bluuebunny/crossref_metadata_2025_split huggingface dataset:
Method EWMA (Exponentially Weighted Moving Average) as a Filter to Fine and Remove Noise on Time Series Data
Authors: Andrasto Tatyantoro , Ristanto Riska Dami , Sukamta Sri , Aufa Agung , Hafidz Choirozyad Muhammad , Sandyawan Bernadus , Alfarisi Ahmad Faisal 
Published: June 2023

Abstract
The Moving Average method is the most common filter in Digital Signal Processing, the Moving Average method is optimal for reducing unstable value fluctuations due to interference by maintaining accurate readings. Therefore it is often used for signal coding in the context of time (Smith, 1999). The kind of moving average method is the Exponentially Weighted Moving Average (EWMA) which is often applied to a time sequence of random variables, by calculating the weighted average of the sequence by applying a weight that decreases geometrically with the length of observation (Perry, 2011). this method can be applied to tools/instruments that use data continuously in a certain time so that it will require a filter so that the fluctuations in the data are not extreme which will result in changes in the output response being softer so as not to damage the device on the output. This study uses the EWMA method to eliminate noise in the processing of sensor readings. The results of the study, the system is able to monitor realtime ph and temperature data. In fish farming, measuring and monitoring water temperature and ph is important, if it is not regularly measured and monitored it can cause various problems such as pH and temperature that are not optimal for fish growth and health. The research method to be carried out is R&D, EWMA will be applied to a multi-sensor circuit then processed by a data logger device to then be displayed on serial data on its output.
The Bearing Capacity Analysis of Deep Foundation based on In-situ Dynamic Penetration Test Compared to Pile Driving Analyzer (PDA)
Authors: Sari Undayani Cita , Mirza Abdillah Pratama M. , Atpriyanti Dinar Nurina , Negoro Narendra Aji 
Published: June 2023

Abstract
On road/ bridge construction, foundation stability analysis is carried out by reviewing the bearing capacity. At the planning stage, this aspect can be calculated based on empirical and numerical methods using In-situ Dynamic Penetration Test data. Meanwhile, at the implementation stage, the bearing capacity results are checked using Pile Driving Analyzer (PDA). Hereinafter, the bearing capacity result in the field is compared with the bearing capacity result at the planning stage whether they are appropriate or not. In this study, the results of bearing capacity based on empirical using Meyerhoff and Schmertmann and numerical methods using MIDAS GTS NX were compared with the results of the PDA test. This study takes an overview of the Semarang – Demak Toll Road Development Project Package 2 STA 16 + 075. The analysis was carried out based on three STA points. The results obtained show that the largest deviation value is when the PDA result is compared with the Schmertmann method, which is 0.59 and the smallest deviation is when comparing PDA with MIDAS 0.03. Both deviations are located on P 133F STA 16+711. This different deviation is due to the ultimate bearing capacity analysis based on empirical equations that only analyze single piles based on the original soil properties, while the MIDAS analysis also considers pile parameters and interface parameters. Moreover, in the PDA test, there are factors of environmental conditions.
The quality of Jatropha leaf ecoprint products using steaming and pounding techniques
Authors: Nurmasitah Sita , Sangadah Siti Fatonati , Musdalifah  
Published: June 2023

AbstractA new technique in textile coloring, namely the ecoprint dyeing technique, has emerged which further proves the development of the textile industry. There are several techniques of ecoprint which are steaming technique, pounding technique and boiling technique. To produce a good eco print color, one must consider the ecoprint coloring technique, the type of textile material used, the type of mordant substance, the mass of the mordant substance, and the length of the coloring process. Mordant alum is more widely used as a fixator because it is easier to obtain and more affordable. Meanwhile, one of the natural coloring substances that can be used as natural dye is Jatropha leaves (Jatropha curcas L.). Researchers then further revealed the use of Jatropha leaves to color the textile because it has the potential to be used as natural fiber-based dyes for textiles. The independent variable used in this study is the ecoprint technique, including steaming (X1), pounding (X2), and boiling (X3). Meanwhile, the dependent variable is the quality of eco prints results with indicators including: colors difference and darkness. The data analysis method used in this research is descriptive and inferential statistics. The dyeing process on cotton cloth using alum fixation treatment and the bottom pounding method resulting the highest color darkness compared to other coloring methods. The bottom pounding method produces the darkest color. Statistical results of ANOVA test showed that there was a significant effect on the test results.
Travel Route Selection Model After the Operation of the Semarang-Demak Toll Road
Authors: Fahrenza Mohammad Fadhil , Arizky Erza Refitama , Ismiyati Ismiyati , Wicaksono Y I 
Published: June 2023

Abstract
The highway is an infrastructure that is very supportive for the movement of community activities. So that the government develops a road network specifically in the Java area in the form of the Semarang-Demak toll road construction. The purpose of this study is to obtain a route choice model that can explain the probability of road users choosing toll roads, and to estimate the sensitivity of route choice if there is a change in its attributes. The stated preference questionnaire was used as a medium to obtain primary data. This study uses two variables: the difference in toll rates and the difference in travel time. The survey results were processed using the binomial logit model. Regression analysis using SPSS program to obtain the utility function. The model results obtained are Utol – Unontol = -5.813 - 0.000727(X1) + 0.251(X2). The results of the utility calculation are used to obtain the probability value of choosing a travel route. If the toll rate remains or does not change, the probability of respondents to use the toll road will be greater. On the other hand, if there is an increase in toll rates, respondents tend to choose to use the national road
Multi-criteria Genetic Algorithm Optimization Approach for Balancing Bicopter Control
Authors: Apriaskar Esa , Prastiyanto Dhidik , Manaf Akhyar Abdillah , Amelia Ilya , Fahmizal  
Published: June 2023

Abstract
Efforts to find the best controller for stabilizing a flying vehicle have been widely developed in recent years. This work aims to join the development track by exploring the use of genetic algorithm (GA) to find the most optimum controller parameter considering settling time and overshoot criteria. Roll attitude control of a balancing bicopter was chosen as the applied plant to confirm the designed method. The controller structure applied in this research is an ideal proportional-integral (PI) controller. Two equations considering the highlighted criteria for the objective function of the GA were developed with one of them involving integral absolute error (IAE) (MCIAE-GA), and the other one does not (MC-GA). Two GAs with both equations were compared to ziegler-nichols and the one with a standalone IAE (IAE-GA). The test results confirm that the proposed MC-GA and MCIAE-GA outperform the comparative controllers at their best performance by keeping the settling time as small as possible without overshooting. Despite the latter showing a slightly faster settling time, the former has better repeatability given a smaller standard deviation for Kp and Ki parameters with a mere 0.0820 and 0.0980, respectively.
The Effect of Opak Fault on Liquefaction Potential at Toll Road Construction in Klaten Regency, Central Java
Authors: Yulianisa Y , Hardiyatmo H C , Faris F 
Published: June 2023

Abstract
The activity of the Opak Fault on May 27th, 2006, caused a strong earthquake of Mw 6.3, then known as the Yogyakarta Earthquake. Previous studies have shown that several damages during the earthquake were caused by liquefaction. This paper aims to determine potential liquefaction hazards at toll road construction in Klaten Regency, within less than 10 km of the Opak Fault. The liquefaction potential was analyzed from Standard Penetration data using the simplified procedure to determine the safety factor and Liquefaction Potential Index by Iwasaki et al. (1981). In addition, vertical displacement caused by liquefied soil was calculated using the equation developed by Yoshimine et al. (2006). Based on the analysis of the liquefaction potential of 10 boreholes, the results showed that liquefaction occurs at 6 boreholes, with a high to a very high level of liquefaction potential index with a maximum horizontal acceleration of at least 0.46g. The extensive ground surface damage potentially occurs at 2 boreholes, with the vertical settlement of 32.55 cm and 47.02 cm, which occur at the nearest site distance to Opak Fault.
Effect of Contact Time on The Adsorption Process of Activated Carbon from Banana Peel in Reducing Heavy Metal Cd and Dyes Using a Stirring Tub (Pilot Scale)
Authors: Wahyuhadi M E , Kusumadewi R A , Hadisoebroto R 
Published: June 2023

Abstract
One of the most successful processes for extracting, recovering, and recycling metals from wastewater is adsorption utilizing natural activated carbon, such as banana peel waste. This is advantageous for a wastewater treatment sector since natural activated carbon is less expensive than conventional activated carbon. The aim of this research is to determine the optimum contact time at removing heavy metals and colour using a stirrer tub (pilot scale). Physically, banana peels would be burned at a high temperature of 300°C, and chemically, they would be activated with a 20% sulfuric acid (H2SO4) solution. A mixing tank with a volume of 30 L and a stirring machine spinning at 200 rpm was employed as a contact point between wastewater and activated carbon. Time variations of 15, 30, 60, 75, and 90 minutes were explored to find the best contact time. The ideal circumstances for 75 minutes obtained a Cd metal removal effectiveness of 98.63% with an adsorption capacity of 0.38 mg/g, according to the findings. At the optimum time of 90 minutes, the kepok banana peel was 97.38% successful in absorbing the color using a stirrer.
Study optimization cement content of cement treated base (CTB) using compressive strength parameter
Authors: Priastiwi Y A , Sukamta  , Hidayat A , Hafidz M , Widyandika R , Wiguna E 
Published: June 2023

Abstract
Cement Treated Base (CTB) is a foundation layer (base course) on flexible pavement and the development of a soil-cement foundation commonly used in construction that receives high loads. Generally, CTB is a combination of coarse aggregate (split), fine aggregate, cement, and water with zero slumps. The purpose of this study was to determine the optimum cement content of the CTB mixture with variations in the cement content of 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, and 5.5% of the dry weight of the aggregate and the effect of cement content on the compressive strength of the resulting CTB. Experimental research in the laboratory with 15/30 cm cylindrical specimens was carried out and analyzed. The results showed that the optimum CTB for the material used in this study was 3.75% which was obtained through the graph of the relationship between compressive strength and cement content, and from all variations of cement content made the cement content of 4% with a compressive strength of 54.21 kg/cm2 that meets the general specifications of 2018 Highways, namely 45 – 55 kg/cm2.
Utilization of corncob waste as bioethanol raw material by activities of Dekkera Bruxellensis and Saccharomyces Cerevisiae
Authors: Arby A Q A , Rinanti A , Wijayanti A , Marendra S M P 
Published: June 2023

Abstract
Corncob waste is not managed properly has the potential to environmental pollution. The purpose of this reasearch is to utilize corncob waste as a potential biomass into bioethanol. Process of making bioethanol is carried out in 4 steps, namely delignification, hydrolysis, fermentation, distillation. Corncob as substrate were prepared mechanically to become size powder 40 mesh. Delignification by fungi Dekkera Bruxellensis was varied with substrate ratio of 5, 10, and 15 grams at contact times of 3, 5, and 7 days. Hydrolysis with 2% sulfuric acid (H2SO4) at contact times of 30, 45, and 60 minutes. Glucose concentration was measured uing 3, 5-dinitrosalicylate (DBS) method. Variations of fungi:ragi = 1:1 at contact times of 3, 5, and 7 days. Distillation at temperature of 78°C using Gas Chromatography–Mass Spectrophotometry (GC-MS). This result in optimum delignification at substrate variation of 5 grams at contact time of 7 days, with a lignin removal 20,72%. The optimum glucose concentration in hydrolysis produced 7,561 g/L glucose at 2% Sulfuric acid (H2SO4). The highest ethanol content of 2,95% occured in ratio fungi:yeast 1:1 with substrate of 5 grams during 7 days. Based on pilot scale calculation with diameter 1,9 m and height of 0,9 m, then for 100 kg of corncobs can be produce 4,133L total ethanol.
Bio Oil Production from Multi-Feed Stock Biomass Waste and The Upgrading Process for Quality Improvement - Mini Review
Authors: Prasetiawan H , Hadiyanto  , Fardhyanti D S , Fatriasari W , Chafidz A , Rakasiwi A G , Kaja Y V , Rahma N F , Laili I R 
Published: June 2023

Abstract
Bio-oil is an environmentally friendly liquid fuel produced from the condensation of vapor product of pyrolysis process. Bio-oil has higher calorific value compared to other oxygenated fuels (such as methanol), but its calorific value is still lower than diesel and other light fuel oils. Bio-oil can be used directly as fuel; however, it has several characteristics that adversely affect high-tech machines. Bio-oil is corrosive since it has a high acidity level, unstable at room temperature due to the high content of oxygenate compounds and has a low higher heating value (HHV) due to its high water content. Therefore, an upgrading process is needed to improve the quality before it can be further processed into liquid fuel and chemicals. Meanwhile, the raw material for bio-oil also varies, not only using single feedstock but also using mixed feedstock. However, studies on mixed bio-oil raw materials are still very limited. Thus, it is possible to study the process of producing bio-oil from a mixture of biomass waste using the catalytic pyrolysis method and improve the quality of bio-oil through the collection of phenolic compounds using the extraction process.
Simulation of Esterification-Transesterification of Waste Cooking Oil to Produce Biodiesel using Ultrasound Assisted Integrated Double Column Reactive Distillation
Authors: Kusumaningtyas R D , Budiono Y W P , Kusuma A D H , Prasetiawan H , Ardiansyah H , Hidayat M 
Published: June 2023

AbstractThere are some problems arising related to the utilization of fossil-based fuel due to the diminishing of oil reserves. Therefore, energy transition toward the development of new and renewable energy has been set in Indonesia. Biodiesel is a promising renewable energy resource which can be synthesized from vegetable oils as feedstock via transesterification reaction. Waste cooking oil (WCO) is among the economical and abundant raw materials for biodiesel production. It contains triglyceride and free fatty acid (FFA) of 78.16% and 21.84%, respectively. Biodiesel preparation is generally carried out using conventional batch or continuous mixed flow reactors. This configuration encounters challenge related to the high cost for setting up the separation process. To overwhelm this drawback, it is essential to develop reactor which integrates the reaction and separation process. In this work, a novel design of Ultrasound Assisted Integrated Double Column Reactive Distillation (UAIDCRD) was introduced and simulated for biodiesel preparation through a coupling esterification-transesterification reaction. The first column was applied the esterification of Simulation of UAIDCRD for biodiesel production was conducted using ASPEN Plus v10. Model thermodynamic selected for the simulation was UNIQUAC. Sensitivity analysis was performed to examine the effects of reflux ratio, bottom to feed ratio, and methanol to oil ratio on the reaction conversion. Reflux ratio was studied at the range of 0.5 - 200, bottom to feed ratio was evaluated at the range of 0.25 - 0.9, and methanol to oil ratio were 1:3 - 9:8. It was observed that 99.99% reaction conversion in the esterification column was achieved with the reflux ration, bottom to feed ratio, and methanol to oil ratio of 0.5, 0.5, and 4.1, respectively. On the other hand, 99.99% reaction conversion in the transesterification column was obtained with the reflux ration, bottom to feed ratio, and methanol to oil ratio of 0.5, 0.5, and 3:1. The alcohol needed for the esterification and transesterification reaction were much lower than those required for the reaction using conventional reactor.
Environmental Impact Assessment of Steel Production in Indonesia : A Case Study
Authors: Alyarahma Syifa , Sari Indah Permata , Kurniawan Wawan 
Published: June 2023

Abstract
One of the biggest energy consumers and CO2 emitters in the world is the steel sector. With the growth in infrastructure construction, steel output has risen year over year. Therefore, a life cycle assessment of inputs and outputs at each stage of the steel manufacturing process is necessary to enable the adoption of life cycle management and offer sustainable production and consumption. The Life Cycle Assessment method is employed in this study to assess the environmental effects of steel manufacturing in Indonesia. The CML-IA baseline method, which assesses several impact categories including global warming, ozone layer depletion, acidification, and eutrophication, and others impact was used in this study and SimaPro 9.2 software was used to calculate the environmental impact of steel production. According to the findings, the largest contributors to the overall impact are the electric arc furnace, rolling mills, ladle furnaces, which use chemicals, and reheating furnaces, which use LPG. The entire impact of the steel manufacturing process on global warming, using a functional unit of 1 ton steel, is 1215.17 kg CO2 eq, of which the Electric Arc Furnace (EAF) contributes 477.37 kg CO2 eq, or 39% of the total CO2 emissions. Based on these findings, an effort is therefore required to reduce the consumption of fuel in the reheating furnace as well as electricity in the EAF and rolling mills.
Determination of the optimum organic coagulants dosage in tofu industrial wastewater treatment
Authors: Aphirta S , Ratnaningsih R , Hadisoebroto R , Yusuf A M , Gantara H 
Published: June 2023

AbstractThe research aim was to analyze the optimum dosage of moringa seed and tamarind seed as an organic coagulant in removing tofu wastewater pollutants using coagulation, flocculation, and sedimentation reactors. The first step is the manufacture of coagulant by processing the organic coagulant raw materials into powder and filtered using a 50 mesh filter and dried. The second step is to determine the dosage of coagulant using 4 variations of pH 5,6,7,8 using NaOH solution, and coagulant dosages obtained 2,3,4,5 gr/L. The third stage is an experimental test using the squenching batch reactor (SBR) method with TSS and COD parameter analysis. The effects confirmed that the coagulant of moringa seed had better ability than tamarind seed in removing TSS and COD, with the highest percentage reduction in TSS and COD at 3 gr dose of moringa seed. In addition, removal of TSS and COD using moringa seed or tamarind seed as coagulant was the most optimum at neutral pH 7-8. However, the treatment of tofu wastewater using either moringa seed or tamarind seed as coagulant using the coagulation-flocculation-sedimentation method in one reactor is not able to remove pollutants to meet the quality standards, so further treatment is needed.
A commentary update on NICE CG124. Hip fracture:management (2023)
Authors: Ong Terence , Vindlacheruvu Madhavi 
Published: June 2023

Abstract
The National Institute for Health and Care Excellence released its second update on hip fracture management in early 2023. First published in 2011, the last update was in 2017. The scope of this recent update focussed on surgical implants for hip fracture. This included recommendation to offer total hip replacements instead of hemiarthroplasty for displaced intracapsular hip fractures, and a move away from Orthopaedic Device Evaluation Panel rated implants to a more standardised consistent choice. Other recommendations such as the importance of multidisciplinary orthogeriatric care, early surgery and prompt mobilisation remain. As the literature surrounding hip fracture management continue to grow, guidance such as this needs to continue updating itself to ensure patients with hip fracture receive the best possible care.
Reducing hip and non-vertebral fractures in institutionalised older adults by restoring inadequate intakes of protein and calcium is cost-saving
Authors: Baek Yeji , Iuliano Sandra , Robbins Judy , Poon Shirley , Seeman Ego , Ademi Zanfina 
Published: June 2023

Abstract

Background
older adults in aged care account for 30% of the population burden of hip fractures. Nutritional interventions to correct under nutrition reduce these debilitating fractures, perhaps partly by reducing falls and slowing deterioration in bone morphology.

Objective
to determine whether a nutritional approach to fracture risk reduction in aged care homes is cost-effective.

Design
cost-effectiveness was estimated based on results from a prospective 2-year cluster-randomised controlled trial and secondary data. Intervention residents consumed a total of 3.5 daily servings of milk, yoghurt and/or cheese, resulting in 1,142 mg of calcium and 69 g of protein compared with the daily intakes of 700 mg of calcium and 58 g of protein consumed by the control group.

Setting
fifty-six aged care homes.

Participants
residents for 27 intervention (n = 3,313) and 29 control (n = 3,911) homes.

Methods
ambulance, hospital, rehabilitation and residential care costs incurred by fracture were estimated. The incremental cost-effectiveness ratios per fracture averted within a 2-year time horizon were estimated from the Australian healthcare perspective applying a 5% discount rate on costs after the first year.

Results
intervention providing high-protein and high-calcium foods reduced fractures at a daily cost of AU$0.66 per resident. The base-case results showed that the intervention was cost-saving per fracture averted, with robust results in a variety of sensitivity and scenario analyses. Scaling the benefits of intervention equates to a saving of AU$66,780,000 annually in Australia and remained cost-saving up to a daily food expenditure of AU$1.07 per resident.

Conclusions
averting hip and other non-vertebral fractures in aged care residents by restoring nutritional inadequacy of protein and calcium is cost-saving.