bluuebunny/crossref_metadata_2025 huggingface dataset:
Magnetic and dynamic mechanical properties of a highly coercive MRE based on NdFeB particles and a stiff matrix
Authors: Hermann S , Butaud P , Chevallier G , Manceau J-F , Espanet C
Published: June 2020

This study concerns a magnetorheological elastomer (MRE) consisting of a magnetically hard powder and a stiff polymer matrix, so called STH–MRE. This material exhibits some strong constitutive differences with the behavior of MRE based on soft polymer matrix and magnetically hard powder (SOH–MRE). This paper presents a manufacturing process for such a STH–MRE, describes testing procedures to get the magnetic properties, the viscoelastic behavior and the magneto-mechanical coupling generated by the remanent magnetization, and shares the STH–MRE properties with the scientific community. Firstly, the manufacturing process is detailed. Then, the homogenized magnetic properties and their dependence on the volume fraction and the temperature are discussed. Thereafter, dynamic mechanical analysis is explained and the viscoelastic properties are discussed considering the polymer matrix properties, the volume fraction and the temperature. Magneto-mechanical couplings are investigated in absence of an external magnetic field. The coercive field strength of composite material and powder are almost equal while the remanent flux density depends on volume fraction. The temperature dependence of the magnetic properties is given as well as homogenization rules. The viscoelastic data of the STH–MRE are provided in a large temperature range and in the mechanical vibration frequency range. The magneto-mechanical coupling due to the remanent magnetization is shown to be negligible.
Large enhancement of the in-field critical current density of YBCO coated conductors due to composite pinning landscape
Authors: Kihlstrom K J , Civale L , Eley S , Miller D J , Welp U , Kwok W K , Niraula P , Kayani A , Ghigo G , Laviano F , Fleshler S , Rupich M , Leroux M
Published: June 2020

YBa2Cu3O7-based coated conductors (CCs) achieve the highest critical current densities (J
c) of any known superconductor and are a key technology for applications such as rotatory machines, high-field magnets and power transmission. Incorporation of nano-sized non-superconducting second phases as additional vortex pinning centers has been considered the most amenable route to further enhance J
c at an industrial scale, and has been successfully used in commercial CCs. The resulting pinning landscape is quite complex, with both synergistic and competing interactions among the various types of defects. Particle irradiation, on the other hand, allows for a controlled post-processing incorporation of a well-defined defect morphology. We have previously shown that irradiation with protons and other light ions can further enhance the in-field J
c in commercial state-of-the-art CCs. Here we develop a combined irradiation process that increases J
c above values previously achieved by irradiating with only one species. Our new approach involves sequentially irradiating with 250 MeV Au ions and 4 MeV protons. For example, at T∼ 27 K (liquid neon) and µ
0
H∼ 4 T, a region of interest for rotatory machines applications, we obtain J
c ∼ 5 MA cm−2, which is about 40% higher than the values produced by the individual irradiations. Finally, we conclude that this is due to the synergistic pinning effects of the introduced splayed, non-uniform columnar defects and small clusters.
Optimization of identifiability for efficient community detection
Authors: Li Hui-Jia , Wang Lin , Zhang Yan , Perc Matjaž
Published: June 2020

Many physical and social systems are best described by networks. And the structural properties of these networks often critically determine the properties and function of the resulting mathematical models. An important method to infer the correlations between topology and function is the detection of community structure, which plays a key role in the analysis, design, and optimization of many complex systems. The nonnegative matrix factorization has been used prolifically to that effect in recent years, although it cannot guarantee balanced partitions, and it also does not allow a proactive computation of the number of communities in a network. This indicates that the nonnegative matrix factorization does not satisfy all the nonnegative low-rank approximation conditions. Here we show how to resolve this important open problem by optimizing the identifiability of community structure. We propose a new form of nonnegative matrix decomposition and a probabilistic surrogate learning function that can be solved according to the majorization–minimization principle. Extensive in silico tests on artificial and real-world data demonstrate the efficient performance in community detection, regardless of the size and complexity of the network.
Design and Operation of the ATLAS Transient Science Server
Authors: Smith K. W. , Smartt S. J. , Young D. R. , Tonry J. L. , Denneau L. , Flewelling H. , Heinze A. N. , Weiland H. J. , Stalder B. , Rest A. , Stubbs C. W. , Anderson J. P. , Chen T.-W , Clark P. , Do A. , Förster F. , Fulton M. , Gillanders J. , McBrien O. R. , O’Neill D. , Srivastav S. , Wright D. E.
Published: June 2020

The Asteroid Terrestrial impact Last Alert System (ATLAS) system consists of two 0.5 m Schmidt telescopes with cameras covering 29 square degrees at plate scale of 1.86 arcsec per pixel. Working in tandem, the telescopes routinely survey the whole sky visible from Hawaii (above

δ
>
−
50
°

) every two nights, exposing four times per night, typically reaching

o
<
19

magnitude per exposure when the moon is illuminated and

c
<
19.5

magnitude per exposure in dark skies. Construction is underway of two further units to be sited in Chile and South Africa which will result in an all-sky daily cadence from 2021. Initially designed for detecting potentially hazardous near earth objects, the ATLAS data enable a range of astrophysical time domain science. To extract transients from the data stream requires a computing system to process the data, assimilate detections in time and space and associate them with known astrophysical sources. Here we describe the hardware and software infrastructure to produce a stream of clean, real, astrophysical transients in real time. This involves machine learning and boosted decision tree algorithms to identify extragalactic and Galactic transients. Typically we detect 10–15 supernova candidates per night which we immediately announce publicly. The ATLAS discoveries not only enable rapid follow-up of interesting sources but will provide complete statistical samples within the local volume of 100 Mpc. A simple comparison of the detected supernova rate within 100 Mpc, with no corrections for completeness, is already significantly higher (factor 1.5 to 2) than the current accepted rates.
Determination of potassium sorbate and sorbic acid in agricultural products using THz time-domain spectroscopy*
Authors: Jiang Yuying , Li Guangming , Lv Ming , Ge Hongyi , Zhang Yuan
Published: June 2020

The aim of this study was to investigate the feasibility of detecting potassium sorbate (PS) and sorbic acid (SA) in agricultural products using THz time-domain spectroscopy (THz-TDS). The absorption spectra of PS and SA were measured from 0.2 to 1.6 THz at room temperature. The main characteristic absorption peaks of PS and SA in polyethylene and powdered agricultural products with different weight ratios were detected and analyzed. Interval partial least squares (iPLS) combined with a particle swarm optimization and support vector classification (PSO-SVC) algorithm was proposed in this paper. iPLS was used for frequency optimization, and the PSO-SVC algorithm was used for spectrum analysis of the preservative content based on the optimal spectrum ranges. Optimized PSO-SVC models were obtained when the THz spectrum from the PS/SA mixture was divided into 11 or 12 subintervals. The optimal penalty parameter c and kernel parameter g were found to be 1.284 and 0.863 for PS (0.551–1.487 THz), 1.374 and 0.906 for SA (0.454–1.216 THz), respectively. The preliminary results indicate that THz-TDS can be an effective nondestructive analytical tool used for the quantitative detection of additives in agricultural products.
New embedded DDSCR structure with high holding voltage and high robustness for 12-V applications*
Authors: Li Jie-Yu , Wang Yang , Jia Dan-Dan , Wei Wei-Peng , Dong Peng
Published: June 2020

A new dual directional silicon-controlled rectifier based electrostatic discharge (ESD) protection device suitable for 12-V applications is proposed in this paper. The proposed device (NPEMDDSCR) is based on the embedded DDSCR (EMDDSCR) structure, in which the P+ electrode and P+ injection are removed from the inner finger. Compared with the conventional modified DDSCR (MDDSCR), its high holding voltage meets the requirements for applications. Compared with the embedded DDSCR (EMDDSCR), it has good conduction uniformity. The MDDSCR, EMDDSCR, and NPEMDDSCR are fabricated with an identical width in a 0.5-μm CDMOS process. In order to verify and predict the characteristics of the proposed ESD protection device, a transmission line pulse (TLP) testing system and a two-dimensional device simulation platform are used in this work. The measurements demonstrate that the NPEMDDSCR provides improved reliability and higher area efficiency for 12 V or similar applications. The measurement results also show that the NPEMDDSCR provides higher robustness and better latch-up immunity capability.
Numerical calculation based on mass and energy balance of waste incineration in the fixed bed reactor
Authors: Khuriati A , Purwanto P , Huboyo H S , Sumariyah S , Suryono S , Putranto A B
Published: June 2020

To evaluate the waste process incineration, a mass, and energy balance is employed to investigate the waste incineration process in a fixed bed. Thermodynamics equilibrium is implemented to describe the incineration process. The complete combustion is only products CO2, H2O, SO2, ash, and excess O2 considered. The mass balance calculates the total mass flow in and out incinerator. Energy balance includes input heat, evaporating heat, chemical heat, radiation, and convection. The input heat is calculated by considering the heat capacity, temperature, heating value, and total mass flow. Evaporation heat is calculated based on the water content, mass flow of each aqueous, and evaporation hot water flow. The result shows that efficiency energy of waste incinerator up to 79,33%. It means the incinerator is included in the good category.
Electrohydrodynamic drying of plant seeds with the shape variation
Authors: Sumariyah S , Khuriati A , Fachriyah E , Pratiwi S H
Published: June 2020

Electrohydrodynamic (EHD) drying is a dryer that does not require moving parts and is environmentally friendly and it results more durable. The purpose of it study is to compare among the physical characteristics of the results of the EHD Drying of the crop seeds with variations in shape. This research used samples of Cucumber (Cucumis sativus) seeds, Long Bean (Vegna Unguiculata ssp) Seeds and Winged bean (Psophocarpus Tetragonolobus) Seeds. It is in variations in diameter of seeds form. EHD flow is yield corona discharge plasma. It is using 10 pairs x 10 pairs of electrodes wich have configuration pin-three concentris ring. It is generated with applied high voltage of 18 kV, the gap electrode 4 mm and drying time 0-35 minutes with a 5 minute time interval. According to the results obtained, the graph of drying rate and the energy efficiency of all seeds sample is the maximum at the beginning of drying is after a 30 minute drying time and then decays with additional drying time. The drying rate and energy efficiency of the cucumber seeds is the largest and the winged bean seeds are the smallest.
Real-time vehicles velocity monitoring and crossroads evaluation using rule-based RESTful maps API service
Authors: Hartanto A , Farikhin F , Suryono S
Published: June 2020

The vehicle velocity monitoring system is an important part of the transportation system. This system is used to conduct monitoring and evaluations so that the quality of the land transportation system can be improved. At present, there are many vehicle velocity monitoring systems. Unfortunately, most of these devices still have to be operated manually, some other devices may have been automated, but it still involves many devices that must be installed, so it is causing problems in installation, maintenance, and repair in the event of damage. In this research, we propose a rule-based cloud system, which monitors the average speed of vehicles passing on the roads that can be used to evaluate the traffic controller at crossroads using the Maps API-Service that accessed via RESTful web services. Longitude and latitude coordinates of the road are inputted into the Maps API-Service than results in distance and travel time data. This data is then developed into other information using the formula and rule-based method to measure the vehicle’s velocity and traffic controller performance. The result of this research produces a cloud-based information system that can measure vehicle velocity and performance of crossroads traffic controllers in real-time and automatically.
Database replication method for real-time measurement pH parameter of fishery using a wireless sensor system
Authors: Sugiharto W H , Ghozali M I , Susanto H , Budihardjo M A , Suryono S
Published: June 2020

The problem of mass fish mortality in Indonesia is already common, Environmental conditions determine the survival of fish. Determination of water environmental conditions has water parameters including water (depth, brightness, water temperature, acidity (pH), dissolved oxygen (DO) and ORP (Oxidation Reduction Potential)). Acidity (pH) is one of the important things in determining the water quality of water. The pH generally increases due to polluted waters. Environmental conditions that are always changing will affect the life processes of organisms in it, especially fish need to be monitored in realtime, especially to avoid massive fish mortality. This paper purpose the real-time acquisition builds with combine the wireless sensor system and database replication concept. From the result of implementation database replication method for real-time measurement pH parameter of fishery agriculture using wireless sensor system, that’s the system can perform continuously to real-time acquisition data online
Authentication of gold jewelry based on elemental composition using laser-induced breakdown spectroscopy
Authors: Anggraini D , Khumaeni A , Hartadi B S , Sugito H , Wardaya A Y
Published: June 2020

One method of identifying gold jewelry is laser-induced plasma spectroscopy (LIBS). In the LIBS technique, plasma is produced by the interaction of laser pulses with the material. Plasma formed shows a monochromatic beam of light with a certain wavelength then analyzed using a spectrometer. In this present research, pulse Nd: YAG laser (1064nm) is used to generate plasma. Au spectrum analysis was performed to distinguish 99.9%, 75%, and imitation jewelry. The 99.9% gold jewelry spectrum has similarities to the 75% gold spectrum. However, Au elements in imitation jewelry are not detected. Spectrum data with different treatments according to the repetition rate also conducted to determine the characteristics of the generated plasma.
Construction of lyapunov function using gradient method to stability analysis of the nitrogen-phosphate-phytoplankton-sediment interaction model
Authors: Widowati  , Putro S P , Triyana E
Published: June 2020

The significant growth in catch fisheries and aquaculture production has enhanced the world’s capacity to consume diverse and nutritious food; however, this fast-growing industry has resulted in the environmental disturbance, especially caused by fish farming. The nutrient was generated from fish excretion and unfed pellet in the form of dissolved organic matter, especially as nitrogen and phosphate particulates. Therefore, applying mathematical models is crucial to understand and minimize the impact on the water ecosystem, thus maximizing productivity. This paper aims to research to analyze the global and stability of the equilibrium point the dynamical system that water and sediment in aquaculture Integrated Multi-Trophic Aquaculture (IMTA) system. Analysis stability global has been proved by constructing the Lyapunov function. The gradient method is used to construct the Lyapunov function in the most general form. The method is based on the assumption of a variable gradient function by determining V and ∇V. In the Lyapunov method construction, if the function V(x) would be definite positive, whereas derivative V(x) would be a definite negative. Models of nitrogen, phosphate, phytoplankton, and sediment system exhibited globally asymptotically stable. This implies that fish farming using the IMTA system on Karimunjawa island was still considerably under normal condition.
The algebraic structure on the neutrosophic triplet set
Authors: Suryoto S , Harjito  , Udjiani T
Published: June 2020

The notion of the neutrosophic triplet was introduced by Smarandache and Ali. This notion is based on the fundamental law of neutrosophy that for an idea X, we have neutral of X denoted as neut(X) and anti of X denoted as anti(X). This paper studied a neutrosophic triplet set which is a collection of all triple of three elements that satisfy certain properties with some binary operation. Also given some interesting properties related to them. Further, in this paper investigated that from the neutrosophic triplet group can construct a classical group under multiplicative operation for ℤ
n
, for some specific n. These neutrosophic triplet groups are built using only modulo integer 2p, with p is an odd prime or Cayley table.
Analysis total plate count (tpc) and organoleptic test on seaweed chips
Authors: Zainuri M , Endrawati H , Winarni S , Arifan F , Setyawan A , Hapsari H P
Published: June 2020

Some seaweed in Indonesia has economic value, such as jelly-producing seaweed, namely Gracilaria, Gelidium, Gelidiopsis, and Hypnea, carrageenan-producing seaweed, namely Euchema spinosium, Euchema cottonii, Euchema striatum, algin-producing seaweed, that Sargassum, Macrocystis and Lessonia. This study aims to determine the microbial contamination on seaweed chips with total plate count (TPC) method and organoleptic test. The samples used were Sargassum chips and Eucheuma cottonii chips with variations in drying of seaweed raw materials. Seaweed chips samples were tested for microbial contamination. The number of microbial contamination on Sargassum chips was 2.6 × 102 CFU/ml and E. cottonii chips was 2.8 × 102 CFU/ml. Based on TPC analysis concluded that Sargassum chips and E. cottonii chips were both safe for consumption because the amount of microbial contamination does not exceed the maximum limit of the Indonesian National Standard, which is 105 CFU/ml. Based on organoleptic tests, Sargassum chips were preferable than E. cottonii chips.
Production of coco-vinegar in a bubble biofermentor
Authors: Jannah S N , Purwantisari S , Handayani D , Hartati I , Yulianto M E
Published: June 2020

The economic value of coconut water can be increased through its conversion into a functional drink of coco vinegar powder having antioxidant and anti-diabetic properties. The fermentation of coconut water into coco-vinegar is more beneficial and cheaper than the chemical routes. Nevertheless, to guarantee product stability and increase the fermentation rate, the fermentation process must be controlled. Bubble bio-fermentation is an applicative technique in upgrading the production scale and in preserve the coco vinegar quality due to its unique characteristics i.e.: simple design, fixed part, controlled flow and agitation, uniform space-time, larger contact area, lower energy input, larger capacity, and higher mass transfer rate. This research objective was to investigate the influence of the parameter process i.e. sugar and alcohol concentration towards the formation of acetic acid in the coconut water fermentation. The research showed that bubble fermentation of coconut water was proven as a potential method for the coco vinegar production process. The bubble bio-fermentation of coconut water conducted by the addition of 8% of sugar, 10% of ethanol and 15% of Acetobacteracetii inoculum and fermentation process for 21 hours was able to give a vinegar having acetic acid concentration up to 1.04%.
Leaf anatomy response of several varieties of rice (Oryza sativa L.) to the application of silica fertilizers
Authors: Kristamtini  , Wirasti C A , Widodo S , Sudarmaji
Published: June 2020

Rice (Oryza sativa L.) requires large amounts of silica for its growth. This study aims to determine the response of leaf anatomy and agronomic performance of several rice varieties to the application of Silica fertilizer. The study was conducted in the first rainy season of 2018 (November 2017 to March 2018 in Semanu, Gunungkidul, Indonesia. The study was arranged in factorial, the first factor was 4 rice varieties (V1 = Inpari blast, V2 = Inpari 42, V3 = Ciherang, and V4 = Inpari 33), the second factor is the treatment of Silica fertilizer dosage (P1 = 250 kg / ha of Silica fertilizer; P2 = 500 kg / ha of Silica fertilizer, P3 = 1,000kg / ha of husk ash, and P4 = 750 kg / ha of Silica fertilizer). Observing agronomic traits including plant height, number of productive tillers, number of filled grains per panicle, and productivity). In addition to observing agronomic traits, microscopic observations of leaf anatomy were also carried out with thick upper and lower epidermal cells, cuticles in the upper and lower epidermis, mesophyll thickness in major and minor intervenous regions. The data obtained were analyzed for variance (ANOVA = Analysis of variance) and Duncan’s advanced test using SAS version 9.2. The results showed that the administration of silica fertilizer increased rice growth and productivity as well as increasing the thickness of the epidermis and upper and lower cuticles both in major and minor intervenous. The highest productivity was achieved by Inpari 42 varieties in the application of 750 kg Silica fertilizer/ha (9.69 ton/ha Harvested Dry Grain).
Metagenome analysis of gut microbial in both the caged and non-caged ducks
Authors: Susanti R , Yuniastuti A , Fibriana F
Published: June 2020

The different duck husbandry techniques, the type of feeds, and environments are believed to have an impact on the diversity of duck’s gut microbiome. This research has the objective to examine the diversity of gut microbiome of duck in different husbandry models, i.e., cage and non-cage. The research design was an exploratory study. Duck samples were taken purposively from both cage (CG) and non-cage (NCG) methods at local duck farms in Gunungpati, Semarang, Central Java, Indonesia. Five grams of duck intestinal samples were prepared for DNA isolation, 16S rRNA gene amplification in the V3-V4 region and were sequenced with Next Generation Sequencing (NGS) method: metagenomics. The 16S metagenomic analysis was performed using QIIME2 (Ver. 2019.4). The most dominant gut bacteria that found in both CG and NCG was Family Enterobacteriaceae, Phylum Proteobacteria and followed by Lactobacillaceae from Phylum Firmicutes. However, the bacterial diversity map in family level was not shown a significant trend between CG and NCG. There were 851 shared species belongs to NCG and CG; it means that more than 800 same bacteria species build up the gut ecosystem both in NCG and CG. It is likely because of similar feed and environmental condition from the two husbandries. The diversity of duck gut microbiome in Gunungpati may be closely related to feeding, rearing techniques, and environments. The number of bacteria species in the non-caged duck (NCG) was higher than CG or caged duck.
The influence of high energy milling to the adsorption of Cd(II) and Zn(II) ions on activated zeolite
Authors: Pardoyo P , Astuti Y , Herinnayah G , Suhartana S , Wibawa P J
Published: June 2020

Natural zeolite is believed to be able to effectively reduce heavy metal levels in water. However, due to the weakness of natural zeolites which have a low surface area and impurity so that the adsorption ability of heavy metals becomes less optimal. Increasing the surface area by using high energy milling is expected to optimize the ability of adsorption. In this study, the particle size of natural zeolite was reduced by using high energy milling then activated with HCl and NH4Cl. The adsorption process was carried out by mixing activated zeolite and activated zeolite milling(activated zeolite fine powder) in a solution of metal ions Zn(II) and Cd(II). SEM-EDX analysis showed a change in surface morphology size on activated zeolite milling and GSA indicated an increase in surface area from 69.48 m2/g to 97.9 m2/g. Activated zeolite tends to having a little bigger in ability of adsorption to Cd(II) ions and Zn (II) ions than activated zeolite milling in highest variation of concentration, 800 ppm. In optimum contact time of adsorption, activated zeolite could adsorp Cd(II) ions shorter nevertheless longer to Zn(II) ions than activated zeolite milling. Both of the zeolites have ability to adsorp Zn(II) ions more than Cd(II) ions.
Understanding the interaction of polysulfone with urea and creatinine at the molecular level and its application for hemodialysis membrane
Authors: Sasongko N A , Siahaan P , Lusiana R A , Prasasty V
Published: June 2020

The formation of polysulfone and its interaction with urea and creatinine have been evaluated at the density functional theory (DFT) level (B3LYP/6–31G**) to study the transport phenomena in hemodialysis membrane at a molecular level. The energy interaction of PSf-creatinine and PSf-urea complexes are -3.87 kcal/mol and -6.31 kcal/mol, respectively; which were classified in weak hydrogen bond interaction. Furthermore, the size of the urea is smaller than creatinine by 5.6 and 3.2 Å, respectively. All data presented that urea has a stronger interaction with PSf than creatinine that indicated urea easier to transport in the PSf membrane than creatinine during the hemodialysis process.
An optimization model of economic order quantity with financial constraints and market tolerance in ud plastikq
Authors: Larasati R H , Khabibah S , Aziz A
Published: June 2020

An optimization model of Economic Order Quantity (EOQ) is one of the methods used to determine the inventory order quantity that can minimize the cost of storage and the cost of ordering supplies. The optimization model in this paper is an optimization model of Economic Order Quantity (EOQ) with financial constraints and market tolerance. Financial constraints include the limited capital available per period and the advanced payment. In the market tolerance factor, there are two periods of market tolerance and three levels of the backorder. Based on this model, numerical simulations can be formulated and carried out so that the best optimal solution was obtained when conditions are unlimited, complete backorder, no advanced payment and the market tolerance period is 0.2 with a total cost decrease of 28,92% and a total profit increase of 13,37% from the initial condition.
Evaluation university ranking system using quacquarelli Symonds and integrated performance measurement system approach
Authors: Prisyanti A , Nurhayati O D , Widodo A P
Published: June 2020

Institutional assessment in the current era is indispensable because of increasing global competition and economic and information growth. Assessment efforts were also carried out on various factors including improving the quality of lecturers, meeting study programs that were in line with national development needs, developing educational curricula, improving the quality of community services and research, and adding internal and external collaboration. It aims to strengthen management and governance so that it has good performance and makes the university a World Class University (WCU). Fulfillment of WCU criteria in faculties or departments is one of the steps to determine the strategy for achieving a tertiary institution by giving more weight to faculty excellence to encourage the use of relevant new criteria. Also, in the ranking process, there are different criteria or indicators in several ranking techniques in the world as a manifestation of performance appraisal of the overall implementation of the organization. Quacquarelli Symonds (QS) is a rating agency that evaluates university weaknesses and strengths and produces assessments that show achievement ratings. The QS ranking also has six indicators that are believed to illustrate the value of the university.
Forecasting of jabodetabek train passengers using singular spectrum analysis and holt-winters methods
Authors: Safitri D , Subanar  , Utami H , Sulandari W
Published: June 2020

Train is one of the convenient transportation, it also reduce traffic jam in Jabodetabek. In order to maintain the convenience of passengers using train services, it is necessary to predict the number of train passengers as a consideration in the planning of Jabodetabek train services. In this study the Singular Spectrum Analysis (SSA) and Holt-Winters methods are used to predict the number of Jabodetabek train passengers. SSA is a powerful technique for nonparametric time series analysis and forecasting, which decomposes the original time series into the sum of a small number of independent and interpretable components such as a slowly varying trend, oscillatory components and noise. Holt-Winters method are suitable methods for data that contains trends and seasonality. The Holt-Winters method is based on three smoothing equations, one for level, one for trend, and one for seasonality. SSA method in forecasting the number of Jabodetabek train passengers give lower Mean Absolute Percentage Error (MAPE) value than Holt-Winters method. This means SSA method is better than Holt-Winters method in forecasting the number of Jabodetabek train passengers.
Enhanced blocking block area method for segmentation of continuous speech
Authors: Arasyi B , Endah S N , Kusumaningrum R , Adhy S
Published: June 2020

Segmentation is one of the important stages in the speech recognition in the type of continuous speech. The segmentation phase serves to break the sentences into words that can be recognized by the computer. The quality of segmentation results can affect the results of the recognition that is done. This research examines the dynamic threshold used in the process of continuous speech segmentation and also proposes an Enhanced Blocking Block Area method in the Indonesian language domain. Three algorithms were compared (K-Means, Fuzzy C-Means, and Otsu) to find the best dynamic threshold and add morphological operations and overlapping to the blocking block area method to obtain the best segmentation accuracy. Based on the results of the research, the Fuzzy C-Means algorithm provides the best threshold results compared to the other two algorithms. By using the Fuzzy C-Means algorithm with the addition of morphology and overlapping, this study can improve the accuracy of continuous speech segmentation in the Indonesian Language from 24% to 90%.
The effect of shading on density and size of glandular trichomes in artemisia cina tetraploid, the source of anti-cancer artemisinin
Authors: Herawati M M , Kasmiyati S , Kristiani E B E
Published: June 2020

Artemisinin is a sesquiterpene lactone found in Artemisia cina having many medicinal properties. Artemisinin produced and stored in Glandular trichomes The purpose of this study was to determine the effect of shade 0%, 50% and 75% on the density and size of glandular trichomes and the content of artemisinin in A.cina tetraploid plants. The shade treatment significantly affected the density and size of glandular trichomes and the content of artemisinin in Artemisia cina tetraploid. 50% shade treatment showed the highest density of Glandular trichome, the width of glandular trichomes, and Artemisinin content. The results of the correlation analysis show that there is a very significant relationship between the density of glandular trichomes and the content of artemisinin.
Information system implementation for the management of malnutrition in pregnant women: a systematic literature review
Authors: Sustamy R P , Widyawati M N , Suryono S
Published: June 2020

Nutrition is a substance that the body needs in order to function properly. The impact of nutrition experienced by the mother can affect the fetus, one of which is less than normal body weight. Maternal nutritional intake is less influential on fetal growth regarding lack of weight, so it requires breakthroughs by using information systems that can provide convenience to understand, teach, connect, motivate, and empower individuals in overcoming problems. This paper is focused on discussing the implementation of information systems for the management of malnutrition in pregnant women. This research design uses a systematic review literature review with international journals. From the review, it can be concluded that the information system can affect the management of nutritional problems such as detecting, diagnosing and providing solutions in the form of health education based on expert / expert recommendations easily and quickly.
The role of information systems towards the success of the family planning program: a literature review
Authors: Yusika K , Widyawati M N , Suryono S
Published: June 2020

Family planning is an arrangement aimed at forming a prosperous family by limiting the number of births by using contraception. Birth control can reduce unwanted pregnancies, high-risk pregnancies, and prevent maternal death. One of the information systems that has been used in the health world is the immunization day reminder and management of hospital activities. The reminder system is effective as a reminder of the immunization schedule. This wireless technology helps health workers quickly and practically in health services. The use of information systems in family planning programs can support the success of family planning, one of which is to reduce the number of family planning failures and the proper use of family planning. This study uses the PRISMA protocol guidelines. The referenced journals come from various sources that have good publishing credibility and can be accounted for. This study discusses how information systems play a role in the success of family planning programs. The method used in this article is a systematic literature review. This study discusses a number of journals by examining in detail in preliminary studies, research objects, performance indicators, variables and methods applied So as to briefly learn the benefits of information systems as a tool for the success of family planning in midwifery services.
The analysis correlation aspects of usability in Sipetang (case study: central java prosecutor)
Authors: Nugraheni D M K , Nada A U
Published: June 2020

Sistem Pencatatan Piutang (SIPETANG) is a recording account receivable system used by every District Attorney Satker Pidsus (Satpid) and High Prosecutor’s Office of Finance (Bidkeu) in Central Java. The purpose of this paper is to analyze the SIPETANG correlation between aspects of ease of use, ease of learning, and confidence with the skills of users. The sample of this study was the District Attorney Satpid in central Java totaling 20 respondents. The questionnaire was used to collect responses regarding the use of SIPETANG. Each aspect of the questionnaire made several questions using the Likert scale, namely 1 = strongly disagree; 2 = disagree; 3 = quite disagree; 4 = quite agree; 5 = agree; and 6 = very agree. The analysis shows that there are a strong correlation and direction of a positive relationship between the aspects used in the paper.
Evaluating the management of the official Pekalongan government website using COBIT 5
Authors: Nugraheni D M K , Noranita B , Saputra R , Erawati E
Published: June 2020

The Government of Pekalongan Regency has implemented e-Government, one of them is the official website of the Pekalongan Government. The website is managed by the Communication and Information Office of the Pekalongan Regency. The website is expected to improve the quality of governance. However, the Government of the Pekalongan Regency has never conducted an evaluation of website management. Therefore, evaluation of website management is needed to ensure that the website has supported governance and is in line with the Pekalongan Regency Government goals. The evaluation carried out refers to the COBIT 5 framework. COBIT 5 was chosen because it can help to align government goals with the website goals. The evaluation was carried out with several domains obtained through mapping the vision and mission of Regent of Pekalongan Regency to COBIT goals. Based on the mapping results, 3 domains were selected namely APO01 (manage the IT management framework), DSS03 (manage problems), MEA01 (monitor, evaluate, and assess performance and conformance). Each domain is assessed to get a capability level. From the assessment results obtained each domain is at level 3 (established process) that is the activity in the domain has been managed in a structured ad in accordance with standards.
Improvement of image quality with fusion in radiography of high and low intensity lateral head
Authors: Utama J , Indrati R , Rochmayanti D , Suryono S
Published: June 2020

Radiological examination of the head bone is an integral part in the management of patients suffering from head trauma. This is because X-ray of the head bone is still quite significant in diagnosing fractures of the head bone. X-ray examination of cases of injury to the facial bones required two times the examination of the lateral head of high and low intensity x-ray to produce different image information due to heterogeneity of the head bone. At this time there is no method to improve image quality by combining the two images. in this study a method of improving image quality with fusion on high-low lateral head bone radiographs is proposed. This research is an experimental study to compare two variables measured from unequal (free) samples, where the group that is compared is more than two, namely the quality of lateral images of high intensity head, low intensity and fusion. Image quality assessment is done using a histogram which is then analysed using the Friedman test. The results showed that the average gray level on the highest histogram was sequentially at high intensity, fusion and finally at low intensity. The statistical test results obtained p value 0.007 which means that there are differences in the quality of lateral head images at high intensities, low intensities and fusion. Fusion image quality obtained grey level values that are between high and low intensity images, this illustrates that using of image fusion is able to provide more complete image information.
Probability of caused factors stroke disease use link and reliability functions
Authors: Sudarno  , Widiharih T , Mukid M A
Published: June 2020

Diabetes mellitus disease is disease which abnormal metabolism for a long time, because pancreas can not be able to produce insulin hormone be enough, or because body can not be able to use insulin hormone has been produced by effective. A stroke occurs if the flow of oxygen-rich blood to a portion of the brain is blocked. Without oxygen, brain cells start to die after a few minutes. Sudden bleeding in the brain also can cause a stroke if it damages brain cells. These objectives are finding significant factors which cause diabetes mellitus disease and determine ordinal regression model. Ordinal regression model is used to look for probability and reliability functions of a patient has stroke disease. The method used to three link functions, that are logit link function, normit link function, and cloglog link function. Testing of homogeneity prediction result of link functions uses linear hypothesis test. Factors caused diabetes mellitus are body mass index, high density lipoprotein, and albuminuria. These factors cause to diabetes mellitus and stroke could be used to prevent diseases, in order to all persons are healthy and happy. The result that probability of a patient with macroalbuminuria has stroke greater than microalbuminuria and a patient with microalbuminuria has stroke greater than normal. Probability of patient with macroalbuminuria by logit, normit, and clogloc link functions is decrease, respectively. Probability of patient with microalbuminuria by logit, normit, and cloglog link functions is increase, respectively. Reliability of a patient with macroalbuminuria, normal, and microalbuminuria have stroke, respectively, is decrease. Reliability of patient with macroalbuminuria by logit, normit, and clogloc link functions, respectively, is increase. Reliability of patient with microalbuminuria by logit, normit, and clogloc link functions, respectively, is zero. All of link function methods yield estimation probability value is the same. AIC value of logit link function, normit link function, and cloglog link function are, respectively, 167.6826, 168.3965, and 169.6107. These results are same by the result of linear hypothesis analysis that AIC values are not different meanwhile their AIC values are not equal. Therefore, logit model, normit model and cloglog model could be used to predict probability with result almost same.
The lipid profile of rats (Rattus norvegicus L.) induced by high fat ration after exposed to ethanolic neem (Azadirazchta indica) leaf extract
Authors: Isdadiyanto S , Sitasiwi A J , Mardiati S M
Published: June 2020

The objective of this study was to analyze the effect of neem leaf ethanol extract as an herbal antihyperlipidemia agent on white rats induced by high fat ration. The white rat used was male Wistar strain with 2 months of age and average body weight of approximately 200 grams. The rats were divided into 6 groups of 4, namely: Negative control (P0) was given commercial ration, positive control (P1) was given high fat ration and duck egg yolk per oral 2.5 ml / g BW, P2 was given high fat ration and duck egg yolk per oral 2.5 ml / 200 g BW + 8 mg / g BW simvastatin in 1 ml of distilled water, P3 was given high-fat ration and duck egg yolk orally 2.5 ml / 200 g BW + 75 mg / g BW ethanol extract of neem leaf in 1 ml of distilled water, P4 was given high fat ration and duck egg yolk per oral 2.5 ml / 200 g BW + 100 mg / g BW ethanol extract of neem leaf in 1 ml of distilled water, and P5 was given high fat ration and duck egg yolk per oral 2.5 ml / 200 g BW + 125 mg / g BW ethanol extract of neem leaf in 1 ml of distilled water. The variables observed were total cholesterol, HDL, LDL and TG levels. Data were analyzed using ANOVA followed by Least Significant Difference (LSD) test with 95% confidence level using SPSS 10.0 software. The results showed that administration of the ethanol extract of neem leaf (A. indica) can raise levels of HDL, lowering levels of LDL cholesterol and TG in blood serum of white rats (Rattus norvegicus L.).
The growth and potential of gamma-aminobutyric acid (GABA) by lactic acid bacteria isolated from fish fermented food from Maluku, Indonesia
Authors: Putri A L O , Kusdiyantini E , Pujiyanto S
Published: June 2020

GABA is a non-protein amino acid that is widely distributed in plants, animals and microorganisms. GABA can increase plasma concentration, growth hormone and protein synthesis in the brain. Several studies have shown that LAB can reduce pathological conditions due to oxidative stress, which indicates that LAB has antioxidant activity. One of the metabolites produced by LAB is GABA. The purpose of this study was to determine the growth of LAB isolates, the ability of GABA production and to know the character of INS-A2 and INS A4 isolates as a result of isolation from fish fermented. Bacterial growth was carried out for 60 hours 37°C. The growth of LAB isolates INS-A2 and INS-A4 were treated with the addition of MSG and non-MSG 2% in MRSB. GABA production can be identified qualitatively by the Thin Layer Chromatography (TLC) method using the aluminum TLC plate (Silica gel F254, Merck, Mumbai India). The LAB inoculum which was treated on MRSB media was centrifuged at a speed of 6000 rpm for 20 minutes at 4°C, the supernatant was deposited or dropped on the TLC plate. TLC was carried out using an eluent consisting of a mixture of n-butanol: acetic acid: distilled water in a ratio of 5:3:2. The Rf value of GABA compound produced by LAB INS-A2 and INS A4 isolates was 0.62, GABA standard (Pregabalin) 0.62, Rf MSG = 0.23. Based on the results of the study it can be concluded that the highest growth of INS A2 MSG isolate at 24 hours, INS-A2 non MSG highest at 30 hours. The highest growth of INS A4 MSG isolate at 30 hours and INS-A4 non MSG highest at 36 hours. The highest GABA concentration was owned by INS-A2 MSG isolate of 20,0 mg/ml. INS-A2 non MSG isolate 17,5 mg/ml, INS-A4 MSG 18,8 mg/ml and INS-A4 non-MSG 15,9 mg/ml. LAB characterization of INS-A2 and INS-A4 isolates obtained negative catalase, negative motility, fermentation type test (homofermentative) and gram-positive staining in accordance with the characteristics of BAL in general.
Analysis of railway noise level against the level of disruption of communities living in the area around the railway in the semarang city
Authors: Margiantono A , Sujito  , Mulya V , Setiawati E
Published: June 2020

One of the most significant modes of transportation in moving a country’s economic sector is the train, being able to move large quantities of goods and people effectively, therefore at this time the government continues to intensify railroad development. One of the negative impacts that will arise as a result of railroad construction is increased noise in the area along the railroad tracks in the city of Semarang. Bulu Lor settlement has exceeded the quality standard of 57 dBA from the threshold of 55dBA, this is due to the high frequency of trains that cross the settlement as much as 73 series of trains per day Besides that, the high number of vehicles passing by the area as a result of the activities of the local community, especially near the main road of the settlement also significantly increased noise. In this study, the highest noise of 67.3 dBA was found in Tawang Station. Nearly 50% of the people who live in the area around the railroad in Semarang city have experienced symptoms of stress, whether physical, emotional, intellectual or interpersonal.
Non-Poisson queue with normal logistic distribution (case study in Semarang automatic toll gate)
Authors: Sugito  , Prahuama A , Ispriyanti D , Mustafid
Published: June 2020

Queue theory is a method that can be used to analyze the performance of a service system. This study aims to apply queue theory for analysis system performance’s size at the Gayamsari Toll Gate by using data obtained through observation. Then the analysis step starts with checking the steady state assumption, goodness of fit tests to data, determines the queue model, and calculates the system performance’s size. Based on analysis with Sigma Magic software, the results of the study obtained queue model with normal distribution on the number of arrivals and logistic distribution on the number of services data. From this model, it can be used to calculate the service system performance’s size at the Gayamsari Toll Gate. The result of this calculation include estimates of the waiting time and the number of vehicles in the system or queue. It can be concluded that the service system at the Gayamsari Toll Gate is in good condition because the waiting time is less than half minute.