bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sales and Marketing of Fresh Milk by Smallholder Dairy Farmers in West Java
Authors: Ariningsih E , Saliem H P , Erwidodo  
Published: November 2019

Abstract
As a highly perishable product, sales and marketing are very important for fresh milk produced by dairy farmers. This paper aimed to analyze the sales and marketing of fresh milk done by smallholder dairy farmers in West Java. Data used in this paper is a part of the IndoDairy Smallholder Household Survey (ISHS) data collected during August–September 2017, covering 600 smallholder dairy farm households in Bandung, Garut, Cianjur, and Bogor Regencies. Descriptive statistic analysis using tabulation was employed to process the data. Almost all the dairy farmers sold fresh milk, except one in Bogor who sold milk in the form of processed milk. Almost all farmers (98 percent) sold their fresh milk to dairy cooperatives, showing dairy farmers’ strong dependency on the dairy cooperatives. The price of fresh milk received by the farmers ranged from Rp4,794/L (Bogor Regency) to Rp4,212/L(Cianjur Regency), giving an average of Rp4,459/L. Due to the strong dependency on the dairy cooperatives, it is important to strengthen dairy cooperatives’ management capacities to help dairy farmers improve their milk quality, and hence prices, as well as dairy farmers’ welfare.
Positive Deviance Approach: Local Community-Based Solution (A Case Study of Peranakan Etawa Goat Farm)
Authors: Padmaningrum D , Hariadi S S , Subejo  , Hariyadi F T 
Published: November 2019

Abstract
The study aimed to analyze the potentials of Positive Deviance (PD) approach in addressing the problems of Peranakan Etawa (PE) goat farm. By using a qualitative approach, this research was conducted in the Kaligesing Sub-district, Purworejo Regency, Central Java. Data were obtained through in-depth interviews and observation. Participants were determined purposively, which include elements of smallholder farmers and the other stakeholders such as extension worker and the staffs of Agency of Agriculture Livestock Marine and Fisheries of Purworejo Regency. The results showed that the PD approach has a possibility to be applied in driving behavioral change that leads to the livestock management as agribusiness practices. It is powered by a situation where the livestock problem was not solely in the form of technical barriers. The existence of PD and the support of local leaders such as village heads as well as the commitment of small farmers themselves are necessary in order to successfully imply the agribusiness practices.
Contribution of Different Feeding Method and Protein Source on Blood Urea as well as Urinal Nitrogen Excretion of Ettawah Crossbreed Goats
Authors: Widodo H S , Sudjatmogo  , Muktiani A , Nuswantoro L K , Harjanti D W , Syamsi A N 
Published: November 2019

Abstract
Ettawah crossbreed goats are great potential to meet the need of milk in Indonesia. The potency could be optimized by administering good feeding management and high quality feedstuffs, that could be evaluated by urea metabolism and nitrogen balance of animal body. This research is aimed to evaluate effects of feeding method along with protein source. Sixteen ettawah crossbreed goats were administered with iso crude protein (17%) and total digestible nutrients (68%). Factorial design was applied which the factors were feeding method (Total Mixed Rations/TMR vs. Separated/SEP) and protein source (soybean meal/SBM vs. Fish meal/FSM), therefore four treatments were administered (T1:SEP+SBM; T2:TMR+SBM; T3:SEP+FSM; T4:TMR+FSM) for 3 weeks and data collecting on 4th week. Concentrates (50%) were given at the beginning then Napier grass hay (50%) on separated feeding method. Feed, orts, urine, feces and milk were collected for nitrogen quantification, Bloods from jungular vein drawn on 0, 3, 6 hours after feeding and milk were collected for urea quatification. The result shown that TMR (T2&T4) significantly (p<.05) gave higher 3 hous after feeding blood urea concentration then SEP (T1&T3) (43.84vs40.19mg/dl). There were no significant (p>0.05) effect of tretments to milk urea concentration, but all treatments have excess milk urea concentration. Both feeding methodes and protein source significantly (p<0.01) affecting urinal nitrogen exctretion, which T2 has the most high nitrogen excretion (3.56g/d). Concluded that TMR as feeding method and FSM as protein source affecting greater nitrogen excretion which implicates inefficiency.
Carcass Production and Single Nucleotide Polymorphism Adipocyte Fatty Acid Binding Protein (A-Fabp) Gene on Cairina moschata
Authors: Ismoyowati  , Sulistyawan I H , Mugiyono S , Rosidi  
Published: November 2019

Abstract
The aim of this study was to determine differences in growth, carcass production and identify polymorphisms of adipocyte fatty acid binding protein (A-FABP) gene in Muscovy ducks from the second generation selection (G2). The research material used 180-day-old Muscovy ducks consisting of male and female ducks with white feathers and male and female ducks with a combination of black and white feathers. Measurement of duck body weight was carried out every week, and ducks are slaughtered at 10 weeks to obtain carcass production data. The data obtained were analyzed by systat-13 program based on variance analysis and Duncan test. The primary design was based on a database of the genebank Cairina moschata adipocyte fatty acid binding protein (A-FABP) gene, exons 1, 2 and partial cds (FJ763338.1). The primary base sequence of the A-FABP gene was the primary forward: 5’-TCTGGGGGTGTTATCTGGAG -3’ and reverse primer: 5’-ATTTGTCAGTGGCTGTGCTG -3’. The sequencing results of PCR products were analyzed using bioedit version 7.7 to determine the presence of the A-FABP gene polymorphism. The results showed that at the same age male Muscovy ducks produced carcass weight, and thickness of breast meat higher than female ducks. Body weight, carcass weight and parts of the carcass (breast, thigh, back, and wings) of a combination black-white feather male ducks higher than the male white feathers. The abdominal fat on all the ducks relatively the same. The A-FABP gene PCR product was at 176 bp. The results of bioedit analysis showed that at 151 bp, base length there was a mutation from Guanin to Adenin in the observed Cairina moschata, both male and female Muscovy ducks with white feathers and black-white combinations. All ducks observed had homozygous AA genotypes. Base changes in SNP c. 151G> A indicate a transition mutation. The study concluded that male Muscovy duck with a combination black-white feathers have highest genetic potential in body weight and carcass production with thick meat breast compared to other ducks. The weight of abdominal fat was relatively the same in male and female manila ducks. The A-FABP gene in manila ducks was monomorphic.
Air Pollution Monitoring for Bogor Smart City Based Internet of Things and Social Media (Twitter)
Authors: Suriansyah Mohamad Iqbal , Harsani Prihastuti 
Published: November 2019

Abstract
The increasing number of vehicles has affected the air quality of Bogor city, one of them is CO gas (Carbon monoxide). CO is included in air pollution variables when the levels are higher than 100 - 300 ppm [1]. In line with one of smart city development strategy City of Bogor is Smart Living to realize a decent, comfortable, and efficient living environment. Bogor City Government conducted traffic engineering around Bogor Botanical Gardens and Bogor Palace with the introduction of One Direction System (SSA) around the clock [4]. This has an impact on the concentration of air pollution around the SSA. The development of sensor and internet technology makes it easy to develop integrated pollution monitoring systems [3]. An Arduino-based air pollution monitoring system is used to detect CO gas. If the concentration of exposure received by the MQ-7 sensor module exceeds the prescribed normal limit the CO gas concentration will be transmitted over the internet and aired on a text-based social media twitter. The device is designed using some components consisting of Arduino, Ethernet Shield, and MQ-7 sensor module. Programs are written and uploaded using C programming languages and the Arduino IDE 1.0.6 compiler. This prototype has been tested in the laboratory and applied to measure CO gas in five subdistricts of Bogor City-road. The results of this system are expected to be used by policymakers as basic information for decision making to reduce pollution level of Bogor City.
Modeling the impacts of constant price GDP and population on CO2 emissions using Cobb-Douglas model and ant colony optimization algorithm
Authors: Sukono  , Subartini Betty , Thalia Priscila , Supian Sudradjat , Lesmana Eman , Budiono Ruly , Juahir Hafizan 
Published: November 2019

Abstract
The per capita Gross Domestic Product (GDP) measures a country’s economic growth. Increasing GDP is a dream of all countries, but generally, GDP increases often have a negative impact with increasing CO2 emissions. This paper intends to model the impact of GDP growth based on constant prices and the population in increasing CO2 emissions in Indonesia. Modeling is done by using Cobb-Douglas model production function, where parameter estimation is done by using ant colony optimization algorithm. Furthermore, model estimators are used for forecasting CO2 emission concentrations. The results of the analysis show that the impact of GDP based on constant prices and population significantly follows the Cobb-Douglas model of production, with the coefficient of elasticity is 0.819405999 and 0.834930855, respectively. The value of determination was obtained at 97.4%, indicating that the correlation between GDP at constant prices and population with increasing CO2 emissions in air is very strong. Estimator model obtained has a level of accuracy for forecasting is 0.98478981 or 98.4798981%. Thus, the model estimator obtained is able to describe the actual data pattern.
Spatiotemporal Dengue Disease Clustering by Means Local Spatiotemporal Moran’s Index
Authors: Jaya I G N M , Andriyana Y , Tantular B , Zulhanif  , Ruchjana BN 
Published: November 2019

Abstract
Spatiotemporal analysis has been used widely to explain some geographic phenomenon, especially in an epidemiology study. Spatial and temporal autocorrelation coefficients are usually used to assess the spatial and temporal dependencies in set geographic events. However, those statistics are usually computed separately and may lead to the misleading conclusion. Analysing spatiotemporal autocorrelation would be useful to understand the geographical evolution simultaneously. Spatiotemporal autocorrelation can be used to identify the spatiotemporal clustering and outlier via local spatiotemporal autocorrelation. This paper develops a method to estimate and test the local spatiotemporal autocorrelation based on the local spatial Moran’s Index. Randomization permutation test is used to obtain the p-value which is used to construct the disease clustering. The method was applied to identify the spatiotemporal clustering and outlier detection for dengue disease data in Bandung city. Based on image analysis, this method presents the better result compare than the local spatial Moran’s Index which is done for every time separately.
New class of hybrid conjugate gradient coefficients with guaranteed descent and efficient line search
Authors: Sulaiman I.M. , Sukono  , Supian Sudradjat , Mamat Mustafa 
Published: November 2019

Abstract
Hybrid conjugate gradient (CG) techniques are one of the most prominent procedure for obtaining the solution of large-scale unconstrained optimization problems. This is due to its simplicity, global convergence, and low memory requirement. Numerous modifications have been done recently to improve the performance of these methods. In this paper, we proposed new class of hybrid CG coefficients with guaranteed descent under exact line search. Numerical results are presented to illustrate the efficiency of the proposed methodscompared to other classical CG coefficients.
Experimental researches on fracture behavior of semicircular bending PMMA specimens
Authors: Zeng Guowei , Zhou Peng , Bai Fan , Wu Liang , Zheng Huasheng 
Published: November 2019

Abstract
The fracture resistance behaviors of the semicircular bending (SCB) PMMA specimens with different geometry are experimentally investigated. In order to evaluate the effect of orientation, location and right roll’s distance, a series of SCB experiments are performed on the PMMA specimens with different notch angle and location on the universal mechanical testing machine. Finally, the variation of the fracture load and the load vs. displacement relation are displayed and evaluated respectively.
Weak Point Analysis of Deepwater DST String in Service
Authors: Liu Kang , Chen Guoming , Meng Wenbo , Liu Xianyu 
Published: November 2019

Abstract
Considering the deepwater test technology, in this study, temperature and pressure loads of deepwater drill-stem tested (DST) string in string deployment, pressure perforation, flowing test, and shut-in well stages are evaluated. In view of the large displacement and contact problem, a mathematical model is established for the deepwater DST string system to assess the weak point based on nonlinear contact theory. The results show that the temperature and internal pressure of DST string are mainly determined by test production in the flowing test stage. The pressure perforation and shut-in well stages are more risky for DST string in water, whereas the string deployment and shut-in well stages are more risky for DST string in downhole. With increasing test production, the stress level of DST string decreases in water and increases in downhole as a whole. Extra attention should be paid to the string units adjacent to the top, lower flex joint, hanger, and packer, which are the strength weak points of deepwater DST string. The weak point assessment method provides powerful support for operation risk management and decision-making of DST string in offshore test process.
Moisture effect on coking course of coal
Authors: Xuehong Zhang , Gaifeng Xue , Hongming Fang , Luhan Zhao 
Published: November 2019

Abstract
In order to successfully transform coking technology of moisture-free coal, which has energy conservation and environmental protection properties into production, moisture effects on coking course of coal was researched and the caking indices; plastometric indices, Gieseler fluidity, and coke optical texture of coking coal under different moisture proportions were studied. The result showed that when the moisture proportion of charging coal was decreased, the voids among coal particle minished. The size and proportion of pores produced by moisture’s volatilization declined, the expansion pressure produced in coking course increased and inborn plastometric layer’s spreading property was improved. All these made caking indices of coking coal take on increasing trend. They also made the shrinking value x decrease, the solid-soft interval increase, the fluidity and the spreading property of layer among anthracite be improved and coke tight property be improved. These provided many useful conditions for coke with good quality and the decrease of coking wastewater.
Effect of Hydrogen Corrosion on Key Mechanical Properties of 45 Steel
Authors: Ma Luxiao , Guo Chong , Wang Jing 
Published: November 2019

Abstract
To study the influence of hydrogen corrosion on mechanical properties of materials, this paper adapted 45 steel to determine each mechanical property parameter of 45 steel by tensile test method under different corrosion concentration and time as well as different states, including non-hydrogen escape and hydrogen escape. And the changing rule of strength index and plastic index of material during the process of hydrogen corrosion was obtained. The result shows that the strength index of material just has few changes, its yield strength fluctuates within -5.6Mpa and 7.8Mps and tensile strength reduces by about 2%. After corroding, the plastic index reduces obviously and it is mainly affected by corrosion concentration whether it is in non-hydrogen escape state or in hydrogen escape state. Despite that the plastic index of hydrogen escape state is higher than that of non-hydrogen escape state, it still is less than the original value. In the inner of metal, the influence of diffused hydrogen on plastic index is stronger than that of solid solution hydrogen.
Numerical simulation and experiment of wrinkle for multipoint thermoforming of resin sheet
Authors: Peng Heli , Chen Xu , Liu Haijian 
Published: November 2019

Abstract
The multi-point thermoforming (MPTF) process of resin sheet is introduced, the glass transition temperature of polycarbonate (PC) sheet is tested, and the material parameters of PC sheet are got. Numerical simulation of wrinkle for spherical part is carried out by ABAQUS, and the generated result of wrinkle with MPTF is elaborated. The effects of thickness, forming temperature and spherical radius on wrinkle are investigated by lots of numerical simulations, the outlines of spherical part with different thicknesses are extracted, and the maximum wrinkling value of spherical part with different forming temperatures and spherical radii are calculated. Then the multi-step multi-point thermoforming (MSMPTF) is chosen to depress wrinkle, and series of numerical simulations are put forward to get the forming step of non-wrinkle. Finally, MSMPTF experiment is done. Consequently, the spherical part has good outline shape, which illustrates that the MSMPTF technology is feasible to depress wrinkle.
Early mechanical properties of high calcium fly ash cement soil
Authors: Yu-ping Dong , Yu-pei Zhang , Yu-xiang Liu 
Published: November 2019

Abstract
In order to improve the comprehensive utilization rate of industrial waste fly ash materials, this paper attempts to add high calcium fly ash to cement soil to study the effect of high calcium fly ash on the performance of cement soil materials and its strength formation mechanism. By designing the cement soil strength test and the excitation test, the early stage strength of the cement soil material can be improved by adding a certain amount of high-calcium fly ash and activator, which provides the application of high-calcium fly ash in engineering. It is also a supplement and improvement of the theoretical application system of fly ash materials.
A Novel Robust Adaptive Intelligent and Compound Control of an Adaptive Neural Network, SMC, FLC and PI for Robot Manipulators
Authors: Vu Duc Ha , Huang Shoudao , Tran Thi Diep 
Published: November 2019

Abstract
In this paper, a new compound control scheme is proposed for robot manipulators (RMs) based on radial basis function neural network (RBFNNs), sliding mode control (SMC), fuzzy logic control (FLC) and proportional–integral (PI) controller. In this control scheme, the filtered tracking error is the input of the RBFNNs update laws, SMC, FLC and PI controller. The RBFNNs uses three-layer to approximate uncertain nonlinear manipulator dynamics. A robust sliding function is selected as a second controller to guarantee the stability and robustness under various environments. The FLC as the third controller completely removes the chattering signal caused by the sign function in the SMC. By using additional PI controllers, the goal of RMs tuning is to minimize tracking performance and overshoot can be realized. Simulation results highlight performance of the controller to compensate the approximate errors and its simpleness in the adaptive parameter tuning process. To be concluded, the controller is suitable for robust adaptive intelligent control and can be used as supplementary of traditional neural network (NN) controllers.
Preparation and study of chemical functional materials for wet mixed mortar
Authors: Zhang X F , Fang Y H , Ke Y L , Zhong S L N , Lai H Z , Guo S Y Q , Ma X X 
Published: November 2019

Abstract
The wet mixed mortar chemical functional material PC-2 was synthesized by monomers including 4-hydroxybutyl vinyl ether polyoxyethylene ether, acrylic acid, 4-vinylbenzenesulfonic acid and mono-2-(methacryloyloxy)ethyl succinate.The effects of different side chain lengths, the dosage of 4-vinylbenzenesulfonic acid and mono-2-(methacryloyloxy)ethyl succinate on the properties of wet-mixed mortar chemical functional materials were investigated. It had been verified by test that compared with PC-1, PC-2 could effectively reduce the consistency loss rate of wet mixed mortar, improved the water retention rate of wet mixed mortar, the tensile bond strength of 14d and the compressive strength of 7d and 28d. In the process of pumping and spraying construction, PC-2 had better performance and coud meet the requirement of continuous supply.
Research on Long-distance Non-contact Surface Defect and Crack Detection System in Civil Engineering Structures
Authors: Li Zhang , Linglong Zhou 
Published: November 2019

Abstract
Cracks are the result of excessive internal stress released by concrete materials. Cracks reduce the peak stress of the section. Therefore, the deformation energy stored in the structure is lower than a certain limit. Reducing the internal deformation energy by cracking is the inherent characteristic of concrete materials. Many concrete structures will have different degrees and forms of cracks, which is a quite common phenomenon. Cracks have become a common disease of concrete structures, which has long been a technical problem for construction engineers. Traditional crack detection methods of concrete bridges can not meet the needs of modern bridge detection. Based on this, this paper presents a long-distance non-contact surface defect and crack detection system, which is an economical and effective new method for bridge disease detection. This paper analyses the working principle and workflow of the detection system.
Practical Exploration of Virtual Simulation Experiment Teaching of Ceramic Art Design
Authors: Jing Chen 
Published: November 2019

Abstract
With the continuous development of network technology in China, the teaching of ceramic art design needs the application of new technology and equipment. The application effect of virtual simulation technology in ceramic art design teaching is remarkable. It is a new trend of experimental teaching reform to introduce virtual simulation technology into experimental teaching of higher education. This paper expounds the reform ideas and concrete methods of virtual simulation experiment teaching of ceramic art design from the aspects of characteristic virtual simulation experiment resources construction, virtual simulation experiment teaching methods and evaluation system construction, and provides a new idea for the development of ceramic experiment teaching informatization.
Effect of different blending ratio of waste polypropylene hybrid fiber on crack resistance of recycled concrete beams
Authors: Pei Chang-chun , Cui Xian , Chi Cui-ping 
Published: November 2019

Abstract
In order to improve the reuse efficiency of construction waste, industrial waste and textile waste, this study mixed the waste polypropylene fiber with polyacrylonitrile fiber in a certain proportion, and studied the influence of different blending ratio of hybrid fiber on crack resistance of recycled concrete beams. The experimental results showed that the mixing of hybrid fibers not only improves the basic mechanical properties and strength of recycled concrete test blocks, but also effectively inhibits the generation and development of cracks, and improves the crack resistance of recycled concrete beams. The article proposes the formula of maximum crack width in the limit state of normal use of hybrid fiber recycled concrete beams by theoretical analysis.