Rika Ampuh Hadiguna
@industri.ft.unand.ac.id
Industrial Engineering
RESEARCH INTERESTS
Logistics and Supply Chain Innovation
Scopus Publications
Scopus Publications
Julia Marisa, Rahmat Syahni, Rika Ampuh Hadiguna, and Nofialdi Nofialdi
Insight Society
This research is built on the concept of sustainable value chains, where a framework for sustainable value chain analysis emerges that covers not only economic aspects but also includes environmental and social impacts in a collaborative model of value chain management. It explores the dimensions on which value chain sustainability should focus. It illustrates how and why it is necessary to take a broader perspective in ensuring the internal economic sustainability of the chain in line with its external socio-environmental consequences. This research aims to analyze the sustainability of the tilapia processing value chain. This research uses the Multi-Dimensional Scaling analysis method supported by Rap-fish software. The Rapfish methodology is a flexible technique that rapidly assesses fisheries status by integrating ecological and human factors according to identified norms. The results of this research show that the sustainability of the tilapia processing value chain is considered entirely sustainable from economic, social, and environmental aspects, with a sufficient sustainability index of 74.40%. The sustainability of the value chain relies on four key actors: tilapia cultivators, collectors, processors, and distributors. The sustainable tilapia processing value chain strategy in North Sumatra can limit floating net cages by considering the environmental carrying capacity and supported by suitable policies and active stakeholder participation in community-based legal institutions. This research found this is a strong sustainability concept if implemented with better governance and policy management in the tilapia industry value chain.
D. Rahmayanti, R. A. Hadiguna, S. Santosa, N. Nazir, and B. Yuliandra
AIP Publishing
Armijal, W A Marlina, and R A Hadiguna
IOP Publishing
Abstract The layer farming has been a vital element in our economy as the sector does not only provide large number of employments for smallholder farmers but also supply food provision that support our national’s food security and dignity. However, this sector is prone to risk as high uncertainty lies on the production of eggs. Market price volatility, food scarcity, extreme weather, soaring price of raw materials are some risks that can disrupt the sustainability of the supply chain of egg productions. It is essentially important for smallholder farmers to incorporate risk management approach in their egg productions. This research employs a supply chain operational reference (SCOR) and house of risk (HOR) methodology to identify, assess and evaluate the inherent risk that lies on egg productions managed by smallholder farmers. HOR phase I were able to identify 25 risk events and 45 risk agents, while HOR phase II were able to identify 4 risk agents which represented 20% of ARP score. Finally, this research was able to propose 4 preventive actions (PA) to mitigate the risk of egg productions by smallholder farms.
J Marisa, R Syahni, RA Hadiguna, and Nofialdi Nofialdi
IOP Publishing
Abstract The purpose of this research/study is to identify the actors involved in the value chain, analyze the added value received by each actor, and analyze the value chain of business actors who get the most benefits and related parties in the Toba Samosir Regency. The data analysis used in this research is in the form of qualitative and quantitative data analysis. Qualitative analysis is conducted to describe and analyze the actors involved in the value chain of the tilapia business. Quantitative research is carried out to calculate the costs and benefits used to determine the added value of the business. The results of this study are the flow pattern of the tilapia business value chain, starting from fish cultivators to consumers. The actors involved in the value chain consist of fish farmers, wholesalers, processors of tilapia, and distributors. The added value obtained by each tilapia value chain actor is 18.08% for tilapia cultivators, 5.31% for collectors, 60.76% for tilapia fillet processors, and 15.85% for tilapia fillet processors distributors. The business actor getting the biggest profit in the value chain is the fish processor, Rp. 102,048,667,500 per kg.
Edi Susanto, Norfaridatul Akmaliah Othman, Suwarni Tri Rahayu, Nur Rachman Dzakiyullah, Etty Handayani, Sri Gunawan, and Rika Ampuh Hadiguna
Growing Science
Fresh produce which are part of agricultural products that can survive during the pandemic in Indonesia, there is even an increase in supply, this contribution is important for the availability of these products in maintaining consumption needs in maintaining public health levels in the midst of an unfavourable situation for all parties, including sustainability of business in this chain network. However, the development of this commodity still has many obstacles, especially in the ability to provide high-quality products, resource capabilities and manage existing information, especially the farmers who are involved in cooperation in this supply chain system, so that it can impact their performance. This study explores the mediating effect of collaborative performance systems (CPS) in lateral collaboration structures such as; information sharing (ISH), resource sharing (RSH), contract farming (CTF) and join mode transportation (JTM) in individual companies (CIP) and supply chain performance (SPO) in the fresh produce supply chain (FPSC). The sample in this study was taken based on purposive sampling from the participation of respondents in the FPSC network consisting of farmers producing fresh vegetables and fruits who are members of the Association of the Farmers Groups (Gapoktan), distributors, owners of transportation modes and supermarkets. Respondents consisted of 72 people who had filled out complete questionnaires from their four supply chain channel partners. Data collection methods were analyzed using a structural equation approach. The results of the study that the mediation of CPS on the performance of CIP and SPO in the FPSC was confirmed.
Adila Kasni Astiena, Rika Ampuh Hadiguna, Acim Heri Iswanto, and - Hardisman
Insight Society
Dzakiyah Widyaningrum, Said Salim Dahda, and Rika Ampuh Hadiguna
Inderscience Publishers
Dina Rahmayanti, Rika Ampuh Hadiguna, N.A. Santosa, and Novizar Nazir
Inderscience Publishers
Ery Sugito, Rika Ampuh Hadiguna, and Rizki Prakasa Hasibuan
International Information and Engineering Technology Association
Material handling activities within a company have a very important role, especially in warehousing activities ranging from the process of receiving goods, storing goods to product distribution. To reduce the waste that occurs in material handling, a lean manufacturing approach is used with the Value Stream Mapping (VSM) method for mapping the flow of material handling activities and the flow of information on material handling activities. Waste that occurs in the material handling work process in the printing sheets area includes waiting, excess processing, and transportation. With Root Cause Analysis and Risk Matrix, it is known that the most influential root causes of waste are inadequate human resources, material handling tools in preparing goods and process break quantity from standard pallets, and distribution of areas far from the printing sheets warehouse area. Recommendations for improvement proposals offered are, providing additional material handlers, material handling tools for activities within one department by considering distance and time, reducing break quantity requests and temporary locations for receiving printing sheets in the production area, as well as collaborating with suppliers to arrange the arrival schedule of printing sheets material by communicating and updating regularly with the forwarder if the frequency of delays is too frequent. So that if it is repaired and applied it will improve the performance of the material handling.
D Meilani, R A Hadiguna, and C A Pradipta
IOP Publishing
Abstract The geographic information system that was designed was a geographic information system as a tool for the distribution process of earthquake and tsunami disasters in Padang City. This design is based on the problems that occur on the process of distributing the disaster relief such as obstruction of the distribution process of disaster relief due to abnormal road conditions, lack of information about the data of disaster relief needs at the evacuation posts so that the disaster relief provided does not match with the disaster relief needed on the evacuation post. Based on these problems, the system designed aims to provide information on optimal disaster relief distribution routes, as well as providing information about the disaster relief needs data so that the process of exchanging information about disaster relief needs data can be done more effectively. The determination of the disaster relief distribution network is using the Dijkstra Algorithm. That the shortest distribution path is obtained using the Dijkstra Algorithm with assuming that the path is traversed only to the main lane and the bridge that can be traversed is only the bridge in the Tsunami green zone. The system design is done using the waterfall method. The results obtained are that the system has four main functions. The first is to provide the optimal distribution routes, providing information about the shelter location data, providing information about disaster relief needs data, and providing information about disaster relief needs stock data. The distribution channel in the system consists of 5 safe routes to pass with the starting point is the Management Operation Center of Regional Disaster Management Authority. This research was conducted to simplify the process of distributing disaster relief because at this time officers who carry out the evacuation process are still doing data recap manually.
Hermiza Mardesci, Santosa, Novizar Nazir, and Rika Ampuh Hadiguna
IOP Publishing
Abstract Agroindustry is one of alternatives to elevate the income, both community and country. Therefore, agrarian countries strives to develop the prospective agroindustry by utilizing their own natural resources. Indonesia is one of the world’s top coconut producers and one of its national largest producers are located in Indragiri Hilir, Riau Province. Not only coconut flesh processing, coconut water-based industry is widely found in Indragiri Hilir. The coconut water can be processed into high value-added products, such as nata de coco, candy, soy sauce and syrup. To evaluate its value-added of processed coconut water-based products, analysis of value-added is required to be performed. Moreover, to support the development of coconut water-based agro industry, the presence of supporting organization is also a critical point that should be taken into account. This study was aimed to determine the value-added of coconut water-based products and the contributing institution related to the development of coconut water-based agro industry. Determination of contributing organization was conducted descriptively using the AHP method through questionnaire distribution, interview and literature study. Seven respondents, consisting of academician, extension officer and staff from the local plantation office, were used in this study. Analysis of value-added was performed using Hayami method. The results of this study revealed that the coconut water-based product contributing the highest value-added was candy with IDR 69,980.8/kg. Other products showed relatively low value-added, such as syrup (IDR 23,674.2/kg), soy sauce (IDR 5,220.2/kg) and nata de coco (IDR 960.52/kg), respectively. Type of organization contributing the highest expectation weight (47.8%) resulted from the village-owned enterprise (BumDes).
Hermiza Mardesci, - Santosa, Novizar Nazir, and Rika Ampuh Hadiguna
Insight Society
Coconut is a potential commodity to be developed. The development of coconut agro-industry can increase product added value. Value-added analysis needs to be carried out to find out how much the added value of processed coconut product is. The calculation of basic costs also needs to be done to find out how much it costs to produce 1 unit or 1 kg of product. This research is beneficial as decision support through useful information for coconut farmers in increasing their income. Value-added analysis in this study used the Hayami method, while the calculation of the cost of processing involves fixed costs, variable costs, working hours, and production capacity. The study was conducted in Indragiri Hilir Regency, Riau. Product selection is based on previous research, which shows that prospective products developed are coconut oil, coconut sugar, and shell charcoal. Data collection was carried out in three districts, namely Mandah, Reteh, and Enok. The results showed that each product's added value was IDR 1,037.79 per kg in coconut sugar processing, IDR 760 per kg in coconut oil processing, and IDR. 249.98 per kg in shell charcoal processing. The results of the calculation of the cost of processing, the results obtained the production cost of charcoal processing is IDR 472.92 per kg, for coconut oil processing is IDR 14,939.13 per kg, and for processing of coconut sugar, it is IDR 8,535.07 per kg. The three products' production cost is far less than the selling price, so the business is quite profitable.
Elita Amrina, Sri Widya Utami, Insannul Kamil, Rika Ampuh Hadiguna, and Nilda Tri Putri
IOP Publishing
Abstract The closed-loop supply chain has been identified as an efficient and effective strategy for sustainable practices in manufacturing companies. An evaluation is essential to achieve a successful closed-loop supply chain. This study aims to evaluate the closed-loop supply chain performance in the bottled water industry using a fuzzy rule-based system. A case study is conducted to PT X, a bottled water company in West Sumatra. The results show the overall closed-loop supply chain performance of PT X is at a fair level. Nine measures in the forward chain are at a good level. In contrast, one measure (i.e., product characteristics) is classified into a poor level. Based on the results, the company needs to conduct improvements related to product characteristics. In terms of the reverse chain, two measures (i.e., material features and supplier commitment) are at a fair level, while four measures are at a good level. The company has to pay more attention to material features and supplier commitment. Improvements to those measures can increase the reverse chain’s performance, which indirectly increases the overall performance of the closed-loop supply chain.
L Nesti, F Tan, and R A Hadiguna
IOP Publishing
Abstract The agricultural sector in Indonesia, especially Crude Palm Oil (CPO) has contributed the country’s foreign exchange with the value of CPO exports in 2016 amounting to the US $ 17.8 billion, up 8 per cent compared to the previous year of US $ IG.5 billion. This has led Indonesia to become the largest producer and exporter of palm oil until now. Six provinces became the largest production centre of palm oil in Indonesia, but West Sumatera Province has not been included in the big six. West Sumatera Province, which is still dominated by an agriculture sector, and or plantation sub-sector has contributed 6.57%. The purpose of this research is to analyze the competitiveness of CPO export of five provinces located in Sumatra Island in a domestic market and compare it with C PO competitiveness in West Sumatera Province with time-series data from 2000-2016 using RCA (Revealed Comparative Advantage) Index. The results show that on average the RCA value produced by RCA > 1 is only South Sumatera province with RCA < 1 if each year the analysis of each Province shows fluctuating RCA values that lend to show a decline. Except for the value of RCA Provinces West Sumatera showed on the increase. One of the causes of the declining RCA values is that each Province has started to focus on the development of downstream CPO products so that the CPO that was once more exported overseas has gradually started to reduce exports and more to meet domestic demand as raw materials CPO downstream products such as the manufacture of food and non-food products. Meanwhile, CPO in West Sumatera Province is still dominated by foreign exports compared to downstream development.
Kimberly Febrina Kodrat, Sukaria Sinulingga, Humala Napitupulu, and Rika Ampuh Hadiguna
IOP Publishing
Abstract In fact, supply chain management can not only be applied by large enterprises but also by Small and Medium Enterprises. One of them is Small and Medium Enterprise of Passion fruit. Passion fruit (passifloraceae) is one of the strategic commodities because of its usefulness as raw material of passion fruit syrup as an agroindustry product that has rich nutritional value of vitamin C which is beneficial to human health. This research has five elements of supply chainnamely : farmers, suppliers, extract agroindustry, passion fruit syrup agroindustry, and retailers.The objective of this study is to analyze whether there is a significant influence between Supply Chain Management on firm performance. This type of research was a causal research. Data collection used questionnaire. The result of multiple linear regression analysis, it showed that the variable of process integration has the biggest influence to variable of enterprise SCM performance (dependent) with coefficient value equal to (0,289), then variable of satisfaction with value (0,058), variable of trust (0,286), communication variable (0,184), dependency variable (0,021) and having the least was the variable of influence and commitment (0,080). This means that the five independent variables have a positive and significant influence on the dependent variable.
Dina Rahmayanti, Rika Ampuh Hadiguna, Santosa Santosa, and Novizar Nazir
Wiley
Santosa, R A Hadiguna, A Syaputra, and M Makky
IOP Publishing
Abstract Labour productivity influenced by work-in-process, labour skills, machineries and working environment. This study identified factors affecting the labour during sorting and grading of cinnamon. Five factors used as independent variables, namely working motivation (X1), working environment (X2), salary (X3), age (X4) and workload (X5). Factors then correlated with labour performance (Y) as dependent variable. Samples were randomly selected from respondents, of the Rasdi Fo & Co. Personal characterization calculated from employee’s years of service. Results then grouped according to the labour experienced, and statistical analyses were set according to F test, t test, power function, and influence factors. These methods used to analyse the working environment, in correlation to the employee performance, room temperature, humidity, lighting, and noise levels. From the results, X2, X3, X4 and X5 had no significant effect, while Y can be described as a function of 2,06(X10.326)(X20.016)(X30.170)(X40.479)(X5−0.172). Maximum room temperature recorded at 38.4°C, while minimum temperature recorded at 29.3°C, lower than the ideal level. Maximum and minimum humidity (RH) was 91.3 % and 59.2 %, respectively. The RH in working environment exceed normal level. The noise level recorded between 48.8 dBA and 78.4 dBA, which classified as normal without ear protection.
Kimberly Febrina Kodrat, Sukaria Sinulingga, Humala Napitupulu, and Rika Ampuh Hadiguna
IOP Publishing
Abstract In the agro-industry sector, supply chain management activities such as the procurement of raw materials, processing, warehousing, distribution, and transportation networks are of utmost importance. Agricultural commodities are perishable, seasonal, varying, and bulky in nature which cause difficulties in its management compared to non-agricultural products. Supply chain performance is an indicator of the success of a company. Therefore its assessment is needed to control and determine the performance feasibility of the company. This study aims at assessing the performance of the passion fruit syrup agro-industry supply chain in North Sumatra. The performance is assessed using SCOR and AHP models. The results show that the three performance assessment matrices with the highest weight are processing costs (0.165), delivery accuracy (0.146), and perfect goods condition (0.122). The supply chain performance was categorized as average (78.69%).
- Aisman, - Santosa, Rika Ampuh Hadiguna, and Novizar Nazir
Insight Society
In 2020, it is projected that the number of households in the Kepulauan Mentawai Regency will reach 22,534 units in which 9,471 units have received electricity from the State Electricity Company (PLN). By the end of 2020, as many as 1,244 households will be targeted to get electricity from the bamboo biomass power plant that has been built. Thus until the end of 2020, there were still 11,819 household units that would not yet get electricity. The Kepulauan Mentawai Regency Government targets that by the end of 2035 all households will have electricity, by developing electricity using bamboo biomass raw materials. The number of households in the Kepulauan Mentawai Regency until the end of 2035 is projected to be 28,639 units, of which from 2020 to the end of 2035, there will be 17,924 household units including electricity needs. If each household is targeted to get 450 VA power, then the total electricity power still needed is 8,066 KVA or approximately 70,758,160 kWh/year. The bamboo biomass power plant, which will be operated in the Kepulauan Mentawai Regency, currently requires 1.5 kg of dry bamboo to produce 1 kW power with a power factor (ghospi) of 0.8. Thus the need for bamboo for power plants is approximately 132,484.1 tons/year. Therefore, to provide this bamboo supply, approximately 714 ha of bamboo is needed. Keyword —bamboo; biomass; electrification; power plant; bioenergy.
Alim Setiawan Slamet, Rika Ampuh Hadiguna, and Heti Mulyati
Inderscience Publishers
Ridha Luthvina, Rika Ampuh Hadiguna, and Jonrinaldi Jonrinaldi
Universitas Andalas
Crumb rubber industry only depends on one main raw material that is called Bahan Olah Karet (Bokar). Based on the observation of several crumb rubber factories in West Sumatera, the company still uses an unsystematic way of choosing the suppliers of bokar. The weakening of the supplier’s supervision system causes bokar that received by the company, in terms of quality and quantity are not met properly. The way to solve these issues is to develop a fuzzy model for supplier assessment of bokar. The first step is the identification of criteria using FDM. Then developing a mathematical model. This research has been successfully developed a mathematical model where FAHP is used to determine the weight of supplier assessment criteria, combined with signed distance at the defuzzification stage. While FTOPSIS is used to obtain suppliers ranking. Through the survey using FDM, we obtain 6 main criteria and 18 subcriteria which relevant to the conditions of the crumb rubber industry in West Sumatera.
M Farid, R A Hadiguna, and I Kamil
IOP Publishing
Abstract Supplier selection is one of the problems in both profit and non-profit organizations that need to be resolved efficiently. One of non-profit organizations is a college. Colleges aim to produce quality graduates. One factor influencing the quality of graduates is the availability of facilities and infrastructure to support the learning process. To obtain good quality facilities and infrastructure, a procurement process is needed by involving the supplier selection process. One way to get a good supplier is to use a Decision Support System (DSS) to help the supplier selection process efficiently. The design is done by integrating databases, mathematical models and information models that are packaged in a user interface (UI). Database design consists of a database of criteria, assessments, inventory data and supplier work lists. Design a mathematical model combines a Likert scale for determining criteria with the TOPSIS method for supplier ranking and Knowledge Management as additional support for supplier assessment. The results obtained are not only fixated on the supplier sorting process, but also display information on supplier data, job list and management of inventory items as supporting decision making and increase the effectiveness and efficiency of supplier selection processes into real time.
Kimberly Febrina Kodrat, Sukaria Sinulingga, Humala Napitupulu, and Rika Ampuh Hadiguna
IOP Publishing
Abstract Supply chain is important in business activities including for small and medium enterprises. The importance of all parties ranging from suppliers, manufacturers, distributors, retailers, and customers working together in the process of product creation to the distribution of products to end consumers produces the appearance of the concept of supply chain management. This study aims to analyze how the effect of supply chain management on enterprise performance. The supply chain management approach is carried out with four independent variables namely sharing information, trust, long-term relationship, and cooperation. This study aims to analyze the effect of supply chain management on corporate performance. The sampling method uses a random sampling method with a total sample of 75 people consisting of small and medium-sized leather shoes in Medan. The research method uses survey and data processing method using multiple linear regression SPSS program. The results of the research show that information sharing, trust, long term relationship, and cooperation variables have a positive and significant effect on the performance of supply chain management in thecompany.