bluuebunny/crossref_metadata_2025_split huggingface dataset:
Flexible Antenna: A Review of Design, Materials, Fabrication, and Applications
Authors: AL-Haddad M A S M , Jamel Nursabirah , Nordin Anis Nurashikin 
Published: June 2021

Abstract
The Flexible antenna is experiencing major growth recently because of the demand for wearable devices, military applications, health monitoring systems, communication devices, and global positioning systems (GPS). The choice of the flexible antenna relies on many factors such as materials used, substrate, antenna performance, processing technique, and the surrounding environment. Numerous antenna designs had been investigated by the researchers using conductive materials such as silver. Substrates such as cotton and elastomeric polymers with different fabrication techniques such as screen printing and inkjet printing had been implemented for various applications. This paper focuses on the previous work of flexible antenna design and miniaturization techniques such as electromagnetic bandgap (EBG) for button antenna. A summary of previous works on the flexible antenna is also highlighted.
Time Series Analysis for Vegetable Price Forecasting in E-Commerce Platform: A Review
Authors: Choong K Y , Raof R A A , Sudin S , Ong R J 
Published: June 2021

Abstract
Vegetables industry plays an important role especially in providing the abundant fresh agricultural products. Forecasting the vegetable price is vital in agriculture sector for effective decision making. In Malaysia, the problems faced by the farmers are not only their age, but also their competitive skill where the wholesale market and the hypermarket/supermarket are prioritized by the consumers in Malaysia for the fresh vegetables and fruits. This review article helps to recognize the current problems faced by the agricultural sector of Malaysia and study the relationship between the agriculture and E-Commerce. Recent researchers have mentioned the growth of the E-Agribusiness and the authors found the potential of an Agricultural E-Commerce platform with price forecasting model in solving the current national issue. This research reviews the existing agricultural E-Commerce platforms in worldwide and try to compare with the local one. After the reviews have been done, the authors bring up an idea in constructing the time analysis model in hybrid approach for veggies price forecasting in an agricultural E-Commerce platform which can be used by the government in deriving their policies.
High-resolution for IAXO: MMC-based X-ray detectors
Authors: Unger D. , Abeln A. , Enss C. , Fleischmann A. , Hengstler D. , Kempf S. , Gastaldo L. 
Published: June 2021

Abstract
Axion helioscopes like the planned International Axion
Observatory (IAXO) search for evidence of axions and axion-like
particles (ALPs) from the Sun. A strong magnetic field is used to
convert ALPs into photons via the generic ALP-photon coupling. To
observe the resulting photons, X-ray detectors with low background
and high efficiency are necessary. In addition, good energy
resolution and low energy threshold would allow for investigating
the ALP properties by studying the X-ray spectrum after its
discovery. We propose to use low temperature metallic magnetic
calorimeters (MMCs). Here we present the first detector system based
on MMCs developed for IAXO and discuss the results of the
characterization. The detector consists of a two-dimensional
64-pixel array covering an active area of
16mm2 with a fill factor of
93%. We achieve an average energy resolution of
6.1 eV FWHM allowing for energy thresholds below
100 eV. This detector is the first step towards a
larger 1 cm2 array matching the IAXO X-ray
optics. We determine the background rate for an unshielded detector
system in the energy range between 1 keV and
10 keV to be
3.2(1) × 10-4 keV-1 cm-2 s-1
from events acquired over 30 days. In the future, active and
passive shields will significantly reduce the background induced by
cosmic muons and natural radioactivity. Our results demonstrate that
MMCs are a promising technology for helioscopes to discover and
study ALPs.
Picosecond timing resolution measurements of low gain avalanche detectors with a 120 GeV proton beam for the TOPSiDE detector concept
Authors: Jadhav M. , Armstrong W. , Cloet I. , Joosten S. , Mazza S.M. , Metcalfe J. , Meziani Z.-E. , Sadrozinski H.F.-W. , Schumm B. , Seiden A. 
Published: June 2021

Abstract
This paper presents results that take a critical step toward
proving 10 ps timing resolution's feasibility for particle
identification in the TOPSiDE detector concept for the Electron-Ion
Collider. Measurements of LGADs with a thickness of 35 μm
and 50 μm are evaluated with a 120 GeV proton beam. The
performance of the gain and timing response is assessed, including
the dependence on the reverse bias voltage and operating
temperature. The best timing resolution of UFSDs in a test beam to
date is achieved using three combined planes of 35 μm thick
LGADs at -30°C with a precision of 14.3 ± 1.5 ps.
Egypt’s water budget deficit and suggested mitigation policies for the Grand Ethiopian Renaissance Dam filling scenarios
Authors: Heggy Essam , Sharkawy Zane , Abotalib Abotalib Z 
Published: June 2021

Abstract
The Nile River is a unique environmental system and essential water resource for its basin riparian nations. Population growth, changes in precipitation patterns, damming and usage rights disputes present extreme challenges in utilizing and managing the basin’s primary water resource. These stress factors are of particular concern for highly populated Egypt, the furthest downstream recipient of the Nile’s water flow. Previously, colonial agreements had granted Egypt and Sudan the majority of water use rights on the Nile without neighboring Ethiopia receiving any specific allocation. Today, Ethiopia plans to increase its energy production through its Nile-powered Grand Ethiopian Renaissance Dam (GERD). While the 74-billion cubic meter (BCM) dam presents promising development opportunities for Ethiopia, the Nile’s altered flow will increase the existing water deficit for Egypt—the quantification and mitigation of which are still largely unconstrained and under intense debate. To address this deficiency, we estimate that the median total annual water budget deficit for Egypt during the filling period, considering seepage into the fractured rocks below and around the GERD reservoir, as well as the intrinsic water deficit and assuming no possible mitigation efforts by Egyptian authorities, will be ∼31 BCM yr−1, which would surpass one third of Egypt’s current total water budget. Additionally, we provide a feasibility index for the different proposed solutions to mitigate the above deficit and assess their economic impact on the GDP per capita. Our results suggest that the unmet annual deficit during the filling period can be partially addressed by adjusting the Aswan High Dam (AHD) operation, expanding groundwater extraction and by adopting new policies for cultivation of crops. If no prompt mitigation is performed, the short-term three-year filling scenario would generate a deficit that is equivalent to losses to the present cultivated area by up to 72% resulting in a total loss of the agricultural GDP by $51 billion during the above-mentioned filling period. Such figures are equivalent to a decrease in the total national GDP per capita by ∼8%, augmenting existing unemployment rates by 11%, potentially leading to severe socioeconomic instability.
Risk management of chilli supply chains using weighted failure mode effect analysis
Authors: Mailena L , Indrawanto C , Astuti E P 
Published: June 2021

Abstract
Chilli supply chain is very vulnerable to risk due to scattered production centre, large number of actors along supply chain. Hence, risk management of chilli supply chain is very crucial to be executed in order to reduce the losses received by farmers and traders. The study aims to (i) identify and assess supply chain risks, and (2) arrange efforts to manage risks in the chilli supply chain. Weighted Failure Mode Effect Analysis (WFMEA) enriched by Analytical Hierarchy Process (AHP) was implemented to evaluate high-risk priorities and to manage those risks. The results showed that risk in marketing chain got the highest priority to be controlled since the greatest potential failure occurred in this channel with the weighted Risk Priority Number about 647.3. Risk indicators in this channel were cashless payment, major harvesting, and price fluctuations. Strategies to manage those risks were the provision of storage warehouses, planting time arrangements, bailout funds for cash purchase, harvest and post-harvest technology and farm capital loan. Government supports was required for providing the small-scale storage, home scale ozonation technology to extent the chilli shelf life and improve the product quality as well as policies on accessible farmer’s credit with farming guarantee system.
Seawater intrusion prone areas around Yogyakarta International Airport: a geological approach
Authors: Zamroni A , Sugarbo O , Trisnaning P T , Prasetya H N E 
Published: June 2021

Abstract
Construction of Yogyakarta International Airport on Kulonprogo coastal areas can threaten the groundwater quality because it can cause seawater intrusion. The method in this study is by using a literature review. The purpose of this review is to investigate seawater intrusion prone areas around Yogyakarta International Airport based on a geological approach. The geological approach associated with seawater intrusion in the study site is a lithological characteristic. A lithological characteristic discussed in this study is the origin of the sand on Kulonprogo beach where the Yogyakarta International Airport is located. The elements used in the seawater intrusion test parameters are Na+, Ca2+, K+, Mg2+, CO3
2−, HCO3
−, Cl− and SO4
2−. A rise in Cl− was reported as suggesting the intrusion of seawater into the groundwater. But if only see the value of one of those elements, it cannot indicate seawater intrusion occurs in that area. The high element’s contents can arrive from the solution or weathering the lithological. This study is preliminary research, to assess seawater intrusion in the study site, it is necessary to conduct a groundwater geochemical test in the future.
Marketing strategy of brown sugar from palm oil in Serdang Bedagai District
Authors: Simbolon S B , Supriana T , Lindawati  
Published: June 2021

Abstract
Palm sugar has the potential to become a substitute commodity for domestic sugar, besides being able to play a role in reducing dependence on imported sugar. Brown sugar from palm sap has considerable potential economic. This study aims to determine a) the farm analysis of palm brown sugar agribusiness, b) how the marketing system is c) identify the internal and external factors, and d) formulate and determine the priority of palm brown sugar agribusiness strategies in Serdang Bedagai district. The analysis applied here are, financial analysis, marketing analysis, IFAS/EFAS, SWOT and QSPM. From the results of data processing, it shows that the R / C Ratio value obtained by the craftsmen is 1.044 means that the business is feasible to work on. Aspect analysis marketing farmer’s share and marketing efficiency values in all sugar marketing channels palm brown sugar in is running efficiently. Based on a SWOT analysis, business position palm sugar processing is in quadrant I, S-O strategy that is supporting aggressive growth.
Potential of production in Elaeis guineensis Jacq. type resistance to Ganoderma pathogen
Authors: Hayati R , Basyuni M , Lisnawita  , Munir E 
Published: June 2021

Abstract
This study was established to report the yield production (fresh bunches) of oil palm (Elaeis guineensis Jacq.) material planting Resistance Plant (RP) and Non-Resistance Plant (NP) to Ganoderma on the experimental plantation. The data was observed to conduct in oil palm from zero (0) until twenty-five (25) planting years. In 5 years, firstly Ganoderma pathogen was recorded to start low yield production in both materials planting. The production was involved a highest in RP 581,163 FFB/ha and lowest in NP 385,158 FFB/ha. Furthermore, Ganoderma pathogen disease was incidence distinct at 19.95% and 86.42%, respectively. The differentiation analysis of total plants was 196,005 (58.89%). Wherein, a total plant survives of 110 Resistance Plants and 36 Non-Resistance Plants for 25 planting years. Descriptive analysis was performed with Microsoft Excel 2013 showed the Standard Deviation (SD) 7.35 in P-Value < 0.05 (95%).
Risk analysis of polyculture cultivations of tiger shrimp (Penaeus monodon) and tilapia (Oreochromis niloticus) (case: Belawan Sicanang Village, Medan Belawan District, Medan City)
Authors: Ginting J B , Supriana T , Wibowo R P 
Published: June 2021

Abstract
This study aims to analyse the level of income received by Belawan Sicanang sub-district farmers in cultivating tiger shrimp and tilapia polyculture and to analyse the risk of production, price risk, income risk and risk mitigation. The sampling method used was the snowball method. The sample size was 40 respondents. The results of the study found that the average income per hectare per tiger shrimp cultivation and tilapia cultivation was IDR 7,947,489,525. The coefficient of variation (CV) of income is 0.304; production of 0.38 for tiger shrimp and 0.44 for tilapia and the price of 0.11 for tiger shrimp and 0.04 for commodity tilapia. The polyculture culture of tiger shrimp and tilapia in the study area has a level of risk and is feasible to continue. To reduce the risk, risk mitigation is carried out, namely: ex ante by taking loss prevention measures, interactive by improving the cultivation system, ex-post by strengthening the joint group of fisheries in the research area.
Marketing efficiency of red chilli pepper in North Sumatera Province
Authors: Nasution A H , Hanter  , Rahman P 
Published: June 2021

Abstract
This study aims to analyse the marketing of red chili pepper using price efficiency analysis. The data used is secondary data, namely time series data of monthly red chili pepper prices at the level of farmers, intermediate traders, wholesalers, retailers and consumers during 2015 to 2019. Data processing was carried out using quantitative descriptive analysis. Based on the results of the price efficiency analysis conclude that in the short and long term the red chili pepper market at the farm level is strongly intermediate traders, wholesalers, retailers and consumers. This can be seen from the IMC value which is smaller than 1 and the coefficient b2 which is greater than 0.05. This integration shows the marketing of red chilies in North Sumatra is efficient when viewed from price efficiency.
Analysis of carrot production development in Karo Regency North Sumatera
Authors: Priyadi E , Supriana T , Wibowo R P 
Published: June 2021

Abstract
This research was conducted to predict the value of carrot production in Karo Regency North Sumatera in 2020-2021 by using Autoregression Moving Average model through some testing stages: 1). stationarity of carrot production data for 2017-2019. In this study, the data were declared stationary through a differentiation process (1

st

difference) with an Augmented Dicky-Fuller (ADF) value of < 0.05. 2). Furthermore, testing the model through the value of Autocorrelation Function (ACF) and Partial Correlation Function which decreased sharply (Cut Off) at the 2

nd

lag, so that the possible models compiled were AR1, AR2, MA1 and MA2. 3). It was decided to use the MA1 model, then it was obtained the results of carrot production in Karo Regency, North Sumatera 2020-2021 with a positive trend, which revealed the increasing of carrot production. The highest prediction occurred in December 2021, amounting to 8,580.67841 tons.
Risk perception and risk reduction efforts of red chili business in Langkat Regency North Sumatera Province
Authors: Iskandar R , Ayu S F 
Published: June 2021

Abstract
The process of supplying red chili is not fully controlled by the farmers. The main factor that causes it is that the red chili farmers are small-scale farmers whose production decision-making process is thought not handled by a good forecast of production and prices. This is due to the influence of different perceptions of farmers in deciding which farming strategy to use. Therefore, it is necessary to carry out research on the relationship of risk perceptions to risk management strategies for red chili farming in Langkat Regency, North Sumatra Province. The data used are primary data sourced from questionnaires and interviews with 112 red chili farmers in Langkat Regency. The analysis method used is the Pearson Correlation to see the relationship between farm risk management strategies and perception. The results showed that the correlation of the risk perception variable and risk management strategy had a strong, significant and unidirectional effect on the red chili farming.
Factors affecting risk perceptions of young entrepreneurs in agricultural startup business
Authors: Ayu S F , Iskandarini  , Fatoni R B M I 
Published: June 2021

Abstract
Young entrepreneurs often experience failure in maintaining the startup businesses they build. This also happens to entrepreneurs in the agricultural sector. This causes them to be more aware of risks. This study aims to find out what types of risks actually makes them insecure and turns into a risk averse person which will hinder the development of their startup business. The risk perceptions discussed in this study include production risks, marketing risks, financial risks and human resource risks. The assessed production risks are related to the risks to production inputs, use of production technology, climate and pests and diseases. The risks associated with marketing are risks related to post-harvest processing, sales and market prices. The financial risks mentioned is related to the availability of credit and interest. The risks associated with human resources is a matter of labour availability as well as health. The method used is multiple linear regression to look for factors that influence the perceptions of young entrepreneurs towards risks.
Analysis of effect of production factors on the production and income of coffee farmers using Beauveria bassiana in Siborongborong Subdistrict
Authors: Siahaan T M H , Supriana T , Iskandarini  
Published: June 2021

Abstract
Arabica coffee is a type of coffee that is widely grown in the highlands of North Sumatra. Siborongborong District is the largest Arabica coffee producing. However, the productivity of Siborongborong is lower than the potential of sigararutang variety. This study aims to analyse the effect of fertilizer, Beauveria bassiana (Bb) and labour use on coffee production and to compare the income of coffee farmers who use Bb intensively, non - intensively and do not use Bb. The method used to analyse are the multiple linear regression and compare means analysis (Independent Sample Test). The results show that simultaneously, fertilizer, Bb, and labour have a significant effect on coffee production. Partially, only fertilizer and Bb have a significant and positive effect, meanwhile labour has no significant effect on the coffee production. There is a significant difference between the income of coffee farmers who use Bb intensively and those who use Bb not intensively and who do not use Bb. However, no significant differences between the income of coffee farmers who used non-intensive and those who did not use Bb. The income of farmers who use Bb intensively is higher than farmers who use Bb not intensively and who do not use Bb.
The utilization of palmitamide as palm oil-based plasticizer in SBR/carbon black composites: An observation on degree of carbon-black dispersion
Authors: Khosman H , Hafni K N , Surya I 
Published: June 2021

Abstract
Degree of carbon black (CB) dispersion in the composites of styrene-butadiene rubber (SBR)/CB/palmitamide was observed. The palmitamide is a variety of amides ingredients. It was formed by the chemical reaction of urea and palmitic acid at a locked condition. The palmitic acid is derived from palm oil. The palmitamide was mixed with SBR/CB compounds with varied doses i.e., from two till eight phr, whilst the CB was mixed with the SBR at a settled dose (thirty phr). The impact of palmitamide doses on the degree of CB dispersion in the SBR/CB composites was observed. Based on the torque behaviours of the SBR/CB/palmitamide systems; the degree of CB dispersion was observed. The palmitamide behaved as curative ingredient and plasticizer for the SBR/CB systems. The palmitamide cut down the minimal torque but enlarged maximal torque and torque changes of the systems of SBR/CB. The bigger the palmitamide dose, the lower the minimal. As a plasticizer, the palmitamide cut down the minimal torque causing in better the degree of CB dispersion in SBR. The bigger the palmitamide dose, the better was the CB dispersion.
Application of mock hydrology model in estimating semi-monthly discharge in Sei Petani Sub-Watershed
Authors: Nasution D L S , Simanjuntak F V U , Susanto E , Ichwan N 
Published: June 2021

Abstract
One of indicators which represent watershed condition is hydrology condition that can be represented by the value of monthly discharge, maximum discharge, minimum discharge, and river regime coefficient. This study aims to estimate the monthly discharge value of Sei Petani Sub-Watershed using the Mock Hydrology Model. The application of the Mock Model require some input data such as rainfall, climate data, and area of watershed. Optimum parameters could be obtained by model calibration and validation that was carried out by statistical and graphical test. Optimal parameters that has been obtained would be used to estimate discharge value in existing condition. The result showed that the model accuration for calibration and validation process has the coefficient correlation (R) value more than 0.75, with volume error (VE) less than 0.05 that means there were strong relationship among calculated data and observed data. The optimum parameters value accomplished to estimating discharge value for existing condition. The watershed health based on hydrology indicators on Sei Petani Subwatershed could be seen with the value of specific maximum discharge, specific minimum discharge, and river regime coefficient that shown this watershed in well condition.
Effect of violin sound exposure with pressure level variation to green mustard (Brassica juncea L.) growth and productivity
Authors: Prasetyo J , Raju  
Published: June 2021

Abstract
The objective of this research was to investigate effect of violin sound exposure to morphology characteristic and green mustard productivity. Experimental design used was completely randomized design with one treatment factor which was sound level. The sound level consisted of three levels, 70-75 dB, 80-85 dB and 90-95 dB. Total treatment combinations were 4 combinations. The object of this research was Tosokan variety of green mustard which are commonly available in market. The number of samples was considered as repetition. Result showed that violin sound at level 70-75 dB resulted the highest germination rate about 98% when compared to 80-85 dB and 90-95 dB levels. Violin music sound stimulation gave significant effect on plant morphological characteristics such as plant height, leaf area and plant and root length when compared to the control plants. Sound exposure at 70-75 dB sound level generally produced highest values for all morphological characteristics. Statistical analysis showed that sound exposure at 70-75 dB sound level produced highest productivity average weight, 22.5 grams per plant, while control plants produced an average weight only 15 grams per plant. The conclusion of this study was violin music stimulation resulted increased green mustard productivity, especially at low sound level.