57 research outputs found
Fatigue failure analysis of cfrp composite laminates using modified stiffness degradation method
No full textCarbon fibre reinforced polymer (CFRP) composite laminates have been extensively utilised in various industrial applications due to their outstanding mechanical properties. In this study, the stiffness degradation behaviour of CFRP laminates subjected to cyclic loading conditions was analysed using two analytical models: the Modified Stage I model and the modified Stage I to Stage III model. Both models were developed based on the original model proposed by Lurie and Minhat, and subsequently enhanced through the introduction of several specific parameters to improve the predictive accuracy between analytical results and experimental data. The application of a linear elastic model facilitated the determination of the mechanical properties of the CFRP materials, which served as input parameters for the modified models. The modified Stage I model was employed to evaluate stiffness degradation during the initial damage phase, particularly matrix cracking. The resulting analytical stiffness degradation curves were compared with the experimental curves. Subsequently, the modified Stage I to Stage III model was applied to assess the full spectrum of stiffness degradation, encompassing damage evolution from the initial stage to the final stage, including fibre breakage. To evaluate the accuracy of both models, the percentage difference between the analytical model and experimental data was calculated for all three CFRP laminate configurations investigated in this study, namely [0,±45]s, [0,902]s, and [0,90,±45]s. Overall, the findings indicate that the Modified Stage I model offers the highest predictive accuracy when directly compared with experimental data, particularly for early-stage damage. The simplicity of its formulation and its strong agreement with empirical results render it highly effective and reliable for predicting fatigue-induced damage in the initial service life of the structure. However, to provide a more comprehensive representation of the material’s stiffness degradation behaviour throughout its service life, the modified Stage I to Stage III model presents a balanced compromise between predictive accuracy and the ability to capture the complete damage progression. Therefore, the selection of the most appropriate model should be guided by the intended application. For short-term assessments or early-stage damage monitoring, the Stage I model is the most suitable. Conversely, for long-term durability predictions involving comprehensive structural integrity evaluation, the Stage I to Stage III model is more appropriate, as it demonstrates a high level of accuracy and inclusiveness that closely aligns with experimental observations
Parental knowledge about dual language development and children's dual language learning experiences at home
No full textPresented at the annual Celebration of Undergraduate Research and Creative Activity while the author was an undergraduate student at Rutgers University-Camden
Analisis Pemerapan Akuntansi Pada Usaha Miso Du Pekanbaru
No full textANALYSIS OF ACCOUNTING APPLICATION IN MISO BUSINESS IN PEKANBARU ABSTRACT By NABILAH ULFAH KARTIKA SARI 145310512 This research the author did in Pekanbaru. The object of this research is Miso's business. The problems discussed in this study are how the suitability of the application of accounting in Miso businesses in Pekanbaru with the basic concepts of accounting. The purpose of this study is to find out the application of accounting carried out by Miso entrepreneurs has fulfilled the basic accounting concepts in running their business. The basic accounting concepts used are: The Concept of Business Unity, the Concept of Sustainability, the Concept of the Basics of Recording, the Objective Concept, the Concept of Time Period, and the Comparative Concept. Data collection methods that the author needs for this writing material are: structured interviews, documentation, observation, and questionnaire questionnaire. While the data analysis used is descriptive method. It was concluded that the application of accounting carried out by miso businesses in Pekanbaru was not yet in accordance with the concepts of accounting bases
MOTIVASI ORANG TUA MEMILIH PONDOK PESANTREN SEBAGAI SARANA PEMBINAAN MORAL (STUDI KASUS DI PESANTREN PUTRI TAHFIDZUL QUR'AN AINUL MARDHIYYAH JETIS PONOROGO)
No full textABSTRACT
Nabilah, Ananda, 2022. Parents' Motivation to Choose Islamic Boarding Schools as a Means of Moral Development Case Study at Tahfidzul Qur'an Islamic Boarding School Ainul Mardhiyyah Ponorogo. S1 Program Thesis of Islamic Religious Education Department. Supervisor (I) Katni, M.Pd.I and supervisor (II) Nurul Abidin, M.Ed
Keywords: Motivation, Parents, Moral
In the life of children, it is very necessary and important to have moral development. Where parents are a part and have the duty and responsibility to guide children so that children adhere to moral and religious values as a way of life. However, some parents are unable to do so for a number of reasons, including lack of knowledge. This makes parents motivated to choose Islamic boarding schools as a means of moral development. Thus, the author wants to know the motivation of parents to choose Islamic boarding schools as a means of moral development for the case study at the Tahfidzul Qur'an Islamic Boarding School Ainul Mardhiyyah Jetis Ponorogo.
The aims of this study were (1) to find out the motivation of parents to choose the Putri Tahfidzul Qur'an Ainul Mardhiyyah Islamic boarding school in fostering the morale of students. (2) To find out the role of the Putri Tahfidzul Qur'an Ainul Mardhiyyah Islamic boarding school in fostering the morale of students. (3) To find out the supporting and inhibiting factors of the role of the Putri Tahfidzul Qur'an Islamic boarding school Ainul Mardhiyyah in fostering the morale of students.
This study uses qualitative methods, namely the data obtained in the form of opinions, views or other expressions of thoughts obtained through interviews. While the method used is through observation (observation), interviews, and documentation. While the subjects in this study include: parents, boarding school administrators, and students. The object of informants is made because researchers assess those who are competent in providing information or data that are closely related to the problem under study.
The results of the research that the author did can be drawn from the following conclusions: (1) The motivation of parents to choose Islamic boarding schools as a means of moral development, so that children have good manners, children are protected from the influence of the outside world which could have a negative impact, so that children become a pious child, and hope that parents have a good grip on life for their lives. (2) The role of the Tahfidzul Qur'an Ainul Mardhiyyah Islamic Boarding School in fostering the morals of students, namely the methods used include the exemplary method (uswah), the memorization method, the tasmi method. (3) Supporting factors in fostering students' morale are boarding school administrators and educators who play an active role in Islamic boarding schools and are ready to contribute to Islamic boarding schools, students remind each other, trust from santri guardians, support from ustad and ustadzah.
While the inhibiting factor is the character or nature of students who are different
An experimental study on stabilization of Pekan clay using polyethylene and polypropylene
No full textMany countries are expressing concern over the growing issues of polyethylene terephthalate (PET) bottles and polypropylene (PP) products made by the household sector. The rapid increase in the generation of plastic waste all around the world is due to the economic development and population growth. PP is the world's second-most widely produced synthetic plastic, after polyethylene. Statistics show that nearly 50% of the municipal solid waste in Malaysia comes from the institutional, industrial, residential, and construction waste. This paper presents the results of an investigation on the utilisation of fibres as products of PET bottles and PP products in order to improve the engineering properties of clay soil in Pekan. The soil samples were taken from Kampung Tanjung Medang, Pekan, Pahang. The basic properties of the clay soil were determined as follows; optimum moisture content: 32.5%, maximum dry density: 13.43 kN/m3, specific gravity: 2.51, liquid limit: 74.67%, plastic limit: 45.98%, and plasticity index: 28.69%. This investigation concentrates on the shear strength of the reinforced clay soils with PET and PP in random orientation. The reinforced soil samples were subjected to unconfined compression test (UCT) to differentiate their shear strength with that of the unreinforced soil. The tests found that the waste fibres (PET and PP) improved the strength properties of the Pekan clayey soils. The unconfined compressive strength (UCS) value increased with the increasing percentage of PET fibre and reached the optimum content at 10% reinforcement, where it showed the highest improvement of 365 kN/m2 from 325 kN/m2 and depleted when the optimum content reached 20% reinforcement. For PP fibre, the reinforced soil showed the highest UCS at 20% reinforcement with the improvement of 367 kN/m2. The study concluded that the PET and PP fibres can be utilised successfully as reinforcement materials for the stabilisation of clayey soils. The use of these waste compounds as alternative materials for clay soil stabilisation is reasonable and cost effective since they are constantly available
LITERATURE REVIEW: PREJUDICE TERHADAP K-POPERS DI INDONESIA
No full textIn Indonesia, the growth rate of kpop is very rapid, notinfrequently boy band and girl band fans often have negativeassumptions from society. Where it tends to be viewednegatively and stereotyped as a fanatic, obsessive, hysterical,crazy, and consumptive figure. Based on previous research, noone has explained the background of the phenomenon ofpeople's views on kpopers specifically. Therefore, thisresearcher aims to find out how prejudice against kpopers inIndonesian society can arise and find out how to reduce theprejudice. The research method used is the literature studymethod. Literature searches are carried out by accessingelectronic databases online from Pubmed, Google Scholar,science direct, and other reading sources. for the selection ofjournals the author tries to classify based on the last 10 years,and the suitability of the information needed. So that the totalliterature that the author uses is 8 scientific literature consistingof books and journals. Based on the results of 8 literatureobtained information about the definition of prejudice, thesource of prejudice and how to reduce prejudice. It can beconcluded that prejudice is part of the affective or emotionalcomponent that forms a negative attitude or form of Intergrouprelations. Prejudice itself is always closely related toStereotypes and also Discrimination. Then in overcoming orreducing prejudice can be done by increasing contact fromother groups, building cooperation and interdependence,shifting stereotypes on groups with an exception, providingmulticultural education
Comparative study on DuPont analysis and DEA models for measuring stock performance using financial ratio
No full textFramework for developing a spatial walkability index (SWI) for the light-rail transit (LRT) stations in Kuala Lumpur city centre using analytical network process (ANP) and GIS
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Tapak liman (Elephantopus scaber L) extract–induced CD4+ and CD8+ differentiation from hematopoietic stem cells and progenitor cell proliferation in mice (Mus musculus L)
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