bluuebunny/crossref_metadata_2025_split huggingface dataset:
Teacher’s question in the stage of solution presentation and reflection problem-based learning for increasing valid relationship score on concept map
Authors: Untari S A , Widoretno S , Saputra A , Sajidan  
Published: June 2020

Abstract
The aim of the research is to measure the increase of valid relationship (VR) concept map (CM) scores using a teacher’s question in the stage of solution presentation and reflection problem-based learning. The research is a classroom action consisting of pre-cycle, cycle I, and cycle II. The research procedure included planning, implementing actions, observations, and reflecting on 36 high school X grade students. The research data was VR scores calculated based on expert CM, supported by syntax implementation and performance assessment. Validation of data used triangulation methods which confirmed VR scores with documentation and interviews. The data analysis used data reduction, data presentation, and conclusion. The results showed that the number of students who has an increase in VR scores in linear, trend, and fluctuating fashion as follows: 44,44%; 22,22%; and 33,33%. The teacher’s question in the stage of solution presentation and reflection increased VR scores, therefore the teacher can apply the action to train student’s ability to connect concepts in class.
The certainty of Response Index (CRI) and scale of honesty to identify student misconceptions
Authors: Firmasari S , Nopriana T 
Published: June 2020

Abstract
Research related to the identification of misconceptions has been carried out by some researchers, notably using the CRI scale (Certainty of Response Index). But there were no results that underline misconceptions by using a scale of honesty. This study aimed to identify misconceptions on relations and functions at Basic Math Capita Selecta subject using CRI and Honesty Scale. The study used survey methods, the instrument used was a questionnaire scale CRI, honesty scale questionnaire and interview guidelines. The results showed that: 51,32% student understand the concept; 12,63% high guess element of the correct answer; 16,32% are misconceptions; and 19,47% did not know the concept. Based on the results of the honesty scale which was strengthened by interviews, it is shown that students were wrong in understanding the concept of the relation of functions for a one-to-one correspondence between two sets, and wrong in determining the function of the graph. With the results of this identification, enables teachers to provide reinforcement for students who were still weak at a concept to provide a review of the material.
Effectiveness in mathematics learning with the problem solving approach in vocational high school
Authors: Sriatun  , EkoHariadi  , Sondang Meini , Winanti Titiek , Ismayanti Euis , Nurlaela Luthfiyah 
Published: June 2020

Abstract
Creative teachers are the key to the success of vocational learning in the XXI century. One of the learning models applied to vocational learning is a problem solving or problem solving learning model. The purpose of this study is to describe the effectiveness of vocational mathematics teachers in the learning process with problem solving models in terms of their application, as well as an overview of problem solving skills of vocational high school students. The main instrument of this study was the research themselves assisted with problem solving questions, questionnaires and observation sheets. The results showed that the aspects of learning planning preparation had shown to be effective, but there were still less effective indicator, namely the preparation of worksheet and the use of teaching aids. The category of problem solving abilities of vocational high school students in understanding the problem on average is quite good. But the indicator verifies the results of the answers including the less category.
The effectiveness of conventional and inquiry learning methods in improving student learning achievement
Authors: Wulandari T , Kartowagiran B 
Published: June 2020

Abstract
The aims of this study are to find out: (1) student learning achievement taught by the Inquiry method, (2) student learning achievement taught by Conventional methods, (3) differences in student learning achievement taught by the Inquiry method and student learning achievement taught by Conventional Method. This research is a quasi-experimental research. The population of this study was all students of class X of the Islamic Senior High School in Kabanjahe, totaling 179 students. The sample of this study was students of class X-2 consisting of 37 students. The instrument in this study was a multiple choice test that was carried out before learning (pre-test) and after learning (post-test). Based on the results of the t test, found that t count > t table ( 4.924> 1.667), there was a significant difference in students’ mathematics learning achievement. Mathematical learning achievement of students using the Inquiry Method is greater than student learning achievement using Conventional methods.
Structural Transformation of The West Java Economy and Its Agriculture
Authors: Sulistyowati Lies , Novitasari Riska , Trimo Lucyana 
Published: June 2020

Abstract
The role of the agricultural sector in economic development in West Java is not only seen from the production and employment, but also from its contribution to the formation of the GRDP. However, the development of economic growth in West Java has changed from year to year, including the agricultural sector where there is a shift in the share of output value which causes a decrease in the contribution of the agricultural sector without causing a decline in the value of output from the sector. This study aims to examine the shift in the agricultural sector in the economy in West Java. This study uses a quantitative descriptive method with secondary data in the form of national GDP data and West Java Province GDP according to business in 2013-2018 based on constant 2010 prices. The results of this study indicate that the growth of the agricultural sector in West Java is positively influenced by national economic growth. Growth in the agricultural sector is relatively slow and has no competitive advantage, with a change rate of 2.80 percent. In addition, the agricultural sector in West Java also does not specialize in location effects, except in the food crops and horticulture subsectors.
Estimation and Correlation of Surian Leaves (Toona Sinensis) Weight with the Tree Parameters
Authors: Lastini Tien , Hernawan Endang , Rosmiati Mia , Putra Ramadhani E , Rahmayunita Ira 
Published: June 2020

AbstractLeaves of surian tree (Toona sinensis) based on the research, can be used for medications, such as diabetes, cancer, and others. At the present the people is being switched from chemical drugs to herbal medicines. Therefore, surian leaves is one source of herbal medicine to be developed in the future. However, information of leaves biomass in each tree relating to ages and tree parameters is unknown. This study aims to determine the weight of surian leaves on each tree and to examine the relationship of leaves weight with several tree dparameters. The study was conducted on private forests in Sumedang District. The sample of 110 trees were taken purposively. Tree parameters were measured, namely: Diameter Breast Height (DBH), total height, timber height, crown height, crown diameter, age, and leaves weight of each tree. The results of the correlation analysis showed that there was a significant relationship between four parameters of the tree, namely DBH, total height, crown height, and crown diameter with surian leaves weight. The highest correlation with the weight of surian leaves is DBH, amounting to 0.75. Estimated weight of leaves in DBH 10-19 cm is 8-11 kg/tree. Whereas for DBH above equal to 20 cm is 18-23 kg/tree.
Growth and yield responses of three accessions of Centella asiatica grown in lowland under varied watering intensities
Authors: Wulandari S , Widyastuti Y , Pardono  , Yunus A 
Published: June 2020

Abstract

C. asiatica presented the best vigor when planted at an altitude of 2500 meters above sea level. Drought is the main environmental stress in C. asiatica cultivation. The objective of this study was to determine which accession of C. asiatica that grows and produces optimally under stressed conditions since no known accession can grow optimally with various drought stresses. The study conducted in a screen house, Jumantono, Universitas Sebelas Maret Surakarta, from 4 May to 5 August 2019. The research used a completely randomized design with a variety of C.asiatica accessions (accession 1, 2 and 3) as the first factor and variety of watering intensities (once a day, once every two days, once every three days, and once every four days) as the second factor. The results showed that there was an interaction between accessions and watering intensity only on the number of tillers. Accession 1 was a drought-tolerant accession because it grew optimally in almost all variables. Watering intensity once a day was the optimum treatment for C. asiatica growth.
The Feasibility of Gedong Gincu Mango (Mangifera indica L) Agribusiness by Using Off - Season Technology
Authors: Umyati Sri , Dinar  , Castini  
Published: June 2020

AbstractGedong gincu mango is a local commodities in Majalengka. The limited supply of Gedong gincu mango as the leading local commodity in Majalengka Regency in off season has influence on demand and income of the farmers. Research to assess the feasibility of the gedong gincu mango agribusiness was conducted using quantitative descriptive methods. The data was collected through a survey using a questionnaire and involved 31 respondents. The observed variables were income and farm analysis with R/C ratio for one season. The results showed that the agribusiness gedong gincu mango in the off season was able to provide an income of Rp. 13.405.860,- (± 100% higher than high season) with an R/C ratio of 1.30. This finding confirms that the off-season Gedong Gincu mangoo agribusiness could increase farmers’ incomes significantly.
Hot Water and Sulfuric Acid Solution for Increasing The Viability and Vigor of Indigofera (Indigofera zollingeriana)
Authors: Fahmi Z I , Purwanto E , Purnomo D 
Published: June 2020

AbstractIndigofera (Indigofera zollingeriana) is a multi-benefit plant, two of them are for natural dyes and livestock feed supplement. Indigofera seeds are hard and thick-coated so that the germination percentage is low and not grow in simultaneously. This study aimed to obtain an effective and practical method of increasing seed viability and vigor was carried out from March to May 2019 at the BBTP Central Java. The research used a completely randomized design, consisted 9 treatments(control, soaked in hot water by 80 and 100°C then leave it for 24 hours, and soaked in a solution of H2SO495% for 10, 20, 30, 40, 50 and 60 minutes) and 4 replications. The germination method used the top of paper with filter paper media. The results showed that soaking the seeds in hot water and sulfuric acid solutions significantly increased germination, maximum growth potential, vigor index, and growth rate. Soaking seeds in a 95% H2SO4solution for 10 minutes increased the germination of the seeds (84%), maximum growth potential (91%), vigor index (69%), and growth rate by (13.81% etmal−1). The finding concludes that the best treatment was soaking seed in H2SO4solution for 10 minutes, and longer soaking time (> 50 minutes) will decrease all parameters.
Efficiency of Production Factors and Constraints of Organic Rice Farming at Rainfed Rice
Authors: Noormansyah Z , Cahrial E 
Published: June 2020

Abstract
This study aims to determine the efficiency of the use of production factors and the constraints of organic rice farmers in rainfed rice (whose irrigation depends only on rain). The research method used was a case study with 45 farmers as respondents. The level of efficiency of the use of production factors is calculated using Cobb Douglas method and the constraints in the implementation of organic rice farming are analyzed in a descriptive manner. The results showed: 1) Simultaneously, the factors of production used had a very significant influence on organic rice production. Partially, land production factors have a positive and very significant effect, while the factors of production of biological fertilizers and vegetable pesticides have a significant effect on organic rice production. Biological fertilizers are negative while plant-based pesticides are positive. Factors of production that do not significantly affect organic rice production are seeds, organic fertilizer, compound fertilizer, and labor. 2) Factors of land production and vegetable pesticides have not been efficient. While the factors of seed production, organic fertilizer/manure, liquid organic fertilizer, compound fertilizer, and inefficient labor production factors. 3) The major obstacle in the application of organic rice farming in the rainfed rice is the provision of production facilities, with a percentage of 37.80 percent, followed by the role of supporting institutions 34.52 percent.
Morphological Study Of Rumput Mutiara (Hedyotis corimbosa L) From Various Locations In Central Java
Authors: Iswahyudi  , Samanhudi  , Yunus Ahmad , Widyastuti Yuli , Suryanti Venty 
Published: June 2020

Abstract
Indonesia is a country rich in medicinal plants such as rumput mutiara (Hedyotis corimbosa L). To find new sources of medicinal plants as well as trying to cultivate them, rumput mutiara was chosen as study material. To be able to carry out intensive cultivation, morphological studies of the rumput mutiara are needed. Differences in body morphological characters were analyzed using the Statistical Analysis System (SAS) of the third height at different locations. The SAS results showed that the parameters of root length, plant height, segment length, stem diameter, number of branches, leaf width, leaf length and flower stem length showed significant differences between treatments (height). Furthermore, P2 (altitude treatment between 201 to 400 meters above sea level) shows the highest results compared to other treatments.
Chitosan And Composition Media For Improving The Growth Of Seed Sawo (Achras zapota L)
Authors: Yuniastuti Endang , Fiqri Taufiq , Nandariyah  , Indah Delfianti Marshelina Noor 
Published: June 2020

Abstract
The optimal Sapodilla plant is cultivated as a garden plant to enjoy the fruit and the fruit tree is also long-lived. The duration of the brown seed germination (generative) is the influenced by the hard nature of the seed coat so that it is difficult, to penetrate water and oxygen and cause dormancy to occur. The research aimed to determine the effect of immersion with chitosan as a growth regulator and planting media for the effectiveness of the growth sapodilla seeds. The experiment arranged factorially using Randomized Complete Design (RCD) and provided with 3 replication. The treatments consisted of 4 levels of planting media and 4 levels of chitosan concentration. The results revealed that germination of sapodilla were not influenced significantly by chitosan concentration and the media composition. Even though, there was a tendency that germination and the growth of treated seeds with 4 mLL of fitosan were relatively better than control. In addition, the media composition (1;2;1) resulted the relative better of seed growth.
Innovationto speed up the Developmentof Rose Picking Agro-Tourism in Gunung Sari
Authors: Ismail AgusYadi , Nainggolan Mai Fernando , Turnip Arjon 
Published: June 2020

Abstract
Rose picking agro-tourism development playsa significant role in increasing the welfare of famers or rural community. The research of innovation to accelerate the development of RPA was conducted from traditional to modern agro-tourism in Gunung Sari. The approach of The quantitative and qualitative was used by determining 30 respondents purposively using the saturated sampling method. The results showed that the farmers managing the agro-tourism picking roses had gone through the processes of knowledge, persuasion, decisions, implementation, and confirmation before adopting innovation. The factors that influence the farmer implementer in adopting innovation in the development of rose picking agro-tourism are the age and frequency of farmers participating in counseling.
The Prospective Use of Essential Oil from Herbs as Feed Additive for Laying Poultry: A Review
Authors: Widodo E 
Published: June 2020

Abstract
Entering the era of AGP replacer has made researchers to find alternative products which are comparable to AGP. Some attempts have been made, but it seems the use of herb essential oil (EO) to be very prospective. Some commonly used herbs products evaluated are for example cinnamon, aniseed, olive and oregano. The products are often used in the form of essential oil mixture (EOM) rather than single product. This paper aimed to review the utilization of herb EO and ground herb containing EO toward poultry laying performance. The mechanism of action related to antimicrobial action assessed toward the possible improvement in laying performance. It is concluded that the use of herb EO and ground herb containing EO might replace the use of AGP, but it should be carefully done, because the success in improving laying performance is influenced by the type and dose of herb EO and ground herb containing EO used in the feed.
Relationship among Body Weight, Scrotal Circumference and Sperm Quantity of Bali Bulls in Baturiti Artificial Insemination Center
Authors: Indriastuti R , Ulum M F , Arifiantini R I , Memili E , Purwantara B 
Published: June 2020

Abstract
Bali cattle are one of the native cattle breeds in Indonesia as a meat producer. The objective of this study was to analyze the correlation between body weight and scrotal circumference and sperm quantity of Bali bulls. To accomplish this objective, primary and secondary data of Bali bulls in Baturiti Artificial Insemination (AI) Center, Bali from 2017 to 2019 were used in this research, consisted of scrotal circumference (SC), body weight (BW), semen volume (SV) and sperm concentration (SCon) (n = 9 bulls in productive age). Total Number Sperm (TNS) was calculated multiply value of SV and SCon. The data were analyzed statistically using Correlation Pearson Square. There was no significant correlation among body weight, scrotal circumference, and sperm quantity of Bali bulls in this research (P>0.05). Low positive correlation was found between BW with SC (0.296), very low positive correlation with SV (0.049), very low negative correlation with SCon (−0.089) and moderate positive correlation with TNS (0.427). Moreover, SC showed low negative correlation with SCon (−0.202), very low negative correlation with SV (−0.028) and low positive correlation with TNS (0.286). In conclusion, BW showed positive correlation SC, SV and TNS, but showed a negative correlation SCon. SC had positive correlation with TNS but they showed negative correlation with SV and SCon of Bali bulls.
Evaluation of Friesian Holstein Bulls Fertility in Lembang and Singosari Artificial Insemination Center using West Java ISIKHNAS Data
Authors: Rosyada Z N A , Tumbelaka L I , Ulum M F , Harsi T , Herwiyati E , Memili E , Purwantara B 
Published: June 2020

Abstract
Friesian Holstein bull (FH) is one of dairy cattle in Indonesia. It is important to increase the production of dairy cattle to meet the need for milk consumption. The way to develop is through artificial insemination (AI). This study was aimed to evaluate the FH bull fertility by calculating the percentage of first service conception rate (%FSCR) of FH bulls in Lembang and Singosari AI Center using ISIKHNAS data in West Java for the year 2017 until 2018. The data included in this study after editing consisted of AI data (n=141176) and service records as well as pregnancy diagnosis information (n=98120). The study showed that the FH bull semen spread in West Java mostly from Lembang and Singosari AI Center. The fertility rate can be grouped into high fertile (HF), and low fertile (LF) level and also divided into two groups based on the number of AI services. The %FSCR of FH bulls semen that used for AI <1000 services in Singosari 64.29% as HF level; 22.22% as LF level, while in Lembang had 74. 03% as HF; 21.15% as LF level. Then, the AI> 1000 services in Lembang had %FSCR is 61.61% as HF level; 35. 28% as LF level. While Singosari had 63.11% as HF level; 33.78% as LF level. In conclusion, the FH bulls in Lembang and Singosari AI center had the HF of the %FSCR is about 53.13 until 74.03%. It is needed the more accurate assessment through genomic analysis to get the biomarker of HF bulls as a suggestion to improve the FH breeding cattle.
Effect of Sericin Supplementation in Collection Medium on Bovine Oocyte Nuclear Maturation
Authors: Satrio F A , Karja N W K , Setiadi M A , Kaiin E M , Gunawan M , Memili E , Purwantara B 
Published: June 2020

Abstract
Sericin is a water-soluble globular protein derived from silkworm Bombyx mori and has the competency as an antioxidant. This study was conducted to examine the effect of sericin supplementation in the collection medium on bovine oocyte nuclear maturation. Sericin with different concentration (0 (control), 0.1 %, 0.5 %, and 1%) was added to collection medium and maturated for 24 hour at 38.5 °C in 5% of CO2 air. Matured oocytes were stained with acetic-orcein and determined the oocyte nuclear stage under a stereomicroscope. After in vitro maturation, 74-87% of oocytes were reached nuclear maturation (metaphase II). The maturation rates of oocytes were significantly higher at 0.1% group (87.7%) (P<0.05) compared to other groups. There was no significant differences were observed between control group (74.6%), 0.5% group (79.4%), and 1% group (78.3%) (P>0.05). These findings showed that supplementation of 0.1% sericin in the collection medium improved the nuclear maturation of bovine oocytes.
The Effect of Supplementation of Leucaena leucochepala Leaves on Digestibility of Dry Matter and Organic Matter in Friesian Holstein Dairy Cows Rations
Authors: Nugroho D F , Suranindyah Y Y , Astuti A 
Published: June 2020

Abstract
The study was conducted to measure digestibility of dry matter and organic matter in Holstein Friesian cow ration which was supplemented with Leucaena Leucocephala leaves. The experiment was designed followed completely randomized design, consisted of 3 treatments, namely P0, P1 and P2 with 4 replications. Treatment P0 was basal ration, composed of 35% forage + 65% concentrate of total dry matter. Treatment P1 and P2 contained basal ration supplemented by Leucaena Leucocephala leaves as much as 10% and 20% of total forage dry matter, respectively. The data on dry matter, organic matter digestibility and nutrient consumption were collected during 14 days. The results showed no significant different of dry matter, organic matter, crude fibre digestibility among rations. Dry matter, organic matter, crude protein, and crude fibre of ration P1 and P2 were higher than P0. In conclusion, there was no effect of Leucaena Leucocephala leaves supplementation on dry matter and organic matter digestibility of ration but increased the consumption of dry matter, organic matter, crude protein and crude fiber.