bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of human activities on coastal landform recovery after the tsunami at Padang Seurahet coastal zone, Meulaboh, Indonesia
Authors: Setyawan W B 
Published: March 2021

Abstract
Padang Seurahet coastal zone was eroded by tsunami of 26 December 2004. As well as the other coastal zone that eroded by the tsunami, at the coastal zone immediately occur recovery processes after the event. This study depicts how a recovery process of the coastal zone has been influenced by human activity. Images from Google Earth were used to analyze coastal landform condition visually before and after the tsunami. Results of this study show that the effect of the tsunami on the coastal zone and process of restoring the coastal zone in Padang Seurahet is affected by the existence of an old seawall remain along the coastline that was built to protect the coastal zone from wave erosion before the tsunami.
The effect of papain and bromelain enzymes on the growth and feed utilization of post larvae Litopenaeus
vannamei
Authors: Arisa I I , Muchlisin Z A , Purba S , Muhammadar M , Mellisa S 
Published: March 2021

Abstract
The aim of this research was to evaluate the effect of papain and bromelain enzymes in feed on growth and feed utilization of post larvae Litopenaeus vannamei shrimp. The research was conducted during 23 January to 2 March 2020 at the Fish Hatchery Laboratory, Faculty of Marine and Fisheries, Syiah Kuala University. The completely randomized design consisting of four treatments and three replications were used in this study (A (feed without enzyme); B (feed + 1% papain enzyme); C (feed + 1% bromelain enzyme), and D (feed + 1% papain enzyme + 1% bromelain enzyme)). The shrimp was fed with the tested feed five times on 07.00 AM, 11.00 AM, 03.00 PM, 07.00 PM and 11.00 PM for 42 days. The ANOVA test results showed the addition of papain and bromelain enzymes in the feed had a significant effect on weight gain, daily growth rate and specific growth rate of vannamei shrimp (P<0.05). However, there was no significant effect on its survival, feed conversion and feed efficiency (P>0.05). The best treatment was found in treatment D with the weight gain of 1.15 g, daily growth rate of 0.027 g day-1, specific growth rate of 7.14% day-1, feed conversion ratio of 1.85, and feed efficiency 54.15%, but the highest survival was found at treatment A. It is concluded that the best treatment is a combination between of 1% papain enzyme and 1% bromelain enzyme).
Adoption of product diversification technology in marginal pond land
Authors: Hartati  , Nuryadi A M , Husein H 
Published: March 2021

Abstract
Fishpond farmers cultivate their pond lands on marginal land conditions by means of subsistence. The research was to analyze the pond’s management, the income of the pond farmers, and the subsistence pond business development model towards product diversification. This research was conducted on ponds in Kendari Bay, Kendari, Southeast Sulawesi, Indonesia. Determination of respondents using purposive sampling method with the consideration that pond farmers have carried out milkfish cultivation in the last three years. This study uses a simple statistical approach, income analysis, descriptive analysis and product diversification model. The main findings of this research are that pond farmers have applied fertilization technology, pest eradication and water circulation. Fertilization grows moss which is used as milkfish feed. Most of the respondents only provide moss as the only feed for milkfish. On the other hand, the pond land has also been polluted. The results of this study show that subsistence pond farmers have very little income, only Rp. 4,689,000/year. Thus, the recommended model for developing a pond business is a product diversification model. The product diversification referred to is: 1) milkfish and shrimp cultivation, 2) thorn-pulled milkfish and frozen shrimp processing, 3) Utilization of dragon fruit cultivation pond embankments, 4) fishing areas, and 5) culinary grilled fish from the pond. Based on the results of product diversification simulation analysis, it is known that the pond farmers can increase their income through product diversification.
Dynamic of behavior of the small and medium scale fisheries traders in Cilincing District, North Jakarta encountered the pandemic of Covid-19
Authors: Widihastuti R , Hikmah  , Nurlaili  , Purnomo A H 
Published: March 2021

AbstractThe Covid-19 pandemic occurred in early 2020, precisely at the end of February. The Covid-19 pandemic is a global problem, prompting the government to implement a large-scale Social Restriction (PSBB) policy. This policy certainly has an impact on business continuity. One of them is a small-scale fishing community group that is feeling the impact of the covid-19 pandemic in Indonesia. Small-scale fishing businesses are fishermen with fleet users under 10 GT. Although they have a normal marine routine or no change, some problems are found when there is a decrease in sales and build-up of catches. This issue supports the reason why research is done. The research was conducted in July 2020, with the location of Cilincing District, North Jakarta. Data retrieval techniques are conducted in-depth interviews, while data analysis is done qualitatively supported by quantitative data. The analysis shows that the dynamics of small-scale and middle scale fishery marketers’ behavior in the face of the Covid-19 pandemic are a) Lowering the price of fresh fish and b) Selling fresh fishes to fishery business of salted fish processor
Ectoparasite infections on Mangrove Crabs (Scylla sp.) in soft shell crab aquaculture in Banda Aceh city, Indonesia
Authors: Putra D F , Ashari R , Nurfadillah N , Othman N 
Published: March 2021

AbstractThis research examined the prevalence and intensity rate of ectoparasites that infected mangrove crab (Scyllasp.) at crab aquaculture area in Banda Aceh City, Indonesia. The study was conducted at three soft shell mangrove crab aquaculture in three different areas. Purposive sampling method was used within three aquaculture sites at Cot Langkeuweh, Gampoeng Blang, and Lamjabat village. The targeted organ was carapace, walk and swim leg and gill. Results showed that there were five parasites found from three family such asZoothamnium sp. Vorticella sp., and Epistylis sp. Octolasmis sp., andCopepoda sp.The highest prevalence rate wasEpistylis sp. with value of 50-60% whereas the lowest prevalence wasZoothamnium sp. andOctolasmis sp.with its value of 20%. The highest intensity level wasOctolasmis sp., andZoothamniumsp. with value of 8-11.3 ind/species, whereas the lowest intensity wasCopepoda sp. with value of 2 ind/species.
Application of virgin coconut oil in feed in efforts to increase growth and survival rate of red tilapia (Oreochromis sp.)
Authors: Febri S P , Fikri A , Hanisah  , Nazlia S , Zuraidah  , Putriningtias A , Faisal T M , Murdhiani  , Muliari  
Published: March 2021

AbstractThe use of natural ingredients in commercial feed has been widely used in the field of cultivation. This natural ingredient is used as a feed additive to increase feed efficiency and promote growth. This study aimed to analyze whether VCO has an influence on the growth of red tilapia (Orechromissp.). The research method used was the experimental method with 4 treatments and 3 replications (P0 = control; P1 = 5 ml VCO/500 g feed; P2 = 10 ml VCO/500 g feed; P3 = 15 ml VCO/500 g feed). The results showed that the addition of VCO to commercial feed had no effect on the growth in absolute weight, daily growth, survival rate and feed conversion ratio of red tilapia. This happens because the VCO dosage used was not suitable so that it was not effective against the maximum energy intake for red tilapia.
Morphometric variations of tropical eel Anguilla bicolor (McClelland, 1844) harvested from different locations within Aceh waters, Indonesia
Authors: Batubara A S , Nur F M , Perdana A W , Syahril A , Muchlisin Z A 
Published: March 2021

Abstract

Anguilla bicolor is a commercial and predominant species within the eels group in Aceh waters. The objective of the present study was to analyze the morphometric variation of the A. bicolor collected from three different locations in Aceh waters, Indonesia. A total of 18 individuals of fish samples (6 individuals from every location) were measured for traditional-truss network morphometric characters. The univariate (ANOVA) analysis showed that the morphometric of the three eel populations were not significantly different (P > 0.05). Multivariate (Discriminant function analysis, DFA) analysis was successfully grouping three eel populations into three groups, where A. bicolor SKL and A. bicolor TB were more similar than A. bicolor KJU populations.
Generation of ocean internal wave with vertical-slice hydrodynamic simulation
Authors: Akhyar M , Wafdan R , Haditiar Y , Ikhwan M , Setiawan I , Rizal S 
Published: March 2021

AbstractThe instability of the density of seawater causes the formation of internal waves in the sea. This phenomenon is difficult to observe visually but can be studied with a hydrodynamic model approach. This study investigates the internal waves caused by underwater obstructions (seamounts) and the stratified density with a two-dimensional marine hydrodynamic model. Four scenarios are simulated in studying internal waves. Two scenarios used one barrier with uniform density and stratified density (based on the Brunt Vaisala stability frequencyN2= 5 x 10-4s-2). Meanwhile, the other two scenarios use two barriers with uniform density and stratified density (based on the Brunt Vaisala stability frequencyN2= 5 x 10-4s-2). Based on the simulation results, it is known that the density conditions have a significant effect on the dynamics of ocean currents. In hydrodynamic simulations of one and two barriers with varying or stratified densities, current resonances and density resonances are formed underwater topography. Meanwhile, in uniform density, the currents formed the rotor, cavity, turbulence, and resonance with the underwater topography. Thus the current dynamics are stronger in the case of uniform density than in the stratified density. It has implications for differences in the mixing of suspended matter in the sea. So this study can be useful in the study of sediment transport, upwelling, the thermocline layer, energy from internal waves, and the distribution of plankton or fish larvae.
A Novel Aided Diagnosis Schema for COVID 19 Using Convolution Neural Network
Authors: Mahdi Mohammed Salih , Abid Yaser M. , Omran Alaa Hamza , Abdul-Majeed GH 
Published: March 2021

Abstract
Lately, the COVID-19 pandemic is the first reason of deaths in people. Where the number of patients who have the same symptoms increased; however, the main causative agent separated and analysed. At the first, it called a novel coronavirus (2019-nCoV) then it was renamed as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that cause a disease called COVID- 19. One of the symptoms of the disease is the difficulty breathing caused by lung damage that needs to be detected earlier as much as possible. Chest X-ray images are one of medical images, which can be read by physicians to detect COVID-19. In this paper, the suggested Schema of convolutional neural network (CNN) that can aid the doctors in hospital to improve the diagnosis of the five different classes (COVID-19, MERS SARS, ARDS and Normal). For evaluating testing set, the practical outcomes demonstrates the suggested Schema of CNN classifier with an accuracy of 98%.
AIOT-Arch: Furthering Artificial Intelligence in Big Data IoT Applications
Authors: Said Sandra , Ihab Rowan , Hesham Ossama , Tabl Islam Abou , Maged Nu , Youssef Sherin , Elagamy Mazen 
Published: March 2021

Abstract
Applications for the Internet of Things (IoT) have evolved in excessive numbers, producing a vast amount of data needed for intelligent processing. The varying IoT infrastructures such as cloud and IoT application layer protocol limitations in the transmission/receiving of messages become the barriers in the implementation of intelligent IoT apps. In this paper, we review the importance of Big data, cloud computing and fog computing in IoT and the challenges of using machine learning in IoT. Finally, we discuss the general statistics of using artificial intelligence in IoT applications.
A mobile based communication solution for monitoring remote agricultural locations
Authors: Elshamy O , Fayed I , Khalifa A , Abdeen A , Zaher N 
Published: March 2021

Abstract
In this paper a method for the effective transmission of data, from a Wireless Sensor Network (WSN) in a remote agricultural location with limited connectivity, is proposed; along with a meaningful visualisation of the data at the user end to help in decision making and control of the irrigation system. The paper encompasses three main segments which are data compression, checking for network availability, and user interface. First data compression is implemented to reduce the amount of transmitted data, due to limited connectivity in the area, which is translated in low data rate and high cost of sending the data. Four different techniques are compared: Huffman encoding, Lempel-Ziv-Welsh (LZW), differential encoding, and Run Length Encoding (RLE) to carry out data compression, where Huffman encoding showed the best results when combined with differential encoding. The second phase is the handling of poor network conditions in the agricultural plant by switching between two different communication modes: Mobile data and Short Message Service (SMS). Lastly, the user monitoring centre which is a mobile application that allows the user to monitor and control the agricultural plant remotely. It includes mapping and visualization of temperature and soil moisture data and a control system to control the irrigation system. The solution presents a low-cost alternative for start-up agricultural projects in third world countries, where network instability is an issue and off-the-shelf expensive solutions are not a viable option.
Towards Developing Test Case Plan for Medical Report Management System (MRMS)
Authors: Norita  , Firdaus  , Johanna  
Published: March 2021

Abstract
Software testing is known as one of the main activities in the software development life cycle that can cause system failure without a proper plan. The testing phase consists of a few activities, such as developing the test case plan, the test design, and also the execution and evaluation process. Medical Report Management System (MRMS) is one of the subsystems of the Hospital Management System that has been proposed to overcome all issues when using the manual process. The MRMS helps in controlling and monitoring the hospital records and this can affect the hospital performance. Due to that reason, a proper and well plan test case plan is needed to make sure that MRMS execute as what has been proposed by the hospital staff. This project proposed a test case plan for the testing process of the MRMS. The test plan will be used for the testing processes and the results of the testing phase will be reported in future work. The test plan will be used to plan the testing phase wisely and provide solutions in order to alleviate common random testing issues. This MRMS has different characteristics that need to be verified. If it’s not tested as a whole, the users may find that the system becomes very slow or may malfunction when applications for medical reports are high at one time.
Critical Implementation Factors for Cloud-Based Enterprise Resources planning in the Nigerian Maritime Transport and Supply Chain
Authors: Kuranga A , Maslin M , Maarop N 
Published: March 2021

Abstract
Technology has deeply impacted the practice of shipping in the maritime industry worldwide, this explains the way and manner big organizations have engaged modern technology like Cloud-based Enterprise Resources Planning, to manage the key parts of their businesses. Recent research and practices have shown that cloud-based ERP systems if implemented correctly could be a great beneficial advantage to the logistics and supply chain process of a large organization. Unfortunately, the implementation has been slow in the Nigerian Maritime Administration and Safety Agency (NIMASA). Reports have shown that there is a need to re-engineer linkages between service systems within the growing organizations. From the perspective of an enterprise like NIMASA, only limited research has been conducted that has played an important role in intimating the organization towards the adoption of a cloud-based ERP system as well as the post-implementation measures. Most recent studies have been conducted only in the context of generic information system adoption. Information system research is not strong enough without considering the articulating system speed and performance of CERP. This study investigates the critical factors influencing the adoption of Cloud-based Enterprise Resource Planning (CERP) in the Nigerian Maritime Administration and Safety Agency with a focus on Maritime logistics and supply chain. A structured based questionnaire was administered to 130 senior maritime workers in the Nigerian Maritime industry to extract factors that hinder the adoption of information systems like cloud-based ERP. The quantitative data were analyzed based on the impact ranking to inform a proposed implementation model for a Cloud-based ERP in the organization. The research also highlights some important Critical Success Factors like technology-related factors, funding for technology innovation (Economic and financial factors), Policy related barriers, and how they influence development in the Maritime industry.
A Review of Risks for Bim Adoption in Malaysia Construction Industries: Multi Case Study
Authors: Ahlam B Q A , Rahim Z Abdul 
Published: March 2021

Abstract
In tandem with the global changes taking place oriented with industry 4.0, including digitization and automation, Malaysia also demands the innovation-led technological transformation. In the transition to digital technologies, industry 4.0 for the construction industry is bound for Building Information Modelling (BIM). The developments of BIM have posed major risk factors that might hinder construction companies for continuous change. BIM is still at an early stage in Malaysia, with that being said, little is known about its process and it is not yet clear what risk factors might hinder the early process of BIM adoption. This paper introduces the risk factors that might hinder the process towards BIM adoption; emphasis more on risk factors of each industry. Three construction industries in Malaysia were chosen to review the risk factors of each industry using purposive document analysis method. The risk in Malaysia construction industry 4.0 is divided into technical and non-technical factors. There are similar and different expectations of each construction industry toward BIM adoption and there are risks where organizations are still not fully aware of it. Each company has to decide its route and the most effective way to reach the destination. The outcomes of this article might help to support and guide Malaysia construction industries to pay major attention to such risks and plan ways to overcome
State of The Art on Development of Superhydrophobic Coatings for Corrosion in Marine Applications
Authors: Wy Y S , Johari N , Mazlan S A 
Published: March 2021

Abstract
Owing to the water-repellence and anti-sticking properties, superhydrophobic technology has become a burgeoning subject of research area in innumerable fields. A great deal of literature articles covering corrosion control applications has been published. Howbeit, specific review focusing on superhydrophobic approach to ameliorate durability performance of coatings for corrosion protection in marine applications is still lacking. This literature first introduces the basic principles of superhydrophobicity, followed by the discussion of established approaches to fabricate superhydrophobic coatings. Besides that, the recent progress of superhydrophobic coatings intended for marine applications are also discussed. In addition, the challenges and future perspectives of anticorrosion coating for marine applications are presented. As a matter of fact, corrosion in marine environment is undeniably complex due to the diversity of seawater chemistry and the existence of biological organisms living in the ocean. Hence, this review served as ‘food for thought’ on the development of superhydrophobic coating by merging the coatings’ main features including corrosion protection and fouling mitigation in order to improve its sustainability and durability performance in the marine environment.
Whirling frequencies of rotor systems using ANSYS APDL
Authors: Mohd Azman N H , Yusof Z , Rasid Z A , Hassan M Z , Yahaya H , Yakub F 
Published: March 2021

Abstract
Whirling is one important type of vibrations that may cause fatigue failure to a rotor system. The whirling natural frequencies of the system depend very much on the stiffness, damping, mass and constraints imposed to the system. In this study, a modal analysis for whirling type vibration has been conducted on rotor systems using finite element method software of ANSYS APDL to determine the whirling frequencies of the rotor systems. Two cases of rotor system have been considered: a simple shaft with rigid bearing and a disc-shaft system with rigid bearing. Through the second case, the work is validated by comparing the system whirling frequency with past work. Further, through the second case also, parametric studies were conducted to investigate the impact of variation of shaft diameter, bearing and disk parameters on the vibration characteristics of the rotor system. Campbell diagrams have been generated to provide the difference in whirling frequencies of the rotor systems with respect to spin speeds while providing the critical speeds of the rotor system. It was found that in the first case, the Campbell diagram generated followed the supposed theoretical form while the results in the second case agreed well with past results. The parametric studies conducted showed that the several modes of whirling natural frequency depended on the shaft diameter, location of the disc and the mass of the disc.
Progressive failure analysis of laminated composite plates
Authors: Mohd Sabee S S N , Yusof N , Rasid Z A , Yahaya H , Yakub F , Hassan M Z 
Published: March 2021

Abstract
Failure of laminated composite plates has been a crucial issue that numerous researches have been conducted on the matter. Several modes of failure of laminated composites include fibre failure in tension, matrix failure in tension, fibre failure in compression, matrix failure in compression and delamination. This paper analyses failures of the composites to determine the first ply failure load (FPL) and last ply failure load (LPL) using the progressive failure approach that combines the effect of several modes of failure. Finite element method (FEM) was used via the commercial software of ANSYS APDL where the laminated composite plates were first modelled. Validation of the analysis was firstly conducted through a simple stress and deflection analysis. Progressive analysis was then conducted as the composite is loaded with an incremental combined tensile and transverse loading. The Tsai-Wu failure and the maximum stress criteria have been used to detect the FPL. With the failure occurred in an element, the degradation of that element mechanical properties was applied. As the load was further increased, more elements will fail and be degraded until the LPL was reached. A parametric study was conducted on the effect of varying angles of orientation of the composite. The results showed that the FPL and the LPL of the composites due to the Tsai-Wu criterion and the maximum stress criterion were in good agreement. The progressive failure behaviour of laminated composite plates subjected to uniaxial load and combined uniaxial load and transverse load was successfully established.