bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Fisheries Export Commodities in Banyuwangi Regency, Indonesia
Authors: Umroh E A , Maulita W , Pangestu M D A , Islami N N , Sukidin
Published: June 2020

Banyuwangi is one of the districts in East Java that has potential in the field of fisheries. With its potential, Banyuwangi Regency is one of the leading exporters of fisheries to various countries. The export commodity in the form of fish catches, both raw fish and processed fish so that it contributes to the Regional Original Revenue (ROR). Based on this background, researchers are interested in researching about fisheries export commodities in Banyuwangi. The method used in this research is a qualitative approach with descriptive data analysis techniques. The purpose of this research is to analyze the fishery export commodities in Banyuwangi Regency, especially in the Muncar District. The results showed that Muncar Banyuwangi District had exported fishery commodities to 59 countries in the world. In 2016 total fishery export revenues reached Rp. 229,414,958,814, but in 2017 total export revenue only reached Rp. 183,473,619,534. Based on these results, it can be seen that a decrease of Rp. 45,941,339,280. This is caused by a decrease in production caused by several factors, including the influence of natural factors such as weather. In addition, the decline in export revenues from the fisheries commodity sector was also caused by external factors, among which was a decline in demand from several countries due to the country’s sluggish economy. The decline in fishery export commodities in the Muncar sub-district had an impact on the contribution of the fisheries sector in contributing to the Banyuwangi Regency’s Original Revenue. Therefore, exporting companies and the government are pursuing a number of anticipatory strategies to reduce the decline in export numbers and seek to increase exports. This research was useful and important for many municipal governments to identify the factors behind the export of fish commodities and solutions to this problem.
Analysis of the financial literacy level of Micro, Small and Medium Enterprises (MSMEs) in Jember, East Java, Indonesia
Authors: Lestari M D , Kantun S , Hartanto W , Suharso P , Widodo J
Published: June 2020

The Micro, Small and Medium Enterprises (MSMEs) are the economic actors who can support the Indonesian economy. The MSMEs need to have the ability in the field of finance (financial literacy). Capabilities in finance include financial planning, financial management, financial products, and business financing. The phenomenon that exists in Jember, East Java is still few who understand about financial literacy. This study aims to analyze the level of financial literacy among MSMEs in Jember, East Java. This type of research is a descriptive study with a qualitative approach. The subjects of this study were 40 people who were MSMEs in Jember, East Java. Data collection methods used consisted of interview methods, document methods, and observation methods. Analysis of the data used by using descriptive qualitative analysis. The results showed that the financial literacy of MSMEs in Jember was in the medium category. They should improve their understanding of personal finance, especially in the area of investment.
Efforts of young parents in meeting children’s physiological needs
Authors: Rizqiyah A Z , Sukidin  , Hartanto W , Suharso P , Wahyuni S
Published: June 2020

The purpose of this research to describe the efforts of young parents in meeting children’s physiological needs in Tanggulangin Village, Kejayan, Pasuruan. This research is a qualitative descriptive study. Determining the location of research using purposive area, determination of research subject using snowball sampling. Data collection uses observation, interviews and documentation, while the data analysis process used is data reduction phase, data presentation and withdrawal of conclusion. The results showed that the economic conditions of young parents were low. These conditions are due to their work only as abusive workers whose wages are less than the UMR. Wages received by young parents are insufficient to meet the daily basic needs and physiological needs of the child. Therefore young parents make an effort to stay alive. The efforts made by the young parents are by optimizing the resources that are owned by doing the side work and allowing their wives to work, further implementing a provident living strategy and utilizing Social networking by borrowing money to parents, relatives, neighbors when in urgent situation. These efforts are done by young parents in order to meet the needs of families and the physiological needs of children.
The policy of educators’ certification : an effort to improve quality, qualification, and teachers’ competence
Authors: Sholihah M , Ratnasari K , Permatasari Y D , Muawanah U , Fajri A N F
Published: June 2020

This paper describes the importance of educator’s certification to solve Indonesian education financial sytem which is still run by the goverment until 2020 with some additional regulations. This paper shows how the regulations are applied into the system and have some contributions on improving their quality, qualification and competence. There are some classics problems as well which are found during this research, such as: the lack of competence and quality of teachers which are caused by financial source. It is not a new problem that teachers are not paid well, from that it causes the integration of teachers to do their job because they need to have other additional jobs. This research uses qualitative research to dig more about the government efforts on improving teachers quality, qualification and competence by applying a descriptive method to explain about teachers’ certification in Indonesia, the purpose, benefits and principle, also the mechanism, criteria and some laws related to teachers quality, qualification and competence in Indonesia. The result of this study explains that the effort of the government on applying a certification system have a good impact on the quality, the qualification and the competence of teachers.
Bukit Permai tile industry in Kemuningsari village, Jenggawah regency, Jember regency in 1993 - 2018
Authors: Prasetyo P N , Sumarjono  , Marjono
Published: June 2020

Bukit Industri tile permai is a small and medium industry located in the village of Kemuningsari, Jenggawah District, Jember Regency. This tile industry is owned by a Kemuningsari villager named Pak Munawir. Pak Munawir’s establishment of the tile industry was motivated by many things. Bukit Permai tile industry as a business entity certainly has tidal dynamics in its business. The problems examined in this study include: (1) the background of the Bukit Permai tile industry; (2) the dynamics of the Bukit Permai tile industry in Kemuningsari village in 1993-2018. The research method used is a historical research method which consists of four stages, namely heuristics, criticism, interpretation, and historiography. The establishment of the Bukit Permai tile industry was motivated by two reasons, namely direct and indirect causes. The direct cause of the establishment of the Bukit Permai tile industry is the availability of abundant clay. Because the indirect establishment of the beautiful hill tile industry is to market tile production and the environment around the industry. The dynamics of the beautiful hill tile industry can be divided into three stages, namely change, development, and continuity. Changes that occur in the beautiful hill tile industry include elements of income and human resources. The development of the Bukit Permai tile industry includes elements of production equipment and raw materials. Continuity of the Bukit Permai tile industry can be seen from the continuity of the tile industry which has been hereditary and survives to this day.
The contribution of financial technology in increasing society’s financial inclusions in the industrial era 4.0
Authors: Mardiana S L , Faridatul T , Herlindawati D , Tiara  , Mardiyana L O
Published: June 2020

Entering the current 4.0 industrial revolution occurred so rapidly technological developments in various sectors of life, including in the financial sector. Technological developments that occurred in the financial sector is slowly changing the financial industry into the digital age. There has been a shift of financial institutions that are now beginning to shift towards technology-based financial institutions. One of the advances in the current financial field adaptation Fintech (Financial Technology). The increasing presence of Fintech expected the Government to boost financial inclusion. Financial inclusion is a person’s ability to accessvarious financial products that are affordable and fit the needs. The purpose of making this article is to describe Contributions Fintech in Improving Public Financial Inclusion in the Industrial Age 4.0. This journal writing using a descriptive approach through the study of literature. In conclusion, the development of digital technology is included in the financial industry, it can’t be stopped development. Through technology financial (fintech), all forms of transactions to be faster, easier, more efficient at the same time, without the need to do face to face, it will make a positive contribution to the improvement of public financial inclusion in the digital era. The affordability of access to finance for the whole society will enhance financial inclusion so that the community can help drive the economy of the State.
The urgency of using online-based learning media to enhance students’ self-directed learning and result study on accounting chapter of economics subjects
Authors: Akbar Y F , Rizal A , Tiara  , Islami N N , Hartanto W
Published: June 2020

In the 2013 curriculum structure, accounting material in economic subjects for the social sciences programs at the Senior High School level given when students are already in class XII. Those phenomena often become an obstacle for both students and teachers, because the material discussed is quite a lot while the adequate time of face-to-face learning in class is minimal. These limitations cause students to be less optimal in achieving their result study because students are still dependent on the learning process is given by the teacher in class. This article aims to explain the importance of using online-based learning media to enhance students’ self-directed learning and improve their result study on accounting chapter of economics subjects. The method of this article uses a literature review study and the discussion based on the variety of related studies to the use of online-based learning media in the form of e-learning on students’ self-directed learning and students’ result study. The use of e-learning can encourage students to learn independently to overcome the limited face-to-face time on accounting material. Self-directed learning helps students to understand accounting material quickly so that it will have an impact on increasing their result study. It concluded that the use of online-based learning media could improve students’ self-directed learning and result study on accounting chapter of economics subjects.
Education environment society buffer forest Wonoasri Betiri Meru National Park through approach participatory
Authors: Subchan W , Puji R P N , Pratama A R , Lestari R D
Published: June 2020

This research was conducted with the aim to improve the practical understanding of society buffer forest Wonoasri Betiri Meru National Park design with the participation of they directly to carry out various ecological improvement activities by adding the amount of productive endemic vegetation such as durian, langsep, candlenut, grip, Java chili and pepper. Besides that, life skills are improved in order to increase community economic income such as animal feed, raising rangrang ants, herbal medicine making, natural color batik skills with animal and plant theme Meru Betiri National Park such as Javanese eagle motifs, Raflesia flowers, Javanese tiger claws, and so on, and other life skills improvement. The study was conducted for 15 months from 2016 to 2018. The results showed that the provision of environmental education that was designed in a participatory manner in the ecological community of Wonoasri had increased as follows. Soil fertility increased (from less than 1 to 1.3%), the addition of edemic tree stands to 91,824 seedlings, the formation of a land management understanding of 451 land tenure farmers, increased kabon uptake (from 974 tCO2eq to 1,913 tCO2eq), increased oxygen production (from 842t to 871t), plant diversity and Arthropods (from low to medium diversity, H = 1 to H = 2.5). As for aspects of life skills, there was an increase with the formation of 8 economic clusters
Aceh tsunami and government policy in handling it: a historical study
Authors: Danugroho A , Umamah N , Marjono  , Sumardi  , Pratama AR
Published: June 2020

Tsunami occurred in Aceh in 2004 was determined by the Government as a national disaster. The criteria supported Aceh Tsunami as a natural disaster to be determined as national disasters are (1) The victims and Losses incurred after Aceh Tsunami in 2004 and (2) The Public Service condition after Aceh Tsunami in 2004. Aceh Tsunami caused many problems that the government had to solve. These problems included regional governments that were not operating properly, logistics vacuum, ongoing armed conflicts with GAM, the rejection of international assistance in terms of military, disaster management agencies had been formed, disaster management laws did not exist, and state budget of 2004 was not available for Aceh Tsunami emergency response. This research used historical methods with the following steps: heuristics, criticism, interpretation, and historiography. The results of the research were the processes and efforts undertaken by SBY Government in handling the Aceh Tsunami after the issuance of Presidential Decree Number 112 of 2004. The lessons obtained from Aceh Tsunami handle can be utilized by Regional Government or Central Government for disaster mitigation, namely (1) allocating resources for risk mitigation; and (2) disaster preparedness is an important investment for a country.
Afdeeling Djember: bureaucratic history of Jember during the Dutch colonial era 1883-1928
Authors: Aunurrofiq F , Sumarjono  , Swastika K , Na’im M , Surya R A
Published: June 2020

The bureaucratic system in Indonesia initially began with a traditional feudalistic bureaucratic system which later developed into a colonial bureaucracy. The history of the bureaucracy of Jember Regency is also inseparable from the development of the colonial bureaucratic system. Problems that need to be examined why in Jember during the Dutch colonial period did bureaucratic dualism occur? This research uses historical research methods. The results of this study indicate that during the Dutch Colonial Period of 1883, Jember became a centralized district area separate from Afdeeling Bondowoso. Changing the status of Jember from distric to afdeeling (centralistic district) affected the Jember bureaucratic structure. Afdeeling Djember is led by an Assistant Residentie. However, afdeeling status does not directly make Jember a centralistic district, but there is another independent government called Kepatihan Zelfstandig. Kepatihan Zelfstandig was led by a Patih who came from an indigenous aristocracy. Based on this, it can be concluded that at that time in Jember there was dualism of government in a city. Between the Assistant-Residentie government and Kepatihan Zelfstandig in Afdeeling Jember have an equal position. The duties and authority of the Assistent-Residentie and the zelfstandig governor were somewhat ambiguous. In practice, Patih Zelfstandig and his subordinates tend to work in the field, while the Assistent-Residentie and Dutch officials tend to be advisors and supervisors in governance.
Vegetation characteristics in The Soil Geomorphology Perspective
Authors: Tirta Pratiwi I N , Kurnianto F A , Nurdin E A , Puji R P N
Published: June 2020

This research lies in the hamlet of the village wells are Klompangan, Ajung, Jember. Research carried out aims to analyze the coordinates of the location, the degree of slope (elevation), soil pH, soil texture, soil moisture, the availability of organic materials, and the color of soil on land relate with tobacco and soil geomorphology aspect. Measurement and research carried out on 3 May 2019 by using descriptive method. Location of site selection has taken 500 meter minimum distance of each point by taking a 5 point location. With research and measurement of physical and chemical aspects of the soil in tobacco fields. From the research and measurement in mind that the average pH in the region ranges from 5.9, with the texture of sandy loam rara average, at an average altitude of 84mdpl, average humidity 9.2. Moreover, this study shows that there is a relationship between tertiary volcanic landforms and tobacco growth as an example of vegetation type.
Study of transportation density towards population economy in the Gajah Mada Street, Kaliwates Sub District, Jember District
Authors: Hidayah W , Nurdin E A , Kurnianto F A
Published: June 2020

This study aims to determine whether there is a relationship between transportation density and the economy of the population on Jalan Gajah Mada, Kaliwates District, Jember Regency. The focus of this study is the density of transportation found on Jalan Gajah Mada and its impact on traders and pedicab drivers on the economic aspect. The research method used in this research is descriptive quantitative. Primary data were obtained from pedicab traders and pedicab drivers. Data collection techniques using observation and interview techniques. Data analysis techniques using descriptive analysis. The results showed that the density of transportation is dominated by motorcycle vehicles, where most of these motorbikes are from online transportation riders. Also, the highway is dominated by private cars and public transport such as lin. The population’s economy will increase due to congested transportation. This is due to the ease of access to shops close to the highway, so it becomes an attractive factor for buyers to buy souvenirs. The location of the shops that are easily accessible from the road affects economic improvement along the highway area. There is no relationship between transportation density and lack of buyers/passengers. Because over time, the population will increase, and competition will be increasingly fierce, and traditional vehicles will be replaced by modern vehicles that use technology in their applications. The more cars, the more people take the opportunity to trade. Therefore, the economy remains stable, with more competition in the business world.
On strengthening the local politics to the realization of rural quality education sustainable development goals
Authors: Rasaili W , Dafik  , Hidayat R , Prayitno H
Published: June 2020

The Sustanaible development goals (SDGS) has been popular since 2015. SDG has abig agenda to elevate human dignity. SDGS has 17 strategic agendas where one of them isquality education. The quality education agenda must be comprehensive and fair to be realizedfor all people. Thus, this requires the central and regional government interference and the roleof local politics to make it happen. This study aims to analyze the impact of local politics on therealization of SDGs in term of quality of education. The study uses descriptive qualitativemethods. The research findings show that the fulfillment of SDGs in the field of qualityeducation in several villages in Sumenep district is still low. The role of government and localpolitics is not significant enough to encourage the realization of high SDGs in the field of qualityeducation. The realization of SDGs in the field of quality education so far has not touchedsubstantive aspects such as the quality of learning for students, the relevance of educationaloutput, un-effective learning environment as well as the quality and quantity of educationalfacilities and infrastructure. Thus, the SDGs need to be revitalized in the field of qualityeducation through strengthening local politics.
Unaffected fasting blood glucose levels by micronutrients in diabetes mellitus type 2 patients in Jember regency
Authors: Marchianti A C N , Rachmawati D A , Pralampita P W , Sakinah E N , Aziz A M , Hairrudin
Published: June 2020

Background: Macronutrients have been studied with regard to their relationship with blood glucose, but only a few have examined blood glucose relationship with micronutrients. Consumption of both macro and micronutrients that are right on target can help improve metabolic control, optimize treatment, and reduce the risk of further complications of Diabetes Mellitus (DM). Objectives: To determine whether or not there is a relationship between micronutrient intake and fasting blood glucose (FBG)levels of DM type 2 patients in Jember. Methods: This was a cross-sectional study with 80 samples of type 2 DM patients in Jember by using the consecutive proportionate sampling technique from three hospitals. Measurement of micronutrient intake using the “24-hour food recall” questionnaire, conducted three times, while FBG data were obtained secondary from the patient’s medical record. Results:Statistical analysis using the Spearman rho correlation test showed that there was no significant relationship between each intake of micronutrients with FBG levels (p>0.05). Conclusion: The amount of micronutrient intake did not have a significant relationship with the level of FBG in this study. Nevertheless, DM patients still need to pay attention to both macro and micronutrient intake to maintain regulated blood glucose levels.
Risk hierarchy analysis of international railway container transportation
Authors: Gao Ling , Chen Kaixin
Published: June 2020

The implementation of the "the Belt and Road" strategy has deepened the ex change of goods between countries and regions along the “Silk road economic belt”. Until April 2019, China launched more than 15,000 trains of the international container trains. Because there are many kinds of transportation goods, many transportation segment, the whole transport process has to face multiple risk threats. According to the "5M" theory, this paper constructs a transportation risk indicator system with 5 first-level indicators and 28 second-level indicators, applicate AHP to calculate the weights of all indicators, selected 17 indicators. Using ISM, the risk hierarchy structure is determined and a three-level interpretative structure model is established. The first level is the surface factor, which including three indicators, if the surface risk factors are identified, it means that the entire transportation system is facing a serious risk crisis. The second level is the middle level factor, which including 11 indicators. The middle factors are risk factors for releasing the crisis signal which is usually closely related to the macro policy changes and the organizational capabilities and resilience of each link. The third level is the deep-seated factor, including three indicators, which requires risk managers to take counter-measures of risk warning and prevention.
Research on the governance of parent-subsidiary company under the mixed ownership mode
Authors: Zhu Ye , Jiang Wei , Shi Xinyu , Dai Yuntian
Published: June 2020

As the core content of state-owned enterprises reform, Chinese state-owned enterprises have some problems in corporate governance for a long time, which restricts the process of the reform and development in these enterprises. As a breakthrough in deepening the reform of state-owned enterprises, the mixed-ownership reform has opened up a new theoretical research direction and reform practice space for state-owned enterprises to carry out and improve corporate governance. Under the framework of corporate governance and contemporary property rights theory and based on the analysis of the characteristics and existing problems of corporate governance in Chinese state-owned enterprise groups, this paper summarizes the framework and specific measures that can be taken by state-owned enterprises to improve corporate governance under mixed-ownership reform.
An accurate and fast detection method for railway lightning protection component
Authors: Wu Suining , Li Bin , Wang Zhixin , Chen Xiaoguang , Shi Long , Tan Shulin
Published: June 2020

Lightning protection component is used to display the working condition of railway cable networks. Lightning strike damage cable networks, hence, the research of detection method for railway lightning protection is of great importance. So far, there are limited methods to solve this problem. Existing methods are based on electrical and magnetic signals. However, these method can not meet the acquirement of speed and accuracy. In this paper, we proposed a accurate and fast detection method for railway lightning protection component. The proposed method is based on deep neural network named W-YOLO. To solve the imbalanced samples problem of fault components and common components, we devised a novel classification loss function according to the proportion components. Since the raw class and location coordinate of components are lack of meaning, a sorting method of elements based on the angel and distance threshold is proposed. From the experiments, the proposed detection method is able to detect railway lightning protection component accurately in real time.
Urban square as a strip development revitalization element (case study: Dr Mansur street corridor, Medan City)
Authors: Lindarto D , Harisdani DD
Published: June 2020

Indication of urban sprawl at the center of urban growth are characterized by strip development of residential-commercial zoning changes uncontrollably. One of the strip developments that took place in the city of Medan was Dr. Mansur street corridor. Changes in residential allocation functions become uncontrolled commercial places because of the dynamics of community activities and become a development degradation that requires efforts to revitalize the area. By uncovering the potential of urban square forming with direct observation in the field of social activities that take place in shared public spaces in this corridor, research raises the local wisdom of community behavior and potential places of interest that are bottom up development. The finding this research is the identification mapping of revitalization elements in the form of urban square (place and activity) for the complimentary of generic and organic revitalization models, which can later become a guide for the community and government in addressing changes from and by the community so that the negative strip development indication can be controlled.
Soil Improvement for clay with limestone and glass slag based on CBR value
Authors: Puji Hastuty Ika , Roesyanto  , Ridwan Anas M , Nasution Adi
Published: June 2020

Trash is one of the biggest problems for the cities in Indonesia, especially the city that has a relatively big number of citizens. One of them is glass, where glass is a material that is not decomposed by soil biologically. The negative impact from glass waste is it harms the environment. The objective of this research is to determine whether glass can be useful as the material for clay stabilization and to determine the bearing capacity using limestone and glass slag and also to determine bearing capacity using only the limestone. The mixture used in this research is 2% limestone and 4% limestone with additional glass slag of 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% and 10%. Based on the research, it is determined that the biggest CBR value at a mixture of 2% limestone and 10% glass slag is 8.86%, and at variation of mixture of 4% limestone and 10% glass slag with CBR of 10.5%.
The use of bottom ash and limestone as soil stabilization material based on unconfined compression test
Authors: Puji Hastuty Ika , Roesyanto  , Stephanes Daniel
Published: June 2020

Unconfined Compression Test (UCT) is a test for cohesive soil strength, and this could be tested for both existing soil and remolded. UCT is aimed to determining the soil strength rapidly and quickly and economycally. Soil improvement is done by mixing the soil with other material to have a better soil characteristics. This research uses chemical stabilizers, i.e, limestone and bottom ash. This research is meant to determine the value of maximum compression strength using UCT with additional stabilizing materials and to determine the optimum water content of additional limestone and bottom ash. Based on the result, it is known that the existing soil has water content 24.35%, unit weight 2.673, liquid limit (LL) 38.15%, and plasticity index (PI) 21.54%. Based on AASHTO, that soil is categorized as Clay Low (CL), where as based on USCS it is categorized as A-6. Value of UCT of existing soil is 1.320 kg/cm2. After the soil is mixed with variation of limestone and bottom ash determined, it is obtained that the most optimum UCT value is at variation of 4% limestone + 8% bottom ash with value 2.585 kg/cm2, optimum water content (Wopt) 21.80 % and dry weight maximum (γd max) 1.427 gr/cm3.
Evaluation of loading rate to the stress-strain response of reinforcing steel bar
Authors: Idhar R A , Sjah J , Handika N , Tjahjono E
Published: June 2020

To obtain the material properties of reinforcing steel bar (rebar), a tensile test must be performed in the laboratory. Some standards, such as SNI and ASTM, standardize the condition of the sample and the loading rate of the tensile test. ASTM E8M regulates the loading application (1.15-11.5 MPa/s) of steel rebar test under tension to determine yield properties and SNI 07-2529-1991 governs 10 MPa/s as the maximum loading rate. These circumstances affect the duration of tensile test in real condition, which may lead to one hour of tensile test. In this article, the effect of loading rate of pre-conditioned steel bars (by reducing the section, grinding, and/or lathe according to SNI 07-2529-1991) is investigated using deformed bars (BJTS 40, certified by industries). Random samples of steel reinforcement bar are tested under three different loading rate applications. The result of the material properties of rebar, such as stress-strain curve, yield strength, and ultimate strength, are discussed and analyzed in this study. Different speed tests resulting in different stress rates before yield. However, the stress-strain responses of specimens in the range of linear elastic material are similar. Moreover, at the post-yield/plastic region, the loading rate significantly affected the ductility of the material.
Review CBR (California Bearing Ratio) value on peat soil Paya Pinang plantation of sub-district Laut Tador Batubara Regency
Authors: Roesyanto  , Taminta B
Published: June 2020

Peat soil is a type of soil that highly consists of organic substance, which is formed from the remains of fully decomposed plants. Peat soil has high water content, high void ratio, and low bearing capacity so that the peat soil is categorized as bad soil for construction. The purposes of this research were to identify the index properties of peat soil, to determine the classification of peat soil, and to determine the subgrade strength of the peat soil from the CBR test. Peat soil Paya Pinang Plantation had high water content (w) of 581.721%, specific gravity (Gs
) of 1.533, void ratio (e) of 2.103, moist unit weight (γd) of 0.549 gr/cm3, dry unit weight (γb) of 0.088 gr/cm3. Based on ASTM D4427-92 the peat soil sample had 22.424 % ash content and organic content of 77.576 %, as a result, the peat soil was classified as High Ash Peat. The peat soil had a pH of 6 and was classified Slightly Acidic because of the pH value between 5.5 and 7. The CBR soaked and unsoaked for three days were 1.222% and 1.505% respectively. Based on the Standard Proctor test, the maximum dry density was 0.474 gr/cm³ and the optimum water content was 37.236%.
Operational performance analysis of trans mebidang bus (case study: Binjai terminal - Medan)
Authors: Surbakti M S , Bakara M R
Published: June 2020

The purpose of this study is to analyze the performance of parameters and the satisfaction of passengers of Trans Mebidang bus which serves from the Binjai terminal to Medan City Market Center. Based on SK.687/AJ.206/DRJD/2002, the performance of parameters is comprised of: the travel time, the headway, the circulation time, the load factor, and the comfort of the passenger area on the bus. The method that is used to measure the satisfaction of the passengers is Importance Performance Analysis. Results of the analysis found that the parameters of headway, circulation time, and load factor should be corrected because do not meet the standard, whereas the results of the analysis of the satisfaction of passengers indicated that the parameters that need to get improvement are the physical condition of the bus stop also the comfort and the safety of the bus stop.
Heritage conservation roadmap for the historic city of Medan, Indonesia
Authors: Fitri Isnen , Ratna  , Marisa Amy , Sitorus Rudolf
Published: June 2020

Due to the absence of guidelines or plans, conservation and protection activities were done accidentally as a reaction to the situation. Therefore, this study aims to explore and establish a roadmap for the conservation and protection of cultural heritage in Medan through a compilation of secondary data on aspects of documentation, heritage legislation and community involvement and then followed by group discussions meeting with several Medan cultural heritage experts and staffs of the Cultural Office. Through data compilation and analysis, it was found that there were three missions from 6 missions of the city that had been determined by the current Medan Municipal Government. It was the guideline in making a scenario for the development of a roadmap for the heritage conservation in Medan which was dominated by the immovable heritage, especially buildings. Therefore this roadmap of heritage conservation of is intended to be a guideline in the effort to safeguard cultural heritage in Medan, particularly for the tangible heritage, however, in its implementation, it is inseparable from the intangible heritage. This roadmap covers five aspects, namely strengthening the capacity building of Institution and HR Management Systems, developing the cultural facilities, enhancing regulations and policies on culture heritage, provision of heritage conservation plans and guidelines, and public education improvement, socialization and promotion.
Creation the space for communal learning place in the area between buildings
Authors: Siagian Morida , Sitorus Rudolf
Published: June 2020

One of the objectives of outdoor space planning and campus building is to accommodate students need for learning activities and social interactions. The Faculty of Mathematics and Natural Sciences one of the 15 faculties in the University of Sumatera Utara has a uniqueness in the use of gathering space on campus. By using mixed research methods, it found many students use almost their time in outdoor communal space. The students transform the outdoor space between building from relax space to be learning activities space. Because of limited outdoor spaces and many works have to be finished the students adapt the outdoor space for their needs with their own ways. Their activities and interaction create space that fit to them and characterize the area.
Performance spaces in Lumban Silintong area
Authors: Siagian M , Sitorus R
Published: June 2020

Lumban Silintong, Balige which is located in the bank of Lake Toba has changed very rapidly after the Central Government of Indonesia set Lake Toba as one of 10 major tourism destination in the country and established Badan Otorita Danau Toba (BODT) was in 2016. The beach which was a public space where all the community from the area and visitors from outside get access to the lake for free, and enchant beautiful lake view without limitation. Today it becomes a commercial space. The owners of money built currently 18 cafes along this beach. The area become space for private activities which characterized by modernity which are forming space gaining maximum profit. The 24-hour live cafes do not stop having eliminated the daily activities of local people and become commercial activities for the sake of café owners. District governments that are unable to enforce regulations on development along the beach cause the appearance the beach is not controlled. With mixed research methods, this study was done with observations, data collecting, photo taking that local space along the beach of Lumban Silintong which was used to be experienced and used by the public for free, now become commodities with modern concepts.
Application of the delphi method to new renewable energy assessments in power plants in North Sumatra province
Authors: Ishak Aulia , Habibi Rahman Barus Wan
Published: June 2020

Abstrak

New renewable energy assessment on power plants is one of the solutions that can be developed in order to increase the utilization of new renewable energy as a source of electrical energy in electricity generation and also to realize national energy security. Before conducting a new renewable energy assessment on a power plant, the steps that must be taken are determining the criteria and subcriteria. Determination of criteria and criteria for new renewable energy assessment at the power plant is carried out using the Delphi method. The Delphi method is a systematic and interactive method, which depends on a panel of independent experts. Delphi is based on the principle that estimates from expert structured groups are more accurate than those from unstructured or individual groups. In this study the Delphi questionnaire was distributed. Where the contents of the questionnaire are to determine the criteria and subcriteria in new renewable energy assessment at the power plant. The questionnaire was distributed to 3 respondents who were considered experts in their fields, namely new renewable energy at the power plant. The results of the distribution of the questionnaire are the criteria for evaluating new renewable energy used in the study consisting of 4 criteria namely technological aspects, economic aspects, environmental aspects, and social and political aspects developed into 16 subcriteria namely energy efficiency, security risk, energy production capacity, investment costs, operating and maintenance costs, financial risk, payback period, methane gas emissions. CO2 emissions, CO emissions, land use, ecosystem impacts, labor, political support / policy, human health impacts, social benefits.
Comparison of mass balance and oil quality in plant refinery I and IV
Authors: Irvan  , Trisakti B , Sidabutar R , Situmeang CW , Siregar FMR
Published: June 2020

Refinery process is the process of refining crude palm oil (CPO) to remove Free Fatty Acid (FFA), odors, and reducing color, so that it meets the quality requirements. Fractionation is a process of separating triglycerides based on palm oil based on its melting point which aims to separate the solid fraction (stearin) and liquid fraction (olein). The fractionated oil comes from the refining process. The purpose of the mass balance comparison is to determine the quality and quantity of oil produced from the refinery and fractionation processes. The production capacity at the refinery plant I and IV were 1,700 and 1,800 respectively. The amount of refined bleached and deodorized palm oil (RBDPO) produced based on the mass balance calculation at plant I and IV were 73,597 and 77,377 kg/h respectively with criteria were free of impurities and FFA.
Potential of durian, avocado and jackfruit seed as raw material of bioethanol: a review
Authors: Ginting M H S , Irvan  , Misran E , Maulina S
Published: June 2020

The using of fuel oil is very consumptive so that it increases every year, as decreasing the availability of non-renewable natural resources, therefore the use of alternative energy (renewable energy). Renewable energy is a natural source of energy produced that will not be exhausted and can be sustainable if managed properly, among another biofuel. The purpose of this article to review the potential of tropical fruit seeds: durian, avocado, and jackfruit as raw materials for bioethanol production include stages: starch extraction, hydrolysis process using acid as catalyst, and fermentation. From available research data, the potential of tropical fruit seeds needs to be developed as raw material for making bioethanol.
The utilization of chicken bones as heterogeneous catalyst (CaO) in the production of fatty acid ethyl ester from crude palm oil by using ethanol as solvent
Authors: Suriani Sinaga Mersi , Pardede Pontius , Ermawati
Published: June 2020

Fatty acid ethyl ester is one of the most potential alternative energy because it is renewable and environmentally friendly. Fatty acid ethyl ester is usually made by transesterification using heterogeneous alkali catalyst. Chicken bones ash (CaO) is heterogeneous alkali catalyst which is non-corrosive and environmentally friendly. It can also be separated easily from the product by filtration and less removal problem than homogeneous catalyst. This catalyst was made by grinding and calcination the chicken bones. Others variables used in this research were the dosage of the catalyst, molar ratio of ethanol to crude palm oil and reaction temperature. The best yield of the fatty acid ethyl ester was 90.052% at the condition of 17:1 ethanol to crude palm oil molar ratio, 70 °C reaction temperature, 7% of catalyst (w/w), 7 hours of reaction time and 500 rpm stirring speed.
Biogasoline production via catalytic cracking process using zeolite and zeolite catalyst modified with metals: a review
Authors: Haryani Nina , Harahap H. , Taslim  , Irvan
Published: June 2020

Biogasoline as an alternative fuel from vegetable oil is increasingly being studied by universities, research institutions, governments and others. The fact that the low yield of biogasoline is produced, the length of reaction time, how much energy is needed during the reaction, the high reaction temperature and expensive operating costs is a challenge in the scientific world to improve and develop further research. An appropriate process technology is needed in order to produce biogasoline fuel which is equivalent to the results of petroleum fractionation. Catalytic cracking process is one of the processes that are widely studied to produce biogasoline. Along with the development of biogasoline production, the use of catalysts in the cracking process has become increasingly diverse. It is in this paper that various biogasoline production with cracking processes using catalysts focused on zeolite and zeolite catalysts modified with metals will be reviewed, including an overview of cracking raw materials, types and characteristics of zeolite catalysts, operating conditions, and how the performance of each catalyst. Zeolite catalyst which is a heterogeneous catalyst is considered to have a good ability in selectivity, activity, and ease of modification so it is very influential on cracking results. Some zeolite catalysts modified with metals such as Zn/Zeolite, Au/HZSM-5, Ni-Mo/zeolite, Pd/HZSM-5, Pt/HZSM-5 are reported to be able to provide good performance to increase biogasoline yield and certainly become a useful new catalyst in the scientific world.
Hydrolysis of oil palm empty fruit bunch using rotating microwave reactor
Authors: Sarah M , Fajrina A
Published: June 2020

This study using microwave application as a heat source to facilitate the conversion of oil palm empty fruit bunch (OPEFB) into glucose by hydrolysis process. The hydrolysis process using sulfuric acid (H2SO4) as a catalyst at a various concentration (0 and 0.25 N) and level of microwave power (100 and 300 W). The glucose concentration is measured by the DNS method using UV-VIS spectrophotometric. The best glucose concentration is 23.038 ppm at 60 minutes, 0.25 N H2SO4, and the level of microwave power is 300 W.
Improving the quality of liquid smoke from oil palm fronds through adsorption and distillation processes
Authors: Maulina S , Sinaga F A
Published: June 2020

This research aims to obtain information regarding purification of liquid smoke from the pyrolysis of oil palm fronds to be used as a preservative product following food quality standards. This research started by performing the pyrolysis of oil palm fronds at 250 °C for 2 hours to produce liquid smoke. Subsequently, the liquid smoke from the pyrolysis was purified in two stages, namely adsorption and distillation. The adsorption which was carried out at 60 °C for 1 hour by using an activated zeolite, resulted in liquid smoke which still contains a tar contaminant compound. The analysis of the liquid smoke after adsorption showed a decrease in the composition of carbonyl and phenol compounds but in trace amounts. Meanwhile, the distillation was carried out at 125, 150, 175, and 200 °C and at 15,30,45, and 60 minutes, which resulted in a liquid smoke that is free of tar. The research revealed that the recommended temperature and time of distillation was at 150 °C and 45 minutes with tar residue of 2.4 %, total acid of 5.15 % and a pH of 2.3. Furthermore, GC-MS analysis indicated that the resulting liquid smoke was dominated by acetic acid compounds of 45.46 % (w/w).
Waste power plant: waste to energy study in Medan city area
Authors: Sihite A , Kasim ST , Fahmi F
Published: June 2020

This study discusses the waste to energy processing technology in the area city of Medan Sunggal. Waste management is considered to be the optimal solution to reduce the volume of waste and its growth in Medan. Through the calculation and assessment of the data obtained, we can find out the volume of waste in Medan Sunggal is more than 132 m3 per day with a weight of 28,512 tons per day. The proposed waste to energy utilization method is the thermochemical method. Garbage is processed first in specific way as to reduce the water content in order to obtain a higher calorific value. The garbage has the potential to generate electricity at 1.8 MW theoretically, but the effect of 80% boiler efficiency, 25% steam turbine and 90% generator will affect the actual output to be around 451.46 kW. With the selling price of electricity in accordance with Ministry of Energy and Mineral Resources regulation number 44 of 2015, the implementation of Waste Power Plants (WPP) meets the feasibility of economic analysis. Based on the calculation of the economic analysis, the net present value of WPP obtained at Rp 970,964,221.25 and payback period does not exceed the economic life of the plant and benefit cost ratio is greater than Zero. These criteria can be used as a reference for evaluating the feasibility of developing Waste Power Plants in the area.
Degradation of phospate in laundry waste with biosand filter method
Authors: Sinaga M S , Astuti S W , Gultom Elisabeth
Published: June 2020

The most active ingredients in laundry waste such as clothes softener and detergent are ammonium chloride, linear alkyl sulfonate (LAS), sodium dodecyl benzene sulfonate, sodium carbonate, sodium sulfate, alkylbenzene sulfonate. These materials are not biodegradable This study aims to reduce the phosphate and surfactant content with the biosand filter method which uses activated carbon as adsorbents with the laundry to nutritional waste mixtures ratio of 100%: 0, 75%: 25%, and 50%: 50% (%volume) with anaerobic process. The parameters analyzed were Chemical Oxygen Demand (COD), Total Suspended Solid (TSS), Volatile Suspended Solid (VSS), pH everyday and Phosphate and Surfactant before and after anaerobic processes. The pH for this study is set in the range of 6.9-7.5. The largest volume was at 50%: 50% (v/v) mixture of laundry waste and nutrients obtained 76.61% TSS, 63.55% VSS, 53.67% COD, 74.32 % phosphate and 53.54% surfactant. Reduction of phosphate and surfactant values is caused by the presence of a dirty layer (biofilm) in the tank so as to produce phosphate and surfactants that have met quality standards based on the Government Regulation of the Republic of Indonesia No. 82 of 2001.