bluuebunny/crossref_metadata_2025 huggingface dataset:
Gait Segmentation Method Using a Plantar Pressure Measurement System with Custom-Made Capacitive Sensors
Authors: Aqueveque Pablo , Germany Enrique , Osorio Rodrigo , Pastene Francisco
Published: January 2020

Gait analysis has been widely studied by researchers due to the impact in clinical fields. It provides relevant information on the condition of a patient’s pathologies. In the last decades, different gait measurement methods have been developed in order to identify parameters that can contribute to gait cycles. Analyzing those parameters, it is possible to segment and identify different phases of gait cycles, making these studies easier and more accurate. This paper proposes a simple gait segmentation method based on plantar pressure measurement. Current methods used by researchers and clinicians are based on multiple sensing devices (e.g., multiple cameras, multiple inertial measurement units (IMUs)). Our proposal uses plantar pressure information from only two sensorized insoles that were designed and implemented with eight custom-made flexible capacitive sensors. An algorithm was implemented to calculate gait parameters and segment gait cycle phases and subphases. Functional tests were performed in six healthy volunteers in a 10 m walking test. The designed in-shoe insole presented an average power consumption of 44 mA under operation. The system segmented the gait phases and sub-phases in all subjects. The calculated percentile distribution between stance phase time and swing phase time was almost 60%/40%, which is aligned with literature reports on healthy subjects. Our results show that the system achieves a successful segmentation of gait phases and subphases, is capable of reporting COP velocity, double support time, cadence, stance phase time percentage, swing phase time percentage, and double support time percentage. The proposed system allows for the simplification of the assessment method in the recovery process for both patients and clinicians.
A Low-Latency and Energy-Efficient Neighbor Discovery Algorithm for Wireless Sensor Networks
Authors: Gu Zhaoquan , Cao Zhen , Tian Zhihong , Wang Yuexuan , Du Xiaojiang , Mohsen Guizani
Published: January 2020

Wireless sensor networks have been widely adopted, and neighbor discovery is an essential step to construct the networks. Most existing studies on neighbor discovery are designed on the assumption that either all nodes are fully connected or only two nodes compose the network. However, networks are partially connected in reality: some nodes are within radio range of each other, while others are not. Low latency and energy efficiency are two common goals, which become even more challenging to achieve at the same time in partially connected networks. We find that the collision caused by simultaneous transmissions is the main obstruction of achieving the two goals. In this paper, we present an efficient algorithm called Panacea to address these challenges by alleviating collisions. To begin with, we design Panacea-NCD (Panacea no collision detection) for nodes that do not have a collision detection mechanism. When n is large, we show the discovery latency is bounded by O ( n · ln n ) for any duty cycle (the percentage time to turn on the radio), where each node has n neighbors on average. For nodes that can detect collisions, we then present Panacea-WCD which also bounds the latency within O ( n · ln n ) slots. Finally, we conduct extensive evaluations and the results also corroborate our analyses.
Temperature and Strain Correlation of Bridge Parallel Structure Based on Vibrating Wire Strain Sensor
Authors: Peng Lu , Jing Genqiang , Luo Zhu , Yuan Xin , Wang Yixu , Zhang Bing
Published: January 2020

Deformation is a ubiquitous phenomenon in nature. This process usually refers to the change in shape, size, and position of an object in the time and spatial domain under various loads. Under normal circumstances, during engineering construction, technicians are generally required to monitor the safe operation of structural facilities in the transportation field and the health of bridge, because monitoring in the engineering process plays an important role in construction safety. Considering the reliability risk of sensors after a long-time work period, such as signal drift, accurate measurement of strain gauges is inseparable from the value traceability system of high-precision strain gauges. In this study, two vibrating wire strain gauges with the same working principle were measured using the parallel method at similar positions. First, based on the principle of time series, the experiment used high-frequency dynamic acquisition to measure the thermometer strain of two vibrating wire strain gauges. Second, this experiment analyzed the correlation between strain and temperature measured separately. Under the condition of different prestress, this experiment studied the influencing relationship of temperature corresponding variable. In this experiment, the measurement repetitiveness was analyzed using the meteorology knowledge of single sensor data, focused on researching the influence of temperature and prestress effect on sensors by analyzing differences of their measurement results in a specified situation. Then, the reliability and stability of dynamic vibrating wire strain gauge were verified in the experiment. The final conclusion of the experiment is the actual engineering in the later stage. Onsite online meteorology in the application provides support.
HKF-SVR Optimized by Krill Herd Algorithm for Coaxial Bearings Performance Degradation Prediction
Authors: Liu Fang , Li Liubin , Liu Yongbin , Cao Zheng , Yang Hui , Lu Siliang
Published: January 2020

In real industrial applications, bearings in pairs or even more are often mounted on the same shaft. So the collected vibration signal is actually a mixed signal from multiple bearings. In this study, a method based on Hybrid Kernel Function-Support Vector Regression (HKF–SVR) whose parameters are optimized by Krill Herd (KH) algorithm was introduced for bearing performance degradation prediction in this situation. First, multi-domain statistical features are extracted from the bearing vibration signals and then fused into sensitive features using Kernel Joint Approximate Diagonalization of Eigen-matrices (KJADE) algorithm which is developed recently by our group. Due to the nonlinear mapping capability of the kernel method and the blind source separation ability of the JADE algorithm, the KJADE could extract latent source features that accurately reflecting the performance degradation from the mixed vibration signal. Then, the between-class and within-class scatters (SS) of the health-stage data sample and the current monitored data sample is calculated as the performance degradation index. Second, the parameters of the HKF–SVR are optimized by the KH (Krill Herd) algorithm to obtain the optimal performance degradation prediction model. Finally, the performance degradation trend of the bearing is predicted using the optimized HKF–SVR. Compared with the traditional methods of Back Propagation Neural Network (BPNN), Extreme Learning Machine (ELM) and traditional SVR, the results show that the proposed method has a better performance. The proposed method has a good application prospect in life prediction of coaxial bearings.
Frequency Invariant Beamforming for a Small-Sized Bi-Cone Acoustic Vector–Sensor Array
Authors: Fang Erzheng , Gui Chenyang , Yang Desen , Zhu Zhongrui
Published: January 2020

In this work, we design a small-sized bi-cone acoustic vector-sensor array (BCAVSA) and propose a frequency invariant beamforming method for the BCAVSA, inspired by the Ormia ochracea’s coupling ears and harmonic nesting. First, we design a BCAVSA using several sets of cylindrical acoustic vector-sensor arrays (AVSAs), which are used as a guide to construct the constant beamwidth beamformer. Due to the mechanical coupling system of the Ormia ochracea’s two ears, the phase and amplitude differences of acoustic signals at the bilateral tympanal membranes are magnified. To obtain a virtual BCAVSA with larger interelement distances, we then extend the coupling magnified system into the BCAVSA by deriving the expression of the coupling magnified matrix for the BCAVSA and providing the selecting method of coupled parameters for fitting the underwater signal frequency. Finally, the frequency invariant beamforming method is developed to acquire the constant beamwidth pattern in the three-dimensional plane by deriving several sets of the frequency weighted coefficients for the different cylindrical AVSAs. Simulation results show that this method achieves a narrower mainlobe width compared to the original BCAVSA. This method has lower sidelobes and a narrower mainlobe width compared to the coupling magnified bi-cone pressure sensor array.
Supporting Electrification Policy in Fragile States: A Conflict-Adjusted Geospatial Least Cost Approach for Afghanistan
Authors: Korkovelos Alexandros , Mentis Dimitrios , Bazilian Morgan , Howells Mark , Saraj Anwar , Fayez Hotaki Sulaiman , Missfeldt-Ringius Fanny
Published: January 2020

Roughly two billion people live in areas that regularly suffer from conflict, violence, and instability. Infrastructure development in those areas is very difficult to implement and fund. As an example, electrification systems face major challenges such as ensuring the security of the workforce or reliability of power supply. This paper presents electrification results from an explorative methodology, where the costs and risks of conflict are explicitly considered in a geo-spatial, least cost electrification model. Discount factor and risk premium adjustments are introduced per technology and location in order to examine changes in electrification outlooks in Afghanistan. Findings indicate that the cost optimal electrification mix is very sensitive to the local context; yet, certain patterns emerge. Urban populations create a strong consumer base for grid electricity, in some cases even under higher risk. For peri-urban and rural areas, electrification options are more sensitive to conflict-induced risk variation. In this paper, we identify these inflection points, quantify key decision parameters, and present policy recommendations for universal electrification of Afghanistan by 2030.
Seaweed Production Potential in the Brazilian Northeast: A Study on the Eastern Coast of the State of Rio Grande do Norte, RN, Brazil
Authors: Andrade Herika Mylena Medeiros de Queiroz , Rosa Luiz Pinguelli , Souza Flavo Elano Soares de , Silva Neilton Fidelis da , Cabral Maulori Curié , Teixeira Dárlio Inácio Alves
Published: January 2020

Seaweed is a source of multipurpose bioresources, providing millions of dollars to the world’s economy and performing various ecosystem services that aid in maintaining marine balance, reducing eutrophication, providing nutrients and mitigating atmospheric CO2. In this context, this study aims to evaluate the potentialities of the cultivation of the Crassiphycus birdiae seaweed on the eastern coast of the state of Rio Grande do Norte (RN), Brazil, considering the physical and environmental aspects. Estimates concerning suitable areas and their productive potential for the Biomass, Bioethanol, Biofertilizer and Agar bioproducts were carried out. These estimates were based on the Modular Ferry System (MFS) installed on the state coast. Suitable cultivation areas were determined by applying an Analytic Hierarchy Process (AHP) and change detection analysis based on physical and infrastructure factors, such as areas sheltered by winds, sea currents and waves, proximity to seaweed banks, road infrastructure and socioeconomic and environmental factors. Areas identified as suitable for seaweed cultivation totaled 2227.59 ha in area, with a productive potential of 195 thousand tons of fresh biomass/year, over two million liters of ethanol/year and about 43 tons of agar/year. These findings demonstrate that the northeastern coast of Brazil has the potential to generate employment and income through seaweed cultivation, stimulating the coastal region’s development in a sustainable manner.
Evaluating a Mobility Service Application for Business Travel: Lessons Learnt from a Demonstration Project
Authors: Andersson Alfred , Winslott Hiselius Lena , Berg Jessica , Forward Sonja , Arnfalk Peter
Published: January 2020

Business travel contributes to significant greenhouse gas emissions, and there is a need for measures that reduce the demand for trips made with energy-intensive means of transport. In this study, a mobility service application (MSA) introduced in 13 Swedish organisations was tested and evaluated to facilitate booking and handling of business trips, in particular public transport. A before and after study consisting of surveys and interviews with employees at the organisations were conducted. The results show that the MSA was mostly used for regional and local public transport trips, and the users stated that the MSA made it easier to travel by public transport, although this particular result should be seen as tentative due to the small sample size. Three factors that influence the success of a new MSA as a means to increase sustainable business trips were identified: management control and proactiveness; perceived improvement of intervention; functions and technical sufficiency. The results also highlight the need to establish organisational conditions that facilitate sustainable business travel, such as coherent travel policy, accessibility to sustainable modes of transport, and a culture that encourages environmentally friendly behaviour. The study suggests improvements that can be made to similar interventions and strategies that can be introduced to promote sustainable business travel.
Increasing Efficiency of Field Water Re-Injection during Water-Flooding in Mature Hydrocarbon Reservoirs: A Case Study from the Sava Depression, Northern Croatia
Authors: Malvić Tomislav , Ivšinović Josip , Velić Josipa , Sremac Jasenka , Barudžija Uroš
Published: January 2020

The authors analyse the process of water re-injection in the hydrocarbon reservoirs/fields in the Upper Miocene sandstone reservoirs, located in the western part of the Sava Depression (Croatia). Namely, this is the “A” field with “L” reservoir that currently produces hydrocarbons using a secondary recovery method, i.e., water injection (in fact, re-injection of the field waters). Three regional reservoir variables were analysed: Porosity, permeability and injected water volumes. The quantity of data was small for porosity reservoir “L” and included 25 points; for permeability and injected volumes of water, 10 points each were measured. This study defined selection of mapping algorithms among methods designed for small datasets (fewer than 20 points). Namely, those are inverse distance weighting and nearest and natural neighbourhood. Results were tested using cross-validation and isoline shape recognition, and the inverse distance weighting method is described as the most appropriate approach for mapping permeability and injected volumes in reservoir “L”. Obtained maps made possible the application of the modified geological probability calculation as a tool for prediction of success for future injection (with probability of 0.56). Consequently, it was possible to plan future injection more efficiently, with smaller injected volumes and higher hydrocarbon recovery. Prevention of useless injection, decreasing number of injection wells, saving energy and funds invested in such processes lead to lower environmental impact during the hydrocarbon production.
Acknowledgement to Reviewers of Surfaces in 2019
Authors:   Surfaces Editorial Office
Published: January 2020

The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not [...]
Alat Pewarna Semi Otomatis Untuk Meningkatkan Produksi Kerajinan Anyaman Purun
Authors: Indriani Fatma , Shiddiq Mohammad Mahfuzh
Published: January 2020

Kerajinan anyaman purun mempunyai nilai ekonomi yang besar. Salah satu kendala dalam pengembangan kerajinan anyaman purun adalah proses produksi yang masih tradisional sehingga belum mampu memenuhi permintaan pasar dan kualitas produknya yang masih rendah. Melalui kegiatan KKN-PPM mahasiswa FMIPA ULM membuat alat pewarna purun semi otomatis untuk meningkatkan efisiensi proses pewarnaan. Hasil kegiatan menunjukkan alat pewarna tersebut dapat mempercepat proses pewarnaan hingga 4 kali dibandingkan proses pewarnaan tradisional. Penyempurnaan alat tersebut masih diperlukan untuk menghilangkan komponen biaya produksi yang lain.
DETERMINAN STRUKTUR MODAL: KAJIAN LIKUIDITAS, PELUANG PERTUMBUHAN DAN ASSET BERWUJUD PERUSAHAAN SUB SEKTOR PROPERTY & REAL ESTATE DI INDONESIA
Authors: Suciati Ranila
Published: January 2020

This study aims to determine the effect of Liquidity, Growth Opportunities, and Tangible Assets on the Capital Structure of Property and Real Estate Companies in Indonesia. This research is a quantitative research which aims to systematically explain the facts and properties of an object in the study and then merge between the variables associated with it by presenting secondary data from financial statements of property companies in Indonesia. The population used in this study are property companies listed on the Indonesian stock exchange in the period 2012-2016. The sample used in this study were 32 property companies in Indonesia by using the purpose sampling method to obtain a representative sample that matches the established criteria. In this study, the data analysis method used is the panel data regression method which is a combination of time series and cross sections in property companies in Indonesia. Research results for property companies in Indonesia The R square value of this model is 0.5126 which means that variations of capital structure that can be explained by the independent variables analyzed are LIQ, GROWTH, and TANG by 51.26 percent and the remaining 48.74 percent explained by other factors not included in this study.
Pseudoaneurysm of the Internal Maxillary Artery in Recurrent Head And Neck Cancer Patient—a Rare Case Report
Authors: Agarwal Dr. Vikash , Saha Dr. Manas , Ghata Dr. Swarupjit , Hawaldar Dr. Chaitanya , Todi Dr. S K , Choudhary Dr. Hirak Roy
Published: January 2020

Acute bleeding in the head and neck area occurs due to various causes and often is a life-threatening situation. Head and neck cancers can be a cause of intractable hemorrhage from local tumour irradiation or spontaneous tumourbleeding1. In addition to tumour-related bleeding, iatrogenic bleeding related to surgical procedures or trauma, can also lead to intractable, life-threatening bleeding1. A pseudoaneurysm is an extravascular hematoma that communicates with the intravascular space. This rare lesion receives its name from the fact that its vascular wall is composed of fibrous connective tissue (pseudo-capsule) that develops after rupture of the endothelium2. Pseudoaneurysms occur when there is a partial disruption in the wall of a blood vessel, causing a hematoma that is either contained by the vessel adventitia or the perivascular soft tissue3.
ИНДИЙСКАЯ ЛИТЕРАТУРА В РУССКИХ И
КЫРГЫЗСКИХ ТРАНСФОРМАЦИЯХ
Authors: Эралиева Ы.
Published: January 2020

Аннотация: В данной статье прослеживается эволюция переводов индийской литературы на русский язык, осуществленные в ХХ веке с санскрита, с урду, с хинди, с гуджарати, с ория, с маратхи, с бенгальского, а также с английских переводов. На кыргызский язык произведения индийской литературы были переведены с русских трансформаций во второй половине ХХ века. В статье анализируется эквивалентность оригиналов и переложений на русский и кыргызский языки, дана
оценка значимости и художественной ценности переложений. Также оценивается интеллектуальный труд русских и кыргызских переводчиков, открывших для современных читателей богатый мир индийского художественного слова.
Ключевые слова: перевод, литература, индийский рассказ, труд, значимость, переводчик, автор, поэзия, популярность, традиция, герой, культура, достояние.
Аннотация: Бул макалада ХХ кылымда санскриттен, урду, хинди, гуджарати, ория, маратхи, бенгал жана англис тилдеринен индия адабиятынын орус тилине котормолорунун эволюциясына байкоо салынат. Индия адабиятынын чыгармалары кыргыз тилине ХХ кылымдын экинчи жарымында орус котормолорунан которулган. Макалада оригинал менен орус, кыргыз тилдерине котормолорунун экви-
валенттүүлүгү талданат, котормолордун адабий баалуулуктарына баа берилет.Ошондой эле индия көркөм сөзүнүн бай дүйнөсүн азыркы окурмандарга ачып берген орус жана кыргыз котормочуларынын интеллектуалдык эмгегине баа берилет.
Түйүндүү сөздөр: котормо, адабият, индия ангемеси, эмгек, маанилуулук, котормочу, автор, поэзия, популярдуулук, салт, каарман, маданият, баалуулук.
Annotation: This article traces the evolution of translations of Indian literature into
Russian, carried out in the twentieth century from Sanskrit, from Urdu, from Hindi, from
Gujarati, from Oriya, from Marathi, from Bengali, as well as from English translations.
The works of Indian literature were translated into Kyrgyz from Russian transformations
in the second half of the 20th century. The article analyzes the equivalence of originals and transcriptions into Russian and Kyrgyz languages, assesses the significance and artistic value of transcriptions. The intellectual work of Russian and Kyrgyz translators, who have opened up the rich world of Indian art words to modern readers, is also evaluated.
Keywords: translation, literature, Indian story, work, significance, translator,
author, poetry, popularity, tradition, hero, culture, wealth.
El Mapa Integrado Andino del Norte
Authors: Martín Ángel , Contreras Juan José , Salinas Edson , Valverde Percy , Balbi Rafael , Medeiros Vinicius E. , Vianey Alesandra , Fajardo Amadeo , Guerrón Paulina , Tene Eliana , Sámuels Elizabeth , Agrazal Ariel , Flores Reynaldo , Avilés Wilman , Parcher Jean , Lugo Roberto , Blanco Luis Miguel , Rodríguez Antonio F.
Published: January 2020

El Mapa Integrado Andino del Norte, es una iniciativa liderada por el Instituto Panamericano de Geografía e Historia (IPGH) y apoyada por CAF-Banco de Desarrollo de América Latina, en el contexto del Programa GeoSUR, que tiene por objeto desarrollar el Primer Mapa Integrado de los países Andinos del Norte a escala1:250.000 a través del trabajo coordinado de los Institutos Geográficos de Panamá, Colombia, Ecuador, Perú y Bolivia. Esta iniciativa contó con la asesoría especializada y coordinación técnica delCentro Nacional de Información Geográfica (CNIG) del Instituto Geográfico Nacional de España y con la contribución especial de la Sección Nacional del IPGH en Estados Unidos de América, a través del Programa de Asistencia Técnica Internacional del Departamento del Interior (DOI-ITAP), de la Agencia de los EstadosUnidos para el Desarrollo Internacional (USAID) y con la asesoría del Servicio Geológico de Estados Unidos (USGS). El mapa tiene por finalidad beneficiar al conjunto de usuarios de información geográfica de los países de la Comunidad Andina de Naciones a través de la disponibilidad y acceso a información cartográfica regional oficial, de calidad, integrada y armonizada a nivel supranacional. Este proyecto integra los principales elementos de la Hidrografía, Límites Administrativos, Poblados, Vías, Morfología del Terreno y algunos elementos considerados como indispensables para entender la geografía de cada país, agrupados bajo el titulo Miscelánea. Una metodología participativa permite integrar no solo criterios técnicos de lainformación geoespacial de cinco países, también permite asegurar la continuidad de este proyecto a través del compromiso e integración de los Institutos Geográficos oficiales de cada país, a una escala útil para la planificación regional y el ordenamiento del territorio.
El Mapa de América Meridional de Juan de la Cruz Cano de 1775, y los problemas territoriales de España en Brasil
Authors: Jiménez Garcés José Andrés
Published: January 2020

El presente artículo expone los problemas con que se encontró el geógrafo Juan de la Cruz Cano, durante el proceso de elaboración y entrega a la Secretaría de Estado del Mapa de América Meridional concluido en 1775. Las dificultades con que las que chocaron, tanto el autor como su obra, fueron debidas a la división existente dentro de la Corte Española. Los diferentes grupos de poder que se reunían entorno al rey tenían opiniones distintas y encontradas sobre lo que había de representarse en el mapa. Ambos grupos diferían igualmente respecto a la administración de América del Sur.
More confidently uncertain? Teaching learners to apply Bayesian methods to make sense of scientific phenomena
Authors: Rosenberg Joshua
Published: January 2020

While analyzing data is important learning in science domains, existing tools for those learning to work with data have key limitations, particularly concerning modeling data. This early-stage research is intended to begin a line of work on students’ data analysis that is not yet widely used in K-12 learning environments, Bayesian statistical methods, with implications for how learners use evidence in science learning environments and how computational thinking is related to working with data.
Chuyên san Dạy và Học - Số 7 - Chơi và Học
Authors: Hoang Anh-Duc , Giang Dang Thanh , Le Thanh Hang  , Dieu Nguyen Thi Hai , Minh Bui Quang , Hang Pham Mai , Hoang Quynh-Anh Giang , Diep Nguyen Ngoc
Published: January 2020

Năm mới Kỷ Hợi đang gõ cửa. Tết Nguyên đán đánh dấu số thứ 7 của Dạy và Học, một hành trình chưa hẳn dài nhưng được kiến tạo bằng rất nhiều nỗ lực của các thành viên và sự ủng hộ quý giá của các thầy cô giáo cũng như cộng đồng quan tâm. Đi qua những chủ đề lớn qua các số từ 1 đến 6, trong số này Ban Biên tập Lộn xộn và Quý độc giả sẽ cùng quay lại một vấn đề căn bản trong giáo dục: Chơi và họcCác hoạt động vui chơi khuyến khích sự phát triển trí tuệ, cảm xúc, thể chất và các kỹ năng xã hội của trẻ. Thông qua các hoạt động vui chơi, trẻ nhỏ thỏa sức để dòng chảy sáng tạo, trí tưởng tượng và sự hứng thú được nuôi dưỡng. Chơi, Chơi và Chơi! và Ukulele trong trường học giới thiệu các lợi ích cụ thể của trò chơi trong lớp học và đề xuất những hình thức tổ chức trò chơi cho giáo viên để đạt được hiệu quả tối đa. Chuyên mục Quản lý giáo dục và Cải tổ giáo dục đưa ra những góc nhìn và lý thuyết để các nhà giáo dục tham khảo áp dụng
Mineralogical and Geochemical Features of Sulfide Chimneys
of the Yubileynoe Massive Sulfide Deposit (South Urals)
Authors: Tseluyko A.S. , Maslennikov V.V. , Maslennikova S.P. , Danyushevsky L.V. , Kotlyarov V.A. , Blinov I.A.
Published: January 2020

Three mineral types of hydrothermal chimneys (pyrite-chalcopyrite, pyrite-sphalerite-chalco-pyrite and chalcopyrite-pyrite-sphalerite) form a continuous mineralogical range in ores from the Yubileynoe deposit. In this range, the amount of chalcopyrite decreases, the relative amounts of sphalerite and pyrite increase, quartz is replaced by talc and calcite, telluride assemblage transits into gold-galenite-fahlore assemblage, and the contents of «high-temperature» (Bi, Te, Se, Co) and «low-temperature» (Ag, Sn, Pb) elements decrease and increase in sulfdes, respectively. Each mineral type can be compared with corresponding varieties of modern black, gray, and colorless smokers by mineral zoning, composition, ratios of Se, Te, Sn, and Ag in chalcopyrite. In higher Bi content of chalcopyrite, higher Te, Ni, Au content of colloform pyrite and low Fe and Co content of sphalerite, paleosmokers are closer to those of present-day island-arc basins.
Figures 13. Table 1. References 45.
Reduction of Aeroacoustic Sound and Aerodynamic Drag Using Porous Cover
Authors:   Ramesh Babu S, Department of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, Tamil Nadu, M Alexander , K Karthik ,   Department of Aeronautical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, Tamil Nadu, S Jeyakumar ,   Department of Aeronautical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, Tamil Nadu
Published: January 2020

The application of a porous media on square cylinders to reduce drag in cross-flow is an active research area. Be that as it may, the related stream incited sound in the encompassing flow likewise experiences decrease, an angle which has gotten less consideration. This paper exhibits a numerical strategy for coupled streamlined and aero acoustic estimations for low Mach number flow current pass a square cylinder with permeable cover. Computations are performed at a subcritical Re of 54,800 using URANS technique and FW-H acoustic analogy. The cylinder without porous cover is subjected to an incoming flow is considered for validation against measurements. A significant drag reduction and sound reduction is observed with the presence of the porous layer. Comparisons are made among the modified cylinder and its unmodified counterpart.
Heat transfer Augmentation of Gravity Assisted Multi Heat pipe Induced Heat Exchanger
Authors:   Department of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Virudhunagar, 626126, Tamil Nadu, India, Kumar P. Ram , Sivasubramanian M. ,   Department of Automobile Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Virudhunagar, 626126, Tamil Nadu, India., Kanna P. Rajesh ,   Department of Mechanical Engineering, Al Ghurair University, Dubai, United Arab Emirates., Raveendiran P. ,   Department of Mechanical Engineering, Alagappa Chettiar Government College of Engineering and Technology, Alagappa University, Karaikudi – 630003, Tamil Nadu, India.
Published: January 2020

Heat transfer augmentation of a heat exchanger with a multi-heat pipe has been investigated with the influence of gravity assistance. The working fluids used to analyse the performance are methanol and acetone. Water is used as a heat transfer fluid. In which, the analysis is carried out with the gravity-assisted angles of 0º, 45º and 90º. In this work, various parameters such as temperatures of hot water ranges 50ºC, 60ºC, 70ºC, and cold water temperature are observed as 32.5ºC throughout the investigation. Hot water mass flow rates as 40 LPH to 120 LPH with an increase of 20 LPH, cold water as 20 LPH to 60 LPH with an increase of 10 LPH. The result reveals that increase in effectiveness occurs at an angle of 0º for Acetone with 60ºC and 100 LPH is 71.5% of an increase in effectiveness is achieved than methanol for optimum said conditions.
Classifications of Pairwise Fuzzy Volterra Spaces
Authors:   Professor and Head Department of Mathematics Thiruvalluvar University Serkkadu, Vellore-632115, Tamil Nadu, India., Thangaraj G. , Chandiran V. ,   Research Scholar Department of Mathematics Thiruvalluvar University Serkkadu, Vellore-632115, Tamil Nadu, India.
Published: January 2020

The main focus of this paper is to introduce the new types of pairwise fuzzy Volterra spaces such as by introducing pairwise fuzzy residual sets in the place of pairwise fuzzy Gδ-sets in the definition of pairwise fuzzy Volterra space, a new kind of fuzzy bitopological space namely, pairwise fuzzy εr-Volterra spaces has been introduced and studied and also by introducing pairwise fuzzy pre-open sets in the place of pairwise fuzzy dense sets in the definition of pairwise fuzzy Volterra space, another kind of fuzzy bitopological space namely, pairwise fuzzy εr-Volterra spaces has been introduced and studied. Some of their characterizations and relationships with the other fuzzy bitopological spaces have been investigated and studied.
High temperature behavior of superalloy under simulating gas turbine environment
Authors:   Department ofMechanical Engineering department, Kalasalingam Academy of Research & Education, Virudhunagar Dist., Tamilnadu, India., Ganesh. D Chella , M Adamkhan. ,   Department of Mechanical Engineering department, Kalasalingam Academy of Research & Education, Virudhunagar Dist., Tamilnadu, India., Jappes JT Winowlin ,   Department of Mechanical Engineering department, Kalasalingam Academy of Research & Education, Virudhunagar Dist., Tamilnadu, India
Published: January 2020

On prolonged exposure of superalloys at elevated temperature, the surface degradation is prone to involve. In this study two nickel – based superalloys, Inconel617 and Hastelloy are the materials used to perform surface studies. The behaviors of superalloys at elevated temperatures are studied with and without salt mixture. Samples are exposed at 900° and 1000°C for a period of fifty hours. From the investigation, the cumulative mass changes per unit area are calculated with reference to the proportion of surface scale formation. The substantial role of the alloying elements is analyzed through SEM and XRD analysis. The Hastelloy has better resistance towards corrosion and oxidation resistance than Inconel617. The predominant oxides formed during the exposure at high temperature have a major contribution towards the protection of the samples.
Examination on Tribological Properties of Luffa Fiber Reinforced Polyester Composites
Authors:   Faculty of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil-626 126, India,, Kalusuraman G. , Siva I. ,   Faculty of Mechanical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil-626 126, India
Published: January 2020

In this work Tribological property of luffa fiber reinforced unsaturated polyester composites are carried out. The composites were fabricated using the compression moulding technique with optimum pressure of 150Mpa. The fabricated specimens were cut as per the ASTM standard of the wear test and ASTM G99 as followed for the entire testing of the wear. In this work, the applying load and velocity of the rotating disc was considered as a process parameter. The fiber loading was taken for the specimen to be fabricated as 30%. The test on the specimen was conducted for 10N, 20N, 30 N and velocity of 1m/s, 2m/s, 3m/s respectively. The result shows that coefficient of friction increase when increases in sliding distance.
Effect of 3d Print Layer Orientation on Tensile Properties of Poly (Lactic Acid) Polymer
Authors:   Mechanical Engineering, Rajalakshmi Institute of Technology, Chennai, Tamilnadu, India., Ramalingam Mr.P.Sethu , Mayandi Dr.K. ,   Mechanical Engineering Department, Kalasalingam Academy of Research and Education, Virudhunagar, India., Rajini Dr.N. ,   Professor, Mechanical Engineering Department, Kalasalingam Academy of Research and Education, Virudhunagar, India., Ayirilimis Prof. Nadir ,   Department of wood mechanic and forest, Cherrapasa, Istanbul University, Turkey, Rajesh Dr.S. ,   Mechanical Engineering Department, Kalasalingam Academy of Research and Education, Virudhunagar, India.
Published: January 2020

This work investigated the effect of print layer orientation on tensile properties of poly(lactic)acid (PLA) polymer. The size of PLA filament is used as 1.70mm diameter. The tensile specimen is modelled in solidworks software as per ISO-527 1BA standard dimensions for plastic materials and saved the data file as STL (Stereo Lithographic) format. The STL file is given as input to the 3D printing machine. The specimen is prepared in 45 degree positions, 90 degree positions and upright positions. The printed samples is tested in Instron universal testing machine. The maximum tensile stress is obtained in 45 degree positions based printed samples due to better load transfer along the printed layer of materials and minimum tensile stress is observed in upright samples due to poor load transformation along the materials. The print layer orientation of the materials is viewed in optical microscope analysis.
Biological Tissue Characterization using Optical Backscattering Technique to detect the Presence of Abnormalities
Authors:   Department of Biomedical Engineering, Kalasalingam Academy of Research & Education, VirudhuNagar, India., Elliot C. Jim , Anitha S. ,   Department of Biomedical Engineering, Karunya Institute of Technology & Sciences, Coimbatore, India., Akhila A. ,   Department of Biomedical Engineering, Kalasalingam Academy of Research & Education, VirudhuNagar, India., Vijayakumar R. ,   Department of Biomedical Engineering, Kalasalingam Academy of Research & Education, VirudhuNagar, India., Pradeepa R. ,   Department of Biomedical Engineering, Kalasalingam Academy of Research & Education, VirudhuNagar, India.
Published: January 2020

we are using imaging modality to observe and acquire the information from the tissue. The backscattered intensity variation depends upon the composition, color and blood flow of the tissue. The optical parameters of the tissue are determined by using serial monitor in Arduino. Thus the tissues are treated of diameter 0.1, 0.2 and 0.3cm and placed at different depth. From this method, we can diagnose the abnormalities in the skin tissue/phantom. Photon depth distribution (anisotropy) and surface intensity differs which depends on various tissues. Thus scanned in horizontal position we have to find the depth. By peak intensity analysis, we have to determine the type, location and size of the tissue variation. Backscattering of laser from the tissue is measured by using optic probe. The backscattering parameter gives some information about the tissue because the light beam gets penetrate in some existence.
Biosorption of Methylene Blue Dye from Aqueous Solutions
Authors:   Department of Biotechnology, Sree Chitra Thirunal College of Engineering, Trivandrum, Kerala, India., A. P. Abhirami , Priya Anjaly ,   Department of Biotechnology, Sree Chitra Thirunal College of Engineering, Trivandrum, Kerala, India., R. Devika ,   Department of Biotechnology, Sree Chitra Thirunal College of Engineering, Trivandrum, Kerala, India., G. Indu ,   Department of Biotechnology, Sree Chitra Thirunal College of Engineering, Trivandrum, Kerala, India., Sreekumar Nidhin ,   Accubits Invent, Accubits Technologies Inc. Trivandrum, Kerala India.
Published: January 2020

Synthetic dyes, like methylene blue, in effluents of chemical industries, are reported to be toxic with alleged carcinogenic and genotoxic consequences. Biosorption is considered as a low-cost alternative to the costly removal processes. Agricultural wastes and plant biomass and are contemplated to be low-cost candidates because they can be used without or with a minimum of processing. This work was intended to test the possibility and comparative study of different low-cost natural adsorbents [Coconut husk (H), Groundnut shell (G), Cow Dung (C) and moss (M)] for the sequestration of methylene blue dye from aqueous solution. A batch process was done to study the effects of different parameters such as contact time, pH, adsorbent dosage and initial dye concentration. Adsorption equilibrium data were represented using Langmuir, Freundlich and Temkin isotherm models. 75 % of dye removal was observed with moss, hence proves to be an effective, low-cost adsorbent.
In Silico Drug Repurposing to Target Histone-Like Protein of Streptococcus Mutans
Authors:   Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu., Marimuthu Shakti Chandra Vadhana , Rosy Joseph Christina ,   Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu., Thangamariappan Esakkimuthu ,   Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu., Sundar Krishnan ,   Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu.
Published: January 2020

Streptococcus mutans, in spite of its natural occurrence in human oral cavity, causes dental caries and rarely, in some complications, infective endocarditis. Development of vaccines or drugs to prevent or control these organisms has been under study. Histone-like protein (HLP), a nucleoid associated protein, is found essential for the survival and virulence of these pathogens. We have employed an in silico approach to specifically target the HLP of Streptococcus mutans with available approved drugs from DrugBank. Computational analysis showed conserved regions in DNA-binding domain of the S. mutans HLP and its homologues in 47-49 and 78-79 residues. The S. mutans HLP was found to be closely related within streptococcal species in phylogenetic analysis. Alanine and lysine were found to be higher in the protein which is the characteristic of histone-like proteins. The crystal structure of S. mutans HLP is similar to HLP from Mycobacterium tuberculosis despite their sequential variations and evolutionary distance. Etravirine, Abacavir, Adenosine phosphate, Flucloxacillin, Nelarabine, and Regadenoson were found to efficiently bind at the DNA binding domain of S. mutans HLP. From these results it can be concluded that these drugs can be repurposed to control streptococcal infections.
Functionalization of macrobicyclic amino cryptands with photoactive fluorophoric units for metal ion sensing application
Authors:   Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil-626126, Tamilnadu, India., Piramuthu Lakshminarayanan , Murugesan Kumaresan ,   Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil-626126, Tamilnadu, India., Jeyasingh Vanthana ,   Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil-626126, Tamilnadu, India., Lakshminarayanan Sudha ,   Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil-626126, Tamilnadu, India., Narayanan Selvapalam ,   Department of Chemistry, Kalasalingam Academy of Research and Education (Deemed to be University), Krishnankoil-626126, Tamilnadu, India.
Published: January 2020

In this report we discussed the photo physical properties of two hexaanthryl substituted cryptands, L1 and L2 respectively. Further, photophysical studies of L1 and L2 with different transition metal ions as an input are carried out to probe these molecules as metal ion sensors in solution.
Economic Designing of Modified Chain Sampling Plan under Weibull Distribution using Bayesian Approach
Authors:   Department of Mathematicss, Kalasalingam Academy of Research and Education, Krishnankoil - 626126, Tamil Nadu, India., Jeyadurga P. , Balamurali S. ,   Department of Computer Applications, Kalasalingam Academy of Research and Education, Krishnankoil - 626126, Tamil Nadu, India.
Published: January 2020

The methodology to design modified chain sampling plan with economical aspect for assuring product’s mean life under Weibull distribution is considered in this paper. Bayesian approach is employed to estimate the unknown failure probability involved in economic designing. The ratio between product’s true mean life and specified mean life is assumed to be product’s quality. The optimal parameters are chosen so that they simultaneously satisfy the risks of both producer and consumer with minimum cost using the optimization problem. In addition, different shape parameters are used in optimal parameters determination. Real life data is used to explain the execution of the proposed plan and the performance of the proposed plan is compared with other existing plan using average outgoing quality curve.
Modeling the Transport of Hydrocarbons in the Subsurface Environment with Chemical Reaction
Authors:   Department of Mathematics, Kalasalingam Academy of Research and Education, Krishnankoil, India., Hemalatha S. V. , Ratchagar Nirmala P. ,   Department of Mathematics, Annamalai University, Annamalainagar, India.
Published: January 2020

The objective of the present study is to investigate the transport of hydrocarbons with chemical reaction due to oil flow through the subsurface. The coupled nonlinear differential equations governing the flow and mass transfer are simplified using perturbation technique and solved numerically. The dimensionless velocity and concentration profiles are depicted graphically and discussed for the effects of the parameters involved.
Some Properties of Generalized Star Semi Λ-Closed Sets in Topological Spaces
Authors:   Department ofMathematics, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu, India., Matheswaran M. , Rajakumar S. ,   Department of Mathematics, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu, India.
Published: January 2020

In this article, we proposed and examined topological characters of g∗sΛ-closed, open sets. Its rapport with more generalized closed sets also inspected.
More on Coprime Irregular Graphs
Authors:   Department of Mathematics, Kalasalingam Academy of Research and Education, Krishnankoil, India., Narayanan Sankara
Published: January 2020

An k−edge-weighting of a graph G = (V,E) is a map φ: E(G) → {1,2,3,...k}, where k is a positive integer. Denote Sφ(v) is the sum of edge-weights presenting on the edges incident at the vertex v under the edge-weighting φ. An k−edge-weighting of G is coprime irregular edge-weighting of G if gcd(Sφ(u),Sφ(v)) = 1 for every pair of adjacent vertices u and v in G. A graph G is coprime irregular if G admits a coprime irregular edge-weighting. In this paper, we discuss about coprime irregular edge-weighting for some families of graphs
Contaminants of Dispersion on Groundwater by Landfill Leachate
Authors:   Department of Mathematics, Vels Instite of Science, Technology and Advanced Studies,Chennai, India., Senthamilselvi S. , Ratchagar Nirmala P. ,   Department of Mathematics, Annamalai University, Annamalainagar, India.
Published: January 2020

The major potential impacts of landfill leachate on the environment are groundwater and surface water contamination.To date, the percolation of bacteria and viruses by landfill leachate into the groundwater table poses a potential risk to public health and the environment and potential risks.This pa per deals with the study of leachate dispersion of contaminants us ing generalized dispersion techniques for solvent transport in por ous media.The porous layer interface, the slip boundary conditio ns of the beavers joseph bj are used, the governing equations are analytically solved and the expressions for speed and dispersion a re obtained and graphically presented
Sustenance: Determining the Factors for Prediction and Prediction of the Customers Willing to Wait to Shop Grocery
Authors:   Department of Business Administration, Kalasalingam Academy of Research and Education, Krishnankovil, Tamilnadu, India, Ayyamperumal Dr. R. , Arasu Dr. B. Senthil ,   Professor of Management Studies, National Institute of Technology, Tiruchirapalli, Tamilnadu, India.
Published: January 2020

In the fast moving life, people have less time for each work/task. This study focuses on knowing the factors that contribute to the buyer’s willingness to wait and shop during the opening hours in the morning. A grocery store needs to focus well on the incremental efforts on enhancing the retail service quality of grocery store that helps to sustain and retain customers. Rarely, it so happens that the buyer needs to wait during the opening hours, as there is some delay in setting-up. The objective of this research is to predicting the factors that comforts the customer to wait at the grocery store during the delay in the setup. The key variable/factor that helps to predict is identified along with the category. Analysis helps to conclude that occupation motivates a customer to wait to shop and need to be empathic with them for sustenance.