bluuebunny/crossref_metadata_2025_split huggingface dataset:
Taming the snake in paradise: combining institutional design and leadership to enhance collaborative innovation
Authors: Torfing Jacob , Cristofoli Daniela , Gloor Peter A , Meijer Albert J , Trivellato Benedetta 
Published: July 2020

AbstractThe growing expectations to public services and the pervasiveness of wicked problems in times characterized by growing fiscal constraints call for the enhancement of public innovation, and new research suggests that multi-actor collaboration in networks and partnerships is superior to hierarchical and market-based strategies when it comes to spurring such innovation. Collaborative innovation seems ideal as it builds on diversity to generate innovative public value outcomes, but there is a catch since diversity may clash with the need for constructing a common ground that allows participating actors to agree on a joint and innovative solution. The challenge for collaborative innovation – taming the snake in paradise – is to nurture the diversity of views, ideas and forms of knowledge while still establishing a common ground for joint learning. While we know a great deal about the dynamics of the mutually supportive processes of collaboration, learning and innovation, we have yet to understand the role of institutional design and leadership in spurring collaborative innovation and dealing with this tension. Building on extant research, the article draws suitable cases from the Collaborative Governance Data Bank and uses Qualitative Comparative Analysis to explore how multiple constellations of institutional design and leadership spur collaborative innovation. The main finding is that, even though certain institutional design features reduce the need for certain leadership roles, the exercise of hands-on leadership is more important for securing collaborative innovation outcomes than hands-off institutional design.
Detecting quantum attacks: a machine learning based defense strategy for practical continuous-variable quantum key distribution
Authors: Mao Yiyu , Huang Wenti , Zhong Hai , Wang Yijun , Qin Hao , Guo Ying , Huang Duan 
Published: July 2020

Abstract
The practical security of a continuous-variable quantum key distribution (CVQKD) system is compromised by various attack strategies. The existing countermeasures against these attacks are to exploit different real-time monitoring modules to prevent different types of attacks, which significantly depend on the accuracy of the estimated excess noise and lack a universal defense method. In this paper, we propose a defense strategy for CVQKD systems to address these disadvantages and resist most of the known attack types. We investigate several features of the pulses that would be affected by different types of attacks, derive a feature vector based on these features as the input of an artificial neural network (ANN) model, and show the training and testing process of the ANN model for attack detection and classification. Simulation results show that the proposed scheme can effectively detect most of the known attacks at the cost of reducing a small part of secret keys and transmission distance. It establishes a universal attack detection model by simply monitoring several features of the pulses without knowing the exact type of attack in advance.
Aerodynamic performance of flexible flapping wings deformed by slack angle
Authors: Addo-Akoto Reynolds , Han Jong-Seob , Han Jae-Hung 
Published: July 2020

Abstract
Wing flexibility is unavoidable for flapping wing flyers to ensure a lightweight body and for higher payload allowances on board. It also effectively minimizes the inertia force from high-frequency wingbeat motion. However, related studies that attempt to clarify the essence of wing flexibility remain insufficient. Here, a parametric study of a flexible wing was conducted as part of the effort to build an aerodynamic model and analyze its aerodynamic performance. The quasi-steady modeling was adopted with experimentally determined translational forces. These forces were determined from 84 flexible wing cases while varying the angle of attack at the wing root α
r and the flexibility parameter, slack angle θ
S, with 19 additional rigid wing cases. This study found α
r for optimum lift generation to exceed 45° irrespective of θ
S. The coefficient curves were well-fitted with a cubed-sine function. The model was rigorously validated with various wing kinematics, giving a good estimation of the experimental results. The estimated error was less than 5%, 6%, and 8% for the lift, drag, and moment, respectively, considering fast to moderate wing kinematics. The study was extended to analyze the pure aerodynamic performance of the flexible wing. The most suitable wing for a flapping-wing micro-aerial vehicle wing design with a simple vein structure was found to be the 5° slack-angled wing. The inference from this study further shows that a small amount of deformation is needed to increase the lift, as observed in natural flyers. Thus, wing deformation could allow living flyers to undertake less pitching motion in order to reduce the mechanical power and increase the efficiency of their wings.
Positive deviance of Tanjung Puting National Park manager: case of Teluk Pulai Village
Authors: Prihatmaja H , Soedomo S , Sunkar A 
Published: July 2020

Abstract
Conflict in the national park can be resolved through the positive deviance of national park manager as shown by case of conflict between the Community of Teluk Pulai Village with the Tanjung Puting National Park (TNTP) and the decreased conflict intensity due to policy implementation of village exclusion from the TNTP areas. The objective is to obtain the facts behind the village exclusion processes.The research is using a qualitative approach with a case study strategy and game theory as a quantitative approach. Data collection is conducted through field observation and non-structural in-depth interviews with the informants which are determined through purposive, snowball, and judgmental methods. The literature review is conducted on the applicable regulations and related research. Data analysis conducted through critical discourse analysis compared to the research problem criterion, there are access, conflict, and positive deviance.The result shows facts lying the conflict situation between the Teluk Pulai Village and the TNTP, also the village exclusion from the TNTP areas in which influenced by the role of TNTP’s manager by using the discourse in which deviant positively. Using the discourse, the TNTP’s manager is utilizing the political process of Spatial Planning of Central Kalimantan Province, up to the issuance of Kepmenhut 529/2012. The discourse is deviant since the general practice of national park’s manager are asserting the paradigm of conservation development pointing out the aspects of protection/preservation and conservation. It is called as positive since it is successfully eliminating the conflict between Teluk Pulai Village and TNTP.
Adaptive Thermal Comfort of Elementary School Student (A Case study of the West Coastal Area of South Sulawesi)
Authors: Mulyadi R , Hamzah B , Ishak M T , Taufik Y R F 
Published: July 2020

Abstract
This research aims to study the adaptive thermal comfort in elementary school buildings in the west coastal area of South Sulawesi. It was conducted by field survey method to obtain personal data (clothing and metabolic rate) and environmental parameters such as air temperature and humidity, mean radiant temperature (MRT) and the airflow. During the measurements of environmental parameters, the students filled out questionnaires to find out their perceived comfort level by the Thermal Sensation Vote (TSV) and Thermal Comfort Vote (TCV). In addition, respondents are also asked to give an opinion on their desired thermal preference. The results of the environmental parameters measurements were used as references to calculate the Predicted Mean Vote (PMV), Operative Temperature (Top) and Predicted Percentage of Dissatisfied (PPD). The results show that the condition of the elementary school classrooms along the west coast of South Sulawesi are generally in high temperatures. However, most respondents still feel comfortable and able to adapt to these conditions.
Relationship between Regional Development Level and Accessibility Index in Makassar Coastal Area
Authors: Akil A , Yudono A , Wahyuni S , Ramadhani R , Kamaruddin I 
Published: July 2020

Abstract
Makassar population growth is also quite large, accompanied by the development of urban activities. The development was followed by city facilities and road. The connection between central and periphery area is a demand for community activities in an efficient, safe and comfortable manner. However, in general, the area has low-level accessibility, although the distance is relatively close. The study aims to examine the relationship between regional development level and accessibility level in Makassar coastal area. The accessibility index is analysed using the alpha index (α), while regional development level using LQ-analysis which focuses on residential, education, health, worship, and commercial. Furthermore the relationship between accessibility index and regional development using correlation analysis. The study results showed that the highest accessibility index was located in the city centre and the lowest in the urban periphery. It was also found that urban facilities tend to be higher in city centre than periphery direction. Low accessibility as a result of inequality in road infrastructure has implications for low performance of urban development. It shows that there is a connection between regional development and accessibility level. Therefore, it is recommended to policymakers to build access with high connectivity between the city centre and periphery area while paying attention to the availability of public open space.
Analysis of Sediment Distribution at the Intake Structure
Authors: Bakri B , Pallu S , Lopa R , Maricar F , Sumakin A , Maricar M F , Ridwan  
Published: July 2020

Abstract
As a Maritim country, most of Indonesia’s population lives near the coast or estuary. The main problem felt by the community is sanitation, clean water. The utilization of groundwater is very limited in number because of the influence of seawater intrusion. On the other hand, excess freshwater from upstream is very abundant, especially around the estuary. However, the morphological condition of the river downstream or bay has a significant depth and dimension, so it requires expensive exploitation costs in using the water. One of the solutions that have been done currently to use the water as raw water for clean water is by building free intake around the estuary. Along with river utilization, problems have been found regarding intake capacity and sediment entering the intake beyond the expectation. As a result, it gives an excessive burden on the water treatment plant. This research is an experimental study conducted in the laboratory that aims to determine the distribution of sediment in free intake building. The aims of the research end up to get the most effective intake placement elevation in terms of the capacity and the amount of sediment entering the intake. As a result of this study, it can cope with the high sedimentation rates in the free intake building. The results showed that the minimum discharge to 0.5 lt/second in the intake high (h1) was 0.04 gr, while in the intake high (h3) was 0.01 gr. For the maximum discharge to 0.7 l/sec in the intake (h1) was 1.7 gr while in the intake high (h3) was 0.02 gr. The amount of sediment that comes out through the intake will be directly proportional to the fluid flow in the channel with the same slope and elevation. However, the amount of sediment that comes out through the intake will inversely proportional to the intake elevation, discharge, and the same slope.
Prototype of Electrical Generator Device from Piezoelectric with Serial Configuration - Based on Mechanical Pressure
Authors: Yusran  , Madia A A , Zainuddin Z 
Published: July 2020

Abstract
This study discussed about of prototype of electrical generator device from piezoelectric with serial configuration - based on mechanical pressure. A prototype of a piezoelectric-based power plant that is able to convert mechanical energy (footing) or object load on piezoelectric into electrical energy was the aim of this research. The piezolectric generation system can be applied to serve limited loads and can be a support system for a distributed generation system. The method of research was device design and experimental testing. The experimental testing was carried out by varying pressures on piezoelectric to produce the desired output voltage. In testing, the pressure was generated by two different objects, a human footing and a object load with varying weight. The average voltage produced on human footing was 9.736 V for 60 kg body weight. The average voltage produced on object loads was 1.33 V for 5 kg object weight. This research has succeeded in making a prototype of a power plant using piezoelectric.
Potential of Heart Disease Detection Based on Iridology
Authors: Yohannes C , Nurtanio I , Halim K C 
Published: July 2020

Abstract
Every year the number of deaths caused by heart disease continues to increase. This is mostly caused by misdiagnosis or misinterpretation of the heart disease symptoms. Therefore, people need to be aware of this disease by maintaining a healthy lifestyle and conducting regular checks on the potential for heart disease. This early examination can be done using the iridology method, namely by analyzing the iris of the eye. This paper presents the implementation of computer vision and machine learning of iridology to detect the potential for heart disease. This system uses Canny edge detection and Principal Component Analysis (PCA) to extract features in the iris region of the eye, and Backpropagation Algorithm of Artificial Neural Networks to create the predictive model. There are 110 data used in this system, consisting of 55 eye images from subjects suffering from heart disease and 55 images of normal subjects. The data is divided into 88 data for training and 22 data for testing. The proposed system produced accuracy up to 95.45% for the test data using the sigma 0.3 for canny edge detection, 50 principal components, 50 hidden neurons, and 0.01 for the error limits.
Implementation of Clustering and Similarity Analysis for Detecting Content Similarity in Student Final Projects
Authors: Ilham A A , Bustamin A , Aswad I , Armin F 
Published: July 2020

Abstract
To finish study, students are requested to submit final projects. In some universities, the final projects are not necessary to be submitted for publication. The final project reports are stored in a local database. As the number of final projects is growing in the local database, similar contents may exist among the documents. The commercial tools cannot be used to detect the content similarity since the documents are not published. This paper proposed a system to detect content similarity in documents that are stored in a local database. Considering the number of stored documents, this similar content detection system implements two step processes. First, clustering documents to find most related documents. Second, finding content similarity among the selected documents. The experiment results show that the system is successfully clustering documents and detecting content similarity by implementing TF-IDF and Cosine Similarity algorithms. This system is limited to proceed documents that are written in Bahasa.
Performance of Routing Protocol OLSR and BATMAN in Multi-hop and Mesh Ad Hoc Network on Raspberry Pi
Authors: Wardi  , Dewiani  , Baharuddin M , Panggalo S , Gufran M F B 
Published: July 2020

Abstract
Ad hoc network is a network where each node can act as a terminal and also as a router. Ad hoc technology does not require infrastructure that controls communication systems centrally. Therefore, each node on the ad hoc network can manage itself. This study aims to design nodes that can be used for communication on wireless ad hoc networks then compare the networks performance on OLSR and BATMAN routing protocols. There are four performance parameters used, namely Throughput, Round Trip Delay (RTD), Packet Delivery Ratio (PDR), and Convergence Time. The topology used includes P2P communication and multi-hop communication. Network performance testing is done both for P2P and multi-hop communication on MESH networks. Convergence Time Testing is done only for multi-hop communication to find out the time needed by the protocol to repair the path when a path fail occurs. The test results show that OLSR gives a better average value of throughput compared to BATMAN. Whereas RTD shows that the BATMAN routing protocol is better compared to OLSR. Both protocols, OLSR and BATMAN, successfully received all data packets sent by the source node on P2P communications. Failure to send data packets occurs in multi-hop communication as indicated by a PDR value of 98% for the OLSR protocol and 95% for the BATMAN protocol.
Determination of Geochemical Correlation of Cu, Pb, Zn in Stream Sediment Samples in Barru Area, South Sulawesi
Authors: Tonggiroh A , Kaharuddin  , Irfan U R , Akbar A 
Published: July 2020

Abstract
The Barru area is known as the rock basement location in Sulawesi Island. The disclosure of ultramafic rock, metamorphic rock, and various sedimentary rock formations in the field and outcrops of unmapping intrusive rocks on a regional scale are certainly very interesting to be used as a media experiment in statistical methods in exploration of mineral resources. This is quite reasonable because among these rock formations are revealed intrusion of dacite and diorite rocks which are alterated and deposited as sulfides. The research gradually combines the pearson hybrid correlation geochemical stream sediment data and intrusive rocks on the relationship between SiO2, TiO2, Al2O3, Fe2O3, MnO, MgO, CaO, Na2O, K2O, P2O5, and Cr2O3 variables which are illustrated by multidimensional spatial correspondence analysis and anomalous sources based on Cr, Cu, Fe, Mn, Ni, Zn, As, Mo, Co, Sb, Cd, and Pb variables. The results showed that the application of the hybrid statistical analysis method was effective enough to identify elemental variables in identifying sulfide deposits and the characteristics of anomalies were quite different from diorite and dacite due to magmatic hydrothermal and tectonic activity.
Extraction of Nickel and Cobalt from Sulawesi Limonite Ore in Nitric Acid Solution at Atmospheric Pressure
Authors: Sufriadin  , Widodo S , Nur I , Ilyas A , Ashari M Y 
Published: July 2020

Abstract
Characterization and leaching study of a limonitic laterite ore from Sulawesi has been undertaken in order to find out mineralogical nature and Ni and Co concentration along with dissolution behavior during leaching process in nitric acid. Extraction rates of Ni and Co in different acid concentration and reaction time were also assessed. Mineralogical identification was conducted using optical microscopy and X-ray diffraction (XRD) techniques; whereas Ni and Co content was determined by means of atomic absorption spectrometry (AAS). Results of analyses show that minerals found in lateritic nickel ore studied were dominated by goethite with less quartz, talc, and trace spinel. Goethite was found to be high dissolution rate in nitric acid whereas quartz, talc and spinel were not dissolved during the leaching process. The highest extraction rates of Ni and Co with different acid concentrations at 1 hour leaching time were 13.22% and 24.17% respectively; whereas the maximum Ni and Co extraction rates under 2 molar nitric acid with different leaching times were obtained at 90 minutes with recovery of 24.17% and 56.53% respectively.
Fatigue Strength Improvement of Low Carbon Steel through Carburizing Process with Coconut Shell Charcoal
Authors: Syahid M , Hayat A , Arief S , Rudi  
Published: July 2020

Abstract
The fatigue strength of low carbon steel is a limitation that is often considered in machine construction, especially in rotating component parts. Low carbon steel has special properties that are soft, good welding and good machining, as well as relatively inexpensive prices but have low fatigue strength. For this reason, in this study, a carburizing process was carried out with the media of coconut shell charcoal as a source of carbon and shell powder as a catalyst. The addition of carbon using the carburizing method is relatively easy and does not require a large cost because the materials used are abundant in nature. The carburization process was carried out at 950°C for 4 hours. Furthermore, mechanical properties were tested with hardness, tensile testing and fatigue testing. The carburization process with charcoal media is expected to increase hardness, tensile strength and fatigue strength. Fatigue testing is carried out by the reverse bending method with a load varying 70%, 60%, 50% and 45% of the tensile strength of the material. In addition, microstructure examination and fault surface observation are also carried out to analyze the phenomenon of changes in material structure due to carburization. The hardness value of ST37 steel before carburizing ie 118 HRB increased to 127 HRB after undergoing carburizing treatment. Tensile test results also experienced an increase in which the initial tensile strength value of ST37 steel by 356.66 MPa increased to 541.15 MPa after the carburizing process. Likewise in fatigue testing, the fatigue limit has increased significantly, where the ST37 steel fatigue limit before the carburizing pack is at a stress level of 161 MPa. After experiencing the carburizing pack process the ST37 steel fatigue limits are at a voltage level of 232 MPa.
Improvement of Production Scheduling Performance using Simulated Annealing Algorithm
Authors: Mangngenre S , Syamsul N , Asmal S , Marco I P , Syamsul N I , Indah A B R 
Published: July 2020

Abstract
Production scheduling aims to minimize processing time, waiting time, and inventory levels, as well as efficient use of facilities, labor, and also equipment. In producing these products there is usually ineffectiveness in the scheduling process, such as sorting jobs that are not optimal so that the production requires a long time to produce products in large quantities. Therefore improving performance in order to increase productivity must be carried out continuously considering tremendously strict competition in the industry and manufacturing sector. This study is aimed to minimize the makespan value by scheduling the job sequence optimally. In this study, simulated Annealing Algorithm is used as one of the algorithms for generic optimization that is then compared to the algorithm used by companies. Based on the data processing, the maximal iteration has been reached with 2 iterations. The last iteration is selected which has the smallest makespan value, namely J2-J4-J3-J1 schedule with makespan value of 18,811.2 minutes. The makespan value obtain by simulated annealing algorithm is considered 9.03% more efficient compared to the companies method.
The Performance of Clay Furnace with Variation in the Diameters of the Briquette Burning Chamber
Authors: Djafar Z , Amaliyah N , Suluh S , Isra M , Piarah W H 
Published: July 2020

Abstract
Biomass fuel is an alternative energy source used in the form of briquettes using clay stoves. Utilization of clay as a briquette stove often results are not satisfactory as is the use of other fuel stoves, this is because the amount of air in the furnace burning chamber has not been determined and focused properly, so the purpose of this study is to determine the thermal efficiency of the furnace at variations in the diameter of the aluminum sleeve in the furnace burning chamber. The method used is to test 5 variations in diameter of the furnace burning chamber (cylinder). The results showed the best thermal efficiency was obtained at 52.87% at 180 mm slab diameter, boiling time at 9 minutes, with a heat loss of only 2.02 kW.