bluuebunny/crossref_metadata_2025 huggingface dataset:
Mejora de la gestión de administración de registros para reducir los recursos y tiempo de atención al cliente
Authors:   , Agurto Marzullo Melissa Valeria
Published: April 2021

En esta investigación se ha seleccionado el área de Administración de Registros de un operador logístico cuyo objetivo del área es brindar soporte a las áreas del core del negocio, a través de la creación de documentos de compra en el sistema SAP, para la adquisición de un bien o servicio. Sin embargo, esta área presenta una inadecuada gestión y asignación de recursos que estaría perjudicando la continuidad de las áreas usuarias por demoras en el tiempo de atención y generando costos adicionales a la empresa. Asimismo, como parte de la investigación se realizaron entrevistas a las áreas usuarias (clientes internos) corroborando la insatisfacción en cuanto a la efectividad del área seleccionada. En tal sentido, el desarrollo de esta tesis tiene como propósito la optimización del tiempo de atención y recursos de Administración de Registros aplicando técnicas y herramientas de eficiencia y mejora continua de la ingeniería: Diagrama de Ishikawa (causa – efecto), diagrama de flujo y medición del trabajo (estudio de tiempos). En adición, se realizará el cálculo de la cantidad del personal que se requiere para cubrir la demanda mensual, mediante el cálculo de un equivalente a tiempo completo (FTE). Producto del análisis y resultados de las técnicas aplicadas se presentará la comparación de la situación actual versus la propuesta como estrategia de mejora.
Actitud hacia el uso de las TICS y desempeño autopercibido en docentes de Lima en confinamiento por Covid-19
Authors:   , Choquecota Quinta Karina , Quispe Livias Escarle Jomeine
Published: April 2021

La presente investigación tuvo como objetivo relacionar la actitud hacia el uso de las TICs y el desempeño autopercibido en docentes de Lima en confinamiento por COVID-19. La muestra estuvo compuesta por 69 docentes de Educación Básica Regular de Lima Metropolitana (78.3% mujeres) con edades comprendidas entre 24 y 63 años (M= 45.3, DE= 9.44). Se usó la Escala de actitud: uso de Tecnologías de Información y Comunicación (TIC) en la enseñanza, compuesta por tres dimensiones actitudinales: cognitivo, afectivo y conductual. Para medir desempeño docente se usó el Autoreporte del desempeño docente que contiene tres dimensiones: evaluación del desempeño en el aula, autoevaluación de las labores en el ámbito escolar e interacción con los alumnos. Los resultados evidencian una moderada, positiva y significativa relación entre la actitud hacia el uso de las TICs y evaluación de desempeño en el aula (r = .70; p < .05) e interacción con los estudiantes (r = .51; p < .05), por el contrario, no se evidenció una relación positiva entre la actitud hacia el uso de las TICs y la autoevaluación de las labores escolares (r = -.42; p < .05), asimismo con sus dimensiones. Se concluyó la existencia de una asociación baja entre la actitud hacia el uso de las TICs y el desempeño autopercibido en docentes, quienes han laborado en confinamiento por COVID-19 durante el periodo escolar 2020.
Bienestar psicológico y calidad de vida profesional en miembros de la Policía Nacional del Perú en pandemia por Covid-19
Authors:   , Trujillo Naupari Mariella Jesús
Published: April 2021

El presente estudio tuvo como objetivo analizar la relación entre el bienestar psicológico y calidad de vida profesional en miembros de la Policía Nacional del Perú en pandemia por COVID-19. Para ello se contó con la participación de 133 miembros de la PNP entre los 20 y 30 años, que laboraban en distintos distritos de Lima Metropolitana, de los cuales 7 (7.52%) fueron mujeres y 123 (92.48%) fueron varones. Siguiendo un diseño de investigación de tipo correlacional-simple, y adicionalmente se analizó comparativamente a los participantes con y sin diagnóstico de COVID-19, asimismo el muestreo utilizado fue el no probabilístico por conveniencia. Se utilizó la Escala Bienestar Psicológico para adultos (EBP-A), diseñada por Casullo (2002) y validada en Perú por Domínguez (2014), y la Escala de Calidad de Vida Profesional (CVP-35) elaborada por Cabezas (1998) y adaptada en Perú por Grimaldo y Reyes (2013). En cuanto, a los análisis estadístico se hizo uso de la R de Pearson y de la T de Student, evidenciando que no existe una correlación significativa entre las variables en cuestión, con respecto al análisis comparativo se encontró que la ausencia de asociación entre las variables de estudio y los grupos; sin embargo, se tomó en cuenta el insignificante tamaño del defecto para llevar a cabo las conclusiones de la investigación.
Sweden is Increasingly Loosing its Peculiarity (On Elections of 2010)
Authors: Grishin I.
Published: April 2021

The article analyses results of Swedish parliamentary elections in September 2010. The author regards them as another manifestation of the fact that Sweden is losing peculiarity of its social development model. This is a result of the end of an era of two-block party structure of the Riksdag (left and right centers) and of the domination of Social Democrats in the political life of the country. The new third political force – the party of Swedish Democrats which strongly opposes the other culture immigration – is detail regarded.
Russia and EU: Baltic Potential of Economic Integration
Authors: Simonyan R.
Published: April 2021

The author shows the role of Baltic Sea region in the economic integration of Russia and the European Union. It is concluded that formation of a new Hanseatic League can become the best format for promoting this process.
National Competitiveness, Global Equilibrium and International Currency System
Authors: Kuz'min D.
Published: April 2021

In article the fundamental bases of formation of balance in world economy are investigated. For this purpose the author applies the device of the analysis of national competitiveness to its two subjects – to the country – emitter of reserve currency and “other world”. Long-term structural shifts in world economy and evolution of world currency system throughout last 60 years are in parallel considered. In the course of the analysis the author gives special attention to factors of consumption and import of the country-emitter of reserve currency and a level of development of the commodity markets of key economies of “other world” – European, Japanese and Chinese.
Once More about Proponents of Union State
Authors: Shishkov Y.
Published: April 2021

This is a response to the publication of the article А. Michailenko (“MEMO Journal”, 2002-11) devoted to the problems that hinder the development of the Union State Russia–Belarus.
Political Modernization of China (Part I)
Authors: Irishin G.
Published: April 2021

This publication represents the conclusions of the regular academic seminar “Modern problems of development” conduced in the IMEMO’s Center of the problems of development and modernization. The problems of power-sharing, the specifics of the ideocratic and mobilization society, correlation between reforms and modernization, the traditional and the modern, authoritarianism and democracy, etc. are examined against the background of the realities of the historic process of political reform in China.
“Markovićeva stranka”
Authors: Filipović Vladimir
Published: April 2021

U članku se prati politička stranka Savez reformskih snaga Jugoslavije koju je‎ u srpnju 1990. osnovao posljednji predsjednik Saveznog izvršnog vijeća Jugoslavije‎ Ante Marković. Stranka je bila politička akcija kojom je Ante Marković‎ nastojao kapitalizirati vlastitu popularnost i dobiti politički legitimitet‎ u demokratskom sustavu. Prikazuje se organiziranje i djelovanje stranke od‎ osnivanja do sudjelovanja na izborima u četiri jugoslavenske republike 1990.‎ – Bosni i Hercegovini, Srbiji, Crnoj Gori i Makedoniji. Pažnja je posvećena‎ najvažnijim aspektima programa stranke – tržišnoj ekonomiji i očuvanju jugoslavenske‎ države. Uz to analiziraju se kritike različitih političkih protivnika‎ širom Jugoslavije upućene stranci. Dodatno se analizira neuspješno sudjelovanje‎ Saveza reformskih snaga Jugoslavije na prvim demokratskim izborima‎ 1990. Zaključuje se kako je stranka u izbornim aktivnostima podbacila u približavanju‎ nižim slojevima društva i nije uspjela ostvariti značajniji izborni‎ rezultat protiv nacionalnih stranaka. Za potrebe ovoga članka korištena je dostupna‎ znanstvena i memoarska literatura te opsežni novinski izvori.‎
Non-Ionizing Millimeter Waves Non-thermal Radiation of Saccharomyces Cerevisiae – Insights and Interactions.
Authors: Barbora Ayan , Rajput Sailendra , Komoshvili Konstantin , Levitan Jacob , Yahalom Asher , Liberman- Aronov Stella
Published: April 2021

Nonionizing millimeter-waves (MMW) interact with cells in a variety of ways. Here the inhibited cell division effect was investigated using 85-105 GHz MMW irradiation within the ICNIRP (International Commission on Non-Ionizing Radiation Protection) non-thermal 20 mW/cm2 safety standards. Irradiation using a power density of about 1.0 mW/cm2 , SAR over 5-6 hours on 50 cells/μl samples of Saccharomyces cerevisiae model organism resulted in 62% growth rate reduction compared to the control (sham). The effect was specific for 85-105 GHz range, and was energy and cell density dependent. Irradiation of wild type and Δrad52 (DNA damage repair gene) deleted cells presented no differences of colony growth profiles indicating non-thermal MMW treatment does not cause permanent genetic alterations. Dose versus response relations studied using a standard horn antenna (~1.0 mW/cm2) and compared to that of a compact waveguide (17.17 mW/cm2) for increased power delivery resulted in complete termination of cell division via non-thermal processes supported by temperature rise measurements. We have shown that non-thermal MMW radiation has potential for future use in treatment of yeast related diseases and other targeted biomedical outcomes.
Are Three Weeks of Oral Anticoagulation Sufficient for Safe Cardioversion in Atrial Fibrillation?
Authors: Naydenov Stefan , Manov Emil , Runev Nikolay
Published: April 2021

Background: Patients with atrial fibrillation (AF), lasting >48 h, considered for cardioversion, are recommended ≥3 weeks of oral anticoagulation before sinus rhythm restoration because of high risk of development of left atrial thrombosis (LAT) and stroke. However, the optimal duration of anticoagulation in the presence of overt LAT is unknown. Methods: An open-label study, aiming to investigate the prevalence of spontaneous echo con-trast (SEC) and LAT before and after 3 weeks of direct oral anticoagulant (DOAC) treatment. We included 51 consecutive patients (50.9% males), mean age 69.3±7.4 years with paroxys-mal/unknown duration of AF, considered for cardioversion, who agreed to have transesophage-al echocardiography at enrollment and 3 weeks later. Results: At baseline SEC was present in 26 (50.9%) and LAT in 10 (19.6%) of 51 patients. After 3 weeks on DOAC, SEC persisted in 12 (25.0%) and LAT in 7 (14.5%) of 48 patients, p<0.05 vs base-line. Factors, associated most strongly with persistence of SEC/LAT were left atrial appendage (LAA) emptying velocity <20 cm/s (OR=2.82), LAA lobes >2 (OR=1.84) and indexed left atrial volume ≥34 ml/m2 (OR=1.37). Conclusions: The recommended minimal period of 3 weeks of oral anticoagulation lead to SEC/LAT resolution in 47% of our patients. To our opinion, LA/LAA morphology and function should be taken into account when determining the duration of DOAC treatment before planned cardioversion.
Extensive Entropy from Unitary Evolution
Authors: Huang Yichen
Published: April 2021

In quantum many-body systems, a Hamiltonian is called an ``extensive entropy generator'' if starting from a random product state the entanglement entropy obeys a volume law at long times with overwhelming probability. We prove that (i) any Hamiltonian whose spectrum has non-degenerate gaps is an extensive entropy generator; (ii) in the space of (geometrically) local Hamiltonians, the non-degenerate gap condition is satisfied almost everywhere. Specializing to many-body localized systems, these results imply the observation stated in the title of Bardarson et al. [PRL 109, 017202 (2012)].
Social Security Enrollment as an Indicator of State Fragility and legitimacy: A Field Experiment in Maghreb Countries
Authors: Merouani Walid , El Moudden Claire , Hammouda Nacer Eddine
Published: April 2021

State legitimacy and effectiveness could be seen by the way to deliver welfare to citizens to mitigate social grievances, that could eventually lead to conflicts (Kivimäki, 2021). Social security systems in Maghreb countries are quite similar in their architecture and aims to provide social insurance to all the workers in the labor market. However, they suffer from the same main problem: the low rate of enrollment of workers. Many workers (employees and self-employed) work informally without any social security coverage. The issue of whether informal jobs are chosen voluntarily by workers or as a strategy of last resort is controversial. Many authors recognize that the informal sector is heterogeneous and it is made up of workers who voluntary choose it and others who are pushed inside because of entry barriers to the formal sector (Günther & Launov, 2012). Using the SAHWA survey and discrete choice models, this article confirms the heterogeneity of the informal labor market in three Maghreb countries: Algeria, Morocco, and Tunisia. Furthermore, this article highlights the profiles of workers who voluntarily choose informality, which is missing from previous studies. Finally, this article proposes policy recommendations in order to extend social security to informal workers and to include them in the formal labour market.
Solvent-Induced Hysteresis Loop in Anionic Spin Crossover (SCO) Isomorph Complexes
Authors: Cuza Emmelyne , Benmansour Samia , Cosquer Nathalie , Conan Francoise , Gómez-García Carlos J. , Triki Smail
Published: April 2021

Reactions of Fe(II) with the tris-(pyridin-2-yl)ethoxymethane (py3C-OEt) tripodal ligand in presence of the pseudohalide ancillary NCE- (E = S, Se, BH3) ligands led to a series of three mononuclear complexes formulated as [Fe(py3C-OEt)2][Fe(py3C-OEt)(NCE)3]2·2CH3CN, with E = S (1), BH3 (2) and Se (3). Single crystal characterizations (complexes 1-2) and X-ray powder diffraction (complexes 1-3) reveal monomeric isomorph structures formed by the spin crossover (SCO) anionic [Fe(py3C-OEt)(NCE)3] complex, associated with the low spin (LS) cationic [Fe(py3C-OEt)2]2+ complex and two solvent acetonitrile molecules. In the [Fe(py3C-OEt)2]2+ cation, the Fe(II) is coordinated by two py3C-OEt tridentate ligands, while the [Fe(py3C-OEt)(NCE)3] anion displays a hexacoordinated environment involving three N-donor atoms of one py3C-OEt ligand and three nitrogen atoms arising from of the three (NCE) coligands. The magnetic studies show the presence of gradual SCO behavior for the three complexes: a one-step transition around 205 K for 1 and two step-transitions for compounds 2 and 3, centred at 245 K and 380 K for 2, and at 170 K and 298 K for 3. The magnetic behaviors of complexes 1 and 2 remain unchanged when heating up to 500 K, while complex 3 shows significant changes which are caused by the crystallisation solvent loss above room temperature.
Dysphagia Screening Protocol for Acute Stroke Patient: A Literature Review
Authors: Mulyatsih Enny , Glorino Pandin Moses
Published: April 2021

Background: Nearly two-thirds of acute stroke patients have dysphagia. Dysphagia is difficulty to swallow food or liquids. Early detection of dysphagia is crucial in stroke patients as a result of increased morbidity and mortality due to malnutrition and respiratory tract infections. Aim: Our purpose was to conduct a literature review of dysphagia screening for stroke patient. Methods: We used the bolean operator to search articles of “or” and “and” with the key words were "Dysphagia" or “Screening”, AND "Stroke" or Acute Stroke” AND "Nursing". Data based used were Scopus, Proquest and Science Direct with inclusion criteria using full text in English which published from 2019 to 2021. We obtained 240 articles and then we screened by reading the main focus of articles with paying attention to the topics and the suitability of article content.Result: Twenty five publications relating to dysphagia screening met the inclusion criteria. There are five methods of dysphagia screening performed by nurses or other health workers: 1) a simple Questionnaire Test (4QT) method; 2) Water Swallow Test (WST) method; 3) Bed Side Screening Tool for Dysphagia (BSTD) method; 4) Volume Viscosity Swallow Test (V-VST) method; 5) EAT-10 method.Conclusion: screening is the first step in the identification of swallowing impairment or dysphagia of stroke patient. Dysphagia is an independent predictor of poor patient outcome and prolonged recovery time. Nurse has an important role to conduct a screening and must ensure that the selected tools has high reliability and concurrent validity. Key Words: Dysphagia, Nursing, Screening, Stroke
Tourist Route Optimization in the Context of COVID-19 Pandemic
Authors: Păcurar Cristina Maria , Albu Ruxandra Gabriela , Păcurar Victor Dan
Published: April 2021

The paper presents an innovative method for tourist route planning inside a destination. The necessity of reorganizing the tourist routes within a destination comes as an immediate response to the Covid-19 crisis. The implementation of the method inside tourist destinations can be an important advantage in transforming a destination into a safer destination in times of Covid-19 and post-Covid-19. The existing trend of shortening the tourist stay length has been accelerated while the epidemic became a pandemic. Moreover, the wariness for future pandemics has brought to the spotlight the issue of overcrowded attractions inside a destination at certain moments. The method proposed in this paper proposes a backtracking algorithm, more precisely an adaptation of the travelling salesman problem. The method presented aims to facilitate the navigation inside a destination and to revive certain less-visited sightseeing spots inside a destination while facilitating the social distancing measures imposed by Covid-19.
Spectral Shaping Based via IntegratedCoupled Sagnac Loop Reflectors in a Self-Coupled Nanowire
Authors: Arianfard Hamed , Wu jiayang , juodkazis saulius , Moss David
Published: April 2021

We propose and theoretically investigate integrated photonic filters based on coupled Sagnac loop reflectors (SLRs) formed by a self-coupled wire waveguide. By tailoring coherent mode interference in the device, three different filter functions are achieved, including Fano-like resonances, wavelength interleaving, and varied resonance mode splitting. For each function, the impact of device structural parameters is analyzed to facilitate optimized performance. Our results theoretically verify the proposed device as a compact multi-functional integrated photonic filter for flexible spectral shaping.
Productive Capacities, Economic Growth and Economic Growth Volatility in Developing Countries: Does Structural Economic Vulnerability Matter?
Authors: Gnangnon Sena Kimm
Published: April 2021

Recent years' global shocks (e.g., the 2008 financial crisis and the COVID-19 pandemic) and environmental shocks - such as natural disasters - have heightened the vulnerability of developing countries to future shocks, and can compromise their development prospects. International institutions and researchers have advocated that the strengthening of productive capacities in these countries would help them enhance the resilience of their economies to shocks, and promote sustainable development. The present paper has examined the effect of productive capacities on economic growth and economic growth volatility in developing countries, in particular when they face a high level of structural economic vulnerability. The analysis covers 117 developing countries over the period 2000-2018. It shows that productive capacities do not only promote economic growth, but also reduce economic growth volatility. On the other hand, structural economic vulnerability reduces economic growth, in particular when it exceeds a certain level, and induces greater volatility of economic growth. Interestingly, the findings suggest that productive capacities promote economic growth and reduce economic growth volatility in countries that face a high degree of structural economic vulnerability. These findings support the recommendation by international institutions and researchers that if they were to enhance the resilience of their economies to shocks, and promote sustainable economic growth, developing countries (in particular the poorest ones) should strengthen their productive capacities.
Aerial Manipulator Control Method Based on Generalized Jacobian
Authors: Ikeda Takahiro , Ohara Kenichi , Ichikawa Akihiko , Ashizawa Satoshi , Oomichi Takeo , Fukuda Toshio ,   Gifu University 1-1 Yanagido, Gifu city, Gifu 501-1193, Japan,   Meijo University 501-1 Shiogamaguchi, Tempaku-ku, Nagoya, Aichi 468-8502, Japan
Published: April 2021

This paper describes a control method for an aerial manipulator on an unmanned aerial vehicle (UAV) by using a generalized Jacobian (GJ). Our task is to realize visual check of bridge inspection by employing a UAV with a multi-degree-of-freedom (DoF) manipulator on its top. The manipulator is controlled by using the GJ. Subsequently, by comparing the aerial manipulator control with a conventional Jacobian experimentally, we discovered that the accuracy of the control improved by applying the GJ. The manipulator has three DoFs in the X-Z plane of the UAV coordinate system. The experiment shows that the manipulator controlled with the GJ can compensate for the pose error of the body by 54.5% and 47.7% in the X- and Z-axes, respectively.
Optimal Position and Attitude Control of Quadcopter Using Stochastic Differential Dynamic Programming with Input Saturation Constraints
Authors: Satoh Satoshi , Saijo Hironori , Yamada Katsuhiko ,   Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan,   Graduate School of Engineering, Kyoto University Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8246, Japan
Published: April 2021

This paper considers the position and attitude control of a quadcopter in the presence of stochastic disturbances. Basic quadcopter dynamics is modeled as a nonlinear stochastic system described by a stochastic differential equation. Subsequently, the position and attitude control is formulated as a nonlinear stochastic optimal control problem with input saturation constraints. To solve this problem, a continuous-time stochastic differential dynamic programming (DDP) method with input saturation constraints is newly proposed. Finally, numerical simulations demonstrate the effectiveness of the proposed method by comparing it with the linear quadratic Gaussian and the deterministic DDP with input saturation constraints.
Verification of Model Accuracy and Photo Shooting Efficiency of Large-Scale SfM for Flight Path Calculation
Authors: Yamauchi Sho ,   Future University Hakodate 116-2 Kamedanakano-cho, Hakodate, Hokkaido 041-8655, Japan, Suzuki Keiji
Published: April 2021

In drone photography of vast natural terrain, it is difficult to know in advance the exact location and shape of an object. In addition, there are many time and location constraints in such environments; therefore, it is desirable to capture images quickly by automatic flight. The authors had previously proposed a method to determine the safety of such an automatic flight photography plan in advance and capture photographs quickly. The method was designed to model an object from the safety zone using multiple drones and determine a safe path in advance. However, further improvement in the efficiency was necessary when photographing the object over a large area. In contrast, in this study, to improve the efficiency of the safe flight path determination method for large-scale subjects, we developed a new method to model each number of photographs using structure from motion (SfM) and verify the accuracy of the model obtained for each number of photographs in advance. In addition, by determining the appropriate number of shots based on the results obtained and reducing the loss of time and battery during shooting, we verified the extent to which the total flight time could be reduced for a flight path of shooting a large-scale object in the Esan Prefectural Natural Park. In the case of the Esan Prefectural Natural Park, we demonstrate that the difference in the small-object shooting time was not a problem, but the difference was significant for shooting large objects. The effectiveness of determining and applying, in advance, the number of shots that provides appropriate accuracy is demonstrated.
Quadrotor Drone Hovering in Ground Effect
Authors: Tanabe Yasutada , Sugawara Hideaki , Sunada Shigeru , Yonezawa Koichi , Tokutake Hiroshi ,   Japan Aerospace Exploration Agency (JAXA) 6-13-1 Osawa, Mitaka, Tokyo 181-0015, Japan,   Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan,   Central Research Institute of Electric Power Industry (CRIEPI) 1646 Abiko, Abiko-shi, Chiba 270-1194, Japan,   Kanazawa University Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan
Published: April 2021

A variable-pitch-controlled quadrotor drone was simulated in the ground effect using a high-fidelity CFD solver. In contrast to a single rotor in the ground effect, which has been extensively studied for conventional helicopters, the flow fields around multiple rotors are complex. In this study, the rotating speed of the rotors was maintained constant, and the blade pitch angles were adjusted so that the total thrust of the multicopter was the same regardless of the rotor height from the ground. It was observed that the power required for the quadrotors, which generate the same thrust, decreases when the rotors are approaching the ground from the height where they can be considered to be out of the ground effect, but increases locally when the rotor height is approximately the rotor radius, owing to flow recirculation into the rotor, and then decreases abruptly when the rotors further approach the ground. The outwash from the quadrotors depends heavily on the direction relative to the quadrotor layout. Along the plane crossing the diagonal rotor centers, the outwash velocity profiles resemble those of a single rotor; however, the outwash from the rotor gaps is stronger and extends to a much higher altitude.
Unmanned Aircraft System Traffic Management (UTM) Simulation of Drone Delivery Models in 2030 Japan
Authors: Oosedo Atsushi ,   Chofu Aerospace Center Aerodrome Branch, Japan Aerospace Exploration Agency (JAXA) 6-13-1 Osawa, Mitaka, Tokyo 181-0015, Japan, Hattori Hiroaki , Yasui Ippei , Harada Kenya
Published: April 2021

An unmanned aircraft system traffic management (UTM) system to support flights beyond visual line-of-sight is considered necessary for the promotion of commercial drone use. In the research and development of UTM systems, cost and time constraints make it difficult to actually fly a large number of drones in the same airspace, so research is mainly conducted using a simulator. This paper presents details of a UTM simulator named the “scalable simulator for knowledge of low-altitude environment” (SKALE) developed by the Japan Aerospace Exploration Agency (JAXA), with respect to the construction of a model case of drone delivery model set in 2030 in Japan. Moreover, UTM concepts for airspace safety and efficient airspace utilization (parcel transport) are proposed and evaluated using JAXA’s UTM simulator and drone delivery model cases. Simulation results are discussed, and the knowledge gained for the improvement of airspace safety and airspace utilization (parcel transport) efficiency is documented.
Propagation Measurements of Multi-Hop Command and Telemetry Communications System in the 169 MHz Band for Drones
Authors: Miura Ryu , Kagawa Toshinori , Ono Fumie , Shan Lin , Matsuda Takashi , Kojima Fumihide ,   National Institute of Information and Communications Technology (NICT) 3-4 Hikarino-oka, Yokosuka, Kanagawa 239-0847, Japan,   Central Research Institute of Electric Power Industry (CRIEPI) 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196, Japan,   Ministry of Internal Affairs and Communications 2-1-2 Kasumigaseki, Chiyoda-ku, Tokyo 100-8926, Japan
Published: April 2021

The 169 MHz band was assigned for unmanned vehicles such as robots and drones by the Ministry of Internal Affairs and Communications (MIC) in 2016 in Japan, according to the reallocation of the TV band from VHF (analog) to UHF (digital). This band is expected to have a long range and good diffraction characteristics during drone operation over a long range with obstacles such as buildings, trees, or terrains. In this paper, we present the prototype system and its propagation experiments of command and telemetry communications at 169 MHz, which is added to a multi-hop communication unit in the 920 MHz band developed previously to enhance the beyond line-of-sight (BLOS) operation performance for drones.
Analysis of Autonomous Coordination Between Actuators in the Antagonist Musculoskeletal Model
Authors: Goto Takahiro , Sugimoto Yasuhiro , Nakanishi Daisuke , Naniwa Keisuke , Osuka Koichi ,   Osaka University 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
14-4 Nishi-ikuma, Matsue, Shimane 690-8518, Japan,   Hokkaido University Kita 12, Nishi 7, Kita-ku, Sapporo, Hokkaido 060-0812, Japan
Published: April 2021

The McKibben Pneumatic Actuator (MPA) is well-known as a type of soft actuator. As MPA generates tension only in the direction of compression, it is necessary to construct an antagonistic structure to drive a joint by MPAs and to coordinate antagonized MPAs. Similar to MPA, muscles in animals also generate tension only in the direction of contraction. Some studies have reported that animals utilize tension information to coordinate muscles for various autonomous movements. The purpose of this study is to realize autonomous cooperation between antagonized MPAs by applying tension feedback control and analyzing the mechanism of coordination. For this purpose, we verify the effect of tension feedback control on the 1-DOF pendulum model with antagonized MPAs. First, through numerical simulations, it is confirmed that the tension feedback generates various coordinated movements of antagonized MPAs, and the pendulum exhibits a bifurcation phenomenon based on the phase difference of the inputs of MPAs. Thereafter, we develop an actual experimental machine based on the model and confirm the autonomous cooperation between actual MPAs through verification experiments similar to the numerical simulations.
WHY DO MUZAKI PAY ZAKAT THROUGH INSTITUTIONS? THE THEORY OF PLANNED BEHAVIOUR APPLICATION
Authors: Annahl Muhammad Akbar Fadzkurrahman , Al Anshory Ali Chamani , Aulia Mahdiah
Published: April 2021

This research investigates the factors that influence the intention of paying zakat maal through zakat institutions. By paying zakat in such a way, muzaki can support zakat institutions in eradicating poverty through a broader and deeper distribution of zakat funds. However, the realisation of zakat collection remains low compared to its potential, which means that the number of muzaki who pay zakat through institutions also remains limited. The research applied the extended theory of planned behavior (TPB) framework with knowledge, trust, and perceived ease of use as additional variables to address the issue in question. Subsequently, an online questionnaire was conducted using the purposive sampling method, which generated 383 respondents. The primary data were examined using the PLS-SEM method. Based on the results, all the proposed hypotheses were accepted. Considering that paying zakat via institutions provides a better way to assist rightful recipients, various suggestions are made to zakat managers, policymakers, and muzaki. The research highlights a new perspective by examining the intention of paying zakat maal through institutions with the additional variables of knowledge, trust, and perceived ease of use.
Geographic variations in adherence to and persistence with adjuvant hormonal therapy for the privately insured women aged 18-64 with breast cancer in Texas
Authors: Kim Jung Hyun , Rajan Suja S. , Du Xianglin L. , Franzini Luisa , Giordano Sharon H. , Morgan Robert O.
Published: April 2021

Purpose: Objective of this study is to examine the geographical patterns of adjuvant hormonal therapy adherence and persistence and the associated factors in insured women aged 18-64 with early breast cancer in Texas. Methods: A retrospective cohort study was conducted by using claims data for population insured by Blue Cross Blue Shield of Texas (BCBSTX) from the year 2008 to 2013. Women diagnosed with early breast cancer who were taking tamoxifen or aromatase inhibitors (AIs) for adjuvant hormonal therapy with at least one prescription claim, from January 1, 2008 to December 31, 2012, and were enrolled through 2013, were identified. Adherence to adjuvant hormonal therapy and persistence on adjuvant hormonal therapy were calculated as outcome measures. Women without a gap between two consecutive dispensed prescriptions of at least 90 days in medication were considered as persistently taking the medications. Patient-level multivariate logistic regression models with repeated regional-level adjustments were used to determine the geographical variations and patient-level, provider-level, and area-level factors that were associated with adjuvant hormonal therapy adherence.Results: Of the 938 women in the cohort, 627 (66.8%) initiated adjuvant hormonal therapy. Most of the smaller HRRs have significantly higher or lower rates of treatment adherence and persistence rates relative to the median regions. The use of AHT varies substantially from one geographical area to another, especially for adherence, with an approximately two-fold difference between the lowest and highest areas and area-level factors were found to be significantly associated with the compliance of AHT. Conclusions: There are geographical variations in AHT adherence and persistence in Texas. Patient-level and area-level factors have significant associations explaining these patterns.
Developing an Energy Efficient Ubiquitous Agriculture Mobile Sensor Network Based Threshold Built-In Mac Routing Protocol (TBMP)
Authors: R Dhaya , R Kanthavel , A Ahilan
Published: April 2021

Smart agriculture has been a promising model with the intention of supervising farms by means of contemporary wireless technologies to enhance the quantity and quality of yield at the same time as minimizing the individual labor requirement. In addition the effective utilization of the Sensors as communication components that is the key one to monitor and manage soil, water, light, humidity, temperature. A Mobile Ad-hoc sensor node comprises sensors to gather real time environment from the agricultural land with the wireless communication technology and process the data before sharing information with other nodes in the network. On the other hand, the challenges have been enormously high path loss and lack of communication range under the environment when passing through soil, sand, water and other climatic conditions. As Wireless Sensor Networks (WSNs) has self-organized and adhoc wireless capability to monitor physical or environmental conditions, it can be used effectively in smart agriculture. As sensor nodes have been limited itself by means of power to be in active mode always, the design of such energy efficient Agriculture WSN is a paramount issue. Hence it has been planned to utilize the WSN as well as Ubiquitous technology for the smart agriculture with energy efficiency. With the purpose of build up a model, a Ubiquitous agriculture Mobile Sensor Network based Threshold built-in MAC Routing protocol (TBMP) has been proposed to make it fit for minimal resource utilization by comparing with the existing protocols IMR and PTSR. In addition, the testing will be done to monitor changes in environmental surroundings in the agricultural land smartly in order to obtain maximum usage of Ubiquitous concept by applying existing and proposed protocols.
Cannabidiol promotes neurogenesis in the dentate gyrus during an abstinence period in rats following chronic exposure to methamphetamine
Authors: Razavi Yasaman , Keyhanfar Fariborz , Haghparast Abbas , Shabani Ronak , Mehdizadeh Mehdi
Published: April 2021

Chronic methamphetamine (meth) abuse can lead to certain deficits in the hippocampal function by affecting the hippocampal neurogenesis and plasticity. To determine whether cannabidiol (CBD) can promote proliferation and maturation of neuronal progenitor cells, this study investigated the CBD effect on neurogenesis in the hippocampal dentate gyrus (DG) following chronic exposure to meth in rats. The rats received 2 mg/kg of meth twice a day for ten days. Next, immunofluorescence was performed to evaluate the effect of intracerebroventricular (ICV) administration of CBD (50 µg/5 µL) over an abstinence period (ten days) on the expression levels of neurogenesis markers, such as Ki67, NeuN, and doublecortin (DCX). Moreover, neuronal degeneration in the hippocampus was assessed using Nissl staining. According to our findings, repeated ICV administration of CBD improved cell proliferation and neurogenesis and increased the number of Ki-67 and DCX-positive cells in the abstinence period. Meanwhile, meth treatment subjects caused a significant decrease in the number of neurogenesis makers, as compared to the control group. The neurogenesis markers (Ki-67 and DCX) could be somewhat reversed, while NeuN did not show any significant increase in the CBD group. Our findings demonstrated that CBD can induce neuroprotective effects by modulating neurogenesis. Therefore, it can provide a promising therapeutic approach to improve cognitive performance following chronic exposure to psychostimulant drugs, including meth.
To Explore the Association Between Coagulation Function and Cerebral Microbleeds in Patients With Intracerebral Hemorrhage
Authors: Wang Zhenhua , Xiao Xinlan
Published: April 2021

Object:To verify the association between coagulation function and cerebral microbleeds(CMBs) in patients with intracerebral hemorrhage(ICH).Methods: A total of 193 patients underwent 3.0T magnetic resonance image(MRI) and were found ICH,they were divided into CMBs and non-CMBs groups. Indicators of coagulation function and some other flood and clinical data like prothrombin time (PT), activated partial thromboplastin time(APTT), international normalized ratio (INR) were enrolled.univariate and multivariate analysis were used to compare the difference between the two groups and screen risk factors. One or more receiver operating characteristic(ROC) curve were used to present the predictive value of the indicators for CMBs.Result: After a univariate analysis, the result showed that INR levels was significantly higher in the CMBs group than the non-CMBs group [1.06 (0.96, 1.12) vs. 0.97 (0.93, 1.03);P= 0.035), while there was no significant difference between PT, APTT, TT and FBI. To compare the baseline characteristic of the two groups showed that the age ,the proportion of a history of long-term antithrombotic treatment(AT), history of ischemic stroke(IS) and combination with a brain atrophy(BA) cases in the CMBs group was significantly higher than the non-CMBs group(each P < 0.05). Multivariate logistic regression analysis showed that age and IS were independent risk factors for CMBs in patients with ICH (OR:0.967, 95% CI: 0.936-0.998, P = 0.036; OR:2.016, 95% CI: 1.090-3.991,P = 0.044; respectively). ROC curves indicated that the area under curve(AUC) of age and IS for CMBs in patients with ICH was 0.610(95%CI:51.76%-70.32%) and 0.619(95%CI:53.32%-68.87%), respectively.Conclusion:Age and IS were the independent risk factor for CMBs in patients with ICH, among the coagulant indicators, INR showed a significantly higher level in the CMBs group than the non-CMBs group.
Degradation of Chitin using Chitinase Produced from Molecular Identified Bacteria
Authors: Aly Magda M , Seddiq Amna A , Baghdadi Afra M
Published: April 2021

Chitin and chitinolytic are beneficial enzymes for their biotechnological applications. Chitinases contribute to the generation of carbon and nitrogen in the ecosystem and can prohibit many fungal ailments that can threaten crop production worldwide. The goal of this work was the production and characterization of chitinase enzymes from bacteria isolated from the western region, Saudi Arabia for biocontrol fungal pathogens. Colloidal chitin from shrimp shells was prepared and used for isolation of chitinolytic bacteria on Mineral chitin agar medium from different sources. The most active isolates were AMM1which was characterized and identified as Alcaligenes aquatilis using 16SrRNA.. In conclusion, purified chitinase was success to produce from Alcaligenes aquatilis for medical uses and biocontrol process.
Optimal model of desalination planning under uncertainties in a water supply system
Authors: Wang Zongzhi , Ye Ailing , Liu Kelin , Tan Liting
Published: April 2021

A requirement for developing desalination in coastal regions suffering water scarcity is proposed to address the increased water demand and limited traditional water supply. The determination of plant capacity and water allocation scheme in a multiple-source water supply system, the first problem in planning desalination under stream flow and water demand uncertainties, remains a challenge. To address this gap, an interval-parameter two-stage stochastic programming model is developed in this study. The first-stage problem is to determine a proper desalination plant capacity, and the second is the water allocation scheme under uncertainties of natural stream flows, water demands, benefits and economic losses. The objective function is to maximize the net benefit of the system, and the cost function of desalination, including capital and operational costs, implying environmental impact, is linearized within a range of plant capacities to solve the model. The proposed approach is applied to an urban area of Weihai city in China to illustrate the validity of the model. The results suggest a capacity of 46 103 m3/d in 2030 and 56 103 m3/d in 2040. Sensitivity analyses of the parameters indicate that the unit price of electricity influences the utilization level of desalinated seawater, and a complementary relationship is observed between reclaimed water and desalinated seawater.
Constructing an Optimal Scar Tissue Mobilizer
Authors: Halverson Allie Claire
Published: April 2021

Background This project aimed to create a device optimal for mobilizing scar tissue. To do this, a Transcutaneous Electrical Nerve Stimulation (TENS) circuit and a rotating scar massage ball was constructed into one cohesive device. The TENS portion of the device aims to help relieve pain around the scar tissue, and the massager works to mobilize the scar tissue and relieve extra tension in the area. Mobilization of scar tissue can help patients who have undergone surgery or other physical trauma to attain proper skin function without pain and/or excessive tension. Results The rotating scar massage ball puts out 16 Newtons of centrifugal, rotating, force. This means that it is powerful enough to properly massage the area, but not too strong to the point where it would cause pain for the user. Conclusions This device utilizes two effective methods of pain relief and scar mobilization, making it optimal for the painless mobilization of scar tissue. It could be used by patients at home and by physical therapists in an office setting to help patients both mobilize their damaged, scarred tissue and relive pain around the affected area.
IoT Based Traffic Prediction and Traffic Signal Control System for Smart City
Authors: S Neelakandan , A Berlin M , Tripathi Sandesh , V Brindha Devi , Bhardwaj Indu , N Arulkumar
Published: April 2021

Because of the population increasing so high, and traffic density remaining the same, traffic prediction has become a great challenge today. Creating a higher degree of communication in automobiles results in the time wastage, fuel wastage, environmental damage, and even death caused by citizens being trapped in the middle of traffic. Only a few researchers work in traffic congestion prediction and control systems, but it may provide less accuracy. So, this paper proposed an efficient IoT based traffic prediction using OWENN algorithm and traffic signal control system using Intel 80286 microprocessor for a smart city. The proposed system consists of '5' phases, namely, IoT data collection, feature extraction, classification, optimized traffic IoT values, and traffic signal control system. Initially, the IoT traffic data is collected from the dataset. After that, traffic, weather, and direction information are extracted, and these extracted features are given as input to the OWENN classifier, which classifies which place has more traffic. Suppose one direction of the place has more traffic, it optimizes the IoT values by using IBSO, and finally, the traffic is controlled by using Intel 80286 microprocessor. The experimental results show that the proposed system outperforms state-of-the-art methods.
In-Situ Construction of Bi2O3/Bi2SiO5 Heterojunction Photocatalyst On The Exfoliated Bentonite With Efficient Photocatalytic Performance
Authors: Nie Tao , Chen Ben , Huang Yuyang , Wang Rui , He Beibei , Jin Jun , Wang Huanwen , gong Yansheng
Published: April 2021

In this study, Bi2O3/Bi2SiO5 heterojunction were in-situ constructed on the exfoliated bentonite via a novel one-pot method. The crystal structure, morphology, and optical features for the as-synthesized Bi2O3/Bi2SiO5 heterojunctions were systematically characterized by a series of characterization methods. During the preparation process, the exfoliated bentonite acted as the Si source and framework for the in-situ formation of Bi2O3/Bi2SiO5 p-n heterogeneous junction on the bentonite interlayer. As a result, the Bi2O3/Bi2SiO5 photocatalyst exhibited a superior photocatalytic performance than that of bare α-Bi2O3 toward the decomposition of Rhodamine B (RhB) via the simulated solar light irradiation, which was due to the synergetic effects of large specific surface areas and p-n junction between Bi2SiO5 and Bi2O3. Moreover, a probable photocatalytic mechanism for the as-prepared photocatalysts was explored. This work provides a new insight into building the cost-efficient photocatalysts for the contaminant degradation and a latent photocatalytic application of bentonite.
Optical Sensing and Supramolecular Cyanide Recognition Sites of Salophenes as Molecular Tweezers: The First Example of Recognition via Intramolecular Aldimine Condensation Cyclization
Authors: Darabi Hossein Reza , Nazarian Ramo , Alizadeh Sepideh , Aghapoor Kioumars , Ebadinia Leila
Published: April 2021

The optical sensing and supramolecular cyanide recognition sites of two dipodal Schiff bases having conjugated to catecols (1) and phenols (2) (namely, salophenes 1 and 2) have been studied. In the case of optical sensing, both probes recognized only cyanide (CN¯) ions in 30% PBS buffer CH3CN (pH 7.4) as confirmed from the changes of absorption and emission bands, resulting in color changes. From the supramolecular recognition point of view, probes 1 and 2 show the different recognition bahaviour toward CN¯, as evidenced by the fluoroscence and NMR data, as well the OH¯ and reversibility experiments. While 1 recognizes CN¯ via deprotonation, that of 2 is the first example of Schiff base which senses CN¯ through an intramolecular aldimine condensation cyclization, leading to formation of dihydroxyquinoxaline 4. In general, probes 1, 2 and 4 are promising on-site optical sensors in terms of easy prepared, selectivity, sensitivity (1–10 nM), ease of use, rapid response (< 5 s) and test kits.