R3 Practices by the Restaurants and Hotel Industry for Sustainable Waste Management in Pune

R3(Reduce, reuse and recycle) plays an essential role in maintaining the Environment and eventually gives the Hotel Industry sustainable benefits. The research shows that hotels and restaurants must implement better waste management practices to benefit them and indi-rectly make the guests and consumers aware. This medium is qualitative research done by random sampling of consumers and specified restaurants and hotels with the questionnaire as a sampling tool. A chef must develop better R3 practices and bring existing R3 methods to others' notice to promote sustainable waste management. The finding further indicates that hotels and restaurants are happy with following R3, and they need to showcase to the world that they are following the practices and how they benefit the Environment in the way of sustainable waste management. This research article encourages hoteliers to become envi-ronmentally friendly increasingly to support the cause, and The research also includes the findings of other authors on the parallel lines to the objectives. 75% of the organizers ob-served the impact of R3 implementation in the different costs and positive rise in controlling food cost which reflects in particular percentage hike of profit, all the expenditure towards the system changes of R3 needed to be considered as Asset cost to have it reflected in the savings and incomes. 42% of owners of environmentally friendly restaurants observe that food cost is reducing up to 5% savings. Restaurants should prioritize convenient, eco-friendly practices and implement them one by one once they achieve success in the previous eco-friendly practice Scope of this study is limited to Pune city.

Dimensional stability of stored extended-pour irreversible hydrocolloids materials

The purpose of this study was to evaluate the linear dimensional stability of four extended-pour irreversible hydrocolloids (EPIHs). Material and Methods: Five samples per material (Cavex ColorChange, Cavex Orthotrace, Jeltrate Plus, and Orthoprint) were prepared following the manufacturers’ instructions. The samples were prepared using a cylindrical matrix coupled with a nylon-polyamide ring. Two parallel, 25-mm equidistant lines were made on its surface following ANSI/American Dental Association (ADA) Specification 18 for plaster reproducibility and compatibility and Specification 19 for linear dimensional change. The samples were stored in an environment with a relative humidity of 70% (± 3) and temperature of 28°C (± 2). Photo images were obtained using a digital camera to record images for 120 hours, with a standardized distance of 80cm between the lens and the specimen. Adobe Photoshop CS3 software was used for the measurement of the recorded images. The measurements refer to the equivalent distance between the two parallel lines printed on the samples. Data were analyzed using one-way analysis of variance (ANOVA) and Tukey’s test for multiple comparisons between the means of the groups. Results: There was no statistically significant difference (p > 0.05) when EPIHs were compared at the same time of evaluation. Orthoprint, Cavex Orthotrace, and Cavex Colorchange presented with least dimensional stability up to 24 hours (p > 0.05) of storage, followed by Jeltrate Plus (48 hours). Conclusions: Storage of EPIHs for more than 24 hours for Cavex ColorChange and 48 hours for others EPIHs studied produces significant dimensional changes in the impressions stored at a humidity of 70% (± 3) and temperature of 28°C (± 2). Extended storage times produce large dimensional changes.

Do parallel lines intersect?.. About communications, historiographic reflection and mutual perception of Soviet and émigré historians in the 1920s-1930s.

В предлагаемой рецензии анализируется монография В.Ю. Волошиной, В.С. Груздинской, В.П. Корзун, Д.М. Колеватова «Из двух углов: отечественный историографический процесс в оценке эмигрантских и советских историков (1920–1930-е гг.)». Авторы воссоздают коммуникативные сети, соединявшие эмигрантских и советских историков, исследуют проблемы взаимовосприятия двух научных сообществ.

Center-Slotted Wideband Hybrid 10 dB Coupler

In this paper, a wideband microstrip hybrid coupler designed, simulated, built and tested. These couplers have advantage of easy fabrication, lightweight and incorporation with other microwave devices and validated using 3D planar electromagnetic softwares like Sonnet Suites. The final design is composition of two parallel lines with symmetric slits and a center slot. Directional coupler is designed and simulated to operate in the frequency range from 1 GHz to 5 GHz with 2.4 Ghz coupling -10 dB return loss bandwidth between 1.6 - 4 GHz. The fabricated coupler shows good agreement between measured and simulated results with very low isolation characteristics. Four symmetric orthogonal U-Shaped structures at the center of the coupling region distinguishes the proposed design with other works. It makes significant improvement in calculation duration thereby achieving lower response latency and lowers the possible manufacturing errors compared with previously published similar works.

Geometric Constraints of Visual Space

Perspective space has been introduced as a computational model of visual space. The model is based on geometric features of visual space. The model has proven to describe a range of phenomena related to the visual perception of distance and size. Until now, the model lacks a mathematical description that holds for complete 3D space. Starting from a previously derived equation for perceived distance in the viewing direction, the suitability of various functions is analyzed. Functions must fulfill the requirement that straight lines, oriented in whatever direction in physical space, transfer to straight lines in visual space. A second requirement is that parallel lines oriented in depth in physical space, converge to a finite vanishing point in visual space. A rational function for perceived distance, compatible with the perspective-space model of visual space, satisfies the requirements. The function is unique. Analysis of alternative functions shows there is little tolerance for deviations. Conservation of the straightness of lines constrains visual space to having a single geometry. Visual space is described by an analytical function having one free parameter, that is, the distance of the vanishing point.