Review on biogas production processess

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Renovation Spaces in Heritage Districts: The Reviving and Renovation of Culturally and Historically Open Spaces in Islamic Regions

The study depends on a spatial orientation to open urban spaces in heritage cities for potential investment opportunities after eliminating the garbage and ruination. Spaces such as alleys must take their role to host everything from live music and dinner on candle lights to traditional games gatherings under colorful traditional sculptures to highlight historical values at the alley, where spaces transform into emerging and effective public places creating public awareness. Thus, these spaces, such as streets and alleyways are transformed to a creative district block that is enriched with arts, architectures, fashion shows, restaurants, coffee shops, music, museums, shopping stores, commercial agencies and tourist offices, theaters, galleries, cultural houses, libraries, and all entertainment means. Moreover, sustainable transportation devices which do not use regular engines in any form and do not pollute the heritage spaces can be used to replace regular engines to take care of the environment. The regulation of power usage is important to make people able to discover the hidden beauty in these cities behind the buildings, whereas these spaces can attract tourists toward the city to accomplish a sustainable urban scope

THE EFFECTS OF VIDEO GAMES ON SCHOOL ACHIEVEMENT IN PRIMARY EDUCATION BASED ON SARAJEVO CITY: A DATA SCIENCE CASE STUDY

Video games are in recent years a big part of our daily life, especially for young people, and for most of them they have a very important role in their life. The video game industry and video games development are growing every day, and especially in the last period with Covid-19 pandemic and lockdown lot of people find comfort and spend their free time playing games, most of the consumers of the video games are young people or to be precise kids. The idea is to show and investigate the linking effects of video games to school achievement in primary education. Or to be precise by data analysis and data mining the aim is to investigate and show the results of the analysis. that are collected. Datapoints are collected from several elementary schools that are participating in this investigation. Data exploration and analysis consisted of exploring the most important features, relations between different features in order to better understand the data that we are dealing with. All analyses in this thesis are done in R programing language and RStudio as IDE

Quantum process tomography with coherent states

We develop an enhanced technique for characterizing quantum optical processes based on probing unknown quantum processes only with coherent states. Our method substantially improves the original proposal [M. Lobino et al., Science 322, 563 (2008)], which uses a filtered Glauber-Sudarshan decomposition to determine the effect of the process on an arbitrary state. We introduce a new relation between the action of a general quantum process on coherent state inputs and its action on an arbitrary quantum state. This relation eliminates the need to invoke the Glauber-Sudarshan representation for states; hence it dramatically simplifies the task of process identification and removes a potential source of error. The new relation also enables straightforward extensions of the method to multi-mode and non-trace-preserving processes. We illustrate our formalism with several examples, in which we derive analytic representations of several fundamental quantum optical processes in the Fock basis. In particular, we introduce photon-number cutoff as a reasonable physical resource limitation and address resource vs accuracy trade-off in practical applications. We show that the accuracy of process estimation scales inversely with the square root of photon-number cutoff.Comment: 18 pages, 2 figure

The relationship between water activity and fish spoilage during cold storage : a review

This review paper presents clearer picture about the relationship between spoilage of cold stored fish and water activity. The paper was an attempt of presenting the recent existing information and the latest development in this regard. It covered the relationship between water activity and moisture content, water activity control, spoilage of fish and its different phases and the relationship between the spoilage and water activity. The paper revealed that during the initial period of storage some of the characteristics of the fish product reduce in intensity or are lost and in the later stage bacterial degradation of tissues became evident. The water activity (aw) played an important factor in fish spoilage and the growth of different microorganisms depends on its rate. If the aw reduced to 0.6, the growth of bacteria and moulds can be prevented. The detection of spoilage can be determined by controlling water activity and in the same time can be retarded by reducing the aw of the fish by either drying or freezing to keep the fish in good stage with high nutritional and organoleptic quality. The information presented in this study is very important and can assist in preventing spoilage of fishes and their products particularly when production and processing operations are applied

Patients Undergoing Dental Surgery who are Taking Antiplatelet Medications

For the undergoing dental surgery patients taking antiplatelet medications, physicians and dentists must weigh the bleeding risks in continuing antiplatelet medications versus the thrombotic risks in interrupting antiplatelet medications. Bleeding complications requiring more than local measures for hemostasis are rare after dental surgery in patients taking antiplatelet medications. Conversely, the risk for thrombotic complications after interruption of antiplatelet therapy for dental procedures apparently is significant, although small. When a clinician is faced with a decision to continue or interrupt antiplatelet therapy for a dental surgical patient, the decision comes down to “bleed or die.” That is, there is a remote chance that continuing antiplatelet therapy will result in a (nonfatal) bleeding problem requiring more than local measures for hemostasis versus a small but significant chance that interrupting antiplatelet therapy will result in a (possibly fatal) thromboembolic complication. The decision is simple: It is time to stop interrupting antiplatelet therapy for dental surgery

Kalman Filter of Dynamic Hierarchical Model

In a specific way, the dynamic hierarchical model has been presented alongside with the derivation of the final formula of the Kalman filter. The filtering coefficient used along with the equations necessary for the filtering process has also been determined. Most of the related works were studied which gave rise to the problem statement of filtering problems placed under the case of st = . Most of the basic concepts of the dynamic hierarchical linear model were also displayed based on some previous works. A mathematical formula was also formulated and derived to calculate the dynamic hierarchical Kalman filter model, which results in a repetitive measure to estimate the model parameters. The proposed derived formula reduces the error associated with the model and achieves a successful optimal estimation of the parameters. This proves that the Kalman coefficient is the best filtering for any normal probability distribution and provides the least variance among the estimates. This study also provides an illustrative example of the model with the filtering process concerned. It was further illustrated that the findings can be used in practical applications, which reveals the fields that can be investigated in this area