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The purpose of this study is to evaluate the yield, physico-chemical and microbiological parameters during the shelf life of the Minas Frescal cheese hand-manufactured by family farms.

In the milk, analyses of total bacterial counts, somatic cell counts and centesimal composition were performed. The milk coagulation was analyzed, with different curd times (40, 80 and 120 min), with respect to the proximate composition, pH, titratable acidity, yield and microbiological counts. The means were compared using the Tukey test with a significance level of 5 per cent. The most probable number of microorganisms were also determined in water.

The results for milk quality were within the requirements established in Normative Instruction 62, except for total dry extract. It was found that curd time did not influence the protein and fat in dry matter contents; however, the ash content in cheese of 40 min of curd time (2.8 g/100g) is significantly higher (p = 0.02) than the values found for the other curd times. The same behavior was observed for moisture content (p = 0.04). The parameters determining the cheese quality were outside the standards for human consumption, but this result is directly related to the water conditions, which were outside of potability levels. To meet the requirements established in the legislation, dairy products must follow strict standards of quality hygiene, both the raw material (water, milk) and their employees who act directly in the process.

For the preparation of the Minas Frescal cheese, it takes several steps, from obtaining the milk to the product ready to be consumed, so the importance of doing this monitoring and evaluating its quality.

The purpose of this paper is to investigate the impact of semi-circular zigzag-channel printed circuit heat exchanger (PCHE) design parameters on heat transfer and pressure drop of flows under high Reynolds numbers and provide new thermal-hydraulic correlations relevant to conditions encountered in natural gas processing plants.

The correlations were developed using three-dimensional steady-state computational fluid dynamics simulations with varying semicircular channel diameter (from 1 to 5 mm), zigzag angle (from 15° to 45°) and Reynolds number (from 40,000 to 100,000). The simulation results were validated by comparison with experimental results and existing correlations.

The results revealed that the thermal-hydraulic performance was mostly affected by the zigzag angle, followed by the ratio of the zigzag channel length to the hydraulic diameter. Overall, smaller zigzag angles favored heat transfer intensification while keeping reasonably low pressure drops.

This study is, to date, the only one providing thermal-hydraulic correlations for PCHEs with zigzag channels under high Reynolds numbers. Besides, the broad range of parameters considered makes the proposed correlations valuable PCHE design tools.

Rio de Janeiro has a high tourism potential, and it is the only Brazilian city among the 100 most visited in the world. However, the National Confederation of Commerce of Goods, Services and Tourism estimates that from the total loss of revenue from tourism activities of the State of Rio de Janeiro in 2017, approximately 29 percent of this loss can be attributed to increased violence in the State. Thus, this study aims to estimate the impact of violence on tourist arrivals to Rio de Janeiro.

The analysis is based on a sample of tourist arrivals to Rio de Janeiro from 51 countries, for the period between 2003 and 2016. Violence is represented by violent deaths in the State of Rio de Janeiro as well as in the capital. The estimates are based on panel data methodology. This study reports fixed-effect estimates as well as dynamic panel data estimates obtained through S-GMM. The study runs regressions for the full sample and also for two other samples: one with tourists coming from developed countries and another with tourists from developing countries.

The results reveal that violence negatively impacts tourism to Rio, and it shows that tourists from developed countries are more affected by violence than tourists from developing countries. The findings indicate that for each violent death in the capital of Rio de Janeiro, almost four tourists from developed countries and approximately three tourists from developing countries quit going to Rio de Janeiro.

The paper is one of the few to investigate the impacts of urban violence on tourism. The paper provides two contributions. First, it addresses the effect of violent deaths on tourism, bringing evidence to a destination with a high tourism potential, but which suffers from urban violence. Second, the study is the first to investigate whether this relation is different for tourists from countries with distinct levels of development (and thus with different levels of violence).

The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-09-2019-0590

The purpose of this work is to present a methodology that harnesses the computational power of multiple graphics processing units (GPUs) and hides the complexities of tuning GPU parameters from the users.

A methodology for auto-tuning OpenCL configuration parameters has been developed.

This described process helps simplify coding and generates a significant gain in time for each method execution.

Most authors develop their GPU applications for specific hardware configurations. In this work, a solution is offered to make the developed code portable to any GPU hardware.

The purpose of this paper is to apply institutional theory to demonstrate if and how mimetic, coercive and normative pressures shape technology adoption in hotels and lead to institutional isomorphism.

The study uses a qualitative approach involving interviews with managers representing 20 different hotels. A theory-driven thematic analysis was carried out with institutional theory concepts serving as guidance. The data analysis involved three phases, namely, pre-analysis, exploration and finalizing of results. Nvivo software was used to assist with the coding.

The results show signs of isomorphism on a large scale across several items related to technology adoption practices and uses of technological tools. For instance, hoteliers adopt similar standards, feel the need to mimic competition and all strive to be well-evaluated on sites such as TripAdvisor to achieve legitimacy in the marketplace. In contrast, coercive pressures from trade associations or other governing bodies seem to have little influence on technology adoption decisions. Instead, consumers are seen as powerful agents driving technology adoption in the industry. Regarding normative pressures, certification from third parties is perceived as a more important source of legitimization than recognition from government institutions or trade associations.

This study contributes to the still limited literature on institutional theory in tourism and provides an alternative perspective to understanding technology adoption from a rational technology acceptance model point-of-view.

該研究應用制度理論來證明模仿壓力, å¼·制壓力和規範壓力是否以及如何影響酒店的技術æ¡用並導致制度同構.

該研究æ¡用定性方法, 涉及與代表20家不同酒店的經理進行的訪談。以製度理論為指導, 進行了理論é©動的主題分析。數æ分析涉及三個é段：預分析, 探索和確定結果。 Nvivoè»件用於協助編碼.

結果表明, 在與技術æ¡用實踐和技術工具使用有關的若干項目中, 同構現像出現了大規模的跡象。例如, 酒店經ç者æ¡用類似的æ¨æº, 覺得有必要模仿競爭, 並且所有人都努力在TripAdvisor等網站上進行良好的評估, 以實現市å ´合法性。相反, 來自行業協會或其他理事機構的å¼·制壓力似乎對技術æ¡用決策幾乎沒有影響。相反, 消費者被視為推動行業技術æ¡用的å¼·大代理商。關於規範壓力, 與政府機構或行業協會的認可相比, 第三方的認證被認為是更重要的合法化來源。

這項研究為仍然有限的旅遊業體制理論文ç»做出了è²¢ç», 並提供了從理性技術接受模型的角度理解技術æ¡用的替代視角。

关键词: 關éµ字制度理論, 技術æ¡用, 合法性, 技術, 酒店, 制度同構

la investigación aplica la teoría institucional para demostrar si las presiones miméticas, coercitivas y normativas influyen en la adopción de tecnología en los hoteles y cómo conducen al isomorfismo institucional.

el estudio utiliza un enfoque cualitativo que involucra entrevistas con gerentes que representan a 20 hoteles diferentes. Se llevó a cabo un análisis temático basado en la teoría con conceptos de teoría institucional que sirven de guía. El análisis de datos incluyó tres fases: preanálisis, exploración y finalización de resultados. El software Nvivo se utilizó para ayudar con la codificación.

los resultados muestran signos de isomorfismo a gran escala en varios elementos relacionados con las prácticas de adopción de tecnología y el uso de herramientas tecnológicas. Por ejemplo, los hoteleros adoptan estándares similares, sienten la necesidad de imitar la competencia y todos se esfuerzan por ser bien evaluados en sitios como TripAdvisor para lograr legitimidad en el mercado. En contraste, las presiones coercitivas de las asociaciones comerciales u otros órganos de gobierno parecen tener poca influencia en las decisiones de adopción de tecnología. En cambio, los consumidores son vistos como agentes poderosos que impulsan la adopción de tecnología en la industria. Con respecto a las presiones normativas, la certificación de terceros se percibe como fuentes más importantes de legitimación que el reconocimiento de instituciones gubernamentales o asociaciones comerciales.

este estudio contribuye a la literatura aún limitada sobre teoría institucional en turismo y proporciona una perspectiva alternativa para comprender la adopción de tecnología desde un punto de vista racional del modelo de aceptación de tecnología.

Teoría institucional, Adopción de tecnología, Legitimidad, Tecnología, Hoteles, Isomorfismo institucional

Despite the advances in theory and practice about player behaviour in esports gaming literature, there is a lack of understanding as to whether esports are compatible with the values of Olympism and if they should be considered for future Games editions. The current study advances this line of research by examining esports player experiences, their effects on perceiving Olympic values, and the support towards the Olympics in order to verify if differences occur according to the cross-cultural environment.

Using a sample of 671 esports amateur gamers from three countries (Portugal, Brazil and Japan), structural equation models and a multigroup analysis were performed to analyse the differences in the hypothesized paths existing between the groups.

Results reveal that player in-game emotional experiences positively influence Olympic values perception across countries. The excellence and friendship values showed a positive effect on support intentions to the Games towards Portuguese and Brazilian players, while the respect value was the strongest predictor towards behavioural intentions in Japan. Cultural backgrounds and game genre in each country can explain player attitude towards the Olympic values shared on the online environment.

This study is able to provide a better understanding of how the Olympic values serve as a gratification in different cross-cultural environments according to the theory of uses and gratifications (U&G) and the theory of cultural dimensions. Complementarily, these findings can be used as valuable information for esports publishers and developers attempting to spread the Olympic values in the esports industry.

This paper aims to investigate the determinants and the evolution of voluntarily adopted firm‐level corporate governance practices in Brazil from 1998 to 2004 using broad corporate governance scores.

The authors employ a robust panel‐data procedure that accounts for the main sources of endogeneity to a very representative panel of Brazilian firms over a six‐year period. They address the endogeneity that arises from the simultaneous determination of the quality of corporate governance practices, the dependent variable, and possibly several firm attributes that are commonly employed as the determinants of such practices and are supposedly independent. Specifically, theoretical arguments and empirical evidence strongly suggest that the quality of corporate governance practices may influence some of the variables commonly used as its determinants just as much as they may be influenced by them.

The paper finds that firm‐level corporate governance practices are steadily improving but there is much room for improvement. Heterogeneity has increased. Voluntarily adhering to new stricter listing requirements is associated positively with improvements in firm‐level corporate governance practices. Reducing or not using non‐voting shares improves corporate governance practices.

The authors found no clear evidence of the influence of other potential determinants of the quality of corporate governance, such as growth prospects, firm size, firm value, and ownership structure. Thus, they doubt previous findings that suggest a causal relationship from value and ownership to corporate governance practices because value and ownership seem to be determined endogenously.

Policies directed to reduce the use of non‐voting shares should be implemented. Creating strict listing requirements that may be adopted voluntarily by firms could be a feasible solution to improve the quality of corporate governance practices in emerging market countries. Firms in an emerging market that find that issuance in the USA became too expensive or demanding may offer a substitute listing environment with credible requirements to foreign investors. Premium listings may partially compensate emerging market exchanges for their loss of trading to major markets.

The paper examines the evolution of the voluntary adoption of corporate governance practices in Brazil from 1998 through 2004 while most studies use cross‐section samples over one or a few years. Further, this is one of a few papers to analyze the impact of ownership structure on the quality of corporate governance practices by segregating control and cash flow rights.

The purpose of this paper is to show how to properly use the method of replacement to construct mixed two- and four-level minimum setup split-plot type designs to accommodate the presence of hard-to-assemble parts.

Split-plot type designs are economical approaches in industrial experimentation. These types of designs are particularly useful for situations involving interchangeable parts with different degrees of assembly difficulties. Methodologies for designing and analyzing such experiments have advanced lately, especially for two-level designs. Practical needs may require the inclusion of factors with more than two levels. Here, the authors consider an experiment to improve the performance of a Baja car including two- and four-level factors.

The authors find that the direct use of the existing minimum setup maximum aberration (MSMA) catalogs for two-level split-plot type designs may lead to inappropriate designs (e.g. low resolution). The existing method of replacement for searching exclusive sets of the form (α, β, αβ) available in the literature is suitable for completely randomized designs, but it may not provide efficient plans for designs with restricted randomization.

The authors provide a general framework for the practitioners and have extended the algorithm to find out the number of generators and the number of base factor at each stratum, which guide the selection of mixed two-level and four-level MSMA split-plot type designs.

This study aims to examine the evolution of three science, technology and innovation parks (STIPs) located in the state of Rio de Janeiro, Brazil, from the perspective of the university–industry–government linkages.

This is a multiple case study organized in two stages: first, bibliographic and documentary research to develop a theoretical framework and description of the innovation environments; and second, interviews and forms filling with 13 managers and stakeholders, combined with participant observation. The analysis and assessment of the evolution of each environment are based on a tool named Amaral’s Model for Innovation Environment Management (AMIEM).

There are critical issues for the development of STIPs, namely, governance structure, government participation and the relationship with knowledge sources such as universities. The time of existence is not a significant factor in reaching evolution. Although common factors are present in all environments, local particularities, specific characteristics, regional vocations, management leadership and other elements have an impact on park performance.

AMIEM is an assessment tool and a technological product, useful in mapping and evaluating innovation environments.

STIPs are dynamic and maturing, requiring active management and engagement with government and companies.

The results allow a better comprehension of the evolution and management of the STIPs located in the state of Rio de Janeiro. Another contribution lies in the organization of information to design public policies.