bluuebunny/crossref_metadata_2025_split huggingface dataset:
Local entanglement and string order parameter in dimerized models
Authors: Bahovadinov Murod S , Gülseren Oğuz , Schnack Jürgen 
Published: September 2019

Abstract
In this letter, we propose an application of string order parameter (SOP), commonly used in quantum spin systems, to identify symmetry-protected topological phase (SPT) in fermionic systems in the example of the dimerized fermionic chain. As a generalized form of dimerized model, we consider a one-dimensional spin-1/2 XX model with alternating spin couplings. We employ Jordan–Wigner fermionization to map this model to the spinless Su–Schrieffer–Heeger fermionic model (SSH) with generalized hopping signs. We demonstrate a phase transition between a trivial insulating phase and the Haldane phase by the exact analytical evaluation of reconstructed SOPs which are represented as determinants of Toeplitz matrices with the given generating functions. To get more insight into the topological quantum phase transition (tQPT) and microscopic correlations, we study the pairwise concurrence as a local entanglement measure of the model. We show that the first derivative of the concurrence has a non-analytic behaviour in the vicinity of the tQPT, like in the second order trivial QPTs.
Spin current between the two different topological phases in the equilibrium system
Authors: Wei Fan , Hu Jinxin , Yu Sixia 
Published: September 2019

Abstract
In this paper, we analyze the equilibrium spin current in a two-dimensional electron gas with a Rashba spin–orbit coupling at zero bias. Silicene has been successfully synthesized on a two-dimensional honeycomb lattice, and has some unique features due to its buckled structure. By applying the electric and exchange fields, various phases can be realized, such as valley polarized metal (VPM) phase, quantum anomalous Hall state and quantum spin Hall (QSH) state. Both VPM and QSH exhibit metalliclike behavior, we put two different phases in an infinite zigzag nanoribbon, even the weak inhomogeneity of the Rashba medium leads to spin current, and introduce how to control the output polarized current by tuning the electric and exchange fields. Furthermore, we define the concept of bond spin current, and plot the spatial distribution of microscopic spin current. In particular, spin vortex appears when the injected energy is close to the Fermi level, where spin current changes most violently.
Ultrafast mode-locked fiber laser with Zirconium disulfide on D-shaped Fiber
Authors: Yap W. 
Published: September 2019

Abstract
It has come to the attention of the Editors of Chinese Physics B that the article entitled 'Ultrafast mode-locked fiber laser with zirconium disulfide on D-shaped fiber' should not have been accepted for publication because of its substantial replication of an article submitted to Infrared Physics & Technology. Consequently, this paper has been withdrawn from publication.
Comparative analysis of ANFO and emulsion application on overbreak and underbreak at blasting development activity in underground Deep Mill Level Zone (DMLZ) PT Freeport Indonesia
Authors: Widodo S , Anwar H , Syafitri N A 
Published: September 2019

Abstract
Underground Deep Mill Level Zone (DMLZ) mine PT Freeport Indonesia (PTFI) is still in development stage and currently has no production activities yet. In underground DMLZ mine, a trial of emulsion explosive has conducted since March 15th, 2017 where previously used was Ammonium Nitrate Fuel Oil (ANFO) explosive for tunnel blasting. This study purposes to analyse the results and impact of ANFO and emulsion explosive in order to know the advantages and disadvantages of each explosives. In this study, an overbreak and underbreak comparison evaluation was performed by ANFO explosives and emulsion in underground DMLZ mine tunnel blasting. Furthermore, processing data based on explosives specification data, explosives quantity, heading location and time that detonated, solid design and actual tunnel DMLZ of PT. Freeport Indonesia, also cross section data. After all the data were processed and analysed, it was concluded that the emulsion explosive was more effective for use in tunnel blasting. To optimize the effective blasting results it is necessary to redesign new drilling patterns and blasting geometry by used of radial crack method, so that they can be applied to DMLZ tunnels in the future.
Developing Agricultural Land Geospatial Information in Supporting Regional Food Resilience
Authors: Nurmiaty  , Baja Sumbangan , Arif Samsu , Ridwan Andi , Rahmad D. , Sukmawati  
Published: September 2019

Abstract
One of the major obstacles in increasing the agricultural production yields is the inappropriate management of land use due to the differences in land biophysical characteristics in each region. Therefore, it is necessary to have spatial-based land use management that is appropriate for handling agricultural land. This research aims at structuring geospatial information of agricultural land biophysical characteristics and agricultural land appropriateness (potential and limiter) for food plants development in Pangkep Regency. This research uses the up-to-date approach of multi-scale observation, so the problems becoming the restricting factors of productivity can immediately be overcome. The method used consists of 2 stages, namely stage 1, analysis of agricultural land (biophysical) climate and land characteristics through land survey, laboratory analysis, and land characteristic spatialization; stage 2, analysis of agricultural land appropriateness (potential and limiter) using land appropriateness method offuzzy set/FAO, satellite image information extraction, ground truth, and ground sampling. The results of the research are in the form of geospatial information on agricultural land biophysical characteristics and agricultural land appropriateness (potential and limiter) for food plants development in Pangkep Regency. With the information, decision makers will have more ease and they integrate into making policies for agricultural land use management in Pangkep Regency that will end up aiming to increase food production.
Using Geospatial Information Technology for Regional Assessment of Food Crop Land in South Sulawesi
Authors: Baja Sumbangan , Neswati Risma , Arif Samsu 
Published: September 2019

Abstract
Recently, geospatial information on land suitability and land availability for specific purposes has become a prerequisite for strategic planning in regional development. Although geospatial data on land resources and their uses have become more available and detailed, in some circumstances, their geographical representations for spatial decision making are often considerably intricate. Accordingly, it requires advanced geospatial methods and approaches that could deal with those complex phenomena in an effective manner. The principal aim of this paper is to utilize Geographic Information Systems (GIS) and Remote Sensing (RS) to assess food crop land suitability at a regional scale. We fully utilize integrated techniques of GIS and RS in mapping land areas of three regencies, namely Takalar and Jeneponto, where such regencies have to date become strategic areas for food crop development, especially maize. Our preliminary finding as show that although Jeneponto district has long been recognized as a very dry area (where some parts of the region have less than 1,000 mm annual rainfall), this area has a very large potential suitability for maize cultivation, followed by Takalar. Such analysis has also been confirmed by the results of our geospatial data analysis following ground visits and local government statistical data. The results of this study not only present the suitability of future development of food crop especially maize, but also depict spatially the distribution of land class fitness for a given crop in such three regions; and thus provide the basis for decision making in future land use management.
Estimation Mean by the Bayesian Approach on the Exponentially Weighted Moving Average Control Chart
Authors: Siruddin M , Herdiani E T , Thamrin S A 
Published: September 2019

Abstract
A control chart is one of the primary techniques of statistical quality control. Exponentially Weighted Moving Average (EWMA) control chart is one of the control charts used to detect a small shift in the mean process. In the quality control process, the control chart is often constructed by ignoring parameter uncertainty. This can affect the long-term performance of the control chart in a controlled or out-of-control state, so parameter estimation is necessary. The parameter estimation method used in this paper is the Bayesian approach. The Bayesian approach is used to develop an EWMA control chart in monitoring a process. The performance of the EWMA control chart with the Bayesian approach has been evaluated using Average Run Length (ARL). Based on the comparison of the ARL value from the EWMA control chart with the Bayesian approach and the Classical EWMA control chart, it shows that the EWMA control chart with the Bayesian approach is more sensitive in detecting the shift in the mean process.
Petrogenesis of Kalisonggo tertiary lava, Girimulyo Kulonprogo, Yogyakarta based on mineralogy and geochemical analysis
Authors: Aribowo Y , Ali R K , Najib A 
Published: September 2019

Abstract
The andesite lava that exposed in Kalisonggo, Girimulyo, Kulonprogo, Yogyakarta is the product of Kulonprogo Volcano activity. Kulonprogo Volcano is an ancient volcano that has three eruption centers. This study was conducted to determine the petrogenesis of Kalisonggo lava including sources, tectonic setting and other processes that controlled the formation of the lava. The methods used in this research are petrographic analysis (6 rock samples) and geochemical analysis (major oxides and trace elements) by XRF. Petrographic analysis shows that in general, all samples are composed by plagioclase, clinopyroxene, orthopyroxene, opaque mineral, and glass. Hornblende occured in three samples from the south area only and no hornblende found in the sample from north area. The rocks have porphyritic, ophitic, glomeroporphyritic texture, and some plagioclase zoning. The XRF geochemical analysis result show that the rocks composition are andesitic-basaltic andesite. From SiO2 vs K2O + Na2O diagrams and Co vs Th diagrams, the rocks is interpreted as product of Gadjah volcano eruption. This product characterized by calc-alkaline magma series. The magma affinity indicates that the magma generated in subduction zone or island arc.
The effectiveness of vacuum preloading on eliminate secondary settlement; case study in summarecon city bandung area’s development project
Authors: Wahyu A L , Mochtar I B 
Published: September 2019

Abstract
Summarecon City Bandung Area’s Development Project is used to use embankment preloading with Prefabricated Vertical Drain (PVD) to improve the soil, but due to weather problems, used another alternative by replacing embankment preloading to vacuum preloading. Vacuum preloading with PVD is only intended for accelerate primary settlement, while secondary settlement still exists. Secondary settlement in this project needs to be paid attention because according to the reality in the field, secondary settlement happened quite large because the soil mix with organic soil. Secondary settlement could cause differential settlement which can damage the infrastructure and make the infrastructure drop until lower than flood water level. So far, there has not been a study about how to eliminate secondary settlement in order to complete that settlement before the infrastructure is built, so that differential settlement does not happen. Therefore, a study about eliminate secondary settlement in order to be completed before the infrastructure is built is needed with remove it along with primary settlement. In this case, secondary settlement is going to be eliminated by adding additional load in the form of embankment preloading. Overall, this study can be a suggestion and consideration for the decision-making of Summarecon on selecting the soil improvement; embankment preloading or vacuum preloading.
Geomorphology study on the Bandar Lampung Capital City for recommendation of development area
Authors: Mulyasari Rahmi , Utama Hari Wiki , Haerudin Nandi 
Published: September 2019

Abstract
Bandar Lampung area is a capital of Lampung Province that located on the south of Lampung Province. It has highly populated urban area consisting of land and waters with several highlands and mountains lied in Bandar Lampung. Population density supported by high infrastructure development makes Bandar Lampung City become a city with rapid growth. Consequently, spatial planning concept by considering all aspects needed to support sustainable development in a city, one of them is geomorphology aspect. Geomorphology has an important role to give the information and overview on the existing landscape in an area. The aim of this paper is to know geomorphology characteristics of this area that could provide an information to land use, disaster mitigation, and references for infrastructure development area. Analysis of geomorphology aspect was employed in this study, which are morphology aspect (morphography and morphometry), morphogenetics aspect (morphostructure active, passive and dynamic), morphochronology aspect and also consider the morphoconservation aspect. Remote sensing is a method which is carried out to know characteristic of geomorphology aspect become a map. The geomorphologic map is resulted based on analysis of geomorphology aspect. This area could be divided to four geomophologic units, there are fluviatil unit, structural unit, volcanic unit, and denudational unit. In addition, based on analysis of geology and geomorphology, the area composed of two degree of geohazard, which are secure zone and dangerous zone. In addition, geomorphology map could be used to designed and development for recommendation area in Bandar Lampung.
High Efficiency Dye Sensitized Solar Cell from Tectona Grandis and red Crysanthemum Morifolium as a Sensitizer
Authors: Tahir Dahlang , Abidin Ruzaini H. , Gareso Paulus Lobo 
Published: September 2019

Abstract

Tectona Grandis leaves and red Crysanthemum Morifolium have been used as sensitizers for dye sensitized solar cell (DSSC) using organic solvents by ethanol, citric acid, and distilled water in respectively with the ratio of 5 : 1 : 4. TiO2 paste was spin-coated on top Indium Tin Oxide (ITO) conductive glass and calcinated at temperature of 450°C for 10 min. The chemical properties were analysis by using Fourier transform infrared spectroscopy (FTIR) indicated the presence of anthocyanin from Tectona Grandis leaves and red Crysanthemum Morifolium petal. The physical properties were analysis by using UV-Vis spectrophotometer was performed to measure the absorbance of dye solution in the visible spectrum range and X-Ray Diffractometer (XRD) was used to determine the structure of TiO2/ITO and Dye/TiO2/ITO. Among the three dyes studied, the mixed dye solution from Tectona Grandis leaves and red Crysanthemum Morifolium was shows the best photosensitization effects with the conversion efficiency is 0.834 %.
Characteristic of Coal Deposits in the East Kolaka, Southeast Sulawesi Province
Authors: Deniyatno  , Armid A , Harisma  , Anshari E , Hasan E S 
Published: September 2019

Abstract
Coal deposits in Southeast Sulawesi may not be large, one of the occurrence and deposit has been recorded in the Tawanga Village, East Kolaka Regency, Southeast Sulawesi Province. The study area is part of Southeast Arm of Sulawesi and the occurrence of coal is indicated from Meluhu Formation (TRm) which uncomformably overlying with schist of the Mekongga Complex (Pzm). In this study, field survey and proximate analysis of coal had been conducted to determine the distribution and quality of coal. Six coal samples from different area were subjected to the proximate analysis and the comparison of different properties including moisture content, volatile matter, fixed carbon, ash content and calorific values has been studied. The study is aimed to characterize of coal in the area through proximate analysis method. Field survey showed that the occurrence of coal as thin layers or lenses set in shale with thickness is vary from 5 to 20 cm. The analytical evaluation of properties showed the value of fixed carbon content 5.2 to 12.4%, the ash content 8.4 to 35.7%, the total moisture content 47.1 to 73.0% and volatile matter 7.0 to 10.7%. The analytical results suggest the existing of coal in the study area is classified as low rank calorie with the calorific value ranges between 1246.7 to 3644.6 cal/gr (adb).
Analysis of salt pond cluster in Arungkeke sub-district Jeneponto Regency
Authors: Sakka  , Baharuddin  , Samad W 
Published: September 2019

Abstract
Jeneponto Regency is one of the largest national salt production locations in South Sulawesi. One of them is located in Arungkeke Sub-district with a land area of 328.61 ha (21.62%), but salt pond activities in this area are still carried out traditionally, so that not all locations can produce and some produce less than 71 tons / ha with NaCl levels <90% and not meeting industry salt standards (NaCl> 97%). This research was conducted to analyse the area of salt ponds based on clusters on the similarities they have in managing salt ponds. The results showed that the total area mapped by 243.9 ha could be divided into 14 clusters / groups with a wide range of 10-30 ha / cluster. Each cluster is divided into bozem ponds, weeds and salt tables with a ratio of 5: 3: 2. The channel network system to be developed is divided into two primary channels, namely SPPA1, and SPPA2 and two secondary supply channels, namely SSPA1.1 and SSPA1.2. The filling of water into the ponds of each cluster can only be done using a pump with a water debit requirement ranging from 0.116 - 0.347 m3 / s. To achieve good salt quality, increasing the density value is carried out in stages, namely in bozem, hatchery and salt table are 4 - 11 °Be, 11-22 °Be and 22-30 °Be, respectively.
Numerical Simulation of Water Control Technology in Deep Water Gas Reservoir
Authors: Zhong LI , Yong-bin GUO , Meng Wen-bo , Zhang Chong , Jiang Dong-lei , Tang Xian-di 
Published: September 2019

Abstract
In recent years, large deep-water gas fields such as Yacheng and Lingshen have been discovered successively in deep-water exploration in the South China Sea, with huge reserves. However, bottom water is ubiquitous in deep-water gas fields, which seriously affects gas reservoir recovery. Therefore, it is beneficial to improve the development effect of gas reservoirs to clarify the water invasion mechanism and law of bottom water gas reservoirs. Based on the study of water invasion law of deep water gas reservoir, the development effect of deep water gas reservoir under different water control technology conditions is evaluated by numerical simulation method in this paper. It provides a strong basis for rational and effective development of deep-water gas reservoirs and water control and waterproofing technology.
Consideration and Discussion on Green Highway Construction in Urban Area
Authors: He Qinghua , Yue Weijie , Lu Hui , Chen Chao , Li Zhengkai , Wang Zhaoming 
Published: September 2019

Abstract
Green highway construction is the concrete action of the highway industry to continuously improve the development concept. It is the inheritance of green and mysterious low-carbon highway in the new period. Green highway is the use of energy saving, low-carbon and environmental protection technology in the new period. Urban roads are crisscrossed, pipelines such as gas, electricity and water conservancy are densely distributed. The sensitive points such as villages and hospitals are widely distributed, and land pressure is high. These complex characteristics make construction difficult. Therefore, it is of great significance to focus on the construction of the urban road green transportation technology demonstration project with the theme of “green construction and safety first” and build a green highway with urban characteristics.
Research on Intelligent Multiple Interchange Induction System of Huadu to Dongguan Highway
Authors: He Qinghua , Yue Weijie , Lu Hui , Lin Haiteng , Chen Chao , Li Zhengkai , Wang Zhaoming 
Published: September 2019

Abstract
Urban expressway is an important part of the urban traffic network, which is also the main artery of urban traffic system. The rationality of interchange has a direct impact on the functions of “rapid patency” and “safety comfort” of urban roads. This paper taking Taicheng multiple interchange as the research object, which from expressway Huadu to Dongguan, focuses on improving traffic efficiency, induction accuracy and safety. This research is carried out from making the lines and mark, making high-precision navigation map, and making guidance system to provide solutions for Taicheng interchange.
Research on Intelligent Control Positioning Detection System Based on Machine Vision
Authors: Miaona Chen 
Published: September 2019

Abstract
In recent years, China’s economic level and technology level have been significantly improved, so people have developed an intelligent control positioning detection system based on machine vision. The generation and application of this positioning system effectively improve the accuracy of positioning, and its stability is also very high. Therefore, the emergence of this system has met the current high-efficiency production requirements of the manufacturing industry and has a positive impact on the development of the manufacturing industry. In this paper, the intelligent control positioning detection system based on machine vision is deeply analyzed, and the author’s own opinions are presented for reference.
Optimization Selection of Bit and Application Research on PDC + Motor Combination Drilling Technique in the Desert Oilfield
Authors: Gang Yu , Kun Ning , Jinsong Tong , Xiangji Kong , feng Qian , Junbiao Liu , Huabei Zhang 
Published: September 2019

Abstract
The drilling speed has a lot to do with whether the selected bit type and formation type is matched. Choosing a reasonable drill bit type can achieve the goal of high speed and low cost drilling by improving drilling rate and reducing the occurrence of down hole trouble. On the basis of performance analysis of PDC bits, the linear relationship between rate of penetration and drilling footage is obtained. By means of the optimization of motor and parameters, the drilling parameters, such as weight on bit, torque, type of mud motor and operating temperature, are optimized by application in desert oilfield. It provides an effective reference for the rapid development of the same type of oilfield
Research on Construction Technology of Extended Arm Truss of Super High-rise Building Steel Structure
Authors: Zhang Zhe , Yang Qijian 
Published: September 2019

Abstract
As a special type of construction technology for super high-rise buildings, the steel structure outrigger truss construction technology can effectively improve the overall stability of buildings, taking into account the safety and economic characteristics. Based on the present situation of technology implementation, this paper first introduces the present situation of steel structure extension truss construction technology of super high-rise buildings, then explores the technical advantages and value of steel structure extension truss construction of super high-rise buildings, and puts forward the optimization strategy of steel structure extension truss construction technology of super high-rise buildings, hoping that it can effectively improve the construction application level and create conditions to promote the development of the industry.