bluuebunny/crossref_metadata_2025 huggingface dataset:
A Trajectory Planning Method for Autonomous Valet Parking via Solving an Optimal Control Problem
Authors: Chen Chen , Wu Bing , Xuan Liang , Chen Jian , Wang Tianxiang , Qian Lijun
Published: November 2020

In the last decade, research studies on parking planning mainly focused on path planning rather than trajectory planning. The results of trajectory planning are more instructive for a practical parking process. Therefore, this paper proposes a trajectory planning method in which the optimal autonomous valet parking (AVP) trajectory is obtained by solving an optimal control problem. Additionally, a vehicle kinematics model is established with the consideration of dynamic obstacle avoidance and terminal constraints. Then the parking trajectory planning problem is modeled as an optimal control problem, while the parking time and driving distance are set as the cost function. The homotopic method is used for the expansion of obstacle boundaries, and the Gauss pseudospectral method (GPM) is utilized to discretize this optimal control problem into a nonlinear programming (NLP) problem. In order to solve this NLP problem, sequential quadratic programming is applied. Considering that the GPM is insensitive to the initial guess, an online calculation method of vertical parking trajectory is proposed. In this approach, the offline vertical parking trajectory, which is calculated and stored in advance, is taken as the initial guess of the online calculation. The selection of an appropriate initial guess is based on the actual starting position of parking. A small parking lot is selected as the verification scenario of the AVP. In the validation of the algorithm, the parking trajectory planning is divided into two phases, which are simulated and analyzed. Simulation results show that the proposed algorithm is efficient in solving a parking trajectory planning problem. The online calculation time of the vertical parking trajectory is less than 2 s, which meets the real-time requirement.
Evaluation of the ZWD/ZTD Values Derived from MERRA-2 Global Reanalysis Products Using GNSS Observations and Radiosonde Data
Authors: Huang Liangke , Guo Lijie , Liu Lilong , Chen Hua , Chen Jun , Xie Shaofeng
Published: November 2020

Tropospheric delay is one of the main errors affecting high-precision positioning and navigation and is a key parameter of water vapor detection in the Global Navigation Satellite System (GNSS). The second Modern-Era Retrospective analysis for Research and Applications (MERRA-2) is the latest generation of reanalysis data collected by the National Aeronautics and Space Administration (NASA), which can be used to calculate tropospheric delay products with high spatial and temporal resolution. However, there is no report analyzing the accuracy of the zenith tropospheric delay (ZTD) and zenith wet delay (ZWD) calculated from MERRA-2 data. This paper evaluates the performance of the ZTD and ZWD values derived from global MERRA-2 data using global radiosonde data and International GNSS Service (IGS) precise ZTD products. The results are as follows: (1) Taking the precision ZTD products of 316 IGS stations from around the world from 2015 to 2017 as the reference, the average root mean square (RMS) of the ZTD values calculated from the MERRA-2 data is better than 1.35 cm, and the accuracy difference between different years is small. The bias and RMS of the ZTD values show certain seasonal variations, with a higher accuracy in winter and a lower accuracy in summer, and the RMS decreases from the equator to the poles. However, those of the ZTD values do not show obvious variations according to elevation. (2) Relative to the radiosonde data, the RMS of the ZWD and ZTD values calculated from the MERRA-2 data are better than 1.37 cm and 1.45 cm, respectively. Furthermore, the bias and RMS of the ZWD and ZTD values also show some temporal and spatial characteristics, which are similar to the test results of the IGS stations. It is suggested that MERRA-2 data can be used for global tropospheric vertical profile model construction because of their high accuracy and good stability in the global calculation of the ZWD and ZTD.
Edge-Computing Architectures for Internet of Things Applications: A Survey
Authors: Hamdan Salam , Ayyash Moussa , Almajali Sufyan
Published: November 2020

The rapid growth of the Internet of Things (IoT) applications and their interference with our daily life tasks have led to a large number of IoT devices and enormous sizes of IoT-generated data. The resources of IoT devices are limited; therefore, the processing and storing IoT data in these devices are inefficient. Traditional cloud-computing resources are used to partially handle some of the IoT resource-limitation issues; however, using the resources in cloud centers leads to other issues, such as latency in time-critical IoT applications. Therefore, edge-cloud-computing technology has recently evolved. This technology allows for data processing and storage at the edge of the network. This paper studies, in-depth, edge-computing architectures for IoT (ECAs-IoT), and then classifies them according to different factors such as data placement, orchestration services, security, and big data. Besides, the paper studies each architecture in depth and compares them according to various features. Additionally, ECAs-IoT is mapped according to two existing IoT layered models, which helps in identifying the capabilities, features, and gaps of every architecture. Moreover, the paper presents the most important limitations of existing ECAs-IoT and recommends solutions to them. Furthermore, this survey details the IoT applications in the edge-computing domain. Lastly, the paper recommends four different scenarios for using ECAs-IoT by IoT applications.
Local Defect Detection in Bearings in the Presence of Heavy-Tailed Noise and Spectral Overlapping of Informative and Non-Informative Impulses
Authors: Nowicki Jakub , Hebda-Sobkowicz Justyna , Zimroz Radoslaw , Wylomanska Agnieszka
Published: November 2020

The problem of the informative frequency band (IFB) selection for local fault detection is considered in the paper. There are various approaches that are very effective in this issue. Most of the techniques are vibration-based and they are related to the cyclic impulses detection (associated with the local fault) in the background noise. However, when the background noise in the vibration signal has non-Gaussian impulsive behavior, the classical methods seem to be insufficient. Recently, new techniques were proposed by several authors and interesting approaches were tested for different non-Gaussian signals. We demonstrate the comparative analysis related to the results for three selected techniques proposed in recent years, namely the Alpha selector, Conditional Variance-based selector, and Spearman selector. The techniques seem to be effective for the IFB selection for the non-Gaussian distributed vibration signals. The main purpose of this article is to investigate how spectral overlapping of informative and non-informative impulsive components will affect diagnostic procedures. According to our knowledge, this problem was not considered in the literature for the non-Gaussian signals. Nevertheless, as we demonstrated by the simulations, the level of overlapping and the location of a center frequency of the mentioned frequency bands have a significant influence on the behavior of the considered selectors. The discussion about the effectiveness of each analyzed method is conducted. The considered problem is supported by real-world examples.
DLNR-SIQA: Deep Learning-Based No-Reference Stitched Image Quality Assessment
Authors: Ullah Hayat , Irfan Muhammad , Han Kyungjin , Lee Jong Weon
Published: November 2020

Due to recent advancements in virtual reality (VR) and augmented reality (AR), the demand for high quality immersive contents is a primary concern for production companies and consumers. Similarly, the topical record-breaking performance of deep learning in various domains of artificial intelligence has extended the attention of researchers to contribute to different fields of computer vision. To ensure the quality of immersive media contents using these advanced deep learning technologies, several learning based Stitched Image Quality Assessment methods have been proposed with reasonable performances. However, these methods are unable to localize, segment, and extract the stitching errors in panoramic images. Further, these methods used computationally complex procedures for quality assessment of panoramic images. With these motivations, in this paper, we propose a novel three-fold Deep Learning based No-Reference Stitched Image Quality Assessment (DLNR-SIQA) approach to evaluate the quality of immersive contents. In the first fold, we fined-tuned the state-of-the-art Mask R-CNN (Regional Convolutional Neural Network) on manually annotated various stitching error-based cropped images from the two publicly available datasets. In the second fold, we segment and localize various stitching errors present in the immersive contents. Finally, based on the distorted regions present in the immersive contents, we measured the overall quality of the stitched images. Unlike existing methods that only measure the quality of the images using deep features, our proposed method can efficiently segment and localize stitching errors and estimate the image quality by investigating segmented regions. We also carried out extensive qualitative and quantitative comparison with full reference image quality assessment (FR-IQA) and no reference image quality assessment (NR-IQA) on two publicly available datasets, where the proposed system outperformed the existing state-of-the-art techniques.
Mapping the Cultural Identities of Youths in Hong Kong from a Social Capital Perspective
Authors: Wu Qiaobing , Ou Ying , Jordan Lucy P.
Published: November 2020

With its unique geopolitical status and multicultural setting, Hong Kong has harbored different youth groups generated from cross-border migration with mainland China who are tied to different cultural values and identifications. This study aims to investigate how social capital embedded in the family, school, and community influences the cultural identities across three groups of Chinese youths in the educational system: local students; cross-border students (born in Hong Kong, living in the neighbor city of mainland China but attending schools in Hong Kong on daily commute); and new immigrant students (born in mainland China but living in Hong Kong for less than seven years). Using data from a cross-sectional survey with 2180 fourth- to ninth-grade students in Hong Kong, the logistic regression results suggest that family and community social capital play significant roles in shaping the cultural identity of youths. Implications of the research findings are discussed.
Gamification for Classroom Management: An Implementation Using ClassDojo
Authors: Barahona Mora Azucena
Published: November 2020

In the present educational context, active methodologies and new technologies are aspects that should be included when teaching and learning a subject area. For the education to be successful, classroom management must be considered, since problems may arise and handicap this process. In order to promote learning and reduce negative behaviors and increase positive ones, intervention on students of 1st year of ESO (compulsory secondary education) was implemented. The intervention used gamification as the educational approach and ClassDojo as the online tool to track behavior to determine the effectiveness of both elements to achieve the goal. Taking advantage of the game design principles and mechanics in the learning environment to create motivation and interest, in addition to the information and communication technologies (ICT) represented by ClassDojo, the experimental study showed the benefit of this method and app regarding the improvement of desired behaviors as well as the decrease of the disruptive ones. The implementation engaged the students and activated their behavioral development in order to display a better performance.
Using Vegetation Indices to Characterize Vegetation Cover Change in the Urban Areas of Southern China
Authors: Zhang Yu , Wang Pengcheng , Wang Tianwei , Li Jingwei , Li Zhaoxia , Teng Mingjun , Gao Yunbing
Published: November 2020

Vegetation is essential for the provision of ecosystem services. To ensure that ecosystem services are provided, urban planning must consider vegetation cover in both urban core areas and in peripheral areas. This study explored changes in vegetation cover in both urban core and peripheral areas (buffers of 5, 10 and 15 km from the urban core areas) and the relationships between these changes and urban development. To compare the differences in vegetation cover between the urban core and peripheral areas, we developed two vegetation indices, the vegetation influence strength index (VISI) and the vegetation restoration index (VRI), using normalized difference vegetation index datasets and nighttime stable light data from 50 cities in southern China. Using these two indices, we clustered the cities into four types based on their vegetation cover characteristics. The city types varied among the different regions of the study area and cities of the same type tended to occur together geographically. In addition, the two indices showed temporal changes during the study period: A downtrend from 1992 to 2000, an uptrend from 2000 to 2005, and stability from 2005 to 2013. Furthermore, in all cities, the range of the VISI was larger in the peripheral areas than in the urban core areas. However, the range of the VRI was smaller in the peripheral areas than in the urban core areas. As the distance to the urban core areas increased, the fluctuation range of both the VISI and VRI decreased, suggesting that there was less vegetation disturbance farther from the urban core areas. We also showed that changes in vegetation cover were related to differences in urbanization rates, gross domestic products, population densities, and stages of urban development among the cities. These results provide scientific support for urban planning and sustainable development in rapid urbanization areas.
Predicting the Likelihood of Using Car-Sharing in the Greater Cairo Metropolitan Area
Authors: Samaha Abdelrahman , Mostofi Hamid
Published: November 2020

This research investigates the influencing variables that affect the likelihood of choosing car-sharing if it launches in the Greater Cairo Metropolitan Area, Egypt. It adopts a binary logistic regression model to analyze the findings of an online stated preference survey. The results include 419 valid responses with different choice scenarios, which are based on the revealed preference of each respondent. The generated model shows statistical significance for age, car ownership, cost, and buffer time of the current mode of transport, travel time, and leisure trips. In addition, car-sharing experience, public transit, ride-hailing, walking, and biking also have significant effects. The highest-impact attributes are the car-sharing cost and access time, as the combination of setting the fare to 2 EGP per minute and limiting the access time of the shared vehicle to nearly 5 min achieved a likelihood of choosing car-sharing in nearly 77% of the responses.
Prevalence of Winter Ticks (Dermacentor albipictus) in Hunter-Harvested Wild Elk (Cervus canadensis) from Pennsylvania, USA (2017–2018)
Authors: Calvente Elizabeth , Pelletier Samantha , Banfield Jeremiah , Brown Justin , Chinnici Nicole
Published: November 2020

Winter ticks (Dermacentor albipictus) are an aggressive one-host tick that infest a wide-diversity of ungulates. Infestations can result in anemia, alopecia, emaciation, and death. Most notably, the winter tick has caused negative impacts to moose (Alces alces) populations in the northeast United States and Canada. Winter ticks have been identified on other cervid species, including deer (Odocoileus virginianus) and elk (Cervus canadensis), which generally results in low tick burdens and mild or no disease. Recently, however, a wild yearling bull elk in Pennsylvania was found dead as a result of severe winter tick infestation. To obtain baseline data on winter ticks in wild elk in Pennsylvania, we collected 1453 ticks from 190 hunter-harvested wild elk between 2017–2018. Of the 204 harvested elk, 94.3% (190/204) had ticks collected for this study and none of the sampled elk had evidence of winter-tick associated disease. The average tick burden was 7.7 ticks/elk and average winter tick load on all elk was 0.5. Results of this study indicate that winter ticks do infest wild elk in Pennsylvania. However, during the fall months, the tick burden is low and rarely associated with lesions. These data herein serve as a baseline to monitor winter tick populations over time.
İlkokul Öğrencilerinin Dijital Oyun Tercihlerinin Eğitsel Bir Perspektiften İncelenmesi
Authors: ÖZER Fatih
Published: November 2020

Çağımızda teknoloji hızla gelişmekte ve değişmektedir. İş hayatı, eğitim hayatı ve diğer tüm alanlarda günümüz dünyasında vazgeçilmezler arasında bulunan teknoloji, yeni nesilleri de önemli ölçüde etkilemekte ve değiştirmektedir. Teknolojinin hayatımıza bu denli girdiği günümüzde çocukların teknoloji ile küçük yaşlarda tanıştıkları, artık eskiden olduğu gibi sokaklarda oynamadıkları ve bir süre sonra teknolojiyi hayatlarının bir parçası haline getirdikleri bilinmektedir. Oyunlar, çocukları gelecek hayatlarına hazırlar. Çocuklar enerjilerini oyunlarda atar ve benzetmece gibi içgüdülerini oyunlar ile doyururlar. Tüm bu içgüdülerin çocukların gelecekteki yaşamlarının kullanım alanları olan hukuk, ticaret, eğitim, sanat ve bilim gibi alanların temelinde olduğu söylenebilir. Kuralları ve bağlayıcılığı olan oyunların birçok çeşidi vardır. Bunlardan bir tanesi, günümüz çocuklarının en çok oynadığı türlerden olan dijital oyunlardır. Dijital ortamlarda oynanan oyunlara dijital oyunlar denmektedir. Dijital oyunlar, çeşitli teknolojiler ile programlanan ve oyunculara görsel bir ortam sağlayan oyunlardır. Bu oyunlar ilk zamanlar eğlence amaçlı üretilirken günümüzde eğitim amaçlı da üretilmektedir ve eğitimde kullanılan bu tür oyunların sayısı hızla artmaktadır. Bu araştırmanın amacı ise ilkokul öğrencilerinin dijital oyun tercihlerinin eğitsel bir perspektiften incelenmesidir. Bu araştırma nicel araştırma yöntemlerinden tarama modeline göre desenlenmiştir. Araştırmanın örneklemi 2017-2018 eğitim öğretim yılında İstanbul, Ankara ve Diyarbakır illerinde bulunan devlet okullarında öğrenim gören 563 ilkokul öğrencisinden oluşmaktadır. Örneklemin belirlenmesinde kolay ulaşılabilir örnekleme yöntemi kullanılmıştır. Araştırmanın verileri araştırmacı tarafından hazırlanan veri toplama aracı ile toplanmıştır. Analiz aşamasında SPSS paket programı kullanılmış, bu kapsamda betimsel istatistiklerden faydalanılmıştır. Araştırma sonuçları; öğrencilerin en çok oynadıkları dijital oyunların eğitsel oyunlar olmadığını, ilkokul öğrencilerinin daha çok araba yarışı, kıyafet giydirme, Minecraft, savaş-silah, Tom, futbol, Subway Surfers gibi eğlence oyunlarını tercih ettiklerini göstermektedir.
Üstbiliş Stratejilerine Dayalı Dinleme Etkinliklerinin İlkokul Dördüncü Sınıf Öğrencilerinin Dinlediğini Anlama Becerilerine Etkisi
Authors: KIVRAK Seda , GİRMEN Pınar
Published: November 2020

Bu araştırmanın amacı üstbiliş stratejilerine dayalı süreç temelli dinleme etkinliklerinin ilkokul dördüncü sınıf öğrencilerinin dinlediğini anlama becerisine, dinlemeye yönelik tutumlarına olan etkisinin ve etkinliklere yönelik deney grubu öğrencilerinin görüşlerinin belirlenmesidir. Araştırmada karma araştırma deseni kullanılmıştır. Araştırmanın nicel boyutunda ön test ve son teste dayalı yarı deneysel desen kullanılmış, nicel veriler nitel verilerle desteklenmiştir. Araştırmanın çalışma grubunu Eskişehir il merkezinde bulunan bir ilkokulda öğrenim gören 49 dördüncü sınıf öğrencisinden oluşmaktadır. Deney ve kontrol grubuna uygulama öncesi ve sonrasında ön test ve son test “Dinlediğini Anlama Testi” ve “Dinlemeye Yönelik Tutum Ölçeği” uygulamıştır. Deney grubu öğrencilerinin süreç sonunda görüşünü belirlemek için öğrencilerle yarı yapılandırılmış görüşme gerçekleştirilmiştir. Araştırma sonucunda öğrencilerin “Dinlediğini Anlama Testi” ve “Dinlemeye Yönelik Tutum Ölçeği” kullanılarak gerçekleştirilen son testten aldıkları başarı puanları arasında deney grubu lehine anlamlı bir farklılık vardır. Deney grubu öğrencileriyle yapılan yarı yapılandırılmış görüşmeden elde edilen veriler doğrultusunda öğrencilerin üstbiliş stratejilerine dayalı dinleme etkinliklerine yönelik tutumlarının olumlu yönde olduğu belirlenmiştir. Bu bulgular doğrultusunda üstbiliş stratejilerine dayalı dinleme etkinliklerinin öğrencilerin dinlediği anlama becerisini geliştirdiği ve dinlemeye yönelik tutumlarını olumlu yönde etkilediği söylenebilir.
HISTORICAL ANTHROPONYMS OF THE KIN OF SAGANUD: STRATIFICATION AND DESCRIPTION (BASED ON THE CENSUS LISTS, 1830-1831. AGINSKAYA STEPPE DUMA)
Authors: Zhamsaranova R.G. , Bazarova Ts.A.
Published: November 2020

The article describes the personal names of the kin Saganud of Khori-Buryat, extracted from the funds of the State archive of the Zabaikal'skykrai. The materials of the 1830-1831 census of the aboriginal population of the Aginsk Steppe Duma of the Saganudkin are represented by the number of about 1150 historical anthroponyms. These personal names have different linguistic origins. The purpose of the article is a preliminary description in terms of the morphology of names, including their stratification by Tibetan-Mongolian and other language genesis, verifying the thesis about the diversity of the ethnic composition of the Khori-Buryat.
EXPERIENCE IN COMPILING «THE ONOMASTIC DICTIONARY OF THE 19TH -CENTURY BELARUSIAN LITERATURE»: PROBLEMS OF THE WORD-LIST CREATION AND CLASSIFICATION OF ONYMS
Authors: Senkevich N.M.
Published: November 2020

The article is devoted to lexicographic description of the proper names registered in the 19th-century Belarusian literature. The main attention is paid to classification of the onymic units and creation of the onomastic dictionary word-list. The macrostructure of the dictionary is described, some problems of dictionary compiling and ways of solving them are touched upon.
REGIONAL-CULTURAL PROPERTIES OF THE NOT OFFICIAL ANTHROPONYMS
Authors: Bakhvalova T.V.
Published: November 2020

The article is devoted to the study of the regional personal-individual nicknames, which are used in the dialect of Orel region. The specificity of the nicknames as a result of realization of semantics-derivational literary lanquage's and lexical items‘ potential.
APPROBATION OF THE NAMING'S TECHNOLOGY IN THE CREATION OF THE OFFICIAL CITY TOPONYMY
Authors: Golomidova M.V.
Published: November 2020

The article is devoted to the possibilities of using rational naming technology to create new urban toponyms. The author describes the features of the stages of name creation for urban locations. The data of creative experiment on the development of toponyms using improved naming technology are presented.
SERBIAN SAINTS HAGIOANTHROPONYMS IN SERBIAN AND RUSSIAN (STRUCTURAL AND COMPARATIVE ANALYSIS)
Authors: Levushkina R.
Published: November 2020

The paper analyzes the structure of hagioanthroponyms of Serbian saints in the Russian and Serbian languages using a comparative method. Material for analysis are the hagioanthroponyms from the calendars of the Serbian and Russian Orthodox churches. The structure and composition of these hagioanthroponyms in the two languages differ in many ways. Not all the rules for transcription of Serbian anthroponyms and other lexemes in the structure of the hagioanthroponyms in Russian are followed.
DIALECTS VOCABULARY OF THE AGRICULTURALANDFIELD FARMINGIN TOPONYMICOF SAMARA REGION
Authors: Bazhenova T.E.
Published: November 2020

The composition and meaning of dialect words, which serve as small areas of the field, forests and meadows are considered. The specifics and geography of the folk termins of agriculture and field farming in the Samara Volga region, their connection with the historical and cultural landscape of the region, is determined. It is noted that microtoponymic is an important source of information about the specifics of regional vocabulary, its links with the Russian dialect vocabulary, as well as the source for regional dictionaries.
ANALYSIS OF DIAGNOSTIC TOOLS FOR ELECTROMAGNETIC GAS NOZZLES USED IN GAS FUEL SYSTEMS ON AUTOMOTIVE TRANSPORT
Authors: Ivannikov Valerii , Nikulin Maksim , Polyakov Igor
Published: November 2020

The article analyzes the diagnostic tools used for electromagnetic injectors used in gas-fuel systems on automobile transport. Their advantages and disadvantages are considered, as well as options for their improvement within the framework of application in practical diagnostics are proposed.
ABOUT THE PRINCIPLES OF SCALE ELECTRODYNAMIC MODELING
Authors: Kolichev Sergei , Kamalova Nina
Published: November 2020

The problem of measuring the characteristics of scattered radiation solves in the cases of studying the laws of the process of scattering of radio waves, verification of the scattering characteristics of the detected object, diagnosing of the research object by the nature of the radiation scattered by it, the developing of appropriate databases of various objects of research. The article provides a rationale for a physically transparent conceptual approach for modeling scattered radiation from the object under study. As a result of the simulation, the scattering area has estimated from the Maxwell equations.
Low Anger May Balance the Blood Pressure
Authors: Srinivasan K.R , Duraichamy J
Published: November 2020

“Anger is an emotion characterized by antagonism toward someone or something you feel has deliberately done you wrong. Anger can be a good thing. It can give you a way to express negative feelings, for example, or motivate you to find solutions to problems. But excessive anger can cause problems. Increased blood pressure and other physical changes associated with anger make it difficult to think straight and harm your physical and mental health” – American Psychological Association.In common parlance, people expect all happenings as they wish. When it turns against to their wish they get strong emotion -anger.
Memórias Pós­-imperiais: Luuanda, de José Luandino Vieira, e Luanda, Lisboa, Paraíso, de Djaimilia Pereira de Almeida.
Authors: De Medeiros Paulo
Published: November 2020

O que são memórias pós-imperiais e até que ponto pode uma reflexão sobre os dois termos em causa, "pós-império" e "memória" - e aquilo que está silenciosamente implícito, ou seja, a "pós-memória" e a sua relação com os legados fantasmagóricos imperiais - nos ajudar a compreender o papel da resistência na literatura anticolonial e pós-colonial? Este ensaio aborda esta questão através do conjunto de narrativas de Luandino Vieira de 1963, Luuanda, e dois romances recentes de Djaimilia Pereira de Almeida, Esse Cabelo, de 2015 e, principalmente, Luanda, Lisboa, Paraíso, de 2018. Como conclusão sugere-se uma consideração da memória pós-imperial como uma forma de assombramento, inevitavelmente e irredutivelmente ligada à história da escravidão.
Adaptive Reweighted Minimum Vector Variance Estimator of Covariance Used for as a New Robust Approach to Partial Least Squares Regression
Authors: POLAT Esra , ALİ Hazlina
Published: November 2020

Partial Least Squares Regression (PLSR), which is developed as partial type of the least squares estimator of regression in case of multicollinearity existence among independent variables, is a linear regression method. If there are outliers in data set, robust methods can be applied for diminishing or getting rid of the negative impacts of them. Past studies have shown that if the covariance matrix is appropriately robustified, PLS1 algorithm (PLSR for one dependent variable) becomes robust against outliers. In this study, an adaptive reweighted estimator of covariance based on Minimum Vector Variance as the first estimator is used and a new robust PLSR method: “PLS-ARWMVV“ is introduced. PLS-ARWMVV is compared with ordinary PLSR and four popular robust PLSR methods. The simulation and real data application are revealed that if there are contaminated observations, proposed robust PLS-ARWMVV is robust and efficient. It generally performs better than robust PRM and good alternative for other robust PLS-KurSD, RSIMPLS and PLS-SD methods.
Operaciones críticas de ajuste y control de calidad en el sector automotriz
Authors: Jimenez-Cargua Jaime Wilson , Chávez-Cadena Marco Ivan
Published: November 2020

La investigación tuvo por objetivo determinar la relación de las operaciones criticas de ajuste para el control de calidad en CIAUTO Ambato – Ecuador. Se basó en un tipo descriptiva correlacional de Pearson con diseño no experimental transversal. La correlación al ser positiva en 0,132 indica que las variables de estudio se están relacionando linealmente, mediante un efectivo proceso de gestión continua, siendo necesario proseguir abordando los diversos aspectos que conforman tanto las operaciones críticas y control de calidad en función de elevar la mejora continua con la finalidad de incrementar la calidad y productividad de la organización. Es necesario incrementar la eficacia en planes y cronogramas, control del producto, control del proceso; con la finalidad de promover un mayor perfeccionamiento de los procesos, por medio de la aplicación de la mejora continua, requiriéndose para tal fin contar con la participación activa de todos los integrantes de la organización.
Capital intelectual como herramienta de gestión del conocimiento en cooperativa de ahorro y crédito
Authors: Coello-Paute Diego Armando , Erazo-Álvarez Juan Carlos , Narváez-Zurita Cecilia Ivonne , Álvarez-Gavilanes Juan Edmundo
Published: November 2020

El objetivo de investigación se fundamenta en analizar el capital intelectual como herramienta de gestión del conocimiento en cooperativa de ahorro y crédito Erco Ltda. Fue de alcance descriptivo de carácter transversal, el universo poblacional estuvo conformado por un total de 143 colaboradores administrativos, servicio directo con el cliente. La cooperativa de ahorro y crédito Erco Ltda. cuenta con un plan de capacitaciones, sin embargo, este no es de conocimiento de sus empleados, lo cual recae en la falta de preparación de herramientas tecnológicas y una planificación clara del impacto productivo que puede acarrear. Ante los grandes cambios que tiene la cooperativa en la actualidad los funcionarios deben desarrollar nuevas habilidades como destrezas para poder adaptarse a estos cambios tecnológicos y de innovación, pero estas habilidades deben ser desarrolladas con una correcta inversión realizada por el mando jerárquico superior a todas sus alas del negocio.
Marketing experiencial e ingresos del sector industrial de la ciudad de Cuenca
Authors: Gavilanez-Espinoza Marco Vinicio , Rivera-Costales José Alberto , Boza-Aguirre Joffre Edgar Ivonne , Vásquez-Erazo Edwin Joselito
Published: November 2020

La investigación tiene por objetivo analizar el marketing experiencial y los ingresos del sector industrial por medio de la empresa Lácteos San Antonio en la ciudad de Cuenca-Ecuador. Se basó en un tipo descriptiva no experimental transversal. La empresa debe trabajar en publicidad que genere gran impacto y estimule los sentimientos en los consumidores, la falta de posicionamiento de productos varios de la empresa lácteos san Antonio, radica a la falta de estrategias de marketing, lo cual radica en la falta de estrategias de marketing los productos de la empresa tienen cierta dificultad de posicionamiento, por cuanto los consumidores prefieren otras marcas ya sea por su calidad o por su precio, esto se determinó por la investigación realizada, por cuanto existe gran competencia de estos productos.
Knowledge management and intellectual capital in product development - financial services
Authors: Andrade-Vargas Hans Fabian , Erazo-Álvarez Juan Carlos , Narváez-Zurita Cecilia Ivonne , Torres-Palacios Mireya Magdalena
Published: November 2020

El objetivo de la investigación estuvo enfocado en analizar la calidad de gestión del conocimiento y capital intelectual en el grupo tecnológico Banco del Austro del Ecuador. Se fundamentó desde una perspectiva descriptiva con diseño de campo no experimental transversal. La importancia del capital intelectual se basa en que todas las organizaciones se han vuelto mucho más competitivas y debido a esto han nacido empresas que han tomado gran importancia en el mercado financiero. Para llegar a ser una organización líder es necesario sacar el máximo de provecho al valor que se encuentra en el capital intelectual. Las directrices actuales obligan a incluir al conocimiento como un recurso económico, se ha transformado en un activo intangible que incide en nuestra actualidad en el funcionamiento correcto de las empresas, emprendimientos y proyectos, el factor inteligencia o factor conocimiento tiene que ser plenamente identificado y medido.
Productividad laboral en la Dirección Distrital del Ministerio de Transporte y Obras Públicas del Cañar
Authors: González-Tenemaza Diana Alexandra , Quinteros-Cortzar Marcos Patricio , Ordoñez-Laso Ana Luisa-del-Rocío , Torres-Palacios Mireya Magdalena
Published: November 2020

La investigación tuvo por objetivo analizar la productividad laboral en la Dirección Distrital del Ministerio de Transporte y Obras Públicas del Cañar – Ecuador. Metodológicamente se basó en un tipo descriptiva con diseño no experimental de campo, siendo el universo poblacional constituido por la totalidad de servidores y trabajadores de la Dirección Distrital del Ministerio de Transporte y Obras Públicas del Cañar, es decir 61 personas que se encuentran prestando sus servicios en la institución. La innovación de los recursos disponibles mediante la implementación de nueva tecnología, sistematización de los procesos y constante capacitación de los servidores fortalecen la satisfacción de los usuarios y la imagen institucional a través del tiempo. La herramienta diseñada es fundamental para medir si el desempeño de los servidores públicos está acorde a las planificaciones departamentales, sus resultados pueden ser presentados a través de informes a los niveles directivos.
Crédito tributario de IVA en el sector manufacturero y su impacto en la liquidez empresarial
Authors: Durán-Cuesta Marcela Viviana , Bonilla-Carchi Sonia Marlene , Torres-Negrete Azucena
Published: November 2020

El objetivo de la presente investigación consiste en diseñar una guía para la determinación del crédito tributario de IVA en las empresas del sector manufacturero que permita el mejoramiento de su liquidez a corto plazo. El tipo de investigación fue descriptivo con diseño no experimental transversal, por cuanto se trabajó con los estados financieros de ciertas empresas manufactureras de la ciudad de Cuenca, sin realizar manipulación de las variables de estudio. Se observa que las adquisiciones de servicios que son sujetas a crédito tributario en una empresa manufacturera tienen mayor inconveniente para la distribución inequívoca en las producciones con distintas tarifas, los casos más comunes de compras por servicios y que tienen esa dificultad son los gastos de seguridad y limpieza. Se realizó una guía para la determinación del crédito tributario del IVA el mismo que contribuye a un eficiente pago de impuestos.
Retos e implicaciones de la aplicación del lenguaje XBRL en la economía popular y solidaria
Authors: Noblecilla–Ortiz Edison Roberto , Enriquez-Jaramillo Edin Rodrigo , Moreno-Narváez Verónica Paulina
Published: November 2020

El objetivo fue diseñar un proyecto de desarrollo de la taxonomía XBRL en las empresas productoras del sector no financiero de la economía popular y solidaria para la edificación de una estructura de costos y determinación de precios justos conforme a lo dispuesto por la Ley Orgánica de Regulación y Control del Poder de Mercado. De tipo descriptiva. Los resultados reflejaron que en el 41%  de empresas consultadas emiten  estados financieros apoyados en un nivel alto por las herramientas tecnológicas, y tan solo un 13% mencionan que no cuentan con herramientas tecnológicas para la generación de estados financieros. El lenguaje XBRL permitirá a las cooperativas, asociaciones y comunitarios del sector no financiero popular y solidario etiquetar datos financieros para procesar y compartir datos de manera eficiente, de esta forma se logrará generar información uniforme relacionada con los costos de producción y determinación de precios justos.
Gestión y control interno en las Juntas Administradoras de Agua Potable del cantón La Troncal
Authors: Ordóñez-Almeida Hamilton Gabriel , Moreno-Narváez Verónica Paulina , Díaz-Córdova Jaime Fabián
Published: November 2020

El objetivo fue diseñar un sistema de gestión y control en las Juntas Administradoras de Agua Potable del cantón La Troncal, para disminuir el índice de cartera vencida. De tipo descriptiva. Se determinó que el 91% de las Juntas Administradoras de Agua Potable mantienen valores vencidos por más de 3 meses y tan solo el 9% de las organizaciones conservan su cartera vencida en niveles adecuados. EL sistema de gestión y control propuesto está basado en el COSO III, con sus diferentes componentes, estos permitirán a las organizaciones alcanzar el cumplimiento de los objetivos y optimizar los recursos económicos, el control interno involucra a todo el personal de la organización, además, se basa en la implementación de un código de ética y manual de funciones, estos deben ser socializados a todos los funcionarios para garantizar la seguridad razonable de los activos a fin de reducir los riesgos empresariales.
Gestión contable de propiedad, planta y equipo bajo estándares internacionales en compañías de transporte turístico
Authors: Ortiz-Jara Daysi Yessenia , Espinoza-Pillaga Héctor , Moreno-Narváez Verónica Paulina
Published: November 2020

El objetivo de la presente investigación es proponer un sistema de gestión contable óptimo de propiedad, planta y equipo para el sector de transporte terrestre turístico del Azuay. De tipo descriptiva no experimental. Un 72.7% de las compañías no disponen de un manual de control interno donde detalle de manera sistemática y ordenada cada uno de los procesos de las distintas operaciones con los responsables del cumplimiento de las políticas contables establecidas. Contar con un modelo de gestión contable de propiedad planta y equipo en el sector del transporte sirve como guía al profesional contable durante la ejecución de su trabajo en la compañía, por este motivo la propuesta se realiza con base a procesos y detalla cada una de las actividades, sus responsables, así como, modelos de registros contables y también se propone formatos de documentos que dan soporte legal para cada uno de los procesos realizados.
ASSOCIATION OF PLATELET-DERIVED MICROVESICLES WITH HIGH ON-TREATMENT PLATELET REACTIVITY IN CONVALESCENT ISCHEMIC STROKE PATIENTS TREATED WITH ACETYLSALICYLIC ACID
Authors: Rosińska Justyna , Maciejewska Joanna , Narożny Robert , Kozubski Wojciech , Łukasik Maria
Published: November 2020

Introduction: Elevated concentrations of platelet-derived microvesicles are found in cerebrovascular diseases. The impact of acetylsalicylic acid on these microvesicles remains inconsistent, despite its well-established effect on platelet aggregation. High residual platelet aggregation is defined as high on-treatment platelet reactivity, while “treatment failure” is the occurrence of vascular events despite antiplatelet treatment.
The aim of this study was to determine whether the antiaggregatory effect of acetylsalicylic acid correlates with platelet-derived microvesicles in convalescent ischaemic stroke patients and cardiovascular risk factor controls as well as to evaluate the association between high on-treatment platelet reactivity and recurrent vascular events with the studied platelet-derived microvesicle parameters.
Materials and methods: The study groups consisted of 76 convalescent stroke patients and 74 controls. Total platelet-derived microvesicles, annexino-positive microvesicles
number, and platelet-derived microvesicles with surface expression of proinflammatory (CD40L, CD62P, CD31) and procoagulant (PS, GPIIb/IIIa) markers were characterized
and quantified using flow cytometry. Cyclooxygenase-1-specific platelet responsiveness, with whole blood impedance platelet aggregation under arachidonic acid stimulation and the serum concentration of thromboxane B2, were evaluated.
Results: Neither acetylsalicylic acid intake nor modification of its daily dose caused statistically significant differences in the studied microvesicle parameters. Additionally, no statistically significant differences in the studied microvesicle parameters were revealed between high on-treatment platelet reactivity and non-high on-treatment platelet reactivity subjects in either study subgroup. However, elevated concentrations of PAC-1+/CD61+, CD62P+/CD61+ and CD31+/CD61+ microvesicles were found in stroke patients with treatment failure, defined in this study as a recurrent vascular events in a one-year follow-up period.
Conclusions: This study revealed no relationship between circulating microvesicle number and platelet aggregation. The procoagulant and proinflammatory phenotype of
circulating platelet-derived microvesicles might contribute to acetylsalicylic acid treatment failure.
ACUTE KIDNEY INJURY IN ELDERLY PATIENTS
Authors: Kobus Grażyna , Małyszko Jolanta , Bachórzewska-Gajewska Hanna
Published: November 2020

Introduction: In the elderly, impairment of kidney function occurs. Renal diseases overlap with anatomic and functional changes related to age-related involutionary processes.
Mortality among patients with acute renal injury is approximately 50%, despite advances in treatment and diagnosis of AKI.
The aim: To assess the incidence of acute kidney injury in elderly patients and to analyze the causes of acute renal failure depending on age.
Materials and methods: A retrospective analysis included medical documentation of patients hospitalized in the Nephrology Clinic during the 6-month period. During this
period 452 patients were hospitalized in the clinic. A group of 77 patients with acute renal failure as a reason for hospitalization was included in the study.
Results: The prerenal form was the most common cause of AKI in both age groups. In both age groups, the most common cause was dehydration; in the group of patients up to 65 years of age, dehydration was 29.17%; in the group of people over 65 years - 43.39%. Renal replacement therapy in patients with AKI was used in 14.29% of patients. In the group of patients up to 65 years of age hemodialysis was 16.67% and above 65 years of age. -13.21% of patients. The average creatinine level in the group of younger patients at admission was 5.16 ± 3.71 mg / dl, in the group of older patients 3.14 ± 1.63 mg / dl. The size of glomerular filtration GFR in the group of younger patients at admission was 21.14 ± 19.54 ml / min, in the group of older patients 23.34 ± 13.33 ml / min.
Conclusions: The main cause of acute kidney injury regardless of the age group was dehydration. Due to the high percentage of AKI in the elderly, this group requires more
preventive action, not only in the hospital but also at home.
CORRECTION OF ADIPOCYTE SECRETION DISORDERS IN PATIENTS WITH NON-ALCOHOLIC FATTY LIVER DISEASE WITH OVERWEIGHT AND OBESITY
Authors: Pivtorak Kateryna V. , Shevchuk Natalia A. , Pivtorak Natalia A. , Fedzhaga Iryna V.
Published: November 2020

Introduction: The attention of scientists from many countries is focused on hormonal substances - adipokines at the present time. Lowering the level of the hormone adiponectin plays a central role in the development of obesity and cardiovascular disease in humans.
The aim of the work is to determine the effect of complex therapy of thiotriazolin and L-lysine escinate on adipocyte secretion indices in patients with non-alcoholic fatty liver
disease (NAFLD) with overweight and obesity.
Materials and methods: 135 patients with overweight and obesity were examined, 46 of which were overweight (BMI-25-29.9 kg / m2), 34 were obesity grade I (BMI-30-34.9
kg / m2), 20 - Obesity II degree (BMI-35-39.9 kg / m2). 35 patients had normal body mass (BMI 18-24.9 kg / m2). We also examined 20 practically healthy persons. The age of the examinees varied, the median age was 55 years (intercourt scale Q1-Q3 from 40 to 61 years). The verification of the diagnosis of NAFLD was conducted in accordance withthe recommendations of the Unified Clinical Protocol.
Results: The additional use of thiotriazolin and L-lysine escinate significantly influenced the adiponectin concentration level. Compared with the period before treatment, the
adiponectin level increased in patients with overweight and obesity in 1,6 times (p <0.05). Compared to baseline, the adiponectin content in patients with NAFLD increased by 24.6-27.6% (p <0.05). Also, the level of leptin decreases significantly in patients with overweight and obesity (p <0.05).
Conclusions: Integrated therapy with thiotriazolin and L-lysine escinate is an effective way to normalize the level of adipokines in patients with NAFLD with overweight and obesity.
ENVIRONMENTAL AND OCCUPATIONAL HAZARDS OF METAL NANOCOMPOUNDS PRODUCTION AND APPLICATION: HYGIENIC, CLINICAL AND TOXICOLOGICAL ASPECTS
Authors: Yavorovskiy Oleksandr , Omelchuk Sergii , Sokurenko Lyudmyla , Zinchenko Tetyana , Solokha Nina , Aleksiichuk Vasyl , Brukhno Roman
Published: November 2020

Introduction: Nanometals are the most common nanoobjects, used nearly in all industrial branches. Considerable advances in the nanotechnological production have led to progressive use of nanomaterials in industry, though occupational safety of the nanoindustry staff is insufficiently studied.
The aim: Estimation of labor safety during production of metal nanoparticles for the purpose of defining necessary and efficient preventive measures.
Materials and methods: The personnel of the hygienic departments of the O.Bogomolets National medical university have conducted numerous physiological, hygienic, biochemical, morphological and toxicological studies. The scientists have studied and revealed hazardous workplace factors of various metal nanoparticle production technologies, particularly those of metal nanoparticles: nanosilver, titanium nitride, chromium disilicide, lead sulphide, etc.
Results and conclusions: The authors have developed method of the occupational exposure metal nanoparticles exposure air control, assessed and analyzed health of the personnel engaged in production of the nanometals. The paper contains data of the blood cells functional activity assessment, with the detected possible molecular nanoparticles toxicity mechanisms due to the altered gene expression. The authors have studied effect of nanoaerosols onto the laboratory rats respiratory organs, evaluated their blood biochemical characteristics, liver lipid content of fatty acids as well as defined morpho-functional hepatic transformations of the laboratory animals which underwent lead sulfide nanoparticles treatment.