bluuebunny/crossref_metadata_2025 huggingface dataset:
Student Optimism Regarding Online Learning During the Covid-19 Pandemic
Authors: . Istiqomah , Prastuti Endang
Published: January 2021

Optimism is a positive attitude towards a situation, looking at something from the good side, and the hope of getting the best results from the situation. This study aims to find an overview of students’ optimism regarding online learning during the Covid-19 pandemic. The research subjects were high school students who were taught via online systems. The study is based on data analysis using descriptive statistics. The results showed that the opimism of female students was higher than that of male students. In terms of optimism, the most dominant trait was the personalization aspect and the weakest was the permanence aspect.
Keywords: Optimism, online learning, Covid-19 pandemic
The Role of the Flannel Flower Bouquet Workshop in Enhancing Creativity and Promoting Entrepreneurship Amongst Orphans
Authors: Noorrizki Rakhmaditya Dewi , Qoyyimah Nur Rohmah Hidayatul , Tiyaningsih Retno Sulis- , Nufus Hayatun , Sausan Nadiatul
Published: January 2021

This paper describes the community service program carried out to enhance the creativity and entrepreneurship of orphans in the Assalam Shobuur orphanage. The program was conducted in six days and was divided into two sub-activities: a flannel flower bouquet workshop; and an entrepreneurship workshop focusing on business promotion. The flannel flower bouquet workshop offered tutorials while the entrepreneurship workshop used lecture methods, case studies, and brainstorming. The workshops were run for twenty orphan children who lived in that orphanage, and have successfully improved the subjects’ knowledge of entrepreneurship.
Keywords: orphan, workshop, creativity, entrepreneurship
Disobeying Government Rules: A Descriptive Study of Intention to Apply Health Protocol During Covid-19
Authors: Noorrizki Rakhmaditya Dewi , Suhanti Indah Yasminum , Pambudi Kukuh Setyo
Published: January 2021

This study aims to determine the public’s intention to apply health protocols during the Covid-19 pandemic. data collection is done by distributing the scale online. The scale is based on Ajzen’s Theory of Planned Behaviour with a reliability coefficient of 0.061-0.662. The number of research subjects was 508 people with the result that 60% of the research subjects intended to apply the health protocol. The aspect with the highest correlation was perceived behavioural control (0.652), then subjective norms (0.579), and the lowest correlation was attitude (0.482). To change individual behaviour, education on disease and empowerment is needed so that people can evaluate their perceived behavioural control. Knowledge is important to influence rational decision making of choosing healthy behaviour
Keywords: intention, obey, theory of planned behaviour, covid-19
The Determinant Factors of Employees’ Subjective Wellbeing
Authors: Situmorang Nina Zulida , Syuhada Muhammad Nur
Published: January 2021

One of the keys to productivity is the subjective wellbeing of workers. The professional and familial roles of women is a combination that promotes the growth of health and wellbeing. The objective of this study is to investigate the relationship between the work-family balance and gratitude towards employees’ subjective wellbeing. This research used quantitative approaches and data collected using three-scale: the subjective wellbeing scale, the work-family balance scale, and the scale of gratitude. This research subject consisted of 100 employees with married status, having more than 1 (one) child, working for at least two years, and Yogyakarta’s research position. Multiple linear regression analysis were used for data analysis. The findings revealed that there was a significant correlation with an R coefficient of 0.584 with a significance level (p) of 0.000 (p <0.01) between work-family balance and gratitude for subjective wellbeing, meaning association between the balanced of work as well as family and subjective wellbeing is acknowledged. The result indicates a coefficient of correlation (rx1y) of 0.102 with a degree of significance of 0.000 (p<0.01). Results for the analysis of employees subjective wellbeing and gratitude resulting with a coefficient of association (rx1y) rx2y) of 0.584 with a significance level of 0.000 (p <0.01). Together, work-family balance and gratitude make a beneficial 34.1 percent contribution to subjective wellbeing. In conclusion, the study findings indicate a significant relationship between work-family harmony and gratitude for employees’ subjective wellbeing.
Keywords: gratitude, subjective wellbeing, work-family balance
E-Learning Readiness and Learning Engagement during the Covid-19 Pandemic
Authors: Prihastiwi Wiwik Juwarini , Prastuti Endang , Eva Nur
Published: January 2021

This study aims to determine the effect of e-learning readiness on learning engagement and to find out which aspects have the greatest influence. The design of this research is correlational research, conducted via a questionnaire. The research sample was comprised of 125 students from the Faculties of Psychology, Law, Education, and Teacher Training at the Muhammadiyah University of Surabaya, Indonesia. Measuring e-learning readiness consists of 3 dimensions: computer / internet self-efficacy; online communication self-efficacy; and self-directed learning abilities. The dimensions of measuring learning engagement are cognitive, affective, and behaviour. Data were analysed using regression models. The results indicate that learning readiness contributed to the variance of learning engagement by 26%. The biggest contribution from each dimension of e-learning readiness to engagement is self-directed learning, then internet self-efficacy, and online communication self-efficacy. However, the study also obtained anecdotal evidence that the subjects were not satisfied with e-learning because they did not get data about the material.
Keywords: learning enggagement, e-learning readiness, covid19
A Conceptual Paper: Moderating Effects of Metacognition and Gender on the Association between Emotion Regulation and Self-Efficacy Among Pre-Service Teachers
Authors: Wei Yeoh Sun , Hutagalung Fonny Dameaty , Peng Chew Fong
Published: January 2021

Pre-service teacher’s self-efficacy plays a vital role in Malaysia educational transformation. Emotion regulation influences one’s ability to cope with the stress and challenges. This research focuses on the two variables which determine pre-service teacher’s self-efficacy and emotion regulation. Metacognition enables pre-service teachers to rationally evaluate their own capability. It serves as an important tool in emotional regulation to engage pre-service teacher in cognitive re-appraisal process. Gender differences lead to different thinking style and emotion regulation strategies. Metacognitive Awareness Inventory (MAI), Emotion Regulation Questionnaire (ERQ) and General Self-Efficacy (GSE) will serve as the instruments in this study. 133 pre-service teachers from Institute of Teacher Education Campus Bahasa Melayu will be selected using clustered random sampling method. The findings of this research can serve as a reference in teacher preparation process.
Keywords: metacognition, emotion regulation, self-efficacy, pre-service teacher, gender differences
Stop Academic Procrastination During Covid 19: Academic Procrastination Reduces Subjective Well-Being
Authors: . Suhadianto , Arifiana Isrida Yul , Rahmawati Hetti , Hanurawan Fattah , Eva Nur
Published: January 2021

Happiness is the life goal of everyone, including students. But in fact, some student behavior is not in line with the effort to get happiness. Academic Procrastination is one of them. The Covid-19 pandemic, which requires learning to be carried out online, appears to have increased academic procrastination, although there is no definite data about it. This study aims to determine the impact of academic procrastination on Subjective Well-Being. The design of this research is literature review. Researchers conducted a literature search regarding the academic procrastination and subjective well-being through Google Scholar and ScienceDirect. Hermeneutic techniques are used to analyze the literature according to the research objectives. The literature review results show that academic procrastination reduces Subjective Well-Being. The results of this literature review can be a warning to students not to do academic procrastination.
Keywords: Academic procrastination; Subjective well-being; Academic Procrastination During Covid-19
The Anxiety Dynamics amongst the Elderly during the Covid-19 Pandemic
Authors: Sulistiyaningsih Retno , Rasyid Aldelia Shielda , Amalia Dillia Nur , Harna Fiska Fitria , Mubarok Ali Syahidin
Published: January 2021

The elderly are the last stages of human development. In this condition, the elderly often suffer physical decline that may have little effect on their psychological conditions, including anxiety. The study deals with the dynamics of anxiety experienced by the elderly during the Covid-19 pandemic. This study is qualitative with a case study approach. The excavated aspects are somatic, cognitive, emotional and behavioural. The study involved three participants in the age span of 55-65. Participant 1 was 60 years old, participant 2 was 62 years old, participant 3 was 63 years old. The data-mining techniques of this study use one-meeting interviews with each participant. Observation and documentation are also used for gaining in-depth data. Data analysis techniques use driven theory and data triangulation to check the credibility of data. The results of this study indicate that the three participants experienced anxiety because of a news release about Covid-19. The suggestion from this study is to provide more attention and information to the elderly during the Covid-19 pandemic.
Keywords: anxiety, elderly, covid-19
The Role of Optimism in Responding to Covid-19
Authors: Eva Nur , Fitria Sari Qurrotul Aini , Andini Ravitawati Dwi , Mahasin Alsabila Zara
Published: January 2021

Optimism is a psychological phenomenon that influences many areas of life, optimistic individuals always look positively on every event in life. The Covid-19 pandemic has brought many changes to human life, virus which in some cases is deadly and spreads in short time. This article is a literature study assessing the role of optimism in responses to the Covid-19 pandemic. The results and discussion showed that optimism had a good impact on individuals, reducing anxiety and fear, but optimism must lead to positive behavior as well, do not let individual optimism override all policies and protocols to prevent the spread of viruses.
Keywords: COVID-19, Pandemic, Optimism
The Relationship Between Phubbing and Romantic Relationship Satisfaction: A Literature Review
Authors: Utami Masita , Anam Muhammad Khairul , Noorrizki Rakhmaditya Dewi
Published: January 2021

This study examined the relationship between phubbing and romantic relationship satisfaction in dating couples. Research on the topic of discussing the relationship between phubbing and romantic relationship satisfaction is rarely conducted in Indonesia. Research carried out abroad focuses on the satisfaction of romantic relationships in marriage couples, not dating couples. Therefore, a research that discusses phubbing and romantic relationship satisfaction in dating couples is needed. Two variables are still considered new in the world of psychology. This study aims to determine the relationship between phubbing and romantic relationship satisfaction in dating couples. The method used in this study is a literature review in which presented various studies. In this research, presented several studies related to related aspects, namely phubbing and satisfaction romantic relationship. It was concluded that there was a relationship between phubbing and romantic relationship satisfaction among dating couples. In addition, we presented several studies related to the topic and related variables within the aspects. Further research is needed in order to know what variables are influenced and influenced.
Keywords: phubbing, romantic relationship, relationship satisfaction
The Resilience of Recovered Covid-19 Patients
Authors: Diponegoro Ahmad Muhammad , Khasanah Intan Nur , Salma Nabila , Perceka Muham- mad Zaki , Murti Viomita Sepnifa , Vallyzsanta Yolan , Irmawati Yeni , Larasati Puspita
Published: January 2021

This study aims to assess the resilience of patients recovering from Covid 19, using a qualitative method with a case study research design. The subjects of this study were patients recovered from Covid 19. The data collection tool in this study was an interview. The data analysis technique in this research is content analysis technique. The data validation method in this study used data triangulation. The results showed that based on the emotional regulation aspect, the three subjects were able to control their emotions well, in the impulse control aspect the three subjects received support and motivation from family and fellow Covid 19 patients. Aspects of causal analysis of the three subjects had a feeling of fear of being shunned by people in the surrounding environment and the three subjects were worried if there were family members who contracted Covid 19. Then in the aspect of empathy, when they found out that there were Covid 19 patients who had worsened, the three subjects felt concerned and tried to show their empathy by providing motivational support. In the aspect of self-efficacy, the three subjects received support from the surrounding environment and the three subjects always thought positively. Then in the aspect of reaching out, after being declared cured of Covid 19, the three subjects felt grateful and could take lessons from what the three subjects had experienced. So, from these results it can be seen that the three subjects have both internal and external motivations that make the three subjects become resilient individuals.
Keywords: COVID-19, resilience, pandemic, patient infected with positive covid 19
Academic Resilience of “Bidik Misi” Grantee Students in Malang During Pandemic Covid-19
Authors: Hapsari Ayu Dyah , Rahmawati Hetti , Puspitasari Dwi Nikmah , Suhanti Indah Yasminum
Published: January 2021

Academic resilience can be understood as a student’s ability to respond, adapt, and remain persistent in difficult situations. Current situation of the Covid-19 pandemic has changed many aspects of life, including the learning method. This situation led to impossibility to gather in large numbers in one place, making learning to be held by distance through online media. However, online learning in fact also causes its stressors for students especially “Bidik Misi grantee” students in such problems as internet bills issues, networks, and most importantly understanding of the material presented by the lecturer from different location. The purpose of this research is to know the description of the academic resilience of Bidik Misi grantee students in Malang during the Covid-19 pandemic using online approach in lectures. The data collection method was done through a questionnaire via google form with 61 Bidik Misi grantee as respondents. The instrument in this study used the resilience instrument from Cassidy (2016), the results of the study showed that only 1 subject had very high academic resilience, 21 subjects had high academic resilience, 25 subjects had moderate academic resilience,9 subjects had low resilience and 5 subjects had very low academic resilience.
Keywords: resilience, Bidik Misi grantee students, pandemic era
School from Home during COVID-19 Pandemic, a Descriptive Study: Effectivity of Learning towards High School Students in West Sumatra
Authors: Susanti Meria , Hidayati Izzanil , Anggreiny Nila , Maputra Yantri
Published: January 2021

COVID-19 pandemic has forced several countries to manage regulations in order to minimize the spread of virus. Learning from home, or school from home (SFH) is one of the responses towards COVID-19. This study aims to explore the effectivity of SFH in West Sumatra. This study uses descriptive quantitative research survey design. The effectivity of SFH measures by using 9 aspects related to teaching practices: communicating effectively, guiding students’ knowledge, promoting individual learning, engaging students with content, ensuring content accessibility, maintaining academic integrity, keeping the course a safe place, meeting students’ needs, and scaffolding. Statistical analysis uses to explore the effectivity of learning during SFH. Results indicates that averagely subjects perceived that all aspects have fulfilled by school teachers (M= 2.7-3.2). Its can concludes that SFH is quite effective for student in West Sumatera. On the other hand, open-ended questionnaire showed the overview of the implementation SFH during initial months of pandemic. 53.3% of learning are using WhatsApp, television (TVRI; 2.3%), Google Meet (8.2%), Zoom (6.5%), and other media (29.5%). Moreover, all subjects preferred face-to-face learning than online learning. Majority of subjects (30.7%) suggested online learning to be more creative and attractive, and using easy to understand methods (27%). Implications are suggested for the field of teachers or educational sectors in creating online education programs to reach optimal learning.
Keywords: school-from home, online-teaching, learning effectiveness
Student’s Evaluation on the Use of Learning Media During Pandemic
Authors: Mantara Angga Yuni , Prastuti Endang , Wahyudi Titis Setyo
Published: January 2021

This research aims to find out student assessments of the learning media used during the Covid-19 pandemic. We tested several learning media used, first is the WhatsApp group, zoom, and Learning Management System (LMS) used by campus. Descriptive statistic from 616 people (24.28% were male), we found that the use of text-based synchronus learning media was more desirable than the use of existing video or LMS. Positive ratings are mainly on the frequent use, effectiveness, flexibility, speed, and cheap. However, in terms of interactive abilities, clarity of information, and fun media, google meet combination with zoom better than other media trough synchrous audio-video communcation. In other hand, Campus’s LMS were lowest on mostly dimentions that used in this research.
Keywords: LMS, effectiveness, pandemic
A Homero lo trajo el mar. Navegando en la Odisea
Authors: Hincapié Grisales Óscar , García Castro Juan Fernando
Published: January 2021

Presentamos a la comunidad académica el resultado de una investigación interdisciplinar sobre la primera y más completa obra literaria de la cultura occidental, la Odisea. Este libro, además, pretende exponer de forma científica aspectos de la literatura clásica que han sido olvidados por la educación actual y que podrían nutrir el acervo cultural, lingüístico y literario de instituciones de formación en los niveles básico, medio, superior, pregrado y postgrado, no solo en Colombia sino en otros países. Un propósito del libro consiste en que los lectores encuentren en él modelos renovados de lectura literaria homérica que les permita construir una visión integradora de la educación y las humanidades. Se busca, por lo tanto, un impacto en los programas de educación y humanidades (literatura, Flosofía y Filología).
Glucose variability in pregnant women with newly diagnosed hyperglycemia
Authors: Plekhanova M. A. , Burumkulova F. F. , Petrukhin V. A. , Budykina T. S. , Panov A. E.
Published: January 2021

Background: High-performance parallel next-generation sequencing (NGS) allows for identification of various maturity-onset diabetes of the young (MODY) subtypes also during pregnancy. As this method is expensive and time-consuming, it has proposed to use various predictors for the diagnosis of mutation in the hexokinase (GCK)/MODY2 gene, helping to select the patients for subsequent molecular genetic testing. Hyperglycemia due to MODY2 is commonly newly diagnosed during pregnancy; therefore, there is a search for factors specific to this mutation in pregnant women.

Aim: To evaluate blood glucose variability in pregnant women with newly diagnosed hyperglycemia at early gestation and to determine the threshold value of the glycemic variability coefficient for pregnant women with a mutation in the GCK/MODY2 gene.

Materials and methods: This observational single center study included 41  pregnant women with newly diagnosed early hyperglycemia (not meeting the criteria for manifest diabetes mellitus). Molecular genetic testing was performed in all of them. According to its results, they were retrospectively categorized into two groups: with early gestational diabetes mellitus (GDM, no mutations) and with hyperglycemia related to a mutation in the GCK/MODY2 gene. A comparative analysis of glycemic variability in the two groups was performed. Sensitivity and specificity of the cutoff value for the coefficient of variability as a diagnostic marker of MODY2 were also calculated.

Results: The pregnant women with GDM had significantly higher age and body mass index (BMI) than those with MODY2 (p<0.05). There were significant differences in venous fasting plasma glucose and glycated hemoglobin, with these parameters being higher in the pregnant women with MODY2 (p<0.05). In the patients with a  mutation in the GCK gene, hyperglycemia was diagnosed earlier and insulin therapy was started earlier during pregnancy than in those with GDM (p<0.05). The ROC analysis of the diagnostic accuracy of the variability coefficient showed that at the threshold CV (coefficient of variation) value of 20.8, the area under the curve was 0.742 (95% confidence intervals 0.597 to 0.888; p<0.005), with the sensitivity of 65% and the specificity of 65.4%.

Conclusion: The calculated sensitivity of 65% and specificity of 65.4% for the CV of 20.8 do not allow for its use as an independent selection criterion for subsequent confirmation of MODY2. However, its combination with the A.J. Chakera criteria (BMI<25 kg/m2 and fasting glucose≥5.5  mmol with 68%  sensitivity and 96%  specificity) allows to clarify the category of pregnant women with newly detected early hyperglycemia, to whom the search for mutations in the GCK gene should be recommended.
Narrative Identity Constructs and Effects on the Performance in Sport Field
Authors: Briganti Paola , Varriale Luisa , Mele Stefania
Published: January 2021

The exposure to the numerous and challenging changes and pressures in the contemporary society (new technologies, socio-demographic processes, financial and economic crisis, organisational reshaping, societal values changes, etc.) significantly affects the way to live of individuals, who need to completely rethink and reshape their way to behave for being able to face all the new difficulties in their everyday life. Individuals face many difficulties, especially in terms to express themselves, keeping their own identity also with respect of their societal and cultural values. It is not easy to keep and express our own identity into contemporary society characterised by high pluralism and multiculturalism, where, especially the new generations need to feel accepted by the world and don’t often follow their real way to be and behave. In the sport setting the debate on this issue is still open with an increasing focus on the effects of narrative identity constructs on the athletes’ performance. This conceptual study with its explorative nature aims to investigate this issue of narrative identity as a possible effective way for individuals to face the numerous challenges in their everyday life, trying to keep their strong values and their real way to be and behave. The purpose is to analyze the identity issue though the narrative identity constructs with direct and indirect connection to the sport setting, mostly athletes’ performance. Specifically, our purpose is to investigate the relationship between these topics for athletes involved in sport competitions evidencing their way to tell about them.
Effect of Investment Decision and Tax Management on Stock Liquidity
Authors: Pandiangan Roristua , Murwaningsari Etty
Published: January 2021

The purpose of this study investigate effect of investment decisions, tax management on stock liquidity and investigate the effect of investment decisions, tax management on stock liquidity which moderated by liquidity. Novelty in the study is on the measurement of tax management variables, the contribution of this study is to introduce a new measurement of tax management and to provide information about investor responses and prospective investors in the stock market on tax management by companies in the context of Indonesia. The population of this study is manufacturing companies listed on the Indonesia Stock Exchange, determination of study samples using purposive sampling method with the criteria listed before 2015, complete data and non-delisting so as to obtain 127 manufacturing companies  with 5 years observation year (2014-2018) and obtained 635 company years data, multiple regression analysis and moderate regression analysis (MRA) were used in this study. Research findings: 1) Investment Decisions, Tax Management simultaneously influences and significant affects Stock Liquidity. 2) Investment Decisions have an effect and significant on Stock Liquidity. 3) Tax Management has an effect and is not significant on Stock Liquidity. 4) The effect of Investment Decisions on Stock Liquidity is not moderated by liquidity. 5) The effect of Tax Management on Stock Liquidity is not moderated by liquidity.
Short-Term Debt and Financial Performance of Small and Medium Scale Enterprises in Buganda Region, Uganda
Authors: Mugisha Henry , Omagwa Job , Kilika James
Published: January 2021

Short-term debt is regarded as an important source of financing for Small and Medium-sized enterprises (SMEs). This is because it can be easily accessed and useful during times of emergent working capital shortage. However, short-term debt is the least researched among the components of capital structure, which explains why its contribution to the financial performance of small and medium-sized businesses still lacks empirical validation especially in the Ugandan context. This paper sought to determine the effect of short-term debt on financial performance of Small and Medium Enterprises in Uganda. The study adopted a descriptive cross-sectional research design to collect and analyse the data. Stratified random sampling technique was used to select SMEs while purposive sampling technique was used to select one key respondent from each of the sampled 453 SMEs in Uganda. Primary data was collected using survey questionnaire. Data was analysed using descriptive statistics and simple linear regression analysis. The findings indicted that short-term debt had a negative and significant effect on financial performance of SMEs as measured by return on assets. The study provides empirical evidence to support the propositions in the extant literature that short-term debt significantly hampers financial performance of SMEs. The study recommends that SMEs should adopt low cost operation procedures to improve profitability. This would lead to accumulated profits that can be used for investment purposes as a means of driving growth among the SMEs without resorting to borrowing. This paper suggests that further research should be conducted to establish the justification for the negative and significant effect of short-term debt on financial performance using qualitative approaches.
Evaluasi klon jati (Tectona Grandis L.f) umur 20 tahun di KPH Cepu Perum Perhutani
Authors: Frestiana Br. Pelawi Deanova , Indrioko Sapto , Hidayati Fanny ,   Universitas Gadjah Mada, Wibowo Aris ,   Pusat Penelitian dan Pengembangan Perhutani Cepu
Published: January 2021

Evaluation of the teak clone test aims to determine the growth and genetic parameters of the clones at the age of 20 years. Teak clone test was established in 1999 with a Randomized Complete Block Design (RCBD). The number of clones used was 65 clones, five replications (blocks), four treeplots, with a spacing of 3m x 3m. Measurements were carried out on the growth characteristics (i.e., plant height and diameter at breast height / DBH) and wood quality (i.e., Pilodyn penetration stress-wave velocity / SWV). The results of the analysis of variance showed that there were very significant differences in all observed growth characteristics. Heritability for plant height, stem diameter, Pilodyn penetration, and SWV were 0.38, 0.51, 0.59, 0.29, and 0.53, respectively. The expected genetic gains for volume and SWV were 21.81% and 2.11%, respectively, by selecting the best seven clones. The correlation between growth characteristics and between wood quality with growth characteristic is positive, indicating that improvement in productivity is followed by wood quality. The best clones based on clone values of stem diameter and SWV characteristics are clones number 110, 24, 97, 108, 20, 35, and 31, respectively.
Karakterisasi morfologi, perbanyakan vegetatif dan potensi bambu (Gigantochloa dan Schizostachyum) sebagai tanaman untuk konservasi tanah dan air
Authors:   Pusat Penelitian Konservasi Tumbuhan dan Kebun Raya Lembaga Ilmu Pengetahuan Indonesia, Trimanto Trimanto , Wahyu Annisa Desya , Hanasari Dzaskyah ,   Universitas Brawijaya Malang
Published: January 2021

The potential of bamboo as a plant for soil and water conservation can be identified by the morphological character. The quality of bamboo can be shown from the morphological character. Bamboo is a plant that is difficult to propagate generatively, while there is a paucity information on the vegetative propagation of bamboo species especially genus of Gigantochloa and Schizostachyum. The aims of this research is to characterize morphology of bamboo, studies of bamboo propagation with vegetative method andmeasure the potential of bamboo as a plant for soil and water conservation. 4 species of bamboo namely Gigantochloa atroviolaceae Widjaja, G. robusta Kurz., G. luteostriata Widjaja and Schizostachyum zollingeri Steud.are used in this study. The result ofmorphology characterization show that four species of bamboo have unique morphological characteristics from reed midribs, reed height, diameter, leaves and roots. The results of vegetative propagation of bamboo using different growing media show that thecompost + soil (1: 1) is the best for bamboo growth. Soil media can also be used as an alternative media for vegetative propagation. Sand media gives the lowest growth. G. atroviolaceae and G. robusta are species of bamboo that suitable for soil and waterconservation. Both species of bamboo are characterized by strong reed, dense growth and canopy, good quality of litter, and a strong root system that supports to soil and water conservation.
Penyakit akar ganoderma pada sengon di Sleman Yogyakarta
Authors:   Universitas Lampung, Maryono Tri
Published: January 2021

Ganoderma root disease in the community forest of sengon is one of the limiting factor to increase the productivity of sengonwood. This disease has been reported in West Java, East Java, South Sumatra and South Kalimantan. The survey was conducted to determine the existence of Ganoderma root disease in three sengon fields in Sleman, Yogyakarta. The existence of Ganoderma root disease was recognized based on the symptoms of diseased plants and the present of Ganoderma basidiocarp on the diseased sengon stem. The survey results on three sengon fields was succeed in finding diseased plants and also the basidiocarp of Ganoderma on the basal of the diseased plant stem. Symptoms that have been found was either dead or dying trees (few leaves left). The basidiocarp of Ganoderma on the diseased plants varies in characteristic while its young and mature. The basidiospores is ellipsoid, truncate, rough (coarsely echinulated), and double-walled. The Ganoderma colony was white and turned to yellow orange from the center. Based on this study the Ganoderma root disease in sengon plants has developed in Sleman, Yogyakarta. The presence of dead or dying trees with few leaves left between healthy sengon trees and the presence of Ganoderma basidiocarp in diseased trees are indicator of the presence of root disease in the sengon field caused by Ganoderma.
Pengaruh asal benih timoho (kleinhovia hospita L.) terhadap pertumbuhan bibit di tingkat persemaian
Authors: Daradwinta Rafelinta , Pinasti Ragil ,   Fakultas Biologi, Universitas Gadjah Mada
Published: January 2021

Timoho (Kleinhovia hospita) wood is one of the raw materials for keris sheath that having high aesthetic and economic values. Due to exploitation of keris raw material that outmatches its planting activities, this type of tree is already hard to find in the Special Region of Yogyakarta, so this research aims to determine the generative propagation techniques carried out in the nursery of Center for Forest Biotechnology and Tree Improvement. Genetic material in the form of seeds in this study came from the parent trees grown in Bulaksumur region and Purwobinangun region, Yogyakarta. The methods that will be used are sampling, seed extraction, seed scarification in hot water for 24 hours, germination using wet tissue as media in petri dish, and planted in polybags. The result showed that viability of seeds from Bulaksumur region was 80% while that from Purwobinangun region was 68%. Observation and measurement of stem length and number of leaves every 2 weeks for 42 daysshowed that the number of timoho seed leaves from Purwobinangun hada higher number of leaves and a longer stem length, which is 19,11 ± 2,66 leaf blade and 11,54 ± 2,77 cm than the number of leaves and stem length from Bulaksumur, which is 0,59 ± 1,07 leaf blade and 7,59 ± 1,17 cm. Based on thisresearch, it was concluded that although the viability of seeds from Bulaksumur was higher, the possibility of inbreeding from it broodstock caused the growth of seeds from Bulaksumur not as good as the growth of seeds from Purwobinangun
High-Speed and Unified ECC Processor for Generic Weierstrass Curves over GF(p) on FPGA
Authors: Awaludin Asep Muhamad , Larasati Harashta Tatimma , Kim Howon
Published: January 2021

In this paper, we present a high-speed, unified elliptic curve cryptography (ECC) processor for arbitrary Weierstrass curves over GF(p), which to the best of our knowledge, outperforms other similar works in terms of execution time. Our approach employs the combination of the schoolbook long and Karatsuba multiplication algorithm for the elliptic curve point multiplication (ECPM) to achieve better parallelization while retaining low complexity. In the hardware implementation, the substantial gain in speed is also contributed by our n-bit pipelined Montgomery Modular Multiplier (pMMM), which is constructed from our n-bit pipelined multiplier-accumulators that utilizes DSP primitives as digit multipliers. Additionally, we also introduce our unified, pipelined modular adder/subtractor (pMAS) for the underlying field arithmetic, and leverage a more efficient yet compact scheduling of the Montgomery ladder algorithm. The implementation on the 7-series FPGA: Virtex-7, Kintex-7, and XC7Z020, yields 0.139, 0.138, and 0.206 ms of execution time, respectively. Furthermore, since our pMMM module is generic for any curve in Weierstrass form, we support multi-curve parameters, resulting in a unified ECC architecture. Lastly, our method also works in constant time, making it suitable for applications requiring high speed and SCA-resistant characteristics.
Silicon (Si) and salinity stress on the agronomic performances of bok choy (Brassica rappa L.) in an Entisols
Authors: Kharisun Kharisun , Budiono Mochammad Nazarudin , Prihatiningsih Nur , Noorhidayah Ratri , Lamorunga Ningsih
Published: January 2021

Silicon is a beneficial nutrient that has the potential to alleviate the abiotic stress of bok choy grown under salinity stress on entisols. Indonesia has wide areas of entisol soils along its coastline, which could be planted with bok choy. However, salinity conditions pose a problem in entisol soils. The objective of this research was to evaluate the effect of silicon on the agronomic performance of bok choy grown on an Entisols under salinity stress conditions. This research was conducted at the screen house of the Faculty of Agriculture, Jenderal Soedirman University, from May to August 2019. The experimental design was a completely randomized completely block design (RCBD) consisting of 16 treatments with three replications. The treatments comprised two factors: the dosage of silicon fertilizer, which was 0, 5, 10, or 15 g pot-1; and salinity stress, with a level of 0, 1, 2, or 3 dS m-1 pot-1. Observed variables included plant height (cm), number of leaves (strands), leaf area (cm2), fresh shoot weight (g), dry shoot weight (g), fresh root weight (g), dry root weight (g), fresh plant weight (g), and dry plant weight (g). The results showed that the provision of silicon (Si) fertilizer from zeolite and sugarcane bagasse compost (SCB) improved plant height, number of leaves, leaf area, fresh plant weight, and dry plant weight of bok choy plants under salinity stress conditions on entisol soil. At a silicon dosage of 10 g pot-1, fresh plant weight (production of bok choy) was 64.18% greater compared to the control. Increasing soil salinity up to 3 dS m-1 of soil decreased the plant height and number of leaves but did not significantly affect fresh shoot weight, dry shoot weight, fresh plant weight, dry fresh plant weight, fresh root weight, or dry root weight.
Characteristics of Inceptisols derived from basaltic andesite from several locations in volcanic landform
Authors: Muslim Rufaidah Qonita , Kricella Pronika , Pratamaningsih Mira Media , Purwanto Setiyo , Suryani Erna , Ritung Sofyan
Published: January 2021

The widespread of Inceptisols in Indonesia especially in volcanic landform has the characteristics potentially to be used as agricultural land. This study aimed to identify the characteristics of Inceptisols found in volcanic landform developed from basaltic andesite parent materials. Soil samples were collected in 6 locations. A total of 23 samples were taken from each horizon from 6 pedons for physical, chemical, and mineral analysis. The results showed that Inceptisols had different colors depending on land use and mineral content, but were dominated by yellowish brown to dark brown with hue 7.5YR to 10YR, color value varied from 2.5 to 4, and croma varied from 1 to 6. Base saturation varied from low to very high, cation exchange capacity varied from low to high. Soil textures were dominated by clay, clay loam, and sandy loam. Three pedons in Purwakarta, Bandung Barat, and Jember Regency, Java Island were dominated by weatherable minerals, while the others obtained in Seluma, Rejang Lebong, and Ogan Komering Ulu Selatan Regency, Sumatera Island were dominated by resistant minerals such as opaque and quartz. Physical, chemical, and mineral content can be used as a reference in soil management and recommendation for balanced fertilization.
Controls on the net dissolved organic carbon production in tropical peat
Authors: Nurzakiah Siti , Sutandi Atang , Sabiham Supiandi , Djajakirana Gunawan , Sudadi Untung
Published: January 2021

Soil factors such as pH and the presence of polyvalent cations can influence the net production of dissolved organic carbon (DOC). This study aimed to determine the main factors that control net DOC production. The study was conducted at Buatan Village, Siak Indrapura Regency, Riau Province, Indonesia. Soil and water sampling were done every month for a year observation, from July 2018 to June 2019. Soil sampling was carried out to determine the concentration of C-organic acids, pH, N, P, K, Cu, and soil water content (SWC). Peat water sampling was carried out using modified pore water sampling to measure DOC concentration. Groundwater level (GWL) and soil temperature were also observed. Multiple regression analysis was performed to find out the soil and environmental factors controlling the net DOC production. The results showed that the net DOC production fluctuated with seasonal changes and soil pH was a significant controlling factor (P = 0.035) and positively correlated (P = 0.040) to the net DOC production. In addition, N-mineral, PO4, and Cu were positively correlated with net DOC production (P-value: 0.026; 0.033; and 0.028; respectively) while C-organic acids and SWC were negatively correlated (P-value: 0.033; and 0.020; respectively). There was no correlation between net DOC production with GWL, soil temperature, and K concentration. This finding confirmed that pH was the main factor controlling the net DOC production and reflects DOC contribution to the solution acidity.
PRODUKSI BERSIH PADA HOME INDUSTRI DALAM RANGKA PENGENDALIAN PELESTARIAN LINGKUNGAN
Authors: Zakiyah Laila Farichatuz
Published: January 2021

Abstrak

Konsep produksi bersih (Cleaner Production) dicetuskan oleh United Nation Environmental Program (UNEP) pada bulan Mei 1989. UNEP menyatakan bahwa produksi bersih merupakan suatu strategi pengelolaan lingkungan yang bersifat preventif, terpadu dan diterapkan secara kontinu pada proses produksi, produk, jasa untuk meningkatkan eko-efisiensi sehingga mengurangi resiko terhadap kesehatan manusia dan lingkungan (Winardi & Susanti,2006). Penelitian dilakukan di Marcellina Silver Jl. Raya Celuk Sukawati Gianyar Bali pada tanggal 12 Mei 2018. Teknik pengumpulan data yang digunakan dalam penelitian ini berasal dari variable-variabel penelitian yakni produksi bersih (X1) dan pelestarian lingkungan (X2). Diperoleh dengan cara memberikan angket (kuesioner) kepada sampel penelitian (pengusaha) untuk diisi jawaban sesuai dengan pernyataan yang dibuat. Industri perak Marcellina Silver telah menerapkan produksi bersih dengan cara melakukan beberapa kegiatan seperti, mematikan kran air jika tidak digunakan dan mematikan lampu saat siang hari, menggunakan kembali bahan sisa produksi untuk dijadikan barang produk jadi dan juga melakukan perawatan atau maintenance pada mesin produksi sehingga dapat melakukan produksi dengan optimal.

Kata kunci : Industri Rumahan, Pelestarian Lingkungan, Produksi Bersih
REEVALUATION OF THE INFERRED RELATIONSHIP BETWEEN LIVING RHODOLITH MORPHOLOGIES, THEIR MOVEMENT, AND WATER ENERGY: IMPLICATIONS FOR INTERPRETING PALEOCEANOGRAPHIC CONDITIONS
Authors: O'CONNELL LAURA G. , JAMES NOEL P. , HARVEY ADELA S. , LUICK JOHN , BONE YVONNE , SHEPHERD SCORESBY A.
Published: January 2021

Free-living forms of crustose coralline algae (rhodoliths) accumulate on shallow-water marine shelves in many regions worldwide. They form their own benthic habitats termed ‘rhodolith beds' and their deposits are well preserved in the rock record. Characteristics of rhodolith deposits can be used to interpret ancient water depths, light levels, and water energies. Accurate paleoceanographic interpretations rely on large-scale, detailed studies of living rhodolith beds, but these studies are scarce. Spencer Gulf in South Australia has the largest living rhodolith beds in southeastern Australia (∼ 3,000 km2). Documentation of these rhodolith deposits includes facies analysis, coralline algal taxonomy, characterization of growth forms and morphometrics, and integration with oceanographic data. Extensive oceanographic data and hydrodynamic modeling enable comparisons between rhodolith morphologies and bottom water energies with unprecedented accuracy. Rhodolith deposits in the gulf are intermixed with carbonate sands and muds under diverse hydrodynamic conditions, with current speeds up to 1.04 m s−1. At least five coralline algal genera construct rhodoliths in Spencer Gulf. Growth forms include fruticose, lumpy, and warty. Rhodolith morphologies imply that water energy is not the only thing affecting rhodolith movement and growth; rhodoliths can also be shifted by fish and invertebrates. Linear regression models in this study evaluate relationships between rhodolith morphometrics (mean diameter, sphericity, and branch density) and maximum bottom water speeds in Spencer Gulf and their results support the idea that water energy is not a major control on rhodolith morphology under these water energy conditions. Previous studies have revealed that the relationship between rhodolith morphologies and water energy levels is complicated and many authors have cautioned to not rely solely on rhodolith morphologies to interpret paleoceanographic conditions. Results of this study demonstrate that accurate paleoceanographic interpretations cannot be made based on rhodolith morphologies alone, but should also include sedimentology, coralline taxonomy, and associated biota.
KONSTRUKSI SINTAKSIS KAIFIATUL IKHBAR DALAM AKAD IJAB KABUL PERNIKAHAN
Authors: Muchlish Huda Muhammad , Arifin Samsul , Ma’arif Miftakhul
Published: January 2021

In the context of composing Arabic sentences, the rules of kaifiatul ikhbar are included in the rules which are basic and foundation. The kaifiatul ikhbar rules are formed from the composition of the mubtada and khobar and are used in various forms of sentences, including the sentence structure of the marriage consent. Accuracy in pronouncing the kabul marriage license sentence including the arrangement of the preacher and khobar becomes important considering this kabul consent will be a legal requirement or cancellation of a marriage contract. This study attempts to analyze and present several forms of kabul mariage agreement and syntactic analysis, especially in the kaida of kaifiatul ikhbar. By using a library approach and linguistic analysis from its syntactic aspects, the results of this study indicate that there are 11 forms of kaifiyatul ikhbar with various syntactic analysis specifications. This shows that the form of kaifiatul ikhbar in the marriage contract is actually not only one forms, but with a variety of sentence forms
تحليل كتاب تعليم اللغة العربية بالمدرسة العالية الحكومية تمباكبراس جومبانج من وجهة النظر على ماكي
Authors: Mujib Ahmad , Masykur Afandi Muh.
Published: January 2021

The purpose of this study are to select the material, the gradations in the textbook, material presentation and material repetition in this book is presented well. The research method used is descriptive qualitative approach with macky theory and the type of researcher in the form of library research. While data analysis used analysis content according to Kilizirmak. The result of the study include: 1) the selection of material in Arabic textbooks MAN Tambakberas Jombang by Muhammad Ilyas has fulfilled the criteria. But in terms of material content there is no scope for sound, and in terms of meaning, no rhetoric is found, and other language fields, 2) gradations in the textbook are classified as simple with complicated material to the students' needs, 3) material presentation in this book it is well presented and with pictures that support, 4) the last material repetition in this book is well presented, but it needs to be included in a field where it is incomplete such as the flashing of views, stories, slogans, singing, etc.
نموذج بيئة اللغة العربية بمعهد الإرشاد سمارانج جاوى الوسطى إندونيسيا ودورها في اكتساب المهارات اللغوية
Authors: Said Mochamad Munawar
Published: January 2021

The Arabic language is the language of the world that Muslims use. Every person must teach Arabic in schools and universities, even though they have obstacles and problems that interfere without reaching the desired legitimate goal. Teaching the Arabic language has many difficulties, including the language itself, society, teacher, and learner. This research aims to know the model of the Arabic language environment at the Guidance Institute Semarang Central Java and its role in acquiring language skills. The researcher is based on the descriptive study. The method of data collection was conducted in a way of observation, interview and documents. As for the way to analyze the data using a descriptive analysis that deals with description and focus. And its results are the integrated environment that combines the artificial environment with the natural environment. As for its role, it is to create the linguistic atmosphere in the places that are in the school and the residence so that the teacher can fix the linguistic mistakes made by students and deepen the repetition and strengthening of the language that they got from the school and the residence and encourage their spirit and enthusiasm in applying the language