The suitability between expectations and reality of the quality of education students get during college affects students' perceptions of education quality in a study program. Information on the achievement of the implementation of main courses subjects and the teaching and learning process can be used as a basis for evaluating and mapping the gaps between the curriculum and the teaching and learning process with the required competencies. This study aims to determine students' perceptions of core subjects' learning outcomes in the D3 KS and D3 KG Pograms, Department of Civil Engineering PNJ. The method used in this research is the survey method, with purposive random sampling and descriptive analysis approach. Meanwhile, the performance and gap analysis use the Importance-Performance Analysis (IPA) method. The results denote that the students' perceptions of the learning outcomes of the main courses of the D3 KG and D3 KS Programs, Department of Civil Engineering PNJ showed promising results. The IPA analysis shows that six of the seven D3 KG Study Program main courses are in Quadrant II, and six of the eight D3 KS Program main courses are also in Quadrant II.
Abstrak: Kondisi jalan Kampung Sugutamu yang rusak dan berlubang berpotensi menyebabkan kecelakaan, sehingga perlu dilakukan pengecoran kembali. Penggunaan beton serat dengan bahan tambah limbah potongan kawat dapat meningkatkan kinerja beton, sehingga jalan yang terbuat dari beton tidak mudah retak dan rusak. Tujuan pengabdian yaitu memberikan edukasi serta membantu masyarakat Kampung Sugutamu dalam proses perbaikan jalan . Kegiatan pengabdian masyarakat dilakukan secara gotong-royong dengan masyarakat Kampung Sugutamu RT 002, RW 021 yang berperan sebagai mitra. Peserta kegiatan meliputi masyarakat sekitar, 14 orang Dosen Teknik Sipil PNJ, dan 2 orang Mahasiswa Teknik Sipil PNJ. Evaluasi dilakukan dengan instrumen kuisioner yang dibagikan kepada masyarakat setelah kegiatan pengecoran selesai. Hasil kegiatan berupa perbaikan jalan kurang lebih sepanjang 200 m, dengan lebar 2 meter, dan tebal beton 10 cm. Secara tidak langsung masyarakat yang terlibat pengecoran, memperoleh pengetahuan baru tentang perbaikan jalan sebesar 71,4%. Selain itu kegiatan ini membantu masyarakat menghemat pengeluaran sebesar 25 juta yang meliputi pengadaan material dan sewa tukang.Abstract: The condition of the damaged and potholed Sugutamu Village road has the potential to cause an accident, so it needs to be re-casted. The use of fiber concrete with additional material of wire cut waste can improve the performance of concrete so that roads made of concrete are not easily cracked and damaged. The purpose of the service is to provide education and help the people of Kampung Sugutamu in the process of road repair. Community service activities are carried out in mutual cooperation with the people of Kampung Sugutamu RT 002, RW 021 who act as partners. The participants of the activity include the surrounding community, 14 PNJ Civil Engineering Lecturers, and 2 PNJ Civil Engineering Students. The Evaluation is carried out with a questionnaire instrument which is distributed to the community after the casting activity is completed. The results of the activity are road repairs of approximately 200 m long, 2 meters wide, and 10 cm thick concrete. Indirectly, the people involved in the foundry gained new knowledge about road repair by 71.4%. In addition, this activity helps the community to save 25 million in expenses which include material procurement and construction hire.
Background: Soil has an important role to play in planning buildings because it supports the loads above it. Different types of soil with poor mechanical properties require more attention. Therefore, it is necessary to put in more effort to stabilize soil in order to improve its properties. This study aimed to compare the potential of lime and brick powder as stabilizers based on the values of California bearing ratio (CBR). Soil stabilization can be defined as the process of stabilizing soil properties by chemical or physical means to improve its engineering efficiency. The main objectives of stabilizing soil are to increase the bearing capacity of soil, to increase its resistance to weathering processes, and its permeability. Methods: In this work laboratory tests were done with disturbed and undisturbed soil samples. The proportions of lime or red brick powder additives mixed together are 0%, 5%, 10%, and 15% of the original soil sample. From the results of the laboratory tests, the soil type obtained is MH soil based on the Unified Soil Classification System (USCS). The MH soil type is a low plasticity silt soil. Results: The study’s results showed that with the addition of lime and brick powder, the soil could be stabilized. In both soaked and unsoaked CBR tests, there was an increase in the CBR value for each proportion of the mixed additives. However, red brick powder had a significant increase of 15%. Conclusions: This study found a very large range of variations because of the many material requirements for each test. We suggest other researchers perform the CBR test by reducing the range of variations in the additives to get firm data and using our experimental procedure in this study for further research.
A research to determine the solar activity in the months from January to March 2015, and analyze the characteristics of flare on the rotation angle shifting of the sunspot group of sunspot sample observed, has been conducted. The method was observation and descriptive analysis of quantitative data. Determination of coordinates of sunspot was done using the software IDL. These observations were made in the Aerospace Observation Center (BPD) LAPAN Watukosek. Data were analyzed in the form of a sketch-owned BPD Sunspot LAPAN Watukosek, ie sunspot sketch of months from January to March in 2015 and the data was taken from NOAA. The results showed that the flare is not always the case in large class of sunspot groups, however, the small class was able to produce a flare. Most flares ware occur after experiencing a shift angle in the preceding or following although with angles that were not too large (<10°). The highest solar activity was occurred in January 2015 with the appearance of a sunspot group consisting of as many as 130 in 1063 sunspots.
Background: The role of soil in building construction is to support the loads above it. Different types of soil with poor mechanical properties require more attention. Therefore, more effort is needed to stabilize the soil by improving its properties. These improvements are intended to modify soil properties to improve engineering performance, such as strength, decrease in compressibility and permeability. This study aimed to compare the potential of lime and brick powder as stabilizers based on the California Bearing Ratio (CBR) values. Soil stabilization can be defined as modifying the soil properties by chemical or physical means to improve its engineering efficiency. The main objectives of stabilizing soil are increasing its bearing capacity, resistance to weathering processes, and permeability. Methods: This work did laboratory tests with disturbed and undisturbed soil samples. The proportions of lime or red brick powder additives are 0%, 5%, 10%, and 15% of the soil sample. From the results of the laboratory tests, the soil type obtained is MH (low plasticity silt) as per the Unified Soil Classification System (USCS). Results: This study showed that soft soil could be improved by adding lime and red brick powder as a soil stabilizer. In both soaked and unsoaked CBR tests, there was an increase in the CBR value for each proportion of the mixed additives. However, the red brick powder addition (15%) has significantly increased the CBR value. Conclusions: The soil sample mixed with 15% red brick powder had the highest Maximum Dry Density (MDD), about 5.5% over untreated soil. The increment of lime to 15% has increased the CBR soaked by 61% in relation to untreated soil. The increment of red brick powder to 15% has increased the CBR unsoaked by 73% in relation to untreated soil.
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