bluuebunny/crossref_metadata_2025 huggingface dataset:
Aplication of Hybrid Method for Superior cattle selection using Decision Support System
Authors: Sumaryanti L , Nurcholis  , Lamalewa Lusia
Published: December 2021

Merauke is one of seventeen districts selected for strengthening beef cattle breeding activities to provide livestock germs, especially for local livestock, through domestic procurement. The sustainability of domestic beef production supplies must be supported by the availability of quality beef breeds. Superior beef cattle are one of the determining factors and have a strategic value in the effort to develop beef cattle. Criteria for evaluating the quality of cattle breeds, including body size or morphology, health and defects in livestock, are in accordance with Indonesian national standards for good beef cattle breeding guidelines. Selection of cattle breeds is done by the traditional breeders community only by visually paying attention to the size of cattle. This study aims to develop decision support tools for farmers in selecting prospective high-quality beef cattle, to analyze the criteria data for cattle using a combination of two methods; AHP and SMART, that alternative solutions can be obtained that will be recommended to farmers. The local beef cattle of Merauke that are used as research samples are PO cattle, system provides information on bull superior which farmers can use as supporting information in making decisions.
Redesign Prototype of Fintech Application
Authors: Doni A F , Negara Y D P , Wulandari Eka Retno , Mustofa Muhamad Zainul
Published: December 2021

The development of Fintech's business in Indonesia helps maximize the use of technology to change, sharpen, or improve various financial aspects ranging from payment methods, transferring funds, obtaining funds, loans to asset management can begin to be accelerated and shortened using technology. However, considering technology that is not well prepared will have an impact on a poor user experience. The DANA application still requires UI / UX difficulties on transactions so it does not meet user expectations. Assessing user-centered design can help in user-related issues. Supporting user-centered design has been supported by various techniques, methods, tools, procedures and processes that help design interactive systems that are more user-centered. Data mining methods used are interviews with end users and literature studies. New design and prototype recommendations according to usability test results. A total of seven participants tested the usability of the new transaction prototype. The expected results of this design help overcome/control the user in conducting transactions.
Tobacco Farming Mapping To Determine The Number Of Plants Using Contour Detection Method
Authors: Rahmawati Diana , Alfita Riza , Ulum Miftachul , Murdianto Dedek
Published: December 2021

Indonesia’s climate has suitable for tobacco growth. tobacco plants can live in drylands. Tobacco is planted optimum with a size of 100cm x 70cm. The right size is used to count the amount of tobacco that will be planted according to the area of the land. Technology developed to help the farmer to monitor their crops and yields, by using image processing. Farmers can count easily without having to go to the field to calculate manually. In our research, image processing is used combined with knowledge base data. Images taken using drones, then be processed using image processing using the contour detection method to count the number of a tobacco plant. The results of 80 times system testing, which is using 4 parameters, 20 samples for each parameter. The success rate of the first test was 86.597% with a 13.402% error rate. The second test’s success rate is 87.63% with a 12.306% error rate. of the third test obtained an 87.033% success rate and an error rate of 12.966%. The fourth test results from an 85.431% success rate and 14.56% error rate.
The Level of Achievement for Assessment of Smart City in Smart Technology: A Literature Review
Authors: Sitna Hajar Hadad , Assaf Arief , Lita Asyarif Latif
Published: December 2021

There are many concepts to smart cities, but in general, a smart city is a combination of the use of Information and Technology (IT) with various dimensions to increase efficiency, transparency and service quality. The dimensions of smart cities most popular are six dimensions, namely smart mobility, smart living, smart environment, smart people, smart government, and smart economy. Some literature only mentions the role of IT in the smart technology dimension but has not explained the level of achievement indicators for the smart technology dimension. The dimensions of smart technology and indicators of achievement level are carried out using a Systematic Review (SR), where more than 7.302 papers were found that match the topic and then divided into the 20 main studies based on SR protocol. The indicator of the level of achievement of the smart technology dimension in a smart city is divided into four parts, namely the use of sensors in the smart city, integration between applications (application layer), the use of technological innovations in the intelligent layer such as the IoT, big data, and cloud computing etc., and to improving the quality and scope of applications, increasing the use of AI and engagement with all public stakeholders.
Web-Based Urban Village Information System Development
Authors: Khozaimi Ach , Negara Yudha Dwi Putra , Syakur Ali
Published: December 2021

The development of increasingly advanced and adequate technology so that information can be accessed quickly, precisely, up-to-date, and accurately has prompted the creation of a system that makes it easier for us to retrieve information anywhere and anytime. One area that is developing is population. So that population data can be recorded properly, it requires good data management or administration. Administrative implementation is still carried out in a traditional manner so that various obstacles arise. Therefore, it is necessary to develop an integrated system for population administration. The stages to develop the Urban Village Data Information System are the data collection stage, the application development stage, and the application testing stage. The design of information systems uses the Waterfall method. The Waterfall method takes a systematic and sequential approach. An Information System has been developed that has been used to assist Urban Village Officers to manage village data. The village information system has the convenience of running it. The Village Information System is easy to use and understand. The Urban Village information system is very helpful for the community, it is also fast and stable.
Implementation of Backpropagation Artificial Network Methods for Early Children’s Intelligence Prediction
Authors: Budiman I , Mubarak A , Kapita S , Abdullah S Do. , Salmin M
Published: December 2021

Intelligence is the ability to process certain types of information derived from human biological and psychological factors. This study aims to implement a Backpropagation artificial neural network for prediction of early childhood intelligence and how to calculate system accuracy on children's intelligence using the backpropagation artificial neural network method. The Backpropagation Neural Network method is one of the best methods in dealing with the problem of recognizing complex patterns. Backpropagation Neural Networks have advantages because the learning is done repeatedly so that it can create a system that is resistant to damage and consistently works well. The application of the Backpropagation Neural Network method is able to predict the intelligence of early childhood. The results of the calculation of the Backpropagation Artificial Neural Network method from 42 children's intelligence data being tested, with 27 training data and 15 test data, the results obtained 100% accuracy percentage results.
Ordering Size Optimization of Raw Material to Minimize Inventory Costs using Wagner-Within Algorithm and Silver-Meal Methods
Authors: Ernawati Dira , Dewi Sinta , Sari Ni Ketut , Budianto Kurniawan
Published: December 2021

Inventory is one of the current assets that can be classified as company assets. But in reality, inventory often turns into an operational problem that can affect the company's overall performance. This problem occurs due to the incorrect determination of the amount of inventory. Both excess and shortage of inventory can lead to cost overruns. This study applies the Wagner Whitin Algorithm and the Silver-Meal method in the lot-sizing process and the ABC (Always Better Control) method in determining the classification of raw materials at PT. X. Using the ABC method, it is known that the ADC-12 Ingot item has a very significant effect to inventory. Inventory optimization using the Wagner Whitin Algorithm and the Silver-Meal method resulted in the optimal frequency of ordering ADC-12 Ingots is 9 times and the total inventory cost is 994,098,000 IDR as well as inventory cost savings of around 18,403,180 IDR or 1.8% of the cost of existing inventory.
Evaluation of The Facility layout on The Fried Onion Production Process
Authors: Hidayat Rachmad , Salimah Shofi fitrotis , Jufriyanto Moh. , Khaqiqi M.Firman
Published: December 2021

Analysis of the design of the facility layout can improve the performance of production lines such as decreasing congestion levels, minimizing material handling costs. PT. XYZ is one of the fried onion companies has constraints on the material handling system that is less efficient because it takes a long time in the process. Therefore, there will be improvements to the layout of PT. XYZ to increase productivity and shorten the time of the production cycle. The method used is From to Chart the method is a conventional technique commonly used for planning factory layouts and moving goods in a production process. From the results obtained that the proposed layout is better than the initial layout with a higher flow efficiency value of 86.18%. The proposed layout utilizes vacant land, so that the production flow does not repeat and does not rotate far, so that the distance between the areas is getting closer.
Design and Build Models of Banana Stem as Material Substitution for Sustainable Manufacturing
Authors: Rizal Reda , Br Ginting Sargi
Published: December 2021

This research was motivated by the existence of environmental pollution problems caused by manufacturing activities that use styrene plastic materials as part of the packaging for electronic products. To solve these problems, innovative uses of environmentally-friendly materials from natural resources are necessary. The substitution of natural materials for the synthetic materials used in manufacturing is vitally important in the effort to eliminate the negative effects of environmental pollution. The use of trial-and-error methods to create and test replacement materials derived from renewable natural resources will allow sustainable manufacturing development. In this study, we assessed the feasibility of replacing styrene plastic materials, which commonly are used in the packaging of manufactured goods, with waste materials from banana stems so that the packaging of manufactured goods can be an environmentally-friendly product. The resulting banana stem of new and renewable material substitution for sustainable manufacturing, namely the M4 + T + P3 + A + t6 model. Micro-biological banana stem material is broken down easily in the soil, so this material does not disturb the environment, while styrene materials do not break down in the soil. The implication of this research is the packaging of manufactured products can be sustainable.
Epidemic Model Analysis of Covid-19
Authors: Hidayat Dayat , Nugraha Edwin Setiawan
Published: December 2021

Covid-19 is a very extraordinary case not only in one country but all countries in the world. The number of deaths caused by Covid-19 is very large and the rate of spread of this disease is very high and fast. In this paper, we perform an analysis of a covid-19 epidemic model. This model is a development of the SEIR model in general which is equipped with a Quarantine (Q), Fatality (F) compartment, and there is a separation between detected and undetected infected people (I). Our analysis shows that there are two equilibria, namely, disease free equilibrium and endemic equilibrium. by using, Lyapunov function, we demonstrated that disease free is globally asymptotically stable if R0 < 1, and disease-free becomes unstable if R0 > 1. This result reveal that the intervention of infection rate and quarantine process are important to control and achieve global stability of disease-free equilibrium
The Dynamics and Harvesting Effect Population One Prey Two Predator with Schooling Behavior
Authors: Pratama Rian Ade , Ruslau Maria F. V. , Suryani Dessy Rizki
Published: December 2021

This paper, the model considered is a predator-prey model for an exploited population. Predator and prey species in the offered concept have schooling characteristics. The characteristics of schooling are very similar to behavior in natural ecosystems. Based on the equilibrium analysis obtained five equilibrium points. The equilibrium point is the only one that satisfies the equilibrium model based on the Routh-Hurwitz criteria. Meanwhile, harvesting effort using the chosen equilibrium point was also calculated in the study. The principle of bionomic equilibrium is a method of showing the results of harvesting as a parameter control. Numerical simulations are also carried tor to validate the findings in the research discussion. Parameters taken from assumptions and references become important and critical references. Trajectories show a population of prey and predator one population that continues to be sustainable despite harvesting efforts. Meanwhile, different trajectories are shown by the population of two predators, which experienced a decrease in population growth. Harvesting attempts carried out on predator two continuously until a certain time will result in serious extinctions.
Binomial Approach for The Valuation of Employee Stock Option with some features: Vesting Period, Exit Rate, Reload, and Reset
Authors: Artiono Rudianto , Hidayat Dayat
Published: December 2021

An Employee stock option (ESO) is one of compensation that given by company to their employee. It gives right to the employee to buy companies stock in the future with special price that have been agreed when the options were granted. In general, the valuation of ESO pricing is different with other option pricing. ESO have some features which accommodate company importance and also consider employee behavior. This article aimed to apply the binomial approach for the valuation of ESO by considering some features such as a).Vesting period, which is waiting time to exercise the option, b). Exit rate, which is feature that consider employments shock, c). Reload, a feature that give a new option after the old one had been exercised, d). Reset, a feature that doing reset on the agreement in ESO if stock in “out of money” condition. The valuation of the ESO price have been derived from the five possibility of payoff with consideration of each features involved. This study gave the valuation of ESO which consists of two areas, namely the ESO price after vesting period and ESO price at vesting period.
Profile of Argumentation Ability of Undergraduate Students In Chemistry Education Based On Non-Routine Problems
Authors: Rusmini Rusmini , Suyono Rudiana Agustini
Published: December 2021

This study aims to determine the profile of the argumentation ability of undergraduate chemical education students. The research was conducted by giving 3 questions based on non-routine problems. In these questions, questions are given that demand statements of claims, data, warrants, backings, qualifiers, and rebuttals. The answers of 47 students were analyzed using descriptive qualitative analysis techniques. The results of the analysis show that the students' argumentation skills are included in the type of argumentation without rebuttal. Based on the rubric of the argumentation level without rebuttal, it shows that most of the students' abilities are at level 2, namely being able to make claims, but the data, warrants, and backing used are quite good in supporting the claims. The results of the distributed questionnaires showed that most of the students had not mastered argumentation. Experiencing the rigors of thinking in working on argumentative questions makes students motivated to study further. These findings will be the basis for the need to train students' argumentation skills with various methods so as to improve students' argumentation skills.
Design and Analysis of The Strength of Rice Transport Vehicle Frames
Authors: Parenden Daniel , Cipto Cipto
Published: December 2021

Merauke Regency is one of the largest rice producers in Papua Province with a total production of 344,192.32 tons in 2020, a harvested area of 61,584 ha and a rice productivity of 5.59 tons/ha. Agricultural development in Merauke Regency is supported by the availability of agricultural land and the modernization of agricultural equipment. The post-harvest process is the final phase that is key to success, so it must be handled properly to achieve maximum results once the post-harvest rice begins with the rice harvest. The rice harvest must be supported by a robust transport vehicle in wet and muddy fields. Vehicles with caterpillar drive wheels are compatible because the ground pressure is lower. The design of the rice transport vehicle selects the track wheel type as the drive wheel so that it can be used on wet and muddy surfaces. The vehicle chassis is designed for the transport of 1000-1500 kg of rice. The construction and analysis are simulated with Autodesk Inventor software; the Chasis model is analyzed for strength using the finite element method.
Hydrodynamic Analysis in Redesigning a Monohull Passenger Ship into a Catamaran
Authors: Giyan Mitari Ivory , Sulistyawati Wiwin , Joko Suranto Purwo
Published: December 2021

In line with technological developments, many studies have led to the factors that consider hull shape planning. Therefore, innovations in hull form planning are the primary basis for obtaining a hull that is considered efficient in reducing ship resistance and fuel consumption. This study aims to modify the design of a monohull and transform it into a catamaran while maintaining the total length and Displacement ratio. The ship model used is the Monohull passenger ship with a rounded shape and modified to become a catamaran with a chine shape. The hull chine symmetrical was determined by stagger to the length ratio of S/L 0.3. The hydrodynamic investigations and calculations of models using Computational Fluid Dynamic (CFD). Analysis hydrodynamic on both hulls carried out on the components of total resistance, viscous resistance, friction resistance, and wave resistance with variations of Froude number: 0.3: 0.5: 0.7: 0.9 and
1.2. From the results of the analysis, it is found that the calculation of the coefficient of resistance on the catamaran with the Chine hull is smaller than the monohull. Fn 0.7 at S/L 0.3, the catamaran produces a resistance coefficient that is more favorable than the other speeds.
Test Equipment Adding Electric Supercharger on Injection Machine for Biofuel Optimization
Authors: Umami Mahrus Khoirul , Annisa Rullie , Umam Faikul , Budiarto Hairil , Irawan Ibnu
Published: December 2021

One of the problems that occur in our earth is air pollution and the depletion of fossil fuel stocks. Researchers want to make research on how the fuel burns completely, so that the resulting exhaust gas is environmentally friendly. In addition, this research is expected as an education and comparison before and after the turbofan is given. This study will control the AFR (Air Fuel Ratio) in the intake air to get the right ratio of fuel to air stoichiometry. By controlling the air intake into the engine and adding a turbofan using the PID method. The way the turbofan works is using the lamba sensor as system input, then the value of the lamba sensor is entered into the PID method. From the PID value will determine the speed of the brushless motor which aims to get the best AFR. By looking at the lambda sensor output which is close to the setpoint of 0.5, it is expected to produce a more perfect mixture of air and gasoline.
Analysis of Wettability and Surface-Roughness of Titanium Grade 2 in Milling Process
Authors: Yusron Rifky , Mufarrih AM. , Arif Saiful , Qosim Nanang , Emzain Zakki
Published: December 2021

Titanium Grade 2 is a material that is widely applied in biomedical implant materials. Titanium Grade 2 has a good corrosion resistance and good biocompatibility in the body. However, due to the low thermal conductivity, it is necessary to select the appropriate machining parameter in order to produce a good surface roughness value. The purpose of this study was to determine the surface characteristics of Titanium Grade 2 which include wettability and surface roughness on milling process. The research design used the full factorial L9 method, with 2 factors and 3 levels. The spindle speed variable has a p-value of 0.039 and the feeding speed variable has a p-value of 0.025. This shows that the two independent variables have a significant effect on the surface roughness response. The lowest surface roughness can be achieved by setting the spindle rotation at 700 rpm and the feed speed at 25 mm/min. All specimens showed contact angle measurement results below 90ᵒ, which means hydrophilic. Titanium Grade 2 material with this milling machining process can be used as an alternative to semi-permanent implant fabrication methods such as maxillofacial bone implants, bones of the fingers and toes, and others.
Investigation The Effect of Clearance and Body Weight on The Contact Pressure of Metal on PCU Hip Prosthesis using Finite Element Method
Authors: Dwi Lestari Wahyu , Edahwati Luluk , Saputro Wiliandi , Khairul Faizin Ahmad , Dzaky Issafira Radissa , Shanti Dera Nurmala
Published: December 2021

A common problem with artificial hip replacements is increased wear of the material in contact. Materials that are in contact result in contact pressure caused by the patient's daily activities so that it triggers wear. This study adopts a finite element method (FEM) to predict wear of the artificial hip joint, by studying the behavior of a hip joint prosthesis that has clearance under a certain load. The aim of this study was to observe contact as a function of clearance and body weight. The modeling uses metal as femoral head and polycarbonate urethane (PCU) material as the acetabular cup. Contact modeling as a hard material in contact with a deformable material. Four variations of clearance (0.001, 0.005, 0.01, 0.016) and three variations of body weight (500N, 700N, and 1000N) were used in this study. The simulation results show that the lower the distance and weight, the lower the contact pressure.
A Design of Centrifugal Pumps With 250 Liters / Second Capacity for Water Supply at Boarding School in Cibubur, Jakarta Timur
Authors: Prayitno Sugeng , Sudjasta Bambang , Hatuwe M. Rusdy
Published: December 2021

This research was motivated by the existence of environmental pollution problems caused by manufacturing activities that use styrene plastic materials as part of the packaging for electronic products. To solve these problems, innovative uses of environmentally-friendly materials from natural resources are necessary. The substitution of natural materials for the synthetic materials used in manufacturing is vitally important in the effort to eliminate the negative effects of environmental pollution. The use of trial-and-error methods to create and test replacement materials derived from renewable natural resources will allow sustainable manufacturing development. In this study, we assessed the feasibility of replacing styrene plastic materials, which commonly are used in the packaging of manufactured goods, with waste materials from banana stems so that the packaging of manufactured goods can be an environmentally-friendly product. The resulting banana stem of new and renewable material substitution for sustainable manufacturing, namely the M4 + T + P3 + A + t6 model. Micro-biological banana stem material is broken down easily in the soil, so this material does not disturb the environment, while styrene materials do not break down in the soil. The implication of this research is the packaging of manufactured products can be sustainable.
Mangrove Forest Management Model at Payum Merauke Beach
Authors: Amir Astaman , Sajriawati Sajriawati
Published: December 2021

The implementation of the coastal resource management model must be adjusted to the characteristics of the coastal communities in the coastal area. This study aims to analyze the management model of mangrove forests in Payum Beach. The research location is Payum coastal area, samkai village, Merauke district. The population in this study are coastal communities, traditional leaders and stakeholders associated with mangrove forest management. Sampling uses a purposive sampling technique, which will be adjusted to the information needs of the study. Data collected includes mangrove forest management. Data analysis using descriptive qualitative. The results showed that there was cooperation between coastal communities and the government in carrying out mangrove rehabilitation in the process the government tended to only inform the community about the decisions that would be made. The management of mangrove forests on Payum beach adopts an instructive co-management management model.
Molecular Identification of Pathogenic Bacteria in Kantong Semar Plants (Nepenthes Gracillis) Based on Mitochondrial 16S rRNA Gene
Authors: Agus Prasetio Rahmad , Isnawati  , Rahayu Dwi A.
Published: December 2021

Nepenthes is a protected and unique carnivorous plant because it has a fluid-filled pouch at the end of the leaf that serves as an insect trap. The existence of Nepenthes gracillis in ecosystems is endangered, one of the reasons is caused by the attack of pathogenic bacteria, so it is necessary to identify pathogenic bacteria that attack N. gracillis as an effort to handle. The purpose of this study was to identify pathogenic bacteria in N. gracillis using 16S rRNA gene sequencing results. This study aims to identify the 16S rRNA sequence and phylogenetic of bacteria attached in N. Gracillis leaves, and the identification was confirmed using molecular data. The construction of phylogenetic topology was made based on ML and NJ method using Kimura-2 parameter model. Subsequently, molecular characterization and identification was conducted based on 720 bp of 16S rRNA gene similarity, sequence variation, genetic distance, and phylogenetic topology. According to the results, the bacteria species attached in N. Gracillis identified as Lelliottia nimipressuralis, and closely related with Erwinia aphidicola. Genetic distance between sample and related species was 0,0173, with 98,26% similarities, then strongly 100 bootstrap analyses. Thus, this study provides more information for Lelliottia nimipressuralis phylogenetic studies using different marker.
Optimizing Edible Film from Corn Cobs with Surface Response Method
Authors: Sari Ni Ketut , Hayu Regita Adelia , Wahyu Dwi Putra Dimas , Ernawati Dira , Wurjani Widi
Published: December 2021

The increase in plastic production worldwide has created quite a serious environmental problem. Edible film is an alternative packaging that can decompose naturally, one of the materials that can be used to make edible films is starch. This study aims to determine the composition of corn cob starch and plasticizers that can produce edible films with the best properties. The starch used is derived from corn cobs and the plasticizers used are glycerol and sorbitol. The edible film in this study was made by the casting method by dispersing the raw materials, heating the mixture, printing the edible film and drying the edible film. This research was conducted with variations in the corncob of 5, 6 and 7 in grams and the variation of the ratio of glycerol to sorbitol plasticizer is 2:8; 3:7; 5:5; 7:3; 8:2 (ml). The more starch content increases the thickness of the edible film and tensile strength, but the elongation and water vapor permeability decreases, the best edible film is obtained at the glycerol-sorbitol composition ratio of 5:5 with the amount of corncob starch of 7 grams.
An Evaluation of the Garbage Impact on Coastal Environment Conservation at Kora-Kora Tourism Kapataran Village, Lembean Timur District
Authors: Maliangkay Denny , Kumaat Joy , Tewal Trenny
Published: December 2021

This study aims to describe how the impact of waste on tourism visits, and public health around the Kora-kora coast. Get an idea of why tourist visits on the Kora-kora coast have decreased dramatically and explain how to preserve the coast for the development of marine tourism. To enlighten the public on how to properly dispose of waste in order to maintain environmental health around the Kora-kora coast. The method used is descriptive qualitative and provides up-to-date information so that it is useful for the development of science and can be applied more to various problems From the results of the discussion, several conclusions were obtained as follows; There are several factors that cause people to throw garbage on the coast of Kora-kora Kapataran village, among others; There is no designated place for garbage disposal or landfill around Kora-kora beach; People are reluctant to transport garbage to a place that is a bit far from settlements; Garbage transportation facilities do not exist; Do not have a garbage collection location. People often throw garbage on the beach as a shortcut. Lack of socialization and government support regarding waste management and processing.
The Sensitifity and Elastisity Model Approch to The Probality of Wooden Boat Route Selection in Archipelago Area
Authors: Marsaoly Bustamin S , Marsaoly Nurmaiyasa , Gaus Abdul
Published: December 2021

This study aims to analyze the effect of travel costs Wooden Boat, travel time, delay time and service frequency on the selection of wooden ship routes using the stated preference method. Two variables, dependent and independent variables were analyzed using linear regression analysis, correlation and sensitivity model. From the results of the sensitivity analysis, the travel cost of attribute variable is the most sensitive to the probability of route selection is travel time. The changes of travel time will changes the probability of choosing a route which relatively largerer than changes the other attributes. For the elasticity analysis of the model for each attribute resulted the probability of choosing route 2 is more sensitive than route 1. This is indicated by the cross elasticity value which is greater than the direct elasticity value. The direct elasticity values for the attributes of cost, travel time, delay time, and service level are -0.5248, - 0.1667, -0.0845, and 0.1182 respectively. Meanwhile, the cross-elasticity values for the attributes of cost, travel time, delay time, and service level are -0.6477, -0.3979, -0.2016, and 0.2821
Planning of the Clean Water Distribution System Pipeline at Griya Arwana Lestari Housing, Merauke Regency
Authors: Utary Chitra , Doloksaribu Abner , Andang Pasalli Daud , Hairulla Hairulla , D Putra Dimas
Published: December 2021

Griya Arwana Lestari Housing Merauke Regency is one of the housing estates located in the area around the Merauke coast. The majority of residents of Griya Arwana Lestari housing use rainwater sources and buy water from water tanker trucks for their clean water needs. When the dry season arrives, the price of water from tanker trucks is quite expensive, making it difficult for residents of Griya Arwana Lestari housing to get clean water. So it is necessary to plan a clean water supply network system. The purpose of this study is to find out how much the discharge needs of clean water in Griya Arwana Lestari housing and find out what the diameter of the main pipe and secondary pipe are used. The method used is qualitative and quantitative based on field observations and counting the number of occupants in sustainable arowana housing then analyzing the need for clean water and then determining the diameter of the main pipe and secondary pipe. The results in this study are the required discharge in the housing is 3,973 l/s and for the main pipe diameter is 4 inches and for the secondary pipe 1 inch.
Analysis of Unconfined Compressive Strength in Clay Mixed with Sand
Authors: Budianto Eko , Limbong Pamuttu Dina , Tatai Simon , Andang Passalli Daud , Hairulla Hairulla
Published: December 2021

Clay soils are soils that have high shrinkage potential and have good carrying capacity in water unsaturated conditions but poor in water-saturated conditions. Clay soil has a low carrying capacity, so to increase the carrying capacity of the soil it needs to be stabilized by using an added material which is sand. Land used for 100% disturbed soil, 95% disturbed soil + 5% sand, 90% disturbed soil + 10% sand, 85% disturbed soil + 15% sand, with curing time 3,7,14, and 28 days. The mixture was tested using aunconfined compressive strength test instrument with SNI 03-6887-2002 method. The results of the unconfined compressive strength test showed that the increase in maximum soil strength occurred in the addition of 90% disturbed soil + 10% sand at the age of 28 days curing, which reached 1,194 kg/cm2. But the results of unconfined compressive strength increased when the mixture of 85% disturbed soil + 15% of sand reaching 1,348 kg / cm2. Based on testing that the more amount of sand is added, the higher the value of unconfined compressive strength obtained.
An Analysis The Impact Of Modern Gamalama Plaza Contraction To The Traffic Movement
Authors: Tribudiyanto Risval , Gaus Abdul , Marsaoly Nurmayasa
Published: December 2021

In this study, a descriptive method was used. From 15 equations tested, the value of Y = 2.64080272306193X2 + 4.05031889744212E-06X3+ 0.0882328648259467X4 + 0.752392757509762X5 + 22.7120066091058 with r and R values was 0.543, determinant coefficient was 0.548, significant value was 0.000 and f-count value was 111.886. From this equation, we found that the number of visitor attractions to Modern Plaza Gamalama is 15778 visitors, also increases to 17600 and 19622 for the next 5 years and 10 years. For the peak hour analysis, the volume of vehicles for the traffic was on monday at 16.00 – 17.00 WIB with 2515.4 pcu/hour capacity. The peak hour volume of vehicles was 1630.6 pcu/hour, while the peak hour volume after the square operated was 2123.32 pcu/hour for Pahlawan Revolusi Street and 3802.2 pcu/hour at Nukila Street. The provided parking capacity for four-wheeled vehicles at Plaza Gamalama Modern is for 60 cars, which cannot accommodate visitor vehicles parking. This is seen by the turnover of the four-wheel parking capacity at the beginning of the operation, namely 1.95 > 1.00. For the next 5 years, it will be 3.03 > 1.00. Meanwhile, for the next 10 years, it will be 4.70 > 1.00.
Comparison of Compressive Strength Value of Concrete Using Pumice Sand with Ordinary Sand as Fine Aggregate
Authors: Man Nu’ , Gaus Abdul , Sultan Mufti Amir
Published: December 2021

In this study, the method according to the Indonesian National Standard (SNI) was applied. The objects test in the form of cylindrical concrete in which the fine aggregate was pumice sand and ordinary sand. The test objects made were tested for compressive strength. There were 6 test objects made in this study with a size of 15 cm x 30 cm. In detail, 3 test objects were made of pumice sand, while the other 3 test objects were made of ordinary sand. The coarse aggregate for all test objects was crushed stone. The result shown the use of pumice sand as a substitute for fine aggregate can reduce the compressive strength of concrete by 23.53%. However, it can reduce the weight of concrete by 7.03%. Therefore, for construction that prioritizes weight, concrete with pumice sand as fine aggregate is better compared to concreate with ordinary sand as fine aggregate.
Evaluation of the Need for Apron Area in Sultan Babullah Ternate Airport Development Plan
Authors: Rizal Muhammad , Muhammad Darwis , Ilham Miranda
Published: December 2021

This research method was carried out by using data retrieval, namely flight data for the last five years, after which retrieval data for existing conditions, then proceed to the calculation of forecasting longterm air traffic growth, namely the next 20 years, forecasting air traffic growth for the next 20 years needs to be done to calculate the apron capacity due to forecasting an increase in the total number of aircraft movements in the apron in future.With the development of the apron to meet the needs of air traffic, the results of the analysis of the calculation of peak hours get the number of aircraft movements in the peak hours of 2039 by 14 movements, knowing the number of aircraft movements based on its class to get aircraft movements at peak hours, you get the need for a parking stand in tofu. 2039 as many as 13, the planned year 2039 with the addition of the number of parking stands by 13, then the addition of taxiways based on the forecasting results of parking stands in 2020 to 2039, it is known that the dimensions of the parking lot in 2039 for the apron are 187 m long and 83 m wide with an area. 15,621m2
Automatic method of the technical state changes model generation
Authors: Pająk Michał
Published: December 2021

One of the main objectives of technical diagnostics is identification the technical state of the machine. The technical state is described by the values of the object cardinal features. Unfortunately, during the operation process, some of the values of these features cannot be measured. It is proposed to estimate the values of the cardinal features based on their initial values and the influence of the forcing factors described by the time histories of the parameters of the operation process. Due to the limited knowledge of the correlation between operational parameters and forcing factors it was modelled in form of fuzzy Mamdani models. In the paper universal automatic method of the models generation was presented. Thanks to it, it was possible to generate the model of the technical state changes in automatic manner. The results of the usage of the generated model in case of real complex technical system can be found at the end of the paper.
Measurement of flow and pressure characteristics of combustion engine oil filters
Authors: Hujo Ľubomír , Michalides Matej , Nosian Jozef , Simikić Mirko
Published: December 2021

For the purpose of measuring the flow and pressure characteristics of oil filters used in vehicles with internal combustion engines, a laboratory test equipment was used, which was designed at the Department of Transport and Handling of the Slovak University of Agriculture in Nitra. The target information from the given measurement is the obtained data on the change of flow and pressure, based on the type of oil filter used. The contribution of this paper is information that can be used in the future in the design of new filtration equipment, as well as the creation of a system for evaluating the technical life of motor oils, in order to extend the service intervals of motor oil, monitored set of motor vehicles.
Vehicle diagnostic system of the car engine
Authors: Zinko Roman , Polishchuk Oleh , Kuliś Ewa
Published: December 2021

Support of the established technical characteristics of engines is reached by its regular service and diagnostics in particular - existence of the diagnostic programs built in the onboard computer of the car which carry out constant control of the main parameters of the engine.Based on the algorithm of vibroacoustic diagnostics, a system of vibration and vibroacoustic diagnostics of the internal combustion engine (ICE) is proposed, which can be integrated into the intelligent environment of self - diagnostics of the car (Check - Engine). The algorithm takes into account the normalized parameters and criteria for assessing the vibration state: the absolute values of displacements, velocities and accelerations and their changes.For the self-diagnostic system, it is important to develop a classifier of engine states also to determine and / or predict the failure of its parts or units. Engine vibrations can be attributed to the following types: imbalance of the 1st and 2nd order of the engine; vibration associated with combustion in the engine; auxiliary units.The analysis of a vibroacoustic signal at work of the serviceable and faulty engine is carried out, influence of various elements of a design, placement of the gauge in horizontal and vertical directions is shown on it.
Assessment of Ti6Al4V alloy fatigue properties based on specimens produced by DMLS technology
Authors: Karolewska Karolina
Published: December 2021

The Ti6Al4V alloy produced by additive methods is the most studied material, which can be attributed to its wide application and the resulting need for a thorough understanding of this material and its behavior under static and fatigue loads. For this reason, the paper presents the results of tests of the Ti6Al4V alloy produced by the additive method and in the standard smelting process. The publication contains the results of the alloy tests under static and variable loads based on strain control.
Regression model in the operation of wind turbines
Authors: Borowski Sylwester , Migawa Klaudiusz , Sołtysiak Agnieszka , Neubauer Andrzej , Mazurkiewicz Anna
Published: December 2021

The manuscript presents linear regression models used to predict the amount of energy produced in a wind turbine. As part of the own research, data obtained from the SCADA program for the Enercon E-82 wind turbine was analyzed. It has been shown that it is possible to build a mathematical model to determine the amount of energy generated from the average wind speed. This method can be used to forecast the production volume and balance the energy system. This is important due to the increasing share of renewable energy sources. The application of the developed method in practice will facilitate and accelerate the implementation of the decision-making process in electricity generation systems, while reducing the risk of error. This model can also be used to make wind turbine repowering decisions.
Methods for diagnosing defects in glued joints - a methods review
Authors: Karolewski Sebastian , Borowski Sylwester , Karolewska Karolina
Published: December 2021

The paper presents the applications of glued joints in many industry branches. The advantages and disadvantages of glued joints as well as the methods of detecting weld damage are presented. The methods of damage analysis to the glued joints were divided and explained. The most important detection techniques are the X-ray method, the ultrasonic method, the Laser Ultrasound method, the guided wave method, the electromechanical impedance method and the active thermography method. The advantages and limitations that may allow for the proper selection of the research method depending on the diagnosed material and the conditions accompanying the study were indicated.
A review of high-efficiency Pancharatnam–Berry metasurfaces
Authors: Zhuo Wang , Sun Shulin , He Qiong , Zhou Lei
Published: December 2021

Manipulating circularly polarized (CP) electromagnetic waves as desired is important for a wide range of applications ranging from chiral-molecule manipulations to optical communication, but conventional natural-materials-based devices suffer from bulky configuration and low efficiencies. Recently, Pancharatnam–Berry (PB) metasurfaces have demonstrated strong capabilities to control CP waves in different frequency domains. In this article, we present a concise review on PB metasurfaces for CP light manipulations, focusing mainly on the research works done by our own group. After briefly introducing the working principles of PB metasurfaces, we separately discuss how to construct high-efficiency PB metasurfaces in reflection and transmission geometries, and how to utilize them to control CP waves in different frequency domains, including meta-lensing, meta-hologram, and surface couplers. Finally, we conclude this review with our perspectives on future developments of PB metasurfaces.
The Development of broadband millimeter-wave and terahertz gyro-TWAs
Authors: He W. , Zhang L. , Donaldson C. R. , Yin H. , Ronald K. , Cross A. W. , Phelps A. D. R.
Published: December 2021

The gyrotron travelling wave tube amplifiers (gyro-TWAs) presented in this paper can operate with high efficiency (30%), huge powers and wide bandwidths at high frequencies that no other amplifier can provide. In principle, this is a technology that can be scaled to >1 THz and operate with 20% bandwidths. Resonant coupling of two dispersive waveguide modes in a helically corrugated interaction region (HCIR) can give rise to a non-dispersive eigenwave over a wide frequency band. The synchronism between the ideal wave and an electron cyclotron mode, either fundamental or harmonic, of a large orbit electron beam contributes to the broadband amplification. An electron beam of 55 keV, 1.5 A with a velocity pitch angle of ~1 generated by a thermionic cusp gun is used in our 100 GHz gyro-TWA experiment, which achieves an unsaturated output power of 3.4 kW and gain of 36–38 dB. The design and experimental results of the many components making the gyro-TWA will be presented individually and then the whole system will be introduced. The amplification of a swept signal by the W-band gyro-TWA is demonstrated showing its capabilities in the field of telecommunications. Furthermore, the design studies of a cusp electron gun in the triode configuration and the realization of a 3-fold HCIR operating at 372 GHz will also be displayed.
Fano resonances in the corrugated disk resonator and their applications
Authors: Chen Lin , Liu Bo , Zhu Yiming
Published: December 2021

We have experimentally excited terahertz multipolar Fano resonances in two asymmetrical metal particles: a defective corrugated metallic disk(CMD) structure and a hybrid structure consisted of a C-shaped resonator and a CMD. Furthermore, the Fano resonance modes can also be excited by the interaction between plasmonic waveguide and CMD. Our findings have shed light into the terahertz multipolar Fano resonances in asymmetrical CMD and opened the way to the design of terahertz plasmonic devices.
Quo vadis Kompetenzvermittlung zur Rehabilitation?
Authors: Mau Wilfried
Published: December 2021

Liebe Leserinnen, liebe Leser,

nach den letzten Informationen an dieser Stelle möchte ich Ihnen eine weitere
Veränderung bei den Herausgebern bekannt geben. Im Jahr 2022 wird die
Herausgeberfunktion für die Rubrik CME-Fortbildungen, die ich seit der
Einführung in dieser Zeitschrift im Jahr 2013 betreut habe, an Herrn Prof.
Dr. Axel Schlitt übergehen. Bei dieser Gelegenheit gilt mein herzlicher Dank
vor allem den Autorinnen und Autoren der mehr als 25 in diesem Zeitraum neu
erstellten CME-Fortbildungsbeiträge aus allen Indikationsbereichen der
medizinischen Rehabilitation. Mit großem Engagement ist es diesen meistens
in Rehabilitationseinrichtungen verantwortlich tätigen Kolleginnen und
Kollegen gelungen, auf Basis der besten verfügbaren Evidenz und mit
Berücksichtigung der Rahmenbedingungen in Deutschland wertvolle
Orientierungen für die Praxis zu bieten. Sie tragen dazu bei, die
Möglichkeiten und den Stellenwert der Rehabilitation in den verschiedenen
Indikationsbereichen zu verdeutlichen. Einerseits erscheint dies vor dem Hintergrund
vielfältiger Herausforderungen der Rehabilitation dringend geboten,
andererseits bieten sich dafür verschiedene Chancen, die von allen
Akteurinnen und Akteuren im Kontext der Sicherung und Wiederherstellung von Teilhabe
zu nutzen sind. Dazu gehört das aktuelle Bewusstsein politisch
Verantwortlicher für die Bedeutung der Rehabilitation am Beispiel der
Long-/Post-COVID-19-Erkrankungen, das kürzlich von einer
interministeriellen Arbeitsgruppe ausgedrückt wurde (Deutscher Bundestag -
Drucksache 19/32659).