Miracle-dz/UniFAR-FTUs huggingface dataset:
The Valence of Online Consumer Reviews and Purchase Decision: Examining the Moderating Effects of Product Type and Consumer Expertise

The purpose of this study is to investigate the moderating effects of product type and consumer knowledge on the relationship between online consumer reviews and purchase decision. An experiment was conducted to test the hypotheses. The results substantiate the argument that the valence of online consumer reviews impacts the consumers’ purchase decision. That is, positive online consumer reviews will have positive effect on the purchase decision while the negative online consumer reviews impact the buying decision negatively. In addition, consumers are more likely to rely on the online consumer reviews to make the purchase decision for the durable products. For the non-durable products, online consumer review is only a supplemental information source for the purchase decision. Finally, the theoretical and practical implications conclude the remark.
Non-Linear Sliding Mode Controller for Photovoltaic Panels with Maximum Power Point Tracking

In this paper, nonlinear sliding mode control (SMC) techniques formulated for extracting maximum power from a solar photovoltaic (PV) system under variable environmental conditions employing the perturb and observe (P and O) maximum power point tracking (MPPT) technique are discussed. The PV system is connected with load through the boost converter. A mathematical model of the boost converter is derived first, and based on the derived model, a SMC is formulated to control the gating pulses of the boost converter switch. The closed loop system stability is verified through the Lyapunov stability theorem. The presented control scheme along with the solar PV system is simulated in MATLAB (matric laboratory) (SMC controller and PWM (Pulse Width Modulation) part) and PSIM (Power electronics simulations) (solar PV and MPPT algorithm) environments using the Simcoupler tool. The simulation results of the proposed controller (SMC) are compared with the classical proportional integral derivative (PID) control scheme, keeping system parameters and environmental parameters the same.
Preparedness of the Urban Health Extension Program to provide priority health services identified in its packages

Background: The Urban Health Extension Program (UHEP) – an innovative Ethiopian government plan to ensure health service equity by creating demand for essential health services through the provision of appropriate health information at a household level – is one of the three approaches of the national Health Extension Program (HEP). The UHEP is organized to deliver services within 16 packages. This study is aimed at assessing the preparedness of the program to provide priority health services identified in its packages. Methodology: The study covered sampled urban health extension facilities within five study regions, and included 26 facility assessments, and 330 urban health extension professionals’ (UHE-ps’) assessments. Results: According to the findings of the facility assessment, most items within the UHEP packages are available, even though very few facilities were found to stock delivery kits, dressing materials, and oxytocin. Adrenaline was also observed to be found in only a limited number of facilities. Regarding teaching aids and services guidelines, most of the facilities had health education materials, Health Management Information System (HMIS) recording and reporting formats, family health services guidelines, disease prevention guidelines, family planning guidelines, and environmental health guidelines. All of the facilities observed seemed to have most of the services that are prioritized within the UHEP packages. The items less available include HIV testing and counseling guidelines, first aid kits, and infant weighing scales. A knowledge assessment through a test of 327 UHE-ps using questions based on the guideline manual showed a mean score of 76.2% (32 out of 42), with a minimum of 33.3% (10 out of 42) and maximum of 90.5% (38 out of 42). Considering the mean score (76.2%) as the passing grade, only 43% of the UHE-ps scored above the average. Questions on controlling communicable diseases and postnatal care (PNC) were items on which the UHE-ps scored highest. Conclusions and Recommendations: The findings of the present survey show that there is an overall fair level of preparedness within the UHEP to provide the services identified within its various component packages. However, there are still a few services packages for which the UHE facilities do not seem to be well prepared. [Ethiop. J. Health Dev. 2020; 34(Special issue 2):76-82] Keywords: Preparedness; Urban Health Extension Program; Urban Health Extension Professionals.
Trap-nesting Bees from Protected Areas of Atlantic Forest, Southeastern Brazil

Areas with exceptional concentrations of endemic species and high habitat loss (or high level of threats) are often referred as hotspots (Myers et al., 2000). In Brazil, the Atlantic Forest is one of these areas (Mittermeier et al., 1999). Among the various typologies of the Atlantic Forest, the Ombrophylous Dense is the most vigorous, heterogeneous and complex formation, characterized by the presence of upper strata with trees above 25 and 30m height, perennial and densely arranged (Oliveira-Filho & Fontes, 2000). Such heterogeneous environment has a high diversity of bee species (Gonçalves & Brandão, 2008). Abstract The solitary bees that use preexisting cavities can be captured in trap-nests allowing to collect data on nesting biology and associated organisms. This man-made trap-nest facilitates the understanding of environmental components and landscape composition in the fauna of solitary bees. Here, we aimed to increase the knowledge about trapnesting bee species from four protected areas Atlantic Forest in southeastern Brazil and to test how abiotic local environmental components (temperature and rainfall) and forest cover affects the trap-nesting bee fauna. We recorded occupants from 847 nests founded by 17 bee species and seven cleptoparasite bees, associated to their host, summing 24 bee species sampled. The family with highest species richness was Megachilidae, and the species with the largest number of founded nests was Tetrapedia diversipes Klug (Apidae). Diptera, coleoptera, and hymenoptera parasitized 15.2% of the founded nests. The period of highest nest occupation occurred between November and February, which correspond to the warmest and most humid months in the region. We found significant positive correlation between the number of nests and monthly accumulated rainfall. We verified that Boraceia and Ilhabela have the best status conservation based on native forest cover and we sampled the highest diversity of species in these areas. We improved the knowledge on trap-nesting bees communities from Atlantic Forest on new species sampled in this biome with their nesting biology and highlighted that rainfall influences positively the nest founding throughout the year and native forest cover influences diversity of species. Sociobiology An international journal on social insects
A Hybrid Software Defined Network Platform for Undergraduate Research and Education

Software Defined Networks (SDNs) are leading the evolution toward network programmability and open architectures. While many corporations, nonprofits, and individuals have developed training on SDNs, the industry has a significant gap with the robustness of entrenched traditional network educational models, such as Cisco’s Networking Academy. The Department of Defense (DoD) will likely adopt some form of SDN into its global transport network at various tiers and authority boundaries. It is imperative for 21st century leaders to understand how and why the manner in which DoD provides Information Technology (IT) services to its customers is changing with such rapidity. Therefore, we developed three basic SDN course lessons as a base of knowledge and support and integrated a hybrid physical SDN research platform into existing laboratory infrastructure for faculty research and capstone projects for senior cadets. This was accomplished by leveraging existing SDN-related tutorials and resources and integrating them within a virtualized SDN simulation environment. The three lessons were developed for integration into our core networking course that describes fundamental networking concepts in the context of an SDN with a centralized control plane, while ensuring lesson learning objectives were achievable by non-technical majors yet sufficiently comprehensive across the fundamental operations of an SDN. The hybrid research platform consists of a number of Virtual Machines (VMs) running Mininet an SDN simulation environment and hosted on a VMware vSphere cluster with direct connectivity to twelve physical openflow-capable switches. This will allow students in the networking course to plan, design, implement, and test a basic SDN topology in either a virtual, physical, or hybrid environment. In addition, it will provide topological and experimental flexibility to student and faculty researchers and senior capstone project teams alike.
The Current Status of Business Intelligence: A Systematic Literature Review

Business intelligence has gained much attention the last few years and corporations has invested a lot of money in its operation to better prepare for the future. Studies show improvements in organizations performance both when it comes to better insight but also better decision making. Business intelligence software has made it possible for easier transformation of data. This article presents a systematic literature review on business intelligence and address the challenges and benefits of BI, along with its critical success factors.
News Media: An Agenda for Future Research

This study examines two central questions focusing on the news media and political change: How do we best understand the relationship between the news media and political change? How do we best understand the interaction between the news media and social movements? The analysis initially relates these two questions to three broad issues, exploring the importance of digital activism, stressing the need to examine issues related to power in order to fully grapple with these questions, and highlighting the ahistorical nature of research on digital activism and on disinformation campaigns. Following this discussion, the study defines a detailed agenda for future framing research, pointing to significant shortcomings in this perspective. These limitations include conceptual difficulties in the definition of frames, and the failure of many studies to analyze frame sponsorship and the centrality of resources in the ability to sponsor frames. Subsequently, this discussion focuses on the lack of attention to framing processes in most of the research literature, and the failure to consider emotions as an influence on framing. This study concludes by examining how engaged or activist research can address shortcomings in framing research. By revitalizing framing research, we can better understand the complex relationship between the news media and political change and between the news media and social movements.
Synthesis of Hydroxyl Terminated Epoxidized Natural Rubber as a Binder for Solid Rocket Propellant

Hydroxyl terminated epoxidized natural rubber (HTENR) was prepared by oxidative degradation of epoxidized natural rubber (ENR) with cobalt (II) acetylacetonate (co (II) aa) as a chemical agent in toluene as a solvent. Different of cobalt amount and reaction time used to study the effect on molecular weight. It was found that the number average molecular weight (Mn) and weight average molecular weight (Mw) depended on the reaction time and cobalt amount. Burning rate of solid propellant based on HTENR binder is 2.93mm/s which is approximately same with HTPB binder with 3.0mm/s. As a conclusion, HTENR binder is suitable to be used as a binder for solid rocket propellant.
Comparative Microbiological Evaluation after Caries Removal by Various Burs

ABSTRACT Aim The aim of the study was to compare the caries removal efficacy in terms of bacteriology and efficiency in terms of time taken by conventional and smart burs. Materials and methods A total of 40 extracted permanent molars with occlusal caries were selected for this study. These teeth were split at the center of carious lesion buccolingually, in order to obtain two similar halves. Thus, 80 samples were obtained in this way and were randomly divided into 2 groups of 40 samples each. Caries was removed using conventional burs in group I and polymer bur Smartprep (SS white) in group II. The time involved in caries removal was measured for both the groups. After excavation of all carious lesions, the samples were decalcified, dehydrated, and embedded in paraffin wax from which thin sections of 5 μm were obtained, which were histologically evaluated for bacterial presence under a light microscope. Results An intergroup comparison between conventional bur (group I) and smart bur (group II) showed a statistically nonsignificant difference in terms of the presence of microorganisms after caries removal with a p value of 0.073638 (p > 0.05). However, the time taken for caries removal was significantly more for smart burs than diamond burs with a p value of 0.001 (p < 0.05). Conclusion The polymer burs were found to be as effective as the conventional burs in terms of microbial presence after caries removal, but are more time-consuming than conventional burs. How to cite this article Somani R, Chaudhary R, Jaidka S, et al. Comparative Microbiological Evaluation after Caries Removal by Various Burs. Int J Clin Pediatr Dent 2019;12(6):524–527.
The Effect of Glass/PVA Composite Composition on the Adhesion and Strength of a 96% Alumina Joint

This research studied the effect of composition of a glass-based high temperature adhesive on the bond strength of 96% alumina bars. The adhesives studied were composed of 40-70% glass powder, 5-30% polyvinyl alcohol (PVA), and 15-55% water. Half-lengths of green alumina bend bars were bonded together with the adhesive to form a full length bar and then sintered. The flexural strengths of the sintered bars were measured and the resultant fracture surfaces were examined by SEM. The results showed that an initial increase in the PVA and glass content increased the flexural strength to the highest value of 120 MPa, but that further increases resulted in decreased strength. The strength values fluctuated when the PVA content was above 20% and the glass content was 40% or 60%, which indicated poor adhesive homogeneity. SEM analysis of the fracture surfaces showed a separation layer between the alumina and glass adhesive when the glass or PVA content were either too high or too low, which again indicated poor adhesive homogeneity. It was concluded that the optimal composition of the adhesive was 45-55% glass and 7-15% PVA, which gave a minimum flexural strength of 80 MPa.
A New Method to Estimate Parameters in the Simple Regression Linear Equation

Linear regression is widely used in various fields. Research on linear regression uses the OLS and ML method in estimating its parameters. OLS and ML method require many assumptions to complete. It is frequently found there is an unconditional assumption that both methods are not successfully used. This paper proposes a new method which does not require any assumption with a condition. The new method is called SAM (Simple Averaging Method) to estimate parameters in the simple linear regression model. The method may be used without fulfilling assumptions in the regression model. Three new theorems are formulated to simplify the estimation of parameters in the simple linear regression model with SAM. By using the same data, the simple linear regression model parameter estimation is conducted using SAM. The result shows that the obtained regression parameter is not quite far different. However, to measure the accuracy of both methods, a comparison of errors made by each method is conducted using Root Mean Square Error (RMSE) and Mean Averaged Error (MAE). By comparing the values of RMSE and MAE for both methods, SAM method may be used to estimate parameters in the regression equation. The advantage of SAM is free from all assumptions required by regression, such as error normality assumption while the data should be from the normal distribution.
Exosomes Transmit Viral Genetic Information and Immune Signals may cause Immunosuppression and Immune Tolerance in ALV-J Infected HD11 cells

Avian leukosis virus (ALV) is oncogenic retrovirus that not only causes immunosuppression but also enhances the host's susceptibility to secondary infection. Exosomes play vital role in the signal transduction cascades that occur in response to viral infection. We want to explore the function of exosomes in the spread of ALV and the body's subsequent immunological response. RNA-sequencing and the isobaric tags for relative and absolute quantitation (iTRAQ) method were used to detect differentially expressed genes (DEGs) and differentially expressed proteins (DEPs) in exosomes secreted by macrophage cells in response to injection with ALV subgroup J (ALV-J). RNA-sequencing identified 513 DEGs in infected cells, with specific differential regulation in mRNA involved in tight junction signaling, TNF signaling, salmonella infection response, and immune response, among other important cellular processes. Differential regulation was observed in 843 lncRNAs, with particular enrichment in those lncRNA targets involved in Rap1 signaling, HTLV-I infection, tight junction signaling, and other signaling pathways. A total of 50 DEPs were identified in the infected cells by iTRAQ. The proteins enriched are involved in immune response, antigen processing, the formation of both MHC protein and myosin complexes, and transport. Combined analysis of the transcriptome and proteome revealed that there were 337 correlations between RNA and protein enrichment, five of which were significant. Pathways that were enriched on both the RNA and protein levels were involved in pathways in cancer, PI3K-Akt signaling pathway, Endocytosis, Epstein-Barr virus infection. These data show that exosomes are transmitters of intercellular signaling in response to viral infection. Exosomes can carry both viral nucleic acids and proteins, making it possible for exosomes to be involved in the viral infection of other cells and the transmission of immune signals between cells. Our sequencing results confirme previous studies on exosomes and further find exosomes may cause immunosuppression and immune tolerance.
Possible Reduction Mechanisms of Exam Cheating Practices for First Year Management Regular Students in Human Resource Management Course

Exam cheating practice is one of the most bottlenecks in Ethiopian education system in general and Debre Markos University Burie Campus in particular. Complaints on devastating increase of exam cheating practice has been heard from different corners in the country including the apex of Ministry of Education, which is the core owners, teachers, students and school managers from elementary schools to higher education institutions. As a result, it is necessary to tackle such type of problem in order to improve the quality of education. Hence, an action research was undertaken in 2019 in first year students of management department Human Resource Management course so as to reduce exam cheating problems by identifying the different exam cheating methods, contributing factors for cheating and developing a strategy how to minimize such types of malpractice. The study was conducted by employing purposive sampling technique with well-prepared lakert scale and semi-structured questionnaires for students and the department staff instructors as well. Both primary & secondary data were incorporated. For this study 60 first year management students and 8 instructors were considered as the key respondents. The collected data were analyzed using descriptive statistics after properly encoded by SPSS software. Regarding to the exam cheating prevalence, 73.3% of respondents were confessed that cheating practice was common in first year management students. The major contributing factors that provoked students’ academics dishonest were hard exam, fear of failure, time pressure, competition with others, peer pressure, poor understanding of the exam question, demanding high score, high grade and over crowed exam room. Moreover, the study also identified the most frequently cheating strategies of written exam were sheet cribs, writing on their body, looking at another answer sheet, signals/gesture, using unauthorized materials, whisper/undertone and medical reason. In order to reduce exam cheating practice close supervision during the exam process, effective class room management, punishment, ensure effective teaching and learning process, used coded exam type, advise the students properly to use their time effectively, provide clear examination rule and enable them to prepared for exam well were a paramount strategies that will bring an improvement for quality education and cheating reduction.
Measurement-based modeling of RF-EMF exposure in urban environments using artificial intelligence techniques

Summary This study explores the use of artificial intelligence (AI) techniques to model the exposure to environmental radiofrequency (RF) electromagnetic fields (EMF) in an urban environment. For this, a spatial RF-EMF distribution was simulated in the 14th district of Paris, France, based on the existing base station infrastructure and a simple path loss model. Then, a number of sample measurements were used to build and compare an artificial neural network (ANN) model and a conventional kriging interpolation model. The ability to use additional information (such as distance to base stations) in the NN model results in a promising approach – especially when measurement data are scarce – and more research is encouraged.
A Comparative Analysis of the Spatial Characteristic of Apartment Buildings in Gaziantep, Turkey

This study aims to analyze the planning and design process, basic principles, and the change-transformation process of the apartment type residential buildings in Turkey, Gaziantep. The scope of the research consists of residential buildings built in the post-Republican period in Gaziantep. The basic materials of the research are zoning-city plans, plan explanation reports, plan diagrams of buildings and photographs based on field research. The method of the research is based on a comparative analysis of spatial changes in apartment buildings according to historical background. These changes evaluated from the analysis of a series of variables ranging from parcel-level to plan projects, access graphs to spatial size and ratios. As a result of the study, it is seen that the access graph and space sizes of the apartment-type residential buildings dating back to the 1960s, have significantly changed. However, differences and variations are mostly observed in the first plan typologies and it is noteworthy that this diversity has reduced, and similar plan schemes have been widely used in recent examples.