Deconstructing Online Hospitality Review Systems

Online hospitality reviews have an important impact on consumers’ travel and hospitality booking decisions in the Internet age. A well-designed online hospitality review system is crucial to reduce the uncertainty of consumers’ decision making, to grasp the actual needs of consumers, and to improve the quality experience of platforms. In this context, this research conducts an empirical study on the design features of online hospitality review systems based on the Kano model. First, the paper analyzes the design features of online hospitality review systems. Then, the paper proposes an improved method to classify design features on the basis of the Kano questionnaire design and survey data. Finally, the paper quantitatively measures their importance in online hospitality review systems. Results can provide scientific basis for online travel platforms or hospitality operators to optimize the design of online hospitality review systems and to obtain reference value to increase the satisfaction of consumers’ decision making.

Metabolite Profiling and Classification of Highbush Blueberry Leaves under Different Shade Treatments

Blueberry belongs to the genus Vaccinium L. in the Ericaceae and is an economically important shrub that produces small berries that are rich in nutrients. There were differences in the appearance of blueberry leaves under different shade treatments. To explore the differences in metabolites in blueberry leaves under different shading treatments, nontargeted liquid chromatography–mass spectrometry (LC–MS) metabonomic analysis was performed. Different shade intensities resulted in significant differences in the contents of metabolites. A total of 6879 known metabolites were detected, including 750 significantly differentially expressed metabolites, including mainly lipids and lipid-like molecules and phenylpropanoid and polyketide superclass members. Based on a Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, the flavone and flavonol biosynthesis pathways were the most significantly enriched. The results of this study provide a reference and scientific basis for the establishment of a high-quality and high-yield shaded blueberry cultivation system.

How to avoid medical errors, how to respond and relate to them: a review of the scientific monograph «Defects in the provision of medical care»

Currently, the number of judicial proceedings on real and alleged offenses and disputes in area of provision of medical care has been exponentially increased. Some of such proceedings become publicly disclosed, but many more of them remain unnoted in mass media and civilian society as a whole. Increasing number of medical doctors has been accused of criminal offenses, being more often sentenced to real terms of imprisonment, showing a clear tendency to increase gravity of responsibility applied to medical doctors. This publication represents a peer-reviewed response of paramount importance to the book by A.A. Ponkina and I.V. Ponkin «Defects in the provision of medical care» raising ontological, value and technical issues for negative outcome of medical care – by the fault or in the absence of the fault of the doctor. The book puts the scientific basis beneath changes so much awaited by the Russian public health in relation to medical doctors, their social importance, objective limitlessness of their opportunities and capabilities in curing sick people and saving their lives.

Peculiarities of Using Plant Raw Materials in Breadmaking Technology

This research examined the scientific basis for an integrated approach to broadening bread and flour products. The effect of chia seeds on the organoleptic and physical-chemical indicators of the ”sweet bun” (brioche) was studied to substantiate the use of plant raw materials in the technology of bread and flour product preparation.Chia seeds contain essential amino acids, vitamins (mainly B), minerals (calcium, potassium, iron, magnesium, phosphorus and zinc) and antioxidants, so it is possible to use chia seeds to obtain a product that combines high organoleptic properties and is also enriched with essential substances. The findings from the organoleptic evaluation of the test specimens indicated that the added ingredients significantly affected the appearance, crust color and crumb condition;however,there was no change in the taste and smell of the pastry. The effect of chia seeds on the quality of the products during storage was assessed. It was found that when using chia seeds in the amount of 10% of the mass of flour, after 24 hours the decline in taste, smell,crumb elasticity and friabilitywas less noticeable. In addition, the analysis of the chemical composition of the brioche bun showed thatthe products with chia seeds were highly nutritious. Thus, the content of dietary fiber in the model specimen wastwo times higher than the values of the control specimen (10% of the daily requirement); the content of omega-3 and omega-6 polyunsaturated fatty acids was equivalent to 87.9% and 19.2% of the daily requirement, respectively. The use of chia seeds in a butter bun recipe (brioche) therefore enables theexpansion of the range of food products enriched with essential ingredients. Keywords: bread and flour products, sweet bun, brioche, chia seeds

Critical Appraisal of Large Vitamin D Randomized Controlled Trials

As a consequence of epidemiological studies showing significant associations of vitamin D deficiency with a variety of adverse extra-skeletal clinical outcomes including cardiovascular diseases, cancer, and mortality, large vitamin D randomized controlled trials (RCTs) have been designed and conducted over the last few years. The vast majority of these trials did not restrict their study populations to individuals with vitamin D deficiency, and some even allowed moderate vitamin D supplementation in the placebo groups. In these RCTs, there were no significant effects on the primary outcomes, including cancer, cardiovascular events, and mortality, but explorative outcome analyses and meta-analyses revealed indications for potential benefits such as reductions in cancer mortality or acute respiratory infections. Importantly, data from RCTs with relatively high doses of vitamin D supplementation did, by the vast majority, not show significant safety issues, except for trials in critically or severely ill patients or in those using very high intermittent vitamin D doses. The recent large vitamin D RCTs did not challenge the beneficial effects of vitamin D regarding rickets and osteomalacia, that therefore continue to provide the scientific basis for nutritional vitamin D guidelines and recommendations. There remains a great need to evaluate the effects of vitamin D treatment in populations with vitamin D deficiency or certain characteristics suggesting a high sensitivity to treatment. Outcomes and limitations of recently published large vitamin D RCTs must inform the design of future vitamin D or nutrition trials that should use more personalized approaches.

Biological features of seeds of a wild-growing species of Poterium polygamum

Relevance. Biological features (morphometric indicators, viability and germinating power) of Poterium polygamum seeds found in natural communites of the Stavropol Territory have been studied. The conservation of wild-growing plant species in the natural population and the rational use of their potential are relevant.Methods. Years of study — 2013–2021. The subject of the study is Poterium polygamum seeds. Seeds were collected in 2013. Studies were carried out according to the methods of studying seed material. Freshly harvested seeds and seeds of different shelf life were germinated in petri dishes at a temperature of 18–20 °C.Results. The collected seeds of Poterium polygamum are quite large. The length of the seeds is 4–5 mm, the width is about 2.5 mm. The mass of 1000 pieces of seeds on average was 10.59 grams. Complete absence of viability of freshly harvested Poterium polygamum seeds was revealed. After three months, seed viability was 97%. This is a shallow physiological rest associated with the post-harvest maturation period. During the storage of seeds, their high germination was established — from 70 to 100%. The duration of seed storage is 8 years. The largest number of germinated seeds and their germinating power were noted in the third year of their storage (100%). Seeds germinated on the third or fourth day. The differences between the viability of seeds and their germinating power are not great. In the eighth year of storage of Poterium polygamum seeds, viability and germinating power were slightly reduced. The storage period of seeds, in which they retain the ability to germinate and the germinating power, is long. It has been found that the wild species Poterium polygamum belongs to plants with a high (70 to 100%) viability. This species is regularly resumed in the natural population. The revealed biological features of Poterium polygamum seeds can become the scientific basis during the reconstruction of degraded natural grass stand and in selection work.

Controlling the Stress State of the Coating during Plasma Spraying

Coatings obtained by spraying materials with a high-temperature gas jet onto a substrate followed by thermal treatment of the deposited materials (thermal gas coatings) are increasingly being used. The practical experience of using thermal spray coatings, accumulated over the past 20–30 years in industries, shows that in this way it is possible, as a rule, to reduce the wear of machine parts operating under various conditions by a factor of 2–5. The effectiveness of the technology has also been proven in the protection of products from corrosion and thermal damage. The efficiency of the applied materials is determined by their structure, which largely depends on the choice of the composition of the material, the method, and modes of application. A comprehensive solution to these issues with the study of the mechanism of the processes of formation of thermal gas coatings will create a scientific basis for the technology for its successful implementation in production. At the same time, the importance of studying the processes and optimizing the technological parameters of spraying and subsequent coating treatment increases. Optimization is carried out, as a rule, according to the results of experiments. Let us consider the study on the example of the development of wear-resistant composite coatings with solid lubricant inclusions with the substantiation of the technique and criteria for optimizing technological parameters taking into account the most important properties of sprayed protective coatings.

Appearance of “Mental Hygiene” in Japan's Theory of Prenatal Care at the Beginning of the 20th Century- The Fusion of Public Hygiene and Eugenics: A Book Review

The Motherhood Protection Act (1996), which corresponds to modern family health in Japan, was enacted based on the Eugenics Protection Law (1948) for the protection of national eugenics. This leads us to the question of how maternal health and eugenics began to merge in Japan. Answer of this will elucidate the characteristics of family health in Japan and historical background. Maternal health and eugenics began to be fused in Japan in the early 20th century. In this paper, we examined Taikyō, which is the source of this fusion. This book was widely disseminated to the public. An educational book influenced the Japanese women’s movement. Taikyō argued that from the standpoint of public health, responsibility for prenatal care should be extended to the husband, family, society and the nation. It emphasized that “mental hygiene” is necessary to produce a genetically good child, and that spouse selection is important. Books on prenatal care published in the first half of the 20th century, following Taikyō’s description of prenatal care as a form of eugenics. The National Eugenic Act enacted to protect national hygiene inspired the classification of the Japanese as ​​a chosen nation. The theory of prenatal care, which was created from the combination of public hygiene and eugenics, provided a justification for the National Eugenic Act, and this still serves as the basis for the Eugenics Protection Law and Motherhood Protection Act. It provides the “scientific basis” for recognizing that “unsanitary” and “disability” are bad.

Effects of Plant Communities on Human Physiological Recovery and Emotional Reactions: A Comparative Onsite Survey and Photo Elicitation Study

We investigated the effects on humans, in terms of skin conductance levels (SCLs) and positive and negative affect schedule (PANAS) scores, of plant communities that differed in their vegetation structure (single-layer woodland, tree-shrub-grass composite woodland, tree-grass composite woodland, and single-layer grassland) through two perceptual methods: onsite surveying and photo elicitation. The results showed that (1) the choice of perception method significantly impacted the PANAS scores of the participants but had no influence on the SCL and (2) viewing a single-layer grassland reduced the SCL (representing the physiological stress level) and improved the positive affect score. The recovery effects for the four vegetation communities were ranked in the order of single-layer grassland > tree-shrub-grass composite woodland > single-layer woodland > tree-grass composite woodland. (3) Gender and professional background significantly impacted the plant community perception methods and landscape experience, and negative affect scores were lower for male participants than for female participants. Participants without backgrounds in landscape design exhibited higher positive affect scores under photo elicitation. Based on the conclusions drawn above, the onsite survey is preferable between the two perception methods. It is recommended that in future landscape designs, combinations of plant community types should be reasonably matched through onsite perception. These research results can provide a scientific basis for the future design of landscapes based on perception experience.

Factors Influencing the Interannual Variation in Biomass of Bottom-Cultured Yesso Scallop (Patinopecten yessoensis) in the Changhai Sea Area, China

Understanding how environmental factors impact the interannual variation in scallop growth and subsequently developing an easily obtained parameter to indicate this variation could provide a scientific basis for optimizing their aquaculture. In this study, we have set a growth scenario of uniformly sowed scallops of the same initial size in the Changhai sea area. The Yesso scallop culture ecosystem model was used to simulate the growth of bottom-cultured Yesso scallop each year from December 1, 2006 to November 30, 2017. The results show that the annual growth rate was higher in the northwest than in the southeast, and there were obvious high-value areas near the islands. The scallop biomass was significantly lower in 2009–2010 and reached its highest point in 2013–2014. Based on the match-mismatch conditions of bottom-water temperature, food availability, and the Yesso scallop growth process, three factors were determined: suitable growth days (SGD), restricted growth days (RGD), and food accumulation (FA). Subsequently, a multiple regression relationship was proposed with scallop biomass to explore the reasons affecting the interannual variations in scallop growth. We found that the anomaly of the contribution of SGD and FA for the scallop growth was small, and the interannual variation in scallop biomass was mainly regulated by RGD in winter. Our results indicated that the interannual variation in RGD in winter was closely related to the regional averaged air temperature in early winter. The air temperature in early winter is easily obtained in practice. Consequently, it could be used to predict the interannual growth of bottom-cultured scallops to improve aquaculture planning and management.