Analysis of the Difficulty of Solving Physics Problems During Online Learning at SMA Negeri 1 Tikep Against the Online Media Used

Online learning is an alternative in the implementation of education in Indonesia. During the Covid-19 pandemic, education needs to be carried out, because education has an important role in the progress of a nation. Therefore, this study aims to analyze the difficulty of solving physics problems during online learning using online media at SMA Negeri 1 Tikep. The data used in this study were primary data obtained from questionnaires, and interviews with students of class X IPA 1. The location of this study was at SMAN 1 Tikep, in West Muna Regency, Southeast Sulawesi Province. This study uses a quantitative method approach in analyzing the difficulty of solving physics problems during online learning using online media. Based on the results obtained, only 29% of students can participate in online learning, while 71% of students cannot understand the material provided online. In addition, the level of students' ability to understand physics equations is 25, and the level of students' ability to solve problems from physics equations is very low, namely 18%. Based on the results of the study, it can be said that online physics learning has not run optimally. This is influenced by the supporting facilities for the implementation of online learning are not supported, such as the quality of the internet network is good. In addition, the use of the WhatsApp application which has limited features is a problem in online learning. So that the online physics learning that is carried out is not effective, which has an impact on students who are unable to understand and solve physics equations. Based on the results of the study, it is hoped that it can be used as an evaluation material for the government in providing supporting facilities for the implementation of online learning

Comparative Analysis of the Effectiveness of Physics Learning Outcomes Against Online and Offline Learning at Public High School 1 Tikep

The Covid-19 pandemic has had a significant impact on education in Indonesia. From 2020 to 2021, the government requires that the learning process be carried out online. However, in early 2022 the government allowed schools in several areas to carry out offline (face-to-face) learning by implementing strict health protocols. Therefore, this study's purpose was to compare the effectiveness of physics learning outcomes against online and offline learning at SMA Negeri 1 Tikep. This study uses a quantitative method approach in analyzing physics learning outcomes. The data used in this study were 116 sample data obtained from a questionnaire given to class X IPA students at SMAN 1 Tikep. Based on the study's results, it was found that as many as 98% of students were happy with offline learning, while only 36% were happy with online learning. Offline physics learning is effective for student learning outcomes, while online learning is less effective. Students learning motivation in taking physics lessons offline has increased by 100%. When compared to student learning motivation in participating in online physics learning, it is only 17.24%. Based on the study results, it can be concluded that online physics learning at SMAN 1 Tikep cannot run effectively. The results of this study are expected to be used as material for evaluating the government in the distribution of education in Indonesia, especially in the procurement of Information and Communication Technology (ICT) facilities

Sentiment Analysis of Twitter Data using Statistical Methods

ABSTRACT Social media today has becomes a very popular tool in society. Millions of users share their opinions on different topics like politics, technologies, product and many more. Therefore social media is a rich source of data for opinion mining and sentiment analysis. In this paper we use the twitter data for sentiment analysis. First we use the Latent Dirichlet Allocation (LDA) to identify the key terms. These key terms are used to represent each tweet in n dimensional vector. Using this tweet vectors, we build a sentiment classifier, which is able to determine positive, negative, and neutral sentiment of each tweet. Experimental result show that our proposed method is efficient and out performs

EFFECTS OF ORGANIC FERTILIZERS ON THE SEED GERMINATION AND SEEDLING VIGOUR OF TOMATO

Pot experiment was conducted to evaluate the efficiency of different organic fertilizers on germination and early growth of tomato seedling. Four different types of compost like trichocompost, vermicompost, kitchen waste compost, cow dung based bioslurry and soil (control) were used as treatment. Organic fertilizers except kitchen waste compost significantly influenced germination and other growth parameters of tomato seedling in comparison with control treatment. Trichocompost showed the better performance in all parameters which was followed vermicompost in most cases. The poor performance exhibited by kitchen waste compost might be due to the presence of heavy metal like lead and copper which inhibit the emergence of tomato seed and thereafter on different parameters of tomato seedling. Overall, trichocompost and vermicompost could be used as potting media for growing healthy tomato seedling while kitchen waste compost may be discourage to use as potting media for vegetable seedling production

Recycling of Spent Mushroom Substrate for the Production of Oyster Mushroom

The huge amount of spent mushroom substrate (SMS) was disposed, especially around the mushroom cultivation complexes. The present study aimed at utilizing this SMS in a productive and sustainable way. Experiment was carried out to reuse of SMS of oyster mushroom for the production of oyster mushroom at Bangladesh Agricultural University (BAU), Mymensingh. Two mushroom species (Pleurotus ostreatus and P. florida) were grown on SMS supplemented with sawdust and wheat bran at different proportions. The results showed that SMS supplement with 60% sawdust + 20% wheat bran demonstrated the highest biological yield, economic yield and biological efficiency for both P. ostreatus and P. florida. Yield parameters were increased with increasing C/N ratio where as 36:1 C/N ratio exhibited the highest yield. The C/N ratio below or above 36:1 decreased yield of both species of oyster mushroom. The optimum C/N ratio for economic yield varied between the two oyster mushroom species and found to be 35.2 for P. ostreatus against C/N ratio of 40.1 for P. florida. Concerning biological yield and biological efficiency the optimum C/N ratio was found 35.7 for P. Ostreatus and 40.6 for P. florida. The study emphatically indicated that reuse of spent mushroom substrate with supplementation can be a good solution to address the disposal problem where as supplemented SMS can be a good substrate for further mushroom production

Nitrogen cycling enhanced by conservation agriculture in a rice-based cropping system of the eastern Indo-Gangetic Plain

Changes in soil tillage and residue retention after introducing conservation agriculture practices in intensive rice-based cropping systems in Bangladesh may alter nitrogen (N) cycling and N fertilizer requirements. An experiment was established on a farmer’s field, with a legume dominated-rotation (lentil-mungbean-monsoon rice), two types of tillage – strip planting (SP) and conventional tillage (CT); and two levels of residue retention – high residue (HR) and low residue (LR). A total seven crops were studied in the 2.5 year periods (2010-13). Soil total N concentration (TN), soil N-stocks after Crop 7 and the annual N accumulation rates at 0-15 cm soil depth for 2010-13 are presented. At the end of Crop 7 (after 2.5 years), SP treatment increased the TN concentrations and N-stocks by 11 % compared to CT at 0-15 cm soil depth. The annual soil N accumulation rates were 66 kg/ha with SP while N losses were 20 kg/ha under CT during 2010-13. The N accumulation rate was 3.3 times higher with HR than LR. From 2010 to 2013, the N balance calculation indicated an estimated N gain of 51 kg/ha in SPHR but a loss in CT which ranged from 9 kg/ha in CTHR to 319 kg/ha in CTLR at 0-15 cm soil depth. The N uptake was also 14 % higher from grain and straw under SP than CT. Both SP and HR increased TN, N-stocks and N accumulation by contrast with N loss under CT. However, the turnover of TN in SPHR needs longer investigation because of likely effects on N fertiliser requirements

Changes in soil organic matter, plant nutrients and system productivity under conservation agricultural practices in the rice-jute cropping system

Soil organic matter (SOM) is central to soil quality and nutrient cycling. In Bangladesh, depletion of soil fertility is a serious threat to sustainability of agricultural production due to high cropping intensity and agriculture practices based on conventional tillage and residue removal (Rijpma and Jahiruddin, 2004). In this situation, CA practices (minimum tillage, crop residue retention and diverse crop rotations) could be a good option for the improvement of soil quality and crop productivity in Bangladesh. However, CA practices are poorly developed for intensive rice-based cropping system and their effect on SOM, plant nutrients and system productivity have not yet been properly addressed. Hence, the present study was undertaken to monitor the changes in SOM and other plant nutrients with system productivity under CA practices in the rice-jute cropping system in the Low Ganges River Floodplain of Bangladesh

IMPACT OF MICROCREDIT ON INCOME AND NON-INCOME DIMENSIONS OF POVERTY – A STUDY ON DIFFERENT GROUPS OF POOR IN BANGLADESH

This study investigates the differential impact that microcredit borrowers of different income classes might have experienced in their poverty condition after borrowing microcredit loans. Methods of this study consisted of a cross-sectional survey as well as unstructured interviews with the female microcredit borrowers in Bangladesh. Results show that an overwhelming majority of microcredit borrowers has experienced improvement in their poverty condition, but the degree of benefits widely varies among different groups of borrowers. Borrowers with some resource base have been benefitted most; whereas the absolute poor borrowers, with hardly any asset holding, not only have experienced least improvement in their financial condition but also have become even poorer in few instances.  Article visualizations

Strip planting decreases nitrogen fertilizer requirements while retention of more residue increases them in a rice - wheat - mungbean sequence on a subtropical floodplain soil

Conservation agriculture (CA) has not been well developed for intensively cultivated (2-3 crops yr-1) rice- based cropping systems which produce large amounts of crop residues annually. Thus, we examined the effects of two crop establishment systems (minimum soil disturbance by strip planting (SP) or conventional tillage (CT)), two residue retention levels (low and high) and five N rates (60, 80, 100, 120 & 140% of the recommended N fertilizer doses (RFD) on nine consecutive crops on an Aeric Haplaquept under rice-wheat- mungbean sequence. Rice yields were comparable between the crop establishment types but system yields were significantly higher with SP in two out of three years compare to CT. Increased residue retention did not significantly influence rice yield but positively influenced system yields. No substantial differences in optimum N rate was estimated between CT and SP for 90% of maximum yield goal (MYG) for all the three years but substantially decreased in SP compared to CT in two out of three years for 95 and 99% of MYG. The N fertilizer requirement was 6-22% higher with high residue retention compared to low residue retention plots for all the three yield goal levels. High residue retention also increased soil organic carbon (SOC) at 0- 6 cm depth in both tillage treatments. In conclusion, introducing CA did not alter the N fertilizer requirements of rice for 90% of MYG but reduced the requirement for 95 and 99% of MYG compared to CT. However, there was evidence that the retained crop residue immobilized N and increased the fertilizer N requirement