogated copyright exceptions in their home countries' copyright acts, policy documents and peer-reviewed articles on copyright and information access. They analysed the documents as stated to deduce key recommendations regarding ideal copyright exceptions.FindingsThe study established that copyright exceptions do not always improve access as intended because they are inadequate, ignoring key library functions. Major inconsistencies exist in the exceptions in these countries; key terminologies have not been defined; and the concept is not well understood. Librarians lack sufficient knowledge on exceptions, hence lack self-efficacy in educating users. Kenya, Ghana and Uganda should improve and harmonize their copyright acts to cover key library functions.Originality/valueThis study provides in-depth analysis of historical and modern practices of copyright exceptions in the three countries revealing useful comparative insights. Previous studies looked at the issues from individual countries perspective.

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