Product Quality
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Maren Weber ◽  
Nicoletta Sacchi ◽  
Sherry Haun ◽  
Ingrid Tistl ◽  
Stephanie Thompson ◽  

AbstractAccording to the Standards of the World Marrow Donor Association (WMDA) 2020 [1] unrelated stem cell donor registries are responsible for compliance of their donor centres with these Standards. To ensure high stem cell product quality and high standards for safety and satisfaction of voluntary unrelated stem cell donors, we present here guidelines for audits of donor centres (DC) that can be used by new and established donor registries. They have been developed for registries relying on independent national or international DCs for the recruitment and management of Unrelated Donors (UD) for verification typing (VT)/extended tying (ET), work up processes and Hemopoietic Progenitor Cell (HPC) donation. The main goal of these guidelines is to support registries in verifying and auditing their affiliated DCs to ensure they are compliant with the WMDA Standards, as well as WMDA recommendations. We define the general requirements and recommendations for collaboration with the DC and guidelines to manage the UD, step by step from recruitment to follow-up. We also provide a checklist, intended to serve as a resource for auditors performing an audit at a DC.

2022 ◽  
Vol 8 (1) ◽  
pp. 222-229
Akmalia Mutiara Dewi ◽  
Agus Kamaludin

This research aimed to develop an audiovisual-based PowToon animation video on the subject matter of chemical bonds and analyze the quality of the audiovisual-based animated video as learning media to study chemical bonds based on the assessment of material experts, media experts, chemistry teachers, and students’ responses. This research used development research methods (R&D) with a 4D development model (Define, Design, Development, and Dissemination). However, the 4D development model was limited to the dissemination stage in this research. The product is an animated video, which is in the form of mp4, containing chemical bond materials. Based on product quality assessment by a material expert, it gained a percentage of 84.375% with very good (VG) category; from the media expert’s assessment, it obtained a percentage of 96.428% with very good (VG) category; and according to assessment by chemistry teachers of high school, it got a percentage of 98.48% in the very good (VG) category. The product was responded to positively by students with a percentage of 95%. Based on the results of assessments, the animated video can be used as an alternative media for the chemistry learning process in the classroom

2022 ◽  
Vol 6 (2) ◽  
pp. 41
Mamluatul Maghfiroh ◽  
Rachma Indrarini

The development of the Indonesian cosmetic industry is relatively rapid because cosmetic products have become primary needs in Indonesia which the population is predominantly Muslim. This development caused competitive competition between cosmetics brands in Indonesia. Because of this competition, Wardah cosmetics is considering the halal label in its products and the quality of the products to increase consumer purchasing decisions. This research uses quantitative, associative methods to investigate the relationship between halal brands and product quality with the purchasing decision of Wardah cosmetics, especially in Surabaya. The number of samples used is 100 Muslim respondents who used Wardah cosmetics products in Surabaya. The data analysis technique used is multiple correlation coefficient analysis using SPSS version 25. The study results showed that halal labeling and product quality simultaneously had a significant and robust relationship with the purchasing decision of Wardah cosmetic products. While partially, the halal labels and product quality had a moderate and meaningful relationship with the purchase decision of Wardah cosmetics products.

2022 ◽  
Vol 0 (0) ◽  
Md Mosleh Uddin ◽  
Mark Mba Wright

Abstract Anaerobic digestion (AD) is a natural biochemical process that converts organic materials into combustible biogas. AD has been long practiced for agricultural and urban waste management; however, this process is getting more attention as an alternative energy source nowadays. Additionally, various biogas-derived value-added chemicals and transportation fuels are turning AD into a profitable biorefinery business model. Despite its numerous potentials, AD technologies still face challenges in conversion efficiency, process stability, product quality, and economic feasibility. Researchers have been devising various mechanisms to tackle these challenges. However, a widespread adoption of commercial-scale AD is yet to be visible. The development of AD technology requires a concerted effort of scientists from different backgrounds to ensure rapid expansion.

Polymers ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 313
Sergey Shevtsov ◽  
Igor Zhilyaev ◽  
Shun-Hsyung Chang ◽  
Jiing-Kae Wu ◽  
Natalia Snezhina

The increasingly widespread use of vacuum assisted technologies in the manufacture of polymer-composite structures does not always provide the required product quality and repeatability. Deterioration of quality most often appears itself in the form of incomplete filling of the preform with resin as a result of the inner and outer dry spot formation, as well as due to premature gelation of the resin and blockage of the vacuum port. As experience shows, these undesirable phenomena are significantly dependent on the location of the resin and vacuum ports. This article presents a method for making a decision on the rational design of a process layout. It is based on early forecasting of its objectives in terms of quality and reliability when simulating its finite element model, on the correlation analysis of the preliminary and final quality assessments, as well as on the study of the cross-correlation of a group of early calculated sub-criteria. The effectiveness of the proposed method is demonstrated by the example of vacuum infusion of a 3D thin-walled structure of complex geometry.

2022 ◽  
Vol 21 (1) ◽  
Rachel Wittenauer ◽  
Spike Nowak ◽  
Nick Luter

Abstract Background Rapid diagnostic tests (RDTs) for malaria are a vital part of global malaria control. Over the past decade, RDT prices have declined, and quality has improved. However, the relationship between price and product quality and their larger implications on the market have yet to be characterized. This analysis used purchase data from the Global Fund together with product quality data from the World Health Organization (WHO) and Foundation for Innovative New Diagnostics (FIND) Malaria RDT Product Testing Programme to understand three unanswered questions: (1) Has the market share by quality of RDTs in the Global Fund’s procurement orders changed over time? (2) What is the relationship between unit price and RDT quality? (3) Has the market for RDTs financed by the Global Fund become more concentrated over time? Methods Data from 10,075 procurement transactions in the Global Fund’s database, which includes year, product, volume, and price, was merged with product quality data from all eight rounds of the WHO-FIND programme, which evaluated 227 unique RDT products. To describe trends in market share by quality level of RDT, descriptive statistics were used to analyse trends in market share from 2009 to 2018. A generalized linear regression model was then applied to characterize the relationship between price and panel detection score (PDS), adjusting for order volume, year purchased, product type, and manufacturer. Third, a Herfindahl–Hirschman Index (HHI) score was calculated to characterize the degree of market concentration. Results Lower-quality RDTs have lost market share between 2009 and 2018, as have the highest-quality RDTs. No statistically significant relationship between price per test and PDS was found when adjusting for order volume, product type, and year of purchase. The HHI was 3,570, indicating a highly concentrated market. Conclusions Advancements in RDT affordability, quality, and access over the past decade risk stagnation if health of the RDT market as a whole is neglected. These results suggest that from 2009 to 2018, this market was highly concentrated and that quality was not a distinguishing feature between RDTs. This information adds to previous reports noting concerns about the long-term sustainability of this market. Further research is needed to understand the causes and implications of these trends.

Byung Cho Kim ◽  
So Eun Park ◽  
Detmar W. Straub

In pay-what-you-want (PWYW) pricing, buyers are allowed to pay any amount they want, often including a price of zero. Standard theory predicts that buyers are driven solely by their own interest and will always choose to pay nothing, making PWYW pricing impractical to use. Nonetheless, PWYW pricing has been consistently occurring in the marketplace. We build and analyze a theoretical model to explain the presence of PWYW pricing in the marketplace and identify the situations under which businesses are better off adopting it over the traditional posted pricing. Because the digital product domain is a particularly good fit for PWYW pricing because of its constant exposure to piracy threats, we focus on digital product firms and examine PWYW pricing as an alternative to their piracy prevention efforts. We show that PWYW pricing becomes a superior pricing strategy when the pirate version is quite similar to the authentic product and it is costly for the firm to improve its product quality. Moreover, if network externalities are present, PWYW pricing can outperform posted pricing only when the network externalities are weak. The results explain why PWYW pricing is rare in the established digital product marketplace, which exhibits strong network externalities.

Stefania Caso ◽  
Mathieu Aeby ◽  
Martin Jordan ◽  
Raphael Guillot ◽  
Jean‐Marc Bielser

2022 ◽  
Vol 88 (1) ◽  
Katherine Lavelle ◽  
Irina Sadovskaya ◽  
Evgeny Vinogradov ◽  
Philip Kelleher ◽  
Gabriele A. Lugli ◽  

Streptococcus thermophilus is an important starter culture bacterium in global dairy fermentation processes, where it is used for the production of various cheeses and yogurt. Bacteriophage predation of the species can result in substandard product quality and, in rare cases, complete fermentation collapse.

Rozzy Aprirachman ◽  
Diah Anggeraini Hasri

Indonesia’s economy has grown, which has led to the growth of a business. According to BPS Indonesia, there were 26 million more businesses in Indonesia in 2016. One of them is the cosmetics industry, which the minister of the industry says is important. Because there are so many different types of cosmetic industries and so much competition, manufacturers have to change their products to meet the needs of their customers. Eyeliner is a popular product in the cosmetics industry that many people use. Following the widening of Eyeliner products, many different brands came out with different levels of quality, features, and quantity, as well as other features. Consumers may switch brands because there are so many different brands for the same thing, along with their desire to find new products. Consumers look at the quality and features of a product, as well as other product attributes when they decide to switch brands. According to the results of data processing on hypothesis testing, Implora brand eyeliner has qualities and features that make people switch brands. This is based on validity, reliability, and classical assumption tests, as well as coefficients of determination. The sampling of 100 people was used in this study, which shows that product features and product quality have a big and positive impact on brand switching. According to the results of data processing on hypothesis testing, Implora brand eyeliner has qualities and features that make people switch brands. KEYWORDS: Product Features, Product Quality, Brand Switching, and Implora Eyeliner

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