Indonesia Conference Directory

Corresponding Author
Nursiah La Nafie

Institutions
Hasanuddin University

Abstract
Eucheuma spinosum is one of seaweed species that can be found abundantly in Takalar Regency. The biomass of this seaweed has been used to remove Mn(II) ion from the aqueous solution via the adsorption process using E.spinosum. The adsorption of Mn(II) ion was studied in various contact time, pH and concentration. An Atomic Absorption Spectrophotometer (AAS) was an instrument used to determine the amount of ion before and after adsorption. Langmuir and Freundlich equations were used to study the adsorption isotherms of the ion. The results showed that the optimum time obtained was 20 minutes and the optimum pH was 4. The Freundlich isotherm fitted the adsorption of ion Mn(II) using E. spinosum with the capacity (Qo) of 9.07 mg/g. The functional group involved in biosorption of Mn(II) metal ions was hydroxyl (-OH) groups.

Keywords
Eucheuma spinosum, biosorpyion, Mn(II), Freundlich and Langmuir

Topic
Waste to Energy Potential Resources

Link: https://ifory.id/abstract/UECzAmZkGqY8

Corresponding Author
Dewi Marwati Nuryanti

Institutions
¹ S3 Student of Agriculture Science at Postgraduate of Hasanuddin University, Makassar Indonesian
² S3 Lecturer of Agricultural Sciences at Postgraduate of Hasanuddin University, Makassar Indonesia

Abstract
Abstract. Sago Technopark Palopo is an area designed as a center of activities that combines entertainment, education, and research. Collaboratively managed by 3 elements, namely academics, businessmen and the government to anticipate the decrease in production and extinction of sago plants. This study aims to analyze the implementation and prospects for the development of Sago Technopark Palopo to increase production and prevent the extinction of sago plants in Luwu Land. The study was conducted in January-June 2019 in Palopo City. The research method used is the Lewin-Kemmis model action research method which focuses on improving the process and improving the results of activities, starting from the initial idea, investigating the plan of activities, implementation, evaluation, and follow-up plans. The results showed that the implementation of Sago Technopark Palopo had only reached 46% (only implemented on an area of 4.6 ha of the 10 ha planned). The progress of the sago technopark is very good by carrying out: simplifying regulations on regional procurement; prioritizing the improvement of regional facilities and infrastructure; do institutional strengthening; establish and increase the involvement of farmers businessmen and research institutions.

Keywords
Production, Sago, Technopark, Implementation, Policy

Topic
Social and Economy Framework of Energy

Link: https://ifory.id/abstract/69mCGQwdNAz7

Corresponding Author
Nini Hasriyani Aswad

Institutions
1. UNHAS
2. UHO

Abstract
Shear strength analysis of the reduced beam section (RBS) on the castellated beam with exterior connection aimed to analyze the structural elements to determine the shear force acting due to cyclic loading. The study was developed from the theory of moments due to shear forces based on the American Institute of Steels Prequalified Connection Construction for Special and Intermediate Moment Frames for Seismic Applications (AISC 358-10). This study used an experiment of RBS on a castellated beam with an exterior connection model subjected to cyclic loading. The result shows that the shear strength occurred after the bending failure of the beam.

Keywords
Shear strength,RBS,shear force

Topic
Technology

Link: https://ifory.id/abstract/2Qc8e3hU6mLj

Corresponding Author
Carter Kandou

Institutions
Doctoral Program of Civil Engineering Department of Hasanuddin University

Abstract
The purpose of this study is to determine the value of shear forces for coupling beam using annealed wire fiber. It also discusses the relationship of force-strain in annealed wire fiber of RC coupling beam. The design and construction of the coupling beams remain challenging due to the presence of large reversed-cyclic nonlinear rotation demands combined with large shear forces. Annealed wire fiber used in research with diameter (D) 0.8 mm with fiber length (L) 48 mm (L/D ratio is 60) with fiber composition 0.75% of volume. Two coupling beam test specimens measuring 20 cm x 40 cm with a length of 115 cm with a ratio of Ln / h is 2.875 with the details of 1 beam coupling without fiber (CB-1) and 1 beam coupling with fiber (CBF-1). It can be seen in the variation of normal concrete CB-1 results of an experimental analysis of 113.32 kN and in the fiber concrete CBF-1 can be seen that the experimental shear strength of 163.37 kN then it can be seen the shear strength of the CBF-1 experimental analysis is 44.16% greater than the shear strength experimental CB-1.

Keywords
Shear strength, annealed wire fiber, coupling beam, cyclic loads

Topic
Technology

Link: https://ifory.id/abstract/aPEutNL7cTJR

Corresponding Author
Rita Irmawaty

Institutions
Department of Civil Engineering, Faculty of Engineering, Universitas Hasanuddin

Abstract
Glass Fiber Reinforced Polymer (GFRP) is a composite material that is lightweight, easy to apply, low-cost installation and maintenance, thus becoming material selection for retrofitting reinforced concrete (RC) structure. This study aims to analyze the shear capacity of reinforced concrete beams after initial cracked, which is retrofit with GFRP sheets in the pedestal shear area. Six RC beams with dimensions of 15 cm x 35 cm x 300 cm were tested with a monotonic load, consisting of 2 normal beam (BN), 2 RC beams retrofitting with GFRP strips (BGS) and 2 RC beams strengthened in all the shear zones with GFRP (BGF). The results showed that an increase in ultimate load on the beams retrofit with GFRP, ie 3.13% of BGS and 6.25% in the BGF. Retrofitting with GFRP sheet on RC beam shear area is strongly influenced by the extent of GFRP sheets used (Afv). The change in the area of GFRP from BGS with Afv = 780 mm to BGF with Afv = 1105 mm, is able to increase the beam shear capacity by 10.63%. From the calculation, the beam shear capacity increased by 58% in BGS and 74.5% in BGF beams.

Keywords
GFRP, retrofit, RC beam

Topic
Technology

Link: https://ifory.id/abstract/68dDWuXzxfvH

Corresponding Author
Rafiuddin Syam

Institutions
a) Mechanical Engineering Dept., Hasanuddin University, Makassar, Indonesia
*rafiuddinsyam[at]gmail.com
b) Mechanical Engineering Dept., Universitas Muslim Indonesia, Makassar, Indonesia

Abstract
The purpose of this study is to do the simple maneuvers for robot manipulators as small firefighters. Design and experiments were carried out in the manipulator robot as a firefighter. The results obtained by simple maneuvers for the mini firefighting robot succeed with the optimum trajectory. The direct control method was carried out in this study by using Arduino Mega as an interface system. The conclusion of this study is that the robot can perform maneuvering through the path using the line follower robot method.

Keywords
Small Robot Firefighting, Arduino Uno, Control System, Robot Manipulator

Topic
Technology

Link: https://ifory.id/abstract/x9Dj7PWRGgYB

Corresponding Author
Deska Rahmat Tiar

Institutions
Postgraduate School Hasanuddin University, Makassar
Planning and Development Study Program.

Abstract
Smart sustainable concepts has taken in many formed now days depends on how we look the concepts whether you are a scientist, politician, engineering or even just a former people. Social Economic and Education background may took the important rules in how we look and interprets the concepts make smart sustainable become more comprehensively. Integrating all aspect of socio-economic and environmental as well as synchronizing program and activities both in rural villages and cities that are not sensitive to the needs, resources/potential, priorities for individual village or city is dispensable. Therefore, not only in a big cities, the concepts of smart sustainable village needs to be developed in the rural villages where the development of a village is one of supporting factors for the establishment of smart sustainable cities.

Keywords
Smart Sustainable, Socio-Economic, Environmental

Topic
Smart Grid Technology

Link: https://ifory.id/abstract/GHvMdPYjNw4J

Corresponding Author
Muhammad Yazid

Institutions
Department of Agribusiness, Faculty of Agriculture, Universitas Sriwijaya
Jalan Palembang-Prabumulih KM.32 Indralaya, Ogan Ilir 30662

Abstract
The objectives of this study were to investigate and estimate the economic, social and ecological benefits of agricultural waste processing and to assess farmers- perception on agricultural waste processing. This research was conducted in Kecamatan Tanjung Lago, Banyuasin, Sumatera Selatan. Survey data were collected from farmers selected using disproportionate stratified random sampling. The results showed that the economic benefits of agricultural waste processing were reducing production costs, increasing income of rice and corn farming, and improving the welfare of farmers. The social benefits were raising the nature of cooperation and triggering farmers to have broader knowledge by organizing associations to exchange the knowledge. Whereas, the ecological benefits were reducing air pollution caused by combustion of agricultural wastes, improving soil physical properties and restoring nutrients obtained from agricultural waste processing. The value of economic benefits estimated from agricultural waste processing to produce liquid bacterial fertilizer were 29.4% and 29.8% increase in income of rice farmers and maize farmers respectively. The overall score of perception of farmers applying agricultural waste processing was higher than those not applying.

Keywords
benefit, perception, waste

Topic
Agriculture system

Link: https://ifory.id/abstract/xPtCjdeA68Uy

Corresponding Author
SATRIANI S.T

Institutions
Universitas Hasanuddin
Jl. Malino, Borongloe, Bontomarannu, Kabupaten Gowa, Sulawesi Selatan 92119, Indonesia

Abstract
Abstract— The Tallo River is a drainage channel estuary in this area, in addition to being a resource provider, the Tallo River also has the potential to pose a threat of flooding because it is strongly influenced by tides. Regulatory Ponds are flood control structures built upstream from areas that will be protected from flood hazards. In this thesis the researcher analyzes the capacity of the Nipa-Nipa regulatory pool with the Ripple method. Flood tracing results obtained a maximum of 3,395,116.79 m3, while topographic conditions obtained a maximum of 3,583,270.96 m3 then optimization analysis based on the Ripple Method obtained with a volume that was accommodated during 1980-1984 was 2,508,330,462 m3, during 1985- 1989 was 2,158,594,429 m3, during 1990-1994 it was 1,721,928,984 m3, during 1995-1999 it was 2,072,035,680 m3, the volume that was accommodated during 2000-2004 was 2,526,941,033 m3, the volume that was accommodated during 2005-2009 was 1,996. 205,351 m3 and the volume that was accommodated during 2010-2014 was 1,913,798,405 m3. This shows that the capacity of the Regulated Pond storage can serve to reduce flooding in the Tallo River

Keywords
Flood, Storage Capacity, Ripple Method

Topic
Climate Change

Link: https://ifory.id/abstract/Tu72ZgKcdzUv

Corresponding Author
Bambang Setiawan

Institutions
a). Student of Study Program Agribussiness, Faculty of Postgraduate, Hasanuddin University, Jl. Perintis Kemerdekaan KM 10, Makassar 90245, Indonesia

b). Department of Agribusiness, Faculty of Agriculture, Hasanuddin University Makassar

E-mail : bambangsetiawan172[at]gmail.com

Abstract
The purpose of this study is to analyze strategies for strengthening various partnership models for cocoa marketing. At the level of the farmers of Polewali Mandar district, the population of this study amounts to 75 farmers divided into 3 groups at the level of the existing partnership models (companies, cooperatives and traders), The analysis technique used consists in using a SWOT analysis (Strengths, Weaknesses, Opportunities and Threats) to formulate objectives in the form of strategic actions based on external facts and internal facts to determine the strategy. The results showed that the internal factors of this study were: 1) Availability of land for cocoa farms 2) High potential productivity 3) Infrastructure available. The weaknesses of this study are: 1) a minimum of capital contribution, 2) limited availability of technology 3) pest and disease attacks. External opportunities include: 1) strong market demand, 2) ease of market access, 3) opening up investment opportunities, threats from this study 1) land-use change 2 ) price volatility and 3) the extreme climate.

Keywords
Strategy, Partnership Model, Farmer

Topic
Agriculture system

Link: https://ifory.id/abstract/HUeVxETvgJB9

Corresponding Author
Muh Ikmal saleh

Institutions
a). Student of Study Program Agribussiness, Faculty of Postgraduate, Hasanuddin University, Perintis Kemerdekaan street KM 10, Makassar city 90245, South Sulawesi, Indonesia
*email: muhikmal0102[at]gmail.com
b) lecturer at the department of social economics , faculty agriculture,Hasanuddin University, Perintis Kemerdekaan street KM 10, Makassar city 90245, South Sulawesi, Indonesia
c)Departmen of managemen, Faculty of Economy and busines, Hasanuddin Unversity, South Sulawesi, Indonesia

Abstract
ABSTRACT Potato (Solanum tuberosum L) is one of the horticultural products that receives priority for the development of diversified food consumption, so potatoes are one of the most important food products in the world. One type of potato grown by the people of Indonesia is the granola potato. In terms of cultivation, potatoes are more resistant to pests or diseases. Potato granola is one of the important plant products that have potential business opportunities, and is one of the leading commodities in the Tombolo Pao district. The method used in this study is a qualitative and quantitative method that includes: descriptive analysis, agricultural analysis, IFE matrix analysis and EFE, SWOT analysis. The results of the analysis show that the condition of the potato agribusiness system in the Tombolo Pao District still does not work optimally, due to the non-functioning of the upstream subsystem, where the acquisition of production facilities is still carried out individually, which causes the lack of production inputs, that is, the problem of potato granola seeds. In the crop subsystem, potato cultivation has provided farmers with a gain of Rp1,530 / kg with an R / C ratio of 1.25, which means that each rupee cash expense generated will generate an income of Rp1.25. Due to the resulting R / C ratio, it is feasible to develop this farm. In the marketing subsystem, potatoes have been marketed in Kalimantan and Sulawesi Southeast. Prices are determined by collectors. In the downstream (processing) subsystem, not all processed potato entrepreneurs use potatoes as raw material, which makes new potatoes sold in fresh produce. In the service and support subsystems, with the support of agricultural extension workers who accompany and provide information related to potato cultivation, but from the support capital, farmers have not used the credit provided by financial institutions because they still use Private capital. Based on the identification of internal and external factors, several wishes are obtained to move forward and learn from the farmer groups and the government.

Keywords
Agribusiness, Strategy Development, SWOT

Topic
Agriculture system

Link: https://ifory.id/abstract/tQXyrFE47TnJ

Corresponding Author
Fadhilah Trya Wulandari

Institutions
a) Mahasiswa Program Studi Perencanaan Pengembangan Wilayah, Sekolah Pascasarjana Universitas Hasanuddin, Makassar
*khatimahkhusnul38[at]gmail.com
b) Dept. Teknologi Pertanian Fak. Pertanian, Universitas Hasanuddin, Makassar *bulkisd[at]agri.unhas.ac.id
**hatta-jamil[at]agri.unhas.ac.id

Abstract
The management of cultural heritage areas as cultural tourism areas in Soppeng Regency have not been optimal, one of them caused by a lack of information about the potential and constraints of its development. This study aims to analyze the potential of the cultural tourism area and to develop a strategy for developing the area of cultural tourism in the Soppeng Regency. The analytical methods used were descriptive and spatial analysis to identify cultural tourism areas. IFAS-EFAS and SWOT analysis were used to determine the factors that influenced regional development and developed a strategy for development of cultural tourism areas in Soppeng Regency. The results show that the potential of cultural areas in Soppeng Regency consists of 6 tourism objects with high potential categories, 13 cultural tourism objects with moderate potential categories, and 10 cultural tourism objects with low potential categories. The characteristics of visitors to the cultural tourism area are the majority from within the South Sulawesi Province; Their types of educations are students and academicians from universities; Their occupations are students and employees; Their choice of transportation is with private property; and Motivation of the main visits are recreation and research. The plan to develop a cultural tourism area is directed in the form of a Cultural Tourism Zone Unit (SKWB). There are 4 SKWB namely SKWB I ( 9 cultural tourism objects), SKWB II (2 cultural tourism objects), SKWB III (12 cultural tourism objects), and SKWB IV (6 cultural tourism objects). The main strategies for the development of cultural tourism areas in Soppeng Regency are to increase the active participation of the community in preserving cultural heritage and developing cultural tourism, establishing regulations for protecting cultural heritage, increasing the competitiveness of cultural tourism potentials, and establishing priority areas for cultural tourism development.

Keywords
cultural heritage, tourism potential, cultural tourism

Topic
Urban & Transportation Sustainability

Link: https://ifory.id/abstract/HRmkY6uDbaTQ

Corresponding Author
Amanda Pricella Putri

Institutions
a. Regional Planning and Development / Youth Leadership Management. Graduate School of Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.
*email: akbar_pirman[at]yahoo.com
b. Geology Department, Faculty of Agriculture. Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.
c. Social-Economy of Agriculture, Faculty of Agriculture. Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.

Abstract
Abstract This article is motivated by the decreasing interest of young workers in the agricultural sector so that the average level of education of workers in this sector is much lower than in other sectors. This study aims to describe the role and perceptions of the youth and analyze strategies for developing the role of the youth in the agribusiness sector of Soppeng Regency, South Sulawesi Province. This research was conducted in Soppeng District on March to April 2019. The technique used in determining the sample in this study was snowball sampling. Data collection methods used were in-depth interviews, observations, and FGDs (Focus Group Discussion). The data analysis techniques used in this study were qualitative descriptive analysis and SWOT analysis. The youth prefer to be involved in supporting subsystems (private sector, government policy, BUMN, research and development, education, agribusiness infrastructure, credit and trading facilities) rather than in the marketing subsystems, farming, agricultural production, and processing facilities. The perception that the youth have in mind of the agribusiness sector in Soppeng district. The youth who are involved in agriculture sector for 0-2 years tend to be forced and they even consider it as a side job. Whereas, young people who have been involved for 2-7 years have made their profession as their priority. The strategy for developing the role of youth in agriculture in the agribusiness sector is to improve the capabilities of youth by establishing agricultural schools (vocational or campus), developing forums with specialized organizations focused on agriculture, and increasing government escort for the development of innovation technology and regulation of agricultural prices.

Keywords
youth, development strategy, agriculture

Topic
Agriculture system

Link: https://ifory.id/abstract/zv4JaD7LUfKx

Corresponding Author
aziza noor sheha arfah

Institutions
a. Department Agribusiness Study Program at Postgraduate Hasanuddin University.
*shehaaziza[at]gmail.com
b. Department of Fisheries Faculty of Marine Science and Fisheries, Hasanuddin University, Jalan Perintis Kemerdekaan Km. 10 Makassar 90245, Indonesia.

Abstract
Seaweed agribusiness, especially the type of Euchema Cottoni Sp, is widely cultivated in seawater areas, so that a seaweed agribusiness system is formed, where each of the agribusiness subsystems are interrelated with one another. Several obstacles were encountered, including: 1) capital is still private; 2) technology (tools, materials and ways) is still simple (traditional). 3) low information, especially the results of research and development technology; 4) fluctuating selling prices, 5) The availability of weather factors, and pests ,; 6) the lack of supporting institutions for agribusiness development such as the government, financial institutions, marketing and distribution institutions, cooperatives, formal and informal education institutions, extension institutions, Agribusiness Research institutions, guarantee and risk management institutions, So that there is no good and continuous collaboration between seaweed farmers and supporting institutions. With this problem, this study discusses the Strategy for Seaweed Agribusiness Support Subsystem Development Strategy in Marang District, Pangkep Regency as one of the goals of developing supporting institutions from aspects strategy of supporting service subsystem development, analyzing the development of supporting institutions, and developing seaweed agribusiness development. Informants were selected purposively, processing data using descriptive qualitative analysis methods in describing regional potential, SWOT analysis for the development of supporting institutions development strategies, and development analysis using AHP methods. The results showed that South Sulawesi Province, especially in Marang sub-district had the potential to be developed supported by the availability of facilities and infrastructure, land availability. The results showed that South Sulawesi Province especially in Marang sub-district had the potential to be developed supported by the availability of facilities and infrastructure, land availability which indicated that the supporting institutions of seaweed agribusiness were feasible to run, after conducting an analysis, it could be concluded that the supporting subsystems in agribusiness existed three, namely: government institutions, banking and cooperatives. These three things must be coherent with each other so that the policies given can benefit one another.

Keywords
Development, Strategy, Support Subsistems, Seagrass (Euchema Cottoni Sp) Agribusiness

Topic
Agriculture system

Link: https://ifory.id/abstract/CmaKwUNBpZv4

Corresponding Author
haidir haidir

Institutions
Hasanuddin University1, faculty of marine science and fisheries2, faculty of economics3

Abstract
Algae is an important product for the Indonesian economy. The development of seaweed cultivation in South Sulawesi offers promising prospects. The length of the coast reaches 1,937 km. The area of marine cultivation in South Sulawesi is 193,700 ha and about 10% is used for algae development. Takalar Regency has the potential of the natural resources of sea fishing. One of the potential marine resources that can improve the well-being of the Takalar district community is seaweed cultivation. The purpose of this study is to determine aquaculture revenues, marketing includes (costs, margins, efficiency) and development strategies for algae growing activities. The determination of the sample is done intentionally. This study uses qualitative and quantitative analysis methods. The results of this study indicate that the benefits of algae cultivation activity of Rp. 56,932,800 per year and Rp. 9,488,000 per cycle. The marketing institute consists of only 3 institutions, namely Seaweed Farmers. at). Collection of traders and wholesalers, b). Marketing costs incurred in the amount of Rp. 210, -/ Kg for collection traders and for large traders in the amount of Rp. 270, - kg, c). The highest marketing margin received by traders is Rp. 1750 / kg and for large traders Rp. 2000, -/ Kg. d). Marketing effectiveness is considered effective for recovery traders, at 0.97%, while for large recovery traders, it is considered ineffective at 1.08%. 3. Based on the results of a strong, probable and very feasible SWOT analysis, in order to obtain the maximum progress. The conclusion of this research is that the cultivation of algae Kappaphycus alvarezii in the sub-districts of Manggara Bombang and Sanrobone promises great opportunities given the vastness of the land and that market demand continues to increase. Marketing channels have also found that there is only one channel, so marketing costs are not too high And revenues are very profitable.

Keywords
Keywords: algae, marketing, Swot analysis.

Topic
Agriculture system

Link: https://ifory.id/abstract/32qnpZurTWmK

Corresponding Author
Yopie Brian Suryadhy Panggabean

Institutions
(a) Department of Agricultural Socio-Economics, Faculty of Agriculture, Hasanuddin University
(b) Departement of Agronomy, Faculty of Agriculture, Hasanuddin University
(c) Agribusiness Study Program at Postgraduate, Hasanuddin University
*panggabeanbrian[at]gmail.com
Perintis Kemerdekaan Km. 10 Makassar 90245

Abstract
Arabica coffee owned by Toraja especially North Toraja is very distinctive with the aroma and flavor produced so that it becomes its own attraction in the hearts of coffee enthusiasts everywhere. But behind the taste and aroma that is very unique there are many problems faced by Arabica coffee farmers in Toraja in particular. This study aims to analyze the potential of North Toraja Arabica coffee agribusiness, which is then followed by studying the benefits that can be done by using the concept of organic farmers to create an appropriate strategy to improve quality in Arabica coffee agribusiness competition. Data taken using observations and direct interviews in the form of a questionnaire to farmers that includes how much can be produced each harvest season, and the price received each sell the harvest to collectors, companies, and several parties who participated in this research. Primary data used in this study are quantitative and qualitative data. The results of this study indicate that the Arabica coffee owned by Toraja has the potential, farmers as producers have a very big role in improving the performance of Arabica coffee development programs. However, observations show that policies in developing human resources in rural areas, especially in terms of farmers quality and skills, are relatively not working as expected. To reduce the level of dependence of farmers to traders, it is necessary to strive for financial institutions that are able to provide capital needs to farmers in a fast time without complicated procedures. Therefore farmers have alternatives to choose marketing channels that can provide better prices.

Keywords
North Toraja, Potential Of Arabica Coffe, Farmer Income Strategy

Topic
Agriculture system

Link: https://ifory.id/abstract/97aVLk42tpmF

Corresponding Author
Parea Rusan Rangan

Institutions
University of Hasanuddin, Makassar, Indonesia

Abstract
The geopolymer of fly ash (FA), rice straw ash (RSA) and laterite soil (LS) was prepared. The strength of the geopolymer mortar with FA/RSA/LS percentage ratio of 41,67/16,67/41,67 was tested. The geopolymer was activated with sodium hydroxide (NaOH). Effect on air curing on compressive strength as well as the optimum mix proportion of geopolymer mortar was investigated. It is possible to achieve compressive strengths of 1.64 N/mm2, 1.72 N/mm2 and 3.22 N/mm2, respectively for the 12 M sodium hidroxide-activated geopolymer mortar after 3, 7 and 28 days of casting when air cured. Results indicated that the increase in curing period increased the compressive strength.

Keywords
fly ash, rice straw ash, laterite soil, geopolymer mortar

Topic
Waste to Energy Potential Resources

Link: https://ifory.id/abstract/8mpn9ALvTujQ

Corresponding Author
Abdul Azis

Institutions
(1)MAGISTER STUDENT HASANUDDIN UNIVERSITY
(2)DOCTORAL STUDENT HASANUDDIN UNIVERSITY
(3) LECTURER DEPT. CIVIL ENGINEERING HASANUDDIN UNIVERSITY
(4) LECTURER DEPT. CIVIL ENGINEERING, HASANUDDIN UNIVERSITY

Abstract
In the construction of transportation network, road infrastructure is being developed intensively . Quality assurance is needed to prevent failure and ensure the length of performance. for measuring the quality of roadworks, especially asphalt, we can now use the laboratory version of Light weight deflectometer (LWD), which was developed by bina marga. Light weight deflectometer (LWD); has been developed for evaluation of surface stiffness that can be used to estimate the degree of compaction and determine modulus of elasticity. This research is based on laboratory testing that purpose to analyze the effect of asphalt density (AC-WC) towards deflection value and modulus of elasticity by using the laboratory version of LWD and then find the correlation between the elastic modulus of asphalt to variety in the height of mashing load.

Keywords
LWD, modulus elasticity, AC-WC

Topic
Technology

Link: https://ifory.id/abstract/tTXH4k9pGmBh

Corresponding Author
Syamsu Alam

Institutions
Faculty of Economics and Business, Hasanuddin University
Perintis Kemerdekaan Street, KM.10, Tamalanrea, Makassar - Indonesia 90245

Abstract
Small Medium Enterprises (SMEs) of Chicken farm is one of the important business sectors in regional economic development. Therefore, the development of its business competitiveness is very important to increase its contribution to both regional and national economy. This study aimed to identify and analyze important factors that affect variables of environmental aspects, entrepreneurship aspects, organizational resources aspects, and competitiveness aspects, primarily at chicken farming SMEs in Sidrap Regency, South Sulawesi. This study was conducted using a quantitative approach. The number of research samples is 115 units of chicken farming SMEs. The analytical method used in this study consisted of both descriptive analysis, and Confirmatory Factor Analysis (CFA). Then, the data is processed by using the IBM AMOS software. The results showed that pro-business government policy was an important factor that affected variable of environmental aspect. Then, the ability to take risks was an important factor that influenced variable of entrepreneurship aspect. The human resource factor was an important factor that affected variable of organizational resource. Furthermore, quality factor was an important factor that influenced competitiveness variable

Keywords
Environmental aspect, Entrepreneurship aspect, Organizational resources aspect, Competitiveness, Chicken farming SMEs

Topic
Agriculture system

Link: https://ifory.id/abstract/kaWvqmD39Ldt

Corresponding Author
Bryan Nobel Rori

Institutions
HASANUDDIN UNIVERSITY

Abstract
In the waters of the Tallo River there is an interaction between fresh water and sea water due to the tidal events that greatly affect the value of salinity. This interaction is one of the influences on the occurrence of the spread of salinity. The purpose of this study was to describe the distribution of salinity and flow velocity that affected salinity in the Tallo Estuary area, especially in the riverbed area during high tide and low tide conditions. Data collection was carried out in the Tallo River Estuary area with a distance between 400 m. By using ADCP (Acoustic Doppler Current Profiler) and CTD (Conductivity Temperature Depth). The pattern of spreading salinity is illustrated by the ArcGis 10.3 program. The results showed an increase in salinity found in the Muara Tallo area when tide conditions and conditions receded into the river with a distance of 3.6 km, as well as flow velocities that affect salinity where at an increase in flow velocity will result in increased salinity while at low tide the flow rate will result in decreased salinity. Based on water classification, the Tallo Estuary area can be categorized as mostly brackish water.

Keywords
Tallo River, Salinity, Stream Velocity

Topic
Climate Change

Link: https://ifory.id/abstract/WM2yQKDXdk9B

Corresponding Author
Vidya Febrianti

Institutions
Agribusiness Study Program, Graduate School Hasanuddin University, Makassar, Indonesia.

*vidya[at]pasca.unhas.ac.id

Abstract
Abstract: The research aims to find out (1) the flow of ornamental plant supply chains within the company (2) the efficiency of ornamental plant supply chains within the company (3) the gender relations in the ornamental plant supply chain process within the company. The data used in this study are primary data and secondary data. Data is processed into three stages. first analysis of ornamental plant supply chains using three supply chain streams, supply chain performance is measured by the efficient use of time, cost, and income. Gender relations in equality and fairness analysis will be easier to see access and control. The results of this study indicate that the flow of products or goods involves the flow of physical products from suppliers to consumers through the chain, as well as product returns and service returns. Financial flow is a picture of the flow of money / capital that starts from the consumer as a buyer and then flows into the chain and will eventually reach the producer or company to be used as production costs. Information flows between CV. Malino Florist can be in the form of price, quality, good cultivation methods, and the amount of production. The flow of information flows reciprocally from the company to partners to consumers and vice versa, the total marketing costs incurred by the company CV. Malino Florist Rp. 50,940,996 and get a total profit of Rp 55,159,004 with a R / C Ratio of 2.08, it can be seen that from the results of the R / C obtained, ornamental plant companies are categorized as efficient and profitable because the R / C Ratio obtained> 1 Ornamental plant distribution activities covers activities carried out by employees ranging from harvesting activities to transportation activities with an average of 2.5 or equal to 10 hours carried out once a week, in accordance with the basic concept of "Just In Time" in the supply chain. Access and control of resources in the ornamental plant business is controlled by one company member, the leader (male). The time spent working for men is greater than for women and there is a concentration of the role of women in domestic activities while external activities are controlled by men. The pattern of decision making in a dominant company is carried out by one company member, namely the leader (male).

Keywords
Ornamental Plants, Supply Chain , Gender Relations

Topic
Agriculture system

Link: https://ifory.id/abstract/jTmbxVqUWEaR

Corresponding Author
Chalvyn Silasa Pakidi

Institutions
1Doctoral Program of Agricultural Science, Hasanuddin University, Makassar, Indonesia
2Faculty of Marine Science and Fisheries , Hasanuddin University, Makassar, Indonesia

Abstract
The aims of this study were to evaluate survival dan morphological performances of tiger shrimp P. monodon after methanol/water (1:1) extracted Sargassum duplicatum immersion under different dosages. Four treatments were applied during this study, which were 600 (A), 700 (B), 800 (C) and 0 ppm (D) as control. Samples of PL-4 of tiger shrimp were immersed then the survival rates were calculated for each treatment. The number of post larva for each treatment was 6 individuals. The morphological performances of larvae were observed under microscope to access antennules, hepatopancreas, front gut, midgut, uropods, tail muscle, chromatophores, fouling and stress appearances. The “+” sign was recorded for larvae with normal morphological performances; in contrast the “-“ sign was recorded for samples with non-normal performances. The results of this study showed that the immersion of tiger shrimp post larvae in methanol:water extracted Sargassum duplicatum did not significantly affect survival rates of tiger shrimp post larvae. Morphological performances of tiger shrimp post larvae observed in antennules, front gut, midgut, uropods, tail muscle, chromatophores, fouling and stress appearances were similar among all treatments. In contrast, hepatopancreas showed anomaly between treatments indicating Sargassum duplicatum contain bioactive to combat microorganisms cause diseases on tiger shrimp.

Keywords
survival rates, morphological performances, Sargassum duplicatum, tiger shrimp

Topic
Agriculture system

Link: https://ifory.id/abstract/dMC8RhzFgbKa

Corresponding Author
Amanda Pricella Putri

Institutions
a. Doctoral Program of Agricultural Science, Hasanuddin University, Makassar, Indonesia
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.
b. Faculty of Marine Science and Fisheries , Hasanuddin University, Makassar, Indonesia
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.

Abstract
Abstract The aims of this study were to evaluate survival and morphological performances of tiger shrimp P. monodon after methanol/water (1:1) extracted Sargassum duplicatum immersion under different dosages. Four treatments were applied during this study, which were 600 (A), 700 (B), 800 (C) and 0 ppm (D) as control. Samples of PL-4 of tiger shrimp were immersed then the survival rates were calculated for each treatment. The number of post larva for each treatment was 6 individuals. The morphological performances of larvae were observed under microscope to access antennules, hepatopancreas, front gut, midgut, uropods, tail muscle, chromatophores, fouling and stress appearances. The “+” sign was recorded for larvae with normal morphological performances; in contrast the “-“ sign was recorded for samples with non-normal performances. The results of this study showed that the immersion of tiger shrimp post larvae in methanol:water extracted Sargassum duplicatum did not significantly affect survival rates of tiger shrimp post larvae. Morphological performances of tiger shrimp post larvae observed in antennules, front gut, midgut, uropods, tail muscle, chromatophores, fouling and stress appearances were similar among all treatments. In contrast, hepatopancreas showed anomaly between treatments indicating Sargassum duplicatum contain bioactive to combat microorganisms cause diseases on tiger shrimp.

Keywords
survival rates, morphological performances, Sargassum duplicatum, tiger shrimp

Topic
Agriculture system

Link: https://ifory.id/abstract/T26hKbdgQqzN

Corresponding Author
Amanda Pricella Putri

Institutions
a. Food Crops Cultivation Study Program. Politeknik Pertanian Yasanto, Merauke.
Mandala, Merauke Sub-District, Merauke Regency, Papua
*email: jennyternate33[at]gmail.com
b. Faculty of Agriculture. Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.

Abstract
ABSTRACT Excessive use of pesticides will increase the cost of control, heighten the death of organisms and can reduce environmental quality. This study aimed (1 ) to analyze the behavior of shallot farmers in using pesticides, and its impact on the environment ; (2) to propose the management of the agricultural land in Isonom Mbiasi Village, especially in terms of pesticide uses and the handling of packaging.The research was conducted in Tanah Miring Sub-District, Merauke Regency. The samples were chosen using the qualitative and quantitative methods. The primary data were collected through observation interviews and questionnaires, while the secondary data were obtained from evidences, notes orreports.The research results indicated that the knowledge aspect of the 27 respondents about the use of pesticides was very good (97%) The farmers knowledge would become more effective if their participation to join in the meeting activities done by the Government Institutes about the cultivation of the red onions, the farmers would understand better how to use pesticides and would understand the dangers of using pesticides either to the consumers or to environment. The behavior of the farmers was also good (98%), but the use of registered and not expired pesticides was permitted were incompatible with the regulation because they argued saying that the expired pesticides could still be used as long as the packing was not damaged and that even the expired Pesticides could still increase the production. The farmersaction to protect their bodies by putting on only long-armed shirts and short pants was caused by their lack knowledge that they did not know the true function of the uses of the overall protection clothes.

Keywords
red onion farmers, farmersbehavior, pesticides

Topic
Agriculture system

Link: https://ifory.id/abstract/zxkKCZanvFt4

Corresponding Author
Humayatul Ummah Syarif

Institutions
1Lecturer of Mechanical Engineering Department, Fajar University, Indonesia,
2Lecturer of Phisics Department, Hasanuddin University, Indonesia

Abstract
The chemical composition of rice husk obtained after the process comparing to before the process of distillation using Scanning Electron Microscope (SEM). The study using SEM, there is an increase before and after the process distillation. For 100% Normalized Sum matrix is 2.37% (before the process) and 2.82% (after the process). It means that there is an increase percentage of about 0.45%.

Keywords
Distillation, Briquettes Absorber, Rice Husk, Clean Water

Topic
Waste to Energy Potential Resources

Link: https://ifory.id/abstract/j8HxBCnAP4Uc

Corresponding Author
Fadhilah Trya Wulandari

Institutions
a) Program Studi Budidaya Tanaman Pangan Politeknik Pertanian Yasanto Merauke *yasinsmkntamir[at]gmail.com)
b) Fakutas Pertanian Universitas Hasanuddin makassar
*rahimdarma[at]gmail.com
**nixia gany[at]yahoo.com

Abstract
Harvesting rice conventionally is generally done using traditional tools. Many obstacles on harvesting using traditional tools such as fecal contamination, reduced the harvest. This research aimed to analyze the use difference between the combined Harvester-CH and sickles, either from the cost side or labors and efficiency. The research was a case study of the paddy farmers who used CH with 10 informants consisting of the chairman of farmer union, agricultural extension agent, operator of Combined Harvester, and farmers. The research results indicated that the use of Combine Harvester provided additional rice production of 275 kg rice/ha, and additional income of Rp.3,570,000. The efficiency level of rice harvest using human power was 5,27 kg rice/ha, while the efficiency of CH rice harvest was 11,29. The CH machines were suitable to operate on tidal land and in brackish water. Harvester traditionally needed high waged workers, while some workers were no interested working in the fields. Cultivating farmers preferred to use CH machines on their paddy farming. Meanwhile, the formers worked as the waged laborers in order to supplement their family income. The cost of the harvest using Ch machine was Rp. 1,800,000/ha while the cost of the conventional harvesting was 4,000, 000/h. However, the presence combine harvester machine could not take the position of the workers as paid workers or the labor power in the agriculture sector.

Keywords
harvest efficiency, Combine Harvester, brackish water, tides

Topic
Agriculture system

Link: https://ifory.id/abstract/4CAPd8RYMNfL

Corresponding Author
Rakhmad Armus

Institutions
University of Hasanuddin

Abstract
We determined the ratio of the concentration of dimethylsulfide (DMS) and metabolic precursors, dimethylsulfoniumpropionate (DMSP), in water and particulate samples obtained along the transect through the runoff of the Pangkep and Tallo rivers in the rainy season and the dry season to the open sea. In most cases, we observed a positive correlation between the concentration of biogenic sulfur species and salinity, especially when the concentration of sulfur compounds was measured for chlorophyll as a measure of phytoplankton biomass. Normal concentrations of DMS, dissolved DMSP, and particulate (intracellular) DMSP increase non-linearly with salinity from estuaries. DMS however, is generally highest near the surface and decreases by moving away from the euphotic zone. At the mouth of the Tallo River, runoff dominated by surface water affects the dominance (D) of phytoplankton from the Makassar city river flow, and the reduction of nutrients from the sea cannot be predicted. Pangkep river estuary abundance of phytoplankton is more dominant than the genus Chaetoceros sp. The value of phytoplankton dominance is associated with the decline of organic nutrients from river mouths, this shows that the absorption of phytoplankton is the main surface up weeling process that is responsible for reducing nutrients. The average value of diversity index is 1.11; 0.082 and 0.521 while the value index of diversity, water surface and dominance in the subsurface ocean that is 1.14; 0.088 and 0.55. The result of the distribution of spatial abundance of phytoplankton in the west season and seasons east shows the level of k water surface phytoplankton in the area is different .

Keywords
Pangkep river, Tallo river, Salinity, Sulfur Compound , Spermonde, Dimethylsulfide

Topic
Climate Change

Link: https://ifory.id/abstract/LakwXmz6tEAC

Corresponding Author
Amanda Pricella Putri

Institutions
a. Agricultural Systems Study Program. Graduate School of Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.
*email: beatrixrahawarin69[at]gmail.com
b. Faculty of Agriculture. Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.

Abstract
Abstract The Wapeko village area was targeted by investors because of its geographical location and natural resource wealth, but the lives of residents of the Wapeko village were almost 100% indigenous / local Papuans, their lives still mixed with a low level of education and economy. This research aimed (1) to analyze the implementation of the development program of the integrated agriculture system in Wapeko Village to achieve theaims of the program; (2) to analyze the achieved results in agriculture products and the incomes of the community through the development of the integrated agriculture system; (3) to develop alternative strategies in order to develop integrated farming systems in realizing a sustainable livelihood pattern of the local communities.The research was conducted in Wapeko Village Kurik Sub-District,he method used was a qualitative method which used quantitative instruments. The data collection was done using direct observation in the field and interviews with the respondents through question naires. The respondents involved 25 households of the local Papuans as well as the stakeholders who were directly involved in the program. The analysis of the revenue used the Farming analysis, and the Strategy analysis through SWOT method. The research results indicated that the collaboration program between Medco Foundation and Yasanto had an impact especially on the development of the Integrated Agriculture System (Sitandu) which was shown by the change in the pattern of the basic livelihood as well as the increase of the income of the local community.

Keywords
Integrated Farming System (Sitandu), Papuan Local Community

Topic
Agriculture system

Link: https://ifory.id/abstract/RcuyBDgp6KWC

Corresponding Author
Fadhilah Trya Wulandari

Institutions
a) Program Studi Budidaya Ternak, Politeknik Pertanian Yasanto, Merauke
*rossadi1980[at]gmail.com
b) Program Studi Sosial Ekonomi Pertanian, Fakultas Pertanian, Universitas Hasanuddin
*rahimdarma[at]gmail.com
b) Program Studi Sosial Ekonomi Pertanian, Fakultas Pertanian, Universitas Hasanuddin
**syatrianty62[at]gmail.com

Abstract
Sago processing as local food continues, however, the sago pulp is not utilized optimally even unused so that there is a buildup of sago pulp waste which is increasing and can pollute the environment. This research aimed (1) to investigate the potentials of sago pulp which could be used as the feeds of goat livestock; (2) to investigate the increase of thebody weight of goat livestock; and (3) to investigate the effect of use of sago pulp fermentation on the efficiency consumption, palatability, KcBK, given to kacang goat livestock.The research was conducted in Merauke Regency by using 12 kacang goats. The research was conducted for 2 months from May through July, 2018. The goats were given three types of treatments and were divided into four groups (TO T1 and T2) with the following model : TO as the control group and received 100% of grass, T1 as the control + 20% of sago pulp fermentation and T2 as the control + 30% of sago pulp fermentation. The method used was Randomized Block Design (RBD), and the Variance analysis was used to analyze the efficiency of the feed of sago pulp waste, the level of palatability, the digestibility of dry matters (KcBK), and the body weight gain of the livestock. And in order to look at the effect of the feeds before and after the treatments, T test was used. The research results indicated that the increases of the body weight of the male kacang goats treated with 20% and 30% were 7. 05 kg and 12. 3 kg, respectively. The treatments using the sago pulp fermentation at the level of 20% and 30% were lower (5.9 kg) of the 30% group and (4.48) of the 20% group, compared to that of the control group (6.7 kg), A significant difference was also shown between the body weights of the male goats and female goats (12.3 kg and 5,9 kg respectively. The feed consumption of the kacang goats in the 30% treatment was 28.930 gr better than the control group which was 22.370 gr, and the treatment with 30% of sago pulp fermentation was more eff icient 13. 1 % compared to the control group which had only 7.87%. The KcBK in kacang goats showed an increase of digestibily of the dry matter in the 30% treated male goats was significantly different (63.25%) compared to that in the 30% female goats (59. 40%). This proved that the addition of sago pulp fermentation given to the kacang goats could increase the body weight, feed efficiency, palatability level and therefore it could be used asthe substitute feeds in the dry season.

Keywords
Kacang goats, sago pulp fermentation

Topic
Agriculture system

Link: https://ifory.id/abstract/BWvkKCtx7JcP

Corresponding Author
Amanda Pricella Putri

Institutions
1 Education Department. Luwu Utara Regency, South Sulawesi.
Jl. Simpurusiang No. 27 - Masamba. South Sulawesi
*email: adesigncentre29[at]gmail.com
b. Regional Planning and Development Department. Graduate School of Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM. 10. Makassar, South Sulawesi.

Abstract
ABSTRACT The entrepreneuship skill education program is a program of the non-formal education carried out by PKBM to provide knowledge, skills and entrepreneurship attitudes for residents based on the potential resources and business field needs in the citizens. The research is aimed to: (1) analyze the factors that influencing the development of the entrepreneuship skill education program (2) formulate the development strategy of the coastal area potential based the entrepreneuship skill education program. The research used the qualitative descriptive method and it was conducted in four districts with the coastal areas characteristics at North Luwu Regency namely: Malangke District, West Malangke District, Bone-Bone District and Tana Lili District. Data were collected using the documentary, questionnaire, and in-depth interview. The data were analyzed using the descriptive, principal component, and SWOT analyses. The research results indicated that: (1) influencing significantly in the development of the entrepreneuship skill education program at North Luwu Regency are: (1) natural resource potential (2) business field needs (3) partnership cooperation (4) institutional assistance in business pioneering ( 5) skills-based curriculum development based on work and business needs; (6) education level (qualifications) and tutor competence (7) access (distance) to PKBM (8) motivation and mindset of learning citizens (9) permanent work of learning residents, and (10) health conditions of learning residents. The development strategies of the entrepreneuship skill education program are the aggressive strategies through; (1) the development policies of the entrepreneuship skill education program based on regional potential and business opportunities (2) the standardized skill-based curriculum compilation based on competence and commodity types (3) the accompaniment policies of the entrepreneuship skill education program (4) the cooperation development with related stakeholders to carry out the improvement of the tutors competence based on regional potential and business opportunities, and (5) the program partnership establishment between IKM/DUDI and PKBM institutions in an effort to ensure the labour availability and absorption.

Keywords
strategy, PKBM, entrepreneurship skills education.

Topic
Social and Economy Framework of Energy

Link: https://ifory.id/abstract/pxEWAwY9846n