American Scientific Research Journal for Engineering, Technology, and Sciences

Life Cycle of High Mass Star

Sabir Sadiq — Sat, 07 Jan 2023 00:00:00 +0000

In the present work, I shall explain the gravity and life cycle of a high mass Stars. Mathematical equations are important factors to describe the role of a gravity as a dark fabric distortion. The space of Universe is not empty at whole, but it is completed by a dark fabric matter and energy that distorted under the stress of a high mass Stars from their Birth to a Death. Dark fabric is warping strongly under the effect of Neutron Stars and black holes. Blue Supergiant stars are high mass Stars where their masses are very high may burn their fuel very quickly to produce new heavy atoms, and release tremendous amount of energy, and plasma. All main sequence stars in such high mass may die and expand to become a red supergiant when their fuel of fusion exhausted at the final stages of a star’s lifetime. Supergiant stars may die and explode with a big and luminous explosion that named a supernova. The remnant core of high mass stars may become a neutron star or black hole according to the mass of an exploded stars.

Martial Arts Practice and Economic Development : A Comparative Analysis

Aloumedjo Zam Thierry Farrel — Tue, 20 Feb 2024 00:00:00 +0000

There are few studies on the link inbetween the practice of martial arts and economic development of a country, especially in a comparative analysis. Most scientific works turn around topics such as martial arts and personal development, the spread of martial arts in the world, its actual practice or its industry. The aim of the present analysis is to shed more light in the interaction between martial arts practice and its impact on the fight against poverty or simply said socio-economic development. To reach that goal an analytic approach was adopted based on literature review, document search, statistics following a mixed approach borrowing from both induction and deduction. The most economic developped countries were cross-analysed with the ones where martial arts is mostly practiced and later inferences were drawn concerning certain less developped countries with a special case study of the country Cameroon. The results shows that martial arts have the untapped potential to cultivate a better world for all and promote sustainable development at individual and community levels. Sport, development and peace are intertwined as stated by the author in [1]. Martial arts is the cement and the social determinants of health, wealth and education.

Inventory of Urban Trees in the City of Bunia, Case of the Mudzipela District, Ituri Province, DRC

Tue, 12 Mar 2024 00:00:00 +0000

The choice of this investigation was motivated by the fact that knowledge of urban forests seems to be of little interest to researchers, given its absence in the local literature. The general objective of this work is to contribute to a better understanding of the floristic diversity of the Mudzi-pela district. The meth

odological approach adopted made it possible to count and identify the trees planted along 13 avenues. After analysing the data collected in the area, we arrived at the following results: 361 trees, divided into 36 species and 30 families along the main avenues in the district. The average above-ground biomass for the avenues studied was 0.5730±0.0907 (CV: 15.82%), corresponding to an average of 0.28461 ± 0.045341 kg of sequestered carbon. This testifies to the compensatory role of the tree species in the Mudzi-pela district in the emissions of carbon dioxide resulting from human activities. The study environment is highly species-diverse, with the Simpsom 1-D index tending towards 1 in all the avenues studied.

Detection of Rare Events: Cluster Based Preprocessing of the Training Set: The Case on Complaints for Invoice Time Series

Fri, 29 Mar 2024 00:00:00 +0000

Detection of rare events is a major problem when dealing with unbalanced data. In the application of machine learning tools, data is split into training and test samples and preprocessing is applied to the training set, with the aim of obtaining a more balanced sample. In this paper we discuss preprocessing methods applied to heterogenous data clustered with respect to expected anomaly types. We propose a method for deciding on oversampling and under-sampling from each cluster, based on the variability of the items in each cluster, using Principal Component Analysis. The method is applied to the problem of detecting anomalies in a time series invoices, with an average rate of complaints of orders 10^-4.

An Analysis of the Factors Influencing Achievement in Mathematics Geometry in Canadian High Schools

Emmanuel Byiringiro — Sat, 27 Jan 2024 00:00:00 +0000

This paper explored analysis of the factors influencing achievement in mathematics geometry among secondary school students. This study used descriptive survey design. Simple random sampling technique was further applied to obtain Mathematics teachers, students and principals targeted in this research equals to 258 staff. The study sampled 157 respondents. The collected data was analyzed using descriptive statistics, correlation, and regression analysis through the statistical package for social science (SPSS) version 21. The data collected were analyzed using descriptive statistics and multiple regression. The results of the findings indicated that the teaching strategies was more correlated with Geometry achievement in Grassland in Alberta province (r = 0.522; p= 0.000). Multiple linear regression analysis showed that teaching strategies contributed to 69.9% of variation on the performance, hence plays a vital role in teaching strategies in Canadian high schools. Additionally, it was further inferred that teaching strategies increases positive attitudes toward Geometry achievement.

Technical-Economical Comparison of Irrigation Method Replacement on the Irrigation Systems Subject to Rehabilitation

Tue, 12 Mar 2024 00:00:00 +0000

In contemporary conditions the existing Program for Rehabilitation of Irrigation Systems is widely spread in Georgia. In the project tasks, as a rule, notwithstanding the natural-climatic conditions and without justification of the necessity, there is requested reviewing of possibility to replace the gravity irrigation by drip irrigation. The article is dedicated to the appropriateness of such replacement in the course of rehabilitation of irrigation systems. To identify economic efficiency of such requirement, there has been reviewed one of the distributors of the general irrigation system, where the gravity irrigation is to be replaced by drip irrigation. For the both methods there are determined capital and operating costs and there are calculated the values of Pure Net Variation. It has been found that such replacement during the rehabilitation conditions is economically unjustified and is appropriate only when water shortage in a feeding source.

Implementation and Evaluation of Augmented Reality Technology in Chemistry for Secondary Education in Bangladesh: A Case Study

Sun, 03 Mar 2024 00:00:00 +0000

There is a dearth of study on the effects and consequences of augmented reality in the field of education, and research on augmented reality (AR) technologies is still in its early stages. A user can check virtual objects superimposed on live video of this display reality via visual following or plan rendering in mobile augmented reality. While there have been a number of studies on AR, the ways in which these studies define AR and the circumstances in which they apply AR differ significantly. The textbooks in our country are not well organized and brings monotony while studying the chapters. Augmented Reality technology can solve this problem. We have seen in various articles that this technology is being used successfully. The study has been conducted to establish an effective system for making the education process easier. The purpose is to ensure that students can learn chemistry by not only memorizing but by understanding the concepts for which Augmented Reality has been used. Augmented Reality will help to get 3D vision of the concepts of chemistry. From the system established, students will be able to learn the difficult concepts easily and can enhance their knowledge which will help to build a better understanding of the concepts of chemistry.

The Influence of Kindergarten Teachers’ Knowledge and Instructional Activities on Academic Related Skills of Children in the Talensi District

Sun, 21 Jan 2024 00:00:00 +0000

This study aimed to investigate the impact of teachers' knowledge and instructional activities on the learning abilities of kindergarten children in selected schools in the Talensi District of Ghana. A descriptive survey research design was employed, involving 98 selected teachers, with 76 of them participating in the study. Data was collected using a structured questionnaire and classroom observations. The collected data were analyzed using various descriptive and inferential statistics with the assistance of the SPSS program. The analysis revealed that kindergarten (KG) teachers possessed knowledge in areas such as the organization of the learning environment, child development, curriculum design for children, multiple forms of assessment, family and parent outreach, methods of teaching diverse children, and strategic use of resources and information and communication technology (ICT). Additionally, instructional activities employed by teachers included general exercises, logic, mathematics, and numeracy skills, reading, and writing activities, socio-emotional developmental activities, and creative art activities. Further analysis indicated a strong positive relationship between teachers' knowledge and academic-related skills. Similarly, a significant strong relationship was found between various instructional activities and academic-related skills.

This suggests that both teachers' knowledge and instructional activities play a crucial role in influencing the academic skills development of KG children.

The study recommends that the government should establish National Early Childhood Teachers' Training Centers in all regions to address the specific skills needs of teachers. Standardization of the KG curriculum is also advised to ensure consistency in educational content across all schools. Additionally, in-service training and provision of learning materials for KG teachers are recommended to support their work on a regular basis.

Biomass and Carbon of Trees and Shrubs in the Commune of Mbunya in the City of Bunia, Ituri Province, DRC

Tue, 12 Mar 2024 00:00:00 +0000

The aim of this study of trees in the MBUNYA commune is to assess the diversity of trees and their role in improving the urban environment. The itinerant survey method was used to identify trees along 19 avenues. During the survey, the DBH and height of trees with DBH ? 10 cm were recorded. We then assessed the biomass of the individuals using generic allometric equations for urban trees. The analyses revealed 1,689 individuals, divided into 36 species and 21 families. The average above-ground biomass for the neighbourhoods studied was 1366.14±710.106 (CV: 51.98%), corresponding to an average of 683.075 ± 355.053 kg of sequestered carbon. The total above-ground biomass of the areas surveyed amounts to 5464.6 kg of dry matter, which corresponds to a sequestered carbon stock of 2732.3 kg, with a CO2 equivalent of 10119.63 kg. The values of these parameters vary from one neighbourhood to another and from one avenue to another.

Development of Android-Based Augmented Reality for Promotion of Jepara Tourist Attractions

Muhammad Faiz Al Izza, Irma Handayani, S.Kom, M.Cs — Sun, 08 Jan 2023 00:00:00 +0000

Jepara Regency is an area rich in tourist attractions. By introducing tourist attractions to tourists who want to visit them, tourists will become more familiar with them and have the desire to visit them. Augmented reality is the technology of imaging virtual objects into the real world through a camera connected to a computer. The aim of this research is to implement augmented reality technology to increase the attractiveness of Jepara tourist attractions. Data was obtained through observation, interviews and documentation of tourists and the general public. By utilizing marker-based AR, promotion of Jepara tourist attractions can be clearly visualized and become effective introduction and information. This application can offer information on tourist attractions, accommodation and typical Jepara culinary delights. It is hoped that the development of promotional applications for Jepara tourist attractions can increase the attraction of tourists to visit Jepara and provide interesting experiences to visitors and have a positive impact on the regional economy and surrounding communities.

Operations Strategy and Operational Competencies in Organizational Performance: A Rapid Review

Lydia Mwendwa Kalunda — Fri, 22 Mar 2024 00:00:00 +0000

Increased competition in the business space calls for operations practitioners to make decisions continuously and implement necessary changes to gain and sustain competitive advantage. This rapid review sought to unravel linkages between operations strategy, operational competencies and organizational performance. Based on the core competency theory of strategy, the resource-based view and the open systems theory, it was hypothesized that operations strategy and operational competencies interrelate, and both predict organizational performance. Organizational performance was conceptualized by performance measures of return on investment (RoI), customer satisfaction and inventory turnover. The review established that more research has been done around operations functions in manufacturing compared to the service sector. It was further established that organizational performance highly rests on the existence of capabilities and services of each specific organization and hence, operational competencies mediate the relationship between operations strategy and organizational performance. Additionally, the achievement of a firm’s operations tactics depends highly on its ability to achieve the priorities of cost, quality, speed, flexibility and dependability. Recommendations in line with objectives were presented.

Cracked Tooth Syndrome Review

Mohammed Hamoudi Alsunboli, Salah M. Ibrahim — Thu, 28 Mar 2024 00:00:00 +0000

Review Objective: The treatment of fractured tooth syndrome (CTS) is extremely challenging, primarily because it requires precise pre-restorative diagnosis and decision-making. This paper examines treatment methods for teeth affected by CTS and proposes a pertinent clinical decision tree.

Recent advancements have revealed that CTS is characterized by the occurrence of incomplete fractures in the original crowns of teeth.

The choice of preparation method and direct or indirect restorative procedures significantly impacts the long-term outlook for the tooth. Nevertheless, the complex causes, intricate diagnosis, and subjective choices regarding preparation provide difficulties in therapeutic care. Therefore, an informed decision tree's guidance becomes crucial. This decision tree should give primary importance to the logical preservation of tooth structure, the optimization of preparatory processes, and the careful assessment of restorative implications and choices. The diagnosis and choices made before restoring the tooth have a significant impact on the complex process of caring for cracked tooth syndrome (CTS). This review examines treatment techniques for teeth impacted by CTS and presents a relevant clinical decision tree.

Conclusion: Tackling the reparative needs of CTS requires a methodical approach. Implementing an informative and universally applicable decision tree can greatly improve daily clinical practice.

Effectiveness of Public Participation Structures on Early Childhood Development Education Policy Implementation in Bomet County, Kenya

Edward Sigilai, Dr. Ungaya Cotty Godfrey, Dr. Pia Okeche — Fri, 15 Mar 2024 00:00:00 +0000

Public Participation structures play a critical role in Early Childhood Development Education Policy Implementation. Despite the importance of structures as domiciled in the law, public participation structures are yet to be fully actualized in the various levels of the government and specifically in ECD at county level. The purpose of this study sought to examine effectiveness of public participation structures on ECDE policy implementation in Bomet County, Kenya. The study is anchored by principal-agent theory and new public management theory. The study used mixed research design to explain interaction of study variables. The study targeted 1356 ECD teachers, 678 head teachers, 2034 Executive PTA and BOM and 12 County Education Officers who have been participating and managing past participation sessions. A sample size of 364 respondents was used. Data collection instruments included questionnaires and interviews. Data was analyzed using descriptive statistics which were presented in form of tables, frequencies, pie charts and narrations. Findings of the study indicate that ECDE public participation stakeholders are not fully represented in decision making and not involved in participation functions. Representative including special interest groups do not articulate issues affecting ECDE public policy implementation; representative views are not accepted and are not included in ECDE policy development and implementation. Public participation structures contributions are not reflected in final ECDE policy implementation plans. ECDE policy sessions need to be done in a conducive and secure place; participants of public participation need to be provided with facilitation for ECDE development policy implementation. Representative including special interest groups need to be given opportunity to articulate issues affecting ECDE development policy implementation and their views included in ECDE policy development and implementation. The study findings will be useful to the county government, ministry of education, policy makers and others stakeholders involved in ECD as it helps in getting better information on policy implementation when making decisions.

The Impact of Histotripsy Technique in Tumor Ablation - a Systematic Review

Areej D. Alghamdi, Abdullah Sahrah — Sun, 03 Mar 2024 00:00:00 +0000

According to a study conducted in the U.S., cancer affects more than 700,000 individuals worldwide each year, with 35,660 new cases diagnosed in the U.S. in 2015 alone. However, there are only a few standard treatment choices, which include radiation, chemotherapy, and surgery. This systematic review report on the impact of histotripsy in tumor ablation. In this paper, the effectiveness, safety and advantages of histotripsy compared to other methods are explored. A search was done on ScienceDirect, PubMed, Google Scholar, and Scopus databases for articles published from the date of inception of the databases to 21st March 2023. Reference lists of identified studies were also screened. Non-duplicate articles were identified, and 12 articles were included for thematic analysis. During the analysis, different effects of histotripsy were categorized. This categorization led to the realization of the effectiveness, immunological effects, safety and advantages of histotripsy compared to the therapeutic options. Histotripsy is effective and safe treatment for various types of cancer, including cholangiocarcinoma, pancreatic cancer, breast cancer, colorectal cancer, osteosarcoma, and hepatocellular carcinoma (HCC).

Potential and Opportunities for the Development of Religious Tourism in Western Crete, Greece

John Vourdoubas, Antonios Kalogerakis, Konstantinos Zormpas — Tue, 12 Mar 2024 00:00:00 +0000

The tourism industry is a flourishing global industry with an increasing number of people travelling each year all over the world. Religion used to be since ancient times a motivation for people to travel, visit and pray in holy places and sites. Religion tourism is also growing nowadays while many people visit holy and sacred places for pilgrimage or for seeing religious monuments which are important for their faith. The island of Crete is a famous tourism destination in eastern Mediterranean basin with mild climate, plenty of sunshine, sandy beaches and many natural attractions visited by more than five million of tourists every year. Crete has also many religious, cultural and historical monuments established during the past twenty centuries from different civilizations which are attractive to visitors. The possibility of developing religious tourism in western Crete has been investigated and its impacts on the local stakeholders have been identified. The existing infrastructure in the island favors the development of religious tourism while the local policies support it. The Orthodox Christianity recognizes the links between religion, society and ecology and the development of religious tourism should be combined with ecological sensitization and/or social activities. The implemented SWOT and PESTEL analyses indicated that the potential for the development of religious tourism in western Crete is high resulting to many socio-economic benefits to local stakeholders. The tourism product of the island, which is currently focused on the “sea and sun tourism”, will be differentiated and enriched with the development of cultural tourism. Our results could be useful to policy makers and to local stakeholders who wish to promote the religious tourism with simultaneous promotion of environmental sustainability in the island.