bluuebunny/crossref_metadata_2025_split huggingface dataset:
On Location Privacy Protection Algorithm Based on Edge Computing and Caching
Authors: Xu Xiaobei , Song Huaju , Zhang Kai , Chen Liwen , Qian Yuwen 
Published: December 2021

Abstract
To resolve the communication overhead problem of anonymous users, we propose a location privacy protection method based on the cache technology. In particular, we first place the cache center on edge server nodes to reduce interaction between servers and users. In this way, the risk of privacy leaks can be reduced. Furthermore, to improve the caching hit rate, a prediction system based on Markov chain is designed to protect the trajectory privacy of mobile users. Simulations show that the algorithm can protect the privacy of users and reduce the transmission delay.
Application of Fuzzy Control Technology in Aerobic Compost Heat Recovery Device
Authors: Guo Changbao 
Published: December 2021

Abstract
The technology of aerobic composting of organic solid wastes has been mature, but the technology of energy recovery and utilization generated by aerobic composting is backward. This paper investigates the status quo of organic solid waste energy conversion and fuzzy control technology. Based on reality, the principle of energy recovery of aerobic composting technology is introduced, the characteristics and advantages of fuzzy control technology are analyzed, and the design of fuzzy control technology for heat recovery device of aerobic composting has improved the utilization rate of energy recovery of aerobic composting. Practice has proved that the introduction of intelligent control technology such as fuzzy control into the control technology of biomass energy recovery is an inevitable trend in the development of new energy field.
A Remote Sensing Image Segmentation Method Based on Fusion Mechanism
Authors: Zhu Shuangling , Mujiang Guli Nazi·Aili , Jumahong Huxidan , Maiti Pazi Laiti·Nuer 
Published: December 2021

AbstractA U-Net convolutional network structure is fully capable of completing the end-to-end training with extremely little data, and can achieve better results. When the convolutional network has a short link between a near input layer and a near output layer, it can implement training in a deeper, more accurate and effective way. This paper mainly proposes a high-resolution remote sensing image change detection algorithm based on dense convolutional channel attention mechanism. The detection algorithm uses U-Net network module as the basic network to extract features, combines Dense-Net dense module to enhance U-Net, and introduces dense convolution channel attention mechanism into the basic convolution unit to highlight important features, thus completing semantic segmentation of dense convolutional remote sensing images. Simulation results have verified the effectiveness and robustness of this study.
Design of Personalized Recommendation Algorithms based on Big Data Framework
Authors: Liu Fang 
Published: December 2021

Abstract
The issue of information overload has become increasingly prominent since there are various kinds of data generated daily. A good recommendation systems can better deal with such problems. However, traditional recommendation systems for a single machine are suffering from the computing bottleneck in the environment of massive data. An individual recommendation algorithm is unable to gratify desiring users. To tackle this problem, we designed and implemented three kinds of recommendation algorithms based on big data framework in this paper. Besides, we improved the traditional recommendation algorithms leveraging the prevailing big data processing technologies. Finally, we evaluated the efficiency of the algorithm through recall rate, precision rate and coverage. Experiments show that the hybrid model-based recommendation algorithms which can be applied to the bulk data environment are better than the single recommendation algorithms.
Analysis of the electrostatic field distribution in the hemispherical internal cell of radon monitors to estimate the collection efficiency of Po-218
Authors: Fan Z. , Xie L. , Mo Y. , Lin F. , Hu T. , Yuan H. , Tan Y. 
Published: December 2021

Abstract
The collection efficiency of the hemispherical internal cell of radon monitors depends on many factors, with the distribution of the electric field and the relative humidity of the air being particularly important. COMSOL is used to simulate an internal cell with a plastic upper surface. Simulation results show a relatively uniform gradient of the electric field. Assuming that the electric field felt by the positively charged Po-218 ions in the internal cell is a linear function of its radial coordinate, a mathematical model of the collection efficiency is proposed. From this model, we obtained the following: 1) under the same neutralization rate and potential, the electric field gradient has little effect on the collection efficiency; 2) under the same neutralization rate, the collection efficiency increases with the potential on the cell wall. If the neutralization rate is small, then the potential value for the maximum collection efficiency is also small. At a relative humidity of 6%–10%, the collection efficiency saturates for values of the electric potential on the cell wall larger than 5 kV; 3) under the same potential, a large neutralization rate corresponds to reduced collection efficiency. At high potential, the collection efficiency is relatively less affected by the neutralization rate. Higher collection efficiency can be achieved under high potential and low humidity conditions. This study provides a theoretical foundation to design the internal cell of radon monitor for improving the collection efficiency of Po-218.
On the optimality of optical pumping for a closed Λ-system with large decay rates of the intermediate excited state
Authors: Stefanatos Dionisis , Paspalakis Emmanuel 
Published: December 2021

Abstract
We use optimal control theory to show that for a closed Λ-system where the excited intermediate level decays to the lower levels with a common large rate, the optimal scheme for population transfer between the lower levels is actually optical pumping. In order to obtain this result we exploit the large decay rate to eliminate adiabatically the weakly coupled excited state, then perform a transformation to the basis comprised of the dark and bright states, and finally apply optimal control to this transformed system. Subsequently, we confirm the optimality of the optical pumping scheme for the original closed Λ-system using numerical optimal control. We also demonstrate numerically that optical pumping remains optimal when the decay rate to the target state is larger than that to the initial state or the two rates are not very different from each other. The present work is expected to find application in various tasks of quantum information processing, where such systems are encountered.
Sustainability evaluation of the solid waste management system in Makassar City
Authors: Azis A C B , Munir A , Zubair H 
Published: December 2021

Abstract
The many impacts of improper solid waste management have made every region run a solid waste management system (SWMS) in a sustainable manner. It is necessary to evaluate it using the appropriate indicators to assess the sustainability of a SWMS. This study uses a sustainability indicator consisting of 27 indicators divided into six groups, which are suitable for assessing the sustainability of SWMS. This study found that the SWMS condition in Makassar City was still far from being sustainable. The results found that SWMS in Makassar City scored 58% in the general group, 95% in the collection and sorting group, 57% in the recycling group, 20% in the composting group, 20% in the energy recovery group, and 24% in the landfill group.
The Utilization of Land Surface Temperature Information as an Input for Coastal City
Authors: Ardiyansyah A , Munir A , Gabric A 
Published: December 2021

Abstract
Numerous studies have shown that there is a positive correlation between the increase of urban built-up areas with elevated Surface Urban Heat Island (UHI) temperature. It can be considered that SUHI is a by-product of urbanisation. The study found that SUHI in Makassar City is seasonal dependent. High surface temperature tends to occur in the dry season within the urban centre, expanding to the South-Eastern. Furthermore, by combining land surface temperature and Local Climate Zone (LCZ) classification scheme, 16 out of 17 local climate zones were identified, excluding LCZ 7 (light built) within the observation year. In detailed, the combination of LCZ 3 class (compact low rise) and LCZ 10 class (industrial), occupied more than 80 % of the total built-up category with a surface temperature range of 11° C and 16° C respectively. Furthermore, the result indicates a homogenous surface temperature within LCZ 3 with a lower SD of 1.40° C compared to LCZ 10 of 1.95° C. Also, the study explored the correlation of various urban and non-urban indices using artificial neural network. Based on the model used, the indices showed poor correlation with LCZ 3 but adversely correlates to LCZ 10. A final loss value of 0.222 in LCZ 10 was obtained. In contrast, LCZ 3 resulted in high final loss value of 146.554. The result indicated that there are other variables which should be considered in exploring SUHI correlation within LCZ 3 (compact low rise) in Makassar City. In contrast, LCZ 10 (industrial) correlate positively with three urban indices, consisting of NDBI (43.94), BI (37.79), and NDBal (34.77). In brief, the result indicated that SUHI phenomenon in LCZ 3 was poorly represented by the model, whereas the level of city development can be predicted better using LCZ 10 (industrial) areas.
Stability analysis of two predators and one prey population model with harvesting in fisheries management
Authors: Didiharyono D , Toaha S , Kusuma J , Kasbawati  
Published: December 2021

Abstract
The discussion is focussed in the interaction between two predators and one prey population model in fishery management. Mathematically model is built by involving harvesting with constant efforts in the two predators and one prey populations. The positive equilibrium point of the model is analyzed via linearization and Routh-Hurwitz stability criteria. From the analysis, there exists a certain condition that makes the positive equilibrium point is asymptotically stable. The stable equilibrium point is then related to the maximum profit problem. With suitable value of harvesting efforts, the maximum profit is reached and the predator and prey populations remain stable. Finally, a numerical simulation is carried out to find out how much the maximum profit is obtained and to visualize how the trajectories of predator and prey tend to the stable equilibrium point.
Resilience Level of Highland and Smallholder Farmers in Developing Various Coping-Based Agroforestry in the Upstream Minraleng Sub-Watershed, Maros District
Authors: Dassir M , Samuel AP , Usman A , Nadirah S 
Published: December 2021

Abstract
Farmers’ households in upstream watersheds in Indonesia experience crop failure in their business cultivation as a result of climate change. The aim of this study, knowing the level of farmer resilience in various agroforestry systems of mixed gardens – talun developed in various agroforestry systems of mixed gardens – talun developed on the highlands in the upstream Minraleng sub-watershed. Data collection was carried out through observation and interviews with farmer household respondents. The results showed that farmer households developed an intercropping agroforestry system of teak and corn in the first phase (1-4 years) and mixed plantations of bananas, cacao and papaya in the second phase (4-15 years), and continued with mixed plantations dominated by teak, have a higher adaptive capacity and levels of resilience to climate change. This is because it has more diversity of plants and a variety of livelihoods, and has the power of mutual association between plants in dealing with drought.
Analysis on the value of stiffness of the dual joint straightness notch joint of beams due to cyclic lateral load
Authors: Nur M R , Parung H , Amiruddin A A 
Published: December 2021

Abstract
Precast concrete is an answer to the demands of building structures that save time, but cannot be used widely because of the reliability of the connection, especially during an earthquake, the desired earthquake-resistant building structure must have sufficient strength and rigidity. Stiffness is one of the factors that determine the response of a structure to earthquake loads. When connected with earthquake loads, a structure must have sufficient rigidity so that its movement during an earthquake can be limited. This study aims to determine and analyze the stiffness in the double columns straight joint beam notches due to lateral cyclic load. By dividing 3 (three) types of test specimens, namely Monolithic column Beam, Type 1 Column Joint (SBK), and Type 2 Column Beam Joint (SBK). The connection used is a double straight notch and using the grouting method. Testing and analysis using the Displacement Control Method with the European Convention for Constructional Steelwork (ECCS) 1986 standards. The results showed the monolith column Column (BK) specimens have a greater stiffness value compared to SBK 1 specimens and SBK 2 specimens.
Land suitability analysis for urban development using multihazard map in mamuju district, West Sulawesi province, Indonesia
Authors: Anastasia S , Alimuddin I , Arifin F 
Published: December 2021

Abstract
In urban development, land suitability assessment is very important to be considered by urban planners and policymakers for designing urban spatial planning. Assessment of the suitability of urban planning using a multi-hazard map is made to provide an overview of potential natural hazards that pose a threat to regional development so that the government can avoid urban development in areas prone to natural hazards or implementing urban development based on disaster mitigation. The research area is Mamuju Regency which is the capital city of West Sulawesi province which is an area that has frequently suffered damages due to floods, landslides, and earthquakes. The main scope of this research is to synthesize natural hazard maps in one multi-hazard map and thus identify suitable areas for urban development using the Analytical Hierarchy Process (AHP) method and utilize Geographical Information Systems (GIS). The results showed that the Mamuju area was mostly at moderate to high suitability.
Biomarker Characterization of Oil Seepages in Tomori Basin, Central Sulawesi, Indonesia
Authors: Burhanuddin M S , Jaya A , Maulana A 
Published: December 2021

Abstract
Tomori Basin is located close to the Banggai Basin which has several productive oil fields. Further investigation of the hydrocarbon potential in Tomori Basin is an important issue as potential hydrocarbon resources are indicated by the discovery of several oil seepages in the area. This study identified Tomori Basin oil seepage characteristics using a biomarker analysis approach. The Wosu and Kolo Areas were the main objectives of this study. Oil seepage characteristics were determined using Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS) methods to generate biomarker data which could be analysed to identify organic matter origin, oxic and anoxic conditions, source facies, or depositional environment. Based on the GC analysis of is oprenoids, the Pristane C19/Phytane C20 ratio (Pr/Ph) of Wosu Oil was 0.75, indicating anoxic conditions typical of a hypersaline environment. Kolo Oil had a Pr/Ph ratio of 3.37 indicative of terrestrial organic input under oxic conditions. A cross plot between Pristane/nC17 and Pr/Ph ratios indicates that Wosu Oil derives from a highly anoxic environment with algae/bacterial organic matter input whereas Kolo Oil derives from a suboxic-oxic environment dominated by terrestrial organic matter input. Trycyclic terpene analysis from C19 to C25 shows Wosu Oil seepages tend to originate from an environment of mixed terrestrial and marine organic matter (transitional environment). Overall, biomarker characteristics indicate that Wosu Oil originated from organic matter in a hypersaline and anoxic environment, whereas Kolo Oil originated from terrestrial matter in a suboxic – oxic environment.
Role of bedrock serpentinization on the development of nickel laterite deposit in Sorowako, Sulawesi, Indonesia
Authors: Irfan U R , Maulana A. , Muhammad F 
Published: December 2021

Abstract
The objective of this research is to analyze the role of bedrock serpentinization on the development of Ni-Laterite deposits in Sorowako, Sulawesi Island, Indonesia. Samples were obtained from coring data in three areas, namely the West Block, East Block, and Petea, which are subject to mineralogical and geochemical analyses. Petrography of the bedrocks was conducted to analyze the mineral composition, texture, and serpentinization degree, and later correlated with the distribution of geochemical elements from X-ray fluorescence method in each laterite zone. The bedrock in the West Block is dunite which consists of predominantly olivine with low degree serpentinization. The bedrock in the East Blocks and Petea consists of peridotite in the form of lherzolite and harzburgite which have been moderate to highly serpentinized. The distribution of elements in each block shows that MgO, SiO2, and Ca elements significantly decrease towards the upper laterite profile while Fe, Al, and Cr are enriched in the limonite zone and Ni, Mn, and Co are significantly enriched in the saprolite zone. Ni, Fe, SiO2, Cr, MgO, and Mn in the West Block are relatively higher than the East Block and Petea. This study shows that Ni content is relatively higher in West Block compare to East Block and Petea in averages of 1.7%, 1.53%, and 1.3%, respectively. Olivine-rich bedrock and a low degree of serpentinization resulted in high-Ni concentration in the laterite profile, particularly in the saprolite layer. This means that bedrock characteristics and degree of serpentinization were responsible for the development of nickel.
Provisions for seismic detailing of column-beam connections according to SNI 2847:2019
Authors: Tumengkol H , Irmawaty R , Parung dan H , Amiruddin A 
Published: December 2021

Abstract
This research discusses seismic detailing for column-beam connections based on the special moment-hoe frame system (SPRMK) stipulated in the concrete regulations of SNI 2847:2019. Exterior-type column-beam connections with beam sizes of 200 mm × 300 mm and column sizes of 300 mm × 300 mm. The beam span is 1450 mm and the column height is 2850 mm. The reinforcement used in the beam diameter D13 as much as 6 pieces with a barge diameter of 8 mm. In the column, the main reinforcement diameter is D16 as much as 8 pieces with a barge reinforcement diameter of 8 mm with a distance of 75 mm. The detailing provisions are based on SNI 2847:2019 specifically in article 18.6, article 18.7, and article 18.8. Based on this provision obtained for detailing the connection of the column including blocks, columns, and joints meet the requirements specified in SNI 2847:2019.
Geology and hydrothermal alteration of Tambulun Cu-Au skarn prospect in Sulit Air area, Solok district, West Sumatra province, Indonesia
Authors: Afrilita  , Idrus A , Warmada I W 
Published: December 2021

Abstract
Study area is located at Tambulun copper-gold skarn prospect and its vicinity in Sulit Air area, Solok district, West Sumatra, Indonesia. The prospect has been known for a long time, however, detailed study on alteration and ore mineralization characteristics is not done yet. This study, therefore, is dealing with geological framework and characteritics of mineralogy, and geochemistry of the skarn prospect. Surface geological and alteration mapping as well as various laboratory analyses including petrography, ore microscopy, FA-AAS and ICP-MS of selected samples taken were performed. Skarn alteration and mineralization mostly occurs along the contact between Triassic crytalline limestone of Tuhur Formation and Jurassic granodiorite of Sulit Air granitoid suite. Ore mineralization is structurally controlled by WNW-ESE dextral slip-fault and NE-SW, N-S sinistral slip faults. Skarn alteration is zoned upon intrusions from proximal to distal consisting of garnet-pyroxene, pyroxene-garnet and chlorite-epidote zones. Silicified (quartz-clinopyroxene) alteration is also locally observed. Copper bearing sulfides such as bornite and chalcopyrite as well as supergene products such as chalcocite, covellite, chrysocolla, azurite and malachite are intimately associated with proximal garnet-pyroxene zone. Ore mineralization shows elevated grades of 20.9% Cu, 8.02 g/t Au and 573 g/t Ag, respectively, and they show a positive correlation. Those preliminary data exhibit that the skarn prospect seems to be promising to be followed-up for the next-step systematic exploration.
Analysis of the human development index to the development of the province of west Sulawesi
Authors: Ansyar M. H. , Padjung R. , Salam M. 
Published: December 2021

Abstract
Development success is measured by several parameters, one of which is the human development index. Humans have a role as a factor of production which is very important in the development of the region. This study aims to analyze which components make the human development index in the province of West Sulawesi low, and how the government’s strategies and priorities in improving HDI to support regional development and development. The analytical method used is multiple linear regression with SPSS software. The results of this study indicate that health and education have a significant positive effect on the development of the province of West Sulawesi while the economic component does not affect the human development index.
Dynamic Strategy and Contingency Power of SMEs Fish Processing Units In Achieving Sustainability Levels (Case Study: SMEs of Boneless Milkfish Processing Units in Pinrang Regency, Indonesia)
Authors: Karim M , Salman D , Genisa J , Rahmadanih  
Published: December 2021

AbstractIncreased competition has demanded the adaptation of SMEs to environmental changes and challenges for the success of companies in Indonesia. The purpose of this study is to analyze the strategy and contingency power of SMEs of fish processing units in reaching the level of sustainability. The object of the research is the SMEs of fish processing units in Pinrang Regency, South Sulawesi. This type of research is qualitative, which is descriptive by using case study techniques. Data collection techniques through field observations, in-depth interviews, and related documents. The results of this study indicate that the sustainability level of SMEs of the boneless milkfish processing unit in Pinrang Regency is proactive towards the continuity of production, continuity of sales, and continuity of raw material procurement. The sustainability of SMEs of fish processing units is shown by its ability to surf in chaotic dynamics. SMEs of fish processing units which have a high level of sustainability has been able to build an input process-output system dynamically so that it has contingency power and appropriate strategies in dealing with environmental dynamics. The contributing factor to the unsustainability of SMEs of fish processing units is the low ability to; build systems to be able to establish contingencies with the external environment. To improve and maintain its level of sustainability, the SMEs of fish processing units are improving the input-process-output system dynamically, optimizing contingency power with the task environment as well as with the political, economic, social, cultural, technological and natural environment.