Summative EEG-based Assessment of the Relations between Learning Styles and Personality Traits of Openness

AbstractLearning styles (LS), being one of the important attributes of a learner's profile, are relevant to different aspects of teaching and learning such as the learner's achievement and motivation. Equally important is the personality traits of ‘Openness’, which relate positively to knowledge and skill acquisition, thus making them relevant to learning and learners differences. Recognizing the importance of LS and Openness in profiling learners, the researchers carried out this study to examine the relationship between these two factors using a novel method based on Electroencephalogram (EEG) technology. In this research, Kolb's Learning Style Inventory (KLSI) was used to determine 131 participants’ LS: Diverger, Assimilator, Converger or Accommodator. The EEG technology was used to record the participants’ brain signals (with their eyes closed) to generate the dataset of EEG Beta band of baseline condition. Later, the dataset was processed and classified based on the LS using the 2-Step Cluster Analysis. The result showed that the brain signals could be processed effectively to classify the participants’ LS. More importantly, among the LS studied, convergers and assimilators were observed to have positive and strong relation with Openness. Between the two learning styles, assimilators were found to have stronger relation with Openness than convergers

Malapari yang Produktif: Berpotensi memulihkan keseimbangan antara manusia dan planet

Kementerian Lingkungan Hidup dan Kehutanan Indonesia melalui Kontribusi yang Ditetapkan Secara Nasional (Nationally Determined Contributions) di bawah UNFCCC telah menetapkan target ambisius untuk memulihkan 14 juta ha lahan terdegradasi pada tahun 2030 dengan tingkat kelangsungan hidup 90%. Ini membutuhkan pemilihan jenis-jenis pohon pada bentang alam yang tepat untuk tujuan yang tepat. Pohon Pongamia (Pongamia pinnata syn. Milettia pinnata) yang termasuk dalam jenis kacang-kacangan dapat dimanfaatkan untuk memulihkan lahan terdegradasi sekaligus menyediakan berbagai manfaat. Pongamia tumbuh secara alami di seluruh Indonesia, di Sumatra, Jawa, Bali, Nusa Tenggara Barat dan Maluku. Tinggi pohon ini mencapai 15-20 m dan dapat tumbuh pada rentang kondisi lingkungan hidup termasuk pada lahan-lahan marjinal. Bijinya dapat menghasilkan minyak mentah sebanyak 40% dari beratnya. Pongamia juga menyediakan makanan, kayu, pakan ternak, obat-obatan, pupuk dan bahan bakar alam. Oleh karenanya, sebagai jenis multifungsi, pongamia memiliki potensi besar untuk menghadapi krisis energi dan memulihkan sebagian besar lahan yang terdegradasi

Prolific Pongamia: Potential to restore equilibrium between people and planet

Indonesia’s Ministry of Forests and Environment through its Nationally Determined Contributions under UNFCC has set an ambitious target to restore 14 million ha of degraded land by 2030 with 90% survival rate. This requires choice of right tree species in right landscape for the right purpose. The leguminous tree pongamia (Pongamia pinnata syn. Milettia pinnata) could be utilized to restore the degraded land while providing multiple benefits. Pongamia naturally grows across Indonesia, in Sumatra, Java, Bali, West Nusa Tenggara and Maluku. It grows to a height of 15–20 m and can grow in a range of environmental conditions including marginal lands. Its seeds can generate up to 40% crude oil by weight. Pongamia also provides, food, wood, fodder, medicine, fertilizer and biofuels. Therefore, as a multipurpose species, pongamia holds great potential to combat Indonesia’s energy crisis and to restore much of the degraded land

Effects of blend of canola oil and palm oil on nutrient intake and digestibility, growth performance, rumen fermentation and fatty acids in goats

The study examined the effects of blend of 80% canola oil and 20% palm oil (BCPO) on nutrient intake and digestibility, growth performance, rumen fermentation and fatty acids (FA) in goats. Twenty-four Boer bucks were randomly assigned to diets containing 0, 4 and 8% BCPO on a dry matter basis, fed for 100 days and slaughtered. Diet did not affect feed efficiency, growth performance, intake and digestibility of all nutrients except ether extract. Intakes and digestibilities of ether extract, unsaturated fatty acids (FA) and total FA were higher (P < 0.05) while digestibility of C18:0 was lower (P < 0.05) in oil-fed goats than the control goats. Total volatile FA, acetate, butyrate, acetate/propionate ratio and methane decreased (P < 0.05) with increasing BCPO but propionate, NH3 -N and rumen pH did not differ between diets. Ruminal concentration of C18:0, n-3 FA and total FA increased (P < 0.05) while C12:0, C14:0, C15:0 and n-6 FA decreased with increasing BCPO. Analysis of the FA composition of Triceps brachii muscle showed that concentrations of C16:0, C14:0 and C18:2n-6 were lower (P < 0.05) while C18:1n-9, C18:3n-3 and C20:5n-3 were higher in oil-fed goats compared with control goats. Dietary BCPO altered muscle lipids without having detrimental effects on nutrient intake and digestibility and growth performance in goats

Suitability of bioenergy tree species on degraded peatlands in Central Kalimantan, Indonesia

Vast areas of degraded peatlands in Kalimantan need a sustainable longterm restoration mechanism, ideally one that can address energy security without compromising food production or biodiversity conversation. This research assesses the survivability and growth performance of potential bioenergy crops: gamal (Gliricidia sepium (Jacq.) Walp.), kaliandra (Calliandra calothyrsus Meissner), kemiri sunan (Reutealis trisperma (Blanco) Airy Shaw) and nyamplung (Calophyllum inophyllum L.), that could be cultivated to produce bioenergy and restore degraded peatlands. Parameters observed were tree height and stem diameter growth as well as plant survival rates. Trials was conducted on a two-hectare demonstration plot on burned degraded peatland in Buntoi village, Pulang Pisau district, Central Kalimantan province. Using a split plot design, two treatments were applied to each species, i.e., agroforestry (intercropped with Ananas comosus (L.) Merr.) and monoculture plantation. For each species, these treatments were replicated in two separate subplots. Results indicate nyamplung being the most adaptable species, followed by kemiri sunan, and both species performing better under agroforestry than monoculture treatments. Further study is needed to assess productivity and associated biofuel yields

Development of hydrophobic reduced graphene oxide as a new efficient approach for photochemotherapy

10.1039/d0ra00186dRSC Advances102212851-1286

Pongamia: A Possible Option for Degraded Land Restoration and Bioenergy Production in Indonesia

Indonesia has 14 million ha of degraded and marginal land, which provides very few benefits for human wellbeing or biodiversity. This degraded land may require restoration. The leguminous tree Pongamia pinnata syn. Milettia pinnata (pongamia) has potential for producing biofuel while simultaneously restoring degraded land. However, there is limited information on this potential for consideration. This paper aims to address the scientific knowledge gap on pongamia by exploring its potential as a biofuel and for restoring degraded land in Indonesia. We applied a literature review to collect relevant information of pongamia, which we analyzed through narrative qualitative and narrative comparative methods with careful compilation and scientific interpretation of retrieved information. The review revealed that pongamia occurs naturally across Indonesia, in Sumatra, Java, Bali, Nusa Tenggara and Maluku. It can grow to a height of 15–20 m and thrive in a range of harsh environmental conditions. Its seeds can generate up to 40% crude pongamia oil by weight. It is a nitrogen-fixing tree that can help restore degraded land and improve soil properties. Pongamia also provides wood, fodder, medicine, fertilizer and biogas. As a multipurpose species, pongamia holds great potential for combating Indonesia’s energy demand and restoring much of the degraded land. However, the potential competition for land and for raw material with other biomass uses must be carefully managed

Potential benefits of integrated bioenergy and food production systems on degraded land in Wonogiri, Indonesia

Cultivating suitable biofuel crops on degraded land by involving local communities can be a promising solution for energy and food security while restoring land. This chapter provides information on the socioeconomic and environmental benefits of Calophyllum inophyllum L., known locally as nyamplung, based on agroforestry systems practiced by local farmers in Wonogiri district, Central Java province, Indonesia. Relevant information was gathered through field observations and a focus group discussion with 20 farmers practicing “nyamplung-based agroforestry systems” with rice, maize, peanuts and honey. The net present values (NPVs) of rice and peanuts indicated negative profitability when they were grown as monocultures, whereas maize generated only marginal profits. Amazingly, honey production utilizing nyamplung produced an NPV nearly 300 times higher than maize. However, combined with nyamplung, honey was also the commodity most sensitive to decreases in production, followed by nyamplung–peanut and nyamplung–rice combinations. While decreases in production had little effect on the NPVs of rice, peanuts and maize, these annual crops can only be cultivated for a maximum of six years within nyamplung’s 35-year production cycle, due to canopy closure after this time. In conclusion, Nyamplung-based agroforestry systems can provide economic, social and environmental benefits on different scales. Additionally, considering the high profit potential of combining nyamplung with honey production, it is necessary to improve and develop bee husbandry practices to make doing so a viable option for local farmer