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2022 ◽  
Vol 12 ◽  
Author(s):  
Ales Hanc ◽  
Bayu Dume ◽  
Tereza Hrebeckova

The study aims were focused on profiling eight hydrolytic enzymes by fluorescence method using a multifunctional modular reader and studying the proportion of basic microorganism groups during composting and vermicomposting of sewage sludge mixed with straw pellets in several proportions (0, 25, 50, 75, and 100%). The greatest decrease in enzymatic activity occurred in the first half of composting and vermicomposting. After 4 months of these processes, the least enzymatic activity was observed in the sludge with 50% and also 25% straw addition, indicating that straw is an important means for the rapid production of mature compost from sewage sludge. Enzymatic activity was usually less in the presence of earthworms than in the control treatment because some processes took place in the digestive tract of the earthworm. For the same reason, we observed reduced enzyme activity during fresh feedstock vermicomposting than precomposted material. The final vermicompost from fresh feedstocks exhibited less microbial biomass, and few fungi and G− bacteria compared to precomposted feedstock. The enzymatic activity during composting and vermicomposting of sewage sludge and their mixtures stabilized at the following values: β-D-glucosidase—50 μmol MUFG/h/g dw, acid phosphatase—200 μmol MUFP/h/g dw, arylsulphatase—10 μmol MUFS/h/g dw, lipase—1,000 μmol MUFY/h/g dw, chitinase—50 μmol MUFN/h/g dw, cellobiohydrolase—20 μmol MUFC/h/g dw, alanine aminopeptidase—50 μmol AMCA/h/g dw, and leucine aminopeptidase—50 μmol AMCL/h/g dw. At these and lesser values, these final products can be considered mature and stable.


2022 ◽  
Vol 10 (1) ◽  
pp. 61-67
Author(s):  
Sharada Khanal

The COVID-19 pandemic is rapidly accelerating the learning process. As a result, there has been a shift from face- to- face to virtual learning. The major purpose of this research was to identify the interest and attitude of students towards virtual learning during covid-19 pandemic. The study was to determine whether students are interested in virtual learning or not. This survey is based on primary data collected from students who are currently pursuing their degrees. Google form structured questionnaire was distributed via Messenger app to the students of Chitwan district colleges where virtual learning is going on using random sampling method. The result revealed that students are interested in virtual learning. The majority of students found it as an important means of making knowledge widerand bringing social changes despite hindrances (p= 0.001). Virtual learning is a powerful tool for teaching replacing face to face learning in any level as a quick solution to the crisis. However, successful implementation of virtual learning into curriculum requires a well thought-out strategy and equal access of all.


2022 ◽  
pp. 328-348
Author(s):  
Poshan Yu ◽  
Yifei Xu

In order to ensure the sustainable development of public private partnership (PPP) model and make the PPP health project ultimately meet the public expectation, the budgetary control and performance evaluation for PPP project is an important research topic. Budgetary control and performance evaluation is not only an important basis for project performance improvement, but also an important means for public departments to monitor and manage PPP health projects. This chapter aims to examine the effectiveness of PPP projects on the healthcare service provision in China. By analyzing the regional government finance and performances, this chapter attempts to elaborate the current dynamic of Chinese healthcare resources allocation by using PPP, and how this dynamic could be associated with the changing landscape of local economic conditions, in particular whether the application of PPP would help those regions with poor economic performance to close a gap in healthcare delivery.


2022 ◽  
Vol 355 ◽  
pp. 03001
Author(s):  
Wenwen Liu ◽  
Wei Xiong ◽  
Chi Han

Under the background of increasing pressure of satellite communication support, reasonable and efficient dispatch of communication satellite resources is an important means to improve the utilization efficiency of communication resources. Aiming at the resource scheduling task requirements of geostationary orbit communication satellite system, communication satellite resource scheduling (CSRS) model is established first of all, based on this, advances a kind of CSRS method based on improved whale optimization algorithm. In this method, the detection and search strategy is proposed and the crossover mutation operator is used to avoid the algorithm falling into local optimum. Simulation results show that IWOA can effectively improve the quality and stability of satellite resource scheduling.


Author(s):  
Ling Xu ◽  
◽  
Zhongwu Li

Knowledge sharing among teachers denotes an important means of promoting the professional growth of individual instructors. It enhances the competitiveness of school organizations and thus constitutes a focal aspect of knowledge management in universities. This study conducts an in-depth scrutiny of the knowledge sharing behaviors of teachers, examining their sharing intentions and attitude, support received from others, self-control. With this aim, this paper obtains data from 440 college teachers in Jiangxi Province in China. It then constructs a theoretical model reflecting these factors, and the collected data were analyzed through SPSS24 and AMOS24 to obtain the results. The results of this empirical study conducted in China demonstrate that the knowledge sharing intentions of teachers positively influence their knowledge sharing behaviors. Personal knowledge sharing attitudes and support received from others also constructively affect the knowledge sharing intentions of teachers. Self-control has a negative effect on knowledge sharing intentions and exerts an indirect influence on knowledge sharing behaviors. Knowledge sharing attitudes, support received from others, and self-control are strongly and positively correlated. This investigation suggests that the knowledge sharing intentions of teachers must first be enhanced to improve their knowledge sharing behaviors. The enthusiasm of teachers to share knowledge should be stimulated, and teachers should be encouraged to freely share their understanding with others. Further, their tight regulation of self-control should be appropriately relaxed.


2022 ◽  
Vol 35 (1) ◽  
pp. 0-0

The popularity of e-tailers has distorted the retail industry in India. Websites are becoming an important means through which customers get product information and purchase items for their needs. This research paper focuses on four dimensions, i.e. user interface, convenience, personalized recommendations, and perceived security of the website, to assess their impact on online customer satisfaction with and loyalty towards E-tailers. The study questionnaire used established measures. The data was collected from four large cities in India, namely Chennai, Mumbai, Kolkata and Delhi. Analysis of the survey results suggests that perceived website security is the most important dimension for customer loyalty. E-tailers have to ensure adequate security provisions in their websites to build up consumer perceptions of trust and so repeat business loyalty.


Author(s):  
Hussain Khalil Alshemsi ◽  
Abdulla Mohameed Ahmed Ayedh

Internal audit has become one of the most important means of organizations controlling tasks and achieving objectives. As the internal audit is an important activity for the organization to achieve its goals, adhere to regulations and legislation, and reduce cases of fraud, financial and administrative corruption. Therefore, the research aims mainly to identify the role of senior management in public shareholding companies in the telecommunications sector in the United Arab Emirates in supporting the internal audit unit. The study population consisted of 3 public shareholding companies in the UAE. To achieve the objectives of the research, the research relied on the analytical research method and the comparative research method, and the analysis of secondary data obtained from performance governance reports, and the most important findings of the research: There is administrative support for internal audit units by the boards of directors of public shareholding companies in the telecommunications sector in the United Arab Emirates And administrative support includes the five forms: planning, organizing, directing, leadership, motivating and controlling, and there is appropriate independence for the internal audit units, and the boards of directors take and implement the observations of the internal audit units.


2021 ◽  
Vol 38 (6) ◽  
pp. 1843-1851
Author(s):  
Ouarda Soltani ◽  
Souad Benabdelkader

The human color skin image database called SFA, specifically designed to assist research in the area of face recognition, constitutes a very important means particularly for the challenging task of skin detection. It has showed high performances comparing to other existing databases. SFA database provides multiple skin and non-skin samples, which in various combinations with each other allow creating new samples that could be useful and more effective. This particular aspect will be investigated, in the present paper, by creating four new representative skin samples according to the four rules of minimum, maximum, mean and median. The obtained samples will be exploited for the purpose of skin segmentation on the basis of the well-known Euclidean and Manhattan distance metrics. Thereafter, performances of the new representative skin samples versus performances of those skin samples, originally provided by SFA, will be illustrated. Simulation results in both SFA and UTD (University of Texas at Dallas) color face databases indicate that detection rates higher than 92% can be achieved with either measure.


2021 ◽  
Vol 12 (4) ◽  
Author(s):  
S. Yu. Bilous ◽  
R. K. Matiashuk

Nowadays in vitro methods, combined with ex situ and becoming an increasingly important means of preserving and maintaining the level of phytodiversity stability. Sorbus torminalis L. is a tree of the Rosaceae family, which grows on the territory of Ukraine, belongs to rare, valuable aboriginal species and is listed in the Red Book of Ukraine, with its protection status - endangered. The peculiarities of introduction of in vitro culture of perennial representatives of S. torminalis with the use of different types of explants, sterilizing substances, cultivation conditions and nutrient medium composition are presented in the paper. For in vitro culture of S. torminalis, annual shoots with apical and lateral buds 15-25 cm long are optimal. The influence of different sterilization options on the development of primary microshoots has been studied. For sterilization of artificially awakened and young shoots it is most effective to use 0.1% solution of AgNO3 (7 min) and 15% solution of H2O2 (10 min). The developed method of sterilization of S. torminalis explants provided 80-90% yield of aseptic plant material. It was found that the sterilization regime did not significantly affect the primary morphogenesis of explants and was uniform. The optimal components of nutrient media at the stage of introduction into vitro culture and primary morphogenesis of S. torminalis have been established. For the cultivation of different types of explants of S. torminalis, used WPM nutrient media with the addition of synthetic plant growth regulators 6-benzylaminopurine, thidiazuron, kinetin 0,5-1,5 mg mg∙l-1 and α-naphthylacetic acid 0,01-0,05 mg∙l-1 both alone and in combination with each other. In particular, for the regeneration of plants from the lateral and apical buds of explants is effective WPM medium with the addition of BAP 1,5 mg∙l-1 + 0,5 mg∙l-1 NAA and WPM + TDZ medium 0,5 mg∙l-1 with adding PVP 200 mg∙l-1. To induce the laying of additional buds and shoots on the explant from the apical meristems in the medium should be added 4,0 mg∙l-1 BAP + 0,01 mg∙l-1 NAA with the addition of PVP 200 mg∙l-1.


2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Daoling Liu

In the context of the “Internet +” era, educational information has become an inevitable trend in educational development. The successive introduction of relevant policies has laid the foundation for the steady development of educational information. Online open courses are an important means to expand teaching space and time, and this article aims to open up a new direction for the teaching reform and development of ideological and political courses through the combination of ideological and political courses and online open courses. This article proposes the analytic hierarchy process and the Delphi method. First, the Delphi method is used to revise the initially constructed indicator system; then, the analytic hierarchy process is used to design the weights of the indicator system; finally, we try to apply the established index system. The experimental results of this paper show that teacher expression and curriculum content have a greater impact on classroom teaching. The weight of teacher expression is 0.25, and the weight of curriculum content is 0.26.


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