Abrasion is a major problem in hydraulic structures as they are continuously exposed to various types of water. Henceforth, these structures are susceptible to damage and require heavy maintenance. There is a significant demand in finding new techniques for improving the resistance towards the erosion of the concrete used in the construction of hydraulic structures. This work put forth a comparative analysis of the performance of two different types of concretes towards resistance namely, high-performance fiber reinforced concrete (HPFRC) [steel fibers (30 mm and 50 mm) and polypropylene fibers (19 mm)] and high-performance concrete (HPC). A comparative study was carried out based on their resistance towards wearing and hydro-abrasion erosion. The analyses were conducted using the WMP ECLIPSE method and ASTM C 1138 method. The results indicated that the rate of abrasion could be diminished by 18% based on the types of cement, fibers, concrete and modifications like the addition of silica fume.
由于水工建筑物持续暴露在各种类型的水中，磨损是水工建筑物面临的主要问题。因此，这些结构很容易损坏，需要大量维护。在寻找新技术来提高水工建筑物中混凝土的抗侵蚀能力方面，有很大的需求。这项工作提出了两种不同类型的混凝土在阻力方面的性能对比分析，即高性能纤维增强混凝土(HPFRC)[钢纤维(30毫米和50毫米)和聚丙烯纤维(19毫米)]和高性能混凝土(HPC)。对其耐磨性和水磨侵蚀性能进行了对比研究。采用WMP ECLIPSE方法和ASTM C 1138方法进行分析。结果表明，根据水泥、纤维、混凝土的种类和添加硅粉等改性剂，磨损率可降低18%。
{"title":"Analysis of Abrasion Depth and Rates in Concrete","authors":"M. Alansari","doi":"10.5539/mas.v15n6p1","DOIUrl":"https://doi.org/10.5539/mas.v15n6p1","url":null,"abstract":"Abrasion is a major problem in hydraulic structures as they are continuously exposed to various types of water. Henceforth, these structures are susceptible to damage and require heavy maintenance. There is a significant demand in finding new techniques for improving the resistance towards the erosion of the concrete used in the construction of hydraulic structures. This work put forth a comparative analysis of the performance of two different types of concretes towards resistance namely, high-performance fiber reinforced concrete (HPFRC) [steel fibers (30 mm and 50 mm) and polypropylene fibers (19 mm)] and high-performance concrete (HPC). A comparative study was carried out based on their resistance towards wearing and hydro-abrasion erosion. The analyses were conducted using the WMP ECLIPSE method and ASTM C 1138 method. The results indicated that the rate of abrasion could be diminished by 18% based on the types of cement, fibers, concrete and modifications like the addition of silica fume.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81755678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aimed to reveal the level of emotional intelligence and its dimensions: self-awareness, emotional management, empathy, and social skills, as well as revealing the significant differences in the degrees of emotional intelligence and its dimensions that are attributed to experience, educational level, and social status among kindergarten administrators in Amman. A scale of emotional intelligence was prepared to ensure validity and reliability to achieve the objectives of the study, and it was applied to a sample of (136) female managers. After using the arithmetic averages, the one-way analysis of variance, and the (T) test, the results are as follows: - The level of emotional intelligence of the female managers was high. - Significant differences were found in the overall degree of emotional intelligence and its dimensions attributable to more experienced managers' experience. - There were no significant differences in the overall degree of emotional intelligence and its dimensions due to the educational level. - There were no significant differences in the overall degree of emotional intelligence and its dimensions due to social status.
{"title":"Emotional Intelligence of Kindergarten Principals in Amman","authors":"Abdulrahman Al-Yamani","doi":"10.5539/MAS.V15N1P78","DOIUrl":"https://doi.org/10.5539/MAS.V15N1P78","url":null,"abstract":"This study aimed to reveal the level of emotional intelligence and its dimensions: self-awareness, emotional management, empathy, and social skills, as well as revealing the significant differences in the degrees of emotional intelligence and its dimensions that are attributed to experience, educational level, and social status among kindergarten administrators in Amman. A scale of emotional intelligence was prepared to ensure validity and reliability to achieve the objectives of the study, and it was applied to a sample of (136) female managers. After using the arithmetic averages, the one-way analysis of variance, and the (T) test, the results are as follows:\u0000- The level of emotional intelligence of the female managers was high.\u0000- Significant differences were found in the overall degree of emotional intelligence and its dimensions attributable to more experienced managers' experience.\u0000- There were no significant differences in the overall degree of emotional intelligence and its dimensions due to the educational level.\u0000- There were no significant differences in the overall degree of emotional intelligence and its dimensions due to social status.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78401757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Many researchers have been interested in studying the effect of adding local natural materials or construction waste on the properties of poor subgrade soil. However, changes in size and strength of expansive soils can cause extensive damage to the geotechnical infrastructure. This damage is often repeatable and latent in the long term, and is a critical issue in highway subgrade engineering. This paper examines the effect of adding both Fine Silica Sand (FSS) and Granite Cutting Powder Waste (GPW) materials on the welling characteristics of expansive soils. Atterberg limits, free swell index, and rate of swell of the mixtures were used as a key to assess properties of a group of expansive soil samples after adding different percentages of the mentioned materials. The rates of additions were 10%, 20%, 30%, 40%, 50%, 60 and 70% of the weight of the soil samples. The test results showed that FSS and GPW significantly affect the expansive soil properties. However, adding 70% of both FSS and GPW reduced the swelling index from 58.3% to 6.6% and from 58.3% to 11% after 7 days of curing, respectively. This study suggests that the Fine Silica Sand and Granite Powder Waste can be used as stabilizers for expansive highly plastic soils.
{"title":"Using Fine Silica Sand and Granite Powder Waste to Control Free Swelling Behavior of High Expansive Soil","authors":"M. O. Suliman, A. J. Alkherret","doi":"10.5539/mas.v15n1p53","DOIUrl":"https://doi.org/10.5539/mas.v15n1p53","url":null,"abstract":"Many researchers have been interested in studying the effect of adding local natural materials or construction waste on the properties of poor subgrade soil. However, changes in size and strength of expansive soils can cause extensive damage to the geotechnical infrastructure. This damage is often repeatable and latent in the long term, and is a critical issue in highway subgrade engineering. This paper examines the effect of adding both Fine Silica Sand (FSS) and Granite Cutting Powder Waste (GPW) materials on the welling characteristics of expansive soils. Atterberg limits, free swell index, and rate of swell of the mixtures were used as a key to assess properties of a group of expansive soil samples after adding different percentages of the mentioned materials. The rates of additions were 10%, 20%, 30%, 40%, 50%, 60 and 70% of the weight of the soil samples. The test results showed that FSS and GPW significantly affect the expansive soil properties. However, adding 70% of both FSS and GPW reduced the swelling index from 58.3% to 6.6% and from 58.3% to 11% after 7 days of curing, respectively. This study suggests that the Fine Silica Sand and Granite Powder Waste can be used as stabilizers for expansive highly plastic soils.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73392003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Women mostly involve in raring and caring natural resources in their daily life. This paper intends to explore the practices and perspectives of Nepali women on ecology conservation in relation to ecological, socio-cultural and religious perspectives. For environmental degradation, women's resource management plays a vital role in ecology conservation. As a qualitative research approach, field observation, focus group discussion, and in-depth interviews with women in the community were the methods of collecting necessary information. Nepali women involve in the collection and management of plant resources inappropriately. Therefore, their perspective and practice can play an important role to minimize the rapid degradation of the environment regarding with management of plant resources. The theoretical literature review consists of movements on environment conservation in the world and in Nepal. No doubt, the message of their contribution will be the lesson to the world for the protection of environment as well as to support and meet the slogan of “local act global think” to save the nature.
{"title":"Assessing Ethno-Ecology of Women in Nepal: Practices and Perspectives","authors":"Gem Prasad Gurung, K. Koirala","doi":"10.5539/mas.v15n1p46","DOIUrl":"https://doi.org/10.5539/mas.v15n1p46","url":null,"abstract":"Women mostly involve in raring and caring natural resources in their daily life. This paper intends to explore the practices and perspectives of Nepali women on ecology conservation in relation to ecological, socio-cultural and religious perspectives. For environmental degradation, women's resource management plays a vital role in ecology conservation. As a qualitative research approach, field observation, focus group discussion, and in-depth interviews with women in the community were the methods of collecting necessary information. Nepali women involve in the collection and management of plant resources inappropriately. Therefore, their perspective and practice can play an important role to minimize the rapid degradation of the environment regarding with management of plant resources. The theoretical literature review consists of movements on environment conservation in the world and in Nepal. No doubt, the message of their contribution will be the lesson to the world for the protection of environment as well as to support and meet the slogan of “local act global think” to save the nature.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87291228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gastón Sanglier, Eduardo J. Lopez, Sonia Cesteros, Roberto A. Gonzalez
Non-Destructive Testing (NDT) methods, and especially, ultrasounds have gone from being a mere laboratory curiosity to an indispensable tool in the industry as a primary means of determining the level of quality achieved in its products (ASM, 1989; Barbero, 1999). This study will identify and apply the main physical phenomena of interaction of an ultrasonic wave in a composite material, to see if through this type of waves, you can detect defects of the type of porosity or delaminations in these materials. The percentages of reflected and transmitted waves in real cases of defects in the composite material will also be studied. It will be shown if the frequencies and intensities of the waves are adequate to find this type of defects or imperfections in the material. The theoretical study of the ultrasonic wave seeks to help researchers in the development of equipment that uses the methodology of immersion ultrasound for the inspection of materials in the search for 'defects' and to understand the physics of the test.
{"title":"Identification of 'Defects' in Epoxy Matrix Composites and Carbon Fiber by Ultrasound. Interaction of the Ultrasonic Beam with the Material","authors":"Gastón Sanglier, Eduardo J. Lopez, Sonia Cesteros, Roberto A. Gonzalez","doi":"10.5539/mas.v15n1p32","DOIUrl":"https://doi.org/10.5539/mas.v15n1p32","url":null,"abstract":"Non-Destructive Testing (NDT) methods, and especially, ultrasounds have gone from being a mere laboratory curiosity to an indispensable tool in the industry as a primary means of determining the level of quality achieved in its products (ASM, 1989; Barbero, 1999). \u0000This study will identify and apply the main physical phenomena of interaction of an ultrasonic wave in a composite material, to see if through this type of waves, you can detect defects of the type of porosity or delaminations in these materials. The percentages of reflected and transmitted waves in real cases of defects in the composite material will also be studied. It will be shown if the frequencies and intensities of the waves are adequate to find this type of defects or imperfections in the material. \u0000The theoretical study of the ultrasonic wave seeks to help researchers in the development of equipment that uses the methodology of immersion ultrasound for the inspection of materials in the search for 'defects' and to understand the physics of the test.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84307886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tariq Hantash, M. Nauta, Mohammad N S Al-Sabi, Walid Q. Al-ali, H. Vigre
As a part of evaluation the surveillance system of Salmonella in frozen imported poultry meat into Jordan, we conducted a study to estimate the limit of detection (LOD50% and LOD95%) of S. Typhimurium and S. Enteritidis based on chromogenic media of Rapid’Salmonella method. Salmonella-free chicken meat samples was inoculated with 1 to 100 CFU of 11 wild strains that originated from frozen imported poultry meat and 2 reference strains. In the experiment, the observed lowest concentration for Salmonella Typhimurium and Salmonella Enteritidis using Rapid’Salmonella method were from 1 to 50 CFU/25 g. Based on these results, probability of detection (POD) curve was estimated according to the model described in EN ISO 16140-4. From the estimated POD functions, the LOD50% and LOD95% was determined for the Rapid’Salmonella method. The LOD50% of the different strains varied from 0.9 to 21.2 CFU/25 g. The two reference strains and 9 wild strains had a LOD50% less than 2 CFU/25 g, one wild strain of Salmonella Enteritidis had a LOD50% of 6.8 CFU/25 g and another one had a LOD50% of 21.2 CFU/25 g. The majority of Salmonella strains has a LOD50% of 1-4 CFU/25 g in poultry meat, but also that there are some Salmonella strains which will first be detected at 10 CFU/25 g and higher.
{"title":"The “Rapid’Salmonella” Method: Estimation of the Limit of Detection for Salmonella Strains Typhimurium and Enteritidis Isolated from Frozen Poultry Meat","authors":"Tariq Hantash, M. Nauta, Mohammad N S Al-Sabi, Walid Q. Al-ali, H. Vigre","doi":"10.5539/mas.v14n12p43","DOIUrl":"https://doi.org/10.5539/mas.v14n12p43","url":null,"abstract":"As a part of evaluation the surveillance system of Salmonella in frozen imported poultry meat into Jordan, we conducted a study to estimate the limit of detection (LOD50% and LOD95%) of S. Typhimurium and S. Enteritidis based on chromogenic media of Rapid’Salmonella method. Salmonella-free chicken meat samples was inoculated with 1 to 100 CFU of 11 wild strains that originated from frozen imported poultry meat and 2 reference strains. In the experiment, the observed lowest concentration for Salmonella Typhimurium and Salmonella Enteritidis using Rapid’Salmonella method were from 1 to 50 CFU/25 g. Based on these results, probability of detection (POD) curve was estimated according to the model described in EN ISO 16140-4. From the estimated POD functions, the LOD50% and LOD95% was determined for the Rapid’Salmonella method. The LOD50% of the different strains varied from 0.9 to 21.2 CFU/25 g. The two reference strains and 9 wild strains had a LOD50% less than 2 CFU/25 g, one wild strain of Salmonella Enteritidis had a LOD50% of 6.8 CFU/25 g and another one had a LOD50% of 21.2 CFU/25 g. The majority of Salmonella strains has a LOD50% of 1-4 CFU/25 g in poultry meat, but also that there are some Salmonella strains which will first be detected at 10 CFU/25 g and higher.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75088400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ethar Khalaf Ibrahim Alhumeisat, Samer Abdulmajid Hazeem ALBashabsheh
The current study aimed to identify the impact of transformational leadership on crisis management in the Cellular Communications sector in Jordan. This study relies on the descriptive and analytical approach for this study. The study population includes administrators working in Zain, Orange, and Umniah companies. A Convenience non-probability sample of 100 managers was taken to distribute the study questionnaire to them. Moreover, the study reached the following results: There is a statistically significant impact at (α ≤ 0.05) for transformational leadership with its dimensions (ideal effect, inspirational stimulation, intellectual stimulation, individual considerations) on crisis management in Jordan cellular communications sector. In light of the previous results, the researcher recommends the following: The necessity for the administration to use the information network security system to retrieve information before the crisis occurs. Senior management's necessity to benefit from its previous experiences to generate knowledge benefits the organization's employees—the need to create an organizational culture that promotes the useful application of transformational leadership.
{"title":"The Impact of Transformational Leadership on Crisis Management in the Cellular Communications Sector in Jordan","authors":"Ethar Khalaf Ibrahim Alhumeisat, Samer Abdulmajid Hazeem ALBashabsheh","doi":"10.5539/mas.v14n12p27","DOIUrl":"https://doi.org/10.5539/mas.v14n12p27","url":null,"abstract":"The current study aimed to identify the impact of transformational leadership on crisis management in the Cellular Communications sector in Jordan. This study relies on the descriptive and analytical approach for this study.\u0000The study population includes administrators working in Zain, Orange, and Umniah companies. A Convenience non-probability sample of 100 managers was taken to distribute the study questionnaire to them.\u0000Moreover, the study reached the following results: There is a statistically significant impact at (α ≤ 0.05) for transformational leadership with its dimensions (ideal effect, inspirational stimulation, intellectual stimulation, individual considerations) on crisis management in Jordan cellular communications sector.\u0000In light of the previous results, the researcher recommends the following: The necessity for the administration to use the information network security system to retrieve information before the crisis occurs. Senior management's necessity to benefit from its previous experiences to generate knowledge benefits the organization's employees—the need to create an organizational culture that promotes the useful application of transformational leadership.","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84623908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The research aims to study “education democracy " in terms of democratic practices in the educational process, developing a spirit of criticism, plurality of opinions, tolerance towards the opinions of others, respecting the decision of the majority and taking responsibility for the decision. In addition to the relationship between democracy and education, the relationship between democracy and education as a practice, and clarifying the goals of education for democracy, and clarifying areas of democratic awareness, the implications of education for democracy and procedures for developing democratic practices in education and the detection of obstacles to democratic practices in the educational process, and that is in the context of an applied analytical and scientific study based on the researcher's visit to Palestinian educational institutions and his knowledge of their reality, through which the researcher seeks to present what is hoped from the "education democracy" and how should it be applied to reality and what goals should these institutions seek to achieve?
{"title":"Democracy in Education between Reality and Aspirations: Palestine as a Model","authors":"Mohammad Shuibat","doi":"10.5539/mas.v14n11p1","DOIUrl":"https://doi.org/10.5539/mas.v14n11p1","url":null,"abstract":"The research aims to study “education democracy \" in terms of democratic practices in the educational process, developing a spirit of criticism, plurality of opinions, tolerance towards the opinions of others, respecting the decision of the majority and taking responsibility for the decision. In addition to the relationship between democracy and education, the relationship between democracy and education as a practice, and clarifying the goals of education for democracy, and clarifying areas of democratic awareness, the implications of education for democracy and procedures for developing democratic practices in education and the detection of obstacles to democratic practices in the educational process, and that is in the context of an applied analytical and scientific study based on the researcher's visit to Palestinian educational institutions and his knowledge of their reality, through which the researcher seeks to present what is hoped from the \"education democracy\" and how should it be applied to reality and what goals should these institutions seek to achieve?","PeriodicalId":18713,"journal":{"name":"Modern Applied Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88027200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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