bluuebunny/crossref_metadata_2025 huggingface dataset:
Sand mining far outpaces natural supply in a large alluvial river
Authors: Hackney Christopher R. , Vasilopoulos Grigorios , Heng Sokchhay , Darbari Vasudha , Walker Samuel , Parsons Daniel R.
Published: September 2021

Abstract. The world's large rivers are facing reduced sediment loads due to anthropogenic activities such as hydropower development and sediment extraction. Globally, estimates of sand extraction from large river systems
are lacking, in part due to the pervasive and distributed nature of
extraction processes. For the Mekong River, the widely assumed estimate of
basin-wide sand extraction is 50 Mt per year. This figure is based on 2013
estimates and is likely to be outdated. Here, we demonstrate the ability of
high-resolution satellite imagery to map, monitor, and estimate volumes of
sand extraction on the Lower Mekong River in Cambodia. We use monthly
composite images from PlanetScope imagery (5 m resolution) to estimate sand extraction volumes over the period 2016–2020 through tracking sand
barges. We show that rates of extraction have increased on a yearly basis
from 24 Mt (17 to 32 Mt) in 2016 to 59 Mt (41 to 75 Mt) in 2020 at a
rate of ∼8 Mt yr−1 (6 to 10 Mt yr−1), where values in parentheses relate to lower and upper error bounds, respectively. Our revised estimates for 2020 (59 Mt) are nearly 2 times greater than previous best estimates for sand extraction for Cambodia (32 Mt) and greater than current best estimates for the entire Mekong Basin (50 Mt). We show that over the 5-year period, only 2 months have seen positive (supply exceeds extraction) sand budgets under mean scenarios (5 months under the scenarios with the greatest natural sand supply). We demonstrate that this net negative sand budget is driving major reach-wide bed incision with a median rate of −0.26 m a−1 over the period 2013 to 2019. The use of satellite imagery to monitor sand mining activities provides a low-cost means to generate up-to-date, robust estimates of sand extraction in the world's large rivers that are needed to underpin sustainable management plans of the global sand commons.
The life cycle in late Paleozoic eryopid temnospondyls: developmental variation, plasticity and phylogeny
Authors: Schoch Rainer R.
Published: September 2021

Abstract. Eryopid temnospondyls were large apex predators in Carboniferous and Permian stream and lake habitats. The eryopid life cycle is exemplified by Onchiodon labyrinthicus from Niederhäslich (Saxony, Germany), which is represented by numerous size classes from small larvae to heavily ossified adults. Morphometric and principal component analyses provide new insights into ontogenetic changes in O. labyrinthicus, and comparison with adults of other eryopids documents phylogenetic patterns in the occupation of morphospace. Compared with small specimens of Sclerocephalus spp., immature O. labyrinthicus occupies a neighboring but much larger space, corresponding to a broader range of variation. Adults of Actinodon frossardi map with some juveniles of O. labyrinthicus, whereas other juveniles of the latter lie close to adults of O. thuringiensis, Glaukerpeton avinoffi and Osteophorus roemeri. Morphospace occupation of adult eryopids is partly consistent with cladistic tree topology, which gives the following branching pattern: Actinodon frossardi forms the basalmost eryopid, followed by Osteophorus roemeri, Glaukerpeton avinoffi and the genus Onchiodon (O. labyrinthicus + O. thuringiensis); then Clamorosaurus nocturnus; and finally the monophyletic genus Eryops. The presumably juvenile skull of Eryops anatinus falls well outside the domains of both adult eryopids and immature O. labyrinthicus, showing a unique combination of juvenile and adult features. Instead, Onchiodon langenhani and the Ruprechtice specimens referred to O. labyrinthicus map within the domain of immature O. labyrinthicus. Raised levels of variation in O. labyrinthicus coincide with evidence of a stressed habitat, in which limiting factors were fluctuating salinity, absence of fishes, enhanced competition and seasonal algal blooms. The documented broad variation was possibly caused by developmental plasticity responding to fluctuations in lake hydrology and nutrients in this small, short-lived water body.
COVID-19 lockdown effects on the seismic recordings in Central America
Authors: Arroyo-Solórzano Mario , Castro-Rojas Diego , Massin Frédérick , Linkimer Lepolt , Arroyo Ivonne , Yani Robin
Published: September 2021

Abstract. A noticeable decrease in seismic noise was registered worldwide
during the lockdown measures implemented in 2020 to prevent the spread of
COVID-19. In Central America, strong lockdown measures started during March
of 2020. In this study, we used seismic stations from Costa Rica, Guatemala, El
Salvador, and Nicaragua to study the effects of these measures on seismic
records by characterizing temporal variations in the high-frequency band
(4–14 Hz) via spectral and amplitude analyses. In addition, we studied the
link between the reduction in seismic noise and the number of earthquake
detections and felt reports in Costa Rica and Guatemala. We found that
seismic stations near the capitals of Costa Rica, Guatemala, and El
Salvador presented a decrease in their typical seismic noise levels, from
200 to 140, from 100 to 80, and from 120 to 80 nm, respectively. Our results
showed that the largest reduction of ∼ 50 % in seismic noise
was observed at seismic stations near main airports, busy roads, and densely
populated cities. In Nicaragua, the seismic noise levels remained constant
(∼ 40 nm), as no lockdown measures were applied. We suggest
that the decrease in seismic noise levels may have increased earthquake
detections and the number of felt reports of low-magnitude earthquakes.
However, the variations observed in several seismic parameters before and
after the lockdown are not significant enough to easily link our
observations or separate them from other contributing factors. Our results
imply that the study of seismic noise levels can be useful to verify
compliance with lockdown measures and to explore their effects on earthquake
detection and felt reports.
Beyond the Trifold in Civics Presentations: The Measure of Youth Policy Arguments
Authors: Hipolito-Delgado Carlos P. , Stickney Dane , Kirshner Ben , Maul Andrew
Published: September 2021

Youth are increasingly engaging in civic action to address social injustices. Many adult educators are also looking for instructional resources that support youth voice as a way to promote adolescent civic development and community change. Alas, assessment tools to support youth voice and policy argumentation are lacking. Existing tools overemphasize public speaking skills and rely on dated artifacts such as cardboard trifold posters. In this article we introduce the Measure of Youth Policy Arguments (MYPA), a tool designed to aid in the development and assessment of high-quality youth policy presentations. We also describe how to use the MYPA in formative and summative contexts. Additionally, we provide initial evidence for the validity and reliability of the MYPA. Furthermore, we argue that MYPA has applications in preparing youth for policy presentation and in assessing learning outcomes associated with youth voice projects.
Why Not the “New Flexible”?: The Argument for Not Returning to “Normal” After COVID-19
Authors: Saia Toni , Nerlich Andrea Perkins , Johnston Sara P.
Published: September 2021

The COVID-19 pandemic has had a disparate impact across demographic groups, resulting in BIPOC and disabled people experiencing transmission, hospitalization, and death at higher rates than White and non-disabled populations. However, responses within the pandemic created new avenues for access to people with disabilities, including telehealth, work from home opportunities, and virtual participation, which were the very solutions and accommodations they have been requesting, but denied, for years. The call for a “return to normal” is steeped in ableist thinking. Society was made aware of the inequities for disabled people throughout the pandemic, and flexible solutions must be retained and refined to continue the access provided during this time. As a start to a discourse on reflection and action, the authors suggest four areas to target for change toward health equity: (a) messaging and communication, (b) accessibility, (c) addressing attitudinal barriers, and (d) seeking and using the input of disabled people. The following presents an overview of each factor and action steps, with resources to guide them.
THE CHALLENGE OF PREPARING PRESERVICE TEACHERS TO TEACH INFORMAL INFERENTIAL REASONING
Authors: LEAVY AISLING M.
Published: September 2021

There is growing recognition of the importance of developing young students’ informal inferential reasoning (IIR). This focus on informal inference in school statistics has implications for teacher education. This study reports on 26 preservice teachers utilizing Lesson Study to support a focus on the teaching of IIR in primary classrooms. Participants demonstrated proficiency reasoning about the elements fundamental to informal inferential reasoning but had difficulties developing pedagogical contexts to advance primary students’ informal inferential reasoning. Specifically, issues emerged relating to data type, an excessive focus on procedures, locating opportunities for IIR, and a lack of justification and evidence-based reading. Focusing on the lesson as the unit of analysis combined with classroom-based inquiry supported the development of statistical and pedagogical knowledge.
First published May 2010 at Statistics Education Research Journal: Archives
Muscle Actuators, Not Springs, Drive Maximal Effort Human Locomotor Performance
Authors: McBride Jeffrey M.
Published: September 2021

The current investigation examined muscle-tendon unit kinematics and kinetics in human participants asked to perform a hopping task for maximal performance with variational preceding milieu. Twenty-four participants were allocated post-data collection into those participants with an average hop height of higher (HH) or lower (LH) than 0.1 m. Participants were placed on a customized sled at a 20º angle while standing on a force plate. Participants used their dominant ankle for all testing and their knee was immobilized and thus all movement involved only the ankle joint and corresponding propulsive unit (triceps surae muscle complex). Participants were asked to perform a maximal effort during a single dynamic countermovement hop (CMH) and drop hops from 10 cm (DH10) and 50 cm (DH50). Three-dimensional motion analysis was performed by utilizing an infrared camera VICON motion analysis system and a corresponding force plate. An ultrasound probe was placed on the triceps surae muscle complex for muscle fascicle imaging. HH hopped significantly higher in all hopping tasks in comparison to LH. In addition, the HH group concentric ankle work was significantly higher in comparison to LH during all of the hopping tasks. Active muscle work was significantly higher in HH in comparison to LH as well. Tendon work was not significantly different between HH and LH. Active muscle work was significantly correlated with hopping height (r = 0.97) across both groups and hopping tasks and contributed more than 50% of the total work. The data indicates that humans primarily use a motor-driven system and thus it is concluded that muscle actuators and not springs maximize performance in hopping locomotor tasks in humans.
Relationships between Heart Rate Variability, Sleep Duration, Cortisol and Physical Training in Young Athletes
Authors: Mishica Christina , Kyröläinen Heikki , Hynynen Esa , Nummela Ari , Holmberg Hans-Christer , Linnamo Vesa
Published: September 2021

The aims of the current study were to examine the relationships between heart rate variability (HRV), salivary cortisol, sleep duration and training in young athletes. Eight athletes (16 ± 1 years) were monitored for 7 weeks during training and competition seasons. Subjects were training for endurance-based winter sports (cross-country skiing and biathlon). Training was divided into two zones (K1, easy training and K2, hard training). Heart rate and blood lactate during submaximal running tests (SRT), as well as cortisol, sleep duration and nocturnal HRV (RMSSD), were determined every other week. HRV and cortisol levels were correlated throughout the 7-week period (r = -0.552, P = 0.01), with the strongest correlation during week 7 (r = -0.879, P = 0.01). The relative changes in K1 and HRV showed a positive correlation from weeks 1-3 (r = 0.863, P = 0.006) and a negative correlation during weeks 3-5 (r = -0.760, P = 0.029). The relative change in sleep during weeks 1-3 were negatively correlated with cortisol (r = -0.762, P = 0.028) and K2 (r = -0.762, P = 0.028). In conclusion, HRV appears to reflect the recovery of young athletes during high loads of physical and/or physiological stress. Cortisol levels also reflected this recovery, but significant change required a longer period than HRV, suggesting that cortisol may be less sensitive to stress than HRV. Moreover, our results indicated that during the competition season, recovery for young endurance athletes increased in duration and additional sleep may be beneficial.
TINGKAT PENGETAHUAN MASYARAKAT TERHADAP PENGGUNAAN OBAT TRADISIONAL DAN OBAT KIMIA SINTESIS DI KELURAHAN KEDAUNG KOTA DEPOK
Authors: Aulia Gina , Rizki Aulia Nadya , Hidayat Arif , Khofifah Selfi
Published: September 2021

Health is the main thing in human life. Health is obtained by maintaining the body properly regularly and consistently. Treatment with traditional medicine and synthetic chemical drugs is a solution in case of health problems. The selection and use of traditional medicine or synthetic chemistry in the community tends to depend on each other's knowledge. This study aims to identify the level of public knowledge on the use of traditional medicines and synthetic chemical drugs in the RT 012, Kedaung Village, Depok City. This research method is a descriptive survey with a population of 336 people. The sampling technique used is simple random sampling with a sample of 77 respondents. Data were collected using a questionnaire. The results showed that the level of public knowledge of the use of traditional medicine was included in the Good category of 64 respondents (83.3%), Good Enough knowledge 12 respondents (15.6%), and Poor knowledge of 1 respondent (1.3%). Public knowledge of the use of synthetic chemical drugs in the Good category 56 respondents (72.7%), Good enough knowledge 19 respondents (24.7%), and Poor knowledge 2 respondents (2.6%). In conclusion, the level of public knowledge about the use of traditional drugs is 83.3% and synthetic drugs is 72.7%, thus stating that public knowledge about traditional medicine is higher than synthetic chemical medicine.ABSTRAKKesehatan merupakan hal utama dalam kehidupan manusia. Sehat didapatkan dengan cara memelihara tubuh dengan baik secara rutin dan konsisten. Pengobatan dengan obat tradisional maupun obat kimia sintetis menjadi solusi jika terjadi gangguan kesehatan. Pemilihan dan penggunaan obat tradisional atau kimia sintetis masyarakat cenderung tergantung pada pengetahuan masing-masing. Penelitian ini bertujuan untuk mengidentifikasi tingkat pengetahuan masyarakat terhadap penggunaan obat tradisional dan obat kimia sintetis di RT 012 Kelurahan Kedaung Kota Depok. Metode penelitian ini adalah survei deskriptif dengan populasi berjumlah 336 orang. Teknik pengambilan sampel menggunakan simple random sampling dengan sampel sebanyak 77 responden. Data tingkat pengetahuan dikumpulkan menggunakan kuesioner. Hasil penelitian menunjukkan bahwa tingkat pengetahuan masyarakat terhadap penggunaan obat tradisional termasuk dalam kategori baik 64 responden (83,3%), pengetahuan cukup baik 12 responden (15,6%), dan pengetahuan kurang baik 1 responden (1,3%). Pengetahuan masyarakat terhadap penggunaan obat kimia sintetis kategori baik 56 responden (72,7%), pengetahuan cukup baik 19 responden (24,7%), dan pengetahuan kurang baik 2 responden (2,6%). Kesimpulan tingkat pengetahuan masyarakat tentang penggunaan obat tradisional yaitu 83,3% dan obat sintetis 72,7% sehingga menyatakan bahwa pengetahuan masyarakat tentang obat tradisional lebih tinggi dibandingkan dengan obat kimia sintetis.
Pathophysiology and Management of Long-term Complications After Transvaginal Urethral Diverticulectomy
Authors: Kim Hyeon Woo , Lee Jeong Zoo , Shin Dong Gil
Published: September 2021

Female urethral diverticulum (UD) is a rare and benign condition that presents as an epithelium-lined outpouching of the urethra. It has various symptoms, of which incontinence in the form of postmicturition dribble is the most common. The gold standard for the diagnosis of UD is magnetic resonance imaging, and the treatment of choice is transvaginal diverticulectomy. Despite the high success rate of transvaginal diverticulectomy, postoperative complications such as de novo stress urinary incontinence (SUI), recurrence, urethrovaginal fistula, recurrent urinary tract infections, newly-onset urgency, and urethral stricture can occur. De novo SUI is thought to result from weakening of the anatomical support of the urethra and bladder neck or damage to the urethral sphincter mechanism during diverticulectomy. It can be managed conservatively or may require surgical treatment such as a pubovaginal sling, Burch colposuspension, or urethral bulking agent injection. Concomitant SUI can be managed by concurrent or staged anti-incontinence surgery. Recurrent UD may be a newly formed diverticulum or the result of a remnant diverticulum from the previous diverticulectomy. In cases of recurrent UD requiring surgical repair, placing a rectus fascia pubovaginal sling may be an effective method to improve the surgical outcome. Urethrovaginal fistula is a rare, but devastating complication after urethral diverticulectomy; applying a Martius flap during fistula repair may improve the likelihood of a successful result. Malignancies in UD are rarely reported, and anterior pelvic exenteration is the recommended management in such cases.
Puck Collect Robot Challenge: aplicación de control difuso y cinemática en robot móvil diferencial y omnidireccional
Authors: Madariaga Sierra Guillermo M , Calderón Álvarez Rafael E.
Published: September 2021

Puck Collect Robot Challenge es un concurso que consiste en que dos robots autónomos recolecten discos de un color (rojo para uno, azul para el otro) y los trasladen a una base ubicada en una esquina del campo, que es de 250 x 250 cm del mismo color asignado. El que traiga más discos a la base ganará; o en el caso de llevar el mismo número, el que lo haga más rápido. En este artículo se presenta la implementación de un robot autónomo en la que se aplica control difuso y conceptos de cinemática, para lograr enrutar el robot hacia el disco y posteriormente hacia la base.
3D Printing Process: A review of recent research
Authors: Siraj Imran , Bharti Pushpendra S.
Published: September 2021

3D Printing (3DP) is an umbrella term that covers manufacturing technologies and processes that offer a wide spectrum of producing components and parts of variety of materials. 3DP is bound to revolutionize design, breaking barriers of geo-political terrains, economic tendencies and social status of nations. With the inception of new technologies and processes, it becomes challenging task for the researchers to investigate the effect of process parameters on performance measures (quality and functionality) and their best combination that yield desired results, in terms of quality characteristics. Researchers have established relationship between process parameters and performance measures and also suggested suitable combination of input parameters that yield desired results. In this paper, an attempt has been made to present an overview of the recent research that identified the importance of process parameters, their effect and optimization. the raw material may in the powder form, semi liquid form, or filament form. The 3D printing consist of three nsteps
A formação humana na educação digital numa perspectiva moriniana
Authors: De Pinho Maria José , Marques Silva Haleks , Gerbino Lucia , Dos Santos Santana Jocyléia
Published: September 2021

O artigo em questão tem como objetivo compreender a educação e tecnologias digitais em um contexto da pandemia, a partir dos operadores cognitivos do pensamento complexo propostos por Edgar Morin (2011,2015), apresentando os três princípios de religação da aprendizagem: o dialógico, o recursivo e o hologramático. Em relação a educação e tecnologias digitais são destacadas considerações sobre autores que fazem referência a este termo, tais como Leão(2020); Pires(2018) Santaella (2011); Schwab (2016,2018), considerando a educação e tecnologias digitais em um contexto de ensino e aprendizagem pode ser pensada juntamente com o pensamento complexo considerando que a nossa sociedade está em constante evolução e transformação.
К ВОПРОСУ О МЕЖДУНАРОДНЫХ ЛОГИСТИЧЕСКИХ СИСТЕМАХ В УСЛОВИЯХ ГЛОБАЛИЗАЦИИ
Authors: Избаирова Алия Сериковна
Published: September 2021

В статье рассматриваются развитие транснациональных корпораций, создание и развитие глобальных межгосударственных транспортно-логистических, телекоммуникационных, дистрибутивных макрологистических систем. Приведены основные движущие силы современной глобализации в логистике. Потенциал международной логистики должен быть направлен на достижение стратегических целей фирм и создание конкурентных преимуществ своих товаров. Для реализации глобальной логистики имеют процедуры дерегулирования, проводимые многими странами для снятия торговых, таможенных, транспортных и финансовых барьеров на пути развития международных торговых, социально-политических и экономических взаимоотношений. Успешно конкурировать на мировых рынках, глобальная компания должна постоянно внедрять новые технологии и инновационные идеи, направленные на повышение качества продукции, снижение издержек, удовлетворение потребностей покупателей.
БАТЫС ҚАЗАҚСТАН ОБЛЫСЫНДАҒЫ ПОЛИГОНҒА ІРГЕЛЕС ОРНАЛАСҚАН АЙМАҚТЫҚ ХАЛҚЫНЫҢ ДЕНСАУЛЫҚ ЖАҒДАЙЫ
Authors: Бисенгалиева Асыл Макымовна , Дюсегалиева Қайрлы Окасовна , Сайфутдинова Гульмира Сапарбековна
Published: September 2021

Бұл мақалада Батыс Қазақстан облысындағы полигонға іргелес жатқан аудандар халқының демографиялық сипаттамаларын салыстырып талдау жасағанда, халық денсаулығындағы жекелеген өзгерістердің кең таралғаны анықталды. Батыс өңірі полигонынан техногендік ластанудың әсерінен халықтың денсаулық жағдайының өзгеруін бағалау. Халықтың денсаулығы туралы ақпарат көздері облыстық электрондық денсаулық сақтау орталықтарынан (РЭДО), Денсаулық сақтау басқармаларынан, Батыс Қазақстан облысының зерттелген өңірлерінің Статистика департаменттерінен алынған деректер болды. Батыс Қазақстан облысының полигонға жақын ауданының тұрғындарына демографиялық сипаттамасына салыстырмалы талдау, «Капустин Яр», "Азғыр" полигондарына іргелес жатқан аудан халқының денсаулығындағы жекелеген өзгерістердің көп таралуын анықтады.
会员制仓储超市在中国发展现状及前景
Authors: 赵 伟晶
Published: September 2021

作为一种业态，会员制仓储超市进入中国已有20多年时间，但却一直发展缓慢；这两年尤其今年来，该业态在我国发展快速，各大城市频繁开店，不仅海外资本在华加速扩张，本土传统大型卖场也纷纷转型仓储超市。本文对该现象进行分析，并对会员制仓储超市在我国发展前景进行探讨，期望通过理性分析能够促进业界思考，并推动我国零售业健康发展。
MHD CASSON NANOFLUID FLOW OVER A STRETCHING SURFACE EMBEDDED IN A POROUS MEDIUM: EFFECTS OF THERMAL RADIATION AND SLIP CONDITIONS
Authors: Ahmed Sameh E. , Mohamed R.A , Ali A.M , Chamkha A.J , Soliman M.S
Published: September 2021

This article presents a numerical study for a magnetohydrodynamic flow of a non-Newtonian Casson nanofluid over a stretching sheet embedded in a porous medium under the impacts of non-linear thermal radiation, heat generation/absorption, Joule heating and slips boundary conditions. A two-phase nanofluid model is applied to represent the nanofluid mixture. The porous medium is represented via the Darcy model. A similar solution is obtained for the governing equations and a numerical treatment based on the Runge-Kutta method is conducted to the resulting system of equations.  In this study, the controlling physical parameters are the Casson fluid parameter , the magnetic field , the radiation parameter , the Brownian motion parameter  and the thermophoresis parameter . The obtained results reveal that an increase in the Casson parameter enhances both of the local Nusselt and the Sherwood number while they are reduced as the non-linear radiation parameter increases. In addition, an increase in the magnetic field parameter supports the skin friction coefficient regardless the value of the Casson parameter.
AN UNSTEADY MHD FLOW OF CASSON FLUID PAST AN EXPONENTIALLY ACCELERATED VERTICAL PLATE
Authors: Das Utpal Jyoti
Published: September 2021

An unsteady, magnetohydrodynamic, incompressible, radiative Casson fluid flow past an infinite vertical permeable plate, which is accelerated exponentially, in presence of heat sink parameter and first-order chemical reaction taking account of Soret effect, is considered. Governing equations are solved for the profiles of velocity, temperature and concentration with the help of Laplace transform. The effects of various physical parameters on velocity, temperature and concentration profiles are discussed with the help of graphs.
ENTROPY GENERATION ANALYSIS OF MAGNETIZED MICROPOLAR FLUID STREAMING ABOVE AN EXPONENTIALLY EXTENDING PLANE
Authors: Dey Debasish , Hazarika Madhurya , Borah Rupjyoti
Published: September 2021

Numerical procedure of solving boundary value problems using MATLAB software has been applied to study the irreversibilies caused by magnetized micropolar fluid streaming above an extending surface. The factors responsible for irreversibilities are thermal and concentration distributions, Lorentz force etc. The entropy generation rates are shown pictorially through some figures and irreversibilities are shown in tabular form.
Keywords-- MHD, Micropolar fluid, Heat transfer, Mass transfer, Exponentially stretching/shrinking sheet, Entropy generation.
Pengaruh Tingkat Hunian Kamar dan Pendapatan Spa terhadap Laba Operasional di Nusa Dua Beach Hotel & Spa
Authors: Arnawa I Putu
Published: September 2021

The purpose of this research is to determine the effect of room occupancy and spa revenue on operating profit at Nusa Dua Beach Hotel & Spa. The data analysis technique used was descriptive quantitative, and analyzed with the test of classical regression assumption, analysis multiple linear regression, individual parameter significance test (t test), simultaneous significance test (Test F) and coefficient of determination R2. Report of room occupancy, spa revenue and operating profit at Nusa Dua Beach Hotel & Spa period 2017 to 2019. The results of this research indicate that the room occupancy and spa revenue have a positive and significant effect on operating profit with the regression equation Y = -484,794,904,574 + 28,760,823,190X1 + 3,260X2 and determination coefficient is 70,2%. Room occupancy and spa revenue partially and simultaneously have a significant effect on operating profit at Nusa Dua Beach Hotel & Spa.
Campground Taman Harmoni Bali Bukit Asah, Nomadic Tourism yang sedang Berkembang di Karangasem Bali
Authors: Kalpikawati Ida Ayu , Pinaria Ni Wayan Chintia
Published: September 2021

This article aims to analyze the Taman Harmoni campground located in Bukit Asah, Karangasem, Bali. This research is a qualitative research where data collection is done by observation and interviews. The interview focused on exploring the development of the construction of the campground, advantages, and characteristics of the tourists who stay overnight. The key informants in this study were the owners, employees and some tourists. The results showed that tourists emphasized the importance of cleanliness of campground facilities including the cleanliness of toilets, tents, the environment, food stalls and the number of available trash cans. Wi-fi signal strength is also getting attention because of the age of tourists staying between 19-25 years who are the millennial group where the availability and access of Wi-fi is a major requirement. Services at the campground in the form of employee responsiveness in serving the needs of tourists when staying overnight need to be improve.
Factors Affecting Learners’ Satisfaction and Loyalty to the Vietnamese American Training Center, Can Tho City
Authors: Dat Mai Tan , Nghi Nguyen Quoc
Published: September 2021

The objective of the study is to determine factors affecting the satisfaction and loyalty of learners to the quality of training services at the Vietnamese American Training Center (VATC) in Can Tho City. The research data were collected from 200 learners studying at VATC Can Tho. Applying structural equation modeling (SEM), the study has demonstrated four factors affecting learner satisfaction, including textbooks and materials; managerial and administrative procedures; facilities, and training programs. Besides, the study has pointed out that satisfaction positively affects learners’ loyalty to VATC Can Tho. Some managerial implications to improve learners’ satisfaction and loyalty to VATC Can Tho were suggested such as Develop training programs, Upgrade learning materials, Improve administrative procedures, and Enhance the center's facilities.

Keywords: satisfaction, loyalty, Vietnamese American Training Center.
Maurice Allais, l’impôt sur le capital et la justice sociale
Authors:   CERDI, ERASME, Université Clermont Auvergne, DIEMER Arnaud , LALLEMENT Jérôme ,   CES, Université Paris Descartes, Université Paris 1 Panthéon-Sorbonne
Published: September 2021

En France, la création d’un impôt sur le capital, qui se substituerait aux impôts sur les revenus, a été défendue au xxe siècle par Maurice Allais. Au nom de la justice, Allais veut confisquer de revenus non gagnés : rentes foncières, intérêts purs des capitaux et rentes inflationnistes. Pour que l’économie fonctionne de façon optimale et juste, l’État doit intervenir en faisant disparaître les rentes qui ne correspondent pas à un service rendu. On présente d’abord les principes généraux de la politique fiscale d’Allais (section 1). La 2e section revient sur les travaux des auteurs cités par Allais favorables à l’imposition du capital. Une 3e section précise le contenu et les modalités spécifiques de la réforme fiscale défendue par Allais. La 4e section évalue les propositions d’Allais au regard de l’efficacité et de la justice et souligne la spécificité de sa conception de la justice qui reste implicite. On montre qu’Allais tend finalement à éliminer toute considération de justice sociale. En témoigne le refus de toute progressivité et de toute personnalisation de l’impôt au profit d’un impôt strictement proportionnel, assis exclusivement sur les choses.
Optimization of the parameters of extraction of root cultures
Authors: Асякина Людмила Константиновна , Федорова Анастасия Михайловна , Дышлюк Любовь Сергеевна
Published: September 2021

Настоящая работа затрагивает тему оптимизации процесса экстракции биологически активных веществ из биомассы корневых культур in vitro лекарственных растений Сибирского федерального округа, а именно шлемника байкальского, шлемника обыкновенного и лапчатки белой. Параметры, которые влияли на ход процесса, были выбраны следующие: продолжительность процесса, температура экстракции и гидромодуль. В ходе эксперимента выяснилось, что для максимального выхода экстракта шлемника байкальского необходимо соблюдать следующие параметры: соотношение объема растворителя, наиболее эффективного в данном случае 70 %-ного этанола, к массе исходного сырья 1:10, продолжительность процесса 60 мин, температура 50 °С. Максимальный выход биологически активных веществ из шлемника обыкновенного будет достигаться при температуре экстракции 60 °С в течение 60 мин с использованием 70 %-ного этанола в качестве органического растворителя в соотношении к высушенному образцу 1:10. Оптимальные параметры извлечения активных веществ из лапчатки белой: соотношение экстрагента, в качестве которого выступает диэтиловый эфир, к исходному сырью 1:20, продолжительность 60 мин при температуре экстракции 40 °С. Извлечение экстрактов из культур in vitro позволит сохранить популяцию растений, произрастающих в естественных условиях.

This work touches on the topic of optimization of the process of extraction of biologically active substances from the biomass of root cultures in vitro of medicinal plants of the Siberian Federal District, namely Scutellaria galericulata, Scutellaria Baicalensis, Potentilla alba . The parameters that influenced the course of the process were chosen as follows: process duration, extraction temperature and hydronic module. In the course of the experiment, it turned out that for the maximum yield of the Scutellaria Baicalensis extract, the following parameters must be observed: the ratio of the volume of the solvent, the most effective in this case 70% ethanol, to the weight of the feedstock 1:10, the duration of the process is 60 min, the temperature is 50 °C. The maximum yield of biologically active substances from Scutellaria galericulata will be achieved at an extraction temperature of 60 °C for 60 minutes using 70 % ethanol as an organic solvent in a ratio of 1:10 to the dried sample. The optimal parameters for the extraction of active substances from Potentilla alba are: the ratio of the extractant, which is diethyl ether, to the feedstock 1:20, lasting 60 minutes at an extraction temperature of 40 °C. The extraction of extracts from in vitro cultures will allow preserving the population of plants growing in natural conditions.
ОЦЕНКА ЭФФЕКТИВНОСТИ РОССИЙСКОЙ ЦЕНТРАЛИЗОВАННОЙ И РАСПРЕДЕЛЕННОЙ ГЕНЕРАЦИИ ЭНЕРГИИ
Authors: Zaichenko Viktor Mikhailovich , Solovyov Dmitry Alexandrovich , Shilova Lyubov Andreevna
Published: September 2021

В статье выполнен анализ экономической эффективности использования централизованного и распределенного производства энергии. Показано, что в общем случае производство энергии крупной централизованной системой эффективнее, чем на отдельных установках распределенной энергетики. Если рассматривать абстрактного потребителя, нуждающегося в энергии на длительный промежуток времени, то величина затрат на единицу производимой для этого потребителя энергии в централизованной системе ниже, чем в отдельной установке, т.к. при одинаковом уровне параметров рабочего тела и технологического совершенства крупная установка всегда экономичнее, чем малая. Влияние так называемого «масштабного фактора» наблюдается во всех без исключения современных технологиях производства энергии. Наиболее наглядно это происходит при генерации электроэнергии, где разрыв в экономичности крупных и мелких установок значительно больше, чем при генерации тепла.
ПРИМЕНЕНИЕ ФУНКЦИИ РИСКА ДЛЯ МОДЕЛЬНОГО ОПИСАНИЯ КОЛЕБАНИЯ ЦЕН НА РЫНКЕ НЕДВИЖИМОСТИ
Authors: Noskov Sergey Ivanovich , Honyakov Anton Andreevich
Published: September 2021

В работе приведен краткий обзор методов моделирования цен на рынке недвижимости. Описано применение функции риска для модельного описания колебания цен на рынке жилой первичной недвижимости. В качестве независимых переменных использованы цены на различные строительные материалы: блоки силикатные стеновые, плиты перекрытий железобетонные, товарный бетон, смеси песчано-гравийные. Описана методика организации конкурса моделей для функции риска. В качестве критериев сравнения были использованы средняя относительная ошибка аппроксимации и вектор срабатываний, на основе которых выполнен также анализ полученной модели. Дополнительно к кусочно-линейной модели построена линейная регрессионная модель с тем же набором независимых факторов.
ПОДХОД К ОЦЕНКЕ ИНФОРМАЦИОННОЙ НАГРУЗКИ ТИПОВОГО ПОЖАРНО-СПАСАТЕЛЬНОГО ПОДРАЗДЕЛЕНИЯ ГПС МЧС РОССИИ
Authors: Martinovich Nikolay Viktorovich , Kalach Andrey Vladimirovich , Shmyreva Marianna Borisovna
Published: September 2021

В статье в целях оценки информационной нагрузки типового пожарно-спасательного подразделения предложено представить информационный поток как систему взаимосвязанных и взаимозависимых элементов, которые позволяют обеспечивать достижения целей и задач государственных организаций органов исполнительной власти, осуществляющих оперативное реагирование на происшествия. Высказано мнение о том, что данное графоаналитическое представление информационных потоков позволяет провести общую оценку информационной нагрузки на рассматриваемую организацию с учетом специфики деятельности подразделений МЧС России. Численное выражение процессов и алгоритмов данной структуры открывает возможность использования широкого спектра различных математических методов оптимизации. Предложенное функциональное моделирование деятельности типового пожарно-спасательного подразделения ГПС МЧС России позволяет систематизировать значительный объем бизнес-процессов в данной области, требующий изучения и анализа, а также сократить время на выполнение управленческих функций.
ИЗМЕНЕНИЕ ТОПЛИВНОГО РЕЖИМА КАК СПОСОБ РЕСУРСОСБЕРЕЖЕНИЯ НА ПРЕДПРИЯТИИ НЕФТЕГАЗОВОЙ ОТРАСЛИ
Authors: Michurina Olga Yurievna , Dubinina Natalia Alexandrovna , Sabitov Sergey Sergeevich , Kudryavtseva Olga Vitalievna Kudryavtseva Olga Vitalievna Kudryavtseva Olga Vitalievna , Kushner Anna Alekseevna
Published: September 2021

В целях ресурсосбережения на предприятии нефтегазовой отрасли разработаны мероприятия по снижению постоянных затрат с помощью изменения топливного режима Узловой котельной Южного филиала ООО «Газпром энерго». Произведено нормативное и техническое обоснование процесса. Внедрение в практику хозяйствования обоснованного плана мероприятий позволит снизить эксплуатационные затраты, оптимизировать численность персонала, сократить размер имеющихся материальных запасов, снизить арендную плату, что в целом будет способствовать ресурсосбережению и улучшению конечных показателей деятельности Южного филиала ООО «Газпром энерго», повышению экономической эффективности.
АЛГОРИТМЫ РАБОТЫ СИСТЕМЫ ПОЖАРНОЙ СИГНАЛИЗАЦИИ КАК СЕГМЕНТА «УМНОГО ДОМА»
Authors: Makarov Vadim Vladimirovich , Gusev Sergey Sergeevich
Published: September 2021

В статье рассматривается система и алгоритмы работы системы пожарной сигнализации, как сегмента «умного дома». Также проводится моделирование процессов эвакуации людей из здания при наступлении чрезвычайной ситуации, учитывая плотность потока людей и скорость потока передвижения, рассмотрев различные сценарии организации рабочего пространства и поведения людей. Предлагается перечень рекомендаций для более рационального использования пространства зданий и снижения степени потенциального ущерба в случае возникновения чрезвычайных ситуаций. Обеспечение пожарной безопасности людей требует организации их безопасной эвакуации. К критериям безопасной эвакуации людей в настоящее время относятся своевременность и беспрепятственность, которые проверяются на основе расчетов с помощью тех или иных моделей движения людского потока, реализованных в исполнительных алгоритмах для ЭВМ. Целью работы является создание алгоритма работы пожарной сигнализации.
Cloud computing a zarządzanie procesami biznesowymi (BPM) w przedsiębiorstwach
Authors: Zadworny Waldemar
Published: September 2021

Chmura obliczeniowa (Cloud Computing) stanowi obecnie ważny trend na rynku IT. Usługi Cloud Computing polegają na dostarczeniu i udostępnianiu wydajnych i skalowalnych zasobów IT (oprogramowanie jako usługa, ang. Software as a Service – SaaS, platforma jako usługa, ang. Platform as a Service – PaaS, infrastruktura jako usługa, ang. Infrastructure as a Service – IaaS), a usługodawca, którym jest zwykle podmiot zewnętrzny(ewentualnie wewnętrzny dział IT), oferuje usługi informatyczne odbiorcom za pośrednictwem sieci. Zarządzanie procesami biznesowymi również znajduje implementację oraz praktyczne zastosowanie w przedmiotowym modelu. Dostępność i popularność takiego podejścia wynika z dojrzałości, dostępności i popularności samego modelu chmury obliczeniowej, podejścia procesowego do zarządzania oraz systemów zarządzania procesami biznesowymi. Celem artykułu jest zaprezentowanie zastosowania technologii Cloud Computing w kontekście zarządzania procesami biznesowymi we współczesnych przedsiębiorstwach.
Nursing Care for Kidney Transplant Patients: A Scoping Review
Authors: Teixeira Rocha Cintia Capistrano , da Lima Neto Alcides Viana , Pereira da Silva Ana Beatriz , Silva Farias Victor Alexandre , D’Eça Junior Aurean , Rosendo da Silva Richardson Augusto
Published: September 2021

Objectives: Mapping nursing care in kidney transplant patients.

Materials and method: A scoping review was conducted according to the recommendations of the Joanna Briggs Institute Reviewers’ Manual. Data were collected through 13 national and international databases from December 2020 to January 2021, following scientific rigor in the selection of the material. The pre-selection was made by reading the title, abstract and introductory text in advance; the materials included in this stage were read in full to define the content for the study.

Results: Fifteen studies were included. Of these, 60% are articles; dissertations, manuals, protocols, guidelines and bulletins totaled 40% of the material studied. 86.6% of the material has a quantitative approach. Regarding the methodological design, 73.3% were descriptive/transversal character studies. Regarding the mapping of nursing care, it was possible to divide them into two categories: nursing care after kidney transplantation (immediate, mediated and late) and nursing care after kidney transplantation in primary health/extra-hospital care.

Conclusions: It is concluded that the study allowed mapping nursing care to kidney transplant patients in the immediate, late and primary health care periods.
SDN-based Sociocast group communications in the Internet of Things
Authors: Luigi Atzori  , Claudia Campolo  , Antonio Iera  , Giuseppe Massimiliano Milotta  , Giacomo Morabito  , Salvatore Quattropani
Published: September 2021

The new applications populating the Future Internet will increasingly rely on the exchange of data between groups of devices, dynamically established according to their profile and habits (e.g., a common interest in same software updates and services). This will definitely challenge traditional group communication solutions that lack the necessary flexibility in group management and do not support effective control policies on involved endpoints (i.e., authorized senders and intended receivers). To address the cited issues, the idea of introducing new disruptive network-layer solutions has emerged from recent literature. Among them, Sociocast has been theorized as an enabler of flexible interactions between groups of devices tied by social relationships. In this paper we start from the concept of Sociocast and propose a solution based on Software Defined Networking (SDN) for its implementation at the network layer in Internet of Things. The performance of Sociocast is studied and compared to methods running at the application layer that provide similar features. Experimental results, achieved through an emulation-based playground, confirm that the Sociocast approach allows for a significant reduction of signaling and data packets circulating in the network with respect to traditional approaches.
The Impact of Foreign Aid Conditionality on Poverty Alleviation in Bangladesh: A Recipient’s Perspective
Authors: Mamun Mehadi
Published: September 2021

Donors provide aid to the recipient government with conditions to implement some policies so that the recipient government can use aid effectively and able to improve its economic, social, and political situation as well as reduce its poverty. However, concerns have been raised that aid conditionality has promoted reforms that could not reduce the poverty situation in some countries such as sub-Saharan Africa, while some countries in East Asia were able to break out of poverty and find themselves better off than before the conditional aid was accepted. Hence, the purpose of this study is to examine the impact of foreign aid conditionality on poverty alleviation in Bangladesh. The paper is qualitative in nature and a case study on Bangladesh. The study has been conducted by using secondary data, like journal articles, research papers, and Bangladesh government and aid donors’ reports. The study finds that Bangladesh has started to show considerable improvement in reducing poverty, though it is still ranking low on the Human Development Index. The findings have important implications for policymakers and captured insights about the foreign aid conditionality in Bangladesh.
Aging City and House Prices: Impact of Aging Condominium Stock on the Housing Market in the Tokyo- Metropolitan Area
Authors: Nakagawa Masayuki , Shimizu Chihiro
Published: September 2021

Based on an analysis of the housing market in the Tokyo metropolitan area, this study focuses on the external diseconomies of aging condominiums. It is possible that the quality of the condominium stock deteriorates more rapidly than that of ordinary housing. This deterioration in quality leads to a reduction in the quality of housing services received by residents. Furthermore, this worsening of the residential environment may lead to external diseconomies. We run hedonic models to identify the external diseconomies of aging condominiums in the residential market of the Tokyo metropolitan area. The results of our estimated models indicate that such external diseconomies occur for detached housing in areas where detached houses and condominiums coexist. These external diseconomies exert downward pressure on prices. Specifically, detached housing prices are lowered by around 3.2% for each 1% increase in the proportion of total building floor area in neighborhoods where condominiums were built before 1990. In other words, aging condominiums begin to generate diseconomies in their vicinities approximately 20 years after they were built.
International Real Estate Review
Authors:   University of Cambridge, Chen Ming-Chi Chen , Patel Kanak ,   University of Cambridge
Published: September 2021

The primary purpose of this paper is to examine dynamic causal relationships between house price and its five determinants, including total household income, short-run interest rates, stock price index, construction costs, and housing completions, in Taipei new dwelling market. Granger causality tests, variance decomposition, impulse response functions based on the vector error-correction model are utilised. All five determinants Granger cause house prices, but only house prices and stock price index have a bilateral feedback effect. The variance decomposition results suggest that disturbances originating from current house prices inflict greatest variability (66 percent of variance) to future prices. The remaining 34 percent of the variance is explained by the five determinants. On the supply side, the construction costs and housing completions together explain about 10 percent of the house price variance. On the demand side, short-run interest rates, total household income and stock price index explain about 24 percent of the variance.
International Real Estate Review
Authors:   Tsinghua University, Liu Hongyu
Published: September 2021

The housing system in urban China is now undergoing a process of transition. Housing policy is one of the most popular topics under public discussion. This paper gives a brief review of the recently implemented housing policies and provides some basic information about the current situation of the housing market and housing system reform in urban China. It appears that China is very successful in improving the housing conditions of urban residents. However, there are still a number of problems related to housing disposition and consumption. Based on accepted criteria, this paper makes an assessment of the performance of current housing policy, resulting in several suggestions.