bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of Cement Types on Concrete Properties of Double-Block Ballastless Track Bed
Authors: Yu Chaoyang
Published: September 2022

Taking double-block ballastless track bed concrete as the object, the influences of low-heat Portland cement (P·LH) and normal Portland cement (P·O) on mechanical properties, adiabatic temperature rise, dry-shrinkage and cracking sensitivity of track bed concrete are studied. The results show that, the track bed concrete prepared with two types of cement can meet the design requirements of C40 concrete. It is also noticed that the strength development of the two is different. That is, the early strength development of track bed concrete with P·LH is lower and the lately strength development is slightly higher than that of concrete with P·O, the 3d and 56d compressive strength of track bed concrete with P·LH is 41% and 9% lower than that of the latter, and 5% higher than that of the latter at age 90d. P·LH can reduces the adiabatic temperature rise of track bed concrete, the 1d, 3d and 7d adiabatic temperature rise of track bed concrete with P·LH is 34%, 24% and 20% lower than that of concrete with P·O, respectively. P·LH can reduce the dry-shrinkage of track bed concrete significantly, the 1d and 3d dry-shrinkage value is 70% and 30% lower than that of concrete with P·O, respectively, and even at shrinkage development stable age with 180d, the dry-shrinkage of former is also slightly lower than the latter. Cracking sensitivity evaluated by the concrete ring test shows that, the cracking sensitivity of track bed concrete with P·LH is significantly decrease and no cracking occurred within 28d, but the concrete with P·O was cracked at age 10d.
Analysis of the Effect of the Cement Mortar Admixture on the Fatigue Resistance of the Semi-Flexible Pavement
Authors: Liang Xiayi , Xie Binglei
Published: September 2022

The internal structure of semi-flexible pavement (SFP) is prone to fatigue damage, which affects its service life. The cement mortar admixture has a crucial influence on the fatigue resistance of SFP. In order to explore and study the fatigue resistance performance of SFP, Waterborne Epoxy Resin, emulsified asphalt and Carboxyl Latex were selected as cement mortar admixtures to prepare special cement mortar, and the effect of admixtures on the fatigue resistance of SFP was evaluated by indirect tensile fatigue test. The tests show that Waterborne Epoxy Resin undermines the fatigue resistance of SFP, while emulsified asphalt and Carboxyl Latex can improve it.
Influence of Surfactants on Microstructure and Properties of MAO Coated on Aluminum Alloy in Marine Construction
Authors: Shen Yan , Wang Hongxing , Chu Chenglin , Xie Yixin , Qu Fang , Jia Binbin
Published: September 2022

The ceramic oxide coatings on aluminum alloys for marine construction were formed through micro-arc oxidation (MAO) process with CTAB and SDBS surfactants in the original electrolyte solution. The composition, structure and some properties such as tribological behaviour and corrosion of alumina coatings were studied with different SDBS concentration varying from 0 to 0.2g/L (0,0.05,0.1,0.2g/L) in the electrolyte. The results show that the concentration of SDBS surfactant greatly influences the properties of MAO coating. The alumina coating surface becomes denser and thicker by adding SDBS surfactant in the electrolyte. Besides, the optimum concentration of the SDBS surfactant in the electrolyte to achieve the ceramic coating with a desirable thickness and consequently a desirable corrosion performance is 0.1 g/L.
High Throughput Preparation of Inconel 718 Alloy with Different Nb Content Based on 3D Printing
Authors: Zhang Liang , Lu Lin , Yang Qiyun
Published: September 2022

Using high throughput method of 3D printing, 20 Inconel 718 alloy samples with different Nb contents (0∼10 wt.%) are conveniently prepared in a single printing process, and then analyzed the microscopic morphology and hardness of these samples. The results show that with the increase of Nb content in the alloy, the content of Laves phase in the alloy gradually increases, and the Laves phase particles also become larger, resulting in a gradual increase in hardness. In conclusion, the new technology breaks disadvantages of traditional new material development such as high cost, long time consuming, single trial and error, and provides the possibility for rapid and accurate development of new materials.
Synthesis of Ag/Ni(OH)2 Catalyst Generated from LDH for the Selective Hydrogenation of Citral
Authors: Lian Weijie , Yu Qiong , Du Xiwang , Zhai Yuxin , Li Shuang , Ma Lan
Published: September 2022

The Ag nanoparticles with no need for reduction supported on MgAl-layered double hydroxide (LDH) were prepared. Ag nanoparticles (NPs) were achieved in the LDH support by in situ reduction, meanwhile, metal nickel generated by the reaction mechanisms of hydrogenation of citral. Sliver generates highly mobile atomic hydrogen, which reduces nickel by abstracting H from the surface support, and nickel nanoparticles formed after reaction. The action of sliver and nickelare conducive to higher selectivity to unsaturated aldehyde in Ag-[Ni(OH)2]X/LDH. The effects of support and sliver were explained by TEM, SEM, XRD and H2-TPR.
Using the -Bdot Algorithm to Reduce the Angular Velocity of Rotation for the Aist Small Spacecraft Pilot Model
Authors: Sedelnikov Andrey , Orlov Denis , Khnyryova Ekaterina , Nikolaeva Alexandra , Bratkova Maria
Published: September 2022

This article considers the issues of reducing the angular velocity of rotation for a small spacecraft operated in uncontrolled flight. A mathematical model based on Euler’s dynamic equations in the main coupled coordinate system of a small spacecraft has been constructed. The transition of the inertia tensor of the Aist small spacecraft pilot model from the bench coordinate system to the main connected coordinate system was performed. A study and evaluation of the significance of various disturbing factors in modeling the rotational motion of a small spacecraft around the center of mass has been carried out. At the same time, gravitational, aerodynamic and magnetic disturbing factors are considered. The application of the -Bdot algorithm by magnetic executive bodies to reduce the angular velocity has been studied. Results are obtained demonstrating the effectiveness of the -Bdot algorithm application on the example of the Aist small spacecraft pilot model. The results of the presented work can be used in the development of effective algorithms for controlling the movement of a small spacecraft around the center of mass in order to reduce the angular velocity of its rotational motion.
Acoustic Metamaterials Composed of Pre-stressed Oscillator Unit Cells and the Effective Method of Adjusting and Expanding Bandgap
Authors: Ma Yiliang , Wang Xiaoming , Mei Yulin
Published: September 2022

The bandgap adjustment and expansion is an important research direction in acoustic metamaterial fields. This paper designs a kind of acoustic metamaterial composed of periodically arranging oscillator unit cells, and proposes an effective way to adjust the central frequencies of the bandgap and widen the frequency range of the bandgap. First, we design an acoustic metamaterial unit cell constructed by the base structure, a mass block, and bending elastic beams connecting the mass block with the base structure; then, study the effect of pre-stresses applying to the bending elastic beams on the bandgap characteristics of the acoustic metamaterials composed of oscillator unit cells; finally, construct a kind of periodic acoustic metamaterial by combing three groups of oscillator unit cells with different pre-stresses, and realize the effective expansion of the bandgap. Our study shows that, this kind of periodic acoustic metamaterial has bandgap characteristics of low-frequency and broadband; applying pre-stresses to the bending elastic beams can make the bandgap shift towards low frequencies but will result in a narrow bandgap; combining oscillator unit cells with different pre-stresses can effectively widen the bandgap, overcoming the limitation of narrow bandgap due to applying pre-stresses.
Periodic Acoustic Structure Design Based on the Second-Order Butterworth Acoustic Filter
Authors: Bo Dejie , Mei Yulin , Wang Xiaoming
Published: September 2022

The paper proposes a design method of periodic acoustic structures composed of acoustic filters. Based on acoustic-electric analogy, the second-order Butterworth acoustic filter is first designed, which comprises a main pipe, a Helmholtz resonator, a short tube and an expansion cavity. Second, periodic structures are constructed by taking the acoustic filter as an original unit cell or modifying the acoustic filter to obtain a modified unit cell, and periodically arraying the unit cells along the axial direction of the main pipe. Then, influences of axial and circumferential periodic arrangements of the acoustic structures on the filtering performances are investigated, respectively. Next, multi-period acoustic structure models are established and their transmission losses are simulated and compared. Finally, low-frequency broadband periodic acoustic structures are constructed. The research shows that, the axial period of the acoustic structure composed of the original unit cell has no influence on the resonance frequency of acoustic structure, but contributes to transmission losses and filtering frequency ranges; the increase in the circumferential period can result in a shift in the resonance frequency towards high frequencies and a great increment in the filtering frequency bandwidth; combining unit cells with different resonance frequencies can significantly widen the filtering frequency range; low-frequency broadband performances of the acoustic structure can be implemented by combining unit cells with different resonance frequencies and increasing axial and circumferential periods of the acoustic structures.
Leak Acoustic Emission Signal Classification and Diagnosis Based on the Fractional-Order Fourier Transfer and Ensemble Learning
Authors: Liu Peng , Qi Lei
Published: September 2022

Fractional-order Fourier transform is a representational method of the fractional Fourier domain formed by the signal rotated by any angle counterclockwise about the origin on the coordinate axis in the time-frequency plane. This paper intends to use the Fractional-order Fourier transform to process the signals collected from the acoustic emission device, and then train the results through the ensemble method of SVME, KNN and Softmax, so as to build a model that can predict size and location of leak holes in acoustic emission device. The model process has a good accuracy in predicting that whether or not the leak and the size of the leak are empty. If you only need to predict whether it leaks, the accuracy reaches 75.6 %, compared to the model trained on the original data, the classification accuracy has increased by 25.6% to 66.8%. In particular, on the Softmax classifier, the addition of FFRT increases the accuracy by more than 200%.
Multimodal Modeling System in Virtual Reality Scene
Authors: Li Chunxi , Hou Wenjun , Cheng Yiting
Published: September 2022

In recent years, upgrading manufacturing informatization has put forward higher requirements for the designer. The traditional design method requires designers to switch their thinking on the platform of multiple dimensions, which increases the difficulty. With the development of virtual reality technology, the design process in a 3D environment can be realized. Aiming at the conceptual design stage in the design process, this paper carries out multi-modal interactive design for different tasks in the full three-dimensional environment. A multi-modal modeling method based on gesture interaction and supplemented by voice interaction and eye movement interaction is established through relevant experiments and analysis. The relevant platform is developed based on the Unity 3D engine, and the modeling process is completed. This paper proposes a solution to the modeling process in a 3D environment and the Enlightenment of further research.
Design and Optimization of Cab Follow-Up Hydraulic System
Authors: Lv Wenbing , Zhang Yu , Wei Ming
Published: September 2022

A new type of cab follow-up hydraulic system and universal valve structure is designed to effectively reduce the design and manufacture cost of commercial vehicle’s parts. In addition to satisfying cab overturning working conditions, the new valve also assumes the follow-up function of the hydraulic system instead of the hydraulic cylinder, and the spring parameters in the hydraulic valve can be adjusted according to different environments to improve the versatility of the valve. In order to achieve better performance, the maximum lift force is optimized using newly proposed multi-swarm PSO. In this paper, the cab overturning process model and objective optimization model are established with Matlab software, and the objective function is optimized and solved by improved multi-swarm PSO. The results show that the new cab follow-up hydraulic system and the new valve structure can meet the requirements of various working conditions of the cab well; the maximum lifting force during the cab overturning process was basically consistent with the experimental results; the improved multi-swarm PSO can solve the parameters with fast convergence, and the objective function value is reduced by 85%.
Simulation Research on Aerodynamic of Railway Freight Train Based on CFD Method
Authors: Xie Yujiang , Wu Zhenfeng
Published: September 2022

Some areas of the Lanzhou-Xinjiang Railway are accompanied by strong crosswinds all the year. The lateral force it generates pose a threat to the safe operation of railway freight trains. This paper conducts a numerical simulation study on three freight trains under five crosswind angles by using CFD method in order to aiming at the relationship between the crosswind angle and the aerodynamic force. The SIMPLE algorithm is used to solve the Reynolds-averaged N-S equation and the SST k-ω model is used for the turbulence model. The research results include the variation of the aerodynamic force on the three freight trains with the crosswind angle and the variation of the aerodynamic force on each train. In addition, this paper discusses the pressure and flow field distribution around the freight train. The results of this paper provide a reference for the safe operation of Lan-Xin Railway.
Numerical Simulation of Refrigeration Performance of Beverage Dispenser with Spiral Tube Heat Exchanger
Authors: Wang Lulu , Guo Minggao , Yan Lijing , Bai Ling
Published: September 2022

In order to shorten the refrigeration time of the beverage machine, improve the cold storage capacity, reduce the loss of energy, and improve the performance of the device. From the perspective of food safety, aluminum was selected as the cold storage material, and a spiral tube heat exchanger was used to simulate the cold storage process theoretically, and a set of economical and reasonable energy storage equipment was designed. By establishing the physical and mathematical model of the cold storage device, and using ANSYS Workbench to simulate the heat transfer process, the final water pipe outlet temperature obtained by the simulation is 2 °C, which meets the requirements of the normal outlet ideal temperature below 10 °C and the effect is good, and achieves the expected goal. Theoretically the feasibility of the device was confirmed.
Variation Spindle Speed for the Suppression of Chatter in Milling
Authors: Li Chao , Zheng Gang , Mao Sihao , Zhang Xu
Published: September 2022

In metal machining, regenerative chatter seriously affects tool life, part surface quality and cutting efficiency. To suppress chatter generated during milling, researchers have proposed a variable spindle speed technique. But the previous VSS milling model is based on two degrees of freedom system (two-DOF). In this paper, a three-DOF system suitable for VSS milling of thin-walled parts is proposed by introducing the axial contact angle. The improved semi-discretization method is used to solve the dynamical equation and obtain the stability lobe diagram (SLD). Comparing the SLDs under variable speed and constant speed, it shows that the VSS can obtain more stable regions than that of constant spindle speed (CSS). The experimental results show that VSS milling can suppress chatter.
Research on Exergy Efficiency of High-Pressure Feedwater Heater in a 1000MW Thermal Power Unit
Authors: Li Shuai , Liu Lei , Qiao Yu
Published: September 2022

As an important auxiliary unit of Modern large-scale thermal Power Unit, the performance of high-pressure feedwater heater will directly affect the performance of the whole unit. This paper introduces the calculation method of the exergy efficiency of the high-pressure feedwater heater, and compares the exergy efficiency with the thermal efficiency of the high-pressure feedwater heater system of a 1000MW unit. The results show that the exergy efficiency can clearly reflect the change of the performance of the heater when the terminal difference changes, and give a new work method of the energy saving and emission reduction.
Isotonic Muscle Strength Evaluation Based on Ultrasound Video
Authors: Zhang Beilei , Lv Qian , Guo Jianzhong
Published: September 2022

In order to improve the simplicity and accuracy of detecting muscle strength, a recognition method based on deep learning is proposed. CNN algorithm and RNN algorithm are used to complete the classification of B-ultrasound images and videos with different muscle strength. The convolutional neural network CNN algorithm is used to extract the features of B-ultrasound video, and then the cyclic neural network RNN is used to complete the time sequence analysis. The experiment uses the data set in this paper for training and testing. The results show that the accuracy of the proposed model for four categories of muscle strength video based on 0%, 20%, 40% and 60% of individual maximum strength (MVC) is about 93.45%. The resnet50 RNN algorithm proposed in this paper can effectively classify B-ultrasound videos with different muscle strength. This muscle strength detection model has strong universality for different individuals. The method of processing B-ultrasound image video can provide theoretical guidance for medical rehabilitation treatment, prosthetic limb control, professional sports training, public health and other fields, and promote the development of these fields, which is worthy of our in-depth study.
Research Progress of Stewart Vibration Isolation Platform
Authors: Liu Zhiqi , Liu Yaozong , Li Sisi
Published: September 2022

Many fields, such as optics, aerospace, ultra precision machining, etc., have high requirements for vibration in all directions of the system. Stewart platform is widely used in multi degree of freedom active vibration isolation. This paper summarizes the Stewart vibration isolation platform. Firstly, it introduces the structure of Stewart vibration isolation platform, including various configurations, flexible kinematic pairs, actuators, etc., and summarizes the influence of different structures on vibration isolation and practical applications. Then the modeling of Stewart platform is introduced, and various modeling methods, advantages and disadvantages are summarized from the aspects of kinematics and dynamics. Thirdly, the active vibration isolation control technology is introduced, and the application and development of the main control methods are summarized. Finally, combined with the development of Stewart vibration isolation platform in recent ten years, this paper points out the shortcomings of existing research and the direction of improvement.
Research on Key Technology of Temperature Control in the Whole Process of RCC Dam Construction
Authors: Jiang Xiaoming , Zhang Lei , Yan Guoshun , Liu Yi , Zheng Lei
Published: September 2022

In recent years, China’s hydropower station projects are mainly concentrated in the southwest region. These huge projects are facing the tight construction period and complex construction conditions, especially strong wind, dry and hot, single-point rainstorm, low early-stage strength and remarkable later-stage temperature rise of roller-compacted concrete (RCC) dam, it is very difficult to control temperature and prevent concrete dam from cracking. Based on the development status of intelligent temperature control for concrete dam, we innovatively carried out a study on the intelligent whole-process temperature control during the construction of RCC dam in combination with the actual situations of projects in the southwest region and the current research progresses; proposes the overall framework, roadmap and various research issues; puts forward a method to obtain the real crack-resistance properties through combining TSTM with simulation calculation; and realizes the coupling regulation with intelligent temperature control through creating feedback-simulation cloud platform; finally, the dynamic whole-process intelligent feedback control can be realized for concrete dam from raw materials to mixing, transportation, pouring, temperature monitoring, cooling water supply, protection and maintenance, so as to guarantee the construction quality of RCC dam under complex and serve conditions.
Experimental Study on Pulse Discharge Characteristics of Square Power Lithium-Ion Battery
Authors: Jin Biao , Fei Qiang , Wang Shunying , Wang Yanning , Zou Wuyuan
Published: September 2022

Lithium-ion battery has been widely used in electric vehicles due to various excellent properties, however, temperature affects its working performance. In the design of electric vehicles, to ensure that the battery works in a reasonable voltage and temperature range, the analysis of its pulse characteristics and accurate thermal-production model are the basis for the control strategy of the whole vehicle. Meanwhile, the study of lithium battery pulse discharge characteristics can provide data support for the heat source calculation required for its temperature field simulation. Therefore, it is important to study the internal resistance and open-circuit voltage (OCV) variation during charging and discharging for the accurate estimation of power battery heat generation. In this paper, the internal resistance and OCV characteristics of square lithium-ion battery were studied experimentally using the hybrid pulse power characteristic (HPPC) test method. The measured internal resistance and OCV values of lithium batteries at different temperatures and state of charge (SOC) were calculated, and the variation law of battery pulse characteristics was analyzed. The results show that the simulated and experimental values are close to each other, and the HPPC test method, the calculation method of battery pulse characteristics parameters and the experimental results can be used for battery characteristics evaluation or mathematical modeling.
Research on Information Fusion Algorithm Based on Multi-Agent Group Decision Mechanism
Authors: Tian Yachong , Jin Wei , Huang Tao , Cheng Xianyi
Published: September 2022

Aim at the problem of rough and low precision in the classifier fusion of sorting layer output, an information fusion algorithm based on multi-agent theory is presented. This algorithm proposes based on multi-agent as classifier combination. It applies the collating of individual agent are classified with Clustering Analysis method, according to the result of classification, multi-agent is classified into several groups and the weight coefficient is given to every agent. By building relative matrixes between sort set and sort making order, and classified sort set on relative matrixes, the method constructs an optimization decision making model. According to fused group consensus in rank making. After those are achieved, combination decision is made. According to experiments on speech emotion recognition database, the result of the experience indicates the model is simple and feasible.
Modeling Design and Aesthetic Analysis of Trunk Liquid Medicine Injection Machine
Authors: Chen Wei
Published: September 2022

Trunk medicine liquid injection machine is a relatively advanced spraying tool, which is mainly used to control plant diseases and insect pests in forests, urban gardens, trees on both sides of roads and streets, windbreak forest belts in rural areas and orchards. In the design of trunk medicine liquid injection machine, we should pay attention to not only the structure design, but also the modeling design. Starting from the function of trunk injection liquid machine, the design requirements are put forward. According to its structure, working principle and performance characteristics, the product modeling is planned, designed and aesthetically analyzed. The application shows that the machine can meet the requirements of pest control and disease control, and also meet the design requirements. It has beautiful and novel shape, convenient use and modern feeling.
Study on Test and Evaluation Method of Autonomous Driving Vehicle at Intersection
Authors: Liu Mingyang , Zhou Jianhua , Zeng Liqiang , Hu Zhuo , Cai Dandan
Published: September 2022

At intersection, accidents often happen due to the complexity of the traffic flow. The rapid development of autonomous driving technology helps to alleviate this problem. However, few test scenarios at intersection are involved in current autonomous driving test standards and regulations. This paper analyzes the typical traffic conflict forms and distribution laws of traffic flow at intersection, and proposes an autonomous driving test regulation consisting of 28 scenarios with their specific evaluation methods and corresponding scores based on the Analytic Hierarchy Process method, which provides guidance for further autonomous driving tests.
Acceptance of COVID-19 vaccination at different hypothetical efficacy and safety levels in Nigeria
Authors: Akele Richard , Enitan Seyi Samson , Adejumo Esther , Durosinmi Abiodun , Ezigbo Eyiuche , Itodo Grace , Abdulsalam Adedeji Abimbola , Dada Michael Olugbamila , Edafetanure-Ibeh Okeoghene Marcel , Oyedoyin Oyekan Ifeoluwa , Yelpoji Polit Umanka , Idoko Abah Michael , Opeyemi Ogunwola Oluwatosin , Nmesomachi Ogbuji Sylvia , Okafor Edwin Nkemjika , Oyekale Adesola Oyekunle
Published: September 2022

BACKGROUND: Vaccination efforts against the Coronavirus Disease 2019 (COVID-19) pandemic may be hampered by vaccine hesitancy. This study assessed the acceptance rate of COVID-19 vaccination at different hypothetical efficacy and safety levels in Nigeria.

METHODS: This web-based study was conducted among a selected Nigerian population between the month of February and May, 2021 using an online self-administered structured questionnaire hosted by Survey Monkey. WhatsApp, Twitter and Facebook were used to disseminate the invitation to take the poll. Data collected were analyzed using Statistical Package for Social Sciences Version 25 with level of significance set at P<0.05.

RESULT: The finding of this study revealed that a larger proportion of the participants were males (53.9%), within the age group of 31-40 years (25.6%), and earn an average income of less than $500 per month. Individuals between the ages of 21 and 30 years and 31 to 40 years showed the highest levels of acceptability for the COVID-19 vaccine at 95% efficacy and 5% adverse effects. Older age group (>51 years and above) had the least vaccine acceptance rate (3.3%) at 75% vaccine efficacy and 20% side effect. Respondents who held the belief that vaccinations are essential for their health had higher chance to accept COVID-19 vaccine with OR: 0.76; 50%CI (0.00-0.00), OR: 6.31; 95%CI (0.000-0.000), OR: 1.23; 95%CI (0.193-7.860) and OR: 0.696; 95%CI (0.048-10.047) based on religion, occurrence of diabetes, Pulmonary disease and Hypertension, respectively.

CONCLUSION: The results of this research indicate that vaccine acceptance rates are negatively correlated with participants' ages.
Adalékok az egykori Rendőrtiszti Főiskola Állambiztonsági Tanszéke működéséhez
Authors: Bikki István
Published: September 2022

Az egykori állampárt, a Magyar Szocialista Munkáspárt Központi Bizottságának 1969. novemberi, a Belügyminisztérium munkáját értékelő és jövőbeli feladatait meghatározó döntése zöld utat engedett a magyarországi rendőrtisztképzés átalakításának. Jelentős szintbeli ugrás lett a Rendőrtiszti Főiskola létrehozása. Ennek keretei között jött létre, persze az elődök tapasztalatait itt is felhasználva, az Állambiztonsági Tanszék. A főiskolai keretek között megvalósuló állambiztonságitiszt-képzés persze magán viselte a korabeli pártállami jegyeket. A képzés ma is helytálló szakmai részei mellett, igen jelentős szerepet töltött be a marxista–leninista ideológiai elkötelezettség és az ennek az ideológiának megfelelően kialakított ellenségkép alkalmazása az oktatásban, majd a napi feladatok végrehajtása során. A képzés 1990-es felfüggesztése, majd az állambiztonságiból több évtizedes szünet után nemzetbiztonságivá alakítása persze nem történhetett volna meg az elődök tapasztalatainak felhasználása nélkül.
Turizm Destinasyonu Risk Algısı ile Öz Etkinlik Düzeyi Arasındaki İlişki: Van İli Örneği
Authors: ORHUN Beste Nisa , MERİÇ Sağbetullah
Published: September 2022

Bu araştırmada kişilerin destinasyona yönelik algıladıkları riskleri ifade eden turistik destinasyon risk algısı ile kişilerin kendi beceri ve yeteneklerine olan inancını ifade eden öz etkinlik arasındaki ilişki incelenmiştir. Araştırma evrenini Türkiye’de ikamet eden Türkiye Cumhuriyeti vatandaşları oluşturmaktadır. Van ilinin doğal ve kültürel çekiciliklere sahip önemli bir turizm destinasyonu olması ve Van iline yönelik risk algısının yüksek olabileceği düşüncesi sebebiyle araştırma alanı olarak Van ili seçilmiştir. Araştırmada nicel araştırma yöntemlerinden olan anket tekniği ile veri toplanmıştır. Çevrim içi ve yüz yüze anketler ile elde edilen verilerin homojen olmasına dikkat edilerek 2072 katılımcıdan veri toplanmıştır. Araştırma kapsamında katılımcılardan toplanan verilerin frekans ve ortalama hesapları yapılarak değişkenler arasındaki ilişkiler ve etkiler analiz edilerek yorumlanmıştır. Araştırma sonucunda turistik destinasyon risk algısı ile öz etkinlik inancı arasında negatif yönlü anlamlı bir ilişki tespit edilmiştir. Ayrıca öz etkinlik düzeyinin bir alt boyutu olan zorluklara atılma-mücadele faktörünün, destinasyon risk algısı üzerinde etkili olduğu sonucuna ulaşılmıştır. Elde edilen sonuçlar doğrultusunda ilgililere yönelik öneriler sunulmuştur
PENGARUH PENGUNGKAPAN MODAL INTELEKTUAL TERHADAP BIAYA MODAL EKUITAS
Authors: Vista Anggraeni Anindita , Indarti Maria Goreti Kentris
Published: September 2022

The cost of equity capital is the rate of return expected by investors, which must bepaid by the company as a form of return on the capital provided by investors to thecompany. This study examines the effect of intellectual capital disclosure and its threecomponents, namely human capital disclosure, structural capital disclosure, andrelational capital disclosure on the cost of equity capital. The population in this studyare banking sector companies listed on the Indonesia Stock Exchange in 2015-2019.Based on the purposive sampling method, 165 data were obtained. The test resultsusing ordinary least square regression showed that the disclosure of intellectualcapital, disclosure of human capital, disclosure of relational capital had a significantnegative effect on the cost of equity capital. However, the disclosure of structuralcapital has no effect on the cost of equity capital
Analisis pengaruh fraud diamond terhadap potensi kecurangan program bantuan langsung tunai dana desa kabupaten jombang
Authors: Sholawati Alvin , Bhilawa Loggar
Published: September 2022

This study was conducted with the aim of knowing the effect of Fraud Diamond elements which include pressure, opportunity, rationalization, and capability on the potential for fraud in the village fund program in Jombang Regency, East Java. This research uses quantitative methods, sources of data in this study were obtained from primary data sources by distributing questionnaires to village heads and village officials in Jombang Regency who came from Jombang District, Mojoagung District, Peterongan District, and Diwek District. The total population of this study was 1,510 with a total of 315 samples and was selected using cluster random sampling technique. The data analysis technique is using multiple linear regression with the help of the IBM SPSS 23 application program. The hypothesis in this study is that the Fraud Diamond Theory element consisting of pressure, opportunity, rationalization, and capability has an influence on the potential for fraud in village funds in Jombang Regency. The test results show that all hypotheses are accepted, namely the Fraud Diamond Theory element affects the potential for fraud in the village fund program in Jombang Regency.
ANALISIS KECURANGAN LAPORAN KEUANGAN MELALUI FRAUD HEXAGON THEORY
Authors: Kusumosari Larassanti , Solikhah Badingatus
Published: September 2022

Financial statements are statements made by company to convey the financial condition,performance, and company’s operational activities aimed at the users of financialstatements as decision-making. The purpose of this study is to analyze fraudulentfinancial statements through fraud hexagon theory, that measured with financial targets,CEO education, political connections, state-owned enterprises, ineffective monitoring,rationalization and CEO duality. The samples of this study consist of 106 companieslisted on the Indonesia Stock Exchange (IDX) in 2014-2018. This study uses data panelregression analysis technique with EViews10. The results of this study show thatfinancial targets, state-owned enterprises, ineffective monitoring, political connections,rationalization, and CEO duality have a significant effect. Meanwhile, CEO educationhave no effect on fraudulent financial statements. Based on this study, the companiesshould report financial statements that describe the real conditions. Further research isrecommended to add other proxies to measure the elements in fraud hexagon theory
ANALISIS DETERMINAN KUALITAS PELAPORAN KEUANGAN PERUSAHAAN NON JASA KEUANGAN DI BURSA EFEK INDONESIA
Authors: Digdowiseiso Kumba , Subiyanto Bambang , Fahlevi Lubis Reza
Published: September 2022

This study aims to analyze the determinants that affect the quality of financial reporting, which constitutes leverage, company size, cash flow volatility, sales volatility, company operating cycle, loss proportion, intangible asset intensity, and capital intensity. We used the WarpPLS 7.0 program in analyzing the secondary data. The sample in this study were non-financial service companies selected through the purposive sampling technique in the period 2015-2019. The research method used is the descriptive quantitative method with regression analysis. The research results showed that leverage, company size, and capital intensity had a significant and positive effect on the quality of financial reporting. Meanwhile, the operating cycle, the proportion of losses, and the intensity of intangible assets had a significant and negative effect on financial reporting quality. However, cash flow volatility and sales volatility produced an insignificant effect on the quality of financial reporting.
FAKTOR-FAKTOR YANG MEMPENGARUHI KEMAMPUAN AUDITOR DALAM MENDETEKSI KECURANGAN (FRAUD)
Authors: Digdowiseiso Kumba , Subiyanto Bambang , Indra Priadi Jodi
Published: September 2022

The study aims to analyze the effects of skepticism professional, independency, and competency on ability to detect fraud. Research is conducted on auditors working in the audit board of the Republic of Indonesia in Central Jakarta. The population in this research is an auditor who works at audit board of the Republic of Indonesia in Central Jakarta, the research method used is simple random sampling. Based on the method, which is willing to be a respondent as many as 106 auditors. The data in this research is the primary data obtained through questionnaires. The data analysis method used is statistical analysis in the form of multiple regression tests. Data processed using SPSS v26. The results of this study show that the skepticism professional positively affects the ability to detect fraud. Similarly, the independent has no effect on ability to detect fraud. Meanwhile, competence positively affects the ability to detect fraud.
Implementasi Blockchain Pada Akuntansi dan Audit di Indonesia
Authors: Pratiwi Lady Liesdyana
Published: September 2022

Since 2009, blockchain has become a potentially transformative information technology that is expected to be as revolutionary as the Internet. Originally developed as a methodology for recording cryptocurrency transactions, the functionality of the blockchain has grown into a large number of applications, such as banking, financial markets, insurance, voting systems, lease contracts, and government services. Despite such advances, the application of blockchain accounting and assurance is still unexplored. This paper aims to provide an initial discussion of how blockchain can enable a real-time, verifiable and transparent accounting ecosystem. In addition, blockchain has the potential to change current auditing practices, resulting in a more precise and timely automated audit system.
Estados Unidos - China, rivalidad por la hegemonía mundial
Authors: Jiménez Estrella , De la Iglesia Pablo , Revenga Blanca , Samper Verónica
Published: September 2022

Estados Unidos ya no es la única gran potencia en el sistema internacional. China ha ido asumiendo un papel mucho más activo en la esfera política y geoestratégica global, transformando la política internacional, así como el equilibrio de la economía mundial. La aspiración del gigante asiático a convertirse en una potencia económica, militar y geopolítica ha generado tensiones ocasionales con los países occidentales desde principios del 2000. Estas tensiones se hicieron especialmente visibles con la fuerte escalada de restricciones comerciales con Estados Unidos a partir de 2018, dando lugar a un proceso de desacoplamiento entre ambas potencias. El estallido de la pandemia en 2020 y la reciente guerra en Ucrania han acelerado esta tendencia de desacoplamiento, dando lugar a un entorno internacional más complejo y disputado donde tanto Estados Unidos como China tienen ambiciones hegemónicas y compiten entre sí por el poder mundial en tres esferas económicas principalmente: comercial, tecnológica y financiera.
Alternative medical waste treatment during COVID-19 case study in Hospital X Jakarta City
Authors: Atthar Aura Dhia Rizki , Sari Mega Muitiara , Suryawan I Wayan Koko
Published: September 2022

Medical waste management in health care facilities is very important because medical waste has various health risks. One hospital can incur up to Rp 1 billion/year for medical waste treatment costs. This study aims to analyze the proper processing of medical waste in hospitals in Jakarta during the pandemic. This type of research is a descriptive observational study conducted cross-sectional through observations on solid waste management at Hospital X, Jakarta City. Decision analysis in this study uses the Analytical Hierarchy Process (AHP) method to support the medical waste treatment decision-making process. In this study, two processing methods are given, namely the incinerator and autoclave. An incinerator is a thermal process used to treat medical waste at controlled temperatures. An autoclave is a medical waste treatment that combines moisture, heat, and pressure to sterilize medical waste. The results of the AHP show that hospitals should optimize autoclaves to sterilize highly infectious waste, which can also be used to sterilize sharp medical waste. Meanwhile, medical waste treatment using incinerators can generate other waste in the form of ash from combustion residues. Ash from the combustion process can contain heavy metals such as Cr, Zn, and Pb. Therefore, a strategy is needed to deal with this waste generation so that the final treatment does not end in a landfill but can be a useful product.
Choosing commuter transportation modes to support human mobility (Case study: Bulukumba Regency, South Sulawesi)
Authors: Wulansari Indriaty
Published: September 2022

To carry out daily activities and fulfill needs requires movement. In carrying out these movement, there are two choice, namely moving with transportation modes or without transportation modes (walking). This study aims to knowing the factors that influence the choice of private and public transportation modes as well as modeling the choice of commuter transportation modes.  Focus of this study is Bulukumba regency that one of the regencies in the southern part of South Sulawesi. The transportation characteristics discussed are the characteristics of the trip (the purpose of he trip, time and distance), characteristics of behaviour travellers (mode selection and reasons for choosing the mode) and characteristics of transportation facilities (Quantitatively involves: waiting time, time for access to other modes and tariffs. Qualitatively involves: safety, comfort and trust). The result of the analysis obtained information that the dominant mode of transportation is used by commuter in Bulukumba regency are private motor vehicles. The tendency of the people of Bulukumba regency to use motorbikes is assessed because motorbikes have a high level of comfort and trust, cheap tariff, flexible schedule, easy access, quickly reach travel destinations and efficiency in use compared to private cars or public transportation modes.  The R2 value of the private motorbike mode selection model is 0.765 meaning that the education and work variables affect the motorbike mode selection by 76.5% and the rest is influenced by other variables. The model for selection public transportation modes has an R2 value of 0.666, meaning that the tourism and trade variables affect the choice of the public transportation modes by 66.6% and the rest is influenced by other variables.
Analysis of the influence of additional plastic waste (HDPE) as Mixed Asphalt AC-WC on Marshall Parameters
Authors: Pinem Hendriquita Karonsih Widyapsari Boru , Pristyawati Tantin , Safarizki Hendramawat Aski
Published: September 2022

Flexible pavement structures that use asphalt as a binder are currently the mainstay of the Indonesian people because of their large load-bearing capacity and economical construction costs. One type of flexible pavement used is asphalt concrete with the top surface layer or Asphalt Concrete Wearing Course (AC-WC). The use of asphalt from the petroleum refining process is one of the problems because its availability is decreasing. However, the condition of the road pavement which has a limited life requires periodic repairs to maintain the condition of the road. In addition, there are also problems regarding the processing of plastic waste which is still not optimal. Based on data published by the National Waste Management Information System in 2020 as much as 18.3% of the total waste generated. This figure increased by 2.3% from the previous year. Sukoharjo Regency also experienced an increase in sales of plastic waste by 1.16% from 14.04% (in 2019) and now to 15.20% (in 2020). Plastic is one type of polymer in the thermoplastic polymer group which is processed by organic chemical compounds. One type of plastic that is often used is High Density Polyethylene (HDPE) which has strong, light and flexible properties that can soften at a temperature of 130-137"℃" and harden again if. In this study, HDPE plastic bag waste was used as a pure asphalt substitute with variations in the proportion of substitution of 2%, 4%, 6%, 8%, 10%. Where this study aims to analyze the effect of adding HDPE plastic waste as a mixture of AC-WC asphalt on asphalt parameters. From the research conducted, the use of asphalt content of choice is 5.7%. With the results of the mixture with HDPE asphalt mixture HDPE has increased with the addition of variations of HDPE. The flexibility of HDPE asphalt mixture decreased according to the flow meter reading. At a content of 2% HDPE has the largest percentage of VIM, flow, and proportion of VMA, but has the lowest value and percentage of VFB. The best range of HDPE content is in the percentage of 4%-6% because it can increase the value of a more flexible mixture and optimal asphalt absorption. The use of HDPE plastic waste is an alternative in waste treatment and can reduce the use of asphalt. It can be concluded that HDPE plastic bags can be used as an alternative to bitumen substitutes that meet the requirements of Bina Marga 2018 Revised 2nd Edition.
Increasing the capacity of the unsignalized three way Petir Intersection, Serang Regency
Authors: Artiwi Nila Prasetyo , Rosdiyani Telly
Published: September 2022

Population growth increases every year, especially in Serang Regency, causing traffic problems including accidents, congestion, or being faced with conditions of frequent road scrambling. In preliminary observations, this happened to the Unsignalized Three Way Petir Intersection . This research was conducted to determine the existing performance of the intersection and find alternative solutions to overcome the problem situation and find out the cost needs needed in planning the proposal. Thus, of course, data is needed to be able to analyze it.  The method used is based on the Indonesian Road Capacity Manual (MKJI) of 1997, the required data consists of primary data by conducting a field survey, to find out the volume of vehicles (Average daily traffic / ADT for seven days from 06.00 to 18.00 WIB, road geometrics, traffic conditions, and environmental conditions. It is known that the Unsignalized Three Way Petir Intersection type is type 322, meaning 3 arms 2 lanes 2 directions, the data uses the form USIG I and the form USIG II from MKJI 1997. The results showed that the existing performance at the Unsignalized Three Way Petir Intersection showed the largest total traffic flow value of 3,480 passenger car unit (pcu) / hour, the saturation degree (DS) value was 1,026, which means, the traffic flow has exceeded the road capacity, with an intersection traffic delay of 16,426 sec / pcu, a delay in main road traffic (B-D) of 7.4584 sec / pcu and a delay in minor road traffic (C) of 38.2352 sec / pcu,  queue odds are between 42.3554% to 84%.  Alternative solutions that can be done prohibit the right turn traffic from minor roads, as well as widening on the main road from 3 m per lane to 3.5 m so that the short width of each lane = 3.5 m and the shoulder width of 0.5 m, in total to 8 m, so that the cost required in the planning is Rp. 2,220,051,000 (two billion two hundred twenty million fifty-one thousand rupiah).